A Hybrid Cross-Layer Energy Efficient Protocol in Sink-Oriented Wireless Sensor Networks

• Main Authors: Shun-Chih Hsu, 許順智
• Other Authors: 張軒彬
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/42592038968217493744

博士 === 國立中興大學 === 資訊科學與工程學系所 === 100 === To provide an optimal resolution of data transmission in sink-oriented wireless sensor networks, we need to reduce the routing control packets derived from network layers of sensor nodes to increase the acceptance rate of data packets at the application layer of the sink. At the mean time, we have to avoid unnecessary energy drainage at each sensor node to extend the entire network lifetime from being partitioned in the early phase. In the past, some researchers used a funneling-MAC solution which implements a hybrid MAC scheme (TDMA/CSMA) in the intensity region of the event funnel to mitigate the congestion phenomenon near the sink. However, the network efficiency was limited because they didn’t consider any scheme to reduce the routing control packets, whereas extra beacon overhead was needed for the sink to transmit the synchronous schedule into the network. In this dissertation, we propose a hybrid cross-layer energy efficient protocol (CEEP) which results in a loosely coupled style without creating any extra interfaces for information to provide communication efficiency in sink-oriented wireless sensor networks. Congestion mitigating, as is provided through the concept of the Hybrid Efficient Routing Protocol (HERP) which classifies the network coverage into proactive region and reactive region, can serve as a basis for such an efficient routing protocol on the sensor nodes which are designated to collect and transmit information toward the sink. At the mean time, the entire network life time is extended by improving the energy consumption on each sensor node over the network. Furthermore, theoretically and empirically, the results show that CEEP can boost network fidelity by adapting proactive and reactive routing protocols under intense traffic and effectively achieve power efficiency for mobile communications under light traffic by determining the sleep-wakeup schedules of the sensor nodes. Thereafter, communications with such embedded operation have provided sensor devices an integrated technology to efficiently transceive data packets in sink-oriented wireless sensor networks.