Connect your IoT device: Bluetooth 5, 802.15.4, NB-IoT Prithi Ramakrishnan Arm TechTalk 2017
IoT connectivity technologies Multiple standards, different applications Throughput Unlicensed >100Mbps Wi-Fi LTE-A Licensed <10Mbps Short Range Long Range <1Mbps <100Kbps Bluetooth 802.15.4 LTE-M NB-IoT <10Kbps LoRa <1Kbps Sigfox <10m <100m <1Km <10Km Coverage 2
The wireless connectivity pyramid 3
Bluetooth low energy - connectivity options Paired Beacons Mesh 1 to 1 1 to many Many to many 4
Beacons: Beckons high volumes Beacon Market* Beacons 3500 3000 2500 2000 1500 1000 500 0 Driven by device battery life improvements Driven by standards evolution 1 2 3 4 Series1 Series2 Series3 Series4 Series5 *Arm Internal market analysis 1 to many 5
Bluetooth mesh: Applications and Market Sectors Building automation Way finding Asset tracking Commercial Lighting Building Automation Sensor Networks Way finding Asset tracking 6
Bluetooth low energy - future growth Direction Finding Audio on Bluetooth low energy 7
802.15.4: Established standard for IoT Used in consumer and commercial applications Smart meters Home automation Commercial automation 802.15.4 8
Cordio - Design Flexibility is Yours Bluetooth 5 and/or 802.15.4 Select your fab Select your features/standards Match your stack(s) 802.15.4 9
Arm Cordio IP PAN Products Complete Arm radio IP solution Arm Cordio radio front-end Support for Bluetooth 5 and/or 802.15.4 Flexible architecture Choice of radio standards with software Interface to non-arm radio front-ends 3 rd party 2.4 GHz Mixed Signal Radio Front End (RFE) 10
UART 1 UART 2 SPI I2C TIMER GPIO PWR CTRL Flexible Cordio architecture: Reference design Cortex-M33 Cordio BT Profiles Cordio BT Stack ZigBee 3.0 Thread 1.1 Bluetooth 5 Link Layer 802.15.4 MAC Asynchronous Bridge AHB - 32 ROMC RAMC CryptoCell 310/312 DMAC Boot ROM Memory SRAM 11
NB-IoT and LTE-M are complementary 12
Why NB-IoT Spectrum efficient 200kHz deployment in licensed spectrum. Cost-effective Modest upgrade to carrier s existing network, and designed low cost from the ground-up. High reliability Carrier-grade quality of service (QoS) and security. Global Built on 3GPP open standard, ensuring interoperability and scalability. 13
NB-IoT: example applications Real NB-IoT use cases being deployed now OFO Mobike Shanghai Fiorentini Source: ofo.so Source: mobike.com Source: fiorentini.cn 14
NB-IoT: 10 year battery life? Analysis using 3GPP (TS45.820) methodology Smart gas meter Industrial environment dynamic tariffs Reporting energy consumption every 2 hours 5Whr battery, 200 bytes Poor (164dB) Typical (154dB) Good (144dB) Battery Life (Years) vs Coverage Smart farming 0 5 10 15 20 Battery Life (Years) vs Coverage Soil monitoring optimised irrigation Reporting moisture level once per day 5WHr battery, 200 bytes Poor (164dB) Typical (154dB) Good (144dB) 0 10 20 30 40 15 Note: Battery self-discharge, temperature and shelf life need to be accounted for.
Arm Cordio-N NB-IoT IP: architecture overview Application layer & Control Device management Connection management Secure Sub-System e.g. SIM Communications Protocol Stack L3, L2 & L1 RF transceiver Integrated on-chip Application Layer & Device Management Cordio-N Sensors Protocol stack PHY RF mbed OS NB-IoT API NB-IoT Application Stack IP Software Stack Non IP LWM2M Control Modem Application Interface NB-IoT Protocol Layer 3 Layer 2 Layer 1 PHY HW RF 16
Example Cordio-N based IoT SoC Example IoT Subsystem Cordio-N Cortex M33 CPU System SRAM Cortex M CPU Local SRAM AHB5 Interconnect AHB5 Interconnect Peripherals CryptoCell Flash Controller 3GPP Security Modem & baseband L1 HW Accelerators UICC Interface eflash NB-IoT RF 17
Towards integrated SIM Combining a secure element, cellular modem and MCU into a single SoC MCU CPU MEM I/O CryptoCell SIM Cellular modem small CPU Radio MEM CryptoCell esim Reducing BoM from 3 into 1 Example with an Arm security island I/O Keys * (OTP) IoT Apps CPU CryptoCell euicc Stack Cordio-N Radio & Baseband CPU MEM Security island Secure MEM or *Birth certificate (ECASD) and other keys integrated SIM in security island 18
IoT Devices Metres to Kilometres, Connected with Arm Bluetooth 5 802.15.4 NB-IoT 19 New classes of connectivity for a new era of IoT
Simplifying IoT connectivity Complete solution from RF to stack. Low power, flexible, design-ready. Bluetooth 5 or 802.15.4: use one or both NB-IoT: pre-certified solutions. 20
Thank You! Danke! Merci! 谢谢! ありがとう! Gracias! Kiitos! 감사합니다 धन यव द 21
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