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当前,Ad Hoc网络传输多媒体业务需求提出了服务质量(QoS)的要求。由于Ad Hoc网络本身具有分布式控制、无线信道容量受限以及节点、链路和网络拓扑状态不断变化等特点,使其相对于固定无线网络及有线网络提供有保证且稳定的QoS要困难得多。文章总结了当前DSR协议的QoS研究进展,对不同的改进方案加以分类比较,指出了存在的问题;并针对Ad Hoc网络中基于资源预留的QoS算法所带来的复杂度问题,提出了适合该网络的测量可用带宽算法,构造了一种支持实时业务的Ad Hoc网络QoS服务机制。
Currently, Ad Hoc network transmission multimedia business demands raised the requirements of Quality of Service (QoS). Because Ad Hoc network has the characteristic of distributed control, limited capacity of wireless channel and constant changes of nodes, links and network topologies, it is much more difficult to provide guaranteed and stable QoS compared with fixed wireless network and wired network . This paper summarizes the research progress of QoS in the current DSR protocol, classifies and compares the different improvement schemes, and points out the existing problems. Aiming at the complexity of QoS algorithm based on resource reservation in Ad Hoc networks, The measurement of the network bandwidth algorithm can be used to construct a support for real-time business Ad Hoc network QoS service mechanism.