Special user information field for trigger frame

A wireless communication device comprising:

• at least one memory;
• at least one processor communicatively coupled with the at least one memory, the at least one processor operable to cause the wireless communication device to:
• receive a trigger frame soliciting a physical layer convergence protocol (PLCP) protocol data unit (PPDU) to be transmitted by the wireless communication device, the trigger frame including a common information field and one or more user information fields that follow the common information field, the one or more user information fields including a first user information field that carries information to be included in a physical layer (PHY) preamble of the PPDU based on an association identifier (AID) value associated with the first user information field, wherein the AID value is unassigned to any wireless communication devices associated with a same basic service set (BSS) as the wireless communication device;
• and
• transmit the PPDU including the PHY preamble, over a wireless channel, responsive to the receiving of the trigger frame.

A wireless communication device comprising:

• at least one memory;
• at least one processor communicatively coupled with the at least one memory, the at least one processor operable to cause the wireless communication device to:
• transmit a trigger frame soliciting a physical layer convergence protocol (PLCP) protocol data unit (PPDU) to be transmitted, over a wireless channel, by a receiving device, the trigger frame including a common information field and one or more user information fields that follow the common information field, the one or more user information fields including a first user information field that carries information to be included in a physical layer (PHY) preamble of the PPDU based on an association identifier (AID) value associated with the first user information field, wherein the AID value is unassigned to any wireless communication devices associated with a same basic service set (BSS) as the wireless communication device;
• and
• receive the PPDU including the PHY preamble, over the wireless channel, responsive to the transmitting of the trigger frame.