Methods, apparatus and computer program products for wireless communication

Abstract

A wireless communication method is disclosed. The method includes: receiving control signaling from a wireless communication node by a wireless communication terminal, the control signaling including Channel State Information Reference Signal (CSI-RS) configuration information; receiving first signaling from the wireless communication node by the wireless communication terminal, the first signaling including a drop indication or a CSI-RS configuration indication associated with a number of ports; and performing at least one of the following by the wireless communication terminal based on at least one of the CSI-RS configuration information or the CSI-RS configuration indication in the first signaling: transmitting a CSI-RS measurement or a Channel State Information (CSI) measurement report to the wireless communication node.

Description

Technical Field

[0001] This document generally deals with wireless communication, and specifically with fifth-generation (5G) or sixth-generation (6G) wireless communication. Background Technology

[0002] 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, and multiple antennas. At the same time, greenhouse gas emissions and high power consumption caused by 5G 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

[0003] This document relates to methods, systems, and equipment used for CSI measurement and reporting.

[0004] One aspect of the present invention relates to a wireless communication method. In an embodiment, the wireless communication method includes: receiving control signaling from a wireless communication node by a wireless communication terminal, the control signaling including Channel State Information Reference Signal (CSI-RS) configuration information; receiving first signaling from the wireless communication node by the wireless communication terminal, the first signaling including a drop indication or a CSI-RS configuration indication associated with a number of ports; and performing at least one of the following by the wireless communication terminal based on at least one of the CSI-RS configuration information or the CSI-RS configuration indication in the first signaling: transmitting a CSI-RS measurement or a Channel State Information (CSI) measurement report to the wireless communication node.

[0005] Another aspect of this disclosure relates to a wireless communication method. In an embodiment, the wireless communication method includes: a wireless communication node sending control signaling to a wireless communication terminal, the control signaling including Channel State Information Reference Signal (CSI-RS) configuration information; the wireless communication node sending first signaling to the wireless communication terminal, the first signaling including a drop indication or a CSI-RS configuration indication associated with a number of ports; and the wireless communication node receiving from the wireless communication terminal a Channel State Information (CSI) measurement report to the wireless communication node based on at least one of the following: the CSI-RS configuration information, or the CSI-RS configuration indication in the first signaling.

[0006] 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 Channel State Information Reference Signal (CSI-RS) configuration information; receive first signaling from the wireless communication node, the first signaling including a drop indication or a CSI-RS configuration indication associated with a number of ports; and perform at least one of the following based on at least one of the CSI-RS configuration information or the CSI-RS configuration indication in the first signaling: transmission of a CSI-RS measurement or a Channel State Information (CSI) measurement report to the wireless communication node.

[0007] 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 Channel State Information Reference Signal (CSI-RS) configuration information; send first signaling to the wireless communication terminal, the first signaling including a drop indication or a CSI-RS configuration indication associated with a number of ports; and receive from the wireless communication terminal a Channel State Information (CSI) measurement report to the wireless communication node based on at least one of the following: the CSI-RS configuration information or the CSI-RS configuration indication in the first signaling.

[0008] Various embodiments can preferably achieve the following features:

[0009] Preferably, the control signaling includes at least one of the following: Radio Resource Control (RRC) signaling or Media Access Control (MAC) control element (CE) signaling.

[0010] Preferably, the control signaling includes at least one of the following: CSI-RS configuration information, CSI measurement report configuration, one or more CSI measurement configurations, or a list of ports including one or more port numbers or a set of one or more port numbers.

[0011] Preferably, one or more ports or a set of one or more ports are associated with at least one of the following: CSI-RS configuration information, CSI measurement report configuration, codebook configuration, power control offset adjustment value from the maximum number of ports, or CSI-RS resource mapping.

[0012] Preferably, the CSI-RS resource mapping includes at least one of the following: time-domain resources, frequency-domain resources, CDM groups, or power control offsets for a predefined number of ports, and wherein at least one of the time-domain resources, frequency-domain resources, CDM groups, or power control offsets for a first number of ports is determined according to at least one of the following: time-domain resources, frequency-domain resources, CDM groups, or power control offsets for a predefined number of ports.

[0013] Preferably, the CSI-RS resource mapping includes at least one of time-domain resources and frequency-domain resources, indicating that the CSI-RS resource mapping includes at least one of time-domain resource information and frequency-domain resource information for determining at least one of the time-domain resources and frequency-domain resources. In some embodiments, including at least one of time-domain resources and frequency-domain resources indicates that the CSI-RS resource mapping includes at least one of time-domain resource information and frequency-domain resource information for determining at least one of the time-domain resources and frequency-domain resources.

[0014] Preferably, the predefined number of ports is the maximum number of ports in the port number list, or the maximum number of ports in the set of ports configured in the CSI-RS resource mapping, or the number of ports configured in the CSI-RS resource mapping.

[0015] Preferably, the predefined number of ports is the maximum number of ports, and the time-domain resources, frequency-domain resources, CDM group, or power control offset for the first number of ports are determined according to at least one of the following: the time-domain resources, frequency-domain resources, CDM group, or power control offset for the maximum number of ports, wherein:

[0016] The time-domain and frequency-domain resources used for the first number of ports are M items of time-domain and frequency-domain resources used for the maximum number of ports; or

[0017] The time-domain and frequency-domain resources used for the first number of ports are the time-domain and frequency-domain resources used for the M CDM groups with the maximum number of ports; or

[0018] The CDM group used for the first number of ports is the first M CDM groups used for the maximum number of ports;

[0019] And M is equal to the number of first ports divided by the number of CDM types.

[0020] Preferably, the CSI-RS configuration information includes a CSI-RS resource set, and the CSI-RS resource set includes one or more CSI-RS resources configured with different numbers of ports.

[0021] Preferably, the CSI-RS resource set is used for at least one of the following: channel measurement, interference measurement.

[0022] Preferably, the CSI-RS resources include at least one of the following: time-domain resources, frequency-domain resources, CDM type, density, CDM group, or power control offset.

[0023] Preferably, there is a hierarchical relationship between CSI-RS resources.

[0024] Preferably, at least one of the first time-domain and frequency-domain resources, the first CDM group, or the first density used for the first CSI-RS resources corresponding to the first number of ports in the CSI-RS resources is a subset of at least one of the second time-domain and frequency-domain resources, the second CDM group, or the second density used for the second CSI-RS resources corresponding to the second number of ports in the CSI-RS resource set, and the first number of ports is less than the second number of ports.

[0025] Preferably, the first time-domain and frequency-domain resources for the CSI-RS resources corresponding to the maximum number of ports in the CSI-RS resources are the union of the time-domain and frequency-domain resources of all CSI-RS resources in the CSI-RS resource set.

[0026] Preferably, the power control offset for the first CSI-RS resource corresponding to the first number of ports in the CSI-RS resource set is less than the power control offset for the second CSI-RS resource corresponding to the second number of ports in the CSI-RS resource set, and the first number of ports is less than the second number of ports.

[0027] Preferably, the wireless communication terminal configures CSI-RS configuration information for different numbers of ports, and the CSI-RS resources configured in the CSI-RS configuration information are configured with the same number of ports, wherein the CSI-RS configuration information is CSI-RS resource setting or CSI resource configuration.

[0028] Preferably, if the CSI-RS resource mapping is associated with a list of ports configured with more than one port or a set of ports configured with more than one port, the wireless communication terminal performs CSI-RS measurements based on each valid port in the list of ports or the set of ports.

[0029] Preferably, the CSI-RS configuration indication includes at least one of the following: maximum port number indication, port number activation or deactivation indication, maximum port indication, port number indication, port number set indication, base station status indication, non-periodic CSI-RS resource activation indication, non-periodic CSI measurement report activation indication, discard indication, CSI measurement configuration indication, semi-persistent CSI-RS resource activation indication, or CSI-RS resource indication.

[0030] 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).

[0031] Preferably, the first signaling includes an indication field for one or more user equipment (UE) devices.

[0032] 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 according to at least one of the following: higher-layer signaling or a predetermined value.

[0033] 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.

[0034] Preferably, the dedicated DCI includes a field indicating the triggering or activation of a CSI measurement report or CSI-RS resource, and the number of ports of the CSI-RS resource corresponding to the CSI measurement report or the number of ports used for the CSI-RS resource is implicitly indicated by the field.

[0035] Preferably, the MAC CE includes at least one of the following: a CSI-RS configuration indication, a field indicating the activation or deactivation of the number of ports or a set of ports, a serving cell identifier ID, a bandwidth portion BWP ID, or a port list ID.

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

[0037] Apply, activate, or take effect the CSI-RS configuration information after a period of time relative to the time after receiving the first signaling;

[0038] Discard CSI measurement reports generated before the first signaling.

[0039] CSI-RS measurements are performed after a first time period relative to the receipt of the first signaling;

[0040] The transmission of the CSI measurement report is performed after a second time period relative to the receipt of a valid CSI-RS; or

[0041] The transmission of CSI measurement reports is performed after a second time period relative to the receipt of the first signaling or a valid CSI-RS configuration.

[0042] Preferably, at least one of the time period, the first time period, or the second 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) preparation processing time, CSI calculation time, frequency range (FR) type, bandwidth portion (BWP) handover delay, and higher-layer signaling or physical downlink shared channel (PDSCH) processing time.

[0043] Preferably, at least one of the time period, the first time period, or the second time period is predetermined or associated with the time-domain behavior of CSI-RS resources or the time-domain behavior of CSI measurement reports.

[0044] Preferably, during at least one of the time period, the first time period, or the second time period, the wireless communication terminal does not perform CSI-RS measurements for CSI-RS configurations that are not applied, effective, or activated after the time period.

[0045] Preferably, during at least one of the time period, the first time period, or the second time period, the wireless communication terminal does not send CSI measurement reports based on a CSI-RS configuration that is not activated after the time period or a CSI measurement report configuration that is not activated after the time period.

[0046] Preferably, the CSI-RS configuration and CSI measurement report configuration are activated accordingly.

[0047] Preferably, when the CSI-RS configuration indication indicates the number of ports that the wireless communication terminal has not configured, the wireless communication terminal ignores the CSI-RS configuration indication or performs the transmission of CSI measurement reports based on the baseline CSI-RS configuration.

[0048] Preferably, the baseline CSI-RS configuration is associated with a predetermined number of ports or a maximum number of ports.

[0049] Preferably, the CSI-RS configuration indication is valid when it is used for at least one of the following: non-periodic CSI measurement report activation indication, semi-persistent CSI-RS resource activation indication, or periodic CSI-RS resource indication.

[0050] Preferably, the CSI-RS configuration indication is valid when it is for a CSI-RS resource used for at least one of the following: channel measurement, interference measurement, rate matching, or intra-cell interference measurement.

[0051] Preferably, the CSI-RS configuration indication is valid when it is used for at least one of the following: non-periodic CSI measurement reporting, semi-continuous CSI measurement reporting, or periodic CSI measurement reporting.

[0052] Preferably, the wireless communication terminal sends at least one of the following to the wireless communication node: whether the wireless communication terminal supports a port number list indication, whether the wireless communication terminal supports having more than one port number configured in the CSI-RS resource, whether the wireless communication terminal supports a CSI-RS configuration indication via DCI, whether the wireless communication terminal supports a CSI-RS configuration indication via MAC CE, whether the wireless communication terminal supports a CSI-RS configuration indication, whether the wireless communication terminal supports having different port numbers configured in the CSI-RS resource set used for channel measurement, the maximum supported number of ports, or the number of port number types that can be reported at the same time or in the same time slot.

[0053] Preferably, the wireless communication terminal sends at least one of the following to the wireless communication node: preferred number of ports, preferred number of ports list, preferred maximum number of ports, preference for falling back to baseline CSI-RS configuration, preference for switching to power saving mode, preference for Transmission Configuration Indicator (TCI) status, and preference for beam indication.

[0054] Preferably, the first signaling is enabled when at least one of the following events occurs:

[0055] Radio Resource Control (RRC) signaling is configured to enable the first signaling;

[0056] CSI-RS resources associated with more than one port are configured;

[0057] The CSI-RS resource set used for channel measurements includes CSI-RS with different numbers of ports;

[0058] RRC signaling is enabled, and RRC signaling enablement means that CSI-RS resources are configured with more than one port; or

[0059] RRC signaling is enabled, which allows configuring more than one port for channel measurements within the CSI-RS resource set.

[0060] 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 node is able to send the first signaling with a CSI-RS configuration indication 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 ports.

[0061] Preferably, performing CSI-RS measurements or transmitting CSI measurement reports to the wireless communication node includes at least one of the following:

[0062] The wireless communication terminal does not measure CSI based on a deactivated CSI-RS configuration;

[0063] If a CSI measurement report is not associated with a valid or active CSI-RS configuration, the wireless communication terminal will not send a CSI measurement report.

[0064] The wireless communication terminal does not expect to receive signaling for triggering a trigger state associated with an invalid or deactivated CSI-RS configuration; or

[0065] The wireless communication terminal does not expect to receive signaling for triggering a trigger state associated with invalidating or deactivating CSI measurement report configuration;

[0066] The validity, activation, invalidation, or deactivation of CSI-RS configuration or CSI measurement report configuration is determined based on at least one of the following: CSI-RS configuration information or CSI-RS configuration indication in the first signaling.

[0067] Preferably, the wireless communication terminal not sending CSI measurement reports includes the wireless communication terminal not sending CSI measurement reports on the PUCCH or PUSCH configured for CSI measurement reports. Preferably, the wireless communication terminal not sending includes the wireless communication terminal not sending CSI measurement reports generated according to the CSI measurement report configuration.

[0068] Preferably, the wireless communication node receives at least one of the following from the wireless communication terminal: whether the wireless communication terminal supports a port number list indication; whether the wireless communication terminal supports having more than one port number configured in the CSI-RS resource; whether the wireless communication terminal supports a CSI-RS configuration indication via DCI; whether the wireless communication terminal supports a CSI-RS configuration indication via MAC CE; whether the wireless communication terminal supports a CSI-RS configuration indication; whether the wireless communication terminal supports having different port numbers configured in the CSI-RS resource set used for channel measurement; the maximum supported number of ports; or the number of port number types that can be reported at the same time or in the same time slot.

[0069] Preferably, the wireless communication node receives at least one of the following from the wireless communication terminal: preferred number of ports, preferred number of ports list, preferred maximum number of ports, preference for falling back to baseline CSI-RS configuration, preference for switching to power saving mode, preference for Transmission Configuration Indicator (TCI) status, and preference for beam indication.

[0070] 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.

[0071] 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.

[0072] 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 a sample order, and unless otherwise expressly stated, this disclosure is not limited to the specific order or hierarchy presented. Attached Figure Description

[0073] The above and other aspects and their implementations are described in more detail in the accompanying drawings, description and claims.

[0074] Figure 1 A schematic diagram of CSI resource configuration based on an example is shown.

[0075] Figure 2 The CSI-RS resource configuration according to an embodiment is shown.

[0076] Figure 3 A table is shown that indicates CSI-RS configuration instructions for multiple cells according to an embodiment.

[0077] Figure 4 An example of a schematic diagram of a wireless terminal according to an embodiment of the present disclosure is shown.

[0078] Figure 5 An example of a schematic diagram of a wireless network node according to an embodiment of the present disclosure is shown. Detailed Implementation

[0079] Figure 1 A schematic diagram of CSI resource configuration based on an example is shown.

[0080] 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.

[0081] 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.

[0082] CSI: The time and frequency resources that the UE can use to report CSI are controlled by the gNB. CSI can 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.

[0083] 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 all CSI resource settings linked to the CSI Measurement Reporting setting have the same DLBWP. 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.

[0084] CSI Measurement Reports: Each report setting CSI-ReportConfig With in the associated CSI- ResourceConfig The single downlink BWP (composed of higher-layer parameters) given in the text is used for channel measurement. BWP-Id (Instructions) are associated with it. CSI-ReportConfig The temporal behavior is determined by higher-level parameters. reportConfigType The indicator can be set to "non-periodic," "semiPersistentOnPUCCH," "semiPersistentOnPUSCH," or "periodic." For "periodic" and "semiPersistentOnPUCCH" / "semiPersistentOnPUSCH" CSI measurement reports, the configured periodicity and slot offset are applied to the parameter set (numerology) of the UL BWP on which the CSI measurement report is configured to be sent. High-level parameters reportQuantity Indicates the CSI-related, L1-RSRP-related, L1-SINR-related, or Capability[Set]Index-related quantities to be reported.

[0085] For non-periodic CSI-RS reporting, RRC configuration CSI-AperiodicTriggerStateListThis list includes the associatedReportConfigInfoList, which indicates multiple CSI measurement reporting configurations (hereinafter also referred to as CSI measurement reporting configurations). The DCI can trigger an entry in the CSI-AperiodicTriggerStageList. The UE will measure the CSI and report it based on the triggered entry. In some embodiments, the CSI measurement report is also referred to as a CSI measurement report or CSI.

[0086] For semi-persistent reporting on the PUSCH, a set of trigger states is configured by the higher-layer CSI-SemiPersistentOnPUSCH-TriggerStateList, where one of the trigger states is activated in the DCI using the CSI request field scrambled with SP (semi-persistent)-CSI-RNTI. The UE does not expect to receive a DCI scrambled with SP-CSI-RNTI that activates a semi-persistent CSI measurement report having the same CSI-ReportConfigId as a previously received semi-persistent CSI measurement report activated by a DCI scrambled with SP-CSI-RNTI. The semi-persistent CSI measurement report may include either a semi-persistent PUSCH CSI measurement report or a semi-persistent PUCCH CSI measurement report.

[0087] For semi-persistent reporting on the PUCCH, the PUCCH resource used to send CSI measurement reports is configured by reportConfigType. Semi-persistent reporting on the PUCCH is activated by the MAC CE activation command.

[0088] The number of ports in CSI-RS is configured by nrofPorts in 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.

[0089] 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 for a UE in the cell, the RRC signaling overhead can be high. Therefore, a new CSI-RS setting indication method should be considered.

[0090] In some embodiments, the number of antennas or antenna ports may be changed or reduced to reduce the power consumption of the gNB. In some embodiments, CSI measurements or CSI measurement reports may also change with the change in the number of antennas or antenna ports.

[0091] In some embodiments, the UE may perform one or more of the following operations, but is not limited thereto.

[0092] Receive RRC signaling, which includes at least CSI-RS configuration information.

[0093] Receive the first signaling, which includes a CSI-RS configuration indication.

[0094] Perform measurements and CSI measurement reports based on RRC signaling and / or first signaling.

[0095] Example 1: First signaling indicates the maximum number of ports

[0096] In this example, CSI-RS configuration information refers to CSI-RS resources. The UE is configured with multiple CSI-RS resources. Each CSI-RS resource can be associated with port number information. The maximum port number list can be predefined or configured by RRC signaling. The first signaling is DCI. The X bits of the field in the DCI are used to indicate a maximum port number in the maximum port number list. The bit width of the field is determined based on the number of maximum port numbers configured in the list. Each code point indicates a maximum port number. For example, RRC configures two maximum port values ​​{4, 8}. Bit "0" indicates a maximum port value of 4, and bit "1" indicates a maximum port value of 8. If the UE receives the DCI, and the CSI-RS resources associated with ports not greater than the maximum port number are valid / activated, while the CSI-RS resources associated with ports greater than the maximum port number are invalid / deactivated, then the UE performs measurements and CSI measurement reports based on the valid / activated CSI-RS resources.

[0097] In some embodiments, the number of ports associated with CSI-RS resources and / or other configurations described below may be explicitly indicated or implicitly indicated.

[0098] Example 2: The first signaling indicates the number of ports.

[0099] In this example, CSI-RS configuration information refers to CSI-RS resources. The UE is configured with multiple CSI-RS resources. Each CSI-RS resource can be associated with port number information. The first signaling is DCI. The X-bit field of the fields in the DCI is used to indicate the activation / deactivation of the port number list. The port number list table can be predefined or configured by RRC signaling. The bit width of the fields is determined based on the port number list table. This table includes multiple port number lists (or port number sets). Each bit indicates the activation / deactivation of the port number set. If the UE receives the DCI, and the CSI-RS resource associated with the activated port number is valid / activated, while the CSI-RS resources associated with other port numbers are invalid / deactivated, then the UE performs measurements and CSI measurement reports based on the valid / activated CSI-RS resources (see...). Figure 2 The number of active ports is the number of ports in the list (or set) of ports indicated by the first signaling.

[0100] In this disclosure, the number of active / enabled / enabled ports indicates that a CSI-RS resource is configured with an active / enabled / enabled port number.

[0101] The following describes what it means for CSI-RS configuration to be valid / activated / enabled in some embodiments, but is not limited thereto.

[0102] In some embodiments, a valid / activated CSI-RS configuration indicates that the UE performs measurements according to a valid / activated CSI-RS configuration.

[0103] In some embodiments, an invalid / deactivated CSI-RS configuration indicates that the UE does not perform measurements based on an invalid / deactivated CSI-RS 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 perform measurements on periodic CSI-RS configurations;

[0106] - Ignore the instruction; and / or

[0107] - If the periodic CSI-RS resource is not activated, 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 the periodic CSI-RS configuration;

[0110] - Ignore the instruction; and / or

[0111] - Release / deactivate invalid / deactivated periodic CSI-RS configurations.

[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 the semi-persistent CSI-RS configuration has been activated by the MAC CE, the UE can measure the semi-persistent CSI-RS configuration. In the prior art, semi-persistent CSI-RS resources can be activated by the 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 measurement 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] - The UE does not perform measurements on invalid / deactivated semi-persistent CSI-RS configurations;

[0118] - Ignore the instruction; and / or

[0119] - Release / deactivate invalid / deactivated semi-persistent CSI-RS configurations.

[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, you can choose to use a valid / activated aperiodic CSI-RS configuration.

[0122] - The UE can measure 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 aperiodic CSI-RS configuration cannot be triggered / activated by another DCI. In other words, an invalid / deactivated aperiodic CSI-RS configuration cannot be selected; 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] Receive higher-level signaling. Higher-level signaling can be MAC CE signaling or RRC signaling. Higher-level signaling includes at least one of the following: CSI-RS configuration information, CSI measurement report configuration, and one or more CSI measurement configurations (e.g., CSI-MeasConfig ) and / or a list of port numbers.

[0131] In some embodiments, CSI-RS configuration information or CSI measurement report configuration is associated with a list of port numbers. This includes one or more port numbers (e.g., the number of ports, or a set of one or more port numbers (e.g., each set includes one or more port numbers)).

[0132] In some embodiments, different CSI measurement configurations are configured using different higher-level signaling. In other words, each CSI measurement configuration is configured using one signaling. For example, one CSI measurement configuration uses CSI-MeasConfig, and another CSI measurement configuration uses CSI-MeasConfig-1.

[0133] In some embodiments, one or more CSI-MeasConfigs are configured in the list.

[0134] In some embodiments, the maximum number of ports configured differs in different CSI measurement configurations.

[0135] In some embodiments, one or more port numbers or a set of one or more port numbers are associated with at least one of the following: CSI-RS configuration information, CSI measurement report configuration, power control offset adjustment value from the maximum port number, codebook configuration, or CSI-RS resource mapping.

[0136] In some embodiments, the power control offset adjustment value from the maximum number of ports (A) is used to determine the power control offset of a CSI-RS configuration having the number of ports in the port number list (e.g., powercontrolOffset For example, the power control offset is equal to the power control offset calculated by dividing A by the maximum number of ports.

[0137] In some embodiments, the codebook configuration (e.g., CodebookConfig In CSI measurement report configuration (e.g., CSI-ReportConfig Configured in ). In some embodiments, IE CodebookConfig Codebooks used to configure Type I and Type II.

[0138] In some embodiments, a CSI-RS configuration can be configured with more than one number of ports. CSI-RS configuration information may include at least one of the following: CSI-ResourceConfig, NZP CSI-RS resource set, NZP CSI-RS resource, CSI-RS resourceMapping, CSI-IM-ResourceSet, and / or CSI-IM-Resource.

[0139] In some embodiments, it is assumed that the CDM type or density is the same for all ports in a list (or set) of ports.

[0140] In some embodiments, the list of ports in a CSI-RS configuration shares other configuration information. This other configuration information includes at least one of the following: density, frequencyDomainAllocation, firstOFDMSymbolInTimeDomain, firstOFDMSymbolInTimeDomain2, CDM type, and freqBand.

[0141] In some embodiments, CSI-RS configuration information is configured by a port count list (more than one port count), and time and / or frequency resources are configured by RRC signaling for the CSI-RS configuration information. The entire time and / or frequency resource is used for the CSI-RS configuration with the maximum number of ports configured in the port count list, while the time and / or frequency resources for CSI-RS configurations with other port counts can be derived from the time or frequency resources configured for the CSI-RS configuration with the maximum number of ports.

[0142] In some embodiments, the time and / or frequency resources of the other port numbers are the same as the first M time and / or frequency resources of the maximum port number (e.g., M = number of other ports / number of CDM types). The first M time and / or frequency resources of the maximum port number are the time and frequency resources of the first M CDM groups of the maximum port number. In some embodiments, the time and / or frequency resources of the other port numbers are the same as the M time and / or frequency resources of the maximum port number (e.g., M = number of other ports / number of CDM types). In some embodiments, the M time and / or frequency resources of the maximum port number are the time and frequency resources of the M CDM groups of the maximum port number. In some embodiments, the M CDM groups are configured by higher-layer signaling or predefined. In some embodiments, the M time and / or frequency resources of the maximum port number are configured by higher-layer signaling or predefined. In some embodiments, M is configured by RRC signaling or predefined.

[0143] For example, CSI-RS resources are configured with a port count list {24, 12} and the following information: frequencyDomainAllocation, firstOFDMSymbolInTimeDomain, density, and CDM type. This information can be used to determine the location of CSI-RS time and frequency resources and generate a CSI-RS sequence based on predefined information. The UE can determine the location of CSI-RS time and frequency resources by finding a row in the predefined information based on the configuration information (for example, see the table below).

[0144]

[0145] The k0, l0, k1, k2, and l1 in the table above are obtained from RRC signaling (e.g., frequencyDomainAllocation and firstOFDMSymbolInTimeDomain) and are used to indicate the location of time and frequency resources.

[0146] The time and frequency resources for the 24 ports are obtained via RRC signaling and are all listed in this table. According to the table, the CDM type is fd-CDM2, indicating that the number of CDM types is 2. The time and frequency resources for the 12 ports are the previous (12 / 2=6) time and frequency resource sets configured by RRC signaling. In other words, in the table above, for port X of 12, the following can be used... , , , , , , CDM group indices 0, 1, 2, 3, 4, and 5 can be used as time and frequency resources.

[0147] In some embodiments, the time and frequency resources of the smaller port number in the port number list are a subset of the time and time resources configured by RRC signaling.

[0148] In some embodiments, the CDM group with a smaller number of ports in the port number list is a subset of the CDM group configured by RRC signaling.

[0149] In some embodiments, the powerControlOffset / powerControlOffsetSS configured by RRC signaling is used for the maximum number of ports in the port number list configured in the CSI-RS resource. The powerControlOffset / powerControlOffsetSS used for another port number in the port number list configured in the CSI-RS resource is derived from the powerControlOffset / powerControlOffsetSS configured by RRC signaling. The powerControlOffset / powerControlOffsetSS used for other port numbers configured in the CSI-RS resource is less than the powerControlOffset / powerControlOffsetSS configured by RRC signaling.

[0150] For example, the powerControlOffset / powerControlOffsetSS used for another port number in the port number list configured in the CSI-RS resource is reduced compared to the powerControlOffset / powerControlOffsetSS configured by RRC signaling. dB. P1 is the maximum number of ports configured in the CSI-RS resource, and P2 is the number of ports in the list of ports configured for the CSI RS resource in the CSI-RS resource.

[0151] Aspect 2: Configuration information in another embodiment

[0152] According to another embodiment of this disclosure, the UE can receive higher-layer signaling. The higher-layer signaling can be MAC CE signaling or RRC signaling. The higher-layer signaling includes at least one of the following: CSI-RS configuration information and CSI measurement report configuration.

[0153] In some embodiments, CSI-RS resources within a set can be configured with different numbers of ports ( nrofPorts CSI-RS resources can be used for the first purpose. The first purpose can include at least channel measurement or interference measurement.

[0154] This application can include channel measurement (with CSI measurement report configuration configured with resourcesForChannelMeasurement), interference measurement (with CSI measurement report configuration configured with csi-IM-ResourcesForInterference), rate matching (with ZP-CSI-RS-Resource), or intra-cell interference measurement (with CSI measurement report configuration configured with nzp-CSI-RS-ResourcesForInterference).

[0155] In some embodiments, there is a hierarchical relationship between CSI-RS resources configured within a set.

[0156] The hierarchical relationship indicates that the time and / or frequency resource locations of CSI-RS resources configured with a smaller number of ports are a subset of the time and / or frequency resource locations of CSI-RS resources configured with a larger number of ports within a set.

[0157] In some embodiments, a first configuration of a CSI-RS resource with a smaller number of ports is a subset of or identical to another CSI-RS resource configured with a larger number of ports. In some embodiments, a certain first configuration of a CSI-RS resource with a smaller number of ports is a subset of another CSI-RS resource configured with a larger number of ports. Furthermore, another first configuration of a CSI-RS resource with a smaller number of ports is identical to another CSI-RS resource configured with a larger number of ports.

[0158] The first configuration includes at least one of the following: time and / or frequency resources, CDM type, density, and CDM group index.

[0159] 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).

[0160] 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.

[0161] In some embodiments, the time and / or frequency resources of CSI-RS resources configured with the maximum number of ports are the combined set of time and / or frequency resources of all CSI-RS resources within the set.

[0162] In some embodiments, the powerControlOffset / powerControlOffsetSS configured for a CSI RS resource with a smaller number of ports is associated with the powerControlOffset / powerControlOffsetSS configured for a CSI RS resource with a larger number of ports. In some embodiments, the powerControlOffset / powerControlOffsetSS configured for a CSI RS resource with a smaller number of ports is smaller than the powerControlOffset / powerControlOffsetSS configured for a CSI RS resource with a larger number of ports.

[0163] For example, the powerControlOffset / powerControlOffsetSS configured for CSI RS resources with a smaller number of ports is reduced compared to the powerControlOffset / powerControlOffsetSS configured for CSI RS resources with a larger number of ports. dB, P1 is the number of ports configured for CSI RS resources with a larger number of ports, and P2 is the number of ports configured for CSI RS resources with a smaller number of ports.

[0164] In some embodiments, the powerControlOffset / powerControlOffsetSS configured for a CSI RS resource with a smaller number of ports is associated with the powerControlOffset / powerControlOffsetSS configured for a CSI RS resource with a maximum number of ports. In some embodiments, the powerControlOffset / powerControlOffsetSS configured for a CSI RS resource with a smaller number of ports is less than the powerControlOffset / powerControlOffsetSS configured for a CSI RS resource with a maximum number of ports.

[0165] For example, the powerControlOffset / powerControlOffsetSS configured for CSI RS resources with a smaller number of ports is less than the powerControlOffset / powerControlOffsetSS configured for CSI RS resources with the maximum number of ports. dB, P1 is the number of ports configured for CSI RS resources with a larger number of ports, and P2 is the number of ports configured for CSI RS resources with a smaller number of ports.

[0166] Aspect 3: Configuration information in another embodiment

[0167] In some embodiments, the UE may be configured with multiple CSI-RS configuration information associated with different port number configurations.

[0168] In some embodiments, there is a hierarchical relationship between CSI-RS configuration information.

[0169] The hierarchical relationship indicates that the time and / or frequency resource location of the CSI-RS configuration information associated with a smaller number of ports is a subset of the time and / or frequency resource location of the CSI-RS configuration information associated with a larger number of ports.

[0170] In some embodiments, a first configuration of a CSI-RS configuration information associated with a smaller number of ports is a subset of or the same as another CSI-RS configuration information associated with a larger number of ports.

[0171] The first configuration includes at least one of the following: time and / or frequency resources, CDM type, density, CDM group index, powerControlOffset or powerControlOffsetSS.

[0172] 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).

[0173] 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.

[0174] In some embodiments, the powerControlOffset / powerControlOffsetSS configured for the first CSI RS configuration is less than the powerControlOffset / powerControlOffsetSS configured for the second CSI RS configuration, and / or the powerControlOffset / powerControlOffsetSS configured for the first CSI RS configuration is a subset of the powerControlOffset / powerControlOffsetSS configured for the second CSI RS configuration.

[0175] For example, the powerControlOffset / powerControlOffsetSS configured for the first CSI RS configuration is reduced compared to the powerControlOffset / powerControlOffsetSS configured for the second CSI RS configuration. dB, P1 is the number of ports configured for the first CSI RS configuration, and P2 is the number of ports configured for the second CSI RS configuration. The first CSI RS configuration is configured with a larger number of ports, and the second CSI RS configuration is configured with a smaller number of ports.

[0176] Aspect 4: First Signaling

[0177] In some embodiments, the UE receives a first signaling, which includes a CSI-RS configuration indication. The CSI-RS configuration indication includes at least one of the following: maximum port count indication, port count activation / deactivation indication, maximum port count indication, port count indication, port count list indication, base station status indication, aperiodic CSI-RS resource activation indication, aperiodic CSI measurement report activation indication, CSI measurement configuration indication, semi-persistent CSI-RS resource activation indication, CSI-RS resource indication, port count increment and / or discard indication.

[0178] In some embodiments, the port number increment indicates a change in the number of active ports. For example, if the current number of active ports is A and the port number increment is B, then the indicated port number is function(A, B), which can be addition or subtraction. In this embodiment, higher-layer signaling can configure one or more port number increments, and a first signaling is used to indicate one of the port number increments.

[0179] In some embodiments, a CSI-RS configuration indication associated with the number of ports indicates that the CSI-RS configuration implicitly or explicitly indicates the number of ports or a CSI-RS configured with the number of ports.

[0180] In some embodiments, the discard instruction instructs the UE to discard unsent CSI measurement reports. In some embodiments, the discard instruction instructs the UE to discard unsent CSI measurement reports and perform CSI measurements based on the currently valid CSI-RS. The reason for the discard instruction is that the gNB antenna may have changed and could affect the CSI measurements performed by the UE. CSI measurement reports generated before the gNB antenna change are incorrect and should be discarded.

[0181] In some embodiments, CSI measurement configuration (e.g., CSI-MeasConfig ) is used to configure the CSI-RS of the serving cell, the serving cell including CSI-MeasConfig Including the above CSI-MeasConfig Channel state information reports transmitted on the PUCCH of the serving cell, and those included in the... CSI-MeasConfig Channel state information reports received on the PUSCH triggered by DCI on the serving cell.

[0182] In some embodiments, the CSI measurement configuration indication indicates one or more CSI measurement configurations or one or more CSI measurement configuration IDs.

[0183] In some embodiments, the maximum port count indicator indicates the maximum number of ports used by the UE. In some embodiments, the maximum port count indicator may be indicated by an index. The maximum port count for the UE represents the number of ports the UE performs measurements and / or CSI measurement reporting based on a CSI-RS configuration configured with a number of ports less than or equal to the maximum port count. For example, the maximum port count indicator indicates 8 ports. The UE can measure and report CSI only based on a CSI-RS configuration with a number of ports less than or equal to 8 ports. In other words, a CSI-RS configuration configured with a number of ports greater than the indicated maximum port count is disabled / invalid.

[0184] In some embodiments, the port number list indicates one or more ports supported by the UE. The port number list for the UE signifies that the UE performs measurements and / or CSI measurement reporting based on a CSI-RS configuration configured with the same number of ports as the indicated one or more ports. In other words, a CSI-RS configuration configured with a number of ports other than the indicated one or more ports is disabled / invalid.

[0185] For example, if the port list is {1, 2, 4, 8}, then the CSI-RS configuration configured with ports 1, 2, 4, or 8 is enabled / valid, and the CSI-RS configuration configured with ports 12, 16, 24, or 32 is disabled / invalid.

[0186] In some embodiments, the maximum port indication indicates the maximum port used by the UE. CSI-RS can be transmitted via antenna ports 3000, 3001, ..., 3031. The maximum port used by the UE indicates that the UE performs measurements and / or CSI measurement reports based on CSI-RS transmitted via antenna ports less than or equal to the indicated maximum port.

[0187] In some embodiments, the port indication indicates a port for the UE. The port for the UE indicates that the UE performs measurements and / or CSI measurement reports based on CSI-RS transmitted via the same antenna port as the indicated port.

[0188] In some embodiments, CSI-RS indicates the CSI-RS configuration that is active for the UE. The UE can measure CSI based on the active CSI-RS configuration.

[0189] In some embodiments, the base station status indication indicates base station power saving information. For example, the base station may have multiple power saving states, each of which may be associated with a number of ports. If a base station status is indicated, a CSI-RS configuration configured with the corresponding number of ports is active / activated. In another example, if a base station status is indicated, a CSI-RS configuration configured with a number of ports not greater than the corresponding number of ports is active / activated.

[0190] In some embodiments, the activation of aperiodic CSI-RS resources indicates the triggering of aperiodic CSI-RS measurements and reports. In some embodiments, it may implicitly indicate the number of ports. For example, if the UE receives a DCI that triggers aperiodic CSI-RS resources, each triggered aperiodic CSI-RS resource is associated with a number of ports, and then a CSI-RS configuration or CSI measurement report configured with the same number of ports is activated / used. As another example, if the UE receives a DCI that triggers aperiodic CSI-RS resources, then a CSI-RS resource or CSI measurement report configured with a number of ports less than or equal to the number of ports triggered is activated / used.

[0191] In some embodiments, a semi-persistent CSI-RS resource activation indication can activate a semi-persistent CSI-RS resource. It can also implicitly indicate the number of ports. For example, if the UE receives a first signaling (e.g., MAC CE) to activate a semi-persistent CSI-RS resource, a CSI-RS configuration with the same number of ports as the activated CSI-RS can also be valid / activated. In another example, if the UE receives a first signaling (e.g., MAC CE) to activate a semi-persistent CSI-RS resource, a CSI-RS configuration with a smaller or the same number of ports can also be valid / activated.

[0192] In some embodiments, if the UE receives a first signaling (e.g., MACCE) to activate a semi-persistent CSI-RS resource, each semi-persistent CSI-RS resource is associated with a number of ports, and a CSI-RS configuration configured with the same or a smaller number of ports (which is a semi-persistent CSI-RS) can also be valid / activated.

[0193] In some embodiments, the first signaling is DCI (Downlink Control Information).

[0194] In some embodiments, the DCI is a group common DCI. A group common DCI means that the DCI carries information about one or more UEs. Fields in the DCI are used to indicate information about one or more UEs.

[0195] In some embodiments, the X-bit field in the group common DCI is used to indicate CSI-RS configuration information for one or more UEs. CSI-RS configuration information can be indicated by a bitmap or code points.

[0196] In some embodiments, CSI-RS configuration information is a port number activation / deactivation indication. Port number activation / deactivation is indicated by a bitmap. For example, each bit in a field indicates a port number activation / deactivation. "0" indicates that a port number is deactivated, and "1" indicates that a port number is activated. The bit and port number mapping can be configured via higher-layer signaling. (For example, three bits corresponding to port numbers 2, 4, and 8 respectively. "011" indicates that port numbers 2 and 4 are valid and port number 8 is invalid.) In some embodiments, port number activation or deactivation indicates that the CSI-RS configuration associated with the port number is activated or deactivated. In some embodiments, port number activation or deactivation indicates that the CSI measurement reporting configuration associated with the port number is activated or deactivated.

[0197] In some embodiments, CSI-RS configuration information is a port count list indication. The port count list indication is indicated by code points.

[0198] In some embodiments, the bit width of a field is determined based on higher-layer signaling.

[0199] For example, the bit width of a field is explicitly configured by higher-layer signaling.

[0200] For example, the bit width of the field is derived from higher-layer signaling. The bit width is determined based on the number of types of CSI-RS ports (K) configured by the UE. In some embodiments, the bit width is function(log2(K)), which rounds up, down, or to the nearest whole number. For example, if the UE is configured with four types of CSI-RS ports (port 1, port 2, port 8, port 16), the bit width is function(log2(4)), which rounds up, down, or to the nearest whole number. In some embodiments, the bit width is the same as the number of types of CSI-RS ports configured by the UE. Each bit indicates an activation / deactivation message for a corresponding type of CSI-RS port. For example, if the UE is configured with four types of CSI-RS ports (port 1, port 2, port 8, port 16), the bit width is 4, the first bit indicating the activation / deactivation message for a CSI-RS port configured with port 1, and so on.

[0201] For example, the bit width of a field is derived from higher-layer signaling. The bit width is determined based on the maximum number of ports configured for the CSI-RS UE.

[0202] For example, the bit width of a field is derived from higher-layer signaling. The bit width is determined based on the items (entries) configured in the port count list. In some embodiments, the bit width is function(log2(K)), which rounds up, down, or to the nearest whole number. K is the number of items (entries). For example, if the port count list is configured as {{8},{16},{4},{2}}, then the bit width is function(log2(4)).

[0203] In another example, the bit width of the field is derived from the UE capabilities. UE capabilities may indicate at least one of the following: the maximum number of CSI-RS ports supported by the UE, the types of ports supported by the UE, the maximum types of ports supported by the UE, the number of items in the configurable port list, and the bit width supported by the UE.

[0204] In some embodiments, the bit width is predefined.

[0205] In some embodiments, the position of the UE's field in the group common DCI is configured by higher-layer signaling.

[0206] In some embodiments, the DCI is a dedicated DCI. A dedicated DCI means that the DCI carries information about a UE.

[0207] Fields in a dedicated DCI are used to indicate information.

[0208] In some embodiments, the bit width of the fields in the dedicated DCI can be determined in a manner similar to the embodiments described above, and details in this regard will not be described here.

[0209] A dedicated DCI can be a scheduled DCI or a non-scheduled DCI. A scheduled DCI includes DL assignment or UL authorization. A non-scheduled DCI does not include scheduling information.

[0210] In some embodiments, a dedicated DCI includes a field indicating the triggering / activation of a CSI measurement report or CSI-RS, which implicitly indicates the number of ports configured for CSI-RS.

[0211] In some embodiments, DCI is a broadcast or multicast DCI.

[0212] Broadcast or multicast DCIs are scrambled using 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).

[0213] Fields in broadcast or multicast DCI are used to indicate CSI-RS configuration information.

[0214] In some embodiments, the bit width of a field in a broadcast or multicast DCI can be determined in a manner similar to the embodiments described above, and details in this regard will not be described herein.

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

[0216] In some embodiments, DCI uses at least one of the following RNTIs for scrambling: MCCH-RNTI, G-RNTI, and G-CS-RNTI.

[0217] In some embodiments, the DCI is a specific DCI. For example, a specific DCI is used only for CSI-RS configuration indication.

[0218] In some embodiments, the CSI-RS configuration indication indicated by the DCI can only be used for at least semi-persistent CSI-RS resources or non-periodic CSI-RS resources.

[0219] In some embodiments, the first signaling is MAC CE.

[0220] In some embodiments, the MAC CE is scheduled by the broadcast / multicast DCI.

[0221] Each field in MAC CE indicates the number of ports that are active or deactivated.

[0222] In some embodiments, the MAC CE is a semi-persistent CSI-RS / CSI-IM resource set that activates / deactivates the MAC CE.

[0223] In some embodiments, the MAC CE indicates CSI-RS configuration indications 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 3 ).

[0224] In some embodiments, the CSI-RS configuration indication indicated by the MAC CE may be a CSI-RS resource set activation / deactivation indication.

[0225] In another example, the MAC CE first indicates the serving cell ID, followed by a port activation / deactivation indication for each port in the serving cell.

[0226] In some embodiments, MAC CE includes at least one of the following:

[0227] - CSI-RS configuration indication (e.g., a list of ports or a maximum number of ports).

[0228] - A field that indicates whether the specified port number should be activated or deactivated. For example, the field is set to 1 to indicate activation, otherwise it indicates deactivation.

[0229] - Serving Cell ID, this field indicates the identity of the serving cell to which MAC CE is applied;

[0230] - BWP ID, this field indicates the DL BWP to which the MAC CE is applied; and / or

[0231] - Port list ID, which indicates the list of ports that should be activated or deactivated.

[0232] In some embodiments, the first signaling is an SIB (System Information Block).

[0233] 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.

[0234] Aspect 5: UE Behavior

[0235] In some embodiments, the UE may perform, measure, and / or send CSI measurement reports in accordance with RRC signaling and / or first signaling.

[0236] In some embodiments, the UE is configured with a CSI-RS configuration or CSI measurement reporting configuration associated with a list of port numbers. In some embodiments, if the UE does not receive a first signaling indicating CSI-RS configuration information (e.g., a port number indication), the UE performs measurements and / or CSI measurement 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 port number indication), if more than one port number is configured in the CSI-RS configuration, the UE uses the maximum port number to perform measurements and / or CSI measurement reporting based on the active CSI-RS configuration.

[0237] In some embodiments, the TCI state of a semi-persistent CSI-RS or aperiodic CSI-RS is indicated by a first signaling.

[0238] In some embodiments, the offset of the semi-persistent CSI-RS or aperiodic CSI-RS is indicated by a first signaling.

[0239] In some embodiments, the offset is indicated in the time-domain resource allocation field.

[0240] In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information, the indicated CSI-RS configuration information is applied / validated / activated at least after a time delay (also referred to as a time period in this disclosure).

[0241] In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information, 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 in this disclosure).

[0242] In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information, the UE reports CSI based on the indicated CSI-RS configuration information at least after a second time delay (also referred to herein as a second time period). In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information, the UE reports CSI based on the indicated CSI-RS configuration information at least after a second time delay following the receipt of a valid CSI-RS. In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information, the UE sends a CSI measurement report at least after a valid CSI-RS configuration resource is available.

[0243] In some embodiments, the first time delay may be less than or equal to the second time delay.

[0244] In some embodiments, 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), FR (frequency range) type, SCS, ACK, PUSCH processing time, CSI calculation time, PDSCH processing time, BWP handover delay, and higher-layer signaling. In some embodiments, the time delay described in this disclosure indicates a time period.

[0245] In some embodiments, the time delay / first time delay / second time delay is configured by higher-layer signaling.

[0246] 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.

[0247] In some embodiments, the time delay / first time delay / second time delay is at least associated with the SFN. For example, after the UE receives the first signaling in the SFN, the activated CSI-RS configuration or CSI measurement report configuration becomes effective from the first time slot in the SFN.

[0248] In some embodiments, the time delay / first time delay / second time delay is at least associated with the ACK. For example, the active CSI-RS configuration or CSI measurement report configuration is effective after the UE sends the ACK for the first signaling. In another example, the active CSI-RS configuration or CSI measurement report configuration is effective N symbols / slots / milliseconds / subframes after the UE sends the ACK for the first signaling.

[0249] In some embodiments, the time delay / first time delay / second time delay is associated with at least the BWP handover delay. For example, an active CSI-RS configuration or CSI measurement reporting configuration becomes effective after the BWP handover delay.

[0250] 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.

[0251] 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.

[0252] 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.

[0253] 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.

[0254] 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 of an "aperiodic" CSI-RS resource is greater than the first time delay of a "semi-persistent" CSI-RS resource, and the first time delay of a "semi-persistent" CSI-RS resource is greater than the first time delay of a "periodic" CSI-RS resource.

[0255] In some embodiments, the time delay / first time delay / second time delay are different for different time-domain behavior CSI measurement reports.

[0256] 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.

[0257] 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:

[0258] - Minimum SCS among all active BWPs

[0259] - The smaller SCS between the DL BWP in which the first signaling is received and the UL BWP in which the CSI measurement report is sent.

[0260] - 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 UL BWP where the CSI measurement report is sent.

[0261] - Predefined SCS,

[0262] - The SCS of the DL BWP in which the first signaling is received

[0263] - The SCS of the DL BWP in which the indicated CSI-RS resource is configured or in which CSI-RS is received.

[0264] - The CSI measurement report is sent to the UL BWP's SCS.

[0265] - Schedule the SCS of the cell, and / or

[0266] - The SCS of the scheduled cell.

[0267] In some embodiments, if the UE receives a first signaling indicating a CSI-RS configuration information indication during a time delay / first time delay / second time delay, the UE will not measure CSI-RS that will not be activated after the time delay / first time delay / second time delay, which is determined according to the CSI-RS configuration information indication.

[0268] In some embodiments, if the UE receives a first signaling indicating a CSI-RS configuration information indication during a time delay / first time delay / second time delay, then 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, then the UE will not report the CSI.

[0269] In some embodiments, if the UE receives a first signaling instruction indicating a discard instruction, the UE will discard the CSI measurement report generated before the first signaling instruction, or the UE will not send the CSI measurement report generated before the first signaling instruction.

[0270] In some embodiments, if the UE receives a first signaling indicating CSI-RS configuration information, it can activate the activated / valid CSI-RS configuration 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 scheduling 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.

[0271] In some embodiments, the UE receives a first signaling indicating CSI-RS configuration information, whereby the CSI-RS configuration information is a port number list indication, a port number activation / deactivation indication, or a port number indication. If the indicated CSI-RS configuration information includes a number of ports that the UE has not configured, the UE ignores the corresponding indication.

[0272] For one example, the UE is configured with CSI-RS for the number of ports {0, 2}. If the UE receives a first signaling indicating that the number of ports {8} are active, the UE ignores the indication.

[0273] In another example, the UE is configured with CSI-RS for the number of ports {0, 2}. If the UE receives a first signaling indicating the number of activated group ports {8}, the UE deactivates the number of ports {0, 2}.

[0274] In some embodiments, the UE receives a first signaling indicating CSI-RS configuration information, and the CSI-RS configuration information is a port number list indication, a port number activation / deactivation indication, or a port number indication. If the indicated CSI-RS configuration information includes a number of ports that the UE has not configured, the UE uses the baseline CSI-RS configuration.

[0275] In some embodiments, the baseline CSI-RS configuration is configured with a predefined number of ports, or with a CSI-RS configuration having only one number of ports, or if more than one number of ports are configured, with the maximum number of ports used, or a predefined CSI-RS configuration. In some embodiments, the predefined number of ports or the predefined CSI-RS configuration is configured by higher-layer signaling.

[0276] 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.

[0277] 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 measurement report configuration configured with resourcesForChannelMeasurement), interference measurement (CSI measurement report configuration configured with CSI-IM-ResourcesForInterference), rate matching (configured with ZP-CSI-RS-Resource), or intra-cell interference measurement (CSI measurement report 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.

[0278] 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 measurement report configurations configured with a second time-domain behavior. The time-domain behavior of the CSI measurement report configuration includes "aperiodic," "semiPersistentOnPUCCH," "semiPersistentOnPUSCH," or "periodic." For example, the second time-domain behavior includes at least "aperiodic."

[0279] In some embodiments, the CSI-RS configuration and the corresponding CSI measurement report configuration are activated respectively. In some embodiments, the CSI-RS configuration and the corresponding CSI measurement report configuration are activated together. For example, if the CSI-RS configuration is activated by the first signaling, the corresponding CSI measurement report configuration is implicitly activated. As another example, if the CSI measurement report configuration is activated by the first signaling, the corresponding CSI-RS configuration is implicitly activated.

[0280] Aspect 5: UE Capabilities

[0281] In some embodiments, the UE reports UE capabilities to the gNB. UE capabilities may include at least one of the following: whether it supports port number list indication, whether it supports configuring more than one port number in CSI-RS resources, whether it supports configuring different port numbers in the CSI-RS resource set used for channel measurement, the maximum supported number of ports, 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, and port types that can be reported at the same time or in the same time slot.

[0282] In some embodiments, UE capabilities are transmitted via MAC CE or BSR (Buffer Status Report) or CSI measurement report or SRS (Sound Reference Signal) or RRC signaling.

[0283] Aspect 6: UE Assistance Information

[0284] 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 number of ports, preferred list of ports, preferred maximum number of ports, preferred fallback to baseline CSI-RS, preferred power-saving state to switch to, preferred TCI (Transmission Configuration Indicator) state, and preferred beam indication.

[0285] 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 Measurement Report, SRS (Sound Reference Signal), or RRC signaling.

[0286] 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.

[0287] Aspect 7: Activation

[0288] In some embodiments, if an event occurs, a first signaling indication is enabled. In some embodiments, enabling a first signaling indication indicates that the gNB can send a first signaling to the UE. In some embodiments, enabling a first signaling indication indicates that the UE will monitor the first signaling. In some embodiments, enabling a first signaling indication indicates that the gNB can send a first signaling with a CSI-RS configuration indication to the UE. In some embodiments, enabling a first signaling indication indicates that the field is present.

[0289] In some embodiments, the event includes at least one of the following events.

[0290] RRC signaling is configured to enable the first signaling indicating the CSI-RS configuration.

[0291] CSI-RS resources associated with more than one port are configured.

[0292] The CSI-RS resource set used for channel measurements includes CSI-RS with different numbers of ports.

[0293] RRC signaling is enabled or configured, and this RRC signaling is enabled to configure more than one port for CSI-RS resources.

[0294] RRC signaling is enabled or configured when more than one port is configured in a CSI-RS resource set used for channel measurements.

[0295] Figure 4 This is a schematic diagram relating to a wireless terminal 40 according to an embodiment of the present disclosure. The wireless terminal 40 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 40 may include a processor 400 such as a microprocessor or application-specific integrated circuit (ASIC), a storage unit 410, and a communication unit 420. The storage unit 410 may be any data storage device storing program code 412 accessed and executed by the processor 400. Embodiments of the storage unit 410 include, but are not limited to, a subscriber identity module (SIM), read-only memory (ROM), flash memory, random access memory (RAM), hard disk, and optical data storage devices. The communication unit 420 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 400. In one embodiment, the communication unit 420 is connected via… Figure 4 At least one antenna 422 shown transmits and receives signals.

[0296] In one embodiment, storage unit 410 and program code 412 may be omitted, and processor 400 may include storage unit with stored program code.

[0297] The processor 400 can implement any of the steps in the exemplary embodiment on the wireless terminal 40, for example, by executing program code 412.

[0298] Communication unit 420 may be a transceiver. Alternatively or additionally, communication unit 420 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).

[0299] In some embodiments, the wireless terminal 40 can be used to perform the operations of the UE described above. In some embodiments, the processor 400 and the communication unit 420 cooperate to perform the operations described above. For example, the processor 400 performs the operations and sends or receives signals through the communication unit 420.

[0300] Figure 5 This diagram relates to a wireless network node 50 according to an embodiment of the present disclosure. The wireless network node 50 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 50 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 50 may include a processor 500 such as a microprocessor or ASIC, a storage unit 510, and a communication unit 520. The storage unit 510 may be any data storage device storing program code 512 accessed and executed by the processor 500. Examples of storage unit 510 include, but are not limited to, SIM, ROM, flash memory, RAM, hard disk, and optical data storage devices. Communication unit 520 may be a transceiver and is used to send and receive signals (e.g., messages or packets) based on the processing results of processor 500. In one example, communication unit 520 is connected via... Figure 5 At least one antenna 522 shown transmits and receives signals.

[0301] In one embodiment, the storage unit 510 and the program code 512 may be omitted. The processor 500 may include a storage unit containing the stored program code.

[0302] The processor 500 can implement any of the steps described in the example embodiment on the wireless network node 50, for example, via executable program code 512.

[0303] The communication unit 520 may be a transceiver. Alternatively or additionally, the communication unit 520 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).

[0304] In some embodiments, the wireless network node 50 can be used to perform the operations described above for the gNB or base station. In some embodiments, the processor 500 and the communication unit 520 cooperate to perform the above operations. For example, the processor 500 performs the operations and sends or receives signals through the communication unit 520.

[0305] According to some embodiments of this disclosure, a wireless communication method includes: receiving control signaling from a wireless communication node (e.g., the aforementioned UE) by a wireless communication terminal (e.g., the aforementioned gNB or base station), the control signaling including Channel State Information Reference Signal (CSI-RS) configuration information; receiving first signaling from the wireless communication node by the wireless communication terminal, the first signaling including a drop indication or a CSI-RS configuration indication associated with the number of ports (e.g., the aforementioned number of ports or the number of ports); and performing at least one of the following by the wireless communication terminal based on at least one of the CSI-RS configuration information or the CSI-RS configuration indication in the first signaling: transmitting a CSI-RS measurement or a Channel State Information (CSI) measurement report to the wireless communication node.

[0306] 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 Channel State Information Reference Signal (CSI-RS) configuration information; the wireless communication node sending first signaling to the wireless communication terminal, the first signaling including a drop indication or a CSI-RS configuration indication associated with a number of ports; and the wireless communication node receiving from the wireless communication terminal a Channel State Information (CSI) measurement report to the wireless communication node based on at least one of the following: the CSI-RS configuration information, or the CSI-RS configuration indication in the first signaling.

[0307] In one embodiment, the control signaling may be the aforementioned higher-level signaling that includes at least one of the above-mentioned CSI-RS configuration information, CSI measurement report configuration, and / or port number list.

[0308] In one embodiment, the association between CSI-RS configuration information and the number of ports may include the association between the configuration and the number of ports in the aforementioned CSI-RS configuration information.

[0309] In one embodiment, the association between CSI measurement report configuration and the number of ports may include the association between CSI measurement report configuration and the number of ports specified in the above embodiments.

[0310] In one embodiment, the CSI-RS configuration indication may include the indication or information in the first signaling described above.

[0311] The details of the wireless communication method can be determined by referring to the above embodiments, and will not be repeated here.

[0312] 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.

[0313] 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.

[0314] 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.

[0315] 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 conjunction 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.

[0316] 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.

[0317] Furthermore, those skilled in the art will understand that the various illustrative logic blocks, cells, 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 devices, or any combination thereof. Logic blocks, cells, 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.

[0318] 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.

[0319] 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.

[0320] 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 not indications of a strict logical or physical structure or organization.

[0321] 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 at least one of: channel state information reference signal (CSI-RS) configuration information, or a port number list comprising one or more port numbers or one or more sets of port numbers, wherein the one or more port numbers or one or more sets of port numbers are associated with a CSI-RS resource mapping, wherein the CSI-RS resource mapping comprises at least one of: a time domain resource, a frequency domain resource, a CDM group, or a power control offset for a predefined port number, and wherein at least one of a time domain resource, a frequency domain resource, a CDM group, or a power control offset for a first port number is determined according to at least one of the time domain resource, the frequency domain resource, the CDM group, or the power control offset for the predefined port number, wherein the predefined port number is a maximum port number in the port number list or a set of port numbers configured in the CSI-RS resource mapping, or the port number configured in the CSI-RS resource mapping; receiving, by the wireless communication terminal from the wireless communication node, first signaling comprising a dropping indication or a CSI-RS configuration indication associated with a port number; 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 CSI-RS configuration information or the CSI-RS configuration indication in the first signaling. 2.The method of Claim 1, wherein the control signaling comprises at least one of: radio resource control (RRC) signaling or medium access control control element (MAC CE) signaling. 3.The method of Claim 1 or 2, wherein the control signaling further comprises at least one of: a CSI measurement report configuration, or one or more CSI measurement configurations. 4.The method of Claim 3, wherein the one or more port numbers or one or more sets of port numbers are further associated with at least one of: the CSI-RS configuration information, the CSI measurement report configuration, a codebook configuration, or a power control offset adjustment value from a maximum port number. 5.The method of Claim 1, wherein the predefined port number is a maximum port number, and wherein at least one of a time domain resource, a frequency domain resource, a CDM group, or a power control offset for a first port number is determined according to at least one of the time domain resource, the frequency domain resource, the CDM group, or the power control offset for the maximum port number, wherein: the time domain resource and the frequency domain resource for the first port number are M entries of the time domain resource and the frequency domain resource for the maximum port number; or the time domain resource and the frequency domain resource for the first port number are the time domain resource and the frequency domain resource of M CDM groups for the maximum port number; or ​ ​ ​ ​ ​ ​ ​ ​ ​ The CDM groups for the first number of ports are the first M CDM groups for the maximum number of ports; and wherein M is equal to a value of the first number of ports divided by a number of CDM types. 6.The wireless communication method of claim 1, wherein the CSI-RS configuration information comprises a CSI-RS resource set, and the CSI-RS resource set comprises one or more CSI-RS resources configured with different numbers of ports. 7.The wireless communication method of claim 6, wherein the CSI-RS resource set is used for at least one of: channel measurement, interference measurement. 8.The wireless communication method of claim 6, wherein a CSI-RS resource comprises at least one of: time domain resource, frequency domain resource, CDM type, density, CDM group, or power control offset. 9.The wireless communication method of claim 6, wherein there is a hierarchical relationship between the CSI-RS resources. 10.The wireless communication method of claim 9, wherein at least one of: first time domain and frequency domain resources, first CDM group, or first density for a first CSI-RS resource of the CSI-RS resources corresponding to a first number of ports, is a subset of at least one of: second time domain and frequency domain resources, second CDM group, or second density for a second CSI-RS resource of the CSI-RS resources within the CSI-RS resource set corresponding to a second number of ports, and the first number of ports is less than the second number of ports. 11.The wireless communication method of claim 6, wherein first time domain and frequency domain resources for a CSI-RS resource of the CSI-RS resources corresponding to a maximum number of ports is a union of time domain and frequency domain resources for all of the CSI-RS resources within the CSI-RS resource set. 12.The wireless communication method of claim 6, wherein a power control offset for a first CSI-RS resource of the CSI-RS resources corresponding to a first number of ports is less than a power control offset for a second CSI-RS resource of the CSI-RS resources within the CSI-RS resource set corresponding to a second number of ports, and the first number of ports is less than the second number of ports. 13.The wireless communication method of claim 1, wherein the wireless communication terminal configures the CSI-RS configuration information separately for different numbers of ports, in which the CSI-RS resources configured in the CSI-RS configuration information are configured with a same number of ports, wherein the CSI-RS configuration information is a CSI-RS resource setting or a CSI resource configuration. 14.The wireless communication method of claim 1, wherein if a CSI-RS resource mapping is associated with a list of numbers of ports configured with more than one number of ports or a set of numbers of ports configured with more than one number of ports, the wireless communication terminal performs CSI-RS measurement according to each valid number of ports in the list of numbers of ports or the set of numbers of ports. 15.The wireless communication method of claim 1, wherein the CSI-RS configuration indication comprises at least one of: a maximum port number indication, a port number activation or deactivation indication, a maximum port indication, a port number indication, a port number set indication, a base station state indication, an aperiodic CSI-RS resource activation indication, an aperiodic CSI measurement report activation indication, a CSI measurement configuration indication, a semi-persistent CSI-RS resource activation indication, a dropping indication, or a CSI-RS resource indication. 16.The wireless communication method of claim 1, wherein the first signaling comprises at least one of: a common downlink control information (DCI), a dedicated DCI, a broadcast DCI, a multicast DCI, a MAC CE, or a system information block (SIB). 17.The wireless communication method of claim 16, wherein the first signaling comprises an indication field for one or more user equipments (UEs). 18.The wireless communication method of claim 17, wherein the indication field comprises a bitmap or a codepoint, and at least one of a bit width or a location of the indication field is determined according to at least one of: a higher layer signaling or a predetermined value. 19.The wireless communication method of claim 16, wherein the CSI-RS configuration indication in the common DCI, the dedicated DCI, the broadcast DCI, or the multicast DCI is for at least one of: a semi-persistent CSI-RS resource or an aperiodic CSI-RS resource. 20.The wireless communication method of claim 16, wherein the dedicated DCI comprises a field indicating a triggering or activation of the CSI measurement report or a CSI-RS resource, and a port number for the CSI-RS resource corresponding to the CSI measurement report or a port number for the CSI-RS resource is implicitly indicated by the field. 21.The wireless communication method of claim 16, wherein the MAC CE comprises at least one of: the CSI-RS configuration indication, a field indicating an activation or deactivation of a port number or a port number set, a serving cell identifier (ID), a bandwidth part (BWP) ID, or a port number list ID. 22.The wireless communication method of claim 1, wherein the wireless communication terminal performs at least one of: applying, taking effect or activating the CSI-RS configuration information after a time period relative to receiving the first signaling; dropping the CSI measurement report generated before the first signaling; performing the CSI-RS measurement after a first time period relative to receiving the first signaling; performing the transmission of the CSI measurement report after a second time period relative to receiving the valid CSI-RS; or performing the transmission of the CSI measurement report after a second time period relative to receiving the first signaling or the valid CSI-RS configuration. 23.The wireless communication method of claim 22, wherein at least one of the time period, the first time period, or the second time period is associated with at least one of a predefined value, a time domain behavior, a UE capability, a system frame number (SFN), a subcarrier spacing (SCS), an acknowledgement (ACK), a physical uplink shared channel (PUSCH) preparation processing time, a CSI computation time, a frequency range (FR) type, a bandwidth part (BWP) switching delay, a higher layer signaling, or a physical downlink shared channel (PDSCH) processing time. 24.The wireless communication method of claim 22, wherein at least one of the time period, the first time period, or the second time period is predetermined, or is associated with a time domain behavior of a CSI-RS resource or a time domain behavior of the CSI measurement report. 25.The wireless communication method of claim 22, wherein during at least one of the time period, the first time period, or the second time period, the wireless communication terminal does not perform CSI-RS measurement for a CSI-RS configuration that is not applied, effective, or activated after the time period. 26.The wireless communication method of claim 22, wherein during at least one of the time period, the first time period, or the second time period, the wireless communication terminal does not transmit a CSI measurement report based on a CSI-RS configuration that is not activated after the time period, or a CSI measurement report configuration that is not activated after the time period. 27.The wireless communication method of claim 26, wherein the CSI-RS configuration and the CSI measurement report configuration are activated correspondingly. 28.The wireless communication method of claim 1, wherein when the CSI-RS configuration indicates a number of ports that is not configured to the wireless communication terminal, the wireless communication terminal ignores the CSI-RS configuration indication, or performs the transmission of the CSI measurement report based on a baseline CSI-RS configuration. 29.The wireless communication method of claim 28, wherein the baseline CSI-RS configuration is associated with a predetermined number of ports or a maximum number of ports. 30.The wireless communication method of claim 1, wherein when the CSI-RS configuration indicates for at least one of an aperiodic CSI measurement report activation indication, a semi-persistent CSI-RS resource activation indication, or a periodic CSI-RS resource indication, the CSI-RS configuration indication is valid. 31.The wireless communication method of claim 1, wherein when the CSI-RS configuration indicates for a CSI-RS resource for at least one of channel measurement, interference measurement, rate matching, or intra-cell interference measurement, the CSI-RS configuration indication is valid. 32.The wireless communication method of claim 1, wherein the CSI-RS configuration indicates validity when the CSI-RS configuration indicates at least one of: an aperiodic CSI measurement report, a semi-persistent CSI measurement report, or a periodic CSI measurement report. 33.The wireless communication method of claim 1, wherein the wireless communication terminal transmits to the wireless communication node at least one of: whether the wireless communication terminal supports a port number list indication, whether the wireless communication terminal supports being configured with more than one port number in a CSI-RS resource, whether the wireless communication terminal supports CSI-RS configuration indication by DCI, whether the wireless communication terminal supports CSI-RS configuration indication by MAC CE, whether the wireless communication terminal supports CSI-RS configuration indication, whether the wireless communication terminal supports being configured with different port numbers in a CSI-RS resource set used for channel measurement, a maximum supported number of port numbers, or a number of port number types that can be reported at a same time or a same slot. 34.The wireless communication method of claim 1, wherein the wireless communication terminal transmits to the wireless communication node at least one of: a preferred port number, a preferred port number list, a preferred maximum port number, a preference to fall back to a baseline CSI-RS configuration, a preference to switch to a power saving state, a preference of transmission configuration indicator (TCI) states, a preference of beam indication. 35.The wireless communication method of claim 1, wherein the first signaling is enabled when at least one of the following events occurs: radio resource control (RRC) signaling is configured to enable the first signaling to indicate the CSI-RS configuration; a CSI-RS resource associated with more than one port number is configured; a CSI-RS resource set used for channel measurement includes CSI-RSs with different port numbers; RRC signaling is enabled to configure more than one port number for a CSI-RS resource; or RRC signaling is enabled to configure more than one port number for channel measurement within a CSI-RS resource set. 36.The wireless communication method of claim 1, wherein the first signaling is enabled includes at least one of: the wireless communication node is capable of transmitting the first signaling to the wireless communication terminal; the wireless communication node is capable of transmitting the first signaling with CSI-RS configuration indication to the wireless communication terminal; the wireless communication terminal monitors the first signaling; or there is an indication field in the first signaling indicating activation or deactivation of one or more port numbers. 37.The wireless communication method of claim 1, wherein performing the CSI-RS measurement or the transmission of the CSI measurement report to the wireless communication node includes at least one of: the wireless communication terminal does not measure CSI based on a deactivated CSI-RS configuration; or the wireless communication terminal does not report CSI based on a deactivated CSI-RS configuration. if the CSI measurement report is not associated with a valid or activated CSI-RS configuration, the wireless communication terminal does not send the CSI measurement report; the wireless communication terminal does not expect to receive signaling for triggering a trigger state associated with an invalid or deactivated CSI-RS configuration; or the wireless communication terminal does not expect to receive signaling for triggering a trigger state associated with an invalid or deactivated CSI measurement report configuration; wherein the valid, activated, invalid, or deactivated CSI-RS configuration or CSI measurement report configuration is determined based on at least one of: the CSI-RS configuration information or the CSI-RS configuration indication in the first signaling.

38. A wireless communication method, comprising: sending, by a wireless communication node to a wireless communication terminal, control signaling comprising at least one of: channel state information reference signal (CSI-RS) configuration information or a port number list comprising one or more port numbers or one or more sets of port numbers, wherein the one or more port numbers or one or more sets of port numbers are associated with a CSI-RS resource mapping, wherein the CSI-RS resource mapping comprises at least one of: a time domain resource, a frequency domain resource, a CDM group, or a power control offset for a predefined port number, and wherein at least one of a time domain resource, a frequency domain resource, a CDM group, or a power control offset for a first port number is determined according to at least one of the time domain resource, the frequency domain resource, the CDM group, or the power control offset for the predefined port number, wherein the predefined port number is a maximum port number in the port number list or a set of port numbers configured in the CSI-RS resource mapping, or the port number configured in the CSI-RS resource mapping; sending, by the wireless communication node to the wireless communication terminal, first signaling comprising a drop indication or a CSI-RS configuration indication associated with a port number; 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 CSI-RS configuration information or the CSI-RS configuration indication in the first signaling.

39. The wireless communication method of claim 38, wherein the control signaling comprises at least one of: radio resource control (RRC) signaling or medium access control control element (MAC CE) signaling.

40. The wireless communication method of claim 38 or 39, wherein the control signaling further comprises at least one of: a CSI measurement report configuration or one or more CSI measurement configurations.

41. The wireless communication method of claim 40, wherein the one or more port numbers or one or more sets of port numbers are further associated with at least one of: the CSI-RS configuration information, the CSI measurement report configuration, a codebook configuration, or a power control offset adjustment value from a maximum port number. 42.The wireless communication method of claim 38, wherein the predefined number of ports is a maximum number of ports, and time domain resources, frequency domain resources, CDM groups, or power control offsets for a first number of ports are determined according to at least one of: the time domain resources, the frequency domain resources, the CDM groups, or the power control offsets for the maximum number of ports, wherein: the time domain resources and the frequency domain resources for the first number of ports are M entries of the time domain resources and the frequency domain resources for the maximum number of ports; or the time domain resources and the frequency domain resources for the first number of ports are the time domain resources and the frequency domain resources of M CDM groups for the maximum number of ports; or the CDM groups for the first number of ports are the first M CDM groups for the maximum number of ports; and wherein M is equal to a value of the first number of ports divided by a number of CDM types. 43.The wireless communication method of claim 38, wherein the CSI-RS configuration information comprises a CSI-RS resource set, and the CSI-RS resource set comprises one or more CSI-RS resources configured with different numbers of ports. 44.The wireless communication method of claim 43, wherein the CSI-RS resource set is used for at least one of: channel measurement, interference measurement. 45.The wireless communication method of claim 43, wherein a CSI-RS resource comprises at least one of: time domain resources, frequency domain resources, CDM type, density, CDM group, or power control offset. 46.The wireless communication method of claim 43, wherein there is a hierarchical relationship between the CSI-RS resources. 47.The wireless communication method of claim 46, wherein at least one of: first time domain and frequency domain resources, first CDM group, or first density for a first CSI-RS resource of the CSI-RS resources corresponding to a first number of ports, is a subset of at least one of: second time domain and frequency domain resources, second CDM group, or second density for a second CSI-RS resource of the CSI-RS resources within the CSI-RS resource set corresponding to a second number of ports, and the first number of ports is less than the second number of ports. 48.The wireless communication method of claim 43, wherein first time domain and frequency domain resources for a CSI-RS resource of the CSI-RS resources corresponding to a maximum number of ports is a union of a set of time domain and frequency domain resources for all the CSI-RS resources within the CSI-RS resource set. 49.The wireless communication method of claim 43, wherein a power control offset for a first CSI-RS resource of the CSI-RS resources corresponding to a first number of ports is less than a power control offset for a second CSI-RS resource of the CSI-RS resources within the CSI-RS resource set corresponding to a second number of ports, and the first number of ports is less than the second number of ports. ​ ​ ​ ​ ​ ​ 50. The wireless communication method of claim 38, wherein the CSI-RS configuration indication comprises at least one of: a maximum port number indication, a port number activation or deactivation indication, a maximum port indication, a port number indication, a port number set indication, a base station state indication, an aperiodic CSI-RS resource activation indication, an aperiodic CSI measurement report activation indication, a dropping indication, a CSI measurement configuration indication, a semi-persistent CSI-RS resource activation indication, or a CSI-RS resource indication.

51. The wireless communication method of claim 38, wherein the first signaling comprises at least one of: a common downlink control information (DCI), a dedicated DCI, a broadcast DCI, a multicast DCI, a MAC CE, or a system information block (SIB).

52. The wireless communication method of claim 51, wherein the first signaling comprises an indication field for one or more user equipments (UEs).

53. The wireless communication method of claim 52, wherein the indication field comprises a bitmap or a codepoint, and at least one of a bit width or a location of the indication field is determined according to at least one of: a higher layer signaling or a predetermined value.

54. The wireless communication method of claim 51, wherein the CSI-RS configuration indication in the common DCI, the dedicated DCI, the broadcast DCI, or the multicast DCI is for at least one of: a semi-persistent CSI-RS resource or an aperiodic CSI-RS resource.

55. The wireless communication method of claim 51, wherein the dedicated DCI comprises a field indicating a triggering or activation of the CSI measurement report or a CSI-RS resource, and a port number of the CSI-RS resource corresponding to the CSI measurement report or a port number for the CSI-RS resource is implicitly indicated by the field.

56. The wireless communication method of claim 51, wherein the MAC CE comprises at least one of: the CSI-RS configuration indication, a field indicating an activation or deactivation of a port number or a port number set, a serving cell identifier (ID), a bandwidth part (BWP) ID, or a port number list ID.

57. The wireless communication method of claim 38, wherein the CSI-RS configuration indication is valid when the CSI-RS configuration indication is for at least one of: an aperiodic CSI measurement report activation indication, a semi-persistent CSI-RS resource activation indication, or a periodic CSI-RS resource indication.

58. The wireless communication method of claim 38, wherein the CSI-RS configuration indication is valid when the CSI-RS configuration indication is for a CSI-RS resource for at least one of: channel measurement, interference measurement, rate matching, or intra-cell interference measurement. 59.The wireless communication method of claim 38, wherein the CSI-RS configuration indicates valid when the CSI-RS configuration indicates for at least one of: an aperiodic CSI measurement report, a semi-persistent CSI measurement report, or a periodic CSI measurement report. 60.The wireless communication method of claim 38, wherein the wireless communication node receives from the wireless communication terminal at least one of: whether the wireless communication terminal supports a port number list indication, whether the wireless communication terminal supports being configured with more than one port number in a CSI-RS resource, whether the wireless communication terminal supports CSI-RS configuration indication by DCI, whether the wireless communication terminal supports CSI-RS configuration indication by MAC CE, whether the wireless communication terminal supports CSI-RS configuration indication, whether the wireless communication terminal supports being configured with different port numbers in a CSI-RS resource set used for channel measurement, a maximum supported number of port numbers, or a number of port number types that can be reported at the same time or in the same slot. 61.The wireless communication method of claim 38, wherein the wireless communication node receives from the wireless communication terminal at least one of: a preferred port number, a list of preferred port numbers, a preferred maximum port number, a preference to fall back to a baseline CSI-RS configuration, a preference to switch to a power saving state, a preference for transmission configuration indicator (TCI) states, a preference for beam indication. 62.The wireless communication method of claim 38, wherein the first signaling is enabled when at least one of the following events occurs: radio resource control (RRC) signaling is configured to enable the first signaling to indicate the CSI-RS configuration; a CSI-RS resource associated with more than one port number is configured; a CSI-RS resource set used for channel measurement includes CSI-RSs with different port numbers; RRC signaling is enabled to configure more than one port number for a CSI-RS resource; or RRC signaling is enabled to configure more than one port number for channel measurement within a CSI-RS resource set. 63.The wireless communication method of claim 38, wherein the first signaling is enabled includes at least one of: the wireless communication node is capable of sending the first signaling to the wireless communication terminal; the wireless communication node is capable of sending the first signaling with CSI-RS configuration indication to the wireless communication terminal; the wireless communication terminal monitors the first signaling; or there is an indication field in the first signaling indicating activation or deactivation of one or more port numbers. 64.A wireless communication terminal comprising: a communication unit; and a processor configured to: ​ receiving control signaling from a wireless communication node, the control signaling comprising at least one of: channel state information reference signal, CSI-RS, configuration information, or a port number list comprising one or more port numbers or one or more sets of port numbers, wherein the one or more port numbers or one or more sets of port numbers are associated with a CSI-RS resource mapping, wherein the CSI-RS resource mapping comprises at least one of: a time domain resource, a frequency domain resource, a CDM group, or a power control offset for a predefined port number, and wherein at least one of a time domain resource, a frequency domain resource, a CDM group, or a power control offset for a first port number is determined according to at least one of the time domain resource, the frequency domain resource, the CDM group, or the power control offset for the predefined port number, wherein the predefined port number is a maximum port number in the port number list or a set of port numbers configured in the CSI-RS resource mapping, or is the port number configured in the CSI-RS resource mapping; receiving first signaling from the wireless communication node, the first signaling comprising a dropping indication or a CSI-RS configuration indication associated with a port number; and performing 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 CSI-RS configuration information or the CSI-RS configuration indication in the first signaling.

65. The wireless communication terminal of claim 64, wherein the processor is further configured to perform the wireless communication method of any one of claims 2-37.

66. A wireless communication node, comprising: a communication unit; and a processor configured to: transmit control signaling to a wireless communication terminal, the control signaling comprising at least one of: channel state information reference signal, CSI-RS, configuration information, or a port number list comprising one or more port numbers or one or more sets of port numbers, wherein the one or more port numbers or one or more sets of port numbers are associated with a CSI-RS resource mapping, wherein the CSI-RS resource mapping comprises at least one of: a time domain resource, a frequency domain resource, a CDM group, or a power control offset for a predefined port number, and wherein at least one of a time domain resource, a frequency domain resource, a CDM group, or a power control offset for a first port number is determined according to at least one of the time domain resource, the frequency domain resource, the CDM group, or the power control offset for the predefined port number, wherein the predefined port number is a maximum port number in the port number list or a set of port numbers configured in the CSI-RS resource mapping, or is the port number configured in the CSI-RS resource mapping; transmit first signaling to the wireless communication terminal, the first signaling comprising a dropping indication or a CSI-RS configuration indication associated with a port number; and From the wireless communication terminal, receive a Channel State Information, CSI, measurement report to the wireless communication node based on at least one of: the CSI-RS configuration information or the CSI-RS configuration indication in the first signaling.

67. The wireless communication node of claim 66, wherein the processor is further configured to perform the wireless communication method of claims 39-63.

68. A computer program product comprising a computer readable program medium code stored thereon, which code, when executed by a processor, causes the processor to implement the wireless communication method of any of claims 1-63.

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