Estudo comparativo da utilização de protocolos da camada de transporte e aplicação em ambientes de mobile cloud computing

Abstract

With the growth of Information Technology and the emergence of the Internet, mobile devices (e.g., tablets and smartphones) become essential tools for human lives, because this type of devices can connect into network anywhere through a Mobile Network Service or a Wi-Fi network. However, mobile applications require more and more resources from those devices, which forces them to adopt strategies to supply that demand. Some strategies we have been created, like the MCC, which uses some approaches like offloading to migrate resources like data and process to the Cloud. But, in order to execute, offloading offloading needs to establish a communication between the mobile device and remote environment, which in cases like natural disasters or attacks can interrupt that communication, making it necessary to use other ways to communicate, like the D2D approach. Keeping in mind the necessity to use the D2D approach, to ensure the interaction between users when happens a natural disaster and presented the offloading to migrate the tasks, this paper has as propose to analyze the communication protocol performance into Transport Layer and Application Layer in MCC environment, to understand the impact made by the usage of those protocols, and determinate which protocols improve the user experience based on performance. As a final result, it was possible to conclude that in general the TCP had a better performance compared to the others, having its average influence rate in the total offloading process of 39% while other protocols such as RUDP had its average rate of 97%. Performing an analysis by layers, it was noticed that in the Application layer, the HTTP performed better with less influence and consequently less download and upload time compared to the MQTT, and in the Transport layer, confirming what was mentioned previously, the TCP protocol proved to be a better option over RUDP.