This is very vast topi, 5G have more advantage for from the network perspective.
Like, NG-ENB can connect more no of users than LTE as it is using more BW .
Single NG-ENB can handle different kind of UE's like URLLC ,eMBB,mMTC etc where as in LTE single ENB can handle only one type of UE's either NB-IOT or normal commercial UE.
5G uses mmWave for higher data rate.
5G Slot configuration is more flexible.
5G uses masive mimo ,
5G uses Beam forming for better user experience