Uplink Scheduling with Grouped SRS Resources for Multi-Panel UEs
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Solution Overview
Problem
Existing uplink scheduling methods in mobile communication limit the flexibility and performance due to the inability of base stations to indicate uplink scheduling information independently for each antenna panel of a User Equipment (UE), restricting simultaneous data transmission from multiple antenna panels.
Innovation Solution
The base station instructs the UE to send Sounding Reference Signals (SRSs) corresponding to multiple groups of SRS resources, determines and sends independent uplink scheduling information for each group, and provides correspondence information to enable flexible and efficient uplink signal transmission using multiple antenna panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the base station sends a group of uplink scheduling information that corresponds to one SRS resource set, then the signaling overhead is reduced, but the flexibility of uplink scheduling is limited
Solution Approach 1:
The patent segments the single group of uplink scheduling information into multiple groups, where each group corresponds to a different SRS resource set. This allows the base station to independently indicate scheduling information for each antenna panel or SRS resource group, thereby improving uplink scheduling flexibility while managing signaling overhead through structured organization of the segmented information.
2Device complexity
If the base station cannot indicate uplink scheduling information independently for each antenna panel, then the device complexity is reduced, but the uplink transmission performance is limited
Solution Approach 1:
The patent divides uplink scheduling information into multiple groups, with each group associated with specific antenna panels or SRS resource sets. This segmentation enables the base station to manage complexity by organizing scheduling information in a structured manner while still providing independent indication for each antenna panel, thereby improving uplink transmission performance without excessively increasing device complexity.
Solution Approach 2:
The patent introduces a new dimension of organization by associating scheduling information groups with specific SRS resource sets and antenna panels. This dimensional organization allows the base station to efficiently manage multiple antenna panels through a systematic approach, improving uplink transmission performance while keeping processing complexity manageable through the structured framework.
3Productivity
If the UE uses multiple antenna panels for simultaneous data transmission, then the uplink data rate is improved, but the requirement for independent scheduling information increases signaling overhead
Solution Approach 1:
The patent segments uplink scheduling information into multiple groups, where each group can be independently applied to different antenna panels or SRS resource sets. This segmentation enables the UE to use multiple antenna panels for simultaneous data transmission with improved uplink data rate, while the structured organization of segmented scheduling information helps manage signaling overhead efficiently.
Data Source
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AI summary
The present invention provides an uplink transmission method and apparatus, for use in improving the flexibility of uplink scheduling. The method comprises: a base station instructs a UE to send SRSs corresponding to N groups of SRS resources, each of the N groups of SRS resources comprising one or more SRS resources; N being a positive integer; the base station receives the SRSs sent by the UE to determine X groups of uplink scheduling information, each of the X groups of uplink scheduling information corresponding to one group of SRS resources in the N groups of SRS resources; uplink scheduling information in different groups corresponding to SRS resources in different groups; X being a positive integer greater than one and not greater than N; the base station sends the determined X groups of uplink scheduling information to the UE so that the UE transmits an uplink signal according to the X groups of uplink scheduling information.