1. doc.: IEEE 802.11-06/1845r0 Submission November 2006 Bruce Kraemer, MarvellSlide 1 10 MHz Channels Notice: This document has been prepared to assist IEEE 802.11. 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 grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.11. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures http://ieee802.org/guides/bylaws.pdf, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.11 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at.http://ieee802.org/guides/bylaws.pdfstuart.kerry@philips.compatcom@ieee.org Date: 2006-11-17 Authors:

2. doc.: IEEE 802.11-06/1845r0 Submission November 2006 Bruce Kraemer, MarvellSlide 2 10 MHz CIDs 138 139 160 161 20MHz bandwidth mode not defined for 10MHz channel spacing Introduce text for 20MHz HT mode in 10MHz channels comment: maybe related to 40 MHz mode in 20 Mhz channels. 20MHz bandwidth mode not defined for 10MHz channel spacing Introduce text for 20MHz HT mode in 10MHz channels comment: maybe related to 40 MHz mode in 20 Mhz channels. 20MHz transmission is not defined for 10MHz channel spacing Clarification by commentor: Are extensions of 11j being proposed for 11n; i.e., will there be a 20 MHz mode (half clock of 40 MHz) included in the draft? Likewise, will there be a 10 Mhz mode (half clock of 20 MHz) included in the draft? define 20MHz mode for the 10MHz channel sapcing Deferred for explanation fo comment by Anuj. Previous resolution approved unanimously by PHY: As per submission 1315. 20MHz transmission is not defined for 10MHz channel spacing Clarification by commentor: Are extensions of 11j being proposed for 11n; i.e., will there be a 20 MHz mode (half clock of 40 MHz) included in the draft? Likewise, will there be a 10 Mhz mode (half clock of 20 MHz) included in the draft? define 20MHz mode for the 10MHz channel sapcing Deferred for explanation fo comment by Anuj. Previous resolution approved unanimously by PHY: As per submission 1315.

3. doc.: IEEE 802.11-06/1845r0 Submission November 2006 Bruce Kraemer, MarvellSlide 3 Investigation Amendment J introduced 5 & 10 MHz channelization options to address Japanese regulatory (MIC) and commercial requirements (ARIB) associated with the use of country unique spectrum allocation between 4.9 & 5.1 GHz. The text introduced by J has been relocated by MA rev 9 into Clauses…. TGn was formed for the purpose of High Throughput and although it could be argued that 5MHz “n” channels are higher throughput than 5 GHz “a” channels this is not in the spirit of High Throughput. 802.11 may wish to extend the use of “n” into 5 & 10 MHz channels at a later date if an interested group of people obtain approval to form a task group. The current draft is based upon the underlying precept that there will not be overlapping channel assignments. Allowing 20 MHz channels with 10 MHz channel spacing would violate this guidleine. TGn will not pursue changes to the draft to accommodate channels other than 20 or 40 MHz.

4. doc.: IEEE 802.11-06/1845r0 Submission November 2006 Bruce Kraemer, MarvellSlide 4 Table n54 (D1.06)

5. doc.: IEEE 802.11-06/1845r0 Submission November 2006 Bruce Kraemer, MarvellSlide 5 Proposed Comment Resolution for CIDs 138, 139, 160, 161 Counter: TGn is not chartered to pursue channels other than 20 or 40 MHz. Additionally, the current draft is based upon the underlying precept that there will not be overlapping channel assignments. Hence, allowing 20 MHz channels with 10 MHz channel spacing would violate this guideline. 10 MHz channels are only mentioned in clause 21.2.2 TXVECTOR and RXVECTOR parameters inside Table n64 in reference to legacy devices. TGn Editor: In D1.06, modify Table n54 as follows Add an informative note to table n54 (D1.06) “Note: Channel spacings of 10 MHz indicated for L_Datarate do not apply to HT devices.”