NB-IoT Positioning via LPP Message Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current technologies face challenges in efficiently supporting positioning for Narrowband Internet of Things (NB-IOT) devices, particularly in idle mode and connected mode, due to limited resources and power constraints.
Innovation Solution
The proposed solution involves enabling positioning measurements to be triggered in both idle and connected modes for NB-IOT devices, using LPP messages to signal the UE to perform measurements, and adapting message sizes and timers based on the device's capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If positioning measurements are performed in idle mode for NB-IOT devices, then positioning capability is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic positioning by allowing NB-IOT devices to perform positioning measurements in both idle and connected modes based on network requirements and device state. The network can trigger positioning measurements at appropriate times rather than continuously, adapting the positioning behavior to current operational needs while conserving device power.
Solution Approach 2:
The patent modifies positioning protocol parameters specifically for NB-IOT devices, including extended response times and adapted message sizes. These parameter changes allow positioning measurements to be performed with relaxed timing constraints, enabling measurements to be taken when devices are in idle state without requiring immediate responses, thus reducing power consumption while maintaining positioning capability.
2Adaptability or versatility
If standard LPP message sizes are used for NB-IOT devices, then positioning protocol compatibility is maintained, but message transmission efficiency deteriorates
Solution Approach 1:
The patent applies local quality by introducing NB-specific adaptations of the LPP protocol while maintaining overall compatibility. Specifically, the message sizes and timing parameters are locally optimized for NB-IOT devices with narrower bandwidths and different power constraints, allowing efficient transmission without requiring changes to the entire positioning protocol stack.
Solution Approach 2:
The patent segments the positioning measurement process into multiple phases, allowing large positioning messages to be transmitted in smaller increments over multiple communication rounds. This segmentation reduces the burden on NB-IOT devices with limited buffer memory and narrower communication channels, improving transmission efficiency while maintaining complete positioning functionality.
3Measurement precision
If positioning measurements are triggered frequently, then positioning accuracy is improved, but device resources are depleted
Solution Approach 1:
The patent implements periodic positioning measurements where the network triggers positioning at predetermined intervals or based on specific event conditions rather than continuously. This periodic approach maintains positioning accuracy for mobile devices while significantly reducing resource consumption for stationary or low-mobility NB-IOT devices, allowing them to remain in idle state between measurement cycles.
Solution Approach 2:
The patent enables devices to autonomously determine when positioning measurements are necessary based on their mobility state, service type, and current network conditions. Devices can self-adjust their positioning measurement frequency, performing measurements only when location updates are actually needed, thereby maintaining accuracy while conserving battery power and processing resources.
Data Source
AI summary
Systems and methods of providing location techniques for a NB UE are described. The UE transmits, lo a location server, a capability message that indicates position capabilities of the UE to support different positioning methods and common information related to the position methods, including that the UE is a NB UE. The UE receives a request for location information that includes a request for positioning measurements for a particular positioning method, a NB message size limit that indicates a limit on an amount of location information to return, and a NB response time to provide the positioning measurements. At least one of the response time or message size limit is different than for the NB UE than for non-NB UEs. The UE enters an idle state, performs the measurements, and transmits at expiry of or before the NB response time, a message containing the measurements.