5G Stuff: Bearer types in for DC between NR and LTE

Few words about DC:
         When UE gets connected to 2 or more eNBs at the same time for user plane, one being the Master eNB (MeNB) and the rest are called Secondary eNBs (SeNB). Depends on User plane (UP) architecture, bearer level or packet level splits are implemented in the RAN/CN.

Similarly to support DC between NR and LTE, the following bearer types are possible

         - Split bearer via MCG (Master Cell Group)

         - SCG bearer

         - Split bearer via SCG (Secondary Cell Group)

The following reconfiguration of bearer types are supported

-     reconfiguration between an SCG bearer and an MCG bearer;

-     reconfiguration of an SCG bearer between two secondary nodes;

-     reconfiguration between an MCG bearer and an MCG split bearer.