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Title: Traffic management in heterogeneous mobile networks
Author: Jiang, Menglan
ISNI:       0000 0004 6058 1636
Awarding Body: King's College London
Current Institution: King's College London (University of London)
Date of Award: 2017
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Enhancing the efficiency of traffic management and improving the network revenue 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 offer effective network connections and sufficient network resources to increased number of mobile users with various traffic 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.
Supervisor: Aghvami, Abdol-Hamid ; Mahmoodi, Toktam Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available