Active TCI States Limiting UE Beam Complexity
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Solution Overview
Problem
Conventional wireless communication systems face complexity issues in managing active beams between user equipment (UE) and base stations, as the number of active beams available for communication is not effectively limited, leading to increased complexity and potential management challenges for the UE.
Innovation Solution
The system introduces active transmission configuration indicator (TCI) states that limit the number of active beams by using configured quasi co-location (QCL) relationships and QCL assumptions, allowing the UE to identify suitable beams for communication, thereby reducing complexity by limiting the number of active beams available for downlink reception based on UE capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of active beams is not limited, then the UE can identify more suitable beams for communication, but the complexity at the UE increases
Solution Approach 1:
The patent changes the parameter of beam management by introducing TCI states as a limiting mechanism. Instead of allowing unlimited active beams, the system parameterizes beam selection through configured TCI states, where the number of active beams is controlled by UE capability indicators and network configuration, thereby reducing UE complexity while maintaining adequate beam selection for communication needs
2Device complexity
If the number of active beams is limited, then the UE complexity is reduced, but the available beams for communication decrease
Solution Approach 1:
The patent implements dynamic beam management through TCI states that can be activated or deactivated based on communication conditions. The network can dynamically configure which TCI states are active, allowing the system to adapt beam availability to current communication needs while maintaining a limited set of manageable beams, thus balancing complexity reduction with adequate beam availability
3Productivity
If TCI states are used to limit active beams, then beam management efficiency improves, but the configuration complexity increases
Solution Approach 1:
The patent introduces TCI states as an intermediary mechanism between the network and UE beam management. The TCI states serve as a standardized configuration structure that mediates beam selection, allowing the network to efficiently control active beams through configured QCL relationships and assumptions, thereby improving management efficiency while keeping configuration complexity manageable through standardized procedures
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AI summary
Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for limiting a number of active beams available for communications between a user equipment (UE) and a base station (e.g., to limit the complexity at the UE). In one example, transmission configuration indication (TCI) states may correspond to active beams available for downlink reception that are identified based on configured quasi co-location (QCL) relationships and active QCL assumptions (i.e., the TCI states may include configured QCL relationships and QCL assumptions). Because the TCI states may include configured QCL relationships and active QCL assumptions, the number of active beams available for communications between a UE and a base station may be limited by the number of active TCI states (e.g., where the number of active TCI states may be determined based on a UE capability).