基于Linux内核在网络层实现移动终端的漫游通信

Roaming Communication of Mobile Terminals on Network Layer Based on Linux Kernel

传统移动通信在网络的第一层实现,较大程度上依赖通信介质和设备。我们利用Linux内核的开放性,嵌入内核编程,通过对通信数据包的截取和重新编辑,在网络层解决了移动终端的漫游通信问题。该解决方案可以克服因为通信媒介的异质性而带来的网络复杂化和对于物理介质的依赖性,使得漫游本身对下层的物理链路和上层的通信协议都是透明的,在未来3G通信时代有着重要的意义。

The traditional mobile terminal communications are implemented on the first layer of the network, which makes mobility depending on the medium and the device greatly. In this paper, we utilize the opening of Linux, directly program in the kernel, and make the mobile terminal communicate with other nodes on network layer by intercepting and re-editing the datagram. This scheme can shield the heterogeneity of the communication medium, which has made the network more complicated and more reliant on physical medium. This implementation has important significance in the future 3G generation, for roaming becomes transparent to both the physical layer and the transport layer.'