Body area-networks
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The document discusses body area networks (BAN) and their requirements. It provides an overview of use cases for BANs, including body sensor networks, fitness monitoring, wearable audio, mobile device-centric networks, and remote control devices. It also outlines technical requirements for BANs, such as low power consumption, scalable data rates, fast startup times, low latency, and the ability to support a large number of devices in a small area. The goal is to connect various devices worn or carried by an individual to provide an integrated "connected user" experience.
Body area-networks
- 1. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 1 Overview • Body Area Networks – S. Drude – Quick summary use cases, requirements • Channel Models and Health Aspects of PAN and BAN – A. J Johansson – Magnet and Magnet Beyond – Channel modelling – Medical implant communications – Health aspects of PAN/BAN implants
- 2. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 2 Body Area Network • Broad range of possible devices • Broad range of media types • Connect everything you carry on you and with you • Offer “Connected User” experience • Matches low power environment • Challenge – scalability data rate, power
- 3. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 3 Body Area Networks –Target Position Average power consumption, sustained data rate 1000 mW500 mW100 mW50 mW10 mW 1 Gbit/s 100 kbit/s 1 Mbit/s 10 Mbit/s 100 Mbit/s 1 kbit/s 10 kbit/s Wireless USB IEEE 802.11 a/b/g Bluetooth ZigBee 200 mW20 mW BodyAreaNetwork 5 mW2 mW
- 4. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 4 Body Area Networks • Usage Scenarios – Body senor network – Fitness monitoring – Wearable audio – Mobile device centric – Video stream – Remote control & I/O devices
- 5. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 5 Body Sensor Network • Medical application – Vital patient data – Wireless sensors – Link with bedside monitor – Count on 10 – 20 sensors • Five similar networks in range • Minimum setup interaction • Potentially wide application • Total traffic / patient < 10 kbps
- 6. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 6 Fitness Monitoring • Central device is MP3 player • Wireless headset included • Expand functionality – Speed, distance – Heart rate, respiration monitor – Temperature sensor – Pacing information – Location information – Wristwatch display unit – Etc. • Total system load < 500 kbps • Synchronization may go faster
- 7. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 7 Wearable Audio • Central device is headset • Stereo audio, microphone • Connected devices – Cellular phone – MP3 player, PDA – CD audio player – AP at home – Handsfree car – Remote control – Others • Requires priority mechanism • Network load < 500 kbps
- 8. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 8 Mobile Device Centric • Mobile terminal is central point • Covers broad set of data – Sensors – vital, other – Headset – Peripheral devices – Handsfree / car • Provide gateway to outside – Offload sensor data, other • Requires priority mechanism • Network load < 500 kbps
- 9. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 10 Remote Control & I/O Devices • Remote control device • Increase consumer convenience • Makes headset control practical • Stand-alone vs shared function • Combine with wristwatch display ? • Printers • Identification, storage • Wireless pen • Complement BAN functionality
- 10. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 11 Technical Requirements • There is no specific standard for BANs – Current standards come close for specific use cases, not broad enough – Issues: power consumption, discovery, QoS – Support for very low power devices, sensors • Target less than 10% power consumption for communications compared to total device • Have single standard with broad range of supported data rate - scalability
- 11. doc.: IEEE 802.15-06-0331 Submissio n July 2006 Stefan Drude, PhilipsSlide 12 BAN Requirements - Draft • Distance 2 m std, 5 m special • Piconet density 2 - 4 nets / m2 • Devices per network max. 100 • Net network throughput 100 Mbit/s max. • Power consumption ~ 1mW / Mbps (@ 1 m distance) • Startup time < 100 us, or < 10% of TX slot • Latency (end to end) 10 ms • Network setup time < 1 sec (after initial setup, per device)