Full-Duplex UE Assistance Information for Self-Interference Management
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Solution Overview
Problem
Current 5G NR communication systems face challenges in managing self-interference and optimizing FD operation, particularly in determining effective self-interference cancellation techniques and resource allocation for full-duplex communication, which affects error rates and overall communication efficiency.
Innovation Solution
A method where a UE determines and transmits FD UE assistance information, including parameters such as favored self-interference cancellation methods, desired resource overlaps, and power adjustments, to a base station, facilitating improved FD communication by establishing an RRC reconfiguration procedure based on error rates and resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex communication is implemented to improve spectral efficiency, then communication capacity increases, but self-interference between simultaneous transmissions deteriorates signal quality
Solution Approach 1:
The patent converts the harmful self-interference into a useful measurement tool by having the UE report interference levels and characteristics to the base station. This feedback mechanism allows the system to identify and mitigate self-interference effects while maintaining full-duplex operation, thus transforming the harmful interference into beneficial information for system optimization.
Solution Approach 2:
The patent implements a feedback mechanism where the UE measures and reports self-interference characteristics to the base station. This feedback loop enables the base station to adjust resource allocation, power control, and scheduling decisions to mitigate self-interference while maintaining high spectral efficiency, thus resolving the contradiction between full-duplex capacity and interference management.
2Reliability
If additional FD UE assistance information parameters are transmitted to improve self-interference management, then communication reliability improves, but signaling overhead increases
Solution Approach 1:
The patent applies local quality by having the UE report only specific, relevant self-interference parameters rather than comprehensive channel state information. The base station requests only the assistance information needed for FD operation optimization, reducing signaling overhead while maintaining reliability through targeted parameter reporting.
Solution Approach 2:
The patent uses partial action by implementing optional FD UE assistance information reporting based on specific conditions (e.g., when FD operation is detected, when interference thresholds are exceeded). This conditional reporting reduces unnecessary signaling overhead while ensuring reliability is maintained when it matters most.
Data Source
AI summary
The apparatus, in some aspects may be a UE configured to communicate, in a FD mode, with at least one base station. The UE may further be configured to determine, when communicating with the at least one base station in the FD mode, FD UE assistance information including one or more FD UE assistance parameters. The UE may also be configured to transmit, to the at least one base station, an indication of the determined FD UE assistance information including the one or more FD UE assistance parameters. In some aspects, the apparatus may be a base station configured to communicate with at least one UE operating in a FD mode. The base station may further be configured to receive, from the at least one UE, an indication of FD UE assistance information including one or more FD UE assistance parameters.