Having been talked of for some years, RAN sharing is again on the radar. The driver is reducing the total cost of ownership (TCO) presently impacting operators--especially with declining voice ARPUs. This is also the case with investments in emerging markets where infrastructure costs can be high while there is limited ARPU associated with these customers. Between equals, network sharing can be a win-win strategy, but must be done in such a way that regulators do not perceive competition is altered.
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