计算机科学 ›› 2015, Vol. 42 ›› Issue (5): 124-131.doi: 10.11896/j.issn.1002-137X.2015.05.025
杨 兵,张珂珂,李国徽,何伟康
YANG Bing, ZHANG Ke-ke, LI Guo-hui and HE Wei-kang
摘要： 在无线传感器网络中,MAC协议负责协调节点竞争,为节点分配共享的无线信道资源。使用节点采集信号强度信息来划分梯度,依据梯度将事件域内节点分配到不同时间空间中来竞争信道,可以减轻信道的负担。仿真实验表明,引入自适应的梯度划分算法能很好地适应网络拓扑结构的变化,采用的梯度跳跃机制可以有效减小由于梯度划分而带来的延迟,并且,所设计的空间相关性控制策略能够有效减小重建误差。
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