KSII Transactions on Internet and Information Systems (TIIS)

  • 제4권5호
  • /
  • Pages.753-775
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  • 2010
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  • 1976-7277(pISSN)
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  • 1976-7277(eISSN)
한국인터넷정보학회 (Korean Society for Internet Information)
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A Novel Opportunistic Greedy Forwarding Scheme in Wireless Sensor Networks

  • Bae, Dong-Ju (School of Information and Communication Engineering Sungkyunkwan University) ;
  • Choi, Wook (Department of Computer Science and Engineering Hankuk University of Foreign Studies) ;
  • Kwon, Jang-Woo (Department of Computer Engineering Kyungwon University) ;
  • Choo, Hyun-Seung (School of Information and Communication Engineering Sungkyunkwan University)
  • 투고 : 2010.03.11
  • 심사 : 2010.09.04
  • 발행 : 2010.10.30
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초록

Greedy forwarding is a key mechanism of geographic routing using distance as a metric. As greedy forwarding only uses 1-hop neighbor node information, it minimizes routing overhead and is highly scalable. In existing greedy forwarding schemes, a node selects a next forwarding node based only on the distance. However, the signal strength in a realistic environment reduces exponentially depending on the distance, so that by considering only the distance, it may cause a large number of data packet retransmissions. To solve this problem, many greedy forwarding schemes have been proposed. However, they do not consider the unreliable and asymmetric characteristics of wireless links and thus cause the waste of limited battery resources due to the data packet retransmissions. In this paper, we propose a reliable and energy-efficient opportunistic greedy forwarding scheme for unreliable and asymmetric links (GF-UAL). In order to further improve the energy efficiency, GF-UAL opportunistically uses the path that is expected to have the minimum energy consumption among the 1-hop and 2-hop forwarding paths within the radio range. Comprehensive simulation results show that the packet delivery rate and energy efficiency increase up to about 17% and 18%, respectively, compared with the ones in PRR${\times}$Distance greedy forwarding.

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참고문헌

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피인용 문헌

  1. Converged Mobile Cellular Networks and Wireless Sensor Networks for Machine-to-Machine Communications vol.6, pp.1, 2010, https://doi.org/10.3837/tiis.2012.01.009