IEEE P802.15 Wireless Personal Area Networks Project IEEE P802.15 Working for Wireless Personal Area Networks (WPANs) Title Date 17 August 2011 Submitted Voice: 1 510 400 2936 Source Fax: Hayward, CA E-mail: jsimon@dustnetworks.com Re: Editorial instructions in support of proposed resolutions to sponsor ballot comments (J. Simon) Abstract Editor instructions for fixing ACK/NACK encoding Purpose Provide instructions to the editor to correct problems identified with the TSCH ACK/NACK time correction description in the sponsor ballot draft D6 review. 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(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 P802.15. The ACK/NACK Time Correction header IE is described as a 16-bit signed integer, which requires all bits be used, but the MSB is described as being reused to indicate a NACK. The original intent was to bound the correction to +/- 2 ms, so we only need 11 of the field for actual representation. Language needs to be added to indicate how to handle the encoding properly. 0 to 2047 µs = 0x000 - 0x7FF -1 to -2048 µs = 0xFFFF - 0xF800
IEEE P802.15 Wireless Personal Area Networks Project IEEE P802.15 Working for Wireless Personal Area Networks (WPANs) Title Date Submitted 17 August 2011 Source Hayward, CA Voice: 1 510 400 2936 Fax: E-mail: jsimon@dustnetworks.com Re: Editorial instructions in support of proposed resolutions to sponsor ballot comments (J. Simon) Abstract Editor instructions for fixing ACK/NACK encoding Purpose Provide instructions to the editor to correct problems identified with the TSCH ACK/NACK time correction description in the sponsor ballot draft D6 review. 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(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 P802.15. The ACK/NACK Time Correction header IE is described as a 16-bit signed integer, which requires all be used, but the MSB is described as being reused to indicate a NACK. The original intent was to bound the correction to +/- 2 ms, so we only need 11 bits of the field for actual representation. Language needs to be added to indicate how to handle the encoding properly. 0 to 2047 µs = 0x000 - 0x7FF -1 to -2048 µs = 0xFFFF - 0xF800