Route Stability Based QoS Routing in Mobile Ad Hoc Networks

  • Authors:

  • Nityananda Sarma;Sukumar Nandi

  • Affiliations:

  • Department of Computer Science and Engineering, Indian Institute of Technology, Guwahati, India;Department of Computer Science and Engineering, Indian Institute of Technology, Guwahati, India

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2010

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Abstract

To provide high quality communications service among mobile wireless devices is basically a challenging task in wireless ad hoc networks. In this paper, we propose a Route Stability based QoS Routing (RSQR) protocol in Mobile Ad Hoc Networks (MANETs) which is an extension of QoS routing with throughput and delay constraints. Ensuring a data path to be valid for sufficiently longer period of time is a very difficult problem in MANET due to its highly dynamic nature. We propose a simple model for computing link stability and route stability based on received signal strengths. By including some extra fields in route request/reply packets, the route stability information can be utilized to select a route with higher stability among all the feasible routes between a given source destination pair. Further, inclusion of a signal strength based admission control enhances the performance of the routing. Results of our experiments show performance improvements in terms of packet delivery ratio, control overhead and average end-to-end delay in comparison with a QoS routing protocol proposed by Q. Xue and A. Ganz.