Method for transmitting or receiving a physical channel to improve reliability based on multiple transmission reception points (TRPS) in wireless communication system, and device for the same
A method for transmitting or receiving a physical channel to improve reliability based on multiple transmission reception points (TRPs) in a wireless communication system, and a device for the same.
1. A method of transmitting and receiving, by a user equipment (UE), a physical channel in a wireless communication system, the method comprising:
receiving configuration information;
receiving control information including a plurality of L pieces of beam information (spatial relation information, Transmission Configuration Indication (TCI) state); and
performing transmission of an uplink channel or reception of a downlink channel based on the control information,
wherein a repetitive transmission scheme combining two or more of i) Spatial Division Multiplexing (SDM), ii) Frequency Division Multiplexing (FDM) or iii) Time Division Multiplexing (TDM) is configured based on the configuration information,
a plurality of m transmission occasions are configured based on the repetitive transmission scheme,
each of the transmission occasions is indexed based on a positive integer i including 0,
the plurality of pieces of beam information respectively relate to the transmission occasions based on the order of the plurality of transmission occasions based on a predefined rule, and
based on the number L of beam information being smaller than the number m of plurality of transmission occasions (TOs), the rule is predefined so that the beam information relating to (i) an index of beam information mapped to TO (i−L) and (ii) an index determined based on a specific offset value is mapped to the TO i with i>=L.
2. The method of claim 1 , wherein the beam information mapped to TO i with i>=L is beam information relating to an index determined based on a modular operation of a value acquired by adding (i) the index of the beam information mapped to TO (i−L) and (ii) the specific offset value, and the number L of beam information.
3. The method of claim 2 , further comprising:
receiving information on the offset value.
4. The method of claim 3 , wherein the receiving of the information on the offset value includes
receiving a plurality of candidate values through a higher layer parameter, and
receiving information for a specific offset value among the plurality of candidate values.
5. The method of claim 1 , wherein the index of the beam information mapped to TO_i with i>=L is determined based on ((i+floor(i/L)) % L), and % represents the modulator operation.
6. The method of claim 1 , further comprising:
transmitting capability information,
wherein the capability information includes information on whether the UE supporting the repetitive transmission scheme in which two or more are combined.
7. The method of claim 1 , wherein based on the repetitive transmission scheme in which FDM and TDM are combined being configured based on the configuration information, the plurality of TOs is constituted by frequency resources and time resources.
8. The method of claim 7 , wherein the order of the plurality of TOs is determined by prioritizing the frequency resource.
9. The method of claim 7 , wherein the frequency resource includes a plurality of physical resource blocks (PRB), and
whether to apply the predefined rule is determined on a size of one PRB.
10. The method of claim 7 , wherein the frequency resource includes a plurality of resource blocks, and
the predefined rule is applied based on the plurality of resource blocks being allocated by localized mapping.
11. A user equipment (UE) of transmitting and receiving a physical channel in a wireless communication system, the UE comprising:
one or more transceivers;
one or more processors; and
one or more memories storing instructions for operations executed by the one or more processors and connected to the one or more processors,
wherein the operations include;
receiving configuration information;
receiving control information including a plurality of L pieces of beam information (spatial relation information, Transmission Configuration Indication (TCI) state); and
performing transmission of an uplink channel or reception of a downlink channel based on the control information,
wherein a repetition transmission scheme combining two or more of i) Spatial Division Multiplexing (SDM), ii) Frequency Division Multiplexing (FDM) or iii) Time Division Multiplexing (TDM) is configured based on the configuration information,
a plurality of m transmission occasions are configured based on the repetitive transmission scheme,
each of the transmission occasions is indexed based on a positive integer i including 0,
the plurality of pieces of beam information respectively relate to the transmission occasions based on the order of the plurality of transmission occasions based on a predefined rule, and
based on the number L of beam information being smaller than the number m of plurality of transmission occasions (TOs), the rule is predefined so that the beam information relating to (i) an index of beam information mapped to TO (i−L) and (ii) an index determined based on a specific offset value is mapped to the TO i with i>=L.
12. The UE of claim 11 , wherein the beam information mapped to TO i with i>=L is beam information relating to an index determined based on a modular operation of a value acquired by adding (i) the index of the beam information mapped to TO (i−L) and (ii) the specific offset value, and the number L of beam information.
13. The UE of claim 12 , wherein the operations further comprising:
receiving information on the offset value.
14. The UE of claim 11 , wherein the index of the beam information mapped to TO_i with i>=L is determined based on ((i+floor(i/L)) % L), and % represents the modulator operation.
15. A device comprising: one or more memories and one or more processors functionally connected to the one or more memories,
wherein the one or more processors are configured to control the device to;
receive configuration information,
receive control information including a plurality of L pieces of beam information (spatial relation information, Transmission Configuration Indication (TCI) state); and
perform transmission of an uplink channel or reception of a downlink channel based on the control information,
wherein a repetition transmission scheme combining two or more of i) Spatial Division Multiplexing (SDM), ii) Frequency Division Multiplexing (FDM) or iii) Time Division Multiplexing (TDM) is configured based on the configuration information,
a plurality of m transmission occasions are configured based on the repetitive transmission scheme,
each of the transmission occasions is indexed based on a positive integer i including 0,
the plurality of pieces of beam information respectively relate to the transmission occasions based on the order of the plurality of transmission occasions based on a predefined rule, and
based on the number L of beam information being smaller than the number m of plurality of transmission occasions (TOs), the rule is predefined so that the beam information relating to (i) an index of beam information mapped to TO (i−L) and (ii) an index determined based on a specific offset value is mapped to the TO i with i>=L.