Aggregated DL-PRS Bandwidth Capability Exchange for Location Estimation
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently providing location estimation services for terminals, particularly in accurately determining the location using aggregated downlink positioning reference signals (DL-PRS).
Innovation Solution
The proposed solution involves a method and device that enable the effective use of aggregated DL-PRS by exchanging capability information between user equipment (UE) and a location management function (LMF) entity, including maximum aggregated DL-PRS bandwidth and the number of aggregated resources in a slot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If aggregated DL-PRS resources are used for location estimation, then location estimation accuracy is improved, but device complexity and processing requirements increase
Solution Approach 1:
The patent applies preliminary action by having the UE report its capability information (maximum aggregated DL-PRS bandwidth and maximum number of aggregated DL-PRS resources per slot) to the LMF entity in advance. This allows the LMF to plan and configure the aggregated DL-PRS resources appropriately before actual location estimation, reducing processing complexity during execution while maintaining high accuracy.
Solution Approach 2:
The patent implements dynamics by allowing the aggregation of multiple DL-PRS resources from different frequency layers and transmission reception points (TRPs) adaptively. The system dynamically selects and aggregates resources based on the UE's capability and channel conditions, optimizing the balance between location estimation accuracy and processing requirements.
2Measurement precision
If maximum aggregated DL-PRS bandwidth and resources are utilized, then location estimation accuracy is improved, but signal processing time and computational load increase
Solution Approach 1:
The patent reduces processing time by performing capability exchange and resource configuration in advance. The LMF entity receives the UE's capability information regarding maximum aggregated DL-PRS bandwidth and resources per slot, and configures the appropriate aggregation parameters before actual location estimation, avoiding complex real-time processing.
Solution Approach 2:
The patent applies partial action by aggregating only the necessary number of DL-PRS resources up to the UE's maximum capability per slot. Instead of always using maximum aggregation, the system selectively aggregates resources based on what is needed for accurate location estimation, reducing unnecessary processing load and time.
3Productivity
If capability information exchange is implemented, then resource optimization is improved, but communication overhead increases
Solution Approach 1:
The patent extracts only the essential capability information needed for DL-PRS aggregation optimization - specifically, the maximum aggregated DL-PRS bandwidth and maximum number of aggregated DL-PRS resources per slot. By extracting only these critical parameters rather than comprehensive UE capabilities, the patent minimizes signaling overhead while achieving effective resource optimization.
Data Source
AI summary
The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method performed by a user equipment (UE) in a wireless communication system is provided. The method includes receiving, from a location management function (LMF) entity, a request capabilities message, and transmitting, to the LMF entity, a provide capabilities message including capability information per band, wherein the capability information includes information on maximum aggregated downlink positioning reference signal (DL-PRS) bandwidth (BW) and information on maximum number of aggregated DL-PRS resources in a slot.