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A joint virtual mimo resource allocation method based on dynamic multi-cell user pairing

A user pairing and resource allocation technology, applied in the field of communications, can solve the problems of large system spectrum utilization, inability to obtain, and low system spectrum utilization, achieve efficient user matching and resource allocation, maximize frequency utilization, and improve system The effect of communication quality

Active Publication Date: 2019-10-08
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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  • A joint virtual mimo resource allocation method based on dynamic multi-cell user pairing
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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 obtains the set 1 of users to be paired in the current time slot, and a single N u 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 not only include the user's own parameters, but also include the parameters of resource blocks and cells.

[0046] (2) Constructing a resource allocation constraint matrix

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

Embodiment 2

[0075] The joint virtual MIMO resource allocation method based on dynamic multi-cell user pairing is the same as that of 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 as described in step (2), It includes the following steps:

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

[0077] 2b) In the resource block set r={r 1 ,r 2 ,…,r j ,…,r 4}, select 1 resource block, and 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 ...

Embodiment 3

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

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

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

[0091] 3c) Select 2 users in the user set 1 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 1 to be paired, and put the 3 numbers of these 3 users as an element into G 0 middle;

[0093] 3e) Select 4 users in the user set 1 to be paired, and put the 4 numbers of these 4 users as an element into G 0 middle;

[0094] 3f) Repeat steps 3b), 3c), 3d) and 3e) until the user se...

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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 invention belongs to the field of communication technologies, 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. Used in the uplink of virtual MIMO systems. [0002] In the uplink of the virtual MIMO system, the resource blocks are dynamically allocated to the paired mobile phone user pairs, so that the information carried by each mobile phone user in the mobile phone user pair is sent to the allocated resource blocks at the same time. The signal receiver of the base station to maximize the spectrum utilization of the system Background technique [0003] Multiple-input multiple-output MIMO technology has been widely used to improve spectral efficiency in various wireless communication systems. However, due to the cost and size of the user equipment and the difficulties in practical operation, the...

Claims

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Application Information

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Patent Type & Authority Patents(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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