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Doc.: IEEE 802.11-11/1510r0 Submission November 2011 Marc Emmelmann, FOKUSSlide 1 Enablement in 5GHz for FILS Date: 2011-11-07 Authors:

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Presentation on theme: "Doc.: IEEE 802.11-11/1510r0 Submission November 2011 Marc Emmelmann, FOKUSSlide 1 Enablement in 5GHz for FILS Date: 2011-11-07 Authors:"— Presentation transcript:

1 doc.: IEEE 802.11-11/1510r0 Submission November 2011 Marc Emmelmann, FOKUSSlide 1 Enablement in 5GHz for FILS Date: 2011-11-07 Authors:

2 doc.: IEEE 802.11-11/1510r0 Submission November 2011 Marc Emmelmann, FOKUSSlide 2 Abstract Ideas on Fast Initial Link Set-Up within the 5GHz band via enablement on a different channel. To be used to stimulate discussion in joint 802.11 REG/ai session

3 doc.: IEEE 802.11-11/1510r0 Submission November 2011 Marc Emmelmann, FOKUSSlide 3 The Goal Understand the idea to expedite AP discovery in 5GHz Discuss the design space under the constrain to have a solution which does not interfere with “primary users” Do not limit the design scope by a country-specific regulation. Rather consider options enabling different approach in a “region-specific” manner Understand the limitations of regulation in certain countries as they exist today

4 doc.: IEEE 802.11-11/1510r0 Submission November 2011 Marc Emmelmann, FOKUSSlide 4 Idea 5GHz part operates “as known”  Master device w/ channel sensing 2.4GHz part asks 5GHz part which channel are in use (or is told)  „real time synchronization of that shared knowledge“ Non-AP STA conducts active scanning in 2.4GHz band  receives valid 5GHz channel list Option a) verify this information via passive scanning on specific 5GHz channel Option b) directly start link set-up on 5GHz channel Continue w/ regular 5GHz operation Single Device / Box 2.4 GHz AP 5 GHz AP Internal Mgmt. Not accessible by user Non-AP STA 2.4 & 5 GHz operation Active scan  receive 5GHz channel list Optional passive scan on channel for verification Link-Set Up Non-AP STA is under the control of the master (single device) Open issues: Enabling signal is not received in 5GHz channel Different propagation characteristics of different frequency bands  larger tranmission range of 2.4GHz as compared to 5GHz

5 doc.: IEEE 802.11-11/1510r0 Submission Enabling signal not received in 5GHz band Not a technical issue; constrains imposed by regulation –FCC 15.202: “… Master devices marketed within the United States must be limited to operation on permissible part 15 frequencies....“ –Europe: Not sure; could not find a similar statement. Just the “operation under the control of a master” is required. –Possible approach: specify standard for this feature to work only in specific regulatory domains (per given annex). Does not matter if we “verify” via passive scanning –as in this case, it is legally not an enabling-signal but a hint where to look for the beacon. –Enablement is legally done via beacon reception as today BUT: Could work with FCC constrains if enabling signal is received in any 5GHz channel November 2011 Marc Emmelmann, FOKUSSlide 5 Is my under- standing of 15.202 correct?

6 doc.: IEEE 802.11-11/1510r0 Submission Different transmission ranges of 2.4 & 5GHz This is a severe technical issue. We might receive an enabling signal at a distance far away from the master device (AP) which is not covered by the sensing requirements for 5GHz operation If legislation says that a slave (non AP-STA) must not emit any radiation unless the controlling master device has verified that operation in a specific frequency is permissible (at the location of the slave), we will have to verify via passive scanning. Are there other concepts, e.g. database-based information, that can be used (also for operation in other bands i.e. TVWS) ? November 2011 Marc Emmelmann, FOKUSSlide 6 My understanding is that Europe and US are to restrictive

7 doc.: IEEE 802.11-11/1510r0 Submission Summary Statements to be verified based on discussion w/ 802.11 REG “enablement” outside the frequency band of concern (here 5GHz) requires –Verification via passive scanning for 5GHz operation (sensing based detection of primary) due to Different propagation range of signal Regulatory requirements –May work for database-based approaches  Talk to 11af „Enablement“ inside the 5GHz frequency band seems to be possible; not verification via passive scanning required. November 2011 Marc Emmelmann, FOKUSSlide 7

8 doc.: IEEE 802.11-11/1510r0 Submission November 2011 Marc Emmelmann, FOKUSSlide 8 References http://www.unwantedemissions.com/47cfr/current/47C FR015.pdfhttp://www.unwantedemissions.com/47cfr/current/47C FR015.pdf FCC TCB slides discussing FCC KDB 59428 –http://www.fcc.gov/oet/ea/presentations/files/apr11/3b.SoftwareCo nfigurationControl-RDJS.pdf http://www.fcc.gov/oet/ea/presentations/files/apr11/3b.SoftwareCo nfigurationControl-RDJS.pdf –FCC KDBs 594280 and 178919 are about permissible changes and client devicesFCC KDBs 594280 and 178919 are about permissible changes and client devices http://transition.fcc.gov/oet/ea/eameasurements.html –is a list of KDBs regarding testing proceduresis a list of KDBs regarding testing procedures http://transition.fcc.gov/oet/ea/presentations/files/oct11/ 3RF-Exposure-Procedures-Update-102611-KC.pdfhttp://transition.fcc.gov/oet/ea/presentations/files/oct11/ 3RF-Exposure-Procedures-Update-102611-KC.pdf –is a presentation on RF Exposure Procedures is a presentation on RF Exposure Procedures

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