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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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$ @1 E$ I& n7 P! f" i' }$ K/ D; r/ m6 v2.1 Interference
2 s* I1 {- b' r2.2 Spectrum
% {7 }+ y/ Q5 y) I0 [1 C2.3 Access control
2 ?2 l& y) Q( s1 R7 ~2.4 Lawful interception ( d: O7 V. S. j! ^- R
2.5 Equipment location
+ V; S( b: ^9 }; \2.6 Network integration
4 h0 S9 A7 G. m: v2.7 Emergency calls 4 _% q( O4 }7 p' E6 f
2.8 Quality of service " j$ _( [7 \7 Y6 u1 C, S: J+ B+ A
2.9 Spectrum accuracy
+ T" ^. z/ c: f3 n. X( v2.10 Handover
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