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

Claim 2:
3. A radio communication system comprising:
a base station; and
a terminal,
wherein the base station includes
a transmitter that transmits information to configure a value for a predetermined timer, and

wherein the terminal includes
a receiver that receives, from the base station, the information to configure the value for the predetermined timer, and
a transmitter that performs 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, the transmitter of the terminal starts the predetermined timer, and the transmitter of the terminal transmits, 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.