Fujitsu has developed technology that can automatically select the best communication protocol
The Fujitsu Research Institute announced on March 7, 2013 that when it develops applications for file transfers and virtual desktops in various communication environments such as wireless and international lines, it can automatically select the communication protocol that is most suitable for the environment. Communication speed technology. TCP, which is used as a standard for existing applications, will suffer data loss (loss of data packets) in poor-quality communication environments, and resending data will cause delays. Among the high-speed communication protocol technologies that improve TCP communication performance, there are high-speed retransmission methods and error correction methods. However, although the high-speed resend method is effective for increasing the speed of large-capacity file transfers, it cannot completely avoid the resend process. Therefore, operation delay will occur for human-computer interaction such as virtual desktops. The error correction method has the problem that increasing the redundancy and the error correction processing operation will increase the CPU load. As mentioned above, since the characteristics of communication protocols are different, it is impossible for one communication protocol to provide the best communication performance for all communication environments and applications. Moreover, in recent years, the network environment is also becoming more complex, and LAN, wireless lines, Internet, and dedicated lines are mixed together. In this case, it is difficult to grasp the communication environment in real time and determine which protocol is the most ideal, and it is difficult for users to distinguish and use these environments. Schematic diagram of the use of this technology Scope of application of TCP, high-speed retransmission method and error correction method developed by Fujitsu The method developed by the Fujitsu Research Institute is to model the characteristics of each communication protocol according to various usage conditions such as the communication environment and the type of application in advance, and in practice to quickly infer the communication performance of each communication protocol based on the use conditions The protocol with the highest communication performance is automatically selected from the protocols. It is mainly composed of the following two technologies. (1) The technique of establishing a model for the characteristics of the communication protocol according to the utilization conditions In order to infer the communication performance of efficient protocols from complex conditions, it is necessary to build a communication characteristic model that defines the network characteristics (round-trip transmission delay, data loss rate, available bandwidth) and application characteristics (data size, data interval) Relationship with communication performance (transmission time and response time). The communication performance of each protocol defined by the communication characteristic model is measured in the simulation and simulation environment using the characteristics of the virtual network and the characteristics of the virtual application. In addition, since it is difficult to perform performance measurement under all conditions, a method of predicting the characteristics of other conditions based on the measured performance is adopted. (2) Techniques for inferring and selecting the best protocol After the communication characteristic model is established, the communication performance can be inferred, so as to select the protocol that can exert the best communication performance. The network characteristics are measured based on the data packet information sent and received via the network, and the characteristics of the application are measured based on the transmission data of the application. The next step is to compare the collected network characteristics and application characteristics with the communication characteristic model prepared in advance to quickly infer the communication performance of each protocol. Then select the protocol with the best performance from the inferred communication performance of each protocol for communication. By using the technology developed this time, it is expected to improve communication performance in a variety of use cases. For example, for mobile terminals, the best protocol can be selected in the changes in the communication environment that occurs with movement; the data center can automatically select the best protocol according to the type of application used; Then the best agreement can be automatically selected according to the distance between the stations. The Fujitsu Research Institute plans to make the technology practical as a communication middleware in FY2013. Antenna For Automotive Product,Fm Transmitter Antenna,Radio Transmitter Antenna,Transmitting And Receiving Antenna IHUA INDUSTRIES CO.,LTD. , https://www.ihuagroup.com
