In 4G network, the optical modules used to connect bbu and rru are mainly Gigabit to 10 Gigabit optical modules; in 5G network, the interfaces between bbu and rru are such as cpri (Common Public Radio Interface) or ecpri (Enhanced Common Public Radio Interface). The base station can be divided into two modules: the RRU for transmitting signals and the BBU for processing signals. This process ensures stable signal transmission over long distances and in complex environments. 25G SFP optical module adopts the wavelength of 850nm, with an operating. The RRU is a remote radio unit. 2 RRU Cables The RRU cables include the PGND cable, power cable, AISG multi-wire cable, AISG extension cable, CPRI optical cable, RF jumper, and alarm cable. Issue 08 (2009-06-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co. It presents the exterior and describes the ports, functions, cable types, connector specifications, and cable connections of the RRU. In 5G networks, CPRI is also upgraded to eCPRI.
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