Radio resource management techniques for multi-tier cellular wireless networks

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2015-03, 2014-06, 2014-03, 2015-12, 2015-12, 2014-12, 2013-06, 2013-06
Abdelnasser, Amr Adel Nasr
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Journal ISSN
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IEEE Transactions on Mobile Computing
IEEE Transactions on Communications
IEEE Wireless Communications
IEEE Transactions on Wireless Communications
IEEE Globecom'15
IEEE Globecom'15
IEEE Globecom'14
There is a prolific increase in the penetration of user devices such as smartphones and tablets. In addition, user expectations for higher Quality of Service (QoS), enhanced data rates and lower latencies are relentless. In this context, network densification through the dense deployment of small cell networks, underlaying the currently existing macrocell networks, is the most appealing approach to handle the aforementioned requirements. Small cell networks are capable of reusing the spectrum locally and providing most of the capacity while macrocell networks provide a blanket coverage for mobile user equipment (UEs). However, such setup imposes a lot of issues, among which, co-tier and cross-tier interference are the most challenging. To handle co-tier interference, I have proposed a semi-distributed (hierarchical) interference management scheme based on joint clustering and resource allocation (RA) for small cells. I have formulated the problem as a Mixed Integer Non-Linear Program (MINLP), whose solution was obtained by dividing the problem into two sub-problems, where the related tasks were shared between the Femto Gateway (FGW) and small cells. As for cross-tier interference, I have formulated RA problems for both the macrocell and small cells as optimization problems. In particular, I have introduced the idea of ``Tier-Awareness'' and studied the impact of the different RA policies in the macrocell tier on the small cells performance. I have shown that the RA policy in one tier should be carefully selected. In addition, I have formulated the RA problem for small cells as an optimization problem with an objective function that accounts for both RA and admission control (AC). Finally, I have studied cloud radio access network (C-RAN) of small cells which has been considered as a typical realization of a mobile network which is capable of supporting soft and green technologies in Fifth Generation (5G) networks, as well as a platform for the practical implementation of network multiple-input multiple-output (MIMO) and coordinated multi-point (CoMP) transmission concepts.
Resource allocation, OFDMA, Convex optimization, Densification, HetNets, Small cells, C-RAN, Admission control, 5G networks, Wireless, Cellular
A. Abdelnasser and E. Hossain, "Resource allocation for an OFDMA cloud-RAN of small cells underlaying a macrocell," IEEE Transactions on Mobile Computing, to appear.
A. Abdelnasser, E. Hossain, and D. I. Kim, "Tier-aware resource allocation in OFDMA macrocell-small cell networks," IEEE Transactions on Communications, vol. 63, no. 3, March 2015, pp. 695-710.
E. Hossain, M. Rasti, H. Tabassum, and A. Abdelnasser, "Evolution toward 5G multi-tier cellular wireless networks: an interference management perspective," IEEE Wireless Communications, vol. 21, no. 3, pp. 118-127, 2014.
A. Abdelnasser, E. Hossain, and D. I. Kim, "Clustering and resource allocation for dense femtocells in a two-tier cellular OFDMA network," IEEE Transactions on Wireless Communications, vol. 13, Mar. 2014, pp. 1628-1640.
A. Abdelnasser and E. Hossain, "On resource allocation for downlink power minimization in OFDMA small cells in a cloud-RAN," to be presented in IEEE Globecom'15, San Diego, CA, USA, 6-10 December, 2015.
A. Abdelnasser and E. Hossain, "Two-tier OFDMA cellular cloud-RAN: Joint resource allocation and admission control," to be presented in IEEE Globecom'15, San Diego, CA, USA, 6-10 December, 2015.
A. Abdelnasser and E. Hossain, "Joint resource allocation and admission control in OFDMA-based multi-tier cellular networks," in Proc. IEEE Globecom'14, Austin, TX, USA, 8-12 December, 2014.
A. Abdelnasser and E. Hossain, "Joint subchannel and power allocation in two-tier OFDMA HetNets with clustered femtocells," in Proc. IEEE ICC'13, Budapest, Hungary, 9-13 June 2013.
A. Abdelnasser and E. Hossain, "Subchannel and power allocation schemes for clustered femtocells in two-tier OFDMA HetNets," in IEEE ICC'13 2nd International Workshop on Small Cell Wireless Networks (SmallNets), Budapest, Hungary, 9 June 2013.