WLAN MAC Header Extension for Low-Latency Control Fields
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Solution Overview
Problem
Existing WLAN systems face challenges in transmitting and receiving frames with extended control fields, particularly in supporting an extended size within the medium access control (MAC) header, which is essential for advanced wireless communication environments requiring high throughput, low latency, and ultra-high reliability.
Innovation Solution
The method and device enable the transmission and reception of frames with an extended control field by incorporating additional specific control fields within the MAC header, either alongside or at specific positions within the frame, depending on the presence of the high throughput (HT) control field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the MAC header includes an extended control field to support advanced wireless communication features, then the functionality and adaptability of the WLAN system are improved, but the device complexity and processing overhead increase
Solution Approach 1:
The patent implements dynamic control field extension by conditionally adding specific control fields to the MAC header based on the presence of HT control field and the specific processing requirements. The control field structure is not fixed but adapts dynamically to the communication needs, allowing the system to extend functionality only when necessary, thereby managing complexity while maintaining adaptability.
Solution Approach 2:
The control field is segmented into a standard HT control field and optional specific control fields. This segmentation allows the system to maintain a basic control structure while adding specialized control fields only when needed for specific advanced features, reducing overall complexity while preserving adaptability.
2Adaptability or versatility
If additional specific control fields are added to the MAC header to extend control functionality, then the adaptability is improved, but the frame size and processing overhead increase
Solution Approach 1:
The patent employs dynamic control field extension where specific control fields are added to the MAC header only when HT control field is present and when specific processing requirements exist. This dynamic approach ensures adaptability is improved only when necessary, avoiding unnecessary increases in frame size and processing overhead.
Solution Approach 2:
Instead of uniformly extending all control fields in all frames, the patent applies local quality by adding specific control fields only in specific locations (MAC header) and only when specific conditions are met (HT control field presence), thereby improving adaptability locally without globally increasing frame size.
3Adaptability or versatility
If the control field structure is extended to support advanced features, then the adaptability is improved, but the ease of operation and compatibility decrease
Solution Approach 1:
The patent implements dynamic control field extension that maintains ease of operation by only adding specific control fields when HT control field is present. This dynamic approach ensures that basic operations remain simple and compatible while advanced features are supported when needed, balancing adaptability with ease of operation.
Solution Approach 2:
The MAC header control field structure is designed with universal compatibility in mind, using a standardized HT control field that works across different WLAN standards while allowing optional specific control fields to be added for advanced features. This multi-functionality approach maintains ease of operation for basic operations while providing adaptability for advanced features.
Data Source
AI summary
A method and apparatus for transmitting or receiving an extended control field in a wireless LAN system are disclosed. The method performed by a first station (STA) in a wireless LAN system, according to an embodiment of the present disclosure, comprises the steps of: receiving, from a second STA, a frame including a medium access control (MAC) header including one or more specific control fields; and on the basis of the one or more specific control fields, performing processing on one or more fields included in a frame body within the frame, wherein on the basis that a high throughput (HT) control field is present in the MAC header, the one or more specific control fields may be additionally present in the HT control field, and on the basis that the HT control field is not present in the MAC header, the one or more specific control fields may be present at a specific location within the frame.