ISO/IEC 14543-3-10:2020
(Main)Information technology - Home electronic system (HES) architecture - Part 3-10: Amplitude modulated wireless short-packet (AMWSP) protocol optimized for energy harvesting - Architecture and lower layer protocols
Information technology - Home electronic system (HES) architecture - Part 3-10: Amplitude modulated wireless short-packet (AMWSP) protocol optimized for energy harvesting - Architecture and lower layer protocols
ISO/IEC 14543-3-10:2020(E) specifies a wireless protocol for low-powered devices such as energy harvesting devices in a home environment. This wireless protocol is specifically designed to keep the energy consumption of such sensors and switches extremely low. The design is characterized by • keeping the communications very short, infrequent and mostly unidirectional, and • using communication frequencies that provide a good range even at low transmit power and avoid collisions from disturbers. This allows the use of small and low-cost energy harvesting devices that can compete with similar battery-powered devices. The messages sent by energy harvesting devices are received and processed mainly by line-powered devices such as relay switch actuators, repeaters or gateways. Together these form part of a home automation system, which, when conforming to ISO/IEC 14543 (all parts), is defined as a home electronic system. This document specifies OSI Layers 1 to 3 of the amplitude modulated wireless short-packet (AMWSP) protocols. The AMWSP protocol system consists of two and optionally three types of components that are specified in this document. These are the transmitter, the receiver and optionally the repeater. Repeaters are needed when the transmitter and the receiver are located in such a way that no good direct communication between them can be established. Protection against malicious attacks is handled in the upper layers and thus not treated in this document.
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ISO/IEC 14543-3-10
Edition 2.0 2020-03
INTERNATIONAL
STANDARD
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Information technology – Home electronic system (HES) architecture –
Part 3-10: Amplitude modulated wireless short-packet (AMWSP) protocol
optimized for energy harvesting – Architecture and lower layer protocols
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ISO/IEC 14543-3-10
Edition 2.0 2020-03
INTERNATIONAL
STANDARD
Information technology – Home electronic system (HES) architecture –
Part 3-10: Amplitude modulated wireless short-packet (AMWSP) protocol
optimized for energy harvesting – Architecture and lower layer protocols
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.240.67 ISBN 978-2-8322-7979-3
– 2 – ISO/IEC 14543-3-10:2020 © ISO/IEC 2020
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 13
4 Conformance . 13
5 Architecture . 13
5.1 Generic protocol description . 13
5.1.1 Overview . 13
5.1.2 Physical layer . 14
5.1.3 Data link layer . 14
5.1.4 Network layer . 14
5.1.5 Transport layer . 15
5.1.6 Session layer . 15
5.1.7 Presentation layer . 15
5.1.8 Application layer . 15
5.2 Data unit description . 15
6 Layer 1 – Physical layer . 16
6.1 Overview. 16
6.2 General description . 16
6.3 Requirements for the 315 MHz AMWSP protocol . 18
6.4 Requirements for the 868,3 MHz AMWSP protocol. 21
6.5 Frame structure . 23
7 Layer 2 – Data link layer . 25
7.1 Overview. 25
7.2 Subtelegram timing . 25
7.3 Data integrity . 26
7.3.1 General . 26
7.3.2 4 bit summation hash function algorithm . 27
7.3.3 8 bit summation hash function algorithm . 27
7.3.4 8 bit cyclic redundancy check (CRC) hash function algorithm . 27
7.4 Listen before talk . 28
8 Layer 3 – Network layer . 28
8.1 Overview. 28
8.2 Switch telegram . 28
8.3 Repeater . 29
8.3.1 General . 29
8.3.2 Time response for collision avoidance . 29
8.3.3 Bits of a repeater level in the STATUS byte . 30
8.4 Addressing . 30
8.4.1 General . 30
8.4.2 Encapsulation . 31
Annex A (informative) Examples of how to evaluate the hash values . 32
Bibliography . 34
Figure 1 – Structure of a subtelegram . 15
Figure 2 – Illustration of an ASK envelope and various physical parameters . 17
Figure 3 – Complete frame structure for the 868,3 MHz AMWSP protocol . 23
Figure 4 – Encoded subframe . 24
Figure 5 – TX maturity time divided into four 10 ms time ranges . 25
Figure 6 – Conversion of a switch telegram to a normal telegram. 29
Figure 7 – Example of an encapsulation . 31
Figure A.1 – Example of a C code program of the 4 bit long summation hash value . 32
Figure A.2 – Example of a C code program of the 8 bit long summation hash value . 32
Figure A.3 – Efficient C code program for the evaluation of an 8 bit long CRC type
hash value . 33
Table 1 – AMWSP protocol stack structure (OSI) . 14
Table 2 – Transmitter requirements for the 315 MHz AMWSP protocol . 19
Table 3 – Receiver requirements for the 315 MHz AMWSP protocol . 20
Table 4 – Minimum required link budget for the 315 MHz AMWSP protocol . 20
Table 5 – Maximum RX power for the 315 MHz AMWSP protocol . 21
Table 6 – Transmitter requirements for the 868,3 MHz AMWSP protocol. 21
Table 7 – Receiver requirements for the 868,3 MHz AMWSP protocol . 22
Table 8 – Minimum required link budget for the 868,3 MHz AMWSP protocol . 22
Table 9 – Maximum RX power for the 868,3 MHz AMWSP protocol . 23
Table 10 – Frame definition for the 315 MHz AMWSP protocol . 24
Table 11 – Frame definition for the 868,3 MHz AMWSP protocol . 24
Table 12 – Maturity time parameters . 25
Table 13 – Allocation of time slots to the different subtelegrams . 26
Table 14 – Identification of the hash function used in the telegram . 27
Table 15 – Conversion of the telegram type and STATUS fields from a switch telegram
to a telegram . 29
Table 16 – STATUS byte with repeater level bits . 30
Table 17 – Repeating bits in STATUS byte . 30
– 4 – ISO/IEC 14543-3-10:2020 © ISO/IEC 2020
INFORMATION TECHNOLOGY –
HOME ELECTRONIC SYSTEM (HES) ARCHITECTURE –
Part 3-10: Amplitude modulated wireless short-packet (AMWSP)
protocol optimized for energy harvesting –
Architecture and lower layer protocols
FOREWORD
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