Ⅰ. Overview of Networking Requirements for Construction Machinery

Specific Requirements：

• Full-area continuous coverage to eliminate blind spots and ensure network availability across all regions
• High reliability, low latency and low packet loss rate
• Physical isolation and high-level security
• Large bandwidth to support real-time video, point cloud and sensor data transmission
• Centimeter-level high-precision positioning and attitude sensing
• Seamless roaming at high moving speed, supporting smooth handover between base stations without service interruption
• Integrated access for multiple terminals to avoid repeated network access configuration
• Industrial-grade adaptability to harsh environments with priority given to stability and performance
• Easy deployment and operation & maintenance, enabling fast installation, commissioning and delivery
• Centralized management and unified control of all network resources

Ⅱ. Wireless Technology and Product Selection

1. iMAX Wireless Metropolitan Private Network System (Backbone Network for Unmanned Operations)

Core Advantages：

• Seamless roaming at high-speed movement; VRRP hot backup and data mirroring achieve zero packet loss.
• Industrial-grade, telecom-grade and military-grade stability, supporting 24/7 non-stop operation.
• Physical isolation with multi-layer security encryption.
• Industrial-grade wide temperature tolerance, dustproof and vibration-resistant.
• Large bandwidth supports real-time transmission of video, control commands and sensor data.

It is highly suitable for building metropolitan private networks in parks, ports and mines, and serves as the preferred solution for networking of unmanned mechanical equipment.

2. 4G/5G Dual-Mode Gateway System (Wide-Area Construction Machinery Dual-Network Convergence)

iMAX-4GW300 and iMWB5GW2000D dual-mode gateways adopt dual-link hot backup of private network plus public network. They support uninterrupted networking for the full scenario of on-site core operation and off-site transit of construction machinery, balancing security and wide coverage.

Core Advantages:

• Intelligent dual-network switching, keeping always online throughout the whole process
• High bandwidth and high concurrency capability
• Dual-link redundancy with automatic fault self-healing
• High outdoor protection grade, adaptable to harsh environments

It is applied to build converged communication with private network + public network dual links. Inside parks (mining areas, factory areas), a wireless metropolitan private network with high reliability, high stability and high security is adopted. In public areas outside the park, VPN plus cloud switching technology is used to construct a virtual private network, and end-to-end encryption realizes relatively secure and stable network interconnection.

3. ICSE1000 Integrated Communication and Sensing System

(All-in-one Gateway for Unmanned Operation Networking, Positioning and Sensing)

It is an industrial-grade vehicle-mounted integrated terminal, which deeply integrates iMAX metropolitan private network communication, Beidou RTK centimeter-level positioning and motion attitude sensing modules. It provides three core capabilities required for unmanned operations in one stop: networking, positioning and sensing.

Core Advantages：

• Integration of communication, positioning and sensing
• RTK centimeter-level positioning and high-precision attitude measurement
• IP67 high protection rating, wide temperature adaptation and vibration resistance
• Simplified hardware architecture reduces unmanned transformation costs

It serves as the core multimode gateway for remote control and unmanned operation of unmanned forklifts, unmanned mining trucks, unmanned loaders, unmanned excavators and other equipment.

4. Huanyou Low-Frequency MESH Ad Hoc Network System(Non-Line-of-Sight Private Network On-the-Move Interconnection)

Adopting low-frequency + centerless MESH ad hoc network (typical frequency: 1.4GHz), it is specially designed for scenarios such as fire rescue, emergency disposal, non-line-of-sight occlusion and base-station-independent environments. With strong diffraction capability, self-healing performance and fast networking deployment, it is highly adapted to the communication demands of fire fighting and emergency vehicles.

Core Advantages:

• Strong non-line-of-sight coverage with signal penetration and obstacle bypass capability
• Fast network access upon power-on, no base station required
• Rapid emergency networking with multi-terminal collaboration among vehicle-to-vehicle, vehicle-to-drone, and vehicle-to-command box
• Wide temperature adaptability and high protection grade, supporting vehicle DC power supply

It is applicable to non-line-of-sight remote control scenarios with ultra-long communication distance, complex environmental structures and a small number of mechanical devices.

III. Scenario Solutions for Construction Machinery Remote Control and Unmanned Operation

1. Wireless Private Network Solution for Loaders and Excavators in Large Port and Cargo Yards

Loaders, excavators and bulldozers are the most commonly used construction machinery in construction sites, port operations, mining exploitation, infrastructure projects and other scenarios.

Taking bulk cargo terminals and freight yards as an example, loaders and excavators feature scattered operation areas, harsh working environments, high mobility and inherent operational risks. Realizing remote control and unmanned operation of such machinery imposes extremely high requirements on network stability, anti-interference performance and service adaptability.

Relying solely on 4G/5G public networks is prone to service interruption and fails to guarantee data security, unable to meet the demands of machinery scheduling and operation data transmission. Dedicated wireless solutions are urgently needed to support industrial digital upgrading.

Following the core principles of stability priority, flexible adaptation, safety and controllability, this solution builds a dedicated wireless communication network to solve the pain points of insufficient coverage, unstable signals and vulnerable data leakage existing in traditional public networks. It provides reliable communication support for construction machinery scheduling, operation monitoring and remote management.

The typical topology diagram of integrated communication and sensing application for remote control and unmanned operation of loaders and excavators is shown as below:

 

The solution adopts the iMAX wireless private network module of the ICSE1000 Integrated Communication and Sensing System as its core communication architecture. Based on independently controllable private protocols, it achieves stable coverage of core operation areas, ensuring real-time transmission of scheduling commands, operation data, and video streams with zero packet loss and no latency. The iMAX Wireless Metropolitan Area Network (WMAN) private network supports VRRP high-reliability technology, enabling multi-link hot standby and redundant design to significantly enhance reliability.

For construction machinery operating across regions or during off-site transportation, customized public network backup can be configured to maintain uninterrupted connectivity throughout the process, balancing core service security with wide-area coverage. The ICSE1000 integrates a BeiDou high-precision positioning module, eliminating the need for additional hardware installation to enable centimeter-level RTK positioning, real-time tracking, and trajectory playback. A single device integrates three core capabilities: dedicated communication, precise positioning, and status sensing, fully meeting the end-to-end requirements for unmanned construction machinery operations across all scenarios.

If high-precision positioning and attitude sensing have already been resolved, only the high-reliability private network or “private + public network” dual-mode access needs to be addressed. The typical topology diagram of its networking structure is as follows:

2. Remote Control & Unmanned Networking Solution for Mining Machinery

In open-pit mines and waste dumps, mining equipment such as haul trucks, excavators, loaders, and drilling rigs operate in harsh environments with dispersed work sites. By adopting the iMAX private network + ICSE1000 integrated communication and sensing system, the solution delivers physical isolation, high stability and reliability, and centimeter-level positioning capabilities. It supports remote operation, unmanned driving, data acquisition, and intelligent dispatching, addressing key pain points of public networks including instability, security risks, and insufficient coverage.

The application model of this solution is similar to the previous one and will not be repeated here. The typical topology diagram of the integrated communication and sensing application for remote control and unmanned operation of mining excavators and other machinery is as follows:

3. Networking Solution for Remote Control and Driverless Operation of Mobile Machinery in Port Bulk Clearance

Loaders, excavators and other equipment used for port bulk clearance (referred to as mobile machinery) involve high-risk operations. They work year-round in dust and metal powder environments, causing severe harm to workers’ health. This is currently the most urgent engineering machinery scenario requiring remote control and unmanned operation.

As a closed scenario with heavy metal dust, conventional wireless communication cannot meet the stability requirements. Based on Multi-Link Data Mirroring (MLDM) technology, Guoxin Longxin adopts the iMAX dual-band dual-mode wireless system, together with customized port-bin relay wireless base stations and monitoring units, to achieve stable networking and real-time monitoring.

The schematic diagram of typical high-reliability networking for mobile machinery is shown below:

It should be noted that if the operating conditions of some mobile machinery are extremely harsh and the dual-band dual-mode system still cannot meet the requirements of low latency and ultra-low packet loss rate, Guoxin Longxin network can be expanded to a quad-band quad-mode wireless system. It further improves anti-interference capability, resistance to metal dust interference, and mobile communication performance through multi-link aggregation.

IV. Overview

Guoxin Longxin’s networking solution for remote control and unmanned operation of construction machinery directly addresses the core communication pain points of engineering machinery and equipment in complex environments such as ports, mines, construction sites and open field areas. It solves key challenges including coverage blind zones, link interruption, high latency, packet loss, inaccurate positioning and data security risks, and provides a solid private network foundation for remote operation, unmanned driving, intelligent scheduling, status monitoring and data collection.

For the network reliability of the iMAX private network, please refer to How to Ensure High Reliability of Wireless Network Systems.

Our 4G/5G gateways support standard 4G/5G private networks; for an introduction to 5G private networks, please refer to What Is a 5G Private Network?.

For more solution details and technical specifications regarding unmanned driving, see High-Reliability Wireless Private Network Solution for Unmanned Driving.

In actual solution design, Guoxin Longxin can flexibly combine multiple products and technologies such as the iMAX wireless private network, 4G/5G dual-mode access, and ICSE1000 integrated sensing and communication system. It fully supports the intelligent and unmanned upgrading of construction machinery in scenarios including ports, mines, factories and infrastructure construction sites, and provides full-process services covering solution design, deployment and operation & maintenance.