WO2011134175A1

WO2011134175A1 - Control signaling processing in multimedia broadcast multicast service

Info

Publication number: WO2011134175A1
Application number: PCT/CN2010/072394
Authority: WO
Inventors: 王河; 戈丹·菲利普
Original assignee: 上海贝尔股份有限公司; 阿尔卡特朗讯
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2011-11-03
Also published as: CN102714582B; CN102714582A

Abstract

A solution is provided which solves inconsistency of the control signaling of Multimedia Broadcast Multicast Service (MBMS) when Evolution Universal Terrestrial Radio Access Network (EUTRAN) coexists with Universal Terrestrial Radio Access Network (UTRAN): according to the same MBMS, a broadcast multicast service center equipment does not distinguish the difference of the signaling standards of EUTRAN and UTRAN; to solve the problem, the control signaling from the broadcast multicast service center equipment is processed by a mobility management equipment or a multi-cell multicast coordination equipment to adapt to the interface of EUTRAN; for UTRAN, the control signaling from the broadcast multicast service center equipment is processed by a General Packet Radio Service (GPRS) supporting node to adapt to the interface of UTRAN if needed.

Description

Control signaling processing in multimedia broadcast multicast service

Technical field

The present invention relates to multimedia broadcast multicast services, and more particularly to control signaling in multimedia broadcast multicast services. Background technique

The Multimedia Broadcast Multicast Service (MBMS) is an important service type defined in the 3GPP Release 6 version and the current 3GPP Long Term Evolution (LTE). It can make full use of existing On the basis of the network, mobile multimedia services including mobile TV are provided. In the network topology where UTRAN and EUTRAN coexist simultaneously, the multimedia broadcast multicast service can be deployed in both UTRAN and EUTRAN. At the 3GPP WG meeting in the past, the user-level consistency problem when MBMS services are deployed in both UTRAN and EUTRAN has been discussed. That is, the same bearer is used for the same service session to send data from the core network to the radio access network, but The issue of consistency at the control level has not been discussed. Summary of the invention

The current MUT interface of the MBMS core network to the access network in EUTRAN

(3GPP TS36.444) and the standard of the core network to the access network Iu interface (3GPP TS25.413) in UTRAN can be seen that there is an inconsistency between the UMRAN MBMS control signaling and the EUTRAN control signaling. Considering that the broadcast multicast service center equipment (BMSC) from the core network for the same MBMS service session will only send out relevant control signaling without distinguishing the different access networks UTRAN and EUTRAN contained in the service area, so in UTRAN In the network topology that coexists with EUTRAN, there is an inconsistency in the current MBMS control signaling. In order to solve the problem of inconsistency, in one embodiment of the present invention, a solution is proposed: For the same multimedia broadcast multicast service, the broadcast multicast service center device does not distinguish between UTRAN and Different from the signaling standard of EUTRAN, the control signaling from the broadcast multicast service center device is processed by the mobility management device (MME) or the multi-cell multicast coordination device (MCE) to adapt to the interface of the EUTRAN; for UTRAN, for example It is necessary to process the control signaling from the broadcast multicast service center equipment by the Serving GPRS Support Node (SGSN) to accommodate the UTRAN interface.

According to an embodiment of the present invention, there is provided a method for processing MBMS control signaling in a mobility management device of a wireless communication network, comprising the steps of: the mobility management device receiving MBMS from a broadcast multicast service center device a session start message; determining whether the MBMS count information is included in the MBMS session start message; the MBMS count information is included in the MBMS session start message; and the mobile management device filters the count information in the MBMS session start message; The MBMS session start message for filtering the counting information is generated, and an MBMS session start message based on the M3 interface is generated, and the MBMS session start message based on the M3 interface is sent to the multi-cell multicast coordination device of the EUTRAN.

According to still another embodiment of the present invention, a method for determining whether to proceed is provided

The method for retransmitting the MBMS data includes the following steps: receiving an MBMS session start message from the mobility management device, including: MBMS session repetition number information in the read session start message; determining whether to perform the MBMS according to at least the MBMS session repetition number information Retransmission of the session.

Optionally, the method of determining whether to perform MBMS data retransmission may be implemented in a multi-cell multicast coordination device or a wireless network control device.

According to another embodiment of the present invention, there is provided a processing apparatus for processing MBMS control signaling in a mobility management device of a wireless communication network, comprising: a first receiving device, configured to receive from a broadcast multicast service center The MBMS session start message of the device, the first determining means, configured to determine whether the MBMS count information is included in the MBMS session start message, and the filtering means, configured to: if the MBMS count information is included in the MBMS session start message, filter the MBMS Counting information in the session start message; generating a transmitting device, configured to generate an MBMS session start message based on the M3 interface according to the MBMS session start message for filtering the count information, and the M3 interface is based on the M3 interface The MBMS session start message is sent to the multi-cell multicast coordination device.

According to another embodiment of the present invention, there is provided a retransmission determining apparatus for determining whether to perform MBMS data retransmission in a multi-cell multicast coordination device or a radio network control device (RNC) of a wireless communication network, including And a second receiving device, configured to receive an MBMS session start message from the mobility management device or the serving GPRS support node, where the session start message includes MBMS session repetition number information; and second determining means, configured to perform according to at least the MBMS session The number of repetitions information determines whether a retransmission of the MBMS session is performed.

By the method and the device of the invention, the problem of consistency of MBMS control signaling in the network topology structure in which UTRAN and EUTRAN coexist simultaneously is effectively solved, and the broadcast multicast service center device is prevented from being duplicated for UTRAN and EUTRAN. Sending the control signaling of the same MBMS session, and providing a technical solution for determining whether to perform the retransmission of the MBMS session according to the MBMS session repetition number information in the multi-cell multicast coordination device or the radio network control device, by using a technical solution, The multi-cell multicast coordination device or the wireless network control device is capable of efficient MBMS session retransmission. DRAWINGS

Other features, objects, and advantages of the invention will become apparent from the Detailed Description of Description

1 is a diagram showing an application scenario of a wireless communication system 100 in accordance with an embodiment of the present invention;

2 is a flow diagram of a method for processing MBMS control signaling in a mobility management device of a wireless communication network, in accordance with an embodiment of the present invention;

3 is a flow chart of a method for determining whether to perform MBMS data retransmission in a wireless communication network according to an embodiment of the present invention;

4 is a block diagram showing the structure of a processing apparatus for processing MBMS control signaling in a mobility management device of a wireless communication network according to an embodiment of the present invention;

FIG. 5 is a diagram of a wireless communication network according to an embodiment of the present invention. A block diagram of a retransmission determining apparatus for determining whether or not to perform MBMS data retransmission; wherein the same or similar reference numerals denote the same or similar step features or devices (modules). detailed description

The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. FIG. 1 shows an application scenario diagram of a wireless communication system 100 in accordance with an embodiment of the present invention. In the application scenario shown in FIG. 1, a broadcast multicast service center device (BMSC) 110 is connected to a content provider Provider 120, and the multimedia broadcast multicast service center device 110 is responsible for control signaling of the multimedia broadcast multicast service. And the transmission of business data. According to the 3GPP TS 23.246 standard, the broadcast multicast service center device 110 communicates with the multimedia broadcast multicast service gateway (MBMS GW) 130 via the SGmb interface (defined in 3GPP TS 29.061). The multimedia broadcast multicast service gateway 130 communicates with the mobility management device 140 (or the Mobile Management Entity, MME) and the monthly GPRS support node 150 through the Sm and Sn interfaces, respectively. The mobility management device 140 performs the M3 interface (defined in 3GPP TS 36.444) and the multi-cell multicast coordination device 160 (or Multi-cell/Multicast Cording Integration Entity, MCE) in the EUTRAN. Control level communication. The service GPRS support node 150 communicates with the wireless network control device 170 (or Radio Network Controller, RNC) via the Iu interface (defined in TS25.413, RANAP) for control level communication.

According to the 3GPP TS 23.246 standard, for a multimedia service session, the broadcast multicast service center device 110 generates and transmits MBMS session management related control signaling to the multimedia broadcast multicast service gateway 130. Control signaling such as an MBMS Session Start message, an MBMS Session Update message, and an MBMS Session End message, and the like. The multimedia broadcast multicast service gateway 130 routes the MBMS session management related control signaling to the mobility management device 140 and/or the serving GPRS support node 150 according to the service area. According to the current definition of the Gmb interface, the Iu interface, and the M3 interface, from the broadcast multicast service center device The difference between the control signaling of the MBMS of 110 to EUTRAN and the control signaling of the MBMS from the broadcast multicast service center device 110 to the UT AN is mainly due to the difference of the cells in the MBMS session start message, and the MBMS session update message ends with the MBMS session. basically the same.

Table 1 shows the main MBMS-related information element (IE) information in the MBMS session start message supported on the SGmb interface, the Iu interface, and the M3 interface, respectively.

Table 1

As can be seen from Table 1, the SGmb interface is the same as the cell supported by the Iu interface in the UTRAN. Compared with them, the M3 interface does not currently support the MBMS session repetition number, the MBMS count information, and the MBMS header compression indicator. .

In UTRAN, the MBMS count information is used to instruct the wireless network control device to count the number of user terminals that need to obtain the MBMS service, and at the same time, so that the wireless network control device determines whether to adopt the point-to-multipoint method or the point-to-point manner for the MBMS service. The transmission of data. The number of MBMS session repetitions refers to the number of times the business data of a session is repeatedly sent. The MBMS header compression indicator is used to indicate whether the header of the IP packet of the iHMB MBMS service data is compressed. In EUTRAN, MBMS services are transmitted in a point-to-multipoint manner and are not sent in a point-to-point manner. Therefore, the MBMS counting information is not required in EUTRA and does not define a corresponding network. Entity and processing are handled; MBMS service packets are also not compressed by IP headers. The multi-cell multicast coordination device may determine whether to perform MBMS data retransmission according to the number of MBMS session repetitions (described in detail below). Therefore, in the network topology in which UTRAN and EUTRAN coexist simultaneously, in order to obtain the consistency of the MBMS control signaling The broadcast multicast service center device 110 adopts the following strategy: in the MBMS session start message, the MBMS session repetition number and the MBMS count information are reserved in the actual situation, and the MBMS header compression indicator cell is not transmitted. Since the MBMS counting function is not supported in the EUTRAN, the mobility management device needs to process the MBMS session start message when receiving the MBMS session start message.

2 shows a flow chart of a method for processing MBMS control signaling in a mobility management device of a wireless communication network, in accordance with an embodiment of the present invention. The flow of the method of processing MBMS control signaling in the mobility management device 140 will be described in detail below with reference to FIG.

First, in step S201, the mobility management device 140 receives an MBMS Session Start message from the broadcast multicast service center device 110. The broadcast multicast service center device 110 transmits the MBMS session start message to the multimedia multicast broadcast service gateway 130 via the SGmb interface. The multimedia multicast broadcast service gateway 130 transmits the MBMS session start message to the mobility management device 140 via the Sm interface.

Next, in step S202, the mobility management device 140 determines whether the MBMS session start message contains the MBMS count information, that is, the MBMS count information.

Next, in step S203, if the MBMS session start message is included

The MBMS counts information, and the mobility management device 140 filters out the count information in the MBMS Session Start message.

Finally, in step S204, the mobility management device 140 generates an MBMS session based on the M3 interface according to the MBMS session start message of the filtering count information. The start message is sent to the multi-cell multicast coordination device 160 by the MMS interface-based MBMS session start message.

Certainly, for other MBMS control signaling, such as an MBMS session update and end message, the mobility management device 140 does not perform filtering processing, and converts the MBMS session update and end message into a message form based on the M3 interface, and then sends the message to the MMS interface. Cell multicast coordination device 160.

In an embodiment, if the MBMS session repetition number information is included in the MBMS session start message from the broadcast multicast service center device 110, the MBMS session start message based on the M3 interface should also include the MBMS session repetition number information.

In an embodiment, the MBMS session start message from the broadcast multicast service center device 110 includes MBMS session repetition number information, MBMS session identification information, and temporary mobility group identification information, where the temporary mobility group identification information is used to indicate each MBMS. Business sessions, newly started and retransmitted sessions are assigned a temporary mobile group identification information. The MBMS session identification information is mainly used to identify the temporary mobile group identification information that was previously allocated when a session is retransmitted, and may be the previous temporary mobile group identification information or the temporary mobile group identifier transmitted for the first time. information. Generally, the MBMS session identification information is used together with the MBMS session repetition number information, that is, when there is MBMS session identification information, there is necessarily an MBMS session repetition number information, and the identification access session is a retransmitted MBMS session and indicates that the retransmission has been repeated. . Of course, the MBMS session repetition number information can also be used alone. For example, the MBMS session repetition number information takes a value of zero to identify that the read session is a newly transmitted MBMS session.

Certainly, if the MBMS session start message from the broadcast multicast service center device 110 includes MBMS session repetition number information, MBMS session identification information, and temporary mobility group identification information, the MBMS session start message based on the M3 interface also includes the MBMS session. The repetition number information, the MBMS session identification information, and the temporary mobility group identification information are maintained for consistency.

3 shows a flow chart of a method for determining whether to perform MBMS data retransmission in accordance with an embodiment of the present invention. The method flow can be performed by the multi-cell multicast coordination device 160 in EUTRA i or the wireless network control device 170 in the UTRAN. The method of determining whether to perform MBMS data retransmission by the multi-cell multicast coordination device 160 or the radio network control device 170 in FIG. 3 will be described in detail below with reference to FIG.

First, in step S301, the multi-cell multicast coordination device 160 receives the MBMS session start message from the mobility management device, and includes the MBMS session repetition number information in the session start message. For the wireless network control device 170, it receives the MBMS session start message from the serving GPRS support node. Similarly, the message start message includes the MBMS session repetition number information.

Next, in step S302, the multi-cell multicast coordination device 160 or the wireless network control device 170 determines whether to perform retransmission of the MBMS session based on the MBMS session repetition number information. Specifically, the multi-cell multicast coordination device 160 or the wireless network control device 170 determines whether to perform retransmission of the MBMS session according to the MBMS session repetition number information, and is exemplified below.

In one embodiment, if the MBMS session is for the first time, the MBMS session repetition number is 0. If it is a retransmission, the MBMS session repetition number is the corresponding number of retransmissions. The multi-cell multicast coordination device 160 or the wireless network control device 170 may determine whether it is the first transmission or the retransmission according to the value of the MBMS session repetition number. If the MBMS session is a retransmission, the size is determined according to the value of the MBMS session repetition number. Whether to retransmit.

In one embodiment, the multi-cell multicast coordination device 160 or the wireless network control device 170 determines whether the number of MBMS session repetitions is greater than a first predetermined number of times and less than a second predetermined number of times. If the number of repetitions of the MBMS session is greater than the first predetermined number of times and less than the second predetermined number of times, the multi-cell multicast coordination device 160 determines not to perform retransmission of the MBMS session; if the number of repetitions of the MBMS session is greater than or equal to the second predetermined The number of times, then the multi-cell multicast coordination device 160 or the wireless network control device 170 determines to perform retransmission of the MBMS session.

In another embodiment, the multi-cell multicast coordination device 160 or the wireless network control device 170 determines whether the number of MBMS session repetitions is greater than or equal to a third predetermined number of times. If the number of repetitions of the MBMS session is greater than or equal to the third predetermined silver, the multi-cell multicast coordination device 160 or the wireless network control device 170 determines to determine not to perform reading. Retransmission of an MBMS session.

Optionally, the multi-cell multicast coordination device 160 or the wireless network control device 170 may further combine the priority of the MBMS session and/or the usage of the radio resource used for MBMS transmission on the basis of the MBMS session repetition number information. In particular, the remaining amount of radio resources for MBMS transmission is used to determine whether to perform retransmission of the MBMS session.

In one embodiment, at the time of retransmission, regardless of the number of retransmissions, only the priority of the Hello MBMS session is considered. If the priority of the MBMS session is higher, for example, above a predetermined priority level, the multi-cell multicast coordination device 160 or the wireless network control device 170 determines to perform retransmission of the MBMS session unconditionally; in the wireless for MBMS transmission In the case of insufficient resources, the transmission of other lower priority MBMS sessions is abandoned.

In an embodiment, when retransmitting, if the number of transmissions is greater than the first predetermined number of times and less than the second predetermined number of times, and the priority of the MBMS session is lower than a predetermined priority level, the multi-cell multicast coordination device 160 or The wireless network control device 170 determines not to perform retransmission of the MBMS session; otherwise determines to perform retransmission of the MBMS session.

In an embodiment, at the time of retransmission, if the number of transmissions is greater than a third predetermined number of times, and the priority of the MBMS session is lower than a predetermined priority level, the multi-cell multicast coordination device 160 or the wireless network control device 170 determines not to perform Retransmission of the iHMB MBMS session; determining to perform retransmission of the MBMS session.

In another embodiment, when retransmitting, regardless of the priority and the size of the retransmission number, only the use of radio resources is considered. If the remaining radio resources for the MBMS transmission are higher than the predetermined amount, it is determined that the retransmission of the MBMS session is performed, otherwise it is determined that the retransmission of the MBMS session is not performed.

In an embodiment, when retransmitting, if the number of transmissions is greater than the first predetermined number of times and less than the second predetermined number of times, and the remaining remaining radio resources for MBMS transmission are lower than or equal to the predetermined amount, determining not A retransmission of the MBMS session is performed, otherwise, a retransmission of the MBMS session is determined to be performed.

In an embodiment, when retransmitting, if the number of transmissions is greater than a third predetermined number of times and the remaining radio resources for MBMS transmission are lower than or equal to a predetermined amount, determining not to perform A retransmission of the MBMS session is performed, otherwise, a retransmission of the MBMS session is determined to be performed. In still another embodiment, at the time of retransmission, regardless of the number of retransmissions, the priority and the remaining radio resources for MBMS transmission are comprehensively considered. Retransmission of the MBMS session is determined to be performed if the priority of the MBMS session is higher than the predetermined priority level and the remaining radio resources for MBMS transmission are higher than the predetermined amount, otherwise it is determined that retransmission is not performed.

Alternatively, the multi-cell multicast coordination device 160 or the wireless network control device 170 may comprehensively consider the number of MBMS session retransmissions, the priority, and the remaining radio resources for MBMS transmission to determine whether to perform retransmission of the MBMS session.

In an embodiment, if the priority of the MBMS session is lower than the predetermined priority and the number of retransmissions is greater than the third predetermined number of times, and the remaining radio resources for MBMS transmission are lower than the predetermined amount, then The multi-cell multicast coordination device 160 or the wireless network control device 170 determines not to perform retransmission of the MBMS session.

In still another embodiment, if the priority of the MBMS session is lower than a predetermined priority level, and the MBMS session repetition number is greater than the first predetermined number of times and less than the second predetermined number of times, and the remaining radio resources for MBMS transmission When the amount is lower than the predetermined amount, the multi-cell multicast coordination device 160 or the wireless network control device 170 determines not to perform retransmission of the MBMS session; otherwise, it determines to perform retransmission of the MBMS session.

In another embodiment, if the priority of the MBMS session is lower than a predetermined priority level, and the number of MBMS session repetitions is greater than or equal to the second predetermined number of times, and the remaining radio resources for MBMS transmission are higher than the predetermined amount At this time, the multi-cell multicast coordination device 160 or the wireless network control device 170 determines to perform retransmission of the MBMS session; otherwise, it determines that retransmission of the MBMS session is not performed.

In an embodiment, if the multi-cell multicast coordination device 160 or the wireless network control device 170 determines to retransmit the MBMS session, determine the transmission sequence within the transmission period for the MBMS session, and reallocate the radio resources, and The transmission sequence determined by the multi-cell multicast coordination device 160 or the base station under the control of the radio network control device 170 (ie, the eNodeB or the NodeB) and the allocated radio resources are notified. The transmission sequence here refers to the transmission of service data of multiple MBMS sessions in one transmission cycle, one The order in which the business data is transmitted in the MBMS session. A transmission cycle may be 320ms, 40ms, etc., depending on the parameters of the actual MBMS system. Once the order of transmission of an MBMS session within a transmission period is determined, the transmission sequence remains unchanged until a new session join or other ongoing session ends.

If the multi-cell multicast coordination device 160 or the wireless network control device 170 determines not to perform retransmission of the MBMS session, the multi-cell multicast coordination device 160 or the wireless network control device 170 ignores the MBMS session start message and broadcasts to the broadcast. The service center device feeds back the MBMS session start failure message.

4 is a block diagram showing the structure of a processing device 400 for processing MBMS control signaling in a mobility management device of a wireless communication network, in accordance with an embodiment of the present invention. In FIG. 4, the processing device 400 includes a first receiving device 401, a first determining device 402, a filtering device 403, and a generating transmitting device 404.

The process of processing the MBMS control signaling by the processing device 400 located in the mobility management device 140 will be described in detail below with reference to the application scenario diagram shown in FIG.

First, the first receiving device 401 receives the information from the broadcast multicast service center device 110.

MBMS session start message. The broadcast multicast service center device 110 transmits the MBMS session start message to the multimedia multicast broadcast service gateway 130 via the SGmb interface. The multimedia multicast broadcast service gateway 130 transmits the MBMS session start message to the mobility management device 140 via the Sm interface.

Next, the first determining means 402 determines whether the MBMS session start message contains the MBMS count information, that is, the MBMS count information.

Next, if the MBMS session start message contains MBMS count information, the filtering means 403 filters out the count information in the MBMS Session Start message. :

Finally, the generating sending device 404 generates an MBMS session start message based on the M3 interface according to the MBMS session start message of the filtering count information, and sends the MMS interface-based MBMS session start message to the multi-cell multicast coordination device 160. .

Of course, for other MBMS control signaling, such as an MBMS session update and end message, the mobility management device 140 does not perform filtering processing to the MBMS session. The update and end messages are converted to the M3 interface based message form and sent to the multi-cell multicast coordination device 160.

In an embodiment, the MBMS session start message from the broadcast multicast service center device 110 further includes MBMS session repetition number information, and the MBMS session start message based on the M3 interface also includes MBMS session repetition number information.

In an embodiment, the MBMS session start message from the broadcast multicast service center device 110 includes MBMS session repetition number information, MBMS session identification information, and temporary mobility group identification information, and the MMS interface based MBMS session start message is also included. The MBMS session repetition number information, the MBMS session identification information, and the temporary mobility group identification information are included.

Figure 5 is a block diagram showing the structure of a retransmission determining apparatus 500 for determining whether to perform MBMS data retransmission in accordance with an embodiment of the present invention. In Fig. 5, the retransmission determining means 500 includes a second receiving means 501, a second determining means 502, and a determined allocation notifying means 503, wherein the determined allotting notifying means 503 is an optional means.

The working process of the retransmission determining apparatus 600 located in the multi-cell multicast coordination device 160 or the wireless network control device 170 will be described in detail below with reference to the application scenario shown in FIG.

First, the second receiving device 501 receives an MBMS session start message, and the session start message includes MBMS session repetition number information. If the retransmission determining device 500 is located in the multi-cell multicast coordination device 160, the MBMS session start message is from the mobility management device 140; if the retransmission determining device 500 is located in the wireless network control device 170, the MBMS session start message is forgotten It is from the Serving GPRS Support Node 150.

Next, the second determining means 502 determines whether or not to perform retransmission of the MBMS session based on the MBMS session repetition number information. Specifically, the second determining means 502 determines, according to the MBMS session repetition number information, whether there are multiple strategies for performing retransmission of the MBMS session, which will be exemplified below.

In one embodiment, if the MBMS session is the first transmission, the value of the number of MBMS session repetitions is 0, and if it is a retransmission, the number of MBMS session repetitions is the corresponding number of retransmissions. The second determining means 502 can be based on the value of the number of MBMS session repetitions It is determined whether it is the first transmission or the retransmission. If the MBMS session is a retransmission, it is determined whether to retransmit according to the value of the value of the MBMS session repetition number.

In one embodiment, second determining means 502 determines if the number of MBMS session repetitions is greater than a first predetermined number of times and less than a second predetermined number of times. If the number of repetitions of the MBMS session is greater than the first predetermined number of times and less than the second predetermined number of times, the second determining means 502 determines not to perform retransmission of the read MBMS session; if the number of repetitions of the MBMS session is greater than or equal to the second predetermined number of times, Then the second determining means 502 determines to perform retransmission of the MBMS session.

In another embodiment, the second determining means 502 determines if the number of read MBMS session repetitions is greater than or equal to a third predetermined number of times. If the MBMS session repetition number is greater than or equal to the third predetermined number of times, the second determining means 502 determines not to perform retransmission of the MBMS session.

Optionally, the second determining means 502 may further determine whether to perform retransmission of the MBMS session based on the MBMS session repetition number information, further combining the priority of the MBMS session and/or the remaining radio resources for MBMS transmission.

In one embodiment, at the time of retransmission, regardless of the number of retransmissions, only the priority of the MBMS session is considered. If the priority of the MBMS session is higher, 'for example, above a predetermined priority level, the second determining means 502 determines to perform retransmission of the MBMS session unconditionally; in case the remaining radio resources for MBMS transmission are insufficient Next, abandon the transmission of other lower priority MBMS sessions.

In an embodiment, at the time of retransmission, if the number of transmissions is greater than the first predetermined number of times and less than the second predetermined number of times, and the priority of the MBMS session is lower than the predetermined priority level, the second determining means 502 determines not to perform Forgive the retransmission of the MBMS session.

In one embodiment, at the time of retransmission, if the number of transmissions is greater than the third predetermined number of times, and the priority of the read MBMS session is lower than the predetermined priority level, the second determining means 502 determines not to perform retransmission of the MBMS session.

In another embodiment, in retransmission, regardless of the priority and the number of retransmissions, only the remaining radio resources for MBMS transmission are considered. If the remaining radio resources for MBMS transmission are higher than the predetermined amount, the second determining means 502 determines to perform the Retransmission of the MBMS session, otherwise it is determined that the retransmission of the MBMS session is not performed.

In an embodiment, at the time of retransmission, if the number of transmissions is greater than the first predetermined number of times and less than the second predetermined number of times, and the remaining radio resources for MBMS transmission are lower than or equal to the predetermined amount, the MBMS is not executed. The retransmission of the session, otherwise, the retransmission of the iHam MBMS session is performed.

In one embodiment, at the time of retransmission, if the number of transmissions is greater than the third predetermined number of times and the remaining radio resources for MBMS transmission are lower than or equal to the predetermined amount, the second determining means 502 determines not to perform the weight of the MBMS session. Pass, otherwise, it is determined to perform a retransmission of the read MBMS session.

In still another embodiment, in retransmission, regardless of the number of retransmissions, the priority and remaining radio resources for MBMS transmission are considered. Retransmission of the MBMS session is determined to be performed if the priority of the MBMS session is above a predetermined priority level and the remaining radio resources for MBMS transmission are above a predetermined amount, otherwise it is determined that retransmission is not performed.

Alternatively, the second determining means 502 may determine whether to perform retransmission of the MBMS session by considering the number of MBMS session retransmissions, the priority, and the remaining radio resources for MBMS transmission.

In one embodiment, if the priority of the MBMS session is lower than the predetermined priority and the number of retransmissions is greater than the third predetermined number of times, the second determining means 502 determines not to perform retransmission of the MBMS session; Determine to perform a retransmission of the MBMS session.

In still another embodiment, in another embodiment, if the priority of the MBMS session is lower than a predetermined priority level, and the number of repetitions of the MBMS session is greater than the first predetermined number of times and less than the second predetermined number of times, and remaining When the radio resource for MBMS transmission is lower than the predetermined amount, the second determining means 502 determines not to perform retransmission of the MBMS session; otherwise, it determines to perform retransmission of the MBMS session.

In another embodiment, if the priority of the MBMS session is lower than a predetermined priority level, and the number of repetitions of the MBMS session is greater than or equal to the second predetermined number of times, and the remaining radio resources for MBMS transmission are higher than the predetermined amount When the determining device 502 determines to perform retransmission of the MBMS session; otherwise, the MBMS session is not executed. Retransmission.

In one embodiment, if the second determining means 502 determines to perform retransmission of the MBMS session, it is determined that the allocation notifying means 503 determines the transmission order within the transmission period for the MBMS session, and reallocates the radio resources, and notifies the multi-cell. The transmission sequence determined by the base station (ie, eNodeB) administered by the multicast coordination device 160 and the allocated radio resources. The transmission sequence here refers to the transmission sequence of service data of one MBMS session and the transmission sequence of service data of one MBMS session in one transmission period. A transmission cycle may be 320ms, 40ms, etc., depending on the parameters of the actual MBMS system. Once the order of transmission of an MBMS session within a transmission period is determined, the transmission sequence remains unchanged until a new session join or other ongoing session ends. '

It should be noted that the values of the predetermined parameters such as the first predetermined number of times, the second predetermined number of times, the third predetermined number of times, the predetermined priority level, and the predetermined amount may be different according to the actual implementation of the actual system. For example, in one embodiment, the second predetermined number of times and the third predetermined number of times may be the same; in different embodiments, the values of the respective predetermined parameters may be different.

It should be noted that the above-described embodiments are merely exemplary and not limiting of the invention. Any technical solution that does not depart from the spirit of the present invention should fall within the scope of the present invention. In addition, any reference signs in the claims should not be construed as limiting the claims. The word "comprising" does not exclude the means or steps that are not listed in the other claims or the description; Excluding the existence of a plurality of such devices; in a device comprising a plurality of devices, it is understood that the functionality of one or more of the plurality of devices can be implemented by the same hardware or software module; "first", "second", "Third,, etc., are used only to refer to names, and do not denote any particular order.

Claims

Claim

A method for processing MBMS control signaling in a mobility management device of a wireless communication network, comprising the steps of:

- receiving an MBMS session start message from a broadcast multicast service center device;

Determining whether MBMS count information is included in the MBMS session start message; - filtering the count information in the MBMS session start message if the MBMS count message is included in the MBMS session message;

- generating an MBMS session start message based on the M3 interface according to the MBMS session start message for filtering the count information, and transmitting the MBMS session start message based on the M3 interface to the multi-cell multicast coordination device.

The method according to claim 1, wherein the MBMS session start message included in the broadcast multicast service center device includes the MBMS session repetition number information, and the M3 interface-based MBMS session start message is also included. The MBMS session repetition number information.

The method according to claim 2, wherein, if the MBMS session identification message and the temporary mobility group identification information are included in the MBMS session start message from the broadcast multicast service center device, the MMS interface-based MBMS session starts. The MBMS session identification information and temporary mobility group identification information are also included in the message.

4. A method for determining whether to perform MBMS data retransmission, comprising the following steps:

- Receive an MBMS session start message from the mobility management device, and include the MBMS session repetition number information in the session start message;

- determining whether to perform retransmission of the MBMS session based on at least the MBMS session repetition number information.

5. The method according to claim 4, further comprising the following steps:

- if it is determined that retransmission is performed, the transmission sequence in the transmission period is determined for the session, and the radio resources are re-allocated, and the transmission sequence and allocation determined by the multi-cell multicast coordination device or the base station under the control of the radio network control device are notified. Wireless resources.

6. The method according to claim 4, wherein the determining step comprises the following steps:

- determining whether the MBMS session repetition number is greater than a first predetermined number of times and less than a second predetermined number of times;

Determining that the session retransmission is not performed if the number of MBMS session repetitions is greater than a first predetermined number of times and less than a second predetermined number of times;

7. The method according to claim 4, wherein the determining step comprises the following steps:

- determining whether the number of MBMS session repetitions is greater than or equal to the second predetermined number of times;

- Performing a retransmission of the session if the number of MBMS session repetitions is greater than or equal to the second predetermined number of times.

8. The method according to claim 4, wherein the determining step comprises the following steps:

- determining whether the number of repetitions of the MBMS session is greater than or equal to a third predetermined number of times;

- If the number of MBMS session repetitions is greater than or equal to the third predetermined number of times, the session retransmission is not performed.

9. The method according to claim 4, wherein the determining step further comprises the following steps:

- determining whether to perform retransmission of the MBMS session based on the MBMS session repetition number information and in conjunction with the priority of the MBMS session.

10. The method according to claim 4, wherein the determining step further comprises the following steps:

- determining whether to perform retransmission of the MBMS session based on the MBMS session repetition number information and in conjunction with the remaining radio resources for MBMS transmission.

The method according to claim 4, wherein the determining step further comprises the following steps:

Determining whether to proceed according to the MBMS session repetition number information and in combination with the priority of the MBMS session and the remaining radio resources for MBMS transmission Retransmission of the MBMS session.

The method according to claim 4, wherein the method is implemented in a multi-cell multicast coordination device or a wireless network control device of a wireless communication network.

13. A processing apparatus for processing MBMS control signaling in a mobility management device of a wireless communication network, comprising:

a first receiving device, configured to receive an MBMS session start message from a broadcast multicast service center device;

a first determining means, configured to determine whether MBMS count information is included in the MBMS session start message;

a filtering device, configured to: if the MBMS count information is included in the MBMS session start message, filtering out the counting information in the MBMS session start message;

And generating, by the sending device, an MBMS session start message based on the M3 interface according to the MBMS session start message for filtering the count information, and sending the MBMS session start message based on the M3 interface to the multi-cell multicast coordination device. '

14. A retransmission determining apparatus for determining whether to perform MBMS data retransmission, comprising:

a second receiving device, configured to receive an MBMS session start message from the mobility management device, where the session start message includes MBMS session repetition number information;

The second determining means is configured to determine whether to perform retransmission of the MBMS session according to at least the MBMS session repetition number information.

The retransmission determining apparatus according to claim 14, wherein the retransmission determining means is located in a multi-cell multicast coordination device or a wireless network control device of the wireless communication network.