Remote Wireless Adapter for Reliable Failover Connectivity
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Solution Overview
Problem
Existing network architectures with wireless failover connections face limitations due to the need for 3G/4G modems to be installed in areas with strong signal coverage, which can be weak or blocked within building structures, limiting the flexibility and reliability of failover connections.
Innovation Solution
A remote wireless adapter is used to establish a tunnel with a network security device, allowing outgoing traffic to be sent through a 3G/4G modem placed in a location with stronger signal coverage, while incoming traffic is forwarded back through the tunnel to the network security device, enabling flexible placement of the remote adapter within the network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If 3G/4G modems are directly inserted into USB ports of network security device, then the connection is simple to implement, but the connection reliability deteriorates due to weak or blocked signal inside building
Solution Approach 1:
The system is divided into two separate components: a remote wireless adapter that contains the 3G/4G modem and is placed in a location with strong signal coverage, and a network security device that remains in the computer room. These segments communicate through a wired connection, allowing the modem to be physically separated from the main device to overcome signal blocking issues while maintaining installation simplicity.
Solution Approach 2:
A remote wireless adapter acts as an intermediary device between the network security device and the cellular network. It is placed in a remote location with strong signal coverage and connects to the network security device through a wired connection, thereby mediating the connection issue by separating the wireless modem from the main device while ensuring reliable signal reception.
2Reliability
If remote wireless adapter is placed at remote location with stronger signal, then connection reliability is improved, but device complexity increases due to tunnel setup and network configuration
Solution Approach 1:
The remote wireless adapter automatically performs tunnel establishment and network configuration without requiring manual intervention. The device autonomously sets up the wireless connection, creates the tunnel to the network security device, and configures routing parameters, thereby improving connection reliability while minimizing the complexity burden on the user.
Solution Approach 2:
The remote wireless adapter pre-establishes the tunnel connection and configures network parameters before failover is needed. By performing these setup actions in advance, the system ensures that when the primary connection fails, the backup wireless connection is already ready and configured, improving reliability without requiring complex real-time configuration.
3Stability of the object's composition
If remote wireless adapter is connected through cable to network security device, then connection stability is improved, but installation flexibility deteriorates due to cable length limitations
Solution Approach 1:
The system changes the connection parameter from a direct USB connection to a wired network connection through Ethernet. This allows the remote wireless adapter to be placed anywhere within network range, significantly increasing installation flexibility while maintaining connection stability through the wired Ethernet link, which can span much longer distances than USB cables.
Data Source
AI summary
Systems and methods are described for connecting a private network to the Internet through a remote wireless adapter. According to one embodiment, a remote wireless adapter sets up a tunnel with a network security device through a local area network (LAN) adapter of the remote wireless adapter and sets up a wide area network (WAN) connection through a wireless modem which is connected to the wireless adapter. The remote wireless adapter receives an outgoing data packet sent by the network security device through the tunnel and writes the outgoing data packet to the WAN connection. The remote wireless adapter also receives an incoming data packet through the WAN connection and forwards the incoming data packet to the network security device through the tunnel.