Patent ID: 8391170

Claim:
A communication characteristic measuring device adapted to a wireless terminal performing communication using a plurality of radio media via a base station in a radio communication system, comprising: a plurality of radio modules, each of which obtains reception acknowledgement information regarding a data packet transmitted to or received from a counterpart wireless terminal in a prescribed communication range independently with respect to each radio media; and a radio environment cognition unit that generates delay time variation data representing characteristics of delay time variations based on the reception acknowledgement information independently with respect to each radio media and each direction of communication, wherein the radio module counts “B” representing the number of times it receives ACK in a unit time “A”, wherein the radio environment cognition unit calculates “C” representing an average reception time interval by way of an equation of C=A÷B, and wherein the radio environment cognition unit calculates “E” representing an uplink average packet arrival time error by way of an equation of E=D−C where D denotes a packet transmission time interval, thus measuring distribution characteristics of the uplink average packet arrival time error as the delay time variation data in uplink communication.