Publish-subscribe in mobile information centric networks: Modeling and performance evaluation

Emerging Internet of Things (IoT) services require efficient content dissemination mechanisms based on the publish-subscribe model in static and mobile scenarios. The Information-Centric Networking (ICN) architecture can successfully satisfy these requirements. In its native formulation, ICN can fulfill publish-subscribe data dissemination and natively supports mobile applications. At the time of this writing, several ICN-based solutions have been proposed to implement the publish-subscribe model, but none of them is explicitly tailored to mobile scenarios. To bridge this gap, the present contribution: (i) formulates new pull-based and push-based publish-subscribe communication schema, able to support user mobility in ICN networks; (ii) provides analytical models describing the communication overhead they incur, (iii) investigates their accuracy through computer simulations. The conducted study considers well-known benchmark network topologies, real IoT monitoring services, and standardized settings for urban and rural environments. From one side, obtained results validate the conceived analytical models. From another side, they highlight pros and cons of pull-based and push-based approaches by emphasizing the conditions under which one scheme should be preferred to the other one.