Remote Unit Installation
Ch. 3 Installation Tool
Service Utilities
Installation Tool Operation
1106333-01
Pre-Production
29
Revision 3
Enter latitude/longitude values in this format, where d = degrees and
m = minutes:
dd:mm.mmmN
(or S)
Latitude
Example:
21:02.123S
ddd:mm.mmmW
(or E)
Longitude
Example:
002:45.500E
Step 5
Antenna Pointing
This step includes the antenna pointing process and establishing the
initial airlink with a base station.
Background Information
Steps 5 and 6 establish the airlink communication channel between the
remote unit and the base station. There are four critical processes involved:
•
Synchronization
– Acquire and maintain time and frequency
synchronization with the base station.
•
Ranging
– Adjust ODU power levels and transmission intervals so that
the time slots carrying data arrive at the base station at the proper
time.
•
Registration/Authentication
– Store base station offset code in the
remote unit to identify with which base station the remote unit will
communicate. Store a database record for this remote unit in the
BeamPlex Element Management System (BMS). Associate the remote
unit to the base station, then to the BMS.
Synchronization and ranging occur in Step 5, while registration and
authentication occur in Step 6. This sequence is divided into two steps so
that you can ensure that the unit is receiving an adequate signal level in
Step 5 before you begin the registration process. This is important because
if you need to establish a link with a different base station after
registration, you must manually delete the remote unit from the first base
station’s database.
