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Performance tradeoff of MVNOs in OFDMA-based virtualized wireless networks
journal contribution
posted on 2021-11-01, 10:35 authored by Mohammad Robat Mili, Shenhong Li, Fatemeh Mokhtari, Mahsa DerakhshaniMahsa Derakhshani, Farid Ashtiani, Tho Le-NgocIn this paper, we analyze the tradeoff between the profits gained by mobile virtual network operators (MVNOs) in an orthogonal frequency division multiple access (OFDMA)-based virtualized wireless network (VWN). In this respect, MVNOs rent the network resources from a mobile network operator (MNO) to create virtual resources based on allocated rates and the cost due to allocated transmit powers in two different strategies: resource-based isolation strategy and ratebased isolation strategy. In resource-based isolation strategy, it is assumed that the whole bandwidth in each base station is divided equally between MVNOs whereas in rate-based isolation strategy, the whole bandwidth in each base station is allocated dynamically between MVNOs. We then formulate a multiobjective optimization problem (MOOP) to show the tradeoff between the maximum profit of each MVNO. To solve the formulated MOOP, we adopt the weighted Tchebycheff approach, which can provide the complete Pareto optimal region for nonconvex problems. Thus, by developing such formulation, we will be able to find the best profit gained by MVNOs. We also employ monotonic optimization to obtain the global optimal solutions of the non-convex problems by applying polyblock outer approximation algorithm. Our numerical results show the importance of the aforementioned tradeoffs and confirm that the proposed geometric programming (GP) based algorithm achieves excellent performance as compared to the monotonic method.
Funding
Royal Academy of Engineering under the Leverhulme Trust Research Fellowship scheme under Grant Derakhshani-LTRF1920\16\67.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
IEEE Transactions on Vehicular TechnologyVolume
71Issue
1Pages
697 - 712Publisher
Institute of Electrical and Electronics EngineersVersion
- AM (Accepted Manuscript)
Rights holder
© IEEEPublisher statement
© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Acceptance date
2021-10-13Publication date
2021-11-13Copyright date
2022ISSN
0018-9545eISSN
1939-9359Publisher version
Language
- en
Depositor
Dr Mahsa Derakhshani. Deposit date: 31 October 2021Usage metrics
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