Terminal Device Signal Detection Optimization for Power Saving
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Solution Overview
Problem
In LTE systems, continuous detection of PDCCH during on durations and periodic paging occasions leads to power wastage in terminal devices, as they detect signals even when no data is scheduled, causing unnecessary energy consumption.
Innovation Solution
A method where terminal devices detect a first signal or channel and determine, based on the detection result and network-provided configuration, whether to detect a second signal or channel, specifically during on durations or paging occasions, thereby optimizing detection times and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal device continuously detects PDCCH during on duration, then the reliability of data reception is improved, but the power consumption increases
Solution Approach 1:
The patent applies preliminary action by having the terminal device detect a first signal (wake-up signal) before the on duration to determine whether to perform PDCCH detection. This preliminary detection of the wake-up signal allows the terminal to decide in advance whether to activate its receiver for the upcoming on duration, avoiding unnecessary power consumption while ensuring data reception reliability when needed.
Solution Approach 2:
The patent implements feedback through the network device sending wake-up signals based on actual data scheduling decisions. The terminal detects this feedback signal (first signal) and uses it to determine whether to perform the second detection (PDCCH). This feedback mechanism ensures the terminal only detects PDCCH when data is actually scheduled, resolving the contradiction between reliability and power consumption.
2Reliability
If the terminal device detects paging message at each paging occasion, then the reliability of paging reception is improved, but the power consumption increases
Solution Approach 1:
The patent applies preliminary action to paging detection by having the terminal detect a first signal (wake-up signal) before the paging occasion. This preliminary detection allows the terminal to determine in advance whether to activate its receiver for paging message detection, ensuring reliable paging reception when needed while avoiding unnecessary power consumption during periods when no paging is scheduled.
Solution Approach 2:
The patent implements feedback for paging reception by having the network device send wake-up signals based on actual paging scheduling decisions. The terminal uses this feedback to determine whether to perform paging message detection, ensuring reliable paging reception when the network actually needs to page the terminal, while avoiding power waste when no paging is scheduled.
Data Source
AI summary
A wireless communication method and device are provided. The method includes: receiving configuration information sent by a network device, the configuration information being used to configure a relationship between a detection result of a first signal or channel and whether to detect a second signal or channel; performing detection of the first signal or channel sent by the network device; and determining whether to detect the second signal or channel according to the detection result of the first signal or channel and the configuration information.