Direct Wireless Client-to-Client Communication via Access Point Bypass
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Solution Overview
Problem
In wireless networks, existing technologies reduce available bandwidth by requiring data to be transmitted through an access point even when sender and recipient are directly reachable, and they lack direct client-to-client communication capabilities without involving the access point, which limits security validation and public network access.
Innovation Solution
Wireless stations establish a direct client-to-client connection without involving the access point by creating a direct link channel using probe requests and responses to exchange capability information, allowing them to communicate directly while maintaining infrastructure connections for security and public network access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted through the access point in infrastructure mode, then security credentials can be validated and public network access can be provided, but the available bandwidth is reduced by one-half due to double transmission
Solution Approach 1:
The patent segments communication paths into two types: infrastructure mode for security-critical communications (authentication, network access) and direct mode for data-intensive communications. This allows security functions to be performed through the access point while data transmission occurs directly between stations, resolving the contradiction between security validation and bandwidth utilization.
Solution Approach 2:
The access point acts as an intermediary for security credential validation and network access control, but not for all data transmission. The patent enables stations to bypass the access point for direct data communication while still relying on it for security functions, thus maintaining security while improving bandwidth efficiency.
2Productivity
If direct communication is established between wireless stations without involving the access point, then bandwidth utilization improves, but the ability to use common access point for security validation and public network access is lost
Solution Approach 1:
The patent implements dynamic communication mode selection where stations can switch between infrastructure mode and direct mode based on the type of communication needed. Security-critical communications use infrastructure mode with access point involvement, while data communications use direct mode, allowing the system to adapt to different requirements and resolve the contradiction between bandwidth utilization and security validation.
3Reliability
If all data is transmitted through the access point even when sender and recipient can reach each other directly, then security and network access are maintained, but communication efficiency is reduced
Solution Approach 1:
The patent applies different communication qualities to different types of data traffic. Security-critical traffic maintains infrastructure mode transmission through the access point, while data traffic utilizes direct transmission when possible. This local differentiation of communication quality resolves the contradiction between maintaining security and improving communication efficiency.
Data Source
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AI summary
A wireless station is connected to a wireless network through an access point and can establish a direct client-to-client connection to a second wireless station. The wireless station can communicate directly with the second wireless station without involving the access point. The wireless station communicates with the wired network and with other wireless stations through the access point. The second wireless station may have an infrastructure connection to the access point or may be independent.