In the gNodeB CU/DU separation architecture, the CU and DU are connected through the N2 interface.
In the 5G bearer network, the EVPN protocol is used to replace the traditional tunneling protocol.
Both optical and electrical RHUB ports in LampSite networking support pRRU cascading.
Under NSA networking, the smallest granularity of PDCP layer business offloading is user level.
When the 4G side initiates the release in the NSA network architecture, the X2 interface signaling sees that the 4G base station sends SGNB_REL_REQUEST to the 5G base station.
