The problem of ensuring Quality of Service (QoS) on a TCP/IP based fixed-infrastructure
network has been well studied and several working proposals exist. An
allied problem is that of ensuring QoS on an ad-hoc wireless network, where the
requirements are similar, but the operating conditions are different enough to warrant
this problem to be dealt with separately and extensively. The QoS reservation and
management schemes which work on a fixed infrastructure network perform poorly in
ad-hoc wireless networks, mainly because of the difficulty in reserving bandwidth on a
contention-based medium, and problems which arise from the possible motion of the
hosts and the variability of the quality of the connection.
This thesis is a proposal to use the concept of active nodes to set up and maintain
QoS. Active nodes are nodes which can execute code on behalf on other remote
applications. An algorithm for using active nodes to set up and maintain QoS
parameters is proposed, and the use of buffer reservation schemes in reserving
bandwidth is explained. The proposal is implemented on the network simulator NS-2,
and we study the uses and limitations of this proposal, with specific reference to the
performance under different operating conditions. / Graduation date: 2003
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/30318 |
| Date | 16 May 2002 |
| Creators | Rajogpalan, Santosh |
| Contributors | Singh, Suresh P. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
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