Abstract: This paper analyzes the problems of TCP in Ad hoc, and studies an improved TCP algorithm with demand-based acknowledgement, which requires that the receiver sends an acknowledgement according to the sender’s request. The algorithm improves the performance of TCP in Ad hoc because of reducing the number of ACK, and eliminating delayed ACK’s bad influence on efficiency of the data transportation. The simulation results demonstrate that the algorithm is efficient.

Key words: Transmission Control Protocol(TCP), delayed ACK, Ad hoc

摘要： 分析无线自组网中关于传输控制协议(TCP)的问题，研究基于按需确认的TCP协议在无线自组网中的改进算法。该算法规定接收方须根据发送方的要求对数据报文进行确认，减少确认(ACK)数量并消除延迟ACK对TCP传输效率的影响，提高了无线自组网中TCP的性能。仿真试验结果证明了该算法的有效性。

关键词: 传输控制协议, 延迟确认, 无线自组网

CLC Number: 

• TP393