Exceptional Resource Pool for NR Sidelink Positioning
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Solution Overview
Problem
In 5G wireless communication networks, determining the location of User Equipment (UE) using sidelink RF signals is challenging due to resource constraints and interference, especially in situations like radio link failures or high-priority emergency conditions where traditional resource pools for positioning may not be available or sufficient.
Innovation Solution
The implementation of an exceptional resource pool for positioning (RP-P) that can be dynamically allocated based on specific conditions, such as radio link failure or high-priority emergencies, allowing UEs to transmit or receive reference signals via sidelink connections, enabling accurate positioning even when traditional resources are insufficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional resource pools for positioning are used, then resource availability is maintained under normal conditions, but positioning reliability deteriorates in exceptional situations such as radio link failures or high-priority emergencies
Solution Approach 1:
The patent implements dynamic resource pool selection by enabling UEs to switch between traditional resource pools and exceptional resource pools based on real-time condition assessment. The UE determines whether exceptional conditions exist (such as radio link failure or high-priority emergency) and accordingly selects the appropriate resource pool, making the system adaptable to varying operational states rather than relying on a fixed resource allocation scheme
Solution Approach 2:
The patent changes the operational parameters of resource pool selection by introducing condition-based thresholds and criteria. The UE evaluates parameters such as radio link status, priority levels, and emergency conditions to determine when to transition from traditional to exceptional resource pools, thereby adjusting system behavior based on parameter changes in the operational environment
2Reliability
If exceptional resource pool is used in all situations, then positioning availability is improved, but resource waste increases in normal operating conditions
Solution Approach 1:
The patent segments the resource pool into two distinct categories: traditional resource pools for normal operations and exceptional resource pools for critical situations. This segmentation allows the system to allocate resources efficiently by matching the appropriate resource type to the operational context, avoiding the waste that would occur if exceptional resources were always activated
Solution Approach 2:
The patent implements dynamic resource pool selection by enabling UEs to switch between traditional resource pools and exceptional resource pools based on real-time condition assessment. The UE determines whether exceptional conditions exist (such as radio link failure or high-priority emergency) and accordingly selects the appropriate resource pool, making the system adaptable to varying operational states rather than relying on a fixed resource allocation scheme
3Measurement precision
If sidelink RF signals are transmitted for positioning, then positioning accuracy is improved, but interference with data communication network resources increases
Solution Approach 1:
The patent extracts positioning functions from the traditional shared resource pool and places them in a separate exceptional resource pool. This extraction isolates positioning traffic from data communication resources, allowing positioning signals to be transmitted without interfering with normal network operations, thereby resolving the interference problem while maintaining positioning accuracy
Data Source
AI summary
Embodiments herein provide for the usage of exceptional resource pool for positioning (RP-P) when a UE transmits or receives RF signals for positioning via sidelink. The UE can determine whether one or more conditions have been met for using the exceptional RP-P during a positioning session, then transmit or receive the one or more reference signals accordingly. Various conditions may be established for using the exceptional RP-P, including radio link failure, high-priority/emergency conditions, a number of anchor UEs in non-exceptional RP-P being below a threshold, a number of anchor UEs in the exceptional RP-P being above the threshold, and others. The exceptional RP-P may be provided to the UE via an exceptional RP-P configuration from a base station, location server, or another UE.