SIST EN 14908-9:2021

SLOVENSKI STANDARD
SIST EN 14908-9:2021
01-november-2021
Odprta izmenjava podatkov v avtomatizaciji stavb, regulaciji in upravljanju stavb -
Protokol regulacijske mreže - 9. del: Brezžična komunikacija v pasu ISM
Open Data Communication in Building Automation, Controls and Building Management -
Control Network Protocol - Part 9: Wireless Communication in ISM bands
Firmenneutrale Datenkommunikation für die Gebäudeautomation und
Gebäudemanagement - Steuerungs-Netzwerk-Protokoll - Teil 9: Drahtlose
Kommunikation im ISM Band
Réseau ouvert de communication de données pour l’automatisation, la régulation et la
gestion technique du bâtiment - Protocole de contrôle du réseau - Partie 9 :
Communication sans fil dans les bandes ISM
Ta slovenski standard je istoveten z: EN 14908-9:2021
ICS:
35.240.67 Uporabniške rešitve IT v IT applications in building
gradbeništvu and construction industry
97.120 Avtomatske krmilne naprave Automatic controls for
za dom household use
SIST EN 14908-9:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 14908-9:2021

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SIST EN 14908-9:2021


EN 14908-9
EUROPEAN STANDARD

NORME EUROPÉENNE

September 2021
EUROPÄISCHE NORM
ICS 91.140.01; 97.120; 35.240.67
English Version

Open Data Communication in Building Automation,
Controls and Building Management - Control Network
Protocol - Part 9: Wireless Communication in ISM bands
Réseau ouvert de communication de données pour Firmenneutrale Datenkommunikation für die
l'automatisation, la régulation et la gestion technique Gebäudeautomation und Gebäudemanagement -
du bâtiment - Protocole de contrôle du réseau - Partie Steuerungs-Netzwerk-Protokoll - Teil 9: Drahtlose
9 : Communication sans fil dans les bandes ISM Kommunikation im ISM Band
This European Standard was approved by CEN on 8 July 2021.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14908-9:2021 E
worldwide for CEN national Members.

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Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Abbreviations . 7
5 Overview of ISM RF in EN 14908 based systems . 8
5.1 General. 8
5.2 ISM RF radio communication introduction . 8
5.2.1 Architecture . 8
5.2.2 ISM RF radio network elements . 9
5.3 ISM RF functional overview . 10
6 Control Network protocol information flows mapping to ISM RF . 11
6.1 General. 11
6.2 Address mapping principles . 11
6.3 Broadcast messages flows . 12
6.3.1 Messages from other segments of CNP network . 12
6.3.2 Messages from CNP application layers. 13
6.4 Unicast message flows . 13
6.4.1 Messages from CNP network . 13
6.4.2 Messages from RF node . 14
6.5 Multicast . 15
6.5.1 Messages from CNP network . 15
6.5.2 Messages from RF Node . 16
7 ISM RF radio network services to CNP applications . 17
7.1 General. 17
7.2 Attributes . 17
7.3 RF node addressing . 17
7.4 RF-DSAP Services . 18
7.4.1 Overview . 18
7.4.2 RF-DSAP-DATA_TX.request . 19
7.4.3 RF-DSAP-DATA_TX.confirm . 21
7.4.4 RF-DSAP-DATA_TX.indication . 21
7.4.5 RF-DSAP-DATA_RX.indication . 22
7.4.6 RF-DSAP-DATA_TX/RX.response . 23
7.5 RF-CSAP Services . 23
7.5.1 Overview . 23
7.5.2 RF-CSAP-ATTRIBUTE_WRITE.request . 23
7.5.3 RF-CSAP-ATTRIBUTE_WRITE.confirm . 26
7.5.4 RF-CSAP-ATTRIBUTE_READ.request . 27
7.5.5 RF-CSAP-ATTRIBUTE_READ.confirm . 27
7.6 Radio link layer security . 27
Annex A (normative) ISM RF Radio characteristics . 28
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A.1 General requirements . 28
A.2 Supported operating frequency bands . 28
Bibliography . 29

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European foreword
This document (EN 14908-9:2021) has been prepared by Technical Committee CEN/TC 247 “Building
Automation, Controls and Building Management”, the secretariat of which is held by SNV.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2022, and conflicting national standards shall
be withdrawn at the latest by March 2022.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document is part of a series of European Standards for open data transmission in building
automation, control and in building management systems. The content of this document covers the data
communications used for management, automation/control and field functions. This document is based
on the American standards EIA/CEA-709.1-B Control Network Protocol Specification.
This document is part of a series of European Standards under the general title Open Data
Communication in Building Automation, Controls and Building Management — Control Network Protocol,
which comprises the following parts:
— Part 1: Protocol Stack
— Part 2: Twisted Pair Communication
— Part 3: Power Line Channel Specification
— Part 4: IP-Communication
— Part 5: Implementation
— Part 6: Application elements
— Part 7: Communication via internet protocols
— Part 8: Communication using Broadband over Power Line Networks — with internet protocols
— Part 9: Wireless Communication in ISM bands (this document)
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
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Introduction
This document enables utilization of wireless communication in the general title Control Network
Protocol (CNP) in the EN 14908 series. The wireless communication can provide fast and easy system
deployment, robust, de-centralized and autonomous network operation for EN 14908 based
applications.
Wireless communication is defined to operate in ISM bands, which are licensed exempt bands available
either regionally or globally.
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1 Scope
This document specifies an adaptation layer for the control network protocol (CNP), as described in
EN 14908-1 to utilize wireless communication network. This document defines the services of the
wireless communication provided to CNP layer for delivering data and commands towards and from
sensors, actuators, etc. which are wirelessly connected as part of the EN 14908-1 network.
In addition, this document defines the requirements for the radio communication applicable for CNP
layer operation.
For the radio communication different frequency bands can be utilized. Annex A defines requirement
for operation in different frequency bands.
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.
EN 14908-1:2014, Open Data Communication in Building Automation, Controls and Building
Management - Control Network Protocol - Part 1: Protocol Stack
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 14908-1 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
ISM RF radio layer
layer used for radio communications in ISM RF 14908-9 system
Note 1 to entry: Higher layers of the EN 14908-1 can access ISM RF radio layer based on interface defined in
Clause 7.
3.2
RF gateway
entity which has a backhaul connection for data delivery to the wireline CNP network
Note 1 to entry: The RF gateway operates as sink of ISM RF radio network, providing a root of routing, which in
multi-hop network RF nodes are directing traffic.
3.3
RF node
physical node capable of wireless communication that represents the highest degree of address
resolvability on a wireless network
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4 Abbreviations
AES Advanced Encryption Standard
APDU Application layer Protocol Data Unit
ARQ Automatic Repeat Request
CBC-MAC Cipher Block Chaining MAC algorithm
CMAC cipher-based Message Authentication Code
CNP Control Network Protocol
CTR Counter Mode
CRC Cyclic Redundancy Check
ISM Industrial Scientific and Medical
LPDU Link Protocol Data Unit, or frame as defined according to EN 14908-1:2014, 6.5
NPDU Network Protocol Data Unit, or packet as defined according to EN 14908-1:2014, 8.5
OMAC1 One-Key CBC-MAC
PDUID Protocol Data Unit ID
QoS Quality of Service
RF Radio Frequency
RF-CSAP RF Control Service Access Point
RF-DSAP RF Data Service Access Point
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5 Overview of ISM RF in EN 14908 based systems
5.1 General
The overall protocol architecture of the ISM RF in EN 14908 based system is depicted in Figure 1. The
higher layer protocols of EN 14908-1 can access to the ISM RF radio protocols via open interfaces as
specified in Clause 7. Annex A defines requirements for ISM RF radio protocol layers.

Figure 1 — Protocol layering
5.2 ISM RF radio communication introduction
5.2.1 Architecture
The radio communication solution for ISM RF radio communication is based on decentralized RF node
to RF node communication network architecture as depicted in Figure 2. This enables ISM RF radio
communication, to support deployments where some RF nodes are located outside of RF gateway radio
coverage. The RF-node is capable of local decision making related to data routing, used transmission
power, and used transmission time and frequency.
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Key
Router, EN 14908-1

Node, EN 14908-1

RF Gateway

RF Node

ISM RF radio network

Figure 2 — ISM RF radio network and connection to other segments of CNP network
RF nodes are routing data towards the sink of the ISM RF radio network, which is in the RF gateway.
The RF gateway delivers the data to the back-end network. There can exist one or multiple RF gateways
operating as sink in single ISM RF network. However, transmitting data between two CNP routers via
ISM RF network is not supported. To support different application requirements ISM RF radio
communication supports different operating radio modes as defined in Annex A.
5.2.2 ISM RF radio network elements
5.2.2.1 RF gateway
The RF gateway is the data concentration point, i.e. sink, in the ISM RF radio network, which provides
the backhaul connectivity to the rest of the CNP network via a CNP router. There is one to one mapping
between single RF gateway and CNP router as depicted in Figure 3. The interface between CNP router
and RF gateway is not defined.
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Figure 3 — Logical One-to-One relation between RF gateway and CNP router
The RF gateway shall have both backhaul and ISM RF radio connectivity. ISM RF gateway operates as a
sink, by collecting the data from underlaying ISM RF radio network and routes received data to
backhaul interface CNP router. RF gateway also transmits data received from CNP router towards the
RF nodes inside the ISM RF radio network. ISM RF radio network can support multiple RF gateways in
the same network.
5.2.2.2 RF node
All RF nodes in a single ISM radio network can be the same. An RF node is capable to decide to which
neighbouring RF node it shall send its data that is to be routed to RF gateway.
Data can be generated by RF node itself or received from neighbouring RF node.
Additionally, RF node is capable to decide to which neighbouring RF nodes it shall transmit data
transmitted from RF gateway to the RF node(s). Each RF node may dynamically change its routing to
adapt changing environment and possible communication load variations. The decision of RF node
routing may be done locally based on available information from environment and desired operational
mode.
5.3 ISM RF functional overview
The ISM RF radio network may consist of RF nodes belonging into one or different CNP subnets,
however the data routing in radio may not use subnets. Single CNP subnet shall not include nodes inside
and outside single ISM RF radio network.
The ISM RF network supports following transmission modes:
— Broadcasting;
— Unicasting;
— Multicasting.
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6 Control Network protocol information flows mapping to ISM RF
6.1 General
The ISM RF network supports manual and/or automatic RF node and RF gateway configuration.
In manual configuration following parameters are configured to RF node and RF gateway before
operation in ISM RF radio network:
— ISM RF Network ID;
— All addressed defined in 6.1;
— Security parameters for ISM RF network.
In automatic configuration following parameters are configured to RF node and RF gateway before
operation in ISM RF radio network:
— ISM RF network ID;
— Security parameters for ISM RF network;
— Temporary ISM radio network unicast address (4 octets) which RF node and RF gateway replaces
as defined in 6.1, when obtaining subnet identifier and node number.
The 7.5 defines means to configure the RF node and RF gateway this configuration can be done by CNP
network or done by other means.
6.2 Address mapping principles
Each ISM RF Node and RF gateway shall have following addresses:
— Unique Node Id (48 bits) as defined according to EN 14908-1;
— Domain Id (0/8/24/48) bits as defined according to EN 14908-1, which is set to same value for all
ISM RF nodes and RF gateways in single ISM network;
— One subnet identifier (8 bits) and one node number (7 bits) that is unique inside the subnet as
defined according to EN 14908-1;
— One or multiple group identifier (8 bits) as defined according to EN 14908-1;
— ISM radio network unicast address (4 octets) as defined in Table 1.
The subnet identifier, node number and ISM radio network unicast address shall be set in ISM RF node
and ISM RF gateway configuration as follows:
— The second last octet of ISM radio network unicast address shall be set to same bit sequence as
subnet identifier;
— The seven (7) LSBs of the ISM radio network unicast address shall be set to same bit sequence as
node number.
If ISM RF node or ISM RF gateway belongs to one or multiple groups defined according to EN 14908-1,
the group identifier is set to ISM RF node as follows:
— The most significant octet of the ISM radio network multicast address is set to 0x8 and the last octet
of the address is set to same bit sequence as group identifier according to EN 14908-1.
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Additionally, RF node and RF gateway has following addresses configured:
— All subnet identifiers used to configure RF nodes inside ISM RF network;
— All group identifiers used configure RF nodes only inside ISM RF network.
The RF node and RF gateway shall form subnet-list from configured subnet identifiers.
The RF node RF gateway shall form group-list from configured group identifiers.
6.3 Broadcast messages flows
6.3.1 Messages from other segments of CNP network
When ISM RF gateway receives CNP broadcast frame from backhaul link, the adaptation layer in ISM RF
gateway shall execute the following:
— utilize RF-DSAP-DATA_TX.request primitive to transmit broadcast frame ISM radio network by
using broadcasting and set primitives as follows:
—PDUID: as defined in Table 3;
— SourceEndPoint: as defined in 7.3;
— DestinationAddress: Broadcast as defined in Table 1;
— DestinationEndPoint: as defined in 7.3;
— if Prior bit is set to 0 in LPDU/MPDU of EN 14908-1, set:
— QoS: 0x00 else set:
— QoS: 0x01;
— TXoptions: as defined in Table 3;
— BufferingDelay: as defined in Table 3;
— APDULength: Length of the NPDU;
— APDU: NPDU;
— use own ISM radio network unicast address as source ID;
— procedure ends;
NOTE If there are multiple RF gateways in single ISM radio network each RF gateway operates
independently.
When ISM RF node receives broadcasted frame, the ISM RF node shall execute the following:
— utilize RF-DSAP-DATA_TX.request primitive to deliver received broadcast frame to upper layers;
— procedure ends.
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6.3.2 Messages from CNP application layers
When ISM RF node receives CNP broadcast frame from its CNP application layer, the adaptation layer in
ISM RF node shall execute the following:
— utilize RF-DSAP-DATA_TX.request primitive to transmit broadcast frame ISM radio network by
using broadcasting and set primitives as follows:
— PDUID: as defined in Table 3;
— SourceEndPoint: as defined in 7.3;
— DestinationAddress: Broadcast as defined in Table 1;
— DestinationEndPoint: as defined in 7.3;
— if Prior bit is set to 0 in LPDU/MPDU, of EN 14908-1, set:
— QoS: 0x00, else set:
— 0x01;
— TXoptions: as defined in Table 3;
— BufferingDelay: as defined in Table 3;
— APDULength: Length of the NPDU;
— APDU: NPDU;
— use own ISM radio network unicast address as source ID;
— procedure ends.
When ISM RF gateway receives broadcasted frame, the ISM RF gateway shall execute the following:
— utilize RF-DSAP-DATA_TX.request primitive to deliver received broadcast frame to upper layers;
— transmit received frame to backhaul link;
— procedure ends.
When ISM RF node receives broadcasted frame, the ISM RF node shall execute the following:
— utilize RF-DSAP-DATA_TX.request primitive to deliver received broadcast frame to upper layers;
— procedure ends.
6.4 Unicast message flows
6.4.1 Messages from CNP network
When ISM RF gateway receives CNP unicast frame from backhaul link, the adaptation layer in ISM RF
gateway shall execute the following:
— utilize RF-DSAP-DATA_TX.request primitive to transmit unicast frame ISM radio network by using
unicasting by setting primitives as follows:
— PDUID: as defined in Table 1;
— SourceEndPoint: as defined in 7.3;
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— DestinationAddress: unicast address as defined in Table 1, and based on address mapping
defined in 6.1;
— DestinationEndPoint: as defined in 7.3;
— if Prior bit is set to 0 in LPDU/MPDU of EN 14908-1, set:
— QoS: 0x00 else set:
— QoS: 0x01;
— TXoptions: as defined in Table 3;
— BufferingDelay: as defined in Table 3;
— APDULength: Length of the NPDU;
— APDU: NPDU;
— use own ISM radio network unicast address as source ID;
— procedure ends.
When ISM RF node receives unicast frame, with own destination address, the ISM RF node shall execute
the following:
— utilize RF-DSAP-DATA_TX.request primitive to deliver received unicast frame to upper layers;
— procedure ends.
6.4.2 Messages from RF node
When ISM RF node receives CNP unicast frame from its CNP application layer, the adaptation layer in
ISM RF node shall execute the following:
— utilize RF-DSAP-DATA_TX.request primitive to transmit unicast frame ISM radio network by using
unicasting and set primitives as follows:
— PDUID: as defined in Table 3;
— SourceEndPoint: as defined in 7.3;
— If destination subnet address is included in subnet-list, set;
— DestinationAddress: unicast address as defined in Table 1, and based on address mapping
defined in 6.1, else set:
— DestinationAddress: AnySink address as defined in Table 1;
— DestinationEndPoint: as defined in 7.3;
— If Prior bit is set to 0 in LPDU/MPDU of EN 14908-1, set:
— QoS: 0x00 else set:
— 0x01;
— TXoptions: as defined in Table 3;
— BufferingDelay: as defined in Table 3;
— APDULength: Length of the NPDU;
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— APDU: NPDU.
— use own ISM radio network unicast address as source ID;
— procedure ends.
When ISM RF gateway receives unicast frame, the ISM RF gateway shall execute the following:
— utilize RF-DSAP-DATA_TX.request primitive to deliver received frame to upper layers;
— transmit received frame to backhaul link;
— procedure ends.
When ISM RF node receives unicast frame, with own destination address, the ISM RF node shall execute
the following:
— utilize RF-DSAP-DATA_TX.request primitive to deliver received unicast frame to upper layers;
— procedure ends.
6.5 Multicast
6.5.1 Messages from CNP network
When ISM RF gateway receives CNP multicast frame from backhaul link, the adaptation layer in ISM RF
gateway shall execute the following:
— Utilize RF-DSAP-DATA_TX.request primitive to transmit multicast frame ISM radio network by
using multicasting and set primitives as follows:
— PDUID: as defined in Table 3;
— SourceEndPoint: as defined in 7.3;
— DestinationAddress: multicast address as defined in Table 1, and based on address mapping
defined in 6.1;
— DestinationEndPoint: as defined in 7.3;
— if Prior bit is set to 0 in LPDU/MPDU of EN 14908-1, set:
— QoS: 0x00 else set:
— QoS: 0x01;
— TXoptions: as defined in Table 3;
— BufferingDelay: as defined in Table 3;
— APDULength: Length of the NPDU;
— APDU: NPDU.
— use own ISM radio network unicast address as source ID;
— procedure ends.
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When ISM RF node receives multicast frame, with own multicast address, the ISM RF node shall execute
the following:
— utilize RF-DSAP-DATA_TX.request primitive to deliver received multicast frame to upper layers;
— procedure ends.
6.
...