Configuring a preamble for trigger-based protocol data unit
Techniques for trigger-based transmission in a wireless network include receiving, at a first wireless device, 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, by the first wireless device, 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, and transmitting, by the first wireless device and to the second wireless device, the TB PPDU transmission using the second value for the parameter.
1 . 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:
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.
2 . The first wireless device of claim 1 , wherein the parameter comprises one of a resource unit (RU), a modulation coding scheme (MCS), a number of space time streams (NSTS), a coding type, or a dual sub-carrier modulation (DCM).
3 . The first wireless device of claim 1 , wherein the first value represents an allocated resource unit (RU) size for the first wireless device, and wherein the second value represents a responding RU size selected by the first wireless device that is less than the allocated RU size.
4 . The first wireless device of claim 3 , the 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:
selecting a multiple resource unit combination to produce the second value representing the responding RU size.
5 . The first wireless device of claim 1 , wherein the indication of the second value for the parameter is signaled in a universal signal (U-SIG) field of the preamble of the TB PPDU transmission.
6 . The first wireless device of claim 1 , the 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:
determining, based on the trigger signal, that the first wireless device is the only device scheduled for TB PPDU transmission to the second wireless device in a particular channel; and
in response to the determination, selecting the second value for the parameter of the TB PPDU transmission.
7 . 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.
8 . The processor for the first wireless device of claim 7 , wherein the parameter comprises one of a resource unit (RU), a modulation coding scheme (MCS), a number of space time streams (NSTS), a coding type, or a dual sub-carrier modulation (DCM).
9 . The processor for the first wireless device of claim 7 , wherein the first value represents an allocated resource unit (RU) size for the first wireless device, and wherein the second value represents a responding RU size selected by the first wireless device that is less than the allocated RU size.
10 . The processor for the first wireless device of claim 9 , wherein the circuitry is configured to execute one or more instructions which, when executed, cause the processor to perform operations comprising:
selecting a multiple resource unit combination to produce the second value representing the responding RU size.
11 . The processor for the first wireless device of claim 7 , wherein the indication of the second value for the parameter is signaled in a universal signal (U-SIG) field of the preamble of the TB PPDU transmission.
12 . 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.
13 . The first wireless device of claim 12 , wherein the parameter comprises one of a resource unit (RU), a modulation coding scheme (MCS), a number of space time streams (NSTS), a coding type, or a dual sub-carrier modulation (DCM).
14 . The first wireless device of claim 12 , wherein the first value represents an allocated resource unit (RU) size for the second wireless device, and wherein the second value represents a responding RU size selected by the second wireless device that is less than the allocated RU size.
15 . The first wireless device of claim 14 , wherein the second wireless device is configured to select a multiple resource unit combination to produce the second value representing the responding RU size.
16 . The first wireless device of claim 12 , wherein the indication for the second value for the parameter is signaled in a universal signal (U-SIG) field of the preamble of the TB PPDU transmission.
17 . The first wireless device of claim 12 , wherein the trigger signal includes an indication of whether the second wireless device is allowed to reconfigure the first value for the parameter of the TB PPDU transmission.