Cisco Cisco Aironet 350 Mini-PCI Wireless LAN Client Adapter Designanleitung
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Enterprise Mobility 4.1 Design Guide
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Chapter 13 Cisco Unified Wireless Location-Based Services
Cisco Location-Based Services Architecture
The integration of a Cisco Location Appliance into a Cisco Unified Wireless Network architecture
immediately enables improvements to base-level location capabilities. These improvements include:
immediately enables improvements to base-level location capabilities. These improvements include:
•
Scalability—Adding a Cisco Location Appliance increases the scalability of the Cisco UWN from
on-demand tracking of a single device at a time to a maximum tracking capacity of 2500
simultaneous devices (WLAN clients, RFID tags, rogue access points, and rogue clients) per
location appliance. For deployments requiring support of greater numbers of devices, additional
location appliances can be deployed and managed under one or more WCS servers.
on-demand tracking of a single device at a time to a maximum tracking capacity of 2500
simultaneous devices (WLAN clients, RFID tags, rogue access points, and rogue clients) per
location appliance. For deployments requiring support of greater numbers of devices, additional
location appliances can be deployed and managed under one or more WCS servers.
•
Historical and statistics trending—The appliance records and maintains historical location and
statistics information, which is available for viewing via WCS or other location clients. This
historical information can be used for location trending, asset loss investigation, RF capacity
management, and to facilitate network problem resolution.
statistics information, which is available for viewing via WCS or other location clients. This
historical information can be used for location trending, asset loss investigation, RF capacity
management, and to facilitate network problem resolution.
•
Chokepoint location—Beginning with Release 4.1 of the UWN, the inclusion of a location appliance
allows for granular and deterministic localization based on the passage of an asset through a
constrained physical area known as a chokepoint. Chokepoint triggers located within these areas and
in proximity to tagged assets stimulate the tags using low-frequency (125 kHz) signalling. The asset
tags in turn transmit the identity of the chokepoint trigger to the location-aware Cisco UWN. This
provides for accurate proximity location, which can range from a radius of under one foot to over
twenty feet, depending on the capabilities of the chokepoint trigger. Applications for chokepoint
location vary from general purpose uses such as theft prevention of high value assets to
industry-specific process control events such as those used in manufacturing plants.
allows for granular and deterministic localization based on the passage of an asset through a
constrained physical area known as a chokepoint. Chokepoint triggers located within these areas and
in proximity to tagged assets stimulate the tags using low-frequency (125 kHz) signalling. The asset
tags in turn transmit the identity of the chokepoint trigger to the location-aware Cisco UWN. This
provides for accurate proximity location, which can range from a radius of under one foot to over
twenty feet, depending on the capabilities of the chokepoint trigger. Applications for chokepoint
location vary from general purpose uses such as theft prevention of high value assets to
industry-specific process control events such as those used in manufacturing plants.
•
Cisco Extensions for Wi-Fi Tags telemetry information and emergency notifications- Beginning
with Release 4.1 of the Cisco UWN, Cisco has partnered with a variety of asset tag vendors to create
an extensible specification for 802.11Wi-Fi based active asset tags. The Cisco Compatible
Extensions Wi-Fi Tag specification defines a common transmission format that tag vendors can use
to interoperate with the location-aware Cisco UWN. This includes a baseline feature set that
encompasses telemetry, tag transmit power level, battery information, and advanced fields for
emergency groups and chokepoints. The addition of a location appliance allows the location-aware
UWN to take advantage of these newly introduced capabilities and benefits customers by providing
the ability to “mix and match” compliant asset tags from different vendors in the same network.
Complete details on the Cisco Compatible Extensions for Wi-Fi Tags program can be found at
with Release 4.1 of the Cisco UWN, Cisco has partnered with a variety of asset tag vendors to create
an extensible specification for 802.11Wi-Fi based active asset tags. The Cisco Compatible
Extensions Wi-Fi Tag specification defines a common transmission format that tag vendors can use
to interoperate with the location-aware Cisco UWN. This includes a baseline feature set that
encompasses telemetry, tag transmit power level, battery information, and advanced fields for
emergency groups and chokepoints. The addition of a location appliance allows the location-aware
UWN to take advantage of these newly introduced capabilities and benefits customers by providing
the ability to “mix and match” compliant asset tags from different vendors in the same network.
Complete details on the Cisco Compatible Extensions for Wi-Fi Tags program can be found at
.
Note
At this time, chokepoint triggers and asset tags are compatible with one another only if they are
supplied by the same vendor.
supplied by the same vendor.
•
Location notifications—The Cisco Location Appliance can dispatch location-based event
notifications via e-mail, Syslog, SNMP traps, and SOAP/XML directly to specified destinations.
These notifications can be triggered under the following conditions:
notifications via e-mail, Syslog, SNMP traps, and SOAP/XML directly to specified destinations.
These notifications can be triggered under the following conditions:
–
Location of a client or asset changes
–
Battery level of an RFID tag drops below a preset value
–
Client or tagged asset strays beyond set distances from pre-determined marker locations
–
Asset enters the proximity of a chokepoint
–
Client or tagged asset becomes missing
–
Asset tag signals that a detachment, tamper, or panic emergency has occurred