Terminal device, base station device, communication method, and integrated circuit
AssigneeSharp Kabushiki Kaisha
InventorsTatsushi AIBA, Shoichi SUZUKI, Kazunari YOKOMAKURA, Hiroki TAKAHASHI
Life of this patent
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Abstract
Uplink data is transmitted efficiently. A terminal device configured to: in a case that a difference between an uplink transmission timing for a Timing Advance Group including a primary cell of a master cell group and an uplink transmission timing for a Secondary Timing Advance Group of a secondary cell group exceeds a maximum transmission timing difference, consider that a timer for the Secondary Timing Advance Group of the secondary cell group has expired and stop transmission on a physical uplink shared channel in the Secondary Timing Advance Group of the secondary cell group.
Claims8
A terminal device that communicates with a base station device in a dual connectivity, the terminal device comprising:
- transmission circuitry configured to perform a physical uplink shared channel (PUSCH) transmission;
- and
- control circuitry, wherein
- the control circuitry is configured to stop the PUSCH transmission for a timing advance group of a secondary cell group in a case that a difference between an uplink transmission timing for a timing advance group of a master cell group and an uplink transmission timing for the timing advance group of the secondary cell group exceeds a maximum transmission timing difference,
- the master cell group includes a primary cell, and
- the secondary cell group includes a primary secondary cell.
A base station device that communicates with a terminal device in a dual connectivity, the base station device comprising:
- reception circuitry configured to receive a physical uplink shred channel transmission (PUSCH);
- and
- control circuitry, wherein
- the control circuitry is configured to consider that the PUSCH transmission for a timing advance group of a secondary cell group as stopped in a case that a difference between an uplink transmission timing for a timing advance group of a master cell group and an uplink transmission timing for the timing advance group of the secondary cell group exceeds a maximum transmission timing difference,
- the master cell group includes a primary cell, and
- the secondary cell group includes a primary secondary cell.
A communication method of a terminal device that communicates with a base station device in a dual connectivity, the communication method comprising:
- performing a physical uplink shared channel (PUSCH) transmission;
- and
- stopping the PUSCH transmission for a timing advance group of a secondary cell group in a case that a difference between an uplink transmission timing for a timing advance group of a master cell group and an uplink transmission timing for the timing advance group of the secondary cell group exceeds a maximum transmission timing difference, wherein
- the master cell group includes a primary cell, and
- the secondary cell group includes a primary secondary cell.
A communication method of a base station device that communicates with a terminal device in a dual connectivity, the communication method comprising:
- receiving a physical uplink shred channel (PUSCH) transmission;
- and
- considering that the PUSCH transmission for a timing advance group of a secondary cell group as stopped in a case that a difference between an uplink transmission timing for a timing advance group of a master cell group and an uplink transmission timing for the timing advance group of the secondary cell group exceeds a maximum transmission timing difference, wherein
- the master cell group includes a primary cell, and
- the secondary cell group includes a primary secondary cell.
Dependencies are inferred from the claim text.