基于自适应丢包区分的卫星信道TCP改进  

Improved Satellite Channel TCP Based on Adaptive Loss Differentiation

作　　者：高大伟[1] 

机构地区：[1]中国人民解放军92941部队

出　　处：《无线电通信技术》2009年第6期25-27,共3页Radio Communications Technology

摘　　要：通过卫星扩展TCP/IP网络无论在商业还是军事上具有十分重要的意义。但由于链路的高时延、高误码率和严重的信道衰落,使得TCP/IP应用于卫星链路时,相对于有线链路性能较差,因此将TCP/IP应用于卫星链路时,必须对TCP/IP进行改进。提出了自适应特定队列管理的方法,其基本思想是根据网络事件动态调整模式匹配参数,使得在拥塞和卫星链路误码率增加的情况下,都具有较高的丢包区分准确率。The extension of TCP/IP networks via satellite has a number of important significance. But the high bit errors, high latency and severe channel decline of satellite link make a poor TCP/IP performance compared to wired link.Therefore TCP/IP must be improved as it is used in satellite link. This paper proposes the concept of adaptive biased queue management. The basic idea is to adjust the parameters for pattern matching according to network dynamic events, so that the scheme can keep accuracy even in the case of congestion loss and increasing satellite link bit errors.

关 键 词：卫星链路 特定队列管理 错误通告 

分 类 号：TN927.2[电子电信—通信与信息系统]