混合TCP:RFID阅读器网络中的TCP方案

摘要

为提高RFID阅读器网络中移动阅读器数据传输的效率和节省其传输能量,提出了一个新的适合RFID阅读器网络的传输方案H-TCP.针对阅读器网络中的无线链路和有线链路,采用混合TCP链接传输.并针对RFID阅读器网络传输的数据以短数据包为主,以及CSMA/CA的单连接数据传输特性,在无线链路数据链路层采用ASR-ARQ,并在其传输层采用增强的慢启动策略,充分利用了无线链路的有限带宽,大大提高了TCP吞吐量和节省了移动阅读器的传输能量.%A new TCP transmission mechanism H-TCP within RFID reader network is proposed.The work flow and critical approaches are analyzed and designed in detail. Based on the characteristic of data packet in communication within RFID reader network and CSMA/CA in 802.11 implemented in thenetwork ,ASR-ARQ is adopted in link layer between mobile RFID reader and RNC,and the enhanced slow start is used in transport layer to improve TCP throughput within the limited bandwdth and save the power of mobile RFID reader.Experiment results show that H-TCP does improve highly the perormance of data transmission and save largely the energy of mobile RFID readers.