SRS Resource Set Configuration for Multi-TRP DCI Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing and configuring sounding reference signal (SRS) resource sets across different downlink control information (DCI) formats, leading to increased complexity and potential network congestion in multi-TRP (transmit-receive point) communications.
Innovation Solution
The method involves configuring mobile stations and base stations to receive and transmit SRS resource sets associated with specific DCI formats, allowing for separate management of SRS resource sets for different DCI formats, such as DCI format 0_1 and DCI format 0_2, where at least one set includes multiple SRS resource sets, and determining the order of uplink communications based on the lowest SRS resource set identifier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If separate configuration of SRS resource sets for different DCI formats is implemented, then device complexity is reduced, but signaling overhead increases
Solution Approach 1:
The patent segments the SRS resource set configuration by associating different sets of SRS resource sets with different DCI formats (e.g., first set with DCI format 0_1, second set with DCI format 02). This segmentation allows the mobile station to handle scheduling differently based on DCI format, reducing overall processing complexity while the configuration is conveyed through compact indicator fields in the DCI messages themselves, minimizing additional signaling overhead.
2Reliability
If multiple SRS resource sets are configured for multi-TRP communications, then communication reliability is improved, but network congestion increases
Solution Approach 1:
The patent implements dynamic selection and activation of specific SRS resource sets based on the received DCI format and triggering conditions. Rather than continuously utilizing all configured SRS resource sets, the system dynamically activates only the necessary subsets for each scheduling instance, thereby maintaining high communication reliability through multiple configured sets while reducing actual resource usage and network congestion.
3Productivity
If SRS resource sets are associated with specific DCI formats, then resource management efficiency is improved, but configuration complexity increases
Solution Approach 1:
The patent enables the DCI formats themselves to carry indicators that directly reference the associated SRS resource sets. This self-service mechanism allows the configuration to be conveyed within the existing DCI structure without requiring separate dedicated configuration messages, thereby improving resource management efficiency while keeping the configuration complexity manageable through reuse of existing signaling fields.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may receive configuration information indicating sounding reference signal (SRS) resource sets, the configuration information indicating: a first set of SRS resource sets, of the SRS resource sets, associated with a first downlink control information (DCI) format, and a second set of SRS resource sets, of the SRS resource sets, associated with a second DCI format, wherein at least one of the first set or the second set comprises at least two of the SRS resource sets. The mobile station may transmit, based at least in part on the configuration information, at least one uplink communication using at least one SRS resource of at least one of the SRS resource sets of at least one of the first set or the second set. Numerous other aspects are described.