Our smart factory indoor private network uses TD-LTE base stations. LTE's low latency and high data rates provide reliable AGV control and support efficient, accurate and flexible material handling, improving productivity and competitiveness.

Project Highlights

• The EPC control plane is deployed in the control center, while data planes are deployed in individual factory data centers. This separation reduces server load and preserves data security and independence.

• A customized GPS receiver connects to base stations over Category 5 cable, addressing signal attenuation in long conventional GPS feeder cables.

• Private eNodeBs use configurable dedicated frequencies, avoiding interference from public networks.

• The LTE network uploads live video from AGV and positioning cameras. Image recognition and analysis, together with AGV navigation control, plan routes and guide vehicles to complete deliveries in real time.

Main System Equipment

LTE Base Station (eNodeB)

The base station connects the wired and wireless LTE networks. Compared with conventional 2G/3G Node B equipment, it integrates some RNC functions to reduce protocol layers. Its functional architecture includes baseband control and radio frequency units, with the following features:

• Advanced LTE technologies including OFDM, MIMO and scheduling

• BBU and RRU integrated into one enclosure for compact deployment in specialized environments.

• Electrical and optical IP/Ethernet transport between base stations and the core network

• IEEE 1588v2, GPS and BeiDou synchronization

eNodeB Specifications

Evolved Packet Core (EPC)

The EPC is a highly integrated server designed to 3GPP Release 9 standards with standardized interfaces. Its integration and reliability meet industry-specific private network requirements and deliver high-speed broadband services. Features include:

• 3GPP R9 compliance, a general-purpose ALL-IP hardware/software platform, support for EPS mobile networks and E-UTRAN access, and an integrated architecture that reduces operating and maintenance costs.

• Integrated MME, S-GW and P-GW functions as standard; PCRF and HSS can also be integrated in one chassis to meet compact private network requirements.

• Standard S1 connectivity to eNodeB and SGi connectivity to external networks, with a shared management platform for seamless E-UTRAN and existing network integration. Electrical and optical IP/Ethernet transport is supported.

• Hardware separation of control and data planes enables flexible distributed deployment while preserving the independence and security of control and user data.

• Dual-server hot standby improves EPC reliability. If one EPC fails, services can transfer within 1 second to maintain LTE network availability.

EPC Specifications