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Fast Active Scan Proposals

Fast Active Scan Proposals. Moo Ryong Jeong, Fujio Watanabe, Toshiro Kawahara DoCoMo USA Labs mrj@ieee.org Zhun Zhong Philips zhun.zhong@philips.com. What the proposal is about?. NOT about whether to use active scanning NOT about when to use active scanning

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Fast Active Scan Proposals

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  1. Fast Active Scan Proposals Moo Ryong Jeong, Fujio Watanabe, Toshiro Kawahara DoCoMo USA Labs mrj@ieee.org Zhun Zhong Philips zhun.zhong@philips.com Moo Ryong Jeong, DoCoMo USA Labs.

  2. What the proposal is about? • NOT about whether to use active scanning • NOT about when to use active scanning • It is about, if active scanning is used, how the process can be improved. Moo Ryong Jeong, DoCoMo USA Labs.

  3. Proposed changes • Allow STA to send directed probe request • AP shall reply with ACK and send the probe response later, or if capable, may reply with probe response within SIFS (similar to PS-Poll) • If AP opts to response the probe response later, it may send the probe response after the medium is idle for PIFS. Moo Ryong Jeong, DoCoMo USA Labs.

  4. Benefit • When the AP of interest is reachable, get the probe response faster. • When AP of interest is not reachable, learn this fact faster. • Eliminate unnecessary probe responses from APs not of interest. Moo Ryong Jeong, DoCoMo USA Labs.

  5. Motion • To instruct the editor to incorporate the text from document 03/0623r3 into the next TGk draft. Moo Ryong Jeong, DoCoMo USA Labs.

  6. Backup slides Moo Ryong Jeong, DoCoMo USA Labs.

  7. Current standard does not allow directed Probe Request • Definitions • 3.16 directed address: See:unicast frame. • 3.48 unicast frame: A frame that is addressed to a single recipient, not a broadcast or multicast frame. Syn:directed address. • Active scanning • 11.1.3.2.2 Active scanning procedure c) Send a probe with the broadcast destination, SSID, and broadcast BSSID; • Annex C.3 State machines for MAC stations • See page 380 of 802.11/1999 on Service Synchronization_Sta Moo Ryong Jeong, DoCoMo USA Labs.

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