TIA-102 BAAC-A-2003 Project 25 Common Air Interface Reserved Values Supersedes TIA EIA-102 BAAC-1 2001《项目25-TIA EIA-102 BAAC-1 2001通用空中接口预留价值取代》.pdf

1、 TIA STANDARD Project 25 Common Air Interface Reserved Values TIA-102.BAAC-A Revision of TIA/EIA-102.BAAC) TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Industries Alliance ANSI/TIA-102.BAAC-A 2003 Approved: December 18, 2003

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6、s all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From Standards Proposal No

7、. 3-4676-RV1, formulated under the cognizance of the TIA TR-8.15 Subcommittee on Common Air Interface.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2002 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TELECOM

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20、A WITHOUT SUCH LIMITATIONS. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-102.BAAC iContents 1. Scope .1 1.1 Conventions.1 1.2 Default Values .1 1.3 Revision History.2 1.4 Normativ

21、e References .2 1.5 Informative References2 2. Values 2 2.1 Network Access Code2 2.2 Link Control Format .3 2.3 Manufacturers ID.3 2.4 Source and Destination ID .3 2.5 Talk Group ID 4 2.6 Message Indicator4 2.7 Key ID4 2.8 Algorithm ID .4 2.9 Service Access Point .5 2.10 Emergency Indicator5 2.11 Da

22、ta Unit ID .5 Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-102.BAAC iiThis page intentionally left blank. Copyright Electronic Industries Alliance Provided by IHS under license wi

23、th EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-102.BAAC 11. Scope This document is a supplement to the Common Air Interface, reference 1, that lists all of the reserved values for the fields of information. This is intended to be interpreted with the Com

24、mon Air Interface and is not intended to be understood by itself. 1.1 Conventions The Common Air Interface defines the following fields with special reserved values. Name Abbrev. Size (bits) Network Access Code NAC 12 Link Control Format LCF 8 Manufacturers ID MFID 8 Source ID 24 Destination ID 24 T

25、alk Group ID TGID 16 Message Indicator MI 72 Key ID KID 16 Algorithm ID ALGID 8 Service Access Point SAP 6 Emergency Indicator E 1 Data Unit ID DUID 4 Some of these fields have values that are reserved for future standard definitions. There are also some values that are defined for standard operatio

26、n in this document. Throughout this document the values that are inserted into the fields are represented as hexadecimal or binary numbers. This is done to make it convenient to compare the value in a machine representation. The hexadecimal numbers are represented with a leading $ sign to signify th

27、e radix for the number. Binary numbers are represented with a leading % sign. For some values a familiar form is also given in decimal. The familiar form is used as a displayed value in some applications while the hexadecimal representation is meant to represent the value within a computer process i

28、nside a radio. When a decimal representation is used it is given in the customary format, without a leading $ sign or % sign. 1.2 Default Values Many of the fields have default values defined for them. The purpose of a default value is to define a value that may be safely used in normal operation wi

29、thout explicit programming by the user of the radio equipment. Default values may be programmed at the time of manufacture and used until a particular value is assigned or programmed by the radio user. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo re

30、production or networking permitted without license from IHS-,-,-TIA-102.BAAC 21.3 Revision History January 25, 1993, P25.930125.1.0, contained original values for voice. April 8, 1993, P25.930125.1.1, revised so that this is no longer an appendix to the Common Air Interface. July 12, 1993, P25.93012

31、5.1.2, revised to add SAP and ALGID values. December 13, 1993, P25.930125.1.3, revised to add more SAP values and 16-bit talk group IDs. June 2, 1994, final revision for publication. An MFID is assigned for Transcrypt. Version A, February 6, 1995, revised Algorithm IDs and SAP values. Also added def

32、inition of the Emergency bit. Version B, June 22, 1995, revised the MFID list to include more manufacturers, published as revision A. Version 1.0, 21 May, 1999, revised to remove references to analog carrier squelch, and add new access code definitions. Version 1.1, 24 June, 1999, defines NAC codes

33、$F7E and $F7F. Version 1.2, addendum 1, 31 January 2001, defines SNDCP SAP value. Version 2.0, 26 March 2003, defines Data Unit ID values. Version 2.1, 22 July 2003, corrections from letter ballot. 1.4 Normative References The following documents contain provisions which, through reference in this t

34、ext, constitute provisions of this document. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this document are encouraged to investigate the possibility of applying the most recent editions of the standards indi

35、cated below. ANSI and TIA maintain registers of currently valid national standards published by them. 1 Project 25 FDMA Common Air Interface, June 1999, TIA102.BAAA-A. 2 Project 25 Block Encryption Protocol , July 2002, TIA102.AAAD. 1.5 Informative References 6 MFID Manufacturers Identification Numb

36、er Assignment Guide and Procedures, April 2001, see the TIA web page, TR-8.15 committee. 7 Project 25 Link Control Word Formats and Messages, May 1996, TSB102.AABF, and addendum December 2002, TSB102.AABF-1. 2. Values 2.1 Network Access Code The default NAC is $293. The value of $F7E is defined to a

37、llow a receiver to open upon receipt of any NAC. The value of $F7F is defined to allow a repeater to receive and retransmit any NAC. All of these values are tabulated below. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking per

38、mitted without license from IHS-,-,-TIA-102.BAAC 3Standard NAC Values NAC Explanation $293 DEFAULT $F7E Receiver to open on any NAC $F7F Repeater to receive and retransmit any NAC This document advises implementations not to transmit the NAC values $F7E or $F7F. These values are intended for use in

39、receivers. 2.2 Link Control Format The LCF shown in the Common Air Interface document, reference 1, uses four values tabulated below. Other values are also defined for this field in the Link Control Word Formats document, reference 7. Standard LCF Values LCF Meaning $00 Defines the format for Group

40、Calls. The LC contains an Emergency bit, TGID, and a Source ID. $03 Defines the format for Individual Calls. The LC contains a Source ID and a Destination ID. $80 Encrypted LC information, with same contents as $00. $83 Encrypted LC information, with same contents as $03. 2.3 Manufacturers ID The MF

41、ID uses a Standard Value of $00 or a Standard Value of $01 to represent operation in conformance to the standard. Other values are defined in reference 6. The MFID Standard Value of $01 was added to the standard on April 18, 2001. The standard used MFID $00 exclusively prior to that date. All parts

42、of the standard that derive from definitions in the Project 25 standard prior to April 18, 2001 shall use MFID $00 for compliance to the standard. New definitions in the standard may use MFID $01 in cases where MFID $00 cannot be used, perhaps because of exhaustion of opcode values or for other reas

43、ons, and they should clearly define the circumstances where the new value is used for compliance to the standard. 2.4 Source and Destination ID The identifier numbers for individual radio units are placed in the fields for Source ID and Destination ID. Data packets have an analogous field called the

44、 Logical Link ID, which also contains the identifier numbers for individual radio units. There is one standardized value that is used to signify no one, i.e., no radio in a system is assigned to this reserved value. There are also standardized values to signify group addresses. The no one and group

45、addresses may be used as destination addresses for data packets, but never as source addresses unless anonymity is required. The standardized values are given below. Copyright Electronic Industries Alliance Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted w

46、ithout license from IHS-,-,-TIA-102.BAAC 4Standard Source ID and Destination ID Values Destination ID Source ID Familiar Decimal Meaning $000000 0 No one This value is never assigned to a radio unit $000001 - 1 - For general use. $98967F 999 9999 $989680 - 1000 0000 - For talk group use or $FFFFFE 1

47、677 7214 other special purposes. $FFFFFF 1677 7215 Designates Everyone 2.5 Talk Group ID The TGID has one reserved value to denote no one just as the source and destination ID. There is also a reserved value to denote everyone in the radio network. There is also a default TGID to be used in cases wh

48、ere no other talk groups are specifically defined. The default value is used in systems which do not intend to provide any talk group partitioning. Standard TGID Values TGID Familiar Decimal Meaning $0000 0 No one $0001 1 Default Talk Group $FFFF 65535 Everyone 2.6 Message Indicator The MI has only

49、one standardized value, which is used for unencrypted messages. This is the null ($000000.0) value. The null value is never used for encrypted messages. 2.7 Key ID The KID has only one standardized value, which is used for either unencrypted messages, or as a default value for encrypted messages. This value is the null ($0000) value. The reader is referred to the Block Encr