LoRaWAN for Smart Cities Munich, May Jonathan Pearce Wireless Marketing Manager

Transcription

1 LoRaWAN for Smart Cities Munich, May 2015 Jonathan Pearce Wireless Marketing Manager

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3 3 IoT Context by Range IoT is all encompassing, with ranges scaling from wearables to the wide-area Data becomes valuable when connected to the cloud Value $ Personal Area BT / NFC Building Area WiFi / ZigBee Wide Area Cellular / Satellite

4 4 LoRaWAN Use-Cases: Monitoring/ Control Light Control Smart Energy Smart Agriculture Smart City Smart Home and Security

5 5 Essential Requirements #1 - Long Range, greater than existing infrastructure #2 - Long battery autonomy, 10 years or more #3 - Low cost: infrastructure, nodes, service #4 - Scalable & robust infrastructure #5 - Secure and trusted #6 - Simple commissioning #7 - Open & interoperable standard #8 - Killer-App features High data rate not needed in most IoT systems

6 6 What is LoRa TM Technology? A combination of two major concepts: LoRa TM spread spectrum modulation Provides the core long range capability Up to 5km range in urban environment, up to 15km suburban Developed by Cycleo, acquired by Semtech Powerful gateway baseband allows multiple receive channels LoRaWAN TM network protocol stack Provides the cellular network (aka large-star topology) Defined by IBM & Actility, made open by the LoRa TM Alliance Flat & modern software defined architecture: Routing complexity is centralized in the cloud data center Gateways are relatively basic RF-to-IP packet forwarders

7 7 #1 Long-Range Modulation LoRa TM uses Chirp spread spectrum modulation LoR a dBm GFSK sensitivity (dbm) Innovative & cost sensitive transceiver implementation Demodulate signals below the noise floor, improving sensitivity by ~20dB Robust against interference, noise, and jamming from WiFi, BT, GSM, 3G, LTE Multiples signals can occupy the same channel (CDMA) Tolerant to frequency offsets (unlike DSSS or narrow-band) bits/sec

8 8 LoRaWAN Coverage Test Smart City Coverage! 1000 node demo during Electronica trade-show 6 gateways, giving full coverage of NW quarter of Munich City 15km between suburban GWs 5km between urban GWs Excellent robust comms and indoor penetration

9 9 #2 Long Battery Autonomy Typ. Typ. 1uA Typ. 11mA Tx Packet 1 second End device sleeps Rx slot 1 Rx slot 2 End Device 1 second Rx slots 1 & 2 are optional for ACK or DL Fast Rx sync means unused Rx slots use negligible energy compared to Tx 5 Symbols: 5.1 SF SF8 164 ms SF12

10 10 #2 Long Battery Autonomy Assumptions: 20 transactions / day Sleep current ~1uA (including the MCU) MCU is mostly Off during Tx ACK not used The energy usage of the 2 unused Rx windows is negligible (<1%) Pout = +14 dbm, IDDTX = 40 ma Tx Payload size (Bytes) 290 bps SF12 1 kbps SF kbps SF7 4 ~5.3 ua ~2.3 ua ~1.2 ua 16 ~8.4 ua ~3.2 ua ~1.4 ua 32 ~12.5 ua ~4.4 ua ~1.6 ua Typical solution using a 16 byte payload and mostly SF10 needs only 300mAh battery for 10 year autonomy

11 11 LoRa TM Modulation Benefits (#3 Low Cost & #4 Scalable) Key Features Application Benefit 162dBm link budget (-148dBm sensitivity, +14dBm 868MHz) Longest range Jamming resistant tolerant to burst interference >100dB blocking Robust links and network efficiency Simultaneous transmissions on same channel Insensitive to XTAL offsets (no TCXO) Eliminates need for repeaters Lower system cost 10mA RX current, na sleep current Extended battery lifetime

12 12 What is LoRaWAN TM Protocol? (WAN = Wide Area Network) A Large-Scale, Bi-directional, Secured, Cellular Network Designed for low data-rate (~1kbps), low duty-cycle (~100mins), high capacity (~100k nodes) & long battery life (~10yrs) Developed, maintained and promoted by the LoRa TM Alliance Microchip is a founder member and sits on Strategic, Marketing & Technical committees Deployable as both public or private networks Scalable from a single gateway to national coverage Multi-Usage Bidirectional Low Cost Security High capacity Bidirectional Minimal infrastructure Unique ID Multi-tenant Scalable Capacity Simple gateways Application Key Public networks Broadcast Low cost end-nodes Network Key

13 13 #4 - LoRaWAN TM Infrastructure Private Network Individually managed networks, total end-to-end ownership Public Network Telco operator managed networks, servicing subscriber nodes Hybrid Network Enterprise deployment of Nodes & Gateways, for specific area coverage Provisioned to a commercial LoRaWAN server product End Users Telco Operator Products with Microchip LoRaWAN TM Modem LoRaWAN TM Gateways LoRaWAN Network Server

14 14 Case Study: Senet (USA) A single business case was enough to justify building a private LoRaWAN network Heating fuel (propane) delivery to residential properties Previously inefficient were filling cautiously when still 50% full Adding cloud-connected level sensor reduces 2 to 3 deliveries / year Also creates customer interaction, fuel level data is viewable online Looked at cellular (too power hungry) and Wi-Fi (intrusive to customer s network) but found LoRaWAN to be the best solution Once established, Senet is able to open this LoRaWAN network as a public service Multi-tenant business model further improves revenue and ROI Expands network, improves density & capacity Almost instant availability of a public network

15 16 #5 End-to-end Security Customer Node App Secure Payload Data - AES128 AppsKey Customer Server App MCHP Modem Parser UART LoRaWAN Slave Radio driver SPI LoRa Radio Logical connection - AES128 NwksKey Gateway Data base LoRaWAN Master Server IF Coax LoRa Node Packet Forwarder SPI UART Concentrator Coax PPS GPS TCP/IP Network Controller CLOUD

16 17 #6 Simple Commissioning No touch out-of-the-box commissioning Two activation methods available: ABP Activation-By-Personalization Shared keys stored at production Locked to a specific network OTAA Over-the-Air Activation Based on Globally Unique ID Flexible Channel Plan

17 #7 Open Standards & The LoRa TM Alliance An open, non-profit association of members that believes the Internet-of-Things era is now Already more than 40 companies have joined with over 400 requests for membership Missionto standardize Low Power Wide Area Networks (LPWAN) being deployed around the world to enable Internet-of-Things (IoT), Machine-to-Machine (M2M), smart city and industrial applications The Alliance members will collaborate to drive the global success of the LoRa TM protocol (LoRaWAN TM ), by sharing knowledge and experience to guarantee interoperability between operators and devices in one open global standard 18

18 20 #8 The Killer App Localization Node positioning to 10m No reception or computation burden on the end-node Positioning functionality with 10 year battery life X 1,Y 1,Z 1 X 2,Y 2,Z 2 ΔT 2 Computation Performed In the Cloud ΔT 1 ΔT 3 X 3,Y 3,Z 3

19 21 Next Steps Visit us on the Mouser Stand

20 22 Trademarks The Microchip name and logo, the Microchip logo, dspic, KeeLoq, KeeLoq logo, MPLAB, PIC, PICmicro, PICSTART, PIC 32 logo, rfpic and UNI/O are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor, MXDEV, MXLAB, SEEVAL and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U.S.A. Analog-for-the-Digital Age, Application Maestro, chipkit, chipkit logo, CodeGuard, dspicdem, dspicdem.net, dspicworks, dsspeak, ECAN, ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified logo, MPLIB, MPLINK, mtouch, Omniscient Code Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit, PICtail, REAL ICE, rflab, Select Mode, Total Endurance, TSHARC, UniWinDriver, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. 2015, Microchip Technology Incorporated, All Rights Reserved.