[0061] For the above-mentioned preferred embodiment of the realization method 1, the following two embodiments can be generalized:
[0062] ① Regarding the timing relationship of the PUSCH, if either the main tuning cell or the adjusted cell has a 0 or 6 configuration for uplink and downlink, and the uplink and downlink configurations of the anchor cell and the adjusted cell are different, the cross-carrier scheduling of the retransmitted PUSCH of the adjusted cell , Its corresponding PHICH is ignored, and if it needs to be retransmitted again, it is triggered by UL Grant.
[0063] ② Regarding the timing relationship of PUSCH, if the PUSCH loopback time of the uplink and downlink configurations of the main modulation cell and the adjusted cell are different, for the cross-carrier scheduling of the retransmission PUSCH of the adjusted cell, the corresponding PHICH is ignored, and it is used for retransmission. UL Grant triggered.
[0064] (2) Implementation method two
[0065] For the PUSCH transmitted by the modulated cell for the first time, the terminal detects the PHICH channel, enhanced PHICH channel, or UL Grant to get the first PUSCH retransmission indication. For subsequent retransmissions of the PUSCH, if the retransmission PUSCH is triggered by the PHICH or enhanced PHICH Yes, the terminal detects the UL Grant to obtain the retransmission indication of the retransmitted PUSCH. If the retransmission of the PUSCH is triggered by the UL Grant, the terminal detects the PHICH channel, the enhanced PHICH channel or the UL Grant to obtain the retransmission indication of the retransmitted PUSCH.
[0066] A preferred implementation of method two is: for the timing relationship of PUSCH, if only one of the main tuning cell or the adjusted cell is configured with 0 or 6 for uplink and downlink, and the other of the main tuning cell or the adjusted cell is uplink When one of the downlink configurations 1 to 5 is configured, if the PUSCH of the inter-carrier scheduling modulated cell is triggered by PHICH, the PHICH of the PUSCH is ignored. If retransmission is required again, it is triggered by UL Grant; in other words: only UL The PUSCH triggered by Grant can indicate its HARQ-ACK through the PHICH channel, and then the UE determines whether it needs to be retransmitted according to the PHICH indication.
[0067] For example, when the UE's primary tuning Cell is configuration 0 or 6, and the tuning cell is one of the uplink and downlink configurations 1 to 5, for the PUSCH transmitted for the first time, the UE detects the PHICH channel or UL Grant for the first time. Transmit the PUSCH indication. Assuming that the PHICH channel sent by the base station is NACK, the PUSCH is retransmitted for the first time; for the first retransmission of PUSCH, the base station does not send the PHICH channel to indicate the HARQ for the first retransmission due to the PHICH trigger -ACK, if a second retransmission is required, the base station sends a UL Grant to indicate retransmission, if the second retransmission is not required, the base station neither sends PHICH nor UL Grant; suppose the UL Grant indicates that a second time is needed Retransmission, the UE retransmits the PUSCH for the second time. Since the second retransmission is triggered by the UL Grant, the base station can use the PHICH channel to indicate the HARQ-ACK for the second retransmission. For the subsequent PUSCH retransmission, if the retransmission is triggered by the UL Grant, the base station can use the PHICH channel to indicate the HARQ-ACK of the retransmission. If the retransmission is triggered by the PHICH, the base station must use the UL Grant to notify the UE whether further Retransmission. When the UE's regulated Cell is configuration 0 or 6, and the primary tuning cell is one of uplink and downlink configurations 1 to 5, the same strategy as when the primary tuning cell is configuration 0 or 6 in this paragraph is adopted.
[0068] From the perspective of the UE, for the PUSCH triggered by PHICH retransmission, the UE does not detect the PHICH channel, but only detects the UL Grant. When the UE detects the UL Grant, and the new data in the UL Grant indicates that the NDI indicates the old data packet, then It indicates that the base station did not receive it correctly, and the UE retransmits the PUSCH. When the NDI indicates a new data packet, the UE does not retransmit the PUSCH and transmits a new PUSCH. When the UE does not detect the UL Grant, the UE retains the data in the buffer until it receives the UL Grant and needs to retransmit or newly transmit data, and then do the corresponding processing.
[0069] For the above-mentioned preferred embodiment of the second method, the following two embodiments can be generalized:
[0070] ① Regarding the timing relationship of the PUSCH, if either the main tuning cell or the adjusted cell has a 0 or 6 configuration for uplink and downlink, and the uplink and downlink configurations of the main tuning cell and the adjusted cell are different, the cross-carrier scheduling of the PUSCH of the adjusted cell will pass PHICH If triggered, the PHICH of the PUSCH is ignored, and if it needs to be retransmitted again, it is triggered by UL Grant.
[0071] ② Regarding the timing relationship of the PUSCH, if the PUSCH loopback time of the uplink and downlink configurations of the main modulation cell and the adjusted cell are different, if the cross-carrier scheduling PUSCH of the adjusted cell is triggered by the PHICH, the PHICH of the PUSCH is ignored. Retransmission is triggered by UL Grant.
[0072] Step 402: The terminal sends data on the PUSCH according to the UL Grant or the HARQ-ACK feedback information received on the PHICH or enhanced PHICH.
