1、 TIA-4957.400 February 2013Layer 4 Standard Specification for the Smart Utility Network ANSI/TIA-4957.400-2013 APPROVED: FEBRUARY 12, 2013 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purch
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22、tents 1 Introduction . - 1 - 2 1.1 Scope and Purpose . - 1 - 3 1.2 Release History - 1 - 4 2 References . - 2 - 5 2.1 Normative References - 2 - 6 2.2 Informative References - 2 - 7 3 Definitions . - 3 - 8 3.1 Definitions . - 3 - 9 3.2 Acronyms . - 3 - 10 4 Overview . - 4 - 11 4.1 Transport Layer Pr
23、ofile - 4 - 12 4.2 Use of Network Data Service - 4 - 13 4.3 Data Structures . - 4 - 14 4.4 Transport Service . - 4 - 15 Table of Figures 16 Figure 1 Transport Layer Profile Communications Model . - 4 - 17 18 19 ANSI/TIA-PN-4957.400 iii 1 Foreword (This foreword is not part of this standard) 2 This d
24、ocument is a TIA Telecommunications Standard produced by the Layer 4 Working Group of the TR51 Committee. 3 The standard was produced in accordance with TIA procedural guidelines, and represents the consensus of the Working 4 Group and its parent committee which served as the formulating group. 5 Th
25、e standard consists of 1 clause. The normative Overview clause describes the principles and intended operation of an 6 implementation of the standard. No specific data structures or functional procedures are defined and this standard is 7 therefore a profile of external standards to be used over the
26、 TR51 Network Layer. 8 The TR51 Layer 4 group officers wish to acknowledge the contributions and support of the following TR51 members in the 9 preparation of this standard: 10 Organization Representatives TIA-TR51 MJLynch & Associates Mike Lynch TR51 Chair Beecher Communications Phil Beecher Vice C
27、hair 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 Mulligan ParticipantSilver Spring Networks Thomas Herbst Participant SUNA John Noto
28、r Participant11 Comments, corrections or requests for enhancement should be addressed to: 12 Telecommunications Industry Association 13 Suite 200 14 1320 N. Courthouse Road 15 Arlington, VA 22201 16 (http:/www.tiaonline.org) 17 18 ANSI/TIA-PN-4957.400 - 1 - Introduction 1 1.1 Scope and Purpose 2 Thi
29、s document defines a Transport Layer profile for ANSI/TIA-PN-4957 Smart Utility Networks 3 1.2 Release History 4 to be included when the standard is released and updated thereafter with each release 5 Date Version Author Comments 6 ANSI/TIA-PN-4957.400 - 2 -2 References 1 2.1 Normative References 2
30、The following are referenced in this proposal: 3 1 ANSI/TIAPN4957.300 TR51 Network Layer Specification 4 2 RFC 768 User Datagram Protocol, August 1980, IETF Trust 5 3 RFC 793 Transmission Control Protocol, September 1981, IETF Trust 6 2.2 Informative References 7 The following are referenced in this
31、 proposal: 8 4 ITU X.200 / ISO/IEC 74981 OSI Basic Reference Model 9 5 RFC 2460 Internet Protocol, Version 6 (IPv6) Specification, December 1998, IETF Trust 10 11 ANSI/TIA-PN-4957.400 - 3 - 3 Definitions 1 3.1 Definitions 2 None 3 3.2 Acronyms 4 IPv6 Internet Protocol Version 6 5 TCP Transmission Co
32、ntrol Protocol 6 UDP User Datagram Protocol 7 8 ANSI/TIA-PN-4957.400 - 4 -4 Overview 1 This specification uses the notions of Layer and Service as defined in 4 and defines a Transport Layer profile which uses 2 the underlying services of the ANSI/TIA-PN-4957.300 Network Service 1, as shown in Figure
33、 1. 3 4 Figure 1 Transport Layer Profile Communications Model 5 The Transport Layer profile assumes that services provided by the Network Layer include: 6 o A packet delivery service to nodes addressed by IPv6 addresses (see 5) 7 The Transport Layer profile provides a data transfer service to the Ap
34、plication Layer including: 8 o Best efforts datagram delivery 9 o Reliable data delivery 10 4.1 Transport Layer Profile 11 Noting that: 12 ANSI/TIA-PN-4957.300 defines a Network Layer profile for Smart Utility Networks 13 This specification adopts a Transport Layer Profile as defined in: 14 RFC 768
35、for unacknowledged datagram delivery 2 15 RFC 793 for acknowledged, reliable data delivery 3. 16 4.2 Use of Network Data Service 17 No specific requirements are defined in this specification for the use of the Network data service by the Transport Layer. 18 4.3 Data Structures 19 No specific data st
36、ructures or constants are defined in this specification. 20 4.4 Transport Service 21 No specific Service Access Points are defined in this specification. 22 23 24 ANSI/TIA-PN-4957.400 THE TELECOMMUNICATIONS INDUSTRY ASSOCIATION TIA represents the global information and communications technology (ICT
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