Network-layer reservation TDM for ad-hoc 802.11 networks

Duff, K. C. (2008) Network-layer reservation TDM for ad-hoc 802.11 networks. Masters thesis, Rhodes University.




Ad-Hoc mesh networks offer great promise. Low-cost ad-hoc mesh networks can be built using popular IEEE 802.11 equipment, but such networks are unable to guarantee each node a fair share of bandwidth. Furthermore, hidden node problems cause collisions which can cripple the throughput of a network. This research proposes a novel mechanism which is able to overcome hidden node problems and provide fair bandwidth sharing among nodes on ad-hoc 802.11 networks, and can be implemented on existing network devices. The scheme uses TDM (time division multiplexing) with slot reservation. A distributed beacon packet latency measurement mechanism is used to achieve node synchronisation. The distributed nature of the mechanism makes it applicable to ad-hoc 802.11 networks, which can either grow or fragment dynamically.

Item Type:Thesis (Masters)
Additional Information:M.Sc. (Computer Science)
Uncontrolled Keywords:802.11 networks, ad-hoc networks, ad hoc networks, access method, fairness, hidden node, multi-hop, TDM, time division multiplexing, access control, bandwidth, computer networks
Subjects:Y Unknown > Subjects to be assigned
Divisions:Faculty > Faculty of Commerce > Information Systems
Faculty > Faculty of Science > Information Systems
Supervisors:Terzoli, A. (Prof.) and Clayton, P. (Prof.)
ID Code:1146
Deposited By: Ms Michelle Booysen
Deposited On:01 Dec 2008
Last Modified:20 Jun 2013 08:36
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