Cross-Sector Channel Profiling for UE Positioning Near Sector Edges
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Solution Overview
Problem
Existing wireless positioning technologies face challenges in accurately determining the location of user equipment near sector edges due to insufficient joint processing of channel information from multiple sectors, leading to increased report overhead and reduced positioning accuracy.
Innovation Solution
Jointly process channel information from multiple sectors at the base station, generating a cross-sector time-angle channel profile, and transmitting this profile to a location server for improved positioning accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If per-sector positioning features are supported at the gNB level, then positioning capability and flexibility are improved, but network complexity and deployment difficulty increase
Solution Approach 1:
The patent segments positioning feature support from gNB-level to sector-level granularity. Each sector within a gNB can independently support or not support positioning features, allowing selective deployment. This is achieved through sector-specific positioning feature indication fields in signaling messages, enabling fine-grained control over positioning capability distribution across the network.
Solution Approach 2:
The patent introduces intermediate signaling mechanisms (positioning feature indication fields in RRC messages and downlink positioning reference signal configurations) that mediate between gNB-level positioning capability and sector-level positioning execution. These intermediaries enable precise control of positioning features at the sector level while maintaining gNB-level coordination, thus reducing overall network complexity.
2Area of stationary object
If positioning features are deployed across multiple sectors, then positioning coverage is improved, but deployment complexity increases
Solution Approach 1:
The patent enables dynamic configuration of positioning features across different sectors. Each sector can independently enable or disable positioning features based on deployment requirements, traffic conditions, and coverage needs. This dynamic control is achieved through sector-specific indication fields that allow flexible activation/deactivation of positioning functionality without requiring uniform deployment across all sectors.
Solution Approach 2:
The patent allows different sectors to have different positioning feature configurations tailored to local requirements. Each sector can be configured with appropriate positioning reference signals and features based on its specific coverage area, interference conditions, and deployment scenario. This local optimization simplifies deployment by allowing targeted positioning feature rollout rather than network-wide uniform configuration.
3Measurement precision
If per-sector positioning control is implemented, then positioning accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent implements partial positioning control at the sector level rather than full per-sector configuration. Sector-level indication fields provide coarse-grained control over positioning feature activation, reducing signaling overhead compared to fully detailed per-sector configuration. This partial action approach maintains positioning accuracy by enabling sector-level selection of positioning features while avoiding the overhead of configuring every parameter at the sector level.
Data Source
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AI summary
A method of wireless communication by a base station, jointly processes channel information associated with a user equipment, UE, in order to generate a jointly processed report. The channel information is collected from collocated transmit and receive points, TRPs (604, t1, t2, t3), of the base station. The base station transmits (t5) the jointly processed (t4) report to a location server (112).