5G Positioning with Reliable Integer Ambiguity Resolution
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Solution Overview
Problem
Existing positioning technologies in 5G networks face challenges in achieving high-precision positioning, particularly in scenarios like eMBB indoor and URLLC, due to limitations in accurately determining integer ambiguities in measurement parameters such as AOA, TDOA, and RTT.
Innovation Solution
A method and apparatus that determine integer ambiguities and assess their reliability using first and second measurement information, including time and carrier phase measurements, to improve positioning accuracy by selecting the most reliable ambiguities for precise location determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If integer ambiguity is determined based on measurement information, then positioning accuracy is improved, but reliability of the integer ambiguity determination deteriorates
Solution Approach 1:
The patent applies feedback by obtaining second measurement information and using it to assess the reliability of the determined integer ambiguity. The reliability assessment feeds back into the positioning process, allowing the system to determine whether the integer ambiguity can be reliably used for positioning or if additional processing is needed. This feedback mechanism resolves the contradiction by enabling the system to maintain high positioning accuracy while explicitly evaluating and communicating the reliability of the ambiguity determination.
Solution Approach 2:
The patent changes the parameter state by introducing a reliability indicator that transforms the integer ambiguity from a simple measurement value to a structured data element with associated confidence information. This parameter change allows the system to simultaneously achieve high measurement precision for positioning while providing reliability assessment, thereby resolving the contradiction between accuracy and reliability.
2Measurement precision
If multiple measurement technologies are used to improve positioning accuracy, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by creating a unified positioning framework that can handle multiple measurement technologies (carrier phase, TDOA, AOA, TOA, RTT) through a common processing architecture. The system uses a single reliability assessment mechanism that works across different measurement types, and a unified integer ambiguity determination process that consolidates multiple measurement sources. This multi-functional approach improves positioning accuracy while avoiding the complexity of separate processing systems for each measurement technology.
Solution Approach 2:
The patent merges multiple measurement information sources and processing functions into an integrated system. By combining carrier phase measurement, time measurement, and reliability assessment into a unified processing flow, the system achieves high positioning accuracy without requiring separate complex subsystems for each measurement type. The merged architecture shares common resources and processing logic, thereby reducing overall device complexity while maintaining improved positioning performance.
Data Source
AI summary
A positioning method, an apparatus, a system, and a storage medium are provided to improve positioning accuracy. In this application, a first apparatus determines a first integer ambiguity based on first measurement information. The first measurement information includes time measurement information and/or carrier phase measurement information. The first measurement information is obtained by measuring at least one first reference signal. The first apparatus can further obtain first information. The first information indicates reliability of the first integer ambiguity. Because the first information indicates reliability of the first integer ambiguity, positioning accuracy can be improved by performing positioning based on the first information and the first integer ambiguity.