Base Station Handover With Advance Delay Notification

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In a handover scenario from a source base station device to a destination base station device, the use of outdated delay information for controlling user equipment leads to deteriorated control performance due to changes in the communication path's delay information.

Innovation Solution

Implement a communication device with a delay notification unit that issues delay information and switching time information before the path switch, and a handover execution unit that requests the path switch at the designated time, along with a control unit that utilizes the updated delay information post-switch.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a handover from source base station device to destination base station device is executed, then communication path switching is achieved, but control performance deteriorates due to use of outdated delay information

Engineering Contradiction:

Improvecontrol performanceVSAvoiddelay information accuracy

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The system performs preliminary actions by notifying the control unit of delay information and switching time information before the actual communication path switching occurs. This allows the control unit to prepare and switch to the new delay information in advance, ensuring continuous accurate control performance during handover.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback by notifying the control unit of the switching time information when communication path switching is executed. This feedback mechanism allows the control unit to synchronize its delay information updates with the actual path switching, preventing the use of outdated information and maintaining control accuracy.

Inventive Principle:

Principle #23Feedback

2Measurement precision

If delay information is updated after communication path switching, then accurate control is achieved, but control performance deteriorates during the transition period

Engineering Contradiction:

Improvedelay information accuracyVSAvoidcontrol performance maintenance time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system provides delay information and switching time information to the control unit before the communication path switching is executed. This preliminary notification allows the control unit to update its delay information in advance, eliminating the transition period where outdated information would be used and maintaining continuous measurement precision.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250317374A1Communication apparatus, communication system, notification method, control method and program

Publication Date: 2025.10.09 NIPPON TELEGRAPH & TELEPHONE CORP

AI summary

A base station device includes: a delay notification unit that, before a communication path to user equipment is switched, executes processing of issuing information of the switched communication path or delay information of the communication path and information regarding a switching time of the communication path; and a handover execution unit that requests a predetermined switching device to switch the communication path at the switching time. A collection device includes: a delay collection unit that, before a communication path to user equipment is switched, collects information of the switched communication path or delay information of the communication path and information regarding a switching time of the communication path; and a control unit that, after the switching time, controls the user equipment by using the delay information associated with the issued information of the communication path or the issued delay information.