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900MHz Spectrum Refarming Analysis for UMTS900 Deployment

900MHz Spectrum Refarming Analysis for UMTS900 Deployment
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Author(s): Chitra Singh Budhathoki Magar (ZTE India, India)
Copyright: 2014
Pages: 21
Source title: Security, Privacy, Trust, and Resource Management in Mobile and Wireless Communications
Source Author(s)/Editor(s): Danda B. Rawat (Georgia Southern University, USA), Bhed B. Bista (Iwate Prefectural University, Japan) and Gongjun Yan (University of Southern Indiana, USA)
DOI: 10.4018/978-1-4666-4691-9.ch020


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Refarming means re-arrangement of the traditionally allotted spectrum for a technology/application/service and carving out a part of the spectrum for technology/application/service with higher value. The refarming concept can be used for 3G network deployment in 2G bands or for 4G network deployment in 2G/3G bands. Relative to the UMTS core band (2100MHz), in the 900MHz band radio signal propagation loss is lower. Fewer base stations can be deployed in 900MHz band to achieve the same coverage. Especially in the rural areas, villages, etc., covering limited areas, the UMTS900 band coverage advantages are more obvious. The lower carrier frequency penetration capability becomes much stronger. It reduces the loss while penetrating the wall. This chapter aims to focus on the global UMTS900 refarming status, key advantages of UMTS900 refarming, major challenges of transitioning to UMTS900, technical feasibility of GSM/UMTS co-existence band, and UMTS900 frequency refarming case study in sandwich mode. ECC interference analysis and simulation results are provided for study on co-existence of GSM900 and UMTS900. In the later part of the chapter a detailed case study on 900MHz refarming on sandwich mode is provided with system simulation, frequency planning, capacity migration, and deployment strategy.

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