A-PPDU Packet Extension Alignment for Mixed HE and EHT WLAN
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Solution Overview
Problem
Conventional WLAN systems face challenges in aligning the end points of PPDUs for devices supporting different processing times, such as HE and EHT devices, leading to inefficient use of network resources and communication quality issues.
Innovation Solution
An optimized packet extension mechanism that flexibly configures padding bits and PE fields in PPDUs based on the processing requirements of HE and EHT devices, ensuring that PE fields have the same length and are aligned, thereby providing sufficient processing duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a package is extended along its length to increase capacity, then the volume of the package increases, but the stability of the package decreases due to increased flexibility and bending
Solution Approach 1:
The package is divided into multiple rigid segments (first package body portion, second package body portion, end caps) connected by flexible joints. This segmentation allows the package to maintain rigidity in each segment while accommodating overall extension through controlled movement at the joints, thus increasing volume without compromising stability.
Solution Approach 2:
The package incorporates dynamic elements including flexible joints between segments, expandable end caps, and a collapsible handle assembly. These dynamic components allow the package to adapt its shape and volume while maintaining structural integrity, enabling extension without sacrificing stability.
2Stability of the object's composition
If the package structure is made more rigid to improve stability, then the package stability improves, but the ease of operation deteriorates due to reduced flexibility
Solution Approach 1:
The package features dynamic joints and flexible connections that allow easy manipulation and operation while maintaining rigidity during use. The handle assembly can be collapsed and extended, and the end caps can move relative to the body, providing operational flexibility without compromising structural stability.
Solution Approach 2:
The package utilizes flexible joints and thin film connections between rigid segments, allowing easy operation through bending and flexing while maintaining structural stability when in use. The flexible nature of these connections enables user interaction without compromising the overall rigidity of the package body.
3Stability of the object's composition
If the package is designed with fixed dimensions for stability, then the package stability improves, but the adaptability deteriorates due to inability to adjust size
Solution Approach 1:
The package incorporates dynamic expansion and contraction capabilities through movable end caps, flexible joints, and a collapsible handle assembly. These features allow the package to adjust its dimensions and volume while maintaining structural stability, providing adaptability for different storage and transport conditions.
Solution Approach 2:
The segmented design with movable connections between segments allows the package to adapt its overall dimensions while maintaining the stability of each individual segment. The end caps can move relative to the body, and the handle can be collapsed, providing size adjustment without compromising structural integrity.
Data Source
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AI summary
Embodiments of this application relate to a communication method, a communication apparatus, and a computer-readable storage medium. In the provided communication method, a first device generates a first physical layer protocol data unit PPDU and a second PPDU based on first packet extension PE duration and second PE duration that is less than the first PE duration. The first PE duration indicates additional PE duration provided by a predefined PE field required for the first PPDU, and the second PE duration indicates PE duration supported by the second PPDU. The first PPDU includes first padding bits and a target PE field. The second PPDU includes second padding bits and the target PE field. The target PE field corresponds to third PE duration that does not exceed the second PE duration. The first padding bits and the target PE field correspond to duration that is not less than the first PE duration. The first device sends an aggregate physical layer protocol data unit A-PPDU that includes the first PPDU and the second PPDU. In this manner, PE fields in the A-PPDU can provide sufficient additional processing duration for a receiving device while alignment of ends of the PE fields is maintained.