1、 TIA-102.BAEB-B (Revision of TIA-102.BAEB-A) September 2014Project 25 IP Data Bearer Service Specification ANSI/TIA-102.BAEB-B-2014 APPROVED: AUGUST 28, 2014 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manu
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23、ATIONS. TIA-102.BAEB-B i Foreword (This foreword is not part of this document.) This document has been created in response to a request by the APCO/NASTD/FED1Project 25 Steering Committee as provided for in a Memorandum of Understanding (MOU) dated April 1992 and amended December 1993. The MOU state
24、s APCO/NASTD/FED shall devise a Common System Standard for digital public safety communications (the Standard) commonly referred to as Project 25 or P25, and that TIA, as agreed to by the membership of the appropriate TIA Engineering Committee, will provide technical assistance in the development of
25、 documentation for the Standard. If the abbreviation “P25” or the wording “Project 25” appears on the cover sheet of this document when published that indicates the APCO/NASTD/FED Project 25 Steering Committee has adopted this document as part of the Standard. The appearance of the abbreviation “P25
26、” or the wording “Project 25” on the cover sheet of this document or in the title of any document referenced herein should not be interpreted as limiting the applicability of the information contained in any document to “P25” or “Project 25” implementations exclusively. This document provides a spec
27、ification of the IP Data Bearer Service for TIA-102 Packet Data. This document was developed by the TIA TR-8.5 Signaling and Data Transmission Subcommittee based on materials originated by the APCO Project 25 Interface Committee (APIC) Data Task Group (DTG). The scope of the 3rdedition (Revision B)
28、of this document was revised to only specify the IP Data Bearer Service; specifications for the Packet Data Host Network Interface and the Mobile Data Peripheral Interface were moved to standalone documents. The revision was also updated to incorporate SNDCP version 3. This document cancels and repl
29、aces the material specific to the IP Data Bearer Service in TIA-102.BAEB-A. There is one annex in this document. Annex A is informative and is not considered part of this specification. The TIA makes no claims as to the applicability of the information contained in this document for any purpose alth
30、ough it is believed that the information will prove to be invaluable to manufacturers and operators of equipment based on the TIA-102 series of documents. Some aspects of the specifications contained in this document may not have been fully operationally tested; however, a great deal of time and goo
31、d faith effort has been invested in the preparation of this document to ensure the accuracy of the information it contains. 1APCO/NASTD/FED is an abbreviation for the Association of Public-Safety Communications Officials (APCO), the National Association of State Technology Directors (NASTD), and the
32、 various agencies of the Federal government (FED). TIA-102.BAEB-B ii Patent Identification The readers attention is called to the possibility that compliance with this document may require the use of one or more inventions covered by patent rights. By publication of this document, no position is tak
33、en with respect to the validity of those claims or any patent rights in connection therewith. The patent holders so far identified have, we believe, filed statements of willingness to grant licenses under those rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to
34、 obtain such licenses. The following patent holders and patents have been identified in accordance with the TIA intellectual property rights policy: No patents have been identified TIA shall not be responsible for identifying patents for which licenses may be required by this document or for conduct
35、ing inquiries into the legal validity or scope of those patents that are brought to its attention. TIA-102.BAEB-B iii Table of Contents 1. Introduction . 1 1.1 Scope . 1 1.2 References . 1 1.2.1 Normative References 1 1.2.2 Informative References 2 1.3 Acronyms and Abbreviations 2 1.4 Definitions .
36、4 1.5 Conventions . 5 1.5.1 Message Bit Numbering . 5 1.5.2 Symbols 5 2. Architecture 6 2.1 IP Data and Control Signaling 6 2.2 IP Convergence Protocols 6 2.2.1 Simple CAI Encapsulation Protocol (SCEP) . 7 2.2.2 Subnetwork Dependent Convergence Protocol (SNDCP) 7 2.3 Service Setup . 7 2.3.1 Endpoint
37、 Connectivity . 7 2.3.2 IP Address Binding . 7 2.4 Data Transfer 8 3. SCEP Procedures . 9 3.1 SCEP IP Address Binding 9 3.2 ARP Overview 9 3.3 ARP Procedures . 9 3.4 IP Datagram Conveyance 10 3.4.1 Inbound Conventional FNE Data 10 3.4.2 Outbound Conventional FNE Data . 11 3.4.3 Direct and Repeated D
38、ata 13 4. SCEP Messages 15 4.1 IP Datagrams . 15 4.2 ARP Messages . 15 4.2.1 ARP Request 17 4.2.2 ARP Reply 17 5. SNDCP Procedures 18 5.1 Common Procedures 18 5.1.1 SNDCP Functions 19 5.1.1.1 Context Management . 19 5.1.1.1.1 Static IPv4 Address Assignment 20 5.1.1.1.2 Dynamic IPv4 Address Assignmen
39、t . 20 5.1.1.2 IP Datagram Conveyance 20 5.1.1.2.1 Confirmed IP Datagram Conveyance 20 5.1.1.2.2 Unconfirmed IP Datagram Conveyance 21 TIA-102.BAEB-B iv 5.1.1.3 Header Compression 21 5.1.1.4 Data User Authentication 21 5.1.1.5 Data Host Network Selection 21 5.1.2 SNDCP Contexts 22 5.1.3 SNDCP States
40、 22 5.1.3.1 Idle State . 22 5.1.3.2 Ready* State . 22 5.1.3.3 Standby State . 22 5.1.3.4 Ready State 22 5.1.3.5 Closed State and Ready Roaming State 22 5.1.4 SNDCP Timers . 23 5.1.4.1 Standby Timer 23 5.1.4.2 Ready and Ready* Timer 23 5.1.4.3 Activation Wait Timer 23 5.1.4.4 Timer Terminology 23 5.2
41、 TDS Procedures . 24 5.2.1 TDS State Machine Definition . 24 5.2.2 TDS State Definitions 26 5.2.2.1 Closed State . 26 5.2.2.2 Idle State . 26 5.2.2.3 Ready* State . 26 5.2.2.4 Standby State . 27 5.2.2.5 Ready State 28 5.2.2.6 Ready Roaming State . 29 5.2.3 TDS State Transitions . 29 5.2.3.1 SU TDS S
42、tate Transition Perspective . 30 5.2.3.2 FNE TDS State Transition Perspective . 31 5.2.4 TDS Timers . 31 5.2.4.1 Standby Timer 31 5.2.4.2 Ready Timer . 32 5.2.4.3 Activation Wait Timer 32 5.2.5 TDS Context Activation Procedures 33 5.2.5.1 SNDCP Network Service Access Point Identifier 33 5.2.5.2 Data
43、 Subscriber Unit Type 33 5.2.5.3 SU Initiated TDS Context Activation Procedures 33 5.2.5.4 FNE Initiated TDS Context Activation Procedures 35 5.2.6 TDS Context Deactivation . 36 5.2.6.1 Deactivation Type . 37 5.2.6.2 SU Initiated TDS Context Deactivation Procedures 37 5.2.6.3 FNE Initiated TDS Conte
44、xt Deactivation Procedures 38 5.2.7 Trunked SNDCP Service Processing 39 5.2.7.1 Trunked Packet Data Channel (PDCH) Access 39 5.2.7.1.1 General PDCH Access . 39 5.2.7.1.2 SU Requested PDCH Access 40 5.2.7.1.3 Autonomous SU PDCH Access . 40 5.2.7.1.4 FNE Requested PDCH Access 40 TIA-102.BAEB-B v 5.2.7
45、.2 Ready Roaming Operational Procedures . 41 5.2.8 End-to-End TDS IP Datagram Transfer 42 5.2.8.1 Inbound SNDCP Data Transfer 42 5.2.8.1.1 MDP to DH IP Datagram Transfer Requested Access . 43 5.2.8.1.2 MDP to DH IP Datagram Transfer Autonomous Access . 44 5.2.8.2 Outbound SNDCP Data Transfer . 45 5.
46、3 CDS Procedures . 47 5.3.1 CDS State Machine Definition 47 5.3.2 CDS State Definitions . 49 5.3.2.1 Closed State . 49 5.3.2.2 Idle State 49 5.3.2.3 Ready* State 49 5.3.2.4 Standby State . 50 5.3.2.5 Ready State 50 5.3.3 CDS State Transitions 51 5.3.3.1 SU CDS State Transition Perspective 51 5.3.3.2
47、 FNE CDS State Transition Perspective 52 5.3.4 CDS Timers 52 5.3.4.1 Standby Timer 52 5.3.4.2 Ready Timer . 52 5.3.4.3 Activation Wait Timer 53 5.3.5 CDS Context Activation Procedures . 53 5.3.5.1 SNDCP Network Service Access Point Identifier . 53 5.3.5.2 Data Subscriber Unit Type . 54 5.3.5.3 SU In
48、itiated CDS Context Activation Procedures . 54 5.3.5.4 FNE Initiated CDS Context Activation Procedures . 54 5.3.6 CDS Context Deactivation 54 5.3.6.1 Deactivation Type . 54 5.3.6.2 SU Initiated CDS Context Deactivation Procedures . 55 5.3.6.3 FNE Initiated CDS Context Deactivation Procedures . 55 5.
49、3.7 SU Scanning Operation 55 5.3.8 Conventional PDCH Operation . 56 5.3.8.1 Inbound SNDCP Data Transfer 56 5.3.8.2 Outbound SNDCP Data Transfer . 57 6. SNDCP Messages . 58 6.1 General SNDCP Field Definitions . 58 6.1.1 SNDCP PDU Type . 58 6.1.2 SNDCP Version 59 6.1.3 Network Service Access Point Identifier (NSAPI) . 59 6.1.4 Header Compression Type (PCOMP) 60 6.1.5 User Data Payload Compression Type (DCOMP) 60 6.2 Context Management Specific Field Definitions . 61 6.2.1 Network Address Type (NAT) . 61 6.2.2 IPv4 Address 61 6.2.3 Data Subscriber Unit Type (DSUT) 62 6.2.4 User Data
