摘要
给出一种逐跳跨层拥塞控制机制,依据检测缓冲区占用率和拥塞度所获得的拥塞信息,在传输层开环逐跳速率控制的基础上,自适应地调整节点MAC层信道接入优先级,使整个传感器网络中的节点根据局部的拥塞状态调整信息发送速率。NS2仿真结果表明,该算法可有效地提高网络性能和拥塞控制效率。
This paper proposes a hop-by-hop cross-layer congestion control algorithm,according to detecting buffer occupancy ratio and congestion degree.This algorithm adaptively adjusts channel access priorities in MAC layer based on open loop hop-by-hop rate control.It can adaptively adjust the information sending rate according to local congestion condition of network nodes.NS simulation results show that the algorithm can improve network performance and congestion control efficiency.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第16期108-109,115,共3页
Computer Engineering
基金
国家自然科学基金资助项目(60703101)
关键词
无线传感器网络
跨层控制
信道接入优先级
拥塞检测
拥塞控制
Wireless Sensor Network（WSN）
cross-layer control
channel access priority
congestion detection
congestion control
