In this paper we consider Delay Tolerant Network (DTN) as a technology to implement a future network in a People Centric Networking paradigm, using Active RFID carried by people that exchange information with each other. We propose a novel and real Neighbor Discovery (ND) phase on active RFID based DTN using Open Beacon devices. In particular, we propose a solution using the Sift distribution on a probabilistic persistent approach called Sift-Persistent. We simulated P-Persistent, Aloha and our solution using our customized Java simulator. We implemented Sift-Persistent and P-Persistent on Open-Beacon devices, comparing the simulation results and test-beds. Moreover, simulations and real testbed show a coherent behavior validating our proposal in the RFID context. Performance evaluations have been tested in terms of discovered neighbors.

ProvinciaSense is a proof-of-concept of the integration of both static and mobile sensor nodes with ProvinciaWiFi, a network which currently hosts more than 1100 WiFi Access Points (APs) serving Rome and other 120 cities with about 4.5 millions of citizens. The simple and cost effective integration of sensor nodes with a big number of ProvinciaWiFi APs will allow us to deploy one among the biggest available testbeds for wireless sensor networks and to support the implementation of effective smart cities services.