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服务质量(QoS)模型SWAN将成为移动自组织网(MANET)研究的热点之一。SWAN在AdHoc网络中利用分布式算法实现区分服务,有更简单,有效和扩展性强的优点。然而SWAN模型仍然有一些不足,SWAN对于所有的实时的UDP业务采用相同优先级,所以,在网络拥塞时不能按资源和优先级的需求对业务流采取动态的控制策略。而基于802.11e对SWAN扩展后的模型可以很好的克服以上缺点并为MANET提供可靠质量保障,很有应用价值。文中将对这种方案进行分析和研究。
The quality of service (QoS) model SWAN will be one of the hot topics in MANET research. SWAN uses distributed algorithms to differentiate services in AdHoc networks, which has the advantages of simpler, more efficient and more scalable. However, the SWAN model still has some shortcomings. The SWAN uses the same priority for all real-time UDP services. Therefore, a dynamic control strategy can not be adopted for traffic when the network is congested because of resource and priority requirements. Based on 802.11e SWAN extended model can overcome these shortcomings and provide reliable quality assurance for MANET, which has great application value. This article will be analyzed and studied this program.