ANSI TIA-902.BAAE-A-2002 Wideband Air Interface - Logical Link Control (LLC) Layer Specification - Public Safety Wideband Data Standards Project - Digital Radio Technical Standards.pdf

1、 TIA-902.BAAE-A (Upgrade and Revision to TIA-902.BAAE) February 2007Wideband Air Interface- Logical Link Control (LLC) Layer Specification ANSI/TIA-902.BAAE-A-2007 APPROVED: FEBRUARY 12, 2007REAFFIRMED: OCTOBER 3, 2013NOTICE TIA Engineering Standards and Publications are designed to serve the public

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19、S IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. WAI LLC Layer Specification TIA-102.BAAE-A i Foreword (This foreword is not part of this standard.) This document has been published by the Telecommunications Indu

20、stry Association (TIA) in accordance with the terms and conditions provided for in a Memorandum of Understanding (MoU) executed by and between the TIA, the Associated Public-Safety Communications Officials (APCO), the National Association of State Telecommunications Directors (NASTD), and the variou

21、s agencies of the Federal government (FED). This TIA Standard is being promulgated and will be maintained by the TR-8.5 Signaling and Data Transmission committee, and working groups under the sponsorship of the Telecommunications Industry Association. This document has been published as a TIA Standa

22、rd because it contains useful technical information on emerging digital techniques for Land Mobile Radio Service. In particular, it describes the wideband air interface logical link control layer technology. Generally, the wideband air interface has been developed by TIA TR-8.5 to be consistent with

23、 the Statement of Requirements adopted by the National Coordination Committees Interoperability Subcommittee, WG6 Wideband Data. This document references that the primary user needs document will be “APCO Project 25/34 Statement of Requirements (P34SOR)”. This logical Link control layer specificatio

24、n provides a standard for the definition and control of transmission for high-speed digital information over 50, 100, and 150 kHz bandwidth physical radio media. The TIA makes no claims as to the applicability of the information contained in this document for any purpose although it is believed that

25、 the information will prove to be invaluable to designers of wideband data compliant equipment. Some aspects of the specifications contained in this document may not have been fully operationally tested; however, a great deal of time and good faith effort has been invested in the preparation of this

26、 document to ensure the accuracy of the information it contains. While all reasonable efforts have been made to ensure the accuracy of this document, it should be understood that significant work remains in fully developing the standard series and this document will be updated as necessary. TIA-902.

27、BAAE-A WAI LLC Layer Specification 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 taken with respect to the validity

28、 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 obtain such licenses. The foll

29、owing patent holders and patents have been identified in accordance with the TIA intellectual property rights policy: None currently identified TIA shall not be responsible for identifying patents for which licenses may be required by this document or for conducting inquiries into the legal validity

30、 or scope of those patents that are brought to its attention. WAI LLC Layer Specification TIA-102.BAAE-A iii TABLE OF CONTENTS 1. SCOPE1 2. TERMS.2 3. GENERAL LLC LAYER DESCRIPTION.3 3.1 LLC LOGICAL LINK TYPES3 3.1.1 Control Plane (CP) Link .3 3.1.2 User Plane (UP) Link3 3.2 LLC INTERFACE TO SERVICE

31、 USERS .4 3.3 LLC INTERFACE TO MAC/RLA LAYER4 3.4 LLC SERVICES 4 3.4.1 Unconfirmed Delivery Service 5 3.4.2 Confirmed Delivery Service 5 3.4.3 Extended Error Detection5 3.4.4 Flow Control .5 3.4.5 Windowing.5 3.4.6 Bundling of LLC Data .6 3.4.7 Signaling Fragmentation.6 3.4.8 State Variables 6 3.4.9

32、 Logical Link and Service Relationships 7 4. CONTROL PLANE OPERATION FOR ALL CONFIGURATIONS.8 4.1 LINK STATE TRANSITION DIAGRAM8 4.1.1 Closed State.8 4.1.2 Open State .8 4.2 CP LINK PARAMETERS 9 4.3 LINK STATE VARIABLES .9 4.4 CONFIRMED SIGNALING TRANSFER PROCEDURES 9 4.4.1 MTU Size .10 4.4.2 Transm

33、ission .10 4.4.3 Sliding Window ARQ.10 4.4.4 Reception.11 4.4.5 ARQ Retransmission11 4.4.6 Confirmed Signaling Transfer Example MSC.12 4.5 UNCONFIRMED SIGNALING TRANSFER PROCEDURES.12 4.5.1 MTU Size .12 4.5.2 Transmission .12 4.5.3 Reception.13 4.5.4 Unconfirmed Signaling Transfer Example MSC.13 5.

34、USER PLANE LLC OPERATION FOR ALL CONFIGURATIONS .14 5.1 LINK STATE TRANSITION DIAGRAMS FOR FNE CONFIGURATIONS .14 5.1.1 Closed State.15 5.1.2 Connect State (MRC Only)15 5.1.3 Open State .15 5.1.4 Reconnect State .16 5.2 LINK STATE TRANSITION DIAGRAMS FOR DIRECT CONFIGURATIONS .16 5.3 UP LINK PARAMET

35、ERS 16 5.3.1 UP Link Connection Example MSC 17 5.3.2 UP Link Reconnection Example MSC.18 5.3.3 Link State Variables 18 5.4 CONFIRMED DATA TRANSFER PROCEDURES19 5.4.1 MTU Size and Segmentation .19 5.4.2 Transmission .19 TIA-902.BAAE-A WAI LLC Layer Specification iv 5.4.3 Sliding Window SARQ 19 5.4.4

36、Reception 20 5.4.5 SARQ Retransmission. 20 5.4.6 Bundling 21 5.4.7 Confirmed Data Transfer Example MSC 22 5.5 UNCONFIRMED DATA TRANSFER PROCEDURES 23 5.5.1 MTU Size and Segmentation. 23 5.5.2 Transmission. 23 5.5.3 Reception 23 5.5.4 Bundling 23 5.5.5 Unconfirmed Data Transfer Example MSC 24 6. LLC

37、PDU FORMAT DEFINITION . 25 6.1 CONTROL PLANE (CP) LINK PDUS 25 6.1.1 CP_DATA . 25 6.1.2 CP_RES 25 6.2 USER PLANE (UP) LINK PDUS 26 6.2.1 UP_CONNECT. 26 6.2.2 UP_DISC 26 6.2.3 UP_DATA. 26 6.2.4 UP_ DATA_END 27 6.2.5 UP_BUNDLE .27 6.2.6 UP_ RES. 28 7. LLC INFORMATION ELEMENT DEFINITION 29 7.1 COMMON E

38、LEMENTS 29 7.1.1 ACK / NACK (A/N) . 29 7.1.2 ACK Request (AR) 29 7.1.3 FCS Present (F) 29 7.1.4 Frame Check Sequence (FCS) 29 7.1.5 LLC Format 31 7.1.6 Service Access Point (SAP). 31 7.1.7 Type 32 7.2 CONTROL PLANE SPECIFIC ELEMENTS. 33 7.2.1 Control PDU Length (CL) 33 7.2.2 Fragment Sequence Number

39、 Field (FSNF) 33 7.3 USER PLANE SPECIFIC ELEMENTS. 33 7.3.1 ACK Bitmap 33 7.3.2 Bitmap Size (BMS) 33 7.3.3 Bundle Header (BH). 34 7.3.4 Disconnect Type (DT). 34 7.3.5 Flow Control (RR) 34 7.3.6 Pad Octets (PAD) . 34 7.3.7 Response Code (RC). 35 7.3.8 Reconnect Flag (RF).35 7.3.9 Sent Segment Number

40、S(S) . 36 7.3.10 Service Data Unit (SDU) . 36 7.3.11 Service Data Unit (SDU) Segment. 36 7.4 USER PLANE NEGOTIATED PARAMETERS 36 7.4.1 UP Window Size (NL.200) 36 7.4.2 UP Number of Confirmed Retries (NL.201) . 36 7.4.3 UP MTU Size (NL.202). 36 7.4.4 UP Acknowledgement Timeout (TL.200) 37 7.4.5 UP Fl

41、ow Control Timeout (TL.201) . 37 7.4.6 UP Receive Timeout (TL.202) 37 8. REFERENCES 38 WAI LLC Layer Specification TIA-102.BAAE-A v Table of Figures FIGURE 1. GENERAL WIDEBAND DATA SYSTEM MODEL.1 FIGURE 2. CP LINK STATE TRANSITION DIAGRAM .8 FIGURE 3. EXAMPLE CP CONFIRMED SIGNALING TRANSFER MSC.12 F

42、IGURE 4. EXAMPLE CP UNCONFIRMED SIGNALING TRANSFER MSC .13 FIGURE 5. MRC UP LLC STATE TRANSITION DIAGRAM.14 FIGURE 6. FNE UP LLC STATE TRANSITION DIAGRAM14 FIGURE 7. EXAMPLE UP LINK CONNECTION MSC 17 FIGURE 8. EXAMPLE UP LINK RECONNECTION MSC18 FIGURE 9. EXAMPLE UP CONFIRMED DATA TRANSFER MSC22 FIGU

43、RE 10. EXAMPLE UP UNCONFIRMED DATA TRANSFER MSC.24 FIGURE 11. CP_ DATA PDU FORMAT .25 FIGURE 12. CP_ RES PDU FORMAT.25 FIGURE 13. UP_ CONNECT PDU FORMAT .26 FIGURE 14. UP_ DISC PDU FORMAT.26 FIGURE 15. UP_ DATA PDU FORMAT.26 FIGURE 16. UP_ DATA_END PDU FORMAT.27 FIGURE 17. UP_ BUNDLE PDU FORMAT27 FI

44、GURE 18. UP_RES PDU FORMAT28 TIA-902.BAAE-A WAI LLC Layer Specification vi List of Tables TABLE 1. LLC SERVICE PRIMITIVES . 4 TABLE 2. MAC/RLA SERVICE PRIMITIVES. 4 TABLE 3. MAPPING OF LLC LOGICAL LINKS AND SERVICES. 7 TABLE 4. CP LINK PARAMETER VALUES 9 TABLE 5. UP LINK PARAMETER VALUES . 16 TABLE

45、6. ACK REQUEST VALUES . 29 TABLE 7. LLC PDU ID DESCRIPTION 31 TABLE 8. SAP DEFINITIONS . 31 TABLE 9. A/N AND TYPE FIELD DEFINITIONS 32 TABLE 10. FSNF VALUES . 33 TABLE 11. BUNDLE HEADER DEFINITION 34 TABLE 12. DISCONNECT TYPE DEFINITION 34 TABLE 13. FLOW CONTROL DEFINITION 34 TABLE 14. RESPONSE CODE

46、S (RC) 35 TABLE 15. NL.202 VALUES. 36 TABLE 16. TL.200 VALUES. 37 TABLE 17. TL.201 VALUES. 37 TABLE 18. TL.202 VALUES. 37 TABLE 19. DATA SEGMENT SIZES FOR UP_DATA (FNE CONFIGURATIONS). 39 TABLE 20. DATA SEGMENT SIZES FOR UP_DATA_END (FNE CONFIGURATIONS). 39 TABLE 21. DATA SEGMENT SIZES FOR UP_DATA (

47、DIRECT CONFIGURATIONS) . 39 TABLE 22. DATA SEGMENT SIZES FOR UP_DATA_END (DIRECT CONFIGURATIONS). 39 DOCUMENT REVISION HISTORY Revision History Version Date Description V 0.25 4/5/2002 Initial draft submitted to TR-8.5 for review. V 0.90 6/6/2002 Second draft submitted for TR-8.5 review. V 0.95 6/18

48、/2002 Added PN-3-0081 for TIA ballot V 0.96 7/31/02 Updated with proposed ballot comment resolutions. V 0.97 8/2/02 Updated per 8/1/02 WB WG Teleconference discussion. V 1.0 8/30/02 Final edits for TIA publication Issue A 6/20/06 Proposed Updates per Open Issues Issue B 10/19/2006 Updated per TR-8.5

49、_2006_0021 comment resolutions, copy for Ballot Issue C 1/9/2007 Updated per TIA legal Ballot comments Issue D 1/25/2007 Final edits for TIA Publication WAI LLC Layer Specification TIA-902.BAAE-A 1 1. Scope The scope of this document is to define the logical link control layer, or LLC layer, of the wideband air interface (WAI). The wideband air interface called Uwis the interface between the fixed network equipment (FNE) and the subscriber units, or directly between subscriber units in a wideband system. The general wideband system model is shown in Figure 1 and illustrates the Radi