Busy Indication Delay Control for Multi-SIM Reachability Tracking
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Solution Overview
Problem
In multi-SIM terminals, when one Subscriber Identity Module (SIM) is communicating, the other SIM may not be able to update the periodic registration area conveniently, leading to incorrect determination of the terminal's state by the network, resulting in unnecessary de-registration and resource waste.
Innovation Solution
A delay determination method and apparatus that involve sending a busy indication from the terminal to the core network to suspend the determination process associated with the reachable state of the SIM, allowing the terminal to update the registration area at a convenient time, thereby preventing incorrect state determination and resource waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal updates the periodic registration area immediately when the timer expires, then the network can accurately determine the terminal's reachable state, but the terminal may miss communication opportunities when one SIM is busy
Solution Approach 1:
The terminal sends a busy indication message to the network side before the registration area update is complete, proactively notifying the network of the potential delay. This allows the network to adjust its determination process in advance, preventing incorrect state assessments and maintaining communication efficiency without compromising reliability.
2Reliability
If the network continuously monitors the terminal's registration area updates, then the terminal's state can be accurately tracked, but unnecessary de-registration may occur when updates are delayed due to multi-SIM operations
Solution Approach 1:
The terminal provides feedback to the network through the busy indication message, informing the network of its current communication status and registration area update timing. This feedback mechanism enables the network to adjust its monitoring and determination processes accordingly, preventing unnecessary de-registration and avoiding waste of communication resources while maintaining accurate state tracking.
Data Source
AI summary
A delay determination method, apparatus, and computer-readable medium that improves a resource utilization rate in a wireless network. The resource utilization rate is improved by: in response to receiving a busy indication sent by a terminal, delaying a determination process associated with a reachable state of the terminal.