Periodic Registration Timer for IoT Power and Reliability
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Solution Overview
Problem
Current 5G mobile communication systems face challenges in efficiently managing IoT devices that require scheduled data transmission, as they often enter power-saving modes, making them unreachable for timely data communication, which is critical for applications like factory automation.
Innovation Solution
A method is proposed where a 3rd party application server provides schedule information to the mobile communication network, allowing IoT devices to maintain a connected state at specific times for data transmission, using techniques like MICO mode and periodic registration timers to reduce power consumption while ensuring timely data access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If IoT devices enter power-saving modes to reduce power consumption, then power consumption is reduced, but the devices become unreachable for timely data communication
Solution Approach 1:
The patent implements periodic registration timers that wake up IoT devices at scheduled intervals to perform registration with the network. This periodic action allows devices to enter power-saving modes between registrations (reducing power consumption) while ensuring they become reachable at predictable intervals (maintaining communication reliability). The network can schedule downlink data transmission to coincide with these periodic wake-up times.
2Reliability
If IoT devices maintain connected state continuously to ensure timely data transmission, then data communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by having the network pre-schedule downlink data transmission times and proactively wake up IoT devices before data arrives. The application server provides schedule information to the network, which then triggers registration procedures and wakes devices in advance. This eliminates the need for continuous connection while ensuring devices are ready to receive data when it arrives, maintaining reliability without continuous power consumption.
3Reliability
If the network proactively wakes up IoT devices at scheduled times to ensure timely data access, then data communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent introduces an intermediary scheduling mechanism where the application server provides schedule information to the network, which then acts as a mediator to coordinate device wake-up times with data arrival times. This intermediary layer abstracts the complexity from individual devices, allowing them to use simple periodic registration timers while the network handles the complex scheduling and coordination of wake-up signals and data transmission.
Data Source
AI summary
A method performed by an access and mobility management function (AMF), the method comprising receiving, from a User Equipment (UE), a first message including capability information related to a periodic registration timer, setting a periodic registration timer indication based on the capability information, and transmitting, to the UE, a second message including the periodic registration timer indication.