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Data Dissemination Protocols For Wireless Sensor Networks With Multiple Mobile Sinks

Posted on:2011-11-07Degree:MasterType:Thesis
Country:ChinaCandidate:L SunFull Text:PDF
GTID:2178360308952327Subject:Control theory and control engineering
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With the rapid progress of the technology of sensor, computer science, and wireless communication, the wireless sensor network has developed greatly in recent years. A wireless sensor network is a self-organized wireless network composed of a large number of micro sensor nodes equipped with communication and computation modules, which is usually utilized to carry out unmanned monitoring. In military applications and industrial environment, the sink is more likely to be able to move. The mobility increases the sink's ability to react quickly but makes it a more challenging problem to collect data from the wireless sensor network on the move and reduce the energy consumption of the wireless sensor network during this procedure. Since the energy is a rare resource for the sensor node and to supplement energy for a large number of sensor nodes is impossible in many critical applications, it is an important task to reduce the energy consumption in data collection with high data delivery ratio.In this thesis, we study the problem of data dissemination in wireless sensor networks with multiple mobile sinks, which is designed for critical applications. After summarizing the related work and analyzing some representative data dissemination protocols, we propose a new data dissemination protocol– MQDD (Multicast-Query-based Data Dissemination). MQDD makes full use of the broadcast property in wireless communication by both utilizing unicast and multicast to construct the rendezvous area for data collection. The source node disseminates event-state data with unicast and the sink queries the wireless sensor network with multicast. MQDD has the merits of high scalability, high reliability, low energy consumption and involving much less sensor nodes during the data dissemination procedure than the other protocols do.Furthermore, we provide the theoretical analysis and simulation of MQDD in NS-2. The results confirm that MQDD is a less energy-consuming, highly reliable and low-delay data dissemination protocol.
Keywords/Search Tags:industrial wireless sensor network, data dissemination, mobile sink, geographic routing
PDF Full Text Request
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