Distributed relay selection method based on mutually beneficial matching game

Abstract

The invention discloses a distributed relay selection method based on mutually beneficial matching game. The method comprises the following steps: modeling a relay selection problem in a wireless relay network as a locally mutually beneficial matching game model, wherein the participants of the model are source nodes and relay nodes in the network; performing, by the source nodes in the network, overall consideration on different relay nodes, and performing priority sequence sorting; proposing, by each source node, an application to the relay node having the highest priority; proposing, by thesource node not satisfying the current connection, an application to the relay node having the highest priority, and performing, by the relay node, priority sorting on the source nodes which proposethe application to itself, and selecting to accept or refuse the requests of the source nodes according to the switching matching game rule; if the application request is refused, proposing, by the source node, to the relay node having the second highest priority, and keeping the original strategy if no better choice is available; and circularly performing matching selection until the transmissionconnection reaches a stable state. By adoption of the distributed relay selection method, the total throughput performance of the relay network can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a distributed relay selection method based on a mutually beneficial matching game. Background technique [0002] There are endless researches on the blowout capacity requirements and efficient transmission of the next generation network. Among them, collaborative communication (A.Nosratinia, T.E.Hunter, and A.Hedayat, "Cooperative communication in wireless networks," IEEE Communications Magazine, vol.42, no.10, pp.74-80, 2004.) is regarded as a A transmission technology with great potential, which effectively improves the transmission speed and transmission efficiency through space diversity technology. In cooperative transmission, the relay node can be used to retransmit the data sent from the source node to the destination node, so as to improve the transmission efficiency. However, not all relay allocation schemes can improve transmission performance. Unreaso...

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Problems solved by technology

Although there have been a series of works using matching games to solve wireless communication resource allocation problems, for traditional matching game methods such as (references O.Semiari, W.Saad, S.Valentin, M.Bennis, and H.V.Poor,"Context -Aware Small CellNetworks: How Social Metrics Improve Wireless Resource Allocation, "IEEETransactions on Wireless Communications, vol.14, no.11, pp.5927-5940, 2015.), each user strives to increase their own performance, but each Greedy behavior may be detrimental to the performance of the entire network

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