1. doc.: IEEE 802.11-04/0120r1 Submission January 2004 H.Bonneville, B.JechouxSlide 1 PHY Abstraction to be used in MAC simulation B.Jechoux, H.Bonneville Mitsubishi ITE

2. doc.: IEEE 802.11-04/0120r1 Submission January 2004 H.Bonneville, B.JechouxSlide 2 History –Questions raised in 11-03-0888-02 (Jeff Gilbert) PHY impairments: currently being fixed in FRCC PHY abstraction used in MAC: to be addressed –Large consensus in Jan 6th FRCC telecon for the need of a “unified way of modeling PHY error rate in MAC simulation”

3. doc.: IEEE 802.11-04/0120r1 Submission January 2004 H.Bonneville, B.JechouxSlide 3 PHY Abstraction problem –PHY/MAC Interface can drastically impact overall results: Time varying channel creates time varying PER Affects overall delay, jitter and goodput –Challenge Properly model detailed PHY characteristics Keep flexibility to adapt to various PHYs Keep simulation effort reasonable

4. doc.: IEEE 802.11-04/0120r1 Submission January 2004 H.Bonneville, B.JechouxSlide 4 Benefits –Transparency Assess MAC simulation result validity Allow cross checking –Comparability Fair comparison between System results Fair comparison between MACs –Merging ability MAC and PHY from different proposers

5. doc.: IEEE 802.11-04/0120r1 Submission January 2004 H.Bonneville, B.JechouxSlide 5 Straw polls –Straw Poll #1: Do we want a unified way of modeling PHY error rate in MAC/System simulation? –Straw Poll #2: When must this be completed by? –By the time of the call for proposals –By the session following the call for proposals –The call for proposals should not be issued until this completes (by next session latest)