Dynamic AP Bandwidth Puncturing for Selective Client Interference

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Solution Overview

Problem

Wireless communication networks experience interference among overlapping APs and STAs due to shared bandwidth usage, leading to reduced data throughput and inefficient resource utilization.

Innovation Solution

Implement dynamic puncturing techniques where APs communicate with STAs using full or punctured bandwidths based on interference reports, tailoring frequency resources on a per-peer basis to alleviate interference and maintain throughput for unaffected STAs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If multiple APs communicate within the same bandwidth to maximize resource utilization, then system productivity is improved, but interference increases and reliability deteriorates

Engineering Contradiction:

Improvedata throughputVSAvoidcommunication reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The bandwidth is segmented into multiple sub-bands, allowing different APs to communicate on different frequency segments. This segmentation enables simultaneous communications while avoiding interference by assigning non-overlapping frequency resources to interfering APs.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system dynamically adjusts bandwidth allocation and puncturing patterns based on real-time interference conditions. APs can switch between full bandwidth and punctured bandwidth modes, and the network dynamically reconfigures resource allocation to adapt to changing interference environments.

Inventive Principle:

Principle #15Dynamics

2Productivity

If APs use full bandwidth for communication to maximize data throughput, then productivity is improved, but interference to other STAs increases

Engineering Contradiction:

Improvedata throughputVSAvoidinterference to other STAs

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

Different quality of bandwidth allocation is applied to different spatial locations and user groups. STAs experiencing interference receive punctured bandwidth allocations avoiding interfered sub-bands, while unaffected STAs continue to use full bandwidth, optimizing throughput for each local condition.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The interference information, which is normally harmful, is converted into a useful resource for dynamic puncturing decisions. By utilizing interference reports from STAs, the system can proactively puncture affected sub-bands and redirect communications to clean frequency resources, turning interference data into a benefit for resource allocation.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Reliability

If punctured bandwidth is used to avoid interference to maintain reliability, then reliability is improved, but data throughput decreases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoiddata throughput

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The puncturing mechanism serves multiple functions simultaneously: it protects reliable communication for affected STAs by avoiding interfered sub-bands, while preserving full bandwidth utilization for unaffected STAs. The same frequency resources can be dynamically allocated to different purposes based on real-time needs.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system changes the bandwidth parameter dynamically based on interference conditions. When interference is detected, the bandwidth parameter is adjusted to exclude affected sub-bands for specific STAs. When interference is absent, the full bandwidth parameter is restored to maximize throughput.

Inventive Principle:

Principle #35Parameter changes

4Reliability

If dynamic puncturing is implemented on all STAs to mitigate interference, then reliability is improved, but device complexity increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

STAs autonomously monitor their own interference conditions and generate interference reports based on their local observations. Each STA independently determines which sub-bands are affected and communicates this information to the network, eliminating the need for centralized interference detection and reducing overall system complexity.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS20250317914A1Techniques for dynamic puncturing on selective wireless clients to mitigate interference

Publication Date: 2025.10.09 QUALCOMM INC

AI summary

This disclosure provides methods, components, devices and systems for techniques for dynamic puncturing on selective wireless clients to mitigate interference. Some aspects more specifically relate to techniques that enable access points (APs) to communicate with some stations (STAs) using a “full BW,” and to communicate with other STAs using a “punctured BW.” For example, an AP may communicate with STAs using a “full BW,” and may receive reports from STAs that indicate interference experienced by (or expected to be experienced by) the respective STAs. For STAs that report no interference, the AP may continue communicating with the STAs using the full BW. Comparatively, for STAs that report interference on one or more sub-bands of the full BW, the AP may transmit a report for a “punctured BW” that omits one or more sub-bands of the full BW that are susceptible to the interference.