METHOD AND USER EQUIPMENT FOR TRANSMITTING CHANNEL STATE INFORMATION

• US 20190312622A1
• Filed: 01/10/2018
• Published: 10/10/2019
• Est. Priority Date: 01/26/2017
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: FU, Jingxing, YU, Bin, QIAN, Chen, SU, Di, XIONG, Qi, ZHANG, Yingjie
• Granted Patent: US 11,489,574 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network

Abstract

The present disclosure may be related to a pre-5G or 5G communication system to be provided for supporting higher data rates Beyond 4G communication system such as LTE. The present invention provides a method for transmitting channel state information (CSI) report which comprises steps of: determining CSI transmission configuration information that comprises transmission times k of periodic CSI report in one subframe; and transmitting CSI report according to the CSI transmission configuration information. As compared to the prior art, the present invention may improve transmission efficiency of uplink control information (UCI) in a higher frequency spectrum resource environment of 5G technology and ensure transmission efficiency and transmission performance of UCI by introducing a smaller time unit for data scheduling and configuring a smaller CSI report period. Furthermore, the present invention provides a user equipment (UE) for transmitting channel state information.

Claims

1-13. -13. (canceled)

14. A method for transmitting a channel state information (CSI) report by a user equipment (UE), the method comprising:

receiving configuration information indicating a downlink space size of a subcarrier for a CSI reference resource;

measuring the CSI reference resource in a downlink time slot determined based on an uplink time slot for CSI reporting and a time offset relative to the downlink time slot, the time offset obtained from the downlink space size, in case that the CSI reporting is a periodic CSI reporting; and

transmitting the CSI report corresponding to a measure results of the CSI reference resource in the uplink time slot.

15. The method according to claim 14, wherein the time offset is the minimum value greater than or equal to a positive integer determined by the downlink space size.

16. The method according to claim 15, wherein the positive integer is determined based on the downlink space size and a number of CSI report processes.

17. The method according to claim 15, wherein the positive integer is a first value related to the downlink space size, in response that the UE is configured with a single CSI report process, and

the positive integer is a second value related to the downlink space size, the second value being different from the first value, in response that the UE is configured with multiple CSI report processes.

18. The method according to claim 14, wherein the downlink time slot is determined further considering to an uplink space size of a subcarrier for a physical uplink control channel (PUCCH) comprising the CSI report, the uplink space size being indicated by radio resource control (RRC) signaling.

20. The method according to claim 14, wherein the time offset is the minimum value greater than or equal to a positive integer determined by the downlink space size.

21. The method according to claim 20, wherein the positive integer is determined based on the downlink space size and a number of CSI report processes.

22. The method according to claim 20, wherein the positive integer is a first value related to the downlink space size, in response that the UE is configured with a single CSI report process, and

the positive integer is a second value related to the downlink space size, the second value being different from the first value, in response that the UE is configured with multiple CSI report processes.

19. A method for receiving a channel state information (CSI) report by a base station, the method comprising:

transmitting configuration information indicating a downlink space size of a subcarrier for a CSI reference resource; and

transmitting a reference signal on the CSI reference resource in a downlink time slot; and

receiving the CSI report corresponding to a measure results of the CSI reference resource in an uplink time slot corresponding to the downlink time slot,

wherein a time offset relative to the downlink time slot and the uplink time slot is obtained based on the downlink space size, in case that the CSI reporting is a periodic CSI reporting.

23. The method according to claim 19, wherein the downlink time slot is determined further considering to an uplink space size of a subcarrier for a physical uplink control channel (PUCCH) comprising the CSI report, the uplink space size being indicated by radio resource control (RRC) signaling.

24. An user equipment (UE) for transmitting a channel state information (CSI) report, the UE comprising:

a transceiver configured to receive configuration information indicating a downlink space size of a subcarrier for a CSI reference resource and transmit the CSI report corresponding to a measure results of the CSI reference resource in an uplink time slot; and

a processor configured to measure the CSI reference resource in a downlink time slot to generate the CSI report, the downlink time slot being determined based on the uplink time slot for CSI reporting and a time offset relative to the downlink time slot, the time offset obtained from the downlink space size, in case that the CSI reporting is a periodic CSI reporting.

25. The UE according to claim 24, wherein the time offset is the minimum value greater than or equal to a positive integer determined by the downlink space size.

26. The UE according to claim 25, wherein the positive integer is determined based on the downlink space size and a number of CSI report processes.

27. The UE according to claim 25, wherein the positive integer is a first value related to the downlink space size, in response that the UE is configured with a single CSI report process, and

the positive integer is a second value related to the downlink space size, the second value being different from the first value, in response that the UE is configured with multiple CSI report processes.

28. The UE according to claim 24, wherein the downlink time slot is determined further considering to an uplink space size of a subcarrier for a physical uplink control channel (PUCCH) comprising the CSI report, the uplink space size being indicated by radio resource control (RRC) signaling.

29. A base station for receiving a channel state information (CSI) report, the base station comprising:

a transceiver configured to transmit configuration information indicating a downlink space size of a subcarrier for a CSI reference resource, transmit a reference signal on the CSI reference resource in a downlink time slot, and receive the CSI report corresponding to a measure results of the CSI reference resource in an uplink time slot corresponding to the downlink time slot,

a processor configured to control the transceiver,

wherein a time offset relative to the downlink time slot and the uplink time slot is obtained based on the downlink space size, in case that the CSI reporting is a periodic CSI reporting.

30. The base station according to claim 29, wherein the time offset is the minimum value greater than or equal to a positive integer determined by the downlink space size.

31. The base station according to claim 30, wherein the positive integer is determined based on the downlink space size and a number of CSI report processes.

32. The base station according to claim 30, wherein the positive integer is a first value related to the downlink space size, in response that the UE is configured with a single CSI report process, and

the positive integer is a second value related to the downlink space size, the second value being different from the first value, in response that the UE is configured with multiple CSI report processes.

33. The method according to claim 29, wherein the downlink time slot is determined further considering to an uplink space size of a subcarrier for a physical uplink control channel (PUCCH) comprising the CSI report, the uplink space size being indicated by radio resource control (RRC) signaling.