Terminal Aperiodic SRS Transmission Control via Dynamic DCI Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In next-generation mobile communication systems, particularly in NR, the lack of flexible control over SRS transmission leads to inefficiencies in resource use, communication throughput, and quality.
Innovation Solution
A terminal and radio communication method that includes a reception section for receiving configuration indicating uplink and downlink periods and slot offsets for aperiodic SRS transmission, and a control section to determine the receipt of downlink control information triggering SRS transmission and slot formats, enabling flexible control of SRS transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If SRS transmission is not flexibly configured, then the system structure is simple, but resource use efficiency and communication throughput are degraded
Solution Approach 1:
The patent implements dynamic control of SRS transmission by enabling the terminal to selectively receive and process different types of downlink control information (first DCI for SRS triggering, second DCI for slot format) based on configured parameters. This dynamic mechanism allows the system to adapt SRS transmission timing and configuration according to actual communication needs, resolving the contradiction between flexibility and complexity.
Solution Approach 2:
The patent utilizes parameter changes by configuring the terminal with specific parameters including uplink period, downlink period, and slot offset values. These parameters enable the terminal to dynamically determine when to receive SRS triggering information and when to receive slot format information, providing flexible control over SRS transmission timing while maintaining manageable system complexity through structured parameter management.
2Adaptability or versatility
If SRS transmission is not flexibly controlled, then the control mechanism is simple, but communication quality is degraded
Solution Approach 1:
The patent implements a feedback mechanism where the terminal receives downlink control information, processes the SRS triggering signals and slot format indications, and accordingly adjusts its transmission timing and configuration. This feedback loop enables the system to adapt to changing communication conditions and maintain high communication quality through continuous adjustment based on received control signals.
Solution Approach 2:
The patent applies preliminary action by having the terminal pre-configure and store uplink period, downlink period, and slot offset parameters before actual SRS transmission occurs. This preliminary configuration allows the terminal to efficiently process downlink control information and determine appropriate transmission timing without complex real-time calculations, thereby maintaining communication quality while reducing processing complexity.
3Productivity
If SRS transmission timing is fixed, then the system is simple to implement, but resource use efficiency is low
Solution Approach 1:
The patent segments the downlink control information into distinct types: first downlink control information for SRS triggering and second downlink control information for slot format indication. This segmentation allows the terminal to process each type of information separately using dedicated parameters (uplink period, downlink period, slot offset), thereby improving resource use efficiency while keeping the control mechanism relatively simple through structured information separation.
Data Source
AI summary
A terminal according to an aspect of the present disclosure includes: a reception section that receives a configuration indicating an uplink period and a downlink period and receives a slot offset for aperiodic sounding reference signal (SRS) transmission; and a control section that determines whether or not to receive at least one of a first piece of downlink control information that triggers the SRS transmission and a second piece of downlink control information indicating a slot format. According to an aspect of the present disclosure, SRS transmission is flexibly controlled.