Mobile Station Call Notification During Packet Switched Session
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Solution Overview
Problem
Current wireless communication devices cannot receive notifications for incoming circuit switched calls without interrupting ongoing packet switched sessions, preventing caller information from being sent to the device during such transitions.
Innovation Solution
A system and method that allow a mobile station to receive and display notifications for incoming circuit switched calls during packet switched sessions, enabling users to accept or reject these calls while maintaining the packet switched session, by utilizing a network controller to provide call notifications via the packet switched network and switching to the circuit switched network for call establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the device interrupts the packet switched session to receive circuit switched call notifications, then caller information can be received, but the packet switched session is disrupted
Solution Approach 1:
The notification system is segmented into separate components: call notifications are transmitted via packet switched data messages while voice calls use circuit switched channels. This allows independent operation of notification delivery and call handling, preventing session disruption while maintaining information delivery.
Solution Approach 2:
A notification message served by the packet switched network acts as an intermediary to deliver caller information without directly interrupting the ongoing packet switched session. The notification provides call details while the session continues uninterrupted, allowing users to decide whether to switch to circuit switched mode for the actual call.
2Duration of action of stationary object
If the device maintains the packet switched session during incoming circuit switched calls, then session continuity is preserved, but caller information cannot be sent to the device
Solution Approach 1:
The packet switched network is given multi-functionality: it simultaneously maintains ongoing data sessions and delivers call notification messages. This dual function allows session continuity while still providing caller information through integrated data messaging capabilities.
Solution Approach 2:
Call notifications are delivered through packet switched data messages that act as intermediaries, carrying caller information without disrupting the underlying packet switched session. The notification layer operates independently above the session layer, enabling information transfer while preserving session integrity.
3Reliability
If the device switches to circuit switched network for call establishment, then the circuit switched call can be established, but the packet switched session is interrupted
Solution Approach 1:
The system dynamically transitions between packet switched and circuit switched modes based on user decision. The radio interface and network mode are flexible and adaptable, allowing switching from packet switched data session to circuit switched voice call only when the user chooses to accept the call, rather than forced interruption.
Solution Approach 2:
Caller information and call notifications are delivered in advance via packet switched messages before the actual circuit switched call is established. This preliminary information delivery allows users to make informed decisions about call acceptance without immediate session disruption, preparing the user before the mode switch occurs.
Data Source
AI summary
Apparatus, system, and method for notifying a mobile station of an incoming circuit switched call during a packet switched session. During the packet switched session, a mobile station may receive a call notification of the circuit switched call. The call notification may be received via a packet switched network associated with the packet switched session. Additionally, the call notification may identify a calling party. In response, an indication of the circuit switched call may be displayed to a user on a display of the mobile station. This indication of the circuit switched call may identify the calling party. Additionally, the indication may be displayed while maintaining the packet switched session. In response, the user may provide input to the mobile station regarding whether to accept the circuit switched call. Based on this input, the mobile station may accept or reject the circuit switched call.