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21、OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE)
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23、 iv 2 1 Introduction 1 3 1.1 Scope and Purpose . 1 4 1.2 Release History . 1 5 2 References . 2 6 2.1 IEEE . 2 7 2.2 ANSI/TIA 2 8 3 Definitions 3 9 3.1 Definitions 3 10 3.2 Acronyms . 3 11 4 Overview & Architecture 5 12 4.1 Architecture 5 13 4.2 Overview 6 14 4.3 Addressing . 8 15 4.4 Protocol Ident
24、ifier . 8 16 4.5 Multi-Hop Delivery . 8 17 4.5.1 Sequence Numbers . 8 18 4.5.2 Broadcast and Multicast MHD-PDUs 9 19 4.5.3 Neighbors 9 20 4.5.4 Routes . 9 21 4.6 RAMP 10 22 4.6.1 Service Announcement . 11 23 4.6.2 Service Registration 11 24 4.6.3 Route Maintenance . 12 25 4.6.4 Loops . 13 26 4.6.5 T
25、imers . 13 27 4.6.6 Link Cost . 14 28 4.6.7 Link Quality 14 29 5 Data Structures 15 30 5.1 Representation Order 15 31 5.2 MHD-PDU Format . 15 32 5.2.1 MHD-HDR . 15 33 5.2.2 MHD-Control . 15 34 5.2.3 Address List . 16 35 5.2.4 MHD-PDU Data . 17 36 5.3 RAMP Data Elements 18 37 5.3.1 Route Announcement
26、 (RTA) Data Element 18 38 5.3.2 Service Registration (SREG) Data Element 19 39 5.3.3 SREG Acknowledgement (SREG-ACK) Data Element . 20 40 5.3.4 SREG Negative Acknowledgement (SREG-NACK) Data Element . 20 41 5.3.5 Route Announcement Request (RTA-REQ) Data Element . 20 42 5.3.6 Route Removal (RTR) Dat
27、a Element 20 43 ANSI/TIA-PN-4957.210a II 6 Data Link Service Access Points . 22 1 6.1 Data Link Data Interface (D-DATA) . 22 2 6.1.1 D-DATA.request 22 3 6.1.2 D-DATA.confirm 22 4 6.1.3 D-DATA.indication . 23 5 6.2 Data Link Layer Management Service Access Point (DLM-DATA) . 23 6 6.2.1 DLM-Data.reque
28、st . 24 7 6.2.2 DLM-DATA.confirm . 28 8 6.2.3 DLM-DATA_indication . 29 9 6.3 Data Link Layer Parameters & Constants . 29 10 7 Multi-Hop Delivery Sub-Layer Functional Specification . 31 11 7.1 General Purpose Data Link Procedures 31 12 7.1.1 Construct a MHD-HDR 31 13 7.2 Forwarding a MHD-PDU 32 14 7.
29、3 MHD-PDU Reception Procedure . 33 15 7.4 MHD-PDU Transmission Procedure 34 16 8 RAMP Protocol 36 17 8.1 Local Broadcast . 36 18 8.2 Periodic RAMP Actions 37 19 8.3 Route Information Update 37 20 8.4 Generation of a RTA Data Element . 38 21 8.5 Generation of a RTR MHD-PDU 38 22 8.6 Generation of a S
30、REG MHD-PDU . 38 23 8.7 Generation of a SREG-ACK MHD-PDU 39 24 8.8 Generation of a SREG-NACK MHD-PDU 39 25 8.9 Generation of a RTA-REQ MHD-PDU . 40 26 8.10 RAMP Reception Procedure 40 27 8.10.1 RTA Data Element 40 28 8.10.2 SREG Data Element . 41 29 8.10.3 SREG_ACK Data Element 42 30 8.10.4 SREG-NAC
31、K Data Element 42 31 8.10.5 RTA-REQ Data Element . 43 32 8.10.6 RTR Data Element 44 33 8.11 RAMP Transmission Procedure 44 34 8.11.1 Route Announcement 44 35 8.11.2 Route Removal 46 36 8.11.3 Service Registration 46 37 8.11.4 Service Registration Response . 46 38 8.11.5 Service Registration Negative
32、 Response 47 39 8.11.6 Route Announcement Request . 47 40 41 42 ANSI/TIA-PN-4957.210a iii Table of Figures 1 Figure 1 Multi-Hop Delivery Service Communications Model . 5 2 Figure 2: Multi-Hop Delivery Architecture 6 3 Figure 3: Multi-hop Data Link Delivery 6 4 Figure 4: RAMP Entities 7 5 Figure 5: G
33、eneral MHD-PDU Format 15 6 Figure 6 MHD-HDR Format . 15 7 Figure 7 MHD-Control Field Format 15 8 Figure 8: MHD-HDR Protocol Field Values . 16 9 Figure 9: Address List Field Format 16 10 Figure 10: Normal Variant MHD-PDU Data Field Format . 17 11 Figure 11: Vendor Specific Protocol MHD-PDU Data Forma
34、t . 17 12 Figure 12: Data Element Format . 17 13 Figure 13: Data Element Type Field Values 17 14 Figure 14: Sequence Number Data Element Format 18 15 Figure 15 : RAMP Data Element Format . 18 16 Figure 16 : RAMP Data Element ID Field Values 18 17 Figure 17 : RTA Data Element Format 18 18 Figure 18 :
35、 SREG Data Element Format . 19 19 Figure 19: Upstream Neighbor Descriptor . 19 20 Figure 20 : SREG-ACK Data Element Format 20 21 Figure 21 : SREG-NACK Data Element Format 20 22 Figure 22 : RTA-REQ Data Element Format . 20 23 Figure 23 : RTR Data Element Format 20 24 Figure 24: D-Data.request Paramet
36、ers . 22 25 Figure 25: D-Data.confirm Parameters . 23 26 Figure 26: D-Data.indication Parameters 23 27 Figure 27: DLM-Data.request Parameters 24 28 Figure 28: DLM-Data.request Parameters for RAMP 24 29 Figure 29: RAMP RTA Request Parameters . 25 30 Figure 30: RAMP Route Removal Request Parameters .
37、26 31 Figure 31: RAMP Service Registration Request Parameters 26 32 Figure 32: RAMP Service Registration Response Request Parameters 27 33 Figure 33: RAMP Negative Service Registration Response Request Parameters . 28 34 Figure 34: RAMP Route Announcement Request Parameters . 28 35 Figure 35: DLM-Da
38、ta.confirm Parameters 28 36 Figure 36: DLM-Data.indication Parameters . 29 37 Figure 37: Data Link Layer Parameters & Constants 30 38 39 ANSI/TIA-PN-4957.210a IV Foreword (This foreword is not part of this standard) 1 This document is a TIA Telecommunications Standard produced by the Working Group o
39、f the 2 TR51 Committee. The standard was produced in accordance with TIA procedural guidelines, 3 and represents the consensus of the Working Group and its parent committee which served 4 as the formulating group. 5 6 The standard consists of 5 clauses. The normative Overview and Architecture clause
40、 7 describes the principles and intended operation of an implementation of the standard. The 8 normative Data Structures clause defines the encoding and data structures used to represent 9 information. The Service Access Points clause provides data and management interface 10 definitions together wi
41、th a set of parameters. The Service Access Point clause is informative 11 since it is implementation specific but is referenced in the description of parts of the normative 12 Functional Specification clause. The Functional Specification clause describes procedures to 13 be executed by an implementa
42、tion of the standard and is normative. The normative RAMP 14 protocol clause describes the procedures to be used in implementing the multi-hop functions 15 defined in this specification although other protocols may also be used to provide multi-hop 16 delivery management. 17 The TR51 Layer 2 group o
43、fficers wish to acknowledge the contributions and support of the 18 following TR51 members in the preparation of this standard: 19 20 4957 Series Revision Contributor Company / Representing Kramarikova, Marianna TIA Sturek, Don Silver Spring Networks Lynch, Michael MJ Lynch & Associates, LLC Heile,
44、Bob Wi-SUN Alliance Notor, John Notor Research Kent, Jeritt Analog Devices, Inc. Beecher, Phil Wi-SUN Alliance Lima, Octavio SUNA Stuebing, Gary Cisco Shah, Kunal Silver Spring Networks Kent, Jeritt Analog Devices Sum, Chin Sean Wi-SUN Alliance 21 Comments, corrections or requests for enhancement sh
45、ould be addressed to: 22 Telecommunications Industry Association 23 1320 N. Court House Road Suite 200 24 Arlington, VA 22201 25 (http:/www.tiaonline.org) 26 ANSI/TIA-PN-4957.210a 1 1 Introduction 1 1.1 Scope and Purpose 2 This document defines a Forwarding sub-layer protocol and a Routing sub-layer
46、 protocol for 3 the Data Link layer of TR51, including processes, functions, service interfaces and externally 4 visible frame formats. The Forwarding protocol provides data transfer services between non-5 neighboring devices. The Routing protocol provides discovery and maintenance of multi-hop 6 ro
47、utes between certain non-neighboring devices. 7 8 1.2 Release History 9 10 Date Version Author Comments 15 May 2016 0v01-RC1 Chin-Sean Sum Revised based on 4957.210 with no technical content changes 21 Oct. 2016 0v02-RC4 Chin-Sean Sum Added list of contributors Editorial touch-up 22 April 2017 0v03-
48、RC1 Chin-Sean Sum Editorial touch-up addressing comments from TIA Publications 11 May 2017 0v03-RC2 Chin-Sean Sum Editorial touch-up addressing comments from TIA Publications 19 June 2017 0v03-RC3 Kunal Shah Editorial touch-up addressing comments from TIA Publications 29 June 2017 0v03-RC3 Kunal Sha
49、h Editorial touch-up addressing comments from TIA Publications 11 ANSI/TIA-PN-4957.210a 2 2 References 1 2 REGAUTH IEEE Standards Association Registration Authority, 3 http:/standards.ieee.org/develop/regauth/ 4 EUI64 IEEE-Standards Association Guidelines for 64-bit Global Identifier 5 (EUI-64), http:/standards.ieee.org/develop/regauth/tut/eui64.pdf 6 OSIRM ITU X.200 / ISO/IEC 7498-1 OSI Basic Reference Model 7 8 2.1 IEEE 9 IEEE802.15.4-2011 “IEEE Std 802.15.4-2011 IEEE Standard for Local and metropolitan 10 area networksPart 15.4: Low-Rate Wireless Personal Area 11 Net
