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Project: IEEE 802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE 802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [TG4a Comment Resolution – Sub GHz UWB PHY] Date Submitted: [March 2006] Source: Author [Patrick Houghton] Company [Aether Wire & Location, Inc]

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Project: IEEE 802.15 Working Group for Wireless Personal Area Networks (WPANs)

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  1. Project: IEEE 802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [TG4a Comment Resolution – Sub GHz UWB PHY] Date Submitted: [March 2006] Source: Author [Patrick Houghton] Company [Aether Wire & Location, Inc] Address [520 E. Weddell Drive, Suite 5, Sunnyvale, CA USA] Voice:[408-400-0785], E-Mail:[patrick@aetherwire.com] Re: [Comment Resolution -- Sub GHz UWB PHY] Abstract: [Comment Resolution -- Sub GHz UWB PHY] Purpose: [Provide framework for revision baseline draft] Notice: This document has been prepared to assist the IEEE 802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) 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 802.15.

  2. Sub GHz PHY - Description and Purpose • Rationale: • Sub-GHz PHY provides better channel characteristics for ranging (key feature of 15.4a PAR) • Advantages for safety-of-life situations where channel reliability is a paramount feature • Current Situation: • UWB regulations exist only in the US, under the FCC • Other regions appear to not allow sub-GHz except possibly under licensed operation

  3. Responses to Comments • Comment 86 - Ed Callaway: 6.1.2.1c • Is there a country where sub-GHz PHY is legal? • Resolution: • There are opinions that the US FCC allows sub-GHz for position location applications • Anticipate Regulatory changes over next few years • Many regions have not yet provided initial UWB regulations • US FCC has indicated that UWB regulations will likely be relaxed based on future deployment experience • There are precedents for exceptions to the Restricted Band regulations, for example the UWB rules themselves (47 CFR 15, sub-part F) • The Committee has provided an optional mode that could provide enhanced ranging performance for evolving regulations

  4. Responses to Comments • Comment 287 - Rick Roberts: 6.1.2.1c • We don’t need separate channel numbering for Sub-GHz PHY • Resolution: • Add the channel to table 1b. Delete section 6.1.2.1c

  5. Responses to Comments • Comment 389 - James Gilb: 6.1.3 • The table only has the parameters for two of the three PHYs defined in this standard (and one is missing its numbers). The parameters for the sub-GHz PHY are missing. • Resolution: • Add the parameters for sub-GHz PHY

  6. Responses to Comments • Comment 507 - Oyvind Janbu: 6.1.1 • Table 1 shows three new UWB PHYs, but only two UWB PHYs are defined (sub-GHz and 3000-10000MHz) • Resolution: • Merge UWB PHYs into one PHY with three different frequency bands (Sub-GHz, Low Band and High Band), just as two frequency bands are defined for 868/915 PHY in 15.4-2003. Alternatively, split UWB PHYs into three PHYs (Sub-GHz, Low Band and High Band)

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