Periodic Triggered Location for Idle IoT Devices
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Solution Overview
Problem
Existing procedures for periodic and triggered location services in IoT devices are inadequate, as they cannot support location services when devices are in idle states for extended periods, such as during extended Discontinuous Reception (eDRX) or Power Saving Mode (PSM), preventing real-time location services like geofencing and asset tracking.
Innovation Solution
A new procedure that initiates periodic and triggered location reporting in IoT devices, involving two intermediate responses from the network to confirm activation, includes a maximum reporting interval to ensure location reporting, and adjustable sampling intervals to balance power consumption and reporting delay, enabling location services even when devices are not continuously reachable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If IoT devices use extended Discontinuous Reception (eDRX) or Power Saving Mode (PSM) to remain in idle state for long periods, then power consumption is reduced, but location services become unavailable or blocked during idle periods
Solution Approach 1:
The network entity initiates and stores location reporting configurations in advance before the IoT device becomes reachable. When the device next connects to the network, the pre-configured location reporting is activated immediately, ensuring location services are available without requiring continuous device reachability.
Solution Approach 2:
The network entity acts as an intermediary that maintains location reporting configurations and triggers location reports when the IoT device becomes reachable. This mediator approach allows location services to function even when the device itself is unreachable during idle periods, as the network entity preserves and manages the location reporting state.
2Loss of time
If location reporting is initiated immediately when the network entity receives the request, then location service responsiveness is improved, but IoT devices that are currently unreachable cannot be configured
Solution Approach 1:
The network entity performs preliminary configuration by storing the location reporting configuration upon receiving the request, before the device becomes reachable. This preliminary action ensures that when the device next connects, location reporting can be activated immediately without configuration delays.
Solution Approach 2:
The system dynamically adapts the activation timing based on device reachability status. If the device is reachable, location reporting is activated immediately. If unreachable, the configuration is stored and activated when the device becomes reachable, optimizing both responsiveness and configurability.
3Reliability
If the network entity waits for the IoT device to be reachable before initiating location reporting, then device configuration reliability is improved, but location service activation is delayed
Solution Approach 1:
The network entity performs preliminary configuration storage upon receiving the location reporting request, ensuring reliable configuration before the device becomes reachable. This preliminary action eliminates configuration delays while maintaining reliability, as the configuration is ready to be activated immediately upon device reachability.
Solution Approach 2:
The system uses feedback from device reachability status to determine activation timing. The network entity monitors whether the device is reachable and activates location reporting accordingly - immediately if reachable, or after a brief waiting period if unreachable, thereby optimizing both reliability and activation speed.
Data Source
AI summary
Methods and techniques are described for initiating a periodic and triggered location in a target UE. After an LCS Client requests initiation of periodic and triggered location reporting from the UE, two intermediate responses are returned by a network. A first response indicates that the periodic and triggered location request has been received and accepted by the network. A second response indicates that periodic and triggered location has been activated in the UE. Additionally, a periodic and triggered location request may include a maximum event sampling interval and a maximum reporting interval and one or more location triggers. The maximum event sampling interval can limit UE power consumption and the maximum reporting interval can detect when periodic and triggered location is no longer active in a UE. The location triggers may include periodic reporting, reporting using area events or reporting based on UE motion.