Sidelink Positioning Reference Signal Resource Allocation in 5G
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing sidelink positioning reference signals and control information in next-generation wireless communication networks, particularly in 5G systems, due to limitations in resource allocation and interference management.
Innovation Solution
The proposed solution involves determining sidelink reference signal resources and frequency resources based on specific parameters, allowing for the transmission of sidelink control information and reference signals within dedicated or shared resource pools, optimizing resource allocation and minimizing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink reference signal resources and frequency resources are determined based on specific parameters for transmission in dedicated or shared resource pools, then resource allocation efficiency is improved and interference is minimized, but system complexity increases due to multiple parameters and resource pool management
Solution Approach 1:
The patent applies parameter changes by determining reference signal resources and frequency resources based on specific parameters including resource pool type, subcarrier spacing, and cyclic shift values. These parameter variations enable flexible resource allocation across different scenarios while maintaining systematic control through defined relationships between parameters and resource assignments.
Solution Approach 2:
The patent segments the resource allocation into dedicated resource pools and shared resource pools, each with specific configuration parameters. This segmentation allows independent optimization of control signaling and data transmission resources, improving overall resource allocation efficiency while managing complexity through modular resource pool design.
2Measurement precision
If sidelink control information and reference signals are transmitted using determined frequency resources in slots, then positioning accuracy is improved, but transmission overhead increases
Solution Approach 1:
The patent implements partial action by transmitting reference signals only in specific slots where positioning measurements are required, rather than continuous transmission. The reference signals are transmitted using determined frequency resources based on parameters like cyclic shift and orthogonal cover code, providing sufficient positioning accuracy while avoiding excessive transmission overhead through selective slot utilization.
3Adaptability or versatility
If multiple parameters are used to determine frequency resources for sidelink control channel, then resource allocation flexibility is improved, but calculation complexity increases
Solution Approach 1:
The patent utilizes parameter changes to determine frequency resources for the sidelink control channel based on multiple inputs including resource pool configuration, subcarrier spacing, and cyclic shift parameters. This approach provides flexible resource allocation adapted to different transmission scenarios while managing calculation complexity through systematic parameter relationships defined in the standard.
Solution Approach 2:
The system employs self-service mechanisms where user equipment autonomously determines frequency resources using locally available parameters and pre-configured rules. This self-determination capability provides allocation flexibility without requiring complex centralized coordination, reducing calculation complexity through distributed autonomous decision-making based on standardized parameter relationships.
Data Source
AI summary
A method and apparatus are disclosed. In an example from the perspective of a device with a configuration of a first sidelink resource pool including sidelink reference signal resources, the device determines a first sidelink reference signal resource in a slot in the first sidelink resource pool. The device determines a frequency resource of a sidelink control channel associated with the first sidelink reference signal resource based on one or more parameters of the first sidelink reference signal resource, an index of the first sidelink reference signal resource, and/or an identity of the first sidelink reference signal resource. The device transmits, using the frequency resource of the sidelink control channel and in the slot in the first sidelink resource pool, a sidelink control information (SCI). The device transmits a sidelink reference signal on the first sidelink reference signal resource in the slot in the first sidelink resource pool.