User Equipment Call Handling During Ringing State
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Solution Overview
Problem
In wireless communication systems, when a user equipment (UE) is in a ringing state due to one call message, it often sends a busy message to subsequent call messages, making it unreachable for urgent calls, even if the UE can alert users of incoming calls and allow selection between calls.
Innovation Solution
The UE transmits an indication of its ringing state to both the initial and subsequent call devices, allowing users to select which call to proceed with, thereby improving user experience and availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE sends a busy message to subsequent call messages while in a ringing state, then the UE is protected from being overloaded with multiple simultaneous calls, but the UE becomes unreachable for urgent calls and the user cannot select between calls
Solution Approach 1:
The system dynamically changes the UE's response behavior based on the current call state. Instead of statically sending busy messages during ringing, the system transitions to dynamically indicating the ringing state and enabling call selection, allowing the response mechanism to adapt to user needs in real-time
Solution Approach 2:
The system introduces feedback by notifying subsequent calling devices of the ringing state, enabling them to wait or transfer messages. This feedback loop allows the system to adjust call handling based on the actual ringing status rather than blindly rejecting calls
2Adaptability or versatility
If the UE indicates ringing state to subsequent calling devices, then the user can select between calls and urgent calls can reach the UE, but multiple busy messages are reduced which increases network resource usage
Solution Approach 1:
The network acts as an intermediary by receiving and storing call messages during the ringing state, then delivering them based on user selection. This intermediary role reduces the need for multiple busy message transmissions and call attempt retries, conserving network resources
Solution Approach 2:
The system performs preliminary action by pre-notifying subsequent calling devices of the ringing state before actual call connection attempts. This advance notification prevents wasted network traffic from failed connection attempts and reduces overall network resource consumption
Data Source
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AI summary
Aspects of the disclosure generally relate to wireless communication. A first wireless communication device may transmit, to a second wireless communication device and a third wireless communication device, an indication that the first wireless communication device is in a ringing state based at least in part on a first call message associated with the second wireless communication device and a second call message received from the third wireless communication device. The second call message may be received while the first wireless communication device is in the ringing state due to the first call message. The first wireless communication device may selectively proceed based on at least one of the first call message or the second call message in response to user input that indicates whether to accept at least one of the first call message, the second call message, or both the first call message and the second call message.