Sidelink Transmission Control for DRX Reliability
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Solution Overview
Problem
The introduction of discontinuous reception (DRX) and partial sensing mechanisms in new radio sidelink technologies leads to periods where channels or signals cannot be sent or received, affecting transmission reliability by causing packet losses and inaccurate channel occupancy calculations.
Innovation Solution
A transmission control method that schedules or configures associated resources within active or inactive times of a configuration, ensuring consistent transmission and improving reliability by managing resource selection and timing to avoid periods where resources are not available for transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If discontinuous reception mechanism is introduced to save power, then energy consumption is reduced, but transmission reliability deteriorates due to packet losses during inactive periods
Solution Approach 1:
The patent applies preliminary action by proactively identifying resources that fall within inactive periods before transmission occurs. The terminal calculates the inactive period based on DRX configuration parameters (onDurationTimer, drx-InactivityTimer, drx-RetransmissionTimer, drx-ULRetransmissionTimer, and drx-LongCycleStartOffset) and excludes these pre-identified resources from the candidate resource set, thereby preventing transmission failures before they happen.
Solution Approach 2:
The patent implements dynamics by making the resource selection process adaptive to the terminal's active and inactive periods. The terminal dynamically adjusts the candidate resource set based on its DRX state, ensuring that resources are selected only when the terminal is in an active state capable of receiving or transmitting data, thus resolving the contradiction between power saving and transmission reliability.
2Device complexity
If partial sensing mechanism is introduced to reduce complexity, then device complexity is reduced, but transmission reliability deteriorates due to unavailable sensing windows
Solution Approach 1:
The patent applies preliminary action by pre-calculating and excluding resources that fall within inactive periods or partial sensing windows from the candidate resource set. This proactive identification prevents the terminal from selecting resources that would be unavailable due to the partial sensing mechanism, thereby maintaining transmission reliability while preserving the complexity-reducing benefits of partial sensing.
Solution Approach 2:
The patent implements dynamics by adapting the resource selection to the terminal's sensing schedule. The terminal dynamically adjusts its resource selection based on when sensing is and is not performed, ensuring that transmissions are scheduled only during periods when the terminal is actively sensing or when resources have been pre-validated as available.
3Device complexity
If random selection is introduced to simplify resource allocation, then device complexity is reduced, but transmission reliability deteriorates due to unavailable resources during inactive periods
Solution Approach 1:
The patent applies preliminary action by pre-identifying and excluding resources that fall within inactive periods from the candidate resource set before random selection is performed. This ensures that the random selection process only chooses from resources that are guaranteed to be available, thereby maintaining transmission reliability while preserving the simplicity of random selection.
Solution Approach 2:
The patent implements dynamics by making the candidate resource set adaptive to the terminal's active and inactive periods. The terminal dynamically adjusts which resources are eligible for random selection based on its DRX state, ensuring that random selection only picks from resources available during active periods, thus resolving the contradiction between simplicity and reliability.
4Use of energy by moving object
If channels or signals are not sent or received during inactive periods to save power, then energy consumption is reduced, but measurement precision deteriorates due to unavailable channel state information
Solution Approach 1:
The patent applies preliminary action by proactively identifying resources that fall within inactive periods and excluding them from the candidate resource set. This prevents the terminal from attempting to transmit or measure on resources when it is in an inactive state, thereby ensuring that all measurements and transmissions occur during active periods when the terminal can properly receive and process channel state information, maintaining measurement precision while preserving power savings.
Data Source
AI summary
A transmission control method and apparatus, and an electronic device are provided, The transmission control method includes: performing, by a first terminal, any one of the following operations after transmitting a target object: transmitting an associated resource of the target object; scheduling or configuring the associated resource of the target object to be within an active time or beyond an inactive time of a first configuration; and performing a first operation so that the associated resource of the target object is within the active time or beyond the inactive time of the first configuration.