All-Domain Emergency Intelligent Terminal and Converged Dispatch Solution

Overview

When major natural disasters or emergencies cause widespread paralysis of terrestrial communication networks, traditional emergency command systems face severe challenges of losing contact and control. How to quickly establish reliable communication links under conditions of road damage, power outage, and network failure, enable two-way information exchange between frontline rescue personnel and rear command centers, and transmit on-site situations in real time to a visual command platform has become a key issue in the modernization of emergency management.

The All-Domain Emergency Intelligent Terminal and Converged Dispatch Solution uses satellite call-out terminals and emergency intelligent terminals as front-end sensors, converged communication technology as the central link, and a visual GIS dispatch platform as the command brain to build a new-generation emergency command communication system featuring "space-air-ground integration, full-scenario coverage, and second-level response." This solution completely breaks down barriers between different communication standards and equipment from different departments, unifying heterogeneous systems such as satellite phones, broadband ad hoc networks, LTE private networks, public network trunking, analog intercom, and video conferencing into a converged dispatch platform, enabling seamless cross-network, cross-terminal, and cross-level collaborative command.

Core Architecture and Key Technologies

Front-End All-Domain Perception and Call-Out System

The front end of the solution consists of three types of core terminals. Satellite call-out terminals are based on Tiantong-1, Inmarsat, or high-throughput satellite links, with dual-mode satellite communication and BeiDou-3 short message capabilities. In extreme environments without terrestrial signals, they can still ensure uninterrupted voice call-out, short data, and location reporting services. The terminals support one-key SOS, scheduled automatic reporting, remote wake-up, and silent monitoring, ensuring proactive discovery and precise call-out of missing personnel.

All-domain emergency intelligent terminals integrate broadband ad hoc network modules, 4G/5G public network modules, WiFi/Bluetooth access, and BeiDou high-precision positioning on top of satellite communication, enabling temporary construction of on-site emergency local area networks. These terminals serve as on-site information aggregation nodes, uniformly transmitting data from various IoT devices such as drones, pan-tilt cameras, smart helmets, and vital sign monitoring wristbands.

Visual GIS dispatch clients can be deployed on rugged handheld terminals, mobile command vehicles, or drone-mounted edge computing platforms, supporting offline maps and real-time layer overlays, allowing on-site commanders to perform route planning, location annotation, and force plotting based on local GIS situations even without public network access.

Converged Dispatch Engine

The converged dispatch platform is the operational core of the entire solution. It adopts SIP softswitch plus microservices architecture, and through protocol adaptation gateways, uniformly integrates voice and PTT services from TETRA, PDT, DMR intercom systems, PSTN fixed lines, satellite phones, and dedicated mobile communication networks, enabling mixed audio/video full-media dispatch. The platform supports intelligent routing policies that automatically select the optimal communication channel based on factors such as caller/callee location, link quality, and user priority.

The GIS visual dispatch engine deeply couples geographic information with communication status. The electronic map dynamically displays real-time positions, trajectories, signal strength, battery levels, and video preview windows of all online terminals. Commanders can create dynamic talk groups with one click through circle selection, point selection, or line selection, send text instructions, or initiate video conferences. When a terminal deviates from a preset safety zone or triggers an SOS alarm, the map automatically pops up and highlights it, while associating nearby available rescue forces to achieve location-based optimal resource recommendation.

Space-Air-Ground Multi-Layer Networking

The solution constructs multiple communication layers including high and low orbit satellite broadband, medium and low orbit satellite narrowband, drone aerial relay, and ground portable base stations. In the early stage of a disaster, satellite links ensure basic call-out and SMS reachability. As advance teams arrive, all-domain emergency intelligent terminals activate ad hoc networks, using LTE private networks to cover a radius of 5-10 kilometers. After drones carrying aerial base stations are launched, coverage can be expanded to 30-50 kilometers, with wide-area video backhaul. Rear command centers access the converged dispatch cloud via fiber or satellite dedicated lines to uniformly manage various on-site zones. All link switches are transparent to users, and voice calls and video backhaul will not be interrupted due to changes in the underlying network.

Typical Application Scenarios

Earthquake and Geological Disaster Rescue

In scenarios of road damage and communication interruption caused by earthquakes, backpack satellite call-out terminals enter with the first echelon, establishing contact with the rear within the golden rescue period. On-site search and rescue personnel connect various detection sensors and audio/video equipment through all-domain emergency intelligent terminals. The rear command center uses the GIS dispatch console to grasp rescue progress in each area, aftershock warning information, and personnel safety status on one screen, remotely guiding demolition and medical first aid. The converged dispatch platform can temporarily connect intercom systems of different rescue teams, improving cross-department collaboration efficiency by more than 50%.

Flood Prevention and Urban Waterlogging Response

In flood disasters, public network base stations are easily submerged or lose power. Embankment inspection personnel carry waterproof emergency intelligent terminals, automatically reporting location and water level information during inspections. When a piping or overtopping danger is discovered, a one-key call-out process is triggered, immediately connecting to the flood control headquarters, while the terminal automatically records and uploads on-site video. The command center uses the flood inundation model on the GIS dispatch console, overlaying real-time rainfall and hydrological data, to issue evacuation instructions to all terminals in specific areas and push optimal transfer routes.

Forest Fire Suppression Command

Forest areas usually have no public network coverage, and fire situations change rapidly. Drones carrying all-domain emergency intelligent terminals and infrared pods fly over the fire scene, transmitting fire line positions, spread directions, and fire point temperatures in real time to the command platform. Satellite terminals of firefighting team members continuously report positions and vital signs. The GIS dispatch console uses 3D terrain analysis to assist in formulating firebreak construction plans and retreat routes. When a team member deviates from the group or remains stationary for too long, the platform automatically triggers a call-out to confirm safety status, minimizing casualties.

Solution Value

This solution redefines the emergency communication and command paradigm under extreme conditions, bringing the following core values to emergency management departments, fire rescue teams, and industry rescue forces:

• Extreme Reliability, Never Losing Contact: Satellite communication plus multi-route backup ensures that frontline and rear can maintain basic communication capabilities in any extreme scenario, meeting the rigid requirements of "callable, locatable, and reportable."
• Converged Interoperability, Breaking Barriers: Completely ends the situation where communication equipment from different departments and frequency bands cannot interconnect, allowing voice, video, and data to flow freely on a unified platform, building a true cross-department collaborative command chain.
• Proactive Call-Out, Intelligent Prevention: Shifts from passive waiting for incoming calls to proactive call-out, automatic inspection, and intelligent warning, significantly reducing the risk of personnel loss due to communication failure, and elevating safety protection from post-event emergency response to pre-event prevention.
• Visual Command, Precise Decision-Making: Visual dispatch based on real-time GIS and multimedia information gives commanders unprecedented situational awareness, shortening decision time, optimizing resource allocation, and significantly improving rescue efficiency and success rate.
• Peacetime-Wartime Integration, Continuous Evolution: The solution is not only suitable for wartime emergencies but also for daily inspections, large-scale event security, and drill training, supporting on-demand expansion and software upgrades to protect user investment.