Joint rate control and power allocation for low-latency reliable D2D-based relay network

Wang, Y. and He, Y. and Xu, C. and Zhou, Z. and Mumtaz, S. and Rodriguez, J. and Pervaiz, H. (2019) Joint rate control and power allocation for low-latency reliable D2D-based relay network. EURASIP Journal on Wireless Communications and Networking, 2019 (1). ISSN 1687-1472

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Abstract

Emerging 5G applications impose stringent requirements on network latency and reliability. In this work, we propose a low-latency reliable device-to-device (D2D) relay network framework to improve the cell coverage and user satisfaction. Particularly, we develop a cross-layer low-complexity resource allocation algorithm, which jointly optimizes the rate control and power allocation from a long-term perspective. The long-term optimization problem is transformed into a series of short-term subproblems by using Lyapunov optimization, and the objective function is separated into two independent subproblems related to rate control in network layer and power allocation in physical layer. Next, the Karush-Kuhn-Tucher (KKT) conditions and alternating direction method of multipliers (ADMM) algorithm are employed to solve the rate control subproblem and power allocation subproblem, respectively. Finally, simulation results demonstrate that the proposed algorithm can reach 99.9% of the optimal satisfaction of D2D pairs with lower average network delay compared to the baseline algorithm. Furthermore, the convergence time of the ADMM-based power allocation algorithm is only about 1.7% of that by using the CVX toolbox. © 2019, The Author(s).

Item Type:
Journal Article
Journal or Publication Title:
EURASIP Journal on Wireless Communications and Networking
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1700/1706
Subjects:
ID Code:
133796
Deposited By:
Deposited On:
16 May 2019 10:50
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Dec 2020 07:00