Method for transmitting physical layer protocol data unit with high-priority traffic and associated wireless communication device

Abstract

A method for performing communications via a channel by a wireless communication device includes: in response to a physical layer protocol data unit (PPDU) with high-priority traffic being expected to be transmitted, performing a first type of backoff procedure to detect whether the channel is in an idle state and determine whether a first continuous channel idle time is reached; and in response to detecting the channel is in that idle state and determining the first continuous channel idle time is reached, initiating a transmission of a frame exchange sequence; wherein the first continuous channel idle time is a sum of a Point Coordination Function Interframe Space (PIFS) and a product of a first random number and a slot time, and the first random number is set to an integer value chosen from a range of zero to a first contention window dedicated to the high-priority traffic.

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