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Method, system and equipment for realizing synchronization of multicast/broadcast service (MBS) of multi-hop system

A multicast broadcasting and business technology, applied in the field of communication, can solve the problems of data packet sending failure, MBS data packet sending failure, sending, etc.

Inactive Publication Date: 2010-06-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] After analyzing the existing technology, the inventor found that: the determination of the system frame number synchronization of the current cellular communication system is only determined on the basis of the frame synchronization of each eNB, without considering its multi-hop characteristics, therefore, the following may occur Problem: When the eNB receives the MBS service data packet and knows the system frame number of the MBS service data packet it will send, if the eNB receives the MBS service data packet and sends the system frame number of the MBS service data packet, the time interval between If it is less than the time interval from eNB receiving the MBS service data packet to forwarding the MBS data packet to other lower-level stations, it will cause the failure of sending the data packet
For example, the system frame number of the eNB receiving the MBS service data packet is 8, and the system frame number of the MBS service data packet to be sent is 9, then the distance between the eNB receiving the MBS service data packet and the system frame number of sending the MBS service data packet The time interval is 1; if the system frame number of the eNB forwarding the MBS data packet to other lower-level stations is 10, then the time interval from eNB receiving the MBS service data packet to forwarding the MBS data packet to other lower-level stations is 2; at this time , the MBS service data packet is sent at the same time when the system frame number is 9, and the station under the eNB can only receive the data packet when the system frame number is 10. , sending the MBS service data packet, resulting in failure to send the MBS data packet

Method used

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  • Method, system and equipment for realizing synchronization of multicast/broadcast service (MBS) of multi-hop system

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Embodiment 1

[0056] The embodiment of the present invention provides a method for synchronizing multicast and broadcast MBS services in a multi-hop system. The method can ensure that all MBS data packets have arrived at each MR-BS and each intermediate station under each MR-BS before starting the MBS service. Following the RS, the successful transmission of the MBS service data packet is ensured, and the MBS service synchronization of each MR-BS in the entire MBS cell is realized.

[0057] For ease of description, the embodiment of the present invention takes a 2-hop system as an example to specifically describe how to realize the synchronization of MBS services of a multi-hop system in multiple cells. It is assumed that there are two MR-BSs in the entire MBS cell: MR-BS 1 and MR-BS - BS 2, wherein there is one relay RS 1 under MR-BS 1 and one relay RS 2 under MR-BS 2. see figure 2 , both MR-BS 1 and MR-BS 2 are connected to the MBS gateway, there is a relay RS 1 under MR-BS 1, and the r...

Embodiment 2

[0081] The embodiment of the present invention provides a method for synchronizing multicast broadcast MBS services in a multi-hop system. In the embodiment of the present invention, there are two MR-BSs under the MBS cell: MR-BS 1 and MR-BS 2, wherein, MR - There is a trunk branch under BS 1, and the trunk branch includes a trunk RS 1, and there is a trunk branch under MR-BS 2, and there are two trunk RS 2 and RS in the branch 3 as an example to describe the method provided in the embodiment of the present invention in detail.

[0082] see Figure 4 , both MR-BS 1 and MR-BS 2 are connected to the MBS gateway, MR-BS 1 is connected to relay RS 1, and relay RS 1 is directly connected to users; MR-BS 2 is connected to relay RS 2, and relay RS 2 Connect to relay RS 3, and connect to users under relay RS 3. see Figure 5 , and its specific implementation process is as follows:

[0083] 201: MR-BS 1 obtains the processing delay T1 of its subordinate relay RS 1, and MR-BS 2 obtai...

Embodiment 3

[0107] An embodiment of the present invention provides a system for realizing synchronization of multicast and broadcast MBS services in a multi-hop system, see Figure 6 , the system includes: MBS gateway, base station and relay branch; wherein, there are multiple base stations;

[0108] The MBS gateway is used to receive the maximum processing delay reported by each base station; obtain the MBS service sending time according to the maximum processing delay reported by each base station and the transmission delay from the MBS gateway to the base station; send the MBS service sending time to each base station ;

[0109] The base station is used to obtain the maximum processing delay of each cell; report the obtained maximum processing delay to the MBS gateway; receive the MBS service sending time issued by the MBS gateway; send the MBS service data packet to the relay according to the MBS service sending time Branch road;

[0110] The relay branch is used to receive the MBS ...

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Abstract

The invention discloses a method, a system and equipment for realizing the synchronization of a multicast / broadcast service (MBS) of a multi-hop system, which belong to the field of communication. In the multi-hop system of a plurality of cells, the method comprises the following steps: acquiring a maximum processing delay of the cells by base stations of each cell; reporting the acquired maximum processing delay to an MBS gateway; receiving an MBS transmitting time transmitted by the MBS gateway; and transmitting an MBS data packet to each of relay branches of the base stations according to the MBS transmitting time. The system comprises the MBS gateway, the base stations and the relay branches. The equipment comprises the MBS gateway, the base stations and a relay. The method, the system and the equipment fully take the processing delays of each cell into consideration, thereby ensuring that the MBS data packet can be prepared in advance when the MBS of each stage of stations are initiated, enabling the MBS data packet to be transmitted successfully, and realizing transmitting the MBS data packet to a user synchronously.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, a system and a device for realizing synchronization of multicast broadcast MBS services of a multi-hop system. Background technique [0002] MBS (Multi-cast Broadcast Service, multicast broadcast service) is a practical technology to improve spectrum utilization efficiency, widely used in 3G (3rd Generation, third-generation digital communication) systems, and in TD-SCDMA (TimeDivision Synchronous Code Division Multiple Access, Time Division Synchronous Code Division Multiple Access) system and WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access) system have also begun to be applied, in the future 4G (4th Generation, fourth generation digital communication) In the system, such as LTE+ (Long Term Evolution+, long-term evolution technology+) will also be applied on a large scale. [0003] For the MBS service, since its service is a multicast br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W56/00H04B7/26
Inventor 曾云宝
Owner HUAWEI TECH CO LTD