【摘要】 鉴于IEEE802.11e EDCA接入控制机制在高背景负载条件下无法保证高优先级数据流的服务质量,提出了一种利用自适应的、连续的、变次数的RTS请求,以提高高优先级业务的接入成功概率,并减少高优先级业务之间碰撞的算法。理论分析和仿真结果表明,该算法能有效地提高高优先级数据的接入成功概率,保护其端到端吞吐量,减少分组重传次数和分组时延,从而保证高优先级数据流的服务质量。更多还原

【Abstract】 EDCA in IEEE802.11e can’t ensure the QoS of the high priority service flow when there are lots of background traffic in the network.We proposed a novel admission control algorithm based on adaptive,consecutive,variable requests of RTS,which can increase admission probability of high priority service flow,and reduce the collision between the high priority data flow.The theoretical analysis and simulation results show that the algorithm can significantly increase admission probability of high priority service flow,improve the end-to-end throughout,and reduce the retry times and delay,which will ensure the QoS of high priority service flow.更多还原