Transcript slrrp-1
RFID Network Infrastructure Overview P. Krishna Reva Systems Slide 1 RFID Network End-nodes Client Application Actions Tag Actions - Write information to tag - Read information from tag - Where is the tag? - When was the tag seen? - Associate tag to tag-group …. Tag Memory Tag Model information Tag ID Passwords User area Sensor data Slide 2 Can they talk directly? Client Application ? Tag - Passive -Unpredictable state - No network address - Mobile Slide 3 Need a gateway node … Network Side interface Client Application Reader RF Tag R T Comms -Tag energizing -Access tag’s memory Slide 4 Many tags … Network Side interface Client Application Reader Tag Tag RF Tag R T Comms -Tag energizing -Access tag’s memory -RF link control -Interference mgmt -T to T Typical tag density in a facility: 100s to millions Slide 5 Many readers required … Limited range Tag Reader Client Application IP Network Tag RF Tag Tag Reader Reader Infrastructure -Interference mgmt -R to R -R to T -Device discovery -Device config -Device Mgmt -Security Tag R T Comms -Tag energizing -Access tag’s memory -RF link control -Interference mgmt -T to T Typical reader density in a facility: dozens to 1000s Slide 6 Multiple Consumers Tag Client Application IP Network Client Application Tag Reader RF Tag Tag Reader Reader Infrastructure -Interference mgmt -R to R -R to T -Device discovery -Device config -Device Mgmt -Security -Tag access rules mgmt Tag R T Comms -Tag energizing -Access tag’s memory -RF link control -Interference mgmt -T to T Slide 7 Reader Infrastructure Network Problems • Multiple reader problem – Control/feedback of the reader operation • E.g., Air protocol, RF parameters • Multiple air protocol support • Multiple application problem – Create/manage access rules at the readers • E.g., Access operations, tag filters, TIDs • Reader Device Discovery and Configuration • Reader Device Management • Security/Authentication Slide 8 Summary • Inevitable: large number of readers – May even be the most densely deployed networked device in a facility • Standards based solutions to the infrastructure problems – Key to large-scale deployments • Leverage IETF expertise to develop solutions for – Device operations and management – Security & Authentication – Communication protocol to/from readers Slide 9