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Method and device for pre-coding coordinated-multiple-point transmission based on grouped wave beam

A multi-point cooperative and precoding technology, which is applied in transmission systems, digital transmission systems, and preventing/detecting errors through diversity reception, can solve problems such as loss of precision, and achieve the effect of improving performance and high-precision CoMP precoding processing

Active Publication Date: 2013-02-06
ZTE CORP
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  • Claims
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Problems solved by technology

This method uses codebook precoding processing, which will bring a certain loss in accuracy.

Method used

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  • Method and device for pre-coding coordinated-multiple-point transmission based on grouped wave beam
  • Method and device for pre-coding coordinated-multiple-point transmission based on grouped wave beam
  • Method and device for pre-coding coordinated-multiple-point transmission based on grouped wave beam

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Embodiment Construction

[0022] An embodiment of the present invention provides a method and device for CoMP precoding based on packet beams. The method includes: two adjacent base stations respectively use the same group of beams to scan in the covered cell, and search for the cell at the edge of the cell. The user is used as a CoMP potential pairing user, and obtains the information of the CoMP potential pairing user; each base station obtains the CoMP pairing user of this cell and the neighboring cell according to the information of the CoMP potential pairing user of the opposite cell obtained through interaction; each base station obtains the CoMP pairing user of the adjacent cell according to The constructed grouping beam matrix and the information of the CoMP pairing users of this cell determine the CoMP precoding matrix of the CoMP pairing users of this cell, wherein, the grouping beam matrix is ​​constructed according to the group of beams; when the CoMP pairing users of this cell and the adjace...

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Abstract

The invention discloses a method and a device for pre-coding CoMP (coordinated-multiple-point) transmission based on a grouped wave beam. The method comprises the following steps: using a group of wave beams to scan a community, searching a potential CoMP paired user and acquiring information of the potential CoMP paired user by a base station; between the adjacent base stations, by interchanging acquired information of a potential CoMP paired user of a counterpart community, determining the CoMP paired users of the community and the adjacent community, and then directly according to the configured grouped wave beam matrix and the information of the CoMP paired user of the community, determining a CoMP precoding matrix of the CoMP paired user of the community; and during communication of the CoMP paired users of the community and the adjacent community, precoding a signal of the CoMP paired user of the community by using the determined CoMP precoding matrix. Therefore, through adoption of the method and the device for pre-coding the CoMP transmission based on the grouped wave beam, high-efficiency and high-precision CoMP pre-coding can be achieved and the performances of the whole system is improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for multi-point coordinated transmission precoding based on packet beams. Background technique [0002] Coordinated Multiple Point (CoMP) technology is one of the important technologies for Long Term Evolution-Advanced (LTE-A) system to expand network edge coverage and ensure edge user Quality of Service (QoS). Unique technology of LTE-A system. CoMP technology exchanges mobile user channel information between adjacent base stations. Adjacent base stations adopt certain interference avoidance strategies for interfered users or multiple base stations jointly transmit mobile users, mainly for cell edge users to reduce edge user interference. , improve cell edge data throughput and spectrum utilization efficiency. [0003] In the LTE-A system, CoMP includes two scenarios: cooperation among base stations and distributed antenna system. From the per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04L1/00
Inventor 王衍文张庆宏
Owner ZTE CORP
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