Sunday 14 July 2013

Interference in 3G Hetnets in case of shared carrier

We had a discussion earlier on 'dedicated v/s shared' carrier here. This post is just re-iterating the fact that while in case of LTE, there are advanced techniques like eICIC to manage interference (see 3G4G blog here), in case of 3G there are no standard techniques to manage the interference in case of shared carrier.

A recent presentation from ZTE in one of the conferences explains this point further that has been reproduced below for reference:

While I think SON can help in certain situations in case of 3G, the chances of coverage black holes are very high which can lead to radio link failures in ongoing calls. As such, the operator has to be absolutely sure where a small cell will be placed in a shared carrier situation for sake of maintaining a good macro coverage. 

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