| In the era of intelligence,wearable devices are gradually emerging.These devices can help people collect useful data from all aspects around them.Team collaborative tasks use mobile edge computing technology to offload high-load computing tasks to edge servers,which increases the overall endurance and core computing power.Due to the mobility of nodes,they use wireless networks to communicate as a whole.The wearable computer required in this scenario must have the network communication capability of integrating wide and narrow bands and combining long and short distances.Therefore,consider using a variety of heterogeneous networks for the design of the communication system framework.In this paper,the network requirements of equipment and applications in the team collaboration task scenario are analyzed,and the specific requirements of the system for the network environment is summarized according to the characteristics of wearable computing platforms and devices as well as the characteristics of the team collaboration scenario,and designs a set of The framework of multi-mode converged communication system based on software-defined network technology,and detailed functional design,workflow design and interaction specification design for each module.Then,the influence of various network factors that affect the team’s collaborative tasks on each application in the system is analyzed,and a self-adaptive network optimization algorithm is designed by using the multi-attribute decision-making theory.The algorithm can realize dynamic network optimization for each application under the condition of real-time access of multiple applications,and select the most ideal network path for communication.The simulation experiment of the algorithm is carried out,and the results show that the overall optimization effect of the algorithm on the network is improved by 20%~40%.Finally,the simulation experiment and the experiment in the physical environment are carried out on the communication system.Firstly,a simulation experiment platform is built.The correctness of the algorithm is verified by using random network properties,and the self-adaptive network handover function test is carried out under the Mininet-wifi network simulation software.Finally,an experimental platform of the actual network environment is built and the usability test of the communication system function is carried out in this environment. |