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Testing and solving the Wi-Fi Interference on Zigbee Partner: NEC Germany HGI (Home Gateway Initiative ). Client2. Client1. 3 m. 3 m. ZED ( Pos 4). AP1. AP2. 3 m. ZC. ZED ( Pos 2). ZED ( Pos 1). ZED ( Pos 3). Client2. Client3. Client1. 3 m. 3 m. - PowerPoint PPT Presentation
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Testing and solving the Wi-Fi Interference on Zigbee
Partner: NEC Germany HGI (Home Gateway Initiative)
2405 2410 2415 2420 2425 2430 2435
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2484
MHz
2405 2410 2415 2420 2440 2445 2450 2455 2460 2465 2470
MHz
22 MHz
2412 2417 2422 2427 2432 2442 2447 2452 2457 2462 2467 2472
CH 6, 2437
40 MHz
2405 2410 2415 2420 2425 2430 2435
2440 2445 2450 2455 2460 2465 2470 2475 2480
2484
MHz
2405 2410 2415 2420 2425 2430 2440 2445 2450 2455 2460 2465 2470
MHz
2412 2417 2422 2427 2432 2442 2447 2452 2457 2462 2467 2472
CH 6, 2437
40 MHz
6
TCP/IP
DLMS
TCP/IP
TCP/IP
WEBService
WEBService
Database
Database
Database
PIATTAFORMA RIGERS
Data Center Servizio 2
DATA CENTER CPL
CONCENTRATOREDI COMPARTO
169 MHz
WMBUS - DLMS
Concentr.Edificio
Concentr.Edificio
Concentr.Edificio
TCP/IP
CTR
PUBBLICA ILLUMINAZIONE + VIDEO SORVEGLIANZA
UTENZE INDUSTRIALI
POSSIBILI SCENARI: CONCENTRATORE DI EDIFICIO 2/2
Scenario Elements• District Concentrator (DC)
– Equipped with W M-BUS, Wi-Fi, 5G and Zigbee
• Building Concentrator (BC)– Equipped with W M-BUS, Wi-Fi and Zigbee
• Bus – Equipped with Wi-Fi and Zigbee
• Car (driver)– Equipped with Wi-Fi and 5G
• People– Equipped with Wi-Fi and 5G
8
District Concentrator
DTN• Smart Building Each building is equipped with smart devices in order to monitor the consumptions in terms of gas / electricity / water. A Building Concentrator (BC) gathers data from devices in the building and then it has to send them to the District Concentrator (DC). A point-to-point connection between the BC and the DC will be present through wireless M-BUS at 169 MHz, however being the density of DCs much lower than the density of BCs, an alternative link will be created by exploiting the presence of objects moving in the city (DTN paradigm).
• Objects– Buses, Cars and People may act as mules, to help BCs to reach one DC
9
Possible Contacts/Communication among elements
10
District Concentrator
5G/Wi-Fi
Zigbee/Wi-Fi
5G/Wi-Fi
W M-Bus
Zigbee
5G/Wi-Fi
Wi-Fi
Wi-FiWi-Fi
12
169 MHzWMBUS - DLMS
TERMIE
ACQUA
GAS
CONCENTRATORE DI
EDIFICIO
868 MHz
WiFi - BLUETHOOTH
WMBUS
WEB
WMBUS
IN HOME SMART BRIDGE
NFC
GAS SMART BRIDGE
IN HOME DISPLAY (OPZIONALE)
SERVIZI OPZIONALI
ELETTRICO
868 MHz
WMBUS
868 MHz
WMBUS868 MHz
RIPARTITORE DI CALORE
SENSORIMONITORAGGIO EDIFICIO ED AMBIENTALE
169 MHzWMBUS - DLMS
ZIGBEE??
169 MHz ??
169 MHz ??
BUILDING
FOTOVOLTAICO
IoT / IwT: two paradigms• Internet with Things
13
• Internet of Things
WSN
Gateway /Bridge
IP based Network
SERVER
Zigbee or SDWN
802.15.4 MAC address WSN
Gateway /Bridge
IP based Network
SERVER
6LowPAN
IPv6address
Gateway / Coordinator
Gateway / Coordinator
IwT: comparison• Zigbee-based protocols
14
• SDWN solution
WSN
Gateway /Bridge
IP based Network
SERVER
Zigbee
802.15.4 MAC address WSN
Gateway /Bridge
IP based Network
SERVER
SDWN
802.15.4 MAC address
ControllerGateway / Coordinator
Gateway / Coordinator
IoT / IwT: comparison• Protocols stacks
15
IEEE 802.15.4 PHY
IEEE 802.15.4 MAC
SDWN ZIGBEE
Adaptation Layer
IPv6
UDP
Application
Protocols for the IoT: metrics and traffics
16
• Traffic: Query-based APPs– Unicast – Broadcast – Multicast
• Metrics:
– Average delays – Overhead– PER
Zigbee: Many-to-One routing
17
Node 3
Node 2
Coord
Node 1Node 5
Node 4
MTO RREQ (broadcast)
Route Record node 5 (unicast)
MTO RREQ 3
MTO RREQ 4
MTO RREQ 5
MTO RREQ 2
MTO RREQ 1
RREC
MTO RREQ Coord
6LowPAN: RPL routing
18
Node 3
Node 2
Coord
Node 1Node 5
Node 4
DAG Information Option (DAG) (broadcast)Destination Advertisement Object (DAO) node 5 (unicast)
DIO 3
DIO 4
DIO 5
DIO 2
DIO 1
DAO
DIO Coord
SDWN
19
Node 3
Node 2
Coord
Node 1Node 5
Node 4Beacon 3
Beacon 4
Beacon 5
Beacon 2
Beacon 1
Beacon Coord
Rule Response
Rule Request
Route to Coord
Controller
Virtualization
Adaptation
Controller