Multi-Node CSI-RS Configuration Coordination for Lower Signalling Overhead
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Solution Overview
Problem
Existing methods for supporting mobility in wireless communications networks lead to high signalling overhead, waste of resources such as energy and time-frequency resources, and unnecessary delays, resulting in suboptimal network performance.
Innovation Solution
A method where a first network node sends an indication to a second network node about the transmission status of one or more CSI-RS configurations, allowing the second network node to manage the first network node and configure wireless devices accordingly, thereby optimizing CSI-RS measurements and reducing unnecessary resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods for supporting mobility are used, then wireless devices can be managed across network nodes, but signalling overhead increases and resources are wasted
Solution Approach 1:
The patent extracts and removes unnecessary CSI-RS measurement configurations from the system. When a wireless device is revoked from a target network node, the corresponding CSI-RS measurement configurations are removed and not transmitted, eliminating wasted resources while maintaining mobility support for active devices
Solution Approach 2:
The system dynamically adjusts CSI-RS measurement configurations based on real-time wireless device associations. The source network node determines which configurations to transmit to target nodes based on current mobility states, making the system adaptive rather than static, thereby reducing unnecessary resource usage
2Reliability
If existing methods for supporting mobility are used, then network nodes can coordinate wireless device management, but signalling overhead increases
Solution Approach 1:
The patent extracts only the essential information needed for mobility coordination - specifically, the indication of revoked wireless devices and their associated CSI-RS configurations. This selective information exchange reduces signalling overhead while maintaining necessary network coordination
Solution Approach 2:
Instead of exchanging complete mobility management information, the system uses partial action by sending only specific indications of revoked devices. This partial information exchange is sufficient for target nodes to update their configurations without requiring full-detail signalling
3Reliability
If existing methods for supporting mobility are used, then wireless devices can be handed over between cells, but unnecessary delays occur
Solution Approach 1:
The system performs preliminary actions by pre-configuring target network nodes with necessary information before handover occurs. When a wireless device is revoked, the source node immediately indicates this to target nodes, allowing them to prepare configuration updates in advance, reducing actual handover execution time
Solution Approach 2:
The patent enables the system to skip unnecessary processing steps by directly indicating revoked device states. Target nodes can immediately update their CSI-RS configurations without waiting for extensive confirmation sequences, rushing through the handover process more efficiently
Data Source
AI summary
A method performed by a first network node. The first network node operates in a communications network. The method is for handling a measurement configuration. The first network node sends an indication to a second network node operating in the communications network. The indication indicates a transmission status of one or more Channel State Information-Reference Signal (CSI-RS) configurations of the first network node. The second network node receives the indication. The third network node receives another indication from the second network node. The third network node is managed by the second network node. The another indication indicates a transmission status of the one or more CSI-RS configurations of the first network node and configures the wireless device based on the received other indication.