Abstract
Enhancing the efficiency of trffiac management and improving the networkrevenue for operators are the most essential issues in heterogeneous mobile
networks. As the heterogeneous mobile network is composed of diverse network
technologies, it is expected to oer effective network connections and
sufficient network resources to increased number of mobile users with various
trafficc demands. Moreover, the price of each selling resources might
vary significantly from the business point of view. Therefore, heterogeneous
mobile networks aim to provide superior user experience, guarantee efficient
resource utilisation and maximise mobile network revenue.
The main objective of this thesis is to manage and allocate limited network
resources to mobile users for improving their quality level and network
revenue. The primary focus of this thesis is on developing valid network
architecture for efficient resource allocation and designing novel optimisation
algorithms for effective traffic management. Besides, the other focus of
this thesis is on exploring future works in the field of traffic management in
heterogeneous mobile networks.
This thesis covers two aspects of traffic management from the mobile user
side and the network side. With the motivation of ever increasing traffic
demands in heterogeneous mobile networks, maintaining quality level of mobile
users, improving resource utilisation and maximising network revenue
are more than ever challenging. In this thesis, a fully distributed device-
controlled network assisted mechanism for network selection has been developed.
Decisions in this mechanism are made by mobile devices only. The
device controlled mechanism mainly focuses on Quality of Service (QoS) requirements
of mobile devices, while network information and location profiles
are provided by the network assisted part. In order to improve the network
performance, a novel semi-centralised QoS-based traffic management mechanism
has been developed further. The semi-centralised mechanism aims to
maintain the quality level of mobile users and guarantee the fairness among
mobile users in heterogeneous mobile networks.
Moreover, a novel prioritised admission control mechanism has been developed
for network slicing. Network slicing, where virtualised network resources
are packaged and assigned in an isolated manner to set of mobile
users, is considered as a key paradigm to implement resource allocation based
on diversity of resource requirements. The mechanism is heuristic based
and contains two-tier priority level among different service slices and mobile
users. The mechanism aims to maximise resource utilisation and guarantee
the mobile users resource requirements. Apart from this, network slicing is
also significant for the business model of operators. As as result, a novel
economics based traffic management mechanism has been developed further.
It aims to maximise the network revenue and enhance network utilisation in
heterogeneous mobile networks.
Finally, the thesis is concluded and some proper future researches are included as well.
| Date of Award | 2017 |
|---|---|
| Original language | English |
| Awarding Institution |
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| Supervisor | Toktam Mahmoodi (Supervisor) & Abdol-Hamid Aghvami (Supervisor) |