Patent ID: 11937335
Assignee: NTT DOCOMO, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 3:
4. A signal transmission method executed by a terminal of a radio communication system including a base station and the terminal, the method comprising:
receiving, from the base station, the information to configure a value for a predetermined timer, and
performing an uplink data transmission,
wherein, if the value for the predetermined timer is configured by the base station, and if information to notify that there is no uplink data to be transmitted is transmitted to the base station, starting the predetermined timer, and transmitting, to the base station, the information to notify that there is no uplink data to be transmitted after the predetermined timer expires, and
wherein the information to configure the value for the predetermined timer is included in an information element indicating a MAC layer configuration, the information element being a MAC-MainConfigNB information element.