Component Carrier Spatial Relation Updates via Unified MAC CE
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in configuring spatial relations for multiple component carriers, leading to excessive network and power resource usage due to the transmission of multiple MAC CEs.
Innovation Solution
A base station groups component carriers and transmits a single indicator to update spatial relations across multiple component carriers, reducing the need for multiple MAC CEs and minimizing UE power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple MAC CEs are transmitted to configure spatial relations for multiple component carriers, then spatial relation configuration is achieved, but network resource usage and UE power consumption increase excessively
Solution Approach 1:
The patent combines multiple spatial relation configuration operations into a single MAC CE transmission. Instead of sending separate MAC CEs for each component carrier, the base station merges the configuration information into one unified MAC CE that contains spatial relation indicators for multiple component carriers, thereby reducing UE power consumption while maintaining configuration reliability
Solution Approach 2:
The MAC CE is designed with multi-functionality to handle spatial relation configuration across multiple component carriers simultaneously. The single MAC CE structure incorporates universal fields that can indicate spatial relations for different component carriers, allowing one message to perform multiple configuration functions rather than requiring separate dedicated messages for each carrier
2Reliability
If multiple MAC CEs are transmitted to configure spatial relations for multiple component carriers, then spatial relation configuration is achieved, but network resource usage increases excessively
Solution Approach 1:
The patent merges multiple spatial relation configuration operations into a single MAC CE transmission. Instead of sending separate MAC CEs for each component carrier, the base station combines the configuration information into one unified MAC CE, thereby reducing network resource usage while maintaining configuration reliability
Solution Approach 2:
The MAC CE structure is designed to be universal across multiple component carriers. It includes fields that can indicate spatial relations for different component carriers, allowing a single message to perform multiple configuration functions and reduce overall network resource consumption
3Productivity
If a single indicator is used to update spatial relations across multiple component carriers, then signaling and power consumption are reduced, but configuration complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the multiple component carriers into groups, where each group is associated with a specific spatial relation indicator. This segmentation approach allows the single MAC CE to efficiently manage multiple carriers without requiring complex individual configurations for each carrier, thereby reducing signaling overhead while keeping the configuration manageable through structured grouping
Data Source
AI summary
A method, an apparatus, and a computer program product for wireless communication are provided. A base station (BS) may configure a component carrier group for a user equipment (UE). The BS may provide an indication of a spatial relation for one or more sounding reference signals associated with a component carrier of the component carrier group. The UE may receive the indication and may apply the spatial relation to the one or more sounding reference signals across bandwidth parts of component carriers of the component carrier group.