RedCap Terminal Frequency Hopping for Wideband Positioning
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Solution Overview
Problem
The accuracy of positioning using reference signals is reduced for Reduced Capability (RedCapUE) due to its narrowband operation in NR wireless communication systems.
Innovation Solution
Implementing frequency hopping outside or inside the Bandwidth Part (BWP) for positioning signals, allowing terminals to receive and transmit information related to positioning, thereby enhancing the bandwidth utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If RedCapUE uses narrowband operation to reduce complexity and cost, then device complexity is reduced, but positioning accuracy deteriorates
Solution Approach 1:
The patent applies frequency hopping to positioning reference signals, allowing the signal to dynamically switch between different frequency locations (inside or outside BWP) rather than remaining static. This dynamic frequency variation enables narrowband devices to access wideband positioning resources, improving positioning accuracy without increasing device complexity
Solution Approach 2:
The patent introduces frequency dimension expansion by allowing positioning signals to hop outside the current BWP boundaries. This dimensional expansion in the frequency domain enables narrowband RedCapUE to effectively utilize wideband resources for positioning, resolving the contradiction between narrowband operation and positioning accuracy
2Measurement precision
If frequency hopping outside BWP is applied to positioning signals, then positioning accuracy is improved, but device complexity increases
Solution Approach 1:
The patent configures the frequency hopping behavior through higher-layer signaling (RRC configuration) that provides hopping patterns, bandwidth information, and resource allocation. The terminal autonomously applies these configurations without requiring complex real-time processing or additional hardware capabilities, enabling wideband positioning through self-service mechanisms
Data Source
AI summary
A terminal includes a control unit configured to assume frequency hopping outside a Bandwidth Part (BWP) or frequency hopping inside the BWP to be applied to a signal related to positioning; a reception unit configured to receive the signal related to positioning from the base station by applying the frequency hopping outside the BWP or the frequency hopping inside the BWP; and a transmission unit configured to transmit, to the base station, information including a result of measuring the signal related to the positioning.