Radio communication system, base station control equipment, radio terminal, and radio communication method

Abstract

A radio communication system which automatically selects a communication path having a higher speed is provided when a plurality of communication paths having a different speed from each other are available for data transmission between the radio terminal and the base station control equipment. The radio terminal receives a data frame and sends back an ACK signal for the data frame via the communication path through which the data frame has been received. At this time, the radio terminal acquires data of the frame with a sequence number having received at the first time, and if the frame with the same sequence number is received later, the frame is discarded. However, the ACK signal is sent back in respective cases. The base station control equipment transmits a first data frame to the radio terminal via the plurality of communication paths and transmits subsequent data frames to the radio terminal via one communication path through which the ACK signal for the first data frame has arrived the earliest.

1 . A radio terminal transmitting and receiving data to and from a base station control equipment via at least one communication path selected from among a plurality of communication paths having a different communication speed from each other, the radio terminal comprising a frame transmitting and receiving unit which, when receiving data frames transmitted from the base station control equipment via the plurality of communication paths, acquires data of frame with a sequence number having received at the first time and transmits an ACK signal for the acquired data frame, and discards the data frame with the same sequence number thereafter received and transmits the ACK signal for the discarded data frame to the base station control equipment.