无线环境下基于多流优先级的并行多路传输

摘要

在无线异构网络环境下提出一种基于多流优先级的并行多路传输方案。该方案基于并行多路传输协议CMT-SCTP，并利用了SCTP的多流特性和部分可靠特性。针对数据的重要性和时间敏感度，设计优先级数据调度算法；同时提出基于路径质量的数据分发机制，进一步保证数据的有效传输。在NS-2中的仿真结果表明，该方案能够有效提高数据传输的吞吐量，减少时延，保证较好的数据传输性能。%This paper represents a multi-streaming priority-based concurrent multipath transfer scheme in heterogeneous wireless networks. This scheme is based on the concurrent multipath transfer protocol CMT-SCTP, and both mul-ti-streaming and partial reliability of SCTP are utilized. Taking both stream priority and time constraints into consideration, a priority-based data scheduling algorithm is proposed. A quality-based data distribution scheme is also designed to make the transmission more effective. Simulation results in NS-2 show that this scheme can improve throughput and reduce delay, having a good transport performance.