Positioning Reference Signal Resource Configuration for Energy-Efficient Wireless Networks
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wireless communication networks inefficiently use resources during positioning procedures, leading to excessive power consumption, particularly in carrier aggregation and dual-connectivity scenarios where devices face challenges in performing energy-efficient positioning reference signal measurements.
Innovation Solution
A method and apparatus for configuring positioning reference signal resources based on discontinuous reception configurations, allowing user equipment to perform energy-efficient positioning measurements by aligning wake-up signal and DRX configurations with PRS resource transmission, enabling optimal use of aggregated bandwidths for enhanced accuracy while reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning reference signal measurements are performed continuously to improve accuracy, then measurement precision is improved, but energy consumption increases
Solution Approach 1:
The patent applies periodic action by configuring positioning reference signal measurements to occur only during DRX active periods rather than continuously. The location server sends PRS resource configurations that are time-aligned with DRX cycles, enabling the UE to perform measurements periodically during wake-up periods while sleeping during inactive periods, thus reducing power consumption while maintaining positioning accuracy.
Solution Approach 2:
The patent applies preliminary action by pre-configuring PRS resource parameters and DRX configurations before measurement periods. The location server provides advance configuration information including PRS resource sets, timing relationships, and DRX parameters, allowing the UE to prepare measurement routines in advance during active periods and execute them efficiently without continuous processing.
2Measurement precision
If PRS resources are transmitted frequently to improve positioning accuracy, then measurement precision is improved, but resource efficiency deteriorates
Solution Approach 1:
The patent applies periodic action by transmitting PRS resources in periodic bursts aligned with DRX active periods rather than continuous transmission. The location server configures PRS resource sets with specific periodicity and timing offsets that match UE DRX cycles, enabling energy-efficient transmission that occurs only when UEs are awake and capable of measurement.
Solution Approach 2:
The patent applies dynamics by making PRS resource transmission adaptive to UE DRX states. The system dynamically adjusts PRS transmission timing and configuration based on received DRX configurations from UEs, allowing the network to optimize resource usage by transmitting PRS only when needed and in alignment with UE availability.
3Use of energy by moving object
If DRX configuration is aligned with PRS transmission to reduce power consumption, then energy efficiency is improved, but system complexity increases
Solution Approach 1:
The patent applies universality by creating a standardized alignment mechanism between DRX and PRS configurations that can be applied across multiple UEs and scenarios. The location server implements a universal configuration approach using LPP messaging to provide PRS resource sets, timing relationships, and DRX parameters that work consistently across different UE types and network configurations, reducing the need for custom solutions.
Data Source
AI summary
Apparatuses, methods, and systems are disclosed for positioning reference signal resource configuration. One method (700) includes receiving (702), at a location server, a discontinuous reception configuration of at least one user equipment. The method (700) includes transmitting (704) a positioning reference signal resource configuration to the at least one user equipment based on the discontinuous reception configuration. The at least one user equipment uses the positioning reference signal resource configuration and the discontinuous reception configuration to perform positioning reference signal measurements.