Cell Wake-Up TX/RX Mode Switching for DRX Energy Savings
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Solution Overview
Problem
Existing communication systems face challenges in balancing energy saving effects with user equipment (UE) performance due to discontinuous transmission/reception modes, leading to issues such as unnecessary signal transmission and poor energy efficiency.
Innovation Solution
A method and device that allow a terminal device to select a target transmission/reception mode based on predefined conditions and transmit wake-up information to a network device, enabling the serving cell to switch to an optimal mode, thereby optimizing energy savings and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If discontinuous transmission/reception with long off-duration is used, then energy saving effect is improved, but UE connection performance deteriorates due to severe issues with critical common signals
Solution Approach 1:
The patent segments the transmission/reception modes into multiple categories (first TX/RX mode for synchronization and system information, second TX/RX mode for random access, third TX/RX mode for data transmission) and applies different off-duration configurations to each segment. This allows critical signals to be transmitted during appropriate segments while maintaining energy savings during non-critical segments.
Solution Approach 2:
The patent dynamically adjusts the off-duration based on the selected TX/RX mode and UE conditions. The network device determines the off-duration according to the specific transmission mode and UE requirements, allowing flexible adaptation between energy saving and connection reliability needs.
2Reliability
If discontinuous transmission/reception with short off-duration is used, then UE connection performance is maintained, but energy saving effect deteriorates
Solution Approach 1:
The system dynamically selects appropriate off-durations based on real-time UE conditions and required TX/RX modes. When UE connection reliability is prioritized, shorter off-durations are applied; when energy saving is prioritized and UE conditions permit, longer off-durations are applied.
Solution Approach 2:
The patent changes the off-duration parameter adaptively based on the selected transmission mode and UE state. Different TX/RX modes are associated with different optimal off-duration values, allowing the system to optimize the balance between energy saving and connection performance by adjusting this key parameter.
3Device complexity
If fixed TX/RX mode is used, then device complexity is reduced, but adaptability to different UE conditions and network scenarios deteriorates
Solution Approach 1:
The patent segments the TX/RX configuration into multiple predefined modes (first, second, and third TX/RX modes) with distinct characteristics. Each mode is designed for specific scenarios, and the network device selects the appropriate mode based on UE conditions, providing adaptability without requiring complex custom configurations.
Solution Approach 2:
The system adapts to different UE conditions by changing the selected TX/RX mode and associated parameters (such as off-duration). This parameter-based adaptation allows the system to handle diverse scenarios using a standardized set of modes, maintaining simplicity while achieving versatility.
Data Source
AI summary
Example embodiments of the present disclosure relate to methods, devices, and computer storage medium for communication. A terminal device selects a target transmission and reception (TX/RX) mode from a plurality of TX/RX modes of a serving cell of a network device based on a predefined condition associated with the target TX/RX mode. The terminal device transmits, to the network device, wake-up information requesting the serving cell in a discontinuous transmission or reception (DTX/DRX) mode to wake up into the target TX/RX mode. As such, with the wake-up information, a serving cell may be requested to wake up into a target TX/RX mode of the plurality of TX/RX modes. In other words, a joint design of the cell wake-up and the on-demand common signal may be achieved.