1、BSI Standards PublicationBS ISO/IEC 15149-3:2016Information technology T e l e c o m m u n i c a t i o n s a n d information exchange betweensystems Magnetic field areanetwork (MFAN)Part 3: Relay Protocol for Extended RangeBS ISO/IEC 15149-3:2016 BRITISH STANDARDNational forewordThis British Standar
2、d is the UK implementation of ISO/IEC 15149-3:2016.The UK participation in its preparation was entrusted to Technical Committee IST/6, Data communications.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include al
3、l the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 86906 8 ICS 35.110 Compliance with a British Standard cannot confer immunity from legal obligations.This British S
4、tandard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS ISO/IEC 15149-3:2016Information technology Telecommunications and information exchange between systems Magnetic fie
5、ld area network (MFAN) Part 3: Relay Protocol for Extended RangeTechnologies de linformation Tlinformatique Rseau de zone de champ magntique (MFAN)INTERNATIONAL STANDARDISO/IEC15149-3Reference numberISO/IEC 15149-3:2016(E)First edition2016-01-15 ISO/IEC 2016BS ISO/IEC 15149-3:2016ii ISO/IEC 2016 All
6、 rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO/IEC 2016, Published in SwitzerlandAll 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 int
7、ernet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCh. de Blandonnet 8 CP 401CH-1214 Vernier, Geneva, SwitzerlandTel. +41 22 749 01 11Fax +41 22 749 09 47copy
8、rightiso.orgwww.iso.orgISO/IEC 15149-3:2016(E)BS ISO/IEC 15149-3:2016ISO/IEC 15149-3:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbols and abbreviated terms . 25 Overview . 26 Network elements . 26.1 General . 26.2 Time element 26.2.1 Request per
9、iod. 36.2.2 Response period . 36.2.3 Spontaneous period 36.3 Physical element 36.3.1 MFAN-C 46.3.2 MFAN-N 46.3.3 MFAN-R 46.4 Address element 46.4.1 Node ID . 47 Network functions. 57.1 General . 57.2 Request period 57.3 Response period 57.4 Spontaneous period 58 Network status 58.1 General . 58.2 Ne
10、twork configuration . 58.3 Network association . 58.4 Network disassociation . 68.5 Network association check . 68.6 Data transmission. 68.7 Network release . 68.8 MFAN device status . 69 MAC layer frame format 69.1 General . 69.2 Frame format 69.3 Frame type 69.4 Payload format 79.4.1 Request frame
11、 79.4.2 Response frame . 79.4.3 Response confirmation frame 89.4.4 Response confirmation block . 910 MAC layer function .1010.1 General 1010.2 Repeater set-up . 10Bibliography .11 ISO/IEC 2016 All rights reserved iiiContents PageBS ISO/IEC 15149-3:2016ISO/IEC 15149-3:2016(E)ForewordISO (the Internat
12、ional 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
13、 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
14、 of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for th
15、e different types of document should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO and
16、 IEC shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this do
17、cument is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Tra
18、de (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/IEC JTC 1, Information technology, Subcommittee SC 6, Telecommunications and information exchange between systems.This first edition of ISO/IEC 15149-3, together with ISO/IEC 15149-
19、1, ISO/IEC 15149-2, and ISO/IEC 15149-4, cancels and replaces ISO/IEC 15149:2011, which has been technically revised.ISO/IEC 15149 consists of the following parts, under the general title Information technology Telecommunications and information exchange between systems: Part 1: Air Interface Part 2
20、: In-Band Control Protocol for Wireless Power Transfer Part 3: Relay Protocol for Extended Range Part 4: Security Protocol for Authenticationiv ISO/IEC 2016 All rights reservedBS ISO/IEC 15149-3:2016ISO/IEC 15149-3:2016(E)IntroductionThis part of ISO/IEC 15149 provides protocols for magnetic field a
21、rea networks (MFAN). MFAN can support the service based on wireless communication and wireless power transfer in harsh environments. MFAN is composed of four protocols; air interface, in-band control protocol, relay protocol and security protocol.ISO/IEC 15149-1 specifies the physical layer and medi
22、a access control layer protocols of wireless network over a magnetic field.ISO/IEC 15149-2 specifies the control protocol for wireless power transfer based on magnetic field area network.ISO/IEC 15149-3 specifies the relay protocol to extend effective network coverage of magnetic field area network.
23、ISO/IEC 15149-4 specifies the security protocol to authenticate nodes to communicate in magnetic field area network. ISO/IEC 2016 All rights reserved vBS ISO/IEC 15149-3:2016BS ISO/IEC 15149-3:2016Information technology Telecommunications and information exchange between systems Magnetic field area
24、network (MFAN) Part 3: Relay Protocol for Extended Range1 ScopeThis part of ISO/IEC 15149 specifies relay protocol to extend effective network coverage of magnetic field area networks. The addressing, request and response codes are defined.2 Normative referencesThe following documents, in whole or i
25、n part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO/IEC 15149-1:2014, Information technology T
26、elecommunications and information exchange between systems Magnetic field area network (MFAN) Part 1: Air Interface3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO/IEC 15149-1:2014 and the following apply.3.1wireless power transferWPTmechanism in which
27、 a unit having enough power wirelessly transfer it to other units3.2Magnetic Field Area NetworkMFANwireless network that provides reliable communication in harsh environments using magnetic field3.3Magnetic Field Area Network - CoordinatorMFAN-Cdevice that manages the connection and release of nodes
28、 within the communication area and the sending and receiving time of data in an MFAN3.4Magnetic Field Area Network NodeMFAN-Ndevice except the coordinator that forms a network in an MFAN3.5Magnetic Field Area Network RepeaterMFAN-Rdevice among MFAN-Ns that performs partial functions of coordinatorIN
29、TERNATIONAL STANDARD ISO/IEC 15149-3:2016(E) ISO/IEC 2016 All rights reserved 1BS ISO/IEC 15149-3:2016ISO/IEC 15149-3:2016(E)4 Symbols and abbreviated termsThe following acronyms are used in this document:RSRq Repeater Set-up RequestRSRs Repeater Set-up ResponseRSRA Repeater Set-up Response Acknowle
30、dgement5 OverviewMFAN is a wireless communication network that can transmit and receive data over a magnetic field in a low frequency band (30kHz300kHz.) Wireless communication over a magnetic field enables reliable communication and extends the communication system coverage around metal, soil, and
31、water. It is designed using those characteristics of the magnetic field communication. It uses a low carrier frequency for reliable communication and large magnetic field area in harsh environments, a simple and robust modulation like BPSK for a low implementation cost and error probability, and a d
32、ynamic coding technique like Manchester or NRZ-L coding for noise robustness. In essence, it provides several kbps data transmission within a distance of several meters.There are three types of devices associated to MFAN: MFAN-C, MFAN-N, and MFAN-R. Only a single MFAN-C is to exist per a single MFAN
33、, while together with several associated MFAN-Ns consist MFAN. MFAN-R, capable of creating a relay network, connects out-of-boundary MFAN-Ns to MFAN.Within MFAN, the primary and the first device to be settled is MFAN-C. Once the coordinator is ready to broadcast request packets, MFAN superframe is i
34、nitiated. MFAN-C is in charge of association, disassociation, and management of data transmission with MFAN-Ns and MFAN-Rs. There is only a single channel within MFAN communication range, which means there will be no more than a single network in MFAN. Therefore, except for a single MFAN-C, the rest
35、 devices are to be either MFAN-N or MFAN-R. All the devices of MFAN are classified as MFAN-C, MFAN-N, and MFAN-R, but any device can take the role of MFAN-C, MFAN-N, or MFAN-R. MFAN-C and each MFAN-N are connected on 1:1 basis.6 Network elements6.1 GeneralThe network elements of MFAN relay network c
36、onsist of time and physical elements.6.2 Time elementMFAN relay network is capable of utilizing TDMA management. MFAN-C manages a group of MFAN-Ns and MFAN-Rs by allocating appropriate request time slot. Depending on the status of MFAN-Ns and MFAN-Rs, response period is adjusted.The structure of MFA
37、N relay network superframe is described in Figure 1. The superframe is divided into three stages: request period, response period, and spontaneous period. The length of each stage is variable. The superframe is initiated when MFAN-C transfer response request packet during the request period. The res
38、ponse request packet contains information for MFAN-Ns and MFAN-Rs to return relevant response back to MFAN-C during the response period. MFAN-Ns may be approved to participate as MFAN-Rs upon the request of MFAN-C.2 ISO/IEC 2016 All rights reservedBS ISO/IEC 15149-3:2016ISO/IEC 15149-3:2016(E)Figure
39、 1 Superframe structure of relay networkIf approved, MFAN-R shall be allocated of time slot, just like other MFAN-Ns. However, within the time slot, MFAN-R shall sub-divide again its time slot to create superframe within its time slot. In this case, MFAN-R creates a relay network with MFAN-Ns unreac
40、hable from the MFAN-C.6.2.1 Request periodIn the request period of MFAN relay network, MFAN-R shall delivers response request packet to MFAN-Ns so they can return relevant response packet during response period.6.2.2 Response periodIn the response period of MFAN relay network, MFAN-Ns which are join
41、ed to MFAN relay network by MFAN-R return response packet back to MFAN-R based on the response request packet. Response period is divided into a number of time slots by the number of devices in MFAN relay network. The length of each time slot is variable depending on the length of response packet an
42、d acknowledgement packet. The time slots are numbered in periodical order to be allocated to appropriate MFAN-N. MFAN-R manages the allocation of time slots for data and packet transmission.6.2.3 Spontaneous periodThe spontaneous period of MFAN relay network begins when there is not a device returni
43、ng response packet for a certain length of time. In this period, MFAN-Ns which are joined to MFAN relay network by MFAN-R can transfer data without the request of MFAN-R. The period lasts during the time which is allocated for MFAN-R by MFAN-C.6.3 Physical elementThe physical element of MFAN relay n
44、etwork consists of devices that are MFAN-C, MFAN-N, and MFAN-R. MFAN relay network is a network that enables communication between a MFAN-C and individual MFAN-Ns and MFAN-Rs; its basic element is device. Depending on its role, a device is categorized as MFAN-C, MFAN-N or MFAN-R. MFAN-C manages the
45、entire MFAN relay network, and there will only be a single MFAN-C within a relay network. MFAN-C manages MFAN-Ns and MFAN-Rs by broadcasting ISO/IEC 2016 All rights reserved 3BS ISO/IEC 15149-3:2016ISO/IEC 15149-3:2016(E)response request packets. Accordingly, MFAN-Ns and MFAN-Rs return appropriate r
46、esponse packet. The structure of MFAN relay network is shown in Figure 2.Figure 2 The structure of relay network6.3.1 MFAN-CMFAN-C is in charge of the management of MFAN relay network with response request packet. There is only a single MFAN-C in a relay network.6.3.2 MFAN-NMFAN-N is a device that i
47、s associated to an MFAN relay network, and is not an MFAN-C or MFAN-R. As much as 65,519 MFAN-Ns can link to a relay network at the same time. It returns response packets according to the RR packet sent by MFAN-C or MFAN-R.6.3.3 MFAN-RMFAN-R is a selective MFAN-N that performs functions of MFAN-C. I
48、t creates separate relay network within its response period to connect unreachable MFAN-Ns from MFAN-C.6.4 Address elementSpecified in ISO/IEC 15149-1:2014, 5.4.6.4.1 Node IDNode ID is an identifier used instead of UID to identify nodes, and it has a 16 bit address assigned by MFAN-C. Some node IDs
49、are reserved in Table 1.4 ISO/IEC 2016 All rights reservedBS ISO/IEC 15149-3:2016ISO/IEC 15149-3:2016(E)Table 1 Reserved node IDNode ID Content Remarks0xFFFF All nodes When broadcasting or transmitting all nodes0xFFFE Unjoined node Default ID for MFAN-N0xFFFD Unjoined repeater node Default ID for MFAN-R0xFFF0 0xFFFC Reserved -7 Network functions7.1 GeneralMFAN relay network superframe consists of request period, response period, and spontaneous period.7.2 Request periodDuring the request period, MFAN-R broad
