Wi-Fi Display Session Over Existing L2 Link
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Solution Overview
Problem
Existing Wi-Fi display technologies require tearing down existing L2 connections to establish L3 connections, leading to resource wastage and increased configuration time, especially when establishing WFD sessions between devices in a network.
Innovation Solution
Establishing an L3 WFD connection over an existing L2 P2P or TDLS connection without tearing down the existing L2 connection, using techniques such as transmitting discovery request and response frames to initiate a WFD session while maintaining the existing L2 link, thereby reducing the need for new connection setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing L2 connections are torn down to establish L3 WFD connections, then reliable connection establishment is achieved, but system resources are wasted and configuration time increases
Solution Approach 1:
The patent performs preliminary actions by establishing the L2 connection first, then utilizing it for L3 WFD connection establishment. The L2 connection is set up in advance and maintained as a foundation for subsequent L3 communication, avoiding the need to tear it down and re-establish connections sequentially.
Solution Approach 2:
The patent merges the L2 and L3 connection establishment processes by allowing L3 WFD connections to be established over the existing L2 connection infrastructure. This combining approach enables both layer 2 and layer 3 connections to coexist and function simultaneously, eliminating resource wastage from connection teardowns.
2Reliability
If existing L2 connections are torn down to establish L3 WFD connections, then proper connection hierarchy is achieved, but system resources are wasted
Solution Approach 1:
The L2 connection is established as a preliminary foundation before L3 WFD connections are created. This preliminary L2 connection serves as the underlying infrastructure that supports multiple L3 connections, eliminating the need to repeatedly establish and tear down connections.
Solution Approach 2:
The L2 connection serves multiple functions simultaneously - it provides both the foundational layer 2 connectivity and supports layer 3 WFD communication. This multi-functionality allows a single L2 connection to serve multiple purposes, reducing overall system resource consumption.
3Reliability
If new L2 connections are established for each WFD session, then connection security is improved, but bandwidth consumption increases
Solution Approach 1:
The existing L2 connection is made universal by allowing it to support multiple L3 WFD sessions simultaneously. This approach maintains security through proper layer 3 connection management while eliminating the need to create multiple L2 connections, thereby reducing bandwidth consumption.
Solution Approach 2:
Instead of creating physical copies of L2 connections for each WFD session, the patent uses virtual L3 connections over the shared L2 infrastructure. This virtualization approach maintains security isolation while efficiently utilizing the underlying physical connection resources.
Data Source
AI summary
Systems, methods, apparatus, and techniques are provided for establishing an application layer communications session over a layer 2 (L2) communications connection. In particular, a discovery request frame is transmitted from a first device. A discovery response frame is received at the first device, where the discovery response frame is transmitted from a second device in response to having received the discovery request frame. An application layer communications session is established between the first device and the second device while maintaining an existing L2 communications connection between the first device and the second device.