Design And Implementation Of Fusion Communication Scheduling Platform Based On MQTT And WebRTC

When people can not go directly to the from line of the disasrer 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 mobilc 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 applieation requirements of the fusion communication business and the porable wide and narrow fusion emergency communication system in the laboratory under the curent emergency rescue scenario,and determines the basic functional modules of the fusion com munication 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.webrte 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 webrte 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.