ADC Telecommunications Inc. DSC0802P Benutzerhandbuch
Overview
With the increasing popularity of wireless devices, subscribers expect to have coverage at any time in
any place. This requires service providers to increase capacity, which is typically done by adding new cell
sites. However, with city centers becoming more congested and local government zoning regulations
increasingly more stringent, obtaining permits for new wireless cell sites is becoming nearly impossible.
Extending service to these hard-to-reach areas often requires overcoming major challenges. The
Digivance Street-Level Coverage Solution (SCS) is a cost-effective solution for extending or distributing
capacity from base stations to other areas that require coverage.
any place. This requires service providers to increase capacity, which is typically done by adding new cell
sites. However, with city centers becoming more congested and local government zoning regulations
increasingly more stringent, obtaining permits for new wireless cell sites is becoming nearly impossible.
Extending service to these hard-to-reach areas often requires overcoming major challenges. The
Digivance Street-Level Coverage Solution (SCS) is a cost-effective solution for extending or distributing
capacity from base stations to other areas that require coverage.
Application
Digivance is the only all-digital distributed antenna system (D-DAS) available today. By using patented
technology, the Digivance SCS digitizes the entire designated RF band, digitally transports it over fiber,
and reconstructs the signal at full bandwidth, regardless of modulation technology. Digital RF transport
allows the signals to be replicated at full dynamic range, independent of the fiber length, which
improves data throughput. As advanced, high data-rate broadband services become available, networks
with Digivance SCS technology will be ready.
technology, the Digivance SCS digitizes the entire designated RF band, digitally transports it over fiber,
and reconstructs the signal at full bandwidth, regardless of modulation technology. Digital RF transport
allows the signals to be replicated at full dynamic range, independent of the fiber length, which
improves data throughput. As advanced, high data-rate broadband services become available, networks
with Digivance SCS technology will be ready.
ADC’s digital RF transport technology is also conducive to enhancements such as free space optical laser
links instead of physical fiber connections for even faster deployment and CWDM capabilities. The
CWDM option allows multiple transmit and receive paths over a single fiber cable, potentially reducing
annual fiber lease costs. Free space optical laser links overcome fiber availability issues, as well as enable
service providers to deploy wireless capacity in specific dense urban areas in days.
links instead of physical fiber connections for even faster deployment and CWDM capabilities. The
CWDM option allows multiple transmit and receive paths over a single fiber cable, potentially reducing
annual fiber lease costs. Free space optical laser links overcome fiber availability issues, as well as enable
service providers to deploy wireless capacity in specific dense urban areas in days.
Digivance SCS offers all the benefits of digital technology in a maintenance-free, compact remote unit.
Its versatility and small size allow service providers to quickly deploy networks in areas where zoning
restrictions often hinder installation of base stations. Centralization of base station capacity can also be
realized using Digivance SCS. This allows service providers to further benefit by reducing capital
expenditures and annual operating costs.
Its versatility and small size allow service providers to quickly deploy networks in areas where zoning
restrictions often hinder installation of base stations. Centralization of base station capacity can also be
realized using Digivance SCS. This allows service providers to further benefit by reducing capital
expenditures and annual operating costs.
System Description
The Digivance SCS is an all-digital distributed antenna system (D-DAS) that optically transports RF signals
to difficult coverage areas such as congested city center locations, tunnels, and canyons. One point-to-
point RF transport link consists of a host unit and corresponding remote unit. Base station radio
capacity may be simulcast to multiple remotes by using RF splitting and combining capabilities.
to difficult coverage areas such as congested city center locations, tunnels, and canyons. One point-to-
point RF transport link consists of a host unit and corresponding remote unit. Base station radio
capacity may be simulcast to multiple remotes by using RF splitting and combining capabilities.
The Digivance SCS host unit is typically rack-mounted at the base transceiver station (BTS) site or co-
located with other host units at a centralized base station radio (BR) suite. The RF signal is transported
digitally over fiber optic cable connecting the host to a remote SCS unit. The Digivance SCS remote unit
is positioned at the area requiring coverage and interfaces with an antenna to distribute the RF signal.
The distance between the Digivance SCS host unit and remote unit is typically limited by time delay
requirements of system modulation standards (iDEN
located with other host units at a centralized base station radio (BR) suite. The RF signal is transported
digitally over fiber optic cable connecting the host to a remote SCS unit. The Digivance SCS remote unit
is positioned at the area requiring coverage and interfaces with an antenna to distribute the RF signal.
The distance between the Digivance SCS host unit and remote unit is typically limited by time delay
requirements of system modulation standards (iDEN
®
, GSM, CDMA, etc.), and can be as far as 40 miles
or more. With the product’s 25 dB optical budget, the SCS can be deployed in the most challenging
fiber plants.
fiber plants.
Element Management System (EMS)
The Digivance EMS provides operational and maintenance capabilities for the SCS product. This EMS
can simultaneously monitor a network of Digivance SCS links by daisy-chaining the alarm interfaces of
up to 24 Digivance SCS host units. Each host unit is connected through a controller area network bus,
and the PC can be connected to any of the host units. The Digivance EMS has the ability to download
software, change parameters, and monitor alarms. It also provides three levels of alarms: software
reporting, LEDs, and external contacts.
can simultaneously monitor a network of Digivance SCS links by daisy-chaining the alarm interfaces of
up to 24 Digivance SCS host units. Each host unit is connected through a controller area network bus,
and the PC can be connected to any of the host units. The Digivance EMS has the ability to download
software, change parameters, and monitor alarms. It also provides three levels of alarms: software
reporting, LEDs, and external contacts.
In addition, off-site functionality is accomplished through a terminal at the NOC utilizing Digivance EMS
or Digivance - supported SNMP. Through StarGazer
or Digivance - supported SNMP. Through StarGazer
®
, ADC’s SNMP manager, enhanced GUI, alarm
management and interfaces are provided.
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Digivance
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eet-Level Coverage Solution
Digivance
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