PPDU Early Termination Signaling for Predictable STA Response
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Solution Overview
Problem
Current wireless communication standards do not provide clear guidelines for the behavior of receivers when a Physical Layer Convergence Protocol Data Unit (PPDU) is terminated early, leading to complex design considerations for transmitters as they must prepare for multiple potential receiver responses.
Innovation Solution
Implementing a capability bit in the PPDU header to indicate the receiver's behavior upon early termination, allowing the transmitter to standardize the response by specifying whether the receiver should send a normal or early response, and defining a rule for the timing of the response based on the PPDU's early termination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the transmitter prepares for multiple potential receiver responses to early terminated PPDU, then the system can handle various receiver behaviors, but the transmitter design complexity increases
Solution Approach 1:
Instead of having the transmitter prepare for multiple receiver response scenarios, the invention inverts the approach by having the receiver indicate its intended behavior through a capability bit. This shifts the complexity burden from the transmitter to the receiver, allowing the transmitter to simply follow the receiver's indication without needing to handle multiple response types.
Solution Approach 2:
The capability bit acts as an intermediary mechanism that conveys the receiver's intended response behavior to the transmitter. This single-bit indicator serves as a mediator that resolves the complexity issue by providing clear, unambiguous information about how the receiver will behave, eliminating the need for the transmitter to prepare for multiple scenarios.
2Loss of time
If the receiver sends an early response upon PPDU termination, then the response time is reduced, but the timing synchronization becomes more complex
Solution Approach 1:
The receiver performs preliminary action by indicating its early response capability in advance through the capability bit. This allows the transmitter to know beforehand whether the receiver will send an early response or a normal response, enabling proper timing synchronization without requiring complex real-time detection and adaptation mechanisms.
3Adaptability or versatility
If no standard rule is defined for early PPDU termination, then the system is flexible in handling different scenarios, but the implementation complexity increases
Solution Approach 1:
The invention introduces a parameter change by adding a capability bit to the PHY header. This single-bit parameter efficiently encodes the receiver's response behavior indication, providing a standardized yet flexible mechanism that simplifies implementation while maintaining the ability to handle different early termination scenarios.
Data Source
AI summary
This disclosure describes systems, methods, and devices related to physical layer (PHY) convergence protocol data unit (PPDU) early termination. A device may generate a frame comprising a header portion and one or more fields to carry information associated with one or more station devices (STAs). The device may encode the frame with an indication to at least one of the one or more STAs of a response behavior based on carly termination of the frame. The device may cause to send the frame to the one or more STAs.