User Manual

CDMA PicoBTSTM Hardware Description Page 21
4 Maintenance
4.1 Maintenance goals and philosophy
Maintaining a PicoBTS
TM
base station has four goals:
• Prevent loss of service to the subscribers
• Prevent site visits except as a last resort (replacing a faulty
unit)
• Send craft persons to the site with all all the equipment
required to facilitate replacement
• Reduce spares inventory to an absolute minimum
The Samsung maintenance philosophy is simple replacement of
the entire PMU or PRU. Such a philosophy is tenable only
when:
•ThePicoBTS
TM
base station is designed for very high
reliability, and a very long mean time between failures, and
• Procedures focus on remote status reports, restart and
downloading procedures, and a strong preventive maintenance
program based on early prediction of potential problems.
Samsung understands that rapid deployment and low-cost
installation are highly desirable, but that repeated trips to a
site are not. The maintenance philosophy is based on
maximizing remote procedures from the BSM in preference to
site visits.
4.2 Maintenance planning
4.2.1 Life expectancy
The PicoBTS
TM
base station is designed to have a life of 10
years.