Voice Packets Over Signaling Data Pipe for Call Setup
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In cellular networks, the delay in setting up an IMS dedicated bearer for voice calls or during handovers can result in unsuccessful calls or call drops, degrading user experience due to the inability to transmit voice packets over the signaling data pipe in a timely manner.
Innovation Solution
Transmitting voice packets over a signaling data pipe until the voice call data pipe is set up, and then switching to the voice call data pipe once it is established, allowing for earlier initiation of calls and reducing call failures and drops by insulating the caller from setup delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If voice packets are transmitted over the voice call data pipe, then call reliability is improved, but call setup time increases
Solution Approach 1:
The patent applies preliminary action by setting up the voice call data pipe in advance before actual voice transmission begins. The network prepares the dedicated bearer and configures routing information ahead of time, so when the UE sends the first voice packet, the data pipe is already ready to receive it immediately without delay.
Solution Approach 2:
The patent implements dynamics by enabling the system to adaptively switch between signaling data pipe and voice call data pipe based on real-time conditions. The UE monitors whether the voice call data pipe is properly set up and dynamically adjusts the transmission path accordingly, transitioning from signaling pipe to voice data pipe when conditions permit.
2Reliability
If a new IMS dedicated bearer is set up for each voice call, then call quality is improved, but setup delay increases
Solution Approach 1:
The network performs preliminary actions by pre-establishing the IMS dedicated bearer and routing configuration before the actual voice call begins. This advance preparation ensures that when voice packets need to be transmitted, the dedicated path is already in place, eliminating setup delays while maintaining dedicated bearer quality.
Solution Approach 2:
The patent uses the signaling data pipe as an intermediary mechanism during the transition period. When the voice call data pipe is not yet fully established, the system temporarily routes voice packets through the signaling data pipe as an intermediate solution, then switches to the dedicated voice data pipe once it becomes available.
3Speed
If voice packets are transmitted over the signaling data pipe, then call initiation speed is improved, but network resource consumption increases
Solution Approach 1:
The system dynamically adjusts resource usage by monitoring the setup status of the voice call data pipe. When the dedicated bearer is ready, the system switches transmission to the voice data pipe, reducing reliance on the signaling data pipe and optimizing network resource allocation between different data paths.
Solution Approach 2:
The network performs preliminary setup of the voice call data pipe with appropriate resource allocation and routing configurations. This advance preparation ensures that when voice packets are transmitted, the dedicated path is ready to handle traffic efficiently, reducing the need to continuously use signaling data pipe resources.
Data Source
AI summary
Providing a voice call includes: receiving, from a user equipment (UE), a request to initiate a voice call traffic session; requesting setup of a voice call data pipe; based on at least a setup of the voice call data pipe not completing prior to a timer event, transmitting voice packets over a signaling data pipe; and based on at least the voice call data pipe setup completing, ceasing to transmit voice packets over the signaling data pipe and transmitting voice packets over the voice call data pipe. Placing a voice call includes: requesting, by the UE, to initiate the voice call traffic session; based on at least a first trigger event, transmitting voice packets over the signaling data pipe; and based on at least a second trigger event, ceasing to transmit voice packets over the signaling data pipe and transmitting voice packets over the voice call data pipe.