Methods, devices, and computer program products for wireless communication

Abstract

A method, an apparatus, and a computer program product for wireless communication are disclosed. The method includes receiving, by a wireless communication terminal from a wireless communication node, control signaling comprising one or more channel state information reference signal (CSI-RS) configuration information associated with one or more group identifiers (IDs) or one or more channel state information (CSI) measurement reporting configurations associated with one or more group IDs, receiving, by the wireless communication terminal from the wireless communication node, first signaling comprising a CSI-RS configuration indication, and performing, by the wireless communication terminal, at least one of a CSI-RS measurement or a transmission of a channel state information (CSI) measurement report to the wireless communication node based on at least one of the control signaling, the CSI-RS configuration indication, or predefined information.

Description

[0001] This application is international application number PCT / CN2022 / 111909, international application date August 11, 2022, filed on [date missing]. It entered the Chinese national phase on February 10, 2025, with Chinese national application number 202280098971.7, and the invention title is "Using..." This is a divisional application of the invention patent application for "methods, apparatus and computer program products for wireless communication". Technical Field

[0002] This document generally deals with wireless communication, and specifically with fifth-generation (5G) or sixth-generation (6G) wireless communication. Background Technology

[0003] With the development of wireless communication technology, the transmission rate, throughput, reliability, and other performance indicators of wireless communication systems have been greatly improved through the use of high-frequency bands, large bandwidths, multiple antennas, and other technologies. At the same time, greenhouse gas emissions and high power consumption caused by base stations have become a problem for 5G deployment. Therefore, network energy saving is not only important for green communication systems but also for reducing operating costs. Summary of the Invention

[0004] This document relates to methods, systems, and equipment used for CSI measurement and reporting.

[0005] One aspect of the present invention relates to a wireless communication method. In one embodiment, the wireless communication method includes: receiving control signaling from a wireless communication node by a wireless communication terminal, the control signaling including one or more Channel State Information Reference Signal (CSI-RS) configuration information associated with one or more group identifiers (IDs), or one or more Channel State Information (CSI) measurement report configurations associated with one or more group IDs; receiving first signaling including a CSI-RS configuration indication from the wireless communication node by the wireless communication terminal; and performing at least one of the following based on at least one of the control signaling, the CSI-RS configuration indication, or predefined information: performing a CSI-RS measurement or transmitting a Channel State Information (CSI) measurement report to the wireless communication node.

[0006] Another aspect of this disclosure relates to a wireless communication method. In one embodiment, the wireless communication method includes: a wireless communication node sending control signaling to a wireless communication terminal, the control signaling including one or more Channel State Information Reference Signal (CSI-RS) configuration information associated with one or more group identifiers (IDs), or one or more Channel State Information (CSI) measurement report configurations associated with one or more group IDs; the wireless communication node sending a first signaling including a CSI-RS configuration indication to the wireless communication terminal; and the wireless communication node receiving a Channel State Information (CSI) measurement report from the wireless communication terminal based on at least one of the control signaling, the CSI-RS configuration indication, or predefined information.

[0007] Another aspect of this disclosure relates to a wireless communication terminal. In one embodiment, the wireless communication terminal includes a communication unit and a processor. The processor is configured to: receive control signaling from a wireless communication node, the control signaling including one or more Channel State Information Reference Signal (CSI-RS) configuration information associated with one or more group identifiers IDs, or one or more Channel State Information (CSI) measurement report configurations associated with one or more group IDs; receive first signaling from the wireless communication node including a CSI-RS configuration indication; and perform at least one of the following based on the control signaling, the CSI-RS configuration indication, or predefined information: performing CSI-RS measurement, or transmitting at least one of the following to the Channel State Information (CSI) measurement report of the wireless communication node.

[0008] Another aspect of this disclosure relates to a wireless communication node. In one embodiment, the wireless communication node includes a communication unit and a processor. The processor is configured to: send control signaling to a wireless communication terminal, the control signaling including one or more Channel State Information Reference Signal (CSI-RS) configuration information associated with one or more group identifier IDs, or one or more Channel State Information (CSI) measurement report configurations associated with one or more group IDs; send a first signaling including a CSI-RS configuration indication to the wireless communication terminal; and receive a Channel State Information (CSI) measurement report from the wireless communication terminal to the wireless communication node based on at least one of the control signaling, the CSI-RS configuration indication, or predefined information.

[0009] Various embodiments can preferably achieve the following features:

[0010] Preferably, the control signaling includes at least one of Radio Resource Control (RRC) signaling or Media Access Control Unit (MAC CE) signaling.

[0011] Preferably, one or more group IDs are associated with at least one of the following: CSI-RS configuration information, CSI measurement report configuration, CSI resource configuration, CSI measurement configuration, CSI-RS resource set, CSI-RS resource, or CSI-RS resource mapping.

[0012] Preferably, one or more group IDs are associated with at least one of the following: periodic CSI-RS configuration information, non-periodic CSI-RS configuration information, or semi-persistent CSI-RS configuration information.

[0013] Preferably, one or more group IDs are associated with at least one of the following:

[0014] Periodic CSI measurement reports, non-periodic CSI measurement reports, or semi-continuous CSI measurement reports;

[0015] Reported volume of at least one of the following: None, cri-RI-PMI-CQI, cri-RI-i1, cri-RI-i1-CQI, pdsch-BundleSizeForCSI, cri-Ri-CSI, cri-RSRP, ssb-Index-RSRP, or cri-RI-LI-PMI-CQI; or

[0016] CSI measurement report configuration for at least one of the following: channel measurement, interference measurement, rate matching, or intra-cell interference measurement.

[0017] Preferably, the group IDs of one or more group IDs associated with a CSI-RS resource in a CSI-RS resource set are the same.

[0018] Preferably, the group IDs in one or more group IDs associated with the CSI-RS configuration are the same, and the CSI-RS configuration is associated with the same CSI measurement reporting configuration.

[0019] Preferably, there is a hierarchical relationship between the CSI-RS configurations associated with different group IDs in one or more group IDs.

[0020] Preferably, at least one of the first time-domain and frequency-domain resources, the first CDM group, the first density, or the first CDM group index for the first CSI-RS configuration corresponding to the first group ID in one or more group IDs is a subset of at least one of the following: the second time-domain and frequency-domain resources, the second CDM group, the second density, or the second CDM group index for the second CSI-RS configuration corresponding to the second group ID in one or more group IDs.

[0021] Preferably, the first CSI-RS configuration corresponding to the first group of IDs is associated with the first number of ports, the second CSI-RS configuration corresponding to the second group of IDs is associated with the second number of ports, and the first number of ports is less than the second number of ports.

[0022] Preferably, the time-domain and frequency-domain resources for CSI-RS configuration corresponding to the root group ID are the union of the time-domain and frequency-domain resources for CSI-RS configuration information corresponding to each group, and the root group ID is associated with the maximum number of ports in the CSI-RS configuration information.

[0023] Preferably, the power control offset for a first CSI-RS configuration corresponding to a first group ID in one or more group IDs is smaller than the power control offset for a second CSI-RS configuration corresponding to a second group ID in one or more group IDs.

[0024] Preferably, the first signaling indicates a CSI-RS configuration indication, which includes at least one of the following: group ID indication, group activation or deactivation indication, base station status indication, antenna number indication, non-periodic CSI-RS resource activation indication, non-periodic CSI measurement report activation indication, or semi-persistent CSI-RS resource activation indication.

[0025] Preferably, the first signaling includes at least one of the following: Public Downlink Control Information (DCI), Private DCI, Broadcast DCI, Multicast DCI, MAC CE, or System Information Block (SIB).

[0026] Preferably, the first signaling includes an indication field for one or more user equipment (UEs).

[0027] Preferably, the indicator field indicates the activation or deactivation of one or more group IDs, or one or more group IDs.

[0028] Preferably, the indication field includes a bitmap or code points, and at least one of the bit width or position of the indication field is determined based on at least one of higher-layer signaling or a predetermined value. Preferably, the predetermined value is the same as a predefined value.

[0029] Preferably, the CSI-RS configuration indication in public DCI, dedicated DCI, broadcast DCI, or multicast DCI is used for at least one of the following: semi-persistent CSI-RS resources or non-periodic CSI-RS resources.

[0030] Preferably, the dedicated DCI or MAC CE includes a field indicating the triggering or activation of a CSI measurement report or CSI-RS configuration associated with one of one or more group IDs, and other CSI measurement report configurations or other CSI-RS configurations associated with one of one or more group IDs are implicitly indicated or activated by the field.

[0031] Preferably, the MAC CE includes at least one of the following: a CSI-RS configuration indication, one or more active or deactivated fields indicating one or more group IDs, a serving cell ID, a bandwidth portion BWPID, or one or more indicated group IDs.

[0032] Preferably, the predefined information includes at least one of the following: one or more timers, predefined patterns, or base station status.

[0033] Preferably, one of the one or more timers corresponding to one of the group IDs in the one or more group IDs is started in response to the corresponding group being activated.

[0034] Preferably, the group is activated in response to the timer expiring.

[0035] Preferably, the predefined pattern includes at least one of the following: a periodic pattern, a time-division duplex (TDD) pattern, or a configured pattern.

[0036] Preferably, the wireless communication terminal performs at least one of the following operations:

[0037] After a period of time relative to the reception of the first signaling, apply, activate, or take effect the CSI-RS configuration information;

[0038] After a first time period relative to the reception of the first signaling, CSI-RS measurements are performed based on CSI-RS configuration information;

[0039] After a second time period following the reception of the first signaling, the transmission of the CSI measurement report is performed based on the CSI-RS configuration information;

[0040] The activated group is changed according to predefined information, wherein the corresponding group is applied, taken effect, or activated after a third time period relative to the change of the activated group;

[0041] After the fourth time period relative to the change in the active group, CSI-RS measurements are performed based on the CSI-RS configuration information in the corresponding group; or

[0042] After the fifth time period, for the CSI-RS configuration information or CSI measurement report configuration in the corresponding group, the CSI measurement report is transmitted.

[0043] Preferably, at least one of the time period, the first time period, the second time period, the third time period, the fourth time period, or the fifth time period is associated with at least one of the following: a predefined value, time-domain behavior, UE capability, system frame number SFN, subcarrier spacing SCS, acknowledgment ACK, physical uplink shared channel PUSCH processing time, CSI calculation time, frequency range FR type, bandwidth portion BWP handover delay, higher-layer signaling, or physical downlink shared channel PDSCH processing time.

[0044] Preferably, at least one of the time period, the first time period, the second time period, the third time period, the fourth time period, or the fifth time period is predetermined or associated with the time-domain behavior of CSI-RS resources or the time-domain behavior of CSI measurement reports.

[0045] Preferably, during at least one of the time periods, the first time period, the second time period, the third time period, the fourth time period, or the fifth time period, the wireless communication terminal does not perform CSI-RS measurements for CSI-RS configurations that have not been applied, enabled, or activated after the time period, after the first time period, after the fourth time period, or after the third time period.

[0046] Preferably, the wireless communication terminal does not send CSI measurement reports during at least one of the time periods, the first time period, the second time period, the third time period, the fourth time period, or the fifth time period.

[0047] Preferably, when the CSI-RS configuration indication indicates that the wireless communication terminal is not configured with a group ID, the wireless communication terminal ignores the CSI-RS configuration indication, or performs the measurement based on the baseline group, or performs the transmission of the CSI measurement report based on the baseline group.

[0048] Preferably, the baseline group is a predetermined group, or a group associated with the maximum number of ports, or a root group.

[0049] Preferably, the CSI-RS configuration indication is invalid for CSI resource configurations, CSI-RS resource sets, CSI-RS configuration information, or CSI-RS resources that are not associated with one or more group IDs.

[0050] Preferably, the CSI-RS configuration indication is valid when the CSI-RS configuration information in the group activated by the CSI-RS configuration indication is used for at least one of channel measurement, interference measurement, rate matching, or intra-cell interference measurement.

[0051] Preferably, the CSI-RS configuration indication is valid when the time-domain behavior of the CSI-RS configuration information or CSI measurement report configuration in the group activated by the CSI-RS configuration indication is at least one of aperiodic, semi-persistent, or periodic.

[0052] Preferably, one of the corresponding configurations in the CSI measurement report configuration and the CSI-RS configuration information is activated accordingly.

[0053] Preferably, the wireless communication terminal sends at least one of the following to the wireless communication node: whether the wireless communication terminal supports group ID indication, whether the wireless communication terminal supports CSI-RS configuration indication via DCI, whether the wireless communication terminal supports CSI-RS configuration information or CSI report configuration group change based on predefined information, whether the wireless communication terminal supports CSI-RS configuration indication via MAC CE, whether the wireless communication terminal supports CSI-RS configuration indication, whether the wireless communication terminal supports configuration with one or more group IDs, the number of supported one or more group IDs, the maximum number of supported groups, or the number of port number types that can be reported at the same time or in the same time slot.

[0054] Preferably, the wireless communication terminal sends at least one of the following to the wireless communication node: preferred group, number of preferred groups, maximum number of preferred groups, preference for fallback to baseline group or root group, number of preferred ports, list of preferred ports, maximum number of preferred ports, and preference for fallback to baseline CSI-RS configuration.

[0055] Preferably, the first signaling or group change is enabled when at least one of the following events occurs:

[0056] Radio Resource Control (RRC) signaling is configured to enable the first signaling;

[0057] Group ID is configured;

[0058] RRC signaling is configured to enable changes to the activated group based on predefined information;

[0059] Predefined information is configured; or

[0060] The RRC signaling that enables the group instruction is enabled.

[0061] Preferably, enabling the first signaling includes at least one of the following: the wireless communication node is able to send the first signaling to the wireless communication terminal; the wireless communication terminal monitors the first signaling; or the first signaling contains an indication field indicating the activation or deactivation of one or more group IDs.

[0062] Preferably, the wireless communication node receives at least one of the following from the wireless communication terminal: whether the wireless communication terminal supports group ID indication, whether the wireless communication terminal supports CSI-RS configuration indication via DCI, whether the wireless communication terminal supports CSI-RS configuration information or CSI report configuration group change based on predefined information, whether the wireless communication terminal supports CSI-RS configuration indication via MAC CE, whether the wireless communication terminal supports CSI-RS configuration indication, whether the wireless communication terminal supports configuration with one or more group IDs, the number of supported one or more group IDs, the maximum number of supported groups, or the number of port number types that can be reported at the same time or in the same time slot.

[0063] Preferably, the wireless communication node receives at least one of the following from the wireless communication terminal: preferred group, number of preferred groups, maximum number of preferred groups, preference for fallback to baseline group or root group, number of preferred ports, list of preferred ports, maximum number of preferred ports, and preference for fallback to baseline CSI-RS configuration.

[0064] This disclosure relates to a computer program product including computer-readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement the wireless communication method described in any of the foregoing methods.

[0065] The exemplary embodiments disclosed herein are intended to provide features that will become clear when taken in conjunction with the accompanying drawings and reference to the following description. Exemplary systems, methods, apparatuses, and computer program products are disclosed herein according to various embodiments. However, it should be understood that these embodiments are presented by way of example and not limitation, and it will be apparent to those skilled in the art who read this disclosure that various modifications can be made to the disclosed embodiments while remaining within the scope of this disclosure.

[0066] Therefore, this disclosure is not limited to the exemplary embodiments and applications described and illustrated herein. Furthermore, the specific order and / or hierarchy of steps in the methods disclosed herein are merely exemplary methods. Based on design preferences, the specific order or hierarchy of steps in the disclosed methods or processes may be rearranged while remaining within the scope of this disclosure. Therefore, those skilled in the art will understand that the methods and techniques disclosed herein present various steps or actions in an exemplary order, and unless otherwise expressly stated, this disclosure is not limited to the specific order or hierarchy presented. Attached Figure Description

[0067] The above and other aspects and their implementations are described in more detail in the accompanying drawings, description and claims.

[0068] Figure 1 A schematic diagram of CSI resource configuration based on an example is shown.

[0069] Figure 2 An RRC signaling including a group index is shown according to an embodiment.

[0070] Figure 3 An RRC signaling including a group index is shown according to an embodiment.

[0071] Figure 4 A schematic diagram of configuration information according to an embodiment is shown.

[0072] Figure 5 A schematic diagram of configuration information according to an embodiment is shown.

[0073] Figure 6 A schematic diagram of configuration information according to an embodiment is shown.

[0074] Figure 7A A table showing CSI-RS configuration instructions for a serving cell according to an embodiment is illustrated.

[0075] Figure 7B A table showing the serving cell and group ID / index activation / deactivation instructions according to an embodiment is provided.

[0076] Figure 8 An example of a schematic diagram of a wireless terminal according to an embodiment of the present disclosure is shown.

[0077] Figure 9 An example of a schematic diagram of a wireless network node according to an embodiment of the present disclosure is shown. Detailed Implementation

[0078] Figure 1 A schematic diagram of CSI resource configuration based on an example is shown.

[0079] In CSI (Channel State Information) measurements, the UE (User Equipment) should perform the measurements based on the CSI-RS (Reference Signal) and can report the corresponding data to the gNB.

[0080] CSI-RS: CSI-RS can be used for time / frequency tracking, CSI calculation, L1 (Layer 1)-RSRP (Reference Signal Received Power) calculation, L1-SINR (Signal-to-Interference-plus-Noise Ratio) calculation, mobility, and tracking during fast SCell (Secondary Cell) activation.

[0081] CSI: The time and frequency resources that the UE can use to report CSI are controlled by the gNB. CSI may include Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), CSI-RS Resource Indicator (CRI), SS / PBCH Block Resource Indicator (SSBRI), Layer Indicator (LI), Rank Indicator (RI), L1-RSRP, L1-SINR, or Capability [Set] Index.

[0082] CSI-RS Resources: Each CSI Resource Setting (CSI-ResourceConfig) contains a configuration of a list of S ≥ 1 CSI Resource Sets (given by the higher-layer parameter CSI-RS-ResourceSetList), where the list includes references to one or both of the NZP (Non-Zero Power) CSI-RS resource sets and the SS / PBCH block sets, or the list includes references to the CSI-IM (Interference Measurement) resource sets. Each CSI Resource Setting resides in a DL (Downlink) BWP (Bandwidth Portion) identified by the higher-layer parameter BWP-id, and CSI Resource Settings linked to a CSI Report Setting have the same DL BWP. The temporal behavior of the CSI-RS resources within a CSI Resource Setting is indicated by the higher-layer parameter resourceType and can be set to aperiodic, periodic, or semi-persistent.

[0083] CSI Reporting: Each reporting setting (CSI-ReportConfig) is associated with a single downlink BWP (indicated by the higher-layer parameter BWP-Id) for channel measurements, as given in the associated CSI resource configuration (CSI-ResourceConfig). The time-domain behavior of the CSI-ReportConfig is indicated by the higher-layer parameter reportConfigType and can be set to 'aperiodic', 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH', or 'periodic'. For 'periodic' and 'semiPersistentOnPUCCH' / 'semiPersistentOnPUSCH' CSI reporting, the configured periodicity and slot offset use the parameter set (numerology) of the UL BWP on which the CSI report is configured to be sent. The higher-layer parameter reportQuantity indicates the quantity of CSI-related, L1-RSRP-related, L1-SINR-related, or capability [set] index-related data to be reported.

[0084] For non-periodic CSI-RS reporting, the RRC configures a CSI-AperiodicTriggerStateList, which includes an associatedReportConfigInfoList. This associatedReportConfigInfoList indicates multiple CSI reporting configurations (also known as CSI measurement reporting configurations). The DCI can trigger an entry in the CSI-AperiodicTriggerStageList. The UE can then measure and report CSI based on the triggered entry.

[0085] For semi-persistent reporting on the PUSCH, a set of trigger states is configured by the higher-layer signal CSI-SemiPersistentOnPUSCH-TriggerStateList, where one of the trigger states is activated by the CSI request field in the DCI scrambled with SP-CSI-RNTI. The UE does not expect to receive a DCI scrambled with SP-CSI-RNTI that activates a semi-persistent CSI report having the same CSI-ReportConfigId as a previously received semi-persistent CSI report activated by a DCI scrambled with SP-CSI-RNTI. Semi-persistent CSI measurement reports can include semi-persistent CSI measurement reports on the PUSCH or on the PUCCH.

[0086] For semi-persistent reporting on PUCCH, the PUCCH resource used to send CSI reports is configured by reportConfigType. Semi-persistent reporting on PUCCH is activated by the MAC CE activation command.

[0087] The number of ports in CSI-RS is configured in the CSI-ResourceMapping, which is associated with NZP-CSI-RS-Resource. nrofPorts can be one of the following: p1, p2, p4, p8, p12, p16, p24, p32, where p1 indicates one port, p2 indicates two ports, p8 indicates eight ports, and so on.

[0088] If the number of base station antennas changes, the number of CSI-RS ports may also need to change. For example, a base station with four antennas can support four-port CSI-RS, but if the number of antennas is reduced to two, the base station cannot support four-port CSI-RS. Therefore, it is necessary to support UEs performing CSI-RS measurements using different numbers of ports. Furthermore, the number of CSI-RS ports used can vary depending on the number of base station antennas. In the prior art, most CSI-RS resource settings are configured via RRC (Radio Resource Control) signaling and are UE-specific. If the gNB wants to change the number of CSI-RS ports used for UEs in the cell, the RRC signaling overhead can be high. Therefore, a new CSI-RS setting indication method should be considered.

[0089] In some embodiments, the number of antennas or antenna ports can be changed or reduced to reduce the power consumption of the gNB. In some embodiments, CSI measurements or CSI reporting can also be changed with the number of antennas or antenna ports.

[0090] In some embodiments, the UE may perform one or more of the following operations, but is not limited thereto.

[0091] Receive RRC signaling, which includes at least CSI-RS configuration information. The CSI-RS configuration includes group ID / index.

[0092] Receive the first signaling, which includes a CSI-RS configuration indication.

[0093] Perform measurements and CSI reports based on RRC signaling, and / or first signaling, and / or predefined information.

[0094] Example 1: RRC signaling includes a group index.

[0095] Figure 2 An RRC signaling including a group index is shown according to an embodiment.

[0096] In this example, the CSI-RS configuration information is a CSI-RS resource set. The UE is configured with CSI-RS resource sets associated with zero, one, or more group indices. The first signaling is the DCI. The X-bit field in the DCI is used to indicate the group index. The bit width X of this field is determined based on the number of groups configured. Each code point indicates one group index. For example, bit '00' indicates that group 0 is active and other groups are deactivated, bit '01' indicates that group 1 is active and other groups are deactivated, bit '10' indicates that group 2 is active and other groups are deactivated, and so on. If the UE receives the DCI, the CSI-RS resource set associated with the indicated group index is valid / active, and the CSI-RS resource sets associated with other group indices are invalid / deactivated.

[0097] Example 2: RRC signaling includes a group index.

[0098] Figure 3 An RRC signaling including a group index is shown according to an embodiment.

[0099] In this example, the CSI-RS configuration information is a CSI-RS resource set. The UE is configured with CSI-RS resource sets associated with zero, one, or more group indices. The first signaling is the DCI. The X-bit field in the DCI is used to indicate group activation / deactivation. The bit width of the field is the same as the number of configured groups. Each bit indicates group activation / deactivation. A bit value of '0' indicates deactivation of the corresponding group, and a bit value of '1' indicates activation of the corresponding group. If the UE receives the DCI, the CSI-RS resource set associated with the activated group is valid / activated, while the CSI-RS resource set associated with the deactivated group is invalid / deactivated. The UE performs measurements and CSI reporting based on the valid / activated CSI-RS resource sets.

[0100] The following describes what it means for CSI-RS configuration to be valid / activated in some embodiments, but is not limited thereto.

[0101] In some embodiments, a valid / activated CSI-RS configuration indicates that the UE performs measurements according to a valid / activated CSI-RS configuration.

[0102] In some embodiments, an invalid / deactivated CSI-RS configuration means that the UE does not perform measurements based on an invalid / deactivated CSI-RS configuration.

[0103] In some embodiments, not sending a CSI measurement report means not sending a CSI report on the PUCCH or PUSCH configured for CSI reporting. In some embodiments, not sending a CSI measurement report means not sending a CSI report generated according to the CSI reporting configuration.

[0104] In some embodiments, for a periodic CSI-RS configuration, a valid / activated CSI-RS configuration indicates at least one of the following:

[0105] - The UE can measure valid / activated periodic CSI-RS configurations;

[0106] - Ignore the instruction; and / or

[0107] - If the periodic CSI-RS resource is not activated, then the periodic CSI-RS configuration is activated. In other words, the UE can perform measurements on the periodic CSI-RS configuration regardless of whether it was previously activated.

[0108] In some embodiments, for a periodic CSI-RS configuration, an invalid / deactivated CSI-RS configuration indicates at least one of the following:

[0109] - The UE stops measuring invalid / deactivated periodic CSI-RS configurations;

[0110] - Ignore the instruction; and / or

[0111] -Release / deactivate periodic CSI-RS configuration.

[0112] In some embodiments, for a semi-persistent CSI-RS configuration, a valid / activated CSI-RS configuration indicates at least one of the following:

[0113] - If a semi-persistent CSI-RS configuration has been activated by MAC CE or DCI, the UE can measure the valid / activated semi-persistent CSI-RS configuration. In the prior art, semi-persistent CSI-RS resources can be activated by MAC CE. In this embodiment, the valid / activated (or invalid / deactivated) indication carried by the first signaling is used for semi-persistent CSI-RS resources that have been activated by prior art methods.

[0114] - Ignore the instruction; and / or

[0115] - The UE can measure semi-persistent CSI-RS configurations regardless of whether the semi-persistent CSI-RS configuration has been activated by MACCE. In other words, invalid / deactivated semi-persistent CSI-RS resources can be valid / activated. In this embodiment, the valid / activated (or invalid / deactivated) indication carried by the first signaling is used for all semi-persistent CSI-RS resources or CSI reports, regardless of whether they have been activated by existing technology methods.

[0116] In some embodiments, for a semi-persistent CSI-RS configuration, an invalid / deactivated CSI-RS configuration indicates at least one of the following:

[0117] - UE is not measured on the semi-persistent CSI-RS configuration;

[0118] - Ignore the instruction; and / or

[0119] -Release / deactivate the semi-persistent CSI-RS configuration.

[0120] In some embodiments, for a non-periodic CSI-RS configuration, a valid / activated CSI-RS configuration indicates at least one of the following:

[0121] - An aperiodic CSI-RS configuration can be triggered / activated by another DCI. In other words, a valid / activated aperiodic CSI-RS configuration is a CSI-RS configuration that can be selected for use but has not yet been used.

[0122] - The UE can perform measurements on valid / activated aperiodic CSI-RS resources; and / or

[0123] - Ignore the instruction.

[0124] In some embodiments, for a non-periodic CSI-RS configuration, an invalid / deactivated CSI-RS configuration indicates at least one of the following:

[0125] - An invalid / deactivated non-periodic CSI-RS configuration cannot be triggered / activated by another DCI. In other words, an invalid / deactivated non-periodic CSI-RS configuration cannot be selected for use; and / or

[0126] - Ignore the instruction.

[0127] In some embodiments, the other DCI mentioned above is a DCI with a CSI request field.

[0128] Some aspects of this disclosure are described below, but this disclosure is not limited thereto.

[0129] Aspect 1: Configuration Information

[0130] Figure 4 A schematic diagram illustrating configuration information according to an embodiment is shown. For example... Figure 4 As shown, the CSI-RS configuration information, including CSI-ResourceConfig, NZP CSI-RS ResourceSet, NZP CSI-RS Resource, CSI-RS ResourceMapping, CSI-IM ResourceSet, CSI-IM Resource, and / or other configurations, can correspond to group IDs / indexes. Details in this regard will be described below.

[0131] In some embodiments, the UE may receive higher-layer signaling. Higher-layer signaling may be MAC CE signaling or RRC signaling. Higher-layer signaling includes at least one of CSI-RS configuration information, CSI report configuration, and / or group ID / index.

[0132] In some embodiments, CSI-RS configuration information may include at least one of the following: CSI-ResourceConfig, NZP CSI-RS ResourceSet, NZP CSI-RS Resource, CSI-RS resourceMapping, CSI-MeasConfig, ZP-CSI-RS-ResourceSet, ZP-CSI-RS-Resource and / or CSI-IM-ResourceSet, CSI-IM-Resource.

[0133] In some embodiments, the group ID / index may be associated with CSI-RS configuration information or CSI report configuration.

[0134] In some embodiments, a group ID / index is associated with CSI-RS configuration information. The group ID / index indicates the group to which the CSI-RS configuration information belongs.

[0135] In some embodiments, a group ID / index may be associated with at least one of the following: CSI-ResourceConfig, NZP CSI-RS ResourceSet, NZP CSI-RS Resource, CSI-RS resourceMapping, ZP-CSI-RS-ResourceSet, ZP-CSI-RS-Resource, CSI-IM-ResourceSet, CSI-IM-Resource, and / or CSI measurement configuration. For example, a group ID / index may be associated with an NZP CSI-RS ResourceSet. One NZP CSI-RS ResourceSet may be configured with group ID / index 0, while another NZP CSI-RS ResourceSet may be configured with resource group ID / index 1.

[0136] In some embodiments, a CSI measurement configuration (e.g., CSI-MeasConfig) is used to configure a CSI-RS belonging to a serving cell, the CSI-MeasConfig being included in the serving cell, a channel state information report to be transmitted on the PUCCH of the serving cell, the CSI-MeasConfig being included in the serving cell, and a channel state information report on the PUSCH triggered by a DCI received on the serving cell in which the CSI-MeasConfig is included.

[0137] In some embodiments, multiple CSI-ResourceConfig, NZP CSI-RS ResourceSet, NZP CSI-RS Resource, ZP-CSI-RS-ResourceSet, ZP-CSI-RS-Resource, and / or CSI-RSresourceMapping may be associated with the same group ID / index.

[0138] In some embodiments, CSI-MeasConfig, CSI-ResourceConfig, NZP CSI-RSResourceSet, NZP CSI-RS Resource, ZP-CSI-RS-ResourceSet, ZP-CSI-RS-Resource and / or CSI-RS resourceMapping may be associated with one or more group IDs / indexes.

[0139] In some embodiments, only the first type of CSI-RS configuration information can be associated with the group ID / index.

[0140] In some embodiments, the first CSI-RS configuration information may be associated with a first time-domain behavior. The time-domain behavior includes aperiodic, periodic, or semi-persistent time behaviors. For example, the first time-domain behavior includes at least an aperiodic time behavior. In another example, the first time-domain behavior includes at least a periodic time behavior.

[0141] In some embodiments, CSI-RS configuration information can be configured without a group ID / index. Furthermore, CSI-RS configuration information without a group ID / index is not controlled by the first signaling indication.

[0142] In some embodiments, CSI reporting configurations may be associated with multiple CSI-RS configuration pieces of information (e.g., multiple CSI-ResourceConfig or resourcesForChannelMeasurement), and these multiple CSI-RS configuration pieces of information may be associated with different group IDs.

[0143] In some embodiments, CSI reporting configurations can be associated with group IDs / indexes.

[0144] In some embodiments, the CSI report configuration is CSI-ReportConfig.

[0145] In some embodiments, only the first CSI report configuration can be associated with a group ID / index.

[0146] In some embodiments, a first CSI reporting configuration may be associated with a first time-domain behavior. The time-domain behavior may be 'aperiodic', 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH', and / or 'periodic'. In some embodiments, the first time-domain behavior may include at least a 'aperiodic' time-domain behavior. In some embodiments, the first time-domain behavior may include at least one of the following: 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH', and / or 'periodic' time-domain behavior. In some embodiments, the first time-domain behavior may include at least a 'periodic' time-domain behavior.

[0147] In some embodiments, a first CSI reporting configuration may be associated with a first reporting volume. Reporting volumes include 'None', 'cri-RI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', 'pdsch-BundleSizeForCSI', 'cri-Ri-CSI', 'cri-RSRP', 'ssb-Index-RSRP', and / or 'cri-RI-LI-PMI-CQI'. In some embodiments, the first reporting volume includes at least one of the following: 'cri-RI-PMI-CQI', 'cri-RI-i1', 'cri-RI-i1-CQI', 'cri-Ri-CSI', and / or 'cri-RSRP'.

[0148] In some embodiments, a first CSI reporting configuration may be associated with a first purpose. This purpose includes channel measurement (a CSI reporting configuration configured with resourcesForChannelMeasurement), interference measurement (a CSI reporting configuration configured with csi-IM-ResourcesForInterference), or intra-cell interference measurement (a CSI reporting configuration configured with nzp-CSI-RS-ResourcesForInterference). For example, the first purpose includes at least channel measurement and intra-cell interference measurement.

[0149] In some embodiments, CSI reporting configurations may be associated with zero or one or more group IDs / indexes.

[0150] In some embodiments, a group ID / index may be associated with zero or one or more CSI report configurations.

[0151] In some embodiments, triggering / activating / enabling a CSI report configuration with a group ID means that triggering / activating / enabling is configured as a CSI-RS configuration associated with the CSI report configuration.

[0152] In some embodiments, if the semi-persistent CSI-RS configuration is valid or activated by a first signaling or predefined information, the corresponding CSI reporting configuration is also valid / activated.

[0153] In some embodiments, if the CSI-RS configuration is valid / activated, the corresponding CSI report configuration is also valid / activated.

[0154] In some embodiments, the group index / ID of CSI-RS resources in the same CSI-RS resource set should be the same.

[0155] In some embodiments, the group index / ID of CSI-RS configurations associated with the same CSI reporting configuration should be the same.

[0156] In some embodiments, a CSI report configuration (CSI-ReportConfig) can be associated with a CSI-RS configuration configured with different group indexes / IDs.

[0157] In some embodiments, there is a hierarchical relationship between groups.

[0158] In some embodiments, a hierarchy means that a group can be considered a parent group. A first configuration of the CSI-RS resource configuration in a subgroup can be a subset of the CSI-RS resource configuration in the parent group, or it can be the same as the parent group. In another embodiment, a hierarchy means that a group can be considered a parent group. A first configuration of (or more) subgroups can be a subset of the parent group, or it can be the same as the parent group.

[0159] In some embodiments, a subgroup can also be considered a parent group and has some subgroups.

[0160] In some embodiments, the first configuration includes at least one of the following: time-domain and / or frequency-domain resources, CDM type, number of ports (e.g., number of ports), density, and CDM group index.

[0161] In some embodiments, no CDM is a subset of {FD-CDM2,CDM4(FD2,TB2),CDM8(FD2,TD4)}, FD-CDM2 is a subset of {CDM4(FD2,TB2),CDM8(FD2,TD4)}, and CDM4(FD2,TB2) is a subset of CDM8(FD2,TD4).

[0162] In some embodiments, the smaller number of ports is a subset of the larger number of ports. For example, the number of ports 4 is a subset of the number of ports 8.

[0163] In some embodiments, a smaller density is a subset of a larger density. For example, a density of 0.5 is a subset of a density of 1.

[0164] In some embodiments, the time-domain and / or frequency-domain resources of a parent group (e.g., the root group) are the union of the time-domain and / or frequency-domain resources of other groups.

[0165] Figure 5 A schematic diagram illustrating configuration information according to an embodiment is shown. For example... Figure 5 As shown, group ID / index 'Group 1' can be associated with the first NZP-CSI-RS-ResourseSet, and group ID / index 'Group 2' can be associated with a second NZP-CSI-RS-ResourseSet that is parallel to the first NZP-CSI-RS-ResourseSet.

[0166] Figure 6 A schematic diagram illustrating configuration information according to an embodiment is shown. For example... Figure 6 As shown, group ID / index 'Group 1' can be associated with a first CSI-RS-ResourseMapping, group ID / index 'Group 2' can be associated with a second CSI-RS-ResourseMapping, and group ID / index 'Group 3' can be associated with a third CSI-RS-ResourseMapping. In this embodiment, group 3 can be a subgroup of group 2, and the number of ports (e.g., nrofPorts) of the third CSI-RS-ResourseMapping can be a subset of the number of ports (e.g., port count) of the second CSI-RS-ResourseMapping. In this embodiment, group 2 can be a subgroup of group 1, and the number of ports of the second CSI-RS-ResourseMapping can be a subset of the number of ports of the first CSI-RS-ResourseMapping. The number of ports of the third CSI-RS-ResourseMapping can be a subset of the number of ports of the first CSI-RS-ResourseMapping.

[0167] In some embodiments, the time-domain and / or frequency-domain resources of one group may be a subset of the time-domain and / or frequency-domain resources of another group.

[0168] In some embodiments, the time-domain and / or frequency-domain resources of the group with the smaller port configuration are a subset of the time-domain and / or frequency-domain resources of the group with the larger port configuration.

[0169] In some embodiments, the CDM (Code Division Multiplexing) type of the CSI RS resources in the first group is the same as that of the CSIRS resources in the second group.

[0170] In some embodiments, the CDM type includes at least: no CDM, FD-CDM2, CDM4 (FD2, TD2), and CDM8 (FD2, TD4).

[0171] In some embodiments, if the time-domain and / or frequency-domain resources of the first group are a subset of the time-domain and / or frequency-domain resources of the second group, then the CDM (Code Division Multiplexing) type number of the CSI RS resources in the first group is less than the CDM type number of the CSI RS resources in the second group.

[0172] In some embodiments, a CDM type number of 1 indicates no CDM, 2 indicates FD-CDM2, 4 indicates CDM4(FD2,TD2), and 8 indicates CDM8(FD2,TD4).

[0173] In some embodiments, if the time-domain and / or frequency-domain resources of the first group are a subset of the time-domain and / or frequency-domain resources of the second group, then the number of CDM (code division multiplexing) groups of the CSI RS resources in the first group is less than the number of CDM groups of the CSI RS resources in the second group.

[0174] In some embodiments, the number of CDM groups is determined based on the CDM type number and the number of ports. Number of CDM groups = Number of ports / CDM type number. Each CDM group is associated with a CDM group index. The CDM group index is counted from 0 to the number of CDM groups - 1.

[0175] In some embodiments, if the time-domain and / or frequency-domain resources of the first group are a subset of the time-domain and / or frequency-domain resources of the second group, then the CDM (Code Division Multiplexing) group index of the CSIRS resources in the first group is a subset of the CDM group index of the CSIRS resources in the second group.

[0176] In some embodiments, if the time-domain and / or frequency-domain resources of the first group are a subset of the time-domain and / or frequency-domain resources of the second group, then the density of CSIRS resources in the first group is less than the density of CSIRS resources in the second group.

[0177] In some embodiments, if the time-domain and / or frequency-domain resources of the first group are a subset of the time-domain and / or frequency-domain resources of the second group, then the powerControlOffset / powerControlOffsetSS configured for the CSIRS resources in the first group is associated with the powerControlOffset / powerControlOffsetSS configured for the CSIRS resources in the second group. For example, the powerControlOffset / powerControlOffsetSS configured for the CSIRS resources in the first group is reduced by 10*log compared to the powerControlOffset / powerControlOffsetSS configured for the CSIRS resources in the second group. 10 (P1 / P2)dB, where P1 is the number of ports configured for the CSI RS resources in the second group, and P2 is the number of ports configured for the CSI RS resources in the first group.

[0178] In some embodiments, the powerControlOffset / powerControlOffsetSS configured for CSI RS resources in the first group is associated with the powerControlOffset / powerControlOffsetSS configured for CSI RS resources in the second group. In some embodiments, the powerControlOffset / powerControlOffsetSS configured for CSI RS resources in the first group is smaller than the powerControlOffset / powerControlOffsetSS configured for CSI RS resources in the second group.

[0179] For example, the powerControlOffset / powerControlOffsetSS configured for CSI RS resources in the first group is 10*log less than the powerControlOffset / powerControlOffsetSS configured for CSI RS resources in the second group. 10 (P1 / P2)dB, where P1 is the number of ports configured for the CSI RS resources in the second group, and P2 is the number of ports configured for the CSI RS resources in the first group. P1 is greater than P2.

[0180] Aspect 2: First Signaling

[0181] In some embodiments, the UE receives a first signaling message, which includes a CSI-RS configuration indication.

[0182] In some embodiments, the CSI-RS configuration indication indicated by the first signaling includes at least one of the following: group ID / index indication, group activation / deactivation indication, base station status indication, antenna count indication, aperiodic CSI-RS resource activation indication, aperiodic CSI report activation indication, and semi-persistent CSI-RS resource activation indication.

[0183] In some embodiments, the CSI-RS configuration indicates the group ID implicitly or explicitly. In some embodiments, the CSI-RS configuration indicates whether to activate or deactivate a group implicitly or explicitly.

[0184] In some embodiments, the antenna count indicates the number of gNB antennas or the maximum number of CSI-RS antenna ports. Each antenna count may be associated with a group ID, meaning the antenna count implicitly indicates the group ID.

[0185] In some embodiments, the group ID / index indicator specifies the CSI-RS configuration group for the UE. The indicated CSI-RS configuration group is valid / activated. The CSI-RS configuration group for the UE means that the UE can perform measurements according to the CSI-RS configuration associated with the indicated group ID / index.

[0186] In some embodiments, a base station status indicator specifies base station power-saving information. The base station status indicator implicitly indicates a group. For example, a base station may have multiple power-saving states, each of which may be associated with a CSI-RS configuration group. If a base station status is indicated, the corresponding CSI-RS configuration group is valid / activated.

[0187] In some embodiments, the activation of an aperiodic CSI-RS resource indicates the triggering of aperiodic CSI-RS measurements and reports. In some embodiments, it may implicitly indicate a group ID / index. For example, if the UE receives a DCI that triggers an aperiodic CSI-RS resource, and the aperiodic CSI-RS resource is configured with a group ID / index, then a CSI-RS configuration or CSI report configured with the same group ID / index is activated / used. As another example, if the UE receives a DCI that triggers an aperiodic CSI-RS resource, and the aperiodic CSI-RS resource is configured with a group ID / index, then a CSI-RS resource or CSI report configured with a group ID / index less than or equal to the triggered group ID / index is activated / used.

[0188] In some embodiments, a semi-persistent CSI-RS resource activation indication can activate a semi-persistent CSI-RS resource. It can also implicitly indicate a group ID / index. For example, if the UE receives a first signaling (e.g., MAC CE), it activates a semi-persistent CSI-RS resource, and the semi-persistent CSI-RS resource is configured with a group ID / index. A CSI-RS configuration configured with the same group ID / index can also be valid / activated. In another example, if the UE receives a first signaling (e.g., MAC CE), it activates a semi-persistent CSI-RS resource, and the semi-persistent CSI-RS resource is configured with a group ID / index. A CSI-RS configuration configured with a smaller or the same group ID / index can also be valid / activated.

[0189] In some embodiments, if the UE receives a first signaling (e.g., MAC CE), it activates a semi-persistent CSI-RS resource, and the semi-persistent CSI-RS resource is configured with a group ID / index. A CSI-RS configuration (for semi-persistent CSI-RS) configured with the same group ID / index can also be valid / activated.

[0190] In some embodiments, the first signaling is DCI (Downlink Control Information).

[0191] In some embodiments, the DCI is a group common DCI. A group common DCI means that the DCI carries information for one or more UEs. Fields in the DCI are used to indicate information for one or more UEs.

[0192] In some embodiments, the X-bit field is used to indicate information for one or more UEs. Bitmaps or code points are used for the field.

[0193] In some embodiments, the indicated information is one or more group IDs / indexes, or one or more group ID / index activation / deactivation indicators. Group ID / index activation / deactivation is indicated by a bitmap. For example, each bit in the field indicates a group activation / deactivation message. '0' indicates that the group is deactivated, and '1' indicates that the group is activated. (For example, '011' indicates that groups 1 and 2 are activated, and group 0 is deactivated.)

[0194] In some embodiments, this information is group ID / index indication information. The group ID / index indication information is indicated by code points.

[0195] In some embodiments, the bit width of the field is determined based on higher-layer signaling.

[0196] For example, the bit width of a field is explicitly configured by higher-level signaling.

[0197] For example, the bit width of a field is determined by higher-level signaling (e.g., if the higher-level signaling indicates a group ID / index set and the configured number of groups is N, then the bit width is function(log2(N)). This function rounds up, down, or to the nearest whole number).

[0198] For example, the bit width of a field is determined based on the configured maximum group ID / index (M). In some embodiments, the bit width is function(log2(M)), which is a rounding up, rounding down, or rounding down function (e.g., for a UE configured with group IDs / indexes 0 and 2, the bit width is function(log2(2)), which is a rounding up, rounding down, or rounding down function).

[0199] For example, the bit width of a field is determined based on higher-layer signaling. The bit width is set to be the same as the number of groups configured for the UE.

[0200] For example, the bit width of a field is determined based on the UE's capabilities. UE capabilities can indicate at least one of the following: the maximum number of groups supported by the UE, the number of groups supported by the UE, and the bit width supported by the UE.

[0201] In some embodiments, the bit width is predefined.

[0202] In some embodiments, the location of the UE's fields is configured by higher-layer signaling.

[0203] In some embodiments, this field indicates a CSI-RS resource based on a bitmap.

[0204] In some embodiments, the DCI is a dedicated DCI. A dedicated DCI means that the DCI carries information for a UE.

[0205] In some embodiments, fields in a dedicated DCI are used to indicate this information.

[0206] In some embodiments, the bit width of the fields in the dedicated DCI may be determined in a manner similar to the embodiments described above, and details in this regard will not be described here.

[0207] In some embodiments, a dedicated DCI can be a scheduled DCI or a non-scheduled DCI. A scheduled DCI is a DCI that includes DL allocation or UL authorization. A non-scheduled DCI is a DCI that does not include scheduling information.

[0208] In some embodiments, the dedicated DCI includes a field indicating the triggering / activation of a CSI report or CSI-RS resource, which implicitly indicates the group ID / index if the triggered / activated CSI report or CSI-RS resource is configured with a group ID / index; otherwise, the field does not implicitly indicate the group ID / index.

[0209] In some embodiments, DCI is a broadcast or multicast DCI.

[0210] In some embodiments, the broadcast or multicast DCI is scrambled with at least one of the following RNTIs: MCCH-RNTI (Multicast Broadcast Service Control Channel RNTI), G-RNTI (Group RNTI), and G-CS-RNTI (Group Configuration Scheduling RNTI).

[0211] In some embodiments, fields in the broadcast or multicast DCI are used to indicate this information.

[0212] In some embodiments, the bit width of a field in a broadcast or multicast DCI may be determined in a manner similar to that described in the embodiments above, and details in this regard will not be described herein.

[0213] In some embodiments, the DCI is scrambled with a specific RNTI. For example, a specific RNTI is used only for CSI-RS configuration indication.

[0214] In some embodiments, DCI is scrambled with at least one of the following RNTIs: MCCH-RNTI, G-RNTI, and G-CS-RNTI.

[0215] In some embodiments, the DCI is a specific DCI. For example, a specific DCI is used only for CSI-RS configuration indication.

[0216] In some embodiments, the CSI-RS configuration indication indicated by DCI can only be used for at least: semi-persistent CSI-RS resources or non-periodic CSI-RS resources configured with group IDs / indexes.

[0217] In some embodiments, the first signaling is MAC CE.

[0218] In some embodiments, the MAC CE is scheduled by the broadcast / multicast DCI.

[0219] Each field in MAC CE indicates an activation / deactivation indication for a group.

[0220] In some embodiments, the MAC CE is a semi-persistent CSI-RS / CSI-IM resource set that activates / deactivates the MAC CE.

[0221] In some embodiments, the MAC CE indicates a CSI-RS configuration indication for multiple cells. For example, the MAC CE first indicates the serving cell ID, followed by the serving cell's CSI-RS configuration indication (see...). Figure 7A ).

[0222] In some embodiments, the CSI-RS configuration indication may be a CSI-RS resource set activation / deactivation indication.

[0223] In some embodiments, the CSI-RS configuration indication may be a serving cell group ID / index indication, a group ID / index activation / deactivation indication, an antenna count indication, a base station status indication, an aperiodic CSI-RS resource activation indication, a semi-persistent CSI-RS resource activation / deactivation indication, or an aperiodic CSI report activation indication.

[0224] In another example, the MAC CE first indicates the serving cell ID, and then indicates the group ID / index activation / deactivation indication for each group in the serving cell (GX_Y: activation / deactivation indication for group Y in serving cell X) (see...). Figure 7B ).

[0225] In some embodiments, MAC CE includes at least one of the following:

[0226] -CSI-RS configuration instructions;

[0227] - This field indicates whether the indicated group ID should be activated or deactivated. For example, the field is set to 1 to indicate activation, otherwise it indicates deactivation.

[0228] - Serving Cell ID: This field indicates the identifier of the serving cell to which MAC CE is applied;

[0229] -BWP ID, this field indicates the DL BWP to which MAC CE is applied; and / or

[0230] - Group ID, indicating the group that should be activated or deactivated.

[0231] In some embodiments, the first signaling is an SIB (System Information Block).

[0232] Aspect 3: Predefined Information

[0233] In some embodiments, the UE may perform, measure, and / or transmit CSI reports based on RRC signaling and predefined information. In some embodiments, the predefined information includes at least one of the following: timers, predefined patterns, and base station status.

[0234] In some embodiments, predefined information includes timers. Timers can be used to change the active group. For example, when a timer expires, the UE will switch to another group.

[0235] In some embodiments, the timer value is configured by RRC signaling. In some embodiments, the timer value is indicated by DCI or MAC CE.

[0236] In some embodiments, a timer starts or restarts when a specific group is activated. In some embodiments, the specific group is a subgroup or a group other than the baseline group.

[0237] In some embodiments, a timer is started or restarted when the UE receives a DL allocation or UL authorization.

[0238] In some embodiments, a timer is running when a baseline group is activated. In some embodiments, the baseline group is a parent group, a predefined group, a group associated with the maximum number of ports, or group 0.

[0239] In some embodiments, the UE will change to the baseline group when the timer expires.

[0240] In some embodiments, when a timer expires, the UE will change to group index -1 (for example, the UE changes from group 2 to group 1 after a timer expires, and changes to group 0 after another timer expires).

[0241] In some embodiments, when the timer expires, the UE will change to the group with index +1.

[0242] In some embodiments, timer values ​​are configured in groups (e.g., each group may be associated with a timer). In some embodiments, subgroups may be associated with a timer.

[0243] In some embodiments, the predefined information includes predefined patterns.

[0244] In some embodiments, the predefined pattern includes at least one of the following: a periodic pattern, a TDD pattern, and a configured pattern.

[0245] In some embodiments, the predefined pattern is a periodic pattern. When and which group will be activated / deactivated is determined by the periodic pattern. For example, the first group may be activated / enabled in the first cycle, the second group may be activated / enabled in the second cycle after the first cycle, the third group may be activated / enabled in the third cycle after the second cycle, and so on. The first group is activated / enabled again only after all groups have been activated / enabled within a cycle. Within a cycle, only one group will be activated / enabled, and the other groups are deactivated / deactivated.

[0246] In some embodiments, the loop can be configured via RRC signaling. The unit of the loop can be SF (system frame), time slot, millisecond, frame, or subframe.

[0247] In some embodiments, the predefined pattern is a TDD pattern. The activation / enable group can be changed for each TDD pattern. The TDD pattern can be configured by the tdd-UL-DL-ConfigurationCommon higher-level signal.

[0248] In some embodiments, predefined patterns are configured patterns, and different groups can be activated / enabled for different durations. One or more groups can be activated / enabled for the same duration. The configured pattern indicates the duration. In some embodiments, the configured pattern is configured by RRC signaling.

[0249] In some embodiments, the predefined information includes base station status.

[0250] In some embodiments, if the base station changes its base station state, the active / active group can be changed accordingly.

[0251] Aspect 4: UE Behavior

[0252] In some embodiments, the UE may perform, measure, and / or send CSI reports based on configuration signals (e.g., RRC signaling) and / or first signaling and / or predefined information.

[0253] In some embodiments, the TCI status of a semi-persistent CSI-RS or aperiodic CSI-RS is indicated by a first signaling or predefined information.

[0254] In some embodiments, the offset of semi-persistent CSI-RS or aperiodic CSI-RS is indicated by a first signaling or predefined information.

[0255] In some embodiments, the offset is indicated in the time-domain resource allocation field.

[0256] In some embodiments, the UE is configured with a CSI-RS configuration or CSI reporting configuration associated with a group ID / index. In some embodiments, if the UE does not receive a first signaling indicating CSI-RS configuration information (e.g., a group ID / index indication), the UE performs measurement and / or CSI reporting based on all active CSI-RS configurations. In some embodiments, if the UE does not receive a first signaling indicating CSI-RS configuration information (e.g., a group ID / index indication), the UE performs measurement and / or CSI reporting based on a CSI-RS resource associated with a first group ID / index, or the UE performs measurement and / or CSI reporting based on an active CSI-RS resource not associated with a group ID / index. In some embodiments, the first group ID / index is a group that includes a large number of CSI-RS ports. In some embodiments, the first group ID / index is group 0. In some embodiments, the first group ID / index is predefined.

[0257] In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information or CSI report configuration, the indicated CSI-RS configuration information or CSI report configuration is applied / validated / activated at least after a time delay (also known as a time period).

[0258] In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information or CSI report configuration, the UE performs CSI-RS measurements according to the indicated CSI-RS configuration information at least after a first time delay (also referred to as a first time period).

[0259] In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information or CSI reporting configuration, the UE reports CSI according to the indicated CSI-RS configuration information or CSI reporting configuration at least after a second time delay (also referred to as a second time period). In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information, the UE reports CSI according to the indicated CSI-RS configuration information at least after a second time delay following the receipt of a valid CSI-RS.

[0260] In some embodiments, if the UE receives a first signaling indicating a change in CSI-RS configuration information or CSI report configuration or activation group, the UE sends a CSI report at least after a valid CSI-RS configuration resource has been available.

[0261] In some embodiments, if the UE changes the active / active group based on predefined information, the corresponding group is applied / activated / activated at least after a time delay (also known as a third time period). In some embodiments, if the UE changes the active / active group based on predefined information, the UE performs CSI-RS measurements based on the corresponding group after a first time delay (also known as a fourth time period). In some embodiments, if the UE changes the active / active group based on predefined information, the UE reports CSI based on the corresponding group at least after a second time delay (also known as a fifth time period).

[0262] The first time delay can be less than or equal to the second time delay.

[0263] The time delay / first time delay / second time delay may be associated with at least one of the following: predefined value, time-domain behavior, UE capability, SFN (system frame number), SCS, ACK, FR (frequency range) type, PUSCH processing time, CSI calculation time, PDSCH processing time, BWP handover delay, and higher-layer signaling. In some embodiments, the time delay is the same as a time period or a third time period. In some embodiments, the first time delay is the same as a first time period or a fourth time period. In some embodiments, the second time delay is the same as a second time period or a fifth time period.

[0264] In some embodiments, the time delay / first time delay / second time delay is configured by higher-layer signaling.

[0265] In some embodiments, the time delay / first time delay / second time delay is associated with at least the UE capability and a predefined value. For example, different UE capabilities may be associated with different predefined values.

[0266] In some embodiments, the time delay / first time delay / second time delay is at least associated with the SFN. For example, after the SFN changes according to predefined information, the CSI-RS configuration or CSI report configuration in the activated group becomes effective from the first time slot in the SFN in which the UE receives the first signaling or group.

[0267] In some embodiments, the time delay / first time delay / second time delay is at least associated with the ACK. For example, the CSI-RS configuration or CSI report configuration in the active group is effective after the UE sends an ACK for the first signaling. In another example, the CSI-RS configuration or CSI report configuration in the active group is effective N symbols / slots / milliseconds / subframes after the UE sends an ACK for the first signaling.

[0268] In some embodiments, the time delay / first time delay / second time delay is associated with at least the BWP handover delay. For example, the CSI-RS configuration or CSI reporting configuration in the active group is effective after the BWP handover delay.

[0269] In some embodiments, the time delay / first time delay / second time delay is associated with at least the FR type. For example, the time delay / first time delay / second time delay of FR 1 is less than the time delay / first time delay / second time delay of FR 2.

[0270] In some embodiments, the time delay / first time delay / second time delay is at least associated with the PUSCH processing time. For example, the time delay / first time delay / second time delay is greater than or equal to the PUSCH processing time.

[0271] In some embodiments, the time delay / first time delay / second time delay is at least associated with the CSI calculation time. For example, the time delay / first time delay / second time delay is greater than or equal to the CSI calculation time.

[0272] In some embodiments, the time delay / first time delay / second time delay is associated with at least the PDSCH processing time. For example, the time delay / first time delay / second time delay is greater than or equal to the PDSCH processing time.

[0273] In some embodiments, the time delay / first time delay / second time delay are different for CSI-RS resources with different time-domain behaviors. Time-domain behaviors include 'aperiodic', 'semi-persistent', and 'periodic'. For example, the first time delay for 'aperiodic' CSI-RS resources is greater than the first time delay for 'semi-persistent' CSI-RS resources, and the first time delay for 'semi-persistent' CSI-RS resources is greater than the first time delay for 'periodic' CSI-RS resources.

[0274] In some embodiments, the time delay / first time delay / second time delay are different for different time-domain behavior CSI reports.

[0275] In some embodiments, the time delay / first time delay / second time delay are predefined values. These predefined values ​​can be N symbols / slots / subframes / milliseconds.

[0276] In some embodiments, the predefined value is N symbols / slots, and the SCS of the predefined value is based on at least one of the following:

[0277] -Minimum SCS among all active BWPs

[0278] - The smaller SCS between the DL BWP and the UL BWP, where the first signaling is received in the DL BWP and the CSI report is sent in the UL BWP.

[0279] - The minimum SCS in the DL BWP where the first signaling is received, the indicated CSI-RS resources in the DLBWP where they are configured, and the CSI report in the UL BWP where it is sent.

[0280] -Predefined SCS,

[0281] -SCS of the DL BWP, in which the first signaling is received.

[0282] - The SCS of the DL BWP, where the CSI-RS resource indicated in the DL BWP is configured or CSI-RS is received.

[0283] - The SCS of the UL BWP, in which the CSI report is sent.

[0284] -Schedule the SCS of the cell, and / or

[0285] - The SCS of the scheduled cell.

[0286] In some embodiments, if the UE receives a first signaling indicating a CSI-RS configuration information indication, or changes the active / active group according to predefined information, then during the time delay / first time delay / second time delay, the UE does not perform measurements on CSI-RS that will not be activated after the time delay / first time delay / second time delay according to the CSI-RS configuration information indication or predefined information.

[0287] In some embodiments, if the UE receives a first signaling indicating a CSI-RS configuration information indication, or changes the active / active group according to predefined information, then during the time delay / first time delay / second time delay, if the CSI is determined based on a CSI-RS that will not be activated after the time delay / first time delay / second time delay according to the CSI-RS configuration information indication or predefined information, the UE will not report the CSI.

[0288] In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information or changes the active / active group according to predefined information, the UE discards the CSI report. In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information or changes the active / active group according to predefined information, the UE does not send the CSI report generated before the change.

[0289] In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information, or changes the active / active group according to predefined information, the activated / active CSI-RS configuration can be activated at different times for different time-domain behaviors. For aperiodic CSI-RS configurations included in the activated CSI-RS resources, the aperiodic CSI-RS resources begin activation after a time delay and end at the end of the scheduled PUSCH containing the report associated with the aperiodic CSI-RS. For semi-persistent or periodic CSI-RS configurations included in the activated CSI-RS resources, the semi-persistent or periodic CSI-RS configurations begin activation after a time delay and end at the time slot where the deactivation indication is applied.

[0290] In some embodiments, the UE receives a first signaling indicating CSI-RS configuration information, whereby the CSI-RS configuration information is a group index indication or a group index activation / deactivation indication. If the indicated CSI-RS configuration information includes a group index that the UE has not configured, the UE ignores the corresponding indication.

[0291] For example, if a UE is configured with group {0,1}, and the UE receives a first signaling instruction indicating activation of group {2}, the UE ignores the instruction.

[0292] For example, if a UE is configured with group {0,1}, and the UE receives a first signaling instruction indicating the activation of group {2}, then the UE deactivates group {0,1}.

[0293] In some embodiments, the UE receives a first signaling indicating CSI-RS configuration information, and the CSI-RS configuration information is a group index indication or a group index activation / deactivation indication. If the indicated CSI-RS configuration information includes a group index that the UE has not configured, the UE uses a baseline group.

[0294] In some embodiments, the UE receives a first signaling indicating a CSI-RS configuration indication. The CSI-RS configuration indication may be valid only for CSI-RS resources or CSI-RS configurations having a second time-domain behavior. For example, the second time-domain behavior may be semi-persistent or periodic. As another example, the second time-domain behavior may include at least aperiodic behavior.

[0295] In some embodiments, the UE receives a first signaling indicating a CSI-RS configuration indication. The CSI-RS configuration indication may be valid only for CSI-RS resources or CSI-RS configurations having a second purpose. Purposes include channel measurement (CSI reporting configuration configured with resourcesForChannelMeasurement), interference measurement (CSI reporting configuration configured with CSI-IM-ResourcesForInterference), rate matching (configured with ZP-CSI-RS-Resource), or intra-cell interference measurement (CSI reporting configuration configured with nzp-CSI-RS-ResourcesForInterference). For example, the second purpose includes at least channel measurement. As another example, the second purpose includes at least one of the following: channel measurement, intra-cell interference measurement, and rate matching.

[0296] In some embodiments, the UE receives a first signaling indicating a CSI-RS configuration indication. The CSI-RS configuration indication may be valid only for CSI reporting configurations configured with a second time-domain behavior. The time-domain behavior of the CSI reporting configuration includes 'aperiodic', 'semiPersistentOnPUCCH', 'semiPersistentOnPUSCH', or 'periodic'. For example, the second time-domain behavior includes at least 'aperiodic'.

[0297] In some embodiments, the first signaling is DCI and MAC CE. DCI is used to indicate a CSI-RS configuration indication for either a semi-persistent or non-periodic CSI-RS configuration. And MAC CE is used to indicate a CSI-RS configuration indication for either a semi-persistent or periodic CSI-RS configuration.

[0298] In some embodiments, a CSI measurement report configuration in the CSI measurement report configuration and a corresponding configuration in the CSI-RS configuration information are activated accordingly. In one embodiment, a CSI measurement report configuration in the CSI measurement report configuration and a corresponding configuration in the CSI-RS configuration information are activated together. In one example, if the corresponding configuration in the CSI-RS configuration information is activated by a first signaling, one of the CSI measurement report configurations is implicitly activated. In another example, if one of the CSI measurement report configurations is activated by a first signaling, the corresponding configuration in the CSI-RS configuration information is implicitly activated.

[0299] In some embodiments, a CSI measurement report is also referred to as a CSI report or CSI.

[0300] Aspect 5: UE Capabilities

[0301] In some embodiments, the UE reports UE capabilities to the gNB. UE capabilities may include at least one of the following: whether it supports group index / ID indication, whether it supports CSI-RS configuration indication via DCI, whether it supports CSI-RS configuration indication via MAC CE, whether the terminal supports CSI-RS configuration indication, whether it supports configured group index / ID, the number of supported groups, the maximum number of supported groups, and / or the number of port number types that can be reported at the same time or in the same time slot.

[0302] In some embodiments, UE capabilities are transmitted via MAC CE, BSR (Buffer Status Report), CSI report, SRS (Sound Reference Signal), or RRC signaling.

[0303] Aspect 6: UE Assistance Information

[0304] In some embodiments, the UE reports UE assistance information to the gNB. The UE assistance information may include at least one of the following: preferred group index / ID, preferred group, number of preferred groups, maximum number of preferred groups, preference for fallback to the baseline group or root group, number of preferred groups, maximum number of preferred groups, maximum number of preferred ports, preferred fallback to the baseline group, preferred switch to power saving mode, preferred TCI (Transmission Configuration Indicator) status, and preferred beam indication.

[0305] In some embodiments, UE assistance information is transmitted via UCI, PUSCH, or UL MAC CE signaling. In some embodiments, UE assistance information is transmitted via MAC CE, BSR (Buffer Status Report), CSI report, SRS (Sound Reference Signal), or RRC signaling.

[0306] In some embodiments, the UE sends UE assistance information after at least one of the following events occurs: beam failure, preamble transmission, RACH procedure, receiving CSI-RS configuration indication, and BWP handover.

[0307] Aspect 7: Enabling

[0308] In some embodiments, if an event occurs, a first signaling indication or group change based on predefined information is enabled. In some embodiments, enabling the first signaling indication means that the gNB can send the first signaling to the UE. In some embodiments, enabling the first signaling indication means that the UE will monitor the first signaling. In some embodiments, enabling the first signaling indication means that the gNB can send the first signaling with a CSI-RS configuration indication to the UE. In some embodiments, enabling the first signaling indication means that the field is present.

[0309] In some embodiments, the event includes at least one of the following:

[0310] -RRC signaling is configured to enable the first signaling indication CSI-RS configuration;

[0311] - A set of indexes / IDs is configured;

[0312] -RRC signaling is configured to enable group changes based on predefined information;

[0313] - Predefined information is configured (e.g., timers are configured); and / or

[0314] – The RRC signaling that enables the group indication is enabled or configured.

[0315] Figure 8 This is a schematic diagram relating to a wireless terminal 80 according to an embodiment of the present disclosure. The wireless terminal 80 may be a user equipment (UE), mobile phone, laptop, tablet computer, e-book reader, or portable computer system, and is not limited thereto. The wireless terminal 80 may include a processor 800 such as a microprocessor or application-specific integrated circuit (ASIC), a storage unit 810, and a communication unit 820. The storage unit 810 may be any data storage device storing program code 812 accessed and executed by the processor 800. Embodiments of the storage unit 810 include, but are not limited to, a subscriber identification module (SIM), read-only memory (ROM), flash memory, random access memory (RAM), hard disk, and optical data storage devices. The communication unit 820 may be a transceiver and is used to send and receive signals (e.g., messages or packets) based on the processing results of the processor 800. In one embodiment, the communication unit 820 is connected via… Figure 8 At least one antenna 822 shown transmits and receives signals.

[0316] In one embodiment, the storage unit 810 and the program code 812 may be omitted, and the processor 800 may include a storage unit with stored program code.

[0317] The processor 800 may implement any of the steps in the exemplary embodiment on the wireless terminal 80, for example, by executing program code 812.

[0318] The communication unit 820 may be a transceiver. Alternatively or additionally, the communication unit 820 may be a combination of a transmitting unit and a receiving unit configured to transmit signals to and receive signals from a wireless network node (e.g., a base station).

[0319] In some embodiments, the wireless terminal 80 can be used to perform the operations of the UE described above. In some embodiments, the processor 800 and the communication unit 820 cooperate to perform the operations described above. For example, the processor 800 performs the operations and sends or receives signals through the communication unit 820.

[0320] Figure 9 This diagram relates to a wireless network node 90 according to an embodiment of the present disclosure. The wireless network node 90 may be a satellite, base station (BS), network entity, mobility management entity (MME), serving gateway (S-GW), packet data network (PDN) gateway (P-GW), radio access network (RAN) node, next-generation RAN (NG-RAN) node, gNB, eNB, gNB central unit (gNB-CU), gNB distributed unit (gNB-DU), data network, core network, or radio network controller (RNC), and is not limited thereto. Furthermore, the wireless network node 90 may include (execute) at least one network function, such as access and mobility management function (AMF), session management function (SMF), user location function (UPF), policy control function (PCF), application function (AF), etc. The wireless network node 90 may include a processor 900, such as a microprocessor or ASIC, a storage unit 910, and a communication unit 920. The storage unit 910 may be any data storage device storing program code 912 accessed and executed by the processor 900. Examples of storage unit 910 include, but are not limited to, SIM, ROM, flash memory, RAM, hard disk, and optical data storage devices. Communication unit 920 may be a transceiver and is used to send and receive signals (e.g., messages or packets) based on the processing results of processor 900. In one example, communication unit 920 is connected via... Figure 9 At least one antenna 922 shown transmits and receives signals.

[0321] In one embodiment, the storage unit 910 and the program code 912 may be omitted. The processor 900 may include a storage unit containing the stored program code.

[0322] The processor 900 may, for example, implement any of the steps described in the example embodiment on the wireless network node 90 via executing program code 912.

[0323] The communication unit 920 may be a transceiver. Alternatively or additionally, the communication unit 920 may be a combination of a transmitting unit and a receiving unit configured to transmit signals to and receive signals from a wireless terminal (e.g., a user equipment or another wireless network node).

[0324] In some embodiments, the wireless network node 90 can be used to perform the operations of the gNB or base station described above. In some embodiments, the processor 900 and the communication unit 920 cooperate to perform the above operations. For example, the processor 900 performs the operations and sends or receives signals through the communication unit 920.

[0325] According to some embodiments of this disclosure, a wireless communication method includes: a wireless communication terminal (e.g., the UE described above) receiving control signaling from a wireless communication node (e.g., the gNB or base station described above), the control signaling including one or more Channel State Information Reference Signal (CSI-RS) configuration information associated with one or more group identifier IDs (e.g., the group ID / index described above), or one or more Channel State Information (CSI) measurement report configurations associated with one or more group IDs; the wireless communication terminal receiving first signaling including a CSI-RS configuration indication from the wireless communication node; and the wireless communication terminal performing at least one of the following based on at least one of the control signaling, the CSI-RS configuration indication, or predefined information: performing CSI-RS measurement or transmitting a Channel State Information (CSI) measurement report to the wireless communication node.

[0326] According to some embodiments of this disclosure, a wireless communication method includes: a wireless communication node sending control signaling to a wireless communication terminal, the control signaling including one or more Channel State Information Reference Signal (CSI-RS) configuration information associated with one or more group identifiers (IDs), or one or more Channel State Information (CSI) measurement report configurations associated with one or more group IDs; the wireless communication node sending a first signaling including a CSI-RS configuration indication to the wireless communication terminal; and the wireless communication node receiving a Channel State Information (CSI) measurement report from the wireless communication terminal based on at least one of the control signaling, the CSI-RS configuration indication, or predefined information.

[0327] In one embodiment, the control signaling may be the aforementioned higher-level signaling, which includes at least one of the aforementioned CSI-RS configuration information, CSI (measurement) report configuration, and / or group ID / index.

[0328] In one embodiment, the association between CSI-RS configuration information and one or more group IDs may include: the association between the configuration in the CSI-RS configuration information and the group ID / index.

[0329] In one embodiment, the association between the CSI measurement report configuration and one or more group IDs may include: the association between the CSI measurement report configuration and the group ID / index specified in the above embodiments.

[0330] In one embodiment, the CSI-RS configuration indication may include the indication or information in the first signaling described above.

[0331] The details of these wireless communication methods can be determined by referring to the above embodiments, and will not be repeated here.

[0332] While various embodiments of this disclosure have been described above, it should be understood that they are presented by way of example only and not by way of limitation. Similarly, various figures may depict exemplary architectures or configurations provided to enable those skilled in the art to understand the exemplary features and functionality of this disclosure. However, those skilled in the art will understand that this disclosure is not limited to the example architectures or configurations shown, but can be implemented using various alternative architectures and configurations. Furthermore, as will be understood by those skilled in the art, one or more features of one embodiment may be combined with one or more features of another embodiment described herein. Therefore, the breadth and scope of this disclosure should not be limited by any of the exemplary embodiments described above.

[0333] It should also be understood that any reference to elements using names such as "first," "second," etc., in this document generally does not restrict the number or order of these elements. Rather, these names serve as a convenient means of distinguishing two or more elements or instances of elements. Therefore, references to the first element and the second element do not imply that only two elements can be used or that the first element must somehow precede the second element.

[0334] Furthermore, those skilled in the art will understand that information and signals can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, and symbols that may be referenced in the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0335] Those skilled in the art will further understand that any of the various illustrative logic blocks, units, processors, devices, circuits, methods, and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., digital implementation, analog implementation, or a combination of both), firmware, program or design code in various forms including instructions (which may be referred to herein as "software" or "software unit" for convenience), or any combination of these techniques.

[0336] To clearly illustrate this interchangeability of hardware, firmware, and software, the functionality of various illustrative components, blocks, units, circuits, and steps has been generally described above. Whether such functionality is implemented as hardware, firmware, software, or a combination of these technologies depends on the specific application and design constraints imposed on the system as a whole. Those skilled in the art can implement the described functionality in various ways for each specific application, but such implementation decisions do not depart from the scope of this disclosure. According to various embodiments, processors, devices, components, circuits, structures, machines, units, etc., can be configured to perform one or more of the functions described herein. The terms "configured to" or "configured for" as used herein with respect to a specified operation or function mean a processor, device, component, circuit, structure, machine, unit, etc., physically constructed, programmed, and / or arranged to perform the specified operation or function.

[0337] Furthermore, those skilled in the art will understand that the various illustrative logic blocks, units, devices, components, and circuits described herein can be implemented within or executed by an integrated circuit (IC), which may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic device, or any combination thereof. Logic blocks, units, and circuits may also include antennas and / or transceivers for communicating with various components within a network or device. A general-purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other suitable configuration performing the functions described herein. If implemented in software, the functionality may be stored as one or more instructions or code on a computer-readable medium. Therefore, the steps of the methods or algorithms disclosed herein can be implemented as software stored on a computer-readable medium.

[0338] Computer-readable media include both computer storage media and communication media, with communication media encompassing any medium capable of transferring computer programs or code from one place to another. Storage media can be any available medium that is accessible to a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that is accessible to a computer.

[0339] In this document, the term "unit" as used herein refers to software, firmware, hardware, and any combination of such elements for performing the related functions described herein. Furthermore, for purposes of discussion, various units are described as discrete units; however, as will be apparent to those skilled in the art, two or more units may be combined to form a single unit performing the associated functions according to embodiments of this disclosure.

[0340] Furthermore, memories or other storage devices and communication components may be employed in the embodiments of this disclosure. It should be understood that, for clarity, the above description has referenced various functional units and processors in the embodiments of this disclosure. However, it is clear that any suitable functional distribution among different functional units, processing logic elements, or domains may be used without departing from this disclosure. For example, a function shown to be performed by a separate processing logic element or controller may be performed by the same processing logic element or controller. Therefore, references to specific functional units are merely references to suitable means for providing said functionality and do not indicate a strict logical or physical structure or organization.

[0341] Various modifications to the implementations described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other implementations without departing from the scope of the claims. Therefore, this disclosure is not intended to be limited to the implementations shown herein, but should be accorded the widest scope consistent with the novel features and principles disclosed herein, as set forth in the following claims.

Claims

1. A method of wireless communication, comprising: receiving, by a wireless communication terminal from a wireless communication node, control signaling comprising one or more channel state information reference signal (CSI-RS) configuration information associated with one or more group identifiers (IDs), wherein the control signaling is configured to be used by the wireless communication terminal to perform at least one of: CSI-RS measurement, or transmission of channel state information (CSI) measurement report to the wireless communication node, wherein there is a hierarchical relationship between CSI-RS configurations associated with different group IDs in the one or more group IDs, a first one of the CSI-RS configurations in a group as a child group is a subset of the CSI-RS configurations in a group as a parent group, or the first one is identical to the CSI-RS configurations in the group as the parent group; wherein the first one comprises a number of ports, the number of ports of the child group is less than or equal to the number of ports of the parent group; the method further comprising: reporting, by the wireless communication terminal to the wireless communication node, a capability of the wireless communication terminal, the capability of the wireless communication terminal comprising at least a maximum number of supported groups. 2.The method of wireless communication of claim 1, further comprising: receiving, by the wireless communication terminal from the wireless communication node, first signaling comprising a CSI-RS configuration indication; and performing, by the wireless communication terminal based on at least one of: the control signaling, the CSI-RS configuration indication, or pre-defined information, at least one of: CSI-RS measurement, or transmission of channel state information (CSI) measurement report to the wireless communication node. 3.The method of wireless communication of claim 2, wherein the first signaling comprises at least one of: common downlink control information (DCI), dedicated DCI, broadcast DCI, multicast DCI, MAC CE, or system information block (SIB). 4.The method of wireless communication of claim 3, wherein the MAC CE comprises at least one of: a field indicating one or more activation or deactivation of the one or more group IDs, serving cell ID, bandwidth part (BWP) ID, or one or more indicated group IDs. 5.The method of wireless communication of claim 1, wherein the capability of the wireless communication terminal further comprises at least one of: whether to support group index or group ID indication; whether to support CSI-RS configuration indication by DCI; whether to support CSI-RS configuration indication by MAC CE; whether the wireless communication terminal supports CSI-RS configuration indication; whether to support being configured with group index or group ID; a supported number of groups; or a number of types of port numbers that can be reported at a same time or at a same slot. 7.A method of wireless communication, comprising: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 6. The wireless communication method of claim 1, wherein a powerControlOffset or a powerControlOffsetSS configured for a CSI RS resource in a first group of the groups is reduced by 10 log 10 (P1 / P2) dB, where the P1 is a number of ports configured for the CSI RS resource in the second group, the P2 is a number of ports configured for a CSI RS resource in the first group, and the P1 is greater than the P2. ​ transmitting, by a wireless communication node, control signaling to a wireless communication terminal, the control signaling comprising one or more channel state information reference signal, CSI-RS, configuration information associated with one or more group identifiers, IDs, wherein the control signaling is configured to be used by the wireless communication terminal to perform at least one of: CSI-RS measurement, or transmission of channel state information, CSI, measurement report to the wireless communication node, wherein there is a hierarchical relationship between CSI-RS configurations associated with different group IDs in the one or more group IDs, a first one of the CSI-RS configurations in a group as a child group is a subset of the CSI-RS configurations in a group as a parent group, or the first one is identical to the CSI-RS configurations in the group as the parent group; wherein the first one comprises a number of ports, the number of ports of the child group is less than or equal to the number of ports of the parent group; the method further comprising: receiving, by the wireless communication node, a capability of the wireless communication terminal reported by the wireless communication terminal, the capability of the wireless communication terminal comprising at least a maximum number of supported groups.

8. The wireless communication method of claim 7, further comprising: transmitting, by the wireless communication node, first signaling comprising a CSI-RS configuration indication to the wireless communication terminal; and receiving, by the wireless communication node from the wireless communication terminal, a channel state information, CSI, measurement report to the wireless communication node based on at least one of the control signaling, the CSI-RS configuration indication, or pre-defined information.

9. The wireless communication method of claim 8, wherein the first signaling comprises at least one of: common downlink control information, DCI, dedicated DCI, broadcast DCI, multicast DCI, MAC CE, or system information block, SIB.

10. The wireless communication method of claim 9, wherein the MAC CE comprises at least one of: the CSI-RS configuration indication, a field indicating one or more activation or deactivation of the one or more group IDs, a serving cell ID, a bandwidth part, BWP, ID, or one or more indicated group IDs.

11. The wireless communication method of claim 7, wherein the capability of the wireless communication terminal further comprises at least one of: whether group index or group ID indication is supported; whether CSI-RS configuration indication by DCI is supported; whether CSI-RS configuration indication by MAC CE is supported; whether the wireless communication terminal supports CSI-RS configuration indication; whether being configured with group index or group ID is supported; a number of supported groups; or a number of types of port numbers that can be reported at a same time or at a same slot.

13. A wireless communication terminal, comprising:

12. The wireless communication method of claim 7, wherein a powerControlOffset or a powerControlOffsetSS configured for a CSI RS resource in a first group of the groups is reduced by 10 log 10 (P1 / P2) dB, where the P1 is a number of ports configured for the CSI RS resource in the second group, the P2 is a number of ports configured for a CSI RS resource in the first group, and the P1 is greater than the P2. a communication unit; and a processor configured to: ​ ​ receiving, from a wireless communication node, control signaling comprising one or more channel state information reference signal, CSI-RS, configuration information associated with one or more group identifiers, IDs, wherein the control signaling is configured to be used by the wireless communication terminal to perform at least one of: CSI-RS measurement, or transmission of a channel state information, CSI, measurement report to the wireless communication node, wherein there is a hierarchical relationship between CSI-RS configurations associated with different ones of the one or more group IDs, in which a first one of the CSI-RS configurations in a group that is a child group is a subset of, or identical to, the CSI-RS configurations in a group that is a parent group; wherein the first one of the CSI-RS configurations comprises a number of ports, the number of ports of the child group being less than or equal to the number of ports of the parent group; wherein the processor is further configured to: receive, by the wireless communication node, a capability of the wireless communication terminal reported by the wireless communication terminal, the capability of the wireless communication terminal comprising at least a maximum number of supported groups.

14. The wireless communication terminal of claim 13, wherein the processor is further configured to: perform the wireless communication method of any one of claims 2 to 6.

15. A wireless communication node, comprising: a communication unit; and a processor configured to transmit, to a wireless communication terminal, control signaling comprising one or more channel state information reference signal, CSI-RS, configuration information associated with one or more group identifiers, IDs, wherein the control signaling is configured to be used by the wireless communication terminal to perform at least one of: CSI-RS measurement, or transmission of a channel state information, CSI, measurement report to the wireless communication node, wherein there is a hierarchical relationship between CSI-RS configurations associated with different ones of the one or more group IDs, in which a first one of the CSI-RS configurations in a group that is a child group is a subset of, or identical to, the CSI-RS configurations in a group that is a parent group; wherein the first one of the CSI-RS configurations comprises a number of ports, the number of ports of the child group being less than or equal to the number of ports of the parent group; wherein the processor is further configured to: receive, by the wireless communication node, a capability of the wireless communication terminal reported by the wireless communication terminal, the capability of the wireless communication terminal comprising at least a maximum number of supported groups.

16. The wireless communication node of claim 15, wherein the processor is further configured to perform the wireless communication method of any one of claims 8 to 12.

17. A computer program product comprising a computer readable program medium code stored thereon, the code, when executed by a processor, causing the processor to implement the wireless communication method of any one of claims 1 to 12. ​

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