Sidelink Positioning Reference Signal Resource Allocation
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Solution Overview
Problem
Current sidelink-based positioning systems lack a specified method for configuring sidelink resources for transmitting sidelink positioning reference signals, hindering the implementation of sidelink positioning.
Innovation Solution
A method where a first terminal device transmits a sidelink positioning reference signal using a sidelink resource configured by a network device or selected from a sidelink resource pool, allowing for effective sidelink positioning by determining a first time domain location based on the sidelink resource allocation manner, which can be configured by the network or autonomously selected by the terminal devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sidelink resources for positioning reference signals are not specified, then system complexity is reduced, but positioning functionality cannot be implemented
Solution Approach 1:
The patent enables terminal devices to autonomously select sidelink resources from a resource pool for transmitting positioning reference signals without requiring network device configuration. This self-service mechanism allows devices to independently complete positioning operations, reducing system complexity while maintaining positioning functionality through autonomous resource selection based on pre-configured resource pools
Solution Approach 2:
The patent creates a universal sidelink resource pool that can serve multiple purposes including positioning reference signal transmission, data transmission, and control signal transmission. This multi-functional resource pool allows the same resource structure to support various communication needs, reducing overall system complexity while ensuring positioning functionality is available
2Measurement precision
If sidelink resources are configured by network device, then positioning precision is improved, but system complexity increases
Solution Approach 1:
The patent segments the sidelink resource pool into dedicated positioning reference signal resources and other communication resources. By dividing the resource pool and assigning specific resources for positioning purposes, the system achieves precise positioning through dedicated resources while keeping the overall system structure organized and manageable through clear resource separation
Solution Approach 2:
The patent performs preliminary configuration of sidelink resource pools by network devices before actual positioning operations. The network device pre-configures resource pools with specific parameters and characteristics suitable for positioning, then terminal devices can directly use these pre-prepared resources, achieving high positioning precision without requiring complex real-time resource allocation during positioning operations
3Ease of operation
If terminal devices autonomously select sidelink resources, then ease of operation is improved, but positioning precision may deteriorate
Solution Approach 1:
The patent implements a dynamic resource selection mechanism where terminal devices can autonomously select sidelink resources from a pre-configured resource pool based on current channel conditions and interference levels. This dynamic adaptation allows devices to easily operate by following simple selection rules while maintaining positioning precision through intelligent resource choice that responds to changing environmental conditions
Solution Approach 2:
The patent enables terminal devices to select resources by changing parameters such as time slots, frequency resources, and spatial beams from the available resource pool. By providing multiple selectable parameter combinations in the pre-configured resource pool, devices can easily operate by selecting appropriate parameter sets while maintaining positioning precision through parameter optimization based on current conditions
Data Source
AI summary
A method for sidelink positioning, a terminal device, and a network device are provided. The method includes: transmitting, by a first terminal device, a first sidelink positioning reference signal to a second terminal device by using a first sidelink resource, where the first sidelink resource is configured by a network device, or the first sidelink resource is selected by the first terminal device or the second terminal device from a sidelink resource pool.