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  • Research Article
  • Open Access

Position-Based Relaying with Hybrid-ARQ for Efficient Ad Hoc Networking

EURASIP Journal on Wireless Communications and Networking20052005:734983

  • Received: 15 June 2004
  • Published:


This paper presents and analyzes an integrated, cross-layer protocol for wireless ad hoc networking that utilizes position location (e.g., through an onboard GPS receiver) and jointly performs the operations of network-layer relaying and link-layer ARQ-based error control. The protocol is a modified version of the hybrid-ARQ-based intra-cluster geographically-informed relaying (HARBINGER) protocol (2005) and unifies the concepts of geographic random forwarding (GeRaF) (2003), point-to-point hybrid-ARQ (2001), and cooperative diversity (2004). The modification makes the protocol especially suitable for sensor networks whose nodes cycle in and out of sleep states and permits a closed-form analysis. Performance bounds and simulations indicate the potential for a dramatic improvement in the tradeoff between active node density and end-to-end message delay as compared with the GeRaF protocol and are used to motivate further study of practical implementation issues.


  • relay networks
  • ad hoc networking
  • cross-layer protocols
  • hybrid-ARQ
  • GeRaF

Authors’ Affiliations

Lane Department of Computer Science and Electrical Engineering, College of Engineering and Mineral Resources, West Virginia University, Morgantown, WV 26506-6109, USA