Sidelink Positioning Resource Allocation in 5G Wireless Systems
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in positioning accuracy and coverage, especially in sparse network layouts and areas outside cell coverage, due to reliance on base station distribution and network layout costs.
Innovation Solution
The introduction of sidelink communication-based positioning technology, where user equipment (UE) receives and transmits positioning signals directly with other UEs on sidelink channels, allowing for resource allocation determination using mapping rules, sidelink control information, inter-node coordination, request signaling, and channel sensing to improve positioning accuracy and coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning is performed using base station distribution and traditional network layout, then positioning coverage can be provided in areas with base stations, but positioning accuracy deteriorates in sparse network layouts and areas outside cell coverage
Solution Approach 1:
The patent introduces sidelink communication as an intermediary mechanism between UEs for positioning. Instead of relying solely on base stations, UEs can directly exchange positioning signals through sidelink channels, enabling positioning in areas outside cell coverage and improving accuracy in sparse network layouts.
Solution Approach 2:
The patent enables UEs to perform self-positioning by autonomously determining resources for transmitting and receiving positioning signals through channel sensing and resource selection. This self-service capability allows positioning without continuous base station intervention, improving both accuracy and coverage.
2Measurement precision
If sidelink communication-based positioning is introduced to improve positioning accuracy and coverage, then positioning performance in sparse networks and outside cell coverage is improved, but resource allocation complexity increases
Solution Approach 1:
The patent employs preliminary action by pre-configuring resource pools and establishing resource allocation rules before positioning operations. UEs perform channel sensing and resource selection in advance, determining time-frequency resources for positioning signals before actual positioning occurs, thereby managing complexity through structured pre-planning.
Solution Approach 2:
The patent utilizes parameter changes by dynamically adjusting resource allocation based on channel conditions, UE positions, and network configurations. Through parameters such as resource pool configurations, sensing window sizes, and resource selection thresholds, the system adapts to different scenarios while maintaining manageable complexity through standardized parameter sets.
3Adaptability or versatility
If multiple resource determination methods (mapping rules, sidelink control information, inter-node coordination, request signaling, channel sensing) are used for resource allocation, then positioning functionality and adaptability are enhanced, but system complexity and signaling overhead increase
Solution Approach 1:
The patent applies dynamics by enabling flexible switching between different resource determination methods based on network conditions and positioning requirements. The system can dynamically select among mapping rules, sidelink control information, inter-node coordination, request signaling, and channel sensing, allowing adaptability while managing complexity through conditional application of each method.
Solution Approach 2:
The patent achieves universality by designing a multi-functional resource allocation framework where a single resource pool configuration can serve multiple purposes and multiple determination methods can be applied to the same positioning scenario. This universal approach allows the system to handle diverse positioning requirements through a unified, standardized mechanism.
Data Source
AI summary
The disclosure relates to methods and apparatuses in a 5G or 6G communication system. Resources are determined for transmitting a sidelink positioning signal. The sidelink positioning signal is transmitted on the determined resources. Determining the resources for transmitting the sidelink positioning signal includes at least one of: determining the resources for transmitting the sidelink positioning signal based on at least one of a mapping rule and specific parameters; determining the resources for transmitting the sidelink positioning signal based on information indicated by received first sidelink control information sidelink control information (SCI); determining the resources for transmitting the sidelink positioning signal based on received inter-node coordination information; determining the resources for transmitting the sidelink positioning signal based on information indicated in request signaling if triggered by the request signaling to transmit the sidelink positioning signal; and determining the resources for transmitting the sidelink positioning signal based on channel sensing.