WO2007012280A1

WO2007012280A1 - Method, system and apparatus for transmitting and receiving multimedia broadcast/multicast serving service

Info

Publication number: WO2007012280A1
Application number: PCT/CN2006/001874
Authority: WO
Inventors: Hao Hu; Bing Xu
Original assignee: Huawei Technologies Co., Ltd.
Priority date: 2005-07-27
Filing date: 2006-07-27
Publication date: 2007-02-01
Also published as: CN1905694A; CN100450004C

Abstract

A service transmitting method for the multimedia broadcast/multicast service (MBMS), which is as follows: a1. the network messages the information of the MBMS carrier wave allocated separately to UE; a2. the network determines the carrying mode of the current MBMS service after receiving the session starting indication of the MBMS service session; a3. the network transmits the service control information and the indicating information to UE, establishes the carrying communication based on the determined carrying mode, and transmits the current MBMS service to UE by using the MBMS carrier wave. And a MBMS service receiving method, a system for transmitting and receiving the MBMS service, and a MBMS service receiving apparatus are provided. To use the solution of the invention, it can provide the MBMS services of abundant types and won’t influence the other services synchronously, it also makes that UE can receive the required MBMS services according to its own requirement from the provided MBMS services of abundant types.

Description

Method, system and device for transmitting and receiving multimedia broadcast/multicast service service

The present invention relates to a Multimedia Broadcast/Multicast Service (MBMS) technology, and more particularly to a MBMS service transmission method and reception method based on single carrier implementation, a system for transmitting and receiving MBMS services, and a device for receiving MBMS services. Background of the invention

Multicast and broadcast are technologies that transfer data from one data source to multiple destinations. In a conventional mobile communication network, a cell multicast service or a cell broadcast service (CBS) allows low bit rate data to be transmitted to all users through a cell shared broadcast channel, which is a message type service.

Nowadays, the demand for mobile communication is no longer satisfied with the telephone and message services. With the rapid development of the Internet, a large number of mobile multimedia services have emerged. Some of these mobile multimedia services require multiple users to receive the same data at the same time, such as video on demand, TV broadcast, video conferencing, online education, interactive games, and the like. Compared with general data services, these mobile multimedia services are characterized by large data volume, long duration, and delay sensitivity. The current Internet Protocol (IP) multicast and broadcast technologies are only applicable to wired IP communication networks, and are not applicable to mobile communication networks. The reason is that mobile communication networks have specific network structures, functional entities, and wireless interfaces, and these are Wired communication IP networks are different.

In order to effectively utilize mobile communication network resources, the Third Generation Mobile Communications Global Standards Organization (3GPP) proposes MBMS for mobile communication networks to provide a point-to-multipoint service in which data sources transmit data to multiple users in a mobile communication network. , to achieve network resource sharing, improve network resources, especially the utilization of air interface resources. The MBMS proposed by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia Multicast and broadcast of physical services, which undoubtedly conforms to the trend of future mobile data development.

FIG. 1 is a schematic diagram of a structure of a wireless network supporting broadcast/multicast services. As shown in FIG. 1 , in a conventional 3GPP, a wireless network entity supporting a broadcast/multicast service is a broadcast/multicast service server (BM-SC) 101. The BM-SC 101 is connected to a Gateway GPRS Support Node (GGSN) 102 via a Gmb interface or a Gi interface, and one BM-SC 101 can be connected to multiple GGSNs 102; the GGSN 102 is supported by a Gn/Gp interface and a service GPRS. A SGSN (Serving GPRS Support Node) 103 is connected, and one GGSN 102 can be connected to a plurality of SGSNs 103; the SGSN 103 can be connected to a Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) 104 via an Iu interface, and then UTRAN 104 is connected to the UE 106 through a Uu interface, and the SGSN 103 can also be connected to the Global System for Mobile Communications Enhanced Radio Access Network (GERAN) 105 via the Iu/Gb interface, and then the GERAN 105 is connected to the UE 107 via the Um interface. Among them, GGSN and SGSN belong to the nodes in the core network (CN) in the wireless network.

It can be seen from the network structure shown in FIG. 1 that in order to support the MBMS service, a mobile network functional entity broadcast multicast service center, that is, a BM-SC, is added to the third generation mobile communication system, and the BM-SC provides content. The entry of the person, for authorizing and initiating the MBMS service in the mobile network, and transmitting the MBMS content according to a predetermined time schedule. In addition, MBMS-related functions are added to functional entities such as UE, UTRAN, GERAN, SGSN, and GGSN.

The MBMS includes a multicast mode and a broadcast mode. The processes involved in the MBMS multicast service include: subscription, service announcement, join, session start, and MBMS notification. MBMS notification ), Data transfer, Session Stop, and Leaving.

The processing involved in the MBMS broadcast service is similar to the MBMS multicast service, except that Before the session starts, there is no need to perform the sign-off process and the user join process, and after the session ends, there is no need to perform the user exit process.

At present, the MBMS system is an important attribute of the 3GPP Release 6 version. In other words, the MBMS technology is attached to the existing 3G system. The MBMS service is carried over the existing transport channel and physical channel, using the existing frequency. And bandwidth, etc.

Due to the large number of types of services involved in the MBMS system, from background services such as software downloads to real-time services such as video browsing, as the number of providers increases, the number of services will continue to increase. However, MBMS currently uses existing WCDMA resources, namely: the existing transport channel and physical channel are used, which has the effect of occupying a large number of existing wireless resources. In this way, there are two aspects: On the one hand, other existing services are greatly affected; on the other hand, the types of services that the MBMS service can provide at the same time are greatly limited. Summary of the invention

In view of this, the first object of the present invention is to provide an MBMS service transmission method capable of providing a rich MBMS service without affecting other services. A second object of the present invention is to provide an MBMS service receiving method that enables a desired MBMS service to be received from a type-rich MBMS service provided by the user. The third pi of the present invention is to provide a system for transmitting and receiving MBMS services, which can provide a rich MBMS service without affecting other services. A fourth object of the present invention is to provide an apparatus for receiving an MBMS capable of receiving a desired MBMS service from a type-rich MBMS service provided in accordance with its own needs.

For the first object of the invention, the technical solution of the invention is achieved in this way:

A multimedia broadcast/multicast service MBMS service sending method, the method comprising the following steps: Al. The network side determines the bearer mode of the current MBMS service;

A2. The network side sends service control information and indication information to the UE, and establishes a bearer according to the determined bearer mode, and uses the allocated MBMS carrier to transmit the current MBMS service to the UE.

In the above solution, before the step al, the method further includes:

A0. The network side notifies the UE of the separately allocated MBMS carrier information.

In the foregoing solution, the step a0 and the step al further include: receiving, by the network side, a session start indication of the MBMS service session.

In the above solution, the method further includes:

A3. After receiving the session stop indication, the network side releases the corresponding radio bearer according to the determined bearer mode.

In the above solution, before step a0, the network further includes: the network selecting a dedicated frequency segment as the MBMS carrier allocated to the MBMS service separately.

In the above solution, the MBMS carrier information in step a0 is notified to the UE through a broadcast channel or a control channel.

In the above solution, the method of determining the bearer mode of the MBMS service is as follows: the network side determines the bearer mode of the MBMS service by using the counting counting process; or directly determines the bearer mode of the MBMS service according to the MBMS service type.

In the above solution, the network side in the step a1 determines the bearer mode of the MBMS service by counting the counting process, and the counting process is performed on the MBMS carrier, or on the non-MBMS carrier, or on the two carriers of the MBMS carrier and the non-MBMS carrier. get on.

In the above solution, the network side determines whether the counting process is performed on the MBMS carrier, or on the non-MBMS carrier, or on the two carriers of the MBMS carrier and the non-MBMS carrier, according to the network load and/or the service characteristics.

In the foregoing solution, the indication information in step a2 is sent by using an MBMS carrier; or The service control information is sent by using an MBMS carrier; or the service control information and the indication information are all sent by using an MBMS carrier.

In the foregoing solution, the service control information in step a2 is sent by using each of the MBMS carrier and the non-MBMS carrier.

In the foregoing solution, the network side receives the session start indication of the MBMS service on the MBMS carrier; or

The network side receives the session stop indication of the MBMS service on the MBMS carrier; or, the network side receives the session start indication of the MBMS service and the session stop indication of the MBMS service on the MBMS carrier.

In the foregoing solution, the step a3 further includes: the network side sends a stop to receive the MBMS service notification to the UE, and the stop receiving the MBMS service notification is sent by using the MBMS carrier.

In the above solution, the step a3 further includes: the network side notifying the UE to release the radio bearer by explicit signaling.

In the above solution, after the step a3, the network side further includes: determining, by the network side, whether to indicate the UE switching frequency, and if yes, sending the indication information including the specified frequency to the UE, or sending the indication information including the algorithm used by the designated UE to perform frequency selection.

In the above solution, the network side sends indication information to the UE on the MBMS carrier.

In the above solution, the method further includes: the network side notifying the UE of the separately allocated MBMS carrier information by using the MBMS carrier.

For the second object of the invention, the technical solution of the invention is achieved in this way:

An MBMS service receiving method, characterized in that: the network side allocates a separate MBMS carrier and sends an MBMS service on the allocated MBMS carrier; the method further includes: b21. The UE receives service control information and indication information of the current MBMS service; B22. The UE receives the current MBMS service according to the determined bearer mode on the MBMS carrier. In the above solution, before the step b21, the method further includes:

B20. The UE subscribes to and joins the current MBMS service.

In the above solution, the method further includes:

B23. After receiving the MBMS service notification, the HE stops receiving the current MBMS service and releases the corresponding radio bearer.

In the above solution, the network side allocates a separate MBMS carrier and sends the MBMS service on the MBMS carrier, including:

Ml. The network side notifies the UE of the separately allocated MBMS carrier information;

Bl2. After receiving the session start indication of the MBMS service session, the network side determines the bearer mode of the current MBMS service.

The network side sends the service control information and the indication information to the UE, and establishes a bearer according to the determined bearer mode, and uses the allocated MBMS carrier to transmit the current MBMS service to the UE.

In the above solution, the method further includes:

Bl4. After receiving the session stop indication, the network side releases the corresponding radio bearer according to the determined bearer mode.

In the foregoing solution, before the step M1, the network further includes: the network selecting a dedicated frequency segment as the MBMS carrier separately allocated to the MBMS service.

In the above solution, the MBMS carrier information in step b11 is notified to the UE through a broadcast channel or a control channel.

In the foregoing solution, the bearer mode of the MBMS service is determined by the step bl2, and the bearer mode of the MBMS service is determined by the network side by counting the counting process; or the bearer mode of the MBMS service is directly determined according to the MBMS service type.

In the above solution, in step bl2, the network side determines the bearer mode of the MBMS service by counting the counting process, and the counting process is performed on the MBMS carrier, or The MBMS carrier is carried out or on two carriers of the MBMS carrier and the non-MBMS carrier. In the foregoing solution, the network side determines, according to network load and/or service characteristics, that the counting process is performed on the MBMS carrier, or on the non-MBMS carrier, or on the two carriers of the MBMS carrier and the non-MBMS. carrier.

In the foregoing solution, the indication information in step bl3 is sent by using an MBMS carrier; or the service control information is sent by using an MBMS carrier; or the service control information and the indication information are all sent by using an MBMS carrier;

Then, in step b21, the UE receives the indication information, or the service control information, or the service control information and the indication information on the MBMS carrier.

In the foregoing solution, the service control information in step M3 is sent by using each of the MBMS carrier and the non-MBMS carrier;

Then, in step b21, the UE receives a part of the service control information on the MBMS carrier and the non-MBMS carrier, respectively.

The network side receives the session stop indication of the MBMS service on the MBMS carrier; or, the network side receives the session start indication and the session stop indication of the MBMS service on the MBMS carrier.

In the foregoing solution, the step M4 further includes: the network side sends a stop to receive the MBMS service notification to the UE, and the stop receiving the MBMS service notification is sent by using the MBMS carrier.

In the foregoing solution, the step M4 further includes: the network side notifying the UE to release the radio bearer by explicitly signaling.

In the foregoing solution, after the step M4, the method further includes: determining, by the network side, whether to indicate the UE switching frequency, and if yes, sending the indication information including the specified frequency to the UE, or sending the indication information including the algorithm used by the specified UE to perform frequency selection. In the above solution, the network side sends indication information to the UE on the MBMS carrier.

In the foregoing solution, the MBMS service sending process further includes: the network side notifying the UE of the separately allocated MBMS carrier information by using the MBMS carrier.

In the above solution, in step b20, the MBMS carrier is used to subscribe to the MBMS service and/or to join the MBMS service.

In the foregoing solution, before step b22, the method further includes: determining, by the UE, whether another service is performed, if not, the UE switches its own frequency to the MBMS carrier, and performs step b22; if yes, determining whether to receive the MBMS service or the non-MBMS service, if After receiving the MBMS service, the UE switches its own frequency to the MBMS carrier, and performs step b22. Otherwise, the process ends. ·

In the foregoing solution, the determining whether there are other services is specifically performed by: determining, by the paging process, whether other non-MBMS services exist, and/or determining whether other MBMS services exist through the MBMS control information.

In the foregoing solution, in step b23, the UE releases the corresponding radio bearer according to the indication of the network side, or decides to release the corresponding radio bearer by itself.

In the foregoing solution, after step b23, the method further includes: the UE switching to the specified frequency according to the network side indication, or the UE switching to the selected frequency according to the selection.

In the above solution, the frequency that the UE is to switch to is the original frequency of the UE, or the frequency determined by an algorithm that satisfies the UE to be uniformly distributed to each frequency.

For the third object of the invention, the technical solution of the invention is achieved in this way:

A system for transmitting and receiving MBMS services, the system comprising:

The network side subsystem is configured to determine a bearer mode of the current MBMS service, send service control information and indication information to the UE, and establish a bearer according to the determined bearer mode, and use the allocated MBMS carrier to transmit the current MBMS service to the UE;

a UE, configured to receive service control of a current MBMS service sent by a network side subsystem The information and the indication information are received, and the current MBMS service sent by the network side subsystem is received on the MBMS carrier according to the determined bearer mode.

In the above solution, the UE includes:

The control information and the indication information receiving module are configured to receive the service control information and the indication information of the current MBMS service, query the MBMS carrier information storage module, obtain the MBMS carrier information, and output the information to the MBMS service receiving module;

An MBMS carrier information storage module, configured to store MBMS carrier information;

The MBMS service receiving module is configured to receive the MBMS service according to the MBMS carrier information input by the control information and the indication information receiving module.

In the above solution, the network side subsystem is further configured to: notify the UE of the separately allocated MBMS carrier information.

In the above solution, the network side subsystem is further configured to: after receiving the session stop indication, release the corresponding radio bearer according to the determined bearer mode.

In the above solution, the UE is further configured to: subscribe to and join the current MBMS service. In the above solution, the UE is further configured to: after receiving the stop receiving the MBMS service notification from the network side subsystem, stop receiving the current MBMS service and release the corresponding radio bearer.

For the fourth object of the invention, the technical solution of the invention is achieved in this way:

A device for receiving an MBMS service, the device comprising:

The MBMS service receiving module is configured to receive the MBMS service according to the control information and the MBMS carrier information input by the indication information receiving module. In the above solution, the apparatus is further configured to: subscribe to and join the current MBMS service. In the above solution, the apparatus is further configured to: after receiving the stop receiving the MBMS service notification, stop receiving the current MBMS service and release the corresponding radio bearer.

The MBMS service transmitting method and receiving method, system and receiving apparatus provided by the present invention use the separately allocated carrier to carry the MBMS service, and thus have the following significant beneficial effects:

On the one hand, MBMS services do not need to occupy existing radio resources, and will not affect the normal operation of other services, and facilitate the efficient use of resources by mobile communication systems. At the same time, from the perspective of operators, full, effective and reasonable use of radio resources, The beneficial effect is far greater than the effort of the individual spectrum;

On the other hand, the MBMS service has sufficient radio resources to enable the MBMS system to provide a wide variety of MBMS services. In particular, with the development of communication in the future, multimedia service services such as mobile TV will gradually become the mainstream. Providing rich and colorful MBMS services on mobile phones will be the biggest selling point of operators. Only a single carrier can be allocated to carry more MBMS services. In order to make the MBMS business type more diverse. Moreover, in the present invention, the UE can select the service that the user wants to receive the most, so that the UE can receive the rich and high-speed MBMS service according to its own needs, and notify the UE in time when the non-MBMS service arrives, and ensure the UE receives. Go to your favorite MBMS business or other business. BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a wireless network structure supporting broadcast/multicast services;

2 is a schematic diagram of a MBMS service transmission process on the UTRAN side in the present invention; FIG. 3 is a schematic diagram of a MBMS service reception process on the UE side in the present invention;

4 is a schematic diagram of a basic structure of a system for transmitting and receiving an MBMS service according to the present invention; FIG. 5 is a schematic diagram of a basic structure of an apparatus for receiving an MBMS service according to the present invention. Mode for carrying out the invention

The main idea of the present invention is to introduce a new carrier to carry MBMS services, that is, to transmit MBMS services using separately allocated frequency segments. In the present invention, a system for separately transmitting a carrier-bearing MBMS service is referred to as a single-carrier MBMS system, and a separately allocated frequency segment is referred to as an MBMS carrier, and other frequency segments such as those commonly used in the prior art are referred to as non-MBMS carriers. The implementation of the present invention is as follows: The UE supports receiving on multiple frequency segments.

It can be seen from the MBMS service transmission process on the existing UTRAN side and the MBMS service reception process on the UE side that there are many interaction operations involved between the UTRAN and the UE, including uplink operation and downlink operation, for example: UTRAN sends control information to the UE. , indication information, session start/stop indication; UE subscription to MBMS service, UE joining MBMS service, and the like. Therefore, the most basic practice of the present invention is: MBMS service is only transmitted using the MBMS carrier, but further, the UTRAN can transmit various information to the UE, and the indication can also use MBMS carrier transmission. All information and indications sent by the UTRAN may be MBMS carriers, or some may use MBMS carriers, and some may use non-MBMS carriers, for example: the session start/stop indication uses the MBMS carrier, the service control information uses the non-MBMS carrier, etc.; The MBMS carrier may also be adopted by the UE to subscribe to the MBMS service, join the MBMS service, and the like. The UTRAN can also transmit some information and a part of the indication on the MBMS carrier and the non-MBMS carrier at the same time. Accordingly, the UE switches back and forth between the two frequencies to receive information sent on different carriers. As to when the UE receives information in which frequency band, the UTRAN will notify the advance indication through the service change indication, and how the UE performs handover on different frequency bands belongs to the prior art, and details are not described herein again.

The implementation process of the method of the present invention will be further described below in conjunction with some specific embodiments. Embodiment 1: In this embodiment, only the MBMS carrier is used to transmit the MBMS service, and other interaction operations are performed on the non-MBMS carrier.

The method for carrying the MBMS service by using a single carrier in the present invention actually includes two parallel processes: an MBMS service transmission process on the UTRAN side and an MBMS service reception process on the UE side.

From the perspective of UTRAN, the MBMS service transmission process as shown in Figure 2 includes the following steps:

Steps 201 to 202: The network selects a dedicated frequency segment as the MBMS carrier for transmitting the MBMS service, and notifies the UE of the selected MBMS carrier information.

Here, the network generally selects an appropriate frequency segment to be separately allocated to the MBMS service according to the needs of the operator; it can be selected at any time before the start of the MBMS service, or in the network planning, according to the network size, network characteristics, the number of bands owned by the network, etc. The information is pre-selected for the MBMS carrier. If it is determined at the time of network planning, step 201 may be omitted as long as the MBMS carrier currently used by the UE is notified each time the MBMS service is transmitted. Even if the network is not planned well, the dedicated frequency segment for selecting the MBMS service is not performed every time the MBMS service is transmitted. The MBMS carrier can be changed after being selected, or it can be re-selected as needed, but does not need to be re-selected frequently. As long as the MBMS carrier currently used by the UE is notified each time the MBMS service is transmitted.

In this embodiment, one uplink frequency segment corresponds to two downlink frequency segments, and the network side needs to coordinate the selected frequency segment with the original uplink and downlink frequency segments. Specifically, for the MBMS service, the UTRAN is at an uplink frequency. The segment receives the information, and transmits the MBMS service and the control information and the indication related to the transmission service in the two downlink frequency segments respectively.

In step 202, the UTRAN may notify the UE of the MBMS carrier information through the broadcast channel, and may also notify the UE through other control channels. At this time, the UTRAN adopts a non-MBMS carrier. Certainly, if the MBMS carrier is determined during network planning and the UE has been informed, this step may be omitted, that is, the MBMS carrier does not need to be notified to the UE through the air interface.

Step 203: The UTRAN obtains a session start indication of a certain MBMS service session from the CN. Step 204: The UTRAN determines whether to count the current MBMS service to determine the bearer mode of the MBMS service.

The counting described here is to count the number of specific users receiving services in the cell, so as to obtain a correct bearer mode for a certain MBMS service, so as to ensure efficient use of air interface radio resources.

In the actual application, the UTRAN may determine whether to perform the counting process according to the type of the service; or determine the bearer type of the MBMS service according to the MBMS service type, for example, the PTM RB mode bearer is determined for a specific MBMS service.

Step 205: The UTRAN sends the MBMS service control information and the service change indication information to the UE through the MCCH channel and the MICH channel.

Step 206: If it is decided to adopt a point-to-multipoint (PTM) mode transmission bearer mode, a PTM bearer setup procedure is initiated between the UTRAN and the UE, and the UTRAN uses the MBMS carrier to transmit the MBMS service on the MTCH channel; if it is decided to adopt a point-to-point (PTP) Mode transmission bearer mode, the process of establishing bearer bearer between UTRAN and UE.

In practical applications, MBMS service data has two modes when transmitting between UTRAN and UE: PTM mode and PTP mode. The PTM mode transmits the same data through the MBMS point-to-multipoint traffic channel (MTCH), and all UEs that join the multicast service or are interested in the broadcast service can receive; the PTP mode transmits data through the DTCH logical channel, and only one corresponding UE can Roger that.

Step 207: After receiving the session stop indication sent by the CN, the UTRAN according to the UTRAN according to The bearer mode of the MBMS service is operated: If it is the MBMS service carried by the PTM, the UTRAN informs the UE to stop receiving the MBMS service through the MCCH channel, and releases the RB corresponding to the corresponding MBMS service; if the MBMS service is carried by the PTP mode, then UTRAN The PTP RB is released and the information on the MCCH is updated to ensure that the subsequently accessed UE correctly receives the information.

In this step, the UTRAN may also notify the UE to release the radio bearer by displaying signaling. Step 208: The UTRAN decides whether to instruct the UE to switch the frequency. If yes, the UTRAN sends the indication information including the specified frequency to the UE, or sends the indication information including the algorithm used by the designated UE to perform frequency selection. The specified frequency may be the original frequency of the UE, or may be the frequency that the UE needs to return by using a certain algorithm on the UTRAN side. The algorithm used by the UTRAN to determine the frequency or the algorithm used by the specified UE is guaranteed. The algorithm in which the UE is evenly dispersed to each frequency.

Here, UTRA can send an indication on the MBMS carrier or on a non-MBMS carrier. This step is optional. The UTRAN can decide whether to instruct the UE to transfer to the corresponding frequency according to factors such as the network load condition, and how to instruct the UE to transfer to the corresponding frequency.

As shown in FIG. 3, the MBMS service receiving process includes the following steps: Step 301 302: The UE subscribes to the MBMS service and joins the MBMS service. In actual applications, the network side may also send the MBMS service to all UEs. In this case, step 301 and step 302 may be omitted, that is, the UE does not need to subscribe to and join the MBMS service, and directly receives the MBMS service from the network side.

Step 303: The UE monitors the MICH channel and/or the MCCH channel, and obtains service change indication information.

Step 304: If the network is "counting", the UE needs to respond according to the network requirement; here, the UE may be a UE in different modes and different states, for example, in an idle (Idle) mode and in an RRC connected mode. CELL - PCH status, at The CELL_FACH state of the RRC connected mode, the URA_PCH state in the RRC connected mode, and the CELL_DCH state in the RRC connected mode; and, the UE responds to the counting process according to its own capability.

Step 305: If the UE finds that the MBMS service that the user joins changes, the UE receives the changed service control information sent by the UTRAN on the MCCH channel, and includes information such as the bearer providing mode of the added MBMS service, such as PTM RB and PTP. RB.

Steps 306-308: Determine whether other services are performed, if not, perform step 1209; if yes, the UE determines whether to receive the MBMS service or the non-MBMS service according to the service priority, and if it is the non-MBMS service, the UE is on the non-MBMS carrier. The process of receiving the non-MBMS service ends the process; if it is the MBMS service, step 309 is performed.

Here, it is also possible not to judge, that is, regardless of other services, the MBMS service is directly received. In this case, step 306 308 can be omitted.

In step 306, it is determined whether there is another service, and the UE may determine whether there are other non-MBMS services through the paging process, and then perform priority selection between the MBMS service and the non-MBMS service. Of course, the MBMS control information may also be used to learn whether There are other MBMS services, and the priority of the service is selected between the MBMS services.

The UE needs to consider the MBMS service and the non-MBMS service when performing the service priority selection. If the MBMS service is the most desired service, the UE goes to the MBMS carrier to receive the MBMS service; if the non-MBMS service is the service that most wants to receive, The UE does not need to perform frequency reselection, and ignores the control information of the related MBMS service. If the UE is in the plurality of MBMS services, and the service that most wants to receive is not yet provided, the UE may not go to the MBMS carrier.

Step 309: The UE decides to receive the MBMS service, and on the MBMS carrier, then the UE first switches its own receiving frequency to the MBMS carrier, then receives the MBMS service on the MBMS carrier, and the UE determines to receive according to the received control information. Channel: if The MBMS service is provided by the PTM mode, and the MBMS service is received on the MTCH channel. If the MBMS service is provided through the PTP mode, the MBMS service is received on the DCCH channel.

Step 310: After receiving the BMS service notification sent by the UTRAN through the MCCH channel or the DCCH channel, the UE stops receiving the current MBMS service, and releases the RB according to an explicit indication on the UTRAN side or at its discretion.

The method of releasing the RB by itself may adopt a timer mode, and a timer is set. The general timer can be started when the session start indication is received, and the timer expires when the timer expires; or if it is set for a period of time if not The RB is released upon receiving the MBMS service.

Step 311: When the MBMS service ends, the UE switches to the non-MBMS carrier according to the indication of the UTRAN side or its own selection.

Here, the non-MBMS carrier may be the original frequency of the UE; or may be the frequency that the UE determines to be returned by the UTRAN side through a certain algorithm; or may be determined by the UE itself according to a certain algorithm after the MBMS service is received. The frequency of return, wherein the mentioned algorithm can be a random selection algorithm, a hash algorithm, etc., as long as it is an algorithm that can ensure that the UE is evenly dispersed to each frequency. That is to say, the UE returns its original frequency after receiving the MBMS service according to the indication on the UTRAN side or its own selection, or switches to the frequency specified by the UTRAN side or the frequency determined by the UE itself.

In step 311, the indication sent by the UTRAN side to the UE may be the specified frequency. The algorithm may be used to specify the frequency selection by the UE. If the algorithm is specified, the UE uses the specified algorithm to perform frequency selection, and then switches to itself. Determined on the frequency.

In an actual application, the counting process described in step 304 may also be performed after step 1207, before step 309, that is, after determining that the UE decides to receive the MBMS service, and after receiving on the MBMS carrier, it is determined by the counting process. The 7-load mode of the MBMS service. Embodiment 2: In this embodiment, the UTRAN uses the MBMS carrier to send the relevant indication information of the counting, and counts the MBMS service on the MBMS carrier, then the step 204 changes to step 204, where:

Step 204: The UTRAN determines, on the MBMS carrier, whether to count the current MBMS service according to requirements, to determine the bearer mode of the MBMS service. Specifically, if the current MBMS service needs to be counted, the UTRAN sends the MBMS access information on the MBMS carrier, and the MBMS access information carries the indication information to be counted.

The counting process between the UTRAN and the UE may be performed on the MBMS carrier, or may be performed on the two carriers of the MBMS carrier and the non-MBMS carrier, for example, providing a counting indication on the non-MBMS carrier, and performing the counting operation on the MBMS carrier. . Embodiment 3:

In this embodiment, the UTRAN sends the indication information of the MBMS service change to the UE through the MICH channel by using the MBMS carrier. Correspondingly, the UE receives the service change information indicated by the network on the MBMS carrier. Then, step 205 becomes step 205,

Step 205 ′: The UTRAN uses the MBMS carrier to send the indication information of the MBMS service change to the UE through the MICH channel, and uses the non-MBMS carrier to send the MBMS service service control information to the UE through the MCCH channel.

Correspondingly, step 303 becomes step 303,

Step 303: The UE monitors the MICH channel and/or the MCCH channel, and obtains service change indication information on the MBMS carrier. Embodiment 4:

In this embodiment, the UTRAN uses the MBMS carrier to send the service control information of the MBMS service to the UE through the MCCH channel, and correspondingly, the UE receives the network on the MBMS carrier. Business control information provided by the network. Then, step 205 becomes step 205": Step 205": UTRA uses MBMS carrier to send to the 通过 through the MCCH channel

The service control information of the MBMS service uses the non-MBMS carrier to send the indication information of the MBMS service to the UE through the MICH channel.

Correspondingly, step 305 changes to step 305,

Step 305: If the UE finds that the MBMS service that the user joins changes, the UE receives the changed service control information sent by the UTRAN through the MBMS carrier on the MCCH channel, where the information includes the bearer providing mode of the added MBMS service, for example, PTM RB, PTP RB.

In this embodiment, the UTRAN may send a part of the service control information on the two carriers of the MBMS carrier and the non-MBMS carrier. Correspondingly, the UE may receive a part of the service control information on each of the two carriers. Embodiment 5:

In this embodiment, the UTRAN sends the MBMS service change indication information and the service control information to the UE by using the MBMS carrier. Correspondingly, the UE receives the service change information indicated by the network and the changed service control information on the MBMS carrier. Then, step 205 becomes step 205,,,:

Step 205: ": The UTRAN uses the MBMS carrier to send control information and indication information of the MBMS service to the UE through the MCCH channel and the MICH channel.

Correspondingly, step 303 becomes step 303':

Step 303: The UE monitors the MICH channel and/or the MCCH channel, and obtains service change indication information on the MBMS carrier.

Step 305 changes to step 305,

Step 305: If the UE finds that the MBMS service that it joins changes, the UE receives the changed service control sent by the UTRAN through the MBMS carrier on the MCCH channel. Information, including information such as the bearer providing mode of the added MBMS service, such as PTM RB, PTP RB ₀

In this embodiment, for the service control information, the UTRAN may send a part of the service control information on the two carriers of the MBMS carrier and the non-MBMS carrier. Correspondingly, the UE may receive a part of the service control information on each of the two carriers. Example 6:

In this embodiment, the UTRAN receives the session start indication and/or the session stop indication on the MBMS carrier, and then step 203 and/or step 207 become:

Step 203: The UTRAN obtains a session start indication of a MBMS service session from the CN on the MBMS carrier.

Step 207: After the UTRAN receives the session stop indication sent by the CN on the MBMS carrier, the UTRAN operates according to the bearer mode of the MBMS service: if it is the MBMS service carried by the PTM, the UTRAN notifies the UE to stop receiving the MBMS service through the MCCH channel, and The RB corresponding to the corresponding MBMS service is released. If the MBMS service is carried in the PTP mode, the UTRAN initiates the release of the PTP RB and updates the information on the MCCH to ensure that the subsequently accessed UE correctly receives the information.

Example 7:

In this embodiment, the UTRAN uses the MBMS carrier to notify the UE to stop receiving the MBMS service through the MCCH channel, and then step 207 changes to step 207":

Step 207": After the UTRAN receives the session stop indication sent by the CN, the UTRAN operates according to the bearer mode of the MBMS service: If it is the MBMS service carried by the PTM, the UTRAN uses the MBMS carrier to notify the UE to stop receiving the MBMS service through the MCCH channel, and releases The RB corresponding to the corresponding MBMS service; if the MBMS service is carried in the PTP mode, the UTRAN initiates the release of the PTP RB and updates the letter on the MCCH. The information is guaranteed to be correctly received by the UE after access.

Example 8:

In this embodiment, the UTRAN establishes a PTM bearer or a PTP bearer on the MBMS carrier. Then, step 206 changes to step 206:

Step 206: If the PTM transmission bearer mode is determined, the PTM bearer setup procedure is initiated between the UTRAN and the UE, and the PTM bearer is established on the MBMS carrier, and the UTRAN uses the MBMS carrier to provide the MBMS service on the MTCH channel; if the PTP transmission is decided to be adopted Bearer mode, the process of establishing a PTP bearer between the UTRAN and the UE, and establishing a PTP bearer on the MBMS carrier. Example 9:

In this embodiment, the UE uses the MBMS carrier to subscribe to the MBMS service and/or joins the MBMS service. Then, step 301 and/or step 302 becomes: the UE subscribes to the MBMS service by using the MBMS carrier, and/or the UE joins the MBMS service by using the MBMS carrier. Example 9:

Based on Embodiments 3, 4, and 5, while the UTRAN sends the indication information and/or the service control information to the UE by using the MBMS carrier, the UTRAN may further transmit the MBMS carrier information that is separately allocated to the UE by using the MBMS carrier.

The UTRAN may inform the UE of the MBMS carrier information through the broadcast channel, and may also notify the UE through other control channels. Example 10:

In this embodiment, the UTRAN may further determine whether to perform counting on the non-MBMS carrier according to factors such as network load and service characteristics, whether to perform on the MBMS carrier, or at both frequencies.

The various implementations described in the above ten embodiments can be independently applied, It is also possible to combine applications with each other. For example, the MBMS service can be transmitted only by using the MBMS carrier, and all other interaction operations between the UTRAN and the UE are completed in the original frequency segment as in the prior art. The MBMS service can also be transmitted, and the MBMS service control information is used in the MBMS carrier. , or transmit MBMS service, MBMS service control information, 订阅 subscribe to MBMS service, UE join MBMS service, use MBMS carrier, and so on. In summary, based on the first embodiment, the ten embodiments can be combined with each other arbitrarily to further form a new implementation.

The present invention also proposes a system for transmitting and receiving MBMS services for the proposed method of transmitting and receiving MBMS services.

As shown in FIG. 4, the system for transmitting and receiving MBMS services of the present invention includes: a network side subsystem 401 and a UE 402.

The network side subsystem 401 is configured to determine a bearer mode of the current MBMS service, send service control information and indication information to the UE 402, and establish a bearer according to the determined bearer mode, and transmit the current MBMS to the UE 402 by using the allocated MBMS carrier. business. Of course, in the actual application, the network side subsystem 401 described herein generally needs to determine the bearer mode of the current MBMS service after receiving the MBMS service session start indication.

The UE 401 is configured to receive service control information and indication information of the current MBMS service sent by the network side subsystem 401, and receive the current MBMS service sent by the network side subsystem 401 according to the determined bearer mode on the MBMS carrier.

In practical applications, the network side subsystem generally selects the appropriate frequency segment to be separately allocated to the MBMS service according to the operator's needs; it can be selected at any time before the MBMS service starts, or in the network planning, according to the network size, network characteristics, and network. The MBMS carrier is pre-selected by the information of the number of bands and the like. At this time, the network side subsystem 401 can notify the UE 402 of the separately allocated MBMS carrier information.

In practical applications, the transmission of the MBMS industry can be determined by the RNC in the network side subsystem. The carrier is then transmitted by the RNC to the UE 402. If the carrier has already planned the carrier carrying the MBMS service, the RNC may directly transmit the MBMS carrier information to the UE 402 through the NodeB. The MBMS carrier information may also be stored in advance. The NodeB is sent to the UE 402 through a broadcast message or other type of control message; the MBMS carrier can also be determined by an entity in the SGSN network entity or other core network, and sent to the RC through the Iu interface message.

Of course, in a practical application, a new function module may be added to a network entity such as a NodeB, an RNC, or an SGSN in the network side subsystem, and used to determine the MBMS service to be transmitted according to factors such as the usage of physical resources in the current network. Carrier.

When the MBMS carrier transmission changes, the carrier update message may be sent to the UE 402 by the SGSN, the RNC or the NodeB; after receiving the update message, the UE 402 will update the MBMS carrier information stored by itself.

In an actual application, after receiving the session stop indication, the network side subsystem 401 releases the corresponding radio bearer according to the determined bearer mode. At the same time, the network side subsystem 401 sends a notification to the UE 402 to stop receiving the MBMS service. After receiving the notification, the UE 402 stops receiving the current MBMS service and releases the corresponding radio bearer.

In an actual application, before receiving the MBMS service, the UE 402 may also subscribe to and add the current MBMS service, and then receive the MBMS service.

In addition, if the network side subsystem includes Gw and ENodeB, the carrier that determines and transmits the carrier MBMS service is implemented by the corresponding Gw, ENodeB or core network entity, and the method is similar to the above method.

That is to say, in practical applications, the carrier transmitting the MBMS service may be determined by the Gw in the network side subsystem, and then the carrier information is sent to the UE 402 by the Gw; if the carrier has already planned the carrier carrying the MBMS service, then the Gw may Directly transmitting the MBMS carrier information to the UE 402 through the ENodeB; the MBMS carrier information may also be It is stored on the ENodeB and sent to the UE 402 through a broadcast message or other type of control message; the MBMS carrier can also be determined by an entity in the core network and sent to the Gw.

When the MBMS carrier transmission changes, the carrier update message may be sent by the Gw, ENodeB or core network entity to the UE 402; after receiving the update message, the UE 402 will update the MBMS carrier information stored by itself.

FIG. 5 is a schematic diagram showing the internal structure of an apparatus for receiving an MBMS service according to the present invention. The apparatus for receiving an MBMS service described herein refers to a UE 402. As shown in FIG. 5, the UE 402 includes: a control information and indication information receiving module 4021, an MBMS carrier information storage module 4022, and an MBMS service receiving module 4023.

The control information and indication information receiving module 4021 is configured to receive service control information and indication information of the current MBMS service, query the MBMS carrier information storage module 4021, obtain MBMS carrier information, and output the MBMS service receiving module 4023;

The MBMS carrier information storage module 4022 is configured to save MBMS carrier information.

The MBMS service receiving module 4023 is configured to receive the MBMS service according to the MBMS carrier information input from the control information and the indication information receiving module 4021.

The method of the present invention is applicable to mobile communication systems such as WCDMA, CDMA2000 UTRA TDD, and TD-SCDMA. The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A multimedia broadcast/multicast service MBMS service transmission method, characterized in that the method comprises the following steps:

Al. The network side determines the bearer mode of the current MBMS service;

2. The method according to claim 1, wherein the step al further comprises:

The method according to claim 2, wherein the step a0 and the step al further comprise: the network side receiving a session start indication of the MBMS service session.

The method according to claim 3, wherein the method further comprises: a3. After receiving the session stop indication, the network side releases the corresponding radio bearer according to the determined bearer mode.

The method according to any one of claims 2 to 4, wherein the step a0 further comprises: the network selecting a dedicated frequency segment as the MBMS carrier allocated to the MBMS service separately.

The method according to any one of claims 2 to 4, wherein the MBMS carrier information in step a0 is notified to the UE through a broadcast channel or a control channel.

The method according to any one of claims 1 to 4, wherein the step of determining the bearer mode of the MBMS service is that the network side determines the bearer mode of the MBMS service by counting the counting process; or according to the MBMS service type. Directly determine the bearer mode of the MBMS service.

The method according to any one of claims 1 to 4, wherein the network side determines the bearer mode of the MBMS service by counting the counting process, and the counting process is performed on the MBMS carrier or in the non-MBMS. Performed on the carrier, or on both carriers of the MBMS carrier and the non-MBMS carrier.

9. The method according to claim 8, wherein the network side determines, according to network load and/or service characteristics, that the counting process is performed on the MBMS carrier, or on the non-MBMS carrier, or on the MBMS carrier and the non-MBMS carrier. Performed on two carriers.

The method according to any one of claims 1 to 4, wherein the indication information in step a2 is transmitted by using an MBMS carrier; or the service control information is sent by using an MBMS carrier; or service control information and The indication information is transmitted using the MBMS carrier.

The method according to any one of claims 1 to 4, wherein the service control information in step a2 is transmitted by using a MBMS carrier and a non-MBMS carrier.

The method according to claim 4, wherein the network side receives a session start indication of the MBMS service on the MBMS carrier; or

The method according to claim 4, wherein the step a3 further comprises: the network side sends a stop to receive the MBMS service notification to the UE, and the stop receiving the MBMS service notification is sent by using the MBMS carrier.

The method according to claim 4, wherein the step a3 further comprises: the network side notifying the UE to release the radio bearer by explicit signaling.

The method according to claim 4, wherein after step a3, the method further comprises: determining, by the network side, whether the UE is instructed to switch the frequency, and if yes, sending the The indication information of the specified frequency, or the indication information including the algorithm used by the specified UE for frequency selection.

16. The method according to claim 15, wherein the network side sends indication information to the UE on the MBMS carrier.

The method according to any one of claims 2 to 4, wherein the method further comprises: the network side notifying the UE of the separately allocated MBMS carrier information by using the MBMS carrier.

18. An MBMS service receiving method, characterized in that: the network side allocates a separate MBMS carrier and transmits an MBMS service on the allocated MBMS carrier; the method further comprises:

B21. The UE receives the service control information and the indication information of the current MBMS service; b22. The UE receives the current MBMS service according to the determined bearer mode on the MBMS carrier.

The method according to claim 18, wherein the step b21 further comprises:

B20. The UE subscribes to and joins the current MBMS service.

20. The method of claim 19, wherein the method further comprises:

B23. After receiving the MBMS service notification, the UE stops receiving the current MBMS service and releases the corresponding radio bearer.

The method according to claim 18, wherein the allocating a separate MBMS carrier on the network side and transmitting the MBMS service on the MBMS carrier specifically includes:

Bll. The network side notifies the UE of the separately allocated MBMS carrier information;

Bl2. After receiving the session start indication of the MBMS service session, the network side determines the bearer mode of the current MBMS service. The network side sends the service control information and the indication information to the UE, and establishes a bearer according to the determined bearer mode, and uses the allocated MBMS carrier to transmit the current MBMS service to the UE.

22. The method of claim 21, wherein the method further comprises:

The method according to claim 21 or 22, wherein the step M l further comprises: the network selecting a dedicated frequency segment as the MBMS carrier allocated to the MBMS service separately.

The method according to claim 21 or 22, wherein the MBMS carrier information in step bl l is notified to the UE through a broadcast channel or a control channel.

The method according to claim 21 or 22, wherein the determining the carrying mode of the MBMS service by the step M2 is that the network side determines the bearer mode of the MBMS service by counting the counting process; or directly determining the MBMS according to the MBMS service type. The way the service is carried.

The method according to claim 21 or 22, wherein in step bl2, the network side determines the bearer mode of the MBMS service by counting the counting process, and the counting process is performed on the MBMS carrier or on the non-MBMS carrier. Or on two carriers of MBMS carrier and non-MBMS carrier.

The method according to claim 26, wherein the network side determines, according to network load and/or service characteristics, that the counting process is performed on the MBMS carrier, or on the non-MBMS carrier, or on the MBMS carrier and the non-MBMS carrier. Performed on two carriers.

The method according to claim 21 or 22, wherein the indication information in the step bl3 is sent by using an MBMS carrier; or the service control information is MBMS. Carrier transmission; or service control information and indication information are all transmitted by using an MBMS carrier; in step b21, the UE receives indication information, or service control information, or service control information and indication information on the MBMS carrier.

The method according to claim 21 or 22, wherein, in the step M3, the service control information is sent by using each of the MBMS carrier and the non-MBMS carrier; in step b21, the UE is respectively in the MBMS carrier and the non-MBMS carrier. A part of the service control information is received.

30. The method according to claim 22, wherein the network side receives a session start indication of the MBMS service on the MBMS carrier; or

The method according to claim 22, wherein the step bl4 further comprises: the network side sends a stop receiving MBMS service notification to the UE, and the stop receiving MBMS service notification is sent by using the MBMS carrier.

The method according to claim 22, wherein the step M4 further comprises: the network side notifying the UE to release the radio bearer by explicit signaling.

The method according to claim 22, wherein the step M4 further comprises: determining, by the network side, whether to indicate the UE switching frequency, and if yes, sending the indication information including the specified frequency to the UE, or sending the message including the designated UE. Frequency selection The indication of the algorithm used.

34. The method according to claim 33, wherein the network side sends indication information to the UE on the MBMS carrier.

The method according to claim 21 or 22, wherein the MBMS service sending process further comprises: the network side notifying the UE of the separately allocated by using the MBMS carrier. MBMS carrier information.

The method according to any one of claims 19 to 22, wherein in step b20, the UE subscribes to the MBMS service and/or joins the MBMS service by using the MBMS carrier.

The method according to any one of claims 18 to 22, wherein the step b22 further comprises: the UE determining whether another service is performed, if not, the UE switching the frequency to the MBMS carrier, and performing step b22 If yes, if it is determined whether to receive the MBMS service or the non-MBMS service, if the MBMS service is received, the UE switches its own frequency to the MBMS carrier, and performs step b22. Otherwise, the process ends.

The method according to claim 37, wherein the determining whether there is another service is specifically: the UE determines whether there are other non-MBMS services through the paging process; and/or determines whether there are other by using the MBMS control information. MBMS business.

The method according to claim 20, wherein in step b23, the UE releases the corresponding radio bearer according to the network side indication, or decides to release the corresponding radio bearer by itself.

40. The method according to claim 20, wherein the step b23 further comprises: the UE switching to the specified frequency according to the network side indication, or the UE switching to the selected frequency according to the selection.

The method according to claim 33 or 40, wherein the frequency to which the UE is to be handed over is the original frequency of the UE itself, or the frequency determined by an algorithm that satisfies the UE to be uniformly distributed to the respective frequencies.

42. A system for implementing transmission and reception of an MBMS service, the system comprising:

UE, configured to receive service control of current MBMS service sent by the network side subsystem The information and the indication information are received, and the current MBMS service sent by the network side subsystem is received on the MBMS carrier according to the determined bearer mode.

The system according to claim 42, wherein the UE includes: a control information and an indication information receiving module, configured to receive service control information and indication information of a current MBMS service, query an MBMS carrier information storage module, and obtain MBMS carrier information, and output to the MBMS service receiving module;

MBMS carrier information storage module for storing MBMS carrier information;

44. The system according to claim 42 or 43, wherein the network side subsystem is further configured to: notify the UE of the separately allocated MBMS carrier information.

The system according to claim 42 or 43, wherein the network side subsystem is further configured to: after receiving the session stop indication, release the corresponding radio bearer according to the determined bearer mode.

The system according to claim 42 or 43, wherein the UE is further configured to: subscribe to and join the current MBMS service.

The system according to claim 42 or 43, wherein the UE is further configured to: after receiving the stop receiving MBMS service notification from the network side subsystem, stop receiving the current MBMS service and release the corresponding radio bearer. .

48. An apparatus for receiving an MBMS service, the apparatus, comprising: a control information and an indication information receiving module, configured to receive service control information and indication information of a current MBMS service, query an MBMS carrier information storage module, and obtain an MBMS carrier. Information, and output to the MBMS service receiving module;

An MBMS service receiving module, configured to receive module input according to control information and indication information The MBMS carrier information receives the MBMS service.

49. The device according to claim 48, wherein the device is further configured to: subscribe to and join the current MBMS service.

The device according to claim 48 or 49, wherein the device is further configured to: after receiving the stop receiving the MBMS service notification, stop receiving the current MBMS service and dry the corresponding radio bearer.