一种支持实时性业务的多信道MAC协议

为满足军事航空通信中实时性业务对时延的要求,提出一种基于Turbo编码的多信道MAC协议——Turbo_MAC。Turbo编码技术和多信道机制的使用,使得协议在不采用反馈确认机制的情况下仍能确保分组的高可靠性和系统的高吞吐量,同时达到降低分组端到端时延的目的。运用排队模型、组合理论和离散Laplace变换得到分组成功传输概率、系统吞吐量和分组端到端时延均值性能指标。仿真结果表明,理论分析与仿真结果一致,且Turbo_MAC协议的时延性能优于TDMA和IEEE 802.11b多信道MAC协议。

Multi-channel media access control protocol for real-time traffic

This paper proposed a multi-channel media access control protocol based on Turbo Turbo_MAC to decrease the time delay for real-time traffic in military aeronautical communication. Without feedback control mechanism, using the technique of Turbo and mechanism of multi-channel, the new protocol could make sure the reliability of packets and the throughput of system, and also decrease the time delay of packets. It introduced queuing model, combination theory and Laplace transformation to work out the expression of system performance, such as successful probability of packets, throughput and time delay. The results show that the theoretic analysis is in accordance with the simulation, and the time delay performance of Turbo_MAC is better than that of other multi-channel media access control protocols, such as time division multiple access and IEEE 802. 11b.