Ambient IoT Temporary Identifier Management for Secure 5G Paging
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Solution Overview
Problem
Ambient IoT (A-IoT) devices face challenges in integration into 5G networks due to lack of RRC states, limited power, and exposure of permanent device identifiers, leading to unauthorized tracking and signaling overhead.
Innovation Solution
A-IoT devices obtain temporary identifiers (IDs) through a transceiver and circuitry, using random numbers or encrypted device IDs, reducing exposure and signaling overhead, and supporting new operation states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If permanent device identifiers are used for A-IoT devices, then device identification is reliable, but security is compromised due to unauthorized tracking
Solution Approach 1:
The patent divides the identifier into two parts: a permanent device identifier stored securely in the device, and a temporary identifier used for communication. The temporary identifier is generated by combining the permanent identifier with random numbers or encryption keys, creating a segmented approach where only the temporary part is exposed during communication, thus maintaining identification reliability while preventing unauthorized tracking.
Solution Approach 2:
The temporary identifier acts as an intermediary between the permanent device identifier and the network. Instead of directly exposing the permanent identifier, the system uses this intermediate temporary identifier for all communication purposes, including paging and identification, thereby protecting the permanent identifier from unauthorized access while maintaining reliable device identification.
2Measurement precision
If permanent device identifiers are transmitted in paging messages, then device identification is accurate, but signaling overhead increases
Solution Approach 1:
The patent extracts only the necessary identification information from the permanent device identifier and combines it with random numbers or encryption keys to create a temporary identifier. This extracted temporary identifier is then used in paging messages and other communications, reducing the amount of data that needs to be transmitted while maintaining accurate device identification.
3Use of energy by moving object
If A-IoT devices use limited power for operation, then energy efficiency is improved, but communication capability duration is reduced
Solution Approach 1:
The patent implements dynamic identifier management where temporary identifiers are generated and updated based on communication needs and power availability. The system can adaptively manage identifier refreshes and communication sessions to extend operational duration within power constraints, allowing A-IoT devices to maintain communication capability as long as power is available while optimizing energy efficiency.
Data Source
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AI summary
The disclosure relates to an ambient Internet of Things (A-loT) device, a reader device, a network entity, and respective methods for an A-loT device, a reader device, and a network entity. More specifically, the A-loT device comprises a transceiver and a circuitry. The transceiver, in operation, receives a paging message; transmits a first message including an identifier indication for the A-loT device. The circuitry, in operation, obtains, based on the identifier indication, a temporary identifier, ID, for the A-loT device.