Terminal DRX Timing for CSI and SRS Reporting
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Solution Overview
Problem
In Discontinuous Reception (DRX) scenarios, terminal devices face challenges in determining whether to report Channel State Information (CSI) and Sounding Reference Signal (SRS) due to sudden changes in active time, leading to potential failures in reporting during configured times or continued reporting during inactive times.
Innovation Solution
A method where the terminal device receives first information to determine whether to report CSI and/or SRS at a later time unit, based on scheduling timing and ACK/NACK feedback sequences, ensuring it is within active or inactive DRX time, allowing sufficient time for synchronization and accurate reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the terminal device uses Discontinuous Reception (DRX) to save energy, then energy consumption is reduced, but the terminal device may not have sufficient time to determine whether to report CSI and/or SRS when active time is prolonged or stopped due to burst information
Solution Approach 1:
The terminal device performs preliminary determination of CSI and SRS reporting requirements before the active time expires. By calculating the timing relationship between the received burst information and the scheduled reporting time, the device can proactively decide whether to report, ensuring sufficient processing time while maintaining DRX energy savings.
2Reliability
If the terminal device prolongs active Time due to burst information, then data transmission is ensured, but the terminal device may have insufficient time to determine whether to report CSI and/or SRS
Solution Approach 1:
The terminal device calculates the timing relationship between burst information reception and scheduled reporting time in advance. If the active time extension would cause insufficient processing time, the device determines the reporting decision preliminarily, ensuring both reliable data transmission and adequate time for CSI/SRS reporting determination.
3Stability of the object's composition
If the terminal device reports CSI and/or SRS during inactive Time, then reporting continuity is maintained, but energy efficiency is reduced
Solution Approach 1:
The terminal device dynamically adjusts its reporting behavior based on the actual active time status. By continuously monitoring whether the current time falls within active or inactive periods and adjusting the reporting decision accordingly, the device maintains reporting continuity when appropriate while preserving energy efficiency during inactive times.
Data Source
AI summary
A method for transmitting information and a terminal device are disclosed by the embodiments of the present application, where the method includes: receiving, by a terminal device, first information transmitted by a network device at an nth time unit, or transmitting, by the terminal device, the first information to the network device at the nth time unit, where the first information is used to indicate prolonging or stopping of an active Time of DRX; determining, by the terminal device, whether to report CSI and/or SRS to the network device at an (n+m+q)th time unit, where m is determined based on a scheduling timing sequence set and/or an ACK/NACK feedback timing sequence set, and the scheduling timing sequence set and the ACK/NACK feedback timing sequence set respectively comprise multiple values, where q is any integer greater than or equal to 0.