Study Of Cooperative Node Selection Algorithm With QoS Guarantees

In future wireless communication networks, cooperative communication isconsidered as a very promising communication technology, which can provide betterQoS guarantee for different kinds of services. Cooperative node selection technology isone of the key problems for cooperative communication. How to use limited nodeenergy efficiently and to provide better QoS guarantee for different kinds of services isan important issue in the cooperative node selection technology.In this paper, both efficiently using of node energy and the QoS requirements ofmulti-service are studied in the cooperative node selection technology. At first, theproblem of efficiently using of node energy is studied, and a mathematical model isestablished. Based on the model, the conditions of cooperative node selection and themethod of node power allocation are given. Second, different cooperation strategies areapplied to different types of business, and a cooperative node selection algorithm withQoS guarantees (CNSQG) is proposed in this paper.At last, the simulation of the CNSQG algorithm is implemented. The results showthat the newly proposed algorithm can provide better QoS guarantee for different kindsof services and reduce energy consumption.