基于优先级队列的多约束无线链路资源调度算法

Multi-Constrained Wireless Link Resource Management Algorithm Based on Priority Queue

针对海战场环境中指控数据以先入先出(FIFO)的方式排队发往数据链,当数据链中存在丢失率高和不可达节点时,会导致无线链路带宽资源综合利用率不高的问题,结合仿真模型分析了原因,提出了基于优先级队列的多约束无线链路资源调度算法。通过将该算法与FIFO、优先级队列算法(Priority Queue)进行仿真对比分析,结果表明该算法在存在排队报文时增加了丢失率较低链路上的发送速率,减少了目的不可达报文的发送量,最终降低了重要报文的延迟,提高了数据链的利用率。

Under the sea-battle field environment, the insufficient utilization of the bandwidth resource for the wireless link can exist when the command and control data queued by First-In First-Out is sent to the data link, which includes unreachable node and high loss-ratio link. The causation is analyzed deeply by the simulation model. Based on this analysis, the multi-constrained wireless link resource management algorithm based on priority queue is presented. By the way of simulation, we analyze contrastingly this algorithm, FIFO and priority queue. The result indicates that when there are some messages to wait for transmit by data link, this algorithm increases automatically the send rate for the low loss ratio link, and reduces the send rate for the messages of which destination address are unreachable. Finally it reduces send delay for the important messages, and improves the data link utilization.