A method for base station user selection, relay user selection and attribution, and power allocation

Abstract

The invention provides a base station user selection, relay user selection and attribution and power distribution method. The method includes: respectively determining the channel information of all active base station users and relay users to the base station and to the relay node; determining the selection and belonging of the relay user according to the channel information of all the relay users to the base station and to the relay node Base station; according to the attribution of the selected relay users, and the channel information of all base station users to the base station and to the relay node, respectively determine the base station user selection of the base stations on the left and right sides of the relay node; according to the quality of service requirements of each selected user and each selected user The channel information of the selected users to the base station and to the relay node respectively determines the minimum transmit power of each selected user. The performance of the whole communication system can be improved through the base station user selection, relay user selection and attribution and power allocation methods described in the present invention.

Description

Technical field: [0001] The present invention relates to the field of wireless communication, in particular to user selection and power allocation in the field of wireless relay cooperative communication, in particular to a base station user selection, relay user selection and relay user attribution and the minimum power required by the selected user method of allocation. Background technique: [0002] With the development of society, people have higher and higher requirements for performance such as transmission rate and communication security. However, available spectrum resources are becoming more and more tense. In order to meet people's requirements for communication quality, improve communication quality, and reduce the cost of unit data transmission, in recent years, the use of relay cooperation technology and the same frequency in all cells have been proposed. Reuse technology and so on. [0003] The core idea of ​​the relay cooperative communication technology is ...

AI Technical Summary

Problems solved by technology

[0004] Then, in the cooperative communication mode of single source, single relay and single sink, due to the simplex mode of the relay node, a complete data transmission takes two orthogonal channels, which is different from the direct transmission between the source and the sink. This space diversity feature reduces the frequency efficiency in comparison to spending only one orthogonal channel

At the same time, due to the same frequency reuse of the whole cell, the same frequency signal interference between cells will be aggravated

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