Abstract
IEEE802.15.4标准的保障时隙（GTS）机制可分配多个时隙,用于保障实时性数据的传输。针对非竞争接入期多时隙下GTS性能分析的不足,利用网络微积分法分析时延和吞吐量服务曲线及其与能耗的关系,改进IEEE802.15.4传感器节点模型,建模仿真研究GTS参数对网络性能（时延、吞吐量及能耗）的影响。仿真结果表明：根据高低突发性数据率的情况,最优化配置下的GTS可以满足实时性数据的传输。
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