Positioning Signal Scheduling with DRX and Paging Windows
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Solution Overview
Problem
The wake-up processes for sending and measuring positioning signals in terminal devices result in significant power consumption due to operations like measurement and synchronization, which are not efficiently managed in existing communication systems.
Innovation Solution
A wireless communication method that combines DRX and paging parameters to determine optimal time windows for sending and measuring positioning signals, minimizing the number of wake-ups and reducing energy consumption by aligning these processes with the terminal device's sleep and active cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal device wakes up to send and measure positioning signals, then positioning accuracy is improved, but power consumption increases
Solution Approach 1:
The patent combines DRX parameters and paging parameters to determine a unified time window for positioning signal transmission and measurement. By merging these previously separate parameter sets, the terminal device can coordinate positioning operations with its sleep/active cycles, reducing the number of wake-ups required while maintaining positioning accuracy.
Solution Approach 2:
The network device determines the time window for positioning signals in advance based on DRX and paging parameters before the terminal device needs to transmit or measure. This preliminary determination allows the terminal device to plan its wake-up schedule efficiently, performing positioning operations only when necessary according to pre-calculated timing.
2Reliability
If the terminal device performs measurement and synchronization operations, then positioning capability is improved, but energy consumption increases
Solution Approach 1:
The patent utilizes the periodic nature of DRX cycles and paging occasions to schedule positioning signal transmission and measurement. By aligning positioning operations with these periodic cycles, the terminal device performs measurements only during designated active periods, converting continuous operation into periodic action that conserves energy while maintaining positioning capability.
3Measurement precision
If the terminal device wakes up frequently for positioning, then positioning accuracy is improved, but the number of wake-up operations increases
Solution Approach 1:
The determined time window serves multiple functions simultaneously: it is used for positioning signal transmission, positioning signal measurement, and is coordinated with DRX and paging operations. This multi-functionality allows the terminal device to handle positioning and regular communication tasks within the same wake-up period, reducing the total number of wake-up operations required.
Data Source
AI summary
Provided are a wireless communication method and a communication device. An example wireless communication method includes: determining, by a first communication device, second information based on first information; or determining, by a first communication device, the first information based on the second information; wherein the first information is related to at least one of a time window for sending a first signal or a time window for measuring the first signal, the second information is related to at least one of a discontinuous reception (DRX) parameter or a paging parameter of a terminal device, and the first signal is configured for positioning of the terminal device.