2D网络中组播簇头选举算法

IDevice-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 proposes 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.?????