What is EN-DC (E-UTRAN New Radio - dual connectivity)?

ENDC permits client hardware to associate with an LTE enodeB that acts as a master node and a 5G gnodeB that acts as a secondary node. ENDC permits 4G LTE and 5G transmission capacity to be utilized simultaneously, and when clients endeavor to download content, like a video, the speed at which that video transfers comes from both 4G LTE and 5G at the same time. ENDC will allow devices to get to both LTE and 5G all the while on a similar spectrum band: Band 41/2.5 GHz.