Configuring a preamble for trigger-based protocol data unit

A processor for a first wireless device, the processor comprising:

• circuitry to execute one or more instructions which, when executed, cause the processor to perform operations comprising:
• receiving a trigger signal including an indication of a first value for a parameter of a trigger-based physical layer protocol data unit (TB PPDU) transmission to a second wireless device;
• selecting a second value for the parameter of the TB PPDU transmission, wherein the second value for the parameter is different from the first value for the parameter indicated by the trigger signal;
• and
• causing transmission of the TB PPDU transmission to the second wireless device using the second value for the parameter, wherein an indication of the second value for the parameter is included in a preamble of the TB PPDU transmission.

A first wireless device, comprising:

• one or more processors;
• and
• a non-transitory computer-readable storage medium storing instructions which, when executed by the one or more processors, cause the one or more processors to perform operations comprising:
• causing transmission of a trigger signal to a second wireless device, the trigger signal including an indication of a first value for a parameter of a trigger-based physical layer protocol data unit (TB PPDU) transmission by the second wireless device;
• and
• receiving, from the second wireless device, the TB PPDU transmission using a second value for the parameter that is different from the first value for the parameter indicated by the trigger signal, wherein the second value for the parameter is selected by the second wireless device, and wherein an indication of the second value for the parameter is included in a preamble of the TB PPDU transmission.