Abstract: Energy-conserving is very important for Mobile Autonomous Network（MANET）.Node’ sleeping is an important method to conserve energy.A location based scheduling of sleeping protocol named Geographical Adaptive Fidelity（GAF） is researched，and then an improved method is proposed.GAF and improved GAF protocols are evaluated by NS.Performance results reveal that improved GAF performs better than GAF in term of network lifetime，number of survived node and average fraction of successful delivered packets.

摘要： 节能在移动自组网络中具有重要意义，利用节点睡眠进行节能成为一个重要手段。研究基于位置的节点睡眠调度协议GAF（Geographical Adaptive Fidelity）协议的性能，提出一种基于强制睡眠策略的改进方案。通过NS仿真器对GAF和改进的GAF进行了评估。实验结果表明，改进的GAF协议在网络生存时间、平均节点存活数和传包率方面均优于GAF协议。