![]() ![]() ![]() frequency division duplex) is interesting: More about the different types of network sharing here.Īnd here are the LTE frequency bands used by the different network operators, the mix of TD-LTE and FDD-LTE (time vs. That doesn’t necessarily mean there are 5 physical UMTS and 4 physical LTE networks deployed, as single physical base station can be used by several network operators sharing transmission and processing hardware while using independent RF transceivers in front of a single antenna. All UMTS and LTE networks have their own Master Information Blocks (MIBs) and System Information Block 1’s (SIBs) so each network uses dedicated spectrum. When taking a closer look at the 5 UMTS networks and 4 LTE networks, however, I could observe that this is not the case. The screenshot on the left shows a total of 8 networks! Before taking a closer look I thought that a lot of them must just be MVNOs (Mobile VIRTUAL Network Operators) sharing a single carrier frequency with other MVNOs and the physical network operator itself. Over the weekend I had a closer look at the system parameters of some of the networks and was quite surprised that I didn’t quite find what I expected. I’ve been in Bangalore for a week recently and was quite surprised about the huge number of networks shown when performing a manual network search. ![]()
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