Aperiodic SRS Transmission Slot Determination via Dynamic Offset
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Solution Overview
Problem
The existing method for determining the transmission slot for an aperiodic SRS in terminal devices is inflexible, as it relies on a fixed slot offset configured through RRC, lacking diversification in slot selection.
Innovation Solution
A method where a terminal device receives a control instruction containing a dynamic slot offset, allowing it to determine and transmit the aperiodic SRS at a dynamically indicated time-domain location, thereby enhancing flexibility and diversity in slot selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed slot offset configured through RRC is used to determine the transmission slot for aperiodic SRS, then the configuration is simple and consistent, but the flexibility and diversity in slot selection are limited
Solution Approach 1:
The patent segments the slot offset determination into two parts: a base slot offset configured through RRC and a dynamic offset indicated through DCI. This segmentation allows the system to maintain the simplicity of RRC configuration while adding flexibility through dynamic indications, resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The patent introduces dynamic slot offset indication through DCI format 2-4, which allows the slot offset to be adjusted dynamically based on current network conditions and requirements. This transforms the static slot offset configuration into a dynamic one, improving flexibility without significantly increasing overall system complexity.
2Adaptability or versatility
If a dynamic slot offset is introduced through DCI to improve slot selection flexibility, then the adaptability increases, but the control instruction complexity increases
Solution Approach 1:
The patent uses DCI format 2-4 as an intermediary to carry the dynamic slot offset indication. This intermediary structure allows the system to convey additional dynamic information without fundamentally changing the existing RRC configuration mechanism, thereby improving adaptability while managing control instruction complexity through a dedicated intermediate layer.
Solution Approach 2:
The patent changes the parameter representation by introducing a dynamic offset parameter in DCI that complements the base slot offset from RRC configuration. This parameter change approach allows flexible slot selection by combining static and dynamic parameters, improving adaptability while keeping the processing logic relatively simple through parameter composition.
Data Source
AI summary
A method for transmitting an aperiodic sounding reference signal (SRS) and related devices are disclosed in implementations of the disclosure. The method includes: receiving, by a terminal device, a first control instruction for triggering the terminal device to transmit the aperiodic SRS, the first control instruction containing a first parameter field and SRS resource set information, the first parameter field containing a first slot offset; and determining, by the terminal device, a time-domain location for transmitting the aperiodic SRS according to the first slot offset, and transmitting the aperiodic SRS according to the time-domain location determined.