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Method, device and system for realizing transmission of multicast broadcast service data

A multicast broadcast service and data transmission technology, which is applied in the field of multicast broadcast service data transmission, can solve the problems of high CSI overhead, high overhead, and difficult implementation of beamforming weight algorithms, so as to improve coverage, Effect of increasing performance gain

Active Publication Date: 2010-01-27
XFUSION DIGITAL TECH CO LTD
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Problems solved by technology

[0004] However, the existing algorithm for calculating beamforming weights is technically difficult to implement, because the overhead of obtaining CSI estimates for all MBS receivers is very large, especially when there are a large number of receivers, CSI The overhead will become abnormally large, and the corresponding processing delay will make it impossible for the base station (BS) to obtain accurate and real-time CSI estimates
Moreover, for the conditions of different fading channels, the processing methods are the same, and good time diversity cannot be obtained. The existing technical solutions for MBS data transmission still need to be further improved and optimized.

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  • Method, device and system for realizing transmission of multicast broadcast service data
  • Method, device and system for realizing transmission of multicast broadcast service data
  • Method, device and system for realizing transmission of multicast broadcast service data

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Embodiment Construction

[0027] Embodiments of the present invention provide a method, device, and system for realizing multicast broadcast service (MBS) transmission. For different fading channel conditions, the MBS beamforming technology without time diversity technology or with time diversity technology is used to perform MBS data transmission. Transmission, so as to realize MBS data transmission simply and quickly.

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] For a specific MBS application, MBS receivers (ie, terminals) are usually randomly distributed in the sector of the base station, and the base station does not know the specific distribution location of the MBS receivers. In order to enable the base station to easily select the beam mode, the embodiment of the present invention provides a relati...

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Abstract

The invention relates to a method, a device and a system for realizing the transmission of multicast broadcast service data. The method comprises the following steps: selecting an optimal wave beam mode by training protocol; adopting a wave beam forming technique without time diversity or with time diversity carried to transmit the multicast broadcast service data. Therefore, the transmission of the multicast broadcast service data is realized simply and fast, and performance gain of the base station can be increased and the coverage area of the base station can be improved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, system and device for realizing multicast broadcast service data transmission. Background technique [0002] In the field of multicast broadcast service (MBS) wireless transmission technology, beamforming technology (beamforming) can be used in the transmitter to improve the received signal quality. Moreover, the beam pattern in which the transmitting power is concentrated in a specific direction can be obtained by performing complex weighting operations on the signals of the transmitting antenna units. [0003] At present, there are already many research results on the application of beamforming technology to MBS transmission. These achievements can be roughly divided into two categories: algorithms for calculating beamforming weights and protocols for data transmission to different receiver groups. [0004] However, the existing algorithm for calculati...

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Application Information

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IPC IPC(8): H04B7/08H04B7/06H04B1/707
Inventor 招溢利刘坚能郑树坤缪伟豪宋起涛
Owner XFUSION DIGITAL TECH CO LTD
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