Reduced Capability UE Frequency Hopping TCI State Association
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Solution Overview
Problem
Reduced capability UEs in wireless communication systems face performance loss due to persistent interference and delayed dynamic beam assignment, which affects their ability to switch between frequency hopping regions efficiently.
Innovation Solution
The system enables reduced capability UEs to associate and apply different transmission configuration indications (TCI) states and spatial relations with respective hopping regions, allowing them to switch to new frequency ranges without waiting for dynamic scheduling, thereby reducing delays and improving communication efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If reduced capability UEs wait for dynamic scheduling to switch between frequency hopping regions, then beam assignment accuracy is improved, but communication delay increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple TCI states and spatial relations at the UE before frequency hopping occurs. The network configures a set of TCI states corresponding to different frequency hopping regions, and the UE prepares multiple spatial relations in advance. When frequency hopping occurs, the UE can immediately switch to the pre-configured spatial relation for the target frequency region without waiting for dynamic scheduling, thus resolving the contradiction between beam assignment accuracy and communication delay.
2Reliability
If reduced capability UEs use persistent interference mitigation techniques, then communication reliability is improved, but performance loss due to interference increases
Solution Approach 1:
The patent applies local quality by associating different TCI states with different frequency hopping regions, where each TCI state is optimized for the specific interference characteristics of its corresponding frequency region. The UE applies the appropriate TCI state and spatial relation locally to each frequency region it hops to, rather than using a single universal configuration. This allows the system to maintain high reliability in each local frequency region while preserving overall communication efficiency through frequency diversity.
3Adaptability or versatility
If reduced capability UEs switch frequency ranges dynamically, then adaptability to interference patterns is improved, but complexity of beam management increases
Solution Approach 1:
The patent reduces beam management complexity by having the network pre-configure all necessary TCI states and spatial relations for multiple frequency hopping regions before the UE begins frequency hopping. The network provides a mapping between frequency regions and their corresponding TCI states/spatial relations in advance. This preliminary configuration allows the UE to simply switch between pre-configured parameters during frequency hopping without performing complex real-time beam management, thus maintaining high adaptability while reducing device complexity.
Data Source
AI summary
Apparatus, methods, and computer-readable media for facilitating per bandwidth part TCI state or spatial relation are disclosed herein. For example, aspects disclosed herein provide techniques for enabling a UE (e.g., a reduced capability UE) to associate at least one of a TCI state or a spatial relation with respective hopping regions. An example method for wireless communication at a UE includes determining, while communicating using a first frequency range comprising a first set of frequency hops, at least one of a TCI state or a spatial relation for communicating using a second frequency range comprising a second set of frequency hops. The example method also includes communicating, after switching communication from the first frequency range to the second frequency range, using the second frequency range based on the determined at least one of the TCI state or the spatial relation.