Method and apparatus for allocating resource in wireless communication system
Disclosed is a method for allocating resource in a wireless communication system includes: allocating, by a base station (BS), an uplink resource region for transmission of uplink control information (UCI) of a user equipment (UE) to the UE, the UCI being information related to multiple downlink cells; and receiving the UCI from the UE through the allocated uplink resource region on at least one uplink cell.
1. A method of receiving, by a base station (BS), uplink control information (UCI) in a wireless communication system, the method comprising:
transmitting, to a user equipment (UE), physical uplink control channel (PUCCH) resource information for the UCI; and
receiving, from the UE, the UCI on a PUCCH resource,
wherein the UCI is hybrid automatic repeat request (HARQ) feedback information of multiple downlink cells,
wherein, for each of multiple slots in a time domain, the PUCCH resource comprises multiple consecutive resource blocks (RBs) in a frequency domain, and
wherein a long demodulation reference signal (DMRS) sequence is generated for the entirety of multiple consecutive n consecutive RBs.
2. The method of claim 1 , wherein the same orthogonal cover code (OCC) index is used in each of multiple consecutive RBs.
3. The method of claim 1 , further comprising:
transmitting, to the UE, control information related to determination of the PUCCH resource,
wherein the control information includes at least one of candidate list information of the PUCCH resource or a specific field for a specific PUCCH resource for transmitting the UCI among candidates of the PUCCH resource.
4. The method of claim 3 , wherein the specific field is set to be the same for every cell group.
5. The method of claim 1 , further comprising:
transmitting, to the UE, downlink control information (DCI) including a transmit power control (TPC) command of the PUCCH resource through a specific cell among the multiple downlink cells.
6. The method of claim 1 , wherein
the multiple downlink cells include multiple cell groups (CGs), and
Reed-Muller (RM) coding is separately performed on UCIs by cell groups or is collectively performed on the entire cell groups.
7. The method of claim 6 , wherein when the UCIs are separately coded by cell groups, single RM coding or dual RM coding is performed depending on the number of bits of the UCIs divided by cell groups.
8. The method of claim 7 , wherein when the UCIs are separately RM-coded and output by cell groups, RM interleaving is not performed on coded bits of the output UCIs.
9. The method of claim 6 , wherein when there is no scheduling of UCI transmission regarding a specific cell group among the multiple cell groups, UCI transmission regarding the specific cell group without scheduling is dropped.
10. The method of claim 6 , wherein when single coding is performed on the entire UCIs, the UCIs are divided to correspond to a number of PUCCH resources allocated to the UE.
11. The method of claim 10 , wherein single RM coding or dual RM coding is performed on each of the divided UCIs in consideration of the number of bits of each of the divided UCIs.
12. The method of claim 11 , wherein RM interleaving is performed on coded bits of each UCI output through the RM coding.
13. The method of claim 12 , wherein, in RB mapping of the RM-interleaved UCIs, the UCIs are first mapped to a specific RB of a first slot and subsequently mapped to an RB in a second slot with the specific RB.
14. The method of claim 12 , wherein, in RB mapping of the RM-interleaved UCIs, after mapping of the UCIs to RBs of a first slot is finished, the UCIs are mapped to RBs of a second slot.
15. The method of claim 1 , wherein the HARQ feedback information includes a HARQ feedback for each cell of the multiple downlink cells.
16. A method of transmitting, by a user equipment (UE), uplink control information (UCI) in a wireless communication system, the method comprising:
receiving, from a base station (BS), physical uplink control channel (PUCCH) resource information for the UCI; and transmitting, to the BS, the UCI on a PUCCH resource,
wherein the UCI is hybrid automatic repeat request (HARQ) feedback information of multiple downlink cells,
wherein, for each of multiple slots in a time domain, the PUCCH resource comprises multiple consecutive resource blocks (RBs) in a frequency domain, and
wherein a long demodulation reference signal (DMRS) sequence is generated for the entirety of multiple consecutive RBs.
17. The method of claim 16 , wherein the HARQ feedback information includes a HARQ feedback for each cell of the multiple downlink cells.
18. A user equipment (UE) for transmitting uplink control information (UCI) in a wireless communication system, the UE comprising:
at least one transceiver configured to transmit and receive a radio signal; and
at least one processor functionally connected to the at least one transceiver, wherein the processor is configured to:
control the transceiver to receive, from a base station (BS), physical uplink control channel (PUCCH) resource information for the UCI; and control the transceiver to transmit, to the BS, the UCI on a PUCCH resource,
wherein the UCI is hybrid automatic repeat request (HARQ) feedback information of multiple downlink cells,
wherein, for each of multiple slots in a time domain, the PUCCH resource comprises multiple consecutive resource blocks (RBs) in a frequency domain, and
wherein a long demodulation reference signal (DMRS) sequence is generated for the entirety of multiple consecutive RBs.
19. The UE of claim 18 , wherein the HARQ feedback information includes a HARQ feedback for each cell of the multiple downlink cells.