Control signaling method for channel state information reporting for network energy saving

Abstract

Methods and apparatuses enable configuring, transmitting, measuring, and reporting measurement of CSI-RS resources of channel measurement resources (CMRs) configured for either (or both) of: a CSI reference signal (CSI-RS) resource set with multiple resource groups, or multiple CSI-RS resource sets. A network entity (NE) transmits, and a UE receives, a channel state information (CSI) report configuration including at least one CSI sub-configuration and at least one CMR adapted to support CSI reporting using a CSI-RS resource set with multiple resource groups for non-coherent joint transmission (NCJT) or multiple CSI-RS resource sets for dynamic point selection (DPS). For example, each CSI sub-configuration can configure one or more port subset indicators, and / or one or more CSI-RS resource subset indicators, and / or one or more additional power offset indicators.

Description

Technical Field

[0001] This document generally describes methods and apparatus for operating in wireless communication systems, such as (but not limited to) those described in 5G standard documents, referred to as 3rd Generation Partnership Project (3GPP) communication systems. Background Technology

[0002] For Multiple-Input Multiple-Output (MIMO) systems, Channel State Information (CSI) provides network entities with crucial information for selecting digital precoders for User Equipment (UE). Typically, the network entity (NE) configures CSI reporting via Radio Resource Control (RRC) signaling (e.g., CSI-ReportConfig), where the Channel State Information Reference Signal (CSI-RS) is used as a Channel Measurement Resource (CMR) for the UE to measure downlink channels. Additionally, the NE can configure Interference Measurement Resource (IMR) for the UE to measure interference.

[0003] Based on the configured associated CMR and IMR, the UE can identify the CSI, which may include at least one of the following: Rank Indicator (RI), Precoder Matrix Indicator (PMI), Channel Quality Indicator (CQI), or Layer Indicator (LI). RI and PMI are used to indicate the digital precoder, CQI is used to indicate the Signal-to-Interference-plus-Noise (SINR) state to assist network entities in determining the Modulation and Code Processing Scheme (MCS), and LI is used to identify the strongest layer of the reported precoder indicated by RI and PMI.

[0004] For multiple transmit and receive point (mTRP) operation, the NE can configure the UE to report CSI based on incoherent joint transmission (NCJT), where the UE assumes that the NE can transmit the Physical Data Sharing Channel (PDSCH) from more than one TRP without requiring antenna combinations across TRPs. The NE configures CSI for NCJT by configuring G (e.g., G=2) resource groups for the CSI-RS resource set configured as CMR, where different resource groups are for different TRPs.

[0005] Additionally, for mTRP operations, the NE can send PDSCH based on a Dynamic Point Selection (DPS) scheme, where the NE dynamically sends PDSCH from one of the TRPs. The NE can configure more than one aperiodic CSI-RS resource set configured as CMR and dynamically indicate the corresponding CSI-RS resource set configured as CMR using Downlink Control Information (DCI) to trigger aperiodic CSI reporting. The NE can also dynamically indicate the IMR set via the same DCI. In one example, in the DCI, the NE can indicate the CSI triggering state via the "CSI Request" field, with different values ​​of the DCI field corresponding to different RRC parameters for the aperiodic CSI triggering state. In each CSI triggering state, the NE can configure a CSI-RS resource set index for channel measurements and optionally configure a CSI-RS resource set index for interference measurements and / or a CSI-IM set index for interference measurements.

[0006] The NE can trigger the UE to provide multiple CSI reports corresponding to multiple CSI report configurations via the Physical Uplink Shared Channel (PUSCH) or the Long Physical Uplink Control Channel (PUCCH) (e.g., a PUCCH with more than 4 symbols). The UE can report the RI and CQI of the first codeword via CSI Part 1 and the PMI, LI, and CQI of the second codeword via CSI Part 2. The payload size of the PMI, LI, and CQI of the second codeword in CSI Part 2 is determined based on the RI reported in CSI Part 1. The UE transmits CSI Part 1 and CSI Part 2 via different resource elements on the PUSCH or the Long PUCCH.

[0007] For Network Energy Saving (NES), the NE can configure L (e.g., L>1) CSI sub-configurations in the CSI report configuration, and the NE can trigger the UE to report N (e.g., 1≤N≤L) CSIs corresponding to the N CSI sub-configurations. For Spatial Domain Network Energy Saving (SD-NES), the NE can configure the CSI report configuration based on one of the following types (Type 1 and Type 2). The current CSI report for NES can only configure one port subset indicator for Type 1 SD-NES, or one CSI resource subset indicator for Type 2 SD-NES. However, for mTRP CSI reporting, the NE may need to configure more than one resource group for Non-Coherent Joint Transport (NCJT) or more than one CSI-RS resource set for Dynamic Point Selection (DPS). In addition, the NE can send CSI-RS from different TRPs based on different numbers of antenna ports.

[0008] In this context, for mTRP CSI, a single port subset indicator is insufficient to indicate different port subsets for different TRPs in SD-NES. Similarly, a single CSI resource subset indicator is insufficient to select different CSI-RS resource groups or sets for different TRPs. Furthermore, different TRPs may apply different power offsets, so a single additional power offset cannot indicate the different power offsets for different TRPs, thus failing to support TRP-specific power domain network energy saving (PD-NES).

[0009] Therefore, when considering mTRP NES, it is necessary to provide some methods and systems to overcome the shortcomings associated with conventional CSI reporting. Summary of the Invention

[0010] To overcome the aforementioned problems, the method and system according to the embodiments are capable of configuring, transmitting, measuring, and reporting measurements of CSI-RS resources configured for CMRs of any (or both) of the following: a CSI Reference Signal (CSI-RS) resource set having multiple resource groups, or multiple CSI-RS resource sets. A network entity (NE) transmits a Channel State Information (CSI) report configuration, which the UE receives. This CSI report configuration includes at least one CSI sub-configuration and at least one Channel Measurement Resource (CMR), adapted to support CSI reporting using a CSI-RS resource set having multiple resource groups for Non-Coherent Joint Transmission (NCJT) or multiple CSI-RS resource sets for Dynamic Point Selection (DPS). For example, each CSI sub-configuration may configure one or more port subset indicators, and / or one or more CSI-RS resource subset indicators, and / or one or more additional power offset indicators.

[0011] In this way, CSI reporting is possible when the NE transmits CSI-RS from different TRPs, for example, using different numbers of antenna ports. In some cases, for example, depending on the UE's capabilities (either signaled to the NE by the UE or otherwise determined by the NE), the NE can avoid configuring a CSI reporting sub-configuration for the UE that includes multiple port subset indicators and / or multiple CSI-RS resource subset indicators and / or multiple additional power offsets. Attached Figure Description

[0012] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate one or more embodiments, and these embodiments are explained together with the description.

[0013] Figure 1 This is a signaling diagram illustrating a multi-transmit and receive point (mTRP) CSI reporting procedure for NES between the NE and the UE, according to an embodiment.

[0014] Figure 2 This is a block diagram of a wireless communication system in which user equipment (UE) and network equipment (NE) perform methods according to various embodiments.

[0015] Figure 3 This is a flowchart depicting the UE behavior of mTRP CSI reporting for NES according to an embodiment.

[0016] Figure 4 This is a flowchart depicting the NE behavior of mTRP CSI reporting for NES according to an embodiment.

[0017] Figure 5 An example of a TRP-specific NES parameter configuration with multiple resource groups for channel measurement is shown according to an embodiment.

[0018] Figure 6 An example of a TRP generic NES parameter configuration with multiple resource groups for channel measurement is shown according to an embodiment.

[0019] Figure 7 An example of a TRP-specific NES parameter configuration with multiple CSI-RS resource sets for channel measurement, according to an embodiment, is depicted.

[0020] Figure 8 An example of a TRP-specific CSI sub-configuration with multiple CSI-RS resource sets for channel measurement is shown according to an embodiment.

[0021] Figure 9 An example of a TRP generic NES parameter configuration with multiple CSI-RS resource sets for channel measurement is shown according to an embodiment. Detailed Implementation

[0022] The method and system according to the embodiments are capable of configuring, transmitting, measuring, and reporting measurements of CSI-RS resources configured for CMRs of any (or both) of the following: a CSI Reference Signal (CSI-RS) resource set having multiple resource groups, or multiple CSI-RS resource sets. A network entity (NE) transmits a Channel State Information (CSI) report configuration, which the UE receives. This CSI report configuration includes at least one CSI sub-configuration and at least one Channel Measurement Resource (CMR), adapted to support CSI reporting using a CSI-RS resource set having multiple resource groups for Non-Coherent Joint Transmission (NCJT) or multiple CSI-RS resource sets for Dynamic Point Selection (DPS). For example, each CSI sub-configuration may configure one or more port subset indicators, and / or one or more CSI-RS resource subset indicators, and / or one or more additional power offset indicators.

[0023] As will be discussed in more detail below, the UE sometimes collaborates with the RAN's NE to use the techniques described in this section to prepare modified CSI reports based on a CSI report configuration. This CSI report configuration includes multiple CSI sub-configurations with parameters that enable the CSI report to report information about CMRs associated with more than one resource group for Noncoherent Joint Transport (NCJT) or more than one CSI-RS resource set for Dynamic Point Selection (DPS). It should be noted that in one embodiment, a “CSI report” is the actual feedback provided by the UE regarding channel conditions, while a “CSI report configuration” encompasses the settings and parameters defining how CSI reports are generated and transmitted. The CSI report configuration allows the NE to control reporting strategies to meet various communication requirements and network optimization objectives. Multiple CSI report configurations can be used within the same system, and these configurations form a “CSI report scheme.”

[0024] Figure 1This is a signaling diagram illustrating a multi-transmit and receive point (mTRP) CSI reporting procedure for NES between the NE and UE when the CSI reporting configuration includes one or more CSI sub-configurations supporting mTRP NES, as discussed above. UE 110 may optionally report 102 UE capabilities indicating supported configurations for CSI reporting for mTRP operation with configured CSI sub-configurations. Note that dashed lines (or boxes) in the diagram indicate optional steps or functions. UE 110 may report at least one of the UE capabilities via signal or message 102: for example, whether UE 110 supports more than one resource group for configuring CSI-RS resources for channel measurements with one or more CSI reporting configurations, and / or whether UE 110 supports more than one CSI-RS resource set configured for channel measurements with one or more CSI reporting configurations. UE 110 can report UE capabilities for Type 1 SD-NES, Type 2 SD-NES, and PD-NES individually or jointly. In some implementations, NE 120 can receive UE capabilities from UE 110, from a core network entity (e.g., Access and Mobility Management Function (AMF), or another network entity.

[0025] Based on the received UE capabilities, NE 120 transmits at least one CSI report configuration, which includes at least one CSI sub-configuration and at least one Channel Measurement Resource (CMR). The at least one CMR includes at least one of the following: (a) a CSI Reference Signal (CSI-RS) resource set with multiple resource groups, or (b) multiple CSI-RS resource sets. The UE uses at least one CSI sub-configuration to configure at least one of the following: one or more port subset indicators; one or more CSI-RS resource subset indicators indicating CSI-RS resources of one or more CSI-RS resource sets in the configured CSI-RS resource set used for channel measurement; and / or one or more additional power offsets.

[0026] The NE 120 can optionally be configured with one or more IMR sets. The NE 120 can send 104 first control signaling via RRC signaling (e.g., RRCReconfiguration or CSI-ReportConfig). In some implementations, for semi-persistent or aperiodic CSI reports, the NE 120 can send a Media Access Control (MAC) Control Element (CE) or Downlink Control Information (DCI) to activate or trigger CSI reports for a subset of CSI subconfigurations.

[0027] Then, NE 120 sends the configured CSI-RS resource group or resource set (106) to UE 110 for CSI measurement and reporting. Upon receiving the CSI-RS resources, UE 110 calculates the CSI based on the received first control signaling and reports (108) a CSI report, which includes one or more CSI sub-reports corresponding to at least one triggered or configured CSI sub-configuration. The following is about... Figures 3 to 9 This describes embodiments of various mechanisms used for formatting CSI report configuration, CSI sub-configuration, CSI reports, and CSI sub-reports. However, before discussing various scenarios for configuring the UE to support CSI reporting for mTRP NES, regarding... Figure 2 Provide a brief description of the wireless communication system 200 that supports the CSI reporting scheme.

[0028] exist Figure 2 In this diagram, wireless communication system 200 includes a UE 110 and an NE 120 that communicate wirelessly via link 201 and are configured to achieve network power saving according to an embodiment (for simplicity, only one of each is shown, but those skilled in the art will understand that many such elements may exist). NE 120 can be any base station (BS), but more generally, the term "network entity" represents a wireless device with well-defined network functionality (e.g., the functionality of a BS is to connect the UE to the core network, including managing communications to and from the UE). NE 120 and UE 110 may include additional functions and interfaces omitted from the diagram for simplicity. Signaling link 201 generally represents both uplink signaling (from the UE to the NE) and downlink signaling (from the NE to the UE).

[0029] The NE 120 can provide gNB (i.e., 5G or 6G base station) functionality. The functionality of the NE 120 can be distributed across multiple entities (e.g., central unit CU, distributed unit DU, and radio unit RU). The NE 120 includes one or more antennas, an RF front-end 221, and a transceiver 222 for communicating with the UE 110 and other UEs and the NE. The antennas and RF front-end 221 of the NE 120 can be tuned to one or more frequency bands (e.g., subcarriers) defined, for example, by 3GPP Long Term Evolution (LTE), 5G New Radio (NR), and 6G communication standards and implemented by the transceiver 222.

[0030] NE 120 further includes a processor 223 and a computer-readable storage medium (CRSM) 224. The processor 223 may include a single-core or multi-core processor, and the CRSM 224 includes any suitable memory / storage device other than propagating signals. For example, the memory / storage device may include random access memory (RAM), static RAM (SRAM), dynamic RAM (DRAM), non-volatile RAM (NVRAM), read-only memory (ROM), and / or flash memory. The CRSM 224 stores device data 225, which includes network scheduling data, radio resource management data, applications, and / or operating systems, which can be executed by the processor 223 to enable wireless communication 201 with UE 110 and with other NEs and UEs.

[0031] CRSM 224 also stores a CSI configuration manager 226 and a CSI reporting scheme manager 227. The CSI configuration manager 226 causes the UE 110 to configure CSI reporting based on various factors discussed later. Due to the availability of CSI sub-configurations for a given CSI reporting configuration, and the ability to instruct the UE (using NCJT or DPS) to perform CSI reporting on the mTRP NES, CSI reporting schemes for satisfying these conditions are implemented in these embodiments. The CSI reporting scheme is managed by the CSI scheme manager 227 and includes multiple CSI reporting configurations. The CSI scheme manager 227 determines which CSI report (or modified report) the NE receives from the UE based on previous communications with the UE. In one application, the CSI scheme manager 227 can instruct the UE to use one or more available CSI reporting configurations from the available CSI reporting configurations.

[0032] NE 120 also includes an inter-base station interface 228 and a core network interface 229. The inter-base station interface 228 may be (e.g., in the case of handover) a standardized interface for exchanging user plane and control plane data with another NE, such as an Xn and / or X2 interface. The core network interface 229 enables the NE to exchange user plane data and control plane information with core network functions and / or entities.

[0033] UE 110 can be any user computing device, such as a smartphone. The UE includes an antenna connected to the radio frequency (RF) front-end 211 and a transceiver. The transceiver can be an LTE transceiver 212, a 5G NR transceiver 213, or another transceiver 214. Although Figure 2All three transceivers present in the UE are shown, but those skilled in the art will understand that more or fewer of these transceivers may be present. The antenna and RF front end 211 may be tuned to one or more frequency bands (e.g., subcarriers) defined by, for example, 3GPP LTE, 5G NR, and 6G communication standards and implemented by the corresponding transceivers. The UE 110 also includes one or more precoders 215, one or more processors 216, and a computer-readable storage medium (CRSM) 217. The processor 216 may be a single-core or multi-core processor, and the CRSM 217 includes any suitable memory / storage device other than the propagating signal. For example, the memory / storage device may include RAM, SRAM, DRAM, NVRAM, ROM, and / or flash memory. The CRSM 217 stores device data 218 necessary for the UE's communication. The CRSM 217 may also include a CSI configuration manager 219.

[0034] CSI configuration manager 219 is configured to generate a CSI report that may include information related to a subset of CSI sub-configurations but excludes information about the remaining CSI sub-configurations. In this embodiment or another embodiment, CSI configuration manager 219 may generate a CSI report that includes information on the latest measurements for a subset of CSI sub-configurations and outdated information for the remaining CSI sub-configurations. In yet another embodiment, CSI configuration manager 226 may generate a CSI report that includes outdated information for all CSI sub-configurations. CSI configuration manager 219 may also be configured to report CSI periodically, meaning that the UE provides updates to NE 120 at predefined intervals, or that CSI may be reported based on specific events or triggers, such as specific network events discussed above.

[0035] 5G NR supports different types of CSI, including wideband CSI, subband CSI, and CQI (Channel Quality Indicator) CSI. Wideband CSI provides information about the overall channel quality across the entire bandwidth, while subband CSI focuses on a specific frequency subband. CQI provides feedback on the expected signal quality. CSI reports can further include various parameters such as RI, PMI, etc. RI, which can be part of the CSI report, indicates the number of independent data streams that can be supported by the channel. RI helps the NE determine the appropriate MIMO transmission scheme to use. PMI indicates the optimal precoding matrix to be used for transmission from the NE to the UE. This helps with beamforming and spatial multiplexing to maximize signal quality.

[0036] Subband CSI reporting is a feature that allows for more granular monitoring of channel conditions within a smaller frequency range across the total available bandwidth. The total system bandwidth is divided into smaller subbands or frequency blocks. Subband CSI refers to the configuration and reporting of channel information for each of these subbands. Each subband typically covers a specific frequency range, and the CSI subconfiguration defines how the UE should measure and report channel conditions within these subbands. Subband CSI reporting may or may not be periodic. Subband CSI reporting can be set to occur at different reporting intervals or periodically. For example, depending on network requirements, the UE can be configured to provide subband CSI feedback more frequently for some subbands than for others. The size of each subband can vary depending on the number of resource blocks or frequency resources.

[0037] In this or another embodiment, CSI sub-configuration may refer to specific settings and parameters that determine how to measure and report channel state information for subbands across the entire system bandwidth. CSI sub-configuration may specify the size of each subband. CSI feedback for a subband may be reported periodically or based on events. When a significant change in channel conditions is detected within a particular subband, the NE may configure the UE to provide subband CSI updates. Subband CSI can influence resource allocation decisions. The NE120 can use subband CSI feedback to allocate resources more efficiently, especially when different subbands have different channel qualities. Therefore, in one embodiment, CSI sub-configuration may include more than one CSI-RS antenna port subset indicator, one or more CSI-RS resource subset indicators, and / or more than one additional power offset of the Physical Downlink Shared Channel (PDSCH) relative to the CSI-RS.

[0038] CSI configuration manager 219 is configured to implement multiple CSI configurations and, depending on existing conditions, select one CSI configuration from the CSI reporting schemes. It then instructs the UE's measurement unit to measure information specific to the selected CSI configuration or sub-configuration and instructs transceiver 213 to supply CSI reports to the NE based on the selected CSI reporting configuration or CSI reporting sub-configuration. Various CSI configurations and sub-configurations (and / or CSI reporting schemes) implemented in the UE and / or NE according to this embodiment will be discussed later.

[0039] Figure 3UE behavior 300 for mTRP CSI reporting for NES according to an embodiment is illustrated. Optionally, at step 302, UE 110 sends a signal or message informing the NE of its capability for CSI reporting for mTRP operation (with CSI sub-configuration configured). UE 110 receives 304 control signaling for configuring at least one CSI reporting configuration, which includes at least one CSI sub-configuration and at least one Channel Measurement Resource (CMR), which includes at least one of: (a) a CSI Reference Signal (CSI-RS) resource set having multiple resource groups, or (b) multiple CSI-RS resource sets. UE 110 receives 306 the configured CSI-RS resource associated with at least one CMR, and subsequently, based on the CSI-RS resource, sends 308 a CSI report for the triggered or periodic CSI reporting sub-configuration.

[0040] Figure 4 The NE behavior 400 for mTRP CSI reporting for an NES according to an embodiment is illustrated. Optionally, at step 402, the NE 120 receives a signal or message regarding the UE's capability for CSI reporting for mTRP operation (with a configured CSI sub-configuration). The NE 120 sends control signaling 404 for configuring a CSI reporting configuration, the at least one CSI reporting configuration including at least one CSI sub-configuration and at least one Channel Measurement Resource (CMR), the at least one CMR including at least one of: (a) a CSI Reference Signal (CSI-RS) resource set having multiple resource groups, or (b) multiple CSI-RS resource sets. The NE 120 sends 406 the configured CSI-RS resource associated with the at least one CMR, and subsequently receives 408 a CSI report based on the CSI-RS resource for a triggered or periodic CSI reporting sub-configuration.

[0041] Figure 5An example of a TRP-specific NES parameter configuration with multiple resource groups according to an embodiment is shown. The figure graphically depicts the relationship between a CSI report configuration 540 sent by NE 120 (and received by UE 110) and a corresponding CSI report 542 sent by UE 110 (and received by NE 120). The CSI report configuration 540 according to this embodiment includes identifiers of CSI-RS resources in multiple groups. In this example, there are two CSI-RS resource groups (e.g., G=2), namely, a first CSI-RS resource group 544 with CSI-RS resources 1…K1 and a second CSI-RS resource group 546 with CSI-RS resources K1+1…K1+K2, where the values ​​1…K and K1+1…K1+K2 are identifiers of specific CSI-RS resources configured as CMR. Although this example shows two CSI-RS resource groups, it should be understood that other embodiments may include more than two CSI-RS resource groups.

[0042] CSI report configuration 540 also includes multiple CSI report sub-configurations 1…L, four of which (548, 550, 552, 554) will be shown in more detail. For example, CSI report sub-configuration 548 includes two port subset indicators 556, two CSI-RS resource subset indicators 558, and two additional power offsets 560 between the PDSCH and CSI-RS. Each port subset indicator 556 corresponds to one of the resource groups 544, 546 of the CSI-RS resources used for channel measurements. Each CSI-RS resource subset indicator 558 corresponds to one of the resource groups 544, 546 of the CSI-RS resources used for channel measurements. Each additional power offset 560 corresponds to one of the resource groups 544, 546 of the CSI-RS resources used for channel measurements. It should be noted that although… Figure 5 (and subsequent) Figures 6 to 9 The first power offset value can be specified for each CSI resource listed in the CSI report configuration, but it is not shown in the diagram.

[0043] In some embodiments, the NE 120 can be configured with RRC parameters to jointly configure G port subset indicators. In some other implementations, the NE 120 can be configured with individual RRC parameters to individually configure G port subset indicators. In some implementations, the NE 120 can be configured with RRC parameters to jointly configure G CSI-RS resource subset indicators. In some other implementations, the NE 120 can be configured with individual RRC parameters to individually configure G CSI-RS resource subset indicators. In some implementations, the NE 120 can be configured with RRC parameters to jointly configure G additional power offsets. In some other implementations, the NE 120 can be configured with individual RRC parameters to individually configure G additional power offsets.

[0044] UE 110 calculates and reports CSI sub-reports for configured or triggered CSI sub-configurations based on port subset indicator 556, CSI-RS resource subset indicator 558, and / or additional power offsets 560 for the corresponding CSI-RS resource groups. For example, UE 110 uses measurements obtained based on CSI report sub-configuration 548 to calculate and report CSI sub-report 562. Similarly, CSI sub-report 564 corresponds to CSI report sub-configuration 550, and CSI sub-report 567 corresponds to CSI report sub-configuration 552. G port subset indicators 556, G CSI-RS resource subset indicators 558, and / or G additional power offsets 560 are associated one-to-one with CSI-RS resource groups 544 or 546 based on resource group indexes.

[0045] In some embodiments, NE 120 configures the same number of CSI-RS resources for each CSI-RS resource subset. NE 120 avoids configuring different numbers of CSI-RS resources for each CSI-RS resource subset. Therefore, UE 110 can expect NE 120 to configure the same number of CSI-RS resources for each CSI-RS resource subset. This is applicable when NE 120 configures the CSI-RS resource subset indicator 558 in the CSI report sub-configuration. In some other implementations, UE 110 determines the CSI-RS resource pair for the NCJT CSI based on the minimum number of CSI-RS resources of the GCSI-RS resource subset indicator.

[0046] Figure 5 An example is shown in which TRP-specific NES parameters are configured for CSI reports of multiple resource groups. Figure 6An embodiment is shown in which a common TRP parameter is specified for CSI reports of multiple resource groups. The CSI report configuration 640 according to this embodiment includes identifiers of CSI-RS resources in multiple groups. In this example, there are two CSI-RS resource groups (e.g., G=2), namely, a first CSI-RS resource group 644 with CSI-RS resources 1…K1 and a second CSI-RS resource group 646 with CSI-RS resources K1+1…K1+K2, where the values ​​1…K and K1+1…K1+K2 are identifiers of specific CSI-RS resources configured as CMR. Although this example shows two CSI-RS resource groups, it should be understood that other embodiments may include more than two CSI-RS resource groups.

[0047] CSI report configuration 640 also includes several CSI report sub-configurations 1…L, four of which (648, 650, 652, 654) will be shown in more detail. For example, CSI report sub-configuration 648 includes a general port subset indicator 656, a general CSI-RS resource subset indicator 658, and a general additional power offset 660 between the PDSCH and CSI-RS. These three parameters 656, 658, and 660 are identical for both resource groups 644 and 646. The general port subset indicator 656 indicates the general port subset for each resource group of CSI-RS resources used for channel measurements. The general CSI-RS resource subset indicator 658 indicates the general CSI resource subset from all resource groups. The general additional power offset 660 indicates the general additional power offset for each resource group of CSI-RS resources used for channel measurements.

[0048] UE 110 calculates and reports CSI sub-reports based on the general port subset indicator 656, the CSI-RS resource subset indicator 658, and / or the additional power offset 660, for configured or triggered CSI sub-configurations. For example, UE 110 uses measurements obtained based on CSI report sub-configuration 648 to calculate and report CSI sub-report 662. Similarly, CSI sub-report 664 corresponds to CSI report sub-configuration 650, and CSI sub-report 667 corresponds to CSI report sub-configuration 652.

[0049] In some implementations, NE 120 can configure the same number of ports for the G resource groups of CSI-RS resources used for channel measurements. NE 120 can avoid configuring different numbers of ports for the G resource groups of CSI-RS resources used for channel measurements. Therefore, UE 110 can expect NE 120 to configure the same number of ports for the G resource groups of CSI-RS resources used for channel measurements. This is applicable when NE 120 configures the generic port subset indicator 656 in the CSI report subconfiguration.

[0050] In some implementations, NE 120 configures the same number of CSI-RS resources for G CSI-RS resource groups using a general CSI-RS resource subset indicator 658. NE 120 avoids configuring different numbers of CSI-RS resources for the G CSI-RS resource groups using the same CSI-RS resource subset indicator. Therefore, UE 110 can expect NE 120 to configure the same number of CSI-RS resources for the G CSI-RS resource groups using the general CSI-RS resource subset indicator 658. This is applicable when NE 120 configures the general CSI-RS resource subset indicator 658 in the CSI report sub-configuration 648. In some other implementations, UE 110 determines the CSI-RS resource pair for the NCJT CSI based on the minimum number of CSI-RS resources from the G CSI-RS resource groups of the CSI resource subset.

[0051] Figure 5 and Figure 6 The embodiments demonstrate that CSI reporting for multiple CSI-RS resource groups can be supported using only TRP-specific parameters or only general TRIP parameters. However, according to other embodiments, one or more of the parameters may be TRP-specific, while one or more other parameters may be TRP-general. For example, in some implementations, the NE 120 configures the CSI reporting configuration to have G (e.g., G=2) resource groups of CSI-RS resources for channel measurements and one or more CSI reporting sub-configurations, wherein each CSI reporting sub-configuration may be configured with G sets of a first parameter set and one set of a second parameter set. The first parameter set may include at least one of a port subset indicator, a CSI-RS resource subset indicator, or an additional power offset. The second parameter set may include parameters other than those in the first parameter set.

[0052] Limitations on CSI report configurations and sub-configurations can also be considered. For example, in another embodiment, NE 120 avoids configuring the CSI report configuration to have more than one (e.g., two) resource groups of CSI-RS resources for channel measurements, and one or more CSI report sub-configurations. Instead, NE 120 configures the CSI report configuration to have only one resource group of CSI-RS resources for channel measurements, and it configures the CSI report configuration to include one or more CSI report sub-configurations. Therefore, UE 110 may not be expected to be configured to have a CSI report configuration with more than one (e.g., two) resource groups of CSI-RS resources for channel measurements, and one or more CSI report sub-configurations. In some implementations, NE 120 may configure the CSI report sub-configuration using at least one of the following parameters: port subset indicator, CSI resource subset indicator, or additional power offset between PDSCH and CSI-RS.

[0053] In some implementations, NE 120 avoids configuring the CSI reporting configuration to have more than one (e.g., two) resource groups for CSI-RS resources used for channel measurements, and one or more CSI reporting sub-configurations including port subset indicators. Therefore, UE 110 may not expect NE 120 to configure more than one (e.g., two) resource groups for CSI-RS resources used for channel measurements, and one or more CSI reporting sub-configurations including port subset indicators.

[0054] In some implementations, NE 120 avoids configuring the CSI reporting configuration to have more than one (e.g., two) resource groups for CSI-RS resources used for channel measurements, and one or more CSI reporting sub-configurations including CSI-RS resource subset indicators. Therefore, UE 110 may not expect NE 120 to configure more than one (e.g., two) resource groups for CSI-RS resources used for channel measurements, and one or more CSI reporting sub-configurations including CSI-RS resource subset indicators.

[0055] In some implementations, NE 120 avoids configuring the CSI reporting configuration to have more than one (e.g., two) resource groups for CSI-RS resources used for channel measurements, and one or more CSI reporting sub-configurations including additional power offsets. Therefore, UE 110 may not expect NE 120 to configure more than one (e.g., two) resource groups for CSI-RS resources used for channel measurements, and one or more CSI reporting sub-configurations including additional power offsets.

[0056] In the following text about Figures 7 to 9In other embodiments discussed, the NE 120 is configured to have multiple (e.g., two) CSI-RS resource sets for channel measurements, and one or more CSI reporting sub-configurations. In some implementations, the NE 120 may configure the CSI reporting sub-configuration using at least one of the following parameters: port subset indicator, CSI resource subset indicator, or additional power offset between the PDSCH and CSI-RS.

[0057] Figure 7 An example of a TRP-specific NES parameter configuration with multiple resource sets according to an embodiment is shown. The figure graphically depicts the relationship between a CSI report configuration 740 sent by NE 120 (and received by UE 110) and a corresponding CSI report 742 sent by UE 110 (and received by NE 120). The CSI report configuration 740 according to this embodiment includes identifiers for CSI-RS resources in multiple sets. In this example, there are two CSI-RS resource sets (e.g., G=2), namely, a first CSI-RS resource set 744 with CSI-RS resources 1…K1 and a second CSI-RS resource set 746 with CSI-RS resources x+1…x+K2, where the values ​​1…K and x+1…x+K2 are identifiers of specific CSI-RS resources configured as CMR. Although this example shows two CSI-RS resource sets, it should be understood that other embodiments may include more than two CSI-RS resource sets.

[0058] CSI report configuration 740 also includes multiple CSI report sub-configurations 1…L, four of which (748, 750, 752, 754) will be shown in more detail. For example, CSI report sub-configuration 748 includes two port subset indicators 756, two CSI-RS resource subset indicators 758, and two additional power offsets 760 between the PDSCH and CSI-RS. Each port subset indicator 756 corresponds to one of the resource sets 744, 746 of the CSI-RS resources used for channel measurements. Each CSI-RS resource subset indicator 758 corresponds to one of the resource sets 744, 746 of the CSI-RS resources used for channel measurements. Each additional power offset 760 corresponds to one of the resource sets 744, 746 of the CSI-RS resources used for channel measurements.

[0059] UE 110 calculates and reports a CSI report 742 and a corresponding CSI sub-report for a configured or triggered CSI sub-configuration and one of the selected resource sets 744 and 746. In this example, a CSI report for resource set 746 is selected based on a subset indicator, a CSI-RS resource subset indicator, and additional power offsets within each parameter set of the selected CSI-RS resource set 746, for example, as part of a CSI trigger for the CSI report. For example, UE 110 calculates and reports CSI sub-report 762 using measurements obtained based on CSI report sub-configuration 748 and more specifically, using parameters in CSI report sub-configuration 748 corresponding to resource set 746. Similarly, CSI sub-report 764 corresponds to CSI report sub-configuration 750, and CSI sub-report 767 corresponds to CSI report sub-configuration 752.

[0060] In some implementations, when the CSI-RS resource set is aperiodic CSI-RS, the NE 120 can configure S CSI-RS resource sets for channel measurements. In some implementations, the NE 120 can configure RRC parameters to jointly configure S port subset indicators. In some other implementations, the NE 120 can configure individual RRC parameters to individually configure S port subset indicators. In some implementations, the NE 120 can configure RRC parameters to jointly configure S CSI-RS resource subset indicators. In some other implementations, the NE 120 can configure individual RRC parameters to individually configure S CSI-RS resource subset indicators. In some implementations, the NE 120 can configure RRC parameters to jointly configure S additional power offsets. In some other implementations, the NE 120 can configure individual RRC parameters to individually configure S additional power offsets.

[0061] UE 110 calculates and reports CSI sub-reports for configured or triggered CSI sub-configurations based on subset indicators, CSI-RS resource subset indicators, and / or additional power offsets of the CSI-RS resource set. These subset indicators, CSI-RS resource subset indicators, and / or additional power offsets are configured by the aperiodic CSI triggering state indicated by the DCI that triggers the aperiodic CSI report. S port subset indicators, S CSI-RS resource subset indicators, and / or S additional power offsets are associated one-to-one with the CSI-RS resource set based on the resource set index.

[0062] exist Figure 7In one embodiment, each CSI reporting sub-configuration has multiple port subset indicators, multiple CSI-RS resource indicators, and / or multiple additional power offsets, the same number as the number of CSI-RS resource sets. According to another embodiment, each CSI-RS resource set may be associated with one or more sub-configurations, such as... Figure 8 As shown.

[0063] In this embodiment, the CSI reporting configuration 840 includes identifiers for CSI-RS resources in multiple sets. In this example, there are two CSI-RS resource sets (e.g., G=2): a first CSI-RS resource set 844 with CSI-RS resources 1…K1 and a second CSI-RS resource set 846 with CSI-RS resources x+1…x+K2, where the values ​​1…K and x+1…x+K2 are identifiers of specific CSI-RS resources configured for CMR. Although this example illustrates two CSI-RS resource sets, it should be understood that other embodiments may include more than two CSI-RS resource sets.

[0064] CSI reporting configuration 840 also includes multiple CSI reporting sub-configurations 1…L, four of which (848, 850, 852, 854) will be shown in more detail. Some of the sub-configurations (e.g., sub-configurations 848 and 850) are associated with a first CSI-RS resource set 844, while the others (e.g., sub-configurations 852 and 854) are associated with a second CSI-RS resource set 846. For example, each CSI reporting sub-configuration in CSI reporting sub-configurations 848 and 850 includes a port subset indicator, a CSI-RS resource subset indicator, and an additional power offset between the PDSCH and the CSI-RS. Each port subset indicator, CSI-RS resource subset indicator, and additional power offset in sub-configurations 848 and 850 corresponds to resource set 844 of CSI-RS resources used for channel measurements.

[0065] Similarly, each CSI reporting subconfiguration in CSI reporting subconfigurations 852 and 854 includes a port subset indicator, a CSI-RS resource subset indicator, and an additional power offset between the PDSCH and the CSI-RS. Each port subset indicator, CSI-RS resource subset indicator, and additional power offset in subconfigurations 852 and 854 corresponds to resource set 846 of CSI-RS resources used for channel measurements.

[0066] More specifically, and according to one embodiment, each sub-configuration includes at least one of the following: an associated CSI-RS resource set index for channel measurements, the CSI-RS resource set index indicating one of the configured CSI-RS resource sets for channel measurements associated with the CSI reporting sub-configuration; an associated CSI-RS resource set index for interference measurements, the CSI-RS resource set index indicating one of the configured CSI-RS resource sets for interference measurements associated with the CSI reporting sub-configuration; and an associated CSI-IM resource set index for interference measurements, the CSI-IM resource set index indicating C... The SI report subconfigures one of the configured CSI-IM resource sets associated with it for interference measurement; a port subset indicator indicating a general port subset of the associated CSI-RS resource set for channel measurement; a CSI-RS resource subset indicator indicating a CSI resource subset of the associated CSI-RS resource set for channel measurement and / or interference measurement; and an additional power offset indicating an additional power offset of the CSI-RS resources in the associated CSI-RS resource set for channel measurement and / or interference measurement.

[0067] UE 110 calculates and reports a CSI report 842 and a corresponding CSI sub-report for a configured or triggered CSI sub-configuration and one of the selected resource sets 844 and 846. In this example, the CSI report for resource set 844 is selected based on the subset indicator, the CSI-RS resource subset indicator, and additional power offsets within each parameter set of the selected CSI-RS resource set 844, for example, as part of the CSI triggering of the CSI report. For example, UE 110 uses measurements obtained based on CSI report sub-configuration 848 to calculate and report CSI sub-report 862. Similarly, CSI sub-report 864 corresponds to CSI report sub-configuration 850. It should be noted that sub-configurations 852 and 854 are not used in this example because they correspond to CSI-RS resource 846, which was not selected for measurement.

[0068] In some implementations, NE 120 and UE 110 may determine the associated CSI-RS resource set index for channel measurement, the associated CSI-RS resource set index for interference measurement, and / or the associated CSI-IM resource set index for interference measurement based on the CSI-associated report configuration information (e.g., CSI-AssociatedReportConfigInfo) configured in the CSI-triggered state (e.g., CSI-AperiodicTriggerState). The NE can configure a list of triggered CSI sub-configurations in the CSI-associated report configuration information (e.g., CSI-AssociatedReportConfigInfo) in the CSI trigger state (e.g., CSI-AperiodicTriggerState), and the NE120 can trigger CSI sub-configurations corresponding to the CSI-RS resource set used for channel measurements by indicating a specific CSI trigger state in the DCI.

[0069] In some other implementations, the NE 120 may configure a CSI report configuration ID (e.g., reportConfigId) in the CSI-associated report configuration information (e.g., CSI-AssociatedReportConfigInfo) during a CSI trigger state (e.g., CSI-AperiodicTriggerState), and the NE and UE will determine the triggered CSI sub-configuration as a CSI sub-configuration that is configured with the same associated CSI-RS resource set for channel measurement as the CSI-RS resource set for channel measurement configured by the CSI-RS resource set index for channel measurement (e.g., resourceForChannel).

[0070] Figure 7 and Figure 8 The embodiments illustrate TRP-specific parameters for CSI used in measuring and reporting mTRP scenarios. However, general TRP parameters can also be applied. For example, such as... Figure 9As shown, NE 120 configures CSI reporting configuration 940 to have S (e.g., S=2) CSI-RS resource sets 944 and 946 for channel measurements, and one or more CSI reporting sub-configurations 948, 950, 952 and 954, wherein each sub-configuration includes at least one of the following: a port subset indicator that indicates a general port subset of all configured or triggered CSI-RS resource sets for channel measurements; a CSI-RS resource subset indicator that indicates a subset of CSI resources in all configured or triggered CSI-RS resource sets; or an additional power offset that indicates a general additional power offset for all CSI-RS resources for channel measurements.

[0071] UE 110 calculates and reports a CSI report 942 and corresponding CSI sub-reports 962, 964, and 967 for a configured or triggered CSI sub-configuration and one of the resource sets selected from two resource sets 944 and 946. In this example, the CSI report for resource set 944 is selected based on the subset indicator, the CSI-RS resource subset indicator, and additional power offsets within each parameter set of the selected CSI-RS resource set 944, for example, as part of a CSI trigger for the CSI report. For example, UE 110 uses measurements obtained based on CSI report sub-configuration 948 to calculate and report CSI sub-report 962. Similarly, CSI sub-report 964 corresponds to CSI report sub-configuration 950, and CSI sub-report 967 corresponds to sub-configuration 952.

[0072] In some implementations, NE 120 can configure the same number of ports for the CSI-RS resource set used for channel measurements. NE 120 can avoid configuring different numbers of ports for the CSI-RS resource set used for channel measurements. Therefore, UE 110 can expect NE 120 to configure the same number of ports for the CSI-RS resource set used for channel measurements. This is applicable when NE 120 configures a port subset indicator in the CSI report subconfiguration.

[0073] In some implementations, NE 120 configures the same number of CSI-RS resources for the CSI-RS resource set used for channel measurements. NE 120 can avoid configuring different numbers of CSI-RS resources for the CSI-RS resource set used for channel measurements. Therefore, UE 110 can expect NE 120 to configure the same number of CSI-RS resources for the CSI-RS resource set used for channel measurements. This is applicable when NE 120 configures a CSI-RS resource subset indicator in the CSI report subconfiguration.

[0074] In some other implementations, UE 110 determines the subset of CSI-RS resources based on the number of CSI-RS resources in the triggered CSI-RS resource set. In one example, UE 110 may determine the subset of CSI-RS resources as the CSI-RS resource z in the triggered CSI-RS resource set (if (z+1)<=Ks), where z indicates the CSI-RS resource subset ID indicated by the CSI-RS resource subset indicator, and Ks indicates the number of CSI-RS resources in the triggered CSI-RS resource set.

[0075] Figures 7 to 9 The embodiments demonstrate that CSI reporting for multiple CSI-RS sets can be supported using only TRP-specific parameters or only general TRP parameters. However, according to other embodiments, one or more of the parameters may be TRP-specific, while one or more other parameters may be TRP-general. For example, in some implementations, the NE 120 configures the CSI reporting configuration to have S (e.g., S=2) CSI-RS resource sets for channel measurements, and one or more CSI reporting sub-configurations, wherein each CSI reporting sub-configuration may configure T sets from a first parameter set and one set from a second parameter set. The first parameter set may include at least one of a port subset indicator, a CSI-RS resource subset indicator, or an additional power offset. The second parameter set may include parameters other than those in the first parameter set.

[0076] Other embodiments may consider limitations on the CSI report configuration. For example, in another embodiment, NE 120 avoids configuring the CSI report configuration to have more than one (e.g., two) CSI-RS resource sets for channel measurements, and one or more CSI report sub-configurations. If the NE configures the CSI report configuration to include one or more CSI report sub-configurations, it configures the CSI report configuration to have only one CSI-RS resource set for channel measurements. Therefore, UE 110 may not be expected to be configured to have a CSI report configuration with more than one (e.g., two) CSI-RS resource sets for channel measurements, and one or more CSI report sub-configurations. Therefore, if one or more CSI report sub-configurations are configured in the CSI report configuration, UE 110 may be expected to be configured such that the CSI report configuration has one CSI-RS resource set for channel measurements. In some implementations, the NE may configure the CSI report sub-configuration using at least one of the following parameters: port subset indicator, CSI resource subset indicator, or additional power offset between the PDSCH and CSI-RS.

[0077] In some implementations, NE 120 avoids configuring the CSI reporting configuration to have more than one (e.g., two) CSI-RS resource sets for channel measurements, and one or more CSI reporting sub-configurations including port subset indicators. Therefore, UE 110 may not expect NE 120 to be configured with more than one (e.g., two) CSI-RS resource sets for channel measurements, and one or more CSI reporting sub-configurations including port subset indicators.

[0078] In some implementations, NE 120 avoids configuring the CSI reporting configuration to have more than one (e.g., two) CSI-RS resource sets for channel measurements, and one or more CSI reporting sub-configurations including CSI-RS resource subset indicators. Therefore, UE 110 may not expect NE 120 to be configured with more than one (e.g., two) CSI-RS resource sets for channel measurements, and one or more CSI reporting sub-configurations including CSI-RS resource subset indicators.

[0079] In some implementations, NE 120 avoids configuring the CSI reporting configuration to have more than one (e.g., two) CSI-RS resource sets for channel measurements, and one or more CSI reporting sub-configurations including additional power offsets. Therefore, UE 110 may not expect NE 120 to be configured with more than one (e.g., two) CSI-RS resource sets for channel measurements, and one or more CSI reporting sub-configurations including additional power offsets.

[0080] As an example, and not a limitation, the techniques described in this document support the following embodiments.

[0081] Example 1 – A wireless communication method performed by a user equipment (UE), the method comprising: receiving by the UE at least one channel state information (CSI) report configuration, the at least one CSI report configuration including at least one CSI sub-configuration and at least one channel measurement resource (CMR), the at least one CMR including at least one of: (a) a CSI reference signal (CSI-RS) resource set having multiple resource groups, or (b) multiple CSI-RS resource sets; receiving by the UE at least one CSI-RS resource associated with the at least one CMR; and transmitting by the UE a CSI report based on the at least one CSI-RS resource for the at least one CSI sub-configuration.

[0082] Example 2 – The method according to Example 1 further includes: the UE sending a UE capability signal indicating at least one of the following: whether the UE supports a CSI reporting configuration having at least one CSI sub-configuration for a CMR that includes a CSI-RS resource set having multiple resource groups; or whether the UE supports a CSI reporting configuration having at least one CSI sub-configuration for a CMR that includes a CSI-RS resource set having multiple resource groups.

[0083] Example 3 – According to the method described in Example 1, each CSI subconfiguration includes a set of parameters that includes at least one of the following: at least one port subset indicator, at least one CSI-RS resource subset indicator, or at least one additional power offset.

[0084] Example 4 – The method described in Example 3, wherein each parameter set is associated with at least one of: each of the plurality of resource groups; or each of the plurality of CSI-RS resource sets.

[0085] Example 5 – The method according to Example 3 or 4 further includes: the UE receiving a configuration of the association between each parameter set and at least one of each resource group or each CSI-RS resource set; wherein the association is based on at least one of: a resource group index, a CSI-RS resource set index, a parameter set index, a CSI subconfiguration identifier (ID) including the parameter set, or a triggered CSI subconfiguration ID.

[0086] Example 6 – The method described in Examples 3 to 5 further includes: the UE receiving downlink control information that triggers at least one CSI sub-configuration of the CSI report.

[0087] Example 7 -- The method described in Examples 3 to 6, wherein the parameter set is a general parameter set based on the plurality of resource groups or the plurality of CSI-RS resource sets.

[0088] Example 8 – The method described in Example 7 further includes receiving the configuration via Radio Resource Configuration (RRC) signaling, Media Access Control (MAC) control element (CE), or Downlink Control Information (DCI).

[0089] Example 9 – The method according to Examples 3 to 8 further includes sending a configured or triggered CSI report based on a set of parameters associated with a resource group for channel measurement and CSI-RS resource pairs from a subset of CSI-RS resources in each resource group.

[0090] Example 10 – The method described in Example 9 further includes: receiving the configuration of the same number of CSI-RS resources in a subset of CSI-RS resources for each resource group.

[0091] Example 11 -- The method described in Example 9, wherein the UE determines the number of CSI-RS resource pairs based on the minimum number of CSI-RS resources in the CSI-RS resource subset of the resource group.

[0092] Example 12 -- The method described in Examples 3 to 8, wherein the UE sends a configured or triggered CSI report sub-report based on the associated parameter set of the triggered CSI resource set for channel measurement and the CSI-RS resource set.

[0093] Example 13 -- The method described in Example 3, wherein the UE sends the CSI sub-report of the CSI report sub-configuration based on a common parameter set of the resource group of CSI-RS resources for channel measurement.

[0094] Example 14 -- The method described in Example 13, wherein the UE receives a configuration of the same number of ports in a resource group for channel measurement of CSI-RS resources.

[0095] Example 15 -- The method described in Example 3, wherein the UE sends the CSI sub-report of the CSI report sub-configuration based on a common parameter set of the CSI-RS resource set for channel measurement.

[0096] Example 16 -- The method described in Example 13, wherein the UE receives the configuration of the same number of ports of the CSI-RS resources in the configured CSI-RS resource set.

[0097] Example 17 -- The method described in Example 3, wherein the UE receives the configuration of the same number of CSI-RS resources in the configured CSI-RS resource set.

[0098] Example 18 -- The method described in Example 1, wherein the UE sends the CSI report in response to the DCI.

[0099] Example 19 -- The method described in Example 1, wherein the UE receives CSI-RS resources for channel measurement triggered by DCI.

[0100] Example 20 – A wireless communication method performed by a network entity (NE), the method comprising: transmitting by the NE at least one channel state information (CSI) report configuration, the at least one CSI report configuration including at least one CSI sub-configuration and at least one channel measurement resource (CMR), the at least one CMR including at least one of: (a) a CSI reference signal (CSI-RS) resource set having multiple resource groups, or (b) multiple CSI-RS resource sets; transmitting by the NE at least one CSI-RS resource associated with the at least one CMR; and receiving by the NE a CSI report based on the at least one CSI-RS resource for the at least one CSI sub-configuration.

[0101] Example 21 -- The method according to Example 20 further includes: the NE receiving a UE capability signal indicating at least one of the following: whether the UE supports a CSI reporting configuration having at least one CSI sub-configuration for a CMR including a CSI-RS resource set having multiple resource groups; or whether the UE supports a CSI reporting configuration having at least one CSI sub-configuration for a CMR including a CSI-RS resource set having multiple resource groups.

[0102] Example 22 -- The method according to Example 20, wherein each CSI subconfiguration includes a set of parameters including at least one of the following: at least one port subset indicator, at least one CSI-RS resource subset indicator, or at least one additional power offset.

[0103] Example 23 -- The method of claim 22, wherein each parameter set is associated with at least one of: each of the plurality of resource groups; or each of the plurality of CSI-RS resource sets.

[0104] Example 24 – The method according to Examples 22 to 23 further includes: the NE sending a configuration of the association between each parameter set and at least one of each resource group or each CSI-RS resource set; wherein the association is based on at least one of: a resource group index, a CSI-RS resource set index, a parameter set index, a CSI subconfiguration identifier (ID) including the parameter set, or a triggered CSI subconfiguration ID.

[0105] Example 25 – The method described in Examples 21 to 23 further includes: the NE sending downlink control information that triggers at least one CSI sub-configuration of the CSI report.

[0106] Example 26 -- The method described in Examples 22 to 25, wherein the parameter set is a general parameter set based on the plurality of resource groups or the plurality of CSI-RS resource sets.

[0107] Example 27 -- The method described in Example 26, wherein the NE transmits the configuration via Radio Resource Configuration (RRC) signaling, Media Access Control (MAC) Control Element (CE), or Downlink Control Information (DCI).

[0108] Example 28 -- The method according to Examples 22 to 27, wherein the NE receives configured or triggered CSI report sub-reports based on the associated parameter set of resource groups for channel measurements and CSI-RS resource pairs from CSI-RS resource subsets of each resource group.

[0109] Example 29 -- The method described in Example 28, wherein the NE sends the configuration of the same number of CSI-RS resources in the CSI-RS resource subset of each resource group.

[0110] Example 30 -- The method described in Example 28, wherein the NE determines the number of CSI-RS resource pairs based on the minimum number of CSI-RS resources in the CSI-RS resource subset of the resource group.

[0111] Example 31 -- The method according to Examples 22 to 30, wherein the NE receives a configured or triggered CSI report sub-report based on the associated parameter set of the triggered CSI resource set for channel measurement and the CSI-RS resource set.

[0112] Example 32 -- The method described in Example 25, wherein the NE receives the CSI sub-report of the CSI report sub-configuration based on a common parameter set of the resource group of CSI-RS resources for channel measurement.

[0113] Example 33 -- The method described in Example 32, wherein the NE transmits the configuration of the same number of ports of the resource group for CSI-RS resources used for channel measurement.

[0114] Example 34 -- The method described in Example 25, wherein the NE receives the CSI sub-report of the CSI report sub-configuration based on a common parameter set of the CSI-RS resource set for channel measurement.

[0115] Example 35 -- The method described in Example 34, wherein the NE sends the configuration of the same number of ports of the CSI-RS resources in the configured CSI-RS resource set.

[0116] Example 36 -- The method described in Example 34, wherein the NE sends the configuration of the same number of CSI-RS resources in the configured CSI-RS resource set.

[0117] Example 37 -- The method described in Example 20, wherein the NE triggers the CSI report via DCI.

[0118] Example 38 -- The method described in Example 20, wherein the NE triggers CSI-RS resources for channel measurements via DCI.

[0119] Example 39 -- The method described in Example 20, wherein the NE avoids configuring the CSI report sub-configuration, which includes at least one of the following: a port subset indicator; a CSI-RS resource subset indicator; or an additional power offset.

[0120] The embodiments described in this section are referenced to the accompanying drawings. The same reference numerals in different drawings identify the same or similar elements. The detailed description does indeed exclude other embodiments within the scope of the appended claims. The embodiments are not limited to the described configurations but can be extended to other arrangements.

[0121] Throughout this section, references to "one embodiment" or "embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment. Therefore, the phrases "in one embodiment" or "in an embodiment" appearing in various places throughout the specification do not necessarily all refer to the same embodiment. Furthermore, particular features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments.

[0122] The numerical adjectives “first,” “second,” and “third” do not imply any order (they are not ordinal numbers), but are markers used to distinguish individual instances of similar elements. Unless otherwise explicitly indicated, references to the singular (e.g., “a” or “a kind,” “the”) should include the plural.

[0123] Although features and elements of this embodiment are described in specific combinations in the embodiments, each feature or element may be used alone without other features and elements in the embodiments, or in various combinations with or without other features and elements disclosed herein. Methods or flowcharts may be implemented as computer programs, software, or firmware tangibly embodied in a computer-readable storage medium for execution by a specially programmed computer or processor.

Claims

1. A method (300) for wireless communication performed by a user equipment (UE) (110), the method comprising: The UE (110) receives (304) at least one Channel State Information (CSI) Report Configuration, the at least one CSI Report Configuration including at least one CSI Sub-Configuration and at least one Channel Measurement Resource (CMR), the at least one CMR including at least one of the following: (a) a CSI Reference Signal (CSI-RS) Resource Set having multiple resource groups, or (b) multiple CSI-RS Resource Sets; The UE (110) receives (306) at least one CSI-RS resource associated with the at least one CMR; as well as The UE (110) sends (308) a CSI report based on the at least one CSI-RS resource for the at least one CSI sub-configuration.

2. The method according to claim 1, further comprising: The UE sends a UE capability signal indicating at least one of the following: Does the UE support a CSI reporting configuration with at least one CSI sub-configuration for a CMR that includes a CSI-RS resource set with multiple resource groups? Does the UE support a CSI reporting configuration with at least one CSI sub-configuration for a CMR that includes multiple CSI-RS resource sets? 3. The method of claim 1, wherein each CSI subconfiguration includes a set of parameters, the set of parameters including at least one of the following: at least one port subset indicator, at least one CSI-RS resource subset indicator, or at least one additional power offset.

4. The method of claim 3, wherein each parameter set is associated with at least one of the following: Each of the plurality of resource groups; or Each of the multiple CSI-RS resource sets.

5. The method according to any one of claims 3 to 4, further comprising: The UE receives the configuration associated between each parameter set and at least one of each resource group or each CSI-RS resource set; The association is based on at least one of the following: resource group index, CSI-RS resource set index, parameter set index, CSI sub-configuration identifier ID including the parameter set, or triggered CSI sub-configuration ID.

6. The method according to any one of claims 3 to 5, further comprising: The UE receives downlink control information, which triggers at least one CSI sub-configuration in the CSI report.

7. The method according to any one of claims 3 to 6, wherein the parameter set is a general parameter set based on the plurality of resource groups or the plurality of CSI-RS resource sets.

8. A method for wireless communication performed by a network entity NE, the method comprising: The NE (120) sends (404) at least one Channel State Information (CSI) report configuration, the at least one CSI report configuration including at least one CSI sub-configuration and at least one Channel Measurement Resource (CMR), the at least one CMR including at least one of the following: (a) a CSI Reference Signal (CSI-RS) resource set having multiple resource groups, or (b) multiple CSI-RS resource sets; The NE (120) sends (406) at least one CSI-RS resource associated with the at least one CMR; as well as The NE (120) receives (408) a CSI report based on the at least one CSI-RS resource for the at least one CSI sub-configuration.

9. The method of claim 8, further comprising: The NE receives a UE capability signal indicating at least one of the following: Does the UE support a CSI reporting configuration with at least one CSI sub-configuration for a CMR that includes a CSI-RS resource set with multiple resource groups? Does the UE support a CSI reporting configuration with at least one CSI sub-configuration for a CMR that includes multiple CSI-RS resource sets? 10. The method of claim 8, wherein each CSI subconfiguration includes a set of parameters, the set of parameters including at least one of: at least one port subset indicator, at least one CSI-RS resource subset indicator, or at least one additional power offset.

11. The method of claim 10, wherein each parameter set is associated with at least one of: Each of the plurality of resource groups; or Each of the multiple CSI-RS resource sets.

12. The method according to any one of claims 10 to 11, further comprising: The NE sends the configuration of the association between each parameter set and at least one of each resource group or each CSI-RS resource set; The association is based on at least one of the following: resource group index, CSI-RS resource set index, parameter set index, CSI sub-configuration identifier ID including the parameter set, or triggered CSI sub-configuration ID.

13. The method according to any one of claims 9 to 11, further comprising: The NE sends downlink control information, which triggers at least one CSI sub-configuration in the CSI report.

14. The method according to any one of claims 10 to 13, wherein the parameter set is a general parameter set based on the plurality of resource groups or the plurality of CSI-RS resource sets.

15. A wireless communication device (110, 120) comprising a transceiver (213, 222), a processor (216, 223), and a computer-readable storage medium (217, 224) storing executable instructions for causing the processor to perform any of the methods according to claims 1 to 14 using the transceiver (213, 222).

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