Call Admission Control in Wireless Mesh Networks

Student thesis: Doctoral ThesisDoctor of Philosophy


Efficiency in managing scarce wireless resources has been a major design
obstacle in wireless mobile networks since its advent. A large
body of work has been published on the subject in relation to the
first two generation and third generation (3G) of wireless networks.
However, these solutions are not readily applicable to the future IP
based multi-hop wireless networks. Increased trend in the number
of users accessing multimedia rich traffic, and the impacts of mobility
management support mechanisms alongside the shared nature of
backhaul nodes demand exploration of new avenues of resource management
policies. In this thesis a set of schemes are proposed to address
the issue of Call Admission Control (CAC) in future multi-hop
IP based mobile networks. The first scheme is based on a joint CAC
and route assignment design mechanism in Wireless Mesh Networks
(WMNs) environment, addressing issues such as pricing policies, wireless
resource constraints of the access and backhaul links as well as
maximising network provider's revenue. Study's focus is then shifted
towards CAC design in Mobility Agent (MA) based Proxy Mobile
IPv6 (PMIPv6) networks. A novel class-based CAC mechanism was
proposed with the aim of eliminating bottleneck effect at the MAs.
To further improve the overall capacity of the network, in conjunction
with the proposed CAC mechanism, a modified version of a previously proposed Route Optimisation (RO) scheme is implemented. The performance of the proposed schemes is investigated and analysed through extensive simulations. Comparative studies are then carried out to examine the network provider's total revenue gain in WMNs environment, total blocking probability and per class blocking probability in PMIPv6 networks.
Date of Award2017
Original languageEnglish
Awarding Institution
  • King's College London
SupervisorVasilis Friderikos (Supervisor) & Abdol-Hamid Aghvami (Supervisor)

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