Abstract: Provided are transmitting side and receiving side terminals and a method of monitoring a network using the terminals. The transmitting side terminal includes a packet classifier configured to classify an input service packet as a probing packet or a non-probing packet according to a feature of the service packet, and a packet transmitter configured to transmit the probing packet or the non-probing packet.

Abstract: Provided are a terminal and a system and method for monitoring a wireless network. The system for monitoring a wireless network includes: a first terminal including: a packet gap model (PGM) transmission unit for transmitting a plurality of measurement packets at a previously calculated transmission time interval; and a channel quality indicator (CQI) unit for acquiring information regarding channel quality of a wireless communication channel to measure an assured maximum increment of speed of the network; a second terminal including a PGM reception unit for receiving the measurement packets and measuring a non-assured maximum possible speed of the network from a reception time interval of the received measurement packets; and a wireless access point connected with the first terminal through the wireless communication channel.