Communication Device Data Call Suspension Control
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Solution Overview
Problem
Conventional communication devices suspend ongoing data calls when a mobile terminated (MT) call is incoming, disrupting the user experience, especially for important real-time data calls.
Innovation Solution
A communication device controlling method that resumes or keeps a data call suspended for a short time before handling a MT call request, allowing the data call to appear uninterrupted by maintaining or releasing the Radio Resource Control (RRC) connection based on the MT call type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ongoing data call is suspended when a MT call request is received, then the MT call can be properly handled, but the user experience deteriorates due to noticeable interruption of the data call
Solution Approach 1:
The patent maintains the data call in a suspended state rather than fully releasing it, allowing the data call to resume immediately after the MT call is handled. This creates the perception of continuous data call operation while still allowing proper MT call processing, thereby maintaining both reliability and user experience.
Solution Approach 2:
The system performs preliminary suspension of the data call before the MT call is fully established, and then quickly resumes it. This preliminary action minimizes the actual interruption time, making the suspension imperceptible to the user while ensuring proper MT call handling.
2Reliability
If the data call is suspended for a long time to handle the MT call, then the MT call can be properly accepted or rejected, but the data call interruption becomes noticeable and user experience worsens
Solution Approach 1:
By maintaining the data call in a suspended state with the RRC connection kept active, the system enables rapid resumption. The data call appears continuous to the user while the system still has time to process the MT call request, balancing processing completeness with minimal perceived interruption.
Solution Approach 2:
The system dynamically adjusts the handling of the data call based on the MT call type. For packet-switch based calls, the data call is resumed quickly; for circuit-switch based calls, it is rejected. This dynamic response optimizes the balance between MT call processing and data call continuity.
3Reliability
If the RRC connection is released to handle the MT call, then the MT call can be established, but the data call must be suspended and user experience deteriorates
Solution Approach 1:
The patent segments the handling of MT calls based on their type (packet-switch vs. circuit-switch). This segmentation allows different connection management strategies to be applied: keeping the RRC connection active for packet-switch calls to maintain data call continuity, and releasing it only for circuit-switch calls where data call rejection is acceptable.
Solution Approach 2:
The system changes the RRC connection state parameter based on the MT call type. For packet-switch based MT calls, the RRC connection is maintained in an active state, allowing the data call to be suspended minimally and resumed quickly. This parameter change optimizes both MT call establishment and data call continuity.
Data Source
AI summary
A communication device controlling method, for controlling a communication device including a first subscriber identification and a second subscriber identification when a process of a data call established with the first subscriber identification is in a suspension, comprising: (a) receiving, by a processor of the communication device, a request to establish a mobile terminated (MT) call with the second subscriber identification; and (b) resuming, by the processor, the process of the data call from the suspension before an instruction of accepting or rejecting the request is received if the MT call is packet-switch based.