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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 18600. Отображено 100.
26-01-2012 дата публикации

Communication device and communication method, computer program, and communication system

Номер: US20120020420A1
Автор: Hiroaki Takano, Kazuyuki Sakoda, Ryo Sawai, Ryota Kimura, Takushi Kunihiro, Yuichi Morioka
Принадлежит: Sony Corp

Suitable beam pattern control is performed while performing access control based on physical carrier sense. A communication device transmits frames having a long preamble under a state where signals will not reach unless a beam pattern is formed, thereby enabling access control based on physical carrier sense, and under a state where signals will sufficiently reach without a beam pattern being formed transmits frames having a shorter preamble, thereby suppressing transmission overhead. Also, a beam pattern and preamble type are decided based on transmission/reception history of access control following CSMA/CA procedures.

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Номер записи: 1
01-03-2012 дата публикации

Rf bus access protocol and transceiver and methods for use therewith

Номер: US20120051355A1
Автор: Ahmadreza (Reza) Rofougaran
Принадлежит: Broadcom Corp

A method includes determining whether information is to be transmitted via a radio frequency (RF) bus that supports direct intra-device communication between at least three circuits in a millimeter wave frequency band. When the information is to be transmitted via the RF bus, the method determines whether the RF bus is available. When the RF bus is available, the information is converted into RF bus signal, access to the RF bus is secured, and after access to the RF bus is secured, the RF bus signal is transmitted via the RF bus.

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Номер записи: 2
06-09-2012 дата публикации

Method and apparatus for addressing in a resource-constrained network

Номер: US20120226822A1
Автор: John Peter Norair
Принадлежит: Blackbird Technology Holdings Inc

An electronic device may receive a protocol data unit (PDU) comprising a plurality of addressing bits. Data-link-layer processing of the PDU may be based on each of the addressing bits. Network layer processing of the PDU may be based on a first subset of the plurality of addressing bits. Transport-layer processing of the PDU may be based on a second subset of plurality of addressing bits. The data-link-layer processing may comprise determining whether the PDU is unicast-addressed or non-unicast-addressed. For a unicast-addressed PDU, the data-link-layer processing may comprise determining whether the PDU is destined for the electronic device based on a comparison of a Target ID field of the PDU and a device ID of the electronic device. For a non-unicast-addressed PDU, the Target ID field may not be present, and whether the PDU is destined for the electronic device may be determined based on other criteria.

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Номер записи: 3
06-09-2012 дата публикации

Method and apparatus for forward error correction (fec) in a resource-constrained network

Номер: US20120226955A1
Автор: John Peter Norair
Принадлежит: Blackbird Technology Holdings Inc

An electronic device may utilize or support adaptive use of forward error correction (FEC) in a resource-constrained network. The adaptive FEC use may comprise determining whether use of FEC encoding in transmissions from another electronic device to the electronic device is necessary, desirable, and/or feasible, and when use of FEC encoding is deemed feasible and either necessary or desirable, instructing the another electronic device to utilize FEC encoding when transmitting signals destined for the electronic device. Use of FEC encoding may be determined to be feasible, necessary and/or desirable based on power loss associated with the communications from the another electronic device; based on determination of latency associated with the communications from the another electronic device; and/or based on power and/or processing related resources in the electronic device. The electronic device may separately and selectively apply FEC encoding to transmissions to the another electronic device.

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Номер записи: 4
03-01-2013 дата публикации

Listen before talk frequency agile radio synchronization

Номер: US20130003803A1
Автор: Helaman David Pratt Ferguson
Принадлежит: Digi International Inc

A radio frequency communication system includes a transmitter that selects a frequency channel from among multiple frequency channels available to the transmitter and to a receiver, listens to ensure that a selected channel is unused before transmitting, and sends a preamble longer in time than a receiver scan time during which the receiver is operable to scan all frequency channels available to transmitter and receiver for the preamble. The receiver scans through the available frequency channels for a preamble, finds the preamble on a channel, and locks on to the channel on which the preamble was found.

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Номер записи: 5
10-01-2013 дата публикации

Synchronous transmission methods and apparatus

Номер: US20130010774A1
Автор: Junyi Li, Shihuan Liu, Sundar Subramanian, Thomas J. Richardson, Xinzhou Wu
Принадлежит: Qualcomm Inc

Methods and apparatus for use in a wireless system are described where initiation of packet transmission is constrained in accordance to control actual packet transmission in a manner that reduces contention and possible collisions beyond that provided by lower layer resource contention mechanisms, e.g., 802.11 carrier sensing and/or transmission back-off timing mechanisms. Through higher level, e.g., MAC constraints, on packet transmission initiation, an air interface which employs carrier sensing can be used and controlled in a manner which reduces collisions and interference in applications where small packets, e.g., packets which can be transmitted in a fraction of the maximum permitted transmission time. The methods allow small packets in such systems to be transmitted on a periodic or semi-periodic basis in many cases.

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Номер записи: 6
24-01-2013 дата публикации

Low power radio device and radio resource sharing method for low power radio device

Номер: US20130021967A1
Автор: Chi Sung Bae, Hyo Sun HWANG, Nak Myeong Kim, Young Jun Hong
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A low power radio device and a radio resource sharing method for the low power radio device are provided. In the low power radio device, a channel state (CS) is detected by carrier sensing before transmission of each frame to reduce interference and a need of retransmission of each frame, accordingly, reducing energy consumption.

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Номер записи: 7
23-05-2013 дата публикации

METHOD AND SYSTEM FOR CONTENTION-BASED MEDIUM ACCESS SCHEMES FOR DIRECTIONAL WIRELESS TRANSMISSION WITH ASYMMETRIC ANTENNA SYSTEM (AAS) IN WIRELESS COMMUNICATION SYSTEMS

Номер: US20130128839A1
Автор: Ngo Chiu, Shao Huai-Rong
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A method and system for wireless communication in an asymmetric antenna system (AAS) communication system is provided. A wireless station performs carrier sensing by sensing a wireless communication channel for ongoing communications in one or more directions. Upon detecting that the wireless communication channel is idle, the station transmits a frame preamble on the channel to a receiving wireless station in more than one transmit direction, and transmits a frame payload on the channel to the receiving wireless station in one transmit direction. 1. A method of wireless communication , comprising:carrier sensing, by a wireless station sensing a wireless communication channel for ongoing communications in one or more directions, wherein carrier sensing comprises sensing the wireless communication channel in a number of receive directions such that receive directions cover at least transmit directions;upon detecting that the wireless communication channel is idle:transmitting a frame preamble on the channel to a receiving wireless station in more than one transmit direction; andtransmitting a frame payload on the channel to the receiving wireless station in one transmit direction.2. The method of further comprising:upon detecting the channel is idle:transmitting a request to send (RTS) frame on the channel to the receiving wireless station in a number of transmit directions which cover the expected receive direction in addition to an expected transmit direction.3. The method of further comprising: upon receiving a clear to send (CTS) frame from the receiving wireless station in response to the RTS frame claim 2 , transmitting the frame preamble to the receiving wireless station in the number of transmit directions which cover the expected receive direction in addition to the expected transmit direction; andtransmitting the frame payload to the receiving wireless station in the expected transmit direction only.4. The method of further comprising maintaining a Short ...

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Номер записи: 8
27-06-2013 дата публикации

Contention based channel occupying method in wireless network using a plurality of channels

Номер: US20130163575A1
Автор: Byung Jang Jeong, Gwang Zeen KO, Jin Suk PAK, Jung Sun Um, Sang Won Kim, Sung Jin Yoo
Принадлежит: Electronics and Telecommunications Research Institute ETRI

Disclosed is a contention based channel occupying method in a wireless network using a plurality of channels, including: acquiring, by terminals that are incapable of transmitting a data frame through primary contention, occupation channel information from a terminal that transmits the data frame through the primary contention; verifying, by the terminals, an occupiable channel based on the occupation channel information; and performing, by the terminals, secondary contention in the occupiable channel.

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Номер записи: 9
11-07-2013 дата публикации

Device, system and method of communicating during a contention based access period

Номер: US20130176993A1
Автор: Carlos Cordeiro, Solomon B. Trainin
Принадлежит: Intel Corp

Some demonstrative embodiments include devices, systems and/or methods of communicating during a Contention-Based-Access-Period (CBAP). For example, a device may include a wireless communication station to transmit a wireless communication transmission over a wireless communication medium upon determining that the wireless communication medium is idle for a predefined time period within a contention-based-access period (CBAP), if a scheduling element allocating the CBAP includes an indication of an identity of the wireless communication station in a predefined field.

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Номер записи: 10
01-08-2013 дата публикации

METHOD AND APPARATUS FOR IMPROVING COEXISTENCE OF SYNCHRONOUS AND ASYNCHRONOUS NODES IN A SYNCHRONOUS MAC SYSTEM

Номер: US20130195082A1
Автор: Liu Shihuan, Subramanian Sundar, Wu Xinzhou
Принадлежит: QUALCOMM INCORPORATED

A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be configured to determine a plurality of slots for transmitting information including a plurality of first type slots and a plurality of second type slots where the second type slots have a longer duration that the first type slots. The apparatus may be configured to transmit information in a first type slot when a previous reception was successful and there is no other transmission expected to occur during a gap preceding the first type slot and during the first type slot. Additionally or in the alternative, apparatus may be configured to transmit information in a second type slot when at least one of the previous reception was unsuccessful or there is another transmission expected to occur during a gap preceding the first type slot or during the first type slot. 1. A method of wireless communication , comprising:determining a plurality of slots for transmitting information, the plurality of slots comprising a plurality of first type slots and a plurality of second type slots, the second type slots having a longer duration that the first type slots;transmitting information in a first type slot of the plurality of first type slots when a previous reception was successful and there is no other transmission expected to occur during a gap preceding the first type slot and during the first type slot; ortransmitting information in a second type slot of the plurality of second type slots when at least one of the previous reception was unsuccessful or there is another transmission expected to occur during a gap preceding the first type slot or during the first type slot.2. The method of claim 1 , wherein the gap is a distributed coordination function (DCF) interframe space (DIFS).3. The method of claim 1 , wherein synchronous resources within the plurality of slots are overlaid with resources for use by asynchronous medium access control (MAC) enabled nodes to ...

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Номер записи: 11
03-10-2013 дата публикации

Devices, Systems, and/or Methods for Managing Wireless Networks

Номер: US20130259018A1
Автор: Ji Lusheng, Miller Robert, Worstell Harry
Принадлежит:

A method includes receiving a beacon message at a wireless network device. The beacon message is followed by a beacon time interval. The method further includes receiving a thin beacon message during the beacon time interval. The thin beacon message is followed by a thin beacon time interval that is shorter than the beacon time interval. The thin beacon time interval includes a contention-free period, a contention period, or a combination thereof. 1. A method comprising:receiving a beacon message at a wireless network device, wherein the beacon message is followed by a beacon time interval; andreceiving a thin beacon message during the beacon time interval, the thin beacon message followed by a thin beacon time interval that is shorter than the beacon time interval, wherein the thin beacon time interval comprises a first contention-free period, a first contention period, or a combination thereof.2. The method of claim 1 , wherein the beacon time interval comprises a second contention period.3. The method of claim 2 , wherein claim 2 , when the thin beacon time interval includes the first contention period claim 2 , the first contention period has a shorter duration than the second contention period.4. The method of claim 2 , wherein the thin beacon message is received during the second contention period.5. The method of claim 1 , wherein the beacon time interval comprises a second contention-free period claim 1 , and wherein claim 1 , when the thin beacon time interval includes the first contention-free period claim 1 , the first contention-free period has a shorter duration than the second contention-free period.6. The method of claim 1 , wherein a first size of the thin beacon message is smaller than a second size of the beacon message.7. The method of claim 1 , wherein the beacon message comprises a first plurality of fields claim 1 , wherein the thin beacon message comprises a second plurality of fields claim 1 , and wherein the second plurality of fields is a ...

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Номер записи: 12
17-10-2013 дата публикации

Supported, self-optimizing wireless networks, optimized with respect to energy, mobility, and capacity

Номер: US20130272132A1
Автор: DEBDEEP CHATTERJEE, Huaning Niu, Hujun Yin, JONG-KAE FWU, Youn Hyoung Heo, Yuan Zhu, Yujian Zhang
Принадлежит: Intel Corp

Technology is discussed for self-optimization approaches within wireless networks to optimize networks for energy efficiency, load capacity, and/or mobility, together with new, supporting channel state measurements and handover techniques. New, Channel State Information-Reference Signals (CSI-RSs) for yet-to-be-configured Cell-IDentifications (Cell-IDs) can be used to determine whether adjacent transmission cells can provide coverage for transmission cells that can be switched off for energy efficiency during formation of a Single Frequency Network (SFN). New approaches are also discussed to facilitate mobility within such a network. The new CSI-RSs and mobility approaches can also be used to split up such a SFN when changing load demands so require. Additionally, such new approaches can be used to create a SFN with a common Cell-ID where high mobility is required, such as near a roadway, and to break it up where high capacity is required, such as during a period of traffic congestion.

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Номер записи: 13
17-10-2013 дата публикации

MULTI-ACCESS SCHEME AND SIGNAL STRUCTURE FOR D2D COMMUNICATIONS

Номер: US20130272262A1
Автор: Chen Xiaogang, Davydov Alexei, Fwu Jong-Kae, Hsuan Yi, Li Honggang, Li Qinghua, Lin Xintian E., Niu Huaning, Wong Wendy C., Yin Hujun, Zhang Yujian, Zhu Yuan
Принадлежит:

A signal structure for use in D2D communications is described. In one embodiment, a preamble for automatic gain control at the receiver end is included in the transmitted signal. Techniques for scheduling of D2D transmissions using carrier sensing multiple access (CSMA) and a power control schemes for interference management are also described. 1. A user equipment (UE) device , comprising:a radio transceiver to provide an air interface for communicating with an eNB (evolved node B) and for D2D (device-to-device) communications; andprocessing circuitry connected to the radio transceiver to:receive allocations of time-frequency resources for D2 D communications from the eNB;establish a D2D communications session with a second UE, wherein D2D transmissions to and from the second UE are organized into D2D slots with each D2D slot beginning with a preamble and containing a plurality of OFDM or SC-FDM symbols; and,perform automatic gain control (AGC) using the preambles of received D2D slots.2. The device of wherein the preamble is a repeating signal sequence in the time domain.3. The device of wherein the processing circuitry is further to detect the preamble of received D2D slots via autocorrelation.4. The device of wherein each D2D slot includes one or more reference symbols.5. The device of wherein the processing circuitry is further to initiate a communications session with the second UE using carrier sense multiple access (CSMA) with respect to a D2D slot by:sensing a current D2D slot to determine if transmission activity is present; and,if the current D2D slot is not busy, sending a D2D transmission to the second UE at the start of a subsequent D2D slot.6. The device of wherein the processing circuitry is further to initiate a communications session with the second UE by:if the current D2D slot is not busy, starting a countdown with a selected number;decrementing the countdown after each non-busy D2D slot is detected and suspending the countdown when a busy D2D ...

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Номер записи: 14
17-10-2013 дата публикации

Apparatus and method to enable device-to-device (d2d) discovery in cellular networks

Номер: US20130273923A1
Автор: Amitav Mukherjee, Honggang Li, Hujun Yin, JONG-KAE FWU, Qinghua Li, Xiaogang Chen, Yuan Zhu
Принадлежит: Intel Corp

An apparatus and method of allowing user equipment (UE) to transmit information directly with other user equipment, using a device-to-device (D2D) mode is disclosed herein. A D2D UE (dUE 1 ) that wishes so communicate to another UE (dUE 2 ) in D2D mode makes various communications requests to an Evolved Node B (eNB), which can facilitate the connection between dUE 1 and dUE 2 by having the dUE 1 measure the signals from dUE 2 to help establish a D2D connection between the dUE 1 and the dUE 2.

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Номер записи: 15
24-10-2013 дата публикации

System and method of communication using distributed channel access parameters

Номер: US20130279427A1
Автор: Alfred ASTERJADHI, Maarten Menzo Wentink, Santosh Paul Abraham, Simone Merlin, Zhi Quan
Принадлежит: Qualcomm Inc

A method includes in response to receiving a modified enhanced distributed channel access (EDCA) parameter set IE at a station, determining a value of an EDCA parameter based on a delta value in the modified EDCA parameter set IE and based on a base value of the EDCA parameter.

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Номер записи: 16
05-12-2013 дата публикации

TERMINAL APPARATUS TRANSMITTING SIGNAL CONTAINING PREDETERMINED INFORMATION

Номер: US20130322368A1
Автор: DOI Yoshiharu, Nagai Makoto, NAKAOKA Ken
Принадлежит:

An RF unit and a modem unit receive a packet signal, containing information regarding a frame construction, which is transmitted from a base station apparatus in a first period of a frame at least including first periods and second periods. An extraction unit identifies the second period in the frame, based on the received packet signal. A setting unit sets a waiting time period in the identified second period. A carrier sensing unit carries out carrier sensing over the waiting time period set by the setting unit. The modem unit and the RF unit broadcast the packet signal based on a result of the carrier sensing. 2. A terminal apparatus according to claim 1 , wherein a maximum value of the waiting time period settable by the setting unit is larger than a maximum value of the waiting time period claim 1 , for the carrier sensing claim 1 , settable by the other terminal apparatus of the different type.3. A terminal apparatus according to claim 1 , wherein the range of the waiting time period settable by the setting unit differs from the range of the waiting time period claim 1 , for the carrier sensing claim 1 , settable by the other terminal apparatus of the different type.4. A terminal apparatus according to claim 1 , wherein the range of the waiting time period settable by the setting unit is indicated by fixed values claim 1 , and the range of the waiting time period claim 1 , for the carrier sensing claim 1 , settable by the other terminal apparatus of the different type is indicated by variant values. 1. Field of the InventionThe present invention relates to a communication technology, and it particularly relates to a terminal apparatus for transmitting signal containing predetermined information.2. Description of the Related ArtRoad-to-vehicle communication has been under investigation in an effort to prevent collision accidents of vehicles on a sudden encounter at an intersection. In a road-to-vehicle communication, information on conditions at an intersection ...

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Номер записи: 17
05-12-2013 дата публикации

Authorized shared access carrier aggregation with sensing

Номер: US20130322371A1
Автор: Durga Prasad Malladi, Peter Gaal, Rajat Prakash
Принадлежит: Qualcomm Inc

A method for managing spectrum resources by a network node in a wireless communication system may include determining an availability of a first channel of a spectrum, and assigning a second channel to a secondary carrier in response to determining that the first channel is available. In the alternative, or in addition, the method may include unassigning the second channel to the secondary carrier in response to determining that the first channel is unavailable. The spectrum may be, or include, Authorized Shared Access (ASA) spectrum. The method may be performed by one or more nodes of a network that is a secondary user of the spectrum. The channel may be deemed unavailable when in use by a primary user of the ASA spectrum. A wireless communication apparatus include a processor coupled to a memory holding instructions for execution by the processor to cause the apparatus to perform operations as described above.

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Номер записи: 18
23-01-2014 дата публикации

Method of channel assessment and channel searching in a wireless network

Номер: US20140023023A1
Автор: Beom Jin Jeon, Hyeon Cheol Cho, Taek Soo Kim
Принадлежит: LG ELECTRONICS INC

A method of channel assessment and channel searching in a wireless network is disclosed. The wireless network separately performs a channel assessment procedure and a channel searching procedure for channel change or another object. The channel assessment procedure is to measure a status or quality of a channel which is currently used in the wireless network. A coordinator of the wireless network designates a time interval for the channel assessment to notify other device of it. The channel assessment procedure may be performed periodically, and is preferably scheduled to allow other devices not to use the channel for the time interval which at least one device performs channel assessment.

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Номер записи: 19
06-02-2014 дата публикации

SIGNAL TRANSMISSION METHOD AND DEVICE IN A WIRELESS COMMUNICATION SYSTEM

Номер: US20140036853A1
Автор: Kim Hakseong, Seo Hanbyul
Принадлежит: LG ELECTRONICS INC.

One embodiment of the present invention relates to a method for transmitting signals over an unlicensed band phase of a base station in a wireless communication system, which comprises the steps of: transmitting a physical down-link control channel (PDCCH) from a licensed band; and transmitting a physical down-link shared channel (PDSCH) over a time interval of the unlicensed band corresponding to the sub-frame transmitted by the PDCCH, wherein a reservation signal can be transmitted to a pre-set point from the point the unlicensed band is available to the base station, if the base station performs wave transmission sensing for the unlicensed band for transmission of the PDSCH, and the pre-set point is earlier than the point at which the unlicensed becomes available from the transmission sensing results. 1. A method of transmitting a signal on an unlicensed band , which is transmitted by an eNode B in a wireless communication system , comprising the steps of:transmitting a physical downlink control channel (PDCCH) on a licensed band; andtransmitting a physical downlink shared channel (PDSCH) on a time period of the unlicensed band corresponding to a subframe to which the PDCCH is transmitted;wherein the eNode B is configured to perform a carrier sensing for the unlicensed band to transmit the PDSCH and wherein if a timing point of which the unlicensed band is available is ahead of a pre-set timing point as a result of performing the carrier sensing, the eNode B is configured to transmit a reservation signal from the timing point of which the unlicensed band is available to the pre-set timing point.2. The method of claim 1 , wherein if a scheduling of the PDSCH is performed after the carrier sensing claim 1 , the pre-set timing point corresponds to a transmission start point of the subframe to which the PDCCH is transmitted.3. The method of claim 1 , wherein if the carrier sensing is performed after a scheduling of the PDSCH claim 1 , the pre-set timing point ...

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Номер записи: 20
06-02-2014 дата публикации

PROCESS AND DEVICE FOR DETECTION OF A FREQUENCY SUB-BAND IN A FREQUENCY BAND AND COMMUNICATIONS EQUIPMENT COMPRISING SUCH A DEVICE

Номер: US20140038652A1
Автор: BERG Vincent, GAUTIER Matthieu
Принадлежит: Commissariat a I'Energie Atomique et aux Energies Alternatives

The invention relates to a process for detection of a signal in a frequency sub-band of a frequency band of an acquired signal y(t), the process comprising: 1. A process for detection of a signal in a frequency sub-band of a frequency band of an acquired signal y(t) , the process comprising:acquisition (E1) of the signal y(t) in a frequency band;{'sub': 'FFT', 'frequential analysis (E2) of said acquired signal y(t) to obtain at least one frequential signal Y with Nfrequential components;'}breakdown (E3) into M frequency sub-bands i of size N of the frequential signal Y, the size of each frequency sub-band being a function of the bandwidth of the signal to be detected;{'sub': 'i', 'determination (E4), in the frequential domain, for each frequency sub-band, of a criterion T,i=1, . . . , M as a function of the energy of the signal in the frequency sub-band i and of the coefficient two of the autocorrelation function of the signal in the frequency sub-band i;'}{'sub': 'i', 'decision (E5), as a function of the criterion T, to determine whether a signal is detected in the sub-band i.'}2. The process as claimed in the preceding claim , in which frequential analysis (E2) consists of:{'sub': t', 'FFT, 'breaking down (E10) the acquired signal in the time field into N>1 blocks of Nsamples;'}{'sub': t', 'FFT, 'serial to parallel conversions (E11) of each of the Nblocks to obtain Nparallel samples;'}{'sub': t', 't', 'FFT', 't, 'determining (E12), for each of the Nblocks, the Fourier transform of each of the Nblocks to obtain the frequential signal Y at Nfrequential components for each of the Nblocks.'}3. The process as claimed in the preceding claim , in which the Nfrequential components of each of the Nblocks are broken down (E3) into M frequency sub-bands i of size N (N Подробнее

Номер записи: 21
20-03-2014 дата публикации

METHOD FOR MANAGING SELECTIVE ACCESS TO A WIRELESS NETWORK IN A MOBILE TERMINAL AND AN APPARATUS FOR SAME

Номер: US20140079014A1
Автор: LEE Seung Jun
Принадлежит:

The present invention relates to a method and apparatus for managing access to a wireless data network in a wireless communication terminal. In a wireless communication terminal embodying the invention, wireless signal from at least one of access points of a wireless data network is firstly detected and the strength of the signal is saved. Then, signal strength is secondly detected from the at least one of access points and differences between the firstly-detected signal strengths and the secondly-detected ones are calculated for each of the at least one of access points. Based on whether or not the differences fall within a predetermined range, it is determined whether a wireless communication terminal is in motion or not. If the terminal is in motion, accessing to a wireless data network is prohibited or a sign indicating that access to a wireless data network is impossible is displayed even though access points accessible are found. If the terminal is determined to be in abeyance, access to a wireless data network is attempted or a sign indicating that access is possible is displayed. 1. A method of managing access to a wireless network in a wireless terminal , comprising:detecting wireless signals from one or more access points of the wireless network N−1 (N>=2) times at different points of time under a disconnected state in which an IP address is not assigned from the wireless network, and for each of the access points, storing strengths of the detected wireless signals in a detected order thereof;detecting wireless signals from one or more access points of the wireless network once more (N-th detection), and determining which state the wireless terminal is in among predetermined states including at least a first state and a second state, based on numerical values derived from differences between a strength of each of all or part of the N-th detected wireless signals and one of the stored strengths, said one of the stored strengths and the strength of said each ...

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Номер записи: 22
10-04-2014 дата публикации

Apparatus and method for self-scheduling in a wireless communication system

Номер: US20140098776A1
Автор: Se-Youn Lim, Tae-Jin Lee
Принадлежит: SAMSUNG ELECTRONICS CO LTD, Sungkyunkwan University Research and Business Foundation

The present disclosure provides channel sensing in an efficient manner in a cognitive radio MAC protocol and improves channel utilization. Proposed is an Adaptive Channel Sensing (ACS) for variably sensing a channel in accordance with a Fixed Channel Sensing (FCS) and a channel state so as to perform the channel sensing in an efficient manner while reducing the power consumption of a terminal Further proposed is a self-scheduling mechanism which enables multiple terminals to simultaneously transceive data by means of a slot-based contention on the basis of the results of the FCS and ACS, which are proposed by the present disclosure.

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Номер записи: 23
01-01-2015 дата публикации

METHOD AND APPARATUS FOR TRANSCEIVING SIGNALS IN WIRELESS COMMUNICATION SYSTEMS

Номер: US20150003369A1
Автор: Han Seunghee, Kim Suhwook, Kwak Jinsam, Lee Wookbong
Принадлежит: LG ELECTRONICS INC.

One embodiment of the present invention relates to a method for transmitting a signal by a terminal in a wireless communication system which comprises a step wherein, during a predetermined time period in one portion of the frequency bandwidths from among the frequency bandwidths of channels used by said terminal, a carrier wave sensing signal of another terminal is transmitted in which information on the frequency bandwidths of the channel is included. 1. As a method of a user equipment for transmitting a signal in a wireless communication system , the method for transmitting a signal comprises:a step of transmitting a signal for carrier sensing other user equipments during a predetermined period of time in some frequency bands among multiple frequency bands of a channel used by the user equipment,wherein the signal for carrier sensing includes information on a frequency bandwidth of the corresponding channel.2. The method of claim 1 , wherein the signal for carrier sensing is transmitted before the user equipment transmits a signal from a frequency bandwidth of the corresponding channel.3. The method of claim 1 , wherein said some frequency bands correspond to a frequency band wherein multiple channels each having a different bandwidth overlap one another.4. The method of claim 1 , wherein signal transmission is not carried out during a predetermined period of time in remaining frequency bands excluding said some frequency bands.5. The method of claim 1 , wherein the signal for carrier sensing comprises an N-STF (Narrowband Short Training Field) claim 1 , an N-LTF (Narrowband Long Training Field) claim 1 , and an N-SIG (Narrowband Signal).6. The method of claim 1 , wherein information indicating a position in which a frequency bandwidth of the corresponding channel is located within the overall frequency bands of the wireless communication system is included in a beacon frame.7. As a method of a user equipment for receiving a signal in a wireless communication ...

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Номер записи: 24
01-01-2015 дата публикации

EFFICIENT RENDEZVOUS FOR DISTRIBUTED MESSAGES IN FREQUENCY-HOPPING COMMUNICATION NETWORKS

Номер: US20150003428A1
Автор: Hong Wei, Hui Jonathan W., Woo Lik Chuen Alec
Принадлежит:

In one embodiment, a rendezvous request message is generated (e.g., by a sender) that specifies a channel C and a rendezvous time T for which a distributed message is to be transmitted in a frequency-hopping computer network. The rendezvous request message is then transmitted on one or more channels used in the computer network based on reaching a plurality of intended recipients of the distributed message with the rendezvous request message prior to rendezvous time T. Accordingly, the distributed message is then transmitted on channel C at rendezvous time T. In another embodiment, a device receives a rendezvous request message, and in response to determining to honor the rendezvous request message, listens for the distributed message on channel C at rendezvous time T. 1. A method , comprising:generating a rendezvous request message, the rendezvous request message specifying a channel C and a rendezvous time T for which a distributed message is to be transmitted in a frequency-hopping computer network to be transmitted on channel C at time T;transmitting the rendezvous request message on one or more channels used in the computer network, the one or more channels based on reaching a plurality of intended recipients of the distributed message with the rendezvous request message prior to rendezvous time T; andtransmitting the distributed message on channel C at rendezvous time T.2. The method as in claim 1 , wherein the rendezvous time T is selected from a specified time and a delay until transmitting the distributed message.3. The method as in claim 1 , wherein transmitting the rendezvous request message on the one or more channels comprises transmitting the rendezvous request message once on each channel used in the computer network.4. The method as in claim 3 , wherein transmitting the rendezvous request message once on each channel used in the computer network comprises selecting an order of the channels based on a pseudo-random permutation.5. The method as in ...

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Номер записи: 25
06-01-2022 дата публикации

Method and apparatus for indicating slot format of an unlicensed cell in a wireless communication system

Номер: US20220007361A1
Автор: Chun-Wei Huang, Jia-Hong Liou
Принадлежит: ASUSTeK Computer Inc

A method and apparatus are disclosed from the perspective of a User Equipment (UE). In one embodiment, the method includes the UE performing transmission and/or reception in a serving cell, wherein the serving cell is in unlicensed spectrum. The method further includes the UE being configured to receive slot format indication (SFI) on periodic SFI monitoring occasion(s), wherein periodic SFI monitoring occasion(s) is (pre-)configured by a network. The method also includes the UE, in response to receiving and/or detecting a channel indicator, monitoring and/or detecting a first SFI-related signal on a first occasion, wherein the first occasion is not one of (pre-)configured periodic SFI monitoring occasion(s).

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Номер записи: 26
13-01-2022 дата публикации

Method and apparatus for handling bearers based on congestion level in a wireless communication system

Номер: US20220014960A1
Автор: Sunyoung Lee, Youngdae Lee
Принадлежит: LG ELECTRONICS INC

A method and apparatus for handling bearers based on congestion level in a wireless communication system is provided. A wireless device configures at least two lower entities associated with an upper entity for multiple frequencies. A wireless device selects at least one lower entity among the at least two lower entities based on a congestion level of at least one frequency among the multiple frequencies. A wireless device submits a data unit to the at least one lower entity based on the selection. A wireless device performs transmission of the data unit.

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Номер записи: 27
13-01-2022 дата публикации

WIRELESS ACCESS ESTABLISHMENT

Номер: US20220015028A1
Автор: ALANEN Olli, Kasslin Mika, KOLMONEN Veli-Matti, MARIN Janne
Принадлежит:

According to an example aspect of the present invention, there is provided a method, comprising: transmitting an association request from a wireless device to a first access node of a wireless network for associating the wireless device to the wireless network, wherein the wireless network comprises a centralized unit and a plurality of access nodes, including the first access node, receiving an association response from the first access node for associating the wireless device to the wireless network, performing carrier sensing on a plurality of channels; selecting a second access node among the plurality of access nodes in response to obtaining a transmission opportunity for a channel of the plurality of channels, wherein the selecting is based at least partly on a record of ongoing transmission opportunities, and transmitting data from the wireless device to the second access node during the transmission opportunity. 138.-. (canceled)39. An apparatus comprising at least one processor , at least one memory including computer program code , the at least one memory and the computer program code being configured to , with the at least one processor , cause the apparatus at least to:transmit an association request from a wireless device to a first access node of a wireless network for associating the wireless device to the wireless network, wherein the wireless network comprises a centralized unit and a plurality of access nodes, including the first access node,receive an association response from the first access node for associating the wireless device to the wireless network, a. contending for channel access on the plurality of channels, and', 'b. maintaining a record of ongoing transmission opportunities on the plurality of channels, wherein the record comprises information on which access nodes of the wireless network are owners or receivers of the ongoing transmission opportunities,, 'perform carrier sensing on a plurality of channels; wherein the carrier ...

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Номер записи: 28
13-01-2022 дата публикации

METHOD, TERMINAL EQUIPMENT AND NETWORK EQUIPMENT FOR REPEATEDLY TRANSMITTING INFORMATION

Номер: US20220015105A1
Автор: Lin Yanan, Shi Cong, Xu Jing
Принадлежит:

Disclosed by the present disclosure are a method, terminal device and network device for repeatedly transmitting information, the method comprising: on continuous time-domain resources of at least one continuous time slot, transmitting K uplink transmission channels which are used for independent transmission of target data, wherein K is an integer greater than or equal to 2, and the transmission of K uplink transmission channels on continuous time-domain resources comprises: when remaining time-domain resources of an m-th slot cannot carry an entire n-th uplink transmission channel, transmitting the n-th uplink transmission channel in the m+1-th slot, or, transmitting the incomplete n-th uplink transmission channel in the remaining time-domain resources of the m-th slot, wherein n is an integer greater than or equal to 1 and less than or equal to k, and m is an integer greater than or equal to 1. 1. A method for repeatedly transmitting information , comprising:using, by a terminal device, remaining symbols in one slot to transmit a Physical Uplink Shared Channel (PUSCH) carrying target data, wherein a quantity of the remaining symbols is less than L;wherein the terminal device is configured to repeatedly transmit K PUSCH repetitions in continuous time domain symbols, and each repetition occupies L time domain symbols, wherein K is an integer greater than or equal to 2, and L is positive integer, and the one slot is one of multiple slots configured to transmit PUSCH repetitions carrying the target data, and time domain resources configured to transmit the PUSCH repetitions carrying the target data comprise the remaining symbols.2. The method of claim 1 , wherein the remaining symbols in one slot are continuous and comprise a last time domain symbol of the one slot.3. The method of claim 1 , wherein the quantity of the remaining symbols is greater than or equal to a preset threshold.4. The method of claim 1 , wherein the L is less than time domain symbols of one slot ...

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Номер записи: 29
13-01-2022 дата публикации

RELAY OPERATIONS IN A COMMUNICATION SYSTEM

Номер: US20220015143A1
Автор: Hakola Sami-Jukka, Hooli Kari Juhani, Koskela Timo, Tiirola Esa Tapani
Принадлежит:

A method comprising: determining a time domain resource partitioning that comprises at least a first pattern and a second pattern, wherein the first pattern comprises a first number of portions allocated to uplink transmission and/or downlink transmission and is associated with a first link category and the second pattern comprises a second number of portions allocated to uplink transmission and/or downlink transmission and is associated with a second link category; determining if link category for transmission is the first or the second link category; determining if the channel is available for the transmission according to a pattern associated with the determined link category, wherein the pattern associated with the determined link category corresponds to the first or the second pattern; and if the channel is available, acquiring the channel and transmit according to the pattern associated with the determined link category. 123-. (canceled)24. An apparatus comprising:at least one processor, andat least one memory including a computer program code, wherein the at least one memory and the computer program code are configured, with the at least one processor, to cause the apparatus to:determine a time domain resource partitioning that comprises at least a first pattern and a second pattern, wherein the first pattern comprises a first number of portions allocated to uplink transmission and/or downlink transmission and is associated with a first link category and the second pattern comprises a second number of portions allocated to uplink transmission and/or downlink transmission and is associated with a second link category;determine if link category for transmission is the first or the second link category;determine if the channel is available for the transmission according to a pattern associated with the determined link category, wherein the pattern associated with the determined link category corresponds to the first or the second pattern; and if the channel is ...

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Номер записи: 30
13-01-2022 дата публикации

METHOD FOR SHARING CHANNEL OCCUPANCY TIME AND DEVICE

Номер: US20220015144A1
Автор: JIANG Lei, Li Can, Shen Xiaodong
Принадлежит:

Embodiments of this disclosure disclose a method for sharing a channel occupancy time and a device. The method includes: determining uplink control information UCI, where the UCI includes first indication information, the first indication information is used to enable a network device to determine related information about downlink transmission in a target time period, a terminal device shares a target channel occupancy time COT in the target time period with the network device, and the target COT is obtained by the terminal device based on listen before talk LBT; and transmitting the UCI. 1. A method for sharing a channel occupancy time , applied to a terminal device and comprising:determining uplink control information (UCI), wherein the UCI comprises first indication information, the first indication information is used to enable a network device to determine related information about downlink transmission in a target time period, the terminal device shares a target channel occupancy time (COT) in the target time period with the network device, and the target COT is obtained by the terminal device based on listen before talk (LBT); andtransmitting the UCI.2. The method according to claim 1 , wherein the related information comprises a type of downlink transmission information claim 1 , and the first indication information is used to indicate the type of downlink transmission information.3. The method according to claim 2 , further comprising:determining the type of downlink transmission information based on a channel access priority class used when the terminal device obtains the target COT based on LBT.4. The method according to claim 3 , wherein the determining the type of downlink transmission information according to a channel access priority class used when the terminal device obtains the target COT based on LBT comprises:if the channel access priority class used when the terminal device obtains the target COT based on LBT is a target channel access priority ...

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Номер записи: 31
13-01-2022 дата публикации

METHOD AND APPARATUS FOR HANDLING A DRX TIMER FOR BUNDLE OF A CONFIGURED UPLINK GRANT IN A WIRELESS COMMUNICATION SYSTEM

Номер: US20220015187A1
Автор: Huang Yi-Hsuan, Ou Meng-Hui, Tseng Li-Chih
Принадлежит:

A method and apparatus are disclosed. In an example from the perspective of a User Equipment (UE) configured with bundled transmission, the UE initializes a configured uplink grant. The UE performs a plurality of transmissions within a bundle of a Medium Access Control Protocol Data Unit (MAC PDU) using the configured uplink grant. The UE stops a Discontinuous Reception (DRX) timer in response to a first transmission of the plurality of transmissions, wherein the DRX timer is not stopped in response to one or more second transmissions of the plurality of transmissions. When the DRX timer is running, the UE monitors a downlink control channel for an uplink grant for retransmission. 1. A method of a User Equipment (UE) configured with bundled transmission , the method comprising:initializing a configured uplink grant;performing a plurality of transmissions within a bundle of a Medium Access Control Protocol Data Unit (MAC PDU) using the configured uplink grant;stopping a Discontinuous Reception (DRX) timer in response to a first transmission of the plurality of transmissions, wherein the DRX timer is not stopped in response to one or more second transmissions of the plurality of transmissions; andmonitoring, when the DRX timer is running, a downlink control channel for an uplink grant for retransmission.2. The method of claim 1 , wherein:the first transmission is an earliest transmission within the bundle.3. The method of claim 1 , wherein:the one or more second transmissions are one or more retransmissions of the first transmission.4. The method of claim 1 , wherein:the stopping the DRX timer is performed at the first transmission.5. The method of claim 1 , comprising:starting a Hybrid Automatic Repeat Request (HARQ) Round-Trip Time (RTT) timer in response to the first transmission; andstarting the DRX timer in response to expiration of the HARQ RTT timer.6. The method of claim 5 , wherein:a duration of the HARQ RTT timer corresponds to a minimum duration before a UL ...

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Номер записи: 32
05-01-2017 дата публикации

WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD

Номер: US20170006581A1
Автор: Adachi Tomoko, Matsuo Ryoko
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, a wireless communication device includes a transmitter configured to transmit first information specifying at least one communication resource requested to be allocated; and a receiver configured to receive second information specifying at least one communication resource allocated depending on the first information. The transmitter is configured to transmit a signal via the allocated communication resource and the receiver is configured to receive a signal via the allocated communication resource. 1. A wireless communication device comprising:a transmitter configured to transmit first information specifying at least one communication resource requested to be allocated; anda receiver configured to receive second information specifying at least one communication resource allocated depending on the first information;wherein the transmitter is configured to transmit a signal via the allocated communication resource and the receiver is configured to receive a signal via the allocated communication resource.2. The wireless communication device according to claim 1 , further comprising:controlling circuitry configured to select the at least one communication resource requested to be allocated, from a plurality of communication resources each belonging to any one of one or more channels, whereinthe controlling circuitry is configured to select, based on carrier-sensing of the one or more channels, the at least one communication resource requested to be allocated,wherein the first information specifies the selected communication resource and the channel to which the selected communication resource belongs.3. The wireless communication device according to claim 2 , wherein the controlling circuitry is configured to select two or more consecutive communication resources.4. The wireless communication device according to claim 1 , whereinthe first information includesat least one set of: a smallest or largest communication resource number of ...

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Номер записи: 33
05-01-2017 дата публикации

WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD

Номер: US20170006596A1
Автор: Adachi Tomoko, Matsuo Ryoko
Принадлежит: KABUSHIKI KAISHA TOSHIBA

According to one embodiment, integrated circuitry installed in a wireless communication device, includes a transmitter configured to transmit a first information showing a number of channel sets each of which is configured by one channel or two or more consecutive channels in a plurality of channels in a predetermined frequency band and among each of which a signal is separately able to be transmitted and received; and a receiver configured to receive a signal in the predetermined frequency band. 1. A wireless communication device , comprising:a transmitter configured to transmit a first information showing a number of channel sets each of which is configured by one channel or two or more consecutive channels in a plurality of channels in a predetermined frequency band and among each of which a signal is separately able to be transmitted and received; anda receiver configured to receive a signal in the predetermined frequency band.2. The wireless communication device according to claim 1 , wherein the first information shows a maximum number of the channel sets among each of which the signal can be separately transmitted and received.3. The wireless communication device according to claim 1 , wherein whether a carrier sensing state is busy or idle is determined in each of the channel sets in units of channel sets.4. The wireless communication device according to claim 1 , whereinthe receiver is configured to receive a second information notifying that a simultaneous transmission or a simultaneous reception is possible with a plurality of wireless communication devices using all or part of the plurality of channelswherein the transmitter is configured to transmit the first information as response to the second information.5. The wireless communication device according to claim 1 , whereinthe receiver is configured to receive a third information that notifies a required number of channel sets among each of which the signal can be separately transmitted and received, ...

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Номер записи: 34
05-01-2017 дата публикации

SENSITIVITY TUNING IN WIRELESS NETWORKS

Номер: US20170006616A1
Автор: Choudhury Sayantan, Lee Namyoon, Rantala Enrico-Henrik, Singh Sarabjot, Tuomaala Esa Juhani
Принадлежит:

An access point in a random access wireless network is presented, which performs medium access control for transmissions from a plurality of stations to the access point using a carrier sense multiple access protocol. The CSMA protocol is based on the access point having a variable sensitivity level to detecting other transmissions on a wireless channel in order to avoid data collisions. In a dense network environment, the sensitivity level can be reduced to avoid detecting transmissions to other access points, and thus improve area efficiency. 1. A method comprising:setting a receiver of a first apparatus to first and second sensitivity thresholds at which transmissions occurring on a wireless channel can be detected, wherein the first apparatus is associated with one or more other apparatuses; anddetecting with the first apparatus whether transmissions are occurring on the wireless channel with the receiver set to the first sensitivity threshold during a first period within a beacon period and with the receiver set to the second sensitivity threshold during a second period within the beacon period.2. The method claim 1 , comprising:determining the second sensitivity threshold based on a poorest quality link amongst one or more links respectively between the first apparatus and the one or more other apparatuses.3. The method of claim 2 , comprising:determining the first sensitivity threshold based on a stored default sensitivity threshold of the receiver.4. The method of claim 2 , comprising:receiving one or more quality indicators, each representing a quality of the wireless channel between a respective one of one or more other apparatuses and the receiver; anddetermining the poorest quality link based on the one or more quality indicators.5. The method of claim 1 , comprising:associating one or more additional apparatuses with the first apparatus in response to the receiver, when set to the first sensitivity threshold, receiving communications on the wireless ...

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Номер записи: 35
04-01-2018 дата публикации

WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD

Номер: US20180006751A1
Автор: YUNOKI Katsuo, ZHAO Bingxuan
Принадлежит: KDDI CORPORATION

A wireless communication device transmits data to multiple wireless terminals at the same timing. The wireless communication device includes a complement calculation part configured to calculate the amount of complement for transmission data for each wireless terminal among multiple wireless terminals on multiple subcarriers distributed and assigned thereto, a complementation part configured to complement transmission data using the amount of complement calculated for each wireless terminal, and a transmitter configured to transmit the complemented transmission data to multiple wireless terminals via multiple subcarriers. The wireless communication device further includes a frame generator configured to generate frames (e.g. OFDMA frames) used to multiplex and transmit the complemented transmission data to multiple wireless terminals. The complement calculation part calculates the amount of complement based on the number of available subcarriers, which is determined via carrier sensing. 1. A wireless communication device able to transmit data to multiple wireless terminals at a same timing , comprising:a complement calculation part configured to calculate an amount of complement for transmission data for each wireless terminal among the multiple wireless terminals on multiple subcarriers distributed and assigned thereto;a complementation part configured to complement the transmission data using the complement calculated for each wireless terminal; anda transmitter configured to transmit the complemented transmission data to the multiple wireless terminals via the multiple subcarriers.2. The wireless communication device according to claim 1 , further comprising a frame generator configured to generate a frame used to multiplex and transmit the complemented transmission data to the multiple wireless terminals.3. The wireless communication device according to claim 2 , wherein the complementation part complements the transmission data using a bit string (EOF) ...

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Номер записи: 36
07-01-2016 дата публикации

WIRELESS COMMUNICATION APPARATUS

Номер: US20160007305A1
Автор: Adachi Tomoko, Hirano Tatsuma, Matsuo Ryoko, Nabetani Toshihisa, Toshimitsu Kiyoshi
Принадлежит:

A wireless communication apparatus includes a transmitter that transmits a first frame and a second frame with multiplexing and a receiver that receives a third frame sent in response to the first frame and a forth frame sent in response to the second frame, wherein a first receipt completion timing at which the third frame is fully received by the receiver and a second receipt completion timing at which the forth frame is fully received by the receiver are synchronized by controlling at least one of first content of the first frame, a first transmission method by which the first frame is sent, second content of the second frame and a second transmission method by which the second frame is sent. 1. A wireless communication apparatus comprising:a transmitter that transmits a first frame and a second frame with multiplexing; anda receiver that receives a third frame sent in response to the first frame and a forth frame sent in response to the second frame,wherein a first receipt completion timing at which the third frame is fully received by the receiver and a second receipt completion timing at which the forth frame is fully received by the receiver are synchronized by controlling at least one of first content of the first frame, a first transmission method by which the first frame is sent, second content of the second frame and a second transmission method by which the second frame is sent.2. The apparatus of claim 1 , wherein a difference between a length of the third frame and a length of the forth frame varies based on at least one of the first content claim 1 , the first transmission method claim 1 , the second content and a second transmission method.3. The apparatus of claim 2 , wherein the difference includes zero.4. The apparatus of claim 1 , wherein the first transmission method is a transmission rate of the first frame and the second transmission method is a transmission rate of the second frame.5. The apparatus of claim 1 , wherein the first content is ...

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Номер записи: 37
03-01-2019 дата публикации

WIRELESS SIGNAL TRANSMISSION METHOD AND SYSTEM

Номер: US20190007161A1
Автор: Lv Kaiying, Tian Kaibo, Xing Weimin
Принадлежит: ZTE CORPORATION

A wireless signal transmission method includes: transmitting, by a transmitting station, a wireless signal to a plurality of receiving stations, wherein the wireless signal comprises a first portion and a second portion, the first portion being a trigger frame with a first type of frame format which can be independently decoded, the second portion being a specific signal with a second type of frame format; and receiving, by the transmitting station, a radio frame transmitted by at least one of the plurality of receiving stations. The wireless signal transmission method provided by the present disclosure are used to solve the problems in the prior art that a trigger frame is not able to complete transmission resources reservation and trigger multi-user transmission at the same time as satisfying the training accuracy required for uplink multi-user transmission. 1. A wireless signal transmission method , comprising:transmitting, by a transmitting station, a wireless signal to one or more receiving stations, wherein the wireless signal comprises a first portion and a second portion, the first portion being a trigger frame with a first type of frame format which can be independently decoded, the second portion being a specific signal with a second type of frame format; andreceiving, by the transmitting station, a radio frame transmitted by at least one of the plurality of receiving stations.2. The method according to claim 1 , wherein the trigger frame comprises a physical layer frame header with the first type of frame format and a data payload with the first type of frame format claim 1 , the physical layer frame header with the first type of frame format is configured to assist the receiving station in receiving the data payload with the first type of frame format claim 1 , the data payload with the first type of frame format is configured to trigger the receiving station to transmit the radio frame to the transmitting station; and the specific signal with the second ...

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Номер записи: 38
03-01-2019 дата публикации

METHOD AND APPARATUS FOR PERFORMING FRACTIONAL SUBFRAME TRANSMISSION

Номер: US20190007178A1
Автор: JIANG Chuangxin, JIANG Lei, Liu Hongmei, Sun Zhennian, Wang Gang
Принадлежит: NEC Corporation

Embodiments of the disclosure provide a method and apparatus for performing fractional subframe transmission. The method may comprise: in response to detecting that a channel becomes available, determining a target position from at least one potential position predefined in a subframe; and performing the fractional subframe transmission from the target position. 1. A method of performing transmission , the method comprising:sending to a user equipment (UE) in subframe n, an information capable of indicating a configuration of symbols used for a downlink transmission in subframe n+1 in an unlicensed spectrum; andperforming the downlink transmission in the subframe n+1.2. The method of claim 1 , wherein the configuration the symbols is configuration of occupied symbols for the downlink transmission.3. The method of claim 1 , further comprising: performing the downlink transmission in a channel after sensing the channel to be idle.4. The method of claim 1 , further comprising: sending to the UE claim 1 , information indicating possible starting positions of the downlink transmission.5. The method of claim 4 , wherein the possible starting positions of the downlink transmission is periodical.6. A method of performing reception claim 4 , the method comprising:receiving from a base station in subframe n, an information capable of indicating a configuration of symbols used for a downlink transmission in subframe n+1 in an unlicensed spectrum; andreceiving the downlink transmission in the subframe n+1.7. The method of claim 6 , wherein the configuration the symbols is configuration of occupied symbols for the downlink transmission.8. The method of claim 6 , wherein the downlink transmission is performed in a channel after the channel is sensed to be idle.9. The method of claim 6 , further comprising: receiving from the BS claim 6 , information indicating possible starting positions of the downlink transmission.10. The method of claim 9 , wherein the possible starting ...

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Номер записи: 39
07-01-2021 дата публикации

SYSTEM AND METHOD FOR USER EQUIPMENT IDENTIFICATION AND COMMUNICATIONS

Номер: US20210006968A1
Автор: Gage William Anthony, Tenny Nathan Edward
Принадлежит:

A method for identifier management for user devices operating in an inactive mode includes receiving a first uplink transmission including a user device identifier associated with a user device, transmitting a first downlink transmission including an indication of an ephemeral identifier assigned to the user device, transmitting a second downlink transmission including data associated with the ephemeral identifier, and discarding the ephemeral identifier. 1. A method comprising:receiving, by a serving node in a wireless communication system from a user equipment (UE) in an inactive mode, a UE identifier (UE ID), a session identifier (session ID), and a plurality of uplink radio link protocol data units (PDUs) corresponding to an uplink user data PDU, each uplink radio link PDU of the plurality of uplink radio link PDUs comprising a segment containing one or more octets of the uplink user data PDU;constructing, by the serving node, the uplink user data PDU based on the plurality of uplink radio link PDUs, using the segment containing the one or more octets of the uplink user data PDU in each uplink radio link PDU;transmitting, by the serving node to the UE in response to receiving the plurality of uplink radio link PDUs, a connection status indicator comprising one of: a connection release indication instructing the UE to release a connection and a connection hold indication instructing the UE to hold the connection; andtransmitting, by the serving node, to an anchor node in the wireless communication system, the UE ID, the session ID, and the constructed uplink user data PDU, wherein the anchor node is associated with the UE ID.2. The method of claim 1 , wherein each uplink radio link PDU further comprises one or more of: a PDU identifier (PDU ID) claim 1 , a segment offset claim 1 , a first segment indication claim 1 , and a last segment indication; andwherein constructing the uplink user data PDU further comprises:constructing, by the serving node, the uplink user ...

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Номер записи: 40
07-01-2021 дата публикации

RESERVING FUTURE CHANNEL TIME ON WIRELESS LOCAL AREA NETWORK

Номер: US20210007016A1
Автор: Abouelseoud Mohamed, Sakoda Kazuyuki, Xin Liangxiao
Принадлежит: SONY CORPORATION

A wireless communication circuit configured for communicating over a wireless local area network (WLAN) in its reception area to communicate real-time application (RTA) packets as well as non-real time (non-RTA) packets while utilizing carrier sense multiple access/collision avoidance (CSMA/CA). An RTA scheduling table is utilized for tracking active RTA sessions and managing transmission times for RTA traffic. Scheduling of channel time based on the expected RTA packet arrival time, and rejecting other packet transmissions during the scheduled channel time for RTA packet. 1. An apparatus for wireless communication in a network , the apparatus comprising:(a) a wireless communication circuit configured for wirelessly communicating with at least one other wireless local area network (WLAN) station in its reception area;(b) a processor coupled to said wireless communication circuit within a station configured for operating on the WLAN;(c) a non-transitory memory storing instructions executable by the processor; and (i) operating said wireless communication circuit as a WLAN station configured to support communicating real-time application (RTA) packets that are sensitive to communication delays as well as communicating non-real time packets;', '(ii) distinguishing real-time application (RTA) packets from non-real-time application (non-RTA) packets;', '(iii) utilizing carrier sense multiple access/collision avoidance (CSMA/CA) in which real time application (RTA) traffic and non-RTA traffic coexist;', '(iv) maintaining an RTA scheduling table for tracking active RTA sessions and managing transmission times for RTA traffic;', '(v) scheduling channel time based on the expected RTA packet arrival time; and', '(vi) rejecting other packet transmissions during the scheduled channel time for RTA packet., '(d) wherein said instructions, when executed by the processor, perform one or more steps comprising2. The apparatus of claim 1 , wherein said instructions when executed by ...

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Номер записи: 41
07-01-2021 дата публикации

RADIO COMMUNICATION METHOD AND BASE STATION

Номер: US20210007045A1
Автор: ABEYSEKERA Hirantha, INOKI Akiyoshi, Murakami Tomoki, NAKAHIRA Toshiro, WAKAO Keisuke
Принадлежит: Nippon Telegraph and Telephone Corporation

[Problem] The base station includes a plurality of radio communication units configured to individually support a plurality of communication capabilities, and performs, for a terminal station that is connected to the base station, control for selecting a radio communication unit based on a communication scheme supported in the terminal station. 1. A radio communication method for a radio communication system , the radio communication system including a plurality of base stations provided with a plurality of radio communication units for which different communication schemes are settable , and a terminal station configured to perform radio communication with the radio communication unit of the base station by using a specific communication scheme , the radio communication method comprising:setting, at the base station, for the radio communication units, different communication schemes based on a setting policy of the communication scheme, and a switching policy used for selecting the radio communication unit to which the terminal station is to be connected;collecting, at the base station, communication scheme information on a communication scheme selectable by the terminal station, when the terminal station establishes a connection or a reconnection with the base station;selecting, at the base station, a radio communication unit to which the terminal station is to be connected, in accordance with the communication scheme information, the setting policy, and the switching policy; andupdating, at the base station, the setting policy and the switching policy for the radio communication unit based on the communication scheme information.2. A radio communication method for a radio communication system , the radio communication system including a plurality of base stations provided with a plurality of radio communication units for which different communication schemes are settable , and a terminal station configured to perform radio communication with the radio ...

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Номер записи: 42
07-01-2021 дата публикации

METHODS AND APPARATUS TO FACILITATE SLEEP MECHANISMS FOR READ-ONLY MODE DEVICES IN A DEDICATED CARRIER

Номер: US20210007049A1
Автор: Catovic Amer, RICO ALVARINO Alberto
Принадлежит:

Apparatus, methods, and computer-readable media for facilitating sleep mechanisms for read-only mode devices in a dedicated carrier are disclosed herein. An example method for wireless communication at a UE includes triggering a transition to an active mode, from a sleep mode, based on an occurrence of an active mode transitioning trigger event. In some examples, the active mode transitioning trigger event includes at least one of a system information transmission occasion, a control information transmission occasion, or a user data transmission occasion. The example method also includes transitioning to the active mode, from the sleep mode, based on the occurrence of the active mode transitioning trigger event. In some examples, the occurrence of the system information transmission occasion or the control information transmission occasion may occur during a CAS region of a broadcast transmission, and the occurrence of the user data transmission occasion may occur during the broadcast transmission. 1. A method of wireless communication by a receive-only mode user equipment (UE) , comprising:triggering a transition to an active mode, from a sleep mode, based on an occurrence of an active mode transitioning trigger event, wherein the active mode transitioning trigger event comprises at least one of a system information transmission occasion, a control information transmission occasion, and a user data transmission occasion; andtransitioning to the active mode, from the sleep mode, based on the occurrence of the active mode transitioning trigger.2. The method of claim 1 , wherein the occurrence of the system information transmission occasion or the control information transmission occasion occurs during a non-Multicast Broadcast Single Frequency Network (MBSFN) subframe of a broadcast carrier claim 1 , and wherein the occurrence of the user data transmission occasion occurs during an MBSFN subframe of the broadcast carrier.3. The method of claim 2 , wherein the MBSFN ...

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Номер записи: 43
07-01-2021 дата публикации

Signal transmission method, network device, and terminal device

Номер: US20210007069A1
Автор: Hai Tang
Принадлежит: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD

Implementations of the present disclosure provide a signal transmission method, a network device, and a terminal device. The method comprises: a network device detecting a first carrier, and determining, according to the detection result, a time-frequency resource granted a channel license from M1 time-frequency resources, wherein the M1 time-frequency resources are time-frequency resources that the network device configures for a first period on the first carrier and are available to transmit a first synchronization signal/PBCH block (SSB, or SS/PBCH block), wherein M1 is a positive integer, and M1≥2; and the network device transmitting the first SSB to a terminal device via the first time-frequency resource.

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Номер записи: 44
07-01-2021 дата публикации

PAGING ON AN OPEN SPECTRUM

Номер: US20210007076A1
Автор: LJUNG Rickard
Принадлежит:

A method comprises transmitting, to a terminal (), at least one synchronization signal burst () in a time-limited channel access interval () of an open spectrum (). The method further comprises transmitting, to the terminal (), at least one paging signal () in the channel access interval () of the open spectrum (). 1. A method of operating a base station , comprising:transmitting, to a terminal, at least one synchronization signal burst in a time-limited channel access interval of an open spectrum, andtransmitting, to the terminal, at least one paging signal in the channel access interval of the open spectrum.2. A method of operating a terminal , comprising:implementing a first reception attempt for at least one synchronization signal burst on an open spectrum, andimplementing a second reception attempt for at least one paging signal-on the open spectrum,wherein the first reception attempt and the second reception attempt are implemented in a common, time-limited channel access interval of the open spectrum.3. The method of claim 2 , further comprising:depending on a first result of the first reception attempt: selectively activating a backoff for a further first reception attempt for the at least one synchronization signal burst and a further second reception attempt for the at least one paging signal.4. The method of claim 3 ,wherein the first reception attempt and the second reception attempt are implemented in accordance with a timing schedule of a discontinuous reception cycle of the terminal,wherein the method further comprises:depending on the first result and depending on the second result: selectively activating an OFF duration of the discontinuous reception cycle.5. The method of claim 4 ,wherein the OFF duration is activated at least if the first reception attempt-succeeds and the second reception attempt fails.6. The method of claim 3 ,wherein the backoff is activated if the first reception attempt fails,wherein the backoff is not activated if the first ...

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Номер записи: 45
04-01-2018 дата публикации

Wireless communication device, wireless communication terminal and wireless communication method

Номер: US20180007561A1
Автор: Hiroki Mori, Kentaro Taniguchi, Ryoko Matsuo, Tomoko Adachi, Tomoya Tandai
Принадлежит: Toshiba Corp

According to one embodiment, a wireless communication device, includes a receiver configured to receive a first field, receive at least one of a plurality of second fields having been multiplexed and transmitted, and decode the one of the second fields to obtain a frame in a case where first information identifying the wireless communication device is not set in the first field, and a controller configured to suppress access to a wireless medium during a period indicated by a value set in the frame.

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Номер записи: 46
04-01-2018 дата публикации

METHOD FOR RECEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUS FOR THE METHOD

Номер: US20180007576A1
Автор: CHAE Hyukjin, LEE Hyunho, Park Hanjun
Принадлежит:

Disclosed is a method for receiving a reference signal for determining location by means of one or more unlicensed band cells in a wireless communication system, and the method, carried out by a terminal, may comprise the steps of: receiving configuration information associated with a positioning reference signal (PRS) transmitted by means of one or more unlicensed band cells, the PRS-related configuration information comprising information regarding the subframe from which the PRS is transmitted; receiving and measuring the PRS by means of the PRS-related configuration information; and reporting the results of the PRS measurement to a serving base station. 1. A method for receiving a reference signal for positioning through one or more unlicensed band cells in a wireless communication system , the method being carried out by a terminal and comprising:receiving positioning reference signal (PRS) related configuration information transmitted through the one or more unlicensed band cells, the PRS related configuration information including information on a subframe in which the PRS is transmitted;receiving and measuring the PRS by using the PRS related configuration information; andreporting a measurement result of the PRS to a serving base station.2. The method according to claim 1 , wherein the information on a subframe in which the PRS is transmitted indicates at least one subframe which belongs to a resource period obtained in a corresponding unlicensed band cell.3. The method according to claim 1 , wherein the information on a subframe in which the PRS is transmitted indicates a period or a offset value of a specific subframe.4. The method according to claim 1 , wherein the information on a subframe in which the PRS is transmitted indicates a period or a offset value of a subframe of a licensed band cell to which the PRS is transmitted.5. The method according to claim 4 , wherein the PRS is transmitted in the subframe which belongs to a resource period obtained ...

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Номер записи: 47
07-01-2021 дата публикации

METHODS FOR UNLICENSED RESOURCE SELECTION

Номер: US20210007101A1
Автор: Marinier Paul, Pelletier Ghyslain, Tooher J. Patrick
Принадлежит:

Methods and apparatuses are described herein for accessing an unlicensed spectrum using portions of a carrier's bandwidth (BW). For example, a wireless transmit receive unit (WTRU) may access a serving cell through an initial bandwidth part (BWP). The WTRU may be configured with a plurality of BWPs within an unlicensed frequency spectrum. The WTRU may then determine any of at least one monitoring period and at least one offset per each BWP. The WTRU may then monitor the BWPs based on any of the at least one monitoring period and the at least one offset. The WTRU may receive at least one signal from the serving cell. The signal may be at least one of a downlink control information (DCI), a synchronization signal block (SSB), a reference signal, or a preamble. 1. A method for use in a wireless transmit receive unit (WTRU) , the method comprising:monitoring a plurality of bandwidth sub bands (BWSBs) in an unlicensed frequency spectrum to determine the availability of an uplink channel using any of a set of monitoring occasions per BWSB and at least one time offset per BWSB, wherein the monitoring occasions of said set occur repeatedly in time, the time offset being different per BWSB; andon condition the uplink channel is determined to be available in a monitored BWSB based on any of a monitoring occasion in the set of monitoring occasions and the at least one time offset, transmitting on the acquired monitored BWSB.2. The method of claim 1 , further comprising receiving by the WTRU a BWSB agnostic grant for an uplink (UL) transmission and transmitting the UL transmission on the acquired monitored BWSB.3. The method of claim 1 , further comprising receiving by the WTRU a BWSB agnostic grant for an UL transmission claim 1 , said receiving the BWSB agnostic grant triggering said monitoring of the plurality of BWSBs.4. The method of claim 3 , wherein the BWSB is according acquired based on said triggered monitoring and the UL transmission is transmitted on the acquired ...

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Номер записи: 48
07-01-2021 дата публикации

COMMUNICATION METHOD AND DEVICE

Номер: US20210007108A1
Автор: Tang Hai
Принадлежит:

Provided are a communication method and device. The method includes: a terminal device receives, from a network device, indication information indicating a working frequency band attribute or system attribute of the network device, the working frequency band attribute representing whether a working frequency band of the network device is a licensed or unlicensed frequency band and the system attribute representing whether the network device works in a licensed or unlicensed frequency band system; and the terminal device performs communication with the network device according to the working frequency band attribute or the system attribute. When roaming in different countries or regions, the terminal device can effectively know whether a frequency band of a network presently to access is an unlicensed or licensed frequency band and thus execute an operation to implement effective data transmission in different frequency bands even though different spectrum division manners are adopted there. 1. A communication method , comprising:receiving, by a terminal device, indication information from a network device, wherein the indication information is configured to indicate a working frequency band attribute or a system attribute of the network device, the working frequency band attribute is configured to represent whether a working frequency band of the network device is a licensed frequency band or an unlicensed frequency band and the system attribute is configured to represent whether the network device works in a licensed frequency band system or an unlicensed frequency band system; andperforming, by the terminal device, communication with the network device according to the working frequency band attribute or the system attribute.2. The communication method of claim 1 , wherein the indication information is any one of:a primary synchronous signal (PSS) in a synchronous signal block (SSB), a physical broadcast channel (PBCH) in the SSB or radio resource control (RRC) ...

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Номер записи: 49
07-01-2021 дата публикации

Method for uplink channel access to unlicensed band in wireless communication system, and device therefor

Номер: US20210007115A1
Автор: Jinsam Kwak, Juhyung Son, Minseok Noh
Принадлежит: Wilus Institute of Standards and Technology Inc

A method for performing an uplink transmission to a base station by a user equipment through an unlicensed cell in a wireless communication system is provided. The method includes: receiving an uplink grant that schedules the uplink transmission in at least one subframe from the base station; and performing the uplink transmission in the at least one subframe using at least one of a first type channel access or a second type channel access. The uplink transmission is performed using the second type channel access when all of the at least one subframe is included in a predetermined interval determined based on a downlink transmission through the unlicensed cell from the base station.

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Номер записи: 50
07-01-2021 дата публикации

HANDLING GAPS IN UPLINK TRANSMISSION IN NEW RADIO UNLICENSED

Номер: US20210007128A1
Автор: Bhattad Kapil, Datta Tanumay, DEOGUN Pravjyot Singh, Sun Jing, Zhang Xiaoxia
Принадлежит:

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a set of one or more uplink grants scheduling at least a first uplink transmission and a second uplink transmission during a channel occupancy time of an unlicensed radio frequency spectrum band. The UE may identify a transmission gap between the first uplink transmission and the second uplink transmission of the plurality of uplink transmissions by the UE during the channel occupancy time, the transmission gap exceeding a threshold time. The UE may determine that the transmission gap corresponds to a lost uplink grant. The UE may modify the first uplink transmission or the second uplink transmission based at least in part on the determination that the transmission gap corresponds to the lost uplink grant. 1. A method for wireless communication at a user equipment (UE) , comprising:receiving an uplink grant scheduling a plurality of uplink transmissions during a plurality of transmission time intervals (TTIs) in an unlicensed radio frequency spectrum band;modifying one or more uplink transmissions of the plurality of uplink transmissions based at least in part on the uplink grant; andperforming the plurality of uplink transmissions based at least in part on the uplink grant and the modifying.2. The method of claim 1 , wherein modifying the one or more uplink transmissions comprises:reordering, based at least in part on the uplink grant, the plurality of uplink transmissions.3. The method of claim 2 , wherein the reordering the plurality of uplink transmissions comprises scheduling uplink retransmissions before scheduling new uplink transmissions.4. The method of claim 1 , wherein modifying the one or more uplink transmissions comprises:adding padding bits to a subset of the plurality of uplink transmissions for which no data is available.5. The method of claim 1 , wherein modifying the one or more uplink transmissions comprises:adding padding bits to each of ...

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Номер записи: 51
07-01-2021 дата публикации

LBT PARAMETERS FOR UPLINK IN UNLICENSED SPECTRUM

Номер: US20210007136A1
Автор: Falahati Sorour, KOORAPATY Havish
Принадлежит:

According to some embodiments, a method for use in a user equipment (UE) of managing a listen-before-talk (LBT) contention window size comprises transmitting a first burst of uplink subframes after a first LBT procedure performed using an LBT contention window size, and determining a reference subframe based on the first burst. The reference subframe is associated with a reference hybrid automatic repeat request (HARQ) process identifier. The method further comprises receiving scheduling for a second burst of uplink subframes. The scheduling comprises an associated HARQ process identifier and an associated new data indicator (NDI) for each subframe. When the UE determines the HARQ process identifier associated with at least one of the subframes of the second burst matches the reference HARQ process identifier, then if the associated NDI indicates new data, the method resets the LBT contention window size, else the method increments the LBT contention window size. 1. A method for use in a network node of signaling listen-before-talk (LBT) parameters , the method comprising:receiving a first burst of uplink subframes from a user equipment (UE) after a first LBT procedure, each subframe of the first burst of uplink subframes associated with one or more transport blocks, and each transport block associated with a hybrid automatic repeat request (HARQ) process identifier;determining a set of transport blocks in the first burst of uplink subframes that were not received successfully by the network node; andbefore scheduling the UE with a second LBT procedure, scheduling the UE with a second burst of uplink subframes using all the HARQ process identifiers associated with the transport blocks in the determined set of transport blocks.2. The method of claim 1 , wherein determining the set of transport blocks in the first burst of uplink subframes that were not received successfully by the network node comprises:determining a reference subframe based on the last subframe ...

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Номер записи: 52
07-01-2021 дата публикации

MU-MIMO PRE-PACKET ARRIVAL CHANNEL CONTENTION

Номер: US20210007137A1
Автор: Abouelseoud Mohamed, Sakoda Kazuyuki, Xin Liangxiao
Принадлежит: SONY CORPORATION

Systems, apparatus and methods for wireless local area network (WLAN) communication which support real-time application (RTA) packets. The access point (AP) schedules multiple-user (MU) multiple-input-multiple-output (MIMO) transmissions for uplink (UL) or downlink (DL) for RTA packets by allocating resources to packet transmissions before RTA packet arrival. The AP contends for channel access before the expected time of arrival of the RTA packet in the DL or UL direction. The operations reduce RTA packet latency on the WLAN. 1. An apparatus for wireless communication in a network , the apparatus comprising:(a) a wireless communication circuit configured as a station for wirelessly communicating with at least one other wireless local area network (WLAN) station in its reception area, and operating as either an access point (AP) or a non-AP;(b) a processor coupled to said wireless communication circuit within a station configured for operating on the WLAN;(c) a non-transitory memory storing instructions executable by the processor; and (i) operating said wireless communication circuit as a WLAN station configured to support communicating real-time application (RTA) packets that are sensitive to communication delays as well as non-real time packets;', '(ii) distinguishing real-time application (RTA) packets from non-real-time application (non-RTA) packets by prior negotiation, or packet header information, or a combination of prior negotiation and packet header information;', '(iii) obtaining information on RTA packet arrival time and periodicity when operating as an AP performing DL MU-MIMO transmission, or when operating as a non-AP station performing UL MU MIMO transmission;', '(iv) wherein said station operating as an access point (AP) scheduling multiple-user (MU) multiple-input-multiple-output (MIMO) transmissions for uplink (UL) or downlink (DL) for RTA packets performs allocating resources to packet transmission before RTA packet arrival; and', '(v) contending ...

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Номер записи: 53
07-01-2021 дата публикации

Transmission and Scheduling for Multiple Panels

Номер: US20210007138A1
Автор: Babaei Alireza, Cirik Ali Cagatay, Dinan Esmael Hejazi, Hui Bing, Jeon Hyoungsuk, PARK Kyungmin, Xu Kai, YI Yunjung, ZHOU Hua
Принадлежит:

A wireless device receives, from a base station, one or more messages indicating: a number of repetition transmission occasions for uplink transmission of a transport block; and an interval for switching uplink transmissions between a first panel and a second panel. Based on the interval, a determination is made of: a first portion of the number of repetition transmission occasions for uplink transmission of the transport block; and a second portion of the number of repetition transmission occasions for uplink transmission of the transport block. The first portion of the number of repetition transmission occasions of the transport block is transmitted via the first panel. The second portion of the number of repetition transmission occasions of the transport block is transmitted via the second panel. 1. A method comprising: a number of repetition transmission occasions for uplink transmission of a transport block; and', 'an interval for switching uplink transmissions between a first panel and a second panel;, 'receiving, by a wireless device from a base station, one or more messages indicating a first portion of the number of repetition transmission occasions for uplink transmission of the transport block; and', 'a second portion of the number of repetition transmission occasions for uplink transmission of the transport block;, 'based on the interval, determiningtransmitting, via the first panel, the first portion of the number of repetition transmission occasions of the transport block; andtransmitting, via the second panel, the second portion of the number of repetition transmission occasions of the transport block.2. The method of claim 1 , further comprising switching an uplink precoder for the uplink transmission via the first panel based on the interval for switching uplink transmissions.3. The method of claim 2 , further comprising switching the uplink precoder for the uplink transmission via the second panel based on the interval for switching uplink ...

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Номер записи: 54
07-01-2021 дата публикации

METHOD AND APPARATUS FOR TRANSMITTING UPLINK INFORMATION

Номер: US20210007139A1
Автор: FU Jingxing, QIAN CHEN, Xiong Qi, Yu Bin
Принадлежит:

The present disclosure provides a method for transmitting uplink information, including: determining a frequency band for carrier sensing and an allocation manner of uplink frequency domain resources by receiving a signaling or by predefining via a protocol; performing carrier sensing at the determined frequency band for carrier sensing; and transmitting uplink information in uplink frequency domain resources determined according to the allocation manner of uplink frequency domain resources when a carrier is idle. The present disclosure also provides a user equipment for transmitting uplink information. 115-. (canceled)16. A method performed by a user equipment (UE) in a wireless communication system , the method comprising:receiving uplink frequency resource allocation information comprising interlace allocation information and resource block (RB) set allocation information from a base station (BS);determining a frequency resource for carrier sensing based on the interlace allocation information and the RB set allocation information;performing carrier sensing on the frequency resource; andtransmitting uplink data based on a result of the carrier sensing to the BS,wherein the UE is configured with an interlaced allocation manner as an allocation manner of uplink frequency resources.17. The method of claim 16 , wherein the interlace allocation information comprises information bits indicting at least one interlace among a plurality of interlaces.18. The method of claim 16 , wherein the RB set allocation information comprises information of a bandwidth of a frequency band for carrier sensing and information of a position of the frequency band.19. The method of claim 16 , wherein the determining of the frequency resource for carrier sensing comprises:determining an intersection of RBs of interlace indicated by the interlace allocation information and RB sets indicated by the RB set allocation information as the frequency resource for carrier sensing.20. The method of ...

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Номер записи: 55
07-01-2021 дата публикации

TRANSMISSION APPARATUS AND RECEPTION APPARATUS

Номер: US20210007140A1
Автор: Harada Hiroki, Murayama Daisuke, Nagata Satoshi, Takeda Kazuaki
Принадлежит: NTT DOCOMO, INC.

A transmitting apparatus that transmits data in a first frequency band is provided with a transmitting section that transmits a transmission request signal of the data in the first frequency band, a receiving section that receives a response signal to the transmission request signal in a second frequency band, and a control section that controls transmission of the data based on the response signal. 1. A transmitting apparatus that transmits data in a first frequency band , comprising:a transmitting section that transmits a transmission request signal of the data in the first frequency band;a receiving section that receives a response signal to the transmission request signal in a second frequency band; anda control section that controls transmission of the data based on the response signal.2. The transmitting apparatus according to claim 1 , wherein the transmitting section transmits the transmission request signal in a frequency band used in transmission of the data.3. The transmitting apparatus according to claim 1 , wherein the transmission request signal is a single transmission request signal claim 1 , or a plurality of transmission request signals subjected to frequency multiplexing claim 1 , andthe control section transmits the data, in a frequency band for transmitting the single transmission request signal, or in at least a part of a total frequency band for transmitting the plurality of transmission request signals.4. The transmitting apparatus according to claim 1 , wherein the response signal includes a number for identifying the transmission request signal claim 1 , or a number of a channel beforehand associated with the transmission request signal.5. The transmitting apparatus according to claim 1 , wherein based on a detection frequency of a busy state in listening by the transmitting apparatus or a receiving apparatus of the data claim 1 , the control section controls whether or not to transmit the transmission request signal.6. A receiving ...

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Номер записи: 56
07-01-2021 дата публикации

METHOD AND DEVICE FOR TRANSMITTING INFORMATION

Номер: US20210007141A1
Автор: Chen Wenhong
Принадлежит:

Embodiments of the present application provide a method and device for transmitting information. The method includes: performing, by a first device, channel detection on a first channel on an unlicensed carrier using a first beam and a first energy detection threshold to determine whether a first time domain resource used for the first device to send first information is available; and in a case where the first time domain resource is available, sending, by the first device, the first information by the first time domain resource. 1. An information transmission method , comprising:performing, by a first device, channel detection on a first channel on an unlicensed carrier using a first beam and a first energy detection threshold to determine whether a first time domain resource used for the first device to send first information is available; andin a case where the first time domain resource is available, sending, by the first device, the first information by the first time domain resource.2. The method according to claim 1 , wherein the first energy detection threshold is determined according to a first transmit power;wherein sending, by the first device, the first information by the first time domain resource, comprises:sending, by the first device, the first information by the first time domain resource with a second transmit power, wherein the second transmit power is different from the first transmit power.3. The method according to claim 1 , wherein sending claim 1 , by the first device claim 1 , the first information by the first time domain resource claim 1 , comprises:sending, by the first device, the first information by the first time domain resource using a second beam, wherein the second beam is different from the first beam, and a direction corresponding to the second beam and a direction corresponding to the first beam at least partially overlap.4. The method according to claim 3 , wherein the first beam is a beam in a first beam set claim 3 , and the ...

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Номер записи: 57
07-01-2021 дата публикации

METHOD OF RANDOM ACCESS PROCEDURE FOR SUPPORTING LARGE RANDOM ACCESS RESOINSE (RAR) WINDOW SIZE

Номер: US20210007146A1
Автор: Agiwal Anil, JANG Jaehyuk, KIM Soenghun
Принадлежит:

A communication method and system for converging a 5generation (5G) communication system for supporting higher data rates beyond a 4th generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method performed by a terminal for handling listen before talk (LBT) failure in a wireless communication system is provided. The method comprises identifying consistent LBT failure for active uplink (UL) bandwidth part (BWP) in a serving cell, identifying at least one UL BWP for which consistent LBT failure has not been triggered on same carrier in the serving cell, wherein the at least one UL BWP is configured with physical random access channel (PRACH) occasion, and switching the active UL BWP to an UL BWP among the at least one UL BWP. 1. A method performed by a terminal for handling listen before talk (LBT) failure in a wireless communication system , comprising:identifying consistent LBT failure for active uplink (UL) bandwidth part (BWP) in a serving cell;identifying at least one UL BWP for which consistent LBT failure has not been triggered on same carrier in the serving cell, wherein the at least one UL BWP is configured with physical random access channel (PRACH) occasion; andswitching the active UL BWP to an UL BWP among the at least one UL BWP.2. The method of claim 1 , further comprising:initiating a random access procedure triggered by the consistent UL LBT failure on the switched UL BWP.3. The method of claim 1 , further comprising:in case that consistent LBT failure has been triggered in all UL BWPs configured with PRACH occasions on same carrier in the serving cell, determining that radio link failure is detected for the serving cell.4. The ...

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Номер записи: 58
07-01-2021 дата публикации

METHOD FOR TRANSMITTING AND RECEIVING SIGNAL IN WIRELESS COMMUNICATION SYSTEM SUPPORTING UNLICENSED BAND, AND APPARATUS SUPPORTING SAME

Номер: US20210007147A1
Автор: KIM Seonwook, Park Changhwan, Yang Suckchel
Принадлежит:

The present disclosure relates to a wireless communication system. More specifically, the present disclosure relates to: a method for transmitting a physical random access channel (PRACH) in at least one carrier from among a first carrier group on the basis of a channel sensing result, receiving a random access response (RAR) in at least one carrier from among a second carrier group in response to the transmission of the PRACH, and transmitting a physical uplink shared channel (PUSCH) on the basis of the RAR; and an apparatus therefor. 114-. (canceled)15. A communication method performed by a device in a wireless communication system , the method comprising:transmitting a physical random access channel (PRACH) on a first subband in a first BWP (bandwidth part) based on results of channel sensing;receiving a random access response (RAR) in response to the PRACH transmission; andtransmitting a physical uplink shared channel (PUSCH) based on the RAR,wherein the PUSCH is transmitted on the first subband through which the PRACH is transmitted.16. The method of claim 15 , wherein the first BWP includes a plurality of subbands claim 15 , andwherein the channel sensing is performed in each of the plurality of subbands.17. The method of claim 15 , wherein the first BWP is one of a set of BWPs claim 15 , andwherein the first BWP is configured by a synchronization signal block (SSB) or a physical downlink control channel (PDCCH).18. The method of claim 15 , wherein claim 15 , after detection of a synchronization signal block (SSB) for a plurality of subbands from the first BWP claim 15 , the channel sensing is performed on a subband with a highest reference signal received power (RSRP) for the SSB or a BWP including the subband with the highest RSRP for the SSB.19. The method of claim 15 , wherein the channel sensing is performed on at least one or more subbands randomly selected from the first BWP.20. The method of claim 15 , wherein the first subband for the PRACH ...

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Номер записи: 59
07-01-2021 дата публикации

COMMUNICATION METHOD USED FOR RANDOM ACCESS, TERMINAL, AND BASE STATION

Номер: US20210007151A1
Автор: Guo Yi, HUANG Qufang, YOU Chunhua
Принадлежит:

Embodiments of the present invention provide a communication method used for random access, including: receiving, by a terminal, random access preamble information sent by a base station; and before sending random access to the base station based on the random access preamble information, receiving, by the terminal, a random access response sent by the base station, where the random access response includes an uplink asynchronous hybrid automatic repeat request HARQ process identifier, and the uplink asynchronous HARQ process identifier is used by the terminal to send uplink data to the base station. Compared with the prior art, the communication method provided in the embodiments of the present invention can ensure to some extent that uplink data is transmitted timely and can effectively improve uplink data transmission reliability. 1. A method , performing by a terminal , and the method comprising:instructing, by a media access control (MAC) layer, a physical layer to transmit a random access preamble;receiving, by the MAC layer from the physical layer, an indication that indicates a transmission failure of the random access preamble; andomitting, by the MAC layer based on the indication, a random access response.2. The method according to claim 1 , wherein the omitting the random access response claim 1 , comprises:skipping receiving the random access response.3. The method according to claim 1 , wherein the omitting the random access response claim 1 , comprises:skipping starting a timer of a random access response window.4. The method according to claim 1 , wherein the omitting the random access response claim 1 , comprises:skipping monitoring a physical downlink control channel (PDCCH) by using a random access radio network temporary identity (RA-RNTI).5. The method according to claim 4 , the omitting the random access response claim 4 , comprises:skipping monitoring the physical downlink control channel (PDCCH) of a primary and secondary cell (SpCell) by ...

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Номер записи: 60
04-01-2018 дата публикации

TECHNIQUES FOR TRANSMITTING AND RECEIVING PAGING MESSAGES OVER AN UNLICENSED RADIO FREQUENCY SPECTRUM BAND

Номер: US20180007657A1
Автор: Damnjanovic Aleksandar, Malladi Durga Prasad, Vajapeyam Madhavan Srinivasan, Wei Yongbin
Принадлежит:

Techniques are described for wireless communication. A first method includes receiving a transmission including a paging group indicator and an indication of a time window. The transmission may be received at a user equipment (UE) over an unlicensed radio frequency spectrum band. The first method may also include monitoring, based on the paging group indicator, the unlicensed radio frequency spectrum band during the time window to receive an asynchronous paging message from a base station. A second method includes transmitting the transmission over the unlicensed radio frequency spectrum band; performing a number of clear channel assessments (CCAs) on the unlicensed radio frequency spectrum band during the time window; and transmitting the paging message over the unlicensed radio frequency spectrum band at a transmission time during the time window. The transmission time may be based on a result of at least one of the CCAs. 1. A method for wireless communication , comprising:transmitting, over an unlicensed radio frequency spectrum band, a clear channel assessment (CCA)-exempt transmission (CET) comprising a paging group indicator and an indication of a time window;performing a number of clear channel assessments (CCAs) on the unlicensed radio frequency spectrum band during the time window; andtransmitting a paging message associated with the paging group indicator over the unlicensed radio frequency spectrum band at a transmission time during the time window, wherein the transmission time is based on a result of at least one of the number of CCAs.2. The method of claim 1 , wherein performing the number of CCAs on the unlicensed radio frequency spectrum band during the time window comprises:identifying a first successful one of the number of CCAs during the time window;wherein the transmission time follows the first successful one of the number of CCAs during the time window.3. The method of claim 1 , wherein performing the number of CCAs on the unlicensed radio ...

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Номер записи: 61
04-01-2018 дата публикации

Device and Method of Handling Channel Access in Unlicensed Band

Номер: US20180007716A1
Автор: Chih-Hsiang Wu
Принадлежит: HTC Corp

A communication device for handling channel access in an unlicensed band comprises a storage device for storing instructions and a processing circuit coupled to the storage device. The processing circuit is configured to execute the instructions stored in the storage device. The instructions comprise receiving an uplink (UL) grant from a network, wherein the UL grant indicates the communication device to perform an UL transmission in a transmission time interval (TTI); performing a listen-before-talk (LBT) procedure on a first carrier in response to the UL grant; and aborting the LBT procedure, when the communication device senses the first carrier to be busy before the TTI according to the LBT procedure.

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Номер записи: 62
03-01-2019 дата публикации

WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, AND COMMUNICATION METHOD

Номер: US20190007969A1
Автор: Shako Hideharu
Принадлежит: FUJITSU LIMITED

A wireless communication system includes a server and a plurality of wireless communication devices representing nodes assigned to the server. The server sends notification information in which the starting position of a frame is specified. Each wireless communication device includes a notification information processing unit that receives notification information; and includes a communication processing unit that performs communication of the Time Division Duplex (TDD) type, and performs communication of the Carrier Sense Multiple Access (CSMA) type during the periods of time between downlink time period and uplink time period of the TDD type. 1. A wireless communication system comprising:a server that sends notification information in which starting position of a frame is specified; anda plurality of wireless communication devices representing nodes assigned to the server, wherein a notification information processing unit that receives the notification information, and', 'a communication processing unit that, according to the notification information, performs communication of time division duplex (TDD) type, and performs communication of carrier sense multiple access (CSMA) type during a period of time between a downlink time period and an uplink time period of the TDD type., 'each of the plurality of wireless communication devices includes'}2. The wireless communication system according to claim 1 , whereinthe notification information is assigned to a first slot among a plurality of slots assigned to a single frame, andin a plurality of paths in which the notification information is transferred, the notification information processing unit of the plurality of wireless communication devices assigns the notification information to a slot, among the plurality of slots, that is present at position corresponding to a node hop count indicating number of nodes which the notification information has passed through.3. The wireless communication system according to claim ...

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Номер записи: 63
03-01-2019 дата публикации

METHOD OF SENDING A MESSAGE AFTER LISTENING TO A COMMUNICATION CHANNEL SHARED BY TERMINALS

Номер: US20190007970A1
Автор: BERTAUX LIONEL, JELOYAN CHRISTOPHE
Принадлежит:

A method of transmitting, by a terminal of a wireless communication system, a message on a communication channel shared with other terminals. Before sending the message, the terminal listens on the communication channel until the terminal detects an absence of activity on the communication channel for an inactivity time ΔTin. When no activity is detected on the communication channel for the inactivity time ΔTin, the terminal waits for a waiting time ΔTat and then transmits the message on the communication channel. The waiting time ΔTat is identical for all of the terminals of the wireless communication system 111-. (canceled)12. A method of transmitting , by a terminal of a wireless communication system , a message on a communication channel shared with other terminals , the method comprising steps of:before sending the message, listening without interruption to the communication channel by the terminal until the terminal detects an absence of activity on the communication channel for an inactivity time ΔTin;wherein a plurality of terminals is multiplexed at least in one of frequency and by different spreading codes on the communication channel;waiting for a waiting time ΔTat before transmitting the message on the communication channel by the terminal in response to a detection of an absence of activity on the communication channel for the inactivity time ΔTin, the waiting time ΔTat being identical for all of said plurality of terminals of the wireless communication system.13. The method according to claim 12 , further comprising a step of interrupting the listening of the communication by the terminal in response to a detection of no absence of activity of a duration equal to the inactivity time ΔTin for a maximum listening time ΔTmax claim 12 , the maximum listening time ΔTmax being greater than the inactivity time ΔTin.14. The method according to claim 13 , wherein the maximum listening time ΔTmax is greater than a maximum duration of messages sent by said ...

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Номер записи: 64
03-01-2019 дата публикации

Listen-before-talk parameter processing method, and contention window adjustment method and device

Номер: US20190007972A1
Автор: Feng Bi, Ling Yang, Wei Gou, Xincai LI, Yajun Zhao
Принадлежит: ZTE Corp

The embodiments of the present disclosure provide a method for processing an LBT parameter, a method for adjusting a contention window and associated apparatuses. The method for processing an LBT parameter includes: generating, by a first station, an LBT parameter comprising a parameter used by the first station to perform LBT for unlicensed carriers and/or indicating a parameter used by a second station receiving the LBT parameter to perform LBT for the unlicensed carriers; and transmitting, by the first station, the LBT parameter. With the embodiments of the present disclosure, the problem associated with interference due to unlicensed carrier contention by neighboring stations can be solved, such that the interference between the neighboring stations due to unlicensed carrier contention by the neighboring stations can be avoided.

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Номер записи: 65
02-01-2020 дата публикации

WIRELESS SIGNAL TRANSMISSION AND RECEPTION METHOD AND DEVICE IN WIRELESS COMMUNICATION SYSTEM INVOLVING A CELL GROUP INCLUDING UNLICENSED BAND CELLS

Номер: US20200008074A1
Автор: Ahn Joonkui, Yang Suckchel
Принадлежит: LG ELECTRONICS INC.

The present invention relates to a wireless communication system and, particularly, to a method and a device therefor, the method comprising the steps of: configuring a cell group including multiple Ucells; identifying subframe configuration information on a particular cell within the cell group; and configuring subframe transmission directions of cells within the cell group so as to be the same at the same time point, on the basis of the subframe configuration information on the particular cell, wherein the particular cell is one Ucell among the multiple Ucells within the cell group when the cell group includes only Ucells, and the particular cell is an Lcell when the cell group includes the Lcell. 1. A method performed by a device in a wireless communication system , the method comprising:monitoring a known signal in an n-th time interval;performing a carrier sensing in the n-th time interval; andcontrolling a signal transmission in an (n+1)-th time interval based on a result of the carrier sensing in the n-th time interval,wherein, based on the known signal being detected in the n-th time interval, the carrier sensing is performed with regard to a signal that remains after the known signal is removed from a received signal in the n-th time interval,wherein, based on the known signal not being detected in the n-th time interval, the carrier sensing is performed with regard to the received signal in the n-th time interval, andwherein n is an integer, and each time interval includes a plurality of contiguous orthogonal frequency division multiplexing (OFDM)-based symbols.2. The method of claim 1 , wherein the known signal includes a signal used for the wireless communication system.3. The method of claim 2 , wherein the wireless communication system is a 3rd generation partnership project (3GPP) wireless communication system.4. The method of claim 2 , wherein the known signal includes at least a reference signal (RS) claim 2 , a synchronization signal (SS) or a ...

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Номер записи: 66
02-01-2020 дата публикации

TRANSMISSION OPPORTUNITY (TXOP) STRUCTURE FOR NEW RADIO-UNLICENSED (NR-U) AND NEW RADIO-SYNCHRONIZED SHARING (NR-SS)

Номер: US20200008107A1
Автор: Bhattad Kapil, CHENDAMARAI KANNAN Arumugam, Kadous Tamer, Sun Jing, YERRAMALLI Srinivas, Yoo Taesang, Zhang Xiaoxia
Принадлежит:

Wireless communications systems and methods related to communicating in a shared communication medium with flexible scheduling are provided. A first wireless communication device communicates, with a second wireless communication device during a reservation period, a channel reservation request for a first transmission opportunity (TXOP) in a spectrum. The first wireless communication device communicates, with the second wireless communication device during a response period in response to the channel reservation request, a channel reservation response. The first wireless communication device communicates, with a third wireless communication device during a first time period between the reservation period and the response period, a first communication signal. 1. A method of wireless communication , comprising:communicating, by a first wireless communication device with a second wireless communication device during a reservation period, a channel reservation request for a first transmission opportunity (TXOP) in a spectrum;communicating, by the first wireless communication device with the second wireless communication device during a response period in response to the channel reservation request, a channel reservation response; andcommunicating, by the first wireless communication device with a third wireless communication device during a first time period between the reservation period and the response period, a first communication signal.2. The method of claim 1 , wherein the reservation period claim 1 , the first time period claim 1 , and the response period are within the first TXOP claim 1 , and wherein the method further comprises:communicating, by the first wireless communication device with a fourth wireless communication device during a second time period after the response period, a second communication signal based on a schedule determined independent of the channel reservation response.3. The method of claim 2 , further comprising:performing, by the first ...

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Номер записи: 67
02-01-2020 дата публикации

INITIAL NETWORK ACCESS FOR DOWNLINK UNLICENSED DEPLOYMENT

Номер: US20200008131A1
Автор: Chakraborty Kaushik, Kadous Tamer, Sun Jing, Zhang Xiaoxia
Принадлежит:

Wireless communications systems and methods related to initial network access in a network deployed over a downlink unlicensed band paired with one or more UL bands are provided. A first wireless communication device communicates, with a second wireless communication device in a downlink unlicensed band, a first broadcast communication signal during a discovery time period configured based on a network discovery configuration. The first broadcast communication signal includes a configuration for requesting a second broadcast communication signal when there is no second broadcast communication signal detected within the discovery time period. The first wireless communication device communicates, with the second wireless communication device, a request for the second broadcast communication signal based on the configuration. The first wireless communication device communicates, with the second wireless communication device in the downlink unlicensed band, the second broadcast communication signal outside of the discovery time period in response to the request. 1. A method of wireless communication , comprising:communicating, by a first wireless communication device with a second wireless communication device in a downlink unlicensed band, a first broadcast communication signal during a discovery time period configured based on a network discovery configuration, the first broadcast communication signal includes a configuration for requesting a second broadcast communication signal when there is no second broadcast communication signal detected within the discovery time period;communicating, by the first wireless communication device with the second wireless communication device, a request for the second broadcast communication signal based on the configuration; andcommunicating, by the first wireless communication device with the second wireless communication device in the downlink unlicensed band, the second broadcast communication signal outside of the discovery time ...

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Номер записи: 68
20-01-2022 дата публикации

METHOD AND APPARATUS FOR OPERATION MODE ON UNLICENSED SPECTRUM

Номер: US20220022048A1
Автор: Si Hongbo
Принадлежит:

Methods and apparatuses for operation modes on unlicensed spectrum in a wireless communication system including a carrier operating with shared spectrum channel access. A method of operating a UE includes receiving a set of higher layer parameters from a BS over the carrier and determining, from the set of higher layer parameters, a first operation mode for the BS. The method further includes determining, from the set of higher layer parameters, a second operation mode for the UE and transmitting to the BS based on the second operation mode. The first operation mode and the second operation mode include information on whether channel sensing is required before transmission on the carrier operating with shared spectrum channel access. 1. A base station (BS) in a wireless communication system including a carrier operating with shared spectrum channel access , the BS comprising: determine a first operation mode for the BS and a second operation mode for a user equipment (UE) served by the BS, wherein the first operation mode and the second operation mode include information on whether channel sensing is required before transmission on the carrier operating with shared spectrum channel access; and', 'indicate the first operation mode and the second operation mode in a set of higher layer parameters; and, 'a processor configured to transmit to the UE over the carrier based on the first operation mode; and', 'receive from the UE over the carrier based on the second operation mode., 'a transceiver operably connected to the transceiver, the transceiver configured to2. The BS of claim 1 , wherein the first operation mode and second operation mode are indicated in cell-specific fields in the set of higher layer parameters.3. The BS of claim 2 , wherein:the second operation mode is further indicated in a UE-specific field in the set of higher layer parameters, anda value in the UE-specific field overrides a value in the cell-specific field, if the second operation mode is ...

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Номер записи: 69
02-01-2020 дата публикации

EFFICIENT RACH BEHAVIOR

Номер: US20200008240A1
Автор: Basu Mallick Prateek, Golitschek Edler von Elbwart Alexander Johann Maria, Jung Hyejung, LOEHR Joachim, Nangia Vijay
Принадлежит:

Apparatuses, methods, and systems are disclosed for efficient RACH behavior. One apparatus includes a transmitter that transmits a first PRACH preamble to a base unit to start a RACH procedure; a receiver that receives a RAR (Msg2) from the base unit during a random access response window; and a processor that controls the transmitter to transmit a second PRACH preamble in response to being unable to transmit a RACH Msg3 within an indicated transmission opportunity. The processor may obtain multiple transmission opportunities for transmitting a RACH message such as RACH Msg1 or RACH Msg3 or monitor for multiple RACH Msg2 where transmission opportunity data are conveyed via a RACH Order, an RAR, or DCI for the RACH message. A method or system may perform functions of the apparatus. 1. An apparatus comprising:a transmitter that transmits a first physical random-access channel (“PRACH”) preamble to a base unit to start a RACH procedure;a receiver that receives a random access response from the base unit within a random access response window; anda processor that controls the transmitter to transmit a second PRACH preamble in response to being unable to transmit a RACH Msg3 within an indicated RACH Msg3 transmission opportunity.2. The apparatus of claim 1 , wherein the RACH Msg3 comprises a contention request.3. The apparatus of claim 1 , wherein the second PRACH preamble is selected from the same preamble group as the first PRACH preamble.4. The apparatus of claim 1 , wherein the processor considers a contention resolution timer to be expired in response to being unable to transmit the RACH Msg3 within the indicated RACH Msg3 transmission opportunity.5. The apparatus of claim 4 , wherein being unable to transmit the RACH Msg3 within the indicated RACH Msg3 transmission opportunity comprises failing to successfully perform a clear channel assessment for the RACH Msg3.6. The apparatus of claim 1 , wherein the processor considers the RACH procedure as continuing in ...

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Номер записи: 70
20-01-2022 дата публикации

DEVICES, SYSTEMS AND METHODS FOR LOW LATENCY DATA TRANSMISSION IN WIRELESS NETWORK

Номер: US20220022203A1
Автор: Gundu Rao Rajendra Kumar, MEDAPALLI Kamesh
Принадлежит: CYPRESS SEMICONDUCTOR CORPORATION

Embodiments can include a method in which a transmission duration for data frames to a plurality of different receiving devices is determined by a transmitting device. The transmission duration can include at least interframe spacings that separate the data frames from one another. The transmitting device can transmit a control message over a medium to reserve the medium for the transmission duration. The data frames can then be sequentially transmitted by the transmitting device to the plurality of receiving devices during the transmission duration. The transmitting device can operate according to a contention based protocol. Related devices and systems are also disclosed. 120- (canceled)21. A method , comprising:by operation of a transmitting device, determining a transmission duration for transmission of data frames to a plurality of different receiving devices, the transmission duration including interframe spacings that separate the data frames from one another;by operation of the transmitting device, transmitting a beacon packet for reception by all receiving devices that enables control of the medium by the transmitting device, the beacon packet including medium access parameters for the receiving devices for the transmission duration;by operation of the transmitting device, transmitting the data frames over the same medium to each of the plurality of receiving devices, individually and sequentially in time, during the transmission duration without another transmission to reserve the medium for any of the receiving devices; whereinthe data frames transmitted during the transmission duration comprise bursts of multiple, sequential data frames, each burst being addressed to a different receiving device.22. The method of claim 21 , further including:determining an upload time for receiving upload data from at least one receiving device;including the upload time in the transmission duration; andreceiving upload data from the at least one receiving device after ...

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Номер записи: 71
27-01-2022 дата публикации

WIRELESS COMMUNICATION SYSTEM WITH DISCRIMINATION BETWEEN EXTRANEOUS RECEIVED SIGNALS

Номер: US20220030437A1
Автор: EDWARDS Fraser Murray, GREEN Adam Nikolai
Принадлежит: Ocado Innovation Limited

A wireless communication system having base stations and remotely located terminal units. The base stations and the remotely located terminal units communicate data over operational wireless communication links assigned to respective sub-channels having tiles separated by frequency and time. Detectors for analyzing extraneous received signals in unassigned tiles of the communication links discriminate between a first type of extraneous signals detected in unassigned tiles of one sub-frame and also detected in other unassigned tiles, and a second type of extraneous signals detected in the unassigned tiles but not detected in other unassigned tiles. The reaction of the base stations is different based on the type of extraneous signals. 1. A wireless communication system comprising:at least one base station;a plurality of remotely located terminal units;communication modules for transmitting and receiving data over operational wireless communication links between at least the base station and the terminal units, the communication links being assigned to respective sub-channels having tiles separated by frequency and time; wherein the base station and/or at least one terminal unit includes at least one detector for analysing signals from the communication modules for detecting extraneous received signals;the detector being configured to analyse signals from the communication modules in unassigned tiles of the communication links;the detector being configured to discriminate between a first type of extraneous signals detected in an unassigned tile or group of unassigned tiles of one sub-frame and also detected in other unassigned tiles or groups of unassigned tiles, and a second type of extraneous signals detected in the unassigned tile or group of unassigned tiles of one sub-frame but not detected in other unassigned tiles or groups of unassigned tiles; andthe base station (LBT, DAA, Adaptvity) being configured to react to detection of the first type of extraneous ...

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Номер записи: 72
27-01-2022 дата публикации

CHANNEL ACCESS REQUEST IN A DOWNLINK TRANSMISSION

Номер: US20220030622A1
Автор: Si Hongbo
Принадлежит:

Apparatuses and methods for channel access requests in downlink transmissions. A method of operating a user equipment (UE) includes receiving, from a base station (BS), a downlink control information (DCI) format in physical downlink control channels (PDCCHs), determining a number of beam directions to sense, and determining a number of channel access request (CARQs) in a burst. The method further includes determining, based on at least one field in the DCI format, a set of CARQs according to the number of CARQs in the burst and a set of beam directions according to the number of beam directions to sense. 1. A base station (BS) in a wireless communication system including a carrier operating with shared spectrum channel access , the BS comprising: determine a number of beam directions to sense;', 'determine a number of channel access requests (CARQs) in a burst; and', a set of CARQs according to the number of CARQs in the burst; and', 'a set of beam directions according to the number of beam directions to sense; and, 'determine at least one field in a downlink control information (DCI) format, wherein the at least one field indicates], 'a processor configured toa transceiver operably connected to the processor, the transceiver configured to transmit, to a user equipment (UE), the DCI format including the at least one field in physical downlink control channels (PDCCHs).2. The BS of claim 1 , wherein:the transceiver is further configured to transmit a set of higher layer parameters indicating the number of beam directions to sense and the number of CARQs in the burst,the number of beam directions to sense is equal to the number of CARQs in the burst, andthe number of CARQs in the burst corresponds to the number of beam directions to sense, respectively.3. The BS of claim 1 , wherein the processor is further configured to:perform a channel access procedure before transmission of the DCI format in the PDCCHs over the carrier operating with the shared spectrum channel ...

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Номер записи: 73
12-01-2017 дата публикации

Listen-Before-Talk for Multi-Carrier Operation in Unlicensed Spectrum

Номер: US20170013469A1
Автор: Cheng Jung-Fu, Falahati Sorour, KOORAPATY Havish, Larsson Daniel, Mukherjee Amitav, Yang Yu
Принадлежит: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

A first communication device () and respective methods performed for operating on least two carriers that are accessed by an LBT procedure. The methods performed by the first communication device () comprises e.g. performing (S) synchronized LBT procedures, on the at least two carriers and accessing (S) the carriers based on the result of the synchronized LBT procedures. 111-. (canceled)12. A method for operating a first communication device in a wireless communication system , the first communication device being configured to operate on at least two carriers that are accessed by a Listen-Before-Talk (LBT) procedure , the method comprising:performing synchronized LBT procedures on the at least two carriers; andaccessing the at least two carriers based on a result of the synchronized LBT procedures.13. The method according to claim 12 , wherein the LBT procedures are synchronized by using at least one of the same or equal starting times and the same or equal back-off values.14. The method according to claim 13 , wherein the at least one of the same or equal starting times and the same or equal back-off values are provided by a second communication device.15. A method for operating a first communication device in a wireless communication system claim 13 , the first communication device being configured to operate on at least two carriers that are accessed by a Listen-Before-Talk (LBT) procedure claim 13 , the method comprising:performing a first LBT procedure on one of the at least two carriers;performing a quick Clear Channel Assessment (CCA) on the rest of the at least two carriers based on a result of the first LBT procedure; andaccessing the at least two carriers based on a result of the quick CCA and the result of the first LBT procedure.16. A method according to claim 15 , wherein the one of the at least two carriers for which to perform the first LBT procedure is determined based on one or more of:randomly selecting one of the at least two carriers;channel ...

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Номер записи: 74
12-01-2017 дата публикации

SYSTEM, APPARATUS AND METHOD FOR ROBUST TRANSMISSION OF VISUAL DATA THROUGH VISUAL SENSOR NETWORK

Номер: US20170013533A1
Автор: Basalamah Saleh Muhammed, Felemban Emad Abdulrazzak, SHEIKH ADIL AMJAD ASHRAF
Принадлежит:

The present invention is related to a method for routing image data from Camera Node to a Sink Node, where it May be processed in detail, in a Visual sensor network. In accordance with the present invention, wireless Intermediate Node are configured to route images based on first pass image encoding containing coarse image to the next wireless hop at a higher priority over the images based on the second pass encoding containing additional details of the images. The routing method for wireless Ad Hoc mobile and sensor network, periodically exchanges node status information to optimize the routing table, so that high priority image packets may reach the Sink Node in shortest possible path. The method ensures selection of high quality image packets for routing under the condition of collision and congestion to achieve optimal image quality receipt at the Sink Node. 1. An apparatus , comprising:a visual sensor network with a hardware and a software;a Camera Node to capture, prioritize, layer, package and transmit an image;an Intermediate Node to receive the captured image, prioritize the queue, calculate next hop and transmit the image; anda Sink Node to receive a processed, prioritized, captured and queue an image as a priority package.2. The apparatus of claim 1 , wherein the visual sensor network is at least one of a wireless Ad Hoc network claim 1 , mobile and wireless sensor network.3. The apparatus of claim 1 , wherein the software comprises of a media access layer.4. The apparatus of claim 3 , wherein the media access layer performs a new differentiated back-off window method that handles packet transmission in media access layer during collision based on priorities unlike CSMA/CD protocol that handles based on random time slot selection.5. The apparatus of claim 1 , wherein the priority package is at least one of a high priority and low priority.6. A method of using a visual sensor network claim 1 , comprising:procuring an image using a Camera Node as a captured ...

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Номер записи: 75
10-01-2019 дата публикации

METHOD AND SYSTEM FOR FLEXIBLE SOUNDING REFERENCE SIGNAL (SRS) TRANSMISSION IN A WIRELESS COMMUNICATION NETWORK

Номер: US20190013909A1
Автор: LI Gen, Li Shaohua, WANG JIANFENG
Принадлежит:

Embodiments of the invention include methods of providing flexible sounding reference signal (SRS) transmission in a wireless communication network. In one embodiment, a method is implemented in a network device for configuring sounding reference signal (SRS) transmission from a terminal device to the network device, the method comprises: transmitting, by a network device to a terminal device, an indication of a plurality of alternative SRS transmission selections; and detecting, by the network device from a signal of the terminal device, a SRS transmission based on the plurality of alternative SRS transmission selections. 18-. (canceled)9. A method implemented in a terminal device for sounding reference signal (SRS) transmission from the terminal device to a network device , comprising:receiving, by the terminal device from the network device, an indication of a plurality of alternative SRS transmission selections; andtransmitting, by the terminal device to the network device, a SRS through one or more antenna ports of the terminal device based on the plurality of alternative SRS selections and a determination of success in a contention-based protocol in a time unit, wherein the SRS is transmitted using one of the plurality of alternative SRS selections.10. The method of claim 9 , wherein the determination of success in the contention-based protocol is a determination of a successful listen-before-talk (LBT).11. The method of claim 9 , wherein a failed LBT in the time unit precedes the successful LBT in the time unit claim 9 , and the failed LBT corresponds to a first alternative SRS transmission selection claim 9 , and wherein the successful LBT corresponds to a second alternative SRS transmission selection immediately next to the first alternative SRS transmission selection.12. The method of claim 9 , wherein the terminal device contains a plurality of antenna ports claim 9 , and one of the plurality of alternative SRS transmission selections indicates that one ...

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Номер записи: 76
10-01-2019 дата публикации

METHODS FOR ENB, UE UPLINK TRANSMISSION AND RECEPTION

Номер: US20190013982A1
Автор: Sun Feifei, Zhuang Xiangyang
Принадлежит:

Methods for transmitting a waveform in the wireless communication networks are provided. A method for UE to transmit to an eNB an uplink channel carrying data or control information bits, comprising: receiving a downlink channel occupying a set of downlink resource elements, where each downlink resource element has a downlink subcarrier spacing in the frequency domain and a downlink symbol duration in the time domain; generating a SC-FDMA based uplink channel from the information bits, where the uplink channel occupies a set of uplink resource elements and each uplink resource element has a uplink subcarrier spacing in the frequency domain differing from the downlink subcarrier spacing, and a uplink symbol duration in the time domain differing from the downlink symbol duration; and transmitting the SC-FDMA based uplink channel. In one embodiment, the information bits are uplink data information bits. In another embodiment, the information bits are uplink control information bits. 1. A method , comprising:receiving a downlink channel by a user equipment (UE) from an eNB, wherein the downlink channel occupies a set of downlink resource elements, each downlink resource element is with a frequency domain downlink subcarrier spacing and a time domain downlink symbol duration;generating an uplink channel carrying uplink information bits, wherein the uplink channel occupies a set of uplink resource elements, each uplink resource element is with an uplink frequency domain subcarrier spacing different from the downlink subcarrier spacing and an uplink time domain symbol duration different from the downlink symbol duration; andtransmitting the uplink channel to the eNB.2. The method of claim 1 , wherein uplink information bits are uplink data information bits.3. The method of claim 1 , wherein uplink information bits are uplink control information bits.4. The method of claim 1 , wherein the uplink channel is a single carrier frequency division multiple access (SC-FDMA)-based ...

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Номер записи: 77
14-01-2016 дата публикации

Licensed Band Feedback for Unlicensed Band Communication

Номер: US20160014610A1
Автор: Hu Teck, Wong Shin Horng
Принадлежит:

A node for wireless communication to provide, over a licensed frequency band, an indication of whether at least one unlicensed frequency band is clear for wireless communication. A node for wireless communication to receive, over a licensed frequency band, an indication of whether at least one unlicensed frequency band is clear for wireless communication. 1. A method comprising:providing, from a node in a wireless communication system and over a licensed frequency band, an indication of whether at least one unlicensed frequency band is clear for wireless communication.2. The method of claim 1 , wherein providing the indication comprises providing the indication prior to data becoming available for transmission to the node over the at least one unlicensed frequency band.3. The method of claim 1 , further comprising:configuring the node to monitor the at least one unlicensed frequency band based on information received over the licensed frequency band.4. The method of claim 3 , wherein configuring the node to monitor the at least one unlicensed frequency band comprises configuring the node to periodically monitor the at least one unlicensed frequency band.5. The method of claim 4 , wherein configuring the node to periodically monitor the at least one unlicensed frequency band comprises configuring the node to monitor the at least one unlicensed frequency band with a periodicity determined based on power consumption at the node.6. The method of claim 3 , wherein the at least one unlicensed frequency band is at least one of a plurality of frequency bands claim 3 , and wherein configuring the node to monitor the at least one frequency band comprises configuring the node to monitor a subset of the plurality of frequency bands.7. The method of claim 6 , wherein configuring the node to monitor the at least one frequency band comprises configuring the node to monitor different subsets of the plurality of frequency bands in different time intervals.8. The method of claim 1 , ...

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Номер записи: 78
11-01-2018 дата публикации

Data Transmission Method and Apparatus

Номер: US20180014326A1
Автор: Da Wang, Jian Wang
Принадлежит: Huawei Technologies Co Ltd

A data transmission method and an apparatus relate to the communications field and are applied to data transmission to effectively reduce a collision reoccurrence probability after a device in a licensed-assisted access using Long Term Evolution (LAA-LTE) system preempts an unlicensed spectrum and collides with another device. A first device adjusts a detection moment or a quantity of detection times of clear channel assessment (CCA) of a channel in an unlicensed spectrum after the first device determines that the first device collides with another device when occupying the channel in the unlicensed spectrum to transmit data, and the first device occupies, according to an adjusted detection moment or an adjusted quantity of detection times of CCA of the channel in the unlicensed spectrum, the channel in the unlicensed spectrum to transmit data.

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Номер записи: 79
11-01-2018 дата публикации

Uplink ppdu transmission

Номер: US20180014327A1
Автор: Jong Hoon Park
Принадлежит: Neuromeka Co Ltd

Uplink transmission in a wireless local area network is provided. A station receives a trigger frame for requesting a transmission of an uplink physical layer protocol data unit (PPDU) from an access point (AP). The station determines a value of a second duration field of an uplink PPDU based on a first duration field of the trigger frame. The station transmits the uplink PPDU. The uplink PPDU does not include any frame that solicits a response frame from the AP when the value of the second duration field is set to zero.

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Номер записи: 80
14-01-2016 дата публикации

Medium or Channel Sensing-Based Scheduling

Номер: US20160014796A1
Автор: Filip MESTANOV, Johan SÖDER, Leif Wilhelmsson, Yu Wang
Принадлежит: Telefonaktiebolaget LM Ericsson AB

There is provided a method, performed by a network node associated with at least two wireless communication devices, for scheduling packet transmission over a radio-based medium. The method comprises sensing (S 1 ) the radio-based medium by estimating a received signal level, and evaluating (S 2 ), for each of the at least two wireless communication devices, whether the radio-based medium is accessible or free for transmission based on comparing the received signal level to a respective threshold associated with the considered wireless communication device. The method further comprises scheduling (S 3 ) packet transmission over the radio-based medium based on the evaluating, for each of the at least two wireless communication devices, whether the radio-based medium is accessible or free for transmission.

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Номер записи: 81
14-01-2016 дата публикации

METHOD AND DEVICE FOR TRANSMITTING/RECEIVING FRAME IN ACCORDANCE WITH BANDWIDTH THEREOF IN WLAN SYSTEM

Номер: US20160014813A1
Автор: Seok Yongho
Принадлежит: LG ELECTRONICS INC.

The present invention relates to a wireless communication system and, more specifically, provides a method and device for transmitting/receiving a frame in accordance with the bandwidth thereof in a WLAN system. The method whereby a station (STA) performs virtual carrier sensing (VCS) in a WLAN system according to one embodiment of the present invention may comprise the steps of: receiving a frame by the STA; determining by the STA, a VCS time length value on the basis of the response indication parameter and/or channel bandwidth type of the frame; and deferring channel access by the STA for the VCS time length value. 1. A method for performing Virtual Carrier Sensing (VCS) in a Wireless Local Area Network (WLAN) system , performed by a STAtion (STA) , the method comprising:receiving a frame by the STA;determining a VCS time length based on at least one of a response indication parameter and a channel bandwidth type of the frame by the STA; anddeferring channel access during the VCS time length by the STA.2. The method according to claim 1 , wherein the channel bandwidth type indicates a channel bandwidth type of a response frame transmitted in response to the frame.3. The method according to claim 1 , wherein the channel bandwidth type is one of a 1-MHz preamble channel bandwidth type and a 2-MHz or above preamble channel bandwidth type.4. The method according to claim 1 , wherein if the response indication parameter indicates a normal response frame claim 1 , the VCS time length is determined based on the sum of a transmission time of the normal response frame and a Short Inter-Frame Space (SIFS).5. The method according to claim 4 , wherein the transmission time of the normal response frame is determined according to the channel bandwidth type.6. The method according to claim 4 , wherein the transmission time of the normal response frame is determined separately for a 1-MHz preamble channel bandwidth type and a 2-MHz or above preamble channel bandwidth type.7. The ...

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Номер записи: 82
14-01-2016 дата публикации

USER EQUIPMENT COLLISION DETECTION METHOD, USER EQUIPMENT, AND BASE STATION

Номер: US20160014814A1
Автор: Chen Yanyan, LI Bingzhao, MA Xueli, Pang Lingli, Zheng Xiaoxiao
Принадлежит:

The present invention provides a user equipment collision detection method and apparatus. The user equipment collision detection method includes: sending, by user equipment, a collision detection request on a common E-DCH to a base station, where the collision detection request carries a first radio network temporary identifier (RNTI) corresponding to the user equipment, so that the base station determines whether the common E-DCH is occupied by other user equipment than the user equipment; receiving, by the user equipment, an acknowledgement message sent by the base station, where the acknowledgement message carries absolute grant (AG) information and a cyclic redundancy check (CRC) code; and determining, by the user equipment according to the first RNTI, and the AG information and the CRC code that are carried in the acknowledgement message, whether the common E-DCH is an available resource. 1. A user equipment collision detection method , comprising:sending, by user equipment, a collision detection request on a common enhanced uplink dedicated channel (E-DCH) to a base station, wherein the collision detection request carries a first radio network temporary identifier (RNTI) corresponding to the user equipment, so that the base station determines whether the common E-DCH is occupied by other user equipment than the user equipment;receiving, by the user equipment, an acknowledgement message sent by the base station, wherein the acknowledgement message carries absolute grant (AG) information and a cyclic redundancy check (CRC) code; anddetermining, by the user equipment according to the first RNTI, the AG information, and the CRC code, whether the common E-DCH is an available resource.2. The method according to claim 1 , wherein the first RNTI comprises a first definition portion and a second definition portion; andthe method further comprises:de-masking, by the user equipment, the CRC code by using the first definition portion; andif a CRC code is verified ...

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Номер записи: 83
14-01-2021 дата публикации

METHOD AND APPARATUS FOR HANDLING SCHEDULING REQUEST (SR) CANCELLATION, RANDOM ACCESS (RA) PRIORITIZATION AND CONCURRENT OCCURRENCE OF BEAM FAILURE RECOVERY (BFR) ON PRIMARY CELL (PCELL) AND SECONDARY CELL (SCELL)

Номер: US20210013949A1
Автор: Agiwal Anil, JANG Jaehyuk, KIM Soenghun
Принадлежит:

A communication method and system for converging a 5generation (5G) communication system for supporting higher data rates beyond a 4generation (4G) system with a technology for Internet of things (IoT) are provided. The communication method and system may be applied to intelligent services based on the 5G communication technology and the IoT- related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method performed by a terminal for handling scheduling request (SR) cancellation in a wireless communication system is provided. The method comprises identifying that at least one first SR is triggered, identifying whether each of the at least one first SR is triggered for beam failure recovery (BFR) of a secondary cell (SCell), and determining whether to cancel each of the at least one SR based on the identification. 1. A method performed by a terminal in a wireless communication system , the method comprising:identifying that at least one first scheduling request (SR) is triggered;identifying whether each of the at least one first SR is triggered for beam failure recovery (BFR) of a secondary cell (SCell); anddetermining whether to cancel each of the at least one first SR based on the identification.2. The method of claim 1 , further comprising:except for a second SR triggered for the BFR of the SCell, cancelling at least one third SR for buffer state report (BSR) triggered prior to media access control (MAC) protocol data unit (PDU) assembly among the at least one first SR when a MAC PDU including a BSR MAC control element (CE) is transmitted, the BSR MAC CE including buffer status up to a last event that triggered a BSR prior to the MAC PDU assembly.3. The method of claim 2 , further comprising:stopping each respective SR prohibit timer corresponding to the at least one third SR.4. The method of claim 1 , further comprising:except for a second SR ...

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Номер записи: 84
10-01-2019 дата публикации

Uplink transmission techniques in shared spectrum wireless communications

Номер: US20190014481A1
Автор: Aleksandar Damnjanovic, Andrei Dragos Radulescu, Srinivas YERRAMALLI, Tamer Kadous, Tao Luo
Принадлежит: Qualcomm Inc

Methods, systems, and devices for wireless communication are described. The described techniques provide for transmission of uplink data from a user equipment (UE) in the absence of scheduled uplink resources for the uplink data transmission that are allocated to the UE prior to the transmission of the uplink data. Various examples provide frame structures that may be used for unscheduled uplink transmissions of a UE. Unscheduled uplink transmissions may be transmitted in a shared or unlicensed radio frequency spectrum, and access to the shared or unlicensed radio frequency spectrum may be determined based on a priority of an operator associated with a UE for accessing the spectrum. Beamforming techniques may be used for uplink and downlink transmissions and beam widths for beamformed transmissions may be selected based on the information transmitted in a transmission, an operator priority for use of shared radio frequency spectrum, or any combination thereof.

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Номер записи: 85
10-01-2019 дата публикации

Method, device, and system for signal transmission in unlicensed band

Номер: US20190014483A1
Автор: Geonjung Ko, Jinsam Kwak, Juhyung Son, Minseok Noh
Принадлежит: Wilus Institute of Standards and Technology Inc

Disclosed relates to a method, device, and system for performing downlink transmission. Specifically, the disclosed relates to a method including when the downlink signal includes a physical downlink shared channel (PDSCH) and a channel in the specific cell is sensed to be idle for a first predefined interval, wherein the processor performs backoff after the second predefined time in order to perform the downlink transmission, and when the downlink transmission includes a Discovery Reference Signal (DRS) and the channel in the specific cell is sensed to be idle for a second predefined interval, performing the downlink transmission immediately after the second predefined interval, and a device and system therefor.

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Номер записи: 86
10-01-2019 дата публикации

METHOD FOR TRANSMITTING/RECEIVING UPLINK SIGNAL AND DEVICE SUPPORTING SAME IN WIRELESS COMMUNICATION SYSTEM SUPPORTING UNLICENSED BAND

Номер: US20190014594A1
Автор: Ahn Joonkui, KIM Seonwook, Park Hanjun, Yang Suckchel
Принадлежит: LG ELECTRONICS INC.

Disclosed are a method for transmitting/receiving an uplink signal between a terminal and a base station and a device supporting same in a licensed assisted access (LAA) system in which the base station or the terminal executes listen-before-talk (LBT)-based signal transmission. Specifically, disclosed are: a method for a terminal transmitting an uplink signal by executing an uplink LBT operation which is based on LBT-related information if the base station provides the LBT-related information for the uplink LBT operation of the terminal; and a device supporting same. 1. A method of transmitting an uplink signal , which is transmitted by a user equipment (UE) to a base station in a wireless communication system supporting an unlicensed band , the method comprising:receiving information indicating an energy detection threshold value or an equation of calculating the energy detection threshold value for an uplink listen before talk (LBT) operation from the base station; andtransmitting the uplink signal by performing the uplink LBT based on the energy detection threshold value indicated by the received information or the energy detection threshold value calculated using the equation indicated by the received information,wherein when the received information indicates the equation of calculating the energy detection threshold value, the equation is determined based on whether or not the unlicensed band is shared with a different communication technology.2. The method of claim 1 , wherein the received information indicates one of two equations based on whether or not the unlicensed band is shared with the different communication technology.3. The method of claim 2 , wherein the different communication technology contains a Wi-Fi communication technology.4. The method of claim 1 , wherein the information is transmitted via a higher layer signaling.5. The method of claim 1 , wherein the information is transmitted via downlink control information (DCI).6. A method of ...

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Номер записи: 87
10-01-2019 дата публикации

Terminal apparatus, base station apparatus, and communication method

Номер: US20190014598A1
Автор: Kazunari Yokomakura, Kimihiko Imamura, Naoki Kusashima, Shoichi Suzuki, Takashi Hayashi, Tatsushi Aiba, Tomoki Yoshimura, Wataru Ouchi
Принадлежит: Sharp Corp

Uplink communication is efficiently performed in non-allocated frequencies. The terminal apparatus includes: a reception unit configured to receive downlink control information on a PDCCH; and a transmission unit configured to transmit a random access preamble. For a first frame structure type, the downlink control information is used to configure a subframe number of a first uplink subframe in which transmission of the random access preamble is allowed. For a second frame structure type, the downlink control information is used to configure a subframe number of a second uplink subframe in which transmission of the random access preamble is allowed and a symbol number of an uplink symbol in the second uplink subframe.

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Номер записи: 88
14-01-2021 дата публикации

METHOD AND APPARATUS FOR WIDEBAND PRACH CONFIGURATION FOR NR UNLICENSED

Номер: US20210014694A1
Автор: Kim Eun Sun, Li Yingzhe, Si Hongbo
Принадлежит:

A method of a user equipment (UE) in a wireless communication system supporting a shared spectrum channel access is provided. The method comprises: receiving, from a base station (BS), a set of higher layer parameters including a subcarrier spacing of a physical random access channel (PRACH) preamble, a logical root index (i) for the PRACH preamble, and an index (zeroCorrelationZoneConfg); determining a sequence length (L) for the PRACH preamble based on the subcarrier spacing of the PRACH preamble; determining a physical root index (i) for the PRACH preamble based on the logical root index (i); determining a cyclic shift (N) for the PRACH preamble based on the index (zeroCorrelationZoneConfg); generating the PRACH preamble based on the determined sequence length L, the determined physical root index i, and the determined cyclic shift N; and transmitting, to the base station (BS) over the shared spectrum channel, the PRACH preamble. 1. A user equipment (UE) in a wireless communication system supporting a shared spectrum channel access , the UE comprising: a subcarrier spacing of a physical random access channel (PRACH) preamble,', {'sub': 'log', 'a logical root index (i) for the PRACH preamble, and'}, 'an index (zeroCorrelationZoneConfg); and, 'receive, from a base station (BS), a set of higher layer parameters including, 'a transceiver configured to [{'sub': 'RA', 'determine a sequence length (L) for the PRACH preamble based on the subcarrier spacing of the PRACH preamble,'}, {'sub': phy', 'log, 'determine a physical root index (i) for the PRACH preamble based on the logical root index (i),'}, {'sub': 'cs', 'determine a cyclic shift (N) for the PRACH preamble based on the index (zeroCorrelationZoneConfg), and'}, {'sub': RA', 'phy', 'cs, 'generate the PRACH preamble based on the determined sequence length L, the determined physical root index i, and the determined cyclic shift N,'}], 'a processor operably connected to the transceiver, the processer configured ...

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Номер записи: 89
14-01-2021 дата публикации

BIDIRECTIONAL LISTEN-BEFORE-TALK OPERATION

Номер: US20210014699A1
Автор: AKKARAKARAN Sony, Li Junyi, Luo Tao, RYU Jung Ho
Принадлежит:

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless node may perform a listen-before-talk (LBT) operation in a first direction and a second direction, wherein the second direction is opposite to the first direction, and wherein the LBT operation is performed using a first receive beam in the first direction and a second receive beam in the second direction, and selectively performing a transmission in the first direction based at least in part on a result of the LBT operation. Numerous other aspects are provided. 1. A method of wireless communication performed by a wireless node , comprising: 'wherein the LBT operation is performed using a first receive beam in the first direction and a second receive beam in the second direction; and', 'performing a listen-before-talk (LBT) operation in a first direction and a second direction, wherein the second direction is opposite to the first direction,'}selectively performing a transmission in the first direction based at least in part on a result of the LBT operation.2. The method of claim 1 , wherein the LBT operation is performed using at least one of:a plurality of beams, including the first receive beam, in the first direction, ora plurality of beams, including the second receive beam, in the second direction.3. The method of claim 1 , wherein claim 1 , when the LBT operation results in a detection of a threshold level of interference in either of the first direction or the second direction claim 1 , the transmission is not performed.4. The method of claim 1 , wherein the LBT operation comprises an LBT listen operation.5. The method of claim 1 , wherein performing the LBT operation in the first direction and the second direction is based at least in part on an indication from a media access control layer of the wireless node to a physical layer of the wireless node claim 1 , and wherein the physical layer of the wireless node configures the LBT operation in ...

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Номер записи: 90
09-01-2020 дата публикации

Signal transmission method, apparatus, and system

Номер: US20200015093A1
Автор: Hantao LI, Zhenyu Li
Принадлежит: Huawei Technologies Co Ltd

This application provides a signal transmission method, apparatus, and system, and a device. The method may include determining, by a second access network device, that a first channel is idle. The method may also include sending, by the second access network device, first information that indicates occupancy of the first channel, where the first information includes a first power value and first duration, and the first power value is power used by the second access network device to send a signal through the first channel in the first duration. Therefore, spectrum efficiency of an unlicensed spectrum is improved.

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Номер записи: 91
09-01-2020 дата публикации

METHOD, APPARATUS, AND SYSTEM FOR PHYSICAL CHANNEL TRANSMISSION IN UNLICENSED BAND

Номер: US20200015094A1
Автор: Kwak Jinsam, NOH Minseok, Son Juhyung
Принадлежит:

A user equipment of a wireless communication system is disclosed. The user equipment includes a communication module, and a processor. The processor is configured to transmit a radio frame divided into a plurality of subframes through the communication module, and perform a UL transmission in a partial subframe having a duration shorter than one subframe duration to the base station based on at least one of an indication of a base station and a result of a channel access of the wireless communication system. 1. A user equipment of a wireless communication system , the user equipment comprising:a communication module; anda processor,wherein the processor is configured to:perform a uplink (UL) transmission including a single or a plurality of subframes by using the communication module, and perform a UL transmission in a partial subframe having a duration shorter than a duration of one subframe to a base station according to at least one of an indication of the base station and a result of a channel access of the wireless communication system.2. The user equipment of claim 1 , wherein the processor is configured to:when the user equipment accesses a channel using a channel access based random backoff, adjust a value of a contention window used in the channel access based random backoff based on whether a transmission of a reference subframe previously transmitted by the user equipment using the channel access based random backoff is successful or not, andattempt a UL transmission to the base station by accessing the channel based on the value of the contention window,wherein the reference subframe comprises the partial subframe,wherein the contention window indicates a range in which a natural number that determines a backoff time in a procedure of the channel access based random backoff is obtained randomly,wherein the value of the contention window is the largest value among values that the natural number is capable of having.3. The user equipment of claim 2 , ...

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Номер записи: 92
09-01-2020 дата публикации

METHODS AND SYSTEMS FOR REUSE OF A WIRELESS MEDIUM DURING WAKE-UP OF A WIRELESS DEVICE

Номер: US20200015167A1
Автор: Azizi Shahrnaz, HUANG PO-KAI, Kenney Thomas J., Park Minyoung, Stacey Robert J.
Принадлежит:

Methods, devices, and systems for retransmission of wake-up signals from a first station to a second station over a wireless network are disclosed. In some aspects, a wake-up signal is encoded for transmission to the second station. While the first station is waiting for an acknowledgment of the wake-up signal from the second station, the second station may retransmit the wake up signal and/or encode a packet for transmission to a third station. In some aspects, whether the wake-up signal is retransmitted is based in part, on at least one of whether a number of timeout events for wake-up signals transmitted to the second station exceeds a maximum timeouts threshold, whether a number of wake-up signals transmitted to the second station exceeds a maximum wake-up signals threshold; or whether a maximum predetermined elapsed time since a first wake-up signal was transmitted to the second station is exceeded. 1. (canceled)3. The apparatus of claim 2 , wherein the processing circuitry is configured to cause the AP to transmit the wake-up packet to a WUR of the non-AP STA at a pre-scheduled time.4. The apparatus of claim 2 , wherein the wake-up packet comprises a plurality of wake-up frames claim 2 , each wake-up frame for receipt by a non-AP STA indicated to be a WUR STA.5. The apparatus of claim 4 , wherein the wake-up frames of the plurality are configured by the processing circuitry for frequency division multiple access (FDMA) transmission.6. The apparatus of claim 4 , wherein each of the wake-up frames are configured by the processing circuitry for FDMA transmission on different frequency channels comprising one or more 20 MHz channels claim 4 , a 40 MHz channel and an 80 MHz channel.7. The apparatus of claim 2 , wherein during the transition delay claim 2 , the processing circuitry is configured to encode a transmission of a packet to a second non-AP STA.8. The apparatus of wherein after transmission of the wake-up packet claim 2 , the processing circuitry is ...

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Номер записи: 93
09-01-2020 дата публикации

CHANNEL ACCESS INDICATION METHOD AND DEVICE

Номер: US20200015179A1
Автор: Gan Ming, YANG Xun, Zuo Xin
Принадлежит: Huawei Technologies Co., Ltd.

A channel access indication method and device. The method includes: receiving, by a first communications device, a channel synchronization request sent by a second communications device, where the channel synchronization request is used to request the first communications device to send a synchronization frame to the second communications device, and a wake-up receiver is configured for the second communications device; and according to the channel synchronization request and a time at which the second communications device is woken up and that is learned by the first communications device based on preset signaling, sending, by the first communications device when a channel is idle, the synchronization frame to the woken-up second communications device, where the synchronization frame is used to instruct the woken-up second communications device to access the channel after receiving the synchronization frame. 1. A channel access indication method , comprising:receiving, by a first communications device, a channel synchronization request sent by a second communications device, wherein the channel synchronization request requests the first communications device to send a synchronization frame to the second communications device, and a wake-up receiver is configured for the second communications device; andaccording to the channel synchronization request and a time at which the second communications device is woken up and that is learned by the first communications device based on preset signaling, sending, by the first communications device when a channel is idle, the synchronization frame to the woken-up second communications device, wherein the synchronization frame instructs the woken-up second communications device to access the channel after receiving the synchronization frame.2. The method according to claim 1 , wherein there are a plurality of woken-up second communications devices claim 1 , and the sending claim 1 , when a channel is idle claim 1 , of the ...

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Номер записи: 94
14-01-2021 дата публикации

SYSTEM AND METHOD OF MODES FOR DATA TRANSMISSION

Номер: US20210014871A1
Автор: Merlin Simone
Принадлежит:

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus obtain a signal from a remote wireless node. The apparatus may switch between a first mode and a second mode in response to the signal. The apparatus may sense the shared transmission medium and sense if an absence of traffic is detected. The apparatus may delay data transmission for a fixed time interval from detecting the absence of traffic. The apparatus may initiate the data transmission at the end of the fixed time interval if operating in the first mode or initiate the data transmission at the end of a random time interval following the fixed time interval if operation in the second mode. 123-. (canceled)24. A method of wireless communications by a first apparatus , comprising:receiving a first message associated with synchronized transmission on a wireless channel;determining a schedule for the synchronized transmission with at least one second apparatus on the wireless channel based on the first message; andinitiating transmission of a first sequence of packets based on the schedule, wherein a first start time of the first sequence of packets and a second start time of at least one second sequence of packets transmitted by the at least one second apparatus are synchronized on the wireless channel.251. The method of claim , wherein a first length of at least one of the first sequence of packets differs from a second length of at least one of the at least one second sequence of packets.26. The method of claim 25 , wherein each of the first and second lengths is less than a packet length threshold.271. The method of claim claim 25 , wherein a first end time of at least one of the first sequence of packets is unsynchronized on the wireless channel with a second end time of at least one of the at least one second sequence of packets.281. The method of claim claim 25 , further comprising:detecting an absence of traffic on the wireless channel,wherein ...

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Номер записи: 95
14-01-2021 дата публикации

ACCOMMODATING SIMULTANEOUS TRANSMISSIONS IN A WIRELESS CHANNEL

Номер: US20210014873A1
Автор: Akhtar Nadeem, Parekh Jatin
Принадлежит:

Systems and methods are disclosed for improving communication efficiency in environments featuring both 802.11ax devices and legacy devices. Although 802.11ax introduces the ability for multiple devices to transmit simultaneously over a wireless channel, this feature is not used to its full potential because legacy devices transmit using turn-based communication (waiting for the channel to free up before transmitting). To create the illusion that the channel is free, in one method, an 802.11ax access point lowers the power for 802.11ax transmissions in a portion of a wireless channel being utilized by the legacy device. In another method, the 802.11ax access point blanks the portion of the wireless channel altogether (i.e., does not schedule transmissions over the portion). As a result of these methods, signal interference is reduced, and legacy devices do not halt transmissions to follow turn-based communication. 1. A method for adjusting transmission power of devices communicating on a resource unit within a wireless channel , the method comprising:generating, at an access point, a resource unit schedule that assigns a first portion of a wireless channel to a client device, wherein the access point communicates with the client device using radio transmission at a first power level and in accordance to a first wireless protocol;determining that a transmission of a second wireless protocol signal is occurring in the first portion of the wireless channel;in response to determining that the transmission of the second wireless protocol signal is occurring in the first portion of the wireless channel, determining a second power level for transmissions by the access point to the client device in the first portion of the wireless channel;modifying the resource unit schedule to assign the second power level to transmissions made by the access point when communicating with the client device in the first portion of the wireless channel; andtransmitting, from the access point ...

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Номер записи: 96
14-01-2021 дата публикации

Data scheduling in uplink burst

Номер: US20210014874A1
Автор: Jing Sun, Kapil Bhattad, Ozcan Ozturk, Pravjyot Singh DEOGUN, Xiaoxia Zhang
Принадлежит: Qualcomm Inc

Certain aspects of the present disclosure provide techniques for high priority data scheduling in uplink bursts. Aspects provide a method that may be performed by a user equipment (UE). The method generally includes receiving one or more uplink grants scheduling a plurality of transmission occasions for the UE. The method generally includes performing a listen-before-talk (LBT) procedure to attempt to acquire a channel for transmitting in at least one of the plurality of transmission occasions. The method generally includes determining one or more of the plurality of transmission occasions to transmit data based, at least in part, on the LBT procedure.

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Номер записи: 97
14-01-2021 дата публикации

Grant-Free Uplink Transmission in Unlicensed Spectrum

Номер: US20210014878A1
Автор: Salem Mohamed Adel, ZHANG Jiayin
Принадлежит:

Methods and devices for grant-free uplink transmission in unlicensed spectrum are provided. A base station (BS) transmits grant-free resource configuration information to one or more electronic devices (EDs). The grant-free resource configuration information is used to configure the ED for GF uplink transmission in unlicensed spectrum. The GF resource configuration information includes GF ED group-specific resource configuration information indicating GF ED group-specific time-frequency (T/F) resources of the unlicensed spectrum for GF uplink transmission. The ED(s) transmit grant-free uplink transmissions over the unlicensed spectrum in accordance with the GF resource configuration information. 1receiving, by an electronic device (ED) in a group of EDs, a grant-free group-specific resource configuration information from a base station, the grant-free group-specific resource configuration information specifying a channel occupancy time (COT) parameter for accessing channel in an unlicensed spectrum; andtransmitting, by the ED, a grant-free uplink transmission over the channel of the unlicensed spectrum in accordance with the COT parameter specified by the grant-free group-specific resource configuration information.. A method for communicating in a wireless communication network, the method comprising: This application is a continuation of U.S. patent application Ser. No. 16/518,641, filed on Jul. 22, 2019 and entitled “Grant-Free Uplink Transmission in Unlicensed Spectrum,” which is a continuation of U.S. patent application Ser. No. 15/694,558, filed on Sep. 1, 2017 (Now U.S. Pat. No. 10,362,593 issued on Jul. 23, 2019) and entitled “Grant-Free Uplink Transmission in Unlicensed Spectrum,” which applications are hereby incorporated herein by reference as if reproduced in its entirety.The present disclosure relates generally to wireless communications, and in particular embodiments, to grant-free uplink transmissions in unlicensed spectrum.In wireless communication ...

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Номер записи: 98
14-01-2021 дата публикации

MULTIPLE GRANT SCHEDULING FOR HYBRID AUTOMATIC REPEAT REQUEST (HARQ) AND RANDOM ACCESS

Номер: US20210014890A1
Автор: Bhattad Kapil, DEOGUN Pravjyot Singh, KHOSHNEVISAN Mostafa, Ozturk Ozcan, Sun Jing, Zhang Xiaoxia
Принадлежит:

Wireless communications systems and methods related to multi-grant scheduling are provided. A user equipment (UE) receives, from a base station (BS), an uplink (UL) scheduling grant indicating one or more transmission occasions. The UE performs a category 2 (CAT2) listen-before-talk (LBT) based on the one or more transmission occasions being within a channel occupancy time (COT) of the BS. The UE transmits one or more UL transmissions during the one or more transmissions occasions based on the CAT2 LBT. 1. A method of wireless communication performed by a user equipment (UE) , the method comprising:receiving, from a base station (BS), an uplink (UL) scheduling grant indicating one or more transmission occasions;performing a category 2 (CAT2) listen-before-talk (LBT) based on the one or more transmission occasions being within a channel occupancy time (COT) of the BS; andtransmitting one or more UL transmissions during the one or more transmission occasions based on the CAT2 LBT.2. The method of claim 1 , wherein the transmitting the one or more UL transmissions comprises:transmitting a first UL transmission of the one or more UL transmissions during a first transmission occasion of the one or more transmission occasions based on the CAT2 LBT; andtransmitting a second UL transmission of the one or more UL transmissions during a second transmission of the one or more transmission occasions without performing any LBT based on the first transmission occasion and second transmission occasion being contiguous transmission occasions.3. The method of claim 1 , wherein the UL scheduling grant indicates:a number of transmission occasions for each hybrid automatic repeat request (HARQ) process of a plurality of HARQ processes; andan association between the one or more transmission occasions and the plurality of HARQ processes.4. The method of claim 3 , wherein the UL scheduling grant indicates multiple transmission occasions of the one or more transmission occasions for a ...

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Номер записи: 99
14-01-2021 дата публикации

FBE Framework for NR Systems Operating on Unlicensed Spectrum

Номер: US20210014891A1
Автор: Aldana Carlos H., KWAK Yongjun, Li Yingyang, Talarico Salvatore
Принадлежит:

Apparatuses, systems, and methods are disclosed for frame based equipment (FBE) framework for new radio (NR) systems operating on the unlicensed spectrum. A processor for a base station performs a first clear channel assessment (CCA) using Category-1 (CAT-) or CAT-2 listen-before-talk (LBT) on an unlicensed spectrum. The processor transmits first downlink (DL) data to one or more user equipments (UEs) within a fixed frame period (FFP) in accordance with a frame based equipment (FBE) framework for new radio (NR) on the unlicensed spectrum. The base station operates as an initiating device and the one or more UEs operate as responding devices. The processor performs a second CCA responsive to a gap of X orthogonal frequency-division multiplexing (OFDM) symbols between a DL burst and an uplink (UL) burst being greater than a threshold gap. The processor transmits second DL data within the FFP responsive to performing the second CCA. 1. A processor for a base station , the processor comprising:first circuitry configured to perform a first clear channel assessment (CCA) using Category-1 (CAT-1) or CAT-2 listen-before-talk (LBT) on an unlicensed spectrum;second circuitry configured to transmit first downlink (DL) data to one or more user equipments (UEs) within a fixed frame period (FFP) in accordance with a frame based equipment (FBE) framework for new radio (NR) on the unlicensed spectrum, wherein the base station is configured to operate as an initiating device and the one or more UEs are configured to operate as responding devices;third circuitry configured to perform a second CCA responsive to a gap of X orthogonal frequency-division multiplexing (OFDM) symbols between a DL burst and an uplink (UL) burst being greater than a threshold gap; andfourth circuitry configured to transmit second DL data within the FFP responsive to performing the second CCA.2. The processor of claim 1 , wherein the second circuitry is further configured to transmit the first DL data to the ...

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Номер записи: 100