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

The HPRB mechanism addresses high collision probabilities in high-priority traffic by using a dedicated backoff procedure with request-response frames, enabling efficient channel contention and rapid collision convergence.

TW202633003APending Publication Date: 2026-08-01MEDIATEK INC
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Patent Information

Application Number
TW115101998
Authority / Receiving Office
TW · TW
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-12-24
Filing Date
2026-01-19
Publication Date
2026-08-01

AI Technical Summary

Technical Problem

The IEEE 802.11 standard's Enhanced Distributed Channel Access (EDCA) mechanism leads to high collision probabilities and increased retries for high-priority traffic due to large contention windows, resulting in inefficiencies and uncertainty in collision convergence.

Method used

A High-Priority Request-Response Backoff (HPRB) mechanism is introduced, which includes a first backoff procedure using a random number within a dedicated contention window for high-priority traffic, followed by a request-response frame exchange to determine channel availability, switching to a conventional backoff procedure if necessary, ensuring efficient channel contention.

Benefits of technology

The HPRB mechanism allows wireless communication devices to contend for channels faster and more efficiently, reducing collisions and achieving quick convergence without unnecessary retries.

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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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