TW200814611A - Method of selecting operating frequency for user equipment in a wireless communications system and related apparatus - Google Patents

Abstract

In order to prevent a preferred frequency providing Multimedia Broadcast Multicast Service, called MBMS hereinafter, services, from getting congestion, the present invention provides a method of selecting an operating frequency for the UE in a wireless communications system. The method includes switching the operating frequency from a first frequency to a second frequency when the UE activating to receive a MBMS service of a MBMS service group; and switching the operating frequency from the second frequency to the first frequency when the UE determines not to receive any MBMS services of the MBMS service group.

Description

200814611 IX. Description of the Invention: [Technical Field] The present invention relates to a method for selecting an operating frequency of a wireless communication system and a phase thereof, and more particularly to selecting a multimedia broadcast in a user terminal of a wireless communication system A method of operating frequency of a multicast service and related devices. [Prior Art] • The third-generation mobile communication system adopts the wireless access method of wideband code division multiple access (WCDMA) to provide high spectrum utilization efficiency and far-reaching coverage. And high-quality, high-speed multimedia data transmission can meet a variety of different Q〇S service requirements, provide flexible and diversified two-way transmission services, and provide better communication quality, effectively reducing communication interruption rate. In order to enhance the multimedia functions of the third generation mobile communication system, the 3rd Generation Partnership Project (3GPP) has provided a multimedia broadcast and multicast service (Multimedia Br〇adcast Multicast Service). , MBMS). The Multimedia Broadcasting Group Service is a point-to-multipoint data transmission service built on the original Global System for Mobile Communications (Universal).

The network architecture of the Mobile Telecommunications System (UMTS) is based on Internet Protocol (IP) packets, allowing a single data source to simultaneously deliver the same service to multiple clients.

• Multimedia and broadcast services provide broadcast and multicast delivery modes based on the communication protocol specifications developed by the 3rd Generation Mobile Communications Alliance (MBMS 200814611)

Broadcast/Multicast Delivery Mode). When the UE wants to use the multimedia broadcast and multicast service, it needs to first subscribe to a Broadcast Multicast Service Center (BM-SC) to establish a service agreement between the two (Service).

Agreement). Different service modes provide different service agreement phases (Seryice ProvisionPhase), where the service delivery phase of the broadcast delivery mode includes Service announcement, Session Start, multimedia broadcast, and MBMS notification. , Data Transfer _ and Stop (Session Si0P); and the service protocol phase of the multicast transmission mode includes Prescription, Service Announcement, Join (Joinmg), Start (sessi〇n Start) ), multimedia broadcast and multicast service notification (MBMS notification), data transfer (DataTransfer), stop (Sessi〇n

Stop) and Leaving; in order to provide customized services, the multicast transmission mode adds tea and _ two phases designed for the user side. When the user enters the participation phase, the system can authenticate the client. Actions such as billing records. The above-mentioned services should be familiar to the industry during the Spring Festival and will not be repeated here. 3 - Aspects - As far as the knowledge is known to those who are familiar with the knowledge, in the perspective of the control of the source of the new source, the data transfer channel, whether for the user data transmission exchange, or for wireless The control signal transmission exchange of the resource control layer is defined by the concept of "Radio (RB). The so-called radio bearer stands .m ^ ^ people 7 κ war, in the user side contains a one-way or '--the upper and lower logic logic Wei Chuan change channel; in Peng Lai contains - one-way, or - strong The downstream logical data is transferred to the exchange channel. For example, the wireless access network terminal 6 200814611 ' (UTRAN) can transmit the multimedia multicast service control signaling to the UE by using the Wei radio bearer; the UE can stop receiving the multimedia broadcast by releasing the radio bearer and Group broadcast service. In addition, in the radio resource control specification, the radio resource control state can be divided into a non-connected and connected mode, the unconnected mode includes an idle () mode, and the connected mode includes a cell pass (CELL-pcH), _ spare line The ancient main book area paging (URA_PCH), - cell forward access (CELL H) and cell exclusive (CELL_DCH) status. —) and, " Multimedia broadcast and multicast services include broadcast and multicast services (Broadcast/Office Ist Service Type). In general, there is no charge for broadcasting services, so when the subscriber receives the broadcast service, it does not need to participate in the (J〇ining) service protocol, and the wireless access network uses the broadcast transmission mode to deliver the service through the point-to-multipoint radio bearer. News. On the other hand, for the multicast service, the wireless access network decides to use the broadcast and multicast transmission mode. In the multicast broadcast mode, the user enters the service agreement to perform the charging function; in the broadcast transmission mode, the user does not need to participate in the service agreement. Then, the wireless access network learns the number of clients that can receive the multimedia broadcast and the multicast service through a calling procedure (CountingProcedure) to decide to use the point-to-point or point-to-multipoint radio bearer to deliver the service information. In the following, the transmission by the wireless access network using the point-to-point radio bearer may be referred to as a point-to-point transmission mode (p〇int_t〇_p〇int...,

TransitMode); the use of a point-to-multipoint transmission mode is called a point-to-multipoint transfer mode. 7 200814611 / , The a-line access network contains two or more carrier frequencies, /, used to provide non-ugly lion services, and achieve good resource utilization through proper user-side health of the carrier frequency . Therefore, based on the simplified system control and the cut source, the face-to-face 骑 衫 亲 敝 敝 集中 group focus on a carrier. When the user wants to receive the multi-title broadcast and multicast service, the wireless access will send the media broadcast and the multicast service correction service information (delete the viewersVICESINFORMATI〇n) to the user, and the message will be sent to the user. The information includes a multimedia broadcast and multicast service information (MBMS_Pref_i frequency information) component, which is used to notify the user to convert the operating frequency to the specified frequency (extinguish n*edFrcqu(10)yLaye〇, to Weixiang ship broadcast and multicast service. Then, after the frequency conversion, the UE stores the previous operating frequency.

For the idle mode 'cell paging, wireless registration area paging or cell forward access point, in the point-to-multipoint transmission mode, when the -multicast broadcast and multicast service proceeds to the stop service agreement phase, The wireless connection will transmit the multimedia mega-group service correction service Wei message, which includes the client-side behavior (10) MSrequireduE_) component of the multimedia broadcast and multicast service. By setting the client-side behavior component of the multimedia broadcast and multicast service requirements as "S_RB", the wireless access network informs the user to stop the service protocol and the user releases the phase_-point-to-multipoint wireless load to stop Receive multimedia and multicast services. In addition, if the multimedia broadcast and group broadcast service repair service includes both the MBMS dispersion indicator and the MBMS dispersion indicator, 200814611 - after the heavy storage. Chaos, accessing the network by the scales Stopping the multimedia ^1 broadcast and the multicast service can transfer the client to the specified frequency, causing the network g to be blocked due to the excessive number of users in the specified frequency. The other 2' wireless access network also transmits periodically - the 1V IBMS GENERAL INFORMATION message informs the client to inform the user of the current usage of the specified frequency. If the message contains _ multimedia broadcast and multicast service specified frequency service restriction information (MBMS PL Service)

Restriction Information) means that the wireless access network will not provide any non-multi-carrier and service (nGn_MBMS Seryiee) within the specified frequency, that is, the specified frequency is currently in the congestion state; conversely, if the sub-network If the message does not exist in the message, it means that the specified frequency still has redundant resources. Therefore, in addition to the multimedia broadcast and multicast service, the wireless access network will provide non-multimedia broadcast and multicast services within the specified frequency. Such as voice call service. 11 In order to enhance the application of Mobile TV, the 3rd Generation Mobile Communications Alliance introduces a multimedia broadcast and multicast service selected service (MBMS Selected Services) in the RRC layer, which is a multimedia broadcast and multicast service. The sub-service set of the broadcast service included in the service (MBMS-ACTIVATED-SERVICES) variable is used to inform the wireless access network which broadcast services have been selected by the client. The service has been selected through the multimedia broadcast and multicast service. The wireless access network can inform the user of the specific broadcast service information, such as the start time of the service program or the length of the program, etc. for the needs of the client. In addition, the multimedia broadcasting and group broadcasting services defined by the 3rd Generation Mobile Communications Alliance 200814611 have selected services, especially the mobile TV service, which should be connected to the (four) state. This document does not have a wireless access network to notify the user to stop the service agreement phase, but the user decides to stop receiving the parent. Furthermore, according to the radio resource control specification established by the 3rd Generation Action Rail Alliance, in the point-to-multipoint transmission mode, for idle mode <, fine lining, wireless registration area paging or cell forward access state At the user end, when the user terminal receives the multimedia broadcast and the multicast service by itself, it only needs to release the relevant one-to-many _ point unloaded bearer, and does not consider the action of turning the operating frequency. As a result, even if the user expects to touch any of the local media, the service will continue to stay within the specified frequency of providing multimedia broadcast and multicast services. It can be seen from the above that the multimedia broadcast and group broadcast service has selected the service only by the user terminal to terminate the pure, and after stopping receiving the service, the user stops at the original set frequency. In addition, with the newly added client receiving the service, the specified frequency 10 I can cause network congestion due to the excessive number of users. In addition, if the specified frequency is ’ 'No __ way, new non-multimedia broadcast and multicast services will not be available, such as MobileTerminatedCall. For clients that no longer receive multicast and multicast services, continuing to operate at the specified frequency will miss the opportunity to receive non-multimedia broadcast and multicast services. [Summary of the Invention]. Accordingly, the present invention provides a method for selecting one of the subscribers of a wireless communication system and its associated apparatus to avoid congestion at the frequency used to provide multimedia broadcasts and group 200814611 broadcast services. The present invention is disclosed for use in a wireless communication operation. When a fine broadcast and group broadcast service is used, the frequency of operation is determined by the first frequency = a first frequency, and the frequency of the multi-long service _& The second selection is switched to the first selection, and the frequency is used to correctly provide a frequency storage device for providing multimedia broadcast and multicast services. The clothing includes a control circuit, a central processing unit, and a circuit for implementing the communication I. Continued ==_路中, 彳 蝴 蝴 转 转 ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ Fat (4) and when it is decided to no longer receive the multimedia service group - the first group broadcast service, the operating frequency is switched from the second frequency to the other month, the type used for the wireless communication system The method for selecting the frequency in the terminal selects the method, and when the multimedia broadcast and the group broadcast service of the multimedia service group 200814611 is started to be received, the operation frequency is switched from the -first frequency to the second turn; (10) And playing back any multimedia and multicast service of the multi-pronged scale group and the service status associated with the second frequency is determined to be 窭基#', the operation is freshly switched from the second frequency to the first frequency.柄 明 另 另 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Opportunities for broadcast and group broadcast services. The communication device includes a control circuit, a central processing unit and a storage device. The control electric corrections come true _ job (four) miscellaneous. The Finance Department is located in the control system to execute the code to control the control circuit. The storage device is disposed in the control circuit and is connected to the central processing unit for storing the code. Wherein the miscellaneous code includes: when the multimedia broadcast and the multicast service of one of the multimedia service groups is started to be received, the operation frequency is switched from a first frequency to a second frequency, and the multimedia service is decided not to be received. When any of the multimedia broadcast and multicast services of the group and the service status associated with the second frequency is determined to be Quebec, the operating frequency is switched from the second frequency to the first frequency. [Embodiment] FIG. 1 is a first block diagram showing a functional block diagram of a wireless communication device 1G0. For the sake of simplicity, the first picture is only one of the green communication devices, one input device, one output device 104, one control circuit 106, - central processing n 108, - storage device - (10), - code 112 and - the transceiver is called. In the wireless communication device, the control circuit 12 200814611 path 106 executes the code 112 stored in the storage device 11 through the central processing unit 108, thereby controlling the operation of the wireless communication device 100, and receiving through the input device 1〇2 (such as a keyboard). The signal input by the user, or the output device, such as a screen, a bar, etc., outputs a signal such as a face, a sound, and the like. The transceiver 114 is configured to receive or transmit a wireless signal, transmit the received signal to the control circuit 106, or output the generated signal by the control circuit 106 in a radio manner. In other words, in the framework of the communication protocol, the transceiver state 114 can be regarded as part of the first layer, and the control circuit 1〇6 is used to function as the second layer and the third layer. Preferably, the wireless communication device 1 is used in a third generation mobile communication system. The eye continues to refer to FIG. 2, which is a schematic diagram of the code 112 in FIG. The code 112 includes an application layer 2, a third layer 2, and a second layer 206 connected to a first layer 198. A radio resource control unit 222 is located at the third layer 202 for controlling the first layer 198 and the second layer 206, and performing peer-to-peer communication with a wireless access network. In addition, the RRC control unit 222 can change the radio resource control state of the wireless communication device 100, which is switched to idle (Idle), cell paging (CELL_pCH), and wireless fan zone paging (URAJPCH) according to network system requirements or communication environment changes. ), between the cell forward access (CELL-FACH) or cell-specific (CELL-DCH) state. For multimedia broadcast and multicast services, the wireless access network can form a radio resource control message (RRCMessage) and a component (Information Element, positive), and a point-to-multipoint radio bearer (Point-to-Multipoint Radio Bearer) I» 13 200814611 RB) 'Transfer information about the service or control signaling to the wireless communication device 1〇〇. In the idle state, the cell paging, the local registration area paging or the cell forward access state, when the private layer 2 〇〇, ', ς y 媒体 media broadcast and the group broadcast service spear service are applied, the radio resource control unit 222 The active release related radio bears a point-to-multipoint radio bearer to divide the media broadcast and the multicast service (4). In this case, the embodiment of the present invention provides an operating frequency selection code 22〇 in the code 112 for modifying the selection of the operating frequency after the user actively stops the multi-ship broadcasting and the group broadcasting service.

^ to avoid the frequency of service generation. Please refer to Figure 3, which is a reduction/flow 3 of the present invention. The process 3G is used in the wireless communication system - the UE selects the frequency, which can be compiled into the operating frequency selection code 220. The method includes the following steps: • Step 302: Start receiving a multi-day service group In a multimedia broadcast and broadcast service, the frequency of the selection is changed from a first frequency to a second frequency. Step Outline: When determining to receive any multimedia of the multimedia service group, ^ and the multicast service, the operation scale is determined by the second frequency as the first frequency. Step 306: End. According to the process 30, the embodiment of the present invention _ group merchant. More than a ton of tons; material media service services, and each - multimedia broadcast and annihilation media broadcast and group broadcast service for the broadcast service (Broadcast Type) 200814611 or multicast service (Multi (10) Type) 'or system - multimedia broadcast and The multicast service has selected the service (MBMS Selected Services). In this case, the UE can receive one or more multimedia broadcast and multicast services from the multimedia service group. The user terminal operates at the first frequency before initiating the reception of the multimedia broadcast and the multicast service. = When the client (10) Wei multimedia broadcast and multicast service, the button operation frequency is switched from a first frequency to a second frequency' and the first frequency is stored. At the user end, the mobile terminal is actively stopped to receive any one-to-many radio bearer associated with the prison. In addition, when the user terminal mosquito no longer receives the multimedia broadcast and group broadcast service of the multimedia service group, the operating frequency is switched by the second frequency, the first frequency. When the UE hops out of the second frequency, it means that the UE no longer occupies the radio resource of the second frequency, and the service radio resource is sent to other UEs. Therefore, the invention is audible and no longer accepts the user of any media broadcast and multicast service to stay at the second frequency, resulting in an increase in the number of users, thereby preventing the congestion of the first rate. Please refer to FIG. 4, which is a flow chart of the process of the embodiment of the present invention. The production 40 is used for - the wireless communication system - the user selects - the operating frequency, and the basin can be compiled into the operating frequency selection code 22, and includes the following steps: Step 400: Start. Step 402: When the mobile reception group - the multimedia service group - the multimedia broadcast and the group service, the operation frequency is cut by the u rate - the second frequency. Step 4〇4: The mosquitoes no longer receive the responsibility of the multimedia service group—Multimedia Wide 15 200814611 Jane Service and Fine_Second Fresh—When the service status is judged to be a wife, the operating frequency is determined by the second frequency Switch to the first frequency. Step 406 · End. , «Yue 4G, the invention of the invention, the second line of the media service group to the user. The multimedia service group includes at least one multimedia broadcast and multicast # service, and each multimedia II broadcast and multicast service is a broadcast service (Br〇adcastType) or a multicast service (MulticastType), or a multimedia broadcast and group Broadcast service has selected services (MBMS Selected Services). In this case, the UE can receive one or more multimedia broadcast and multicast services from the multimedia service group. During the operation of the second frequency, the UE can know the current usage of the second frequency by periodically receiving a multimedia broadcast and MBMS GENERAL INFORMATION message. If the multimedia broadcast and multicast service general information φ message includes a multimedia broadcast and multicast service specified MBMS Service Restriction Information component, the service status of the second frequency is determined to be congestion, and the second time The frequency does not provide new non-multimedia broadcast and multicast services; conversely, if the message does not contain the component, it indicates that the second frequency still has redundant resources, and the user can perform new non-transmission through the second frequency. Multimedia broadcast and multicast service, such as mobile terminal call (Mobile Terminated call). Therefore, according to the process 40, before starting to receive the multimedia broadcast and the multicast service, the user terminal operates at the first frequency. When the user starts receiving Multimedia Broadcasting and Group Broadcasting 16 200814611 Service, first operate the phase #i rate. Active on the user side: 2: frequency switch to a second frequency, and store any selected multimedia broadcasts and groups for the broadcast service No longer (4) - 阙 multi-point scale 17 domain. In addition, in the decision of the conflict B, the broadcast and the broadcast service material frequency of the second service status was judged Breaking into two 'users' switching the operating frequency from the second frequency to the first frequency. Such a "snap = no longer accept any user - multimedia broadcast and multicast service, if the service frequency of the t-th frequency In the embodiment of the present invention, the user is required to move to the first frequency. Thus, the user can avoid the missed reception of non-multimedia broadcast and multicast services. 2, it is known that when the user-side stomach active non-dedicated radio resource control state of the non-dedicated radio resource control state, the multimedia broadcast and the multicast service (such as the multimedia broadcast and the multicast service have selected services), the user only releases the relevant point. For the multi-point radio bearer, the sub-standard operation operates on the service frequency. Compared with the prior art, the implementation of the present invention provides two options. One is that the user decides not to receive any multimedia broadcast and multicast service. When the user decides to stop receiving any multimedia lining and group shipping services and the service is in the same condition, the service frequency is removed. Therefore, the present issuance. The embodiment can avoid the congestion of the service frequency due to the excessive number of users, and also avoid the opportunity for the user to miss receiving the non-multimedia broadcast and the multicast service. The above description is only a preferred embodiment of the present invention, and the patent application scope according to the present invention The equal changes and modifications made should be within the scope of the present invention. 17 200814611 [Simple description of the diagram] Figure 1 is a functional block diagram of a wireless communication device. Figure 2 is a schematic diagram of the code in Figure 1. Figure 3 is a flow chart of the process of the embodiment of the present invention. Figure 4 is a flow chart of the process of the embodiment of the present invention.

[Main component symbol description] 100 mobile communication device 102 input device 104 output device 106 control circuit 108 central processing unit 110 storage device 112 code 114 transceiver 200 application layer 202 third layer 206 second layer 198 first layer 220 operation Frequency Selection Code 222 Radio Resource Control Unit 30, 40 Flow 18 200814611 300, 302, 304, 306, 400, 402, 404, 406 Step 19

Claims (1)

200814611 X. Application for Patent Park: L, a kind of user-side method for wireless communication system, including: Selecting a frequency of operation in the startup--Cong Cong Service Chizhi b#, ^ The multicast service and the (four) frequency are switched from the first frequency to the second frequency; the Φ is used in the connected multimedia service group - the multi-_ and the group spear, and the operating frequency is switched from the second frequency to The first frequency. 2. If the requester looks for it, it is purely included in the Wei Wei good media broadcast and group broadcast service, releasing a number of point-to-multipoint radio bearers (p_t_mRB), The plurality of point-to-multipoint radio bearers are corresponding to the multimedia broadcast and multicast service. The method of claim 1, wherein the multimedia broadcast and multicast service is a broadcast type (Broadcast Type). The method of claim 1, wherein the multimedia broadcast and multicast service is a multimedia broadcast and multicast service selected service (MBMS Selected Services). The method of claim 1, wherein the multimedia The method of claim 1, wherein the client operates in an idle mode (Idle) as described in claim 1. The method, wherein the client operates in a cell paging (CELL-PCH) state. The method of claim 1, wherein the client operates in a radio registration area paging (URAJPCH) state. The method of claim 1, wherein the client operates in a cell-to-cell access (CELL-FACH) state, such as the method of claim i, wherein the wireless communication system is a third-generation mobile communication system. A communication device for a wireless communication system for correctly selecting a frequency support condition of a 1='(four)valve_frequency_frequency service, the communication device including a control circuit, when implementing The central processing n is provided in the (four) circuit for executing the control circuit; and the Pegasus; - the storage device 'the miscellaneous miscellaneous miscellaneous miscellaneously stores the code; wherein the code includes有·央处理心^ 21 2008 When the 14611 decides to no longer receive any of the multimedia service groups, the operating frequency is determined by the second frequency. The multimedia broadcast and the frequency are switched to the first 12. When receiving the multimedia broadcast and multicast service, release a plurality of Poinfto-Multipoint Radio Bearers (p+mRBs), and the plurality of point-to-multipoint radio bearers correspond to the multimedia broadcast and the group Broadcast service. The communication device according to claim 11, wherein the multimedia broadcast and multicast service is a broadcast service (Broadcast Type). The communication device of claim 11, wherein the multimedia broadcast and multicast service is a multimedia broadcast and multicast service selected service (MBMS Selected Services). The multimedia broadcast and multicast service is a multimedia broadcast and multicast service (Multicast Type). The communication device described in claim 11 operates in an idle mode. 17. The communication device of claim 11 which operates in a cell page (CELLJPCH) state. 18. The communication device of claim 11 which operates in a wireless registration area paging (URA-PCH) state. 19. The communication device of claim 11, which operates in a cell forward access (CELL-FACH) state. 20. The communication device of claim 11, wherein the wireless communication system is a third generation mobile communication system. 21· - A method for selecting a - operating frequency in a wireless communication system - including: when starting a multi-ship service group - a multimedia broadcast service, 'this frequency of operation is one When the first frequency is switched to and the decision is made to stop the service and the _%^-(4) body broadcast and group broadcast, the age t, __ is the frequency of the third order, the number is compiled by the second The frequency is switched to the first frequency. The method of claim 21, further comprising releasing a plurality of point-to-multipoint radio bearers (Point-to-Multipoint Radio Bearers, pt-mRB) when the receiving of the multimedia broadcast and the multicast service is stopped. And the plurality of peer-to-multipoint radio bearers correspond to the multimedia broadcast and multicast service. The method of claim 21, wherein the MBMS GENERAL INFORMATION message includes a multimedia broadcast and multicast service specified MBMS PL Service Restriction Information component. At this time, the service status related to the specified frequency is judged as congestion. The method of claim 21, wherein the multimedia broadcast and multicast service is a broadcast type (Broadcast Type). The method of claim 21, wherein the multimedia broadcast and multicast service is a multimedia broadcast and multicast service selected service (MBMS Selected Services), wherein the method of claim 21, wherein The multimedia broadcast and group broadcast service is a Multicast Type. The method of claim 21, wherein the client operates in an idle (1 out) mode. The method of claim 21, wherein the client operates in a cell paging (CELL-PCH) state. The method of claim 21, wherein the client operates in a wireless registration area paging (URA-PCH) state. The method of claim 21, wherein the client operates in a cell forward access (CELL_FACH) state. The method of claim 21, wherein the wireless communication system is a third generation mobile communication system. 32. A communication device for a wireless communication system for correctly selecting an operating frequency to avoid congestion at frequencies used to provide multimedia broadcast and multicast services, and to avoid missed reception of non-multimedia broadcast and multicast services Opportunity, the communication device comprises: - a control circuit for implementing the function of the communication device; - a central processing H' is provided in the control circuit for performing - the control circuit; and a storage device is provided m _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The operating frequency is determined by the rate; and the first frequency is switched to a second frequency; the first broadcast and the multicast service are received, and the service state is determined to be Wei time. And switching the operating frequency from the second frequency to the first frequency. • 33. The communication device of claim 32, wherein the code further comprises releasing a plurality of point-to-multipoint radio bearers when the multimedia broadcast and the multicast service are stopped (P〇int-t〇- MUltiP〇intRadi〇Bearer, p_t_mRB), the plurality of point-to-multipoint radio bearers corresponding to the multimedia broadcast and multicast service 0. 34. The communication device according to claim 32, wherein the code is further included in a multimedia broadcast And when the MBMS GENERAL INFORMATION message includes a multimedia broadcast and multicast service specified MBMS PL Service Restriction Information component, the service status related to the specified frequency is determined as Congestion. 35. The communication device of claim 32, wherein the multimedia broadcast and multicast service is a broadcast type (Broadcast Type). The communication device of claim 32, wherein the multimedia broadcast and multicast service is a multimedia broadcast and multicast service selected service (MBMS Selected Services). 37. The communication device according to claim 32 The multimedia broadcast and multicast service is a multicast type (Multicast Type) 〇 φ 38. The communication device of claim 32, which operates in an Idle mode. 39. The communication device of claim 32, which operates in a cell paging (CELLJPCH) state. 40. The communication device of claim 32, which operates in a wireless registration area paging (URA-PCH) state. The communication device of claim 32, which operates in a cell forward access (CELLJFACH) state. 42. The communication device of claim 32, wherein the wireless communication system is a third generation mobile communication system. 27