Method and apparatus for scheduling multiple transmission in a wireless communication system

1. A method performed by a user equipment (UE) in a wireless communication system, the method comprising:

receiving, from a base station (BS), a radio resource control (RRC) message including configuration information related to multiple transport blocks;

identifying whether feedback bundling is enabled or disabled for the multiple transport blocks based on the RRC message;

receiving, from the BS, downlink control information (DCI) including scheduling information for receiving the multiple transport blocks;

receiving, from the BS, the multiple transport blocks based on the scheduling information included in the DCI; and

transmitting, to the BS, a feedback message including feedback information the received multiple transport blocks,

wherein the feedback information includes a response to a number of transport blocks indicated by the DCI among the multiple transport blocks in case that the feedback bundling is enabled, and

wherein the feedback information includes a response to one transport block among the multiple transport blocks in case that the feedback bundling is disabled.

2. The method of claim 1 ,

wherein the transmitting the feedback message including the feedback information comprises:

identifying a frequency domain position and a time domain position of the feedback message; and

transmitting, to the BS, the feedback message based on the frequency domain position and the time domain position,

wherein the frequency domain position is identified based on the DCI,

wherein the time domain position is identified based on at least one of a time-domain interval between a start subframe of the feedback message and a last subframe of a last transport block, or a time-domain interval between the start subframe of the feedback message and a last subframe of an n-th transport block scheduled in the DCI, and

wherein n is a predefined value.

3. The method of claim 1 , wherein in case that the DCI is mapped onto a UE-specific search space, the scheduling information included in the DCI corresponds to information about specific transport block included in the multiple transport blocks, or information about all transport blocks included in the multiple transport blocks,

wherein the DCI includes a new data indicator (NDI) field where each bit in the NDI field indicates an initial transmission or retransmission state for each transport block in the multiple transport blocks, and

wherein a size of the NDI field corresponds to a number of the multiple transport blocks scheduled by the DCI.

4. The method of claim 1 , wherein the method further comprises:

receiving, from the BS, a RRC message indicating a time gap between a first transport block and a second transport block included in the multiple transport blocks.

5. The method of claim 1 , wherein the method further comprises:

transmitting, to the BS, multiple transport blocks via physical uplink shared channel (PUSCH);

receiving a DCI including early termination information for the PUSCH; and

in case that an early termination of the PUSCH transmission is configured for the UE, identifying the DCI including early termination information as an acknowledgement (ACK) feedback for the PUSCH.

6. The method of claim 1 ,

wherein the multiple transport blocks are interleaved, and

wherein any transport block of the interleaved multiple transport blocks is transmitted in a predetermined number of consecutive subframes, followed by other transport blocks.

7. The method of claim 1 ,

wherein the method further comprises:

detecting narrowband physical downlink control channel (NPDCCH) with a DCI ending in subframe n, wherein the DCI schedules the multiple transport blocks and 2-HARQ processes supporting up to 2 HARQ processes simultaneously; and

receiving a narrowband physical downlink shared channel (NPDSCH) transmission starting from subframe n+k, and

wherein an NPDCCH candidate in any subframe starting from subframe n+1 to subframe n+k−1 are not monitored by the UE.

8. A method performed by a base station (BS) in a wireless communication system, the method comprising:

transmitting, to a user equipment (UE), a radio resource control (RRC) message including configuration information related to multiple transport blocks, wherein whether feedback bundling is enabled or disabled for the multiple transport blocks is identified based on the RRC message;

transmitting, to the UE, downlink control information (DCI) including scheduling information for transmitting the multiple transport blocks;

transmitting, to the UE, the multiple transport blocks based on the scheduling information included in the DCI; and

receiving, from the UE, a feedback message including feedback information for the transmitted multiple transport blocks,

wherein the feedback information includes a response to a number of transport blocks indicated by the DCI among the multiple transport blocks in case that the feedback bundling is enabled, and

wherein the feedback information includes a response to one transport block among the multiple transport blocks in case that the feedback bundling is disabled.

9. The method of claim 8 , wherein receiving, from the UE, the feedback message including the feedback information comprises:

receiving, from the UE, the feedback message based on a frequency domain position and a time domain position of the feedback message,

wherein the frequency domain position is identified based on the DCI,

wherein the time domain position is identified based on at least one of a time-domain interval between a start subframe of the feedback message and a last subframe of a last transport block, or a time-domain interval between the start subframe of the feedback message and a last subframe of an n-th transport block scheduled in the DCI, and

wherein n is a predefined value.

10. The method of claim 8 ,

wherein in case that the DCI is mapped onto a UE-specific search space, the scheduling information included in the DCI corresponds to information about specific transport block included in the multiple transport blocks, or information about all transport blocks included in the multiple transport blocks,

wherein the DCI includes a new data indicator (NDI) field where each bit in the NDI field indicates an initial transmission or retransmission state for each transport block in the multiple transport blocks, and

wherein a size of the NDI field corresponds to a number of the multiple transport blocks scheduled by the DCI.

11. The method of claim 8 , wherein the method further comprises:

transmitting, to the UE, a RRC message indicating a time gap between a first transport block and a second transport block the multiple transport blocks.

12. The method of claim 8 , wherein the method further comprises:

receiving, from the UE, multiple transport blocks via physical uplink shared channel (PUSCH); and

transmitting, to the UE, a DCI including early termination information for the PUSCH,

wherein in case that an early termination of the PUSCH transmission is configured for the UE, the DCI including early termination information is identified as an acknowledgment (ACK) feedback for the PUSCH by the UE.

13. A user equipment (UE) in a wireless communication system, the UE comprising:

a transceiver; and

at least one controller coupled to the transceiver and configured to:

receive, from a base station (BS), a radio resource control (RRC) message including configuration information related to multiple transport blocks,

identify whether feedback bundling is enabled or disabled for the multiple transport blocks based on the RRC message,

receive, from the BS, downlink control information (DCI) including scheduling information for receiving the multiple transport blocks,

receive, from the BS, the multiple transport blocks based on the scheduling information included in the DCI, and

transmit, to the BS, a feedback message including feedback information for the received multiple transport blocks,

wherein the feedback information includes a response to a number of transport blocks indicated by the DCI among the multiple transport blocks in case that the feedback bundling is enabled, and

wherein the feedback information includes a response to one transport block among the multiple transport blocks in case that the feedback bundling is disabled.

14. The UE of claim 13 , wherein the at least one controller is further configured to:

identify a frequency domain position and a time domain position of the feedback message; and

transmit, to the BS, the feedback message based on the frequency domain position and the time domain position,

wherein the frequency domain position is identified based on the DCI,

wherein the time domain position is identified based on at least one of a time-domain interval between a start subframe of the feedback message and a last subframe of a last transport block, or a time-domain interval between the start subframe of the feedback message and a last subframe of an n-th transport block scheduled in the DCI, and

wherein n is a predefined value.

15. The UE of claim 13 ,

wherein in case that the DCI is mapped onto a UE-specific search space, the scheduling information included in the DCI corresponds to information about specific transport block included in the multiple transport blocks, or information about all transport blocks included in the multiple transport blocks,

wherein the DCI includes a new data indicator (NDI) field where each bit in the NDI field indicates an initial transmission or retransmission state for each transport block in the multiple transport blocks, and

wherein a size of the NDI field corresponds to a number of the multiple transport blocks scheduled by the DCI.