Conditional Handover Configuration for Fast Cell Shutdown Offloading
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Solution Overview
Problem
Existing cell shutdown procedures in network communications are slow and prone to handover failures, leading to inefficient energy savings and increased power consumption due to slow offloading of UEs before cell shutdown.
Innovation Solution
Implementing energy saving conditional handover (ES-CHO) configurations that include optimized parameters for fast offloading of UEs to target cells, triggered by explicit or implicit network indications, and utilizing AI/ML for target cell selection to enhance the offloading process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing cell shutdown procedures are used, then energy saving mode can be activated, but the offloading process is slow and prone to handover failures
Solution Approach 1:
The patent applies preliminary action by pre-configuring handover parameters and candidate target cells before the cell shutdown is triggered. The UE receives handover configuration information in advance, including multiple candidate target cells and their associated parameters, so that when the shutdown trigger occurs, the UE can immediately execute handover without delay, thus resolving the contradiction between fast offloading and reliable handover.
Solution Approach 2:
The patent changes parameters by introducing energy saving specific conditional handover configurations with optimized parameters tailored for fast offloading during cell shutdown. These parameters include adjusted handover thresholds, timing configurations, and candidate cell selection criteria that are specifically optimized for the energy saving scenario, enabling both rapid and reliable handover execution.
2Loss of energy
If existing cell shutdown procedures are used, then cells can enter energy-saving modes, but energy savings are inefficient due to slow offloading
Solution Approach 1:
The patent applies preliminary action by pre-configuring handover parameters and candidate target cells before the cell shutdown is triggered. The UE receives handover configuration information in advance, including multiple candidate target cells and their associated parameters, so that when the shutdown trigger occurs, the UE can immediately execute handover without delay, thus resolving the contradiction between fast offloading and reliable handover.
Solution Approach 2:
The patent changes parameters by introducing energy saving specific conditional handover configurations with optimized parameters tailored for fast offloading during cell shutdown. These parameters include adjusted handover thresholds, timing configurations, and candidate cell selection criteria that are specifically optimized for the energy saving scenario, enabling both rapid and reliable handover execution.
3Reliability
If traditional handover configurations are used, then standard procedures are followed, but handover failures occur due to slow response during cell shutdown
Solution Approach 1:
The patent applies preliminary action by pre-configuring handover parameters and candidate target cells before the cell shutdown is triggered. The UE receives handover configuration information in advance, including multiple candidate target cells and their associated parameters, so that when the shutdown trigger occurs, the UE can immediately execute handover without delay, thus resolving the contradiction between fast offloading and reliable handover.
Solution Approach 2:
The patent changes parameters by introducing energy saving specific conditional handover configurations with optimized parameters tailored for fast offloading during cell shutdown. These parameters include adjusted handover thresholds, timing configurations, and candidate cell selection criteria that are specifically optimized for the energy saving scenario, enabling both rapid and reliable handover execution.
Data Source
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AI summary
Systems, methods, apparatuses, and non-transitory computer-readable medium for conditional handover configuration for fast offloading during cell shutdown. For example, a method comprises receiving, with a user equipment from a serving cell, one or more handover configurations. The one or more handover configurations comprises an energy saving conditional handover configuration. At least one of the one or more handover configurations comprises at least one of: an indication of one or more candidate target cells, or information for target cell selection. The method also comprises receiving, from the serving cell, an indication of activation of an energy saving mode at the serving cell. The method further comprises selecting a target cell, from the one or more candidate target cells, based, at least partially, on the one or more handover configurations and the received indication of activation of the energy saving mode at the serving cell.