BWP Configuration for Positioning in RRC Inactive State
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Solution Overview
Problem
Current wireless communication systems, particularly in the context of 5G New Radio (NR), face challenges in efficiently managing bandwidth for small data transmissions (SDT) and positioning measurements, as they often require different bandwidth configurations, which can lead to inefficient resource utilization and power consumption when switching between these modes.
Innovation Solution
A method and system that allow a user equipment (UE) to switch between two separate bandwidth parts (BWP) - a first BWP for small data transmissions and a second, larger BWP for positioning measurements, enabling the UE to dynamically adjust its bandwidth configuration based on operational needs, either autonomously or upon network instruction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE uses a larger bandwidth for positioning measurements, then positioning accuracy is improved, but power consumption increases
Solution Approach 1:
The UE dynamically switches between a first bandwidth part for small data transmissions and a second bandwidth part for positioning measurements based on operational mode. The system transitions from a smaller bandwidth configuration during SDT to a larger bandwidth configuration when positioning measurements are required, optimizing power consumption while maintaining positioning accuracy when needed
Solution Approach 2:
The patent divides the bandwidth into separate bandwidth parts: a first bandwidth part dedicated to small data transmissions and a second bandwidth part dedicated to positioning measurements. This segmentation allows the UE to activate only the necessary bandwidth part for each operation, avoiding the need to continuously operate with a large bandwidth and reducing overall power consumption
2Productivity
If the UE switches bandwidth configuration frequently between SDT and positioning modes, then operational efficiency is improved, but device complexity increases
Solution Approach 1:
The patent creates a universal bandwidth configuration framework where the UE can operate in multiple modes (SDT mode and positioning mode) using different bandwidth parts. The network configures both bandwidth parts in advance, and the UE switches between them based on operational requirements, enabling multi-functionality without requiring separate hardware configurations for each mode
3Use of energy by moving object
If the UE uses a smaller bandwidth for small data transmissions, then power consumption is reduced, but data transmission capacity is limited
Solution Approach 1:
The system dynamically adjusts bandwidth allocation based on operational mode. During small data transmission mode, the UE uses a first bandwidth part with smaller bandwidth to conserve power. When positioning measurements are required, the UE switches to a second bandwidth part with larger bandwidth, ensuring adequate transmission capacity for positioning signals while maintaining power efficiency for data transmissions
Data Source
AI summary
Disclosed are techniques for wireless positioning performed by a user equipment. For example, the method includes entering into a Radio Resource Control (RRC) inactive state. The method includes monitoring, during a first time interval, while the user equipment is in the RRC inactive state, one or more first bandwidth parts having a first bandwidth to perform a first operation. The method includes monitoring, during a second time interval, while the user equipment is in the RRC inactive state, one or more second bandwidth parts having a second bandwidth to perform a second operation. The second bandwidth is different than the second bandwidth.