Packet communication system capable of rapidly confirming receipt of downward packet signals

摘要

A packet communication system is capable of rapidly carrying out receipt confirmation for transmission of a downward packet signal. When a radio base station (100) wishes to obtain from a terminal (101) response information indicating that the terminal has received a downward packet signal, the radio base station temporarily inhibits a terminal (102) from transmitting an upward packet signal so as to enable the terminal to transmit as an upward packet signal a packet signal containing the response information./!