Apparatus and method for ensuring fairness of UDP data transmission in ethernet environment

摘要

Provided are an apparatus and method for ensuring fairness of user datagram protocol (UDP) data transmission in an Ethernet environment. Transmission control protocol (TCP) transmission rate calculator calculates a current TCP transmission rate based on amount of a TCP data stream transmitted in real time from a transmission apparatus and received by a reception apparatus. TCP transmission rate calculator calculates the optimum transmission rate on the basis of the received amount of a TCP data stream transmitted to the reception apparatus before UDP data transmission of the transmission apparatus is started. When UDP data is transmitted from a transmission apparatus to a reception apparatus, a TCP data stream for determining fairness is transmitted together, so that the apparatus and method can be simplified by adding only the TCP stream without an additional module for estimating a queuing delay time on the basis of a round-trip time (RTT) and so on.

主权项

1. An apparatus for ensuring fairness of user datagram protocol (UDP) data transmission between a transmission apparatus and a reception apparatus constituting an Ethernet environment, the apparatus comprising:
a processor configured to control the apparatus to implement: a transmission control protocol (TCP) transmission rate calculator configured to calculate a current TCP transmission rate on the basis of an amount of a TCP data stream transmitted in real time from the transmission apparatus and received by the reception apparatus; a UDP transmission rate calculator configured to calculate a UDP transmission rate on the basis of an amount of UDP data transmitted with the TCP data stream from the transmission apparatus and received by the reception apparatus; and a fairness determiner configured to determine that the UDP data transmission is affecting data transmission fairness if a difference between the current TCP transmission rate and a predetermined optimum TCP transmission rate is a predetermined threshold value or more and if the UDP transmission rate is increasing and configured to transmit a control signal indicating that the UDP data transmission is affecting the data transmission fairness to a UDP transmission rate control means for adjusting the UDP transmission rate included in the transmission apparatus in response to determining that the UDP data transmission is affecting the data transmission fairness, wherein the TCP transmission rate calculator calculates the optimum TCP transmission rate on the basis of a received amount of a TCP data stream transmitted to the reception apparatus before UDP data transmission of the transmission apparatus is started.