| With the function of mobile intelligent devices(MSD)becoming more and more powerful,mobile office is becoming more and more popular.The staff can use MSD to access the business process system at any time and at any place.However,due to server downtime or network interruption,outdoor work can not continue,therefore this is a problem to be solved.In addition,in some special environment(without 4G/5G signal)or in the application scenarios to save traffic costs(not using 4G/5G signals),such as cooperative work in the field,information sharing of vehicle network,post disaster rescue management,and so on,how to use workflow technology to provide business support or information sharing is also a difficult problem to be solved.Based on the above research background and demand,this paper studies the key technologies of business process execution environment in mobile network,and puts forward the theoretical model of the dual process engine in the hybrid network(fixed network and mobile network),and the multiple process engine theory model in the mobile ad hoc network(MANETs),and then provides users with fault transparent business process execution environment.In addition,today's MSD has multiple network interfaces,which provide higher functional requirements for MSD,such as fast recovery and load sharing,so as to provide reliable guarantee for efficient and reliable transmission of process data.However,the current network protocol can not make good use of various network interfaces in MSD,because the two ends of the communication usually have only one reachable IP path in the current network environment,and all the transport layer protocols are based on this premise.Therefore,it is a hot research area of network protocol to realize multipath transmission by using MSD's multi-homed characteristic.In this paper,the influence of multipath transmission technology in mobile network on reliable and efficient transmission of process data is deeply researched and applied.The research work and innovation point of this paper are as follows:1.In view of the normal work requirements of the outdoor workers in the mobile Internet environment,this paper puts forward a theoretical model of the dual process engine in the hybrid network,and studies the cooperative model of the fixed process engine and the mobile process engine in the hybrid network and their cooperative work mechanism.The purpose is to provide users with a failure transparent process execution environment.2.In some special environment(without 4G/5G signal)or in the application scenarios to save traffic costs,in order to ensure the normal operation of the business process,this paper presents the multiple process engine theoretical model in MANETs,studies the multiple process engine synergy model in MANETs and their cooperative working mechanism,so that multiple process engines can work closely together to make users feel as if only one process engine is running.In addition,fast and correct Web service discovery is a prerequisite for the normal operation of business processes.Most of the existing Web service discovery methods are based on semantic information.Because of the high time complexity,they are expensive in MANETs and difficult to apply.Therefore,this paper studies the Web service discovery model based on multiple process engine in mobile network,and proposes the solution of Web service discovery.3.In order to solve the problem of unreliable data transmission caused by the frequent changes of network topology in MANETs,and in order to optimize the transmission performance of data in the MANETs composed of MSD with multiple network interfaces,a theoretical model of QoE driven content transmission in mobile networks is proposed and studied.The model includes:(1)HMM-based optimal-start multipath routing theoretical model;(2)MPTCP subpath management optimization;(3)QoE driven packet scheduling model.Finally,we implement,test and analyze the content delivery model in MANETs.4.Due to it is difficult to test,evaluate and study the business process system in the real mobile network environment,this paper proposes,designs and implements a high fidelity experimental platform(FEP).This work includes:(1)the FEP simulation data flow model of mobile network is put forward,which combines Fedora,NS-3,VirtualBox,Android and Docker;(2)the seamless connection between the real world and the virtual world is realized.FEP can make the experiment more convenient,and quickly apply the theoretical research results to the actual system,so that researchers and engineers can share the same set of code.Therefore,the business process system based on FEP can be directly applied to the actual mobile network. |
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