320 MHz Wi-Fi Bandwidth Support Through Per-Channel NAV Sensing
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Solution Overview
Problem
Existing wireless communication systems face challenges in supporting extremely high throughput (EHT) operations due to inadequate flexibility and functionality in channel sensing and reporting mechanisms, particularly when operating at extended bandwidths such as 320 MHz, which can lead to inefficiencies and interference.
Innovation Solution
Implementing enhanced methods and apparatuses that support a 320 MHz operating bandwidth by extending existing rules, structures, and signaling protocols to enable flexible channel sensing and reporting, including modifications to bandwidth query reports (BQR) and target wake time (TWT) elements, allowing for granular operation and concurrent use of multiple channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing channel sensing and reporting mechanisms are used, then device complexity is reduced, but the system cannot support 320 MHz operating bandwidth and EHT operations
Solution Approach 1:
The patent divides the 320 MHz operating bandwidth into multiple channels (e.g., primary channel and secondary channels) and implements per-channel NAV checking. This segmentation allows the system to manage wide bandwidth by treating each channel independently, enabling EHT operations while maintaining manageable complexity through structured channel division.
Solution Approach 2:
The patent embeds extended channel sensing and reporting functionality within existing legacy frame structures and protocols. By nesting new EHT features inside established frameworks, the system achieves 320 MHz bandwidth support without requiring entirely new communication protocols, thus limiting the increase in device complexity.
2Measurement precision
If per-channel NAV checking is implemented, then channel sensing precision is improved, but device complexity increases
Solution Approach 1:
The patent implements per-channel NAV checking by dividing the operating bandwidth into discrete channels, each with its own NAV counter. This segmentation enables precise channel sensing for each individual channel while organizing the complexity through a systematic, channel-by-channel approach that builds on existing NAV mechanisms.
3Productivity
If dynamic channel adjustment is enabled, then bandwidth utilization is optimized, but ease of operation decreases
Solution Approach 1:
The patent enables dynamic channel adjustment by allowing devices to modify their operating channels based on real-time conditions such as interference levels and available bandwidth. The system can dynamically switch between channels and adjust NAV settings to optimize throughput while maintaining automated operation that reduces manual intervention requirements.
Data Source
AI summary
This disclosure provides methods, devices, and techniques to indicate operations by extremely high throughput (EHT) devices on an operating bandwidth, including devices in a basic service set (BSS) supporting the use of a 320 MHz channel. In some aspects, the supported functionality may include extensions to flexibility and support rules, structures, and signaling using legacy fields, frames, and features. In addition, the supported functionality may include channel sensing and reporting, such as per-channel network allocation vectors (NAVs) for the sub-channels of the operating bandwidth. A device may identify an operating mode for an operating bandwidth and determine a value for a bandwidth query report (BQR) or a target wake time (TWT) element. The device may check multiple NAVs for sub-channels of the operating bandwidth. The operating bandwidth may span concurrent operations on traditional Wi-Fi frequency bands including the 2.4 and 5 GHz bands as well as the 6 GHz band.