移动自组织网络服务质量控制机制综述

综述了移动Ad Hoc网络的QoS机制，将其划分为链路层、网络层、传输层、跨层优化和网络间QoS机制，并加以比较和分析。链路层QoS机制主要在于提供QoS控制的MAC协议。学者在网络层设计了各种服务质量感知路由，包括原有路由协议的QoS控制扩展和全新的支持QoS控制的路由协议。为了区分传输失败的原因以及降低资源竞争，传输层提供适合移动Ad Hoc网络的TCP协议。为了全面解决链路层触发、路由选择和负载平衡的问题，学者提出跨层构建QoS体系结构。网络间QoS机制主要在于提供移动Ad Hoc网络和固定结构网络之间的QoS保证。最后进行对比总结，指出了各种技术的特点和适用范围，并展望了该领域的未来发展方向。

Review of QoS mechanisms for mobile Ad Hoc networks

There are difficulties to guarantee QoS of mobile Ad Hoc networks due to their features of dynamically changing topology and wireless communication. Current QoS techniques for mobile Ad Hoc networks are divided into five categories: link layer solutions, network layer solutions, transport layer solutions, cross layers solutions and cross networks solutions. The main link layer solutions are QoS MAC protocols. The main idea in network layer solutions is QoS routing. Wireless TCP is the main scheme to guarantee QoS in transport layer. To choose route and balance load, cross layer solutions were researched to provide network architectures to support QoS. The main idea in cross network solutions is to propose QoS solutions between mobile Ad Hoc networks and fixed networks. These QoS solutions were introduced and analyzed.