Layered and Multiple Description Coding Based Dynamic Bandwidth Allocation strategy
A Layered and Multiple Description Coding based Dynamic Bandwidth Allocation(LMDBA)strategy is proposed for the limited bandwidth resource feature of wireless streaming media service.The strategy utilized the characteristics of layered and multiple description coding to allocate bandwidth dynamically and adopted upgrade and degrade strategy for QoS.The strategy minimized the system congestion and improved the utility of bandwidth resource while meeting the QoS needs of users.This paper also addressed the fairness problem of QoS's upgrade and degrade strategy.Simulation results show that the proposed strategy can greatly improve the utility efficiency of bandwidth resource and the System congestion comparing with the traditional fixed-bandwidth allocation strategy while meeting the QoS needs of users.