Enhanced Trigger Frame Fields for Legacy-Compatible 802.11be Throughput
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Solution Overview
Problem
Existing IEEE 802.11 wireless communication standards lack support for enhanced features such as increased bandwidth and spatial streams, necessitating new trigger frame formats to facilitate efficient communication.
Innovation Solution
The implementation of enhanced trigger frames that include a MAC header, a common information field, and a special user information field with subfields for configuring non-legacy PPDU transmissions, supporting bandwidths up to 320 MHz and 16 spatial streams, while being backwards compatible with legacy STAs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing IEEE 802.11 trigger frame formats are used, then legacy compatibility is maintained, but enhanced features such as increased bandwidth and spatial streams cannot be supported
Solution Approach 1:
The trigger frame is segmented into distinct fields: a common information field containing legacy-compatible parameters, and one or more user information fields containing enhanced feature parameters. This segmentation allows legacy devices to process only the common field while enhanced devices can utilize both fields, thus supporting enhanced features without forcing complexity on all devices.
Solution Approach 2:
The trigger frame format is designed with multi-functionality to serve both legacy and enhanced WLAN communication needs. The common information field provides universal compatibility with existing IEEE 802.11 standards, while optional user information fields extend functionality to support enhanced bandwidth and spatial stream features, making the same frame structure universally applicable across different capability levels.
2Productivity
If a new trigger frame format supporting enhanced features is implemented, then bandwidth and spatial stream capabilities are improved, but compatibility with legacy STAs is lost
Solution Approach 1:
By segmenting the trigger frame into common and user-specific information fields, the patent enables legacy STAs to reliably process the common field for basic operations while enhanced STAs can additionally utilize the user information field for high-throughput operations. This segmentation maintains reliability across different device types while enabling enhanced productivity where supported.
Solution Approach 2:
The frame structure implements partial enhancement where only the necessary portions (user information fields) contain enhanced feature parameters, while the common information field maintains legacy compatibility. This partial action approach allows enhanced functionality to be added without completely redesigning the frame structure, thus preserving legacy compatibility while improving productivity for capable devices.
3Ease of operation
If legacy trigger frame format is used, then device complexity is minimized, but enhanced WLAN communication features cannot be enabled
Solution Approach 1:
The trigger frame is divided into a simple common information field that maintains ease of operation for legacy devices, and optional user information fields that provide adaptability for enhanced features. This segmentation allows the frame to be operated simply by legacy devices while remaining adaptable to support new communication protocols when user information fields are present and processed.
Solution Approach 2:
The common information field serves as a universal base that simplifies operation across all WLAN devices regardless of capability level, while the optional user information fields provide multi-functionality for enhanced features. This universal base approach maintains ease of operation while the optional extensions enable adaptability to new protocols.
Data Source
AI summary
This disclosure provides methods, devices and systems for generating enhanced trigger frames. Some implementations more specifically relate to trigger frame designs that support gains in data throughput achievable in accordance with the IEEE 802.11be amendment, and future generations, of the IEEE 802.11 standard. In some implementations, an enhanced trigger frame may be used to solicit a non-legacy trigger-based (TB) physical layer protocol convergence protocol (PLCP) protocol data unit (PPDU) from one or more wireless stations (STAs). In some implementations, the enhanced trigger frame may be configurable to support multiple versions of the IEEE 802.11 standard. For example, an enhanced trigger frame may be configured in accordance with a legacy trigger frame format or a non-legacy trigger frame format. Thus, when configured in accordance with the legacy trigger frame format, the enhanced trigger frame can also be used to a legacy TB PPDU from one or more STAs.