Trigger Frame AID Signaling for Multi-Version Wi‑Fi Uplink
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Solution Overview
Problem
Existing communication standards, such as IEEE 802.11be (EHT), face challenges in reducing the reception processing amount in terminals due to inefficiencies in the format of control signals indicating uplink transmission, particularly in handling terminals with different versions like HE, EHT, and EHT+.
Innovation Solution
A communication apparatus and method that configures a specific Association ID (AID) subfield in a trigger frame to indicate uplink transmission, using a format that distinguishes between different terminal versions, thereby reducing reception processing by interpreting the AID differently based on the terminal's version, and optimizing the User Info field for each type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a unified trigger frame format is used for all terminal versions (HE, EHT, EHT+), then device compatibility is maintained, but reception processing amount in terminals increases
Solution Approach 1:
The patent applies local quality by making the trigger frame format adaptable to different terminal types. Specifically, the AID12 subfield is configured with different values for different terminal versions (HE, EHT, EHT+), allowing each terminal type to receive only the necessary information relevant to its version. This reduces the reception processing amount for each terminal while maintaining overall system compatibility.
2Device complexity
If version-specific trigger frame formats are used for different terminal versions, then reception processing amount is reduced, but device compatibility and interoperability worsen
Solution Approach 1:
The patent implements universality by designing a single trigger frame structure that can serve multiple terminal versions (HE, EHT, EHT+) simultaneously. The AID12 subfield acts as a universal indicator that different terminals interpret according to their version. This allows one trigger frame format to fulfill multiple functions across different terminal types, reducing the need for separate formats while maintaining compatibility.
3Productivity
If detailed user information fields are included for all terminal versions, then transmission capability is improved, but trigger frame overhead increases
Solution Approach 1:
The patent applies the extraction principle by removing unnecessary user information fields from the trigger frame based on terminal version. By using the AID12 subfield to indicate the terminal type, the system extracts and includes only the relevant information fields needed for that specific terminal version. This reduces trigger frame overhead while maintaining the necessary transmission capability for each terminal type.
Data Source
AI summary
A communication device (100) comprises: a circuit (11) that sets a first value to an association ID (AID) 12 subfield of the first field of a trigger frame requesting an extremely high throughput (EHT) trigger-based (TB) physical layer protocol data unit (PPDU); and a transmitter (12) that transmits the trigger frame. The first value indicates that the first field contains information to be shared for the transmission of the EHT TB PPDU.