Communication apparatus and automatic gain control method

Provided is a communication apparatus including a first communication unit for performing communication using a carrier having a first frequency, a second communication unit having a plurality of antennas, for performing communication using a carrier having a second frequency, a first communication processing unit for processing a signal received by the first communication unit and causing to transmit a signal, and a second communication processing unit for processing a signal received by the second communication unit and causing to transmit a signal. The second communication processing unit includes a synchronization unit for specifying a start position of a second transmission request in which a plurality of transmission beam patterns are set in one packet based on information indicating reception initiation, and an automatic gain control unit for performing automatic gain control based on a first automatic gain control setting value.

COMMUNICATION DEVICE AND COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM

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.

Communication apparatus and automatic gain control

Provided is a communication apparatus including a first communication unit for performing communication using a carrier having a first frequency, a second communication unit having a plurality of antennas, for performing communication using a carrier having a second frequency, a first communication processing unit for processing a signal received by the first communication unit and causing to transmit a signal, and a second communication processing unit for processing a signal received by the second communication unit and causing to transmit a signal. The second communication processing unit includes a synchronization unit for specifying a start position of a second transmission request in which a plurality of transmission beam patterns are set in one packet based on information indicating reception initiation, and an automatic gain control unit for performing automatic gain control based on a first automatic gain control setting value.

Radio communication system and method, wireless network forming device, radio transmission unit and method, and radio reception unit and method

Radio communication devices receive timing reference pulses from a timing generation device and can acquire synchronism based on the received pulses, so that even on the ultra wide band (UWB) radio communication system, where there is no carrier as exists in the conventional radio communication systems, there is no need to add a redundant preamble signal ahead of transmitted information in order to acquire initial synchronism. In order to receive an asynchronous signal, there is no need to perform detection for a very long time to find whether the signal is present or absent. The application of an access control system according to the present invention to UWB radio communication implements high-speed asynchronous radio communication.

USER EQUIPMENT, METHOD FOR PERFORMING HANDOVER, BASE STATION, AND RADIO COMMUNICATION SYSTEM

A mobile station in a wireless communication network. The mobile station including a radio communication unit that communicates with a first base station via a plurality of component carriers, and a control unit that controls the radio communication unit to initiate a handover procedure to a second base station after receiving at least one handover command. 1. A mobile station in a wireless communication network , the mobile station comprising:a radio communication unit configured to communicate with a first base station via a plurality of component carriers; anda control unit configured to control the radio communication unit to initiate a handover procedure to a second base station after receiving at least one handover command for the plurality of component carriers.2. The mobile station of claim 1 , whereinthe radio communication unit is configured to communicate with the first base station via one of the plurality of component carriers having a first cyclic prefix length, and communicate with the second base station via one of the plurality of component carriers having a second cyclic prefix length.3. The mobile station of claim 1 , whereinthe radio communication unit is configured to receive a plurality of handover commands, each corresponding to one of the plurality of component carriers, andthe control unit is configured to control the radio communication unit to initiate a handover procedure to the second base station for each of the plurality of component carriers after receiving the plurality of handover commands.4. A mobile station in a wireless communication network claim 1 , the mobile station comprising:a radio communication unit configured to communicate with a first base station via a plurality of component carriers each having a first cyclic prefix length; anda control unit configured to control the radio communication unit to initiate a handover procedure from the first base station to a second base station after receiving a handover command, ...

Radio-Communication Device and Radio-Communication Method

The disclosed invention determines whether a reception packet is an MM packet or a GF packet with precision and avoids unnecessary decoding operations performed at the GF-packet-reception time and inefficient communications. An OFDM symbol including 52 tones is transmitted when the MM packet is used, but an OFDM symbol including 56 tones is transmitted when the GF packet is used. Therefore, it is verified whether or not a signal exists in an FFT output at each of ±27 and 28 shown in a subcarrier index so that the format of the reception packet is determined. Otherwise, the packet format is determined on the basis of the Cyclic-Shift amount that changes for every format. When the GF packet is used, decoding processing performed in an L-SIG and afterward is stopped.

Wireless communication apparatus, communication system, and wireless communication apparatus control method to exchange services

There is provided a wireless communication apparatus including: a communication unit configured to use wireless communication to transmit and receive data related to a service provided by at least one of the wireless communication apparatus and another wireless communication apparatus with other wireless communication apparatuses present within a designated range; and a control unit configured to associate service information for identifying the service with user information for identifying a user using a wireless communication apparatus that provides the service, and include and transmit the associated information in the data.

User equipment, method for performing handover, base station, and radio communication system

A mobile station in a wireless communication network. The mobile station including a radio communication unit that communicates with a first base station via a plurality of component carriers, and a control unit that controls the radio communication unit to initiate a handover procedure to a second base station after receiving at least one handover command.

Radio communication system, radio communication apparatus and radio communication method, and computer program

Under a multi-cell radio communication environment where connection between cells or TDMA frame synchronization is not established, a mobile station carries out an adjacent cell search under low power consumption. Adjacent cell information acquired through search by the mobile station is managed centered on a base station and may be provided by the base station as adjacent cell information, when the mobile station carries out the adjacent cell search. The adjacent cell information includes, for example, a TDMA frame offset between cells so that the mobile station receives a broadcast channel of the adjacent cell at appropriate timing based on the adjacent cell information and therefore does not need to perform unnecessary reception operation in the event of a handoff.

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

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.

Wireless communication apparatus, communication system and wireless communication apparatus control method to exchange services

There is provided a wireless communication apparatus including: a communication unit configured to use wireless communication to transmit and receive data related to a service provided by at least one of the wireless communication apparatus and another wireless communication apparatus with other wireless communication apparatuses present within a designated range; and a control unit configured to associate service information for identifying the service with user information for identifying a user using a wireless communication apparatus that provides the service, and include and transmit the associated information in the data.

Information processing device, wireless communication system, information processing method, and program

[Object] To propose an information processing device, wireless communication system, information processing method, and storage medium which can mutually authenticate communication partners simply and safely. [Solution] The information processing device including: an acquisition unit configured to acquire first identification information for identifying another terminal; and a communication unit configured to transmit information for mutual authentication between an own terminal and the other terminal to the other terminal specified based on the first identification information through a network service.

COMMUNICATION APPARATUS AND COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM

By effectively utilizing the beam pattern used at the time of the last communication, a directional link can be efficiently established, thereby reducing overhead. When establishing a link, a communication apparatus 100 transmits a preparation frame by using the last used transmit beam pattern, thereby efficiently establishing a directional link and reducing overhead. Also, when establishing a link, the communication apparatus 100 uses the last used receive beam pattern to receive a preparation frame whose transmission timing is known, thereby efficiently establishing a directional link and reducing overhead.

Information processing apparatus for controlling data transmission between devices in a network

There is provided an information processing apparatus, the information processing apparatus including: a control unit configured to cause a second information processing apparatus to output authentication key information for allowing a first information processing apparatus to make a wireless connection with the second information processing apparatus in order to conduct data transmission from the first information processing apparatus to the second information processing apparatus using wireless communication, and determine to allow the first information processing apparatus to make the wireless connection on the basis of authentication key information input into the first information processing apparatus and the output authentication key information.

Communication device, communication control method and communication system

To enable high-speed learning of an antenna directionality to be used for millimeter-wave communication, there is provided a communication device including a first radio communication unit capable of radio communication in accordance with a first communication method, and a second radio communication unit capable of radio communication in accordance with a second communication method using a higher frequency band than the first communication method, in which, upon receiving an instruction signal instructing to learn a beam directionality, the first radio communication unit determines a reception start time point of a beam reference signal based on the instruction signal, and the second radio communication unit starts reception of the beam reference signal from the reception start time point determined by the first radio communication unit and determines a parameter value for specifying an optimum beam pattern based on the received beam reference signal.

COMMUNICATION APPARATUS AND STORAGE MEDIUM

There is provided a communication apparatus including a communication unit having an optical communication scheme and a different communication scheme from the optical communication scheme, a level setting unit configured to set a security level in data communication, and a communication scheme switching unit configured to switch communication schemes of the communication unit in accordance with the security level that is set by the level setting unit. 1. A communication apparatus comprising:a communication unit having an optical communication scheme and a different communication scheme from the optical communication scheme;a level setting unit configured to set a security level in data communication; anda communication scheme switching unit configured to switch communication schemes of the communication unit in accordance with the security level that is set by the level setting unit.2. The communication apparatus according to claim 1 ,wherein, after time data is transmitted in the optical communication scheme, the communication unit continuously transmits the time data in the optical communication scheme.3. The communication apparatus according to claim 1 ,wherein, after data is transmitted in the optical communication scheme, the communication unit continuously receives, in the optical communication scheme, a response from a destination device to which the data is transmitted, and transmits a control signal for deleting the transmitted data to the destination device in the different communication scheme when the response is no longer received.4. The communication apparatus according to claim 1 ,wherein, when the security level is higher than a predetermined value that is set in advance, the communication scheme switching unit switches the communication scheme to the optical communication scheme.5. The communication apparatus according to claim 1 ,wherein the level setting unit sets the security level in accordance with a content of data that is transmitted through ...

COMMUNICATION APPARATUS AND AUTOMATIC GAIN CONTROL

Provided is a communication apparatus including a first communication unit for performing communication using a carrier having a first frequency, a second communication unit having a plurality of antennas, for performing communication using a carrier having a second frequency, a first communication processing unit for processing a signal received by the first communication unit and causing to transmit a signal, and a second communication processing unit for processing a signal received by the second communication unit and causing to transmit a signal. The second communication processing unit includes a synchronization unit for specifying a start position of a second transmission request in which a plurality of transmission beam patterns are set in one packet based on information indicating reception initiation, and an automatic gain control unit for performing automatic gain control based on a first automatic gain control setting value.

Communication Device, Communication Control Method and Communication System

To enable high-speed learning of an antenna directionality to be used for millimeter-wave communication, there is provided a communication device including a first radio communication unit capable of radio communication in accordance with a first communication method, and a second radio communication unit capable of radio communication in accordance with a second communication method using a higher frequency band than the first communication method, in which, upon receiving an instruction signal instructing to learn a beam directionality, the first radio communication unit determines a reception start time point of a beam reference signal based on the instruction signal, and the second radio communication unit starts reception of the beam reference signal from the reception start time point determined by the first radio communication unit and determines a parameter value for specifying an optimum beam pattern based on the received beam reference signal.

Radio communication system, radio communication apparatus and radio communication method, and computer program

Under a multi-cell radio communication environment where connection between cells or TDMA frame synchronization is not established, a mobile station carries out an adjacent cell search under low power consumption. Adjacent cell information acquired through search by the mobile station is managed centered on a base station and may be provided by the base station as adjacent cell information, when the mobile station carries out the adjacent cell search. The adjacent cell information includes, for example, a TDMA frame offset between cells so that the mobile station receives a broadcast channel of the adjacent cell at appropriate timing based on the adjacent cell information and therefore does not need to perform unnecessary reception operation in the event of a handoff.

Communication terminal apparatus and control method thereof

A communication terminal apparatus such as a portable telephone apparatus has a main body, a selection operation unit, an operation inputting unit, a display unit, and a controller. The main body has a speaker and a microphone. The selection operation unit is provided on the main body and selects one mode from a plurality of modes of the communication terminal apparatus. The operation inputting unit is provided on the main body and changes functions based on the mode selected by the selection operation unit. The display unit is provided on the main body and displays information required for selection operation or inputting operation by the selection operation unit and/or the operation inputting unit. The controller sets a mode selected based on the input from the selection operation unit, and switches a function of the operation inputting unit based on the input from the selection operation unit. The controller controls display operation of the display unit based on the input from the selection operation unit and/or the operation inputting unit.

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

By effectively utilizing the beam pattern used at the time of the last communication, a directional link can be efficiently established, thereby reducing overhead. When establishing a link, a communication apparatus 100 transmits a preparation frame by using the last used transmit beam pattern, thereby efficiently establishing a directional link and reducing overhead. Also, when establishing a link, the communication apparatus 100 uses the last used receive beam pattern to receive a preparation frame whose transmission timing is known, thereby efficiently establishing a directional link and reducing overhead.

Communication system, apparatus and method for controlling communication, apparatus and method for communication, and computer program

To deliver user data from a mobile terminal without the mediation of base station control stations, each base station is provided with intra cell links for data communication with mobile terminals present in the specified cell wherein communication can be conducted; and inter base station links for data communication with adjacent base stations. When each base station receives user data from an adjacent base station, the base station sends the user data to a mobile terminal as destination if the mobile terminal is present in the cell of the base station, and resends the user data to adjacent base stations using the above inter base station links if the mobile terminal as destination of the user data is present out of the cell of the base station.

Radio communication system, radio communication terminal, and method for participating in radio communication system

A wireless communication system is capable of ensuring information reachability during the broadcast communication between terminals in a wireless communication system using the ad hoc communication system, in which a wireless communication terminal first associating with the cluster becomes a cluster master. The wireless communication terminal periodically broadcasts cluster information including terminal identifiers of already associating wireless communication terminals including itself. When another wireless communication terminal attempts to newly associate with the cluster, the wireless communication terminal receives the cluster information and performs unicast communication with each of all the already associating wireless communication terminals included in the cluster information. When reachability is ensured for communication with all the already associating wireless communication terminals, the wireless communication terminal associates with the cluster and enables the unicast ...

Wireless communication apparatus, communication system and wireless communication apparatus control method to exchange services

There is provided a wireless communication apparatus that includes a communication unit that uses wireless communication to transmit and receive data related to a service provided by at least one of the wireless communication apparatus and another wireless communication apparatus with other wireless communication apparatuses present within a designated range, and a control unit that associates service information for identifying the service with user information for identifying a user using a wireless communication apparatus that provides the service, and include and transmit the associated information in the data.

Communication system, apparatus and method for controlling communication, apparatus and method for communication, and computer program

Communication system, apparatus and method for delivering user data from a mobile terminal without the mediation of base station control stations. Each base station is provided with intra cell links for data communication with mobile terminals present in the specified cell wherein communication can be conducted and inter base station links for data communication with adjacent base stations. When a base station receives user data from an adjacent base station, the base station sends the user data to a mobile terminal as destined if the mobile terminal is present inside the cell of the base station, and resends the user data to adjacent base stations using the inter base station links if the mobile terminal is present outside of the cell of the base station.

Radio communication system and method, wireless network forming device, radio transmission unit and method, and radio reception unit and method

Radio communication devices receive timing reference pulses from a timing generation device and can acquire synchronism based on the received pulses. Accordingly, even on the UWB radio communication system, where there is no carrier as exists in the conventional radio communication systems, there is no need to add a redundant preamble signal ahead of transmitted information in order to acquire initial synchronism. In order to receive an asynchronous signal, there is no need to perform detection for a very long time to find whether the signal is present or absent. The application of an access control system according to the present invention to UWB radio communication implements high speed asynchronous radio communication.

Communication apparatus and storage medium

There is provided a communication apparatus including a communication unit having an optical communication scheme and a different communication scheme from the optical communication scheme, a level setting unit configured to set a security level in data communication, and a communication scheme switching unit configured to switch communication schemes of the communication unit in accordance with the security level that is set by the level setting unit.

Communication terminal apparatus and control method thereof

A communication terminal apparatus such as a portable telephone apparatus has a main body, a selection operation unit, an operation inputting unit, a display unit, and a controller. The main body has a speaker and a microphone. The selection operation unit is provided on the main body and selects one mode from a plurality of modes of the communication terminal apparatus. The control inputting unit is provided on the main body and changes functions based on the mode selected by the selection operation means. The display unit is provided on the main body and displays information required for selection operation or inputting operation by the selection operation unit and/or the operation inputting unit. The controller sets mode selected based on the input from the selection operation unit, and switches function of the operation input unit based on the input from the selection operation unit. The controller controls display operation of the display unit based on the input form the selection ...

Radio-communication device and radio-communication method

A radio-communication device performs processing in a communication environment in which an OFDM (Orthogonal Frequency Division Multiplexing) modulation method is used. The radio-communication device includes a signal-reception unit that receives a MIMO (Multi Input Multi Output) signal, a data-decoding unit that decodes the MIMO signal, and a data-processing unit that processes data decoded by the data-decoding unit. The radio-communication device also includes a format-determination unit that determines, based on a relative phase difference between a previous packet field and a subsequent packet field adjacent to the previous packet field, a packet format of the MIMO signal. Further, the radio-communication device includes a control unit that stops an operation of the data-decoding unit when the data-processing unit does not support the packet format, which is determined by the format-determination unit. The operation is performed in a field that comes after a field at which the format-determination ...

COMMUNICATION APPARATUS AND COMMUNICATION METHOD, COMPUTER PROGRAM, AND COMMUNICATION SYSTEM

The directivity of an antenna is efficiently trained between a transmitter and a receiver, and the training results are efficiently fed back from the receiver to the transmitter. In the case where the order of transmit beam patterns corresponding to individual time slots in a beam training signal, and the names representing the respective transmit beam patterns have already been shared through pre-setting or pre-negotiation between the transmission and reception, the receiving end can estimate received power for each time slot on the basis of transition of the received power of the beam training signal, and writes the transmit beam pattern name or time slot number corresponding to the time slot that realizes the maximum received power, in a notification signal for feedback.

Communication terminal apparatus and control method thereof

A communication terminal apparatus such as a portable telephone apparatus has a main body, a selection operation unit, an operation inputting unit, a display unit, and a controller. The main body has a speaker and a microphone. The selection operation unit is provided on the main body and selects one mode from a plurality of modes of the communication terminal apparatus. The operation inputting nit is provided on the main body and changes functions based on the mode selected by the selection operation unit. The display unit is provided on the main body and displays information required for selection operation or inputting operation by the selection operation unit and/or the operation inputting unit. The controller sets a mode selected based on the input from the selection operation unit, and switches a function of the operation inputting unit based on the input from the selection operation unit. The controller controls display operation of the display unit based on the input from the selection operation under and/or the operation inputting unit.

Communication apparatus, communication system, and method of the same

A communication apparatus capable of increasing a bit rate of communication in the down direction by using an existing bidirectional communication system, wherein mobile management, call control, wireless management, etc. are performed and communication conditions are controlled by bidirectional communication between a high speed downlink base station and a high speed downlink control portion of a terminal device via a cellular network and a cellular base station. Then, a content signal is transmitted from the high speed downlink base station to the terminal device via the high speed downlink network.

Information processing device, wireless communication system, information processing method, and program

Security is simply and safely secured when communication is performed by an information processing device including: a communication unit configured to wirelessly communicate with another terminal; an identification information acquisition unit configured to acquire first identification information that is acquired through the communication unit and encrypted for specifying the other terminal, and that is decrypted with a first decryption key managed in a network service; and a key acquisition unit configured to acquire a first encryption key associated with the first identification information in the network service when second identification information for specifying an own terminal is associated with the first identification information in the network service. The communication unit transmits information encrypted with the acquired first encryption key to the other terminal.

Communication apparatus and automatic gain control method

Provided is a communication apparatus including a first communication unit for performing communication using a carrier having a first frequency, a second communication unit having a plurality of antennas, for performing communication using a carrier having a second frequency, a first communication processing unit for processing a signal received by the first communication unit and causing to transmit a signal, and a second communication processing unit for processing a signal received by the second communication unit and causing to transmit a signal. The second communication processing unit includes a synchronization unit for specifying a start position of a second transmission request in which a plurality of transmission beam patterns are set in one packet based on information indicating reception initiation, and an automatic gain control unit for performing automatic gain control based on a first automatic gain control setting value.

WIRELESS COMMUNICATION APPARATUS, COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION APPARATUS CONTROL METHOD TO EXCHANGE SERVICES

There is provided a wireless communication apparatus including: a communication unit configured to use wireless communication to transmit and receive data related to a service provided by at least one of the wireless communication apparatus and another wireless communication apparatus with other wireless communication apparatuses present within a designated range; and a control unit configured to associate service information for identifying the service with user information for identifying a user using a wireless communication apparatus that provides the service, and include and transmit the associated information in the data. 1. A first wireless communication apparatus , comprising: [ wherein the received first data includes first user information that identifies a first user of the second wireless communication apparatus, and', 'wherein the first user information includes at least a user identifier;, 'receive first data transmitted by a second wireless communication apparatus of a plurality of second wireless communication apparatuses within a wireless connectivity range of the first wireless communication apparatus,'}, 'generate a blocked list based on the first user information; and', 'control to prohibit communication between the first wireless communication apparatus and the second wireless communication apparatus based on a result of a comparison between the first user information and second user information, wherein the second user information is included in the blocked list., 'circuitry configured to2. The first wireless communication apparatus according to claim 1 , wherein the circuitry is further configured to determine claim 1 , based on the first user information included in the received first data claim 1 , whether to receive third data associated with at least one service provided by the second wireless communication apparatus claim 1 , and wherein the third data is received from the second wireless communication apparatus.3. The first wireless ...

INFORMATION PROCESSING DEVICE, WIRELESS COMMUNICATION SYSTEM, INFORMATION PROCESSING METHOD, AND PROGRAM

[Object] To propose an information processing device, wireless communication system, information processing method, and storage medium which can mutually authenticate communication partners simply and safely. 1. An information processing device comprising:an acquisition unit configured to acquire first identification information for identifying another terminal; anda communication unit configured to transmit information for mutual authentication between an own terminal and the other terminal to the other terminal specified based on the first identification information through a network service.2. The information processing device according to claim 1 ,wherein, when the first identification information is associated with second identification information for identifying the own terminal in the network service, the communication unit transmits the information for mutual authentication to the other terminal specified based on the first identification information through the network service.3. The information processing device according to claim 2 ,wherein the information for mutual authentication includes an encryption key associated with the second identification information.4. The information processing device according to claim 3 , comprising:a key generation unit configured to generate the encryption key and a decryption key decrypting information encrypted with the encryption key.5. The information processing device according to claim 2 ,wherein the information for mutual authentication includes a passphrase for mutual authentication.6. The information processing device according to claim 2 ,wherein the first identification information includes a first user ID indicating a user of the other terminal.7. The information processing device according to claim 6 ,wherein the second identification information includes a second user ID indicating a user of the own terminal, andwherein, when the first user ID is associated with the second user ID in the network service, ...

INFORMATION PROCESSING DEVICES, COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM

Content is to be provided at an appropriate time. 1. An information processing device comprising:a communication unit configured to receive and transmit content through wireless communication; anda control unit configured to perform control to transfer the content to another information processing device from a location after reception of the content, the another information processing device existing in a predetermined range, the predetermined range being based on the location, a predetermined condition being satisfied at the location, the predetermined condition being based on a location of first transmission of the content.2. The information processing device according to claim 1 , wherein the control unit determines whether the information processing device exists at a location where the predetermined condition is satisfied based on information accompanying the content.3. The information processing device according to claim 2 , wherein the control unit transfers the content to the another information processing device during a period from a time when the information processing device exists at a location where the predetermined condition is first satisfied till a time when the information processing device exists at a location where the predetermined condition is not satisfied.4. The information processing device according to claim 1 , wherein the control unit determines whether the information processing device exists at a location where the predetermined condition is satisfied based on at least one of a first distance claim 1 , a second distance claim 1 , a first time claim 1 , and a second time claim 1 , the first distance being a distance from the location of the first transmission of the content claim 1 , the second distance being a distance of movement of the information processing device from the location of the first transmission of the content claim 1 , the first time being a time elapsed since a time of the first transmission of the content claim 1 , ...

Information processing device, wireless communication system, information processing method, and program

Security is simply and safely secured when communication is performed by an information processing device including: a communication unit configured to wirelessly communicate with another terminal; an identification information acquisition unit configured to acquire first identification information that is acquired through the communication unit and encrypted for specifying the other terminal, and that is decrypted with a first decryption key managed in a network service; and a key acquisition unit configured to acquire a first encryption key associated with the first identification information in the network service when second identification information for specifying an own terminal is associated with the first identification information in the network service. The communication unit transmits information encrypted with the acquired first encryption key to the other terminal.

Information processing apparatus, communication system, information processing method, and program

There is provided an information processing apparatus, its information processing method, and a program causing a computer to execute the method, the information processing apparatus including: a control unit configured to cause a second information processing apparatus to output authentication key information for allowing a first information processing apparatus to make a wireless connection with the second information processing apparatus in order to conduct data transmission from the first information processing apparatus to the second information processing apparatus using wireless communication, and decide whether or not to allow the first information processing apparatus to make the wireless connection on the basis of authentication key information input into the first information processing apparatus and the output authentication key information.

WIRELESS COMMUNICATION APPARATUS, COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION APPARATUS CONTROL METHOD TO EXCHANGE SERVICES

There is provided a wireless communication apparatus including: a communication unit configured to use wireless communication to transmit and receive data related to a service provided by at least one of the wireless communication apparatus and another wireless communication apparatus with other wireless communication apparatuses present within a designated range; and a control unit configured to associate service information for identifying the service with user information for identifying a user using a wireless communication apparatus that provides the service, and include and transmit the associated information in the data. 1. A first wireless communication apparatus , comprising: connect to a wireless mesh network with a plurality of wireless communication apparatuses;', 'wherein the received first signal includes first user information related to a user of the second wireless communication apparatus;', 'receive a first signal transmitted by a second wireless communication apparatus,'}, 'store a block list generated based on the first user information and a service of a plurality of services; and', 'control to prohibit communication for the service between the wireless mesh network and the second wireless communication apparatus based on a result of a comparison between the first user information and the block list, wherein the first user information is included in the block list of the service., 'circuitry configured to2. The first wireless communication apparatus according to claim 1 , wherein:the circuitry is further configured to determine, based on the first user information included in the received first signal, whether to receive a second signal associated with at least one service of the plurality of services provided by the second wireless communication apparatus, andthe second signal is received from the second wireless communication apparatus.3. The first wireless communication apparatus according to claim 2 , wherein the circuitry is further ...

Wireless communication apparatus, communication system, wireless communication apparatus control method, and program

There is provided a wireless communication apparatus including: a communication unit configured to use wireless communication to transmit and receive data related to a service provided by at least one of the wireless communication apparatus and another wireless communication apparatus with other wireless communication apparatuses present within a designated range; and a control unit configured to associate service information for identifying the service with user information for identifying a user using a wireless communication apparatus that provides the service, and include and transmit the associated information in the data.

Control station for cordless telephone system

Communication terminal equipment

(57)【要約】 【目的】本発明は通信端末装置において、操作性に優れ た通信端末装置を実現できるようにする。 【構成】本体の外面に沿つた第１の方向及び該第１の方 向にほぼ直交する第２の方向に操作が可能な操作子（６ Ｊ）を設け、該操作子の第１の方向の操作に応答して複 数の項目のうちの１つにカーソルの位置を対応させて表 示し、操作子の第２の方向の操作に応答してカーソルが 位置する項目に関する情報を表示するようにしたことに より、１つの操作子による少ない操作で選択と確定を指 示することができ、かくして少ない操作子でありながら 操作性に優れた通信端末装置を実現することができる。

Communication terminal device and its control method

Radio communication method and system

A method and system for radio communication between at least one parent communication unit and a plurality of slave communication units. A slave communication unit transmits an automatic answer signal in response to an incomming call receipt signal transmitted from the parent communication unit. When one of the slave communication units makes a called-person's answer to the incomming call receipt signal, it transmits a called-person's answer signal. If interference occurs between the automatic and called-person's answer signals, the parent communication unit provides a command, causing the slave communication units to stop the automatic and called-person's answer signals and permits the slave communication unit which transmits the called-person's answer signal to communicate with the parent communication unit.

communication terminal

Communication terminal apparatus

Communication terminal apparatus

A communication terminal apparatus such as a portable telephone apparatus has a main body, a selection operation unit, an operation inputting unit, a display unit, and a controller. The main body has a speaker and a microphone. The selection operation unit is provided on the main body and selects one mode from a plurality of modes of the communication terminal apparatus. The control inputting unit is provided on the main body and changes functions based on the mode selected by the selection operation means. The display unit is provided on the main body and displays information required for selection operation or inputting operation by the selection operation unit and/or the operation inputting unit. The controller sets mode selected based on the input from the selection operation unit, and switches function of the operation input unit based on the input from the selection operation unit. The controller controls display operation of the display unit based on the input form the selection operation unit and/or the operation inputting unit.

Apparatus for and methods transmitting a signal responsive to a received signal

IN A TRANSMITTING AND RECEIVING APPARATUS SUITABLE FOR USE AS A DIGITAL CELLULAR TYPE MOBILE STATION, THE REFERENCE RECEIVING CARRIER FREQUENCY AND THE REFERENCE TRANSMITTING CARRIER FREQUENCY ARE DIFFERENT. SIGNALS ARE TRANSMITTED AND RECEIVED SUCH THAT AN OFFSET FREQUENCY OF A RECEIVED SIGNAL (11) OF AN ACTUAL RECEIVED CARRIER FREQUENCY RELATIVE TO THE REFERENCE RECEIVING CARRIER FREQUENCY (15) IS DETECTED AND MULTIPLIED (19) BY A SIGNAL OF THE REFERENCE TRANSMITTING CARRIER FREQUENCY, AND THE MULTIPLIED OUTPUT USED AS THE TRANSMITTED SIGNAL OF AN ACTUAL TRANSMITTED CARRIER FREQUENCY WHICH FOLLOWS THE ACTUAL RECEIVED CARRIER FREQUENCY. (FIGURE 1)

Transmitter-receiver with correction of the Doppler effect

Cordless telephone

A communication channel is established between a master station (2) and one of plural remote stations (1A,...1H) in a multichannel access (MCA) cordless telephone system. Access data is transmitted from the master station (2) to all of the remote stations (1A,...1H), at the same time, to designate a selected remote station as a representative station. The access data also includes calling data which seeks a response from that representative station. In the absence of a response to the calling data from the previously designated represen­tative station, the station identifying data is changed to designate a new remote station as the representative station. The foregoing process is repeated until a representative station responds to the calling data, whereupon the remote stations (1A,...1H) are polled, in sequence; and a communi­cation channel is established between the master station (2) and the particular polled station which replies to the polling operation.

User equipment, method for performing handover, base station, and radio communication system

A mobile station in a wireless communication network. The mobile station including a radio communication unit that communicates with a first base station via a plurality of component carriers, and a control unit that controls the radio communication unit to initiate a handover procedure to a second base station after receiving at least one handover command.

Method and apparatus for transmitting a signal with an offset which follows a received signal

A transmitting and receiving apparatus suitable for use as a digital cellular type mobile station. The reference reception carrier frequency and the reference transmission carrier frequency are different. Signals are transmitted and received such that an offset frequency of a received signal of an actual reception carrier frequency relative to the reference reception carrier frequency is detected and multiplied with a signal of the reference transmission carrier frequency, and the multiplied output used as the transmitted signal of an actual transmission carrier frequency which follows the actual reception carrier frequency.

Wireless communication device, communication system, method for controlling wireless communication device, and program

Radio communication method and system

A method and system for radio communication between at least one parent communication unit and a plurality of slave communication units. A slave communication unit transmits an automatic answer signal in response to an incoming call receipt signal transmitted from the parent communication unit. When one of the slave communication units makes a called-person's answer to the incoming call receipt signal, it transmits a called-person's answer signal. If interference occurs between the automatic and called-person's answer signals, the parent communication unit provides a command, causing the slave communication units to stop the automatic and called-person's answer signals and permits the slave communication unit which transmits the called-person's answer signal to communicate with the parent communication unit.

Communication terminal apparatus with pictorial presentation of the wanted subscriber

A communication terminal apparatus such as a portable telephone apparatus has a main body, a selection operation unit, an operation inputting unit, a display unit, and a controller. The main body has a speaker and a microphone. The selection operation unit is provided on the main body and selects one mode from a plurality of modes of the communication terminal apparatus. The control inputting unit is provided on the main body and changes functions based on the mode selected by the selection operation means. The display unit is provided on the main body and displays information required for selection operation or inputting operation by the selection operation unit and/or the operation inputting unit. The controller sets mode selected based on the input from the selection operation unit, and switches function of the operation input unit based on the input from the selection operation unit. The controller controls display operation of the display unit based on the input form the selection operation unit and/or the operation inputting unit.

Communication apparatus and automatic gain control method

【課題】指向性を利用した通信においてダイナミックレンジが大きなパケットを処理することが可能な通信装置、および自動利得制御方法を提供する。 【解決手段】第１周波数の搬送波により通信を行う第１通信部と、複数のアンテナを有し第１周波数の搬送波よりも指向性が強く伝搬損失が大きい第２周波数の搬送波により通信を行う第２通信部と、第１通信部が受信した信号を処理し信号を送信させる第１通信処理部と、第２通信部が受信した信号を処理し信号を送信させる第２通信処理部とを備え、第２通信処理部は、第１通信処理部から伝達される受信開始を示す情報に基づいて１つのパケット内に複数の送信ビームパターンが設定された第２の送信要求の開始位置を特定する同期部と、第２の送信要求に含まれる送信ビームパターンごとの第１自動利得制御設定値に基づいて自動利得制御を行う自動利得制御部とを備える通信装置が提供される。 【選択図】図１２

Communication terminal equipment

(57)【要約】 【目的】本発明は通信端末装置において、誤入力を減ら せる操作性の優れた通信端末装置を実現できるようにす る。 【構成】入力文字数が所定数までは表示文字を第１の大 きさで表示し、入力文字数が所定数を超えると表示文字 を第１の大きさより小さい第２の大きさで表示するよう にしたことにより、入力文字数が少ない間は大きな表示 文字で入力内容を確認しながら入力できるので誤入力を 減らすことができ、また入力文字数が多くなつた場合に も同一項目についての入力内容を１画面上で確認できる ので入力内容の把握を容易に行うことができ、かくして 誤入力を減らせる操作性の優れた通信端末装置を実現す ることができる。

Method for equalizing received burst signal

The present invention relates to an equalizing system in which an input signal is supplied to a series circuit of a plurality of delay means, the input signal and delayed output signals of the respective delay means are multiplied with coefficients and multiplied outputs are added to thereby produce an equalized output signal. In this equalizing system, the input signal is supplied to the series circuit of the plurality of delay means so that the input signal is transmitted in the positive direction within the series circuit so as to be sequentially delayed, the input signal is then transmitted in the reverse direction within the series circuit so as to be sequentially delayed, the input signal is transmitted again in the positive direction within the series circuit so as to be sequentially delayed, an amplitude error of the output equalized signal is detected, and coefficients multiplied with the delayed output signals of the respective delay means are calculated in response to the detected amplitude error so that the amplitude error is minimized.

Information processing device, communication system, information processing method, and program

Radio communication system, radio communication terminal, and method for participating in radio communication system

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

通信システム、並びに、通信装置および方法

(57)【要約】 【課題】 互いにサービスエリアが重複する複数の無線 通信システムにおいて、コストをかけずに、効率的にユ ーザのニーズに合わせた通信を容易に行う 【解決手段】 無線通信システム２の基地局２１、およ び、無線通信システム３の基地局３１の対応するセルが 互いに重複しているエリアにおいて、携帯電話機１が基 地局３１と無線通信を行っている間、基地局３１は、基 地局２１が携帯電話機１に供給する情報を取得し、携帯 電話機１に供給したり、携帯電話機１の代わりに応答し たりする。また、携帯電話機１は、基地局３１との無線 通信を一時停止し、基地局２１と直接無線通信を行うこ とができる。このとき、基地局３１は、通信相手から携 帯電話機１に供給されるデータを蓄積しておき、後で、 携帯電話機１に供給する等、様々な対応を行うことがで きる。

Information processing device, communication system, information processing method, and program