MobileAccess 1000 System, Руководство по установке и настройке

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Introduction MobileAccess™ 1000/1200
2
UM-1000, Revision 2.2
1.2 System Description
The MobileAccess™ system provides in-building coverage by routing RF signals
from (up to three) BTS or BDA units, through optic fibers to remote areas where the
signals are converted back to RF and interfaced to antennas covering the remote
area. All system elements can be remotely controlled and monitored from a single
location.
The MobileAccess™ coax and Fiber Optic hybrid solution consists of the following
elements:
•
Radio Interface Unit (RIU) – Provides direct, simple interface to up to three
BTS or BDA units supporting up to three different services. Connections can
be simplex or duplex.
RIU output signal is automatically adjusted to respond to a range of BTS or BDA
output power levels. This significantly reduces or eliminates the need for
extensive manual site measurements and adjustments required to provide the
optimal input to the Base Units.
The RIU RF output signals are combined and fed via direct coax connection to
MobileAccess Base Units.
•
Base Units (BUs) – convert the RF signal received from the RIU (or passive
interface) to an optic signal that is then split and routed via optic fiber to
Remote Hub Units located in remote locations. Each BU can support up to
eight RHUs.
•
Remote Hub Units (RHUs) – converts the optic signal to an RF signal and
feeds it to the antennas in the remote areas in order to provide the required
coverage. Each RHU supports two different services (one high-band and one
low-band) and provides coax connections to up to four antennas. The RHU
filters and amplifies the optic signal received from the BU according to the
service it supports.
A third service can be added using a MobileAccess 1200 add-on or independent
module.
Wireless LAN services can also be added to the MobileAccess 1000 RHU by
connecting the
MobileAccess 840 add-on module. This provides wireless LAN
signals to the antennas connected to the MobileAccess 1000 RHU.
•
System Controller – provides monitoring and control to all MobileAccess
system elements, from a single location.