1、BSI Standards Publication BS ISO/IEC 17821:2015 Information technology Specification of low power wireless mesh network over channel-hopped TDMA linksBS ISO/IEC 17821:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO/IEC 17821:2015. The UK participation in
2、 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 all the necessary provisions of a contract. Users are responsible for its
3、correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 78724 9 ICS 35.110 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and
4、 Strategy Committee on 30 April 2015. Amendments/corrigenda issued since publication Date T e x t a f f e c t e dBS ISO/IEC 17821:2015 Information technology Specification of low power wireless mesh network over channel-hopped TDMA links Technologies de linformation Spcification des rseaux maills sa
5、ns fil faible puissance par liens AMRT saut de canaux INTERNATIONAL STANDARD ISO/IEC 17821 Reference number ISO/IEC 17821:2015(E) First edition 2015-04-15 ISO/IEC 2015 BS ISO/IEC 17821:2015ii ISO/IEC 2015 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2015 All rights reserved. Unless other
6、wise 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 b
7、elow or ISOs 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 copyrightiso.org Web www.iso.org Published in Switzerland ISO/IEC 17821:2015(E)BS ISO/IEC 17821:2015ISO/IEC 17821:2015(E)Foreword v Int
8、roduction vi 1 Scope . 1 2 Normative references 1 3 Terms and definitions . 1 4 Abbreviations. 2 5 General description . 3 5.1 General . 3 5.2 Components of the LPWMN 3 5.3 Architecture of the LPWMN . 4 5.4 Functional overview . 5 5.4.1 Link network formation 5 5.4.2 Link connection 6 5.4.3 Unbalanc
9、ed cluster-tree addressing . 7 5.4.4 Routing . 8 6 Functional description . 9 6.1 Starting the LPWMN . 9 6.1.1 Starting a link network . 9 6.1.2 Starting a router 10 6.1.3 Starting a device 11 6.2 Joining a link network 12 6.2.1 Device procedure 12 6.2.2 Router procedure .12 6.3 Leaving a link netwo
10、rk 13 6.4 Address assignment with an unbalanced cluster-tree structure .14 6.5 DSME MAC link and link-path .15 6.5.1 Establishing a link-path 15 6.5.2 Maintaining a link-path .16 6.5.3 Routing a link-path . .17 6.6 Data services 19 6.6.1 General.19 6.6.2 DLN sublayer data service 19 6.6.3 DLC sublay
11、er data service .20 6.6.4 Data reception .20 7 LPWMN services .21 7.1 LPWMN management services 21 7.1.1 Primitives for link network formation .22 7.1.2 Primitives for link network joining as a router 24 7.1.3 Primitives for link network joining as a device 25 7.1.4 Primitives for the DLIB managemen
12、t .26 7.1.5 Primitives for link network resources management .29 7.2 LPWMN link management services .30 7.2.1 Primitives for link establishment .30 7.2.2 Primitives for link release .32 7.2.3 Primitives for link management 34 7.3 LPWMN data services 35 7.3.1 Primitives for data service on a CAP link
13、 .35 7.3.2 Primitives for data service on a shared GTS link.37 7.3.3 Primitives for data service on a dedicated link path .39 7.3.4 Primitives for data service through DLN sublayer 41 8 LPWMN frame formats 43 ISO/IEC 2015 All rights reserved iii Contents PageBS ISO/IEC 17821:2015ISO/IEC 17821:2015(E
14、)8.1 General link network frame format .43 8.1.1 Frame Control field .44 8.1.2 Destination Address field 44 8.1.3 Source Address field 45 8.1.4 Destination IEEE Address field .45 8.1.5 Source IEEE Address field .45 8.1.6 Link Management subframe field.45 8.1.7 Link Network Management subframe field
15、.45 8.1.8 Frame Payload field 45 8.2 Data frames .45 8.3 Link management command frames.46 8.3.1 Link Management Command Frame Identifier field 46 8.3.2 Sequence Number field .46 8.3.3 Length of Link Management Command field .47 8.3.4 Link Management Command Payload field .47 8.4 Link network manage
16、ment command frames 48 8.4.1 Link Network Management Command Frame Identifier field 49 8.4.2 Sequence Number field .49 8.4.3 Length of Link Network Management Command Frame field 50 8.4.4 Link Network Management Command Payload field 50 9 Link network constants, information bases, and status values
17、.52 9.1 Link network constants 52 9.2 DSME MAC link Information base .52 9.3 Link network status values .57 Annex A (informative) Enhanced MAC for reliable services .58 Annex B (informative) Authentication and Key Establishment Protocols (AKEP) 60 Bibliography .65 iv ISO/IEC 2015 All rights reserved
18、BS ISO/IEC 17821:2015ISO/IEC 17821:2015(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 developmen
19、t 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,
20、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/IEC Directive
21、s, 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 that some of the
22、 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 patent declara
23、tions 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 information ab
24、out 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, SC 6, Telecommunications and information exchange between systems. ISO/I
25、EC 2015 All rights reserved vBS ISO/IEC 17821:2015ISO/IEC 17821:2015(E) Introduction This working draft defines the protocol for the low-power wireless mesh network over channel-hopped TDMA links (LPWMN). The objective of LPWMN is to define a wireless mesh network specification, which is relatively
26、lightweight compared to the legacy WPAN network specifications and can maximize usefulness of the channel-hopped TDMA link which is followed by the deterministic and synchronous multichannel extension (DSME) MAC specified in IEEE 802.15.4e-2012 amendment. In recent years, there is market demand for
27、applying the low-energy short range communication of the WSN to the networks for mission-critical services or real-time services including remote monitoring and alarming of health devices or medicine equipment, sensing and actuation control of process automation, and voice service over the low-energ
28、y short range networks. To provide more reliable link and deterministic delay for the mission-critical services, enhancements of the IEEE 802.15.4-2006 MAC specification was started in March 2008 and the draft of the amendment is approved in February 2012. In the IEEE 802.15.4e-2012 amendment, three
29、 types of TDMA and two types of channel diversity function are added as optional MAC features. These new MAC features introduce two attributes to be managed in the network layer, which includes time slots and radio channels. To employ the new enhanced MAC for the reliable and real-time services in t
30、he low-cost, low-power, short-range communication network, the network protocol needs to be designed for managing the network resources including time slots and radio channels. The LPWMN is a network specification over the DSME of IEEE 802.15.4e-2012 amendment. The LPWMN is applicable to industrial
31、applications that require a loss sensitive large wireless network guaranteeing deterministic end-to-end delay with low-power resource-constrained communication nodes. The International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC) draw attention to the fa
32、ct that it is claimed that compliance with this document may involve the use of a patent concerning the functional procedure and message structure of LPWMN given in Clauses 5, 6, 7, and 8, and a patent concerning the authentication and key establishment protocols given in Annex B. ISO and IEC take n
33、o position concerning the evidence, validity, and scope of this patent right. The holder of this patent right has assured the ISO and IEC the willingness to negotiate licences either free of charge or under reasonable and non-discriminatory terms and conditions with applicants throughout the world.
34、In this respect, the statement of the holder of this patent right is registered with ISO and IEC. Information may be obtained from the following: Patent holder: Electronics and Telecommunications Research Institute (ETRI) Address: 138 Gajeongno, Yuseong-gu, Daejeon, 305-700, Korea; Patent holder: Ch
35、ina IWNCOMM Co., LTD Address: A201, QinFengGe, Xian Software Park, No. 68 Keji 2rd, Xian Hi-Tech Industrial Development Zone, Xian Shaanxi, P.R.China. 710075. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identif
36、ied above. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO (www.iso.org/patents) and IEC (http:/ /patents.iec.ch) maintain online databases of patents relevant to their standards. Users are encouraged to consult the databases for the most up-to-date infor
37、mation concerning patents.vi ISO/IEC 2015 All rights reservedBS ISO/IEC 17821:2015Information technology Specification of low power wireless mesh network over channel-hopped TDMA links 1 Scope This International Standard defines the network specification for devices, which are operated on IEEE Std.
38、802.15.4-2011 PHY, capable to support the channel-hopped TDMA links of the DSME MAC of IEEE Std. 802.15.4e-2012, to provide low-cost communication network that allows reliable, deterministic- latency, and scalable wireless mesh connectivity. This International Standard provides the following: DSME M
39、AC link control; unbalanced cluster-tree based network formation; directional multiple grades mesh connection; link-path routing and data forwarding; link and link-path maintenance. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and a
40、re 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. IEEE Std 802.15.4-2011, IEEE Standard for Local and metropolitan area networksPart 15.4: Low-Rate Wire
41、less Personal Area Networks (LR-WPANs) IEEE Std 802.15.4e-2012, IEEE Standard for Local and metropolitan area networksPart 15.4: Low-Rate Wireless Personal Area Networks (LR-WPANs), Amendment 1: MAC sublayer 3 Terms and definitions For the purposes of this document, the following terms and definitio
42、ns apply. 3.1 coordinator device in a low-rate wireless personal area network (LR WPAN) that provides synchronization services to other devices in the LR WPAN 3.2 device any entity containing an implementation of the IEEE 802.15.4e-2012 DSME medium access control and physical interface to the wirele
43、ss medium Note 1 to entry: A device may be a reduced-function device or a full-function device. 3.3 frame format of aggregated bits from a medium access control sublayer entity that are transmitted together in time INTERNATIONAL ST ANDARD ISO/IEC 17821:2015(E) ISO/IEC ISO pub-date year All rights re
44、served 1BS ISO/IEC 17821:2015ISO/IEC 17821:2015(E) 3.4 full-function device FFD device capable of operating as a coordinator 3.5 personal area network (PAN) coordinator coordinator that is the principal controller of a PAN Note 1 to entry: An IEEE 802.15.4 network has exactly one PAN coordinator. 3.
45、6 reduced-function device RFD device that is not capable of operating as a coordinator 4 Abbreviations The following acronyms are used in this document. AKEP Authentication and Key Establishment Protocols CSMA-CA Carrier Sense Multiple Access Collision Avoidance DLCE DSME MAC Link Control sublayer E
46、ntity DLIB DSME MAC Link network Information Base DLNE DSME MAC Link Network sublayer Entity DLPDU DSME MAC Link network sublayer Protocol Data Unit DLSDU DSME MAC Link network sublayer Service Data Unit DSME Deterministic and Synchronous Multi-channel Extension FFD Full Function Device GTS Guarante
47、ed Time Slot ID Identification IDAP ID-based Authentication Protocol IEEE Institute of Electrical and Electronics Engineers LPWMN Low-Power Wireless Mesh Network LSAP Light-weight Shared-key Authentication Protocol MAC Media Access Control MCPS MAC Common Part Sublayer MIB MAC Information Base MLME
48、MAC Layer Management Entity MSDU MAC Service Data Unit PAN Personal Area Network2 ISO/IEC 2015 All rights reservedBS ISO/IEC 17821:2015ISO/IEC 17821:2015(E) PHY Physical Layer PTK Pairwise Temporal Key QoS Quality-of-Service RF Radio Frequency RFD Reduced Function Device SAP Service Access Point TDM
49、A Time Division Multiple Access WPAN Wireless Personal Area Network WSN Wireless Sensor Network 5 General description 5.1 General The LPWMN is a low cost communication network that allows reliable, deterministic-latency, and scalable wireless mesh connectivity with low-power and low-rate WPAN devices. The main objectives of an LPWMN are optimal utilization of the channel-hopped TDMA links, cluster-tree based mesh network formation, and multiple grade of path selection, while mainta
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