What is a baseband unit (BBU)?

The baseband unit (BBU) is a crucial component in mobile base stations, handling tasks like signal processing, resource allocation, and protocol management to ensure efficient communication between mobile devices and networks. It also ensures security through encryption and manages interference and network operations.

How many BBus does a 5G micro base station have?

In this study, a single 5G macro base station is equipped with a fully loaded BBU and three AAUs (channel number 64T) and a single 5G micro base station is equipped with a BBU with a 4T baseband board and three RRUs (channel number 4T). Fig. 2. The system boundary of assessing the life cycle impacts of 5G base station.

Why should a BBU be scalable?

Scalability in ensuring that the BBU can scale to support multiple types of radio units and new deployment scenarios to meet the growing demand for mobile services. Energy efficiency to reduce the carbon footprint of mobile base stations.

What equipment does a micro base station use?

The AAU of the micro base station adopts the Remote Radio Unit (RRU) and antennas (Simic, 2007). Equipment parameters vary by manufacturers (Yu et al., 2021). Data from four manufacturers (see Table S2) were collected to measure their uncertainty through Monte Carlo simulation.

How can base stations be improved?

Currently, limited research (Tala't et al., 2017) is focused on improving the power supply mode of base stations, such as replacing traditional thermal power generation with renewable energy (photovoltaic systems, wind power) and equipping micro base stations with solar cells.

Is 5G suitable for building large-scale macro base stations?

The 5G base station can be roughly divided into a macro base station, a micro base station, and a room subsystem according to the coverage range. The coverage capacity of 5G is much lower compared to 4G due to its high frequency. Thus, 5G is not suitable for building large-scale macro base stations (Zhou, 2017).