赵官宝, 刘云. 无线传感网络中预设节点优先级的延时分析[J]. 云南大学学报(自然科学版), 2014, 36(3): 329-334. doi: 10.7540/j.ynu.20130366
引用本文: 赵官宝, 刘云. 无线传感网络中预设节点优先级的延时分析[J]. 云南大学学报(自然科学版), 2014, 36(3): 329-334. doi: 10.7540/j.ynu.20130366
ZHAO Guan-bao, LIU Yun. Delay analysis of the wireless sensor network based on the default priority[J]. Journal of Yunnan University: Natural Sciences Edition, 2014, 36(3): 329-334. DOI: 10.7540/j.ynu.20130366
Citation: ZHAO Guan-bao, LIU Yun. Delay analysis of the wireless sensor network based on the default priority[J]. Journal of Yunnan University: Natural Sciences Edition, 2014, 36(3): 329-334. DOI: 10.7540/j.ynu.20130366

无线传感网络中预设节点优先级的延时分析

Delay analysis of the wireless sensor network based on the default priority

  • 摘要: 随着无线传感网络节点的增加,网络延时、丢包随之增加.基于有的节点产生的数据相对其他节点会比较重要.为有效减小这类节点的延时,提出了一种优先级算法,在可能改变其他节点传输延迟的情况下,通过给这类特定节点预设较高数据传输优先级,以较小竞争延时来使其能比其他节点更及时地发送产生的数据.仿真结果表明,在实时传输方式下,预设了节点数据传输优先级的网络能传输更多的重要数据.此外,该方案不仅使重要节点的延时大大减小,而且使整个网络的平均延时明显比无优先级节点网络的小,使网络整体性能显著提高.

     

    Abstract: With the increasing of wireless sensor network nodes, network latency,packet loss increases.Some nodes are more likely to generate important data relative to other nodes.In order to reduce the node delay effectively,we propose a priority algorithm in this paper.By setting higher priorities to these nodes,they send data sooner than other nodes by reducing the contention delay,in the case of the other nodes transmission delay may change.Simulation results show that a network with prioritized nodes sends more important data in a real time manner.In addition,the scheme not only makes the delay of important nodes greatly reduce,but also enables average delay of the prioritized network less than equal-priority nodes network and the overall network performance significantly improved.

     

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