IDM Airport Broadband Converged Dispatch System Private Network Technical Solution

Table of Contents

1 Project Background... 1

1.1 Project Overview... 1

1.2 Objective Positioning... 1

2 Broadband Converged Communication Command Private Network Technical Solution... 2

2.1 Introduction to Broadband Converged Communication Command Private Network Technology... 2

2.2 Broadband Converged Communication Command Private Network Architecture... 2

2.2.1 Broadband Trunking Functions... 3

2.2.1.1 Broadband Trunking Terminal Functions — Voice Communication... 3

2.2.1.2 Broadband Trunking Terminal Functions — Dispatch Console Audio Functions... 5

2.2.2 Data Service Functions... 6

2.3 Broadband Converged Communication Platform Development Objectives... 7

2.3.1 Objective 1: Achieve All-weather Converged Communication Command & Dispatch System... 7

2.3.2 Objective 2: Achieve "One Map" Converged Communication Command & Dispatch... 7

2.3.3 Objective 3: Rapidly Establish Multi-level Converged Communication Visualized Command Chain... 8

2.3.4 Objective 4: Continuously Enriched Converged Communication Terminal Equipment... 8

2.3.5 Objective 5: Rapid Establishment of Emergency Command & Dispatch System... 8

2.4 Broadband Converged Communication Platform Function Description... 9

2.4.1 Professional Voice Trunking Communication Functions... 9

2.4.1.1 Group Call Communication... 9

2.4.1.2 Private Call Communication (Private Call)... 10

2.4.1.3 Talk Group Scanning... 10

2.4.1.4 Self-established Temporary Talk Group... 10

2.4.1.5 Primary Talk Group Priority Playback and Fast Return... 10

2.4.1.6 Priority Setting (Queue and Barge-in/Forced Release Mechanism)... 10

2.4.1.7 Fast Group Switching... 11

2.4.1.8 Online Member List... 11

2.4.1.9 Text Message and Image Sending... 11

2.4.1.10 Talk Group Recording Query and Playback... 11

2.4.1.11 Personalized Address Book... 12

2.4.1.12 Flexible Mobile Video Reporting and Push... 12

2.4.1.13 Fixed Image Retrieval and Push... 12

2.4.1.14 Video Conference System Support... 13

2.4.1.15 GIS System Graphical Command Mode... 13

2.4.1.16 Audio/Video Storage and Retrieval System... 14

2.4.1.17 Powerful System Management Platform... 14

2.4.2 Front-end Wireless Video Integrated Platform Functions... 14

2.4.2.1 Information Transmission Function... 15

2.4.2.2 Transmission Channel Establishment... 15

2.4.2.3 Individual Soldier Image Transmission Function... 15

2.4.2.4 Converged Communication Dispatch Function... 15

2.4.2.5 Video Surveillance Function... 15

2.4.2.6 Member Dynamic Display... 15

2.4.2.7 Emergency Plan... 15

2.4.3 Back-end Video Integrated Platform... 16

2.4.3.1 Duty and On-watch Function... 16

2.4.3.2 Video Dispatch Function... 16

2.4.3.3 Map Dispatch Function... 17

2.4.3.4 Command Dispatch Function... 17

2.4.3.5 Voice Dispatch Function... 18

2.4.3.6 Multimedia Conference... 19

2.4.3.7 Dispatch Recording... 19

2.4.3.8 Dispatch Video Recording... 19

2.4.3.9 Multi-level Dispatch... 20

2.4.4 IDM Converged Dispatch System WEB Client... 20

2.4.4.1 Software Main Interface... 20

2.4.4.2 Voice Dispatch Interface... 20

2.4.4.3 Radio Dispatch Interface... 21

2.4.4.4 Audio/Video Conference Interface... 21

2.4.4.5 Video Surveillance Interface... 22

2.4.4.6 IoT Monitoring Interface... 22

2.4.5 System Advantages... 23

2.5 Broadband Converged Communication System Equipment... 25

1 Project Background

1.1 Project Overview

To address the information exchange among dispatch commands for aviation fuel, aircraft maintenance, and ground vehicles within the airport area, the airport needs to adopt new technologies and new methods to upgrade or enhance its airport dispatch communication system. Currently, airports are successively launching digital APPs and other new auxiliary means to improve various airport operation systems. The existing 400M narrowband wireless trunking intercom system can no longer meet the business demand. The demand of various operating units for an integrated command & dispatch system is increasing day by day, and new requirements have been placed on wireless communication technology.

The broadband digital trunking private network, carried on an IP network and covering the airport area, provides airport professional users with integrated wireless mobile broadband access services for data, voice, and video by offering rich terminals, flexible networking, and personalized service customization capabilities. It meets various application requirements in apron outdoor areas, control towers, and terminal buildings, including mobile communication, apron dispatch, high-precision vehicle positioning, surface surveillance, geographic information, and information integration.

Building a wireless broadband trunking network with visualized dispatch and command capabilities and professional trunking intercom functions has become a strong demand for airport digital construction and refined management.

1.2 Objective Positioning

The construction of an airport broadband trunking private communication network aims to transform the airport development model, strengthen airport emergency communication support, improve the service quality of all airport parties, and enhance the information security assurance of airport wireless communications.

By building an airport broadband digital trunking private network, various types of information such as airport economy, culture, public resources, management services, and airport environment can be transmitted, integrated, exchanged, and utilized in a timely manner, improving the interconnectivity, comprehensive perception, and information utilization capabilities between things and things, things and people, and people and people, thereby greatly enhancing the airport's coordinated management and service capabilities. Building a broadband digital trunking private network will make development more comprehensive, more coordinated, and more sustainable.

The basic applications of the airport broadband digital trunking private network involve wireless intranet, public safety, emergency command & dispatch, intelligent transportation, and on-site safety operations, which help break down information barriers between departments and promote information sharing and interaction in the overall environment.

The construction of the broadband digital trunking private network can further accelerate the pace of informatization construction, promote digital and internet-based development, and drive the adjustment and upgrading of the airport industrial structure.

2 Broadband Converged Communication Command Private Network Technical Solution

2.1 Introduction to Broadband Converged Communication Command Private Network Technology

The broadband converged communication command private network is a dedicated multimedia digital trunking technology developed based on LTE 4G technology, with a deep understanding of airport industry customers' communication needs for digital trunking. It features professional trunking communication performance, high throughput, high reliability, and real-time data transmission performance. It can be used for various services such as voice dispatch and command, real-time data interaction, and collaborative operations for industry users. Due to the professional trunking design, it has absolute advantages in latency, reliability, and terminal customization, and can truly meet the performance requirements of professional voice trunking.

Group establishment latency is less than 300ms, talk permission application/preemption is less than 150ms, and mobile communication at high speeds of up to 350km/h is supported. One network supports professional trunking while also supporting high-rate, large-bandwidth uplink and downlink data services. A single terminal can simultaneously support trunking, data, and video. In an all-IP network, protocol optimization is required to implement professional trunking services.

2.2 Broadband Converged Communication Command Private Network Architecture

The main network elements of the broadband digital trunking private network consist of terminals, base stations, core network, operation and maintenance servers, multimedia dispatch servers, and unified data servers, forming an IP network based on LTE digital trunking wireless access network. Its network architecture is shown in the figure below.

Core equipment consists of dispatch servers, IoT terminals (such as location, temperature, humidity, and illuminance), intelligent broadband terminals, mobile APPs, IP phones, and computing servers, mainly completing user voice and data communication control and dispatch functions as well as equipment and user management and maintenance functions, and the high-precision positioning function of positioning equipment required by users. To support trunking functions, a trunking gateway function is also added. The multimedia dispatch center interconnects with external networks and heterogeneous systems such as PSTN and Tetra through gateway equipment.

Terminal equipment mainly includes trunking terminals, vehicle-mounted terminals, and data transmission terminals/modules.

In addition, other application-layer equipment can be connected, such as other application servers, video decoders, GIS, and video walls.

2.2.1 Broadband Trunking Functions

2.2.1.1 Broadband Trunking Terminal Functions — Voice Communication

2.2.1.1.1 Point-to-point Call

1. One-to-one private calls can be initiated between cluster users, between cluster users and dispatch console users, and between dispatch console users. 2. The system can be configured with a maximum call duration for private calls. 3. The dispatch console has the authority to forcibly terminate ongoing private calls.

2.2.1.1.2 Group Call

1. The group name and the speaking user's name can be displayed on terminals within the group. 2. Group users can manually dial the group number or, after restarting, be automatically invited to rejoin an already established group. 3. The dispatch console can forcibly disband a group. 4. Group members speak using the PTT (Push-to-Talk) method.

2.2.1.1.3 Emergency Call

1. The system supports emergency private calls and emergency group calls from terminals and the dispatch console. 2. Emergency calls have the highest priority and can preempt other ongoing private call and group call services. 3. Emergency calls can be initiated without pressing the PTT key through the hot microphone function. 4. Visual and audible alarms displaying the emergency caller's user ID are shown on the dispatch console and terminals. 5. The maximum duration setting for emergency calls ensures system security.

2.2.1.1.4 Direct Mode (Off-network) Operation

1. The system supports direct mode operation. When cluster users enter direct mode, they can communicate with other users on the same channel via the PTT key. 2. Terminals support manual switching between direct mode and cluster mode.

2.2.1.1.5 Late Entry

When a group service is initiated, some users may be unable to join the group call in time due to being powered off, out of coverage, or for other reasons. When these users power on again or re-enter the coverage area, they will be re-invited by the conference group, or they can join the ongoing group call by dialing the group number.

2.2.1.1.6 Talk Burst Preemption

In a group call, users with higher priority can preempt the speaking rights of users with lower priority.

2.2.1.1.7 Talk Burst Priority

Emergency call > dispatch console > high-priority terminal > low-priority terminal.

2.2.1.2 Broadband Trunking Terminal Functions - Dispatch Console Audio Functions

2.2.1.2.1 Dynamic Reorganization

The dispatch console can dynamically reorganize talk groups or users. Users in a dynamic group will form a new trunking group.

2.2.1.2.2 Call Forwarding

The system administrator can forward incoming calls to another phone number when a user is unable or unwilling to answer the call.

2.2.1.2.3 Call Recording

The system supports detailed call records for voice group calls, voice private calls, video private calls, video upload, and video distribution services. It records detailed information on users' usage of these services, including calling and called numbers, duration, and other information, for usage analysis and statistics of different services.

2.2.1.2.4 Transfer

Based on an established private call between User A and the dispatch console, the transfer operation on the dispatch console interface enables User A to establish direct communication with User B.

2.2.1.2.5 Multi-channel Selective Answering

The dispatch console can simultaneously receive multiple ordinary private calls, and the dispatcher can select which call to answer as needed.

2.2.1.2.6 Broadcast Call

1. The dispatch console supports broadcast calls to all users on the network or to users in a designated area. 2. During a broadcast call, other dispatch consoles are not permitted to preempt.

2.2.1.2.7 Dynamic Reorganization

The dispatch console can dynamically reorganize talk groups or users. Users in a dynamic group will form a new trunking group.

2.2.2 Data Service Functions

Service Type	Service Description
Ultra-high-speed uplink video service	Supports per-user uplink rates greater than or equal to 4Mbps, providing HD video transmission capability.

Ultra-high-speed downlink video services	Per-user downlink rate exceeds 6Mbps, providing HD video transmission capability.
Medium/high-speed video services	Provides medium/high-speed video services.
Short data services

SMS Service Ø  Supports point-to-point SMS and point-to-group SMS between end users, between dispatch consoles and end users, and between dispatch consoles. The size of a single SMS message is 70 bytes. Ø  The dispatch console supports saving and exporting all received and sent SMS messages. When the SMS storage limit is reached, a storage-full alert shall be provided. Ø  Supports offline SMS functionality. When the handheld terminal comes online, the server automatically sends the offline messages. Ø  The dispatch console and terminals support preset SMS functionality, which is user-editable, with a capacity of at least 100 messages. Ø  Supports predefined status messages and emergency status message functionality. MMS Service Ø  Supports point-to-point MMS and point-to-group MMS between end users, between dispatch consoles and end users, and between dispatch consoles. MMS supports images, audio, and text. Ø  The dispatch console supports saving and exporting all received and sent MMS messages. When the MMS storage limit is reached, a storage-full alert shall be provided. Ø  Supports offline MMS functionality. When the handheld terminal comes online, the server automatically sends the offline messages.

GISService

Supports real-time reporting of GIS location information from LTE private network mobile terminals, with GIS location display on the dispatch console via the dispatch consoleGIS positioning display