Presentation of 169 MHz Wize technology - Wize Alliance
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Presentation of 169 MHz Wize technology
A story marked by a strong desire to comply with standards
• WM-Bus protocol 1st module169MHz for GRDF decision to Publication of the first Release of version 1.0 EN13757/2018 release
release (433MHz and remote water metering choose the 169 MHz version of an application of the Wize protocol
868 MHz) band for its project and guide for Gas (application profiles
• Opening of the to integrate into Suez added)
HERMES range band technology: 169 MHz Publication of the
(169MHz) for remote band channelling, application guide at
meter reading in the bidirectionality, security AFNOR, application
broad sense. mechanisms and the guide for water and gas
development of a radio Setting up a Wize
modem in SDR mode Alliance Link – CEN
TC294
2005 2008 2012 2013 2017 2018
© 2019 - Copyright Wize Alliance - All rights reserved
A radio technology on the ISM 169MHz frequency
• Open and royalty-free frequency since 2003 (e. g. Hermès
band reserved for pagers)
• Open to the whole of Europe.
• Radio spectrum few used since it opened.
• Decision 2013/752/EU of 11 December 2013 amending
Decision 2006/771/EC on the harmonization of the use of
radio spectrum in the ISM bands
Band N° Frequency band Category of short-range Transmit power limit/field Additional parameters
devices strength limit/power (channelling and/or
density limit channel access and
occupation rules)
37b 169,4+169,475 MHz Metering devices 500 mW e.r.p. Channel spacing: max 50
kHz
Duty cycle limit: 10,0%
© 2019 - Copyright Wize Alliance - All rights reserved
Main features of Wize technology
Radio spectrum divided into 6 channels Bidirectional
Speaking time
(5 Up et 1 Down) connection
12,5 kHz
Pmax (mW)
500
F (MHz)
256 256 Duty Cycle: 10%
169,4 169,475 bytes bytes 6 min / hour
75 kHz
Scalable Modulations in Software Design
Speed Cryptage
Radio (GFSK and 4GFSK up to now)
Between 2400 AES 128 bits
and 6400 (evolving 256 bits)
bits/s
© 2019 - Copyright Wize Alliance - All rights reserved
A simple and efficient radio protocol
The possibility of reusing a 7-layer application profile already proposed by one of the Alliance members, or
the possibility of defining a proprietary application layer.
256 bytes maximum per up/down payload
Modèle OSI Protocole LAN
INSTPING 7 - Application APP-INSTALL, APP-ADMIN, APP-DOWNLOAD, APP-METER
INSTPONG 6 - Présentation PRES-EXCHANGE, PRES-DOWNLOAD
5 - Session
DATA
4 - Transport
COMMAND 3 - Réseau
RESPONSE 2 - Liaison LLC-EXCHANGE, LLC-DOWNLOAD
PHY-WM2400, PHY-WM4800, PHY-HSPEED
DOWNLOAD 1 - Physique
Canaux fréquentiels F1 F2 F3 F4 F5 F6
11 décembre
Sending 2015 Reception
of of
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data data
The mechanisms used to send orders to a device
The APP - ADMIN transmission mode, which is a unicast mode in "piggy-back"
Initialization by a transmission
APP – DATA.
1 At the end of APP – DATA,
Referent the device goes into listening mode.
Upon receipt of APP-DATA,
2 the referent gateway sends the command
Referent transmitted from the IS
The device sends an acknowledgement of
3 receipt / execution of the order, immediate or
Referent
delayed.
© 2019 - Copyright Wize Alliance - All rights reserved
Mechanisms used to download a device
The APP - DOWNLOAD transmission mode, which is a broadcast mode following an appointment
1 At the IS's initiative, the referent gateway sets up an appointment
Referent
with the device, via the APP - ADMIN mode.
At the scheduled appointment time, the referring gateway sends
2 Referent
the software to be downloaded by the device, in blocks of 256
bytes.
3 Referent The referent (or diffusion) gateway sends the software again, for
cases of partial or total non-receipt. 4 repetitions are performed.
4 The device sends an immediate or delayed acknowledgement of
receipt / execution of all transmitted files (APP-ADMIN mode).
Referent
© 2019 - Copyright Wize Alliance - All rights reservedA technology secured by design
IOT opens new areas of vulnerability
The use of radio makes it possible to
Objects integrate embedded software listen, usurp and replay
communications.
Gateway
Device
Kmac An authentication key is embedded in the device and
the gateway
Frames are encrypted by a key (128-bit AES) embedded in
Kenc the device. (several rotating keys in fact). A rotating number
Kchg on each frame makes it impossible to replay by listening.
In the case of downloading software, a specific key is
Klog transmitted to the device to protect the exchanges.
The devices carry a specific key or an authentication
certificate for exchanges with mobile tools that may be
Kmob used for local programming. This key and certificate
are also embedded in the mobile tool.
© 2019 - Copyright Wize Alliance - All rights reservedThe material aspects of an object connected in 169 Mhz.
A function of the use case to be processed.
• Several component manufacturers offer 169 MHz chipset, ultra-low power, for prices between
1.5€ and 3€ per 1000 parts.
• Radiocrafts proposes by the end of the year a module that includes a Texas Instrument chipset
and the Wize protocol layer.
• The typical consumption of these components is 10 to 30 mA in emission.
Example: Gazpar consumption profile.
• The energy dimensioning of a sensor: a compromise between functionality,
cost and lifetime.
• For a stand-alone sensor: The measuring step and transmission frequency,
combined with the characteristics of the batteries used and the operating
temperature profiles, determine the size of the battery required for the use
case.
• If the equipment is supplied with energy, then the functional achievable on a
radio infrastructure is limited to the available bandwidth... and the
criticality of the function to be performed.
© 2019 - Copyright Wize Alliance - All rights reservedWize is an operable or operated technology*
Two 169 MHz networks are currently operated in France, by GRDF and Suez.
Unit National
coverage Coverage
80% of the
population
77% of the
2019 2021 3 km
to
territory
5000 15 000 8 Km range
Antennas Antennas
© 2019 - Copyright Wize Alliance - All rights reservedA network deployment operated on a European scale And the opportunity to deploy private networks all over the world. © 2019 - Copyright Wize Alliance - All rights reserved
Wize technology adapts to various usage models
Private network Hybrid network Operated
network
Gateways = Gateways = Gateways =
Customer's Customer's operator's
property property property
+ + +
Own operation Operation Operation
operated by operated by
GrDF and/or GrDF and/or
Suez Suez
© 2019 - Copyright Wize Alliance - All rights reservedWize is a technology well adapted to telemetry and geolocation applications for
"buried" industrial objects.
Customer
Ambient sensors Smart city Utilities Surveillance Smart port
satisfaction
Temperature / Quality of
Air quality Water Opening JKL
Humidity water buoy
Network of Container
Smoke/Gas Ambient noise Vibration
heat / cold Tracking
Predictive
Parking Gas
maintenance
Lighting Electricity
Industrialized or
Waste products Liquid or solid prototyped by April
containers 2019
© 2019 - Copyright Wize Alliance - All rights reserved© 2019 - Copyright Wize Alliance - All rights reserved 14
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