How Early Mobile Devices Accessed the Internet Using Split Proxies

A 1996 system that made the early web usable on slow, unreliable wireless connections by using two 'proxy' servers to shrink and simplify data before sending it.

What it covers

This patent describes a split proxy system designed to bridge the gap between a client (like a mobile device) and a server (like a web server) over slow or high-latency networks. It uses a local proxy on the user's device and a remote proxy near the server to act as intermediaries. When a user makes a request, the local proxy converts the standard web protocol into a specialized transport protocol, which is more efficient for unreliable connections. The remote proxy receives this, converts it back to standard web protocol to talk to the server, and then compresses or filters the resulting data before sending it back to the device. This process prevents the 'chattiness' of standard web protocols from stalling on slow connections.

What it doesn't cover

• —Does not cover direct connections between a client and server that do not use an intermediate proxy pair.
• —Does not cover standard TCP/IP communication that lacks the specific conversion to a script-based transport protocol.
• —Does not cover hardware-only solutions that do not involve the software-based proxy translation steps.
• —Does not cover modern high-speed cellular protocols (like 5G) that handle latency at the hardware level.

The clever bit

The innovation lies in 'encapsulating' standard web requests into a custom script transmission, effectively hiding the complexity of the web from the unreliable link between the two proxies.

Why it matters

In the mid-90s, the web was built for fast, wired connections. This patent was critical for the early mobile internet, allowing devices with limited processing power and slow modems to load web pages without timing out. It laid the groundwork for how mobile browsers optimize data today.

Real-world examples

• 1.Early WAP (Wireless Application Protocol) gateways
• 2.Mobile data compression proxies used by early browsers like Opera Mini
• 3.Modern enterprise VPNs that optimize traffic for remote workers