Wireless Transition From Infrastructure To P2P Media Streaming
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Solution Overview
Problem
Infrastructure mode in wireless local area networks introduces latency and media playback lag in media streaming applications due to indirect connections between source and sink devices, while Peer-to-Peer (P2P) mode offers reduced latency but suffers from less robust device discovery and additional complexity.
Innovation Solution
A method that transitions from infrastructure mode to P2P mode for media streaming, enabling wireless device discovery, P2P switching capability discovery, and P2P connection parameter messaging using communication protocols above the MAC layer, allowing devices to leverage the robustness of infrastructure mode and the low latency of P2P mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If infrastructure mode is used for wireless connection, then device discovery is robust and connection setup is simple, but media streaming latency increases and media playback lag occurs
Solution Approach 1:
The system performs preliminary device discovery and capability exchange through the access point before establishing the P2P connection. This preliminary action allows devices to identify each other and negotiate P2P parameters while still connected to infrastructure mode, so that when the P2P connection is established, the media streaming can immediately switch to the direct link without discovery delays.
Solution Approach 2:
The access point serves as an intermediary that facilitates initial device discovery and capability exchange between source and sink devices. Through the access point tunnel, devices can exchange P2P connection parameters and establish the direct link before media streaming begins, thus combining the robust discovery of infrastructure mode with the low latency of P2P mode.
2Loss of time
If P2P mode is used for wireless connection, then media streaming latency is reduced and media playback lag is eliminated, but device discovery becomes less robust and system complexity increases
Solution Approach 1:
The system performs preliminary capability exchange and parameter negotiation through the access point before P2P connection establishment. Devices exchange information about their P2P capabilities and connection parameters while connected to infrastructure mode, reducing the complexity of the actual P2P connection establishment and masking the transition delay within the infrastructure mode communication.
Solution Approach 2:
The access point acts as a mediator that simplifies the P2P connection establishment process by providing a controlled environment for capability exchange and parameter negotiation. This intermediary approach reduces the complexity burden on individual devices while enabling efficient P2P connection setup.
3Productivity
If P2P connection is established directly without infrastructure mode transition, then connection speed is faster, but connection reliability and robustness decrease
Solution Approach 1:
The system performs preliminary capability verification and parameter negotiation through the reliable infrastructure mode connection before establishing the P2P link. This preliminary action ensures that both devices are capable of P2P communication and have agreed on connection parameters, thereby maintaining connection reliability while enabling fast P2P establishment.
Solution Approach 2:
The access point serves as a reliable intermediary that verifies device capabilities and facilitates the P2P connection establishment process. By mediating the initial capability exchange, the system ensures connection reliability while the actual media streaming occurs through the faster direct P2P link.
Data Source
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AI summary
Disclosed in some examples are methods, systems, devices, and machine readable mediums which provide for device discovery and P2P negotiation in infrastructure mode and then a transition to P2P mode. This allows devices to take advantage of the robustness and improved device discovery of infrastructure mode and the reduced latency of P2P mode.