Dynamic multipath allocation in Ad Hoc networks

Yosi Ben-Asher, Sharoni Feldman, Moran Feldman

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Ad Hoc networks are characterized by fast dynamic changes in the topology of the network. A known technique to improve QoS is to use Multipath routing where packets (voice/video/...) from a source to a destination travel in two or more maximal disjoint paths. We observe that the need to find a set of maximal disjoint paths can be relaxed by finding a set of paths S wherein only bottlenecked links are bypassed. In the proposed model we assume that there is only one edge along a path in S is a bottleneck and show that by selecting random paths in S the probability that bottlenecked edges get bypassed is high. We implemented this idea in the MRA system which is a highly accurate visual ad hoc simulator currently supporting two routing protocols AODV and MRA. We have extended the MRA protocol to use multipath routing by maintaining a set of random routing trees from which random paths can be easily selected. Random paths are allocated/released by threshold rules monitoring the session quality. The experiments show that: 1) session QoS is significantly improve, 2) the fact that many sessions use multiple paths in parallel does not depredate overall performances, 3) the overhead in maintaining multipath in the MRA algorithm is negligible.

Original languageEnglish
Title of host publicationProceedings - 2nd Int. Conf. Sensor Technol. Appl., SENSORCOMM 2008, Includes
Subtitle of host publicationMESH 2008 Conf. Mesh Networks; ENOPT 2008 Energy Optim. Wireless Sensors Networks; UNWAT 2008 Under Water Sensors Sys.
Pages824-832
Number of pages9
DOIs
StatePublished - 2008
Event2nd International Conference on Sensor Technologies and Applications, SENSORCOMM 2008 - Cap Esterel, France
Duration: 25 Aug 200831 Aug 2008

Publication series

NameProceedings - 2nd Int. Conf. Sensor Technol. Appl., SENSORCOMM 2008, Includes: MESH 2008 Conf. Mesh Networks; ENOPT 2008 Energy Optim. Wireless Sensors Networks, UNWAT 2008 Under Water Sensors Systems

Conference

Conference2nd International Conference on Sensor Technologies and Applications, SENSORCOMM 2008
Country/TerritoryFrance
CityCap Esterel
Period25/08/0831/08/08

Keywords

  • Ad-Hoc
  • Multi-path
  • Streams
  • Wireless

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Control and Systems Engineering

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