KR20060090134A - Radio communication system and method for providing mbms service - Google Patents

Abstract

According to the present invention, when a terminal that has set up a dedicated channel in an SRNC moves and establishes a connection with an RNC capable of providing MBMS service, the mobile RNC informs the terminal of whether the MBMS service is available, and the terminal provides corresponding information. The present invention provides a wireless communication system and method for broadcast and multicast services that can select a desired service (previous service or MBMS service) according to its own state. Accordingly, the present invention can solve the problem that the conventional terminal does not receive the information about the desired service by providing information on a new service to the terminal that cannot receive both dedicated channels (lack of capacity). .

MBMS, SRNC, DRNC, Serviceability Information, Attach

Description

RADIO COMMUNICATION SYSTEM AND METHOD FOR PROVIDING MBMS SERVICE}

1 is a view showing a network structure of a UMTS system to which the prior art and the present invention is applied.

2 is a diagram illustrating a connection structure between a UTRAN and a terminal in a UMTS network;

3 is a diagram illustrating a RRC state transition diagram of a terminal.

4 is a diagram illustrating an example in which a UMTS network provides a specific MBMS service to a UE using a multicast mode.

5 is a diagram illustrating an MBMS attach process.

6 is a flowchart illustrating a signaling transmission method for an MBMS service according to the present invention.

7 illustrates an example of informing a state of a specific service from a DRNC to an SRNC and a terminal;

8 illustrates another example of informing a state of a specific service from a DRNC to an SRNC and a terminal;

 The present invention relates to a wireless communication system and method for broadcasting and multicast (MBMS) services, and more particularly, to a signaling transmission method for receiving an MBMS service notification.

UMTS (Universal Mobile Telecommunications System) is a third generation mobile communication system that has evolved from the European standard Global System for Mobile Communications (GSM) system.It is based on GSM Core Network and Wideband Code Division Multiple Access (WCDMA) access technologies. In order to provide a more improved mobile communication service.

1 is a network structure of a conventional UMTS system to which the present invention is applied.

As shown in FIG. 1, the UMTS system is largely composed of a terminal, a UTRAN, and a core network (CN). UTRAN consists of one or more Radio Network Sub-systems (RNS), and each RNS consists of one Radio Network Controller (RNC) and one or more Node Bs managed by the RNC. do. The Node B is managed by the RNC, and receives the information transmitted from the physical layer of the terminal in the uplink, and transmits data to the terminal in the downlink, thereby serving as an access point of the UTRAN for the terminal. The RNC is in charge of allocating and managing radio resources and serves as an access point to the core network.

2 shows a connection structure between a UTRAN and a terminal in a UMTS network.

As shown in Figure 2, the terminal is connected to the core network (CN) to receive the service provided by the UMTS, the information of the terminal and the core network is transmitted via the UTRAN. The core network and the RNC are connected via the Iu interface to exchange data and control messages. Each terminal connected to the UMTS network is managed by a specific RNC in the UTRAN. In this case, the RNC managing the terminal is called a SRNC (Serving RNC). In other words, the SRNC refers to an RNC serving as an access point with the core network for transmitting data of a specific terminal. The SRNC plays the role of the second layer of the OSI (Open System Interface) for data coming in through the air interface or transmitted to the terminal, and allocates a radio resource suitable for providing a service. The radio resource management function of the SRNC includes all control functions related to a specific terminal such as transmission channel setting, handover decision, and open loop power control. Only has one SRNC.

In general, one RNC is used for the connection between the UE and the RNC. However, when the UE moves to an area in charge of another RNC, the RNC is connected to the SRNC via the RNC of the corresponding region.

Although the terminal is initially connected to the CN through R1 (RNC 1), but the terminal moves to the area (cell) managed by R2 (RAN 2), the terminal is connected to R1 via the Iur interface via R2. In this case, the management of the terminal and the access point between the core network are still performed by R1, and R2 performs a partial function of simply routing user data or allocating a code that is a common resource. In the UMTS network, like R2, all RNCs connected to UE except for SRNC are called DRNC (Drift RNC). As such, one UE may not have a DRNC according to a connection state, and may have one or several DRNCs.

The division of the SRNC and the DRNC is a logical division associated with a specific terminal. However, since the relationship between the RNC and the Node B in the UTRAN has a dependent relationship, the RNC can be distinguished from the Node B side. That is, to distinguish between the RNC managing Node B itself and other RNCs, the RNC in charge of managing a specific Node B is called a Controlling RNC (CRNC). That is, the RNC connected to the Node B and the Iub, which controls the radio resource of the Node B corresponds to the CRNC of the Node B, and the CRNC and Node B have a one-to-many relationship in the structure of the UTRAN. The CRNC performs a load control and congestion control of traffic in a cell managed by the CRNC and an admission control and code allocation function for a new radio link configured in these cells. .

In the third layer of the radio protocol located in the RNC and the terminal, a radio resource control (RRC) layer is defined. The RRC is responsible for controlling transport channels and physical channels in connection with setting, resetting, and releasing radio bearers. In this case, the radio bearer means a service provided by the second layer of the radio protocol for data transmission between the terminal and the RNC. In general, the setting of the radio bearer indicates the characteristics of the protocol layer and channel necessary to provide a specific service. The process of defining and setting each specific parameter and operation method.

Hereinafter, the RRC state and the RRC connection method of the UE will be described in detail.

The RRC state indicates whether or not the RRC of the UE is in a logical connection with the RRC of the UTRAN. If the RRC state is connected, the RRC connected state, and if not, the RRC idle state It is called. Since the UE in the connected state has an RRC connection, the UTRAN can grasp the existence of the UE in units of cells, and thus can effectively control the UE. On the other hand, the idle terminal can not be identified by the UTRAN, the core network is managed by the unit of Location Area or Routing Area that is larger than the cell. That is, the terminal in the idle state is identified only in a large area unit, and must move to the connected state in order to receive normal mobile communication services such as voice or data.

3 is a diagram illustrating a transition diagram of an RRC state of a terminal.

Referring to FIG. 3, when a user first turns on the power of the terminal, the terminal first searches for an appropriate cell and then remains idle in the cell. When it is necessary to establish an RRC connection, the terminal staying in the idle state makes an RRC connection with the RRC of the UTRAN through an RRC connection procedure and transitions to the RRC connected state. There are several cases in which an idle UE needs to establish an RRC connection. For example, when an uplink data transmission is required due to a user's call attempt or a paging message is received from the UTRAN, a response message is transmitted. This may be necessary.

Hereinafter, a multimedia broadcast / multicast service (MBMS) will be described in detail.

MBMS refers to providing a streaming or background service to a plurality of terminals by using a dedicated MBMS bearer service. In UTRAN, MBMS bearers use point to multipoint radio bearers and point to point radio bearer services.

The MBMS is divided into a broadcast mode and a multicast mode. The MBMS broadcast mode is a service for transmitting multimedia data to all users in a broadcast area. In this case, the broadcasting area means an area where a broadcasting service is available. On the other hand, the MBMS multicast mode is a service for transmitting multimedia data only to a specific user group in a multicast area. In this case, the multicast zone means an area capable of multicast service, and the multicast zone and the broadcast zone are called service zones.

4 shows an example of a process in which a UMTS network provides a specific MBMS service (service 1) to a UE using a multicast mode.

UE1 wishing to receive MBMS service subscribes to service 1 (Subscription). In this case, the subscription refers to the act of establishing a relationship between a service provider and a user. In addition, the terminal to receive the MBMS service should receive a service announcement (Service announcement) provided by the network, the service announcement is a function that informs the terminal of the list of services to be provided and related information in the future. In particular, the terminal that wants to receive the MBMS service in the multicast mode must specifically join a multicast group. In this case, the multicast group refers to a group of terminals receiving a specific multicast service, and the participation refers to a process in which the terminal joins a multicast group gathered to receive a specific multicast service. Through this participation process, the UE can inform the UMTS network of the intention to receive specific multicast data. In contrast, a process in which a terminal participating in a specific multicast group terminates participation in the multicast group is called leave. The subscription, participation, and withdrawal process is a process performed for each terminal, and the terminal may perform the subscription, participation, and withdrawal process at any time before, during, or after data transmission.

While a particular MBMS service is in progress, one or more sessions for that service may occur sequentially. When data to be transmitted for a specific MBMS service occurs in the MBMS data source, the CN informs the RNC of a session start. On the other hand, when there is no more data to be transmitted for a particular MBMS service in the MBMS data source, the CN notifies the RNC of a session stop. A data transfer process for a specific MBMS service may be performed between the session start and the session stop. In this case, only terminals that participate in the multicast group for a specific MBMS service may receive data transmitted through a data transmission process.

In the session initiation process, the RNC receiving the session initiation from the CN transmits an MBMS notification to the terminals. Here, MBMS notification refers to a function in which the RNC informs the UE that data transmission of a specific MBMS service is imminent in a cell. This MBMS notification is sent more than once before the actual data of the service is transmitted. The RNC may perform a counting function to determine the number of UEs that want to receive a specific MBMS service in a specific cell using the MBMS notification process. The aggregation function is used to determine whether to set up a wireless bearer that provides a particular MBMS service in a point-to-many, point-to-point or no wireless bearer configuration.

To select an MBMS radio bearer, the RNC internally sets a threshold. After performing the aggregation function, the RNC sets up a point-to-point MBMS radio bearer when the number of terminals in the cell is less than the threshold, and sets up a point-to-multipoint MBMS radio bearer when the number of terminals in the cell is greater than the threshold. Can be. After determining the MBMS radio bearer, the RNC informs the terminals of the information of the corresponding bearer. When the point-to-point wireless bearer is configured for a specific service, all terminals to receive the service are in an RRC connected mode. However, when a point-to-multipoint radio bearer is configured for a specific service, all of the terminals to receive the service need not be in the RRC connected mode. That is, the terminal in the RRC idle mode can also receive the point-to-multipoint radio bearer. However, if there is no terminal that wants a specific MBMS service as a result of the aggregation process, the RNC does not transmit the MBMS data without setting the radio bearer. The reason is that even though there is no user who wants the service, it is a waste of radio resources for the RNC to configure the radio bearer. When the data of the MBMS service is transmitted during the session of the MBMS service from the core network (CN), the RNC starts to transmit data using the established radio bearer, and releases the preset radio bearer when the session is interrupted from the core network.

The MBMS service area refers to an area composed of cells supporting the MBMS service subscribed to a specific terminal. The MBMS service area consists of a set of one or more cells, and may consist of cells managed by one RNC or may span areas managed by several RNCs. The list of neighboring cell information refers to a list in which the RNC lists information of cells managed by a DRNC located in its neighborhood.

5 is a diagram illustrating an MBMS attach process.

Referring to FIG. 5, an RNC providing an MBMS service identifies and manages a terminal in an RRC connection mode among terminals participating in a specific MBMS service for each cell in charge thereof. To this end, the RNC creates an RRC connected mode terminal list for each MBMS service of each cell. The RRC connected mode terminal list includes an identifier (URNTI) of terminals participating in a specific MBMS service.

In the MBMS connection process, among the MBMS services joined by the UE in the RRC connected mode, when the UE moves from the cell in charge of the SRNC to the cell in the DRNC for the MBMS service in progress, and the MBNC service is not in progress, the SRNC When the SRNC receives a session start from the CN for the MBMS service after moving from the cell in charge of the DRNC to the cell in charge of the DRNC, the SRNC transmits the terminal information to the DRNC through the MBMS connection request message. Refers to a process of adding the terminal requesting the connection to the RRC connection mode terminal list managed by the user for the MBMS service. In this case, the MBMS connection request message includes an ID of a cell to which the terminal has moved, an ID of an MBMS service to which the terminal is participating, and an identifier (URNTI) of the terminal.

When the MBMS connection request message for the specific terminal is received from the SRNC, if resources for maintaining the RRC connection mode state can be allocated to the terminal, the DRNC accepts the MBMS connection request of the terminal and the terminal moves. An identifier (URNTI) of the terminal is added to the RRC connection mode terminal list for the MBMS service in which the terminal of the cell participates.

After that, the DRNC transmits an acknowledgment to the SRNC through an MBMS connection response message. The SRNC keeps the UE in an RRC connected mode even in a mobile cell and receives the MBMS service data using a point-to-point radio bearer. To send. That is, the MBMS service data is transmitted to the DRNC through the SRNC and then again to the terminal using the point-to-point radio bearer in the DRNC.

The DRNC does not always accept the MBMS connection request message for the specific terminal from the SRNC. If the DRNC does not have a resource for establishing an RRC connection to the terminal and maintain the RRC connection mode, the DRNC rejects the MBMS connection request of the terminal and transmits a negative response to the SRNC.

However, in the related art, the following problems occur when the UE outside the MBMS service area is connected to the DRNC.

In general, when a UE located in another service area or outside of an MBMS service area is connected to a DRNC in a service area in which a subscribed service is available, the UE receives MBMS notification of the moved DRNC to receive information on the service. After the service is started, the service can be received.

However, when the terminal is a terminal receiving data from the SRNC through a dedicated channel, the terminal cannot simultaneously receive an MBMS control channel (MCCH) and a dedicated control channel (DCCH) due to lack of capacity. If the MCCH of the DRNC cannot be read, the UE cannot know the type of the service provided by the DRNC, but the DRNC cannot receive the MBMS service even though the DRNC transmits the subscribed MBMS service. .

Accordingly, an object of the present invention is to inform a terminal moving to a new cell information on a new service, so that the terminal can select the setting and release of a channel for a desired service in the new cell, a wireless communication system for a broadcast and multicast service And methods.

In order to achieve the above object, in the present invention, when the terminal receiving the first service in the first RNC is moved and connected to the second RNC providing the second service, the second RNC is information of the second service to the first RNC. The first RNC notifies the terminal of the information of the second service so that the terminal selects a desired service according to the information of the second service and its capacity.

Advantageously, said first RNC is a serving RNC (SRNC) and said second RNC is a DRNC (Drift RNC).

Preferably, if the first service is a dedicated channel service, the second service is an MBMS service, and if the first service is an MBMS service, the second service is a dedicated channel service.

Preferably, the information of the second service is a service ID or a list of service IDs. In addition, the information of the second service indicates all services that can be provided by the DRNC, a specific service subscribed to by the terminal, and whether simple services are available.

 Preferably, the information of the second service is delivered to the first RNC through a service indication message, and also to the terminal through a service notification message. In this case, the service indication message is a Radio Link Setup / Reconfigure Response and an Attach Response message.

In addition, in order to achieve the above object, in a system for setting a radio resource for a specific service by the request of the terminal, the present invention is the first terminal to receive the first service in the first RNC to provide a second service; When connected to the 2RNC, the second RNC informs the first RNC and the terminal of the information of the second service, so that the terminal selects the desired service according to the information of the second service and the capacity of the terminal.

Advantageously, said first RNC is a serving RNC (SRNC) and said second RNC is a DRNC (Drift RNC).

Preferably, if the first service is a dedicated channel service, the second service is an MBMS service, and if the first service is an MBMS service, the second service is a dedicated channel service.

Preferably, the second service information is a service ID or a list of service IDs.

Preferably, the second service information indicates all services that can be provided by the DRNC, specific services subscribed to by the terminal, and whether simple services are available.

 Preferably, the second service information is delivered to the SRNC through a service available indication message, and delivered to the terminal through a service notification message.

The present invention is implemented in a mobile communication system such as a universal mobile telecommunications system (UMTS) developed by 3GPP. However, the present invention can also be applied to communication systems operating according to other standards. Hereinafter, preferred embodiments of the present invention will be described in detail.

In general, the UE may not receive MCCH information at the same time while receiving a service from the SRNC through a dedicated channel. In this case, the UE may receive the corresponding MBMS service even though a specific MBMS service is subscribed to the cell managed by the DRNC. You will not be able to receive services. Therefore, the present invention enables the UE to inform that a specific MBMS service subscribed to the UE is provided in a cell managed by the DRNC.

That is, the present invention proposes a wireless communication system and method in which the system informs the terminal of the status of a specific service in order to support mobility of the terminal and to efficiently use radio resources. In particular, the present invention is a radio system for transmitting a broadcast and multicast service to a plurality of terminals through the down channel, the broadcast to inform the SRNC and the terminal that the service is available in the DRNC when the SRNC proceeds the MBMS connection process to the DRNC Or a multicast wireless communication system and method.

When a terminal receiving a service from a specific SRNC through a dedicated channel but not receiving an MBMS service because it is outside the MBMS service area is connected to a DRNC belonging to the MBMS service area, the terminal can receive the MBMS service. The link must be set up to receive MBMS notifications. In this case, the present invention informs the terminal and the RNC (SRNC) that both a dedicated channel (DCCH) and a dedicated channel (MCCH) for service notification that are already set up are possible, thereby enabling the terminal to set or release a desired radio link. To help.

As a method for supporting the above, two examples can be seen according to the state of the SRNC, and the description of each is as follows.

1. SRNC does not support MBMS service

In this case, the SRNC is an RNC that does not support R6 MBMS. In this case, the terminal receives a service by setting up a dedicated channel through the SRNC, and since the SRNC does not support the MBMS, it is impossible even if the terminal requests to subscribe to the MBMS service. In this state, when the UE moves and is connected to the DRNC capable of supporting the service, the UE must set up a dedicated channel (DCCH) to obtain information on the corresponding service from the DRNC.

2. SRNC supports MBMS service

In this case, the SRNC is an RNC capable of supporting R6 MBMS. In this case, the UE receives a service through a dedicated channel in an RRC connected state and receives a MBMS service available in the current cell among several MBMS services subscribed to it, and does not receive an MBMS service not supported by the current cell. to be. After that, when the UE moves, the SRNC requests an MBMS attach to the DRNC, and if there is an MBMS service that can be supported by the DRNC among the subscribed MBMS services, the SRNC sends a dedicated channel to the DRNC to obtain information about the MBMS service. MCCH) should be set.

6 is a flowchart illustrating a signaling transmission method for receiving an MBMS service notification according to the present invention.

As shown in FIG. 6, when the UE moves first, the SRNC requests an MBMS attach to the DRNC (S10 and S11). The DRNC receiving the MBMS connection checks whether there is an MBMS service that can be supported among the MBMS services subscribed to by the UE (S12), and if there is an MBMS service that can be supported, the DRNC checks whether the capacity of the UE is possible (S13). That is, in this case, it is a step of checking whether it is impossible to set two dedicated channels (DCCH of SRNC and MCCH of DRNC) due to insufficient capacity of the UE in the above two cases in which the dedicated channel should be set in the DRNC.

If the two dedicated channels cannot be set due to insufficient capacity of the terminal, the DRNC informs the SRNC of information indicating that MBMS service is available (S14), and if there is not enough capacity of the terminal, two dedicated channels (DCCH of SRNC). And MCCH of DRNC) are set to both (S17).

Accordingly, the SRNC requests the terminal to select one link based on the MBMS service availability information, and the terminal releases the connection to the SRNC if necessary according to the selected information. That is, the DRNC informs the SRNC that the MBMS service is available, and causes the SRNC to inform the UE of the situation through a dedicated channel (S15, S16). This information is conveyed through Iur messages, for example, Radio Link Setup / Reconfigure Response or Attach Response messages.

In FIG. 6, the DRNC checks whether the UE capacity is available first, and then informs the SRNC (or UE) of the MBMS service information (availability). However, the DRNC checks whether the previous service and the MBMS service are available. All can be sent to the terminal to allow the terminal to set and release the channel.

In general, when the terminal moves from the SRNC to the DRNC, information on the MBMS service subscribed to the terminal is transferred from the SRNC to the DRNC through the MBMS connection process. Through this, the DRNC moved by the terminal can know the information on the type of MBMS service subscribed to the terminal, and transmits information on the MBMS service that can be provided to the SRNC. The information on the MBMS service transmitted by the DRNC to the SRNC may be all MBMS services that can be provided by the DRNC, or may be specific MBMS services subscribed to the terminal among MBMS services provided by the DRNC. In addition, the information on the MBMS service transmitted by the DRNC to the SRNC may be one specific MBMS service, or may be the fact that MBMS service is available.

Receiving MBMS service information that can be provided by the DRNC, the SRNC may notify the UE that the specific MBMS service or several MBMS services can be provided by the DRNC or notify itself that the MBMS service is available by using a dedicated channel.

7 illustrates an example of informing a state of a specific service from a DRNC to an SRNC and a terminal.

Referring to FIG. 7, the DRNC delivers MBMS service information or type information on MBMS services to the SRNC through MBMS Service Indication. The MBMS service information is MBMS service information that can be supported by the DRNC or MBMS service type information or MBMS service available information that the DRNC can support among the MBMS services subscribed to by the terminal.

The SRNC receiving the MBMS service type information may know that a specific MBMS service subscribed to the terminal managed by the SRNC is available in the DRNC. The SRNC informs the UE that the MBMS service is available in the DRNC using a dedicated channel. In this case, the MBMS Service Indication message may include an MBMS attachment, a radio link setup, a radio link reconfiguration, and the like.

8 shows another example of informing a state of a specific service from a DRNC to an SRNC and a terminal.

In FIG. 8, the DRNC informs the SRNC that an MBMS service is available in the DRNC through an MBMS Service Avail Indication. The MBMS service available indication message may indicate that the MBMS service subscribed to by the UE, which has moved from the SRNC to the DRNC, may be provided by the DRNC but not provided by the SRNC, or may inform the SRNC that the MBMS service is available through the DRNC. Receiving the MBMS service available indication message SRNC may inform the terminal that the MBMS service is possible through the dedicated channel.

Accordingly, the UE may optionally maintain a dedicated channel, or may terminate it and determine the type of MBMS service through the MBMS service indication message from the DRNC, and then receive the MBMS service. The MBMS service indication message may be delivered directly to the terminal through the MCCH of the DRNC.

In addition, the present invention considers only the situation of receiving an additional MBMS service after moving to a dedicated channel service for convenience of description, but the present invention is not limited thereto, and the same applies to receiving an additional dedicated channel service after moving to a MBMS service. Is applied.

As described above, when a terminal, which has conventionally set a dedicated channel in the SRNC, moves to establish a connection with a DRNC capable of providing MBMS service, when setting a dedicated channel for receiving MBMS service information in the DRNC, According to the capacity (capability), the terminal could not support the selection of the setting and release of the channel for the desired service, there was a problem that can not receive information about the desired service, the reception of the ongoing service is impossible.

Accordingly, in the present invention, the terminal that cannot receive both dedicated channels (lack of capacity) informs that the RNC moved to select a desired service is capable of MBMS service, and thus sets and releases the channel according to the terminal selection. By doing so, the terminal may not receive information on a desired service and thus may not receive a service.

In addition, although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary and will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. . Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (27)

A second RNC indicating a second service information to a first RNC providing the first service when the terminal receiving the first service moves to a region providing the second service; A first RNC for receiving information of the second service and notifying the terminal; And selecting a desired service according to the information of the second service and its capacity, and requesting the establishment or release of a channel to the first RNC. The method of claim 1, The first RNC is a serving RNC (SRNC). The method of claim 1, The second RNC is a DRNC (Drift RNC), characterized in that the radio communication system for broadcast and multicast services. The method of claim 1, The first service The second service is an MBMS service if the dedicated channel service, and the second service is a dedicated channel service if the first service is the MBMS service. The method of claim 1, And the information of the second service is a service ID or a list of service IDs. The method of claim 1, The information of the second service is a broadcast or multicast wireless communication system, characterized in that all services that can be provided by the DRNC, a specific service subscribed to the terminal and whether simple services are available. The method of claim 1, The second RNC may broadcast information of the second service directly to the terminal through the MCCH channel, broadcast or multicast wireless communication system. The method of claim 1, The first RNC notifies the terminal of information of the second service through a service notification message. The method of claim 1, The information of the second service is transmitted to the SRNC through a service indication message, the wireless communication system for broadcast and multicast service. The method of claim 8, The service indication message is a Radio Link Setup / Reconfigure Response and Attach Response message. In a system for setting a radio resource for a specific service by the terminal request, When the terminal receiving the first service in the first RNC is connected to the second RNC providing the second service, the second RNC notifying the first RNC of the second service information; Notifying, by the first RNC, information of a second service to a terminal; And selecting a desired service according to the information of the second service and the capacity of the terminal. The method of claim 11, The first RNC is a SRNC (serving RNC), characterized in that the radio communication method for broadcast and multicast services. The method of claim 11, The second RNC is a DRNC (Drift RNC), characterized in that the radio communication method for broadcast and multicast services. The method of claim 11, If the first service is a dedicated channel service, the second service is an MBMS service; if the first service is an MBMS service, the second service is a dedicated channel service. The method of claim 11, And the second service information is a service ID or a list of service IDs. The method of claim 11, The second service information is a broadcast or multicast radio communication method, characterized in that all the services that can be provided by the DRNC, a specific service subscribed to the terminal and whether simple services are available. The method of claim 11, The second service information is broadcast or multicast wireless communication method, characterized in that delivered to the terminal via a dedicated channel of the first RNC. The method of claim 11, The second service information is a wireless communication method for a broadcast and multicast service, characterized in that delivered through a service indication message. The method of claim 18, The service indication message is a radio link setup / reconfigure response (Radio Link Setup / Reconfigure Response) and the connection response (Attach Response) message characterized in that the radio communication method for broadcast and multicast services. The method of claim 11, The terminal sets a channel only for the second service when the capacity is insufficient, the wireless communication method for broadcasting and multicast services. The method of claim 11, The terminal further comprises the step of requesting the establishment or release of the channel to the first RNC according to the selected service. In a system for setting a radio resource for a specific service by the terminal request, When the terminal receiving the first service in the first RNC is connected to the second RNC providing the second service, the second RNC notifying the first RNC and the terminal of the information of the second service; And selecting, by the terminal, a desired service according to the information of the second service and the capacity of the terminal. The method of claim 22, The first RNC is a serving RNC (SRNC), and the second RNC is a DRNC (Drift RNC), characterized in that the radio communication method for broadcast and multicast services. The method of claim 22, If the first service is a dedicated channel service, the second service is an MBMS service; if the first service is an MBMS service, the second service is a dedicated channel service. The method of claim 22, And the second service information is a service ID or a list of service IDs. The method of claim 22, The second service information is a broadcast or multicast radio communication method, characterized in that all the services that can be provided by the DRNC, a specific service subscribed to the terminal and whether simple services are available. The method of claim 22, The second service information is delivered to the SRNC through a service available indication message, and broadcast or multicast wireless communication method, characterized in that delivered to the terminal via a service notification message.

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