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08/01/2014
Wireless System Labs
22/04/2015
6LoWPANIPv6 LoW Power wireless Area Networks
Ulrich Rousseau : Wi6labs cofounder and CEO
Internet Of Things and Sensors Network
Pic source : http://www.ti.com/lsds/ti/wireless_connectivity/6lowpan/overview.page
Roebuck, Kevin“The Internet Protocol could and should be applied even to the smallest devices"
6Lowpan : what does it mean?
IPV6Addr : 128 bits
IPV4Addr : 32 bits
Low Power
Low Datarate
Low Cost6 Wireless Personal Area Networks
6LowPAN : stack evolution
Graphic via Ronak Sutaria and Raghunath Govindachari from Mindtree Labs in "Making sense of interoperability:Protocols and Standardization initiatives in IOT"
Sub 1GHz, BLE, CPL, Lora…
6LowPAN : IOT solution
Graphic via 6LoWPAN demystified
Problem : Is it possible to match IPV6 packet in 802.15.4 container ?
Solution : fragmentation and reassembly
IPV6 packet1280 Bytes
802.15.4 packet127 Bytes
6LowPAN : IOT solution
Graphic via 6LoWPAN demystified
Problem : optimizing the transmission of IPv6 packets over low-power and lossy networks
Solution : Header compression
IPV6 Header40 Bytes
802.15.4 Packet127 Bytes
6LowPAN : IOT solution
Problem : device address management require lot of message
Solution : Stateless Auto Configuration
Graphic via http://fr.wikipedia.org/wiki/6LoWPAN
6LowPAN : IOT solution
Problem : Routing
Solution : Mesh Over (Qos) and Mesh Under (Low latency)
Graphic via http://fr.wikipedia.org/wiki/6LoWPAN
6LowPAN : IOT solution
Problem : Routing
Solution : Build RPL tree (DODAG) and communicate through nodes
H path: F G C B A
6LowPAN : IOT solution
Problem : Security
Solution : Add security mecanism on network layer and application layer
Security Mecanism
App
TCP/UDP
IPV6
6LowPAN
802.15.4
DTLS
IPSec
LSEND
AES
6LowPAN : IOT solution
Problem : HTTP is chatty
Solution : REST request – COAP (Constrained Application Protocol)
Client
Server
/temperature
Get /Temperature200 OkApplication/text25°c
Rest request example
25°c
6LowPAN implementation example
RF Transceivers
SOC
STM32L15XSTM SPIRIT1
+6LowPAN Stack
6LowPan SP1ML module
868MHz
08/01/2014
Wireless System Labs
22/04/2015
Thanks!contact@wi6labs.com+33 (0)2 99 63 90 85www.wi6labs.com
@wi6labs
10 Rue de JouanetE-Park35700 RennesFrance
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