Specifications

FIXED-END EQUIPMENT
Radio Network Controller 3000 (RNC3000)
R4-11-4G Wireless Data Communications Network 1-11
The RNC is described in three categories as follows:
• RNC Hardware Configurations
• RNC Functions
• RNC-to-Transceiver Site Link
1.4.1.1 RNC Hardware Configurations
The RNC is based on a VersaModule European (VME) architecture with a
Motorola 68030-based control processor, 1.4 MB floppy disk drive, hard disk
drive, and a configurable number of 68030-based I/O processors. The
modular design accommodates various radio site configurations.
An RNC can be factory-configured to accommodate up to 64 sites
configuration by installing appropriate hardware. Host interface selection
determines which network interface cards should be installed.
A redundant RNC configuration requires one or more A/B switch products
to enable switching the base site links from one RNC to the other. An SNMP-
managed A/B switch is required for WNG controlled or FullVision
controlled redundancy.
The RNC hardware platform permits simple expansion of data base site
interfaces. The unit is rack-mounted in its own cabinet with a power supply
and base site link modem card cage. If a redundant RNC configuration is
ordered, the site link switch also is mounted in one of the two cabinets.
Hardware platform upgrades are ordered as required.
1.4.1.2 RNC Functions
The RNC manages the data messaging in a Private DataTAC system and
provides the data communication interface between the RF networks and the
host computer network. Within these networks, the RNC performs the
following functions:
• Maps host interface protocol to RF protocol through the Registration/
Authorization feature
• Manages the routing of messages from a host network to an RF network,
and vice versa
• Provides message reliability by acknowledging the successful receipt of
messages from the user devices, and reporting undeliverable messages to
the user devices
• Supplies statistics and alarms to a host or FullVision INM to evaluate
operating states and failure types in Private DataTAC systems
• Supports up to 64 base stations over leased-line modems.
While performing these functions, the RNC maintains a detailed database
that includes the status of infrastructure components and user devices.
The above mentioned functions are described in more detail in the Network
Capabilities Specification.