Simultaneous Beam Update Across Component Carriers
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently updating beam-related information across multiple component carriers (CCs) in 5G networks, which affects communication performance and reliability.
Innovation Solution
A method and apparatus for a user equipment (UE) to selectively apply transmission configuration indication (TCI) state identifiers and spatial relation information received via a medium access control-control element (MAC-CE) to either a single component carrier or multiple component carriers, based on configuration and identification of the component carriers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam-related information is updated across multiple component carriers using existing methods, then communication reliability is improved, but system complexity and overhead increase
Solution Approach 1:
The patent applies universality by enabling a single MAC-CE message to update beam-related information (TCI states and spatial relation information) across multiple component carriers simultaneously. This multi-functional approach allows one control element to serve multiple carriers, reducing the number of separate update operations needed and thereby lowering system complexity while maintaining communication reliability across all carriers
2Manufacturing precision
If separate beam updates are performed for each component carrier, then configuration precision is maintained, but signaling overhead and update time increase
Solution Approach 1:
The patent merges the beam update process across multiple component carriers by applying the same TCI states and spatial relation information from a single MAC-CE message to all configured carriers simultaneously. This combining approach maintains configuration precision through unified control while significantly reducing update time compared to sequential per-carrier updates
3Measurement precision
If multiple MAC-CE messages are used to update beam information on multiple carriers, then configuration accuracy is improved, but signaling overhead increases
Solution Approach 1:
The patent achieves universal application of beam configuration by designing the MAC-CE message to carry TCI states and spatial relation information that can be applied to multiple component carriers in one transmission. This eliminates the need for multiple separate MAC-CE messages, maintaining configuration accuracy through unified signaling while reducing overall signaling overhead
Data Source
AI summary
Aspects relate to wireless communication on multiple component carriers. In some examples, a user equipment (UE) may selectively apply transmission configuration indicator (TCI) information and/or spatial relation information received via a medium access control-control element (MAC-CE) to component carriers. In some examples, a UE may apply the TCI information and/or spatial relation information included in a MAC-CE to multiple component carriers if the UE has been configured with a list that includes the component carriers (and, optionally, if a component carrier identified by the MAC-CE is a member of the list of component carriers). If the above condition is (or conditions are) not met, the UE applies the TCI information and/or spatial relation information included in the MAC-CE to the component carrier identified by the MAC-CE.