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RFID Network Infrastructure Overview

RFID Network Infrastructure Overview. P. Krishna Reva Systems. RFID Network End-nodes. Client Application. 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

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RFID Network Infrastructure Overview

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  1. RFID Network InfrastructureOverview P. Krishna Reva Systems

  2. RFID Network End-nodes Client Application 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 Actions

  3. Can they talk directly? ? Client Application Tag • Passive • Unpredictable state • No network address • Mobile

  4. Need a gateway node … Network Side interface Client Application Reader RF Tag • R  T Comms • Tag energizing • Access tag’s memory

  5. Many tags … Network Side interface Tag Tag Client Application RF Reader 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

  6. Many readers required … Tag Limited range Tag Reader IP Network Tag Client Application RF Tag Reader Tag • Reader Infrastructure • Interference mgmt • R to R • R to T • Device discovery • Device config • Device Mgmt • Security • 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

  7. Multiple Consumers Tag Client Application Tag Reader IP Network Tag RF Tag Client Application Reader Tag • Reader Infrastructure • Interference mgmt • R to R • R to T • Device discovery • Device config • Device Mgmt • Security • Tag access rules mgmt • R  T Comms • Tag energizing • Access tag’s memory • RF link control • Interference mgmt • T to T

  8. 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

  9. 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

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