Project:%20IEEE%20P802.15%20Working%20Group%20for%20Wireless%20Personal%20Area%20Networks%20(WPANS)

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Project IEEE P802.15 Working Group for Wireless
Personal Area Networks (WPANS)

• Submission Title XtremeSpectrum -- SG3a CFA
  response
• Date Submitted January 14, 2002
• Source Pierre Gandolfo Company XtremeSpectrum
  Inc.Address 1001 N Rengstorff Avenue, Suite
  200, Mountain View, CA, 94043Voice (650) 230
  0494, Fax [phone], E-mail
  pgandolfo_at_xtremespectrum.com
• Re IEEE P802.15 ALT PHY Study Group was formed
  with the charter of drafting a PAR and 5 Criteria
  for an ALT PHY option for the 802.15.3 MAC
• Abstract Description of a class of applications
  and PHY requirements for 802.15.3a in response to
  the CFA request
• Purpose for January 2002 interim
• Notice This document has been prepared to assist
  the IEEE P802.15. It is offered as a basis for
  discussion and is not binding on the contributing
  individual or organization. The material in this
  document is subject to change in form and content
  after further study. The contributor reserves the
  right to add, amend or withdraw material
  contained herein.
• Release The contributor acknowledges and accepts
  that this contribution becomes the property of
  IEEE and may be made publicly available by
  P802.15.

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Agenda

• Minimum Desired Data Bandwidth for High Speed
  Cable Replacement
• Market Trends for Home Networking
• Evernet or the need for implementing Scatternet

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Desired Data Bandwidth for HS Cable Replacement

• High Speed DV transfer from a 1394 digital
  camcorder to a PC can peak at 50Mbps
• Digital Video Editing is todays single most
  popular usage for 1394
• 8M camcorders were shipped in 2001 and 12.7M will
  be shipped in 2004
• New Apple IPOD (MP3 Player) is equipped with a
  1394a port (100Mbps)
• Capable of downloading an entire CD in less than
  10 seconds and a full 5GB of music from a PC in
  less than 10 minutes
• Its 5GB HD doubles as a Firewire mobile disk for
  files and applications (presentations, pictures,
  documents, entire digital movies)
• Total AV bandwidth for DVD players is currently
  limited to around 36Mbps on the 1394 bus
• This allows good video quality using 30Mbps (30
  frames/s, 720x576 pixels per frame, 24-bit
  color/pixel)
• Rest of Bandwidth (6Mbps) is available for audio
• The less you compress the video, the better it
  looks (lt15)

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Desired Data Bandwidth for HS Cable Replacement
(II)

• Video gaming with high quality graphics running
  at 60 fps with a resolution moving towards HDTV
  (1280x720) will also require some extra bandwidth
• High Resolution digital still cameras (gt5M
  pixels) drive the need for memory cards with
  higher storage capacity and connections with
  faster data transfer speed
• CF 8MB 512MB
• SmartMedia cards (Fuji Olympus) 8 128MB
• IBM Microdrive 340MB (can hold hundreds of high
  resolution images or 6 hours of CD quality
  audio), 500MB, 1GB
• Sony Memory Stick 64MB and 128MB
• SanDisk MM Card 8MB 64MB
• High Resolution Printer and Scanner (4000 dpi)
  are equipped with a 1394 connection (100Mbps and
  above)
• Minimum Required Effective Throughput 50Mbps

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Max. 802.15.3 Effective Throughput (for one
stream and per packet size)

• Parameters
• Superframe size 20ms, Preamble/Header data rate
  22Mb/s, Header (14 bytes), 3MTS slots per
  superframe (one for Association and two open
  ones), Imm-ACK, Beacon Frame Body 46 bytes, no
  CAP, No Guard Times

• Ideal Scenario is assumed one stream only in an
  error-free environment (I.e upper bound
  performance)
• A Data Rate greater than 55Mbps is needed to
  support the applications previously described

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PHY Requirements for High Speed Cable Replacement

• End-users want nothing less than the performance
  of a wired network without the wires
• 1394a already supports 100, 200, and 400Mbps
• USB 2.0 specifies a maximum speed of 480Mbps
• Range is not really important for this specific
  application since 1394a specifies a maximum cable
  length of 4.5m
• Limited Number of non-overlapping channels (3)
• 3 independent end-users downloading their
  respective pictures to 3 different kiosks
• To sum up, Wireless without Compromise
• Very High Speed PHY Technology
• Minimum Effective Throughput 50Mbps
• Low Power PHY Technology
• Low Cost PHY Technology
• Small form factor (embedded applications)
• As secure as a cable

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Mono-Cluster Home Network
Legend Mono-cluster Single Wireless
Distribution Point covering the entire home
premise area

• The Mono-Cluster approach is unsuited to the
  requirements of concurrent multimedia-rich
  applications
• Poor effective throughput per user (shared media)
• Lack of Flexibility
• no two houses or even apartments are alike (room,
  size, wall, applications)
• One macrocell network cannot be optimized for
  every single end-user scenario

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Multi-Cluster Home Network
Legend Multi-cluster Multiple Wireless
Distribution Points covering the entire home
premise area
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PHY Requirements for Multi-cluster Home Network

• Shorter Distances allow for spectrum reuse,
  thereby serving more users/devices/applications
  while enabling simpler wireless devices (low
  power, low cost, small form factor)
• Performance is the ratio of Spatial capacity by
  Power consumption, cost and form factor
• Maximizing individual cluster speed while
  maintaining a low level Co-Channel interference
  (CCI)
• The adequate number of non-overlapping channels
  will depend on the selected modulation waveform
• Multipath Environment JTC Residential A and B

bps/sqm2
W..m3
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Scatternet or Multi-hop Ad-hoc Network
Coordinators

• Definition Autonomous, robust, efficient and
  dynamic system made of multiple piconets and
  connected to each other by some wireless links
  (hops)
• Goal Discovering/updating the links between
  these different groups of devices and building
  paths (routing) across the multi-hop ad-hoc
  network
• Advantages Devices belonging to different
  clusters can exchange data without relying on a
  fixed wired backbone 02/xxx
• Inexpensive alternative to cell-based mobile
  network infrastructure
• No dependency -- Most wired backbones do not
  support the needed data rates and QoS provisions
  for MM applications
• Undeserved segment (no competition)

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Conclusion

• Broad Set of applicability
• Video Editing
• Digital Camcorders, PCs, Pro AVs
• Casual Storage
• PCs, external storages, digital still cameras,
  MP3 players
• High Resolution PC Peripherals
• A/V Networking
• DVCRs, DVDs, HDTV, Game Consoles, set-top
  boxes,
• Multiple Vendors and numerous users
• Ubiquitous Value Network Moving to a
  Networking AV broadband area
• Distinct Identity Wireless without compromise
• Several companies have already demonstrated
  technical and economic feasibility