rmwambu
2012-04-16, 04:19 PM
UMTS NodeB macro networks often consist of hundreds, or at most a few thousand, NodeB macrocell, microcellular, and picocell base stations covering a typical market. They are totally planned—that is, the location and coverage footprint of each NodeB has been carefully selected, analyzed, and optimized in the context of all the other NodeB units that surround it. The network design remains basically static. UMTS femtocells on the other hand, while they may be owned by an individual, operate in a licensed spectrum owned by a cellular/PCS operator often using the same frequency channel as the macro network, and are part of the operator’s overall network. There could be hundreds of thousands of femtocells randomly located throughout the overall macro network deployment and potentially on the same channel with the macrocell network. Each day, hundreds of femtocells may be added, removed, or moved to different locations. The addition of each HNB femtocell potentially changes the dynamics of the network design. READ FURTHER AT: http://trends-in-telecoms.blogspot.com/2011/06/femtocells-in-umts-interference-dilemma.html