Mobile IAB Cell Reconfiguration for Seamless Terminal Handover
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Solution Overview
Problem
The challenge of reconfiguring a cell for a mobile IAB node without affecting the services of active terminals during movement, particularly addressing PCI conflicts and other reconfiguration needs.
Innovation Solution
A method and system for cell reconfiguration involving a network control node and mobile IAB node, where a second cell is configured as a secondary or primary secondary cell for a terminal, establishing a connection with the terminal, and releasing the first cell, using techniques like carrier aggregation and dual connectivity to ensure service continuity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cell reconfiguration is performed for mobile IAB node, then cell can be reconfigured to avoid PCI conflicts and maintain network operation, but service continuity of active terminals will be affected
Solution Approach 1:
The patent applies preliminary action by preparing a second cell before the first cell needs to be released. The network control node configures the second cell as a secondary cell or primary secondary cell of the terminal in advance, so that when cell reconfiguration is needed, the terminal can switch to the pre-prepared second cell, avoiding service interruption and maintaining reliability during the reconfiguration process.
2Adaptability or versatility
If frequent cell handovers are performed, then mobile IAB node can adapt to movement and maintain connection, but service interruption is caused and terminal rate is reduced
Solution Approach 1:
The patent implements preliminary action by pre-configuring the second cell as a secondary or primary secondary cell before the actual handover is needed. This allows the terminal to have a ready-to-use alternative cell, enabling smoother handovers that adapt to mobile IAB node movement without causing service interruption or reducing terminal rates.
3Reliability
If cell reconfiguration is performed without affecting active terminals, then service continuity is maintained, but reconfiguration complexity increases
Solution Approach 1:
The patent uses the second cell as an intermediary element during the reconfiguration process. The second cell acts as a bridge or mediator that allows the network to switch from the first cell to a new configuration without directly disrupting the active terminal's service. This intermediary approach maintains service continuity while managing the complexity of the reconfiguration process through a structured transition mechanism.
Data Source
AI summary
Embodiments of the present disclosure provide a cell reconfiguration method, a network control node, and a mobile IAB node. The method includes: performing a cell reconfiguration operation, where the performing a cell reconfiguration operation includes: configuring a mobile IAB node to configure a second cell as a secondary cell or a primary secondary cell of a terminal and to configure the second cell to establish a connection with the terminal; and configuring the mobile IAB node and the terminal to release a first cell. The second cell is a new cell created by the mobile IAB node or an existing cell of the mobile IAB node, and the terminal is a terminal that provides services to the first cell.