PCI Split Handling for Mobile Terminal Connectivity
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Solution Overview
Problem
Mobile terminals often continue to use outdated PCI/PSC splits for extended durations, leading to connectivity issues as they fail to find the best available cell or connect to the network, especially after relocation.
Innovation Solution
A method and apparatus that determine whether the current PCI/PSC split is valid for the current location, causing it to be deleted or not utilized if it is not configured to camp on the selected cell, allowing the terminal to read and use a new split or exclude cells with the outdated split from reselection criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the PCI/PSC split is tied to a carrier frequency with a lengthy duration (e.g., twenty four hours), then the configuration remains stable and valid for extended periods, but the mobile terminal may continue to use outdated PCI/PSC split information after relocation, resulting in inability to find or connect to the best available cell
Solution Approach 1:
The patent applies dynamics by making the PCI/PSC split validity duration adjustable rather than fixed. The system dynamically adapts the duration parameter based on terminal movement detection, allowing longer validity for stationary terminals and shorter validity or invalidation for moving terminals, thus resolving the contradiction between stability and connectivity reliability
Solution Approach 2:
The patent implements feedback mechanisms where the system monitors terminal movement status and location changes. Based on this feedback, the network can adjust or invalidate the PCI/PSC split configuration appropriately. This feedback loop ensures that outdated configurations are detected and corrected, maintaining connectivity reliability while allowing extended validity when appropriate
2Loss of time
If the mobile terminal stores and uses PCI/PSC split information for extended periods, then memory resources are efficiently utilized, but the terminal may not be able to connect to the network after relocation due to using outdated split information
Solution Approach 1:
The patent applies preliminary action by having the terminal proactively detect movement or location changes and invalidate stored PCI/PSC split information before attempting network connection. This preliminary invalidation prevents the use of outdated information, ensuring connection reliability while minimizing the time needed to acquire new configuration data
Data Source
AI summary
A method, apparatus and computer program product are provided for deleting and/or not utilizing a PCI/PSC split in instances in which the PCI/PSC split may no longer be valid in a current location. An example method may include determining whether a current physical cell id (PCI) split is configured to camp on a selected cell. The method 5 may further include causing the current PCI split to not be utilized in an instance in which the PCI split is not configured to camp on the selected cell.