University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Dynamic Femtocell Resource Allocation for Managing Inter-Tier Interference in Downlink of Heterogeneous Networks

Saeed, A, Katranaras, E, Dianati, M and Imran, MA (2016) Dynamic Femtocell Resource Allocation for Managing Inter-Tier Interference in Downlink of Heterogeneous Networks IET Communications, 10 (6). pp. 641-650.

[img]
Preview
Text
Revised_COM-2015-0153.pdf - Accepted version Manuscript
Available under License : See the attached licence file.

Download (457kB) | Preview
[img]
Preview
PDF (licence)
SRI_deposit_agreement.pdf
Available under License : See the attached licence file.

Download (33kB) | Preview

Abstract

This study investigates the downlink resource allocation problem in orthogonal frequency division multiple access heterogeneous networks consisting of macrocells and femtocells sharing the same frequency band. The focus is to devise optimised policies for femtocells' access to the shared spectrum, in terms of femtocell transmissions, in order to maximise femto-users (FUEs) sum data rate while ensuring that certain level of quality of service (QoS) for the macro-cell users in the vicinity of femtocells is provided. The optimal solution to this problem is obtained by employing the well-known dual Lagrangian method and the optimal femtocell transmit power and resource allocation solution is derived in detail. However, the optimal solution introduces high computational complexity. To this end, a heuristic solution to the problem is proposed. The algorithms to implement both optimal and efficient suboptimal schemes in a practical system are also given in detail while their complexity is compared. Simulation results show that proposed dynamic resource allocation scheme (a) ensures the macro-users QoS requirements compared with the Reuse-1 scheme, where femtocells are allowed to transmit at full power and bandwidth; (b) can maintain FUE data rates at high levels; (c) provides performance close to the optimal solution, while introducing much lower complexity.

Item Type: Article
Subjects : Electronic Engineering
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering
Authors :
AuthorsEmailORCID
Saeed, AUNSPECIFIEDUNSPECIFIED
Katranaras, EUNSPECIFIEDUNSPECIFIED
Dianati, MUNSPECIFIEDUNSPECIFIED
Imran, MAUNSPECIFIEDUNSPECIFIED
Date : 14 April 2016
Identification Number : 10.1049/iet-com.2015.0153
Copyright Disclaimer : This paper is a postprint of a paper submitted to and accepted for publication in IET Communications and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library
Uncontrolled Keywords : Heterogeneous Networks, Femtocells, Inter-cell Interference, Resource Allocation, Binary Integer Linear Programming, Dual Lagrangian Problem
Depositing User : Symplectic Elements
Date Deposited : 12 Jul 2016 11:45
Last Modified : 12 Jul 2016 11:45
URI: http://epubs.surrey.ac.uk/id/eprint/811177

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year


Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800