Handbook

Table Of Contents
ClearFill Star CDMA
1100187 Rev. 1.0
Page 32 of 152
Up to 24 RRHs can be connected to a summing GES. The number of RRHs is independent
from the type of service (voice or data) for CDMA. At least 24 RRHs for voice 3G1x, 24
RRHs for data transmission EV-DO and the required number of RRHs for the guided hard-
handover- service, called the beacon feature, can be connected to a summing GES.
For detailed information concerning summing modes please refer to section 3.5.
3.3.3 Number of RRH for beacon
ClearFill®Star system is capable to guide hard handovers from the outdoor macro carriers to
the indoor carrier and vice versa reaching similar handover success rates as the soft
handover in CDMA. The guided hard handover is supported by implementing a set of beacon
RRHs at each entrance area.
A set of beacon RRHs consists of one RRH for the macro frequencies (installed inside the
entrance) and one RRH for the indoor frequencies (located at the outside close to the door
area).
Beacon RRHs can be connected without any impact on the maximum number of RRHs that
can get connected to a summing switch.
RRH can generate up to 7 pilot beacon signals to support the hard handover. The beacon
signals are generated alternatively to the mobile signal coverage function.
For further information, please refer to chapter3.5.
3.3.4 Number of BSI
The BSI is the interface between BTS and Ethernet Infrastructure. Its function is in downlink
to digitize and packet according to Ethernet standard the RF signal of the base station.
For the uplink the BSI translates the digitized packet stream back to RF.
A summing function is included in the BSI, which sums the UL data streams of several
RRHs.
The BSI is supporting voice or data service. A Twin-BSI can support 1 carrier voice and 1
carrier data or 2 carriers for each service (2 carriers for voice OR
2 carriers for data).
The number of BSIs depends on the capacity requirement; one single BSI can handle one
carrier.
See Figure 15 and Figure 16 for typical BSI configurations.