IAB Parent Node Resource Availability Indicators

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Solution Overview

Problem

In integrated access and backhaul (IAB) wireless communication networks, there is a lack of efficient resource management, leading to situations where child nodes are unaware of resource availability to their parent nodes, resulting in potential interference, unnecessary power consumption, and inefficient resource utilization due to uncoordinated communication attempts.

Innovation Solution

A method where parent nodes determine unavailable resources and provide an availability indicator to child nodes, allowing them to modify scheduled communications and utilize resources more effectively, reducing interference and conserving power.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If child nodes attempt communication without knowing parent node resource availability, then communication attempts are made, but interference increases and power is wasted

Engineering Contradiction:
Improvecommunication coordinationVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The patent implements a feedback mechanism where the parent node provides resource availability information to the child node through availability indicators. This allows the child node to adjust its communication behavior based on real-time resource status, avoiding unnecessary transmission attempts and reducing power consumption while maintaining communication reliability.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The parent node determines resource availability in advance before communication occurs and communicates this information to the child node. This preliminary action enables the child node to prepare appropriate transmission strategies, avoiding wasted power from unsuccessful communication attempts.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If parent node does not indicate resource availability, then child node cannot optimize scheduling, but resource utilization efficiency decreases

Engineering Contradiction:
Improveresource utilization efficiencyVSAvoidresource management complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The availability indicator acts as an intermediary mechanism that conveys resource availability information from the parent node to the child node. This simple intermediary structure enables efficient resource utilization without requiring complex resource management protocols or additional signaling overhead.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Object-generated harmful factors

If child node uses resources without knowing parent node unavailability, then communication proceeds, but interference with parent node increases

Engineering Contradiction:
ImproveinterferenceVSAvoidresource availability information
Core Design Contradiction:
Object-generated harmful factorsVSLoss of information

Solution Approach 1:

The parent node provides feedback information about its resource availability status to the child node. This feedback loop enables the child node to adjust its transmission timing and power levels, reducing interference with the parent node while maintaining effective communication.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11589346B2Management of resources in integrated access and backhaul
Publication Date: 2023.02.21 QUALCOMM INC
  • US11589346B2 patent drawing
  • US11589346B2 patent drawing
  • US11589346B2 patent drawing

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a parent node may determine that a set of resources is not available for the parent node for communication with a child node of the parent node. The parent node may provide an availability indicator to the child node based at least in part on determining that the set of resources is not available for the parent node for communication with the child node. The availability indicator may indicate the set of resources as available for the child node. Numerous other aspects are provided.