WO2021062861A1 - Procedure of ue channel state information (csi) report and channel state information reference signal (csi-rs) configuration update for csi - Google Patents

Procedure of ue channel state information (csi) report and channel state information reference signal (csi-rs) configuration update for csi Download PDF

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Publication number
WO2021062861A1
WO2021062861A1 PCT/CN2019/109797 CN2019109797W WO2021062861A1 WO 2021062861 A1 WO2021062861 A1 WO 2021062861A1 CN 2019109797 W CN2019109797 W CN 2019109797W WO 2021062861 A1 WO2021062861 A1 WO 2021062861A1
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WIPO (PCT)
Prior art keywords
csi
tci state
reporting
update
time point
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PCT/CN2019/109797
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French (fr)
Inventor
Hsuan-Li Lin
Zhixun Tang
Wenze Qu
Tsang-Wei Yu
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Mediatek Inc.
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Priority to PCT/CN2019/109797 priority Critical patent/WO2021062861A1/en
Priority to PCT/CN2020/119371 priority patent/WO2021063393A1/en
Publication of WO2021062861A1 publication Critical patent/WO2021062861A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the disclosed embodiments relate generally to wireless communication, and, more particularly, to UE channel state information (CSI) report and TCI switch.
  • CSI channel state information
  • TCI Transmission Configuration Indication
  • TCI state switch requirements for downlink control and data channel has been provided.
  • CSI Channel State Information
  • Improvements and enhancements are required for CSI-RS for CSI reporting for the NR network.
  • a method is provided.
  • the UE reports Channel State Information (CSI) to a new radio (NR) network, according to a timing of completion of CSI-RS configuration update for CSI, a timing of new TCI state switch for the CSI-RS for CSI is configured, and a timing of completing the active TCI state list update.
  • CSI Channel State Information
  • NR new radio
  • the reporting CSI comprises reporting CSI before time point Aaccording to an existing TCI state list until UE finished the TCI state switch (included in the CSI-RS configuration update) for the CSI and the active TCI state list update and reporting CSI after time point A according to the active TCI state list update after UE finished TCI state switch.
  • the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims.
  • the following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed, and this description is intended to include all such aspects and their equivalents.
  • Figure 1 illustrates an exemplary diagram for the scenario that CSI-RS configuration update for CSI is finished (point A) after completing the active TCI state list update (point B) .
  • Figure 2 illustrates an exemplary diagram for the scenario that CSI-RS configuration update for CSI is finished (point A) before completing the active TCI state list update (point B) .
  • Figure 3 illustrates an exemplary diagram for the scenario that CSI-RS configuration update for CSI (for the new TCI state switch for the CSI-RS for CSI) is configured (point A) after completing the active TCI state list update (point B) .
  • Figure 1 is for the scenario that CSI-RS configuration update, including the TCI update or CSI-RS resource ID update, for CSI is finished (time point A) after completing the active TCI state list update (time point B) .
  • the UE shall report the CSI with old TCI state list until UE finished the TCI state switch (included in the CSI-RS configuration update) for the CSI and active TCI state list update. (after time point A) the UE shall report CSI with the new TCI state list after UE finished TCI state switch for CSI reporting.
  • the CSI-RS configuration update includes at least an update on a TCI of a CSI-RS resource via RRC configuration or indicated by media access control (MAC-CE) or by downlink control information (DCI) , or an update on a CSI-RS resource ID used for CSI reporting.
  • MAC-CE media access control
  • DCI downlink control information
  • Figure 2 is for the scenario thatCSI-RS configuration update for CSI is finished (time point A) before completing the active TCI state list update (time point B) .
  • the UE shall report CSI with the new TCI state list after UE finished the CSI-RS configuration update for CSI (i.e. TCI state switch for the CSI-RS for CSI) and active TCI state list update.
  • the UE can report out-of-bound in the timeline after finished the TCI state switch the CSI-RS configuration update for CSI (i.e. TCI state switch for the CSI-RS for CSI) and before updating the active TCI state.
  • UE After finishing the TCI state switch for CSI, UE has the capability to report the CSI with new TCI state, but the active TCI state list for data reception is still not updated.
  • Figure 3 is for the scenario that CSI-RS configuration update for CSI (for the new TCI state switch for the CSI-RS for CSI) is configured (time point A) after completing the active TCI state list update (time point B) .
  • the UE shall report CSI with the new TCI state list after UE finished the TCI state switch for the CSI-RS for CSI and active TCI state list update.
  • the UE can report out-of-bound in the time duration after finished updating the active TCI state list and before finished the TCI state switch for CSI.
  • the UE work on the new TCI state to receive data transmission. However, the CSI reporting is still staying at the old TCI state. Thus, the CSI feedback can also be out-of-bound.
  • the UE can report the CSI with the new TCI state list.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Apparatus and methods are provided for CSI reporting. In one novel aspect, Channel State Information (CSI) reporting are performed based on timing of completion of Channel State Information Reference Signal (CSI-RS) configuration update for CSI, a timing of new TCI state switch for the CSI-RS for CSI is configured, and a timing of completing the active TCI state list update. In one embodiment, the CSI is reported (before time point A) according to the old TCI state list until UE finished the TCI state switch. In another embodiment, the CSI is reported as out-of-bound in the time durationafter finished the TCI state switch included in the CSI-RS configuration update for CSI and before updating the active TCI state list. In one embodiment, the CSI is reported as out-of-bound in the time durationbefore finished the TCI state switch included in the CSI-RS configuration update for CSI and after updating the active TCI state list.

Description

PROCEDURE OF UE CHANNEL STATE INFORMATION (CSI) REPORT AND CHANNEL STATE INFORMATION REFERENCE SIGNAL (CSI-RS) CONFIGURATION UPDATE FOR CSI TECHNICAL FIELD
The disclosed embodiments relate generally to wireless communication, and, more particularly, to UE channel state information (CSI) report and TCI switch.
BACKGROUND
In the NR network, with multi-beam technology, Transmission Configuration Indication (TCI) is provided to proceed UE reception.
TCI state switch requirements for downlink control and data channel has been provided. However, for CSI (Channel State Information) reporting as channel quality indicator, it can also switch its TCI state or the CSI-RS for CSI can also be reconfigured, but its UE behavior and requirements are not provided yet.
Improvements and enhancements are required for CSI-RS for CSI reporting for the NR network.
SUMMARY
The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither  identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
In an aspect of the disclosure, a method is provided. The UE reports Channel State Information (CSI) to a new radio (NR) network, according to a timing of completion of CSI-RS configuration update for CSI, a timing of new TCI state switch for the CSI-RS for CSI is configured, and a timing of completing the active TCI state list update.
In another respect, when the CSI-RS configuration update for CSI is finished at time point Aafter completing the active TCI state list update at time point B, the reporting CSI comprises reporting CSI before time point Aaccording to an existing TCI state list until UE finished the TCI state switch (included in the CSI-RS configuration update) for the CSI and the active TCI state list update and reporting CSI after time point A according to the active TCI state list update after UE finished TCI state switch.
To the accomplishment of the foregoing and related ends, the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative,  however, of but a few of the various ways in which the principles of various aspects may be employed, and this description is intended to include all such aspects and their equivalents.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, where like numerals indicate like components, illustrate embodiments of the invention.
Figure 1 illustrates an exemplary diagram for the scenario that CSI-RS configuration update for CSI is finished (point A) after completing the active TCI state list update (point B) .
Figure 2 illustrates an exemplary diagram for the scenario that CSI-RS configuration update for CSI is finished (point A) before completing the active TCI state list update (point B) .
Figure 3 illustrates an exemplary diagram for the scenario that CSI-RS configuration update for CSI (for the new TCI state switch for the CSI-RS for CSI) is configured (point A) after completing the active TCI state list update (point B) .
DETAILED DESCRIPTION
Reference will now be made in detail to some embodiments of the invention, examples of which are illustrated in the accompanying drawings.
Figure 1 is for the scenario that CSI-RS configuration update, including the TCI update or CSI-RS resource ID update, for CSI is finished (time point A) after completing the active TCI state list update (time point B) . The UE shall report the CSI with old TCI state list until UE finished the TCI state switch (included in the CSI-RS configuration update) for the CSI and active TCI state list update. (after time point A) the UE shall report CSI with the new TCI state list after UE finished TCI state switch for CSI reporting. The CSI-RS configuration update includes at least an update on a TCI of a CSI-RS resource via RRC configuration or indicated by media access control (MAC-CE) or by downlink control information (DCI) , or an update on a CSI-RS resource ID used for CSI reporting.
Figure 2 is for the scenario thatCSI-RS configuration update for CSI is finished (time point A) before completing the active TCI state list update (time point B) . (after point B) the UE shall report CSI with the new TCI state list after UE finished the CSI-RS configuration update for CSI (i.e. TCI state switch for the CSI-RS for CSI) and active TCI state list update. (after time point A andbefore time point B) The UE can report out-of-bound in the timeline after finished the TCI state switch the CSI-RS configuration update for CSI (i.e. TCI state switch for the CSI-RS for CSI) and before updating the active TCI state. After finishing the TCI state switch for CSI, UE has the capability to report the CSI with new  TCI state, but the active TCI state list for data reception is still not updated.
Figure 3 is for the scenario that CSI-RS configuration update for CSI (for the new TCI state switch for the CSI-RS for CSI) is configured (time point A) after completing the active TCI state list update (time point B) . (after timepoint A) the UE shall report CSI with the new TCI state list after UE finished the TCI state switch for the CSI-RS for CSI and active TCI state list update. (after time point B andbefore timepoint A) The UE can report out-of-bound in the time duration after finished updating the active TCI state list and before finished the TCI state switch for CSI. After finishing the TCI state list update, the UE work on the new TCI state to receive data transmission. However, the CSI reporting is still staying at the old TCI state. Thus, the CSI feedback can also be out-of-bound. Once finishing the TCI state switch for CSI reporting, the UE can report the CSI with the new TCI state list.

Claims (6)

  1. A method comprising:
    reporting CSI by a user equipment (UE) in a new radio (NR) network, according to a timing of completion of channel state information reference signal (CSI-RS) configuration update for channel state information (CSI) , a timing of a Transmission Configuration Indication (TCI) state switch for the CSI-RS for CSI is configured, and a timing of completing an active TCI state update.
  2. The method of claim 1, wherein when the CSI-RS configuration update for CSI is finished at time point Aafter completing the active TCI state list update at time point B, the reporting CSI comprises:
    reporting CSI before time point Aaccording to an existing TCI state list until UE finished the TCI state switch (included in the CSI-RS configuration update) for the CSI and the active TCI state list update; and
    reporting CSI after time point A according to the active TCI state list update after UE finished TCI state switch.
  3. The method of claim 1, wherein the reporting CSI comprises:
    reporting CSI before time point Baccording to the new TCI state list after UE finished the CSI-RS configuration update for CSI and an active TCI state list update; and
    reporting CSIafter time point A andbefore time point Bas out-of-bound in the time durationafter finished the CSI-RS configuration update for CSI and before updating the active TCI state list, when the CSI-RS configuration update for CSI is finished at time point A and before completing the active TCI state list update at time point B.
  4. The method of claim 3, wherein the CSI-RS configuration update for CSI comprises at least an update on TCI of a CSI-RS resource via RRC configuration or indicated by media access control (MAC-CE) or downlink control information (DCI) , or an update on a CSI-RS resource ID used for CSI reporting.
  5. The method of claim 1, wherein the reporting CSI comprises:
    reporting CSI after time point Aaccording to the new TCI state list after UE finished the TCI state switch for the CSI-RS for CSI and the active TCI state list update; and
    reporting CSI after time point B andbefore time point Aas out-of-bound in the time durationafter finished updating the active TCI state list and before finished the TCI state switch for CSI, when the new TCI state switch for the CSI-RS for CSI is configured at time point Aafter completing the active TCI state list update at time point B.
  6. The method of claim 1, wherein the CSI reporting is CQI reporting, RI (rand indication) reporting, or PMI (precoding matrix indication) reporting.
PCT/CN2019/109797 2019-10-02 2019-10-02 Procedure of ue channel state information (csi) report and channel state information reference signal (csi-rs) configuration update for csi WO2021062861A1 (en)

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PCT/CN2020/119371 WO2021063393A1 (en) 2019-10-02 2020-09-30 Transmission configuration indication (tci) list update and tci switch for channel state information (csi) reporting

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US10707923B2 (en) * 2017-10-13 2020-07-07 Qualcomm Incorporated Dynamic transmission configuration indication state updating
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WO2019097478A1 (en) * 2017-11-16 2019-05-23 Telefonaktiebolaget Lm Ericsson (Publ) Configuring spatial qcl reference in a tci state
WO2019120520A1 (en) * 2017-12-20 2019-06-27 Telefonaktiebolaget Lm Ericsson (Publ) Technique for reporting channel state information
CN109302272A (en) * 2018-02-13 2019-02-01 中兴通讯股份有限公司 Sending, receiving method and device, the electronic device of CSI report

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