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IEEE 802.15.4是一个自组织的无线网络标准,其中制定了PHY层和MAC层规范,主要应用场合为低成本、低功耗、低复杂度的无线个域网。许多参数在IEEE 802.15.4标准中仅给出取值范围而并未给出确定的值,虽然这些值对系统性能有着较为显著的影响。个域网中的设备大量采用电池供电,因此实现更低的能量消耗是该网络标准的主要目标。本文通过分析IEEE 802.15.4协议特点,运用NS2网络仿真软件分析IEEE 802.15.4网络结构下数据传输过程中的端到端延时和丢包率情况,为IEEE 802.15.4协议的实际应用提供有意义的参考。
IEEE 802.15.4 is a self-organizing wireless network standard in which PHY and MAC layer specifications are developed. The main applications are low cost, low power and low complexity wireless personal area networks. Many of the parameters in the IEEE 802.15.4 standard give only a range of values and do not give a definitive value, although these values have a more pronounced effect on system performance. Devices in personal area networks are heavily battery powered, so achieving lower energy consumption is the primary goal of this network standard. This paper analyzes the characteristics of IEEE 802.15.4 protocol, using NS2 network simulation software to analyze the end-to-end delay and packet loss rate in the data transmission process under IEEE 802.15.4 network structure, and provides the practical application of IEEE 802.15.4 protocol Meaning of the reference.