Early Data Forwarding Routing for Conditional Handover
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Solution Overview
Problem
Existing wireless communication systems face challenges in optimizing data forwarding during conditional handover with secondary cell groups (CHO with SCG), leading to resource abuse and high latency due to multiple data forwarding paths without proper optimization.
Innovation Solution
Implement a method and apparatus that support data forwarding by determining and optimizing routing for early data forwarding, using a processor and transceiver to manage data forwarding paths, including identity and estimated arrival probabilities of candidate target nodes, to reduce redundant paths and resource abuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If early data forwarding is applied to multiple potential target nodes for CHO with SCG, then handover latency is reduced and data forwarding is prepared in advance, but network resources are abused due to multiple redundant data forwarding paths
Solution Approach 1:
The source node performs preliminary actions by establishing data forwarding paths to multiple potential target nodes before the actual handover occurs. This allows data to be ready at the target node when handover is needed, reducing handover latency and interruption time.
Solution Approach 2:
The patent extracts and eliminates redundant data forwarding paths by identifying when multiple paths lead to the same target node. The source node selectively establishes forwarding paths only when necessary, removing unnecessary paths that would consume network resources without providing additional benefit.
2Reliability
If multiple data forwarding paths are established for CHO with SCG, then data forwarding reliability is improved, but device complexity increases due to path management overhead
Solution Approach 1:
The system dynamically manages data forwarding paths by establishing, maintaining, and releasing paths based on real-time conditions. The source node adjusts the forwarding path configuration according to handover progress and network state, optimizing the balance between reliability and complexity.
Solution Approach 2:
The patent merges multiple data forwarding paths that converge on the same target node into a unified forwarding strategy. Instead of managing separate paths independently, the system combines them and selects the most appropriate path based on current conditions, reducing management complexity while maintaining reliability.
Data Source
AI summary
Embodiments of the present application relate to a method and apparatus of supporting data forwarding. An exemplary apparatus, e.g., a candidate target master node (MN) may include: a processor, configured to: determine information of routing optimization for early data forwarding associated with one or more candidate target secondary nodes (SNs) at least prepared by the MN, wherein the early data forwarding is for a conditional handover (CHO) with secondary cell group (SCG) of a user equipment (UE); and a transceiver, coupled to the processor and configured to: transmit the information of routing optimization to a source MN.