IAB Node Full Migration With Group Handover Load Balancing
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Solution Overview
Problem
Existing wireless communication systems face challenges in ensuring accurate signal transmission and reception while reducing power consumption in user equipment devices, particularly in devices with increased functionality, which can strain battery life.
Innovation Solution
Implementing techniques for inter-donor full migration of mobile integrated access and backhaul nodes, allowing for distributed unit migration and group handover, enabling load balancing and efficient resource allocation in cellular networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If distributed unit migration is performed for integrated access and backhaul node, then network resource utilization is improved, but device complexity increases
Solution Approach 1:
The IAB node is segmented into two independent migration entities: mobile termination (MT) and distributed unit (DU). The MT migration handles control plane functions while the DU migration handles user plane functions. This segmentation allows independent optimization of each migration process, improving overall network resource utilization while managing complexity through functional separation.
2Adaptability or versatility
If full migration of IAB node is performed, then load balancing capability is improved, but signaling overhead increases
Solution Approach 1:
The network performs preliminary actions by establishing conditional handover configurations and pre-configuring target donor nodes before actual migration is needed. This allows the system to quickly execute load balancing decisions with minimal signaling overhead when migration conditions are met, as the complex configuration work has already been completed in advance.
3Productivity
If group handover is implemented for wireless devices, then handover efficiency is improved, but control complexity increases
Solution Approach 1:
Multiple wireless devices are grouped together and handled as a single entity during handover operations. The network performs group handover by managing all devices in the group simultaneously through unified signaling, reducing overall control complexity compared to individual device handling while maintaining high handover efficiency through batch processing.
Data Source
AI summary
This disclosure relates to techniques for performing inter-donor full migration of mobile integrated access and backhaul nodes in a wireless communication system. An integrated access and backhaul node may perform mobile termination migration from a source donor centralized unit to a target donor centralized unit. The node may also perform distributed unit migration from the source donor centralized unit to the target donor centralized unit. Handover from the source donor centralized unit to the target donor centralized unit may be configured for one or more wireless devices served by the distributed unit of the integrated access and backhaul node.