CPC H04W 28/14 (2013.01) [H04W 84/12 (2013.01)] | 5 Claims |
1. A method in a wireless local area network system, the method comprising:
receiving, by a station (STA) from an access point (AP), a physical protocol data unit (PPDU) including a legacy signal (L-SIG) field, a repeated legacy signal (RL-SIG) field which is contiguous to the L-SIG field and is a repeat of the L-SIG field, and a universal (U-SIG) field which is contiguous to the L-SIG,
wherein the L-SIG field includes a length field which is set to a value satisfying a condition that a remainder is zero when the length field is divided by three,
wherein the U-SIG field includes version independent bits and version dependent bits being contiguous to the version independent bits,
wherein the U-SIG field has a length of 2 symbols,
wherein the version independent bits include a first subfield related to a physical version of the PPDU, a second subfield related to a duration of transmission opportunity (TXOP) for the PPDU, and a third subfield related to Basic Service Set (BSS) color ID for the PPDU,
wherein the PPDU further includes a Medium Access Control (MAC) header related to a low latency (LL) traffic,
wherein the MAC header includes first information related to a traffic identifier (TID) of the LL traffic and second information related to an activation condition to activate a queue of the LL traffic in the STA; and
based on the PPDU, transmitting, by the STA, a signal carrying the LL traffic.
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