Conditional Reconfiguration for Wireless Handover
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Solution Overview
Problem
Current wireless communication systems face challenges in seamlessly switching between terrestrial (TN) and non-terrestrial (NTN) networks, particularly during handover (HO) processes, which can affect service continuity and quality of service (QoS) requirements.
Innovation Solution
The implementation of a conditional reconfiguration method for handover (HO) to a target cell, where user equipment (UE) receives conditional reconfiguration parameters and acquires system information blocks (SIB) associated with candidate target cells, enabling HO only when specific execution conditions are met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conditional reconfiguration parameters are received and SIB type is acquired before handover, then service continuity and QoS are improved, but handover execution time and procedure complexity increase
Solution Approach 1:
The UE receives conditional reconfiguration parameters and acquires the SIB type of the target cell before the handover is actually executed. This preliminary preparation ensures that when handover conditions are met, the UE can switch cells rapidly with all necessary information already available, thereby improving service continuity while managing execution time efficiently.
2Reliability
If conditional reconfiguration parameters are received and SIB type is acquired before handover, then handover reliability is improved, but signaling overhead and procedure complexity increase
Solution Approach 1:
The network device sends conditional reconfiguration parameters to the UE in advance, including the SIB type of the target cell. This allows the UE to prepare handover information beforehand, ensuring reliable handover execution when conditions are met, while the network manages the complexity of coordinating this preliminary information exchange.
3Reliability
If SIB type acquisition is required before handover execution, then handover success rate is improved, but network signaling overhead increases
Solution Approach 1:
The network device transmits the SIB type of the target cell to the UE as part of the conditional reconfiguration parameters before handover execution. This preliminary provision of system information ensures the UE has all necessary data for successful handover when conditions are met, while reducing the need for additional signaling during the actual handover process.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for a conditional reconfiguration corresponding to handover (“HO”) to a target cell. One method includes receiving, at a user equipment (“UE”), a conditional reconfiguration including at least one set of reconfiguration parameters. Each set of reconfiguration parameters of the at least one set of reconfiguration parameters corresponds to each candidate target cell of at least one candidate target cell. The method includes acquiring a system information block (“SIB”) type of a source cell. The SIB type is associated with a candidate target cell of the at least one candidate target cell. The method includes performing a HO to the candidate target cell in response to an execution condition associated with the candidate target cell being fulfilled and the SIB type being associated with the candidate target cell being acquired.