October 24th, 2019

LUWAN

PRESENTATION

ETSI IOT WORKSHOP

©TRAXENS 2019 - All Rights Reserved

AGENDA

▪ CONTAINER MONITORING & TRACKING USE CASE

▪ WHAT IS TRAXENS-NET WSN ?

▪ TRAXENS-NET -

▪ TOPOLOGY

▪ OBJECTIVES

▪ FEATURES

▪ CLUSTERING ELECTION SCHEME

▪ MULTI-HOP RELAY

▪ LPWAN TECHNOLOGIES

▪ LUWAN for 5G

▪ SUMMARY TABLES

2

©TRAXENS 2019 - All Rights Reserved3

TRAXENS CONTAINER MONITORING

& TRACKING USE CASE

ENVIRONMENTAL CONDITIONSWITH T° BETWEEN -40°C AND +85°C

5 % S T O C K L O S T

E A C H Y E A R D U E T O

L E A K A G E C U R R E N T

AVERAGE DAILY

PROFILE GIVES2 POSITIONS , 2 CLOUD

CONNECTIONS FOR

2500 BYTES PER DAY

AVERAGE ENERGY

COST OF 2 CLOUD CONNECTIONS

IS 84 JOULES PER DAY

2 GEOLOCATIONS IS

26 JOULES PER DAY

B O XLIFECYCLE

5 Y E AR S

INITIALENERGY S T O C K O F

337KJ.

C E L L U L A R M O D E M

(2G, 3G, 4G) OFF,

AND ON WHEN CONNECTION TOT H E C L O U D I S N E E D E D

ENERGY COST OF MCU, RTC,SENSORS,ETC.

IS 52 JOULES PER DAY

153.5 + 47.5 + 95

=

296 KJ > 253 KJ

52% ARE

DRAINED BY COMMUNICATIONS.

©TRAXENS 2019 - All Rights Reserved4

WHAT IS TRAXENS-NET

WSN ?

0

10

20

30

40

50

60

1 5 10 15 20 25 30 35 40 45 50 55 60

Ener

gy C

on

s p

er n

od

e[J

ou

les/

day

]

Cluster (number of nodes)

Energy consumption vs Number of nodes

Cellular

Cellular + TN

TRAXENS-NET enables end-devices to share their connectivity and energy resources and to cooperate to deliver their data to the cloud using a permanent gateway or another end-device acting as a temporary gateway.

©TRAXENS 2019 - All Rights Reserved5

TRAXENS-NET

TOPOLOGY

CAMPUS NOMADIC

HIERARCHICAL SCHEME

TRAXENS-NET implements a hierarchical scheme consisting of 4 types of nodes:

▪ HEAD the gateway

▪ MEMBER single hop

▪ AFFILIATEmulti-hop

▪ LOOSE seeking for a cluster

©TRAXENS 2019 - All Rights Reserved6

TRAXENS-NET

OBJECTIVES

Extension of the network coverage thanks to 2km line-of-

sight communication range and multi-hop capabilities.

Extension of the battery lifetime by

minimizing the number of cellular

connections thanks to the election

scheme and the clustering mechanism.

©TRAXENS 2019 - All Rights Reserved7

TRAXENS-NET

FEATURESThe Election scheme permits to elect one or few

nodes in charge of collecting the data from nearby

nodes and sending it to the cloud.

The Clustering scheme groups nodes in clusters

managed by a leader in order to improve the scalability

of the network.

Acknowledgments are employed at different levels of

the protocol to ensure the delivery of the data at the

destination.

The multi-hop communication permits to extend the

network coverage to nodes out of the radio coverage of

the cellular network.

The use of Sub-GHz bands ensures an efficient

propagation of radio signals in metallic environements.

Bi-directional communications permit the flow of the

data not only from the devices to the cloud but also

from the cloud to the devices.

The AGFS system detects the correct frequency band

to employ according to the current position and the

radio regulations in force.

The Wake-on-Radio (WoR) enables nodes to

permanently listen to the radio channels with an ultra-

low energy consumption.

The organization of the network and all maintenance

operations are automatic and transparent to the users.

The network communications are secured by an

internodes mutual authentication based on a private

128 bits AES key.

©TRAXENS 2019 - All Rights Reserved8

CLUSTERING ELECTION SCHEME

TO EXTEND BATTERY LIFE

• TRAXENS-NET minimizes the negative

impact of communication overhead on

energy budget.

• Example: energy budget drained by

communication is decreased by 58%

with a cluster of 5 nodes:

• 35 joules per day with TRAXENS-NET,

• 84 joules per day without TRAXENS-NET.

©TRAXENS 2019 - All Rights Reserved9

MULTI-HOP RELAY TO EXTEND

LTE COVERAGE & QOS3 benefits when LTE coverage is:

▪ GOOD reduced energy budget

▪ POOR good QoS with a controlled energy budget.

▪ NULL extended coverage, always with a good QoS and limited energy budget.

HEAD

MEMBER

AFFILIATE

GOOD

POOR

NULL

LTE coverage

©TRAXENS 2019 - All Rights Reserved10

LPWAN TECHNOLOGIES

COMPARISON

LINK BUDGET (DB) 156 (100bps) 154 (SF12) 154 (CE-1)

DUTY CYCLE LIMITATIONS Yes (1%) Yes (1%) No

MESSAGE PAYLOAD (BYTE) 12 38 1250

MESSAGE ACK No Yes Yes

COST PER MESSAGE (JOULE) 0.84 0.3 14

NB OF MESSAGE PER DAY 140 max. 66 2

TOTAL PAYLOAD (BYTE) 1680 2508 2500

TOTAL COST PER DAY (JOULE) 117.6 19.8 28

©TRAXENS 2019 - All Rights Reserved11

LUWAN for 5G THE BEST OF THE 2 WORLDS !

▪ LUWAN = (TRAXENS-NET + NB-IOT + LTE-M) in one SKU.

▪ Seamless integration of TRAXENS-NET WSN properties within 5G protocols LTE-M & NB-IoT:▪ Up to 50% energy budget reduction for

communications with the cloud.▪ Coverage extension for devices on “cellular edge”.

▪ Bring to 5G IoT devices the same benefits than those achieved for 2G, 3G and 4G devices.

LUWAN

©TRAXENS 2019 - All Rights Reserved12

TRAXENS.NET

SUMMARY TABLESPARAMETER VALUE

FREQUENCY BANDS: 433MHz / 866MHz / 921MHz

DATA RATE: 20 Kbps

MODULATION: GMSK

TX POWER: 13dBm

LISTENING MODE: Ultra-low power Wake-on-Radio (WoR)

WOR CONSUMPTION: 25 μA

MEDIUM ACCESS METHOD: CSMA/CA + Frequency hopping

SENSITIVITY: -110dBm

HOPPING CHANNELS: Up to 68 (100KHz)

THROUGHPUT: 8.8 Kbps

ACKNOWLEDGEMENTS: Yes, Full

COMMUNICATION MODES: Peer-to-Peer (P2P), Broadcasting

PARAMETER VALUE

ROUTING ALGORITHM: Cluster-based WSN

COMMUNICATION MODE Multi-hop (up to 9 hops)

NODE HARDWARE ARCHITECTURE Homogeneous

NETWORK MANAGEMENT Fully automatic

CLUSTER-HEAD ELECTION Yes

CLUSTER-HEAD ROTATION Yes

DATA AGGREGATION Yes (MEMBER level)

HEAD CLUSTER CAPACITY 250 MEMBER nodes

MEMBER HOSTING CAPACITY 16 AFFILIATE nodes

TRANSMISSION LATENCY MEMBER: less than 0.5s

AFFILIATE: 1 second per hop

DATA PACKET PAYLOAD 2500 Bytes

Q&A

Pascal DARAGON

Technical Director

TRAXENS.WAN

p.daragon@traxens.com

Philippe Moretto

Marketing Director

TRAXENS.WAN

p.moretto@traxens.com

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