Inter-node Signaling for Handover Report Configuration
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently configuring and handling successful handover reports (SHRs) during handovers between network nodes, particularly due to issues with SHR configuration retrieval and maintenance across nodes, leading to potential handover failures and increased latency.
Innovation Solution
A method where network nodes, including source and target nodes, exchange SHR configuration information to determine whether to configure or maintain SHR on user equipment (UE), allowing the UE to store and transmit SHR based on triggering conditions, ensuring seamless handover optimization even when nodes do not support SHR fetching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If SHR configuration is exchanged between network nodes during handover, then handover performance is improved, but configuration signaling overhead increases
Solution Approach 1:
The patent extracts only the necessary SHR configuration information that is needed for successful handover reporting, rather than transferring complete configuration sets. The source node determines which specific SHR parameters to retrieve from the target node, minimizing signaling overhead while ensuring handover performance is maintained.
Solution Approach 2:
The SHR configuration information is retrieved and prepared in advance during the handover preparation phase, before the actual handover execution. This preliminary action allows the source node to have the necessary configuration ready, avoiding the need for additional signaling during critical handover moments.
2Reliability
If SHR is stored on user equipment during handover, then handover reporting capability is improved, but memory consumption increases
Solution Approach 1:
The patent applies local quality by storing SHR information selectively on the user equipment only when and where it is needed for specific handover scenarios. The configuration includes triggers that determine when SHR should be stored and reported, rather than continuously maintaining SHR storage capability, thus optimizing memory usage while preserving reporting capability.
3Reliability
If SHR configuration is maintained across network nodes, then handover optimization is improved, but device complexity increases
Solution Approach 1:
The source network node autonomously determines whether to retrieve and maintain SHR configuration information based on its own assessment of handover requirements. The node independently decides which configuration parameters to obtain from the target node and how to maintain them, rather than relying on complex coordinated maintenance mechanisms between multiple nodes, thus reducing overall system complexity.
Data Source
AI summary
A communication device can receive a successful handover report (“SHR”) configuration from a first network node. The SHR configuration can include a triggering condition. The communication device can apply the SHR configuration. Responsive to the triggering condition being satisfied during a handover of the communication device from the first network node to a second network node, the communication device can store the SHR generated based on the SHR configuration.