Terminal device, base station device, integrated circuit, and communication method
Provided is a terminal device that receives RRC layer information indicating an asynchronous HARQ for a secondary cell, and a first random access response, which is a random access response including fields for indicating an uplink grant and a Temporary C-RNTI and is related to a non-contention based random access procedure on the secondary cell, that manages multiple HARQ processes, and that delivers the uplink grant to an HARQ process that instructs the transmission unit to transmit the MAC layer data in accordance with the uplink grant. In a case that the RRC layer information indicating the asynchronous HARQ is configured, a HARQ process in which the uplink grant included in the first random access response is delivered is determined based on the value of a field for indicating the Temporary C-RNTI included in the first random access response.
1. A terminal device comprising:
reception circuitry configured to and/or programmed to perform a reception of an uplink grant included in a control channel or a random access response; and
transmission circuitry configured to and/or programmed to perform a transmission based on the uplink grant;
wherein, the control channel includes hybrid automatic repeat request (HARQ) information, and the random access response without a HARQ process identifier (ID),
in asynchronous HARQ, a HARQ process which corresponds to the transmission is associated with a HARQ process ID which is included in the HARQ information except in a case where the uplink grant is included in the random access response, and
for the transmission associated with the uplink grant included in the random access response, a HARQ process ID is used.
2. A base station device comprising:
transmission circuitry configured to and/or programmed to perform a transmission of an uplink grant included in a control channel or a random access response; and
reception circuitry configured to and/or programmed to perform a reception based on the uplink grant,
wherein, the control channel includes hybrid automatic repeat request (HARQ) information, and random access response without a HARQ process identifier (ID),
in asynchronous HARQ, a HARQ process which corresponds to the transmission is associated with a HARQ process ID which is included in the HARQ information except in a case where the uplink grant is included in the random access response, and
for the transmission associated with the uplink grant included in the random access response, a HARQ process ID is used.
3. A communication method for terminal device, the communication method comprising:
performing a reception of an uplink grant included in a control channel or a random access response; and
performing a transmission based on the uplink grant;
wherein, the control channel includes hybrid automatic repeat request (HARQ) information, and the random access reposne without a HARQ process identifier (ID),
in asynchronous HARQ, a HARQ process which corresponds to the transmission is associated with a HARQ process ID which is included in the HARQ information except in a case where the uplink grant is included in the random access response, and
for the transmission associated with the uplink grant included in the random access response, a HARQ process ID is used.
4. A communication method for base station device, the communication method comprising:
performing a transmission of an uplink grant included in a control channel or a random access response; and
performing a reception based on the uplink grant,
wherein, the control channel includes hybrid automatic repeat request (HARQ) information, and the random access response without a HARQ process identifier (ID),
in asynchronous HARQ, a HARQ process which corresponds to the transmission is associated with a HARQ process ID which is included in the HARQ information except in a case where the uplink grant is included in the random access response, and
for the transmission associated with the uplink grant included in the random access response, a HARQ process ID is used.
5. The terminal device according to claim 1 , wherein the random access response is associated with non-contention based random access procedure.
6. The base station device according to claim 2 , wherein the random access response is associated with non-contention based random access procedure.