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›› 2015, Vol. 32 ›› Issue (2): 273-280.DOI: 10.7523/j.issn.2095-6134.2015.02.018

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An adjustable local-flooding-based routing protocol for wireless sensor networks with mobile sink

YU Sheng1, SHANG Dezhong1, ZHOU Meng2, ZHANG Baoxian1,3   

  1. 1. Research Center of Ubiquitous Sensor Network, University of Chinese Academy of Science, Beijing 100049, China;
    2. Department of Technology, China Mobile, Beijing 100033, China;
    3. Jiangsu Internet of Things Research and Development Center, Wuxi 214135, Jiangsu, China
  • Received:2014-04-02 Revised:2014-04-22 Online:2015-03-15

Abstract:

With the development of the smart mobile devices, wireless sensor networks with mobile sink have attracted a lot of research interest in recent years. Deploying mobile sink can alleviate the hot spot issue caused by deploying static sinks, and can largely prolong the network lifetime. However, sink mobility can cause unexpected dynamic changes of network topology and data routing paths, which poses challenges in routing protocol design. We propose an adjustable local-flooding-based routing protocol (ALFRP) which uses constrained flooding to maintain efficient routing structure in a network. ALFRP uses a stretch ratio parameter to control the balance between control overhead and data transmission cost. To achieve high routing performance, ALFRP adopts anchor-node chain to reduce protocol overhead and works to periodically rebuilt network-wide data routing tree for load balancing. Simulation results show that ALFRP reduces the routing update overhead by nearly 50% and significantly improves the network lifetime while keeping a very high data packet delivery ratio and low total data transmission cost compared to the state-of-the-art protocols.

Key words: wireless sensor network, mobile sink, routing protocol, adjustable local flooding

CLC Number: