Mesh Testbed


Physical mesh topology

The Mobile Networks Department has recently built a Wireless Mesh Network (WMN) testbed. Currently, the testbed consists of a static backbone of Wireless Mesh Routers (WMRs) and Mobile Nodes (MNs). The static backbone currently is composed of 12 WMRs deployed over an approximate area of 1200 meters located in the first floor of the CTTC building (see figure 1). Backbone nodes are built based on a mini-ITX board, able to mount up to four mini-PCI wireless cards (802.11a/b/g). One of these cards may be used to connect MNs consisting of laptops to the WMN.
The research over this testbed is mainly focused on the development of wireless network protocols for the future Internet. More specifically, the focus lies on advanced routing and location management protocols (e.g., VIMLOC). The testbed offers a more accurate tool for validation of wireless network protocols with respect to network simulators, which often may not faithfully represent the complex behavior of real wireless environments and, thus, do not always deliver exact results.
The WMN testbed is integrated within the EXTREME Testbed® which provides features for fast development of wireless network protocols, such as experiment automation and access to the Internet. Moreover, the Mobile Networks Department is trying to integrate the current WMN testbed with the HSPA/UMTS testbed through the use of femtocells. As a consequence, the resulting integration will leverage the development and evaluation of network protocols for hybrid wireless networks including WMNs and HSPA/UMTS.

Mesh node Mesh link
Multihop mesh network