Parasitic communication protocol for radio-frequency wireless power transmission

This standard defines procedures for transferring power to non-powered IoT devices using the existing ISM band communication infrastructure and RF WPT and a protocol for a two-way, long-distance wireless network in which IoT devices and APs communicate using backscatter modulation of ISM-band signals. Three components are required for two-way, long-distance wireless communication using backscatter modulation of ISM-band signals: an STA that transmits wireless power and data packets to SSNs by forming ISM-band signal channels between HIE-APs, a batteryless SSN that changes the sensitivity of the channel signals received from the STA using backscatter modulation, and an HIE-AP that practically decodes the channel signals whose sensitivity was changed by the SSN. In this standard, the procedures for CW-type RF WPT using communication among these three components are specified based on application of the CSI or RSSI detection method of ISM-band communication. This standard proposes a convergence communication protocol than can deploy sensors, which can operate at low power (dozens of microwatts or less) without batteries, collect energy, and perform communication, to transmit power to SSNs using RF WPT based on parasitic communication. This method can be applied to application service areas such as domestic IoT, the micro-sensor industry, and industries related to environmental monitoring in the future

Parasitäres Kommunikationsprotokoll für drahtlose Hochfrequenz-Leistungsübertragung

Protocole de communication parasite pour le transfert d'énergie sans fil par rayonnement radiofréquence

L'IEC 62980:2022 définit les procédures de transfert d'énergie vers des dispositifs d'IoT au moyen de l'infrastructure de communication existante sur les bandes ISM et du WPT RF, ainsi qu'un protocole de réseau sans fil longue distance bidirectionnel qui permet aux dispositifs d'IoT et aux points d'accès de communiquer par modulation de rétrodiffusion des signaux sur les bandes ISM. La communication sans fil longue distance bidirectionnelle fondée sur la modulation de rétrodiffusion des signaux sur les bandes ISM exige trois éléments: • une STA qui assure le transfert sans fil de l'énergie et des paquets de données vers les SSN en créant des canaux de signaux dans les bandes ISM entre HIE-AP ; • un SSN sans batterie qui modifie, par modulation de rétrodiffusion, la sensibilité des signaux de canal reçus depuis la STA ; et • un HIE-AP qui décode de manière pratique les signaux du canal dont la sensibilité a été modifiée par le SSN. Dans le présent document, les procédures de WPT RF de type CW qui utilisent la communication entre ces trois éléments sont spécifiées à partir de l'application d'une méthode de détection des CSI ou du RSSI de la communication sur les bandes ISM. Le présent document propose un protocole de communication convergent qui peut déployer des capteurs, lesquels peuvent fonctionner à faible puissance (quelques dizaines de microwatts ou moins) sans batteries, collecter de l'énergie et assurer une communication, afin d'alimenter des SSN au moyen d'un WPT RF fondé sur une communication parasite. Cette méthode pourra être appliquée ultérieurement à des services d'application tels que l'IoT domestique, l'industrie des microcapteurs et les industries impliquées dans la surveillance de l'environnement.

Lažni komunikacijski protokol za brezžični radiofrekvenčni prenos električne energije (IEC 62980:2022)

Ta standard določa postopke za prenos električne energije v naprave interneta stvari (IoT) brez napajanja z obstoječo infrastrukturo za komunikacijo prek radiofrekvenčnega pasu za industrijsko, znanstveno in medicinsko (ISM) uporabo ter brezžičnega radiofrekvenčnega prenosa električne energije (RF WPT), pa tudi protokol za dvosmerno brezžično omrežje na dolge razdalje, v katerem naprave interneta stvari in točke dostopa (AP) komunicirajo z modulacijo povratnega sipanja signalov v radiofrekvenčnem pasu. Za dvosmerno brezžično komunikacijo na dolge razdalje z modulacijo povratnega sipanja signalov v radiofrekvenčnem pasu so potrebne tri komponente: postaja (STA), ki z vzpostavitvijo kanalov radiofrekvenčnih pasov med HIE in točkami dostopa prenaša brezžično električno energijo in podatkovne pakete do SSN-jev, SSN brez baterije, ki spremeni občutljivost signalov kanala, prejetih od postaje, ki uporablja modulacijo povratnega sipanja, in povezava med HIE in točko dostopa, ki dekodira signale kanala, katerih občutljivost je spremenil SSN. V tem standardu so določeni postopki za brezžični radiofrekvenčni prenos električne energije z nosilnim valovanjem prek komunikacije med temi tremi komponentami, in sicer na podlagi metode zaznavanja CSI ali indikatorja moči prejetega signala (RSSI) komunikacije prek radiofrekvenčnega pasu za industrijsko, znanstveno in medicinsko uporabo.
V tem standardu je predlagan konvergenčni komunikacijski protokol, pri katerem je mogoče uporabiti senzorje, ki lahko delujejo z nizko močjo (več deset mikrovatov ali manj) brez baterij, zbirajo energijo in izvajajo komunikacijo, za prenos energije na SSN-je z brezžičnim radiofrekvenčnim prenosom električne energije, ki temelji na lažni komunikaciji. To metodo je mogoče uporabljati za področja uporabe storitev, kot so domači internet stvari, industrija mikrosenzorjev in industrije, povezane s prihodnjim spremljanjem okolja.

General Information

Status
Published
Publication Date
03-Nov-2022
Current Stage
6060 - Document made available - Publishing
Start Date
04-Nov-2022
Completion Date
04-Nov-2022

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SLOVENSKI STANDARD
01-september-2023
Lažni komunikacijski protokol za brezžični radiofrekvenčni prenos električne
energije (IEC 62980:2022)
Parasitic communication protocol for radio-frequency wireless power transmission (IEC
62980:2022)
Parasitäres Kommunikationsprotokoll für drahtlose Hochfrequenz-Leistungsübertragung
(IEC 62980:2022)
Protocole de communication parasite pour le transfert d'énergie sans fil par rayonnement
radiofréquence (IEC 62980:2022)
Ta slovenski standard je istoveten z: EN IEC 62980:2022
ICS:
33.160.01 Avdio, video in avdiovizualni Audio, video and audiovisual
sistemi na splošno systems in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62980

NORME EUROPÉENNE
EUROPÄISCHE NORM November 2022
ICS 29.240.99
English Version
Parasitic communication protocol for radio-frequency wireless
power transmission
(IEC 62980:2022)
Protocole de communication parasite pour le transfert Parasitäres Kommunikationsprotokoll für drahtlose
d'énergie sans fil par rayonnement radiofréquence Hochfrequenz-Leistungsübertragung
(IEC 62980:2022) (IEC 62980:2022)
This European Standard was approved by CENELEC on 2022-11-02. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62980:2022 E
European foreword
The text of document 100/3797/FDIS, future edition 1 of IEC 62980, prepared by IEC/TC 100 "Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN IEC 62980:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-08-02
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-11-02
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 62980:2022 was approved by CENELEC as a European
Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
here: www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 63006 2019 Wireless power transfer (WPT) - Glossary EN IEC 63006 2019
of terms
IEC/TR 63239 2020 Radio frequency beam wireless power - -
transfer (WPT) for mobile devices

IEC 62980 ®
Edition 1.0 2022-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Parasitic communication protocol for radio-frequency wireless power

transmission
Protocole de communication parasite pour le transfert d'énergie sans fil par

rayonnement radiofréquence
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.240.99 ISBN 978-2-8322-5700-5

– 2 – IEC 62980:2022 © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 9
4 Overview . 10
5 Communication procedures for RF WPT . 11
5.1 General . 11
5.2 Communication procedures for parasitic downlink communication . 12
5.3 Communication procedures for parasitic uplink communication . 13
5.4 Backscatter downlink/uplink data flow . 14
5.5 WPT process . 15
6 Physical layer . 16
6.1 Modulation/coding method . 16
6.1.1 General . 16
6.1.2 Downlink modulation method . 16
6.1.3 Uplink modulation method . 17
6.1.4 Downlink coding method . 17
6.1.5 Uplink coding method . 18
6.2 Frame structure . 18
6.2.1 General . 18
6.2.2 Downlink frame structure . 18
6.2.3 Uplink frame structure . 20
7 Datalink layer . 21
7.1 Message definition . 21
7.1.1 General . 21
7.1.2 Select step . 24
7.1.3 Inventory step . 26
7.1.4 Access step . 29
7.2 Data encoding . 31
7.2.1 General . 31
7.2.2 FM0 encoding . 31
7.2.3 Miller encoding . 32
8 RF WPT control protocol. 33
8.1 Wireless charging architecture . 33
8.1.1 General . 33
8.1.2 Power control purpose of RF WPT . 34
8.1.3 HIE-AP operation control . 34
8.1.4 SSN operation control . 35
8.2 RF WPT process . 36
8.2.1 General . 36
8.2.2 General WPT management . 37
8.2.3 SSN control . 38
8.2.4 SSN static parameter . 39

IEC 62980:2022 © IEC 2022 – 3 –
8.2.5 SSN dynamic parameter . 40
Annex A (informative)  Regulation and certification . 42
Bibliography . 43

Figure 1 – Usage of RF-WPT . 10
Figure 2 – RF-WPT structure of using parasitic Wi-Fi communication technology . 11
Figure 3 – Parasitic downlink/uplink communication procedures . 12
Figure 4 – Specific parasitic downlink communication procedures . 13
Figure 5 – Specific parasitic uplink communication procedures . 14
Figure 6 – Data flow during parasitic downlink/uplink communication . 15
Figure 7 – RF WPT access procedures . 15
Figure 8 – RF WPT control protocol . 16
Figure 9 – PIE method packet configuration . 17
Figure 10 – Modulation and coding of the downlink preamble . 17
Figure 11 – Modulation and coding of the downlink preamble . 18
Figure 12 – Modulation and coding of the uplink preamble . 18
Figure 13 – Modulation and coding of the uplink payload . 18
Figure 14 – Physical layer structure of the downlink frame . 19
Figure 15 – Physical layer structure of the uplink frame . 20
Figure 16 – Model of command transmission between the STA and SSN . 22
Figure 17 – Diagram of sequential command transmission between the STA and SSN. 22
Figure 18 – SSN memory structure . 24
Figure 19 – Message exchange in the select step . 25
Figure 20 – CRC-16 circuit example. 26
Figure 21 – Message exchange method of the inventory step . 27
Figure 22 – Basic functions for FM0 encoding . 31
Figure 23 – State diagram for FM0 encoding generation .
...

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