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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
% O6 T6 g- I/ `' T6 JIssues: V7 c1 Q& E1 x; P( i2 Q# i8 E0 }
2.1 Interference 1 D4 Y! f% B6 Q. D, ^6 ]
2.2 Spectrum 3 C* j8 D+ w# j- m* f6 |
2.3 Access control " w6 o% ]% \- _% y# ?
2.4 Lawful interception " A2 S: e T( q7 q
2.5 Equipment location : G5 I( f1 }2 J! ?
2.6 Network integration
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$ O8 C, C6 D4 I0 J2.8 Quality of service
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2.10 Handover * N: f6 `6 @1 I5 c8 b. _
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