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22、4957.100 i Table of Contents 1 Foreword iv 2 1. Scope 1 3 2. References . 1 4 2.1. Normative references . 1 5 3. Definitions and Acronyms . 2 6 3.1. Definitions . 2 7 3.2. Acronyms 2 8 4. Overview . 3 9 4.1. Introduction to smart metering utility network (SUN) . 3 10 4.2. Physical layer (PHY) . 3 11
23、 4.3. General PHY requirements 3 12 4.3.1. General requirements and definitions . 3 13 4.3.2. Operating frequency range . 3 14 4.4. Channel numbering . 5 15 4.5. PHY constants 6 16 4.6. PHY PIB attributes 6 17 5. PHY specification . 8 18 5.1. PPDU format 8 19 5.1.1. Preamble field . 8 20 5.1.2. SFD
24、. 8 21 5.1.3. PHR 8 22 5.1.4. PSDU field . 8 23 5.2. Modulation and coding 9 24 5.2.1. Reference Modulator Diagram .10 25 5.2.2. Bit-to-symbol mapping 11 26 5.2.3. Forward error correction (FEC) 11 27 5.2.4. Coded-bit interleaving .12 28 5.3. Data whitening12 29 5.4. PHY RF requirements .13 30 5.4.1
25、. Regulatory compliance 13 31 5.4.2. Radio frequency and symbol rate tolerance .13 32 5.4.3. Channel switch time .13 33 5.4.4. Transmit spectral mask .13 34 5.4.5. Receiver sensitivity .13 35 5.4.6. Tx-to-Rx turnaround time 13 36 5.4.7. Rx-to-Tx turnaround time 13 37 6. Examples of encoding a Layer
26、1 packet . 14 38 6.1. Introduction 14 39 6.2. Baseline Scenario .14 40 6.2.1. Settings.14 41 6.2.2. Generation of the SHR 14 42 6.2.3. Generation of the PHR 14 43 6.2.4. Bit sequence after data whitening of the PSDU and PHR concatenation .15 44 6.2.5. Concatenating the SHR with the PHR and PSDU .15
27、45 6.3. Coded Scenario .15 46 6.3.1. Settings.15 47 6.3.2. Generation of the SHR 15 48 6.3.3. Generation of the PHR 15 49 6.3.4. Concatenating the PHR, PSDU, tail bits, and pad bits 15 50 6.3.5. Encoding of the bit sequence .15 51 6.3.6. Bit sequence after data whitening of the PSDU 16 52 6.3.7. Con
28、catenating the SHR with the PHR and PSDU .16 53 6.4. 4FSK Coded Scenario 16 54 6.4.1. Settings.16 55 6.4.2. Generation of the SHR 16 56 ANSI/TIA-PN4957.100 ii A2 - Reference to IEEE802.15.4g-2012 TM6.4.3. Generation of the PHR 16 1 6.4.4. Concatenating the PHR, PSDU, tail bits, and pad bits 16 2 6.4
29、.5. Encoding of the bit sequence .16 3 6.4.6. Interleaving of the bit sequence 16 4 6.4.7. Bit sequence after data whitening of the PSDU 17 5 6.4.8. Concatenating the SHR with the PHR and PSDU .17 6 7 8 9 10 ANSI/TIA-PN4957.100 iii A2 - Reference to IEEE802.15.4g-2012 TMList of Figures 1 Figure 1 -
30、Format of the PHR 8 2 Figure 2 - Reference Modulator Diagram 11 3 Figure 3 - Extension with tail bits prior to encoding . 11 4 5 6 7 List of Tables 8 Table 1 - High data rate operating modes and frequency bands 3 9 Table 2 - Operating modes in the 2400-2483.5 MHz frequency band 4 10 Table 3 - Operat
31、ing modes in the Japanese bands . 4 11 Table 4 - Low data rate operating modes and frequency bands 4 12 Table 5 - Channel spacing, total number of channels, and first channel center frequencies for high 13 data rate modes 5 14 Table 6 - Channel spacing, total number of channels and first channel cen
32、ter frequencies for low 15 data rate modes 5 16 Table 7 - Channel spacing, total number of channels and first channel center frequencies for the 17 2400-2483.5 MHz frequency band 5 18 Table 8 - Channel spacing, total number of channels and first channel center frequencies for the 19 Japanese bands 6
33、 20 Table 9 - PHY PIB attributes . 6 21 Table 10 - Parameters for high data rate modes 9 22 Table 11 - Parameters for modes in the 2400-2483.5 MHz frequency band . 9 23 Table 12 - Parameters for modes in the Japanese bands 10 24 Table 13 - Parameters for low data rate modes 10 25 Table 14 - Scenario
34、s . 14 26 Table 15 - PHR for Baseline Scenario . 14 27 28 ANSI/TIA-PN4957.100 iv A2 - Reference to IEEE802.15.4g-2012 TMForeword (This foreword is not part of this standard) 1 This document is a TIA Telecommunications Standard produced by the Layer 1 Working Group of 2 the TR51 Committee. The standa
35、rd was produced in accordance with TIA procedural guidelines, 3 and represents the consensus of the Working Group and its parent committee which served as the 4 formulating group. 5 The standard is derived from the IEEE 802.15.4g-2012TMPHY amendment, with modifications for 6 improved interoperabilit
36、y and consistency. 7 To obtain a copy of IEEE 802.15.4-2011TMor IEEE 802.15.4g-2012TM, contact: 8 IEEE Operations Center 9 445 Hoes Lane 10 Piscataway, NJ 08854-4141 USA 11 Phone: +1 732 981 0060 12 13 The TR51 Layer 1 group officers wish to acknowledge the contributions and support of the 14 follow
37、ing TR51 members in the preparation of this standard: 15 Organization Representatives TIA-TR51 MJLynch & Associates Mike Lynch TR51 Chair Analog Devices Jeritt Kent Participant Beecher Communications Phil Beecher Participant Blind Creek Consulting Ben Rolfe Participant DTC (UK) Larry Taylor Particip
38、ant Ericsson Octavio Lima Participant NICT Hiroshi Harada Fumihide Kojima Chin Sean Sum Participant Proto6 Geoff Mulligan Participant Silver Spring Networks Thomas Herbst Jay Ramasastry Cristina Seibert Kunal Shah (Editor) Participant SUNA John Notor Participant 16 Comments, corrections or requests
39、for enhancement should be addressed to: 17 Telecommunications Industry Association 18 1320 N. Courthouse Road, Suite 200 19 Arlington, VA 22201, USA 20 (http:/www.tiaonline.org) 21 ANSI/TIA-PN4957.100 1 1 1. Scope 2 This is the first part of a multi-part standard specification for the Smart Utility
40、Network. This first 3 part covers OSI Layer 1 (the physical layer). It is derived from the IEEE 802.15.4g-2012TMPHY 4 amendment (see 2.1), with modifications for improved interoperability and consistency. 5 6 2. References 7 2.1. Normative references 8 A1 IEEE 802.15.4-2011TM- IEEE Standard for Loca
41、l and metropolitan area 9 networks-Part 15.4: Low-Rate Wireless Personal Area Networks (LR-WPANs) 10 A2 IEEE 802.15.4g-2012TM- IEEE Standard for Local and metropolitan area 11 networks-Part 15.4: Low-Rate Wireless Personal Area Networks (WPANs) 12 Amendment 3: Physical Layer Specifications for Low D
42、ata Rate, Wireless, Smart 13 Metering Utility Networks 14 15 ANSI/TIA-PN4957.100 2 A2 - Reference to IEEE802.15.4g-2012 TM3. Definitions and Acronyms 1 3.1. Definitions 2 Packet: The formatted, aggregated bits that are transmitted together in time across the physical 3 medium. 4 Operating mode: A se
43、t of physical layer parameters that fully describes the characteristics of a 5 transmitted signal, such that two devices implementing this set of parameters may successfully 6 exchange packets. 7 Receiver Sensitivity: Lowest signal level required to meet the specified performance under 8 specified c
44、onditions. 9 Smart metering utility network (SUN): A principally outdoor, low data rate wireless network that 10 supports two-way communications among sensing, measurement, and control devices in the smart 11 grid. 12 Smart metering utility network (SUN) device: An entity containing the physical lay
45、er specified 13 in section 5 of this document. 14 3.2. Acronyms 15 2FSK Two-level FSK 16 4FSK Four-level FSK 17 FEC Forward Error Correction 18 FSK Frequency Shift Keying 19 PER Packet error rate 20 PHR PHY Header 21 PHY Physical layer 22 PIB PHY information base 23 PSDU PHY Service Data Unit 24 PPD
46、U PHY Protocol Data Unit 25 RF Radio frequency 26 RSC Recursive and Systematic Code 27 RX Receive or Receiver 28 SHR Synchronization Header 29 SFD Start-of-Frame Delimiter 30 TX Transmit or Transmitter 31 32 ANSI/TIA-PN4957.100 3 A2 - Reference to IEEE802.15.4g-2012 TM4. Overview 1 4.1. Introduction
47、 to smart metering utility network (SUN) 2 SUNs enable multiple applications to operate over shared network resources, providing monitoring 3 and control of a utility system. SUN devices are designed to operate in very large-scale, low power 4 wireless applications and often require using the maximu
48、m power available under applicable 5 regulations, in order to provide long-range, point-to-point connections. Frequently, SUNs are 6 required to cover geographically widespread areas containing a large number of outdoor devices. In 7 these cases, SUN devices may employ mesh or peer-to-peer multihop
49、techniques to communicate 8 with an access point. 9 4.2. Physical layer (PHY) 10 The PHY provides two services: the PHY data service and the PHY management service. The PHY 11 data service enables the transmission and reception of PHY protocol data units (PPDUs) across the 12 physical radio channel. 13 4.3. General PHY requirements 14 4.3.1. General requirements and definitions 15 The PHY is responsible for packet transmission and reception according to the requirements of this 16 standard. 17 4.3.2. Operating frequency range 18 A compliant device shall
