A backup path routing for guaranteeing bandwidth in mobile ad hoc networks for multimedia applications

  • Authors:

  • Kilhung Lee

  • Affiliations:

  • Department of Computer Science and Engineering, Seoul National University of Science and Technology, Seoul, South Korea 139-743

  • Venue:
  • Multimedia Tools and Applications
  • Year:
  • 2012

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Abstract

This paper suggests a backup path routing scheme in ad hoc networks for multimedia applications. A data path is established in an on-demand manner when there is a need to send data. A primary and a backup path are created as a result of a route control message exchange process. Each control message has additional information for guaranteeing the service quality. A backup path is configured around the primary path in multi-hop wireless networks. After detecting a failure when sending data, a repairing procedure occurs near the failed node of the primary path. The proposed scheme exploits the route request and reply information exchanged between nodes to create a backup path. Proposed backup routing scheme uses a one-hop search method, and the rerouted path length is two-hop at maximum. The service quality as measured by the error rate and delay is considered when establishing and repairing a route by making an allowance for the required bandwidth. Simulation results show that the proposed backup path routing scheme has a better data delivery ratio and an improved end-to-end data delay while guaranteeing the requested bandwidth for multimedia application.