Wireless Base Station Development

The TKN Group tests, measures and develops link and network layer protocols and extensions designed to raise wireless network performance.

For our experimental wireless LAN setup environments, the mobile host is generally some PC-type notebook computer, where we are able to implement protocol changes in the link or network layer through the use of open source operating systems such as Linux. The commercially available wireless base stations, however, have designated hardware and a proprietory programming interface. In order to be able to implement such wireless base station protocol extensions, we had to build our own base station.

Base Station Features

The base station is implemented on an ordinary PC running Linux. It is a generic link level transparent bridge module with special extensions for wireless devices. It can be used both as a testbed for link layer extensions, and also as a low cost wireless base station, running in the background of any PC workstation, needing only a wireless adapter card.

In short terms:

Different protocols have already been implemented: the Snoop protocol and a new approach called remote socket architecture.

Figure 1: Schemativ overview of wireless base station and Snoop agent