Multiplex communications – Data flow congestion prevention or control – Flow control of data transmission through a network
Reexamination Certificate
2011-05-24
2011-05-24
Hoang, Thai D (Department: 2463)
Multiplex communications
Data flow congestion prevention or control
Flow control of data transmission through a network
C370S231000
Reexamination Certificate
active
07948892
ABSTRACT:
The present invention enables accurate simulation of the state of communication over a communication network in which a communication channel of different communication characteristic is set for each protocol and session, such as a VoIP network built in a multi-vendor environment, and evaluation of communication quality of communications between IP phones, etc. over a supposed communication network. A relay device for relaying packet communications between a plurality of communication devices is used, and the relay device sets a virtual processing unit as an initial process so that it corresponds to the packet transmission direction and/or attribute, based on the contents of a received packet specified by a control protocol, and relays communications of packets after the initial process, based on the packet loss rate and delay time distribution indicated by communication state information associated with the processing unit.
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Fukuyama Noriyuki
Miyazaki Hideaki
Morinaga Masanobu
Fujitsu Limited
Hoang Thai D
Staas & Halsey , LLP
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