KR-102961776-B1 - Method for enabling/disabling panels for uplink MIMO transmission

Abstract

Systems, methods, and devices for enabling and/or disabling panels for uplink MIMO (Multi-In Multi-Out) transmission are disclosed. A device, such as a radio transceiver unit (WTRU), may have one or more antenna panels. Each panel may have an identifier (ID). Based on reported feedback containing measurement information, one or more panels may be enabled or disabled. In some embodiments, a gNB may determine whether to enable or disable a panel. In other embodiments, a WTRU may determine whether to enable or disable a panel.

Inventors

• 하그하이야트, 아프신
• 펠리티어, 지슬라인
• 하지르, 마우나
• 투허, 제이. 패트릭
• 크한 베이기, 나질리

Assignees

• 인터디지탈 패튼 홀딩스, 인크

Dates

Publication Date

20260507

Application Date

20200813

Priority Date

20190813

Claims (20)

1. A method performed by a wireless transmit/receive unit (WTRU), A step of receiving information related to the configuration of a channel state information reference signal (CSI-RS) for the first panels and the second panels; A step of measuring CSI-RS using one or more of the first panels; and In response to a triggering event, A step of transmitting to a base station a request to transmit CSI-RS associated with one or more of the second panels; A step of activating one or more of the second panels; A step of measuring CSI-RS associated with one or more of the second panels; and A method comprising the step of identifying a panel having a CSI-RS measurement greater than a threshold and reporting the identified panel to the base station.
2. A method according to claim 1, wherein the triggering event corresponds to a channel quality indicator (CQI) of one or more of the first panels measured below a threshold.
3. A method according to claim 1, wherein the triggering event corresponds to the RSRP (reference signal received power) of one or more of the first panels measured below a threshold.
4. A method according to claim 1, wherein the triggering event corresponds to the SINR (signal to interference plus noise ratio) of one or more of the first panels measured below a threshold.
5. In claim 1, the method wherein the first panels are activated panels.
6. A method according to claim 1, wherein the second panels are panels that are deactivated prior to the step of activating at least one of the second panels.
7. In claim 1, the method is for determining whether to activate or deactivate the panel.
8. A method according to claim 1, wherein the triggering event is the reception of downlink control information (DCI), and the base station is a next-generation node b (gNB).
9. A method according to claim 1, wherein the information related to the CSI-RS configuration comprises one or more of a CSI report configuration ( CSI-ReportConfig) , a CSI resource configuration ( CSI-ResourceConfig) , or a trigger status list.
10. A method according to claim 1, wherein at least some of the first panels and the second panels are associated with each other, and each of the first panels and the second panels is identified as panel identifiers (panel IDs) by the WTRU.
11. As a wireless transceiver unit (WTRU), A transceiver configured to receive information related to the configuration of a channel status information reference signal (CSI-RS) for first panels and second panels; A circuit section configured to measure CSI-RS using one or more of the first panels mentioned above; and In response to a trigger event, The transceiver configured to transmit to a base station a request to transmit CSI-RS associated with one or more of the second panels; A circuit unit configured to activate one or more of the second panels; A circuit section configured to measure CSI-RS associated with one or more of the second panels; A circuit section configured to identify panels having CSI-RS measurements greater than a threshold; and WTRU comprising the transceiver configured to transmit a report indicating the identified panel to the base station.
12. In paragraph 11, the trigger event is a WTRU corresponding to a Channel Quality Indicator (CQI) of one or more of the first panels measured below a threshold.
13. In paragraph 11, the trigger event is a WTRU corresponding to the RSRP of one or more of the first panels measured below a threshold.
14. In paragraph 11, the trigger event is a WTRU corresponding to the SINR of one or more of the first panels measured below a threshold.
15. In paragraph 11, the first panels are activated panels, WTRU.
16. In paragraph 11, the second panels are panels that were deactivated prior to at least one of the second panels being activated by the circuit part, WTRU.
17. In paragraph 11, the WTRU is configured to determine whether to enable or disable the panel.
18. In paragraph 11, the trigger event is the reception of downlink control information (DCI), and the base station is a WTRU that is a next-generation node b (gNB).
19. In paragraph 11, the information related to the above CSI-RS configuration is a WTRU that includes one or more of a CSI report configuration ( CSI-ReportConfig) , a CSI resource configuration ( CSI-ResourceConfig) , or a trigger status list.
20. In paragraph 11, at least some of the first panels and the second panels are associated with each other, and each of the first panels and the second panels is identified by the WTRU as panel identifiers (panel IDs).

Description

Method for enabling/disabling panels for uplink MIMO transmission Cross-reference regarding related applications This application claims the benefit of U.S. Provisional Application No. 62/886,182 filed August 13, 2019 and U.S. Provisional Application No. 62/932,269 filed November 7, 2019, the contents of which are incorporated herein by reference. In wireless communication systems, there may be devices having one or more antenna panels that can be used to communicate wirelessly with other wireless devices. As technology advances, the number of panels and the management of these panels need to be addressed. Systems, methods, and devices for enabling and/or disabling panels for uplink MIMO (Multi-In Multi-Out) transmission are disclosed. A device such as a wireless transmit/receive unit (WTRU) may have one or more antenna panels. Each panel may have an identifier (ID). Based on reported feedback containing measurement information, one or more panels may be enabled or disabled. In some embodiments, a gNodeB (gNB) may determine whether to enable or disable a panel. In other embodiments, a WTRU may determine whether to enable or disable a panel. In some embodiments, the WTRU may request panel selection, receive indications for measurements for each panel of a first set of panels, report feedback for each panel of the first set of panels, and receive indications for the selection of one or more panels. In other embodiments, the WTRU receives a signal to report to the gNB, transmits to the gNB the WTRU's panel configuration and indications for switching a hot panel—wherein the hot panel is the active panel used for transmission—and switches to a new hot panel based on the indications. In yet other embodiments, the WTRU receives a signal to report to the gNB, transmits to the gNB the WTRU's panel configuration and indications for panel modification—wherein the panel configuration is based on one or more factors—and modifies the panel configuration according to the indications. A more detailed understanding can be obtained from the following description, given as an example together with the attached drawings, where similar reference numbers in the drawings indicate similar elements. FIG. 1a is a system diagram illustrating an exemplary communication system in which one or more disclosed embodiments may be implemented. FIG. 1b is a system diagram illustrating an exemplary wireless transceiver unit (WTRU) that can be used within the communication system illustrated in FIG. 1a according to one embodiment. FIG. 1c is a system diagram illustrating an exemplary radio access network (RAN) and an exemplary core network (CN) that can be used within the communication system illustrated in FIG. 1a according to one embodiment. FIG. 1d is a system diagram illustrating additional exemplary RAN and additional exemplary CN that can be used within the communication system illustrated in FIG. 1a according to one embodiment. FIG. 2 is a drawing illustrating an exemplary WTRU multi-panel configuration according to one embodiment. FIG. 3a is a drawing illustrating an exemplary multi-panel WTRU in which all panels are activated, according to one embodiment. FIG. 3b is a drawing illustrating an exemplary multi-panel WTRU in which four panels are activated, according to one embodiment. FIG. 4 is a diagram illustrating an exemplary gNB-driven panel selection procedure according to one embodiment. FIG. 5 is a diagram illustrating a WTRU-driven panel activation/deactivation (PAD) operation according to one embodiment. FIG. 6 is a diagram illustrating an exemplary NR (New Radio) channel state information reference signal (CSI-RS) framework according to one embodiment. FIG. 7 is a drawing illustrating an exemplary CSI-RS framework for a PAD having a panel status list according to one embodiment. FIG. 8 is a drawing illustrating an exemplary CSI-RS framework for a PAD having enhanced reporting and resource settings according to one embodiment. FIG. 9 is a drawing illustrating an example of a CSI-RS framework for a PAD according to one embodiment. FIG. 10 is a drawing illustrating an exemplary 2D rectangular antenna array modeled by discrete Fourier transform (DFT) vectors according to one embodiment. FIGS. 11a, FIGS. 11b, FIGS. 11c and FIGS. 11d are a set of charts demonstrating a comparison of the performance of a codebook subset restriction (CBSR) according to one or more embodiments disclosed herein. FIG. 1a is a drawing illustrating an exemplary communication system (100) in which one or more disclosed embodiments may be implemented. The communication system (100) may be a multiple access system that provides content such as voice, data, video, messaging, broadcasting, etc. to multiple wireless users. The communication system (100) may enable multiple wireless users to access such content through the sharing of system resources, including wireless bandwidth. For example, the communication systems (100) may use one or more channel access met