Multiplexed Resource Pools for 5G NR Sidelink Positioning
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently configuring resource pools for sidelink positioning, particularly in unlicensed spectrum environments, which affect the accuracy and reliability of location estimation in 5G and LTE networks.
Innovation Solution
The proposed solution involves configuring resource pools for sidelink positioning by employing time-division multiplexing (TDM) and frequency-division multiplexing (FDM) techniques to optimize the allocation of sidelink positioning reference signals (SL PRS) in both licensed and unlicensed spectrums, utilizing multiplexing methods to enhance the efficiency and accuracy of positioning measurements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resource pools for sidelink positioning are configured in unlicensed spectrum, then wireless connectivity and positioning capability are enhanced, but interference and collision with other wireless systems increase
Solution Approach 1:
The resource pool for sidelink positioning is segmented into dedicated positioning resource pools and communication resource pools. This segmentation allows positioning reference signals (SL PRS) to be transmitted in dedicated resources, reducing interference with other wireless systems while maintaining positioning capability in unlicensed spectrum.
Solution Approach 2:
The patent implements periodic transmission of sidelink positioning reference signals within configured resource pools. By using periodic action with defined periodicity and offset parameters, the system can predictably access unlicensed spectrum, reducing random collisions and interference while maintaining positioning functionality.
2Productivity
If multiple resource pools are multiplexed for sidelink communication and positioning, then resource utilization efficiency is improved, but resource pool configuration complexity increases
Solution Approach 1:
The patent merges sidelink communication resource pools and positioning resource pools into a unified resource allocation framework. By combining these functions under common configuration parameters and multiplexing schemes, the system improves resource utilization efficiency while managing configuration complexity through standardized parameters.
Solution Approach 2:
The patent introduces time-division multiplexing as an additional dimension for separating communication and positioning resources. By allocating different time slots for communication and positioning within the same frequency resources, the system achieves efficient resource utilization without significantly increasing configuration complexity.
3Measurement precision
If dedicated resource pools are allocated for sidelink positioning reference signals, then positioning accuracy is improved, but available resources for other sidelink communications are reduced
Solution Approach 1:
The patent applies local quality by allocating specific dedicated resources within the resource pool for positioning reference signals, while other resources remain available for communication. This localized dedication of certain time-frequency resources ensures positioning accuracy without completely removing resources from the pool for communication use.
Solution Approach 2:
The resource pools are designed with multi-functionality to serve both communication and positioning purposes. By configuring resource pools that can be dynamically used for either communication or positioning based on needs, the system maintains positioning accuracy while preserving resource availability for other sidelink communications.
Data Source
AI summary
A computer-readable storage medium stores instructions to configure a UE for sidelink positioning communication in a 5G NR network, and to cause the UE to perform operations including decoding RRC signaling. LTE positioning protocol (EPP) signaling received from a base station for an in-coverage scenario, or sidelink positioning protocol (SEPP) signaling from a second UE, or pre-configuration for an out-of-coverage scenario. The EPP, RRC, or SEPP signaling or the pre-configuration respectively includes configuration information configuring a first resource pool associated with sidelink communications and a second resource pool associated with SL PRS. The first resource pool is multiplexed with the second resource pool. Sidelink data is encoded for a sidelink transmission to a second UE using a first time-frequency resource from the first resource pool. A first SL PRS is encoded for transmission to a second UE using a second time-frequency resource from the second resource pool.