Wireless A/V Stream Format Synchronization Protocol
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Solution Overview
Problem
Wireless communication systems face challenges in synchronizing audio/video stream format changes due to dynamic wireless channel conditions, leading to fluctuations in link quality and data rate, which affect the quality of service.
Innovation Solution
A synchronization mechanism is implemented where a request message is sent to change the A/V stream format, followed by a response message to synchronize the format change between the requester and responder, accounting for wireless transmission delays and processing times to ensure smooth transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If stream format changes are made dynamically to adapt to wireless channel conditions, then adaptability is improved, but synchronization between A/V source and A/V sink deteriorates
Solution Approach 1:
The patent applies preliminary action by negotiating and agreeing upon format change timing in advance between A/V source and A/V sink before the actual format change occurs. This allows both parties to prepare for the transition simultaneously, ensuring synchronization while enabling dynamic adaptation to channel conditions.
Solution Approach 2:
The patent uses feedback mechanisms where the A/V sink monitors wireless channel conditions and provides feedback to the A/V source, triggering coordinated format change negotiations. This feedback loop enables adaptive format changes while maintaining synchronization through the established request-response-confirmation protocol.
2Reliability
If format change timing is negotiated and agreed upon between A/V source and A/V sink, then synchronization is improved, but transmission delay increases
Solution Approach 1:
Format change timing is negotiated and agreed upon in advance between A/V source and A/V sink before the actual format change occurs. This preliminary coordination ensures both parties are synchronized for the transition, minimizing disruption to the A/V stream while accounting for wireless transmission delays.
3Speed
If A/V format changes are made without synchronization, then responsiveness to channel conditions is improved, but quality of service deteriorates
Solution Approach 1:
The system performs preliminary negotiation and agreement on format change timing before executing the actual format change. This approach enables responsive adaptation to channel conditions while ensuring both A/V source and A/V sink are synchronized, thereby maintaining quality of service during transitions.
Solution Approach 2:
The A/V sink monitors channel conditions and provides feedback to trigger coordinated format change negotiations. This feedback-driven approach maintains responsiveness to channel variations while ensuring quality of service through synchronized format changes agreed upon by both parties.
Data Source
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AI summary
A protocol for wireless transmission of audio/video (A/V) information is provided. The protocol includes sending a request message from a requester to a responder for changing A/V format of an A/V stream transmission between the requester and the responder over a wireless communication medium. In reply to the request message, sending a response message from the responder to the requester for synchronizing the A/V format change. The requester and the responder changing the A/V format of the A/V stream in synchrony.