1、 TIA/EIA STANDARD Cellular Digital Packet Data (CDPD) System Specification Medium Access Control TIA/EIA-732-402 (Upgrade of TIA/EIA/IS-732-402) JULY 2001 TELECOMMUNICATIONS INDUSTRY ASSOCIATION The Telecommunications Industry Association represents the communications sector of ANSI/TIA/EIA-732-402-
2、2001 Approved: June 7, 2001 TIA/EIA-732-402 NOTICE TIA/EIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purch
3、aser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any respect preclude any member or nonmember of TIA/EIA from manufacturing or selling products not conforming to such Standards and Publications, n
4、or shall the existence of such Standards and Publications preclude their voluntary use by those other than TIA/EIA members, whether the standard is to be used either domestically or internationally. Standards and Publications are adopted by TIA/EIA in accordance with the American National Standards
5、Institute (ANSI) patent policy. By such action, TIA/EIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard does not purport to address all safety problems associated with its use or all applicab
6、le 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. 4033-402-UG, formulated under the cognizance of the TIA TR-
7、45.6 Subcommittee on Adjunct Data Packet Wireless Technology.) Published by TELECOMMUNICATIONS INDUSTRY ASSOCIATION 2001 Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 PRICE: Please refer to current Catalog of EIA ELECTRONIC INDUSTRIES ALLIANCE STANDARDS and ENGINEERIN
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9、ion to reproduce a limited number of copies through entering into a license agreement. For information, contact: Global Engineering Documents 15 Inverness Way East Englewood, CO 80112-5704 or call U.S.A. and Canada 1-800-854-7179, International (303) 397-7956 402iTIA/EIA-732-402123456789101112131415
10、161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960Contents1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402-12 Overview of Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11、. . . . . . . . . 402-22.1 Model of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-22.2 MAC Layer Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-3
12、2.2.1 Data Encapsulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-32.2.2 Medium Access Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-42.2.3 Channel Stream Timing and Synchron
13、ization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-43 Service Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402-53.1 Service Primitives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14、 . . . . . . . . . .402-63.2 Services Provided by the MAC Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-73.2.1 Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-73.2.2 Sy
15、nchronization Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-83.2.3 Status Indication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-83.3 Services Required from the Physica
16、l Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-94 Elements of Procedures and Formats of Fields . . . . . . . . . . . . . . . . 402-104.1 Link Layer Frames and MAC Layer Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-104.2 Frame
17、 Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-104.2.1 Frame Flag Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-104.2.2 Transparency . . . . . . . . .
18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-114.2.3 Invalid Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-114.2.4 Inter-Frame Time Fill . . . . . . . . . . . . . . . . .
19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-114.2.5 Frame Abort . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-124.2.6 Order of Bit Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20、 . . . . . . . . . . . . . . . . . .402-124.2.7 Error Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-124.3 Block Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21、 . . . . . . .402-124.3.1 Forward Error Correction Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-124.3.2 Pseudo-random Number (PN) Coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-144.4 Channel Color Code . . . . . . . . .
22、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-154.5 Forward Channel Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-164.5.1 Mapping of Frames to Forward Channel Blocks . . . . . . . . . . .
23、 . . . . . . . . . . . . . . . . . .402-184.5.2 Forward Channel Synchronization Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-184.5.3 Control Flags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-194
24、.5.3.1 Busy/Idle Status Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-194.5.3.2 Decode Status Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-204.6 Reverse Channel Format . . . . . . . .
25、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-214.6.1 Mapping of Frames to Reverse Channel Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-224.6.2 Reverse Channel Dotting Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26、. . . . . . . . . . .402-234.6.3 Reverse Channel Synchronization Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-234.6.4 Continuity Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-244.6.5 Transmitter Ram
27、pdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-24TIA/EIA-732-402402ii1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859605 Definition of Procedures . . . . . . . . . . . . . . . . . .
28、 . . . . . . . . . . . . . . . . . . 402-245.1 Principles of Data Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-245.2 Forward Channel Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29、 .402-265.2.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-265.2.2 MDBS Procedure for the Busy/Idle Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-275.2.2.1 CHANNEL IDLE State . . .
30、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-275.2.2.2 SYNC SEARCH State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-285.2.2.3 SYNC LOCK State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31、. . . . . . . . . . . . . . . . . . .402-285.2.2.4 BUSY HANG State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-295.2.2.5 SYNC HOLD State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-295.2
32、.3 MDBS Procedure for the Decode Status Flag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-305.2.3.1 DECODE IDLE State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-305.2.3.2 RECEIVE BLOCKS State . . . . . . . . . . . . . . . . .
33、. . . . . . . . . . . . . . . . . . . . . . . . . .402-325.2.3.3 EOT WAIT State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-335.2.4 M-ES Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34、. . . . . . . . .402-345.3 Reverse Channel Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-345.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-355.3.2
35、 MDBS Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-385.3.3 M-ES Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-405.3.3.1 IDLE State . . . . . . . .
36、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-405.3.3.2 DEFER State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-425.3.3.3 TRANSMIT BLOCKS State . . . . . . . . . . . . . . . . . .
37、. . . . . . . . . . . . . . . . . . . . . . . .402-425.3.3.4 DECODE WAIT State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-435.3.3.5 BACKOFF State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
38、.402-445.4 Loss of MAC Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-465.5 Configurable Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .402-47402iii123456789101112131415
39、161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960TIA/EIA-732-402PART 402 Medium Access ControlForewordThis foreword is not part of the StandardThis Standard has been produced by the TR-45.6 Subcommittee of the TIA/EIA/TR-45 Committee.This document contains si
40、gnificant portions of material originally submitted by the Cellular Digital Packet Data Forum Inc.This document set constitutes the Cellular Digital Packet Data (CDPD) System Specification. CDPD is a technology intended to provide packet data networking services to mobile hosts. The media used to pr
41、ovide these services consists of radio channels typically used for Advanced Mobile Phone System (AMPS) cellular service.Document StructureThis Standard is published as a series of Parts. Each Part contains information pertaining to one aspect of the system.The functional structure of the Cellular Di
42、gital Packet Data System Specification is as follows:a71 Introduction and OverviewTIA/EIA-732-402 Medium Access Control402iv123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960This document provides an overview of the CDPD Network and serves
43、 as a guide to the remainder of the system specification for specific detailed information.In this Part, design objectives are described and are followed by the design concepts used to realize the stated objectives. The resultant network is then described in terms of its external interfaces, major n
44、etwork elements and network services. A listing of key identifiers in CDPD is then followed by a comprehensive glossary of CDPD terms and a reference list of non-CDPD documents.This Part contains the detailed listing of all Parts of the Cellular Digital Packet Data Specifications.a71 Part 300 to Par
45、t 799Protocols and InterfacesThese Parts form the heart of the CDPD System Specification. They define the communications architecture of CDPD, including communications layer entities, services, protocol stacks, the three key interfaces, Radio Resource Control, Mobility Management, Accounting Managem
46、ent, Support Services and Network Management.a71 Part 800 to Part 899Supplementary Protocol InformationThese Parts contain further specification of the primary CDPD protocols. State transition matrices are used to define protocol state machines, and Protocol Implementation Conformance Statements (PI
47、CS) are provided for implementors.a71 Part 900 to Part 999Protocol Test SpecificationsFollowing an overview of protocol testing, these Parts contain Abstract Test Suites (ATSs) and Protocol Implementation eXtra Information for Test (PIXIT) for the protocols specified in Part 300 to Part 799.a71 Part
48、 1000 to Part 1999Guidelines for Service ProvidersThese Parts describe guidelines for CDPD Service Providers.4021123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960Introduction TIA/EIA-732-402PART 402 Medium Access Control1 IntroductionThis
49、 Part defines the services, procedures and encoding required to provide the Medium Access Control (MAC) layer of the Airlink Interface between the Mobile Data Base Station (MDBS) and Mobile End Systems (M-ESs).The MAC layer defines a protocol that operates within the Data Link Layer of the OSI reference architecture. In the specification of the CDPD Airlink Interface, the Data Link Layer is separated into two distinct sublayers defined by their functions:a71 Logical link control functionsLogical link control provides services for information transfer over logical data link connecti
