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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
7 b8 l( e3 S6 w0 ?. WIssues:
: Y w5 N8 V U6 }0 ?; c, V [9 T$ c2.1 Interference # F: j& ^8 }/ ^9 k( h H! h* V
2.2 Spectrum
, F/ O; s) j- a$ O6 {3 [2.3 Access control 9 e, j8 \2 X& k" j
2.4 Lawful interception
7 b4 y8 a! D9 F8 G' s, d* S: r2.5 Equipment location 6 K( q+ _ ?6 p1 X, h5 o
2.6 Network integration
7 A. I2 z; b( E2.7 Emergency calls
8 N K" H" ~0 u, W6 T2.8 Quality of service
: z w- U3 k7 t+ }4 ^" |$ |+ Z2.9 Spectrum accuracy
& [# k: }# N+ h: U/ J. b2.10 Handover
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