LoSeRO: A Locality Sensitive Routing Protocol in Opportunistic Networks with Contact Profiles

Mobility trajectories of users contain personal information that when analyzed may reveal relevant data usable as message-sharing condition, e.g., interests in common or similar mobility patterns. In particular, leveraging on mobility patterns, in [12] we designed and presented a Geo-casting routing protocol called LoSeRO for opportunistic networks, which uses knowledge of the locations most frequently visited by a user to route messages. LoSeRO forwards messages-in a multi-casting way-to all users who have a mobility profile that intersects the packet's destination zone. LoSeRO presented a relative good performance value, however, to improve its performances, in this paper our contribution is to propose an upgraded version of our earlier proposed protocol, termed as LoSeRO v2. In particular, it upgrades the traditional working fashion of LoSeRO by extending the knowledge of the most frequented locations to those users not only directly met, i.e., two-hops away. With this purpose, through simulations, we compare the performance of LoSeRO v2, with LoSeRO and other existing routing geo-casting protocols, and we illustrate how LoSeRO v2 achieves enhanced performances comparing precision, coverage and additional metrics.