Conditional Handover Control for Timely Pre-Sleep Network Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional conditional handover (CHO) methods are inflexible and inefficient, particularly in network energy saving scenarios, as they do not allow for timely and controlled initiation of CHO operations, leading to unnecessary power consumption and delayed handovers.
Innovation Solution
A method and apparatus for conditional handover that enables terminals to initiate CHO-related operations in response to control information, including execution, configuration changes, evaluation, and measurement operations, allowing for flexible implementation and timely handovers before network energy saving states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional conditional handover methods are used, then handover execution is automatic based on measurement conditions, but the system lacks flexibility and efficiency in network energy saving scenarios
Solution Approach 1:
The patent applies preliminary action by enabling the terminal to initiate CHO-related operations (execution, configuration changes, evaluation, or measurement) in advance based on control information from the network side device, before the network enters energy saving state. This allows the handover preparation to start proactively, improving flexibility while maintaining operational control through network-triggered initiation.
2Reliability
If CHO evaluation is continuously performed, then handover readiness is maintained, but power consumption increases
Solution Approach 1:
The patent implements periodic action by having the terminal perform CHO-related operations only when triggered by control information from the network side device, rather than continuously. The terminal can be instructed to initiate evaluation, measurement, or execution operations at specific times, reducing power consumption while maintaining handover readiness when needed through network-controlled periodic triggering.
3Loss of energy
If network enters energy saving state quickly, then energy efficiency improves, but handover may be delayed or fail
Solution Approach 1:
The patent resolves this contradiction by applying preliminary action - the network side device sends control information to the terminal in advance before entering energy saving state, instructing the terminal to initiate CHO-related operations. This allows the terminal to complete handover preparation and execution before the network transitions to energy saving mode, ensuring timely handover while enabling the network to quickly enter energy saving state afterward.
Data Source
AI summary
Provided are conditional handover method and apparatus, a terminal, and a network side device. The conditional handover method includes: receiving, by a terminal, control information, where the control information is used for triggering a conditional handover CHO-related operation; and initiating, by the terminal, the conditional handover CHO-related operation in response to the control information, where the initiating the CHO-related operation includes at least one of the following: initiating an execution operation of CHO; initiating an operation of changing or applying a CHO configuration; initiating a CHO evaluation operation in a case that the terminal is configured with the CHO and CHO evaluation is not started; or initiating a CHO-related measurement operation.