Hybrid radio resource allocation and interference coordination for type 1a-relayed long term evolution uplink
Author | Ahmed, Irfan |
Author | Mohamed, Amr |
Available date | 2016-04-21T14:44:37Z |
Publication Date | 2014-07 |
Publication Name | IET Communications |
Resource | Scopus |
Citation | I. Ahmed and A. Mohamed, "Hybrid radio resource allocation and interference coordination for type 1a-relayed long term evolution uplink," in IET Communications, vol. 8, no. 11, pp. 1928-1937, July 24 2014. |
ISSN | 1751-8628 |
Abstract | Relay technology has been included in long term evolution (LTE) cellular system through 3GPP Release 10. Relay-based LTE cellular system is one of the most promising technologies to enhance the throughput and coverage of access network. Deployment of relays in a cell opens many issues of frequency/time domain radio resource allocation and frequency planning. In this study, the authors consider the uplink of LTE relay-assisted network and formulate the joint scheduling and intra-cell interference mitigation as a non-linear optimisation problem. They take into account the projection of the gradient of user's utility function over the user's rate vector based on Lagrangian method. They propose a novel transformation of scheduling problem into combinatorial Knapsack optimisation to convert the optimisation problem into binary integer nonlinear program. Finally, they present an alternate solution through a low complexity algorithm to allocate resources based on group of resource blocks, whereas considering the contiguity constraint. Simulation results show that the proposed scheme is near optimal with a much lower complexity order. |
Sponsor | Taif University Grant no. 2503-434-1. NPRP project no. 5-782-2-322 from the Qatar National Research Fund (a member of Qatar Foundation). |
Language | en |
Publisher | Institution of Engineering and Technology |
Subject | Cellular arrays Cellular telephone systems Complex networks Computational complexity Integer programming Interference suppression Lagrange multipliers Mathematical transformations Mobile security Mobile telecommunication systems Nonlinear programming Optimization Resource allocation Scheduling Wireless telecommunication systems Interference co-ordination Intra-cell interference Lagrangian methods Low complexity algorithm Non-linear optimisation Optimisation problems Radio resource allocation Scheduling problem Long Term Evolution (LTE) |
Type | Article |
Pagination | 1928-1937 |
Issue Number | 11 |
Volume Number | 8 |
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