AIOT Reader Synchronization for Energy-Harvesting WTRUs
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Solution Overview
Problem
Existing cellular devices are not well-suited for energy harvesting due to their high peak power consumption, which exceeds the output power of energy harvesters used by batteryless or low-energy storage IoT devices, leading to maintenance and environmental challenges.
Innovation Solution
A wireless transmit/receive unit (WTRU) configured to receive and report AIOT messages from associated and non-associated devices, including device identity and signal strength, based on location changes or signal strength variations, to facilitate efficient energy management and device synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If existing cellular devices are used with energy harvesters, then communication functionality is provided, but the peak power consumption exceeds the output power of energy harvesters making the system inoperable
Solution Approach 1:
The patent implements periodic action by having the WTRU enter sleep modes between AIOT procedures and only activate during specific synchronized time slots for reading/writing AIOT devices. This periodic operation pattern allows the energy harvester to accumulate energy during low-consumption intervals and discharge during brief high-consumption bursts, resolving the contradiction between limited harvester output and peak device consumption requirements
Solution Approach 2:
The patent applies preliminary action through advance synchronization of AIOT procedures between multiple WTRUs and the network. By pre-coordinating when AIOT operations will occur and notifying other WTRUs to enter sleep mode, the system prepares energy consumption patterns in advance, allowing the energy harvester to be charged during predictable low-activity periods before discharge during scheduled operations
2Area of stationary object
If multiple WTRUs perform AIOT procedures simultaneously, then device coverage is improved, but energy consumption and synchronization conflicts increase
Solution Approach 1:
The patent implements feedback mechanisms where WTRUs report AIOT device measurements and status to the network, and the network provides synchronization commands and configuration information. This feedback loop enables dynamic coordination of AIOT procedures across multiple WTRUs, allowing them to expand coverage area while receiving real-time instructions to optimize energy consumption and avoid simultaneous operations that would cause conflicts
Solution Approach 2:
The patent applies segmentation by dividing the coverage area into zones served by different WTRUs based on their location and capability to serve specific AIOT devices. The network assigns AIOT devices to specific WTRUs and coordinates their operations, effectively segmenting the overall service area to allow multiple WTRUs to expand total coverage without causing energy waste from redundant simultaneous operations
Data Source
AI summary
A wireless transmit/receive unit (WTRU) may be configured to receive, from one or more responding ambient internet of things (AIOT) devices, an AIOT message and to report a device identity and data from the AIOT message of the one or more responding AIOT devices that are in an associated device list. The associated device list indicates AIOT devices that are associated with the WTRU. The WTRU may be configured to report additional information that includes information of a non-associated AIOT device, which is a responding AIOT device that is not in the associated device list. The additional information may be reported based on a change in a location of the WTRU or a quality of a transmission of the responding non-associated AIOT device. The additional information may comprise a device identity of the responding non-associated AIOT device and a signal strength measurement of the responding non-associated AIOT device.