Method for transmitting multimedia broadcast multicast service using multi-antenna system

A technology of multimedia broadcasting and multi-antenna system, applied in diversity/multi-antenna system, transmission system, space transmit diversity and other directions, can solve the problem of waste of system resources, and achieve the effect of improving reception gain and eliminating co-channel interference

Inactive Publication Date: 2008-07-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the TD-SCDMA system, the downlink time slot is up to 5 time slots. If this transmission method is used, only one MBMS service can be transmitted in one wireless frame, which causes a waste of system resources.

Method used

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  • Method for transmitting multimedia broadcast multicast service using multi-antenna system
  • Method for transmitting multimedia broadcast multicast service using multi-antenna system
  • Method for transmitting multimedia broadcast multicast service using multi-antenna system

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Embodiment Construction

[0019] Since TD-SCDMA is a smart antenna system, the main idea of ​​the present invention is to enable MBMS services to make full use of the advantages of eliminating interference and providing gains brought by the downlink beamforming technology of smart antennas, so as to reduce the requirements of MBMS on system resources.

[0020] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0021] In the following description, the method of the present invention is described by taking the transmission and reception of the MBMS service physical layer in the TD-SCDMA system as an example, wherein the transmitting end adopts multi-antenna downlink beam and time slot reuse method, and the receiving end adopts time slot diversity Or macro-diversity way to receive processing.

[0022] Such as figure 1 As shown, the method includes the following steps: step S102, a centrally motivated sector C1 is equally divided into N small sector...

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Abstract

The invention provides a method for transmitting multimedia broadcast multicast service by means of a multi-antenna system. The method comprises the following steps: firstly, a center-driven sector is equally divided into N small sectors; secondly, the data of the to-be-transmitted multimedia broadcast multicast service time slot of one of the small sectors is duplicated N times to form the data of N time slots; thirdly, according to the mode that each time slot is corresponding to a wavepacket, the layout of the data and the time slots of the sectors is completed; fourthly, subscriber equipment, which receives the signal of the N time slots, extracts the data of self subzone and transmits the extracted data to a demodulating module after merging the data. Through adopting the technical proposal, the invention increases the receiving gain of MBMS service of a single subzone and eliminates the problem of same frequency interference in broadcast channel service in TDD mode; therefore, MBMS service can meet the requirements of all-subzone coverage.

Description

technical field [0001] The invention relates to the communication field, in particular to a multi-antenna transmission method of MBMS (Multimedia Broadcast Multicast Service) in a wireless communication system, which is especially suitable for TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system. Background technique [0002] MBMS service is a high-speed one-way service transmitted in the form of broadcast or multicast, which can effectively transmit high-speed multimedia data to multiple users at the same time. MBMS requires that any user who activates this service in the entire cell can receive the content sent by this service. Since the point-to-multipoint mode (PtM) in MBMS uses the FACH (Forward Access Channel, Forward Access Channel) transmission channel, and is mapped to the S-CCPCH (Supplementary Common Control Physical Channel) physical channel for transmission, there is no uplink feedback information, The base station cannot obtain the locatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/02H04B1/707H04B7/06
Inventor 史凡邓亮冯波
Owner ZTE CORP
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