Energy Efficient Positioning in 5G Wireless Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in energy-efficient positioning, particularly for power-limited devices like IoT devices, as they require high power consumption for cellular-based positioning and lack coordination between location servers and RAN nodes to optimize procedures, leading to inefficiencies in power usage and latency.
Innovation Solution
The implementation of energy-efficient positioning mechanisms, including RRC-state-aware measurement configurations, UE autonomous release, and low-latency positioning system information updates, allows devices to perform positioning measurements in reduced power states and optimize energy usage by coordinating with the network to minimize unnecessary power consumption and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If cellular-based positioning is used for power-limited devices, then positioning accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic positioning measurements where the UE performs measurements only at scheduled intervals rather than continuously. The network configures measurement periods and the UE reports position information periodically, reducing power consumption while maintaining positioning accuracy for tracking mobile device location over time
Solution Approach 2:
The patent enables UE autonomous release of RRC connection after positioning measurements are completed. The UE autonomously determines when to release the connection and transitions to idle state, reducing ongoing power consumption while maintaining positioning service quality. This self-service mechanism allows the UE to manage its own power consumption without continuous network intervention
2Reliability
If RRC connection is maintained for positioning measurements, then positioning reliability is improved, but power consumption increases
Solution Approach 1:
The patent implements preliminary configuration of measurement parameters and assistance data before actual positioning measurements. The network pre-configures measurement gaps, reference signal information, and measurement criteria, allowing the UE to perform measurements efficiently without maintaining full RRC connection throughout the entire positioning process
Solution Approach 2:
The patent enables UE autonomous release of RRC connection after positioning measurements are completed. The UE autonomously determines when to release the connection and transitions to idle state, reducing ongoing power consumption while maintaining positioning service quality. This self-service mechanism allows the UE to manage its own power consumption without continuous network intervention
3Measurement precision
If positioning measurements are performed frequently, then positioning accuracy is improved, but transition latency increases
Solution Approach 1:
The patent implements periodic positioning measurements where the UE performs measurements only at scheduled intervals rather than continuously. The network configures measurement periods and the UE reports position information periodically, reducing power consumption while maintaining positioning accuracy for tracking mobile device location over time
Solution Approach 2:
The patent implements preliminary configuration of measurement parameters and assistance data before actual positioning measurements. The network pre-configures measurement gaps, reference signal information, and measurement criteria, allowing the UE to perform measurements efficiently without maintaining full RRC connection throughout the entire positioning process
Data Source
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AI summary
Apparatuses, methods, and systems are disclosed for performing energy efficient positioning. One apparatus (1700) in a mobile communication network includes network interface (1740) and a processor (1705) that establishes (1905) a LPP session with a UE (205). In response to the network interface (740) receiving (1910) an indication from the UE (205) for 5 operating in a reduced power mode, the processor (1705) configures (1915) the UE (205) for energy efficient positioning measurements.