3-12531-Embedded World Session WiSUN V1.5-Louis_final.pdf

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1、How to Design Smart City Applications With Wi-SUNLouis Lou,Staff FAEAbstractSession 1.5:How to design smart city applications with Wi-SUNTo reach sustainability goals and elevate city services,cities are investing in technology that helps them save money,improve quality of service and life.Large-sca

2、le smart city,utilities,and industrial IoT applications rely on dense,low-power wireless outdoor networks.Wi-SUN brings Smart Ubiquitous Networks by enabling interoperable,multi-service and secure wireless mesh networks.The open standards-based network technology enables interoperable,multi-service

3、and secure wireless LPWAN connectivity with self-forming,self-healing mesh network support.With multi-layered IP security,Wi-SUN provides encrypted communications and safe device authentication.Per the high-data throughput and IPv6 support,Wi-SUN offers a complete development ecosystem to meet the d

4、emand of expanding cities and suburban areas.Silicon Labs supports Wi-SUN as the ideal technology for scalable and flexible implementation for smart city and metering applications,and is driving Wi-SUN deployments for electric vehicle(EV)charging,smart solar photovoltaic(PV)systems,and battery stora

5、ge applications.As a result,millions of endpoints are being connected across large-scale,long-range LPWAN networks while helping utilities,city planners,and consumers manage their carbon footprint.34 minWhat is Wi-SUN?4 minWi-SUN Network Architecture4 min Designing your Smart City Application4 minSe

6、lecting the Right Partner4 minGetting Certified2022 Silicon Laboratories Inc.All rights reserved.How to design smart city applications with Wi-SUNWhat is Wi-SUN?Wi-SUN,Wireless Smart Ubiquitous Network5Proprietary ProtocolsLack Of Interoperability Non-IP Based Limited Security Silicon Labs Promoter

7、Member46 Countries 300+Members 100+Million Devices DeployedINITIAL PROBLEMWI-SUN ALLIANCEOPEN Standards BasedInteroperable IPv6/6LoWPAN Mandatory SecurityFSK,OFDMPHY Certification FAN Profile Certification6 Independent Test Houses50 FAN Certified Products FAN SPECIFICATIONCERTIFICATION2022 Silicon L

8、aboratories Inc.All rights reserved.Wi-SUN NetworkArchitectureNetwork TopologySelf forming and self healing meshFSK and OFDM support50-300 Kbps FSK and Max 2.4 Mbps in case of OFDMDevice TypesBorder RouterProvides WAN connectivity to FANMaintains source routing tablesAuthenticates nodes&Provides key

9、 management servicesRouter NodeProvides upward and downward packet forwardingTypically line poweredLow Energy NodeDiscover and join a PANSend/receive IPv6 packetsBattery powered devicesNetwork Topology72022 Silicon Laboratories Inc.All rights reserved.*RCP OnlyLow Energy NodeWi-SUN FAN 1.0 and FAN 1

10、.1 Supported Deploy a mesh network with several thousands of connected nodes Native IPv6 communication through 6LoWPAN Based on FSK PHYs(up to 300 kbps)Interoperable SecureBorder RouterNode FAN 1.0Wi-SUN FAN 1.0 Introduction of OFDM PHYs(up to 2.4 Mbps)Battery powered devices(water/gas metering,smar

11、t city sensing,etc.)Modulation&data rate switching(Mode Switching/Gear Shifting)Border RouterNode FAN 1.1Node FAN 1.0Low Energy ModeWi-SUN FAN 1.1Advantages of Mesh in Smart CitiesStar topology includes expensive base stationsMore GW needed for coverageIn an urban environment or RF challenging layou

12、t,deploying enough base stations to cover the entirety of an area is tedious.Mesh topology is more flexibleMesh routers can be deployed on grid powered devices(electric meters,streetlights)Having a complete RF coverage of such an area becomes possibleBase station RF range Base stationCovered devices

13、Isolated devicesBuildingNetwork RF range Base stationCovered devicesIsolated devicesMesh routerBuilding9L O N G-R A N G E I O T P R O T O C O LM E S H N E T W O R K P R O T O C O LWi-SUN SecurityAccess control is based uponPublic key infrastructure PKIModeled after Wi-Fi security framework(IEEE 802.

14、1X and IEEE802.11i)Each Wi-SUN device uses two X.509 certificatesThey are signed by an official Certification Authority(CA)The device certificate is used to authenticate the device to an authentication serverThe CA root certificate is used by the device to verify the authentication serverAuthenticat

15、ion uses EAP-TLS protocol over EAPOL.Authentication results in Pairwise Master Key(PMK)A unique key shared between the border router and the device.Frame SecurityFAN nodes MUST implement AES-CCM 128b based Frame SecurityP U B L I C K E Y I N F R A S T R U C T U R E(P K I)W I T H A U T H E N T I C AT

16、 I O N T H R O U G H C E R T I F I C AT E Deployment Example:LondonControl Management System(CMS)Street lightingUtilitiesParking15,000 connected Wi-SUN devices12 Wi-SUN border routersMajor benefitsEnables real-time remote management Reduces electrical energy usage Automatically generates service ord

17、ersFuture proof system that can scale as the city converts old infrastructure to new Additional information here:https:/wi-sun.org/latest-news/wi-sun-technology-provides-the-platform-for-city-of-london-smart-city-initiative/Miami|Paris|Oslo|Dubai 11Designing your Smart City Application with Wi-SUNWi

18、-SUN ApplicationsEnvironmental MonitoringWaste ManagementConsumption,Flow rate,Valve ControlStorage&DistributionLivestock ManagementStreet LightingEnergy Management,Maintenance,SecurityTraffic Control/Lights,Parking MetersOil/Gas ProductionUtility MetersChoosing the Right Frequency of OperationWi-SU

19、N Global Spectrum 152021 Silicon Laboratories Inc.All rights reserved.Wi-SUN:Frequency Bands and Operating ModesFreq_cfgChan Center Freq0(MHz)Channel Spacing(KHz)channel rangeF1470.22000-198F2779.22000-38F3779.44000-18F4920.6252500-15F5863.11000-68F6863.12000-34F7870.11000-54F8870.22000-26F9865.1100

20、0-18F10865.12000-9F11866.11000-28F12866.12000-14F13866.34000-6F14920.22000-23F15920.44000-11F16902.22000-128F17902.44000-63F16902.22000-128F17902.44000-63F18902.66000-41F19a902.22000-25F19b902.420065-128F20a902.44000-11F20b902.640033-63F21a902.66000-6F21b915.260022-41F22915.22000-63F23915.44000-31F2

21、4917.12000-31F25917.34000-15F26915.22000-13F27915.44000-6F28919.22000-18F29919.44000-9F30920.44000-11F31920.62000-37F32920.94000-17F33920.86000-11F342400.22000-415F352400.44000-20654Operating class:132Region(regulatory domain)470510779787876902907.5915 917 91891992392824002483.5470-510F1779-787F2920

22、.5-924.5F4F3863-870 F5F7-870-876F6F8865-867F9F10866-869F11920-925F14F12F15F13902-928F16F17902-928F16F17F18902-907.5F19a 915-928F19bF20aF20bF21aF21b915-928F22F23917-923.5F24F25915-918F26F27919-923F28F29920-925F14F30920-928F31F32F332400-2483.5F34F351b/2a/31a2a/31a1b/2a3/4a/51a4a/51a2a/32a/32a/31b/2a3/

23、4a/51b/2a3/4a53/4a/51b/2a3/4a/51b/2a3/4a/51b/2a3/4a/51b/2a3/4a/51b/2a1b2b/34b/51b/2a3/4a/5Australia/New Zealand(0 x08)870863920925China(0 x04)Europe(0 x03)1b/2a3/4a51b/2a3/4a51b/2a/31b/2a3/4a/5India(0 x05)Singapore(0 x0D)Mexico(0 x06)North America(0 x01)Brazil(0 x07)South Korea(0 x09)Philipines(0 x0

24、A)Malaysia(0 x0B)Worlwide(0 x00)Japan(0 x02)Hong Kong(0 x0C),Thailand(0 x0E),Vietnam(0 x0F)Regulatory domain,operating class and operating mode are provided by the stack,together with network name.The operating class(OC)field is an 8-bit unsigned integer which is used to achieve the desired data rat

25、e and channel plan within the regulatory domain Understanding your Data Needs and Modulations RequiredFG25 OFDM Modulation Supports High Data RatesWi-SUN specification sets required combinations of OFDM Options,MCS(Modulation and Coding Scheme)indexes and operating FrequenciesBased upon IEEE802.15.4

26、-2020 Table 20-10Some modes(greyed)are not part of Wi-SUNMCS#sets the Modulation and Coding SchemeOnly MCS6 is mandatory,lower MCS are optionalOption#sets the channel bandwidthFrom 200 KHz to 1.2 MHz channel spacingOption 4 is mandatory in EU,JP,NA/BZOption 3 is mandatory in JP,NA/BZOptions 1 and 2

27、are mandatory in NA/BZ,Option 2 is optional in JapanData ratesWi-SUN:from 150kbps to 2400kbpsSUN-OFDM offers bit rates down to 12.5kbpsFG25 supports proprietary rates up to 3.6MbpsFG25 supports Rate Shifting between rates182022 Silicon Laboratories Inc.All rights reserved.NA/BZJPEUWhy OFDMMain benef

28、its:Multi-carrier modulation with robustness to multipath and fadingCarriers dedicated to synchronization,others to dataOFDM has built-in flexibility/scalabilityFor a given OFDM option,same synchronization for all MCS modes-easy switch between modes without configuration(in-packet signaling)Wi-SUN O

29、FDM adds much higher bit rates than available in FSKUp to 300kbps(EU),1.2Mbps(JP)and 2.4 Mbps(US)Increased throughputsReduced on-air time for same payload,thus improved network performanceDespite consumption of OFDM Tx is higher than FSK Tx,the much shorter OFDM bursts reduce power consumptionOFDM b

30、rings higher bitrate for similar range(sensitivity)A:doubled bit rateB:tripled bit rateOFDM brings better range for a given bit rateC:5 dB improvementUpdate:1/10Example for 400 KHz BW-116-114-112-110-108-106-104-102-100255075100150200300400600400FSK-3FSK-2bFSK-2b_FECFSK-3_FECOFDM 3-MCS0OFDM 3-MCS1OF

31、DM 3-MCS2OFDM 3-MCS3OFDM 3-MCS4OFDM 3-MCS5OFDM 3-MCS6AFSKOFDMBCBitrateSensitivityPlan your NetworkConsiderationsCoverageNumber of Nodes RedundancyLatencyThroughputSimulations222022 Silicon Laboratories Inc.All rights reserved.Wi-SUN Network Resilience2022 Silicon Laboratories Inc.All rights reserved

32、.23More Information https:/ the Right PartnerSub-GHz FSK PHYsField Proven SoCsMandatory and Optional PHYsWi-SUN Kit and Radio boardsThings to Look for From a PartnerCoAP LibraryCoAP LibraryIPv6/6LoWPANPKI/EAP-TLS/AESBorder Router DemoSample ApplicationsBorder Router Reference Certification Collatera

33、lsFAN Certified PHYsCertified PHYsRouter CertificationBorder Router CertificationHARDWAREWI-SUN STACK TOOLSCERTIFICATIONGet CertifiedWi-SUN Product Certification Considerations Customers Can Leverage Silicon Providers FAN Certification Certified Router Certified Border Router Certified PHYs Modulati

34、on-FSK Data Rate-50,100 and 150 kbps,Regions NA,Brazil,EU and IndiaWi-SUN Test Labs Allion-Taiwan*|JEMIC-Japan|TELEC-Japan|TUV-Japan*|TUV-USA|TUV-India*Test labs used by silicon labs for certificationWi-SUN Certified ProductWi-SUN Certified PlatformFAN 1.x Certified StackFAN 1.x PHY CertificationPHY

35、 RAILEFR32FG-SoCSystem-On-Chip(SoC)Silicon Labs certifies SoC PHY&Wi-SUN StackCustomer certifies Wi-SUN ProductUser Application LayerUser ApplicationNote-Wi-SUN Alliance promotor or contributor membership is required for certification Silicon Labs Wi-SUN FAN 1.1 SoCSub-GHz Wi-SUN SoC for Metering,St

36、reet Lighting,DA&Industrial ApplicationsHigh-Performance RadioSUN FSK,SUN O-QPSK,SUN OFDM up to+16 dBm TX(OFDM)Up to+16 dBm TX(FSK/O-QPSK)-126.3 dBm sensitivity 4.8 kbps 915 MHz O-QPSK-123.9 dBm sensitivity 6.25 kbps 914 MHz SUN O-QPSK-112.7 dBm sensitivity 50 kbps 866.5 MHz OFDM(Option 4,MCS2)Low P

37、ower6.28 mA RX current at 924 MHz(400 kbps 4-GFSK)58.6 mA TX current 13 dBm(923.6 MHz w/CW from FSK PA)76.6 mA TX current 16 dBm(915 MHz w/CW from FSK PA)186 mA TX current 16 dBm(914 MHz-2.4 Mbps Wi-SUN OFDM Option 1,MCS6)30 A/MHz in Active Mode(EM0)at 97.5 MHz4.6 A EM2 DeepSleep current(512 kB RAM

38、retention andRTC running from LFXO)2.6 A EM2 DeepSleep current(32 kB RAM retention andRTC running from LFRCO)World-Class SoftwareWi-SUNFlex for ProprietaryARM Cortex-M33 with TrustZone97.5 MHz(FPU and DSP)1920/1152kB of flash512/256kB of RAMSecuritySecure VaultTM-MidSecure VaultTM-High(select OPNs)L

39、ow-power PeripheralsEUSART,USB,I2C16-bit ADC,12-bit VDAC,ACMP,LESENSE,PCNTTemperature sensor+/-1.5oCCompact Size7x7 QFN56,37/36 GPIO+125C TemperatureLandis+Gyr Case Study with FG25https:/ With IoT Developer ConferenceWorks With IoT Developer Conference,Silicon Labs Premiere Event Runs on Aug 22ndand 23rdTwo days free virtual conference4 Keynotes,40+Technical SessionsCover Bluetooth,LPWAN,Matter,and Wi-Fi,plus top trends in IoT security,AI/MLSneak peek at Silicon Labs next-generation platformRegister:https:/ you!Silicon LabsWebsiteSilicon LabsWeChatSilicon LabsCommunity