UE Full Duplex Capability Reporting by Transmission Power
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Solution Overview
Problem
Current wireless communication systems face challenges in managing finite wireless channel resources due to signal attenuation and blocking in complex environments, leading to sub-optimal performance in full duplex (FD) communications, as UE typically reports a single FD capability regardless of transmission power levels.
Innovation Solution
A method where user equipment (UE) reports its capability to support full duplex communications as a function of transmission power, allowing the network entity to set optimal parameters based on the current power level, thereby improving FD usage efficiency, throughput, and coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single FD capability is reported regardless of transmission power levels, then the reporting mechanism is simple, but the performance in FD communications is sub-optimal
Solution Approach 1:
The patent segments the FD capability reporting into multiple power level-specific capability indicators. Instead of reporting a single aggregate capability, the UE reports separate capability values for different transmission power levels (e.g., first power level, second power level, third power level). This segmentation allows the network to select appropriate capabilities based on actual power conditions, resolving the contradiction between simple reporting and optimal performance.
Solution Approach 2:
The patent introduces dynamic capability reporting where the FD capability indicators are adjusted based on transmission power levels. The network can dynamically select which capability indicator to use based on the current power level, making the system adaptive to changing conditions. This dynamic approach improves FD communications performance without requiring a completely complex static structure.
2Reliability
If transmission power is increased to overcome signal attenuation, then coverage is improved, but self-interference in full duplex mode increases
Solution Approach 1:
The patent changes the parameter of capability indication based on power level. By reporting separate FD capability indicators for different power levels, the system can select appropriate capabilities that account for self-interference characteristics at each power level. This allows the network to operate at higher power levels when needed while using capability indicators that reflect the actual interference conditions, thus maintaining reliability without being overly constrained by worst-case interference scenarios.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for a method for wireless communications by a user equipment (UE), comprising generating a report indicating a capability of the UE to perform full duplex (FD) communications dependent on transmission power level and transmitting the report to a network entity.