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.
| Identifer | oai:union.ndltd.org:uvic.ca/oai:dspace.library.uvic.ca:1828/623 |
| Date | 10 April 2008 |
| Creators | Zhang, Yihai. |
| Contributors | Gulliver, T. Aaron |
| Source Sets | University of Victoria |
| Detected Language | English |
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