Positioning Reference Signal Timing Aligned With DRX Wake Cycles
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The independent design of Discontinuous Reception (DRX) mode and positioning measurement in wireless communication systems leads to power consumption and delay issues, as the terminal device is often woken up unnecessarily for positioning tasks during sleep states.
Innovation Solution
The proposed solution involves coordinating the DRX mode with positioning measurements by using first information associated with DRX to determine the transmission time of reference signals within active or possible active times of the DRX cycle, and managing measurement gaps and priority windows to optimize power usage and synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If DRX mode and positioning measurement are designed independently, then each function can operate autonomously, but power consumption increases due to unnecessary wake-ups
Solution Approach 1:
The patent merges the DRX mode operation with positioning measurement scheduling by having the positioning device determine reference signal transmission times based on DRX active times. This integration allows the system to coordinate wake-ups for positioning only when the terminal is already awake for data reception, eliminating redundant wake-ups and reducing power consumption while maintaining both functions' operational capabilities
2Measurement precision
If the terminal device wakes up for positioning measurement during sleep state, then positioning accuracy is maintained, but delay issues occur and power is wasted
Solution Approach 1:
The positioning device determines the transmission time of positioning reference signals in advance based on the terminal's DRX active time patterns. By pre-scheduling positioning measurements to coincide with anticipated wake-up periods, the system ensures positioning accuracy is maintained without requiring additional emergency wake-ups, thereby reducing both power consumption and delay
3Productivity
If reference signal transmission is scheduled outside DRX active time, then positioning measurement can occur independently, but terminal power consumption increases
Solution Approach 1:
The system dynamically adjusts the positioning reference signal transmission schedule based on the terminal's DRX active time characteristics. The positioning device adapts transmission timing to match when the terminal is naturally awake and active, ensuring positioning measurements can proceed without forcing the terminal into unnecessary wake states, thus maintaining productivity while reducing energy consumption
Data Source
AI summary
Provided are a wireless communication method and a communication apparatus. The method includes: receiving, by a positioning device in a core network, first information associated with DRX; and determining, by the positioning device, a transmission time of a first signal based on the first information, where the first signal is a reference signal for positioning, and the transmission time of the first signal is within a first time period. The first time period is determined based on at least a parameter of the DRX.