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Joint virtual MIMO resource allocation method based on dynamic multi-cell user pairing

A technology of user pairing and resource allocation, applied in the field of communication, can solve problems such as low system spectrum utilization rate, inaccessibility, large system spectrum utilization rate, etc., to improve system communication quality, maximize frequency utilization rate, and efficient user pairing and resource allocation effects

Active Publication Date: 2017-05-31
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not take into account the problem of multi-cell user pairing, and does not consider the selection gain of multi-cell user pairing, so the maximum system spectrum utilization cannot be obtained;
[0005] To sum up, with the increase of mobile users and user services, the system spectrum utilization rate of the existing MIMO system is not high, and the existing method cannot guarantee the bit error rate of the system at a certain threshold Below the value, it affects the improvement of communication quality

Method used

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  • Joint virtual MIMO resource allocation method based on dynamic multi-cell user pairing
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Experimental program
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Effect test

Embodiment 1

[0043] The present invention is a joint virtual MIMO resource allocation method based on dynamic multi-cell user pairing, see figure 1 , including the following steps,

[0044] (1) The base station obtains basic parameters

[0045] The base station acquires the set of users to be paired in the current time slot l, a single N u The number of users to be paired in the cell N u , the number of cells L, the resource block set r, the number of resource blocks N, the number of receiving antennas N r and the distance d from each user to each cell base station; the parameters obtained by the base station of the present invention include not only the user's own parameters, but also resource blocks and cell parameters.

[0046] (2) Construct resource allocation constraint matrix

[0047] According to the resource block set r and the number N of resource blocks, an optional resource block allocation set P is formed; according to the optional resource block allocation set P, a resource ...

Embodiment 2

[0075] The joint virtual MIMO resource allocation method based on dynamic multi-cell user pairing is the same as that in Embodiment 1, wherein the optional resource block allocation set P is formed according to the resource block set r and the number of resource blocks N=4 described in step (2), Including the following steps:

[0076] 2a) Generate an empty initial optional resource block allocation set P 0 ;

[0077] 2b) In resource block set r={r 1 ,r 2 ,...,r j ,...,r 4}, select a resource block, put the number of this resource block as an element into P 0 middle;

[0078] 2c) Select 2 consecutive resource blocks in the resource block set r, and put the 2 numbers of these 2 consecutive resource blocks as an element into P 0 middle;

[0079] 2d) Select 3 consecutive resource blocks in the resource block set r, and put the 3 numbers of these 3 consecutive resource blocks into P as an element 0 middle;

[0080] 2e) Select 4 consecutive resource blocks in the resource ...

Embodiment 3

[0088]The joint virtual MIMO resource allocation method based on dynamic multi-cell user pairing is the same as in embodiment 1-2, wherein in step (3) according to the user set l to be paired and the number of receiving antennas N r = 4, generate an optional user pair set G, proceed as follows:

[0089] 3a) Generate an empty initial set of optional user pairs G 0 ;

[0090] 3b) In the user set to be paired l={l 1 , l 2 ,...,l i ,...,l 32}, select a user, and put the user's number as an element into G 0 middle;

[0091] 3c) Select 2 users in the user set l to be paired, and put the 2 numbers of these 2 users as an element into G 0 middle;

[0092] 3d) Select 3 users in the user set l to be paired, and put the 3 numbers of these 3 users into G as an element 0 middle;

[0093] 3e) Select 4 users in the user set l to be paired, and put the 4 numbers of these 4 users into G as an element 0 middle;

[0094] 3f) Repeat steps 3b), 3c), 3d) and 3e) until all possible and mu...

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Abstract

The invention discloses a joint virtual MIMO resource allocation method based on dynamic multi-cell user pairing and mainly solves the problem that in the prior art, the spectrum efficiency is low and the communication quality is poor due to the fact that multi-cell user pairing and resource allocation of a system cannot be dynamically adjusted. The technical scheme comprises the step of establishing a multi-cell user pairing and resource allocation model by taking a resource allocation constraint matrix, a user pairing constraint matrix, a cell allocation constraint matrix and a user pair capacity vector as parameters, and solving the model thereby obtaining an optimal user pairing and resource allocation result vector; modulating data information carried by each user according to the result vector and a user modulation matrix; and sending the modulated data information to a signal receiver from a resource block allocated to each user. According to the method, dynamic multi-user pairing and resource allocation is carried out efficiently, and the spectrum efficiency of the communication system is maximized under the condition of satisfying a communication quality demand of the system. The method is used for the mobile phone user in a virtual MIMO system to carry out multi-cell user pairing and resource allocation.

Description

technical field [0001] The present invention belongs to the technical field of communication, and further relates to a virtual multiple-input multiple-output MIMO resource allocation method, in particular to a joint virtual MIMO resource allocation method based on dynamic multi-cell user pairing. It is used in the uplink of the virtual MIMO system. [0002] In the uplink of the virtual MIMO system, resource blocks are dynamically allocated to the paired mobile phone users, so that the information carried by each mobile phone user in the mobile phone user pair is simultaneously sent to The signal receiver of the base station maximizes the spectrum utilization of the system Background technique [0003] Multiple-input multiple-output MIMO technology has been widely used in various wireless communication systems to improve spectrum efficiency. However, due to the cost and size of the user equipment and difficulties in practical operation, the application of MIMO technology in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04B7/0413
Inventor 卢小峰范宁郭惠李文娜练籼汛李凯
Owner XIDIAN UNIV
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