IEC 63203-801-2:2022

IEC 63203-801-2
®

Edition 1.0 2022-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Wearable electronic devices and technologies –
Part 801-2: Smart body area network (SmartBAN) – Low complexity medium
access control (MAC) for SmartBAN

Technologies et dispositifs électroniques prêts-à-porter –
Partie 801-2: Smart body area network (SmartBAN) – Contrôle d'accès au
support (MAC) à faible complexité pour SmartBAN

IEC 63203-801-2:2022-11(en-fr)

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IEC 63203-801-2

®


Edition 1.0 2022-11




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside








Wearable electronic devices and technologies –

Part 801-2: Smart body area network (SmartBAN) – Low complexity medium

access control (MAC) for SmartBAN



Technologies et dispositifs électroniques prêts-à-porter –

Partie 801-2: Smart body area network (SmartBAN) – Contrôle d'accès au


support (MAC) à faible complexité pour SmartBAN













INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 35.100.01; 35.240.80 ISBN 978-2-8322-6001-2




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® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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– 2 – IEC 63203-801-2:2022 © IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Abbreviated terms . 8
5 General MAC framework . 9
5.1 Different device types . 9
5.2 Frequency spectrum . 10
5.3 Channel format . 10
5.3.1 Control channel format . 10
5.3.2 Data channel format . 10
5.4 User priorities . 13
5.5 Node ID . 14
5.6 IU . 14
6 Frame formats . 15
6.1 MAC general frame format . 15
6.1.1 General description . 15
6.1.2 MAC header . 15
6.1.3 MAC frame body . 18
6.1.4 Frame parity . 18
6.2 Management frames . 18
6.2.1 C-Beacon . 18
6.2.2 D-Beacon . 20
6.2.3 C-Req . 23
6.2.4 C-Ass . 25
6.2.5 S-Ras . 26
6.2.6 D-Req . 27
6.2.7 D-Res . 27
6.3 C-Frame . 27
6.4 D-Frame . 27
7 MAC functions . 28
7.1 General . 28
7.2 SmartBAN creation and connection initialization . 28
7.2.1 SmartBAN creation . 28
7.2.2 Connection initialization . 28
7.3 Channel access . 29
7.3.1 Scheduled channel access . 29
7.3.2 Slotted aloha channel access . 30
7.3.3 Multi-use channel access . 31
7.4 Supplementary downlink data transmission . 33
7.5 Slot reassignment . 34
7.6 Data channel migration . 35
8 MAC parameters. 36
Annex A (informative) Multi-use channel access . 37
Bibliography . 38

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IEC 63203-801-2:2022 © IEC 2022 – 3 –
Figure 1 – SmartBAN topology . 9
Figure 2 – Structure of Control Channel . 10
Figure 3 – Access periods in Data Channel . 11
Figure 4 – Scheduled access slot structure . 12
Figure 5 – Control and management slot structure . 12
Figure 6 – Multi-use access slot structure . 12
Figure 7 – Structure of an IU . 14
Figure 8 – MAC general frame format . 15
Figure 9 – MAC header format . 15
Figure 10 – Frame control format . 16
Figure 11 – C-Beacon frame format . 19
Figure 12 – D-Beacon frame format . 21
Figure 13 – C-Req frame format . 23
Figure 14 – C-Ass frame format . 25
Figure 15 – D-Req frame structure (hub to node) . 27
Figure 16 – Connection procedure . 29
Figure 17 – Scheduled channel access . 29
Figure 18 – Downlink data transmission illustration . 34
Figure 19 – Slot reassignment illustration . 34
Figure 20 – Scheduled period slot reassignment procedure . 35
Figure 21 – Example of Data Channel Migration (from #1 to #3) . 36
Figure A.1 – Flowchart of multi-use channel access . 37

Table 1 – Values of T . 13
MUA
Table 2 – List of user priorities . 13
Table 3 – Contention probabilities for different user priorities . 13
Table 4 – Node ID table . 14
Table 5 – Element ID for different operations . 14
Table 6 – Frame Type and Frame Subtype fields . 16
Table 7 – Table of IDs . 18
Table 8 – Slot Length field encoding . 19
Table 9 – Bit values for the Duty Cycling field . 20
Table 10 – Mapping of PHY Capability field . 24
Table 11 – IM field for allocation request IU . 24
Table 12 – IM field for allocation assignment IU . 26
Table 13 – IM field for S-Ras IU . 26
Table 14 – MAC parameters . 36

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– 4 – IEC 63203-801-2:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

WEARABLE ELECTRONIC DEVICES AND TECHNOLOGIES –

Part 801-2: Smart body area network (SmartBAN) –
Low complexity medium access control (MAC) for SmartBAN

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 63203-801-2 has been prepared by IEC technical committee 124: Wearable electronic
devices and technologies. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
124/198/FDIS 124/206/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

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IEC 63203-801-2:2022 © IEC 2022 – 5 –
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 63203 series, published under the general title Wearable electronic
devices and technologies, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

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– 6 – IEC 63203-801-2:2022 © IEC 2022
INTRODUCTION
TC 124 is developing International Standards (IS) for body area network (BAN) to define the
wireless connectivity between the hub coordinator and the sensing nodes. The IEC 63203-801
series consists of the following sub-parts, under the general part title "Smart body area network
(SmartBAN)":
IEC 63203-801-1: Enhanced ultra-low power physical layer
IEC 63203-801-2: Low complexity medium access control (MAC) for SmartBAN
The present document describes the medium access control (MAC) specifications including
channel structure, MAC frame formats and MAC functions.
This document originates from the corresponding technical specification (ETSI TS 103 325)
standardized in the European Telecommunication Standard Institute (ETSI) and captures the
results the work of IEC TC 124 Working Group 4 on devices and systems. The current document
reflects contributions and discussions by IEC TC 124 experts, mirror committees, liaison
members and Joint Advisory Group (JAG) between IEC SyC. AAL, IEC TC 100 and IEC TC 124.
This document contains material gathered from reports and group output from the IEC TC 124
meetings in May 2018 (Manchester), October 2018 (Busan), May 2019 (San Francisco),
September 2019 (Shanghai), November 2020 (online) as well as information obtained during
various web meetings.
Experts from the following national committees, liaison organizations have contributed: BE, CN,
DE, FI, FR, GB, IN, JP, KR, MY, NL, US and ETSI TC SmartBAN.
This document is also positioned as a result of the activities of the JAG. At the IEC General
Meeting in Busan in 2018, three committees related to wearable systems and technologies,
SyC. AAL, IEC TC 100 and IEC TC 124 had a joint workshop and agreed to collaborate to
develop relevant standards and to share roles. This collaboration agreement was advanced to
a Joint Advisory Group (JAG) and the JAG was established managed by SyC. AAL in 2019.
The target audience for this document includes the following stakeholders who have an interest
in the systems and services using wearable devices:
• consumer electronics (CE) and information communications technology (ICT) device
manufacturers;
• system integrators who want to utilize wearable device and technologies;
• service operators who are interested in the AAL systems and services;
• stakeholders who want to understand the technologies and requirements for wireless
connectivity between wearable sensor nodes and hub coordinators.

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IEC 63203-801-2:2022 © IEC 2022 – 7 –
WEARABLE ELECTRONIC DEVICES AND TECHNOLOGIES –

Part 801-2: Smart body area network (SmartBAN) –
Low complexity medium access control (MAC) for SmartBAN



1 Scope
This part of IEC 63203-801 specifies low complexity medium access control (MAC) for
SmartBAN.
As the use of wearables and connected body sensor devices grows rapidly in the Internet of
Things (IoT), wireless body area networks (BANs) facilitate the sharing of data in smart
environments such as smart homes, smart life, etc. In specific areas of digital healthcare,
wireless connectivity between the edge computing device or hub coordinator and the sensing
nodes requires a standardized communication interface and protocols.
The present document describes the following medium access control (MAC) specifications:
– channel structure;
– MAC frame formats;
– MAC functions.
2 Normative references
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.
IEC 63203-801-1:2022, Wearable electronic devices and technologies – Part 801-1: Smart body
area network (SmartBAN) – Enhanced ultra-low power physical layer
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
beacon
frame transmitted by a hub to facilitate network management, such as the coordination of
medium access and power management of the nodes in the SmartBAN, and to facilitate clock
synchronizationwith the hub
3.2
beacon period
duration during which a beacon is transmitted

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3.3
downlink
communication link for transfer of management and data traffic from a hub to a node
3.4
hub
entity that possesses a node’s functionality and coordinates the medium access and power
management of the nodes in the SmartBAN
3.5
inactive period
period in time following an active transmission sequence during which the equipment does not
transmit or receive
3.6
node
any entity conforming to the SmartBAN medium access control and physical interface to the
wireless medium
3.7
priority channel access
highest priority access during multi-use channel access
3.8
re-use channel access
priority access during multi-use channel access which enables re-use of scheduled but non-
utilised slots
3.9
scheduled access
one or more scheduled recurring time intervals that a node and a hub obtain using scheduled
access to initiate frame transactions
Note 1 to entry: A scheduled allocation is an uplink allocation or a downlink allocation suitable for servicing high or
low duty cycle periodic or quasi-periodic traffic on a committed schedule.
3.10
uplink
communication link for transfer of management and data traffic from a node to a hub
4 Abbreviated terms
ACK Acknowledgement
BAN Body area network
C-Ass Connection assignment
C-Beacon Control channel beacon
C-Frame Control frame
CRC Cyclic redundancy check
C-Req Connection request
D/SR Downlink/slot reassignment
D-Beacon Data channel beacon
D-Frame Data frame
D-Req Disconnection request
D-Res Disconnection response

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IEC 63203-801-2:2022 © IEC 2022 – 9 –
TM
EUI-48 Extended Unique Identifier-48 bits
FCS Frame check sequence
FEC Forward error correction
IFS Inter-frame spacing
IM Information module
ISM Industrial, scientific and medical
IU Information unit
MAC Medium access control
NACK Negative acknowledgement
NID Node ID
PHY Physical layer
REP Repetition coding
Rx Receive
S-Ras Slot reassignment
Tx Transmit
UL Uplink

5 General MAC framework
5.1 Different device types
Clause 5 provides the basic MAC framework for the nodes and hubs.
Two different device types can participate in SmartBAN:
1) sensor device (node); and
2) coordinator device (hub).
A hub is a device that acts as a SmartBAN coordinator. A node is any device that acts as an
information source or an information sink. One hub and at least one node constitute a SmartBAN.
A SmartBAN shall be organized into a star topology illustrated in Figure 1. It shall consist of at
least one node communicating directly with the hub.

Figure 1 – SmartBAN topology

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The hub and nodes shall communicate using communication media known as channels. A
SmartBAN shall use two different channel entities to enable communication between the hub
and nodes. The channel entities are assigned the following names:
– Data Channel
– Control Channel
Each SmartBAN shall utilise one Control Channel and one Data Channel at any one time.
5.2 Frequency spectrum
The frequency of operation shall fall between 2 401 MHz and 2 481 MHz. The channels shall
be arranged in blocks of 2 MHz with centre frequencies as follows:
f = 2 402 + 2 × n MHz, where n = 0 to 39.
c
The channels are
...