This part of ISO\/IEC 14543 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.<\/p>\n
The design is characterized by<\/p>\n
keeping the communications very short, infrequent and mostly unidirectional, and<\/p>\n<\/li>\n
using communication frequencies that provide a good range even at low transmit power and avoid collisions from disturbers.<\/p>\n<\/li>\n<\/ul>\n
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.<\/p>\n
This document specifies OSI Layers 1 to 3 of the amplitude modulated wireless short-packet (AMWSP) protocols.<\/p>\n
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.<\/p>\n
Protection against malicious attacks is handled in the upper layers and thus not treated in this document.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | INTRODUCTION <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 3.2 Abbreviated terms 4 Conformance 5 Architecture 5.1 Generic protocol description 5.1.1 Overview <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 5.1.2 Physical layer 5.1.3 Data link layer 5.1.4 Network layer Tables Table 1 \u2013 AMWSP protocol stack structure (OSI) <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 5.1.5 Transport layer 5.1.6 Session layer 5.1.7 Presentation layer 5.1.8 Application layer 5.2 Data unit description Figures Figure 1 \u2013 Structure of a subtelegram <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 6 Layer 1 \u2013 Physical layer 6.1 Overview 6.2 General description <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure 2 \u2013 Illustration of an ASK envelope and various physical parameters <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 6.3 Requirements for the 315 MHz AMWSP protocol <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Table 2 \u2013 Transmitter requirements for the 315 MHz AMWSP protocol <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Table 3 \u2013 Receiver requirements for the 315 MHz AMWSP protocol Table 4 \u2013 Minimum required link budget for the 315 MHz AMWSP protocol <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 6.4 Requirements for the 868,3 MHz AMWSP protocol Table 5 \u2013 Maximum RX power for the 315 MHz AMWSP protocol Table 6 \u2013 Transmitter requirements for the 868,3 MHz AMWSP protocol <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Table 7 \u2013 Receiver requirements for the 868,3 MHz AMWSP protocol Table 8 \u2013 Minimum required link budget for the 868,3 MHz AMWSP protocol <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 6.5 Frame structure Figure 3 \u2013 Complete frame structure for the 868,3 MHz AMWSP protocol Table 9 \u2013 Maximum RX power for the 868,3 MHz AMWSP protocol <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | Figure 4 \u2013 Encoded subframe Table 10 \u2013 Frame definition for the 315 MHz AMWSP protocol Table 11 \u2013 Frame definition for the 868,3 MHz AMWSP protocol <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 7 Layer 2 \u2013 Data link layer 7.1 Overview 7.2 Subtelegram timing Figure 5 \u2013 TX maturity time divided into four 10 ms time ranges Table 12 \u2013 Maturity time parameters <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 7.3 Data integrity 7.3.1 General Table 13 \u2013 Allocation of time slots to the different subtelegrams <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 7.3.2 4 bit summation hash function algorithm 7.3.3 8 bit summation hash function algorithm 7.3.4 8 bit cyclic redundancy check (CRC) hash function algorithm Table 14 \u2013 Identification of the hash function used in the telegram <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 7.4 Listen before talk 8 Layer 3 \u2013 Network layer 8.1 Overview 8.2 Switch telegram <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 8.3 Repeater 8.3.1 General 8.3.2 Time response for collision avoidance Figure 6 \u2013 Conversion of a switch telegram to a normal telegram Table 15 \u2013 Conversion of the telegram type and STATUS fieldsfrom a switch telegram to a telegram <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 8.3.3 Bits of a repeater level in the STATUS byte 8.4 Addressing 8.4.1 General Table 16 \u2013 STATUS byte with repeater level bits Table 17 \u2013 Repeating bits in STATUS byte <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 8.4.2 Encapsulation Figure 7 \u2013 Example of an encapsulation <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Annex A (informative)Examples of how to evaluate the hash values Figure A.1 \u2013 Example of a C code program of the 4 bit long summation hash value Figure A.2 \u2013 Example of a C code program of the 8 bit long summation hash value <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Figure A.3 \u2013 Efficient C code program for the evaluationof an 8 bit long CRC type hash value <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Information technology. Home electronic system (HES) architecture – Amplitude modulated wireless short-packet (AMWSP) protocol optimized for energy harvesting. Architecture and lower layer protocols<\/b><\/p>\n |