Multi-Link Setup Inheritance Reducing Signaling Overhead

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Solution Overview

Problem

The IEEE 802.11be amendment does not define inheritance rules for parameters across Per-STA Profile subelements, leading to redundant parameter repetitions in Link Reconfiguration Request/Response frames, which increases frame length and airtime consumption.

Innovation Solution

Implementing inheritance rules across Per-STA Profile subelements, where the first profile contains a complete set of parameters, and subsequent profiles inherit these values unless explicitly overridden or listed in a Non-Inheritance field, thereby reducing redundant parameter repetitions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If complete parameter sets are included in each Per-STA Profile subelement, then all necessary link configuration information is provided, but frame length and signaling overhead increase

Engineering Contradiction:

Improvecompleteness of link configuration informationVSAvoidframe length

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

The patent extracts only the necessary parameters from complete parameter sets in subsequent Per-STA Profile subelements. By comparing parameters against the first profile and including only those that differ or are marked for non-inheritance, the frame length is reduced while maintaining all necessary configuration information through the inheritance mechanism.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The first Per-STA Profile subelement serves as a universal template that subsequent profiles can inherit from. This multi-functional approach allows a single complete parameter set to serve multiple links, eliminating redundant repetitions while ensuring all links receive appropriate configuration.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If complete parameter sets are included in each Per-STA Profile subelement, then all necessary link configuration information is provided, but airtime consumption increases

Engineering Contradiction:

Improvecompleteness of link configuration informationVSAvoidairtime consumption

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

By extracting and including only the necessary differing parameters in subsequent profiles rather than complete parameter sets, the patent reduces the transmission time required for Link Reconfiguration frames, thereby reducing airtime consumption while maintaining configuration completeness through inheritance.

Inventive Principle:

Principle #2Taking out (Extraction)

3Loss of substance

If parameter inheritance is implemented across Per-STA Profile subelements, then redundant parameter repetitions are reduced, but device complexity increases

Engineering Contradiction:

Improveredundant parameter repetitionsVSAvoidinheritance rule implementation complexity

Core Design Contradiction:

Loss of substanceVSDevice complexity

Solution Approach 1:

The patent implements a feedback mechanism where subsequent Per-STA Profile subelements compare their parameters against the first profile and selectively inherit or override values. This structured feedback approach systematically reduces redundancy while managing complexity through clear inheritance rules and Non-Inheritance field markings.

Inventive Principle:

Principle #23Feedback

4Loss of substance

If parameter inheritance is implemented across Per-STA Profile subelements, then signaling overhead is reduced, but processing complexity increases

Engineering Contradiction:

Improvesignaling overheadVSAvoidprocessing complexity

Core Design Contradiction:

Loss of substanceVSDevice complexity

Solution Approach 1:

The inheritance mechanism provides a systematic feedback process where receiving devices can reconstruct complete parameter sets by combining inherited values from the first profile with explicit parameters in subsequent profiles. This reduces signaling overhead while managing processing complexity through organized parameter comparison and inheritance resolution.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS20250081273A1Inheritance based link addition to multi-link setup

Publication Date: 2025.03.06 CISCO TECHNOLOGY INC

AI summary

The present disclosure provides techniques for reducing signaling overhead in multi-link reconfiguration. A first MLD generates a first profile for a first link, where the first profile comprises a plurality of parameter sets, each parameter set being allocated an element identifier and comprising a first value set relevant to an operation of the first link. The first MLD generates a second profile for a second link, where one or more parameter sets that have a same value set as in the first profile are omitted, and, for each parameter set that has a different value set from the first profile, the element identifier and a second value set are incorporated into the second profile. The first MLD generates a link reconfiguration frame including the first and second profiles, and sends the frame to a second MLD.