Trial-Number Reset Mechanism at MAC Layer for Mobile Ad Hoc Networks

  • Dongkyun Kim
  • Hanseok Bae
Conference paper

DOI: 10.1007/978-3-540-30197-4_24

Part of the Lecture Notes in Computer Science book series (LNCS, volume 3262)
Cite this paper as:
Kim D., Bae H. (2004) Trial-Number Reset Mechanism at MAC Layer for Mobile Ad Hoc Networks. In: Freire M.M., Chemouil P., Lorenz P., Gravey A. (eds) Universal Multiservice Networks. Lecture Notes in Computer Science, vol 3262. Springer, Berlin, Heidelberg

Abstract

MANET(Mobile Ad Hoc Networks) routing protocols definitely need a route maintenance process due to frequent route breakage caused by node mobility, which takes advantage of the MAC layer’s handshaking service (RTS-CTS-DATA-ACK exchanged packet transmission is considered in this paper). Reaching the limited number of trial of packet transmission, namely retry-limit, before a reception of a corresponding ACK packet indicating a successful data transmission, is used to notify the routing protocol of a link breakage, that is, a route dis-connection. The packet, therefore, is discarded and the source is accordingly requested to perform a route recovery with producing many flooded route discovery packets. However, since a reception of a CTS packet during the MAC layer’s handshaking means an availability of route, the current number of trial used to detect a link breakage should not increase, but it should be reset to 0, instead. Furthermore, the absence of an ACK packet during a given ACK timeout after a successful reception of CTS packet should not increase the current number of trial for the same purpose. We show the performance improvement with this trial-number reset mechanism by using GloMoSim simulator with AODV routing protocol.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Dongkyun Kim
    • 1
  • Hanseok Bae
    • 1
  1. 1.Department of Computer EngineeringKyungpook National UniversityDaeguKorea

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