PHY Header Puncturing Patterns for Dynamic WLAN Channel Allocation
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Solution Overview
Problem
Existing wireless local area networks face challenges in efficiently utilizing resources due to devices using different communication protocols and hardware bandwidth limitations, leading to suboptimal bandwidth allocation and response times.
Innovation Solution
Implementing methods for indicating subchannel puncturing in the physical header of a PHY protocol data unit (PPDU) to optimize resource allocation and scheduling in wireless networks, including techniques for extending traffic indication maps and defining service periods based on traffic wake times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static puncturing mechanisms are used to ensure compatibility with legacy devices, then reliability of communication is improved, but adaptability to dynamic network conditions deteriorates
Solution Approach 1:
The patent implements dynamic puncturing patterns that can be adjusted in real-time based on network conditions, device capabilities, and traffic requirements. The system transitions from static puncturing configurations to dynamic ones where puncturing patterns are selected and applied adaptively during operation, resolving the contradiction between reliability and adaptability.
Solution Approach 2:
The patent changes the puncturing parameters (patterns, density, distribution) dynamically based on network conditions, device types, and traffic characteristics. By modifying these parameters adaptively rather than using fixed static patterns, the system maintains reliable communication while becoming versatile across different dynamic scenarios.
2Productivity
If resource allocation is optimized for newer protocols, then productivity is improved, but ease of operation with legacy devices deteriorates
Solution Approach 1:
The patent applies different puncturing patterns and resource allocation strategies to different subchannels and device types within the same network. Newer devices receive optimized resource allocation with appropriate puncturing patterns, while legacy devices operate on subchannels or with configurations they can handle, achieving both high productivity and ease of operation.
Solution Approach 2:
The patent segments the available spectrum and resources into different portions that can be allocated differently to newer and legacy devices. By dividing resources and applying selective puncturing patterns to different segments, the system optimizes productivity for modern devices while maintaining compatibility and ease of operation for legacy devices.
3Ease of operation
If puncturing patterns are fixed to ensure compatibility, then ease of operation is improved, but loss of information about optimal resource usage deteriorates
Solution Approach 1:
The patent incorporates feedback mechanisms where the system monitors network conditions, device responses, and communication effectiveness, then uses this information to dynamically select and adjust puncturing patterns. This feedback loop ensures ease of operation through automated adaptation while preventing loss of optimal resource usage information by continuously learning from actual performance data.
Data Source
AI summary
Methods, apparatuses, and computer readable media for indicating channel puncturing in a physical (PHY) header of a PPDU are disclosed. Apparatuses of a non-access point (AP) station (STA) or of an AP are disclosed, where the apparatuses comprise processing circuitry configured to: decode a first portion of a physical (PHY) protocol data unit (PPDU), the first portion of the PPDU comprising a bandwidth subfield and a puncturing pattern subfield, the bandwidth subfield indicating a bandwidth of a transmission channel for the PPDU, and the puncturing pattern subfield indicating whether 20 MHz subchannels within the transmission channel are punctured. The processing circuitry is further configured to decode the second portion of the PPDU in accordance with the transmission channel and the punctured 20 MHz subchannels.