Multi-base-station cooperation communication method based on user pairing

A technology for user pairing and communication methods, applied in diversity/multi-antenna systems, space transmit diversity, etc., can solve the problems of paired user interference, paired user channel correlation, etc., achieve low overhead, improve communication quality, and increase space The effect of degrees of freedom

Inactive Publication Date: 2014-09-10
TSINGHUA UNIV
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  • Abstract
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Problems solved by technology

The disadvantage is that the channel correlation of paired users may be relatively large, and the interference between paired users is relatively large

Method used

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  • Multi-base-station cooperation communication method based on user pairing
  • Multi-base-station cooperation communication method based on user pairing
  • Multi-base-station cooperation communication method based on user pairing

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Embodiment

[0047] Embodiment: The schematic diagram of the communication scene in this embodiment is as follows figure 2 shown. In this embodiment, two base stations (two antennas per base station), four users (one antenna per user), and two 2×2 virtual MIMO for each group of users and base station antennas are used as an example

[0048] The specific steps of the multi-user pairing method mentioned in this embodiment are as follows:

[0049] (1) Four user sets are {UE 1 ,UE 2 ,UE 3 ,UE 4}, each user has one antenna, then the set of antennas at the user end is {AUE 1 ,AUE 2 ,AUE 3 ,AUE 4}, the subscript indicates the user antenna number; the set of two base stations is {BS 1 ,BS 2}, each base station has two antennas, then the multi-base station antenna set is {ABS 1 ,ABS 2 ,ABS 3 ,ABS 4}, the subscript indicates the antenna number of the base station;

[0050] (2) According to the uplink pilot signal from the user to the base station or the channel information fed back f...

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Abstract

The invention provides a multi-base-station cooperation communication method based on user pairing and belongs to the technical field of wireless communication. The method includes that base stations obtain channel information between each base station and each user according to uplink pilot signals of the users to the base stations or channel information which is fed back to the base stations by the users; the base stations perform pairing on base station antennae and user antennae according to the obtained channel information, and an antenna set which performs allied signal processing is determined; the users in each base station set are grouped, and virtual multiple input multiple output (MIMO) is formed to perform information transmission. The communication method is based on multi-base-station cooperation, communication qualities of community edges can be effectively improved, the space freedom degree is improved through introduction of more antennae, flexible antennae configuration is supported, communication combination partition can be adjusted according to different channel conditions, meanwhile, by means of user pairing, a high order MIMO system can be formed with low costs, and communication qualities can be further improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a communication method based on multi-base station cooperation based on user pairing. Background technique [0002] In an LTE-A system with co-frequency networking, the interference between adjacent cells limits the service quality and throughput of cell edge users. In order to further improve the spectrum utilization rate of the system and improve the service quality and throughput of users at the edge of the cell, it is necessary to use related technologies to effectively reduce the interference between cells. The Coordinated Multipoint (CoMP) transmission technology in the field of wireless communication is currently a promising technology for LTE-A. It can effectively avoid or reduce inter-cell interference while keeping the system's high spectrum utilization as much as possible. The most commonly used CoMP model is based on the baseband unit plus ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04
Inventor 粟欣曾捷容丽萍肖驰洋邢荣荣
Owner TSINGHUA UNIV
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