无线Mesh网中基于网络编码感知的分组公平调度机制

Network Coding Awareness Based Fairly Scheduling in Wireless Mesh Network

利用竞争无线媒介的用户的传输代价不同,本文提出了一种基于网络编码感知的分组公平调度机制FSNC.FSNC机制的基本调度单位是编码集,编码集中的用户将依据自身在编码集中的权重,公平地获取统计上的长期和短期系统服务时间.FSNC机制是通过用户的ARQ反馈消息,感知用户的解码能力从而做出调度决策的.理论和仿真实验证明,FSNC机制在改善多用户分集系统的用户的吞吐率的同时,能够为多用户提供公平的服务时间.

In this paper,we exploit the fact that users contending for the wireless medium will have different transmission cost,and present a fairly scheduling scheme FSNC.FSNC adopts NC-aware scheduling while maintaining statistical short and long term fairness.FSNC makes scheduling policy based on the ARQ feedback message from users.Theoretic analysis and simulation results prove that FSNC can provide service time fairness while improving the expected good for each user in multiuser diversity system.