Terminal In-Device Coexistence Interference Sub-Band Reporting
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Solution Overview
Problem
Current methods for indicating in-device coexistence interference in electronic devices, particularly with 5G NR, fail to accurately determine the specific frequency band causing or suffering interference due to large bandwidths, as they only report carrier frequencies to base stations.
Innovation Solution
A method where a terminal determines in-device coexistence interference and sends both the carrier frequency and sub-band information to a base station, allowing the base station to identify the specific sub-band causing or suffering interference, thereby enabling precise interference resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only carrier frequency is reported to the base station, then the reporting method is simple, but the base station cannot accurately determine the specific frequency band in the carrier that causes or suffers interference
Solution Approach 1:
The patent segments the carrier frequency information into two levels: carrier frequency (coarse granularity) and sub-band frequency (fine granularity). The terminal reports both the carrier frequency and the specific sub-band frequency where interference occurs, enabling the base station to precisely locate the interference source within the carrier spectrum.
Solution Approach 2:
The patent adds an additional dimension of information reporting by including sub-band frequency alongside carrier frequency. This transforms the reporting from a single-dimensional carrier level to a two-dimensional structure (carrier frequency + sub-band frequency), providing more precise interference localization without sacrificing simplicity.
2Measurement precision
If detailed sub-band information is reported, then the base station can accurately identify interference, but the reporting complexity increases
Solution Approach 1:
The patent segments interference information reporting into hierarchical levels: carrier frequency reporting and sub-band frequency reporting. This segmentation allows the system to provide detailed information when needed while maintaining a structured, manageable reporting framework that doesn't overwhelm the base station with undifferentiated data.
Solution Approach 2:
The patent applies local quality by reporting detailed sub-band frequency information only for the specific carrier experiencing interference, rather than reporting all possible frequency details across all carriers. This localized detailed reporting reduces overall reporting complexity while maintaining high accuracy where it matters most.
Data Source
AI summary
A method for indicating in-device coexistence interference is provided. The method includes that: a terminal determines that in-device coexistence interference exists or is to occur in the terminal; and the terminal sends a carrier frequency of a carrier that causes or suffers interference, and information of a sub-band in the carrier that causes or suffers interference, to a base station, where the carrier includes at least one sub-band.