Bandwidth Signaling Control Wrapper Frame for Wi-Fi
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current IEEE 802.11 wireless networking standards, particularly IEEE 802.11ac, lack efficient bandwidth signaling for non-high throughput duplicate frames, especially for extra-wide bandwidths greater than 160 MHz, and are not compatible with legacy devices.
Innovation Solution
The introduction of a bandwidth signaling control wrapper frame that includes a bandwidth information field, allowing for explicit bandwidth signaling in non-HT duplicate formats, compatible with legacy devices and supporting bandwidths up to 320 MHz or more, by reconfiguring the HT control frame to include bandwidth information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If IEEE 802.11ac standards are used for wireless communication, then communication speed is improved, but bandwidth signaling capability for extra-wide bandwidths greater than 160 MHz deteriorates
Solution Approach 1:
The bandwidth information field is segmented into multiple components including color data (6 bits), transmission opportunity data (7 bits), and preamble puncturing data (4 bits). This segmentation allows efficient encoding of diverse bandwidth-related parameters within the constrained control frame structure, enabling support for extra-wide bandwidths while maintaining compatibility with existing IEEE 802.11ac standards.
Solution Approach 2:
The patent introduces a new dimension to the control frame structure by adding a dedicated bandwidth information field that operates alongside the existing high throughput control field. This dimensional addition enables bandwidth signaling for extra-wide bandwidths without disrupting the existing dual-format control frame architecture, thus maintaining backward compatibility while extending functionality.
2Productivity
If control frames are reconfigured to include bandwidth information for extra-wide bandwidths, then bandwidth signaling efficiency is improved, but compatibility with legacy devices deteriorates
Solution Approach 1:
The control frame structure is designed with multi-functionality to serve both legacy and modern devices. The bandwidth information field can be interpreted by modern devices to extract detailed bandwidth parameters for extra-wide bandwidth operation, while legacy devices simply ignore this field and process the frame using existing protocols. This universal design enables efficient bandwidth signaling without sacrificing legacy compatibility.
Solution Approach 2:
The patent introduces an intermediary bandwidth information field that acts as a bridge between legacy control frame structures and modern bandwidth requirements. This intermediary field contains encoded bandwidth parameters that modern devices can decode for precise bandwidth configuration, while legacy devices treat the entire field as opaque data, thus maintaining compatibility through this intermediary layer.
3Measurement precision
If a bandwidth information field is added to control frames, then explicit bandwidth signaling is improved, but device complexity increases
Solution Approach 1:
The bandwidth information field utilizes parameter changes in the control frame structure by allocating specific bit fields for different bandwidth parameters. The color data (6 bits), transmission opportunity data (7 bits), and preamble puncturing data (4 bits) represent optimized parameter encodings that provide precise bandwidth signaling while maintaining a compact field structure. This parameter optimization achieves high signaling precision without proportionally increasing processing complexity.
Data Source
AI summary
A system for wireless communication includes data processing hardware, and memory hardware in communication with the data processing hardware. The memory hardware stores instructions that when executed on the data processing hardware cause the data processing hardware to perform operations. The operations include generating a control frame including a frame control field. The operations also include transmitting the control frame including indicating data in the frame control field. The indicating data indicates that the control frame includes bandwidth information.