[analysys mason] UMTS900 is attracting significant interest from mobile operators, primarily because of the coverage advantages inherent in deploying UMTS at 900MHz compared with 2100MHz. All other things being equal, the lower the frequency, the further a radio signal propagates, which means that UMTS900 offers a significant improvement over UMTS2100 for cell range and coverage. This translates into fewer sites and cost savings for both network build and opex, as well as faster network roll-out. These benefits enable operators to roll out 3G services to rural areas that might otherwise be uneconomical to serve using UMTS2100, or, for GSM-only operators, to reduce the costs of building a new 3G network. Other benefits include potential improvements in indoor coverage and better voice quality compared with GSM.
The ecosystem for UMTS900 is rapidly maturing. The technology is proven not just in field trials but also in a number of operational networks worldwide, and network equipment and crucially devices are in ready supply. However, the pace of implementation of UMTS900 has been held back, particularly in Europe, by delays in removing technology restrictions from the 900MHz band. While the regulatory situation is improving, any significant delays in liberalising 900MHz spectrum will make it increasingly likely that operators will opt for alternative solutions for rural coverage, or even introduce LTE rather than UMTS in 900MHz spectrum once refarming is permitted.
Prospects for UMTS900: status review and outlook
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The largest UMTS900 network just got up in Estonia this week with Tartumaa being the first county to receive full 3.5G coverage by Elisa.
First commercial UMTS900 network in the world was launched in Finland in the end of 2007, also by Elisa.
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