基于业务差异化的自适应p-persistent MAC方案

2012 Third International Conference on Networking and Distributed Computing Pub Date : 2012-10-21 DOI:10.1109/ICNDC.2012.30

Wan Xiao-dong, Chen Xiao, Min Jie, Zhang Lian-jun

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引用次数: 0

摘要

针对无线传感器网络提供QoS保证的差异化服务，提出了一种自适应p-persistent MAC方案，命名为DSA-MAC (differentiation service based adaptive MAC scheme)。该方案引入了一个新的参数持久因子，并结合参数的动态调整，使其最优值能够根据网络状态动态跟随负荷的变化。同时，通过最优持久因子更新各优先级类的传输概率，使信道利用率接近其最优值。仿真结果表明，在各种不同的WSN环境下，DSA-MAC比基于CSMA/CA的标准DCF具有更高的吞吐量和更短的延迟，并且实现简单易行

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A Service Differentiation Based Adaptive p-persistent MAC Scheme

This paper proposes an adaptive p-persistent MAC scheme, named DSA-MAC (differentiation service based adaptive MAC scheme), for WSN to provide the QoS guaranteed differentiation services. The proposed scheme introduces a new parameter, persistent factor, and combines with the dynamic adjustment of parameters, whose optimal value can dynamically follow the change of the load based on the network status. At the same time, the transmission probability of each priority class can be updated by optimal persistent factor to achieve the channel utilization close to its optimal value. Simulation results show that DSA-MAC can achieve much higher throughput and have shorter delay than standard CSMA/CA based DCF in all different WSN environments, and is simple and easy to implement

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2012 Third International Conference on Networking and Distributed Computing

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