Terminal DRX Behavior Adaptation for HARQ Process Modes
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing Discontinuous Reception (DRX) behavior, particularly due to variations in HARQ process modes, which affect power consumption and scheduling performance in terminal devices.
Innovation Solution
The proposed solution involves determining DRX behavior based on the specific mode corresponding to the HARQ process, allowing the terminal device to properly monitor the Physical Downlink Control Channel (PDCCH) and optimize power usage and scheduling performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the terminal device monitors PDCCH discontinuously to save power, then power consumption is reduced, but scheduling performance deteriorates
Solution Approach 1:
The patent applies dynamics by making the DRX behavior adaptive to different HARQ process modes. The terminal device dynamically adjusts its PDCCH monitoring behavior based on whether the HARQ process is in first mode (with feedback) or second mode (without feedback). This dynamic adjustment allows the system to optimize between power saving and scheduling performance depending on the operational context, resolving the contradiction between continuous monitoring (good for scheduling) and discontinuous monitoring (good for power saving).
2Device complexity
If a single DRX behavior is used for all HARQ process modes, then device complexity is reduced, but scheduling performance deteriorates
Solution Approach 1:
The patent applies local quality by implementing different DRX behaviors for different HARQ process modes rather than using a uniform approach. Specifically, the terminal device applies first DRX behavior for HARQ processes in first mode (with feedback) and second DRX behavior for HARQ processes in second mode (without feedback). This localized differentiation optimizes scheduling performance for each mode while keeping the overall device complexity manageable through clear mode-based classification.
3Productivity
If the terminal device continuously monitors PDCCH to improve scheduling performance, then scheduling performance is improved, but power consumption increases
Solution Approach 1:
The patent applies parameter changes by modifying the DRX behavior parameters based on the HARQ process mode. The system changes monitoring parameters (such as monitoring duration, timing, and frequency) according to whether the HARQ process requires feedback or not. This parameter adaptation allows the terminal to achieve good scheduling performance when needed while reducing power consumption during operations where continuous monitoring is not critical.
Data Source
AI summary
A wireless communication method, a terminal device, and a network device are disclosed. The method includes: receiving, by a terminal device, a first PDCCH, where the first PDCCH is used to schedule a first TB, and the first TB corresponds to a first HARQ process; and determining, by the terminal device, DRX behavior of the terminal device based on a mode corresponding to the first HARQ process, where the mode corresponding to the first HARQ process includes a first mode and a second mode, and the first mode corresponds to DRX behavior different from the second mode. In this application, considering that DRX behavior varies with different modes of a HARQ process, the DRX behavior is determined based on the specific mode corresponding to the HARQ process, so that a PDCCH can be monitored at a proper occasion.