Coordinated Access Point Update Flags for Selective Frame Parsing

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Solution Overview

Problem

In wireless communication networks, APs communicating according to coordinated access point (CAP) schemes face increased processing and power consumption due to the need to parse frames that may or may not indicate changes in CAP scheme parameters, leading to inefficient resource utilization.

Innovation Solution

Implementing a CAP parameter change count (CAP-PCC) field and a CAP critical update flag (CAP-CUF) field in frames to indicate whether updates to CAP scheme parameters are present, allowing APs to determine if frames need to be parsed, thereby reducing unnecessary processing and power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If APs always parse frames to check for CAP scheme parameter changes, then parameter updates are reliably detected, but processing overhead and power consumption increase

Engineering Contradiction:

Improveparameter update detection reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts the critical update indication from the frame body and places it in a dedicated flag field (CAP-CUF) or a specific bit position in existing fields. This allows receiving APs to check only this specific indicator without parsing the entire frame, thereby reducing processing overhead while maintaining reliable detection of parameter changes.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The frame structure is segmented into critical indicator fields (CAP-CUF, CAP-PCC) and non-critical data fields. The critical indicators are placed in easily accessible positions that can be checked independently of the full frame content, enabling selective parsing based on update presence without processing unnecessary data.

Inventive Principle:

Principle #1Segmentation

2Reliability

If APs always parse frames to check for CAP scheme parameter changes, then parameter updates are reliably detected, but processing overhead increases

Engineering Contradiction:

Improveparameter update detection reliabilityVSAvoidprocessing overhead

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The transmitting AP sets the CAP-CUF flag or increments the CAP-PCC counter before frame transmission to pre-indicate the presence of updates. Receiving APs can make a quick decision based on these pre-indicators whether to perform full frame parsing, avoiding unnecessary processing complexity.

Inventive Principle:

Principle #10Preliminary action

3Use of energy by moving object

If APs selectively parse frames based on indicator fields, then power consumption and processing are reduced, but frame structure complexity increases

Engineering Contradiction:

Improvepower consumptionVSAvoidframe structure

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The patent reuses existing frame fields (such as capability information fields or parameter change count fields) to carry the CAP update indicators. This multi-functional use of existing fields adds minimal structural overhead while enabling selective parsing across different frame types without requiring entirely new frame formats.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The critical update indicator is placed in a specific, localized position within the frame structure (such as a dedicated flag bit or a specific field). This localized placement allows receiving APs to quickly access the indicator without processing the entire frame, minimizing the impact of frame structure complexity on processing efficiency.

Inventive Principle:

Principle #3Local quality

4Productivity

If APs selectively parse frames based on indicator fields, then processing efficiency is improved, but parameter update reliability may be compromised

Engineering Contradiction:

Improveprocessing efficiencyVSAvoidparameter update detection reliability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent employs a parameter change count field (CAP-PCC) that is incremented by the transmitting AP whenever CAP scheme parameters are updated. The receiving AP compares the received CAP-PCC value with its stored value to reliably detect updates. This feedback mechanism ensures that no updates are missed while allowing selective parsing based on the count comparison.

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250274164A1Indicating critical updates for coordinated access point mechanisms

Publication Date: 2025.08.28 QUALCOMM INC

AI summary

This disclosure provides methods, components, devices and systems for indicating critical updates for coordinated access point mechanisms. Various aspects relate generally relate to a field in a frame that may indicate whether the frame comprises updates related to a coordinated access point (CAP) scheme. Various aspects relate more specifically to a CAP parameter change count (CAP-PCC) field or a CAP critical update flag (CAP-CUF) field that may indicate whether a frame comprises updates related to the CAP scheme. In some aspects, the CAP-PCC field, the CAP-CUF field, or both may be communication link-specific or common across one or more communication links between a transmitted access point (AP) using the CAP scheme and one or more wireless stations (STAs). In some aspects, the frame may include (such as via the CAP-PCC field) an indication of an index associated with one or more APs for which the update applies.