Cartography Gathering Driven by the OLSR Protocol

Nowadays, the location awareness becomes a ubiquitous requirement for several computing applications. The utilization of such knowledge in mobile ad hoc networks is primarily limited by the scarcity of their resources. In this paper, we propose two cartography gathering schemes (OLSR-SCGS and OLSR-ACGS) that make use of the seminal OLSR signaling in order to endue nodes participating in the MANET with location awareness. The first proposed scheme (OLSR-SCGS) is inspired from the operation of OLSR during the process of routing table calculation. The simplicity of this scheme makes it subject to several limitations that we avoid in the second scheme (OLSR-ACGS). In this latter scheme, the nodes become able to identify the freshest position among the available ones thanks to a dedicated time stamping approach. Conducted simulations show the effectiveness of the two proposed approaches. Nevertheless, simulations portray the superiority of the second proposed scheme (OLSR-ACGS) regarding the first one (OLSR-SCGS) when the network dynamics increases. Through simulations, we show that the validity of the collected cartography is impacted by several factors such as the tolerated distance parameter, the frequencies of OLSR control messages and the network extent.