SSID Priority Encoding for Ad-Hoc Wireless Network Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In ad-hoc wireless communication mode, devices face challenges in determining which wireless network to connect to when the IP address of the master unit changes, leading to confusion among slave units due to accumulated SSID information, and security risks from unauthorized access.
Innovation Solution
Implement a wireless communication system where terminals generate and update SSIDs based on priority information, including IP addresses, and use beacon signals to facilitate connection while incorporating firewalls and check information to ensure authenticity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the master unit changes its IP address and generates a new SSID, then the wireless network can maintain proper identification and communication, but slave units accumulate multiple SSID candidates and cannot determine which network to connect to
Solution Approach 1:
The master unit embeds priority information in the SSID before slave units attempt connection. This preliminary encoding of connection priority allows slave units to automatically select the correct network without complex determination logic, resolving the contradiction between reliable network identification and connection determination complexity
Solution Approach 2:
Priority information acts as an intermediary element within the SSID that mediates between the master unit's IP address changes and the slave units' connection selection. This intermediary enables automatic correct network selection without requiring slave units to perform complex scanning and determination procedures
2Ease of operation
If the SSID includes the IP address for easy identification, then communication setup is simplified, but unauthorized access and security risks increase
Solution Approach 1:
The patent applies different quality characteristics to different parts of the SSID structure. The SSID contains both the IP address (for ease of connection) and priority information (for security and correct network selection). This local differentiation of functions within the SSID allows simultaneous achievement of easy operation and security by ensuring slave units connect to the intended network based on priority matching rather than just IP address matching
3Quantity of substance
If slave units perform scanning to acquire SSID information, then they can find available networks, but the process takes time and delays connection establishment
Solution Approach 1:
The master unit performs preliminary action by embedding priority information in the SSID before slave units scan. This allows slave units to quickly identify and connect to the correct network during scanning without requiring additional time for network determination, reducing connection establishment time while maintaining full SSID information availability
Data Source
AI summary
A wireless communication system performs ad-hoc mode communication, wherein a first terminal includes an identification information storing section, an IP address storing section, an SSID generating section generating a service set identifier, a beacon signal generating section generating a beacon signal including an SSID, and a priority information updating section updating priority information, and the second terminal includes an SSID acquiring section acquiring the SSID from the beacon signal, memory storing the SSID, an SSID selecting section selecting one SSID based on the priority information, an IP address acquiring section acquiring the IP address of the first terminal from the selected SSID, and a communicating section making a connection to the first terminal by using the acquired IP address.