当人们不能直接去灾害救援现场的第一线时，远程指挥调度成为突发事件应急指挥的重要手段，其可快速、全面、动态掌握现场信息，有效降低事故带来的损失。但当前应急调度指挥系统一般是建立在政府应急指挥中心，平台软件固定在应急部门，不能够满足突发事件应急指挥机动部署要求。基于此，建立一种可快速部署的应急通信调度平台，确保现场应急救援信息及时上传到后方指挥中心显得尤为重要。

本文是基于实验室便携式宽窄融合应急通信系统项目，设计并实现多类型终端在融合通信平台进行即时消息、音视频等的统一调度。首先，本文对当前应急救援场景下融合通信业务以及实验室便携式宽窄融合应急通信系统应用需求进行分析，确定融合通信平台基本功能模块，主要包括平台鉴权模块、融合通讯录、即时消息和音视频通话。其次，深入研究MQTT技术、WebRTC技术以及Web开发相关技术，设计并开发出融合通信调度平台客户端，实现实验室终端与调度平台融合通信业务。其中，融合通讯录模块是将宽带终端用户与窄带终端用户进行混合编组，并配置号码的映射关系，实现融合通信调度平台对不同通信系统用户的查看与通信业务操作。即时消息模块则通过MQTT协议发布订阅者模式实现终端与调度台一对一消息和群组消息的发送与接收，消息类型包括文本、文件和图片消息。音视频通话模块则利用WebRTC协议音视频引擎，调用呼叫控制程序接收流媒体转发数据，实现调度台与终端全双工单呼，群组呼叫和视频通话功能。再者，平台采用Vue组件化思想，完成融合通信调度平台客户端页面搭建。

最后，本文对平台各功能模块进行测试，根据测试用例、平台效果图以及业务抓包表明基本实现融合通信调度平台开发。系统支持即时消息发送与接收，支持全双工单呼，群组呼叫以及视频通话。但本文还存在以下问题：视频通话过程中，支持用户仅能支持6路视频流，用户较少；无法实现动态组的语音调度。

When people can not go directly to the front line of the disaster rescue site, remote command and dispatching has become an important means of emergency command. It can quickly, comprehensively and dynamically grasp the on-site information and effectively reduce the losses caused by the accident. However, the current emergency dispatching command system is generally established in the government emergency command center, and the platform software is fixed in the emergency department, which can not meet the requirements of emergency command mobile deployment. Based on this, it is particularly important to establish a rapidly deployable emergency communication and dispatching platform to ensure that the on-site emergency rescue information is uploaded to the rear command center in time.

This paper is based on the laboratory portable wide and narrow fusion emergency communication system project, and designs and implements the unified scheduling of instant messaging, audio and video on the fusion communication platform for multiple types of terminals. Firstly, this paper analyzes the application requirements of the fusion communication business and the portable wide and narrow fusion emergency communication system in the laboratory under the current emergency rescue scenario, and determines the basic functional modules of the fusion communication platform, mainly including the platform authentication module, the fusion address book, instant messaging and audio and video calls. Secondly, in-depth study of mqtt technology, webrtc technology and web development related technologies, design and develop the integrated communication scheduling platform client to realize the integrated communication business between the laboratory terminal and the scheduling platform. Among them, the converged address book module is to mix and group broadband end users and narrowband end users, and configure the number mapping relationship, so as to realize the view and communication business operation of the converged communication scheduling platform for users of different communication systems. The instant message module realizes the sending and receiving of one-to-one messages and group messages between the terminal and the dispatcher through the mqtt protocol publishing subscriber mode. The message types include text, file and picture messages. The audio and video call module uses the audio and video engine of webrtc protocol to call the call control program to receive the streaming media forwarding data, and realizes the functions of full duplex single call, group call and video call between the dispatcher and the terminal. Furthermore, the platform adopts the Vue component idea to complete the construction of the client page of the integrated communication scheduling platform.

Finally, this paper tests the function and performance of the platform. According to the test cases, platform renderings and business packet capturing, it shows that the development of integrated communication scheduling platform is basically realized. The system supports instant message sending and receiving, full duplex single call, group call and video call. However, there are still the following problems in this paper: in the process of video call, it can only support 6-channel video streaming users, and there are few users; Voice scheduling of dynamic group cannot be realized.

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