MBMS transmission method and device for multi-carrier wave mobile communication system

Abstract

The present invention relates to a method for transmitting MBMS in a multi-carrier wave system and a device. A transmitting side MAC-m maps MTCH loaded with the same MBMS to an FACH channel and establishes a Iub transmitting bearer; by modifying two ends of the Iub transmitting bearer, a first mapping module at an entrance end of Iub is an MBMS data packet to be transmitted and splitting identification is set in the extension field of FACH FP frame structure according to preset rules, mapping relationship exists between the splitting identification and SCCPCH; a second mapping module at the exit end of the Iub maps the received MBMS data packet on a plurality of SCCPCHs which are configured on a plurality of carrier wave resources according to the splitting identification to realize that after the multi-carrier wave system and an MBMS service data packet are split, the multi-carrier wave system is parallelly transmitted on a plurality of the carrier wave resources. The physical layer of UE receiving side receives the MBMS data packet on a plurality of SCCPCH carrier wave resources, and sends the MBMS data packet to a higher layer by an FACH to form the same MBMS service data. The splitting identification can be SCCPCH-ID or a numerical symbol TSN or a preset sequence. The multi-carrier wave resources are fully utilized to improve the MBMS transmission speed, thus reducing the receiving time of terminals and saving power.

Description

technical field [0001] The present invention relates to the data transmission technology of the mobile communication system, more specifically to the method and device for transmitting Multimedia Broadcast Multicast Service (MBMS, Multimedia Broadcast Multicast Service) data in a multi-carrier system. Background technique [0002] The Multimedia Broadcast Multicast Service (MBMS) was introduced in 3GPP Release6. MBMS refers to a point-to-multipoint service, in which one data source sends data to multiple users, and is used to realize the sharing of core network and access network resources, especially the sharing of air interface resources. MBMS defined by 3GPP can not only realize plain text low-rate message multicast and broadcast, but also realize high-rate multimedia service multicast and broadcast. [0003] The protocol adds new channels for the system to implement MBMS functions, including: MBMS notification indicator channel (MICH, MBMS notification Indicator Channel...

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Problems solved by technology

[0023] To sum up, the existing 3GPP system does not introduce multi-carrier mode. The protocol only describes the MBMS transmission process of a single-carrier system. The same MBMS service can only be transmitted on one carrier, which affects the transmission rate of MBMS services and increases the number of terminal UEs. receiving time, which increases the power consumption of the terminal

For multi-carrier mobile communication systems, such as multi-carrier TD-SCDMA systems, the characteristics of multi-carrier resources should be fully utilized to transmit MBMS service data, but the existing MBMS transmission scheme for single-carrier systems cannot be used for multi-carrier systems

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