Low Level Reader Protocol (LLRP) Version 1

1 Copyright 2005-2010 EPCglobal , All Rights Reserved. Page 1 of 198 1 Low Level Reader Protocol ( llrp ) 2 Version 3 Ratified Standard 4 October 13, 2010 5 Disclaimer 6 EPCglobal Inc is providing this document as a service to interested industries. 7 This document was developed through a consensus process of interested 8 parties. 9 Although efforts have been to assure that the document is correct, reliable, and 10 technically accurate, EPCglobal Inc makes NO WARRANTY, EXPRESS OR 11 IMPLIED, THAT THIS DOCUMENT IS CORRECT, WILL NOT REQUIRE 12 MODIFICATION AS EXPERIENCE AND TECHNOLOGICAL ADVANCES 13 DICTATE, OR WILL BE SUITABLE FOR ANY 14 PURPOSE OR WORKABLE IN ANY APPLICATION, OR OTHERWISE.

2 Use of 15 this document is with the understanding that EPCglobal Inc has no liability for 16 any claim to the contrary, or for any damage or loss of any kind or 17 nature. 18 19 Copyright notice 20 2005-2010, EPCglobal Inc. 21 All rights reserved. Unauthorized reproduction, modification, and/or use of this document is not 22 permitted. Requests for permission to reproduce should be addressed to 23 24 25 EPCglobal is providing this document as a service to interested industries. This 26 document was developed through a consensus process of interested parties. Although efforts 27 have been to assure that the document is correct, reliable, and technically accurate, EPCglobal 28 Inc.

3 Makes NO WARRANTY, EXPRESS OR IMPLIED, THAT THIS DOCUMENT IS 29 CORRECT, WILL NOT REQUIRE MODIFICATION AS EXPERIENCE AND TECHNOLOGICAL 30 ADVANCES DICTATE, OR WILL BE SUITABLE FOR ANY PURPOSE OR WORKABLE IN 31 ANY APPLICATION, OR OTHERWISE. Use of this Document is with the understanding that 32 EPCglobal Inc. has no liability for any claim to the contrary, or for any damage or loss of any 33 kind or nature 34 35 Copyright 2005-2010 EPCglobal , All Rights Reserved. Page 2 of 198 Abstract 36 This document specifies an interface between RFID Readers and Clients. The interface 37 Protocol is called low- Level because it provides control of RFID air Protocol operation 38 timing and access to air Protocol command parameters.

4 The design of this interface 39 recognizes that in some RFID systems, there is a requirement for explicit knowledge of 40 RFID air protocols and the ability to control Readers that implement RFID air Protocol 41 communications. It also recognizes that coupling control to the physical layers of an 42 RFID infrastructure may be useful for the purpose of mitigating RFID interference. 43 Audience for this document 44 The target audience for this specification includes: 45 RFID Network Infrastructure vendors 46 Reader vendors 47 EPC Middleware vendors 48 System integrators 49 Status of this document 50 This section describes the status of this document at the time of its publication.

5 Other 51 documents may supersede this document. The latest status of this document series is 52 maintained at EPCglobal. See for more 53 information. 54 55 On October 13th, llrp Version was ratifieded by the GS1 EPCglobal Board. 56 57 Comments on this document should be sent to the EPCglobal Software Action Group 58 Reader Operations Working Group mailing list at 59 60 61 62 Copyright 2005-2010 EPCglobal , All Rights Reserved. Page 3 of 198 Contents 63 INDEX OF FIGURES .. 12 64 INDEX OF TABLES .. 12 65 1 (INFORMATIVE) GLOSSARY .. 13 66 2 INTRODUCTION .. 16 67 3 ROLE WITHIN THE EPCGLOBAL NETWORK ARCHITECTURE .. 17 68 4 TERMINOLOGY AND TYPOGRAPHICAL CONVENTIONS.

6 19 69 5 OVERVIEW OF llrp .. 19 70 TYPICAL llrp TIMELINE .. 20 71 Version Negotiation .. 20 72 Runtime 21 73 6 llrp OPERATION .. 22 74 INVENTORY, RF SURVEY AND ACCESS OPERATIONS .. 22 75 Operation Triggers .. 32 76 Summary .. 32 77 Reader Operation Triggers .. 33 78 Access Operation Triggers .. 34 79 REPORTING, EVENT NOTIFICATION AND KEEPALIVES .. 34 80 7 MESSAGES, PARAMETERS AND 36 81 36 82 Formatting Conventions and Data Types .. 36 83 Messages .. 37 84 Parameters .. 38 85 General 38 86 Timestamp .. 38 87 UTCT imestamp Parameter .. 38 88 Uptime Parameter .. 38 89 Fields .. 39 90 Functional Grouping .. 39 91 llrp Messages and Actions.

7 41 92 8 CUSTOM EXTENSION .. 43 93 CUSTOM_MESSAGE .. 43 94 CUSTOM PARAMETER .. 43 95 CUSTOM EXTENSION IN COMMANDS .. 44 96 CUSTOM EXTENSION IN INDIVIDUAL llrp PARAMETERS .. 44 97 ALLOWABLE PARAMETER EXTENSION .. 44 98 9 Protocol Version MANAGEMENT .. 45 99 MESSAGES .. 45 100 GET_SUPPORTED_VERSION .. 45 101 GET_SUPPORTED_VERSION_RESPONSE .. 45 102 SET_PROTOCOL_VERSION .. 46 103 46 104 Copyright 2005-2010 EPCglobal , All Rights Reserved. Page 4 of 198 10 Reader DEVICE CAPABILITIES .. 47 105 MESSAGES .. 47 106 GET_READER_CAPABILITIES .. 47 107 GET_READER_CAPABILITIES_RESPONSE .. 47 108 PARAMETERS .. 48 109 GeneralDeviceCapabilities Parameter.

8 48 110 MaximumReceiveSensitivity Parameter .. 49 111 ReceiveSensitivityTableEntry Parameter .. 49 112 PerAntennaReceiveSensitivityRange 49 113 PerAntennaAirProtocol 50 114 GPIOC apabilities Parameter .. 50 115 LLRPC apabilities Parameter .. 51 116 AirProtocolLLRPC apabilities 52 117 RegulatoryCapabilities Parameter .. 52 118 UHFBandCapabilities 53 119 TransmitPowerLevelTableEntry Parameter .. 53 120 FrequencyInformation Parameter .. 54 121 FrequencyHopTable Parameter .. 54 122 FixedFrequencyTable Parameter .. 55 123 RFSurveyFrequencyCapabilities Parameter .. 55 124 11 Reader OPERATION (RO) .. 55 125 MESSAGES .. 55 126 ADD_ROSPEC .. 55 127 ADD_ROSPEC_RESPONSE.

9 56 128 DELETE_ROSPEC .. 56 129 DELETE_ROSPEC_RESPONSE .. 56 130 START_ROSPEC .. 57 131 START_ROSPEC_RESPONSE .. 57 132 STOP_ROSPEC .. 57 133 STOP_ROSPEC_RESPONSE .. 57 134 ENABLE_ROSPEC .. 58 135 ENABLE_ROSPEC_RESPONSE .. 58 136 DISABLE_ROSPEC .. 58 137 DISABLE_ROSPEC_RESPONSE .. 59 138 GET_ROSPECS .. 59 139 GET_ROSPECS_RESPONSE .. 59 140 PARAMETERS .. 59 141 ROSpec Parameter .. 59 142 ROBoundarySpec Parameter .. 60 143 ROSpecStartTrigger Parameter .. 60 144 PeriodicTriggerValue Parameter .. 61 145 GPIT riggerValue Parameter .. 61 146 ROSpecStopTrigger Parameter .. 62 147 AISpec Parameter .. 62 148 AISpecStopTrigger 63 149 TagObservationTrigger 63 150 InventoryParameterSpec Parameter.

10 64 151 RFSurveySpec Parameter .. 64 152 RFSurveySpecStopTrigger Parameter .. 65 153 LoopSpec Parameter .. 65 154 12 ACCESS 66 155 MESSAGES .. 66 156 ADD_ACCESSSPEC .. 66 157 ADD_ACCESSSPEC_RESPONSE .. 66 158 DELETE_ACCESSSPEC .. 66 159 Copyright 2005-2010 EPCglobal , All Rights Reserved. Page 5 of 198 DELETE_ACCESSSPEC_RESPONSE .. 67 160 ENABLE_ACCESSSPEC .. 67 161 ENABLE_ACCESSSPEC_RESPONSE .. 67 162 DISABLE_ACCESSSPEC .. 68 163 DISABLE_ACCESSSPEC_RESPONSE .. 68 164 GET_ACCESSSPECS .. 68 165 68 166 CLIENT_REQUEST_OP .. 69 167 CLIENT_REQUEST_OP_RESPONSE .. 69 168 PARAMETERS .. 69 169 AccessSpec 69 170 AccessSpecStopTrigger Parameter.