PRS Reserved Resource Mapping for Continuous Data Reception
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Solution Overview
Problem
Existing wireless communication systems face challenges in simultaneously ensuring ultra-reliable low latency communication (URLLC) support and low latency positioning due to collisions between positioning reference signals (PRS) and downlink data channels, leading to dropped signals and suboptimal performance in scenarios like Industrial Internet of Things (I-IoT).
Innovation Solution
Configuring reserved resources for PRS measurements without measurement gaps, allowing simultaneous data reception and PRS measurements by mapping data channels and other reference signals around these reserved resources, using RRC, MAC CE, or DCI signaling to manage priority and resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If measurement gaps are configured for PRS measurements, then positioning measurement capability is improved, but data reception continuity deteriorates due to resource interruptions
Solution Approach 1:
The patent segments the resource allocation by introducing reserved resources specifically for PRS measurements within the data reception timeline. This segmentation allows the system to divide the resource block into measurement portions and data reception portions, enabling simultaneous operation without mutual interference.
Solution Approach 2:
The patent resolves the time-domain conflict by introducing a resource dimension where PRS measurements and data reception occur in different reserved resource allocations. This dimensional separation allows both operations to coexist without requiring traditional measurement gaps that interrupt the time sequence.
2Productivity
If PRS and data channels are transmitted in the same resources, then resource utilization is improved, but signal collision occurs leading to dropped signals
Solution Approach 1:
The patent applies local quality by assigning different resource characteristics to different signal types. Reserved resources are specifically configured with properties suitable for PRS measurements, while other resources are optimized for data transmission. This localized resource optimization ensures each signal type receives appropriate resource quality without causing collisions.
Solution Approach 2:
The patent introduces reserved resources as an intermediary layer between PRS signals and data channels. These reserved resources act as a mediator that separates the two signal types in the resource domain, preventing direct collision while maintaining high overall resource utilization through efficient resource management.
3Measurement precision
If measurement gaps are used for PRS measurements, then positioning accuracy is improved, but latency increases due to interrupted data reception
Solution Approach 1:
The patent maintains continuity of useful action by enabling data reception to proceed without interruption through reserved resource allocation. PRS measurements are performed in designated reserved resources while data reception continues in other resources, eliminating the time loss associated with traditional measurement gaps and reducing positioning latency.
4Measurement precision
If reserved resources are allocated for PRS measurements, then positioning performance is improved, but resource availability for data transmission decreases
Solution Approach 1:
The patent applies parameter changes by dynamically configuring reserved resource parameters such as time domain locations, frequency domain allocations, and periodicity. These parameter adjustments optimize the balance between positioning performance and data transmission resource availability, allowing the system to adapt resource allocation based on specific operational requirements.
Data Source
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AI summary
Systems and methods for generating and configuring reserved resources associated with positioning measurements and calculations are provided herein. A wireless device can be configured to receive downlink data and perform positioning reference signal (PRS) measurements in one or more reserved resources without a configured measurement gap. Configuration information can indicate that PRS measurement is prioritized in a reserved resource.