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View Full Version : Question What is difference between UMTS 850 and 2100 (speed,signal,usage)


deknoi55
2014-03-27, 02:58 PM
Hi expert
could you explain me about What is difference between UMTS 850 and 2100 such as speed,signal,usage,path loss


thak you so much
Jerry
2014-03-27, 03:59 PM
Basically, footprint coverage by 850 will be better.
khurrambilal01
2014-03-27, 04:18 PM
U900/U850 has better coverage and more indoor penetration compared with U2100, Less number of sites required.

Normally for U900 you require 2 times lesser sites as compared to U2100, Throughput remains almost the same but you might face issues with RTWP on U900 because UEs will transmit with high power from far TP because of greater coverage area and hence will increase RTWP.
mrsammr
2014-03-27, 06:07 PM
one of the few issues that u900/u850 are the rtwp or interferences. In my country in several sites have had troubles and interference between u900 and the antenna TV of the building. We'll have to turn off u900 technology for the people of the building were be able to see TV.

Otherwise, u900 will be better than 1800/2100 without a doubt, for greater coverage are.
khurrambilal01
2014-03-27, 06:23 PM
one of the few issues that u900/u850 are the rtwp or interferences. In my country in several sites have had troubles and interference between u900 and the antenna TV of the building. We'll have to turn off u900 technology for the people of the building were be able to see TV.

Otherwise, u900 will be better than 1800/2100 without a doubt, for greater coverage are.

But my friend TV spectrum is separate and they are using other band for Transmission, U900 band is supposed to be used for Telecommunications (G900/U900) only. Did you check why these antennas use U900 frequencies?
mrsammr
2014-03-30, 08:41 PM
But my friend TV spectrum is separate and they are using other band for Transmission, U900 band is supposed to be used for Telecommunications (G900/U900) only. Did you check why these antennas use U900 frequencies?

In my country, the tv spectrum is lower than u900 frequencies, but there was interferences because when we turn off the u900 all the neighbourhood were be able to see the TV. When we turn on u900 all of them weren't be able to see TV. They weren't very happy about that...