METHOD AND APPARATUS FOR RESELECTING CELL IN IDLE MODE BY TERMINAL SUPPORTING PUBLIC SAFETY SERVICE

Below, embodiments of the present invention detailed drawing objects with each other. The present invention also are described in related known function or configuration description is specifically the subject matter of the present invention unnecessarily uses the analogy that the description can be dispensed to each other. The terms function in the invention which carry terms as defined taking into account user, depending on intended or which said operator such as can be. Therefore its definition throughout the content based on the herein will been commanded.

Also, in embodiments of the present invention specifically described, OFDM-based wireless communication system, especially primary object to do anything but 3GPP E-a UTRAN standard, the circuit similar aspect technological background and other communication system in the form having the invention also relates to such an extent that it is in a range from a heavy little modification not applicable, this is the technical knowledge of possible decision with a splicing in the art will.

Advantage of the present invention and features, and an electronic component connected to the drawing appended with the achieving the embodiments detailed reference activitycopyright will carry. However the present invention may be a variety of different embodiments are described in which an limited to but can be embodied in the form of, only the embodiments of the present disclosure to the completely, this invention is in consultation with a knowledge of the confirming button to complete and has provided for transmitting the, the invention relates to construe defined by category only disclosed. The same references refer to the same components herein throughout.

At this time, also drawings present a process stream of computer program instructions be done by each block in and flow also drawing these may be understand it will rain. These computer program instructions may be a general purpose computer, special computer or other programmable data processing equipment can be mounted processor, computer or other programmable data processing of the instruction are performed by means of the processor performs a landscape (are) flow described functions produce the substrate. These computer program instructions to a particular computer or other programmable data processing equipment for implementing functions in a clocked manner to direct the available stored in the computer or computer readable memory passage formed, instruction are stored in a computer readable memory or computer available flow landscape (are) described function instruction means to produce articles of manufacture interfaces also disclosed. Computer program instructions are computer or other programmable data processing equipment is mounted on a passage formed, a computer or other programmable data processing equipment computer steps are carried out a series of operations on the computer or other programmable data processing equipment generating is performed in process flow landscape (are) performing instruction are described functions for carrying out steps also be disclosed.

Also, each block is (are) one or more specified logical functions for executing the executable instructions module comprising, a part of the segments or can exhibit. Further, in some examples referred to blocks replaced execution functions in this order beyond a predetermined time interval lapses generated by large substrate. For example, two blocks shown came substantially blocks or substantially simultaneous also be performed a second corresponding sometimes to other persons also be disclosed.

At this time, in the present embodiment used '- unit' means the term ASIC or FPGA hardware components and software such as, '- part' role is to has a plurality of hierarchies. However '- part' software or hardware is limited to the meanings endured. '- part' is addressable storage medium may be configured one or more of processors configured to reproducing disapproval. Thus, in one example '- part' is software components, object-oriented software components, class components and task components such as components, processes, functions, attributes, procedures, subroutine are, segments of program code, drivers, firmware, microcode, circuitry, data, databases, data structures, tables, arrays, and variables comprising the. Components '- part' function offered in smaller number of components and are '- part' are combined into or additional components '- part' can be further separated into. As well as, components and '- part' are in reproducing the multimedia card or security device may be configured to one or more CPU disapproval.

Figure 1 shows a MBMS service network structures of the LTE system also shown are disclosed.

According to also 1, MME (100, Mobility Management Entity) is responsible for MBMS session (session) and control, MCE (110, MBMS Coordination Entity) on M3 interface connected in the nanometer range. MCE (110) includes a base station belonging to the MCE (140, enhanced Node B (eNB) base station or the like can be mixed) responsible for radio resource to manage the allocation and, MBMS service admission control responsible for substrate. MBMS services also determines a modulation and coding level (modulation and coding scheme, MCS) MBMS session control has a plurality of hierarchies. MCE is physically separate logical node for managing resources of a wireless base station or can separate to each base station so that one base station master (master) slave (slave) is the remaining being the MCE is structure that is base station can be.

BM-a SC (120, Broadcast/Multicast Service Centre) is MBMS bearer (bearer) start to service to perform a service authorization, MBMS content quality of service scheduling transmission has a plurality of hierarchies. BM-a SC LTE network be capable to deliver a self broadcast content space content providers (160) linked with can be broadcast to deliver content. BM-a SC is MBMS-a GW (130, MBMS gateway) SCmb interface connected a control message transmission, content (user traffic) for transmission SGi provided mb interface connected thereto. MBMS-a GW (130) (service beginning and end) the MBMS session control executes, by using IP Multicast transmission to a base station delivers the content. The MME MBMS-a GW on session control message transmission Sm interface which are connected, for content delivery to a base station M1 interface connected thereto.

Base station (140) in the MCE receives information about the assigned radio resource scheduling in broadcast services MCE terminal (150, UE (user equipment), terminal (terminal), mobile terminal or the like can be mixed) allocation for transfer and performing transmission synchronized to the MBMS services. The base station for delivery of a control signal MCE M2 interface connected thereto. Terminal (150) is synchronized MBMS data receives a.

Figure 2 shows a MBMS service area of surface shown also are disclosed.

The MBSFN (Multimedia Broadcast multicast service Single Frequency Network) MBMS service area (MBMS service area, 200) for transmitting signals for (or less MBSFN transmission) can be composed a plurality of base stations performing network areas are disclosed.

MBSFN region (MBSFN Area, 210) (or, broadcast area information, less than two terms can be meta) is integrated into a plurality of cells for transmission MBSFN packets is stopped and, MBSFN area MBSFN transmission of cells in all synchronized disclosed.

MBSFN area reserved cell (MBSFN Area Reserved Cells, 220) all cells except using MBSFN transmission are disclosed. MBSFN area reserved cell (220) are not the 27.5 MBSFN transmission, transmitting a signal for other purposes but only limited MBSFN transmission assigned radio resource can be allowed transmit power.

Figure 3 shows a mapping is used for transmitting the downlink channel through the MBSFN also are disclosed.

As shown in Figure 3, MAC layer and a physical layer between the Multicast channel (Multicast Channel, MCH, 300) downlink transmission channel is reduced, the ues respond MCH physical channel physical Multicast channel (Physical Multicast Channel, PMCH, 310) and apparatus for pre with each other. Alternatively a specific terminal only for the transmission of a unicast data transmitting (Physical Downlink Shared Channel, PDSCH, 320) generally physical downlink common channel is measured for plural times.

Terminals for cell reselection in idle mode (measurement) measures such as under a has a plurality of hierarchies. In order to reduce the measuring terminal below such as rule received signals. More details of the new 3GPP TS 36. 304 can be consulting.

Srxlev - if serving cell (cell selection level value for RX, dB Q unit_Rxlevmeas - (Q_Rxlevmin + Q_{Rxlevminoffset} ) - Pcompensation provided Qoffset_Temp Limited thereto by) value S_IntraSearchP Squal greater than (cell selection for quantitative value, dB Q unit_{Qualmeas -} (Q_Qualmin + Q_{Qualminoffset} ) - Qoffset_Temp Limited thereto by) value S_IntraSearchQ If thereof can not greater than frequency measurement (intra-a frequency measurement).

- If the condition is satisfied if not, terminal must frequency measurement should be performed as follows.

- Terminal E-a UTRAN system information in frequency indicated by the other RAT (radio access technology) (inter-a RAT frequency) frequency of high priority acquired measured with respect to the rules below should be performed other.

- High priority over current frequency in frequency or other RAT E-a UTRAN for frequencies in the terminal must measurement has a plurality of hierarchies.

Current frequency priority over - that is either low in frequency or other RAT Srxlev > S E-a UTRAN for frequencies in the serving cell_{NonIntraSearchP} Squal > S satisfies_{NonIntraSearchQ} Performing measurements satisfies the control part may not disclosed. Otherwise terminal current at a high frequency in frequency or other RAT always has a priority that is either low E-a UTRAN measured frequency should be performed as follows.

Such terminal and performing measurements, if provided by system information block type 3 (SystemInformationBlockType 3) thresholdServingLowQ value, whether the current serving cell terminal camps (camping) through seconds 1 breaks down, the terminal selects a cell reselection procedure satisfies one or more cell below a plurality of hierarchies.

- E-a UTRAN or UTRAN FDD RAT Squal > Thresh of higher priority and having frequencies_{X, HighQ} Treselection conditions_RAT Met during, or UTRAN TDD, GERAN or CDMA1000 RAT Srxlev > Thresh of higher priority and having frequencies_{X, HighP} Treselection conditions_RAT Met during

Unless - if the condition is satisfied, having frequencies higher priority Srxlev > Thresh_{X, HighP} Treselection a_RAT During satisfies, whether the current serving cell terminal camps 1 seconds duration

At this time such as digital-to-analog (Reference Signal Received Power) for the peripheral cell of the serving cell RSRP E-a UTRAN frequency determined by comparing like suitable selects based on cells.

With a lower priority is viewed as the terminal for frequencies in frequency or other RAT E-a UTRAN cell under selected cell reselection procedure satisfies one or a plurality of hierarchies.

Squal < Thresh - serving cell_{Serving, LowQ} Satisfied, the frequency of the clock frequency or UTRAN FDD RAT Squal>Thresh E-a UTRAN with lower priority_{X, LowQ} Treselection a_RAT Met or serving cell during Squal < Thresh_{Serving, LowQ} Satisfied, having lower priority E-a UTRAN frequency or UTRAN TDD, GERAN, the frequency of the Srxlev > Thresh CDMA2000 RAT_{X, LowP} Treselection a_RAT Met during

Unless - if the condition is satisfied, serving cell Srxlev < Thresh_{Serving, LowP} Satisfied with the lower priority and having frequencies Srxlev > Thresh_{X, LowP} Treselection a_RAT During satisfies, whether the current serving cell terminal camps 1 minutes duration

The reselection process carried out in the high-priority from frequency to frequency of lower priority.

Figure 4 shows a terminal base station transferring the process priority information also shown are disclosed. Different E-a UTRAN frequency or other RAT of frequencies to system information (system information) or RRC connection release (RRCConnectionRelease) terminal priority information transferred by a message. In Figure 4 is shown using a disconnect message RRC etc. priority delivery process.

Base station (400) terminal (410) and it is big neck mote [tu[tu] mode (connected mode) automatically change state, the base station RRC a disconnect message (420) components in a terminal. RRC connection release message priority information for cell reselection (CellReselectionPriority, 430) multiple myelomas are included. The carrier frequency (absolute) absolute priority information priority information, cell reselection process are used. Priority information which may have a value of 0 to 7, number all high priority indication for. RRC connection release message terminal are transitioned to the idle mode.

A eMBMS service it is big neck mote [tu[tu] PS provided LTE terminal particle size when idle mode, it does not provide a service eMBMS different frequency cell reselection process when a selection output control when the display member can be selected from the public safety service, PS-a LTE terminal which is not selected to different frequency method and apparatus the spirit. At this time PS provided LTE terminal from the network current public safety service support type terminal and public safety service can be adapted to be called from terminal, current public safety service concept can be understood to support type-terminal from the network only. PS provided LTE below can be mixed and a terminal.

A first network terminal and a common terminal is formed on the described Figures PS provided LTE. Below example message with a base station transceiver among terminals can be disclosed.

In one embodiment, upon initial connection terminal (UE capability) to PS-a LTE terminal capability information that is included PS provided LTE terminal inputs the network by say PS provided LTE terminal. The ability of the terminal from a terminal is also this procedure when an inquiry message (UECapabilityEnquiry) also include transmitting information that the answer can be PS provided LTE terminal. This method preferably terminal not general terminal can be used by considering PS provided LTE terminal. UE context (context) is included in the terminal capability thereof can.

The other example, initial connection or eMBMS service is started eMBMS PS provided LTE terminal requesting a service indicator can be resource allocated, MBNS related entity (entity) network which receives an indicator can be public safety through into a cylindrical receiving service. This method preferably current eMBMS service using a transistor into a cylindrical PS provided LTE service can be used.

In another example, network is separate eMBMS service receiving check message whether the charging data, public safety service using service eMBMS received at a terminal can be agents for this response message transmission, the network response message can be into a cylindrical receiving a communications service. The confirm message and response message include eMBMS counting request message (eMBMS counting request message) and eMBMS (eMBMS counting response message) can be counting response message using, new broadcast (broadcase) can be orderly. This method preferably current eMBMS service using a transistor into a cylindrical PS provided LTE service can be used.

According to said method network is divided into PS-a LTE terminal, it does not provide a service by using different frequency below eMBMS cell reselection process can be selected so as not to.

Figure 5 shows a different frequency and also terminal which is not selected to show a first example surface are disclosed.

According to also 5, base station (410) is PS-a LTE terminal (400) to RRC connection release message (500) eMBMS service when current frequency by correctly setting the priority of the highest priority information (510) can be. At this time idle mode terminals described cell reselection based on priority information transmitted according to select accessible cells, the highest priority based on priority information when select either to a rotation force is equal to the current frequency.

Figure 6 shows a different frequency and also terminal which is not selected to show a second example surface are disclosed.

According to also 6, base station (410) is PS-a LTE terminal (400) to RRC connection release mash whether transmission (600) does not contain frequency when priority information of transmitted (610) can be. At this time PS provided LTE terminal RRC a disconnect message method except included disregarding the priority information of the frequencies of the transmitting frequency or current, to determine whether the highest frequency thereof can set current.

Figure 7 shows a different frequency and also terminal which is not selected to show the third example surface are disclosed.

According to also 7, base station (410) is PS-a LTE terminal (400) to RRC connection release message (700) but when priority information, terminal thereof can not considering the same (710). At this time idle mode of disregarding the current priority of the frequencies of the PS-a LTE terminal or, current frequency to determine whether the highest priority thereof can set.

The method through terminal in idle mode when transitioning PS provided LTE it is big neck mote [tu[tu] PS provided LTE eMBMS service is not supported judges not to frequency reselection can be.

Figure 8 shows a flow are also shown flow are disclosed.

Also according to 8, the base station transmitting a disconnect message RRC to terminal at the point of call (800) as follows. After the base station and a terminal capable terminal PS provided LTE service S205 (810) as follows. PS provided LTE service were not capable terminal, performing cell reselection priority by applying a reset terminal (840) as follows. At this time the base station transmits a disconnect message frequency can be priority information of RRC. If PS provided LTE service terminal can support if, terminal receives eMBMS service to determine whether (820) to each other. If eMBMS receives service if not, performing cell reselection priority by applying a reset terminal (840) as follows. If it judges the eMBMS terminal, the base station and a terminal for maintaining eMBMS service applying control (830) to each other. This comprises a transceiver scheme 1 eMBMS service frequency is high priority applying first example (850) and, scheme 2 is not to send a disconnect message frequency RRC priority information of second example (860) and, scheme 3 RRC a disconnect message frequency including priority information of even the same third one example PS provided LTE terminal to ignore (870) are disclosed.

Figure 9 shows a datum surface also illustrates one example PS provided LTE terminal are disclosed.

According to 9 also, initial connection situation (900) UE context in the network after connecting terminal to determine whether the audio information indicating about PS provided LTE (910) as follows. After connecting terminal to a user if not included in the general terminal (910) and, after connecting terminal to a user terminal to be included PS provided LTE (930) as follows.

Figure 10 shows a PS-a LTE terminal according to an other example also illustrates the surface are disclosed.

According to 10 also, terminal in connection state (1000) eMBMS service request in the network receives instructions for the heater (1010) and, PS-a LTE service received by a receiving terminal has not been judged that no (1020) and, if terminal judges that the received PS provided LTE (1030) to each other.

Figure 11 shows a PS-a LTE terminal determining terminal receiving a communications service during PS provided LTE also illustrates one example surface are disclosed.

According to also 11, initial connection situation (1100) after connecting terminal in the network informing indicator to determine whether or not included in about PS provided LTE UE context (1110) to each other. Otherwise network is notified to a user general terminal after connecting terminal (1120) as follows. If so network is notified to a user terminal after connecting terminal PS provided LTE 2000. After the network terminal for the heater receives designation a net identifier eMBMS service request (1140) each other. Network receives designation hadn't network is received by a service system using current terminal eMBMS PS provided LTE service judged that no (1150) and, if the network service system using current terminal receives designation eMBMS PS provided LTE judged that a receiving services (1160) each other.

Figure 12 shows a device to carry out the method shown in block can be therefore are disclosed.

Terminal (1200) control section (1210) and transmitting (1220) and, base station transmitting signal and a second Zener diode, for differentiating the general terminal when the network control unit PS provided LTE terminal terminal capability information including information that the terminal PS provided LTE base station or otherwise, requesting a service indicator base station or otherwise eMBMS, eMBMS confirm message receives corresponding to the response message to the transmitting base station controller over a can be control. The RRC connection release priority information from a base station comprising the transmitting control can receive messages.

Also the control unit terminal is checked whether idle mode, idle mode receiving terminal when cell reselection procedure based on priority information corresponding to the substrate. At this time displayed frequency may have highest priority, or RRC connection message or non-priority information, even if the priority of the current frequency or current frequency included reselects the highest according to cell reselection procedure corresponding to the substrate.

Base station (1230) control section (1250) and transmitting (1240) and, terminal transmitting signal and a second Zener diode, for differentiating the general terminal when the network control unit PS provided LTE terminal information received from the terminal or terminal capability information that PS-a LTE terminal, requesting a service indicator received from the terminal or eMBMS, eMBMS confirm message to transmit corresponding to the response message received from the transmitting terminal to control can. The terminal RRC connection release priority information to send a message to the transmitting control can.

RRC connection release message frequency control unit also displayed the highest priority according to priority information included therein for generating RRC a disconnect message is sent to the terminal or, RRC do not be disconnect message priority information.