【摘要】 多播流是无线Ad hoc网络中的一种常见和有效的通信形式,尤其是对多媒体业务而言。提出了一种支持多速率多播传输的Ad hoc网络资源分配算法,它通过引入基于价格的流量分配方案来解决多速率多播传输问题,从而能够自适应地分配网络流量,并且最大化网络流的总效用。仿真结果表明,该算法不仅具有良好的收敛性,而且它的多速率多播传输特性使得不同信道条件的用户能获得最佳的网络性能,从而提高了网络吞吐量。更多还原

【Abstract】 Multicast sessions are expected to be an efficient communication scheme especially for multimedia applications in mobile Ad hoc networks.A new resource allocation algorithm was proposed for wireless Ad hoc networks with multi-rate multi-cast capability.It uses a price-based approach to solve the multi-rate multi-cast problem.And it can adaptively allocate network traffic such that the aggregate utility for all sessions is maximized.Simulation results show that the proposed algorithm not only has good convergence,but also its multi-rate multi-cast capability allows users with different channel to achieve maximum performance,thereby increasing the network throughput.更多还原