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22、N4957.200 i TR-51 MAC Sub-Layer Contents TR-51 MAC SUB-LAYER .I FOREWARD. V 1 INTRODUCTION1 1.1 SCOPE AND PURPOSE.1 1.2 RELEASE HISTORY.1 2 REFERENCES.2 2.1 NORMATIVE REFERENCES.2 2.2 INFORMATIVE REFERENCES.2 3 DEFINITIONS3 3.1 DEFINITIONS3 3.2 ACRONYMS3 4 OVERVIEW & ARCHITECTURE.4 4.1 ARCHITECTURE.
23、4 4.2 OVERVIEW.4 4.3 ADDRESSING5 4.3.1 Node Address5 4.3.2 Broadcast Address.5 4.3.3 Multicast Addresses5 4.4 THE CHANNEL FUNCTION.6 4.5 COMMUNICATIONS LINK6 4.6 DATA TRANSFER SERVICES7 4.6.1 Unicast data service8 4.6.2 Beacon data service9 4.6.3 Broadcast data service9 4.6.4 Multicast data service.
24、9 4.6.5 Collision avoidance9 4.7 INFORMATION ENCAPSULATION.10 4.8 SYNCHRONIZATION10 4.8.1 Frame Reference Time10 4.8.2 Beacon synchronization10 4.9 NODE ANNOUNCEMENT AND NEIGHBOR DISCOVERY SERVICE.10 4.10 POWER SAVING11 4.11 OPERATING CLASS SWITCHING12 5 DATA STRUCTURES 13 5.1 REPRESENTATION ORDER.1
25、3 5.2 MAC FRAME FORMAT.13 5.3 MAC HEADER13 5.3.1 Frame Control Field.13 5.3.1.1 Frame ID13 5.3.1.2 Frame ID Extension.13 5.3.1.3 Addressing Mode fields.13 5.3.1.4 Version Field14 5.3.2 Destination Address Field14 ANSI/TIA-PN4957.200 ii 5.3.3 Source Address Field.14 5.3.4 Frame check sequence14 5.4 I
26、NFORMATION ELEMENTS (IES).14 5.4.1 Short Information Elements15 5.4.1.1 Fractional Sequence Interval (FSI) IE.15 5.4.1.2 Fractional Dwell Interval (FDI) IE.16 5.4.1.3 Node Announcement (NA) IE16 5.4.1.4 Flow Control (FC) IE.17 5.4.1.5 Power Saving (PS) IE18 5.4.1.6 Rendezvous (RDV) IE.18 5.4.1.7 Ope
27、rating Class Switching (OCS) IE.18 5.4.1.8 Probe IE.19 5.4.1.9 Vendor Specific Short (VSS) IE.19 5.4.2 Long Information Elements.19 5.4.2.1 Encapsulated MSDU (EMSDU) IE.19 5.4.2.2 MAC Layer Management (MLM) IE.20 5.4.2.3 Fragment IE.20 5.4.2.4 Vendor Specific Long (VSL) IE.20 6 MAC SERVICE ACCESS PO
28、INTS21 6.1 MAC DATA INTERFACE (M-DATA).21 6.1.1 M-DATA.request21 6.1.2 M-DATA.confirm.21 6.1.3 M-DATA.indication22 6.2 MAC LAYER MANAGEMENT CONTROL INTERFACE (MLM-CONTROL)22 6.2.1 MLM-CONTROL.request22 6.2.2 MLM-CONTROL.confirm23 6.3 MAC SUB-LAYER INFORMATION ATTRIBUTES 23 7 MAC SUB-LAYER FUNCTIONAL
29、 SPECIFICATION.24 7.1 CHANNEL FUNCTION.24 7.2 FRAME TRANSFER.24 7.2.1 Frame Processing24 7.2.2 Sequence Numbers24 7.3 INFORMATION ELEMENTS.24 7.3.1 Fractional Sequence Interval IE.24 7.3.2 Fractional Dwell Interval IE.25 7.3.3 Flow Control (LC) IE.25 7.3.4 Power Saving (PS) IE25 7.3.5 Rendezvous (RD
30、V) IE.25 7.3.6 Operating Class Switching IE.26 7.3.7 EMSDU IE26 7.3.8 EMLME IE27 7.3.9 Node Announcement IE.27 7.3.10 Probe IE.27 7.3.11 Vendor Specific IE28 7.4 DATA TRANSFER SERVICES28 7.4.1 Aggregation and Fragmentation28 7.4.2 Re-Assembly29 7.4.3 Re-transmission.30 7.4.4 Unicast Data Service.30
31、7.4.4.1 Instantiation of the Communications Link32 7.4.4.2 Termination of the Communications Link.32 7.4.4.3 Conclusion of the Communications Link.32 7.4.4.4 Unicast Transmission32 7.4.4.4.1 Initial Frame Transmission.32 ANSI/TIA-PN4957.200 iii 7.4.4.4.2 Subsequent Frame Transmission.33 7.4.4.5 Unic
32、ast Reception.34 7.4.4.5.1 Initial Frame Reception34 7.4.4.5.2 Subsequent Frame Reception Fragment IE.35 7.4.4.5.3 Subsequent Frame Reception No Fragment IE.35 7.4.4.5.4 Subsequent Frame Reception35 7.4.5 Beacon Data Service36 7.4.6 Broadcast Data Service.36 7.4.6.1 Busy Channel Deferral.37 7.4.7 Mu
33、lticast Data Service37 Annex A. (Normative) Operating Class39 A.1 Regulatory Domain39 A.2 Global Operating Class.39 A.3 US Operating Class.40 A.4 Japan Operating Class41 A.5 Europe Operating Class41 Annex B. (Normative) Channel Table42 Table of Figures Figure 1: Functional Architecture4 Figure 2: OS
34、I Communications Model5 Figure 3: Multicast Address Format 6 Figure 4: The Communications Link.7 Figure 5: Unicast Data Service 8 Figure 6: Slotted CSMA 10 Figure 7: Power Saving Operation.11 Figure 8: General MAC Frame Format .13 Figure 9: Frame Control Field .13 Figure 10: Addressing Mode Field Va
35、lues 14 Figure 11: Short IE Format14 Figure 12: Long IE Format 15 Figure 13: Information Element Summary 15 Figure 14: FSI IE Format.16 Figure 15: FDI IE Format 16 Figure 16: NA IE Format (Note DI follows Fractional Sequence Time).16 Figure 17: FC IE Format17 Figure 18: PS IE Format 18 Figure 19: RD
36、V IE Format 18 Figure 20: OCS IE Format.18 Figure 21: Probe IE Format .19 Figure 22: VSS IE Format .19 Figure 23: EMSDU IE Format.19 Figure 24: Nested IE long form .20 Figure 25: Fragment IE Format 20 Figure 26: FST IE Format20 Figure 27: M-DATA.request Parameters.21 Figure 28: M-DATA.confirm Parame
37、ters21 Figure 29: M-DATA.indication Parameters 22 Figure 30: MLM-CONTROL.request Parameters .22 Figure 31: MLM-CONTROL.confirm Paramters23 Figure 32: Attribute Definitions 23 Figure 33: First Fragment IE Format.28 Figure 34: Intermediate Fragment IE Format 28 ANSI/TIA-PN4957.200 ivFigure 36: Unicast
38、 Data Service State Transition Diagram .31 Figure 37 Unicast Data Service First Frame Format .33 Figure 38: Subsequent Transmitted Frame Format33 Figure 39: Initial Frame Response Frame Format .34 Figure 40: Beacon Frame Format 36 Figure 41: Broadcast Data Service Frame Format.36 Figure 42: Multicas
39、t Data Service Frame Format37 ANSI/TIA-PN4957.200 vi Foreward (This foreword is not part of this standard) This document is a TIA Telecommunications Standard produced by the Layer 2 Working Group of the TR51 Committee. The standard was produced in accordance with TIA procedural guidelines, and repre
40、sents the consensus of the Working Group and its parent committee which served as the formulating group. The standard consists of 4 clauses and 2 annexes. The normative Overview and Architecture clause describes the principles and intended operation of an implementation of the standard. The normativ
41、e Data Structures clause defines the encoding and data structures used to represent information. The Service Access Points clause provides data and management interface definitions together with a set of parameters. The Service Access Point clause is informative since it is implementation specific b
42、ut is referenced in the description of parts of the normative Functional Specification clause. The Functional Specification clause describes procedures to be executed by an implementation of the standard and is normative. Annex A contains the encoding of the regulatory domain and operating classes a
43、nd is normative. Annex B defines the algorithm for the construction of the channel table and is normative. The TR51 Layer 2 group officers wish to acknowledge the contributions and support of the following TR51 members in the preparation of this standard: Organization Representatives TIA-TR51 MJLync
44、h & Associates Mike Lynch TR51 Chair Beecher Communications Phil Beecher Layer 2 Chair Analog Devices, Inc. Jeritt Kent Participant Blind Creek Consulting Ben Rolfe Participant DTC (UK) Larry Taylor Editor Ericsson Octavio Lima ParticipantNICT Fumihide Kojima Chin Sean Sum Participant Proto6 Geoff M
45、ulligan ParticipantSilver Spring Networks Thomas Herbst Jay Ramasastry Will San Filippo Cristina Siebert Kunal Shah Participant SUNA John Notor Participant Comments, corrections or requests for enhancement should be addressed to: Telecommunications Industry Association Suite 300 250 Wilson Boulevard
46、 Arlington, VA 22201 (http:/www.tialonine.org) ANSI/TIA-PN4957.200 1 1 Introduction 1.1 Scope and Purpose This specification defines a Medium Access & Control (MAC) sub-layer of the Data Link Layer for Smart Utility Networks (SUN). It defines frame and information structures and encoding, neighbor d
47、iscovery and information transfer services for unicast, beacon, broadcast and multicast data services. 1.2 Release History to be included when the standard is released and updated thereafter with each release Date Version Author Comments ANSI/TIA-PN4957.200 2 2 References 2.1 Normative References Th
48、e following are referenced in this proposal: 1 ANSI/TIA-4957.100 Layer 1 Standard Specification for the Smart Utility Network 2.2 Informative References The following are referenced in this proposal: 2 IEEE Standards Association Registration Authority, http:/standards.ieee.org/develop/regauth/ 3 IEE
49、E-Standards Association Guidelines for 64-bit Global Identifier (EUI-64), http:/standards.ieee.org/develop/regauth/tut/eui64.pdf 4 IEEE-Standards Association Standard Group MAC Addresses: A Tutorial Guide, http:/standards.ieee.org/develop/regauth/tut/macgrp.pdf 5 IEEE Std 802.15.4e-2012 IEEE Standard for Local and metropolitan area networksPart 15.4: Low-Rate Wireless Networks (LR-WPANs), Amendment 1: MAC sublayer ANSI/TIA-PN4957.200 3 3 Definitions 3.1 Definitions Communications Link Logical path between two entities over which information is exchanged Directed F
