认知可用带宽下的传输控制机制

在航空通信中,传输控制技术直接影响网络的通信性能。基于优先级的传输控制机制能够保证高优先级业务的通信性能,但存在低优先级业务传输性能不佳以及带宽资源利用不足的问题。为了解决这一问题,结合绿色通信理论思想和可用带宽估计技术,提出"认知可用带宽"概念,设计基于认知可用带宽的传输控制机制,并采用多进制自适应调制技术提升网络带宽利用率。仿真结果表明,基于认知可用带宽的传输控制机制能够在保证高优先级业务时延的条件下改善低优先级业务的传输性能,并保证业务最大时延抖动小于0.02ms;同时,自适应调制技术的应用使得网络吞吐率提升3.26%。

Transmission Control Mechanism Based on Cognitive Available Bandwidth

Transmission control technique influence communication performance in aviation network. The transmission control mechanism based on priority guarantee performance of high priority business, but arise poor transmission performance of low priority business and bandwidth utilization problem. For alleviate this problem, put forward the innovative "cognitive available bandwidth" concept and design the transition and control mechanism of cognitive available bandwidth through combined with the theory of green communication and the available bandwidth estimation techniques; and self adaptive modulation is applied to improve bandwidth utilization rate. The simulation results prove that the low priority service performance is relieved based on guarantee performance of high priority service and achieve the delay shake is less than 0.02 ms through the use of transition and control mechanism of cognitive available bandwidth. The throughput rate is improved 3.26% by using self adaptive modulation technique.