Relay selecting method based on interrupt priority for unisource multi-relay cooperative communication system

A collaborative communication, single-source technology, applied in wireless communication, sustainable communication technology, advanced technology, etc., can solve the problems of unsatisfactory system throughput and communication quality, improve system throughput, ensure fairness and throughput Effect
CN103402237AInactive Publication Date: 2013-11-20XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2013-11-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a relay selecting method based on interrupt priority for a unisource multi-relay cooperative communication system, which aims at overcoming a defect that an 'optimum interrupt' optimal fair selection strategy cannot ensure a larger system throughput. The method comprises steps of firstly, arranging an independent transmission times counter for each relay on a target node; then selecting a relay with the channel capacity being more than the interrupt capacity and adding the relay into a candidate set; selecting a relay with less transmission times from the candidate set and adding the relay into an optimal set, and then selecting a relay with the optimal channel quality from the optimal set to transmit; increasing the count of the corresponding transmission times counter after each transmission of each relay; repeating the steps in each cooperation period until the cooperation period ends. According to the method, the channel quality and fairness are comprehensively taken into consideration when the relays are selected, the system throughput is improved on the basis of ensuring high fairness, and the method has a good effect.
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Description

technical field

[0001] The invention relates to the technical field of cooperative wireless communication, in particular to a relay selection method based on interruption priority in a single-source multi-relay cooperative communication system. Background technique

[0002] In wireless communication networks, fading, multipath and node movement lead to poor communication environment. With the gradual increase of wireless network users and the gradual enrichment of services, higher transmission rate and communication quality have become an imminent demand. Based on the strong demand for high transmission rates, researchers have proposed the concept of cooperative diversity in cooperative communication, which uses diversity methods to combat fading characteristics in wireless communication systems, thereby improving communication quality.

[0003] In cooperative communication, the cooperation mode of source and relay is the key to affect the performance of the system. In the...

Claims

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