Kokusai Denshin Denwa Kabushiki Kaisha

Tooru Asami

Yoshihiro Ito

Masami Ishikura

Hidetoshi Yokota

A traffic generator for sending a pseudo-traffic onto a packet-switched network to evaluate the network performance and a traffic generating function determining method of optimizing generating functions (mathematical models) for a pseudo-traffic are provided. A traffic analysis unit analyzes an actual traffic inputted thereto. An evaluate/optimization unit optimizes parameters of first mathematical models on the basis of a packet length extracted by a packet length extracted unit and the calculation results of the first mathematical models stored in a mathematical model storing unit The optimized first mathematical model is then registered in a packet length determining unit of a packet sending pattern determining module The packet length determining unit calculates the packet length on the basis of the first mathematical model thus registered and then outputs the calculation result to a packet generating module.

Traffic generator and method of determining a traffic generating function

An amount of data to be distributed to each receiving terminal is dynamically controlled for each receiving terminal in response to a congestion of each of plural receiving terminals. When a determination of an RR (Reception Report) returned from the receiving terminal results in a very low rate of packet loss, an adaptive control mixer distributes communication data transmitted from a transmitting terminal to the receiving terminal without reducing the communication data. On the other hand, the determination of the RRs returned from the receiving terminals results in a high rate of packet loss, for example, 50% and 90%, respectively. In this case, the adaptive control mixer reduces, for example, 50% of the communication data transmitted from the transmitting terminal and then distributes the data to the one receiving terminal. The adaptive control mixer reduces, for example, 90% of the communication data and then distributes the data to the other receiving terminal.

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Saitama, Japan

Tooru Asami