ISO/IEC 17568:2013

Information technology — Telecommunications and information exchange between systems — Close proximity electric induction wireless communications

ISO/IEC 17568:2012 specifies a connection layer (CNL) and a physical layer (PHY) for transferring data between two close proximity entities using electric induction coupling.

Technologies de l'information — Téléinformatique — Communications sans fil à induction électrique de proximité rapprochée

General Information

• Status: Published
• Publication Date: 07-Mar-2013
• ICS: 33.040.40 - Data communication networks
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 9060 - Close of review
• Start Date: 02-Dec-2028

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD 17568
First edition
2013-03-01


Information technology —
Telecommunications and information
exchange between systems — Close
proximity electric induction wireless
communications
Technologies de l'information — Téléinformatique — Communications
sans fil à induction électrique de proximité rapprochée




Reference number
ISO/IEC 17568:2013(E)
©
ISO/IEC 2013

---------------------- Page: 1 ----------------------
ISO/IEC 17568:2013(E)

COPYRIGHT PROTECTED DOCUMENT


©  ISO/IEC 2013
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any
means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission.
Permission can be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland

ii © ISO/IEC 2013 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/IEC 17568:2013(E)
Contents Page
Foreword .vi
Introduction.vii
1 Scope.1
2 Conformance .1
3 Normative references.1
4 Terms and definitions .1
5 Abbreviations and acronyms .2
6 Overview.3
6.1 Introduction.3
7 Transmit signal .4
7.1 Modulation scheme parameters .4
7.2 Transmitter functional block diagram .4
7.2.1 Supported Rate Settings and rate dependent parameters.5
7.2.2 Reed-Solomon encoder .6
7.2.3 Convolutional encoder.7
7.2.4 ECS .8
7.2.5 Spreader .9
7.2.6 Sync sequence .9
7.2.7 Scrambler .10
7.2.8 Scrambling sequence generator.11
7.2.9 Pi/2 shift BPSK mapper.12
7.2.10 Mathematical framework of the Up Converter and the Baseband Waveform Generator.13
7.2.11 Baseband waveform.13
7.3 Frame format.14
7.3.1 PPDU format .14
7.3.2 PHY Header format.15
7.4 Transmitter.17
7.4.1 Measurement points.17
7.4.2 Transmit frequency .17
7.4.3 Transmit clock rate requirement.17
7.4.4 Transmit Constellation Error (EVM) .17
8 Receiver.17
8.1 Measurement point.17
8.2 Reference sensitivity.17
8.3 Blocking.17
9 Electric Induction Field.18
10 CNL service definition.19
10.1 Overview of CNL services .19
10.1.1 Connection control service .19
10.1.2 Data service .19
10.1.3 Security service .19
10.2 CNL service access point.19
10.2.1 Initialize.22
10.2.2 Close.22
10.2.3 Connect and accept .22
10.2.4 Connection release .24
10.2.5 Power save.25
© ISO/IEC 2013 – All rights reserved iii

---------------------- Page: 3 ----------------------
ISO/IEC 17568:2013(E)
10.2.6 Data transfer.26
10.3 CPDU formats.27
10.3.1 Conventions .27
10.3.2 Acknowledgement (ACK) CPDU.28
10.3.3 CNL data CPDUs.32
10.3.4 Management CPDUs (Link control message) .34
10.4 CNL function description.42
10.4.1 Segmenting/Reassembling.42
10.4.2 Medium state sensing .43
10.4.3 CNL-Level acknowledgements.43
10.4.4 Interframe space (IFS) .48
10.4.5 Access procedure.49
10.4.6 Multirate support.51
10.4.7 UID filter .51
10.5 CNL state .51
10.5.1 Close state.52
10.5.2 Search state.52
10.5.3 Connection request state.53
10.5.4 Accept waiting state .53
10.5.5 Response waiting state.53
10.5.6 Responder response state.54
10.5.7 Initiator connected state .54
10.5.8 Responder connected state.54
10.5.9 Sub-states within the Initiator connected state or Responder connected state.55
10.6 Numerical parameters .57
Annex A (normative) UID Specification .59
A.1 UID Composition.59
A.1.1 Specifier ID .59
A.1.2 Reserved.59
A.1.3 Extension Identifier.59
Annex B (informative) Coupler.60
Annex C (informative) Coupler measurement .61
Annex D (informative) Reference Coupler .63
Annex E (informative) Sample Data Sequences.65
E.1 Reed-Solomon Encoder .65
E.2 Convolutional Encoder .65
E.3 PHY Header HCS.67
E.4 Common CNL Header HCS.67
E.5 Sub CNL Header HCS.67
E.6 Scrambling sequence generator.67
Annex F (informative) CNL frame exchange sequences.70
F.1 CNL frame exchange sequences .70
F.1.1 Connection setup procedure.70
F.1.2 CSDU exchange procedure .70
F.1.3 Connection sleep procedure .71
F.1.4 Connection wakeup procedure .72
F.1.5 Connection confirmation procedure.73
F.1.6 Connection release procedure.73
Annex G (informative) CNL service operation.74
G.1 Initialize operation .74
G.2 Close operation.74
G.3 Connect request.75
G.3.1 Connect request operation .75
G.3.2 Accept receive operation .75
G.3.3 Accept response operation .76
G.3.4 Connect release operation.76
iv © ISO/IEC 2013 – All rights reserved

---------------------- Page: 4 ----------------------
ISO/IEC 17568:2013(E)
G.3.5 Accept release operation.76
G.4 Connect accept.77
G.4.1 Request receive operation.77
G.4.2 Accept request operation .77
G.4.3 Accept acknowledge operation .78
G.4.4 Accept release operation.78
G.4.5 Connect release operation .79
G.4.6 Request crossover operation.79
G.4.7 Accept request operation .80
G.4.8 Accept release operation.80
G.5 Release .81
G.5.1 Release request receive operation .81
G.5.2 Release receive operation .81
G.6 Transfer data.82
G.6.1 Data send operation .82
G.6.2 Data receive operation.83
G.6.3 Resend timeout operation .84
G.6.4 Target wake operation .85
G.7 Power save.86
G.7.1 Power save request operation .86
G.7.2 Sleep receive operation .87
G.8 Wakeup.88
G.8.1 Wakeup request operation .88
G.8.2 Wakeup acknowledge operation.88
G.8.3 Wakeup receive operation.89
G.8.4 Data send request operation.89
G.8.5 Wakeup data send operation .89
G.8.6 Wakeup timeout operation .90
G.9 Probe.90
G.9.1 Probe send operation.91
G.10 Probe ACK receive operation.91
G.10.1 Probe receive operation.91
G.10.2 Probe timeout operation.92

© ISO/IEC 2013 – All rights reserved v

---------------------- Page: 5 ----------------------
ISO/IEC 17568:2013(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are members of
ISO or IEC participate in the development of International Standards through technical committees
established by the respective organization to deal with particular fields of technical activity. ISO and IEC
technical committees collaborate in fields of mutual interest. Other international organizations, governmental
and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information
technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. Draft International
Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as
an International Standard requires approval by at least 75 % of the national bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.
ISO/IEC 17568 was prepared by Ecma International (as ECMA-398) and was adopted, under a special “fast-
track procedure”, by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its
approval by national bodies of ISO and IEC.

vi © ISO/IEC 2013 – All rights reserved

---------------------- Page: 6 ----------------------
ISO/IEC 17568:2013(E)
Introduction
Today’s typical consumer uses digital files to store multimedia content such as music, photos, and videos. But
these files are quickly becoming larger in number and size. A continual demand for higher quality results in
larger file sizes. And proliferation of smaller, portable devices makes it easier to generate more content in less
time. But the desire to store, share, and enjoy that content remains strong. And this usually requires
transferring the content from one device to another. For example, storing might involve transferring the
content from a video camera to an external disk drive. Sharing photos might involve transferring the contents
from one mobile phone to another mobile phone. And enjoying content might involve streaming content from a
video camera to a TV using a special video cable.
But with today’s available technology, these activities present difficulties to the average consumer. The
transfer process may take a long time due to the large file sizes. Or it may involve special cables or complex
setup. Therefore, a need exists to make it faster and simpler to transfer large multimedia files. This
International Standard specifies a technology that addresses this need by using close proximity electric
induction to transfer large files quickly and easily.

© ISO/IEC 2013 – All rights reserved vii

---------------------- Page: 7 ----------------------
INTERNATIONAL STANDARD ISO/IEC 17568:2013(E)

Information technology — Telecommunications and information
exchange between systems — Close proximity electric
induction wireless communications
1 Scope
This International Standard specifies a connection layer (CNL) and a physical layer (PHY) for transferring data
between two close proximity entities using electric induction coupling.
2 Conformance
Implementations conforming to this International Standard implement both the CNL and the PHY. All
Conforming implementations support a centre frequency of 4,48 GHz and all rate settings specified in Table 2.
3 Normative references
The following referenced documents are indispensable for the application 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.
ISO/IEC 7498-1:1994, Information technology — Open System Interconnection — Basic Reference Model:
The Basic Model
ITU-T Z.120, Series Z: Languages and General Software Aspects for Telecommunication Systems, Formal
description techniques (FDT) – Message Sequence Chart (MSC)
4 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
4.1
chip
shortest duration digital unit that is transmitted and used to spread the spectrum
4.2
chip rate
rate at which chips are transmitted
4.3
coupler
antenna used to transmit and receive an electric induction field
4.4
electric induction field
electric field with strength inversely proportional to the distance squared
© ISO/IEC 2013 – All rights reserved 1

---------------------- Page: 8 ----------------------
ISO/IEC 17568:2013(E)
4.5
initiator
sender of a connection request
4.6
PHY rate
chip rate / spreading factor
4.7
responder
receiver of a connection request
4.8
spreading factor
number of duplications
4.9
symbol
modulation pulse in a single I or Q channel as expressed as a baseband waveform
4.10
symbol rate
rate at which symbols are transmitted in each I or Q channel
4.11
target
peer entity
4.12
unique ID
code uniquely identifying each implemented unit
5 Abbreviations and acronyms
ACK Acknowledgement
BPSK Binary Phase Shift Keying
CCF Convolutional Coding Factor
CNL CoNnection Layer
CPCI CNL Protocol Control Information
CPDU Connection layer Protocol Data Unit
CSDU Connection layer Service Data Unit
C-Acc “Connection Accept” message management frame
C-Probe “Connection Probe” message management frame
C-Req “Connection Request” message management frame
C-Rls “Connection Release” message management frame
C-Sleep “Connection Sleep” message management frame
C-Wake “Connection Wakeup” message management frame
ECS Error Check Sequence
EVM Error Vector Magnitude
FCS Frame Check Sequence
FEC Forward Error Collection
HCS Header Check Sequence
ImACK Immediate Acknowledgement required
LFSR Linear Feed-back Shift Register
LiCC Link Control Command
MSC Message Sequence Chart
MUX Multiplexer
NoACK No Acknowledgement required
2 © ISO/IEC 2013 – All rights reserved

---------------------- Page: 9 ----------------------
ISO/IEC 17568:2013(E)
PDU Protocol Data Unit
PHY Physical Layer
PPCI PHY Protocol Control Information
PPDU Phy layer Protocol Data Unit
PSD Power Spectral Density
PSDU PHY SDU
SAP Service Access Point
SDU Service Data Unit
UID Unique ID
6 Overview
6.1 Introduction
This International Standard specifies the bottom 2 layers of a close proximity wireless transfer technology. By
touching (or bringing very close together) two electronic entities, this technology allows high speed exchange
of data. The basic concept consists of a touch-activated multi-purpose interface designed for applications
requiring high-speed data transfer between two entities in a point-to-point (1:1) mode, without the need for
external physical connectors.
The physical layer has a maximum transmission rate of 560 Mbps, adjusting the data rate downward
according to the wireless environment to maintain a robust link even when the surrounding wireless condition
fluctuates.
The RF transmit power is kept at a very low level to cause negligible interference with other nearby wireless
systems, including other close proximity electric induction systems.
Implementations transmit and receive by means of an electric induction field suitable for near field data
exchange. This approach is fundamentally different from traditional wireless systems using microwave
radiation.
Entities establish a link to enable data transfer and serve as initiator and responder respectively. These two
r
...