Handbook

ClearFill Star CDMA
1100187 Rev. 1.0
Page 15 of 152
2.1.1 Supported Services
The ClearFill®Star system supports the following services:
 CDMA2000 1xRTT systems complying to C.S0002 up to and including Release A
 EvDO Release A 1.25 MHz applications
 Frequency Band Class 0 (800 MHz band, sub-bands 0,1 and 2)
 Frequency Band Class 1 (1900 MHz band)
2.1.2 Identification of System
This chapter gives a short overview of the ClearFill®Star components.
Please see chapter 2.2-Unit description for a more detailed description of
each system element.
2.1.2.1 Point of Interconnection (POI)
The POI attenuates the RF signal of the base station to the input/output system requirements
of the BSI, e.g. when a base station with 2 carriers per sector is used the POI has the
function to split the RF signal into two paths to provide an RF signal to the two required BSIs.
Figure 4 Point of Interconnection (POI) device
2.1.2.2 Base Station Interface (BSI)
The BSI is the interface between BTS and Ethernet Infrastructure. Its function is in downlink
(DL) to digitize and packet the RF signal of the base station according to Ethernet standard.
For the uplink (UL) the BSI translates the digitized packet stream back to RF.
Figure 5 Twin Base Station Interface (BSI) device
2.1.2.3 Remote Radio Head (RHH)
The RRHs are indoor RF front-ends. They have 1Gigabit-Ethernet interfaces. An automatic
summing function is included in the RRH to sum the UL data streams of several RRHs.
Alternatively to the mobile signal coverage function, the RRH can generate up to 7 pilot
beacon signals to support the hard handover. An RRH package includes an external,
removable antenna.