Rolf de Vegt, July 8, IEEE802.11ah Benefits and Use Cases

Transcription

1 Rolf de Vegt, July 8, 2015 IEEE802.11ah Benefits and Use Cases

2 802.11ah Value Proposition 3rd Band WLAN g 2.4 GHz n 2.4 & 5 GHz ac 5 GHz ah (sub 1 GHz) Wi-Fi ecosystem WFA certified interoperability and Wi-Fi user experience Improved Range 10 db link budget advantage over 2.4 GHz technologies Low Power Supports multi-year battery life sensor operation Rich Data Rates 150Kbit/s ~ 78 Mbits/s per spatial stream (sensor, audio, security camera, internet) Scalable Support thousands of nodes IP connectivity Same as Wi-Fi Outdoor Coverage Support for larger delay spreads

3 IEEE802.11ah Standardization Overview IEEE task group ah is chartered to define an OFDM PHY operating in the licenseexempt bands below 1 GHz, and enhancements to the MAC to support this PHY Transmission range up to 1 km Data rates > 100 Kbps ah categories of use cases Internet of Everything (IoE) Extended Range WLAN (e.g. for cellular offload) ah standards timeline Draft 5.0 completed March 2015 Final draft expected completion Mid- 2016

4 Projected Markets and Usages Market Segments Sensor Networking Wearables Industrial Automation Utility Networking Extended Range WLAN Use Case Examples 1. Sensor networking and extended range traffic for homes 2. Lighting control in large office and venue 3. Wearables for health 4. Wearables for multimedia/ infotainment 5. Wireless field network for industry automation 6. Wireless utility and parking meters 7. Extended range for campus network

5 802.11ah Enables Internet of Everything Security Camera Thermostat Alarm Lighting Medical Device Sensors Appliances Keyless Entry Home Entertainment Smart Meters Wi-Fi Access Point Electric Car / Charging Station

6 Use Case Example: Sensor Networking and Extended Range WLAN in Home setting Temperature sensor Bedroom 4 Bedroom 3 Master bedroom Smoke detector Security Camera Security Camera Tri-Band Wi-Fi Access Point HDTV Bedroom 2 Family room Tablet Garage Smartphone Lighting Heart rate monitor Fitness Smartphone Keyless door knob Living/dining room Window shutter HDTV DVR DVR remote control Moisture sensor Sprinkler

7 802.11ah Provides Extended Range WLAN* for Mobile/Computing and support of VoWi-Fi / Wi-Fi Calling Edge Rate Mbps (Range) TX x RX GHz 27m range 6.5 Mbps edge 2.4 GHz 54m range 6.5 Mbps edge MHz 88m range 5.8 Mbps edge 11ac/n 5 GHz 20 MHz BW 40 MHz BW 11n/b 2.4 GHz 20 MHz BW 11ah 900 MHz 8 MHz BW (US Only) 6.5 (27m) 6.5 (54m) 5.9 (88m) 3x2 3x2 2x2 Smartphones, Tablets, Laptops can be used in Garages, Backyards, and Streets *US has 26MHz spectrum in 900 MHz available. Simulation Assumptions: Minimum QoS 5Mbps, Retail AP, 21 dbm/tx chain Tx power, Indoor to outdoor (d^4) channel model

8 802.11ah Extends Wi-Fi Range for Improved Coverage ah ah ah Coverage area not drawn to scale Extended Range Wi-Fi Hotspot Coverage Coffee shops Malls Campuses Indoor to Outdoor

9 Sweet spot for ah enabled IoT devices Blue Sky.11ah Sweet Spot Dynamically Updateable NFC tag Sensor Swarm AR Beacon Tag Electronic noses (bedbugs, molds) New to the world Physiological sensors (ECG, pulse oxymeters, Glucose monitors) Temp sensor Location Position Tag Moisture sensors (flooding, pipe-leak) Home Appliance Module (e.g. Washer/Dryer) Existing Devices Motorized Valves in HVAC Remote Control Fire Alarm Security (door lock, Motion sensors) Gas meter Water meter AC Powered Daily Charge 3 Mos 1 Yr 3 Yr 5 Yr 10Yr Battery requirement Many IOE devices are expected to be battery powered, small form-factor, headless devices

10 Examples of potential ah devices, per segment Segment Access Point / Infrastructure Example Client Devices 1. Sensor Networking 2. Wearables 3. Industrial Automation 4. Utility Networking 5. Extended range WLAN Home AP Enterprise AP Hotspot AP Smartphone with soft AP Sensor network gateway Home AP Enterprise AP Hotspot AP Smartphone with soft AP Sensor network gateway Enterprise AP Small and Midsize business AP Sensor network gateway Pole top / Aggregation point AP Outdoor backhaul AP Home AP Hotspot AP Enterprise AP Outdoor backhaul AP Cellphone tower AP Lighting controller Temperature sensor Motion Sensor Thermostat Sound controller Agricultural sensor / controller Garden sensor (e.g. humidity sensor or sprinkler controller) Fitness monitor Medical device (weight, heart rate) Glasses Smart watch Industrial equipment controller Temperature, Humidity, Wind speed/direction Monitor Water Level monitor Air quality / Pollution monitor Smart meter Electric charging controller Smartphone Tablet Laptop Webcam

11 Harmonized 11ah Spectrum in Key Geographies All Bands are Sub-1 GHz 24 MHz 8 MHz 5.6 MHz 26 MHz 755 China (max erp <= 5 mw) EU China (max erp <= 10 mw) MHz US (max erp <=1 W) 6.5 MHz Region Tx power regulations Korea US Max e.r.p. <= 1 W 13.8 MHz EU Korea China Japan max erp <=14 dbm PSD <= -4.5 dbm/100khz (863~868.6MHz) PSD <= 6.2 dbm/100khz (865~868MHz) 3 mw or 10 mw (920.6~923.5MHz and six 200 khz channels below MHz) Max e.r.p. <= 5 mw ( MHz) Max e.r.p. <= 10 mw ( MHz) 1mW, 20 mw or 250 mw (915.9~929.7MHz) Max BW <= 1 MHz Japan MHz (Max BW = 1MHz) Global market for IoT usage Additional market for Extended Range WLAN in North America, Australia other

12 900 MHz Technology Comparison Maximum Zwave range is limited due to FCC regulation Simulation assumptions: 1x1 Antenna configuration, 1MHz mode 11ah, 4dBm Tx power (-1.25dBm for Zwave due to regulatory limit), D-NLOS channel model, Typical 80dB path loss representative of an average 3500 sq ft US home based on real measurements of 10 US homes with randomly placed clients. BT and most Zigbee deployments are in 2.4Ghz today

13 11ah Receivers Support Coherent Combining Using Multiple AP Antennas to Extend Range Maximum Ratio Combining (MRC) in 11ah extends range using multiple AP antennas Uplink 11ah AP Alternative technologies unable to extract the full benefit of multiple antennas due to lack of coherent combining Sensor 900MHz Using two Antennas provides up to 9dB additional gain (consisting of array and diversity gain) Maximum Zwave range is limited due to FCC regulation Simulation assumptions: 1x1 antenna (except for 1x2 11ah), 1MHz 11ah, 4dBm Tx power (-1.25dBm for Zwave due to regulatory limit), D-NLOS channel model.

14 Summary 11ah range provides extended range at high data rates at 900 Mhz 11ah implements energy efficient protocols to extend the battery life for sensors 11ah is optimized to scale with thousands of nodes Achieves low power by using medium efficiently Mitigates hidden node problem 11ah provides a rich set of data rates for extended range WLAN applications

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