Conditional Configuration in Wireless Multi-Connectivity Networks

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Solution Overview

Problem

Current conditional configuration approaches in New Radio (NR) systems face challenges in multi-connectivity scenarios, particularly in configuring multiple candidate target cells provided by different network nodes, leading to ambiguity in message forwarding and configuration execution.

Innovation Solution

The solution involves using identifiers associated with candidate target network nodes to ensure proper message forwarding and conditional configuration execution, where a wireless device transmits a message with an identifier to a master network node, which then forwards it to the intended candidate target network node, facilitating conditional Primary Secondary Cell Group (PSCell) changes or additions across multiple network nodes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conditional configuration is used for multiple candidate target cells provided by different network nodes, then robustness against link deterioration is improved, but message forwarding ambiguity occurs

Engineering Contradiction:

Improverobustness against link deteriorationVSAvoidmessage forwarding ambiguity

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The master network node serves as an intermediary between the wireless device and candidate target secondary network nodes. The master node receives conditional configurations from multiple secondary nodes, manages the configuration data, and forwards messages to the appropriate target node based on fulfillment conditions, thereby resolving the forwarding ambiguity while maintaining robustness

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system segments the message forwarding function by introducing node identifiers that distinguish different candidate target network nodes. Each conditional configuration is associated with a specific candidate target secondary network node identifier, allowing the master node to segment and route messages to the correct destination based on the fulfilled condition

Inventive Principle:

Principle #1Segmentation

2Measurement precision

If identifiers are added to messages to enable proper forwarding, then message delivery accuracy is improved, but device complexity increases

Engineering Contradiction:

Improvemessage delivery accuracyVSAvoiddevice complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The wireless device performs partial action by only adding the candidate target secondary network node identifier to messages when conditional configuration is being used. The identifier is selectively included based on whether the message relates to conditional configuration execution, avoiding unnecessary complexity in other messaging scenarios

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS20230300691A1Conditional Configuration in a Wireless Communication Network

Publication Date: 2023.09.21 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

AI summary

Conditional configuration in a wireless communication network is disclosed. A method performed by a wireless device (12) comprises receiving, from a first network node (14), conditional configurations (16-1...16-N) of candidate target cells (18-1...18-N) that are respectively provided by candidate target network nodes (22-1...22-N). The method also comprises transmitting, to the first network node (14), a message (20) and an identifier associated with one of the candidate target network nodes (22-1...22-N) towhich the message (20) is destined.