Power Saving for DLS July 2006 Date:2006-07-15 Authors: Month Year June 2006 July 2006 Power Saving for DLS Authors: Date:2006-07-15 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/sb-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 <stuart.kerry@philips.com> 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 <patcom@ieee.org>. Emily Qi et al Emily Qi et al

Month Year June 2006 July 2006 Abstract This document is intended to open a discussion in TGv on Power Saving for Direct Link. Emily Qi et al Emily Qi et al

Background to DLS issue July 2006 Background to DLS issue DLS is a new mechanism initially proposed in 802.11e and now part of the current 802.11 REVma Direct link between peer non-AP STAs Inherently Bidirectional QoS can be supported (EDCA & HCCA) Block Ack for efficiency Why do we need DLS? Network efficiency improvement (may be > 2x if devices are close) Reduction in end to end delay and delay variance But it does not support power-saving Bidirectional nature of the link prevents this Each STA must be awake to receive transmissions from its peer while the DLS link exists Emily Qi et al

So what? Do we care about DLS power-saving? July 2006 So what? Do we care about DLS power-saving? Is it part of the scope of TGv? Emily Qi et al

Alternative types of solution July 2006 Alternative types of solution Bursty: ~ 100ms or several hundred’s of ms’s wake up (i.e. same performance as existing non-APSD power saving) Continuous: Power saving during QoS flows (i.e. between 20ms VoIP frames) Emily Qi et al

Straw Poll #1 Is Power Saving for DLS in scope of TGv? Yes: No: July 2006 Straw Poll #1 Is Power Saving for DLS in scope of TGv? Yes: No: Emily Qi et al

July 2006 Straw Poll #2 What type of power-saving performance should we try and provide (bursty or continuous) in TGv? Bursty: Continuous: Emily Qi et al

July 2006 Straw Poll #3 Do we need to add a new objective to support this, or is “Bursty” type of solution currently covered in Req2010? [Req2010] TGv shall support a “long term” Power Saving management feature; to optimize a STA’s power consumption during prolonged time periods of no transmission or reception activity in the order of several hundred’s of ms’s or above. Yes: No: Emily Qi et al

July 2006 Straw Poll #4 Do we need to add a new objective to support this, or is “Continuous” type of solution currently covered in TGv Objective? Yes: No: Emily Qi et al

July 2006 Call for interest Who’s interested in getting together to work on this? What should be the next steps: Proposal to TGv? What date? Emily Qi et al