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为了解决无线Mesh网络(WMN)的网关拥塞控制问题,在已有的网络拥塞控制策略基础上提出一种新的基于跨层感知的逐跳拥塞控制(CCACL)算法.该算法根据监测到的节点拥塞信息,对上游节点的信息发送速率做出自适应的调整,同时对下一跳节点的拥塞极限阈值进行适当调整,使缓存空间以更快的速度清空,进而缓解网络拥塞.为了确保数据传输的可靠性,CCACL算法在逐跳的可靠性保证机制基础上给出了一种端到端的选择确认机制.仿真结果表明,新算法可有效解决WMN中的拥塞控制问题,提高了分组投递率和网络吞吐量,减少了分组的端到端延时.
In order to solve the problem of gateway congestion control in Wireless Mesh Network (WMN), a new Hop-by-Hop Congestion Control (CCACL) algorithm based on cross-layer sensing is proposed based on the existing network congestion control strategy. Congestion information to make adaptive adjustment to the upstream node’s information sending rate and adjust the congestion threshold of the next hop node at the same time so that the cache space can be emptied faster to alleviate the network congestion In order to ensure data transmission , The CCACL algorithm provides an end-to-end selection confirmation mechanism on a hop-by-hop reliability assurance mechanism.The simulation results show that the new algorithm can effectively solve the congestion control problem in WMN and improve the packet delivery rate and Network throughput reduces packet end-to-end latency.