WO2012010049A1

WO2012010049A1 - Mbms service delivery method and system

Info

Publication number: WO2012010049A1
Application number: PCT/CN2011/076768
Authority: WO
Inventors: 胡剑; 毛磊; 王斌; 马子江
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-07-21
Filing date: 2011-07-01
Publication date: 2012-01-26
Also published as: CN102340735B; CN102340735A

Abstract

The present invention discloses a Multimedia Broadcast Multicast Services (MBMS) delivery method and system. The method comprises: a first network element delivers to one or multiple second network elements an MBMS delivery location information; the second network element judges, on the basis of the location information, whether or not an MBMS delivery is required for a cell under the control of the second element. The present invention increases the utilization rate of wireless resources, and avoids wastage of emission power.

Description

Method and system for transmitting MBMS service

The present invention relates to a Long Term Evolution (LTE) system, and more particularly to a method and system for transmitting a Multimedia Broadcast Multicast Service (MBMS). Background technique

With the rapid development of the Internet and the popularity of large-screen multi-function mobile phones, there have been a large number of mobile data multimedia services and various high-bandwidth multimedia services, such as: video conferencing, television broadcasting, video on demand, advertising, online education, interactive games, etc. This aspect meets the rising business needs of mobile users, and on the other hand brings new business growth points for mobile operators. These mobile data multimedia services require multiple users to receive the same data at the same time, and have the characteristics of large data volume, long duration, and delay sensitivity compared with general data services.

In order to effectively utilize mobile network resources, the 3rd Generation Partnership Project (3GPP) proposes an MBMS service, which is a technology that transmits data from one data source to multiple targets, and implements the network (including The sharing of resources between the core network and the access network improves the utilization of network resources (especially air interface resources). MBMS defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service broadcast and multicast, providing a variety of rich video, audio and multimedia services, which undoubtedly conforms to future mobile The trend of data development provides a better business prospect for the development of 3G.

Currently, MBMS services are introduced in the Long Term Evolution Version 9 (LTE R9) system. The MBMS service carries the common transmission of control signaling and user data in the system to implement. The control signaling will inform the receiving end (or the terminal, User Equipment (UE)) The control parameters should be directed to the UE to receive the MBMS service (ie corresponding user data) of interest. The MBMS control signaling (control information) is transmitted through the Multicast Control Channel (MCCH) in the LTE R9 system, and the MBMS service is performed through a Multicast Traffic Channel (MTCH). Transmission. Specifically, the MBMS control signaling (ie, MCCH information) transmitted on the logical channel MCCH mainly includes: a multicast resource of a MBSF over a Single Frequency Network (MBSFN) area corresponding to the MCCH information, where All ongoing (MB) MBMS services in the MBSFN area, as well as configuration and attribute information of the ingoing MBMS service.

The MBMS control signaling (MCCH information) and the MBMS service are transmitted in the range of the MBSFN area; the MCCH and the MBSFN area are correspondingly, that is, the MCCH information content corresponding to the different MBSFN areas is different; The MBSFN area consists of a series of cells. Specifically, one MBSFN area includes one or more cells controlled by an evolved base station (eNB). 1 is a schematic diagram of a conventional MBSFN area. As shown in the figure, the MBSFN area includes 19 cells, where cell 1 to cell 6 are cells controlled by eNB1; cell 7 to cell 13 are cells controlled by eNB2; cell 14 to Cell 19 is a cell controlled by eNB3.

In the prior art, the control signaling and the user data are sent in the MBSFN area in units of cells or eNBs, and the MBSFN technology is used for synchronous transmission (the purpose is to enable the UE to obtain the corresponding combining gain when receiving), therefore, The MBSFN technology requires each cell in the MBSFN area to transmit the same data content on the same time-frequency resource. Therefore, it is necessary to uniformly schedule and plan resources of each cell. In the prior art, a multi-cell/multicast coordination entity (MCE) network element is used for unified scheduling and planning of radio resources. For specific implementation, reference may be made to the international standard 3GPP 36.300 v910. Specifically, an MCE controls the transmission of the MBMS service in the entire MBSFN area, that is, the MCE determines the The MBMS service transmitted on the MBSFN subframe of the MBSFN area, and the eNB controls the transmission of the MBMS service of each cell under its control.

The cell is the basic concept in the field of wireless communication, which logically indicates the coverage of the wireless signal. The cell is planned by the operator when performing network deployment. Each cell has its unique identifier Cell ID, and its Cell ID will pass. The BCCH (Broadcast Control Channel) information is transmitted in the cell; the UE can obtain the Cell ID of the cell by reading the BCCH information; the eNB also has its own identity eNB ID, which can be identified by different eNB IDs. eNB device; a tracking area (TA, Track Area) composed of a group of cells is mainly used for paging on the network side; this group of cells will have the same TA value, and the tracking area code (TAC) The form of the Track Area Code is transmitted on the BCCH of each cell; the UE can know the location of the TA by itself by reading the tracking area code in the BCCH information.

According to the prior art, the MBSFN area is planned by the operator, and we can also think that the MBSFN area will not change or be difficult to change once it is planned. Among them, the MBMS service will be sent in the entire MBSFN area. Considering the special attributes of some MBMS services: for example, the local MBMS service, the MBMS service only needs to be sent in some cells in the MBSFN area, that is, the area to be sent by the local MBMS service is smaller than the entire MBSFN area, as shown in FIG. Schematic diagram of the local MBMS service transmission range. The MBSFN area is a cell included in a solid circle, and a plurality of cells filled with a hatched shadow indicate a transmission range required for the local MBMS service. However, in the prior art, all cells in the MBSFN area send the local MBMS service.

It can be seen that for a specific local MBMS service in the MBSFN area, transmission in the entire MBSFN area is unnecessary; and the local MBMS service is performed in one or some cells in the MBSFN area that should not be transmitted. Sending, undoubtedly reduces the utilization of wireless resources, and caused a waste of transmission power. Summary of the invention

In view of this, the main object of the present invention is to provide a method and system for transmitting an MBMS service, which can improve the utilization of radio resources and avoid waste of transmission power.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A method for transmitting an MBMS service, the method comprising:

The first network element sends the location information sent by the MBMS service to one or more second network elements. The second network element determines, according to the location information, whether the cell controlled by the UE needs to send the MBMS service.

The first network element is a multi-cell cooperative entity (MCE), or a broadcast multicast service center (BM-SC), or an MBMS gateway (MBMS GW), or a mobility management unit (MME).

The second network element is a base station (eNB), and/or a relay station (Relay).

The plurality of second network elements are located in the same MBSFN area.

The location information includes one or more of the following information: cell information sent by the MBMS service, second network element information sent by the MBMS service, tracking area (TA) information sent by the MBMS service, and coordinate information sent by the MBMS service.

The cell information is a cell identifier (Cell ID);

When the second network element is an eNB, the second network element information is an eNB ID; when the second network element is a relay, the second network element information is a Relay ID;

The TA information is a tracking area code (TAC);

The coordinate information includes latitude and longitude and a transmission radius.

Determining, by the second network element, whether the cell controlled by the UE needs to send the MBMS service according to the location information, specifically:

Receiving, by the base station or the relay station, the location information sent by the first network element, and determining, according to the location information, whether the cell controlled by the UE needs to send the MBMS service; or

Receiving, by the base station, location information sent by the first network element, and determining, according to the location information, Whether the cell that is controlled by itself needs to send the MBMS service; and the received location information is forwarded to the relay station, and the relay station determines, according to the location information, whether the cell controlled by the UE needs to send the MBMS service.

The second network element determines, according to the location information, whether the cell controlled by the UE needs to send the MBMS service, specifically:

When the location information is the same as the second network element information of the second network element, determining that all cells controlled by the second network element need to send the MBMS service; or

When the location information is the same as the cell information of the partial cell controlled by the second network element, determining that the partial cell needs to send the MBMS service; or

When the location information is the same as the TA information of all or part of the cells controlled by the second network element, it is determined that all or part of the cells need to send the MBMS service; or

When the location information is consistent with the coordinate information of all or part of the cells controlled by the second network element, it is determined that all or part of the cells need to send the MBMS service.

The location information is consistent with coordinate information of all or part of cells controlled by the second network element, and is specifically:

The coverage area indicated by the coordinate information of the cell belongs to the coverage area of the MBMS service transmission indicated by the coordinate information in the location information.

After the second network element determines whether the cell controlled by the network needs to send the MBMS service, the method specifically includes:

Transmitting, by the second network element, the location information into location identifier information sent by the MBMS service;

All cells controlled by the second network element send the location identification information to the corresponding terminal by using control information.

The control information includes one or more of the following information: MCCH information, BCCH information, SIB2 information, SIB13 information, MSI information. A system for transmitting an MBMS service, the system includes: a first network element and a second network element, where:

The first network element is configured to send location information sent by the MBMS service to one or more of the second network elements;

The second network element is configured to determine, according to the location information, whether the cell controlled by the UE needs to send the MBMS service.

The first network element is an MCE, or a BM-SC, or an MBMS GW, or an MME; and the second network element is an eNB and/or a relay station.

The plurality of second network elements are located in the same MBSFN area.

The system also includes: a terminal;

Correspondingly, the second network element is further configured to: convert the location information into location identifier information sent by the MBMS service, and send, by the control information, all the cells controlled by the location to the corresponding terminal.

The control information includes one or more of the following information: MCCH information, BCCH information, SIB2 information, SIB13 information, MSI information.

The sending scheme of the MBMS service of the present invention sends the location information of the MBMS service to the second network element in the MBSFN area by using the first network element, so that the second network element can determine which needs of the cell controlled by the second network element according to the location information. The MBMS service is sent, and the MBMS service is not required to be sent. Therefore, the second network element can control the cell that needs to send the MBMS service to perform the MBMS service transmission, and solves the problem that all the cells in the MBSFN area send the MBMS service in the prior art. The resulting reduction in the utilization of radio resources and the waste of transmission power. DRAWINGS

Figure 1 is a schematic diagram of the MBSFN area;

2 is a schematic diagram of a transmission range of a local MBMS service; 3 is a schematic flowchart of a method for transmitting an MBMS service according to the present invention;

4 is a schematic diagram of a transmission range of an MBMS service according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a transmission range of an MBMS service according to Embodiment 2 of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a system for transmitting an MBMS service according to the present invention. detailed description

The technical solutions of the present invention are further elaborated below in conjunction with the accompanying drawings and specific embodiments. The method for sending the MBMS service according to the present invention is shown in FIG. 3, and includes:

Step 301: The first network element sends the location information sent by the MBMS service to one or more second network elements.

The first network element may be a Multi-cell/Multicast Coordination Entity (MCE), or a Broadcast-Multicast-Service Centre (BM-SC), or an MBMS Gateway (MBMS GW, Preferably, the first network element in the embodiment of the present invention is an MCE. The first network element itself can generate location information of the MBMS service transmission, and the first network element itself can generate the location information of the MBMS service. The prior art is not described here.

The second network element is a base station (eNB), and/or a relay station (Relay). Preferably, in the embodiment of the present invention, the second network element is an _e NB.

It should be noted that the multiple second network elements are located in the same MBSFN area, that is, the MCE may send the location information of the MBMS service transmission to all or multiple eNBs in one MBSFN area (for the convenience of subsequent description, the location information is simply referred to as location information). ).

The second network element (eNB) in the MBSFN area means that the coverage area of the cell controlled by the second network element belongs to the MBSFN area.

The location information includes one or more of the following information: cell information sent by the MBMS service, second network element information sent by the MBMS service, tracking area (TA) information sent by the MBMS service, and coordinate information sent by the MBMS service. . The cell information refers to information used to uniquely identify a cell, and may be a cell identifier.

(Cell ID), of course, can also be any other information that can uniquely identify a cell.

The second network element information is used to uniquely identify a second network element. When the second network element is an eNB, the second network element information may be an eNB ID. When the second network element is a Relay, the second network element information is a second network element. It can be a Relay ID; of course, it can be any other information that can uniquely identify a second network element.

The TA information refers to the TAC. If the group of cells forms a TA, each cell in the TA has the same TAC.

The coordinate information includes the latitude and longitude and the transmission radius, which indicates the coverage area sent by the MBMS service.

Step 302: The second network element determines, according to the location information, whether the cell controlled by the UE needs to send the MBMS service.

The second network element that receives the location information performs the determination to determine which cells it controls to transmit the MBMS service. The second network element is eNB and / or Relay, and the judgment here includes the following cases:

1. The eNB or the relay receives the location information sent by the first network element, and determines, according to the location information, whether the cell controlled by the UE needs to send the MBMS service;

2. The eNB receives the location information sent by the first network element, and determines whether the cell controlled by the UE needs to send the MBMS service according to the location information; and forwards the received location information to the Relay, and the relay determines, according to the location information, whether the cell controlled by the UE needs to be sent. Said MBMS business.

According to the location information sent by the MBMS service, the second network element determines whether the cell controlled by the second network element needs to send the MBMS service, specifically:

If the location information is the same as the second network element information of the second network element, it is determined that all the ds and areas controlled by the second network element need to send the MBMS service, thereby determining that the location information includes the second network element information; or If the location information is the same as the cell information of the part of the cell controlled by the second network element, determining that the part of the cell needs to send the MBMS service, thereby determining that the location information includes the cell information; or

If the location information is the same as the TA information of all or part of the cells controlled by the second network element, it is determined that all or part of the cells need to send the MBMS service, thereby determining that the location information includes the TA information; or

If the location information matches the coordinate information of all or part of the cells controlled by the second network element, it is determined that all or part of the cells need to transmit the MBMS service, thereby determining that the location information includes coordinate information.

Here, the so-called coincidence means that the coverage area indicated by the coordinate information of the cell ({latitude and longitude, radius }) belongs to the coverage area of the MBMS service transmission indicated by the coordinate information ({latitude and longitude, radius }) in the position information.

Therefore, the second network element can control the cell that needs to send the MBMS service to perform the MBMS service transmission, which not only improves the utilization of the radio resources, but also avoids the waste of the transmission power.

The method of the present invention may further include the step 303: all the cells controlled by the second network element send the location identification information (referred to as location identification information) sent by the MBMS service converted by the location information to the corresponding terminal by using the control information.

The terminal obtains the location identification information through the control information; the terminal can know whether the cell in which the cell is in the MBMS service is sent by the location identifier information; if the cell sends the MBMS service, the terminal can autonomously (human participation) or automatic (terminal behavior, no Receiving the MBMS service by human participation; realizing the function of transmitting the specific area of the MBMS service and receiving the specific area of the terminal, enhancing the directivity of the terminal receiving the MBMS service; if the cell does not send the MBMS service, the terminal does not receive the MBMS service The service blocks the relevant MBMS service information (not reflected on the human-computer interaction interface), and realizes the function of automatically blocking the information by the terminal.

Whether the cell controlled by the second network element needs to send an MBMS service, the second network element controls All cells will send location identification information to the corresponding terminal on their control information.

The control information includes one or more of the following information: MCCH information, BCCH information, System Information Block (SIB) 2 information, SIB 13 information, Multicast Channel (MCH, Multicast Channel) scheduling information ( MSI, MCH Scheduling Information).

For the location identification information, because the location information sent by the first network element to the second network element cannot be recognized by the terminal, the second network element needs to convert the location information to perform the location identification information, and therefore, the two The substance is the same, and is used to indicate the coverage area of the MBMS service transmission, but only in terms of expression and application range. The so-called application scope refers to: the location information is used for the first network element to be sent to the second network element phase; the location identification information is used for the cell to be sent to the terminal phase.

When the second network element converts the location information, the conversion method of the prior art can be used, and details are not described herein again.

Hereinafter, the technical solution of the present invention will be described by way of specific embodiments.

FIG. 4 is a schematic diagram of a transmission range of an MBMS service according to an embodiment of the present invention, where a cell filled with a slanted line is a coverage area (that is, a location information sent by an MBMS service) sent by an MBMS service, that is, these cells need to send an MBMS service. The location information is generated by the first network element, and is generally configured by the operator on the first network element. The first network element may be an MCE, or a BM-SC, or an MBMS GW, or an MME.

The operator configures the MBSFN area. As shown in FIG. 4, according to the prior art, the MBMS service will be sent in the entire MBSFN area. When the method of the present invention is used, the first network element (the present embodiment Example MCE) generates the MBMS service (in the present embodiment, an example MBMS service 1) transmits the location information transmitted, the location information to all or a portion of a second network element in the MBSFN area (in the present embodiment, an example _e NB ).

The location information of the MBMS service 1 may include one or more of the following information. The cell information sent by the MBMS service, the second network element information sent by the MBMS service, the TA information sent by the MBMS service, and the coordinate information sent by the MBMS service. In this embodiment, the cell information (Cell ID) is taken as an example, and the location information includes a number of Cell IDs, specifically a set of Cell lDs, such as {Cell ID 1 , Cell ID 2, Cell ID 3 , Cell ID 4, ....Cell ID n}„

As shown in FIG. 4, when the eNB that controls the cell A receives the location information, the cell A is in accordance with its own Cell lD (the Cell lD is configured by the operator when the cell is established, and belongs to the cell-specific parameter; Cell ID of cell A is called Cell ID A). Compared with the location information of MBMS service 1, the location information of MBMS service 1 is found {Cell ID 1 , Cell ID 2, Cell ID 3 , Cell ID 4, .... Cell The ID ID is not included in the ID n}; that is, the location information indicates that the cell A is not within the range transmitted by the MBMS service 1; therefore, it can be determined that the cell A does not transmit the MBMS service 1.

Taking the position information as the coordinate information as an example, it is assumed that the position information includes a plurality of {(X, y), radius}, where X longitude and y are latitudes; determining whether the coverage area indicated by {coordinate, radius} of cell eight belongs to The coverage area or the effective area transmitted by the MBMS service 1 indicated by a plurality of {(X, y), radius} in the location information. As can be seen from FIG. 4, if the above determination result is no, the cell A does not need to transmit the MBMS service 1.

For cell X, based on its own Cell ID X and the location information {Cell ID 1 , Cell ID 2, Cell ID 3 , Cell ID 4, ....Cell ID n} of MBMS service 1, it can be found that Cell IDX contains Within the location information; that is, the location information indicates that cell X is within range of MBMS service 1 transmission; therefore, Cell X needs to send MBMS service 1.

Considering the control information (the MCCH information is taken as an example in this embodiment), the MBSFN combining technology is used for transmitting in the MBSFN area; therefore, all cells controlled by the eNB receiving the location information need to send the location identification information to the terminal through the control information. . For example, both the cell A and the cell X need to send the scheduling information of the MBMS service 1 and the location identification information of the MBMS service 1 to the corresponding terminal through the MCCH information. If there are multiple MBMS services, the manner of carrying the location identification information on the MCCH information is: {MBMS service 1, location information 1}, {MBMS service 2, location information 2}, {MBMS service 3, location information 3}, ..... {MBMS business n, location information n}. And each location information can be {Location 1, Location 2, ... Location m}.

Specifically, {position 1, position 2, ... position m} can be: {Cell ID 1, Cell ID 2,

Cell ID 3, Cell ID 4, ....Cell IDn}, or {{ (xl, yl ), radius 1}, { (x2, y2 ), radius 2}, .... { ( xn, yn ) , radius n}}, and so on.

FIG. 5 is a schematic diagram of a transmission range of an MBMS service according to Embodiment 2 of the present invention, where a cell filled with a slash is a coverage area sent by an MBMS service, that is, these cells need to send an MBMS service.

The operator configures the MBSFN area. As shown in FIG. 5, according to the prior art, the MBMS service will be sent in the entire MBSFN area. When the method of the present invention is used, the first network element (the present embodiment The MCE is used as an example. The location information of the generated MBMS service (in the embodiment, the MBMS service 2 is taken as an example) is sent to all or part of the second network element in the MBSFN area (the eNB is taken as an example in this embodiment).

The location information of the MBMS service 2, in this embodiment, takes the second network element information (eNB ID) as an example, and assumes that the location information includes a plurality of eNB IDs, specifically, a set of eNB IDs,

As shown in FIG. 5, the cells 1, 2, 3, and 4 belong to the eNB1 control (the corresponding second network element information is the eNB ID1), and the cells 5, 6, 7, and 12 belong to the eNB2 control (the corresponding second network element information is eNB ID2), the cells 8, 9, 10, 11 belong to the eNB3 control (the corresponding second network element information is the eNB ID3), and the cells 13, 14, 15, 16 belong to the eNB4 control (the corresponding second network element information is the eNB ID4) ).

As shown in FIG. 5, the eNB 4 performs location information of the MBMS service 2 according to its own eNB ID 4 (the eNB ID is an eNB-specific parameter configured by the operator when the eNB is established). For comparison, it is found that the location information { eNB ID 1 , eNB ID 2 , and eNB ID 3 } of the MBMS service 2 does not include the eNB ID 4; that is, the location information indicates that the eNB 4 is not in the range of sending the MBMS service 2; therefore, the eNB 4 does not transmit MBMS service 2, that is, all cells 13, 14, 15, 16 controlled by eNB4 do not need to transmit MBMS service 2.

For eNB1, the eNB4 compares the location information of the MBMS service 2 with the eNB ID1 of the eNB1, and finds that the location information {eNB ID 1, eNB ID2, eNB ID 3 } of the MBMS service 2 includes the eNB ID1; that is, the location information It is indicated that eNB1 is within the range of transmitting MBMS service 2; therefore, eNB1 transmits MBMS service 2, that is, all cells 1, 2, 3, and 4 controlled by eNB1 need to transmit MBMS service 2.

Considering the control information (the MCCH information is taken as an example in this embodiment), the MBSFN combining technology is used for transmitting in the MBSFN area; therefore, all cells controlled by the eNB receiving the location information need to send the location identification information to the terminal through the control information. . For example, all cells controlled by eNB4 and eNB1 need to send scheduling information of MBMS service 2 and service location identification information through MCCH information.

In order to implement the foregoing method, the present invention further provides a sending system for an MBMS service, as shown in FIG. 6, comprising: a first network element and a second network element, where:

The first network element is configured to send the location information sent by the MBMS service to the one or more second network elements, where the second network element is configured to determine, according to the location information, whether the cell controlled by the UE needs to send the MBMS service.

The first network element is an MCE, or a BM-SC, or an MBMS GW, or an MME; and the second network element is an eNB and/or a Relay.

In particular, the plurality of second network elements are located in the same MBSFN area.

The system also includes: a terminal;

Correspondingly, the second network element is further configured to: convert location information into location identifier information sent by the MBMS service, and send, by the control information, all the cells controlled by the location to the location identifier information by using the control information. Corresponding terminal. The control information includes one or more of the following information: MCCH information, BCCH information, SIB2 information, SIB13 information, and MSI information.

In addition, the second network element determines whether the cell controlled by the UE needs to send the MBMS service, as described in step 302 of FIG. 3, and details are not described herein again.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A method for transmitting a multimedia broadcast and multicast service (MBMS) service, the method comprising:

2. The method for transmitting an MBMS service according to claim 1, wherein the first network element is a multi-cell cooperative entity (MCE), or a broadcast multicast service center (BM-SC), or an MBMS gateway (MBMS). GW), or mobility management unit (MME).

The method for transmitting an MBMS service according to claim 1, wherein the second network element is a base station (eNB), and/or a relay station.

The method for transmitting an MBMS service according to claim 1 or 3, wherein the plurality of second network elements are located in the same MBSFN area.

The method for transmitting an MBMS service according to claim 1, wherein the location information includes one or more of the following information: cell information sent by the MBMS service, and second network element information sent by the MBMS service, The tracking area (TA) information sent by the MBMS service and the coordinate information sent by the MBMS service.

The method for transmitting an MBMS service according to claim 3 or 5, wherein the cell information is a cell identifier (Cell ID);

The TA information is a tracking area code (TAC);

The method for transmitting an MBMS service according to claim 6, wherein the second network element determines, according to the location information, whether a cell controlled by itself needs to send the MBMS. Business, specifically including:

Receiving, by the base station, location information sent by the first network element, determining, according to the location information, whether the cell controlled by the UE needs to send the MBMS service, and forwarding the received location information to the relay station, where the relay station Determining, according to the location information, whether the cell controlled by the UE needs to send the MBMS service.

The method for transmitting an MBMS service according to claim 7, wherein the second network element determines, according to the location information, whether the cell controlled by the UE needs to send the MBMS service, specifically:

The method for transmitting an MBMS service according to claim 8, wherein the location information is consistent with coordinate information of all or a part of cells controlled by the second network element, specifically: The coverage area belongs to the coverage area of the MBMS service transmission indicated by the coordinate information in the location information.

The method for transmitting an MBMS service according to claim 1 or 9, wherein, after the second network element determines whether the cell controlled by the second cell needs to send the MBMS service, the method specifically includes: Transmitting, by the second network element, the location information into location identifier information sent by the MBMS service;

The method for transmitting an MBMS service according to claim 10, wherein the control information comprises one or more of the following: a multicast control channel (MCCH) information, a broadcast control channel (BCCH) information, SIB2 information, SIB13 information, multicast channel scheduling information

( MSI ).

12. A system for transmitting an MBMS service, the system comprising: a first network element and a second network element, where:

The transmitting system of the MBMS service according to claim 12, wherein the first network element is an MCE, or a BM-SC, or an MBMS GW, or an MME;

The second network element is an eNB and/or a relay station.

The system for transmitting MBMS services according to claim 13, wherein the plurality of second network elements are located in the same MBSFN area.

The system for transmitting MBMS services according to claim 12, wherein the system further comprises: a terminal;

16. The system for transmitting an MBMS service according to claim 15, wherein: The control information includes one or more of the following information: MCCH information, BCCH information, SIB2 information, SIB13 information, MSI information.