Inter-network Interfercnce Mitigation For Mobility Coexistence Wireless Body Area Network

Wireless body area network is a body-centered communication network consisting of numerous network elements related to human beings. As a mobile self-organized network, it has information acquisition,data processing, wireless communication and other functions. Since human's sociability and mobility, there will be coexisting problem when users locate in an area. Coupled with the limited frequency resources , the inter-WBANs interference has become more challenging.As one kind of interference mitigation strategies, the power control method based on game theory can effectively fit the characteristics of WBANs such as random distribution and lack of coordination.In order to study the inter-WBAN interference, we established random moving model and the distributed model based on social network.Then according to the concept of entropy in thermodynamics created the polymerization degree of the indicators ( PDOI) .PDOI is used to describe the ordering of users in the network . Next we put forward a model closer to the actual dynamic self-organizing social mode.Then, for the traditional power control algorithm of game theory not considering the mobility of wireless net body domain, the algorithm complexity is high and its difference of convergence in the new model, this paper proposes the Time-weight Power Control (TPC) algorithm and Multidimensional Rotational Fuzzy Control (MRFC) algorithm. Simulation results show that TPC algorithm and MRFC algorithm compared with the traditional game theory power control algorithm is more suitable to the dynamic model, they can effectively improve the convergence speed, increase the reliability of the network, heighten the density of coexistence wireless body area networks.