Subscriber Identity State Synchronization via Measurement Reports
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Solution Overview
Problem
Dual-card cellular phones experience unsynchronized states between the user equipment (UE) and the network due to interruptions in communication procedures between subscriber identities, leading to missed mobile-terminated calls and poor user experience.
Innovation Solution
A mobile communication device sends a measurement report to the serving cell indicating poor signal quality when a communication procedure is completed or interrupted, triggering a connection release to maintain synchronization between the UE and the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a communication procedure for one subscriber identity is allowed to complete fully with the network waiting for a period before connection release, then the communication reliability is improved, but when another subscriber identity initiates a new procedure during this waiting period, the state synchronization between UE and network deteriorates causing missed calls
Solution Approach 1:
The UE sends a measurement report indicating poor signal quality as a preliminary action before the network would naturally release the connection. This proactive reporting triggers the network to release the connection earlier than the standard waiting period, preventing state desynchronization when another SIM initiates a procedure during the waiting period.
Solution Approach 2:
The system implements feedback by having the UE monitor and report signal quality conditions to the network. When the UE detects that a communication procedure needs to be interrupted due to another SIM's activity, it sends feedback in the form of a measurement report, which triggers the network to adjust its connection management and release the connection appropriately.
2Stability of the object's composition
If the network waits for a period of time before sending connection release command after communication procedure completion, then the communication stability is improved, but the time efficiency deteriorates as the UE remains in connected mode longer than necessary
Solution Approach 1:
The UE sends a measurement report as a preliminary action to trigger early connection release. By proactively reporting poor signal quality conditions, the UE initiates the connection release process before the network's standard waiting period expires, reducing unnecessary connection maintenance time while maintaining stability through controlled early release.
Solution Approach 2:
The connection release timing becomes dynamic rather than fixed. Instead of always waiting for the standard period before release, the system adapts the release timing based on real-time conditions - sending measurement reports when signal quality deteriorates or when procedure interruptions occur, allowing the connection to be released at the optimal moment for both stability and efficiency.
Data Source
AI summary
A mobile communication device including a Radio Frequency (RF) device and a baseband processor is provided. The RF device performs wireless transmission and reception to and from one or more cells. The baseband processor uses a first subscriber identity to establish a connection with a serving cell via the RF device to perform a first communication procedure, and in response to completing the first communication procedure or the first communication procedure being interrupted by a second communication procedure associated with a second subscriber identity, uses the first subscriber identity to send a measurement report to the serving cell via the RF device. In particular, the measurement report indicates a reported signal quality of the serving cell is poor enough to release the connection.