In new radio （NR） access technology, the radio access network （RAN） architecture is split into two kinds of entities, i.e., the centralized unit （CU） and the distributed unit （DU）, to enhance the network flexi...In new radio （NR） access technology, the radio access network （RAN） architecture is split into two kinds of entities, i.e., the centralized unit （CU） and the distributed unit （DU）, to enhance the network flexibility. In this split architecture, one CU is able to control several DUs, which enables the function of base-band central control and remote service for users. In this paper, the general aspects of CU-DU split architecture are introduced, including the split method, interface functions （control plane functions and user plane functions）, mobility scenarios and other CU-DU related issues. The simulations show the performance of Options 2 and 3 for CU-DU split.展开更多
文摘In new radio （NR） access technology, the radio access network （RAN） architecture is split into two kinds of entities, i.e., the centralized unit （CU） and the distributed unit （DU）, to enhance the network flexibility. In this split architecture, one CU is able to control several DUs, which enables the function of base-band central control and remote service for users. In this paper, the general aspects of CU-DU split architecture are introduced, including the split method, interface functions （control plane functions and user plane functions）, mobility scenarios and other CU-DU related issues. The simulations show the performance of Options 2 and 3 for CU-DU split.
