一种改进的短波链路数据传输协议

因特网的迅猛发展,使得IP协议成为事实上的工业标准,各种无线网络也纷纷开始使用IP技术组网,短波IP网络也已经出现。在短波链路上传输IP报文通常采用ARQ模式,以对网络层提供报文的无错传输。目前ARQ传输协议普遍采用选择式重发策略,在数据帧中加入帧序号,以确保收方能对数据帧重新排序。为提高IP报文在短波链路上的传输效率,对现有的短波链路选择式重发ARQ协议进行了分析,针对收发双方的通信流程进行了改进,提出了一种无帧序号的ARQ传输协议。测试结果表明,在同样的信道状况下,改进后的协议吞吐率性能有了一定的提高。最后就如何进一步提高该协议性能进行了思考。

An improved HF data link protocol

The rapid development of Internet has made IP protocol the actually industrial standard,which has been utilized in establishing various wireless networks.HF networks over IP also appeared.ARQ protocol is usually used when transmit IP messages over HF data links in order to provide error-free transmission.Selective repeat is usually utilized in Current ARQ protocol,combined with frame serial number to make sure the receiver can rearrange the data it received.In order to promote transmit efficiency,current selective repeat ARQ protocol is analyzed,an improvement is made according to the proceedings of both transmitter and receivers,an ARQ protocol with no serial mumber is provided.Test result indicated that the new protocol has a higher throughput under same channel condition.Deep thinking is made on how to achieve a higher throughput based on the current improvement.