May 2007doc.: IEEE 802.11-07/0740r0
IEEE P802.11
Wireless LANs
Date: 2007-05-15
Author(s):
Name / Company / Address / Phone / email
John R. Barr / Motorola / 1303 E. Algonquin Road, Schaumburg, IL 60196 / +1-847-962-5407 /
Contents
Morning Session Tuesday 08:00 – 10:00
Supporting Drop Eligibility in IEEE 802.11 MAC, Osama Aboul-Magd, 11-07/693r0
Dynamic Point-to-Point OFDM Adaptation for IEEE 802.11a/g Systems, Marc Emmelmann, 11-07/0720r0.
Real-Time Deployment of a Reliable Multihop Network, Michael Souryal, Nader Moayeri, 11-07/297r0
Mechanism for Link Quality Measurement, Michael Souryal, Nader Moayeri, 11-07/650r0
Adjournment
Morning Session Tuesday 08:00 – 10:00
WNG SC (Wireless Next Generation Standing Committee) meeting called to order by Donald Eastlake at 08:04.
The IEEE 802 & IEEE 802.11 Policies and Rules were shown by Donald Eastlake, together with licensing terms and associated conditions. No comments or objections were noted.
The agenda was reviewed (11-07-0705r1). Approved by unanimous consent.
The March 2007 Orlando WNG SC minutes (11-07-0507-00-0wng-minutes.doc) were approved by unanimous consent.
Attendance approximately 50.
Supporting Drop Eligibility in IEEE 802.11 MAC, Osama Aboul-Magd, 11-07/693r0
Presented by Osama Aboul-Magd, Nortel Networks.
Question: What are you proposing?
Answer: Just for informational purposes now. Should be considered in maintenance group. Will take to 11mb.
Question: Pass through or drop packets that don’t meet prioritization.
Answer: QoS study group may look at this.
Question: VTS looking at this. Good candidate topic for that group.
Question: If 802.1 has decided how to handle, should we just follow?
Answer: Use the mechanisms as defined.
Dynamic Point-to-Point OFDM Adaptation for IEEE 802.11a/g Systems, Marc Emmelmann, 11-07/0720r1.
Presented by Marc Emmelmann, Technical University of Berlin.
Question: Why dynamic OFDM performance not as good when SNR is high?
Answer: Depends on channel estimation. If bad choice, not as good a possible. Choice is for highest possible data rate, not highest BER.
Question: For 0 SNR, what modulation would be chosen?
Answer: Some channels will have better results.
Question: Would expect peak SNR to be at least 15 to get 2 MB/s.
Question: Interleaver modifications?
Answer: Yes
Question: Simulations include all overhead?
Answer: Yes. Multiple runs to get average results.
Question: MAC efficiency with small size messages typically used for control.
Answer: Use different selection criteria. Reserved bits included to handle such cases.
Question:
Answer: Need to be able to estimate channel very close to time of transmission, not historical.
Question: Not commonly used because of need for additional estimation.
Answer: Right.
Straw Poll: Should further work be presented to 802.11 WNG including: additional simulation results of the just seen point-to-point and multi-user dynamic OFDM transmissions employing and extended 802.11a/g?
Yes-8, No-3, Many more people in the room that did not vote.
Real-Time Deployment of a Reliable Multihop Network, Michael Souryal, Nader Moayeri, 11-07/297r1
Presented by Michael Souryal, NIST. Second presentation on the agenda will be done at a later 11s session this week.
Question: What is advantage of breadcrumb vs a licensed band with sufficient power?
Answer: May be some situations where a single base station would not work. E.g., underground.
Question: Use ranging as well for location of people?
Answer: Absolutely. Work on-going at NIST on this.
Adjournment
Chair: Move for WNG to adjourn
No objections.
Meeting adjourned at 9:21.
Submissionpage 1John R. Barr, Motorola