Integrated Access Backhaul Node Selection via Load Status Indicators

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Solution Overview

Problem

In wireless communication systems, especially in 5G networks, the selection of integrated access and backhaul nodes is challenging due to factors like traffic variations and obstacles, leading to congestion and performance degradation in multi-hop relaying scenarios.

Innovation Solution

A method is introduced where integrated access and backhaul nodes report load information based on configured trigger conditions, allowing for the selection of target nodes for handover or re-establishment procedures, using load status indicators and measurement results such as hop count to optimize node selection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If relay nodes are deployed to enhance coverage area, then mobile device throughput is improved, but network load and congestion increase

Engineering Contradiction:
Improvemobile device throughputVSAvoidnetwork load
Core Design Contradiction:
ProductivityVSQuantity of substance

Solution Approach 1:

The patent implements dynamic load status indicators that are updated based on current network conditions, allowing relay nodes to adaptively report their load status to donor nodes. This enables the network to dynamically balance traffic distribution, improving throughput in coverage holes while preventing congestion by redirecting traffic away from overloaded nodes.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent establishes a feedback mechanism where relay nodes report load information to donor nodes based on configured trigger conditions. The donor node uses this feedback to make informed decisions about traffic routing and relay node selection, thereby optimizing network performance and preventing congestion while maintaining enhanced coverage benefits.

Inventive Principle:
Principle #23Feedback

2Area of stationary object

If multi-hop relaying is used to extend coverage, then coverage area is enhanced, but connection reliability deteriorates

Engineering Contradiction:
Improvecoverage areaVSAvoidconnection reliability
Core Design Contradiction:
Area of stationary objectVSReliability

Solution Approach 1:

The patent configures trigger conditions in advance that determine when load information reporting should occur. This preliminary setup allows the network to proactively identify and respond to potential connection issues before they degrade reliability, while maintaining the extended coverage benefits of multi-hop relaying.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The feedback mechanism enables continuous monitoring of load conditions across multi-hop relay paths. When trigger conditions are met, load information is reported back to donor nodes, allowing them to select more reliable paths and maintain connection quality even as coverage area is extended through multiple relay hops.

Inventive Principle:
Principle #23Feedback

3Productivity

If frequent load information reporting is implemented to optimize node selection, then network performance is improved, but signaling load increases

Engineering Contradiction:
Improvenetwork performanceVSAvoidsignaling load
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The patent implements selective reporting based on configured trigger conditions rather than continuous reporting. This partial action approach reports load information only when necessary (when triggers are met), optimizing node selection and network performance while avoiding the excessive signaling load that would result from frequent or continuous reporting.

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS11792681B2Method and apparatus for integrated access and backhaul node selection
Publication Date: 2023.10.17 LENOVO (BEIJING) LTD
  • US11792681B2 patent drawing
  • US11792681B2 patent drawing
  • US11792681B2 patent drawing

AI summary

The present disclosure relates to methods and apparatuses. According to some embodiments of the disclosure, a method includes: receiving information for configuring a trigger condition that an integrated access and backhaul node reports load information of at least one integrated access and backhaul node; and reporting the load information of the at least one integrated access and backhaul node in the case that the trigger condition is met, wherein the load information includes a load status indicator of the integrated access and backhaul node.