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Quality of service for ad hoc on-demand distance vector routing

A mobile ad hoc network (MANET) is a collection of mobile nodes that form a wireless
network without the use of a fixed infrastructure or centralized administration, and every
node acts as a host as well as a router. The topology of an ad hoc network changes frequently
and unpredictably. The mobile nature and dynamic topology of MANETs make
it very difficult to provide Quality-of-Service (QoS) assurance in such networks. Considering
the limited bandwidth and battery power, finding routes that satisfy the bandwidth
constraint of applications is a significant challenge.
Ad hoc on-demand distance vector routing (AODV) is an on-demand routing protocol
that only provides best-effort routes. QS-AODV is proposed in this thesis. It is based
on AODV and creates routes according to the QoS requirements of the applications. It
is shown that QS-AODV provides performance comparable to AODV under light traffic.
In heavy traffic, QS-AODV provides higher packet delivery ratios and lower routing overheads,
at a cost of slightly longer end-to-end delays as the routes in QS-AODV are not
always the shortest. The effects of network size and mobility on the performance of QSAODV
are shown.

Date10 April 2008
CreatorsZhang, Yihai.
ContributorsGulliver, T. Aaron
Source SetsUniversity of Victoria
Detected LanguageEnglish

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