Communication Node Handover via Signal Quality Thresholds

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Solution Overview

Problem

In communication networks, particularly in mobile Xhaul networks, handovers of terminals can result in communication disconnection and transmission delays due to the release and re-establishment of radio links between hubs.

Innovation Solution

An operation method for communication nodes that measures signal qualities from adjacent hubs, compares these with predetermined threshold values, and performs handover procedures such as establishing, changing, or releasing radio links based on these comparisons to ensure seamless handovers without disconnection or delay.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a terminal releases a connection to a serving hub and establishes a connection to a target hub during handover, then mobility support is achieved, but communication disconnection and transmission delay occur

Engineering Contradiction:

Improvemobility supportVSAvoidcommunication continuity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The source hub is notified of the upcoming handover before the terminal actually switches connections. This allows the source hub to prepare for the handover in advance, maintaining awareness of the terminal's data transmission status and enabling seamless connection transfer without communication interruptions

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The source hub acts as an intermediary during the handover process. It receives notification of the handover, maintains the existing connection temporarily, and coordinates the data transmission transition to the target hub, ensuring continuous communication throughout the mobility event

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a terminal releases a connection to a serving hub and establishes a connection to a target hub during handover, then mobility support is achieved, but transmission delay increases

Engineering Contradiction:

Improvemobility supportVSAvoidtransmission delay

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The handover process is designed to maintain continuous data transmission throughout the connection switch. The source hub retains knowledge of ongoing transmissions and coordinates with the target hub to ensure uninterrupted data flow, eliminating delays that would normally occur during connection transitions

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUS10694442B2Operation method of communication node in communication network

Publication Date: 2020.06.23 ELECTRONICS & TELECOMM RES INST

AI summary

An operation method of a first communication node connected to a first hub in a communication network may comprise measuring signal qualities for a first radio signal received from the first hub and a second radio signal received from a second hub adjacent to the first hub; calculating a difference in the signal qualities for the first radio signal and the second radio signal; comparing the calculated difference with a plurality of predetermined threshold values for handover of the first communication node; and performing a handover-related procedure indicated by one of the plurality of predetermined threshold values based on a result of the comparison.