Conditional RRC Reconfiguration Retention for Seamless Cell Handover
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing handovers and reconfigurations in heterogeneous networks, particularly in scenarios involving non-terrestrial networks (NTN) and multiple radio access technologies, leading to increased latency and reduced network performance.
Innovation Solution
Implementing conditional reconfiguration mechanisms that allow for the retention and execution of pre-defined reconfiguration settings based on predefined criteria, enabling seamless handovers and reducing the need for real-time network adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If real-time network adjustments are implemented for handovers and reconfigurations, then network responsiveness is improved, but latency increases and network stability deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-configuring reconfiguration settings and criteria before handover events occur. The network node provides the wireless device with multiple candidate reconfiguration settings and associated execution criteria in advance, allowing the device to autonomously execute the appropriate pre-defined configuration when criteria are met, eliminating the need for real-time network decisions and reducing latency.
2Stability of the object's composition
If conditional reconfiguration retention is implemented, then network stability is improved, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the reconfiguration management into distinct components: multiple independent candidate reconfiguration settings, each with its own execution criteria. The network node segments the configuration data into separate information elements, and the wireless device evaluates each segment independently against current conditions, selecting the appropriate pre-configured option without requiring complex real-time decision-making logic.
3Adaptability or versatility
If multiple candidate reconfiguration settings are stored, then adaptability is improved, but memory requirements and device complexity increase
Solution Approach 1:
The patent applies universality by designing a multi-functional reconfiguration setting structure where each candidate configuration can serve multiple purposes. The same reconfiguration setting information element can be reused across different scenarios and criteria, allowing the system to achieve high adaptability with a limited set of standardized configuration templates rather than requiring unique configurations for every possible scenario.
Data Source
AI summary
A wireless device initiates, based on one or more first conditions for adding or changing a cell in a first conditional reconfiguration, a radio resource control (RRC) reconfiguration procedure for adding or changing the cell. After initiating the RRC reconfiguration procedure and based on one or more time points, the wireless device removes the first conditional reconfiguration from a list of conditional reconfigurations or retains the first conditional reconfiguration in the list of conditional reconfigurations.