UE MBB Handover Capability Configuration
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Solution Overview
Problem
Current wireless communication systems face challenges in performing seamless handovers between multiple transmit/receive points (TRPs) without service interruption, leading to decreased reliability and increased resource usage due to insufficient UE capabilities and uncoordinated communications.
Innovation Solution
A method for user equipment (UE) to determine its capability for a make-before-break (MBB) handover between source and target TRP sets, selectively using a first or second capability configuration based on sufficiency, and performing multiplexing techniques to manage links and communications, while providing hybrid automatic repeat request (HARQ) feedback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a UE performs a handover between multiple TRPs, then service continuity and reliability are improved, but resource usage increases and collisions may occur due to uncoordinated communications
Solution Approach 1:
The patent applies preliminary action by establishing a handover preparation phase where the target TRP is pre-configured and resources are pre-allocated before the actual handover executes. This allows the UE to maintain connections with both source and target TRPs simultaneously, ensuring service continuity while optimizing resource usage through advance planning.
Solution Approach 2:
The patent implements dynamics through adaptive capability configuration where the UE dynamically selects between full capability configuration (supporting multiple TRPs simultaneously) and reduced capability configuration (supporting single TRP) based on current network conditions and UE capabilities. This dynamic adaptation resolves the contradiction by adjusting resource usage to match actual handover requirements.
2Reliability
If a UE uses full capability configuration for MBB handover, then handover reliability is improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent applies dynamics by making the capability configuration adaptive rather than static. The UE assesses its current capabilities and network conditions, then dynamically selects between full capability configuration (for high reliability scenarios) and reduced capability configuration (for simpler scenarios). This resolves the contradiction by matching configuration complexity to actual handover requirements.
Solution Approach 2:
The patent implements parameter changes by allowing the UE to switch between different capability configuration states (full vs. reduced) based on assessed needs. This parameter adjustment enables the system to optimize between reliability and device complexity by selecting the appropriate configuration level for each specific handover scenario.
3Reliability
If a UE maintains connections with multiple TRPs simultaneously, then service continuity is improved, but the risk of communication collisions and interference increases
Solution Approach 1:
The patent applies preliminary action by pre-coordinating communication schedules between source and target TRPs before the handover executes. This advance coordination allows the system to allocate time-frequency resources in a way that minimizes collisions, enabling the UE to maintain simultaneous connections without excessive interference.
Solution Approach 2:
The patent implements feedback mechanisms where the UE monitors communication quality and collision levels during multi-TRP operation, then provides feedback to the network. This feedback enables dynamic adjustment of resource allocation and handover parameters to minimize collisions while maintaining service continuity.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine whether a capability of the UE is sufficient for a make-before-break (MBB) handover from a source set of cells to a target set of cells, wherein the source set of cells is provided by a first set of transmit/receive points (TRPs) and the target set of cells is provided by a second set of TRPs; and selectively perform the MBB handover using a first capability configuration for the MBB handover or a second capability configuration for the MBB handover based at least in part on whether the capability of the UE is sufficient for the MBB handover. Numerous other aspects are provided.