Inter-UE Sidelink Coordination Using Adaptive SCI and MAC CE Containers
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Solution Overview
Problem
Existing methods for transmitting and receiving inter-UE coordination information in sidelink communication are not clearly defined, leading to inefficiencies in resource selection and communication performance.
Innovation Solution
A method for generating and transmitting inter-UE coordination information using different types of containers (first stage SCI, second stage SCI, MAC control element, and physical sidelink feedback channel) based on the type of resource set, allowing UEs to identify and utilize preferred, non-preferred, or conflicting resources for efficient sidelink communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If inter-UE coordination information is transmitted using a single fixed method, then the transmission process is simple, but the adaptability to different resource set types is poor
Solution Approach 1:
The patent implements dynamic selection of transmission methods based on resource set type. The transmitting UE determines whether to use SCI or MAC CE format by checking the resource set type (type A, B, or C), allowing the system to adapt flexibly to different scenarios rather than using a fixed transmission method
Solution Approach 2:
The patent changes the transmission format parameter based on the resource set type. When resource set type is A or B, MAC CE format is used; when type is C, SCI format is used. This parameter change approach enables the system to optimize transmission for each specific resource set type
2Measurement precision
If inter-UE coordination information is transmitted using multiple different containers based on resource set type, then the precision of resource selection is improved, but the complexity of transmission scheme determination increases
Solution Approach 1:
The patent segments the transmission method into different paths based on resource set type. Type A and B resource sets use MAC CE format with specific field structures, while type C uses SCI format with different field arrangements. This segmentation allows precise optimization for each resource set category
Solution Approach 2:
The patent performs preliminary determination of the transmission scheme before actual information transmission. The UE checks the resource set type in advance and selects the appropriate format (SCI or MAC CE) beforehand, which streamlines the subsequent transmission process and reduces real-time decision complexity
3Productivity
If inter-UE coordination information is transmitted without clear method definition, then the system is easy to implement, but the communication efficiency deteriorates
Solution Approach 1:
The patent defines clear parameter-based transmission rules where the resource set type parameter directly determines the transmission format. This clear definition enables efficient communication by eliminating ambiguity in transmission method selection while maintaining implementability through straightforward parameter checking
Solution Approach 2:
The patent incorporates feedback mechanisms where the receiving UE identifies the container type and processes the inter-UE coordination information accordingly. This feedback loop ensures that both transmitting and receiving UEs are synchronized on the transmission method, improving communication efficiency through clear protocol adherence
Data Source
AI summary
A method of a first UE may include: generating inter-UE coordination information including a resource set; determining a transmission scheme of the inter-UE coordination information based on a type of the resource set; and transmitting a container including the inter-UE coordination information to a second UE based on the transmission scheme, in which the container varies depending on the transmission scheme.