Bluetooth SIG Coexistence Working Group

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Bluetooth SIGCoexistence Working Group

• Tod Sizer
• Chair, Coexistence Working Group
• Bluetooth Special Interest Group
• Bell Laboratories

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Bluetooth SIGCoexistence Working Group

• Who we are
• Coexistence Working Group Charter
• Areas we will investigate
• Areas we will not investigate
• Progress to date
• IEEE 802.15 TG2/ Bluetooth SIG Coexistence
  Working Group Coordination

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Who we are

• Bluetooth Special Interest Group (SIG) is a group
  of 9 Promoter Companies and over 1800 Adopter
  Companies committed to seeing Bluetooth be a
  ubiquitous, easy to use, wireless connectivity
  tool.
• The SIG has Working Groups which are charged to
  investigate areas of interest, draft working
  models, and draft specifications.
• The Working Groups are staffed by people from the
  9 promoter companies and (in the future) by a
  select number of representatives from Associate
  Members in some of the Working Groups.

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Coexistence Working Group Charter

• Work within the Bluetooth community as well as
  with cross industry groups (e.g. IEEE) to
  quantify the detrimental effects which Bluetooth
  and other wireless products will have on the
  performance of both. This information will be
  imperative for members of the Bluetooth community
  to advise their customers of the realistic
  performance one can expect in different
  environments as well a build products which span
  between Bluetooth and other wireless products.
  In addition, it will be used to disseminate SIG
  sponsored information on issues of coexistence to
  regulatory bodies.
• Develop methods of Bluetooth operation that will
  be used to improve coexistence between systems in
  the shared radio band. These will be issued as
  Best Practices white papers, improvements to the
  Bluetooth specifications, or formal profiles as
  necessary.
• To work closely with the Radio 2.0 Working Group
  to evaluate coexistence issues in new proposed
  radio designs.

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Areas we will investigate(1)

• Performance impact when Bluetooth and another
  device are operating in the 2.4 GHz band.

• Environments
• General Residential
• Apartment Building
• Business, closed office
• Business open/cubical office
• Airport, Shopping Mall, factory floor
• Outdoors

• Interfering systems
• Bluetooth
• 802.11 Frequency Hop
• 802.11 CCK
• HomeRF
• NPRM HomeRF Proposal
• DECT
• Microwave Ovens
• etc.

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Areas we will investigate(2)

• Develop Best Practices to optimize coexistence
• Special case Bluetooth and another WLAN standard
  in the same enclosure.
• If additions/changes in the Bluetooth
  specification can make a significant difference
  in coexistence, this will be proposed as a
  Bluetooth Profile.
• Work with the Radio 2.0 group who are charged
  with looking at higher rate radio options. Our
  work will ensure that coexistence issues are in
  the forefront when architectures are developed.

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Areas we will not investigate

• Implementation specific issues
• will make the job unmanageable.
• Hopefully will not make a significant impact on
  the conclusions of our studies.
• Several companies ARE developing simulations
  based on their particular implementation and can
  be used to check with the WG general results.

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Progress to date

• Met Face-to-Face in April, since then weekly by
  teleconference
• Have agreed to use Matlab as the common
  simulation platform.
• Now developing assumptions to be used in
  simulations - e.g. fading statistics, path loss
  models.
• First simulation results are imminent.

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IEEE 802.15 TG2/ Bluetooth SIG Coexistence
Working Group Coordination

• Would like to coordinate our efforts with those
  of the 802.15 Group
• Here to work with you on how best to work
  together and avoid duplication of efforts.
• Rich Ditch of Motorola is the liaison from the
  Working Group to the 802.15 TG2 efforts.