IAB Node Soft Resource Configuration with Multiple Parent Nodes

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Solution Overview

Problem

In integrated access and backhaul (IAB) networks, child nodes associated with multiple parent nodes face ambiguity in configuring and releasing soft resources, leading to inefficiencies in network resource allocation and management.

Innovation Solution

The proposed solution involves receiving association information indicating parent nodes associated with soft resources, determining release indications from these nodes, and scheduling resource usage based on these indications, ensuring that resources are released only when all parent nodes have provided release indications, thereby reducing ambiguity and improving network efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If child nodes in IAB networks are allowed to associate with multiple parent nodes for resource configuration, then network flexibility and resource allocation capability are improved, but ambiguity in resource release control and scheduling coordination worsens

Engineering Contradiction:
Improvenetwork flexibilityVSAvoidresource release control ambiguity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent introduces an intermediary mechanism where the child node acts as a mediator between multiple parent nodes for resource release control. The child node receives release indications from parent nodes and independently determines whether to release soft resources based on pre-configured association information, eliminating the need for parent nodes to coordinate directly and resolving the control ambiguity.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent applies preliminary action by pre-configuring association information between soft resources and parent nodes before resource allocation occurs. This pre-configuration includes establishing rules for how many parent node release indications are required to trigger resource release, allowing the child node to autonomously make release decisions without real-time coordination delays or ambiguity.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If soft resources are released only when all parent nodes provide release indications, then resource allocation accuracy and network coordination are improved, but resource utilization efficiency and scheduling flexibility worsen

Engineering Contradiction:
Improveresource allocation accuracyVSAvoidresource utilization efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent implements partial action by requiring only a subset of parent node release indications (N out of M) rather than all parent nodes to agree before resource release. This configurable threshold approach allows the system to balance between allocation accuracy and utilization efficiency, releasing resources when sufficient parent nodes indicate release readiness without waiting for complete consensus.

Inventive Principle:
Principle #16Partial or excessive action

Solution Approach 2:

The patent introduces dynamics by making the release threshold configurable and adaptable. The association information can be dynamically adjusted to change how many parent node indications are required for resource release, allowing the system to optimize performance based on varying network conditions, traffic patterns, and service requirements.

Inventive Principle:
Principle #15Dynamics

3Speed

If child nodes autonomously determine resource release based on association information, then scheduling speed and network response time are improved, but control precision and coordination reliability worsen

Engineering Contradiction:
Improvescheduling speedVSAvoidcontrol precision
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The patent implements feedback mechanisms where child nodes continuously monitor and evaluate release indications from parent nodes against pre-configured association rules. This feedback loop allows autonomous decision-making while maintaining control precision, as the child node's autonomous actions are constrained and guided by the feedback from parent nodes and the predetermined association information.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent applies self-service by enabling child nodes to autonomously manage their own soft resource allocation and release decisions based on association information and parent node indications. This self-service capability improves scheduling speed by eliminating centralized coordination overhead while maintaining reliability through structured decision rules and configurable thresholds that ensure controlled autonomy.

Inventive Principle:
Principle #25Self-service

Data Source

PatentUS11277830B2Configuration of soft time resources for an IAB node with multiple parent nodes
Publication Date: 2022.03.15 QUALCOMM INC
  • US11277830B2 patent drawing
  • US11277830B2 patent drawing
  • US11277830B2 patent drawing

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless node may receive association information for a set of soft resources of the wireless node. The association information may indicate one or more parent nodes associated with a soft resource of the set of soft resources. The set of soft resources may be configurable as schedulable or non-schedulable for the wireless node. The wireless node may determine one or more release indications associated with the soft resource. The wireless node may schedule on the soft resource based at least in part on determining the one or more release indications. Numerous other aspects are provided.