Methods and apparatuses for channel state information configuration and reporting for multi-transmission reception point operation

Patent metadata

Field	Value
Publication number	US-2022337300-A1
Application number	US-202017753959-A
Country	US
Kind code	A1
Filing date	Sep 23, 2020
Priority date	Sep 24, 2019
Publication date	Oct 20, 2022
Grant date	—

Abstract

Systems, methods, apparatuses, and computer program products for channel state information (CSI) configuration and reporting for multi-transmission reception point (TRP) operation are provided. One method may include configuring a user equipment (UE), by a network node, to provide independent channel state information (CSI) feedback per transmission reception point (TRP) and to indicate additional information. The configuring of the UE may include configuring the UE with at least one of several reporting options for generating a combined channel state information (CSI) report.

First claim

1 - 54 . (canceled)

55 . An apparatus, comprising:
at least one processor; and at least one memory comprising computer program code, the at least one memory and computer program code configured, with the at least one processor, to cause the apparatus at least to: receive a configuration, from a network node, to provide independent channel state information, CSI, feedback per transmission reception point, TRP, wherein the configuration comprises a configuration for at least one of a plurality of reporting options for generating a combined CSI report.

56 . The apparatus according to claim 55 , wherein the configuration further comprises a configuration to the apparatus to provide additional information, wherein the additional information comprises at least one of a preferred combination of cooperating TRPs and transmission configuration indicator, TCI, states, or a combined channel quality indicator, CQI, or rank indicator, RI, combinations.

57 . The apparatus according to claim 55 , wherein the configuration comprises a configuration to the apparatus to indicate a predetermined number of preferred combinations of cooperating TRPs and TCI states and a combined CQI for each preferred combination to enable the network node to make a scheduling decision.

58 . The apparatus according to claim 55 , wherein the reporting options comprise a first reporting option in which one combined CSI report comprises at least one of: two best CSI-reference signal, RS, resource indicators, CRIs, rank combination bits mapped in the order of TCI states, one combined CQI, or a precoding matrix indicator, PMI.

59 . The apparatus according to claim 58 , wherein the reporting options comprise a second reporting option in which the combined CSI report comprises one CSI for single TRP and additional parameters comprise at least one difference-value parameter.

60 . The apparatus according to claim 59 , wherein the reporting options comprise a third reporting option in which the CSI report is dynamically selected between the first reporting option and the second reporting option according to at least one indicated TCI codepoint.

61 . The apparatus according to claim 60 , wherein:
when at least one codepoint includes a single TCI state, the second reporting option is dynamically selected; and when none of the codepoints include a single TCI state, the first reporting option is dynamically selected.

62 . The apparatus according to claim 55 , wherein the at least one memory and computer program code configured, with the at least one processor, to cause the apparatus at least to: transmit to the network node a CSI report generated by the apparatus according to one or more of the configured reporting options.

63 . An apparatus, comprising:
at least one processor; and at least one memory comprising computer program code, the at least one memory and computer program code configured, with the at least one processor, to cause the apparatus at least to: send a configuration to a user equipment, UE, to provide independent channel state information, CSI, feedback per transmission reception point, TRP, wherein the configuration comprises a configuration for at least one of a plurality of reporting options for generating a combined CSI report.

64 . The apparatus according to claim 63 , wherein the configuration further comprises a configuration to the UE to provide additional information, wherein the additional information comprises at least one of a preferred combination of cooperating TRPs and transmission configuration indicator, TCI, states, or a combined channel quality indicator, CQI, or rank indicator, RI, combinations.

65 . The apparatus according to claim 63 , wherein the configuration comprises a configuration to the UE to indicate a predetermined number of preferred combinations of cooperating TRPs and TCI states and a combined CQI for each preferred combination to enable the apparatus to make a scheduling decision.

66 . The apparatus according to claim 63 , wherein the reporting options comprise a first reporting option in which one combined CSI report comprises at least one of: two best CSI-reference signal, RS, resource indicators, CRIs, rank combination bits mapped in the order of TCI states, one combined CQI, or a precoding matrix indicator, PMI.

67 . The apparatus according to claim 66 , wherein the reporting options comprise a second reporting option in which the combined CSI report comprises one CSI for single TRP and additional parameters comprise at least one difference-value parameter.

68 . The apparatus according to claim 67 , wherein the reporting options comprise a third reporting option in which the CSI report is dynamically selected between the first reporting option and the second reporting option according to at least one indicated TCI codepoint.

69 . The apparatus according to claim 68 , wherein:
when at least one codepoint includes a single TCI state, the second reporting option is dynamically selected; and when none of the codepoints include a single TCI state, the first reporting option is dynamically selected.

70 . The apparatus according to claim 63 , wherein the at least one memory and computer program code configured, with the at least one processor, to cause the apparatus at least to:
receive from the UE a CSI report generated by the UE according to one or more of the configured reporting options.

71 . A method, comprising:
receiving, at a user equipment, UE, a configuration, from a network node, to provide independent channel state information, CSI, feedback per transmission reception point, TRP, wherein the configuration comprises a configuration for at least one of a plurality of reporting options for generating a combined CSI report.

72 . The method according to claim 71 , wherein the configuration further comprises a configuration to the UE to provide additional information, wherein the additional information comprises at least one of a preferred combination of cooperating TRPs and transmission configuration indicator, TCI, states, or a combined channel quality indicator, CQI, or rank indicator, RI, combinations.

73 . The method according to claim 71 , wherein the configuration comprises a configuration to the UE to indicate a predetermined number of preferred combinations of cooperating TRPs and TCI states and a combined CQI for each preferred combination to enable the network node to make a scheduling decision.

74 . The method according to claim 71 , further comprising:
transmitting to the network node a CSI report generated by the UE according to one or more of the configured reporting options.

Assignees

• Nokia Technologies Oy

Inventors

• Yuk Youngsoo
• Laddu Keeth Saliya Jayasinghe
• Mangalvedhe Nitin

Classifications

• H04W72/54

  based on quality criteria · CPC title

• H04B7/0626 Primary

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04L1/0026

  Transmission of channel quality indication · CPC title

• H04L1/0028

  Formatting · CPC title

• H04W24/10 Primary

  Scheduling measurement reports {; Arrangements for measurement reports} · CPC title