Design Of Home Gateway Software Based On Linux

With the development of Internet service and broadband network, the home gateway is thought to be more and more important. The home gateway is a high tech device ensuring continuity between the home network(s) and the in home connected devices and the external world represented by a wide area network (WAN).The paper is based on this background, depending on the Linux operartion system, bring out a design and resolve schemes of the embedded software system of the home gateway. The paper begins with the general home gateway solution, and then talks about the advantage of embedded Linux system in the implementation of home gateway. Linux is an open-source operation system. It supports kinds of hardware platforms, and has many resources in Internet. For an embedded system, its application is specific and its hardware resources are limited. According to the desire of the real system, the paper gets a tidy software system including an OS and a file system. BusyBox is known as a condensed Linux tools. And it is easy to build an embedded file system using BusyBox. One of the technical problems that the home gateway should resolve is routing. GPRS supplies a convenient method to connect to Internet based on GSM. The paper supplies a method to connecting Internet via a GPRS data card. And the implementation of routing and DHCP server is also described in the paper. It is important to supply a convenient user interface to control or configure the embedded devices. So a Web server is realized in the paper.The paper realizes the software system of the home gateway, including supplying a method to connecting Internet by GPRS or WAN port, a static routing and the DHCP server, and also supplies a Web interface for users to control or configure the devices.