Authors:
D. Duarte
1
;
A. Martins
2
;
P. Vieira
3
and
A. Rodrigues
4
Affiliations:
1
Instituto de Telecomunicações (IT), Portugal
;
2
Instituto de Telecomunicações (IT), CELFINET and Consultoria em Telecomunicações Lda., Portugal
;
3
Instituto de Telecomunicações (IT) and Instituto Superior de Engenharia de Lisboa (ISEL), Portugal
;
4
Instituto de Telecomunicações (IT) and Instituto Superior Técnico (IT), Portugal
Keyword(s):
Self-Organizing Networks, Neighbor Cell List, Optimization, Radio Frequency Measurement, Handover Statistics.
Related
Ontology
Subjects/Areas/Topics:
Performance Analysis of Wireless Networks
;
Telecommunications
;
Wireless and Mobile Technologies
;
Wireless Information Networks and Systems
Abstract:
With the increasing complexity of current wireless networks, it became evident the need for Self-Organizing
Networks (SON), which aims to automate most of the associated radio planning and optimization tasks. Within
SON, this paper aims to optimize the Neighbor Cell List (NCL) for radio network cells. An algorithm composed
by three decision criteria was developed: geographic localization and orientation, according network
topology, Radio Frequency (RF) measurements collected by drive-tests or traces and Performance Management
(PM) counters from Handover (HO) statistics. The first decision, proposes a new NCL taking into
account the Base Station (BS) location and interference tiers, based on the quadrant method. The last two
decision criteria consider signal strength and interference level measurements and HO statistics in a time period,
respectively. They also define a priority to each cell and added, kept or removed neighbor relation,
based on user defined constraints. The algorithm
s were developed and implemented over new radio network
optimization professional tool. Several case studies were produced using real data from a mobile operator.
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