Distributed Energy Efficient Resource Allocation for OFDMA Smallcell Networks

Guodong ZHANG; Shibing ZHANG; Zhihua BAO

doi:10.1587/transcom.2017EBP3425

Distributed Energy Efficient Resource Allocation for OFDMA Smallcell Networks

Guodong ZHANG, Shibing ZHANG, Zhihua BAO

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Smallcells have recently emerged as a potential approach for local area deployments that can satisfy high data rate requirements, reduce energy consumption and enhance network coverage. In this paper, we work on maximizing the weighted sum energy efficiency (WS-EE) for densely deployed smallcell networks. Due to the combinatorial and the general fractional program nature of the resource allocation problem, WS-EE maximization is non-convex and the optimal joint resource blocks (RBs) and power allocation is NP-hard. To solve this complex problem, we propose to decompose the primal problem into two subproblems (referred as RBs allocation and power control) and solve the subproblems sequentially. For the RBs allocation subproblem given any feasible network power profile, the optimal solution can be solved by maximizing throughput locally. For the power control subproblem, we propose to solve it locally based on a new defined pricing factor. Then, a distributed power control algorithm with guaranteed convergence is designed to achieve a Karush-Kuhn-Tucker (KKT) point of the primal problem. Simulation results verify the performance improvement of our proposed resource allocation scheme in terms of WS-EE. Besides, the performance evaluation shows the tradeoff between the WS-EE and the sum rate of the smallcell networks.

Publication: IEICE TRANSACTIONS on Communications Vol.E101-B No.11 pp.2362-2370

Publication Date: 2018/11/01

Publicized: 2018/04/27

Online ISSN: 1745-1345

DOI: 10.1587/transcom.2017EBP3425

Type of Manuscript: PAPER

Category: Terrestrial Wireless Communication/Broadcasting Technologies

Authors

Guodong ZHANG
  Nantong University
Shibing ZHANG
  Nantong University
Zhihua BAO
  Nantong University

Keyword

pricing, WS-EE, smallcells, power control, RBs allocation

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Guodong ZHANG, Shibing ZHANG, Zhihua BAO, "Distributed Energy Efficient Resource Allocation for OFDMA Smallcell Networks" in IEICE TRANSACTIONS on Communications, vol. E101-B, no. 11, pp. 2362-2370, November 2018, doi: 10.1587/transcom.2017EBP3425.
Abstract: Smallcells have recently emerged as a potential approach for local area deployments that can satisfy high data rate requirements, reduce energy consumption and enhance network coverage. In this paper, we work on maximizing the weighted sum energy efficiency (WS-EE) for densely deployed smallcell networks. Due to the combinatorial and the general fractional program nature of the resource allocation problem, WS-EE maximization is non-convex and the optimal joint resource blocks (RBs) and power allocation is NP-hard. To solve this complex problem, we propose to decompose the primal problem into two subproblems (referred as RBs allocation and power control) and solve the subproblems sequentially. For the RBs allocation subproblem given any feasible network power profile, the optimal solution can be solved by maximizing throughput locally. For the power control subproblem, we propose to solve it locally based on a new defined pricing factor. Then, a distributed power control algorithm with guaranteed convergence is designed to achieve a Karush-Kuhn-Tucker (KKT) point of the primal problem. Simulation results verify the performance improvement of our proposed resource allocation scheme in terms of WS-EE. Besides, the performance evaluation shows the tradeoff between the WS-EE and the sum rate of the smallcell networks.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2017EBP3425/_p

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@ARTICLE{e101-b_11_2362,
author={Guodong ZHANG, Shibing ZHANG, Zhihua BAO, },
journal={IEICE TRANSACTIONS on Communications},
title={Distributed Energy Efficient Resource Allocation for OFDMA Smallcell Networks},
year={2018},
volume={E101-B},
number={11},
pages={2362-2370},
abstract={Smallcells have recently emerged as a potential approach for local area deployments that can satisfy high data rate requirements, reduce energy consumption and enhance network coverage. In this paper, we work on maximizing the weighted sum energy efficiency (WS-EE) for densely deployed smallcell networks. Due to the combinatorial and the general fractional program nature of the resource allocation problem, WS-EE maximization is non-convex and the optimal joint resource blocks (RBs) and power allocation is NP-hard. To solve this complex problem, we propose to decompose the primal problem into two subproblems (referred as RBs allocation and power control) and solve the subproblems sequentially. For the RBs allocation subproblem given any feasible network power profile, the optimal solution can be solved by maximizing throughput locally. For the power control subproblem, we propose to solve it locally based on a new defined pricing factor. Then, a distributed power control algorithm with guaranteed convergence is designed to achieve a Karush-Kuhn-Tucker (KKT) point of the primal problem. Simulation results verify the performance improvement of our proposed resource allocation scheme in terms of WS-EE. Besides, the performance evaluation shows the tradeoff between the WS-EE and the sum rate of the smallcell networks.},
keywords={},
doi={10.1587/transcom.2017EBP3425},
ISSN={1745-1345},
month={November},}

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TY - JOUR
TI - Distributed Energy Efficient Resource Allocation for OFDMA Smallcell Networks
T2 - IEICE TRANSACTIONS on Communications
SP - 2362
EP - 2370
AU - Guodong ZHANG
AU - Shibing ZHANG
AU - Zhihua BAO
PY - 2018
DO - 10.1587/transcom.2017EBP3425
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E101-B
IS - 11
JA - IEICE TRANSACTIONS on Communications
Y1 - November 2018
AB - Smallcells have recently emerged as a potential approach for local area deployments that can satisfy high data rate requirements, reduce energy consumption and enhance network coverage. In this paper, we work on maximizing the weighted sum energy efficiency (WS-EE) for densely deployed smallcell networks. Due to the combinatorial and the general fractional program nature of the resource allocation problem, WS-EE maximization is non-convex and the optimal joint resource blocks (RBs) and power allocation is NP-hard. To solve this complex problem, we propose to decompose the primal problem into two subproblems (referred as RBs allocation and power control) and solve the subproblems sequentially. For the RBs allocation subproblem given any feasible network power profile, the optimal solution can be solved by maximizing throughput locally. For the power control subproblem, we propose to solve it locally based on a new defined pricing factor. Then, a distributed power control algorithm with guaranteed convergence is designed to achieve a Karush-Kuhn-Tucker (KKT) point of the primal problem. Simulation results verify the performance improvement of our proposed resource allocation scheme in terms of WS-EE. Besides, the performance evaluation shows the tradeoff between the WS-EE and the sum rate of the smallcell networks.
ER -