Mode
Frequency
Band
Supported
RFU
Maximum
Number of
Supported
Carriers
Number of TX
and RX
Channels
GSM+LTE
(GL)
-
MRFU V1/
MRFU V2
A base station
working in
GSM+LTE
mode supports a
maximum of six
carriers, and one
carrier is
supported by the
LTE side.
1T2R
UMTS+LTE
(UL)
-
WRFU/LRFU
l
2 or 4
carriers
(WRFU)
l
1 carrier
(LRFU)
l
1T2R
(WRFU)
l
2T2R
(LRFU)
3.7.2 Slot Assignment for the RFUs in a Base Station Working in
GSM Only Mode
When a base station works in GSM only mode, the DRFU or GRFU slot assignment in a cabinet
must comply with specific principles.
Site Type Description
The configuration principles for a dual-band GSM base station are similar. For example, the
configuration principles for a dual-band base station (900 MHz and 1800 MHz) are similar to
the principles for a dual-band (850 MHz and 1800 MHz) base station. The following description
is based on a dual-band base station (900 MHz and 1800 MHz).
&
is used to separate 900 MHz
band from 1800 MHz band in a dual-band base station. The GSM S4/4/4 & S4/4/4 configuration
indicates a base station works in dual-band mode on the GSM side. S2/2/2(1G+1G+1G) indicates
that a base station in S2/2/2 configuration is configured with one GRFU in each sector. GRFU
is represented by G.
Numbering Scheme
l
The sectors in a base station working in GSM only mode are numbered from G1 in a
numerical order, for example G1 and G2. Low-frequency sectors are numbered from G1
to G6, and high-frequency sectors are numbered from G7 to G12.
l
The slots are numbered from 0 in a numerical order, for example slot 0, slot 1, and slot 2.
A slot can be identified through cabinet slot number, for example, slot 1 in cabinet
1 (primary RFC).
Principles for RFU Slot Assignment
Scenario 1: A single-band base station supporting not more than three sectors for the band,
with the configuration of GRFUs or DRFUs in a single RFC
BTS3900
Hardware Description
3 BTS3900 Hardware Configuration
Issue 04 (2011-02-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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