Base Station Cell Reboot Handover Management
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Solution Overview
Problem
In dynamic cellular networks with increasing numbers of base stations and varying configurations, PCI conflicts become frequent, leading to service interruptions during cell reboots, as existing techniques struggle to manage handovers efficiently and maintain seamless user experience.
Innovation Solution
A method where a cellular network proactively performs handovers of User Equipment from a rebooting cell to another cell within the same base station, prioritizing reboots and managing handovers based on capacity and coverage to minimize service disruption, allowing for self-controlled reboots without external network intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cell reboots to resolve PCI conflicts in dynamic networks, then the conflict is resolved and network stability is improved, but service interruption occurs and user connectivity is disrupted
Solution Approach 1:
The base station performs handover of user equipment to a target cell before initiating the reboot of the source cell. This preliminary action ensures that user connectivity is maintained during the reboot process, as users are already transferred to an alternative cell before the source cell becomes unavailable due to rebooting.
2Reliability
If handover is performed during cell reboot, then service continuity is maintained, but handover management complexity increases
Solution Approach 1:
The base station autonomously manages the handover process without requiring external network intervention. The system identifies suitable target cells, executes handover decisions, and coordinates the reboot process independently, reducing the complexity of managing handovers through automated self-service mechanisms.
3Productivity
If multiple cells are rebooted simultaneously, then PCI conflicts are resolved efficiently, but user equipment handover becomes more difficult and service disruption increases
Solution Approach 1:
When multiple cells need rebooting, the system processes them one at a time rather than simultaneously. The base station selects a single source cell for handover operations, completes the handover to a target cell, and only then initiates the reboot of the source cell. This segmentation of the reboot process into sequential operations simplifies handover management and reduces service disruption.
Data Source
AI summary
Systems and methods for operating a cellular telecommunications network. If determining that a first cell of a base station is about to reboot, performing a handover of one or more User Equipments from that cell to a second cell. After the reboot, the user equipment may be handed back to the rebooted cell.If both cells are to reboot, a determination is made to identify which cell's reboot operation is to be prioritized, a handover of the user equipment attached to the prioritized cell to the other cell is made, the prioritized cell is rebooted, all the user equipments are handed over from the non-prioritized cell to the (now rebooted) prioritized cell, the non-prioritized cell is rebooted and the user equipment that was initially attached to the non-prioritized cell is handed over from the prioritized cell back to the now rebooted non-prioritized cell.