Dynamic Relocation of Mobile Access Nodes in Cellular Networks

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Solution Overview

Problem

Conventional wireless communication networks assume static positions for network nodes, which limits their ability to dynamically adjust for improved positioning accuracy and network coverage.

Innovation Solution

The system and method for relocating network nodes, allowing access nodes to be dynamically moved to optimize positioning accuracy and network coverage, by transmitting relocation requests and receiving success messages between network nodes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If network nodes are assumed to be static, then network simplicity and ease of management are maintained, but positioning accuracy and network coverage flexibility are limited

Engineering Contradiction:
Improvepositioning accuracyVSAvoidnetwork management complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent implements dynamic relocation of access nodes by introducing a relocation capability indicator that identifies which access nodes can be moved. The system dynamically selects and relocates access nodes based on positioning requirements, transforming the static network architecture into a dynamic one that can adapt to changing positioning needs while maintaining manageable complexity through structured selection criteria

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the operational parameter of access nodes from fixed position to movable position by introducing relocation capability indicators and relocation procedures. This parameter change allows the system to switch between static and dynamic operational modes, enabling improved positioning accuracy when needed while maintaining static operation for routine scenarios

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If access nodes are dynamically relocated, then positioning accuracy and network coverage are improved, but network management complexity and signaling overhead increase

Engineering Contradiction:
Improvenetwork coverage flexibilityVSAvoidnetwork management complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies preliminary action by pre-identifying access nodes with relocation capability through capability indicators before relocation is needed. The system maintains a knowledge base of which nodes can be relocated, allowing rapid deployment when positioning improvements are needed without ad-hoc complexity during the actual relocation process

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback mechanisms where access nodes report their relocation capability and status to the network. The system receives feedback on node positions and relocation status, using this information to make informed decisions about which nodes to relocate and when, thereby managing complexity through structured information flow

Inventive Principle:
Principle #23Feedback

3Measurement precision

If all access nodes are made relocatable, then positioning accuracy is maximized, but system complexity and cost increase

Engineering Contradiction:
Improvepositioning accuracyVSAvoidnode complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent applies local quality by assigning relocation capability selectively to specific access nodes rather than uniformly to all nodes. Each access node has a specific relocation capability indicator that identifies whether it can be relocated, allowing the system to concentrate complexity only where needed for positioning improvement while keeping other nodes simple and fixed

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent implements partial action by relocating only the necessary number of access nodes to achieve the required positioning accuracy improvement. Rather than making all nodes relocatable, the system selectively applies relocation to the minimum subset of nodes needed, avoiding unnecessary complexity while achieving the positioning goal

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentUS12317096B2Dynamic relocation of nodes in a cellular network
Publication Date: 2025.05.27 TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
  • US12317096B2 patent drawing
  • US12317096B2 patent drawing
  • US12317096B2 patent drawing

AI summary

Systems and methods for relocating network nodes are provided herein. A network node can determine that relocation of at least one access node in the access network is required. An access node, such an IAB node with mobile capabilities, can be selected to be relocated from a first position to a second position. Relocation messages and parameters can be signaled between the network and the access node.