Reference Object Group Resource Selection in 5G Terminals
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Solution Overview
Problem
In mobile communications systems, terminals face information transmission failures due to uncertainty in available transmission resources, particularly when they cannot select alternative resources after detecting a reference object, leading to potential unavailability of transmission resources.
Innovation Solution
The method involves obtaining a reference object group containing at least two quasi-co-located reference objects and using this group for information transmission, with the network device transmitting parameter information such as spatial, pattern, or index information to facilitate resource determination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a terminal selects transmission resources based on a single detected reference object, then the resource selection process is simple, but the transmission reliability deteriorates when the selected resource becomes unavailable
Solution Approach 1:
The patent combines multiple reference objects (SSBs or CSI-RS) into a reference object group, where the terminal determines transmission resources based on the group rather than a single reference object. This merging approach provides multiple candidate resources, improving transmission reliability when one resource becomes unavailable while maintaining relatively simple selection procedures.
Solution Approach 2:
The patent introduces dynamic resource selection by allowing the terminal to choose from multiple transmission resources associated with a reference object group. The terminal can dynamically select alternative resources based on current channel conditions and availability, transforming the static single-resource selection into a dynamic multi-resource selection process.
2Reliability
If a terminal monitors multiple reference objects to ensure resource availability, then the transmission reliability improves, but the complexity of the detection process increases
Solution Approach 1:
The patent segments the reference objects into groups based on quasi-co-location relationships, where reference objects within a group share similar channel characteristics. This segmentation allows the terminal to monitor multiple reference objects in an organized manner, improving resource availability determination while managing detection complexity through structured grouping.
Solution Approach 2:
The reference object group serves multiple functions: it provides multiple candidate transmission resources, enables diversity selection for improved reliability, and simplifies the overall selection process by treating the group as a single selectable entity. This multi-functionality addresses both reliability improvement and complexity management.
3Productivity
If transmission resources are tightly associated with specific downlink signals, then the resource allocation efficiency improves, but the adaptability deteriorates when resources are preempted or unavailable
Solution Approach 1:
The patent creates a dynamic association between reference object groups and transmission resources, allowing the terminal to adaptively select from multiple resources within a group. This dynamic relationship maintains efficient resource allocation by linking resources to reference objects while providing flexibility to switch between resources when conditions change, resolving the contradiction between efficiency and adaptability.
Data Source
AI summary
This disclosure discloses an information transmission method and a communications device. The method includes: obtaining a reference object group containing at least two reference objects, where the reference objects contained in the reference object group are quasi co-located; and performing information transmission based on the reference object group.