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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting -- Ignore unavailable to you. Want to Upgrade?

To: voop who wrote (11345)	6/5/2001 10:21:35 PM
From: arun gera	Read Replies (2) \| Respond to of 197443

Mobiles jammed as MTNL, BSNL begin WLL trial Vivek Law MUMBAI TOP cell operators in India are facing interference in their mobile signals from radio frequencies emanating out of an adjacent frequency band from where MTNL and BSNL are undertaking trials for the CDMA-based wireless-in-local-loop service. Operators which have been badly hit include Hutchison Max’s Orange in Mumbai, Fascel in Gujarat, Tata Cellular in Andhra Pradesh and BPL in Maharashtra. These operators have already taken up the issue with the Wireless Planning Commission and the Telecom Regulatory Authority of India but no solution has been found to the problem, which if not addressed soon, could seriously affect operations of some of the leading cellular operators and hurt subscribers. At this point, the two fixed service providers are only testing their services, but once they launch full fledged WiLL services, the interference could get worse. A high-level meeting was held earlier this month, which was attended by senior officials from the WPC and TRAI apart from cellular industry representatives. The telecom equipment vendors for BSNL were also present. It was decided that independent joint tests would be carried out by the Telecom Engineering Centre and the future course of action would then be decided. These tests were to have been carried out within a week, but sources said that they had still not been carried out. According to cellular industry sources, the WLL trials are being carried out on the frequency bands 824-844 Mhz and 869-889 Mhz (uplink and downlink, respectively), which have been allocated for CDMA based mobile telephony. The GSM bands on the other hand operate on the 890-915 Mhz and 935-960 Mhz frequency bands. In several cases, it has been found that despite transmitting signals within the frequency band applicable to them, the signals on the CDMA-based frequency bands have moved over to the frequency bands being used by the GSM operators. The CDMA signals being stronger have affected the operations of GSM services. The affect has been more on the cellular operators who have been allocated frequencies adjacent to the 889 Mhz band slot ie. from 890-896.2 Mhz (each operator has been given 6.2 Mhz frequency)