NCD-SSB Signaling for Neighboring-Cell Positioning Accuracy
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately determining the quasi-co-location (QCL) relation between positioning reference signals (PRS) and synchronization signal blocks (SSB), particularly for non-cell-defining SSBs (NCD-SSBs), which hinders precise positioning in 5G networks.
Innovation Solution
The method involves configuring user equipment (UE) to receive and utilize first configuration information for PRS and SRS resources, establishing a QCL relation with NCD-SSBs transmitted by neighboring TRPs, enabling accurate positioning measurements and transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If NCD-SSBs are used for positioning in 5G networks, then positioning accuracy is improved, but the complexity of determining QCL relations between PRS and SSB is increased
Solution Approach 1:
The network configures QCL relations between NCD-SSBs and PRS resources in advance through RRC signaling or OMC configuration. This preliminary configuration allows the UE to perform positioning measurements without needing to determine QCL relations in real-time, thus improving positioning accuracy while avoiding the complexity of dynamic QCL determination.
Solution Approach 2:
The patent introduces configuration information as an intermediary that carries QCL relation parameters between the network and UE. This configuration message serves as a mediator that pre-establishes the QCL relationships, allowing the UE to directly use these pre-defined relations for positioning without performing complex real-time analysis.
2Loss of time
If QCL relations are pre-configured for NCD-SSBs, then positioning speed is improved, but the flexibility in adapting to different positioning scenarios is reduced
Solution Approach 1:
The system supports dynamic switching between different QCL configuration modes. The network can configure different QCL relations for different positioning scenarios, and the UE can adaptively select the appropriate configuration based on the current positioning needs, thus maintaining both speed and flexibility.
Solution Approach 2:
The patent allows changing QCL configuration parameters based on different positioning scenarios. The network can update QCL relations through reconfiguration signaling when positioning requirements change, enabling the system to adapt to different scenarios while maintaining efficient pre-configured operations.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) receives first configuration information for a first positioning reference signal (PRS) resource transmitted by a first neighboring transmission-reception point (TRP), the first configuration information indicating a first quasi-co-location (QCL) relation between the first PRS resource and a first synchronization signal block (SSB) transmitted by the first neighboring TRP, wherein the first SSB is a non-cell-defining SSB (NCD-SSB), and obtains a first positioning measurement of the first PRS resource based on a QCL relation between the first PRS resource and an SSB transmitted by the first neighboring TRP.