Multicast broadcast multimedia service user plane transmission path establishing method

Abstract

The invention discloses a user plane transmission channel establishing method for a multicast broadcasting multimedia service, which comprises the following steps: a multicast broadcasting multimedia service gateway obtains a tunnel endpoint identification TEID and an IP multicast address, and establishes a GPRS tunnel protocol user plane transmission channel based on the TEID; and an evolution base station obtains the TEID and the IP multicast address, and establishes the GPRS tunnel protocol user plane transmission channel based on the TEID. A SAE / LTE evolution network is also disclosed at the same time and comprises the multicast broadcasting multimedia service gateway, a multicast coordination entity and the evolution base station. By using the user plane transmission channel establishing method, the processing of a user plane data packet can be simplified, and the processing load of the system can be reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an SAE / LTE evolution network, and in particular to a method for creating a user plane transmission channel for multicast and broadcast multimedia services. Background technique [0002] With the development of the times, the needs of users for the types of services in the mobile communication system are becoming more and more abundant and diverse. In the R6 / R7 version of WCDMA, the MBMS multicast broadcast multimedia service was introduced. From a technical point of view, the MBMS service means that the network side sends the same multimedia service data to multiple receivers in the network at the same time. Correspondingly, one receiver The user end of MBMS service can receive one or more broadcast / multicast services at the same time. At present, MBMS services mainly include streaming media (such as video, videophone, etc.) and background services (such as text download)....

AI Technical Summary

Problems solved by technology

[0007] In the existing UMTS system, the transmission between SGSN and RNC adopts point-to-point IP unicast, and each RNC needs to provide its own IP address and TEID tunnel identifier to SGSN for a certain service. If there are N RNCs , when the SGSN wants to provide the same data for the N RNCs, the SGSN needs to create N GTP-U entities (GPRS tunnel protocol entities) for the service, that is to say, the SGSN needs to copy N copies of data and send them to corresponding RNC, which not only increases the processing load and buffer load of SGSN, but also wastes a lot of transmission resources

In addition, since the MBMS multicast broadcast multimedia service transport layer in the SAE / LTE system adopts the IP multicast method, that is, for a certain MBMS service, the MBMS GW uses a specific IP multicast address to send the same data to all eNBs that belong to the members of the IP multicast group, so the GPRS tunnel protocol data constructed by MBMS GW for each eNB is the same data, therefore, the implementation scheme in the existing UMTS system cannot be applied to the MBMS in the SAE / LTE system Establishment of User Plane Transmission Channels for Multicast and Broadcast Multimedia Services

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