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User matching and power allocation method and apparatus

A user pairing and power technology, applied in the field of communication, can solve the problems of high implementation complexity of user pairing schemes, scheduling fairness indicators may not be able to achieve optimal performance, and difficult to implement

Active Publication Date: 2016-06-29
DATANG MOBILE COMM EQUIP CO LTD
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AI Technical Summary

Problems solved by technology

[0006] The theoretically optimal user pairing scheme has high implementation complexity, and it is difficult to implement in the actual system
In addition, due to non-ideal factors such as channel feedback, which will affect the performance of user pairing, the theoretical capacity index and scheduling fairness index may not be able to achieve optimal performance.

Method used

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  • User matching and power allocation method and apparatus
  • User matching and power allocation method and apparatus
  • User matching and power allocation method and apparatus

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Embodiment Construction

[0078] In order to divide the non-orthogonal multiple access system according to the power domain pattern and improve the throughput of the cell, in the embodiment of the present invention, a fast user pairing and power allocation scheme is proposed. Multi-users are grouped, and then group-based multi-user pairing is performed, and then transmit power is allocated to the paired user group.

[0079] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0080] refer to figure 1 As shown, in the embodiment of the present invention, the detailed flow of user pairing and power allocation is as follows:

[0081] Step 100: Based on the channel state correlation information of the user terminals, similarly group all user terminals within the jurisdiction, wherein, in the same similarity group, the difference between the channel state correlation information of any two user terminals does not exceed a set thre...

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Abstract

The invention relates to the field of communications, in particular to a user matching and power allocation method and apparatus for improving the cell throughput. The method comprises the steps of conducting similarity grouping of all user terminals in a control range based on channel state associated information of the user terminals, wherein, in the same similarity group, the difference of the channel state associated information between any two terminals does not exceed a preset threshold; performing at least one round of selection, matching the user terminals in each similarity group, and selecting one user terminal at most from each similarity group to form a matching group during each round of selection; and each time one matching group is formed, allocating transmitting power for each user terminal in the matching group. Thus, the invention can effectively achieve multi-user non-orthogonal multiple access multiplexing based on power distinguishing, further improves the cell throughput significantly, and is low in complexity and higher in accuracy as compared with an exhaustive search user matching method.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for user pairing and power allocation. Background technique [0002] Pattern Division Non-Orthogonal Multiple Access technology, referred to as Pattern Division Multiple Access (PDMA), is a technology based on the overall optimization of a multi-user communication system and joint processing by the sending end and the receiving end. [0003] At the sending end, users are distinguished based on non-orthogonal characteristic patterns in multiple signal domains (such as power domain, coding domain, and air domain); at the receiving end, based on the characteristic structure of user patterns, serial interference cancellation is used to achieve multi-user detection. In this way, further multiplexing of existing wireless transmission resources by multiple users can be realized, thereby solving the problem in the prior art that the orthogonal method can only reach the inne...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04W72/04
Inventor 康绍莉戴晓明彭莹秦飞孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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