【摘要】 通信网络超调量的增加以及过渡时段过长均会引起数据传输延时问题,使网络稳定性遭到破坏。对此,提出一种无线多跳通信网络数据传输延时补偿算法。在单跳传输队列模型中,采用等效带宽描述无线单跳网络链路的延时限制概率,从而推导出等效带宽模型的累积分布函数与概率密度函数。然后在路由中间节点处混合源节点与目的节点间的流量,计算延时下限累积分布函数与延时违约概率下限,再根据最佳网络分簇个数求取簇中通信节点消耗能量,在确定簇头后搜索各簇头到汇聚节点的最小代价多跳路径,实现传输延时补偿。仿真结果证明,所提算法可以提高通信网络的吞吐性能,且根据目标节点的传输延时结果可知,上述算法有效实现了数据传输延时补偿。更多还原

【Abstract】 The increase of overshoot in communication network and the long transition period will cause the delay of data transmission and damage the stability of network. Therefore, a data transmission delay compensation algorithm based on wireless multi-hoop communication network was proposed. In the model of single-hop transmission queue,the equivalent bandwidth was used to describe the delay constraint probability of wireless single-hop network link,and then cumulative distribution function and probability density function of equivalent bandwidth model were derived. At the intermediate node of route, the traffic between source node and destination node was mixed. The cumulative distribution function of delay lower limit and the lower limit of delay default probability were calculated. According to the number of best network clusters, the energy consumption of communication nodes in the cluster was calculated. After the cluster head was determined, the multi-hop path with minimum cost from cluster head to the sink node was searched. Finally, the compensation of transmission delay was achieved. Simulation results show that the proposed algorithm can improve the throughput performance of communication network. According to the result of transmission delay of target node, this algorithm can effectively compensate the data transmission delay.更多还原