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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 # W/ q; O, Y+ q8 ]5 p0 a
2.2 Spectrum 9 |* W y Z2 g4 ?9 \
2.3 Access control
9 F8 o, A9 |6 ~" p4 f- X2.4 Lawful interception
: G9 o4 b C/ C+ [2.5 Equipment location
9 b: n0 M0 _2 Y. x, C+ e/ d2.6 Network integration
- w5 \ `" \2 d9 N$ p. ^2.7 Emergency calls 2 Q$ J6 c$ f! D" e( I8 O! w
2.8 Quality of service : w0 ^; }1 E: W* p' K
2.9 Spectrum accuracy
8 T; e/ v# N& i) Q0 O* I2.10 Handover
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