Method and device for repeatedly transmitting uplink channel in wireless communication system
Disclosed are a method and device for repeatedly transmitting an uplink channel in a wireless communication system. A method for a terminal to repeatedly transmit an uplink channel in a wireless communication system according to an embodiment of the present disclosure comprises: an uplink channel mapping step for mapping one uplink channel to a plurality of transmission occasions (TO) associated with a plurality of transmission units (TU) that are fewer in number than the plurality of TOs, wherein each of one or more specific TUs among the plurality of TUs includes two or more contiguous TOs; a step for mapping a spatial relation reference signal (RS) to each of the plurality of TOs; and a step for transmitting the one uplink channel to a base station at each of the plurality of TOs on the basis of the spatial relation reference signals, wherein the spatial relation reference signals to be mapped to the two or more contiguous TOs included in the one or more specific TUs may be identical or different.
1. A method comprising:
receiving, by a terminal from a base station, information including a parameter of a number of repetitions related to an uplink channel, wherein a number of configured repetitions is given by the parameter of the number of repetitions;
mapping the uplink channel to a plurality of actual repetitions, wherein a configured repetition includes one or more actual repetitions, and the configured repetitions include at least one first configured repetition each including two or more actual repetitions and at least one second configured repetition each including one actual repetition;
mapping at least one sounding reference signal (SRS) resource to the configured repetitions according to an associated SRS resource set of each of the configured repetitions, wherein the at least one SRS resource of the associated SRS resource set is indicated by at least one SRS resource indicator (SRI) given by downlink control information (DCI); and
transmitting, by the terminal to a base station, the uplink channel based on the at least one SRS resource in each of the plurality of actual repetitions,
wherein the at least one SRS resource mapped to the two or more actual repetitions included in each of the at least one first configured repetition are same,
wherein, based on a plurality of SRS resource sets being configured, an association of the plurality of SRS resource sets to the configured repetitions is based on a predetermined mapping scheme,
wherein, based on the plurality of SRS resource sets including a first SRS resource set and a second SRS resource set, the predetermined mapping scheme is:
a first mapping pattern of the first SRS resource set and the second SRS resource set being applied to an earliest configured repetition and a next configured repetition, respectively, and the first mapping pattern being further applied to at least one remaining configured repetition; or
a second mapping pattern of the first SRS resource set being applied to earliest multiple configured repetitions, and the second SRS resource set being applied to next multiple configured repetitions, and the second mapping pattern being further applied to at least one remaining configured repetition.
2. The method of claim 1 ,
wherein the at least one SRS resource mapped to each of the two or more actual repetitions included in one of the at least one first configured repetition is based on a same at least one SRI in the associated SRS resource set of the at least one first configured repetition.
3. The method of claim 1 ,
wherein each of the two or more contiguous actual repetitions included in the each of the at least one first configured repetition includes at least one symbol within a slot.
4. The method of claim 1 , further comprising:
receiving configuration information by the terminal from the base station,
wherein the configuration information includes information on at least one of:
a repetition level for the uplink channel,
a number of time resource unit and/or frequency resource unit included in one TU,
a repetition transmission periodicity for the uplink channel, or
at least one SRS resource set associated with at least one repetition level.
5. The method of claim 1 ,
wherein the uplink channel includes at least one of a physical uplink control channel (PUCCH), or a physical uplink shared channel (PUSCH).
6. A terminal comprising:
at least one transceiver; and
at least one processor connected to the at least one transceiver,
wherein the at least one processor is configured to:
receive, from a base station through the at least one transceiver, information including a parameter of a number of repetitions related to an uplink channel, wherein a number of configured repetitions is given by the parameter of the number of repetitions;
map the uplink channel to a plurality of actual repetitions, wherein a configured repetition includes one or more actual repetitions, and the configured repetitions include at least one first configured repetition each including two or more actual repetitions and at least one second configured repetition each including one actual repetition;
map at least one sounding reference signal (SRS) resource to the configured repetitions according to an associated SRS resource set of each of the configured repetitions, wherein the at least one SRS resource of the associated SRS resource set is indicated by at least one SRS resource indicator (SRI) given by downlink control information (DCI); and
transmitting, to a base station through the at least one transceiver, the uplink channel based on the at least one SRS resource in each of the plurality of actual repetitions,
wherein the at least one SRS resource mapped to the two or more actual repetitions included in each of the at least one first configured repetition are same,
wherein, based on a plurality of SRS resource sets being configured, an association of the plurality of SRS resource sets to the configured repetitions is based on a predetermined mapping scheme,
wherein, based on the plurality of SRS resource sets including a first SRS resource set and a second SRS resource set, the predetermined mapping scheme is:
a first mapping pattern of the first SRS resource set and the second SRS resource set being applied to an earliest configured repetition and a next configured repetition, respectively, and the first mapping pattern being further applied to at least one remaining configured repetition; or
a second mapping pattern of the first SRS resource set being applied to earliest multiple configured repetitions, and the second SRS resource set being applied to next multiple configured repetitions, and the second mapping pattern being further applied to at least one remaining configured repetition.
7. A method comprising:
transmitting, by a base station to a terminal, information including a parameter of a number of repetitions related to an uplink channel, wherein a number of configured repetitions is given by the parameter of the number of repetitions; and
receiving, by the base station from the terminal, the uplink channel repeatedly based on at least one sounding reference signal (SRS) resource in each of a plurality of actual repetitions,
wherein the uplink channel is mapped to the plurality of actual repetitions, wherein a configured repetition includes one or more actual repetitions, and the configured repetitions include at least one first configured repetition each including two or more actual repetitions and at least one second configured repetition each including one actual repetition;
wherein the at least one SRS resource is mapped to the configured repetitions according to an associated SRS resource set of each of the configured repetitions, wherein the at least one SRS resource of the associated SRS resource set is indicated by at least one SRS resource indicator (SRI) given by downlink control information (DCI); and
wherein the at least one SRS resource mapped to the two or more actual repetitions included in each of the at least one first configured repetition are same,
wherein, based on a plurality of SRS resource sets being configured, an association of the plurality of SRS resource sets to the configured repetitions is based on a predetermined mapping scheme,
wherein, based on the plurality of SRS resource sets including a first SRS resource set and a second SRS resource set, the predetermined mapping scheme is:
a first mapping pattern of the first SRS resource set and the second SRS resource set being applied to an earliest configured repetition and a next configured repetition, respectively, and the first mapping pattern being further applied to at least one remaining configured repetition;
a second mapping pattern of the first SRS resource set being applied to earliest multiple configured repetitions, and the second SRS resource set being applied to next multiple configured repetitions, and the second mapping pattern being further applied to at least one remaining configured repetition.