Data communication method, communication system and mobile terminal

摘要

In a communications system which complies with LTE including a base station 2 which transmits data by using an OFDM (Orthogonal Frequency Division Multiplexing) method as a downlink access method, and a mobile terminal 3, in a case in which an uplink scheduling request signal SR 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 SR is transmitted.

主权项

1. A data communication method which is implemented by a communication system, the method comprising:
transmitting data by a base station using an OFDM (Orthogonal Frequency Division Multiplexing) method as a downlink access method; transmitting, by a mobile terminal, a quality notification signal for notifying downlink communication quality to said base station; transmitting, by said mobile terminal, a scheduling request signal to said base station requesting allocation of radio resources from said base station before transmitting transmission data to said base station; and performing, by said mobile terminal: a quality notification process that includes transmitting said quality notification signal to said base station; a scheduling request signal transmission process that includes transmitting said scheduling request signal to said base station; a first control process that includes, when the mobile terminal has not been allocated a radio resource for transmitting said transmission data, transmitting said scheduling request signal to said base station; and a second control process that includes, when said quality notification process coincides with said scheduling request signal transmission process, stopping said quality notification process during a time interval during which said mobile terminal transmits said scheduling request signal.