DEVICES AND METHODS FOR PUNCTURED TRANSMISSION IN WIRELESS NETWORK
An access point, AP ( 110 ), configured to perform a sounding procedure with one or more associated non-AP stations ( 120 ) in a wireless local area network ( 100 ) is provided. The AP ( 110 ) comprises a processing circuitry ( 111 ) configured to generate a null data PPDU announcement, NDPA, frame, wherein the NDPA frame comprises for each of the one or more associated non-AP stations ( 120 ) a station info field. The station info field comprises a partial BW info subfield, including a feedback bitmap and an indication of a resolution and/or a range of the feedback bitmap with a 20 MHz or 40 MHz subchannel resolution for a Sounding NDP with a bandwidth of up to 320 MHz. The AP ( 110 ) further comprises a communication interface ( 113 ) configured to transmit the NDPA frame to the one or more associated non-AP stations ( 120 ). Moreover, a corresponding non-AP station ( 120 ) is disclosed.
1 . An access point (AP) ( 110 ), configured to perform a sounding procedure with one or more associated non-AP stations ( 120 ) in a wireless local area network ( 100 ), wherein the AP ( 110 ) comprises:
a processing circuitry ( 111 ) configured to generate a null data PPDU announcement (NDPA) frame ( 201 ), wherein the NDPA frame ( 201 ) comprises for each of the one or more associated non-AP stations ( 120 ) a station info field ( 500 ), wherein the station info field ( 500 ) comprises a partial BW info subfield ( 503 ), including a feedback bitmap ( 503 c ) and an indication of ( 503 a,b ) a resolution and/or a range of the feedback bitmap ( 503 c ) with a 20 MHz or 40 MHz subchannel resolution for a Sounding NDP ( 203 ) with a bandwidth of up to 320 MHz; and
a communication interface ( 113 ) configured to transmit the NDPA frame ( 201 ) to the one or more associated non-AP stations ( 120 ).
2 . The AP ( 110 ) of claim 1 , wherein the NDPA frame ( 201 ) further comprises a disabled channel indication, wherein the disabled channel indication is indicative of one or more respective 20 MHz subchannels to be excluded in any further frames exchanged between the AP ( 110 ) and the one or more non-AP stations ( 120 ) associated with the AP ( 110 ).
3 . The AP ( 110 ) of claim 1 , wherein the communication interface ( 113 ) is further configured to transmit a beacon frame to the one or more associated non-AP stations ( 120 ), wherein the beacon frame comprises a disabled channel indication, wherein the disabled channel indication is indicative of one or more respective 20 MHz subchannels to be excluded in any further frames exchanged between the AP ( 110 ) and the one or more non-AP stations ( 120 ) associated with the AP ( 110 ).
4 . The AP ( 110 ) of claim 2 , wherein the communication interface ( 113 ) is configured to transmit the Sounding NDP ( 203 ) to the one or more associated non-AP stations ( 120 ) punctured in accordance with the disabled channel indication.
5 . The AP ( 110 ) of claim 4 , wherein the communication interface ( 113 ) is configured to transmit the Sounding NDP ( 203 ) to the one or more associated non-AP stations ( 120 ) punctured in accordance with the disabled channel indication and in accordance with one or more feedback bitmaps ( 503 c ) for the one or more associated non-AP stations ( 120 ) in the NDPA frame ( 201 ).
6 . The AP ( 110 ) of claim 2 , wherein the processing circuitry ( 111 ) is configured to set the feedback bitmap in the NDPA frame ( 201 ) based on the disabled channel indication.
7 . The AP ( 110 ) of claim 1 , wherein the Sounding NDP ( 203 ) has a bandwidth of 160 MHz or smaller and wherein the indication ( 503 a,b ) for the resolution and/or the range of the feedback bitmap ( 503 c ) is indicative of every bit of the feedback bitmap ( 503 c ) representing a 20 MHz subchannel of the Sounding NDP ( 203 ).
8 . The AP ( 110 ) of claim 1 , wherein the Sounding NDP ( 203 ) has a bandwidth of greater than 160 MHz with a primary 160 MHz channel and a secondary 160 MHz channel and wherein the indication ( 503 a,b ) for the resolution and/or the range of the feedback bitmap ( 503 c ) is indicative of every bit of the feedback bitmap ( 503 c ) representing a 20 MHz subchannel of the primary 160 MHz channel.
9 . The AP ( 110 ) of claim 1 , wherein the Sounding NDP ( 203 ) has a bandwidth of greater than 160 MHz with a primary 160 MHz channel and a secondary 160 MHz channel and wherein the indication ( 503 a,b ) for the resolution and/or the range of the feedback bitmap ( 503 c ) is indicative of every bit of the feedback bitmap ( 503 c ) representing a 20 MHz subchannel of the secondary 160 MHz channel.
10 . The AP ( 110 ) of claim 1 , wherein the Sounding NDP ( 203 ) has a bandwidth of greater than 160 MHz and wherein the indication ( 503 a,b ) for the resolution and/or the range of the feedback bitmap ( 503 c ) is indicative of every bit of the feedback bitmap ( 503 c ) representing a 40 MHz subchannel of the Sounding NDP ( 203 ).
11 . The AP ( 10 ) of claim 1 , wherein the Sounding NDP ( 203 ) has a bandwidth of greater than 160 MHz with a primary 160 MHz channel and a secondary 160 MHz channel and wherein the indication ( 503 a,b ) for the resolution and/or the range of the feedback bitmap ( 503 c ) is indicative of every bit of the feedback bitmap ( 503 c ) representing a 20 MHz subchannel of the primary 160 MHz channel and a further feedback bitmap representing a 20 MHz subchannel of the secondary 160 MHz channel.
12 . The AP ( 110 ) of claim 1 , wherein the communication interface ( 113 ) is configured to receive from each of the one or more associated non-AP stations ( 120 ) that were included in the preceding NDPA frame ( 201 ) a compressed beamforming feedback report, (CBFR) frame, wherein the CBFR frame comprises a MIMO control field ( 600 ) with a partial BW info subfield ( 617 ), wherein the partial BW info subfield ( 617 ) of the MIMO control field ( 600 ) comprises a response feedback bitmap and an indication ( 623 ) of a resolution and/or a range of the response feedback bitmap with a 20 MHz or 40 MHz subchannel resolution for the Sounding NDP with a bandwidth of up to 320 MHz.
13 . A method ( 1400 ) of performing a sounding procedure between an access point (AP) ( 110 ), and one or more associated non-AP stations ( 120 ) in a wireless local area network ( 100 ), wherein the method ( 1400 ) comprises:
generating ( 1401 ) a Null Data PPDU announcement (NDPA) frame ( 201 ) by the AP ( 110 ), wherein the NDPA frame ( 201 ) comprises for each of the one or more associated non-AP stations ( 120 ) a station info field ( 500 ), wherein the station info field ( 500 ) comprises a partial BW info subfield ( 503 ), including a feedback bitmap ( 503 c ) and an indication ( 503 a,b ) of a resolution and/or a range of the feedback bitmap ( 503 c ) with a 20 MHz or 40 MHz subchannel resolution for a Sounding NDP ( 203 ) with a bandwidth of up to 320 MHz; and
transmitting ( 1403 ) the NDPA frame ( 201 ) to the one or more associated non-AP stations ( 120 ).
14 . The method ( 1400 ) of claim 13 , wherein the NDPA frame ( 201 ) further comprises a disabled channel indication, wherein the disabled channel indication is indicative of one or more respective 20 MHz subchannels to be excluded in any further frames exchanged between the AP ( 110 ) and the one or more non-AP stations ( 120 ) associated with the AP ( 110 ).
15 . The method ( 1400 ) of claim 13 , wherein the method ( 1400 ) further comprises transmitting a beacon frame to the one or more associated non-AP stations ( 120 ), wherein the beacon frame comprises a disabled channel indication, wherein the disabled channel indication is indicative of one or more respective 20 MHz subchannels to be excluded in any further frames exchanged between the AP ( 110 ) and the one or more non-AP stations ( 120 ) associated with the AP ( 110 ).
16 . The method ( 1400 ) of claim 14 , wherein the method ( 1400 ) further comprises transmitting the Sounding NDP ( 203 ) to the one or more associated non-AP stations ( 120 ) punctured in accordance with the disabled channel indication and optionally punctured in accordance with the one or more feedback bitmaps ( 503 c ) for the one or more associated non-AP stations ( 120 ) in the NDPA frame ( 201 ).
17 . The method ( 1400 ) of claim 16 , wherein the method ( 1400 ) further comprises receiving from each of the one or more associated non-AP stations ( 120 ) that were included in the preceding NDPA frame ( 201 ) a compressed beamforming feedback report, (CBFR) frame, wherein the CBFR frame comprises a MIMO control field ( 600 ), wherein the MIMO control field ( 600 ) comprises a partial BW info subfield ( 617 ), including a response feedback bitmap, and an indication ( 623 ) of a resolution and/or a range of the response feedback bitmap with a 20 MHz or 40 MHz subchannel resolution for the Sounding NDP ( 203 ) with a bandwidth of up to 320 MHz and an indication for the presence of the further feedback bitmap.
18 . A non-transitory computer-readable storage medium, wherein the non-transitory computer-readable storage medium stores program code which causes a computer or a processor to perform operations comprising:
generating a Null Data PPDU announcement (NDPA) frame ( 201 ), wherein the NDPA frame ( 201 ) comprises for each of the one or more associated non-AP stations ( 120 ) a station info field ( 500 ), wherein the station info field ( 500 ) comprises a partial BW info subfield ( 503 ), including a feedback bitmap ( 503 c ) and an indication ( 503 a,b ) of a resolution and/or a range of the feedback bitmap ( 503 c ) with a 20 MHz or 40 MHz subchannel resolution for a Sounding NDP ( 203 ) with a bandwidth of up to 320 MHz; and
transmitting the NDPA frame ( 201 ) to the one or more associated non-AP stations ( 120 ).
19 . The non-transitory computer-readable storage medium of claim 18 , wherein the NDPA frame ( 201 ) further comprises a disabled channel indication, wherein the disabled channel indication is indicative of one or more respective 20 MHz subchannels to be excluded in any further frames exchanged between an AP ( 110 ) and the one or more non-AP stations ( 120 ) associated with the AP ( 110 ).
20 . The non-transitory computer-readable storage medium of claim 18 , wherein the non-transitory computer-readable storage medium stores program code which causes a computer or a processor to perform further operation comprising:
transmitting a beacon frame to the one or more associated non-AP stations ( 120 ), wherein the beacon frame comprises a disabled channel indication, wherein the disabled channel indication is indicative of one or more respective 20 MHz subchannels to be excluded in any further frames exchanged between an AP ( 110 ) and the one or more non-AP stations ( 120 ) associated with the AP ( 110 ).