Chapter 1 Product Introduction
Functions
l
Common Functions
The RSU82 operates with a BBU to constitute an integrated BS8800 or BS8900. The
RSU82 forwards RF signals from antennas to the BBU for further processing. The
RSU82 provides the following functions by connecting to the BBU:
à
Terminal access and RF link transmission through antennas, including RF
receiving/transmission duplex, low-noise amplification for received or transmitted
RF signals, modulation/demodulation, measurement and report, power control,
calibration, and synchronization.
à
Hybrid networking of radio systems.
à
Connection with the BBU through electrical interfaces or optical interfaces. The
interface implements clock synchronization, transmission delay measurement
and delay compensation, IQ data transmission, operation, maintenance, and
configuration.
à
Power
amplification
control
and
protection,
including
overpower,
over-temperature, and standing wave alarm.
à
Power protection against inverted connection.
à
Alarm query during operation and maintenance.
à
System management, including configuration management, alarm management,
status check, and monitoring through local operation and maintenance interfaces.
à
Local or remote software/hardware version query, software version upgrade,
board reset, power query, auto-calibration, and alignment for electrically tuned
antennas.
l
GSM Mode
à
Operating frequency band: 850 MHz/900 MHz/1800 MHz/1900 MHz.
à
Supports GSM Phase I/Phase II/Phase II +.
à
Supports encoding modes of GPRS CS1 to CS4.
à
Supports space diversity, frequency diversity, time diversity, and polarization
diversity.
à
Supports frequency hopping, and Discontinuous Transmission (
).
à
Supports Timing Advance (
) calculation and super-distance coverage. The
maximum coverage distance is 120 km.
à
Supports Co-Broadcast Control Channel (Co-
).
à
The receiving end supports the Viterbi demodulation algorithm to improve a
system receiving sensitivity and channel decoding capability.
l
UMTS Mode
à
Operating frequency band: 850 MHz/900 MHz/1900 MHz/2100 MHz.
1-5
SJ-20111021104623-005|2012-12-20 (R1.5)
ZTE Proprietary and Confidential
