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16 - Self-organization and interference avoidance for LTE femtocells

Published online by Cambridge University Press:  05 May 2013

David López-Pérez
Kings College
Guillaume de la Roche
Mindspeed Technologies Inc.
Tony Q. S. Quek
Singapore University of Technology and Design
Guillaume de la Roche
Mindspeed Technologies
İsmail Güvenç
Florida International University
Marios Kountouris
SUPÉLEC (Ecole Supérieure d'Electricité)
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Femtocell access points (FAPs) are foreseen to play a key role in the development and deployment of future orthogonal frequency division multiple access (OFDMA)-based cellular networks, e.g., Long Term Evolution (LTE) [1] and Wireless Interoperability for Microwave Access (WiMAX) [2], since they may deliver improved indoor coverage and network capacity [3]. Femtocell access points are low-cost, low-power, user-deployed small base stations (BSs), which provide wireless coverage of a cellular standard, and are connected to the network operator via a broadband connection, e.g., digital subscriber line (DSL), fiber optics, etc. Femtocells, as explained in the introductory chapter, offer a large number of advantages to future cellular networks. They may enhance indoor coverage, deliver both high data rates and new applications to users, and offload traffic from existing macrocell networks [4]. However, since FAPs are expected to be deployed in large numbers and because they may be installed by users in an uncoordinated manner, including self-organizing network (SON) capabilities in FAPs may be a key aspect for their successful operation of these devices [5].

A SON, defined as a network that requires minimal human involvement due to the automatic and/or autonomous nature of its functioning, integrates the processes of planning, configuration, optimization, and healing in a set of in-built automatic/autonomous functionalities. By using SON capabilities, operator intervention for network operation and maintenance can be reduced, thus minimizing deployment and operational costs of future cellular networks, which are major concerns of current mobile operators.

Small Cell Networks
Deployment, PHY Techniques, and Resource Management
, pp. 383 - 411
Publisher: Cambridge University Press
Print publication year: 2013

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