CSI-RS Resource Deactivation for Layer 1/2 Triggered Mobility
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face inefficiencies in managing Layer 1 and Layer 2 triggered mobility, leading to suboptimal handover processes and resource management in heterogeneous networks.
Innovation Solution
Implementing mechanisms for deactivating and activating Layer 1 and Layer 2 mobility triggers based on specific criteria, such as traffic load and device capabilities, to optimize handover processes and resource allocation in heterogeneous networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If Layer 1 and Layer 2 triggered mobility is continuously activated, then handover responsiveness is improved, but network resource consumption and device complexity increase
Solution Approach 1:
The patent implements dynamic activation and deactivation of Layer 1 and Layer 2 mobility triggers based on current network conditions and device states. The network can selectively enable or disable mobility trigger mechanisms according to traffic load, device capabilities, and service requirements, allowing the system to adapt between high responsiveness and low complexity modes as needed.
Solution Approach 2:
The patent changes the operational parameters of mobility management by introducing configurable thresholds and conditions for activating Layer 1 and Layer 2 triggers. By adjusting parameters such as signal quality thresholds, traffic load thresholds, and device capability indicators, the system optimizes the balance between handover responsiveness and resource consumption.
2Measurement precision
If Layer 1 and Layer 2 triggered mobility mechanisms are activated, then handover accuracy is improved, but signaling overhead and processing load increase
Solution Approach 1:
The patent extracts and separates the mobility trigger mechanisms into distinct Layer 1 and Layer 2 components that can be independently activated. This allows the system to use only the necessary measurement and reporting mechanisms for each specific scenario, reducing unnecessary signaling overhead while maintaining handover accuracy when needed.
Solution Approach 2:
The patent applies partial action by selectively enabling only the required portion of mobility management functionality based on current needs. Instead of continuously running all measurement and reporting mechanisms, the system activates specific Layer 1 or Layer 2 triggers only when conditions warrant their use, reducing processing load and signaling overhead.
3Reliability
If mobility resources are continuously allocated, then service continuity is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent implements periodic evaluation of mobility resource allocation based on event triggers such as signal quality changes, traffic load variations, or handover predictions. Resources are allocated and released in periodic cycles triggered by specific events rather than continuously, ensuring service continuity when needed while improving resource utilization efficiency during stable periods.
Solution Approach 2:
The patent uses Layer 1 triggered mobility to perform preliminary measurements and predictions before actual handover decisions are made. This preliminary action allows the system to prepare mobility resources in advance when conditions suggest potential handover needs, ensuring service continuity while avoiding premature or unnecessary resource allocation.
Data Source
AI summary
A base station central unit sends, to a base station distributed unit, a UE context setup or modification request message, for a wireless device, comprising an identifier of a candidate cell for LTM of the wireless device. The base station distributed unit receives a UE context setup or modification response message comprising a configuration of the candidate cell, and sends, to the base station distributed unit, a message comprising a parameter indicating whether to activate or deactivate a channel state information reference signal (CSI-RS) resource of the candidate cell for the LTM of the wireless device.