Sidelink Configured Grant Resource Positioning
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Solution Overview
Problem
In the context of Vehicle-to-Everything (V2X) technology, terminal devices face challenges in accurately determining the available slots for sidelink configured grant (CG) transmission resources due to inconsistencies in configuration signaling across different frame periods.
Innovation Solution
The proposed solution involves a configuration method where a network device sends a parameter to determine sidelink CG transmission resources, ensuring that these resources have the same time domain positions in different frame periods. This is achieved by configuring the resources such that the total quantity of slots within a frame period is divisible by the period of the CG transmission resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the network allocates sidelink CG transmission resources using slot offset and period parameters, then resource allocation flexibility is improved, but determination accuracy of available slots deteriorates when configuration signaling is transmitted across SFN period boundaries
Solution Approach 1:
The patent changes the reference frame parameter from dynamic SFN period boundaries to fixed radio frame boundaries (0-1023). By redefining the slot offset calculation to be relative to radio frame boundaries rather than SFN period boundaries, the configuration signaling becomes consistent across different time periods, eliminating the ambiguity that occurs when signaling crosses SFN boundaries.
Solution Approach 2:
The patent segments the time domain into fixed radio frames (each containing 1024 slots) rather than using the continuous SFN period structure. This segmentation creates discrete, non-overlapping time units with clear boundaries, allowing the slot offset to be uniquely determined within each radio frame without ambiguity from period boundary crossings.
2Area of stationary object
If configuration signaling is transmitted across SFN period boundaries, then resource allocation coverage is improved, but terminal device understanding of slot offset parameter deteriorates
Solution Approach 1:
The patent creates an equipotential reference system where all radio frames (0-1023) have the same boundary structure and slot numbering. This eliminates the potential difference (ambiguity) that exists when crossing SFN period boundaries, as every radio frame now has identical structural characteristics and the slot offset always refers to the same type of boundary (radio frame start).
Data Source
AI summary
Embodiments of the present application provide a configuration method for a sidelink configured grant, a device and a storage medium. The method includes: sending, by a network device, a parameter for determining sidelink configured grant (CG) transmission resources, where the CG transmission resources have same time domain positions in different frame periods. Since the CG transmission resources determined using the parameter configured via a network have the same time domain positions in different frame periods, a terminal device may accurately determine the time domain position of the CG transmission resource no matter in which frame period the terminal device has received the parameter sent by the network device.