Method for transmitting uplink signal in wireless communication system, and apparatus therefor
A method for transmitting, by a terminal, an uplink signal in a wireless communication system, according to one embodiment of the present specification, comprises the steps of: receiving an upper layer message related to setting of resource groups for a plurality of panels; receiving a lower layer message related to whether the resource groups are activated; and transmitting an uplink signal on the basis of the lower layer message. The uplink signal is transmitted on the basis of an activated resource group from among the resource groups.
1. A method of transmitting an uplink signal by a user equipment (UE) in a wireless communication system, the method comprising:
receiving a higher layer message related to a configuration of resource groups for a plurality of panels;
receiving a lower layer message related to whether the resource groups are activated; and
transmitting the uplink signal based on the lower layer message, wherein the uplink signal is transmitted based on an activated resource group among the resource groups,
wherein the uplink signal is transmitted after an average period of a first period and a second period from a time point of receiving the lower layer message,
wherein the first period is a first product of a first time and a first weight, and the second period is a second product of a second time and a second weight,
wherein the first time is a time required to decode the lower layer message, and the second time is a time required to activate a panel related to the activated resource group among the plurality of panels.
2. The method of claim 1 , wherein the resource groups are SRS resource groups.
3. The method of claim 2 , wherein the SRS resource groups are identical in at least one of a usage or a time domain behavior.
4. The method of claim 3 , wherein the usage includes at least one of antenna switching, beam management, codebook based uplink (UL), or non-codebook based UL.
5. The method of claim 3 , wherein the time domain behavior is an operation based on any one of periodic, aperiodic, and semi-persistent.
6. The method of claim 1 , wherein a different resource group is mapped to each of the plurality of panels based on a characteristic of the resource groups, and wherein the characteristic relates to power control or timing advance.
7. The method of claim 1 , wherein a different resource is mapped to each of the plurality of panels, and wherein the mapping is based on a number of antenna ports of each of the plurality of panels.
8. The method of claim 1 , wherein transmission of the uplink signal based on a deactivated resource group is stopped from a specific time, based on the resource group being periodically or semi-statically scheduled, and wherein the deactivated resource group is regarded as an invalid resource from the specific time based on the resource group being aperiodically scheduled.
9. The method of claim 8 , wherein the specific time is a time delayed by a predetermined value from the time point of receiving the lower layer message, and wherein the predetermined value is determined based on at least one of the first time or the second time.
10. The method of claim 1 , wherein the uplink signal is based on any one of a sounding reference signal (SRS), a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), or a physical random access channel (PRACH).
11. The method of claim 1 , wherein the activated resource group is related to spatial relation information related to the transmission of the uplink signal or an uplink resource where the uplink signal is transmitted.
12. A UE transmitting an uplink signal in a wireless communication system, the UE comprising:
one or more transceivers;
one or more processors; and
one or more memories operably connectible to the one or more processors and storing instructions to, when the transmission of the uplink signal is executed by the one or more processors, perform operations, wherein the operations include:
receiving a higher layer message related to a configuration of resource groups for a plurality of panels;
receiving a lower layer message related to whether the resource groups are activated; and
transmitting the uplink signal based on the lower layer message, wherein the uplink signal is transmitted based on an activated resource group among the resource groups,
wherein the uplink signal is transmitted after an average period of a first period and a second period from a time point of receiving the lower layer message,
wherein the first period is a first product of a first time and a first weight, and the second period is a second product of a second time and a second weight,
wherein the first time is a time required to decode the lower layer message, and the second time is a time required to activate a panel related to the activated resource group among the plurality of panels.
13. The UE of claim 12 , wherein the resource groups are SRS resource groups.
14. The UE of claim 13 , wherein the SRS resource groups are identical in at least one of a usage or a time domain behavior.
15. The UE of claim 12 , wherein a different resource group is mapped to each of the plurality of panels based on a characteristic of the resource groups, and wherein the characteristic relates to power control or timing advance.
16. The UE of claim 12 , wherein transmission of the uplink signal based on a deactivated resource group is stopped from a specific time, based on the resource group being periodically or semi-statically scheduled, and wherein the deactivated resource group is regarded as an invalid resource from the specific time based on the resource group being aperiodically scheduled.
17. One or more non-transitory computer-readable media storing one or more instructions, wherein the one or more instructions executable by one or more processors are configured to control a UE to:
receive a higher layer message related to a configuration of resource groups for a plurality of panels;
receive a lower layer message related to whether the resource groups are activated; and
transmit the uplink signal based on the lower layer message, wherein the uplink signal is transmitted based on an activated resource group among the resource groups,
wherein the uplink signal is transmitted after an average period of a first period and a second period from a time point of receiving the lower layer message,
wherein the first period is a first product of a first time and a first weight, and the second period is a second product of a second time and a second weight,
wherein the first time is a time required to decode the lower layer message, and the second time is a time required to activate a panel related to the activated resource group among the plurality of panels.