A General Description of the IntelliVue Smart-hopping Core Access Point
IntelliVue Smart-hopping 1.4 GHz Access Point Installation Guide
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interruption. Each Sync Unit provides synchronization for up to 12 APs. The Sync
Unit also distributes the common reference clock signal needed by the IntelliVue
Smart-hopping infrastructure as a whole.
IntelliVue Patient Monitor Mobility
The IntelliVue Smart-hopping infrastructure supports seamless roaming of IntelliVue
Patient Monitors within the area of coverage. This roaming is accomplished via
communications between the IntelliVue Patient Monitors and the Access Points (AP)
as follows.
As an IntelliVue Patient Monitor is moved around a building, it automatically
monitors the quality of the wireless link to its current AP (and it also detects the
presence of other APs). When the quality starts to deteriorate, the IntelliVue Patient
Monitor automatically establishes a new connection to another AP.
The IntelliVue Patient Monitor remains connected to two APs for a finite time, and
thus the same data is received by these APs. During this time, information for
header compression and other data for the connection is routed to the new AP.
One of the two APs subsequently releases the radio connection. If a packet is in
progress when a handover occurs, then the packet is reassembled co-operatively
between the two APs.
The PIIC or PIICix receives an unbroken flow of complete IP packets.
Technical Alerts
Each AP is configured to signal alert conditions that are viewed at the IIC in the
wireless status log.
The IntelliVue Access Point is configured to raise alerts on error conditions. The
alerts are sent over the IntelliVue Smart-hopping/ICN Ethernet LAN infrastructure to
a monitoring station or Database Sever. The Access Point raises an alert if:
• if data loss exceeds the configured threshold
• it loses its synchronization signal
For small systems having only one AP and no Sync Unit, the AP can be configured to
suppress the loss of synchronization signal alert.
Note that the IntelliVue Smart-hopping APC provides System Alerts such as loss of
synchronization, high data loss, AP hardware failure, and over capacity. Additionally,
when redundant APCs are installed, the APC will provide a System Alert for APC
hardware or software failure.
Firmware Updates
Firmware on the IntelliVue Smart-hopping 1.4 GHz Core Access Point is upgraded
from the Access Point Controller by using the Upgrade Tool. Refer to the service
document entitled
IntelliVue Smart-hopping Infrastructure Installation and Service
Guide
for details. The AP firmware image is provided on the
Smart-hopping
Telemetry Service Tool
CD-ROM.
Summary of Contents for ITS4843B
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