《Wi-Fi-Soc芯片在loT智能设备中的应用》课件

1、 Wi-Fi SoC 芯片在IoT智能设备中的应用 提纲IOT智能设备的连接技术及其发展趋势Wi-FiBluetooth SmartZ-WaveZigBeeThreadIOT设备的 Wi-Fi SoC 智能技术方案集成方案(Highly Integrated SoC)智能设置(Smart Configuration)省电优化(Power Saving Optimization)桥接技术(Bridge for Mesh)自动互联(Auto Link in Mesh)2提纲IOT智能设备的连接技术及其发展趋势Wi-FiBluetooth SmartZ-WaveZigBeeThreadIOT设备的

2、Wi-Fi SoC 智能技术方案集成方案(Highly Integrated SoC)智能设置(Smart Configuration)省电优化(Power Saving Optimization)桥接技术(Bridge for Mesh)自动互联(Auto Link in Mesh)3IOT智能设备的连接技术4IOT Smart DevicesWi-Fi A.K.A Wireless LANBased on IEEE 802.11 MAC/PHY Specification802.11b(1999)/g(2003)/n(2009)Running at 2.4 GHzRate up to 15

3、0 Mbps for 1X1 at 40 MHz bandwidth in 11n802.11a(1999)/n(2009)/ac(2013)Running at 5GHzRate up to 867 Mbps for 1X1 at 160 MHz bandwidth in 11ac802.11ad (WiGig, 2012. Merged with Wi-Fi in 2013)Running at 60 GHz 6.75 Gbps802.11af (White-Fi/Super Wi-Fi, 2014)Running on white space spectrum in the VHF/UH

4、F bands between 54 and 790 MHzRate is 26.7 Mbps for 6/7 MHz channels and 35.6 Mbps for 8MHz channel802.11ah (Est 2016)Low power and range up to 1kmRunning at 900 MHzRate at least 100 Kbps802.11ax (early stage)Based on 802.11acRunning at 5GHzSignificantly improved throughput in dense deploymentsBluet

5、ooth Smart A.K.A Bluetooth Low Energy (BLE)Based on Bluetooth 4.0 standard released in 2010Enhanced in version 4.1 and 4.2 For low power devices like healthcare, fitness, wearable etc.Not backward compatible with classic Bluetooth protocolRunning at 2.4 GHzRate 1MbpsZ-Wave Proprietary design (from S

6、igma Designs Inc.)Low powerFor battery-operated devices like smoke alarms, security sensors etc.Running at 900 MHzRate up to 100 kbpsZigBee Based on IEEE 802.15.4 ratified in 2004Conceived in 1998, standardized in 2003 and revised in 2006Mesh network topology (OK with Star and Tree)ZigBee PRO (A.K.A

7、 ZigBee 2007)Backward compatible with ZigBee 2006 devicesEnhanced routing processZigBee IP (ZIP, 2014)IPv6Over 6LoWPANUp to 65K devices per networkLow Cost, Low PowerRunning at 2.4GHz globallyRate up to 250 kbpsThread Alliance initiated by Google in July 2014Running on existing 802.15.4 siliconStack

8、 based on 802.15.4-2006 versionUDP with IPv6Over 6LoWPANUp to 250 devices per networkDesigned for very low power operationRunning at 2.4GHzRate up to 250 kbps连接方案比较 10Wi-FiBLEZ-WaveZigBeeThreadIndoor Range50m50m30m10-20m10-20mMax # of deviceImplementation dependentImplementation dependent23265K250Da

9、ta Rate1Gbps1Mbps100 Kbps250 Kbps250 KbpsFrequency2.4 GHz /5GHz2.4GHz908/916 MHz (U.S)2.4GHz2.4 GHzMesh SupportYes*No*LimitedYesYesIP SupportV4/V6V4/V6NoV6*V6Low PowerNo*YesYesYesYes结论 11Wi-FiBLEZ-WaveZigBeeThreadWell Deployed? *High Throughput?Long Range? *Internet Connection? *Power Friendly? *Goo

10、d Roadmap? Wi-Fi is still a GREAT solution for IOT提纲IOT智能设备的连接技术及其发展趋势Wi-FiBluetooth SmartZ-WaveZigBeeThreadIOT设备的 Wi-Fi SoC 智能技术方案集成方案(Highly Integrated SoC)智能设置(Smart Configuration)省电优化(Power Saving Optimization)桥接技术(Bridge for Mesh)自动互联(Auto Link in Mesh)12待解技术要点Low CostHighly integrated SoCEasy

11、ConfigurationSmart configurationLow Power Good power saving schemeMesh NetworkSimple solution with Wi-Fi bridgeMesh becomes more important in order to increase the range提纲IOT智能设备的连接技术及其发展趋势Wi-FiBluetooth SmartZ-WaveZigBeeThreadIOT设备的 Wi-Fi SoC 智能技术方案集成方案(Highly Integrated SoC)智能设置(Smart Configuratio

12、n)省电优化(Power Saving Optimization)桥接技术(Bridge for Mesh)自动互联(Auto Link in Mesh)14集成方案 (Highly Integrated SoC)Integrate components to a single SoCControllerWi-FiLow RBOM - integrate as many as possible including PA, LNA, T/R switch etc.Process upgrade55 nm 40 nm 28 nm Other methods that can reduce the

13、die sizeReduce memory etc.提纲IOT智能设备的连接技术及其发展趋势Wi-FiBluetooth SmartZ-WaveZigBeeThreadIOT设备的 Wi-Fi SoC 智能技术方案集成方案(Highly Integrated SoC)智能设置(Smart Configuration)省电优化(Power Saving Optimization)桥接技术(Bridge for Mesh)自动互联(Auto Link in Mesh)16智能设置 (Smart Configuration)No screen/No keypad for most of IOT de

14、vicesConfigure through Phone/Pad devicesSolutionsProbe Request BasedMulticast Data BasedMicro AP BasedProbe Request Based18IOTIOTProbe RequestConnectionGet SSID& Password from Probe request Ext-APConnectionMulticast Data Based19Ext-APIOTIOTMulticast DataConnectionGet SSID& Password from multicast da

15、ta ConnectionMicro AP Based20IOTIOTConnection & ProvisioningRunning in Micro AP modeConnectionGet SSID and Password from provisioning data Ext-AP技术方案比较 21ProbeMulticastMicro APFast configuration?Easy to use?Works with all Ext-AP?Android Phone/Pad?iPhone/iPad (w/o WAC)?Which one to use?Combined solut

16、ionProbe Request Multicast Data Micro AP提纲IOT智能设备的连接技术及其发展趋势Wi-FiBluetooth SmartZ-WaveZigBeeThreadIOT设备的 Wi-Fi SoC 智能技术方案集成方案(Highly Integrated SoC)智能设置(Smart Configuration)省电优化(Power Saving Optimization)桥接技术(Bridge for Mesh)自动互联(Auto Link in Mesh)22省电优化 (Power Saving Optimization)Reduce transmissio

17、n powerRange is shortenedCompensated by mesh topologyHost controller sleepOffload connection maintenance to Wi-Fi moduleKeep controller sleep during idleTurn off Wi-Fi module during idle and fast recovery when neededAdjustable wakeup period in Wi-FiUse multiple DTIM schemeWake up every N beacon inte

18、rvals23提纲IOT智能设备的连接技术及其发展趋势Wi-FiBluetooth SmartZ-WaveZigBeeThreadIOT设备的 Wi-Fi SoC 智能技术方案集成方案(Highly Integrated SoC)智能设置(Smart Configuration)省电优化(Power Saving Optimization)桥接技术(Bridge for Mesh)自动互联(Auto Link in Mesh)24桥接技术 (Bridge for Mesh)Wi-Fi Mesh NetworkWhat kind of MeshBridge for Wi-FiLearning T

19、able in BridgeStackable BridgeBridge based Wi-Fi Mesh NetworkWi-Fi Mesh NetworkWhat is Wi-Fi Mesh?Each node can relay/forward data for the networkRouter/Portal connected to LAN or InternetSelf forming for the best pathSelf healing to recover the linkWhy Mesh for Wi-Fi network?Compensate the range re

20、duced by lowering transmission powerIncrease the reliability of network connectivity802.11S (Mesh Specification)Initiated in 2004, ratified in 2011Based on HWMP (Hybrid Wireless Mesh Protocol) for MAC address based routingUsed in OLPC (One Laptop Per Child)What Kind of Mesh?Not 802.11SComplicated in

21、 implementationNeed more resource in memory, CPU power etc. in order to work efficientlyInter-operability issue due to lack of full support from vendorsBridge Based MeshMature technologyCost-effectiveSimplified implementation to cover forming and healingBridge for Wi-FiEach Bridge has 3 componentsBr

22、idgeIn-APIn-STAIP/MAC address basedSource learningMAC address conversionBroadcast/multicast handlingSupport both IPv4 and IPv6ARP (Address Resolution Protocol) checking for IPv4NDP (Neighbor Discovery Protocol) checking for IPv6DHCP checkingPacket is forwarded/bridged between IOT device and routerLe

23、arning Table in BridgeLearning table is built up based on both IP address and MAC addressCorresponding port number decides where to forward the packet叠桥技术(Stackable Bridge)Bridges can be linked to another bridge in order to extend longer range.Bridge based Wi-Fi Mesh NetworkMultiple bridges linked t

24、o each other to forward traffic between IOT devices and router (Ext-AP)提纲IOT智能设备的连接技术及其发展趋势Wi-FiBluetooth SmartZ-WaveZigBeeThreadIOT设备的 Wi-Fi SoC 智能技术方案集成方案(Highly Integrated SoC)智能设置(Smart Configuration)省电优化(Power Saving Optimization)桥接技术(Bridge for Mesh)自动互联(Auto Link in Mesh)32自动互联 (Auto Link)Link and Path build UpNode AdditionNode RemovalLink and Path Optimization创建接点连接(Link and Path build up)FormingSimplify the implementationNo 802.11aq (shortest path bridge)No 802.1d (spanning tree)Based on Received Signal St