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In telecommunications, a femtocell—originally known as an Access Point Base Station—is a small cellular base station, typically designed for use in residential or small business environments. It connects to the service provider’s network via broadband (such as DSL or cable); current designs typically support 2 to 4 active mobile phones in a residential setting. A femtocell allows service providers to extend service coverage indoors, especially where access would otherwise be limited or unavailable. The femtocell incorporates the functionality of a typical base station but extends it to allow a simpler, self contained deployment; an example is a UMTS femtocell containing a Node B, RNC and GPRS Support Node (SGSN) with Ethernet for backhaul. Although much attention is focussed on UMTS, the concept is applicable to all standards, including GSM, CDMA2000, TD-SCDMA and WiMAX solutions
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2.1 Interference 8 }# L; T% v7 k t' n
2.2 Spectrum * }, n. z* j6 ?( [0 i! b X
2.3 Access control 4 |" p) u h5 |6 b: u
2.4 Lawful interception , c3 n; @9 q; e( c$ U4 p
2.5 Equipment location 7 B# T+ j) b; M, ?
2.6 Network integration
* J7 A) R, T! d/ O- m: i0 o/ {2.7 Emergency calls
5 B, _; }, n+ F4 e! a1 g- O8 K2.8 Quality of service
4 M8 o3 Y% t! l, F/ p7 J2.9 Spectrum accuracy 6 q; G( e; c, w
2.10 Handover 7 b* t7 E9 ~+ `7 x" b& J6 Q% N2 j3 O
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