Reason For Cu Du Split Architecture Its operation is controlled by the cu. distributed unit (du) also known with other names like rrh rru re ru. the cu du split options: central unit (cu) and distributed unit (du) functional split options. as a part of study item for new radio (nr), 3gpp started studying different functional splits between central and distributed units. The gnb consists of a cu and one du connected to the cu via fs c and fs u interfaces for cp and up respectively. a cu with multiple dus will support multiple gnbs. the split architecture enables a 5g network to utilize different distribution of protocol stacks between cu and dus depending on midhaul availability and network design.
Rel 15 Ng Ran Architecture With A Cu Du Split Deployment Download Published mar 14, 2023. follow. gnb is split into cu and du for the scalability and du offloading. in order to overcome an explosion in traffic usage, 5g largely makes use of higher frequency. That is, to which layers of the protocol stack are mapped to an ru, du or cu. the split between du and ru is now formally defined by 3gpp. this new split ran architecture makes it possible to deploy the du and cu functions either centrally or at the edge close to the ru depending on latency and backhaul bandwidth requirements. In release 15, 3gpp, defined a new, flexible architecture for the 5g ran, where the base station or gnodeb (gnb) is split into three logical nodes: the central unit, (cu), the distributed unit, (du) and the radio unit, (ru), each capable of hosting different functions of the 5g nr stack. figure 1 shows the baseband unit (bbu) — a proprietary. 5g ran cu du network architecture, transport options and dimensioning, page 4 (35) version 1.0, 12 april 2019 1 introduction 1.1 motivation the 5g ran has a number of architecture options, such as how to split ran functions, where to place those functions, and what transport is required to interconnect them. in [1] an overview was.
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