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Integration of TSF Timer Accuracy in IEEE 802.11 for Enhanced Stability and Future Use

This document discusses the proposed integration of TSF timer accuracy and stability parameters in the IEEE 802.11 standard. It highlights the accuracy requirements (no worse than 100 ppm) and introduces a new field in the TSF timer for specifying accuracy and stability metrics. The paper presents a straw poll to gauge support for extending the TSF Timer Accuracy field by incorporating additional stability information. It aims to enhance the reliability of transmissions and accommodate future developments, ensuring the TSF timer meets evolving needs.

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Integration of TSF Timer Accuracy in IEEE 802.11 for Enhanced Stability and Future Use

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  1. CC9 Possible Integration with TSF Timer accuracy regarding CID773 & 774 • Date:2013-07-18 Authors: Shusaku Shimada, Schubiquist TG

  2. Abstract • TSF timer accuracy element has been introduced to indicate the accuracy of TSF timer in transmitting STA, which is no worse than 100ppm specified in the base standard, IEEE802.11-2012. • TSF accuracy related information includes an absolute accuracy of initial tolerance and a relative stability which is the sum of aging rate and worst temperature drift after peer TSF timer has synchronized with it, and maybe some other useful parameter in future. • For this end, TSF timer accuracy field is additionally defined for the stability and future use of expansion. Shusaku Shimada, Schubiquist TG

  3. TSF timer accuracy • Base standard says; The accuracy of the TSF timer shall be no worse than ±0.01%. • 7bit field is sufficient to specify 100ppm (0.01%). • TSF Timer Accuracy field of TSF Timer Accuracy Element [8.4.2.170p] • TSF Timer Accuracy field encoding Shusaku Shimada, Schubiquist TG

  4. Straw Poll • Do you agree to extend TSF Timer Accuracy field by limiting the accuracy value to 7bit to accommodate other relating information like TSF Stability than the absolute (TSF) Accuracy for future usage? • Yes • No • Abstain Shusaku Shimada, Schubiquist TG

  5. Straw Poll • Do you agree to integrate the TSF Stability information and the reserved future usage as described in page 3 ? • Yes • No • Abstain Shusaku Shimada, Schubiquist TG

  6. Reference • [1] 11-12/130r0 “Beacon Reception of Long Sleeper” Shusaku Shimada, Schubiquist TG

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