RESOURCE ALLOCATION METHOD FOR TRANSMITTING DATA IN DATA COMMUNICATION NETWORK AND WIDE-BAND ISDN COMMUNICATION NETWORK AND TERMINAL ADAPTER FOR CONNECTING TO DATA COMMUNICATION NETWORK

摘要

PURPOSE: To eliminate the delay of the arrival time of a message between a transmission terminal and a reception terminal by allocating the whole or a part of band width in an entrance means and an exit means to a data communication network for transmitting a data message before the message is transmitted. CONSTITUTION: When a terminal 10 connected to a terminal adapter 20 is to send the message to a terminal 11 connected to a terminal adapter 21, the terminal 10 sends the message 60 constituted of message data 63 containing request band width to the identifier of a transmission terminal (ST) 61, a reception terminal (DT) 62 and the terminal adapter 20. The terminal adapter 20 decides band width required for the transmission of the data message to the terminal 11. The terminal adapter 21 checks input band width allocated to it in accordance with the message, allocates the band and sends an approval message 80 to the terminal adapter 20. It often occurs that allocated band width is smaller than requested band width when the load of transmission terminal TA is heavy.