Terminal apparatus, base station apparatus, communication method, and integrated circuit
A terminal apparatus receives a random access response including a random access response grant, and transmits a PUSCH based on the random access response grant. A subframe available for PUSCH transmission corresponding to the random access response grant associated with a non-contention based random access procedure at least includes a special subframe including an added UpPTS, and a subframe available for PUSCH transmission corresponding to the random access response grant associated with a contention based random access procedure does not include a special subframe including the added UpPTS.
1. A terminal apparatus comprising:
a receiver configured to receive (a) a random access response including a random access response grant and (b) downlink control information; and
a transmitter configured to transmit a Physical Uplink Shared CHannel (PUSCH) in an Uplink Pilot Time Slot (UpPTS) included in a special subframe based on the downlink control information,
wherein a subframe available for PUSCH transmission corresponding to the random access response grant included in a random access response is an uplink subframe other than the special subframe including the UpPTS,
the UpPTS is constituted by two or more SC-FDMA symbols,
the receiver is further configured to receive information indicating a number of SC-FDMA symbol(s) among the two or more SC-FDMA symbols, the SC-FDMA symbol(s) being SC-FDMA symbol(s) used for transmitting the PUSCH, and
in a case that a Physical Downlink Control CHannel (PDCCH) associated with a Random Access-Radio Network Temporary Identifier (RA-RNTI) is detected in a subframe n, and a corresponding transport block includes the random access response to a transmitted random access preamble;
the transmitter performs the PUSCH transmission corresponding to the random access response grant, in a first available uplink subframe n+k (k≥6) for the PUSCH transmission corresponding to the random access response grant, or in a next available uplink subframe after the first available uplink subframe n+k for the PUSCH transmission corresponding to the random access response grant.
2. The terminal apparatus according to claim 1 ,
wherein the random access response grant includes a delay field,
the PUSCH transmission corresponding to the random access response grant is performed in the first available uplink subframe n+k, in a case that the delay field is set to 0, and
the PUSCH transmission corresponding to the random access response grant is performed in the next available uplink subframe, in a case that the delay field is set to 1.
3. A base station apparatus comprising:
a transmitter configured to transmit (a) a random access response including a random access response grant and (b) downlink control information; and
a receiver configured to receive a Physical Uplink Shared CHannel (PUSCH) in an Uplink Pilot Time Slot (UpPTS) included in a special subframe based on the downlink control information,
wherein a subframe available for PUSCH transmission corresponding to the random access response grant is an uplink subframe other than the special subframe including the UpPTS,
the UpPTS is constituted by two or more SC-FDMA symbols,
the transmitter is further configured to transmit information indicating a number of SC-FDMA symbol(s) among the two or more SC-FDMA symbols, the SC-FDMA symbol(s) being SC-FDMA symbol(s) used for receiving the PUSCH transmission, and
in a case that a Physical Downlink Control CHannel (PDCCH) associated with a Random Access-Radio Network Temporary Identifier (RA-RNTI) is transmitted in a subframe n, and a corresponding transport block includes the random access response to a received random access preamble:
the receiver receives the PUSCH transmission corresponding to the random access response grant, in a first available uplink subframe n+k (k≥6) for the PUSCH transmission corresponding to the random access response grant, or in a next available uplink subframe after the first available uplink subframe n+k for the PUSCH transmission corresponding to the random access response grant.
4. A communication method used for a terminal apparatus, comprising the steps of:
receiving (a) a random access response including a random access response grant and (b) downlink control information; and
transmitting a Physical Uplink Shared CHannel (PUSCH) in an Uplink Pilot Time Slot (UpPTS) included in a special subframe based on the downlink control information,
wherein a subframe available for PUSCH transmission corresponding to the random access response grant is an uplink subframe other than the special subframe including the UpPTS, and
the UpPTS is constituted by two or more SC-FDMA symbols,
the method further comprising the steps of:
receiving information indicating a number of SC-FDMA symbol(s) among the two or more SC-FDMA symbols, the SC-FDMA symbol(s) being SC-FDMA symbol(s) used for transmitting the PUSCH; and
in a case that a Physical Downlink Control CHannel (PDCCH) associated with a Random Access-Radio Network Temporary Identifier (RA-RNTI) is detected in a subframe n, and a corresponding transport block includes the random access response to a transmitted random access preamble, performing the PUSCH transmission corresponding to the random access response grant, in a first available uplink subframe n+k (k≥6) for the PUSCH transmission corresponding to the random access response grant, or in a next available uplink subframe after the first available uplink subframe n+k for the PUSCH transmission corresponding to the random access response grant.
5. A communication method used for a base station apparatus, comprising the steps of:
transmitting (a) a random access response including a random access response grant and (b) downlink control information; and
receiving a Physical Uplink Shared Channel (PUSCH) in an Uplink Pilot Time Slot (UpPTS) included in a special subframe based on the downlink control information,
wherein a subframe available for PUSCH transmission corresponding to the random access response grant is an uplink subframe other than the special subframe including the UpPTS, and the UpPTS is constituted by two or more SC-FDMA symbols,
the method further comprising the steps of:
transmitting information indicating a number of SC-FDMA symbol(s) among the two or more SC-FDMA symbols, the SC-FDMA symbol(s) being SC-FDMA symbol(s) used for receiving the PUSCH transmission; and
in a case that a Physical Downlink Control CHannel (PDCCH) associated with a Random Access-Radio Network Temporary Identifier (RA-RNTI) is transmitted in a subframe n, and a corresponding transport block includes the random access response to a received random access preamble, receiving the PUSCH transmission corresponding to the random access response grant, in a first available uplink subframe n+k (k≥6) for the PUSCH transmission corresponding to the random access response grant, or in a next available uplink subframe after the first available uplink subframe n+k for the PUSCH transmission corresponding to the random access response grant.