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首页> 外文会议>9th ACM/IEEE international conference on information processing in sensor networks 2010 >Adaptive IEEE 802.15.4 Protocol for Energy Efficient, Reliable and Timely Communications *
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Adaptive IEEE 802.15.4 Protocol for Energy Efficient, Reliable and Timely Communications *

机译：自适应IEEE 802.15.4协议，可实现节能，可靠和及时的通信*

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摘要

The IEEE 802.15.4 standard for wireless sensor networks can support energy efficient, reliable, and timely packet transmission by tuning the medium access control parameters macMinBE, macMax-CSMABackoffs, and macMaxFrameRetries. Such a tuning is difficult, because simple and accurate models of the influence of these parameters on the probability of successful packet transmission, packet delay and energy consumption are not available. Moreover, it is not clear how to adapt the parameters to the changes of the network and traffic regimes by algorithms that can run on resource-constrained nodes. In this paper, an effective analytical model is used to derive an adaptive algorithm at the medium access control layer for minimizing the power consumption while guaranteeing reliability and delay constraints in the packet transmission. The algorithm does not require any modifications of the IEEE 802.15.4 standard and can be easily implemented on existing network nodes. Numerical results show that the analysis is accurate, that the proposed algorithm satisfies reliability and delay constraints, and ensures a longer lifetime of the network under both stationary and transient network conditions.
机译：通过调整媒体访问控制参数macMinBE，macMax-CSMABackoffs和macMaxFrameRetries，无线传感器网络的IEEE 802.15.4标准可以支持节能，可靠和及时的数据包传输。这样的调整是困难的，因为没有这些参数对成功分组传输，分组延迟和能量消耗的影响的简单而准确的模型。此外，尚不清楚如何通过可在资源受限节点上运行的算法使参数适应网络和流量状况的变化。在本文中，有效的分析模型用于在媒体访问控制层推导自适应算法，以在保证分组传输的可靠性和延迟约束的同时将功耗降至最低。该算法不需要对IEEE 802.15.4标准进行任何修改，并且可以在现有网络节点上轻松实现。数值结果表明，该分析是准确的，所提出的算法满足可靠性和时延约束条件，并在静态和瞬态网络条件下确保更长的网络寿命。

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