Method for dynamically generating multimedia broadcast multicast single frequency network (MBSFN) operating domain, and multimedia broadcast multicast service coordinate entity (MCE)

Abstract

The invention discloses a method for dynamically generating a multimedia broadcast multicast single frequency network (MBSFN) operating domain, and a multimedia broadcast multicast service coordinate entity (MCE). The method comprises the following steps of: determining a topology geometrical model corresponding to topological structure information according to the topological structure information of cells in an MBSFN service domain; scanning the topology geometrical model in a first direction and a second direction which are intersected with each other respectively; configuring the cells configured as a type B among neighbor cells which are configured as a type A and the type B respectively in a scanned area as a type C according to initial configuration in the scanning process, configuring the cells in which user equipment (UE) subscribes to a multimedia broadcast multicast service (MBMS) as the type A in the initial configuration, and configuring the cells in which the UE does notsubscribe to the MBMS as the type B; and configuring the cells configured as the type C as the type A after the scanning is finished, and generating the MBSFN operating domain which is formed by the cells configured as the type A. The method optimizes the generating mode of the MBSFN operating domain, and realizes downlink macro diversity gain under the condition of saving power resources.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for dynamically generating an MBSFN (Multimedia Broadcast multicast service Single Frequency Network, Multimedia Broadcast Multicast Service Single Frequency Network) operation domain and an MCE (MBMS Coordinate Entity, Multimedia Broadcast Multicast Service Coordination Entity) . Background technique [0002] 3GPP (The 3rd Generaion Partnership Project, 3rd Generation Partnership Project) defines the network structure and service requirements of MBMS (Multimedia Broadcast Multicast Service, Multimedia Broadcast Multicast Service), supports point-to-multipoint services, in order to achieve the same The transfer of data from one data source to multiple destinations. [0003] E-MBMS (Evolved Multimedia Broadcast Multicast Service, Evolved Multimedia Broadcast Multicast) introduces a transmission mode of SFN (Single Frequency Network, single frequenc...

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Problems solved by technology

[0015] Although the above method is beneficial to improve air interface efficiency, save power resources, and improve the utilization rate of wireless resources, it cannot meet the downlink macro-diversity gain in the MBSFN operating domain in the dynamic management requirements of the MBSFN operating domain because it only considers whether the UE subscribes to MBMS service information. Therefore, "SFN holes" and "SFN islands" cannot be avoided. SFN holes refer to a certain cell, although its neighboring cells have opened MBMS transmission channels, but because it is located in the central area of ​​the MBSFN service domain, the transmission of unicast services will be serious. Affect MBMS transmission of surrounding cells. SFN island means that although a certain cell has enabled MBMS transmission, there are few surrounding cells that have enabled MBMS transmission, and cannot obtain good downlink macro-diversity gain, which will greatly affect MBMS reception performance

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