Doc.: IEEE 802.11-10/0259r02 Submission Date: 2010-03-15 802.11ad New Technique Proposal March 2010 Yuichi Morioka, Sony CorporationSlide 1 Authors:

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doc.: IEEE /0259r02 Submission Date: ad New Technique Proposal March 2010 Yuichi Morioka, Sony CorporationSlide 1 Authors:

doc.: IEEE /0259r02 Submission In order to differentiate from other 60GHz standards, ad should support Wireless LAN range ad should effectively migrate over past standards, to add support for this range Schemes that use 2.4/5GHz frames to assist 60GHz operation are proposed in this document Abstract March 2010 Yuichi Morioka, Sony CorporationSlide 2

doc.: IEEE /0259r02 Submission 60GHz is a promising technology that will provide throughputs over 1Gbps 60GHz can provide solutions for various applications from local file transfer to HD Video transfer Due to its benefits, there are competing standards that also use 60GHz ad needs clear and simple messaging to differentiate from non- WLAN technology 60GHz for Family March 2010 Yuichi Morioka, Sony CorporationSlide 3

doc.: IEEE /0259r02 Submission User will expect of ad… –the same experience as past plus faster data rate –the same ranges as past should provide consistant Wireless LAN ranges The because it is 60GHz excuse will not be understood by the user Users will not tolerate implementer centric excuses –Have caused many standards to die –May turn users away from ad ad must support a mode of operation that provides equivalent range as with past , to meet user expectation and to succeed in the market User Expectations for ad March 2010 Yuichi Morioka, Sony CorporationSlide 4

doc.: IEEE /0259r02 Submission Merit of ad is that it can build upon past successful standards Natural evolutionary path is to have a/b/g/n capability coinciding with ad –E.g a/n/ad system –We rarely see n stand alone chips ad should fully utilize its past assets, to better provide the expected user experience Migration with past March 2010 Yuichi Morioka, Sony CorporationSlide 5

doc.: IEEE /0259r02 Submission 2.4/5GHz & 60GHz Migration Scenario HGW/AP PC 2.4/5G 60G Dynamic Data Switching between 2.4/5G and 60G 60G Data assisted by 2.4/5G Management Two ways to use 2.4/5GHz to better facilitate 60GHz –Fast Session Transfer: Dynamic switch of Data Flow between 2.4/5GHz –2.4/5GHz Assisted 60GHz: Use of 2.4/5GHz to provide coordination between 11ad STAs. Data Flow is on 60GHz.

doc.: IEEE /0259r02 Submission 2.4/5GHz & 60GHz Migration Scenario HGW/AP PC 2.4/5G 60G Dynamic Data Switching between 2.4/5G and 60G 60G Data assisted by 2.4/5G Management Two ways to use 2.4/5GHz to better facilitate 60GHz –Fast Session Transfer: Dynamic switch of Data Flow between 2.4/5GHz –2.4/5GHz Assisted 60GHz: Use of 2.4/5GHz to provide coordination between 11ad STAs. Data Flow is on 60GHz.

doc.: IEEE /0259r02 Submission Beamforming would be the key technology to enhance 60GHz range However, beamforming could only be functional after discovery and training of the target device If a/b/g/n can coincide with ad, they can be used to better facilitate 60GHz beamforming 2.4/5GHz Assisted 60GHz March 2010 Yuichi Morioka, Sony CorporationSlide 8

doc.: IEEE /0259r02 Submission One simple solution is to utilize 2.4/5GHz Beacons to provide service discovery for 60GHz This will allow ad STAs to discover the presence of ad AP even when they are out of 60GHz omni range Definition of 60GHz Capability IE may be adequate 2.4/5GHz Beaconing for 60GHz Service Discovery March 2010 Yuichi Morioka, Sony CorporationSlide 9 Example 2.4/5GHz Beacon Structure

doc.: IEEE /0259r02 Submission Along with 2.4/5GHz Beacon, 60GHz Beacon may be sent to maintain interoperability with other 60GHz systems If the transmission timing of the 60GHz Beacon is notified using the 2.4/5GHz Beacon, it will be easier for the 11ad STAs to discover the necessity of updating its beamform information 2.4/5GHz Beaconing for 60GHz Beacon Offset (1/2) March 2010 Yuichi Morioka, Sony CorporationSlide 10 Example 2.4/5GHz Beacon Structure

doc.: IEEE /0259r02 Submission By notifying the tx timing of the 60GHz Beacon through 2.4/5GHz Beacon, 11ad STAs could adjust the rx beam-pattern to the AP at the defined timing –Provided that prior training sequence has occurred If the 60GHz Beacon is not received at the expected time (as in STA3 above), the STA immediately knows that re-training is necessary March 2010 Yuichi Morioka, Sony CorporationSlide /5GHz Beaconing for 60GHz Beacon Offset (2/2) 60GHz Beacon Reception Sequence

doc.: IEEE /0259r02 Submission Furthermore, 2.4/5GHz Beacons could provide Scheduling Information for 60GHz This information could be used to adjust the rx/tx beam-pattern to the intended receiver/transmitter to maximize the range 2.4/5GHz Beaconing for 60GHz Scheduling (1/2) March 2010 Yuichi Morioka, Sony CorporationSlide 12 Example 2.4/5GHz Beacon Structure

doc.: IEEE /0259r02 Submission The receiver (in the above case the AP) could adjust the rx beam- pattern to the scheduled transmitter –The transmitter (STA) could also beamform the RTS frame to the AP 2.4/5GHz Beaconing for 60GHz Scheduling (2/2) March 2010 Yuichi Morioka, Sony CorporationSlide 13

doc.: IEEE /0259r02 Submission Management frames such as 2.4/5GHz Re-Scheduling Frame can be defined to better facilitate 60GHz 2.4/5GHz frames can be used to communicate with all members of the BSS while 60GHz frames are used to communicate to one member 2.4/5GHz management frames for 60GHz - Broadcast March 2010 Yuichi Morioka, Sony CorporationSlide 14

doc.: IEEE /0259r02 Submission 2.4/5GHz management frames could also be beneficial to aid between STAs whose 60GHz training information is not available or too aged 2.4/5GHz Training Request/Confirm management frames can be used to initiate 60GHz training procedure 2.4/5GHz management frames for 60GHz - Training March 2010 Yuichi Morioka, Sony CorporationSlide 15

doc.: IEEE /0259r02 Submission 2.4/5GHz Control Frames can provide fully integrated system between 60GHz and 2.4/5GHz 2.4/5GHz Control Frames can assist 60GHz training –Signal the start of 60GHz Training Frame (e-RTS) –Provide feedback information and Acknowledgement information (e-CTS) 2.4/5GHz Control Frames to assist 60GHz BF March 2010 Yuichi Morioka, Sony CorporationSlide 16

doc.: IEEE /0259r02 Submission In order to maximize range, the 60GHz Training Frame could be configured in a way that it contains multiple beam patterns –The start of the 60GHz Training Frame could be signalled with 2.4/5GHz frame The beamformee could report back the strongest beam pattern it receives –Feedback can be sent using 2.4/5GHz training frames 2.4GHz Assisted 60GHz Training March 2010 Yuichi Morioka, Sony CorporationSlide 17 60GHz Training Frame Structure

doc.: IEEE /0259r02 Submission Several ways to effectively use 2.4/5GHz frames to assist 60GHz operation has been proposed –2.4/5GHz Beaconing –2.4/5GHz Management Frames assisted 60GHz scheduling –2.4/5GHz Management Frames assisted 60GHz training –2.4/5GHz Control Frames assisted 60GHz training The proposed methods will provide the necessary range to satisfy end user These key features will make ad an unique and successful 60GHz standard Conclusions March 2010 Yuichi Morioka, Sony CorporationSlide 18

doc.: IEEE /0259r02 Submission Do you feel an optional feature that uses 2.4/5GHz frames to assist 60GHz operation is worth further exploration within ad? –Yes –No –Dont know/Dont care Strawpoll March 2010 Yuichi Morioka, Sony CorporationSlide 19

doc.: IEEE /0259r02 Submission Reference March 2010 Yuichi Morioka, Sony CorporationSlide 20