Co-Siting With Tdma Rbs Using An Asu - Ericsson RBS 2106 Reference Manual

Radio Configurations, RBS 2106 and RBS 2206
Co-Siting with dTRU-Based RBS 2000 Using Hybrid Combiner
Table 44
Result Original
SCC SCC
3 x 8 * 3 x 4
* 3 x 6 is accomplished with a partly-equipped RBS 2.
Co-Siting with dTRU-Based RBS 2000 without Hybrid Combiner
Table 45
Result Original
SCC SCC
3 x 4 3 x 2
4.8

Co-Siting with TDMA RBS Using an ASU

The ASU is used for co-siting with a TDMA RBS, more specifically
RBS 884 for 800 MHz and 1900 MHz, and RBS 882 for 800 MHz
only. The unit allows a TDMA cabinet to share receiver antennas with
a GSM cabinet. The ASU is installed in a dTRU based GSM cabinet.
The implementation is for 800 and 1900 MHz. The end configuration
differs for different site configurations of the TDMA RBS. One-, two-
and three-sector sites can be supported. In the case of two- or
three-sector sites, the figures below only show one part of the RBS.
4.8.1 Separate TX and Two Separate RX Antennas
The original antenna configuration of the TDMA RBS is TX + RX +
RX. When co-siting is configured, the antennas are moved from the
TDMA RBS to the dTRU based RBS. The dTRU based RBS can be
prepared for co-siting already at the factory. The RX paths to the
TDMA RBS will go through the ASU.
By moving the receiver antennas to the dTRU based RBS, it is possible
to benefit from minimum interference with the old equipment.
82 (485)
Expansion using hybrid combiner
RBS 1
Basic Antennas
Configuration
3 x G9deh_2.4 (2) (2) (2)
3 x G9deht_2.4 (2) (2) (2)
3 x G18dh_2.4 (2) (2) (2)
3 x G18dht_2.4 (2) (2) (2)
Expansion using CDU-G without hybrid combiner
RBS 1
Basic Antennas
Configuration
3 x G9de_2.2 (2) (2) (2)
3 x G9det_2.2 (2) (2) (2)
3 x G18d_2.2 (2) (2) (2)
3 x G18dt_2.2 (2) (2) (2)
3 x G19dh_2.4 (2) (2) (2)
3 x G19dht_2.4 (2) (2) (2)
© Ericsson Radio Systems AB
— All Rights Reserved —
RBS 2
Original SCC Basic
Configuration
3 x 4 3 x G9deh_2.4
3 x G9deht_2.4
3 x G18dh_2.4
3 x G18dht_2.4
RBS 2
Original SCC Basic
Configuration
3 x 2 3 x G9de_2.4
3 x G9det_2.4
3 x G18d_2.4
3 x G18dt_2.4
3 x G19dh_2.4
3 x G19dht_2.4
EN/LZT 720 0008
Antennas
(2) (2) (2)
(2) (2) (2)
(2) (2) (2)
(2) (2) (2)
Antennas
(2) (2) (2)
(2) (2) (2)
(2) (2) (2)
(2) (2) (2)
(2) (2) (2)
(2) (2) (2)
P2A
2001-11-28