Uplink channel transmission using transmit beam diversity to multi-transmit-receive points(TRPS)

1 . An uplink channel transmission method, performed by a terminal device, comprising:

performing two adjacent repetitive transmissions of same data in an uplink channel on a first transmission resource and a second transmission resource respectively;

wherein the two adjacent repetitive transmissions use different transmitting beams to transmit to different Transmit-Receive Points (TRP) of a same base station, a beam switching time for switching a beam direction is presented between time-domain resources of the first transmission resource and the second transmission resource; the first transmission resource corresponds to a former transmission occasion in two adjacent transmission occasions for uplink channel transmitting; the second transmission resource corresponds to a latter transmission occasion in the two adjacent transmission occasions for uplink channel transmitting;

wherein the method further comprises:

determining the first transmission resource and the second transmission resource based on a resource configuration of the uplink channel, wherein the second transmission resource is determined by delaying a beam switching time behind the first transmission resource;

wherein the method is applied to a repetitive transmission of a physical uplink control channel (PUCCH) based on sub-slots within a slot; the resource configuration of the uplink channel comprises:

two consecutive sub-slots configured for the two adjacent repetitive transmissions; the beam switching time comprises X symbols, each of the two sub-slots comprises M symbols, X and M are positive integers, and X is smaller than or equal to M; an initial symbol configured for the two adjacent repetitive transmissions is an S-th symbol within the slot, and S is a positive integer;

determining the first transmission resource and the second transmission resource based on the resource configuration of the uplink channel comprises:

determining a first sub-slot starting from the S-th symbol as the first transmission resource; and

performing at least one of:

determining a second sub-slot starting from a (S+2M)-th symbol as the second transmission resource, wherein the (S+2M)-th symbol is obtained by delaying a sub-slot for the first transmission resource; or determining the second sub-slot starting from a (S+M+X)-th symbol as the second transmission resource, wherein the (S+M+X)-th symbol is obtained by delaying X symbols for the first transmission resource;

wherein determining the second sub-slot starting from the (S+2M)-th symbol as the second transmission resource comprises:

in response to that last Z symbols in the second sub-slot starting from the (S+2M)-th symbol exceed a slot boundary of the slot, determining former (M−Z) symbols in the second sub-slot as the second transmission resource, wherein Z is a positive integer smaller than M;

or,

determining the second sub-slot starting from the (S+M+X)-th symbol as the second transmission resource comprises:

in response to that last Z symbols in the second sub-slot starting from the (S+M+Z)-th symbol exceed a slot boundary of the slot, determining former (M−Z) symbols in the second sub-slot as the second transmission resource, wherein Z is a positive integer smaller than M.

2 . The method according to claim 1 , wherein the method further comprises:

determining the first transmission resource and the second transmission resource based on the resource configuration of the uplink channel, wherein the resource configuration comprises: the beam switching time is configured as an invalid symbol, and the first transmission resource and the second transmission resource are determined from valid symbols indicated by the resource configuration.

3 . The method according to claim 1 , wherein the beam switching time is configured or pre-defined by a network device.

4 . The uplink channel transmission method according to claim 1 , wherein a network device receives the two adjacent repetitive transmissions of same data in the uplink channel on the first transmission resource and the second transmission resource respectively.

5 . The method according to claim 4 , wherein the network device sends the resource configuration of the uplink channel to the terminal device, wherein the first transmission resource and the second transmission resource are determined based on the resource configuration, the resource configuration comprises:

the beam switching time is configured as an invalid symbol, and the first transmission resource and the second transmission resource are determined from valid symbols indicated by the resource configuration.

6 . A terminal device, comprising: a processor; and a transceiver connected with the processor; wherein

the transceiver is configured to perform the uplink channel transmission method according to claim 1 .

7 . A non-transitory computer-readable storage medium, storing an executable instruction, wherein the executable instruction is loaded and executed by a processor to perform the uplink channel transmission method according to claim 1 .

8 . An uplink channel transmission method, performed by a terminal device, comprising:

performing two adjacent repetitive transmissions of same data in an uplink channel on a first transmission resource and a second transmission resource respectively;

wherein the two adjacent repetitive transmissions use different transmitting beams to transmit to different Transmit-Receive Points (TRP) of a same base station, a beam switching time for switching a beam direction is presented between time-domain resources of the first transmission resource and the second transmission resource; the first transmission resource corresponds to a former transmission occasion in two adjacent transmission occasions for uplink channel transmitting; the second transmission resource corresponds to a latter transmission occasion in the two adjacent transmission occasions for uplink channel transmitting;

wherein the method further comprises:

determining the first transmission resource and the second transmission resource based on a resource configuration of the uplink channel, wherein the second transmission resource is determined by delaying the beam switching time behind the first transmission resource;

wherein the method is applied to a repetitive transmission of a physical uplink control channel (PUCCH) based on a PUCCH resource within a slot;

the resource configuration of the uplink channel comprises: N symbols configured for the two adjacent repetitive transmissions on the PUCCH resource, and Y symbols are presented between a last symbol of the N symbols and a first symbol in a next slot; the beam switching time comprises X symbols, X, Y and N are positive integers; an initial symbol configured for the two adjacent repetitive transmissions is a S-th symbol within the slot, and S is a positive integer;

wherein X is smaller than or equal to Y, and determining the first transmission resource and the second transmission resource based on the resource configuration of the uplink channel comprises:

computing N/2 and rounding down to obtain N3;

computing N/2 and rounding up to obtain N4;

determining N3 symbols starting from the S-th symbol as the first transmission resource; and

determining N4 symbols starting from a (S+N3+X)-th symbol as the second transmission resource, wherein the (S+N3+X)-th symbol is obtained by delaying X symbols for the first transmission resource;

or,

wherein X is greater than or equal to Y, and determining the first transmission resource and the second transmission resource based on the resource configuration of the uplink channel comprises:

computing N/2 and rounding down to obtain N3;

computing N/2 and rounding up to obtain N4;

determining N3 symbols starting from the S-th symbol as the first transmission resource; and

determining (N4−(X−Y)) symbols starting from a (S+N3+X)-th symbol as the second transmission resource, wherein the (S+N3+X)-th symbol is obtained by delaying X symbols for the first transmission resource.

9 . An uplink channel transmission method, performed by a terminal device, comprising:

performing two adjacent repetitive transmissions of same data in an uplink channel on a first transmission resource and a second transmission resource respectively;

wherein the two adjacent repetitive transmissions use different transmitting beams to transmit to different Transmit-Receive Points (TRP) of a same base station, a beam switching time for switching a beam direction is presented between time-domain resources of the first transmission resource and the second transmission resource; the first transmission resource corresponds to a former transmission occasion in two adjacent transmission occasions for uplink channel transmitting; the second transmission resource corresponds to a latter transmission occasion in the two adjacent transmission occasions for uplink channel transmitting;

wherein the method further comprises:

determining the first transmission resource and the second transmission resource based on a resource configuration of the uplink channel, wherein the second transmission resource is determined by delaying the beam switching time behind the first transmission resource;

wherein the method is applied to repetitive transmission of a physical uplink shared channel (PUSCH) within a slot with a cross-slot transmissible capability and configured based on a nominal transmission occasion; the resource configuration of the uplink channel comprises:

two consecutive nominal transmission occasions configured for the two adjacent repetitive transmissions, each of the nominal transmission occasions occupies time-domain resources of A symbols, the beam switching time comprises X symbols, and X and A are positive integers; an initial symbol of the two adjacent repetitive transmissions is an S-th symbol within a slot, and S is a positive integer;

determining the first transmission resource and the second transmission resource based on the resource configuration of the uplink channel comprises:

determining A symbols starting from the S-th symbol as the first transmission resource; and

determining A symbols starting from a (S+A+X)-th symbol as the second transmission resource, wherein the (S+A+X)-th symbol is obtained by delaying X symbols for the first transmission resource.

10 . The method according to claim 9 , wherein the resource configuration of the uplink channel further comprises:

K nominal transmission occasions configured for K times of repetitive transmissions based on the PUSCH resource, wherein the K nominal transmission occasions totally occupy time resources of K*A symbols, wherein the operation “*” represents a multiplication, and K is an integer greater than 1; the method further comprises:

in response to that at least one symbol in transmission resources corresponding to an i-th delayed repetitive transmission is located behind the K*A symbols, continuing performing the i-th delayed repetitive transmission on the transmission resources corresponding to the i-th delayed repetitive transmission, wherein i is a positive integer smaller than or equal to K; or,

in response to that W symbols in transmission resources corresponding to an i-th delayed repetitive transmission is located behind the K*A symbols, performing the i-th delayed repetitive transmission of the uplink channel on former (A-W) symbols of transmission resources corresponding to the i-th delayed repetitive transmission, wherein W is a positive integer smaller than A, and i is a positive integer smaller than or equal to K; and in response to that i is not equal to K, canceling repetitive transmissions after the i-th delayed repetitive transmission.