Wireless communication method, user equipment, and base station

1 . A physical uplink control channel transmission method for execution by a user equipment (UE), comprising:

receiving a cell group configuration conveyed through a radio resource control (RRC) signaling, wherein the cell group configuration comprises one or more RRC parameters for configuring at least one second type cell/carrier that supports physical uplink control channel (PUCCH) cell/carrier switching and for enabling a function of dynamic cell/carrier switching, for each PUCCH group of a plurality of PUCCH groups;

receiving PUCCH-related information;

receiving a first physical downlink shared channel (PDSCH) and corresponding first downlink control information (DCI) comprising a first PUCCH cell/carrier indication;

determining a slot/sub-slot location n for transmitting uplink control information (UCI) on a PUCCH, wherein n is a natural number slot/sub-slot index;

determining, with the function of dynamic PUCCH cell/carrier switching being enabled, a cell/carrier at the slot/sub-slot location n based on the first PUCCH cell/carrier indication and the received PUCCH-related information, wherein the determined cell/carrier comprises a first type cell/carrier or one of the at least one second type cell/carrier; and

transmitting the PUCCH on the determined cell/carrier at the slot/sub-slot location n;

wherein the slot/sub-slot location n for transmitting the PUCCH is determined based on a hybrid automatic repeat request (HARQ) feedback timing offset K1, the HARQ feedback timing offset K1 is selected from a K1 set, and the K1 set is associated with numerology of the determined cell/carrier.

2 . The wireless communication method of claim 1 , wherein the UE determines to transmit the PUCCH on the one of the at least one second type cell/carrier at the slot/sub-slot location n when the first PUCCH cell/carrier indication indicates transmission of the PUCCH on the one of the at least one second type cell/carrier at the slot/sub-slot location n, and at least one of the following conditions in the received PUCCH-related information is satisfied:

in addition to the first type cell/carrier, at least one second type cell/carrier supporting PUCCH cell/carrier switching within a PUCCH group comprising the first type cell/carrier is activated; and

an uplink (UL) bandwidth part (BWP) of the at least one second type cell/carrier supporting PUCCH cell/carrier switching within the PUCCH group is activated.

3 . The wireless communication method of claim 1 , wherein the UE determines to transmit the PUCCH on the one of the at least one second type cell/carrier at the slot/sub-slot location n when at least one bit of the first PUCCH cell/carrier indication associated with the slot/sub-slot location n is other than zero.

4 . The wireless communication method of claim 1 , wherein the UE determines to transmit PUCCH on the first type cell/carrier when the first PUCCH cell/carrier indication indicates the transmission of the PUCCH on the first type cell/carrier at the slot/sub-slot location n, or when at least one of the following conditions in the received PUCCH-related information is satisfied:

at least one second type cell/carrier supporting PUCCH cell/carrier switching within a PUCCH group is not activated, or

a UL BWP of the at least one second type cell/carrier supporting PUCCH cell/carrier switching within the PUCCH group is not activated.

5 . The wireless communication method of claim 1 , wherein the UE determines to transmit the PUCCH on the first type cell/carrier at the slot/sub-slot location n when each bit of the first PUCCH cell/carrier indication associated with the slot/sub-slot location n is zero.

6 . The wireless communication method of claim 1 , wherein the first PDSCH is received at a slot/sub-slot location n-K1, K1 being a positive integer HARQ feedback timing offset, the UE determines the slot/sub-slot location n based on the HARQ feedback timing offset K1 indicated in the first DCI for transmitting a Type 1 HARQ-ACK codebook comprising a HARQ-ACK bit responding to the received first PDSCH, wherein the HARQ feedback timing offset K1 is determined based on numerology of the determined cell/carrier indicated in the first PUCCH cell/carrier indication, and the K1 set used for constructing the Type 1 HARQ-ACK codebook is associated with the determined cell/carrier indicated in the first PUCCH cell/carrier indication.

7 . The wireless communication method of claim 6 , wherein the UE further receives a second PDSCH and corresponding second DCI at a slot/sub-slot location n-K1′ wherein K1′<K1, the UE determines the same slot/sub-slot location n for HARQ-ACK transmission responding to the received second PDSCH based on a HARQ feedback timing offset K1′ indicated in the second DCI, a PUCCH resource used for the Type 1 HARQ-ACK codebook transmission is determined according to a PUCCH resource indication (PRI) of the second DCI.

8 . The wireless communication method of claim 7 , wherein when the second DCI comprises a second PUCCH cell/carrier indication, then the HARQ feedback timing offset K1′ is determined based on numerology of the determined cell/carrier indicated in the second PUCCH cell/carrier indication, and the K1 set used for constructing the Type 1 HARQ-ACK codebook is associated with the determined cell/carrier indicated in the second PUCCH cell/carrier indication.

9 . The wireless communication method of claim 2 , wherein at least one PUCCH resource for transmission of the PUCCH at the slot/sub-slot location n is configured for each one of the at least one second type cell/carrier supporting PUCCH cell/carrier switching, and a PUCCH resource used for transmission of the PUCCH is indicated by a PRI in the first DCI, wherein the PRI is with respect to the at least one PUCCH resource configured for the one of the at least one second type cell/carrier indicated in the first PUCCH cell/carrier indication.

10 . The wireless communication method of claim 9 , wherein conditions in the received PUCCH-related information further comprise an additional condition, and the additional condition is that the PUCCH resource for transmission of the PUCCH at the slot/sub-slot location n of the one of the at least one second type cell/carrier indicated in the first PUCCH cell/carrier indication is not collided with one or more non-UL symbols.

11 . The wireless communication method of claim 9 , wherein the at least one PUCCH resource for one of the at least one second type cell/carrier supporting PUCCH cell/carrier switching is configured separately from at least one PUCCH resource for one of the at least one second type cell/carrier not supporting PUCCH cell/carrier switching.

12 . The wireless communication method of claim 1 , wherein the first type cell/carrier is one of primary cell (PCell), primary secondary cell (PSCell), or PUCCH-SCell in the PUCCH group, and the one of the at least one second type cell/carrier is one of at least one SCell within the same PUCCH group of the first type cell/carrier, one or more than one PUCCH group supporting PUCCH cell/carrier switching is configured for the UE.

13 . The wireless communication method of claim 1 , wherein a supported priority level for a HARQ-ACK codebook or a supported codebook type of the HARQ-ACK codebook for one of the at least one second type cell/carrier supporting PUCCH cell/carrier switching is configured for the UE.

14 . The wireless communication method of claim 1 , wherein the first DCI comprises a field of a priority level indication to indicate a priority level of a HARQ-ACK codebook to be transmitted on the PUCCH of the determined cell/carrier indicated in the first PUCCH cell/carrier indication.

15 . A wireless communication method for execution by a base station, comprising:

transmitting a cell group configuration through a radio resource control (RRC) signaling, wherein the cell group configuration comprises one or more RRC parameters for configuring at least one second type cell/carrier that supports physical uplink control channel (PUCCH) cell/carrier switching and for enabling a function of dynamic cell/carrier switching, for each PUCCH group of a plurality of PUCCH groups;

transmitting PUCCH-related information;

transmitting a first physical downlink shared channel (PDSCH) and corresponding first downlink control information (DCI) comprising a first PUCCH cell/carrier indication; and

receiving, on a cell/carrier at a slot/sub-slot location n, uplink control information (UCI) on a PUCCH, wherein n is a natural number slot/sub-slot index;

with the function of dynamic PUCCH cell/carrier switching being enabled, the cell/carrier is determined based on the first PUCCH cell/carrier indication and the transmitted PUCCH-related information, wherein the determined cell/carrier comprises a first type cell/carrier or one of the at least one second type cell/carrier;

wherein the slot/sub-slot location n for receiving the PUCCH is determined based on a hybrid automatic repeat request (HARQ) feedback timing offset K1, the HARQ feedback timing offset K1 is selected from a K1 set, and the K1 set is associated with numerology of the determined cell/carrier.

16 . The wireless communication method of claim 15 , wherein the PUCCH is received by the base station on the one of the at least one second type cell/carrier at the slot/sub-slot location n when the first PUCCH cell/carrier indication indicates transmission of the PUCCH on the one of the at least one second type cell/carrier at the slot/sub-slot location n, and at least one of the following conditions in the transmitted PUCCH-related information is satisfied:

in addition to the first type cell/carrier, at least one second type cell/carrier supporting PUCCH cell/carrier switching within a PUCCH group comprising the first type cell/carrier is activated by the base station, an uplink (UL) bandwidth part (BWP) of the at least one second type cell/carrier supporting PUCCH cell/carrier switching within the PUCCH group is activated by the base station, and at least one bit of the first PUCCH cell/carrier indication associated with the slot/sub-slot location n is other than zero.

17 . The wireless communication method of claim 15 , wherein the PUCCH is received by the base station on the first type cell/carrier when the first PUCCH cell/carrier indication indicates transmission of the PUCCH on the first type cell/carrier at the slot/sub-slot location n, wherein each bit of the first PUCCH cell/carrier indication associated with the slot/sub-slot location n is zero, or when at least one of the following conditions in the received PUCCH-related information is satisfied:

at least one second type cell/carrier supporting PUCCH cell/carrier switching within a PUCCH group is not activated by the base station, or

a UL BWP of the at least one second type cell/carrier supporting PUCCH cell/carrier switching within the PUCCH group is not activated by the base station.

18 . The wireless communication method of claim 15 , wherein the first PDSCH is transmitted by the base station at a slot/sub-slot location n-K1, K1 being a positive integer HARQ feedback timing offset, the slot/sub-slot location n is determined based on the HARQ feedback timing offset K1 indicated in the first DCI for receiving a Type 1HARQ-ACK codebook comprising a HARQ-ACK bit responding to the transmitted first PDSCH, wherein the HARQ feedback timing offset K1 is determined based on numerology of the cell/carrier indicated in the first PUCCH cell/carrier indication, and the K1 set for constructing the Type 1 HARQ-ACK codebook is associated with the cell/carrier indicated in the first PUCCH cell/carrier indication.

19 . The wireless communication method of claim 18 , wherein the base station further transmits a second PDSCH and corresponding second DCI at a slot/sub-slot location n-K1′ wherein K1′<K1, HARQ-ACK reception responding to the transmitted second PDSCH is received at the slot/sub-slot location n based on a HARQ feedback timing offset K1′ indicated in the second DCI, a PUCCH resource used for the Type 1 HARQ-ACK codebook transmission is determined according to a PUCCH resource indication (PRI) of the second DCI, wherein the PRI is with respect to at least one PUCCH resource configured by the base station for the cell/carrier indicated in the first PUCCH cell/carrier indication.

20 . The wireless communication method of claim 15 , wherein the first type cell/carrier is one of primary cell (PCell), primary secondary cell (PSCell), or PUCCH-SCell in the PUCCH group, and the one of the at least one second type cell/carrier is one of at least one SCell within the same PUCCH group of the first type cell/carrier, one or more than one PUCCH group supporting PUCCH cell/carrier switching is configured by the base station.

21 . A user equipment (UE), comprising:

a transceiver;

a memory storing instructions; and

a processor executing the instructions to perform:

receiving a cell group configuration conveyed through a radio resource control (RRC) signaling, wherein the cell group configuration comprises one or more RRC parameters for configuring at least one second type cell/carrier that supports PUCCH cell/carrier switching and for enabling a function of dynamic cell/carrier switching, for each PUCCH group of a plurality of PUCCH groups;

receiving physical uplink control channel (PUCCH)-related information;

receiving a first physical downlink shared channel (PDSCH) and corresponding first downlink control information (DCI) comprising a first PUCCH cell/carrier indication;

determining a slot/sub-slot location n for transmitting uplink control information (UCI) on a PUCCH, wherein n is a natural number slot/sub-slot index;

determining, with the function of dynamic PUCCH cell/carrier switching being enabled, a cell/carrier at the slot/sub-slot location n based on the first PUCCH cell/carrier indication and the received PUCCH-related information, wherein the determined cell/carrier comprises a first type cell/carrier or one of the at least one second type cell/carrier; and

transmitting the PUCCH on the determined cell/carrier at the slot/sub-slot location n;

wherein the slot/sub-slot location n for transmitting the PUCCH is determined based on a hybrid automatic repeat request (HARQ) feedback timing offset K1, the HARQ feedback timing offset K1 is selected from a K1 set, and the K1 set is associated with numerology of the determined cell/carrier.