MIMO Resource Control via Event-Triggered Activation in NR Systems
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Solution Overview
Problem
In mobile communication systems, especially in Next Radio (NR) environments, efficient MIMO resource management is challenging due to the need for rapid adaptation of MIMO states and resources during BWP switches or carrier deactivation, which affects the overall performance and efficiency of MIMO operations.
Innovation Solution
A method and apparatus are provided to control MIMO resources based on detected events, where UE performs specific MIMO-related operations for a specific BWP of a serving cell upon receiving a MAC Control Element or detecting specific events, ensuring efficient MIMO resource management and adaptation during state changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If MIMO resource adaptation is performed rapidly during BWP switches or carrier deactivation, then MIMO operation efficiency is improved, but system complexity and control overhead increase
Solution Approach 1:
The patent segments MIMO resource management into separate control mechanisms for different scenarios: MAC CE for explicit control and event-triggered mechanisms for automatic adaptation. This segmentation allows efficient MIMO operations in each scenario without requiring complex integrated control logic across all scenarios.
Solution Approach 2:
The patent configures event thresholds and MIMO resource associations in advance through RRC signaling before events occur. When events are detected, the pre-configured resources are immediately activated or deactivated without real-time negotiation, enabling rapid adaptation while avoiding complex runtime control procedures.
2Loss of time
If MIMO resources are quickly adapted during BWP switches, then MIMO response time is reduced, but control signaling overhead increases
Solution Approach 1:
MIMO resource configurations and event thresholds are pre-configured through RRC signaling before events occur. When events are detected, the UE automatically activates or deactivates pre-configured resources without requiring additional MAC CE signaling, thus reducing both response time and signaling overhead.
Solution Approach 2:
The UE autonomously monitors configured events and automatically triggers MIMO resource activation or deactivation based on event detection. This self-service mechanism eliminates the need for continuous network control signaling while maintaining rapid resource adaptation.
3Extent of automation
If event-triggered MIMO resource control is implemented, then automation level is improved, but detection and measurement difficulty increases
Solution Approach 1:
The patent transforms complex MIMO resource management into simple event threshold comparisons. The UE monitors physical layer parameters (such as RSRP, RSRQ, or SINR) and compares them against pre-configured thresholds, converting complex resource management decisions into straightforward parameter change detection.
Solution Approach 2:
Event thresholds act as intermediaries between physical layer measurements and MIMO resource control decisions. Instead of directly managing complex MIMO resources based on raw measurements, the system uses event triggers as a simplified mediation layer that converts continuous parameter variations into discrete control actions.
Data Source
AI summary
Data transfer method and apparatus for use in a mobile communication system are provided. Method to control the MIMO resources includes receiving MAC Control Element related with MIMO resource, adapting the MIMO resource according to the received MAC Control Elements, detecting a specific event impacting MIMO resource and adapting the MIMO resource according to the detected event.