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Coordinated Scheduling and Power Control in Cloud-Radio Access Networks

Douik, Ahmed and Dahrouj, Hayssam and Al-Naffouri, Tareq Y. and Alouini, Mohamed-Slim (2016) Coordinated Scheduling and Power Control in Cloud-Radio Access Networks. IEEE Transactions on Wireless Communications, 15 (4). pp. 2523-2536. ISSN 1536-1276. doi:10.1109/TWC.2015.2504524.

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This paper addresses the joint coordinated scheduling and power control problem in cloud-enabled networks. Consider the downlink of a cloud-radio access network (CRAN), where the cloud is only responsible for the scheduling policy, power control, and synchronization of the transmit frames across the single-antenna base-stations (BS). The transmit frame consists of several time/frequency blocks, called power-zones (PZs). The paper considers the problem of scheduling users to PZs and determining their power levels (PLs), by maximizing the weighted sum-rate under the practical constraints that each user cannot be served by more than one base-station, but can be served by one or more power-zones within each base-station frame. The paper solves the problem using a graph theoretical approach by introducing the joint scheduling and power control graph formed by several clusters, where each is formed by a set of vertices, representing the possible association of users, BSs, and PLs for one specific PZ. The problem is, then, formulated as a maximum-weight clique problem, in which the weight of each vertex is the sum of the benefits of the individual associations belonging to that vertex. Simulation results suggest that the proposed cross-layer scheme provides appreciable performance improvement as compared to schemes from recent literature.

Item Type:Article
Related URLs:
URLURL TypeDescription
Douik, Ahmed0000-0001-7791-9443
Dahrouj, Hayssam0000-0002-0737-6372
Al-Naffouri, Tareq Y.0000-0001-6955-4720
Alouini, Mohamed-Slim0000-0003-4827-1793
Additional Information:© 2015 IEEE. Manuscript received April 14, 2015; revised October 2, 2015; accepted November 16, 2015. Date of publication December 1, 2015; date of current version April 7, 2016. The work of H. Dahrouj was supported by Effat University in Jeddah, Saudi Arabia, through the Research and Consultancy Institute. The work of T. Y. Al-Naffouri was supported by KAUST project no. EE002355 at the Research Institute, King Fahd University of Petroleum and Minerals. The work of M.-S. Alouini was supported by the Qatar National Research Fund (a member of Qatar Foundation) under NPRP Grant NPRP 5-250-2-087. The statements made herein are solely the responsibility of the authors. Part of this paper was presented at the IEEE International Conference on Communication, London, U.K., June 2015 [1]. The associate editor coordinating the review of this paper and approving it for publication was W. Gerstacker. Hayssam Dahrouj would like to thank Effat University in Jeddah, Saudi Arabia, for funding the research reported in this paper through the Research and Consultancy Institute.
Funding AgencyGrant Number
Effat UniversityUNSPECIFIED
King Abdullah University of Science and Technology (KAUST)EE002355
Qatar National Research FundNPRP 5-250-2-087
Subject Keywords:Coordinated scheduling, power control, maximum-weight clique, joint scheduling and power control graph
Issue or Number:4
Record Number:CaltechAUTHORS:20160412-082753573
Persistent URL:
Official Citation:A. Douik, H. Dahrouj, T. Y. Al-Naffouri and M. S. Alouini, "Coordinated Scheduling and Power Control in Cloud-Radio Access Networks," in IEEE Transactions on Wireless Communications, vol. 15, no. 4, pp. 2523-2536, April 2016. doi: 10.1109/TWC.2015.2504524
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:66070
Deposited By: Tony Diaz
Deposited On:12 Apr 2016 23:00
Last Modified:10 Nov 2021 23:53

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