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CoMP downlink dynamic cooperative cluster selection method based on SINR threshold and token

A collaborative cluster and token technology, which is applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as cluster selection conflicts, and achieve the effects of large collaboration gains, reduced interference, and improved efficiency

Inactive Publication Date: 2011-11-09
BEIHANG UNIV
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Problems solved by technology

By dynamically selecting a cooperative cluster based on the SINR threshold, and multiple base stations in the cluster perform cooperative downlink multi-antenna precoding transmission, the performance of the cell edge user can be improved; the conflict problem during cluster selection can be solved by transmitting and managing tokens

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  • CoMP downlink dynamic cooperative cluster selection method based on SINR threshold and token
  • CoMP downlink dynamic cooperative cluster selection method based on SINR threshold and token
  • CoMP downlink dynamic cooperative cluster selection method based on SINR threshold and token

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Embodiment Construction

[0043] The present invention is a CoMP downlink dynamic cooperative cluster selection method based on SINR threshold and token, and its specific embodiments are as follows.

[0044] In order to describe the technical solutions and advantages of the present invention in detail, the specific implementation manners of the present invention under 14 cell cooperation scenarios are given below. Such as figure 1 , assuming that each base station has two antennas and there are 4 users in each cell.

[0045] First, divide the 14 cells into two areas, Area A and Area B. Among them, cells 1-7 are area A, and cells 8-14 are area B. Base station 1 is determined to be a token management base station in area A, and base station 8 is determined to be a token management base station in area B

[0046]Each user in each cell calculates its own SINR according to the energy of the pilot signals it receives from each base station, and feeds back its own SINR uplink to the base station of the cel...

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Abstract

The invention provides a CoMP downlink dynamic cooperative cluster selection method based on an SINR threshold and a token, which belongs to the field of wireless communication and mobile communication. The method comprises the following steps: a cooperative cluster is determined according to the cell-edge signal-to-interference-and-noise-ratio (i.e., the poorest user of SINR) to ensure the performance of an edge user; a neighboring cell with maximum interference to the poorest user of SINR is selected for cooperation, and the cooperative gain is maximal; the SINR after user cooperation meetsthe criterion of a given threshold to determine the size of the cooperative cluster and the threshold can be flexibly adjusted so that a compromise is obtained between the performance and the complexity; and in addition, a cellular cell is divided into different areas, the token is issued in each area and the cooperative cluster is selected based on the token to avoid the problem of collision when different users synchronously select a cooperative cell.

Description

(1) Technical field [0001] The present invention relates to a method for dynamically selecting a multi-cell cooperative cluster during downlink transmission of a cellular cooperative communication system, and in particular to a coordinated multi-point transmission (Coordinated Multi-Point, CoMP) downlink dynamics based on a signal-to-interference-noise ratio (SINR) threshold and a token A cooperative cluster selection method belongs to the technical fields of mobile communication and wireless communication. (2) Background technology [0002] With the development of communication services and the growth of people's needs, future wireless communication systems need to support high speed and large capacity. There are several problems in the current cellular communication system, inter-cell interference is one of the more serious ones. Users located at the edge of a cell are easily interfered by adjacent cells, so the performance of users at the edge of the cell is very poor, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/16H04W72/04
Inventor 张千孙璨韩圣千杨晨阳王新
Owner BEIHANG UNIV
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