2020年4月23日 · 本文详细介绍了BBU（室内基带处理单元）、RRU（远端射频模块）和RRH（射频拉远头）的基本概念、工作原理以及它们在3G网络中的应用。 BBU负责基带处理，RRU/RRH则将基带信号转换为射频信号进行传输。

2024年10月16日 · RRU是现代移动通信基站中的一个重要组成部分，通常与BBU（Baseband Unit，基带单元）配合使用。 RRU的主要功能是在天线和BBU之间传输射频信号，并进行必要的信号处理。

2021年10月31日 · BBU，即Building Baseband Unit（基站处理单元），基站的底端是机房，就是机房里的机柜，相当于小区的“大脑”。 RRU、天线和BBU的关系如下图所示。 在5G中，基站中的硬件设备包括AAU与BBU。 AAU，即Active Antenna Unit（有源天线单元），相当于4G中的RRU和天线的结合，它可以独立完成信号的发送、接收和处理。 AAU与RRU和天线的对应关系如下图所示。 5G中兼容4G的硬件设备（RRU+天线）的存在；同样，4G中也可以使用5G中 …

2019年4月4日 · A Remote Radio Head (RRH) or Remote radio unit (RRU) is the RF circuitry of a base station enclosed in a small outdoor module. The RRH performs all RF functionality like transmit and receive functions, filtering, and amplification. It also contains analog-to-digital or digital-to-analog converters and up/down converters.

What is RRH in telecom? RRH consists of Radio Equipment Control (REC) and Radio Equipment (RE) elements. In RRH, both BBU (i.e. REC) and RF front end (i.e. RE) are connected through high speed fiber optic cables using the common public radio interface (CPRI) protocol in 4G LTE. eCPRI (Enhanced CPRI) has been introduced in 5G NR system.

The increasing network traffic and dynamic user connections have posed challenges for cellular operators in reducing operating costs while ensuring the quality of service (QoS) for users. Cloud radio access network (C-RAN) addresses these issues by separating baseband units (BBUs) and remote radio heads (RRHs), creating a centralized BBU …

A key drive towards 5G networks is the Cloud Radio Access Networks architecture (C-RAN). It consists in decoupling two main elements composing the base station:

This paper proposes semi-static and adaptive BBU-RRH switching schemes for C-RAN and evaluates their effectiveness through simulations.

2023年6月19日 · Baseband Unit (BBU) Interface: The RRH is connected to the Baseband Unit (BBU) through a high-speed fiber optic link. The BBU is responsible for processing the digital signals and managing the overall network. The RRH receives baseband signals from the BBU, performs RF processing, and transmits the RF signals to the antenna.

Functions to the left of each split option are handled by the baseband unit (BBU) and functions to the right are handled by the remote radio head (RRH). 3GPP has defined eight functional split options for fronthaul networks in Technical Report 38.801 (see Figure 3).