ADSL Modem with Integrated DHCP Server for Multi-User Access
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Solution Overview
Problem
Existing ADSL modems and routers are limited in allowing multiple simultaneous internet connections and require complex installations of dial-up software, drivers, and application programs, leading to high costs and compatibility issues, especially for applications needing authorized IP addresses.
Innovation Solution
An ADSL modem with a built-in DHCP server and PPP dial-up software that allows multiple computers to obtain authorized IP addresses and settings through the OS, enabling them to access the internet using PPPoA, PPPoE, or IPoA protocols without additional software installations, and automatically converts Ethernet packets for internet access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If PPP protocol is used between computer and ISP server for data transfer over ADSL, then data transfer capability is achieved, but installation complexity increases due to requirement of dial-up software, drivers, and application programs
Solution Approach 1:
The patent introduces a gateway device as an intermediary between the computer and the ISP server. This gateway runs a DHCP server that automatically assigns IP addresses and configures network parameters, eliminating the need for users to manually install and configure dial-up software, drivers, and application programs. The gateway handles the PPP protocol encapsulation and decapsulation, simplifying the client-side implementation while maintaining full data transfer capability over ADSL.
2Speed
If ADSL modem is used to access Internet, then data transfer rate is improved, but multiple computer simultaneous access is not possible
Solution Approach 1:
The patent designs the ADSL modem with integrated multi-functionality, combining DHCP server, PPP protocol implementation, and network address translation capabilities into a single device. This allows the modem to serve multiple computers simultaneously by automatically managing IP address allocation and protocol conversion for each connected client, thereby maintaining high data transfer rates while enabling multi-computer access to the Internet.
3Adaptability or versatility
If ADSL router with NAT is used for local network access, then multiple computer access is enabled, but cost increases and authorized IP address requirement cannot be met
Solution Approach 1:
The patent merges the functions of ADSL modem, DHCP server, and PPP protocol handler into a single integrated device. By combining these functions that were previously distributed across separate components (modem and router), the patent achieves multiple computer access capability with reduced manufacturing cost compared to using both an ADSL modem and a separate NAT router. The integrated design eliminates the need for expensive dual-device configurations while still supporting authorized IP address requirements through proper PPP encapsulation.
Data Source
AI summary
The present invention is to provide an ADSL modem for providing an IPoA, a PPPoA, or a PPPoE based dial-up networking service over Ethernet, which comprises a DHCP server coupled to at least one computer, each computer is adapted to use a DHCP provided by an OS thereof to obtain an authorized IP address and associated settings from an ISP through the DHCP server, and the DHCP server is adapted to assign the authorized IP address and the associated settings to each computer, enabling at least one computer to access the Internet without installing any driver or application program.