Wake-Up Signal Slot Offset for Terminal Energy and Rate Trade-Off
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Solution Overview
Problem
Existing communication technologies face challenges in optimizing energy consumption reduction in terminal devices while maintaining data transmission rate requirements, particularly after the terminal device wakes up based on a wake-up signal.
Innovation Solution
A communication method and apparatus that utilize a first-type wake-up signal containing slot offsets to enable optimal energy consumption reduction in terminal devices, ensuring the current data transmission rate requirement is met by immediately providing the necessary slot offsets after waking up.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the terminal device wakes up in on duration based on the WUS to perform PDCCH monitoring, then the data transmission rate requirement can be ensured, but the energy consumption of the terminal device increases
Solution Approach 1:
The network device sends the first-type WUS containing slot offset information before the terminal device needs to perform PDCCH monitoring. This preliminary action allows the terminal device to wake up at the optimal time and perform monitoring only when necessary, avoiding unnecessary wake-ups and reducing energy consumption while ensuring data transmission rate requirements are met.
Solution Approach 2:
The slot offset information in the first-type WUS dynamically adjusts the timing relationship between the WUS and the PDCCH monitoring occasion. This dynamic adjustment allows the system to optimize the balance between energy consumption and data transmission rate by adapting the monitoring timing to current network conditions and terminal device states.
2Use of energy by moving object
If the terminal device reduces energy consumption by skipping DRX cycles, then energy consumption is reduced, but the terminal device may not obtain optimal data transmission parameters in time
Solution Approach 1:
The first-type WUS is sent in advance with slot offset information that enables the terminal device to determine the exact timing for PDCCH monitoring. This preliminary provision of timing information ensures that when the terminal device wakes up, it can immediately obtain the optimal data transmission parameters without delay, even after skipping DRX cycles to save energy.
Solution Approach 2:
The terminal device uses the slot offset information contained in the first-type WUS to autonomously determine its own wake-up timing and PDCCH monitoring occasions. This self-service mechanism allows the terminal device to optimize its energy consumption by skipping unnecessary DRX cycles while ensuring it wakes up at the right time to obtain data transmission parameters, without requiring continuous network intervention.
Data Source
AI summary
A communication method includes receiving monitoring information, where the monitoring information comprises information of a search space set corresponding to a wake-up signal (WUS); determining at least one of a monitoring periodicity of the WUS or a monitoring occasion in the monitoring periodicity based on the information of the search space set; receiving the WUS from the network device, where the WUS comprises wake-up information of at least one terminal device; and performing PDCCH monitoring based on wake-up information of the terminal device in on duration of at least one discontinuous reception DRX cycle corresponding to the WUS, where the wake-up information of at least one terminal device comprises the wake-up information of the terminal device.