Signaling and decoding of punctured subbands in trigger-based PPDU
In some aspects, the disclosure is directed to methods and systems for signaling and decoding of punctured sub-bands in a trigger-based PPDU. In one aspect, at least one of the communication interface or the processing circuitry of a wireless communication device is configured to generate a trigger frame that includes signaling indicating that at least one other wireless communication device is allowed to reduce a bandwidth of an allocated resource unit (RU) for transmitting data via a communication channel; transmit, via the communication channel, the trigger frame to at least one other wireless communication device; receive, via the communication channel and from the at least one other wireless communication device, an uplink (UL) orthogonal frequency division multiple access (OFDMA) frame including the data; and process the UL OFDMA frame including the data based on the signaling.
1 . A device comprising:
a communication interface; and
processing circuitry that is coupled to the communication interface, wherein at least one of the communication interface or the processing circuitry is configured to:
generate a trigger frame comprising a field having a value indicating a resolution with which at least one other device is allowed to reduce a bandwidth of an allocated resource unit (RU) for transmitting data via a communication channel; and
transmit, via the communication channel, the trigger frame to the at least one other device;
receive, via the communication channel and from the at least one other device, an uplink (UL) orthogonal frequency division multiple access (OFDMA) frame including the data and a second value by which the bandwidth is reduced, the OFDMA frame transmitted in a second bandwidth of the RU less than or equal to a first bandwidth according to the value; and
process the UL OFDMA frame including the data.
2 . The device of claim 1 , wherein the at least one other device reduces the bandwidth according to the value in the field responsive to determining that an amount of the bandwidth of the allocated RU includes interference greater than a predetermined threshold.
3 . The device of claim 1 , wherein the trigger frame indicates one or more sub-band locations in which the bandwidth is allowed to be reduced.
4 . The device of claim 1 , wherein the trigger frame comprises a third value that indicates a target received signal strength indicator (RSSI) based on the resolution.
5 . The device of claim 1 , wherein the device is an access point (AP) and the at least one other communication device is a station (STA).
6 . A device comprising:
a communication interface; and
processing circuitry that is coupled to the communication interface, wherein at least one of the communication interface or the processing circuitry is configured to:
generate a trigger frame comprising a field having a single bit value indicating a resolution with which at least one other device is allowed to reduce a bandwidth of an allocated resource unit (RU) for transmitting data via a communication channel; and
transmit, via the communication channel, the trigger frame to the at least one other device,
wherein the at least one other device is configured to transmit a second frame according to the value in the field indicating the resolution with which the at least one other device is allowed to reduce the bandwidth.
7 . A device, comprising:
a communication interface; and
processing circuitry that is coupled to the communication interface, wherein at least one of the communication interface or the processing circuitry is configured to:
generate, in response to a trigger frame from a second device allocating a resource unit (RU) having a first bandwidth, an uplink (UL) orthogonal frequency division multiple access (OFDMA) frame including data, the trigger frame comprising a field having a value indicating a resolution with which at least one other device is allowed to reduce a bandwidth of the allocated RU for transmitting the data via a communication channel; and
transmit, based on the value indicating the resolution with which at least one other device is allowed to reduce the bandwidth of the allocated RU for transmitting the data via the communication channel, the UL OFDMA frame in a second bandwidth of the RU,
wherein the second bandwidth is less than the first bandwidth by the value.
8 . The device of claim 7 , wherein the at least one of the communication interface or the processing circuitry is further configured to:
determine whether a third bandwidth of the allocated RU includes interference greater than a predetermined threshold.
9 . The device of claim 8 , wherein at least one of the communication interface or the processing circuitry is further configured to transmit the UL OFDMA frame in the second bandwidth based on determining that an amount of the first bandwidth of the allocated RU includes the interference greater than the predetermined threshold.
10 . The device of claim 7 , wherein the UL OFDMA frame indicates a different packet extension identifier than a packet extension identifier indicated in the trigger frame.
11 . The device of claim 7 , wherein the UL OFDMA frame indicates a different pre-forward error correcting (FEC) padding factor than an FEC padding factor indicated in the trigger frame.
12 . The device of claim 7 , wherein the device is a station (STA) and the second device is an access point (AP).
13 . The device of claim 7 , wherein the UL OFDMA frame or another UL OFDMA frame is transmitted with one or more of (a) a different modulation and coding scheme (MCS) than an MCS indicated in the trigger frame, or (b) a different number of spatial streams (NSS) than an NSS indicated in the trigger frame.
14 . A circuitry comprising:
a communication interface; and
a processor that is coupled to the communication interface, wherein at least one of the communication interface or the processing circuitry is configured to:
generate a trigger frame comprising a field having a value indicating a resolution with which at least one other device is allowed to reduce a bandwidth of an allocated resource unit (RU) for transmitting data via a communication channel; and
transmit, via the communication channel, the trigger frame to the at least one other device;
receive, via the communication channel and from the at least one other device, an uplink (UL) orthogonal frequency division multiple access (OFDMA) frame including the data and a second value by which the bandwidth is reduced, the OFDMA frame transmitted in a second bandwidth of the RU less than or equal to a first bandwidth according to the value; and
process the UL OFDMA frame including the data.
15 . The circuitry of claim 14 , wherein the trigger frame indicates one or more sub-band locations in which the bandwidth is allowed to be reduced.