Terminal Uplink Data Transmission via DRX Scheduling Request
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The 5G communication system experiences transmission delays in uplink data due to the lack of clear specifications for Scheduling Request (SR) transmission time points when the Discontinuous Reception (DRX) function is applied, which deteriorates the quality of low-latency services like URLLC.
Innovation Solution
A terminal apparatus with an identification unit and a transmission management unit that determines whether to transmit uplink data in inactive or active times based on configuration information provided by network operators and service types, allowing immediate SR transmission in inactive times when configured to do so, or delaying it until active times when configured not to, thereby minimizing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the DRX function is applied to reduce battery consumption, then battery life is improved, but uplink data transmission latency increases
Solution Approach 1:
The patent applies preliminary action by enabling the terminal to transmit Scheduling Requests during inactive periods before the active period begins. This allows uplink data transmission to be initiated in advance, preventing latency accumulation while maintaining battery savings through selective SR transmission only when uplink data is present.
Solution Approach 2:
The patent implements dynamics by making the SR transmission behavior adaptive based on the presence of uplink data. The terminal dynamically decides whether to transmit SR during inactive or active periods based on real-time uplink data status, optimizing the balance between battery consumption and transmission latency.
2Loss of energy
If SR transmission is delayed until active time, then battery consumption is reduced, but service quality for low-latency services deteriorates
Solution Approach 1:
The patent applies local quality by differentiating SR transmission behavior based on service requirements. For low-latency services like URLLC, the terminal transmits SR immediately during inactive periods to ensure timely delivery, while for other services, it follows the standard active-period transmission pattern, thus providing differentiated quality where needed.
Solution Approach 2:
The patent implements parameter changes by modifying the SR transmission timing parameter based on service type and uplink data status. The system changes the transmission time parameter from standard active-period timing to immediate inactive-period timing when low-latency service is detected, thereby adjusting system behavior to meet specific service requirements.
Data Source
AI summary
As uplink data can be transmitted without delay even in a situation where DRX related to battery consumption reduction is being operated, in the same manner as when DRX is not operated, the present invention proposes a terminal device and an uplink data transmission technology, which not only can achieve battery consumption reduction, but also can process, without delay, various low latency services to be newly provided in 5G.