Research On Algorithm Of Cluster Head Selection In D2D Multicast Communication

Device-to-Device(D2D)communication,which promises direct communication between devices without relaying via base stations or AP(Access Point),turns out to be a key technology for IMT-Advanced system,due to its potential in improving the user experience and quality of transmission.Through combining multicast communication with D2D technology,multicast communication can obtain extended coverage,better data transfer rate and capacity.The quality of multicast service in traditional cellular is limited by the worst channel quality of edge users.Through introducing the D2D communication technology,the use of short distance communication between devices for relaying can effectively enlarge the coverage,reduce the energy consumption,and increase the transmission rate and capacity of multicast service.In view of the D2D hybrid network and cellular network,this paper first introduces the D2D communication model and key technology briefly,including the neighbor discovery,interference control etc,and the scene of multicast assisted by D2D is introduced in detail;Second we introduces the mature algorithms of traditional network systematically;Finally according to scenes of multicast communication assisted by D2D communication,we propose a weighted clustering algorithm based on interference and relative mobility of node,which ensures the stability of cluster architecture in the data transfer process and improves multicast capacity.By simulation,we compares our algorithm with the traditional algorithms,which advantageously proves the correctness and validity of our algorithm...