Impact of the change of the propagation coefficient at the break point on fixed channel assignment for GSM networks

T. M.J. Van Berkel, M. H.A.J. Herben, R. Chávez-Santiago, V. Lyandres

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The fixed channel assignment problem in GSM networks has been commonly modelled as a constraint satisfaction problem with binary channel separation constraints (graph-colouring model). However, it has been observed that heuristics using direct estimations of carrier-to-interference ratio (CIR) have several advantages over those using binary constraints, being the economisation of spectrum the most important one. This is due to the fact that CIR constraints provide the possibility of taking more accurately into account different propagation phenomena that directly impact the channel assignment plans. In this paper, we present further improvement to an existing CIR-constraint heuristic algorithm for fixed channel assignment. We demonstrate that accounting for the change of the propagation coefficient at the break point in line-of-sight conditions (commonly seen in urban environments with rectangular grid street plans) might further economise spectrum. Results of practical examples are included.

Original languageEnglish
Title of host publication2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
DOIs
StatePublished - 1 Dec 2006
Event2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC - Helsinki, Finland
Duration: 11 Sep 200614 Sep 2006

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Conference

Conference2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Country/TerritoryFinland
CityHelsinki
Period11/09/0614/09/06

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