title: A cloud-assisted random linear network coding medium access control protocol for healthcare applications.
abstract: Relay sensor networks are often employed in end-to-end healthcare applications to facilitate the information flow between patient worn sensors and the medical data center. Medium access control (MAC) protocols, based on random linear network coding (RLNC), are a novel and suitable approach to efficiently handle data dissemination. However, several challenges arise, such as additional delays introduced by the intermediate relay nodes and decoding failures, due to channel errors. In this paper, we tackle these issues by adopting a cloud architecture where the set of relays is connected to a coordinating entity, called cloud manager. We propose a cloud-assisted RLNC-based MAC protocol (CLNC-MAC) and develop a mathematical model for the calculation of the key performance metrics, namely the system throughput, the mean completion time for data delivery and the energy efficiency. We show the importance of central coordination in fully exploiting the gain of RLNC under error-prone channels.
authors.affiliation: Department of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC-BarcelonaTECH), C./ Esteve Terradas 7, C4-202P, Castelldefels 08860, Spain. ellik@tsc.upc.edu.
authors.forename: Elli
authors.initials: E
authors.lastname: Kartsakli
authors.affiliation: Telecommunications Technological Centre of Catalonia (CTTC), Castelldefels 08860, Spain. aantonopoulos@cttc.es.
authors.forename: Angelos
authors.initials: A
authors.lastname: Antonopoulos
authors.affiliation: Department of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC-BarcelonaTECH), C./ Esteve Terradas 7, C4-202P, Castelldefels 08860, Spain. luisg@tsc.upc.edu.
authors.forename: Luis
authors.initials: L
authors.lastname: Alonso
authors.affiliation: Telecommunications Technological Centre of Catalonia (CTTC), Castelldefels 08860, Spain. cveri@cttc.es.
authors.forename: Christos
authors.initials: C
authors.lastname: Verikoukis
mesh_terms: D000465:Algorithms; D003195:Computer Communication Networks; D003198:Computer Simulation; D003695:Delivery of Health Care / Q000379:methods*; D066275:Health Information Exchange; D006801:Humans; D008390:Markov Chains; D011336:Probability; D013997:Time Factors