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December 2021 doc.: IEEE 802.11-21/1914r0
Outline
• Abstract
• Recap of WLAN sensing procedure
• What we have in sensing instance ?
• Why monostatic radar?
• How monostatic radar?
• Why multiple monostatic radar?
• Standard support for multiple monostatic radar
• Summary
• References
Submission Slide 2 Rui Du (Huawei)
December 2021 doc.: IEEE 802.11-21/1914r0
Abstract
• In previously contribution[1,2], monostatic radar is
discussed as a potential sensing mode at 60 GHz.
• This contribution focus on the discussion of multiple
monostatic radar sensing at 60GHz. The advantages
and feasibility is investigated initially in this
contribution.
Submission Slide 3 Rui Du (Huawei)
December 2021 doc.: IEEE 802.11-21/1914r0
Recap of WLAN sensing procedure[3]
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Submission Slide 4 Rui Du (Huawei)
December 2021 doc.: IEEE 802.11-21/1914r0
What we have in sensing instance ?
• As the recap of WLAN sensing procedure shown in last slide, during
the sensing instance, one to many or many to one sounding may
happen[4].
Sensing PPDU transmission
Sensing Initiator Sensing Initiator
Sensing Receiver AP AP Sensing Transmitter
Sensing Responders Sensing Responders
Sensing Transmitters Sensing Receivers
STA1 STA2 STA3 STA4 STA1 STA2 STA3 STA4
• In previous contribution[1,2], monostatic radar is discussed as one
type of sensing mode that can be used for WLAN sensing.
Submission Slide 5 Rui Du (Huawei)
December 2021 doc.: IEEE 802.11-21/1914r0
Why monostatic radar?
• Compared with bistatic sensing, monostatic radar could achieve better performance
because of the fully synchronization between transmitting chain and receiving chain.
• An simple example is shown as follows. The transmitter and receiver are synchronized
in left figure and are not fully synchronized in the right figure.
In monostatic radar, the Doppler In bistatic sensing, the background noise
component corresponding to the target is increases and the frequency is aliasing
clear and the background noise is low. because of the carrier frequency offset
between transmitting chain and receiving
chain.
Submission Slide 6 Rui Du (Huawei)
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