Data communication method, communication system and mobile terminal

Abstract

In a communications system which complies with LTE including a base station which transmits data by using an OFDM (Orthogonal Frequency Division Multiplexing) method as a downlink access method, and a mobile terminal, in a case in which an uplink scheduling request signal is transmitted by using an S-RACH when an Ack/Nack signal is being transmitted by using an Ack/Nack exclusive channel, the transmission of the Ack/Nack signal is stopped while the uplink scheduling request signal is transmitted.

1 . (canceled) 
     
     
         2 . A mobile communication system comprising:
 a mobile terminal; and   a base station to perform wireless communication with the mobile terminal, wherein   a frequency region allocated to a sounding reference signal is notified from the base station to the mobile terminal.   
     
     
         3 . The mobile communication system according to  claim 1 , wherein frequency hopping is used for allocating the frequency region to the sounding reference signal. 
     
     
         4 . A base station to perform wireless communication with a mobile terminal, wherein
 the base station notifies the mobile terminal of a frequency region allocated to a sounding reference signal.   
     
     
         5 . A mobile terminal to perform wireless communication with a base station, wherein
 the mobile terminal receives a frequency region allocated to a sounding reference signal from the base station.