Resource allocation in hybrid macro/femto networks

Chu, Xiaoli and Wu, Yuhua and Benmesbah, Lamia and Ling, Bingo Wing-Kuen (2010) Resource allocation in hybrid macro/femto networks. In: Second International Workshop on Planning and Optimization of Wireless Communication Networks , 18 - 21 April 2010, Sydney, Australia.

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Official URL: http://dx.doi.org/10.1109/WCNCW.2010.5487658

Abstract

Femtocell has been considered by the wireless
industry as a promising solution not only to improve indoor
coverage, but also to unload traffic from overburdened macrocell
networks. In hybrid macro/femto networks, macrocells may have
to share the same spectrum with femtocells, due to spectrum
availability and network infrastructure considerations, in spite of
potentially excessive interference caused by densely deployed
femtocells. In this paper, we propose a decentralized resource
allocation scheme for the orthogonal frequency division multiple
access (OFDMA) downlink of a shared-spectrum macro/femto
network, where each femtocell randomly selects a subset of
available OFDMA resources for transmission, in order to achieve
decentralized inter-cell interference avoidance. The performance
of the decentralized resource allocation scheme is evaluated by
simulations based on per-cell or network-wide performance
metrics. Simulation results provide insights on how the resource
allocation in a shared-spectrum hybrid macro/femto network
should take into account the spatial density of femtocells and
indoor/outdoor radio propagation channel conditions.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Femtocell has been considered by the wireless industry as a promising solution not only to improve indoor coverage, but also to unload traffic from overburdened macrocell networks. In hybrid macro/femto networks, macrocells may have to share the same spectrum with femtocells, due to spectrum availability and network infrastructure considerations, in spite of potentially excessive interference caused by densely deployed femtocells. In this paper, we propose a decentralized resource allocation scheme for the orthogonal frequency division multiple access (OFDMA) downlink of a shared-spectrum macro/femto network, where each femtocell randomly selects a subset of available OFDMA resources for transmission, in order to achieve decentralized inter-cell interference avoidance. The performance of the decentralized resource allocation scheme is evaluated by simulations based on per-cell or network-wide performance metrics. Simulation results provide insights on how the resource allocation in a shared-spectrum hybrid macro/femto network should take into account the spatial density of femtocells and indoor/outdoor radio propagation channel conditions.
Keywords:Femtocell, macrocell, OFDMA, resource block, outage probability, areal spectral efficiency
Subjects:H Engineering > H640 Communications Engineering
Divisions:College of Science > School of Engineering
ID Code:2719
Deposited By: Rosaline Smith
Deposited On:24 Jun 2010 20:02
Last Modified:18 Jul 2011 16:26

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