TY  - JOUR
AU  - Thenmozhi, D. S. 
AU  - Rajaram, M. 
PY  - 2011
TI  - An Effective Contention Aware Stable Path Finding Approach to Provide Quality of Service in Mobile Ad hoc Networks
JF  - Journal of Computer Science
VL  - 7
IS  - 3
DO  - 10.3844/jcssp.2011.352.358
UR  - https://thescipub.com/abstract/jcssp.2011.352.358
AB  - Problem statement: The application of Mobile Ad hoc NETworks (MANETs) has been
increasing every day. Most applications that attract interest for use in current wired networks (e.g.
video conferencing, on line movies and camera enabled instant messenger) would attract interest for
MANETs also. Many applications that use MANETs include multimedia data that require Quality of
Service (QoS) support for effective transmission. Basically meeting QoS is a mesh of multiple
parameters. QoS routing based on multiple independent constraints has been proven to be NPcomplete.
Hence, hardly any exact algorithms were proposed for this kind of problems. In this study
we propose a new approach for QoS routing based on multiple constraints. Approach: QoS support
can be achieved by finding a route satisfying the application requirements. This needs an admission
control along the route to prevent new flows from consuming too many resources and disrupting the
guarantees made to existing flows. In our work, the normal AODV is extended to perform QoS routing
based on bandwidth requirement and link stability constraints. Link stability parameter is considered in
an opportunistic way so that effective path meeting the required bandwidth and will last for complete
session is established. Results: Simulation results show that our contention aware, link stability based
route finding technique performs better than AODV in terms of throughput and control message
overhead. It improves packet delivery ratio greatly without affecting the overall end-to-end throughput
of existing flows. Conclusion: This multi constraint based AODV performs path finding with less
overhead by adopting passive approach of listening to the medium. Hierarchical treatment of the
metrics enables QoS robustness hence reduces subsequent route finding latency.