1. FDMA MAC Support Date: 2018-05-06 Authors: Liwen Chu Marvell
Name
Affiliation
Address
Phone
Liwen Chu
Marvell
Liwen Chu, Marvell, et. al.

2. Recap: FDMA Transmissions
Within BSS with >20MHz operating channel, each 20MHz only contain one 4MHz sub-channel for wake-up signal transmission.
Similar to 11ax’s 20MHz only operation, one wake-up receiver can stay in one of the sub-channel in wide bandwidth.
Wake -
Up Signal for WUR Station # n
Spoof
Symbol
Legacy
Preamble m k l 20
MHz
Figure b .
FDMA MU WUR OOK transmissions using 80
MHz bandwidth
Wake -
Up Signal for WUR Station # n
Spoof
Symbol
Legacy
Preamble m 20
MHz
Figure a .
FDMA MU WUR OOK transmissions using 40
MHz bandwidth
Liwen Chu, Marvell, et. al.

3. WUR STA Operating Channel Negotiation
Month Year
Doc Title
WUR STA Operating Channel Negotiation
A STA negotiates its operating channel of WUR radio through Association Request/Response or a new defined Action frame (WUR Operating Channel Request/Response):
A new WUR Operating Channel element can be defined, e.g. with Request/Response Indication field, WUR radio Operating Channel (e.g. 1-octet Operating Class, 1-octet Channel Number).
After the negotiation, the STA tries to receive WUR frame in the negotiated 20MHz WUR Radio Operating Channel.
The working channel of the main radio is independent from the working channel of the WUR radio.
Wake -
Up Signal for WUR Station # n
Spoof
Symbol
Legacy
Preamble m k l 20
MHz
Figure b .
FDMA MU WUR OOK transmissions using 80
MHz bandwidth
STA n low power radio operating channel
STA m low power radio operating channel
STA k low power radio operating channel
STA l low power radio operating channel
Liwen Chu, Marvell, et. al.
Slide 3
John Doe, Some Company

4. FDMA Medium Access: Channel Switch or not Switch
Month Year
Doc Title
FDMA Medium Access: Channel Switch or not Switch
Before FDMA transmission, an AP does backoff in one 20MHz sub-channel of the FDMA channel (backoff channel).
AP can stay in one 20MHz channel as primary channel, e.g. BSS primary 20MHz channel or switch its backoff channel, e.g. when FDMA channel is not BSS operation channel.
If the backoff channel is switched, the NAV synchronization needs be done before the backoff at the new backoff channel, e.g. after NAVSYNCDelay or receiving a PPDU correctly.
Another option is that the NAV synchronization is not needed after channel switch
Wake -
Up Signal for WUR Station # n
Spoof
Symbol
Legacy
Preamble m k l 20
MHz
Figure b .
FDMA MU WUR OOK transmissions using 80
MHz bandwidth
Wake -
Up Signal for WUR Station # n
Spoof
Symbol
Legacy
Preamble m k l 20
MHz
Figure b .
FDMA MU WUR OOK transmissions using 80
MHz bandwidth
Slide 5
Liwen Chu, Marvell, et. al.
John Doe, Some Company

5. FDMA Medium Access: Punctured Transmission
Month Year
Doc Title
FDMA Medium Access: Punctured Transmission
Once the backoff counter become 0, the AP checks whether other (20MHz) sub-FDMA channel is idle PIFS before FDMA transmission.
The FDMA PPDU can be transmitted in idle 20MHz channels.
Wake -
Up Signal for WUR Station # n
Spoof
Symbol
Legacy
Preamble m k l 20
MHz
Figure b .
FDMA MU WUR OOK transmissions using 80
MHz bandwidth
Wake -
Up Signal for WUR Station # n
Spoof
Symbol
Legacy
Preamble m k l 20
MHz
Figure b .
FDMA MU WUR OOK transmissions using 80
MHz bandwidth
Slide 5
Liwen Chu, Marvell, et. al.
John Doe, Some Company

6. FDMA Medium Access: SU Medium Access with Channel Switch
Month Year
Doc Title
FDMA Medium Access: SU Medium Access with Channel Switch
Before SU WUR PPDU transmission to a non-AP STA, an AP does backoff in the 20MHz channel where the non-AP STA’s WUR radio is working.
AP can switch its channel when trying to awake different STAs
If the channel is switched, the NAV synchronization needs be done before the backoff at the new channel, e.g. after NAVSYNCDelay or receiving a PPDU correctly.
Another option is that the NAV synchronization is not needed after channel switch.
Once the backoff counter become 0, the AP transmits WUR frame.
Wake -
Up Signal for WUR Station # n
Spoof
Symbol
Legacy
Preamble m k l 20
MHz
Figure b .
FDMA MU WUR OOK transmissions using 80
MHz bandwidth
Wake -
Up Signal for WUR Station # n
Spoof
Symbol
Legacy
Preamble m k l 20
MHz
Figure b .
FDMA MU WUR OOK transmissions using 80
MHz bandwidth
Slide 6
Liwen Chu, Marvell, et. al.
John Doe, Some Company

7. Month Year
Doc Title
Straw Poll 1
Do you agree that 11BA supports punctured FDMA transmission: when the backoff counter become 0 in primary 20MHz channel, the AP checks whether other (20MHz) sub-FDMA channel is idle PIFS before FDMA transmission.
The FDMA PPDU can be transmitted in idle 20MHz channels.
Slide 5
Liwen Chu, Marvell, et. al.
John Doe, Some Company

8. Straw Poll 2 Do you support that
Month Year
Doc Title
Straw Poll 2
Do you support that
AP can switch its channel when trying to awake different STAs for single user wakeup
If the channel is switched, the NAV synchronization needs be done before the backoff at the new channel, e.g. after NAVSYNCDelay or receiving a PPDU correctly.
Another option is that the NAV synchronization is not needed after channel switch.
Slide 6
Liwen Chu, Marvell, et. al.
John Doe, Some Company