UE-Specific Measurement Set Configuration in Cluster Cells
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Solution Overview
Problem
In heterogeneous cellular networks, the selection of transmission points for UE-specific measurement sets in cluster cells is often less than optimal, leading to inefficient and inaccurate signal measurements, which can reduce capacity and resource usage efficiency, and may not be suitable for all scenarios.
Innovation Solution
A controlling node identifies conditions affecting radio communication performance in cluster cells and selects appropriate reference signals and radio measurements from a mapping table to configure a UE-specific measurement set, ensuring that only the most suitable transmission points are included for efficient signal measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a UE-specific measurement set is configured with multiple transmission points in a cluster cell, then the network can provide better coverage and capacity, but the measurement accuracy and efficiency deteriorate due to suboptimal selection of transmission points
Solution Approach 1:
The patent changes the parameter of measurement configuration by dynamically selecting reference signal types (CSI-RS, CRS, SRS) and measurement types (RSRP, RSRQ, CQI, PMI, RI) based on identified communication conditions. This allows the measurement set to adapt to different scenarios, improving both network capacity and measurement accuracy simultaneously
Solution Approach 2:
The patent implements dynamic configuration of UE-specific measurement sets where the controlling node identifies conditions affecting radio communication and adjusts the measurement set composition accordingly. This dynamic approach replaces static measurement configurations, enabling the system to optimize both capacity and measurement precision adaptively
2Productivity
If transmission points are selected for UE-specific measurement sets without considering specific communication conditions, then the configuration process is simplified, but the resource usage efficiency and capacity are reduced
Solution Approach 1:
The patent applies preliminary action by pre-identifying conditions that affect radio communication performance before configuring the measurement set. The controlling node proactively selects appropriate reference signals and measurements based on these pre-identified conditions, avoiding ad-hoc configuration and improving resource efficiency
Solution Approach 2:
The patent introduces an intermediary mechanism - a mapping table stored in the controlling node that maps identified conditions to appropriate reference signal types and measurement types. This intermediary structure systematizes the configuration process, managing complexity through structured relationships rather than arbitrary decisions
3Adaptability or versatility
If a fixed measurement configuration is used for all scenarios in cluster cells, then the system operation is simplified, but the configuration becomes unsuitable for diverse communication conditions
Solution Approach 1:
The patent enables parameter changes by allowing the measurement configuration to vary based on identified conditions. Different reference signal types (CSI-RS, CRS, SRS) and measurement types (RSRP, RSRQ, CQI, PMI, RI) are selected according to the specific communication scenario, providing adaptability while maintaining operational simplicity through automated selection
Solution Approach 2:
The patent implements universality by creating a multi-functional measurement configuration system that can handle diverse scenarios through a single adaptive framework. The mapping table approach provides a universal mechanism that works across different conditions without requiring separate configuration procedures for each scenario
Data Source
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AI summary
A method and controlling node ( 400) of a cellular network, to control measurements on signals to or from a User Equipment, UE, engaged in a radio communication in a cluster cell served by multiple transmission points (404). A set of conditions potentially affecting performance for the UE in the cluster cell, is identified. At least one type of reference signals and corresponding radio measurement(s) are then selected based on the identified set of conditions. The controlling node obtains measurements made on the selected type(s) of reference signals according to the radio measurement(s), and configures a UE-specific measurement set of transmission points (406) for the UE, out of the transmission points (404) serving the cluster cell, based on the obtained measurements. The UE is then instructed to perform and report measurements on UE-specific downlink signals transmitted from the transmission points of the UE-specific measurement set.