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. 2019 Mar 17;19(6):1335. doi: 10.3390/s19061335

Figure 1.

Figure 1

Architectural proposal, visualizing the 4G and 5G mobile control entities. UDM, Unified Data Management; HSS Home Subscriber Server; VM, Virtual Machine; PCF, Policy Control Function; PCRF, Policy and Charging Rules Function; SMF, Service Management Function; PGW-C, PDN Gateway Control; AMF, Access and Mobility Management Function; MME, Mobility Management Entity; SDD, Service Detector Device; OF, OpenFlow; NB, NodeB; E-UTRAN, Evolved UMTS Terrestrial Radio Access Network; UMTS, Universal Mobile Telecommunication System; Uu, UMTS air interface; NG-RAN, Next Generation Radio Access Network; UE, User Equipment.