Body area networks (BAN)


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A detailed presentation about Body area networks (ban)

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  • doc.: IEEE 802.15-<doc#> <month year> <author>, <company> Page
  • doc.: IEEE 802.15-<doc#> <month year> <author>, <company> Page
  • doc.: IEEE 802.15-<doc#> <month year> <author>, <company> Page
  • doc.: IEEE 802.15-<doc#> <month year> <author>, <company> Page
  • doc.: IEEE 802.15-<doc#> <month year> <author>, <company> Page
  • Body area networks (BAN)

    1. 1. BAN (Body area networks) <ul><li>Definition </li></ul><ul><li>Usage scenarios </li></ul>Slide
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    3. 3. What is BAN ? <ul><li>A Body Area Network is formally defined by IEEE 802.15 as, &quot; a communication standard optimized for low power devices and operation on, in or around the human body to serve a variety of applications including medical, consumer electronics / personal entertainment </li></ul>Slide
    4. 4. A WBAN consists of multiple sensor nodes <ul><li>Each capable of sampling, processing, and communicating one or more vital signs (heart rate, blood pressure, oxygen saturation, activity) or environmental parameters (location, temperature, humidity,light). </li></ul><ul><li>Typically, these sensors are placed strategically on the human body or hidden in users’ clothes allowing ubiquitous health monitoring </li></ul>Slide
    5. 5. Body Area Networks –Target Position Average power consumption, sustained data rate Slide 1000 mW 500 mW 100 mW 50 mW 10 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 mW 20 mW Body Area Network 5 mW 2 mW
    6. 6. <ul><li>Usage Scenarios </li></ul><ul><ul><li>Body senor network </li></ul></ul><ul><ul><li>Fitness monitoring </li></ul></ul><ul><ul><li>Wearable audio </li></ul></ul><ul><ul><li>Mobile device centric </li></ul></ul><ul><ul><li>Video stream </li></ul></ul><ul><ul><li>Remote control & I/O devices </li></ul></ul>Slide
    7. 7. Body Sensor Network <ul><li>Medical application </li></ul><ul><ul><li>Vital patient data </li></ul></ul><ul><ul><li>Wireless sensors </li></ul></ul><ul><ul><li>Link with bedside monitor </li></ul></ul><ul><ul><li>Count on 10 – 20 sensors </li></ul></ul><ul><li>Five similar networks in range </li></ul><ul><li>Minimum setup interaction </li></ul><ul><li>Potentially wide application </li></ul><ul><li>Total traffic / patient < 10 kbps </li></ul>Slide
    8. 8. Body sensor networks <ul><li>Wireless sensor technology for health monitoring applications called Body Sensor Network. </li></ul><ul><li>BSN is a rich interdisciplinary area which revolutionizes the health care system by allowing inexpensive, continuous health monitoring with real-time updates of medical records via Internet </li></ul>Slide
    9. 9. Fitness Monitoring <ul><li>Central device is MP3 player </li></ul><ul><li>Wireless headset included </li></ul><ul><li>Expand functionality </li></ul><ul><ul><li>Speed, distance </li></ul></ul><ul><ul><li>Heart rate, respiration monitor </li></ul></ul><ul><ul><li>Temperature sensor </li></ul></ul><ul><ul><li>Pacing information </li></ul></ul><ul><ul><li>Location information </li></ul></ul><ul><ul><li>Wristwatch display unit </li></ul></ul><ul><ul><li>Etc. </li></ul></ul><ul><li>Total system load < 500 kbps </li></ul><ul><li>Synchronization may go faster </li></ul>Slide
    10. 10. Wearable Audio <ul><li>Central device is headset </li></ul><ul><li>Stereo audio, microphone </li></ul><ul><li>Connected devices </li></ul><ul><ul><li>Cellular phone </li></ul></ul><ul><ul><li>MP3 player, PDA </li></ul></ul><ul><ul><li>CD audio player </li></ul></ul><ul><ul><li>AP at home </li></ul></ul><ul><ul><li>Handsfree car </li></ul></ul><ul><ul><li>Remote control </li></ul></ul><ul><ul><li>Others </li></ul></ul><ul><li>Requires priority mechanism </li></ul><ul><li>Network load < 500 kbps </li></ul>Slide
    11. 11. Mobile Device Centric <ul><li>Mobile terminal is central point </li></ul><ul><li>Covers broad set of data </li></ul><ul><ul><li>Sensors – vital, other </li></ul></ul><ul><ul><li>Headset </li></ul></ul><ul><ul><li>Peripheral devices </li></ul></ul><ul><ul><li>Handsfree / car </li></ul></ul><ul><li>Provide gateway to outside </li></ul><ul><ul><li>Offload sensor data, other </li></ul></ul><ul><li>Requires priority mechanism </li></ul><ul><li>Network load < 500 kbps </li></ul>Slide
    12. 12. Personal Video <ul><li>Central device is video camera </li></ul><ul><ul><li>Camera sensor, recording, display </li></ul></ul><ul><li>Stream video content SDTV, HDTV </li></ul><ul><li>Connect other devices </li></ul><ul><ul><li>Personal storage device </li></ul></ul><ul><ul><li>Playback device w/ large display </li></ul></ul><ul><ul><li>Remote beamfinder </li></ul></ul><ul><ul><li>Location information (meta data) </li></ul></ul><ul><ul><li>Mobile communications device (MMS) </li></ul></ul><ul><ul><li>Home media server (sync) </li></ul></ul><ul><li>Total traffic load: 10 – 60 Mbps </li></ul>July 2006 Stefan Drude, Philips Slide
    13. 13. Remote Control & I/O Devices <ul><li>Remote control device </li></ul><ul><ul><ul><li>Increase consumer convenience </li></ul></ul></ul><ul><ul><ul><li>Makes headset control practical </li></ul></ul></ul><ul><ul><ul><li>Stand-alone vs shared function </li></ul></ul></ul><ul><ul><ul><li>Combine with wristwatch display ? </li></ul></ul></ul><ul><li>Printers </li></ul><ul><li>Identification, storage </li></ul><ul><li>Wireless pen </li></ul><ul><li>Complement BAN functionality </li></ul>July 2006 Stefan Drude, Philips Slide
    14. 14. Technical Requirements <ul><li>There is no specific standard for BANs </li></ul><ul><ul><li>Current standards come close for specific use cases, not broad enough </li></ul></ul><ul><ul><li>Issues: power consumption, discovery, QoS </li></ul></ul><ul><ul><li>Support for very low power devices, sensors </li></ul></ul><ul><li>Target less than 10% power consumption for communications compared to total device </li></ul><ul><li>Have single standard with broad range of supported data rate - scalability </li></ul>July 2006 Stefan Drude, Philips Slide
    15. 15. BAN Requirements - Draft <ul><li>Distance 2 m std, 5 m special </li></ul><ul><li>Piconet density 2 - 4 nets / m 2 </li></ul><ul><li>Devices per network max. 100 </li></ul><ul><li>Net network throughput 100 Mbit/s max. </li></ul><ul><li>Power consumption ~ 1mW / Mbps (@ 1 m distance) </li></ul><ul><li>Startup time < 100 us, or < 10% of TX slot </li></ul><ul><li>Latency (end to end) 10 ms </li></ul><ul><li>Network setup time < 1 sec (after initial setup, per device) </li></ul>July 2006 Stefan Drude, Philips Slide
    16. 16. BAN Requirements - Draft <ul><li>Implementation module cost </li></ul><ul><ul><ul><li>Should be comparable to Bluetooth module </li></ul></ul></ul><ul><li>Effective sleep mode(s) </li></ul><ul><li>Concept for effective, remote wake-up </li></ul><ul><li>Operates in global, license-exempt band </li></ul>July 2006 Stefan Drude, Philips Slide
    17. 17. BAN Requirements - Draft <ul><li>Privacy, security </li></ul><ul><li>Peer to peer communication, point to multi-point </li></ul><ul><li>Omni-directional antennas: small, flexible </li></ul><ul><li>Future proof [for 5 years?] </li></ul><ul><ul><li>Upgradeable, scaleable, backwards compatibility </li></ul></ul><ul><li>Support for several power management / consumption schemes [classes] </li></ul>July 2006 Stefan Drude, Philips Slide
    18. 18. BAN Requirements - Draft <ul><li>Quality of service, guaranteed bandwidth </li></ul><ul><ul><li>Specific definitions, depends on application </li></ul></ul><ul><li>Graceful degradation of services </li></ul><ul><ul><li>Depends on application, not always desireable </li></ul></ul><ul><li>Concurrent availability of asynchronous and isochronous channels </li></ul><ul><li>Low duty cycle and high duty cycle modes </li></ul><ul><li>Very low duty cycle applications (sensors) </li></ul>July 2006 Stefan Drude, Philips Slide
    19. 19. Interest Group on BAN in 802.15 (2) Conclusions on low data rate applications <ul><li>Support different classes of QoS for high reliability, asymmetric traffic, power constrained </li></ul><ul><li>Needs optimized, low complexity MAC and Networking layer </li></ul><ul><li>High number of simultaneously operating piconets required </li></ul><ul><li>Application specific, security/privacy required </li></ul><ul><li>Small form factor for the whole radio, antenna, power supply system </li></ul><ul><li>Locating radios (” find me”) mode </li></ul>July 2006 Stefan Drude, Philips Slide
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