Airspan AS3010, Руководство по установке оборудования

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Hardw are Insta llatio n Guide O ver view
02030311-10 Airspan Networks Inc. 1-5
addition, up to four BSDUs can be daisy-chained to support a maximum of 24
BSRs. Therefore, a Base Station at maximum configuration can serve up to 6,096
subscribers.
Note: At a Base Station consisting of a single BSR, the BSR typically
interfaces with the provider's backbone through an SDA instead of a BSDU.
(See Section
1.3.1, "Outdoor Radio with Indoor Switch/Hub").
1.2.4. Global Positioning System (GPS) - Optional
The GPS antenna is a rugged, self-contained GPS receiver and antenna that receives
a universal GPS satellite clock signal. The GPS is an optional unit that connects to
the BSDU. The GPS synchronizes (based on frequency hopping) multiple Base
Stations, ensuring that the entire ASWipLL network operates with the same clock
based on a universal satellite clock signal. This is crucial in eliminating radio
frequency ghosting effects.
1.2.5. Base Station Power Supply (BSPS) - Optional
The BSPS is an optional third-party unit that is implemented at Base Stations to
provide –48 VDC power supply and power redundancy. The BSPS is installed in a
standard 19-inch cabinet. The BSPS connects to the BSDU(s).
The BSPS provides the BSDUs and BSRs with the following:
„ Power supply of –48 VDC.
„ Power redundancy in case of power failure. The BSPS charges a battery bank
that provides power redundancy during mains failure. Thus, the BSPS acts as a
DC-uninterruptible power supply (UPS) with a battery connected to it. The size
of the battery determines the backup and charging time. Since the system is
current limited, the maximum battery size is based on this limit.
„ Remote power management and monitoring (by ASWipLL's WipManage
program).