Partner Selection and Resource Exchange in Cooperative Network

Abstract

Resource sharing for improved performance is a key factor in practical realization of cooperative communication networks. This paper presents a choice of suitable partner for optimizing the resources and thereby, strengthening the cooperation in the wireless network. Nodes in the network forms a pair to compensate for each other’s deficiency. These paired nodes share the resources owned by them amongst the pair and hence naturally remain in cooperation. This is achieved without the need of any outside stimulation like pricing, credit or reputation index. Exchanging the resources is an attractive technique to achieve mutual benefits and encourage cooperation among the nodes. In the proposed work nodes cooperating by exchanging bandwidth with relaying power. Simulation results show that the source node can increase its data rate in the range of 71% to 97% by assigning some fraction of its bandwidth to relay. The relay also earn benefit by getting additional bandwidth in terms of increase in its data rate from 12.5% to 97 %. Based on this, an algorithm is developed for partner selection. The algorithm produces suboptimal results as it considers the benefit of source and relay individually. It is found that in this framework, the suboptimal procedure is more suitable.