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Title: Energy-efficient resource allocation in multi-cell virtualized wireless networks
Authors: Dawadi, Rajesh
Parsaeefard, Saeedeh
Derakhshani, Mahsa
Le-Ngoc, Tho
Keywords: Computer networks
Virtualized wireless networks
Issue Date: 2015
Publisher: © IEEE
Citation: DAWADI, R. ... et al., 2015. Energy-efficient resource allocation in multi-cell virtualized wireless networks. IN: Proceedings of 2015 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB 2015), Montreal, Canada, 4-7 October 2015, DOI: 10.1109/ICUWB.2015.7324446.
Abstract: This paper considers the down-link transmission of an OFDMA-based multi-cell virtualized wireless network (VWN) to serve users belonging to ifferent service providers (slices) with the quality-of-service (QoS) requirements in terms of each slice's minimum reserved rate. In order to improve energy efficiency, we formulate a joint base station (BS) assignment, sub-carrier and power allocation problem to minimize the total transmit power of all the BSs subject to the QoS constraints. This problem is inherently a non-convex optimization problem. To tackle its computational complexity, we apply successive convex approximation (SCA) and complementary geometric programming (CGP) to convert the problem into a computationally efficient formulation and propose an iterative algorithm for solving the problem. We introduce a variable called user association factor (UAF) for jointly assigning users to both BSs and sub-carriers. Simulation results illustrate the performance enhancement of the VWN achieved through our formulation for different network scenarios.
Description: © 2015 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.
Version: Accepted for publication
DOI: 10.1109/ICUWB.2015.7324446
URI: https://dspace.lboro.ac.uk/2134/21343
Publisher Link: http://dx.doi.org/10.1109/ICUWB.2015.7324446
ISBN: 9781467365550
ISSN: 2162-6588
Appears in Collections:Conference Papers and Presentations (Mechanical, Electrical and Manufacturing Engineering)

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