Method for reporting channel state information in wireless communication system, and device for same
地域：
Seoul
摘要
Disclosed are a method for reporting channel state information in a wireless communication system, and a device for same.Specifically, a method for a user equipment (UE) to report channel state information (CSI) in a wireless communication system includes: receiving bandwidth part (BWP) configuration information related to a BWP; receiving information for activating a specific bandwidth part among one or more bandwidth parts based on the BWP configuration information; receiving a reference signal; calculating CSI based on the reference signal; and transmitting the CSI by omitting a part of the CSI in the activated specific bandwidth part, based on a priority rule, wherein the CSI includes information related with coefficients, and each of elements of the information related to the coefficients is classified as a first group and a second group based on a priority value, wherein the priority value is determined as an order in which a higher index and a lower index of indexes of a frequency domain related to the elements are sequentially crossed based on a predefined specific index, and wherein a priority of the first group is defined as being higher than a priority of the second group in the priority rule.
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This application is the National Stage filing under 35 U.S.C. 371 of International Application No. PCT/KR2020/010743, filed on Aug. 13, 2020, which claims the benefit of (1) U.S. provisional Application 62/887,633, filed on Aug. 15, 2019, (2) U.S. provisional Application 62/887,643, filed on Aug. 15, 2019, (3) KR Application No. 10-2019-0123226, filed on Oct. 4, 2019, and (4) KR Application No. 10-2019-0123333, filed on Oct. 4, 2019, the contents of which are all hereby incorporated by reference herein in their entirety.
The present disclosure relates to a wireless communication system, and more particularly, to a method for reporting channel state information in consideration of a payload of channel state information, and a device for supporting the same.
Mobile communication systems have been developed to guarantee user activity while providing voice services. Mobile communication systems are expanding their services from voice only to data. Current soaring data traffic is depleting resources and users' demand for higher-data rate services is leading to the need for more advanced mobile communication systems.
權(quán)利要求
The invention claimed is:1. A method of reporting channel state information (CSI), by a user equipment (UE), in a wireless communication system, the method comprising:receiving bandwidth part (BWP) configuration information related to a BWP; receiving information for activating a specific bandwidth part among one or more bandwidth parts based on the BWP configuration information; receiving a reference signal; obtaining CSI based on the reference signal; and transmitting the CSI by omitting a part of the CSI in the activated specific bandwidth part, based on a priority rule, wherein the CSI includes information related with coefficients, and each of elements of the information related to the coefficients is classified as a first group and a second group based on a priority value, wherein the priority value is determined based on i) a layer index ii) an index of a spatial domain related to each of the elements and iii) an index of a frequency domain related to each of the elements, wherein the priority value is determined as an order in which a higher index and a lower index of indexes of a frequency domain related to the elements are sequentially crossed based on a predefined specific index, and wherein a priority of the first group is defined as higher than a priority of the second group in the priority rule. 2. The method of claim 1 ,wherein the predefined specific index is related to an index in the frequency domain of a strongest coefficient among the coefficients. 3. The method of claim 2 ,wherein the predefined specific index is 0. 4. The method of claim 1 ,wherein the priority value increases in an ascending order of the index of the spatial domain. 5. The method of claim 1 ,wherein the smaller the priority value, the higher the priority of each element. 6. The method of claim 1 ,wherein a priority of i) the index of the spatial domain of a strongest coefficient and ii) an index of the spatial domain corresponding to a beam having an opposite polarization with respect to a beam corresponding to the strongest coefficient is the highest. 7. The method of claim 1 ,wherein a part of the CSI is omitted and transmitted through the PUSCH. 8. The method of claim 1 ,wherein the CSI includes a first part and a second part, and wherein a potion of the second part is omitted. 9. The method of claim 1 ,wherein the CSI further includes information related to a omission of the portion. 10. The method of claim 9 ,wherein the information related to the omission includes at least one of (i) information on whether to omit, (ii) information on an object to be omitted or (iii) information on a quantity to be omitted. 11. The method of claim 1 ,wherein the information related with coefficients includes at least one of information on a amplitude coefficient, ii) information on a phase coefficient, or iii) bitmap information related to the amplitude coefficient and the phase coefficient. 12. The method of claim 1 , further comprising:receiving configuration information related with the CSI, wherein a resource region for the CSI report is allocated based on the configuration information, and wherein a payload size of the obtained CSI exceeds the resource region. 13. A user equipment (UE) for transmitting and receiving data in a wireless communication system, the UE comprises: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 coupled to the one or more processors, wherein the operations comprises: receiving bandwidth part (BWP) configuration information related to a BWP; receiving information for activating a specific bandwidth part among one or more bandwidth parts based on the BWP configuration information; receiving a reference signal; obtaining CSI based on the reference signal; and transmitting the CSI by omitting a part of the CSI in the activated specific bandwidth part, based on a priority rule, wherein the CSI includes information related with coefficients, and each of elements of the information related to the coefficients is classified as a first group and a second group based on a priority value, wherein the priority value is determined based on i) a layer index ii) an index of a spatial domain related to each of the elements and iii) an index of a frequency domain related to each of the elements, wherein the priority value is determined as an order in which a higher index and a lower index of indexes of a frequency domain related to the elements are sequentially crossed based on a predefined specific index, and wherein a priority of the first group is defined as higher than a priority of the second group in the priority rule. 14. A method of receiving channel state information (CSI), by a base station, in a wireless communication system, the method comprising:transmitting, to a user equipment (UE), bandwidth part (BWP) configuration information related to a BWP; transmitting, to the UE, information for activating a specific bandwidth part among one or more bandwidth parts based on the BWP configuration information; transmitting, to the UE, a reference signal; and receiving, from the UE, a CSI report in which part of the CSI measured based on the reference signal are omitted based on the priority rule, wherein the CSI report is received based on the activated specific bandwidth part, wherein the CSI includes information related with coefficients, and each of elements of the information related to the coefficients is classified as a first group and a second group based on a priority value, wherein the priority value is determined based on i) a layer index ii) an index of a spatial domain related to each of the elements and iii) an index of a frequency domain related to each of the elements, wherein the priority value is determined as an order in which a higher index and a lower index of indexes of a frequency domain related to the elements are sequentially crossed based on a predefined specific index, and wherein a priority of the first group is defined as higher than a priority of the second group in the priority rule.
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