1、BSI Standards Publication BS ISO/IEC 15149-3:2016 Information technology T e l e c o m m u n i c a t i o n s a n d information exchange between systems Magnetic field area network (MFAN) Part 3: Relay Protocol for Extended RangeBS ISO/IEC 15149-3:2016 BRITISH STANDARD National foreword This British
2、Standard 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
3、include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016 ISBN 978 0 580 86906 8 ICS 35.110 Compliance with a British Standard cannot confer immunity from legal obligations. T
4、his British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2016. Amendments/corrigenda issued since publication Date T e x t a f f e c t e dBS ISO/IEC 15149-3:2016 Information technology Telecommunications and information exchange between syst
5、ems Magnetic field area network (MFAN) Part 3: Relay Protocol for Extended Range Technologies de linformation Tlinformatique Rseau de zone de champ magntique (MFAN) INTERNATIONAL STANDARD ISO/IEC 15149-3 Reference number ISO/IEC 15149-3:2016(E) First edition 2016-01-15 ISO/IEC 2016 BS ISO/IEC 15149-
6、3:2016ii ISO/IEC 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2016, Published in Switzerland 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 photocop
7、ying, or posting on the internet 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 office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 74
8、9 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO/IEC 15149-3:2016(E)BS ISO/IEC 15149-3:2016ISO/IEC 15149-3:2016(E)Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 Terms and definitions . 1 4 Symbols and abbreviated terms . 2 5 Overview . 2 6 Network elements . 2 6.1 Gen
9、eral . 2 6.2 Time element 2 6.2.1 Request period. 3 6.2.2 Response period . 3 6.2.3 Spontaneous period 3 6.3 Physical element 3 6.3.1 MFAN-C 4 6.3.2 MFAN-N 4 6.3.3 MFAN-R 4 6.4 Address element 4 6.4.1 Node ID . 4 7 Network functions. 5 7.1 General . 5 7.2 Request period 5 7.3 Response period 5 7.4 S
10、pontaneous period 5 8 Network status 5 8.1 General . 5 8.2 Network configuration . 5 8.3 Network association . 5 8.4 Network disassociation . 6 8.5 Network association check . 6 8.6 Data transmission. 6 8.7 Network release . 6 8.8 MFAN device status . 6 9 MAC layer frame format 6 9.1 General . 6 9.2
11、 Frame format 6 9.3 Frame type 6 9.4 Payload format 7 9.4.1 Request frame 7 9.4.2 Response frame . 7 9.4.3 Response confirmation frame 8 9.4.4 Response confirmation block . 9 10 MAC layer function .10 10.1 General 10 10.2 Repeater set-up .10 Bibliography .11 ISO/IEC 2016 All rights reserved iii Cont
12、ents PageBS ISO/IEC 15149-3:2016ISO/IEC 15149-3:2016(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 t
13、he 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-g
14、overnmental, 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. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/
15、IEC Directives, Part 1. In particular the different approval criteria needed for the 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 tha
16、t 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. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of p
17、atent declarations received (see www.iso.org/patents). Any trade name used in this document 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 i
18、nformation about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/IEC JTC 1, Information technology, Subcommittee SC 6, Telecommunications and information excha
19、nge between systems. This first edition of ISO/IEC 15149-3, together with ISO/IEC 15149-1, 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
20、Telecommunications and information exchange between systems: Part 1: Air Interface Part 2: 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 1514
21、9-3:2016(E) Introduction This part of ISO/IEC 15149 provides protocols for magnetic field area 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,
22、 relay protocol and security protocol. ISO/IEC 15149-1 specifies the physical layer and media 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 spe
23、cifies the relay protocol to extend effective network coverage of magnetic field area network. 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 15149-3:2016Informat
24、ion technology Telecommunications and information exchange between systems Magnetic field area network (MFAN) Part 3: Relay Protocol for Extended Range 1 Scope This part of ISO/IEC 15149 specifies relay protocol to extend effective network coverage of magnetic field area networks. The addressing, re
25、quest and response codes are defined. 2 Normative references The following documents, in whole or in 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 re
26、ferenced document (including any amendments) applies. ISO/IEC 15149-1:2014, Information technology Telecommunications and information exchange between systems Magnetic field area network (MFAN) Part 1: Air Interface 3 Terms and definitions For the purposes of this document, the terms and definitions
27、 given in ISO/IEC 15149-1:2014 and the following apply. 3.1 wireless power transfer WPT mechanism in which a unit having enough power wirelessly transfer it to other units 3.2 Magnetic Field Area Network MFAN wireless network that provides reliable communication in harsh environments using magnetic
28、field 3.3 Magnetic Field Area Network - Coordinator MFAN-C device that manages the connection and release of nodes within the communication area and the sending and receiving time of data in an MFAN 3.4 Magnetic Field Area Network Node MFAN-N device except the coordinator that forms a network in an
29、MFAN 3.5 Magnetic Field Area Network Repeater MFAN-R device among MFAN-Ns that performs partial functions of coordinator INTERNATIONAL ST ANDARD 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 terms The following acro
30、nyms are used in this document: RSRq Repeater Set-up Request RSRs Repeater Set-up Response RSRA Repeater Set-up Response Acknowledgement 5 Overview MFAN is a wireless communication network that can transmit and receive data over a magnetic field in a low frequency band (30kHz300kHz.) Wireless commun
31、ication over a magnetic field enables reliable communication and extends the communication system coverage around metal, soil, and water. It is designed using those characteristics of the magnetic field communication. It uses a low carrier frequency for reliable communication and large magnetic fiel
32、d area in harsh environments, a simple and robust modulation like BPSK for a low implementation cost and error probability, and a dynamic 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.
33、 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, 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 p
34、rimary and the first device to be settled is MFAN-C. Once the coordinator is ready to broadcast request packets, MFAN superframe is initiated. 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
35、communication range, which means there will be no more than a single network in MFAN. Therefore, except for a single MFAN-C, the rest 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, o
36、r MFAN-R. MFAN-C and each MFAN-N are connected on 1:1 basis. 6 Network elements 6.1 General The network elements of MFAN relay network consist of time and physical elements. 6.2 Time element MFAN relay network is capable of utilizing TDMA management. MFAN-C manages a group of MFAN-Ns and MFAN-Rs by
37、allocating appropriate request time slot. Depending on the status of MFAN-Ns and MFAN-Rs, response period is adjusted. The structure of MFAN relay network superframe is described in Figure 1. The superframe is divided into three stages: request period, response period, and spontaneous period. The le
38、ngth of each stage is variable. The superframe is initiated when MFAN-C transfer response request packet during the request period. The response 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
39、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 1 Superframe structure of relay network If approved, MFAN-R shall be allocated of time slot, just like other MFAN-Ns. However, within the time slot, MFAN-R sha
40、ll 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 unreachable from the MFAN-C. 6.2.1 Request period In the request period of MFAN relay network, MFAN-R shall delivers response request packet to MFAN- Ns so they can
41、return relevant response packet during response period. 6.2.2 Response period In the response period of MFAN relay network, MFAN-Ns which are joined 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
42、 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 and acknowledgement packet. The time slots are numbered in periodical order to be allocated to appropriate MFAN-N. MFAN-R manages the allocation of time slo
43、ts for data and packet transmission. 6.2.3 Spontaneous period The spontaneous period of MFAN relay network begins when there is not a device returning 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
44、request of MFAN-R. The period lasts during the time which is allocated for MFAN-R by MFAN-C. 6.3 Physical element The physical element of MFAN relay network 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 indivi
45、dual 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 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 2
46、016 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 response packet. The structure of MFAN relay network is shown in Figure 2. Figure 2 The structure of relay network 6.3.1 MFAN-C MFAN-C is in charge of
47、 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-N MFAN-N is a device that is 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. I
48、t returns response packets according to the RR packet sent by MFAN-C or MFAN-R. 6.3.3 MFAN-R MFAN-R is a selective MFAN-N that performs functions of MFAN-C. It creates separate relay network within its response period to connect unreachable MFAN-Ns from MFAN-C. 6.4 Address element Specified in ISO/I
49、EC 15149-1:2014, 5.4. 6.4.1 Node ID Node 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 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 ID Node ID Content Remarks 0xFFFF All nodes When broadcasting or transmitting all nodes 0xFFFE Unjoined node Default ID for MFAN-N 0xFFFD Unjoined repeater node Default ID for M
