Channel Boundary Monitoring for Low-Power Blind Detection
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Solution Overview
Problem
In device-to-device (D2D) communication, especially in unlicensed bands, the need for blind detection by user equipment (SL UE) leads to high power consumption due to unknown data transmission times by other terminals, necessitating frequent channel assessments.
Innovation Solution
Implementing a method for channel detection that involves monitoring channel states at time-unit boundaries to determine whether blind detection is necessary in subsequent time units, reducing the number of blind detection instances and thus power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminal devices perform blind detection in multiple slots to detect channel occupancy, then channel access reliability is improved, but power consumption increases
Solution Approach 1:
The terminal device performs channel state determination at the boundary of the first time unit before entering the second time unit. This preliminary action allows the device to decide whether blind detection is needed in advance, avoiding unnecessary detection operations and reducing power consumption while maintaining reliable channel access through proper detection timing.
2Measurement precision
If terminal devices perform blind detection in all slots, then channel detection completeness is improved, but processing time increases
Solution Approach 1:
Instead of performing blind detection in all slots (excessive action), the terminal device performs detection only when necessary based on channel state determination at time unit boundaries. This partial action approach maintains detection completeness for actual transmission opportunities while reducing processing time by skipping unnecessary detection operations in idle slots.
Data Source
AI summary
The disclosure provides a method for channel detection, a terminal device, and a non-transitory computer-readable storage medium. The method includes the following. Monitor a channel before a time-unit boundary and/or after the time-unit boundary, and determine, according to a channel monitoring result, whether to perform blind detection in a time unit next to the time-unit boundary.