Sidelink User Equipment Resource Selection With Dynamic Parameters
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Solution Overview
Problem
The existing parameter values used by user equipment (UE) in sidelink communication, such as interference threshold, signal strength threshold, and channel occupancy rate threshold, are fixed, leading to suboptimal resource selection and imbalance between reliability and packet drop rate.
Innovation Solution
Adaptive determination of parameter values based on target mapping relationships or initial values with numerical value adjustment step lengths, considering factors like time lengths, counter values, and retransmission numbers to optimize resource assignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed parameter values are used in resource monitoring process, then device complexity is reduced, but reliability and resource selection performance deteriorate
Solution Approach 1:
The patent transforms fixed parameters into dynamic adjustable parameters. The network device configures multiple parameter values and indicates which one to use through signaling (e.g., index indication, offset indication). This allows parameters to adapt to different channel conditions and traffic scenarios while maintaining manageable complexity through network-controlled selection.
Solution Approach 2:
The patent changes the values of communication parameters (interference threshold, signal strength threshold, channel occupancy rate threshold, distance threshold) based on different scenarios. The network device provides multiple configured values and uses signaling to select appropriate values dynamically, enabling parameter optimization without requiring complex UE-side calculations.
2Ease of operation
If fixed parameter values are used, then ease of operation is improved, but adaptability to different scenarios deteriorates
Solution Approach 1:
The system enables dynamic parameter adaptation through network signaling. The network device configures multiple parameter values in advance and indicates the appropriate one to use based on current conditions. This maintains operational simplicity for the UE while achieving high adaptability through network-controlled parameter selection.
Solution Approach 2:
The patent creates a universal parameter configuration mechanism that works across different scenarios (V2X, D2D, different channel conditions). The same framework of configuring multiple values and selecting through signaling applies universally, making the system versatile without requiring scenario-specific complex configurations at the UE side.
3Device complexity
If autonomous resource selection mode is used with fixed parameters, then device complexity is reduced, but productivity and system performance deteriorate
Solution Approach 1:
The network device acts as an intermediary that provides parameter guidance to the UE. Instead of the UE making complex autonomous decisions, the network configures multiple parameter values and indicates which one to use. This intermediary approach reduces UE complexity while improving resource selection efficiency through network-optimized parameters.
Solution Approach 2:
The network device performs preliminary configuration of multiple parameter values before the UE needs to make resource selections. By pre-configuring and pre-evaluating multiple parameter options, the network prepares optimal parameters in advance, enabling the UE to efficiently select resources without complex real-time calculations.
Data Source
AI summary
A user equipment which is applied to sidelink communication and includes: a memory, a processor and a program which is stored in the memory and executable on the processor. The program, when executed by the processor, causes the user equipment to perform: determining an occupation situation of a transmission resource corresponding to a current time; and in a case that the transmission resource is not occupied, adjusting a value of a counter. The counter is applied to resource assignment.