Dynamic-Bandwidth Packet Format with Orthogonal Detection Fields
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Solution Overview
Problem
Existing wireless communication technologies face challenges in achieving high data throughput due to overhead signaling, particularly in the 6 GHz frequency band where legacy devices are not prevalent, leading to inefficiencies in data transmission.
Innovation Solution
A packet format for data transmission that dynamically varies frequency bandwidth between packets, utilizing a frequency bandwidth detection field with orthogonal field contents to convey bandwidth information without additional overhead, compatible with IEEE802.11ax and IEEE802.11be standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If overhead signaling is increased to convey bandwidth information, then bandwidth indication accuracy is improved, but data throughput is reduced
Solution Approach 1:
The patent merges bandwidth indication information with existing training fields (L-LTF or HE-LTF) by modifying their field contents. Instead of adding separate overhead signaling, the bandwidth information is embedded within the existing training field structure, causing no increase in overhead while enabling accurate bandwidth detection through orthogonal field content design
Solution Approach 2:
The training fields serve dual purposes: maintaining their traditional functions for channel estimation and synchronization while simultaneously conveying bandwidth indication information through their field content design. This multi-functionality eliminates the need for dedicated overhead signaling for bandwidth indication
2Productivity
If frequency bandwidth is dynamically increased between data packets, then data throughput is improved, but device complexity increases
Solution Approach 1:
The patent performs preliminary bandwidth indication by encoding bandwidth information in the training field before the actual data transmission begins. Receivers can detect the bandwidth usage in advance through the training field, allowing them to properly configure their reception parameters before the data packet arrives, thus simplifying the overall system operation
Solution Approach 2:
The training field itself carries the information needed for receivers to automatically determine the bandwidth configuration. This self-contained approach allows receivers to autonomously detect and adapt to the transmitted bandwidth without requiring additional control signaling or complex coordination protocols
Data Source
AI summary
A packet format is disclosed for transmission of data packets over a communication channel, wherein transmission of one of the data packets utilizes a frequency bandwidth, and wherein the frequency bandwidth is dynamically variable between data packets. The packet format defines a frequency bandwidth detection field, wherein the frequency bandwidth detection field of a data packet has a first field content or a second field content, and wherein corresponding parts of the first and second field contents are orthogonal to each other. The first field content is indicative of that transmission of the data packet utilizes a first frequency bandwidth and the second field content is indicative of that transmission of the data packet utilizes a frequency bandwidth which is larger than the first frequency bandwidth. Corresponding methods and apparatuses for transmission/reception of data packets are also disclosed.