A distance-aware replica adaptive data gathering protocol for Delay Tolerant Mobile Sensor Networks.

A distance-aware replica adaptive data gathering protocol for Delay Tolerant Mobile Sensor Networks.
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容错移动传感器网络的距离感知副本自适应数据收集协议

DOI:
10.3390/s110404104
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发表时间:
2011
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Wang X
Wang X
中科院分区:
其他
文献类型:
--
作者:
Feng Y;Gong H;Fan M;Liu M;Wang X

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在具有间歇性连接和频繁变化的网络拓扑等固有特性的延迟容忍移动传感器网络(DTMSNs)中,利用多副本方案来提高数据收集性能是合理的。然而,大多数现有的多副本方法向网络中注入大量的消息副本以增加消息传递的概率,这可能会更快地耗尽每个移动节点有限的电池电量,并导致对DTMSN有限资源的过度竞争,因此一个合适的数据收集方案需要在副本消息数量和网络性能之间进行权衡。在本文中,我们提出了一种新的数据收集协议,称为DRADG(距离感知副本自适应数据收集协议),它通过利用自适应算法减少消息的冗余副本数量来节约网络资源消耗,并通过将移动传感器的传递概率作为主要路由度量来实现良好的网络性能。仿真结果表明,与几种当前的DTMSN数据收集方案相比,所提出的DRADG协议以低得多的传输开销实现了相当或更高的消息传递率。
In Delay Tolerant Mobile Sensor Networks (DTMSNs) that have the inherent features of intermitted connectivity and frequently changing network topology it is reasonable to utilize multi-replica schemes to improve the data gathering performance. However, most existing multi-replica approaches inject a large amount of message copies into the network to increase the probability of message delivery, which may drain each mobile node’s limited battery supply faster and result in too much contention for the restricted resources of the DTMSN, so a proper data gathering scheme needs a trade off between the number of replica messages and network performance. In this paper, we propose a new data gathering protocol called DRADG (for Distance-aware Replica Adaptive Data Gathering protocol), which economizes network resource consumption through making use of a self-adapting algorithm to cut down the number of redundant replicas of messages, and achieves a good network performance by leveraging the delivery probabilities of the mobile sensors as main routing metrics. Simulation results have shown that the proposed DRADG protocol achieves comparable or higher message delivery ratios at the cost of the much lower transmission overhead than several current DTMSN data gathering schemes.
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