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首页> 外文会议>Proceedings of the 2013 international conference on wireless networks >A Cluster Based Delay Tolerant MAC Protocol for Underwater Wireless Sensor Network
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A Cluster Based Delay Tolerant MAC Protocol for Underwater Wireless Sensor Network

机译：水下无线传感器网络基于集群的时延容忍MAC协议

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The propagation speed of an acoustic signal is much slower than the speed of a terrestrial radio signal due to the physical characteristics of an underwater acoustic channel. This large delay can impact the throughput of the channel. There is also a very high delay variance which presents unique challenges to the designs of efficient protocols. The inconsistent delay renders many traditional communication protocols insufficient since they rely on accurate estimations of the round trip time (RTT) between two communication nodes. We presented a unique approach to develop a Cluster based delay-tolerant protocol (CBDTP) to address these problems by predicating a value for a sensor node if its data were not received at the sink node instead of having the sensor node retransmit its data. The CBDTP can reduce data traffic over the networks and uses the network resource more efficiently. In this paper we improved our CBDTP protocol by introduced a self-adoptive algorithm at MAC layer protocol to better address the inconsistent delay problems. It improves the performance of CBDTP protocol in a dynamic deployment environment.
机译：由于水下声信道的物理特性，声信号的传播速度远比地面无线电信号的速度慢。此较大的延迟会影响通道的吞吐量。还有一个非常高的延迟变化，这对有效协议的设计提出了独特的挑战。不一致的延迟使许多传统的通信协议不足，因为它们依赖于两个通信节点之间往返时间（RTT）的准确估计。我们提出了一种独特的方法来开发基于群集的延迟容忍协议（CBDTP），以通过预测传感器节点的值来解决这些问题（如果在接收器节点未接收到其数据），而不是让传感器节点重新发送其数据。 CBDTP可以减少网络上的数据流量并更有效地使用网络资源。在本文中，我们通过在MAC层协议中引入自自适应算法来改进CBDTP协议，以更好地解决不一致的延迟问题。它在动态部署环境中提高了CBDTP协议的性能。

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