Method for introducing MBMS service identification

Abstract

A method for introducing multimedia broadcast and multicast service identifiers, comprising steps: UE distributes RAB identifiers for MBMS services; UE sends RAB identifiers for MBMS services to SGSN; SGSN notifies RNC of the corresponding relationship. The UE, RNC and SGSN can know the corresponding relationship between the MBMS service and the RAB identifier through the method that the UE allocates and transmits the RAB identifier for the MBMS service to the SGSN and the method that the SGSN sends the mapping relation to the RNC provided by the present invention. When the RNC transmits MBMS data through the PTP mode, the existing mechanism can be utilized to the maximum extent, the realization of the MBMS in the RNC equipment in the PTP mode can be simplified, and the commercialization process of the MBMS can be accelerated. When the RNC notifies the UE of the MBMS service through the DCCH, the RAB identifier is used to avoid or reduce the modification of the existing air interface message and ensure a unified processing model for the UE. When the existing RNC does not support the MBMS service, the existing method can be adopted directly, so that the equipment has good backward compatibility.

Description

technical field [0001] The invention relates to a wideband code division multiple access (hereinafter referred to as WCDMA) mobile communication system, in particular to a method for introducing a new multimedia broadcast and multicast service (hereinafter referred to as MBMS) identification. Background technique [0002] Multimedia Broadcast and Multicast Service (hereinafter referred to as MBMS) is a new service being standardized by the Third Generation Partnership Project (hereinafter referred to as 3GPP). The MBMS service is a one-way point-to-multipoint service. The biggest feature of this service is that it can effectively utilize wireless resources and network resources. Different from existing services, the MBMS service can be transmitted in two ways: point-to-point (hereinafter referred to as PTP) or point-to-multipoint (hereinafter referred to as PTM) on the air interface. [0003] figure 1 The MBMS system structure is described. The MBMS network structure is ba...

AI Technical Summary

Problems solved by technology

The information element "RAB ID" in these messages must exist, but currently no NSAPI and RAB ID are allocated for MBMS services; at the same time, when MBMS services are transmitted in PTP mode, it affects the processing of existing UEs

[0031] (2) In the existing RNC equipment, different services are identified according to the RAB mark in the protocol. If the transmission mode of the MBMS service is PTP, there is no RAB mark corresponding to the MBMS service for the MBMS service, which will cause interference to the existing There are a lot of changes to the equipment

[0032] (3) If the RNC does not support the MBMS service, when the SGSN uses the Rel99 / Rel4 or Rel5 process to establish the Iu user plane for the UE, there is no corresponding NSAPI available, and there is no correspondence between the NSAPI and the RAB identifier, and the UE cannot distinguish between the corresponding The business corresponding to the carried data

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