确认平滑:一种改善无线链路上的TCP性能的实现

Acknowledge Somoothing:a Scheme to Improve the TCP Performance Throughput over Wireless Links

许多研究者已经发现 ,在无线链路上使用链路层自动请求重传 (ARQ)来恢复无线链路差错 ,会在无线链路上和 TCP源端产生大量的突发性流 ,从而使路由器拥塞 ,导致分组丢失和吞吐量下降 .本文提出了一种解决方案 ,在ARQ的接收端 ,利用漏桶对接收确认分组进行平滑 ,使分组的发送能保持一定的间隔 .仿真结果表明 。

Some researcher have find that when using the Automatic Repeat Request (ARQ) in the link layer to recovery the error of the wireless link , ARQs in order delivery causes that the TCP sink receives clustered packets. These clustered packets will degrade TCP/ARQ throughput over wireless links. In this letter a simple solution is proposed that token buckets are used in ARQ receiver to smooth the received packet and keep the intervals of delivered packets. According to the simulation results, we show that this method can improve TCP/ARQ throughput effectively.