Wireless Transport Protocol Switching for Streaming Stability
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Solution Overview
Problem
Current wireless communication systems, particularly in Wi-Fi Direct and P2P environments, face limitations in transport switching and recovery methods, leading to inefficiencies in streaming data between devices, especially when traditional APs are not supported, resulting in slow transmission speeds and limited distances.
Innovation Solution
A method and apparatus for a sink device in a wireless communication system that enables transport switching and recovery by exchanging messages with a source device to switch between different transport protocols, such as UDP and TCP, to maintain stable streaming over the most suitable transport protocol.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional AP-based wireless communication is used, then coverage and connectivity are improved, but transmission speed and distance are limited
Solution Approach 1:
The patent introduces a transport switching mechanism that acts as an intermediary between different transport protocols (UDP, TCP, SCTP). The system dynamically selects and switches between these protocols based on connection conditions, using each protocol's strengths to overcome their individual limitations and achieve both high speed and reliable transmission.
Solution Approach 2:
The patent implements dynamic transport protocol selection and switching based on real-time connection conditions. The system continuously monitors transmission status and adapts the transport protocol accordingly, transitioning from static protocol selection to dynamic adaptation to optimize both speed and reliability under varying conditions.
2Length of stationary object
If direct device-to-device connection is established, then transmission distance and speed are improved, but connection stability deteriorates when AP is not supported
Solution Approach 1:
The patent changes the transport protocol parameter based on connection status. When direct device-to-device connection is established, the system selects protocols optimized for long-distance transmission. When connection stability deteriorates, the system switches to more robust protocols with better error handling and retransmission capabilities, thus maintaining both distance and reliability.
Solution Approach 2:
The patent prepares multiple transport protocol options in advance and establishes switching criteria before connection failures occur. This allows the system to proactively switch to backup protocols when connection conditions deteriorate, cushioning against potential failures and maintaining connection stability during direct device-to-device transmission.
3Device complexity
If single transport protocol is used, then system complexity is reduced, but adaptability to different connection conditions deteriorates
Solution Approach 1:
The patent segments the transport layer into multiple independent protocol options (UDP, TCP, SCTP) rather than using a single monolithic protocol. Each protocol is independently managed and can be selected based on connection conditions, reducing the complexity of managing a single all-purpose protocol while improving adaptability to different transmission scenarios.
Solution Approach 2:
The patent creates a universal transport switching mechanism that can handle multiple different transport protocols through a unified interface. This multi-functional approach allows the system to adapt to various connection conditions without requiring separate management systems for each protocol, thus improving adaptability while keeping the overall system complexity manageable.
Data Source
AI summary
The present specification may provide a method for a sink device receiving a streaming from a source device in a wireless communication system. In this regard, the method for receiving streaming may comprise the steps of: receiving from the source device streaming over a first transport protocol; transmitting to the source device a first message including information regarding a transport protocol of the sink device when the first transport protocol connection is disconnected; receiving from the source device a second message including information regarding a transport protocol of the source device; and receiving from the source device the streaming over one of the first transport protocol and a second transport protocol.