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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
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2.3 Access control ! R/ z6 D# W; z7 t' L1 ?6 L+ `
2.4 Lawful interception
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2.6 Network integration , S1 Y; m2 @! O5 ?; G0 T3 x! r" |
2.7 Emergency calls " [; N+ p' W4 r
2.8 Quality of service 3 Z, B3 h, C0 Y& W% `
2.9 Spectrum accuracy 8 I$ T. z+ z6 `1 J
2.10 Handover
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