Abstract: Aiming at the problem that the transmission efficiency of standard TCP services over narrowband wireless is low, this paper presents a channel match transmission method based on multi-algorithm selection l. It tags wireless channel performance with bandwidth, latency and loss rate, and selects corresponding congestion control algorithm to match various channels. Simulation result proves that the method can optimize transmission effects in wireless channels of 2 Kb/s, 20 Kb/s and 2 Mb/s, while the throughput increases by 120%~300% compared with standard TCP transmission.

Key words: TCP congestion control, protocol simulation, narrowband wireless channel

摘要： 针对标准TCP业务在窄带无线信道上传输效率低下的问题，提出一种基于算法择优的信道匹配传输方法，该方法将带宽、时延、丢包率作为信道特征标识，通过匹配不同的拥塞控制算法提高传输效率。仿真结果证明，该方法对于带宽为2 Kb/s、20 Kb/s、2 Mb/s的无线信道具有不同程度的优化效果，与标准的TCP传输相比，吞吐量可提升1.2倍~3倍。

关键词: TCP拥塞控制, 协议仿真, 窄带无线信道

CLC Number: 

• TP393