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4G Base Station Fronthaul Overall Solution
A typical 4G base station tower includes antennas, feeder cables, and Remote Radio Units (RRUs). The antennas connect to the RRUs via feeder cables, while the RRUs connect to the Baseband Units (BBUs) located in nearby equipment rooms via fiber optics. Usually, one BBU connects to three RRUs. The 4G base station fronthaul refers to the optical transmission segment between the RRUs and the BBU.2025-11-10
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5G Base Station Fronthaul Overall Solution
5G base stations integrate antennas and Remote Radio Units (RRUs) into Active Antenna Units (AAUs). Meanwhile, the Baseband Unit (BBU) is split into Distributed Units (DUs) and Centralized Units (CUs). The DU handles real-time physical layer processing, while the CU manages non-real-time protocol layer processin2025-11-10
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Terabit National/Transnational OTN Backbone Network Overall Solution
From a transmission perspective, carrier networks can be divided into: backbone networks, metropolitan area networks (MAN), and access networks.
The backbone network is a high-speed network that connects multiple regions or areas. Each backbone network contains at least one interconnection point with other backbone networks. Different network providers (carriers) maintain their own backbone networks to link their networks across different regions.2025-11-10
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Project: Data Bandwidth Operator Project in a Southeast Asian Country
The customer is an internet access service provider in Country T, Southeast Asia, specializing in providing broadband access services to local enterprises and households. The customer's headquarters is located in City A of Country T.2026-05-25
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Interconnection of Two Server Rooms for a State Grid Corporation in Northeast China
State Grid Corporation of China was established on December 29, 2002. It is a wholly state-owned company directly managed by the central government in accordance with the Company Law. As an ultra-large state-owned key backbone enterprise related to national energy security and the lifeline of the national economy, its core business is the investment, construction, and operation of power grids. Branch offices of State Grid are located in almost every province and city.2026-05-25
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Optical Communication Transmission Project for a Railway Section of China Railway Nanning Bureau
China Railway Nanning Bureau Group Co., Ltd., referred to as China Railway Nanning, formerly known as Nanning Railway Bureau, is a limited liability company primarily engaged in railway passenger and freight transport services. Data from three existing railway stations needs to be directly transmitted back to the central server room at the Nanning headquarters, with sufficient fiber optic resources available.2026-05-25
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