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Fast Joint Resource Allocation Method Based on Split Number in Virtual MIMO System

A technology of resource allocation and resource block allocation, which is applied in the field of rapid resource allocation based on the number of splits and virtual multiple-input multiple-output MIMO resource allocation. problem, achieve efficient user pairing and resource allocation, overcome the high complexity of repeated traversal, and reduce the computational complexity of the system

Active Publication Date: 2019-12-24
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem is that existing methods do not take computational complexity into account
Especially as the number of users gradually increases, the running time of the system will be significantly improved, resulting in low efficiency of the system, and when the number of users reaches a certain value, the existing algorithm can hardly achieve
[0004] To sum up, with the increase of mobile users and user services, the user pairing and resource allocation algorithms of the existing virtual multiple-input multiple-output MIMO system do not consider the non-stationary user pairing, resulting in low system spectrum utilization; and Excessive pursuit of algorithm optimization leads to high computational complexity and low system efficiency

Method used

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  • Fast Joint Resource Allocation Method Based on Split Number in Virtual MIMO System
  • Fast Joint Resource Allocation Method Based on Split Number in Virtual MIMO System
  • Fast Joint Resource Allocation Method Based on Split Number in Virtual MIMO System

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] With the increase in the number of communication users and the increasing shortage of spectrum resources, the prior art can no longer achieve more efficient use of spectrum for user selection and resource block allocation. Therefore, the present invention proposes a user pairing and splitting method based on the number of splits. Resource allocation plan. Among them, the base station is involved, and the multiple users and resource blocks associated with the base station are implemented in a virtual MIMO system.

[0043] The invention is a fast joint resource allocation method based on the number of splits in a virtual MIMO system, see figure 1 , Including the following steps,

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

[0045] The base station obtains the set of users to be paired in the current time slot of the cell, the number of users to be paired Nu, the set of resource blocks r, the number of resource blocks N, the number of receiving antennas Nr, and so on....

Embodiment 2

[0073] The fast joint resource allocation method based on the number of splits in the virtual MIMO system is the same as that in Embodiment 1. In step (3.1), the user group split number set G is formed according to the number of users to be paired Nu, taking Nu=5 as an example, including The steps are as follows:

[0074] 3.1a) Generate an initial user integer partition matrix Q with all elements 0 0 .

[0075] 3.1b) The number of users Nu=5 is divided into integers, that is, the positive integer 5 is expressed as the sum of several positive integers, regardless of the order of their summation. Split the number of users into the result vectors (1,1,1,1,1), (2,1,1,1,0), (2,2,1,0,0), (3,1,1) ,0,0), (3,2,0,0,0), (4,1,0,0,0), (5,0,0,0,0) as a row vector into the user integer split Matrix Q 0 in.

[0076] 3.1c) Remove the zero elements in the result vector of the number of users split to obtain (1,1,1,1,1), (2,1,1,1), (2,2,1), (3,1 ,1), (3,2), (4,1), (5), get the user integer partitio...

Embodiment 3

[0085] The fast joint resource allocation method based on the number of splits in the virtual MIMO system is the same as that in the embodiment 1-2, wherein the user pairing mode matrix B generated in step (3.2) is to generate the user pairing mode matrix B according to the optional user pair set G, It includes the following steps:

[0086] 3.2a) Generate an initial user pairing pattern matrix B with Nu=5 rows, Na columns, and all elements are 0 0 , Where Na is equal to the number of elements in the user group split number set G, namely

[0087] 3.2b) Determine whether the p-th element of the user group split number set G contains a number equal to l i If yes, make the user pairing mode matrix B 0 L of i The element in the row and p-th column is equal to 1, otherwise, it is equal to 0.

[0088] 3.2c) Set the initial user pairing pattern matrix B with element values 0 As the final user pairing mode matrix B.

[0089] The above completes the user pairing mode matrix required by the pre...

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Abstract

The invention discloses a fast joint resource allocation method based on partition numbers in a virtual MIMO system in the field of wireless communication. The problems of non-fixed user pairing and resource allocation when the number of users is large are mainly solved. The technical scheme is as follows: constructing a complete resource block allocation set and a user group partition number set; constructing a fast joint resource allocation model based on the partition numbers in the virtual MIMO system, and solving the fast joint resource allocation model by using a Hungary algorithm based on a greedy algorithm to obtain a user pairing and resource allocation result; modulating user information according to the result and a user modulation matrix; and sending the information to a receiver on resources allocated to the user to accomplish user pairing and resource allocation. According to the fast joint resource allocation method disclosed by the invention, multi-user pairing of a non fixed number is carried out quickly based on the user paring based on the partition numbers, and the local optimum to the global optimum in the allocation model is resolved. By adoption of the fast joint resource allocation method disclosed by the invention, under the condition of low computation complexity, the utilization rate of the system frequency is maximized, and the communication quality of the system is improved. The fast joint resource allocation method is applied to the communication of the virtual MIMO system.

Description

Technical field [0001] The present invention belongs to the field of communication technology, and further relates to a virtual multiple-input multiple-output MIMO resource allocation method, specifically a fast resource allocation method based on the number of splits. Used in the uplink of a virtual MIMO system. Background technique [0002] Multiple-input multiple-output MIMO technology has been widely used in various wireless communication systems to improve spectrum efficiency. However, due to practical operational difficulties such as the cost and size of user equipment, the application of multiple input multiple output MIMO technology in the uplink is limited. In order to solve this problem, researchers have proposed a virtual multiple-input multiple-output MIMO method, which effectively solves the problem of user equipment cost and size limitation. That is, the uplink pairs two or more users in the same A single transmitting antenna is deployed for each paired user in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04B7/0413H04W24/02
CPCH04B7/0413H04W24/02H04W72/0453
Inventor 卢小峰郭惠范宁李文娜刘博文赵丹萍
Owner XIDIAN UNIV
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