biz - the longest range I've ever heard CDMA calls being placed is 130km (see below) in a test environment over water. The Aussie infrastructure guys were given the OK to increase power on their end so the handset could remain mainstream.....this was a special provision to Australia where they were replacing an AMPS network with customers that had been using 3W bag phones or AMPS phones connected to amplifiers built into their vehicles. The goal was to keep the number of cell sites approx the same....but in the end they did add more.
In real world environments using standard products your range may be up to about 10km. As to your specific question about Reliance's coverage circles....I don't know what their network planning guys are counting on.....it will vary dependent upon different factors
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All The Way With CDMA: Telstra Announces Test Results
May 20, 1999 -- Telstra announced today results of recent testing on its new mobile phone network, CDMA (Code Division Multiple Access), using its Extended Coverage features.
The Extended Coverage enhancements delivered by Nortel's CDMA Boomer Cell, extended coverage over long distances from the base station.
This was achieved using handheld phones in standard car kits without the need for boosters. The coverage compared favourably with a boosted analogue phone.
Telstra's Managing Director, Mobiles, Mr Jonathan Marchbank, said recent testing at Mt Dowe and Peak Alone demonstrated that CDMA was capable of more than adequately meeting the requirements of regional and rural customers currently relying on the analogue network for extended coverage.
"Telstra is the only carrier building a national CDMA network, and we are committed to ensuring that the network's coverage and performance is of an extremely high standard and our ongoing testing is proof of this,"he said.
"CDMA is achieving coverage performance at distances that are just not available from other land based digital technologies," he said.
"Field testing of the Extended Coverage enhancement took place recently in two locations in New South Wales, one in a remote rural location and the second in a marine environment.
"The results have been outstanding and we are confident that our customers will welcome the coverage and high voice quality CDMA will provide," Mr Marchbank said.
The first test was conducted from a CDMA base station situated on Mt Dowe, a mountain top located 1500 metres above sea level in the Kaputar National Park, Northern New South Wales.
Testing in this rural environment was conducted using vehicles equipped with both analogue and CDMA handsets. This was to compare the network coverage and voice quality of both networks over very long distances from Mt Dowe.
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The tests conducted from Mt Dowe achieved coverage at distances up to 120 km from the base station. The test demonstrated that coverage and voice quality of CDMA compared favourably with that of analogue in this area.
Testing was also conducted in a marine environment in Southern New South Wales, from a base station located on Peak Alone, another mountain top site 1000 metres above sea level, around 25 km inland from Narooma on the NSW coast.
Testing took place on a boat off the coast of Ulladulla, over a range of distances using a standard car kit, without any booster.
CDMA calls were achieved at distances in excess of 130 km from the base station.
In a graphic demonstration of the performance of CDMA, handheld calls were made in both the rural and marine test on a CDMA handheld at distances in excess of 100 km from the base station.
"Telstra is obviously delighted with the results as we believe our customers will be," Mr Marchbank said.
"During the testing CDMA maintained excellent voice quality, and with its background noise suppression, CDMA will be particularly useful in a marine environment to help suppress the noise from engines, wind and waves at sea" Mr Marchbank said.
CDMA will provide customers with a high quality replacement network with not only comparable coverage to the existing analogue network, but also additional features not currently available on that network, including security to protect against voice eavesdropping, calling number display (CND) and in the future, text messaging and data and facsimile transmission.
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