• Role of Radio Access Network (RAN), namely NodeB and RNC is replaced with ENB, so as to reduce operational and maintenance cost of the device other than the simpler network architecture
  • E-nodeB functions: all radio protocols, mobility management, header compression and all packet retransmissions¬†
  • As a network,E-UTRAN is simply a mesh of eNodeBs connected to neighboring eNodeBs with the X2 interface.