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Method, device and system for configuring multimedia broadcast multicast service (MBMS) synchronization

A technology of BM-SC and synchronization sequence, applied in the field of communication, can solve problems such as the influence of MBMS service transmission process, and achieve the effect of improving the experience

Inactive Publication Date: 2011-04-13
CHINA ACAD OF TELECOMM TECH
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Problems solved by technology

[0017] When multiple consecutive synchronization data frames are lost, the out-of-synchronization base station stops sending synchronization data frames until the next synchronization cycle, which will have a great impact on the subsequent data frame transmission. Moreover, in the scenario of business multiplexing , the subsequent sending process of other MBMS services will also be seriously affected

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  • Method, device and system for configuring multimedia broadcast multicast service (MBMS) synchronization

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Embodiment Construction

[0087] The following will clearly and completely describe the technical solution of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0088] For the base station in the MBSFN area, if the MBMS service frames are continuously lost in the synchronization period, the MBMS service may be out of sync.

[0089] In the prior art, if only one frame is lost, the out-of-synchronization recovery will be performed according to the synchronization protocol; and if multiple MBMS service frames are lost continuously, according to the existing specification definition, the base station can only know the total amount of lost data, ...

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Abstract

The invention discloses a method for configuring multimedia broadcast multicast service (MBMS) synchronization, which comprises the following steps of: a network side device receives a synchronization control frame from a broadcast multicast service center (BM-SC), wherein the synchronization control frame carries the load conditions of data frames in the synchronizing sequence; the network side device determines the composition information of a radio link control (RLC) protocol data unit (PDU) according to the load conditions of the data frames in the synchronizing sequence; and when the data frames are lost, the network side device determines that the transmission of the data frames needs to be stopped according to the composition information of the RLC PDU. By using the invention, the out-of-step base station in the multimedia broadcast single frequency network (MBSFN) region can regain synchronization when continuously losing the synchronous data frames without influencing the transmission of subsequent MBMS services, thereby effectively enhancing the experience of the users receiving MBMS services in the MBSFN region.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and system for configuring MBMS synchronization. Background technique [0002] In the LTE (Long Term Evolution, Long Term Evolution) system, MBMS (Multimedia Broadcast Multicast Service, Multimedia Broadcast Multicast Service) is used to provide multimedia broadcast and multicast services for users in the wireless cell; MBMS can be provided on the frequency layer shared by non-MBMS services. Among them, the LTE cell that supports MBMS can be an MBMS dedicated cell, or a mixed MBMS and unicast cell; MBMS services can be transmitted in a single cell or in multiple cells; in addition, the multi-cell transmission of MBMS needs to support MBSFN transfer method. [0003] Specifically, MBSFN (Multicast Broadcast Single Frequency Network, Multicast Broadcast Single Frequency Network) refers to synchronous transmission in multiple cells at the same freque...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W56/00H04B7/26
CPCH04L1/1825H04L12/5895H04W4/06H04L12/189H04W28/04H04L51/38H04L1/008H04L2001/0097H04L51/58
Inventor 张大钧杨晓东
Owner CHINA ACAD OF TELECOMM TECH
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