Video Call Handover Intra Frame Generation
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Solution Overview
Problem
Handovers and Out-Of-Service (OOS) conditions during video calls cause gaps in data transfer, leading to video artifacts due to lost inter frames, disrupting the smooth streaming of video calls across different access technologies.
Innovation Solution
A communication device with circuitry to detect handovers and OOS conditions, generating intra frames or requesting their generation from the remote device to maintain video call synchronization and prevent artifacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If handover between access technologies is performed to maintain connectivity, then communication service continuity is improved, but video artifacts appear due to data transfer gaps
Solution Approach 1:
The system performs preliminary detection of handover conditions and triggers intra frame generation before the handover completes. The communication device detects when a handover is initiated and proactively requests or generates intra frames in advance, so that when the data transfer gap occurs during handover, the receiving device already has a complete reference frame to resume decoding without artifacts.
Solution Approach 2:
The system applies preliminary anti-action by preemptively counteracting the harmful effect of data transfer gaps. When handover is detected, the system immediately generates or requests intra frames to prevent the accumulation of lost inter frames that would cause video artifacts, thereby neutralizing the potential harm before it manifests.
2Object-generated harmful factors
If intra frames are generated during handover or OOS recovery, then video artifacts are eliminated, but data transfer time increases
Solution Approach 1:
The system generates or requests intra frames in advance during detected handover conditions or after OOS recovery, rather than waiting for video artifacts to appear. This preliminary action ensures that when normal data transfer resumes, the video stream can immediately synchronize using the pre-generated intra frame, minimizing actual playback disruption and perceived time loss.
3Stability of the object's composition
If continuous video frame transmission is maintained during handover, then video stream continuity is preserved, but network resources are wasted during OOS conditions
Solution Approach 1:
The system implements self-service by having the communication device autonomously detect OOS conditions and handover states, and automatically control the generation and transmission of intra frames without requiring external network coordination. This allows the device to independently manage video stream stability while conserving network resources by suspending unnecessary transmissions during OOS conditions.
Data Source
AI summary
A communication device including various circuitry is provided. The first and second circuitry provide a first communication link to a remote device using a first access technology and a second communication link to the remote device using a second access technology, respectively. The third circuitry detects whether a video call has been handed over from the first communication link to the second communication link, or whether an OOS condition of the first or second communication link that occurred during the video call has ended. The fourth circuitry generates a first intra frame for the remote device or requests that the remote device generate a second intra frame for the communication device, when the video call has been handed over from the first communication link to the second communication link or when the OOS condition occurred during the video call has ended.