Dynamic adaptation of spatial elements

Abstract

An embodiment of aspect 1 provides a user equipment (UE) for a wireless communication system, wherein the UE or its transceiver is configured to receive at least a Channel State Information (CSI) report configuration from a network node (e.g., a gNB) via a higher layer (e.g., a Radio Resource Control (RRC) layer), wherein the CSI report configuration provides at least one CSI Reference Signal (CSI-RS) resource including N>1 ports for the UE to measure, via PHY layer (e.g., Physical Downlink Control Channel (PDCCH)) signaling and / or higher layer (e.g., RRC or Media Access Control (MAC) layer) signaling, for the UE to measure the CSI-RS resource provided by the CSI report configuration. The configuration or indication of at least one associated time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters of P>1 subsets, performs measurements on the at least one CSI-RS resource provided by the CSI report configuration, calculates one or more parameters related to the channel state information CSI and / or DL ​​transmission rate and / or reliability associated with at least one of the P subsets of the CSI-RS resource configured or indicated by the network node, and transmits a report to the network node via the PHY layer or higher, the report including at least one or more of the calculated one or more parameters associated with at least one of the P subsets of the CSI-RS resource configured or indicated by the network node.

Description

Technical Field

[0001] This disclosure relates to the field of wireless communications, and in particular to methods and apparatus for channel state information (CSI) or beam reporting for wireless devices in wireless communication networks such as advanced 5G networks, to enable dynamic adaptation of antenna elements in multi-antenna communications. Background Technology

[0002] Fifth-generation (5G) mobile communication systems (also known as new radio (NR)) offer significantly higher performance levels than previous generations of mobile communication systems. The driving force behind 5G mobile communication stems from the need for ubiquitous connectivity for applications such as various automotive communications, remote control with feedback, video downloads, and data applications for Internet of Things (IoT) devices and machine-type communication (MTC) devices. 5G wireless technology brings several key advantages, such as faster speeds, lower latency, and enhanced connectivity. The third-generation partnership project (3GPP) provides complete system specifications for the 5G network architecture, which includes at least the radio access network (RAN), core transport network (CN), and service capabilities.

[0003] Figure 1 A simplified schematic diagram of an example of a wireless communication network 100, including a core network (CN) 110 and a radio access network (RAN) 120 (linked via backhaul 111), is shown. The RAN 120 shown includes multiple network nodes or radio base stations, referred to as gNBs in 5G. Three radio base stations, gNB1, gNB2, and gNB3, are depicted in the diagram. Each gNB serves an area referred to as a coverage area or cell. Figure 1Three cells 121, 122, and 123 are shown, each served by its own gNB, gNB1, gNB2, and gNB3. It should be noted that network 100 can include any number of cells and gNBs. Radio base stations or network nodes serve users within a cell. In 4G or LTE, radio base stations are called eNBs; in 3G or UMTS, they are called eNodeBs; and in other radio access technologies, they are called BSs. Users or user equipment (UEs) can be wireless terminals, mobile terminal devices, or fixed communication devices. Mobile terminal devices or wireless devices can also be IoT devices, MTC devices, etc. IoT devices can include wireless sensors, software, actuators, and computer devices. They can be embedded in mobile devices, motor vehicles, industrial equipment, environmental sensors, medical devices, aircraft, etc., and network connectivity enables these devices to collect and exchange data across existing network infrastructure.

[0004] refer to Figure 1 The diagram illustrates that each cell includes UEs and IoT devices. In cell 121, gNB1 serves UE121A, UE2 121B, and IoT device 121C. Similarly, gNB2 in cell 121 serves UE3 122A, UE4 122B, and IoT device 122C, and gNB3 in cell 123 serves UE5 123A, UE6 123B, and IoT device 123C. Network 100 can include any number of UEs and IoT devices or any other type of device. Devices communicate with the serving gNB in ​​the uplink, and the gNB communicates with the devices in the downlink. The corresponding base stations gNB1 to gNB3 can be connected to CN 120, for example, via the S1 interface, through the corresponding backhaul links 111, 121D, 122D, and 123D. Figure 1 The diagram schematically depicts the core network 120 by arrows pointing towards it. The core network 120 can connect to one or more external networks, such as the Internet. gNBs can interconnect via the S1 interface, X2 interface, or XN interface in 5G, through corresponding interface links 121E, 122E, and 123E, as depicted in the diagram by arrows pointing towards the gNBs.

[0005] For data transmission, a physical resource grid can be used. A physical resource grid can include a set of resource elements (REs) to which various physical channels and physical signals are mapped. For example, physical channels can include physical downlink, uplink, and / or sidelink shared channels (PDSCH, PUSCH, PSSCH) carrying user-specific data (also known as downlink / uplink / sidelink (SL) payload data); physical broadcast channels (PBCH) carrying, for example, master information blocks (MIBs) and system information blocks (SIBs); and physical downlink, uplink, and / or sidelink control channels (PDCCH, PUCCH, PSCCH) carrying, for example, downlink control information (DCI), uplink control information (UCI), or sidelink control information (SCI). For uplink, physical channels can also include physical random-access channels (PRACH or RACH) used by the UE to access the network after synchronizing with the radio device and obtaining the MIB and SIB. Physical signals can include reference signals (RS), synchronization signals (SS), etc. The resource grid can include frames or radio frames with a certain duration (e.g., 10 milliseconds) in the time domain and a given bandwidth in the frequency domain. Radio frames can have a certain number of subframes of predefined length, for example, two subframes of 1 millisecond length. Each subframe can include two time slots containing multiple OFDM symbols, depending on the cyclic prefix (CP) length. In 5G, each time slot contains 14 or 12 OFDM symbols, based on regular CP and extended CP, respectively. Frames can also consist of a smaller number of OFDM symbols, for example, using a shortened transmission time interval (TTI) or a micro-slot / non-slotted frame structure containing only a few OFDM symbols. 5G NR supports slot aggregation, so data transmission can be scheduled across one or more time slots. The time slot format indicates to the radio device whether the OFDM symbols are downlink, uplink, or flexible.

[0006] Wireless communication network systems can be any single-tone or multi-carrier system using frequency division multiplexing, such as orthogonal frequency-division multiplexing (OFDM) systems, orthogonal frequency-division multiple access (OFDMA) systems, or any other IFFT-based signal with or without CP, such as DFT-s-OFDM. Other waveforms can be used, such as non-orthogonal waveforms for multiple access, such as filter-bank multicarrier (FBMC), generalized frequency division multiplexing (GFDM), or universal filtered multicarrier (UFMC). Wireless communication systems can operate, for example, according to the LTE-Advanced Pro standard or the 5G or NR (New Radio) standard.

[0007] Figure 1 The wireless communication network system described herein can be a heterogeneous network with two different coverage networks, such as a macro cell network (each macro cell includes macro base stations (e.g., base stations gNB1 to gNB3)) and small cell base stations (not shown in the text). Figure 1 The network shown above (e.g., femto-base station or pico-base station) is an example. In addition to the wireless networks mentioned above, there are also non-terrestrial wireless communication networks, including spaceborne transceivers (e.g., satellites) and / or airborne transceivers (e.g., unmanned aerial vehicle systems). Non-terrestrial wireless communication networks or systems can be referenced in conjunction with those mentioned above. Figure 1 The described ground systems operate in a similar manner, for example, according to the LTE-Advanced Pro standard or the 5G or NR standard.

[0008] In wireless communication network systems as described above (such as LTE or new radio (5G)), downlink signals transmit data signals, control signals containing downlink (DL) control information (DCI), and multiple reference signals or symbols (RS) for different purposes. The gNodeB (or gNB or base station) transmits data via the so-called Physical Downlink Shared Channel (PDSCH) and transmits downlink control information (DCI) via the Physical Downlink Control Channel (PDCCH) or Enhanced PDCCH (ePDCCH). Furthermore, the downlink signals of the gNB may contain one or more types of reference signals (RS), including common / cell-specific RS (CRS), channel state information RS (CSI-RS), synchronization signals, demodulation RS (DM-RS), and phase tracking RS (PT-RS) in LTE. CRS is transmitted through a portion of the DL system bandwidth and used at the user equipment (radio device) to obtain channel estimation for demodulating data or control information. CSI-RS has a lower transmission density in both the time and frequency domains than CRS and is used at radio equipment for channel estimation or for channel state information (CSI) acquisition. Synchronization signals (SS) can be further classified into primary synchronization signals and secondary synchronization signals (PSS / SSS), transmitted together with the Physical Broadcast Channel (PBCH) in the form of SS / PBCH blocks or SS blocks (SSBs). SS or SSBs are used as a whole for purposes such as frame synchronization, cell selection, initial access, and / or beam management in DL. DM-RS is transmitted together with PDSCH, PDCCH, and / or PBCH for data demodulation by radio equipment.

[0009] Wireless communication network systems can operate in either or both of the carrier frequency ranges 1 and / or 2 (i.e., FR1 and / or FR2) defined in [1]. FR1 corresponds to a lower carrier frequency range (typically less than 6 GHz), and FR2 corresponds to a higher carrier frequency range. The network system can make some physical channels operate in FR1 and others in FR2, or make all physical channels operate entirely in FR1 or FR2.

[0010] In such Figure 1 In the schematic depiction of wireless communication network systems, such as LTE, NR, or any other communication system, multi-antenna technology can be used to improve user data rates, link reliability, cell coverage, and network capacity. Traditional methods are not optimal for the dynamic adaptation of antenna array elements. Summary of the Invention

[0011] The purpose of this invention is to improve and / or achieve dynamic adaptation of the antenna array elements of a transceiver.

[0012] This objective is addressed by the subject matter of the independent claims.

[0013] Another objective of the embodiments herein is to provide a method and apparatus for CSI or beam reporting in wireless communication networks (such as advanced 5G networks), which can facilitate the dynamic adaptation of antenna array elements used in transmission and / or reception, thereby contributing to energy savings in the network and / or wireless devices.

[0014] An embodiment of aspect 1 provides a user equipment (UE) for a wireless communication system, wherein the UE or its transceiver is configured to

[0015] • Receive at least from network nodes (e.g., gNB)

[0016] o Channel State Information (CSI) reporting configuration via a higher layer (e.g., the Radio Resource Control (RRC) layer), wherein the CSI reporting configuration provides including At least one CSI reference signal (CSI-RS) resource per port is provided for the UE to perform measurements.

[0017] o via PHY layer (e.g., Physical Downlink Control Channel (PDCCH)) signaling and / or higher layer (e.g., RRC or Media Access Control (MAC) layer) signaling, for at least one time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters associated with at least one of the CSI-RS resources provided in the CSI report configuration. Configuration or instructions performed on a subset

[0018] • Perform measurements on at least one CSI-RS resource provided by the CSI reporting configuration.

[0019] • Calculate the CSI-RS resources configured or indicated by the network nodes. Each subset contains at least one associated Channel State Information (CSI) and / or one or more parameters related to DL transmission rate and / or reliability, and

[0020] • Reports are transmitted to network nodes via the PHY layer or higher, including information related to CSI-RS resources configured or indicated by the network nodes. At least one or more of the at least one associated computed parameters in a subset.

[0021] Another embodiment provides a network node for a wireless communication system including one or more user equipments (UEs), wherein the network node or its transceiver is configured to

[0022] Transmit to UE

[0023] o Channel State Information (CSI) reporting configuration via a higher layer (e.g., the Radio Resource Control (RRC) layer), wherein the CSI reporting configuration provides including At least one CSI reference signal (CSI-RS) resource per port, for the UE to perform measurements.

[0024] o Configuration or indication via PHY layer (e.g., Physical Downlink Control Channel (PDCCH)) signaling and / or higher layer (e.g., RRC or Media Access Control (MAC) layer) signaling for at least one time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters associated with at least one of the CSI-RS resources provided in the CSI report configuration. The configuration or instructions performed on each subset, and

[0025] • Enable UE to

[0026] o Perform measurements on at least one CSI-RS resource provided by the CSI reporting configuration.

[0027] o Calculate and configure or indicate CSI-RS resources with network nodes At least one associated Channel State Information (CSI) and / or one or more parameters related to DL transmission rate and / or reliability in each subset, and

[0028] • Reports are received from the UE via the PHY layer or higher, and the reports include information about CSI-RS resources configured or indicated by the network node. At least one or more of the calculated parameters associated with at least one subset.

[0029] An embodiment of aspect 2 provides a user equipment (UE) for a wireless communication system, wherein the UE or its transceiver is configured to

[0030] • At least CSI report configurations are received from network nodes via higher layers, wherein the CSI report configurations provide at least two or more CSI-RS resources for wireless devices to perform channel measurements, and each CSI-RS resource is configured with one or more ports.

[0031] • Perform measurements on at least one or both of the CSI-RS resources.

[0032] • Calculate one or more parameters related to Channel State Information (CSI) and / or DL ​​transmission rate and / or reliability associated with at least one of the CSI-RS resources, and

[0033] • Transmit a report to the network node via the PHY layer or higher, the report including at least one or more of the calculated parameters associated with at least one of the CSI-RS resources.

[0034] Another embodiment provides a network node for a wireless communication system, the wireless communication system including one or more user equipments (UEs), wherein the network node or its transceiver is configured to

[0035] • At least the CSI report configuration is transmitted from the network node to the UE via a higher layer, wherein the CSI report configuration provides at least two or more CSI-RS resources for the radio device to perform channel measurements, wherein each CSI-RS resource is configured with one or more ports, and

[0036] • Enable UE to

[0037] o Perform measurements on at least one or two of the CSI-RS resources, and

[0038] o Calculate Channel State Information (CSI) associated with at least one of the CSI-RS resources and / or one or more parameters related to DL transmission rate and / or reliability, and

[0039] • Receive a report from the UE via the PHY layer or higher, the report including at least one or more of the calculated parameters associated with at least one of the CSI-RS resources.

[0040] An embodiment of aspect 3 provides a user equipment (UE) for a wireless communication system, wherein the UE or its transceiver is configured to

[0041] • Receive at least the CSI report configuration from network nodes via higher layers, wherein the CSI report configuration provides at least... One CSI-RS and / or SSB resource is provided for wireless devices to perform channel measurements.

[0042] • Perform measurements on at least one of the resources, and

[0043] • Reported via the PHY layer and / or higher The index / indicator / identifier of each RS, and the L1-SRP and / or L1-SINR values ​​(or differential L1-RSRP and / or differential L1-SINR) associated with each resource, where And value Configured by the network.

[0044] Another embodiment provides a network node for a wireless communication system, the wireless communication system including one or more user equipments (UEs), wherein the network node or its transceiver is configured to

[0045] • At least the CSI report configuration is transmitted from the network node to the UE via a higher layer, wherein the CSI report configuration provides at least the following: One CSI-RS and / or SSB resource is provided for wireless devices to perform channel measurements, and

[0046] • Enables the UE to perform measurements on at least one of the resources, and

[0047] • Received from UE via PHY layer and / or higher layers Reports of the index / indicator / identifier of each RS, and the L1-RSRP and / or L1-SINR values ​​(or differential L1-RSRP and / or differential L1-SINR) associated with each resource, wherein And value Configured by the network.

[0048] According to embodiments, the UE uses different spatial reception filters or is indicated with different transmission configuration indication (TCI) states to receive and / or measure the reported signals. At least two distinct RSs out of a total of RSs.

[0049] According to the embodiment, the present CSI-RS resources A subset, wherein the wireless device shall transmit one or more indices / indicators / identifiers of CSI-RS resources to the network node in the report, and one or more parameters related to the RSRP or SINR measurement associated with said subset, wherein

[0050] The report provides at least one resource from each subset, or

[0051] • At least two resources provided in the report belong to two different subsets.

[0052] According to an embodiment, based on one or more common attributes among subsets, Each CSI-RS resource group is Each subset is executed by the UE or network node, or by a fixed method in the specification.

[0053] According to an embodiment, the UE is configured to report to the network node via the PHY layer and / or higher layers. An index / indicator / identifier for a CSI-RS or SSB resource, wherein the reported resource is one of the following:

[0054] • In the configuration for measurement The resource with the best L1-RSRP / SINR among the resources, or

[0055] • In the configuration for measurement The resource has the lowest L1-RSRP / SINR and is higher than the configured or predetermined / fixed threshold. Resources.

[0056] According to an embodiment, the UE is configured to report to the network node via the PHY layer and / or higher layers. An index / indicator / identifier for a CSI-RS or SSB resource, wherein the reported resource can be one of the following:

[0057] • In the configuration for measurement The resource with the highest L1-RSRP / SINR One resource and having the lowest L1-RSRP / SINR One resource, of which ,or

[0058] • In the configuration for measurement The resource with the highest L1-RSRP / SINR The resource has the lowest L1-RSRP / SINR and is above the configured or predetermined / fixed threshold. of One resource, of which

[0059] An embodiment of aspect 4 provides a user equipment (UE) for a wireless communication system, wherein the UE or its transceiver is configured by the network to transmit. A UL RS, such as a sounding reference signal (SRS), is used for beam management, where

[0060] • The beam direction and / or spatial relationship / or orientation of the UL RS can be selected by the UE, for example, based on measurements from the DL RS or transmissions from the UL RS (e.g., the TCI status or spatial relationship of other UL RSs (which can be obtained from the UE detection process, such as U1)) or a combination of both.

[0061] · By network configuration or instruction.

[0062] Another embodiment provides a network node for a wireless communication system, the wireless communication system including one or more user equipments (UEs), wherein the network node or its transceiver configures the UE to transmit... A UL RS, such as a sounding reference signal (SRS), is used for beam management, where

[0063] • The beam direction and / or spatial relationship / or orientation of the UL RS can be selected by the UE, for example, based on measurements from the DL RS or transmissions from the UL RS (e.g., the TCI status or spatial relationship of other UL RSs (which can be obtained from the UE detection process, such as U1)) or a combination of both.

[0064] · Configured or indicated by network nodes.

[0065] According to an embodiment, the network schedules the repetition of the SRS beam to scan its Rx beam.

[0066] According to the embodiments, the received beam corresponds to different groups of antenna elements and / or spatial directions.

[0067] Based on the above aspects, an embodiment provides a system including a base station / network node and one or more corresponding UEs.

[0068] These aspects can be implemented as methods.

[0069] An embodiment provides a method for operating a user equipment (UE) of a wireless communication system, the method including...

[0070] • Receive at least from network nodes (e.g., gNB)

[0071] o Channel State Information (CSI) reporting configuration via a higher layer (e.g., the Radio Resource Control (RRC) layer), wherein the CSI reporting configuration provides including At least one CSI reference signal (CSI-RS) resource on each port is available for the UE to perform measurements.

[0072] o Configuration or indication via PHY layer (e.g., Physical Downlink Control Channel (PDCCH)) signaling and / or higher layer (e.g., RRC or Media Access Control (MAC) layer) signaling for at least one time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters associated with at least one of the CSI-RS resources provided in the CSI report configuration. Configuration or instructions performed on a subset

[0073] • Perform measurements on at least one CSI-RS resource provided by the CSI reporting configuration.

[0074] • Calculation and network node configuration or indication of CSI-RS resources At least one associated Channel State Information (CSI) and / or one or more parameters related to DL transmission rate and / or reliability in each subset, and

[0075] • Reports are transmitted to network nodes via the PHY layer or higher, including information related to CSI-RS resources configured or indicated by the network nodes. At least one or more of the at least one associated computed parameters in each subset.

[0076] An embodiment provides a method for operating a user equipment (UE) of a wireless communication system, the method comprising:

[0077] • The configuration receives at least Channel State Information (CSI) reports from network nodes via higher layers, wherein the CSI report configuration provides at least two or more CSI-RS resources for wireless devices to perform channel measurements, and each CSI-RS resource is configured with one or more ports.

[0078] • Perform a measurement on at least one of the CSI-RS resources.

[0079] • Calculate one or more parameters related to Channel State Information (CSI) and / or DL ​​transmission rate and / or reliability associated with at least one of the CSI-RS resources, and

[0080] • Transmit a report to the network node via the PHY layer or higher, the report including at least one or more of the calculated parameters associated with at least one of the CSI-RS resources.

[0081] An embodiment provides a method for operating a user equipment (UE) of a wireless communication system, the method comprising:

[0082] • Receive at least the CSI report configuration from network nodes via higher layers, wherein the CSI report configuration provides at least... One CSI-RS and / or SSB resource is provided for wireless devices to perform channel measurements.

[0083] • Perform a measurement on at least one of the resources, and

[0084] • Reported via the PHY layer and / or higher The index / indicator / identifier of each RS, and the L1-RSRP and / or L1-SINR value (or differential L1-RSRP or differential L1-SINR) associated with each resource, where ,value Configured by the network.

[0085] An embodiment provides a method for operating a user equipment (UE) of a wireless communication system, the method including receiving configuration from a network to transmit... A UL RS, such as a sounding reference signal (SRS), is used for beam management, where

[0086] • The beam direction and / or spatial relationship / or orientation of the UL RS can be selected by the UE, for example, based on measurements from the DL RS or transmissions from the UL RS (e.g., the TCI status or spatial relationship of other UL RSs (which can be obtained from the UE detection process, such as U1)) or a combination of both.

[0087] · By network configuration or instruction.

[0088] An embodiment provides a method for operating a network node in a wireless communication system, the wireless communication system including one or more user equipments (UEs), the method comprising:

[0089] Transmit to UE

[0090] o via a channel state information (CSI) reporting configuration at a higher layer (e.g., the radio resource control (RRC) layer), wherein the CSI reporting configuration provides at least one CSI reference signal (CSI-RS) resource, including the port, for the UE to measure.

[0091] o via PHY layer (e.g., Physical Downlink Control Channel (PDCCH)) signaling and / or higher layer (e.g., RRC or Media Access Control (MAC) layer) signaling, for at least one time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters associated with at least one of the CSI-RS resources provided in the CSI report configuration. The configuration or instructions performed on each subset, and

[0092] • Enable UE to

[0093] o Perform measurements on at least one CSI-RS resource provided by the CSI reporting configuration.

[0094] o Calculates the CSI-RS resources configured or indicated by the network nodes. At least one associated channel state information, CSI and / or DL ​​transmission rate and / or reliability-related parameters in each subset, and

[0095] • Reports are received from the UE via the PHY layer or higher. These reports include information related to CSI-RS resources configured or indicated by the network node. At least one or more of the at least one associated computed parameters in each subset.

[0096] An embodiment provides a method for operating a network node in a wireless communication system, the wireless communication system including one or more user equipments (UEs), the method comprising:

[0097] • The configuration transmits at least Channel State Information (CSI) reports from the network node to the UE via a higher layer, wherein the CSI reporting configuration provides at least two or more CSI-RS resources for the radio device to perform channel measurements, wherein each CSI-RS resource is configured with one or more ports, and

[0098] • Enable UE to

[0099] o Perform a measurement on at least one of the CSI-RS resources, and

[0100] o Calculate channel state information, CSI, and / or one or more parameters related to DL transmission rate and / or reliability associated with at least one of the CSI-RS resources, and

[0101] • Receive a report from the UE via the PHY layer or higher, the report including at least one or more of the calculated parameters associated with at least one of the CSI-RS resources.

[0102] An embodiment provides a method for operating a network node in a wireless communication system, the wireless communication system including one or more user equipments (UEs), the method including...

[0103] • At least the CSI report configuration is transmitted from the network node to the UE via a higher layer, wherein the CSI report configuration provides at least the following: One CSI-RS and / or SSB resource is provided for wireless devices to perform channel measurements, and

[0104] • Enables the UE to perform measurements on at least one of the resources, and

[0105] • Received from UE via PHY layer and / or higher layers Reports of the index / indicator / identifier of each RS, and the L1-RSRP and / or L1-SINR values ​​(or differential L1-RSRP and / or differential LS-SINR) associated with each resource, where And value Configured by the network.

[0106] An embodiment provides a method for operating a network node in a wireless communication system, the wireless communication system including one or more user equipments (UEs), the method including configuring the UE to transmit. One UL RS (e.g., a sounding reference signal SRS) is used for beam management, where

[0107] • The beam direction and / or spatial relationship / direction of the UL RS can be selected by the UE, for example, based on measurements from the DL RS or transmissions from the UL RS (e.g., the TCI status or spatial relationship of other UL RSs (which can be obtained from the UE detection process, such as U1)), or a combination of both.

[0108] · Configured or indicated by network nodes.

[0109] The above methods can be implemented by a computer.

[0110] According to one aspect of some embodiments herein, a method performed by a wireless device is provided.

[0111] The optional features primarily used in aspect 1, but also applicable to aspects 2, 3, and 4, will be discussed below:

[0112] According to an embodiment, the spatial domain resource associated with the CSI-RS resource is the port associated with the CSI-RS resource. According to an embodiment, the frequency domain resource associated with the CSI-RS resource is the physical resource block associated with the CSI-RS resource. According to an embodiment, the temporal domain resource associated with the CSI-RS resource is the symbol associated with the CSI-RS resource in the time slot / subframe / frame.

[0113] According to an embodiment, the CSI reporting configuration provides at least one of the following:

[0114] • One or more non-zero power (NZP) CSI-RS resources used for channel measurements.

[0115] • One or more zero-power (ZP) CSI-RS resources used for interference measurements.

[0116] • One or more CSI Interference Management (CSI-IM) resources used for interference measurement.

[0117] • One or more NZP CSI-RS resources for interference measurement.

[0118] According to an embodiment, the CSI report configuration provides at least one time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters associated with at least one of the CSI-RS resources. Configuration or indication of a subset.

[0119] According to an embodiment, the network node provides the UE with at least one of the following instructions or configurations via the PHY layer or higher:

[0120] • Enables the UE to select CSI-RS reporting resources A given subset of a subset And one or more parameters,

[0121] • Capable of calculating subsets The parameters of one or more parameters associated with CSI and / or DL ​​transmission and / or DL ​​transmission rate and / or reliability.

[0122] • Thresholds for relevant parameters of CSI, DL transmission rate and / or reliability.

[0123] According to an embodiment, the network node provides the UE with a configuration or indication of one or more parameters associated with at least one subset of CSI-RS resources, which are channel state information (CSI) and / or DL ​​transmission rate and / or reliability that the UE should measure, calculate and / or report.

[0124] According to the embodiments, reports are performed to network nodes via the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH).

[0125] According to embodiments, one or more parameters related to CSI and / or DL ​​transmission rates and / or reliability are associated with CSI-RS resources. The subsets are related, among which ;and The value is configured by the network node and / or equal to , and / or are fixed in the specification.

[0126] According to an embodiment, the UE is configured to measure, calculate, and / or report to network nodes information associated with CSI-RS resources. At least one of the following parameters associated with one or more subsets:

[0127] • Broadband or subband CQI value

[0128] • Precoding matrix indicator or related information about the precoding matrix indicator

[0129] Rank indicator

[0130] Layer indicator

[0131] According to an embodiment, the report includes information related to CSI-RS resources. At least one of the following parameters associated with each subset, wherein :

[0132] • Performance / measurement metrics

[0133] • A differential or relative performance / measurement metric calculated relative to the same metric associated with the CSI-RS resource.

[0134] • A differential or relative performance / measurement metric calculated in association with one of the P subsets associated with the CSI-RS resource.

[0135] According to an embodiment, the performance / measurement metrics and / or differential / relative performance / measurement metrics reported by the wireless device to the network node via the PHY layer or higher are at least one of the following:

[0136] • Reference signal received power (RSRP) or differential RSRP,

[0137] • Signal-to-interference plus-noise ratio (SINR) or differential SINR,

[0138] • Index / indicator of modulation and coding scheme (MCS) or differential MCS index / indicator,

[0139] • Channel Quality Indicator / Index (CQI) or Differential CQI,

[0140] • The value / differential value (or an indicator of the value / differential value) of throughput / spectral efficiency or any other parameter related to data rate or reliability.

[0141] • Rank or difference rank value / indicator

[0142] • BLER or differential BLER value / indicator.

[0143] According to an embodiment, the UE is configured to report to the network node at least an index / indicator / identifier of a first subset associated with CSI-RS resources, wherein at least one of the following conditions applies:

[0144] • The value of at least one parameter associated with the first subset is greater than (or less than) a predetermined, pre-configured, or configured threshold. ,

[0145] • Associated with CSI-RS resources The value of at least one parameter associated with at least one other subset within a subset is greater than (or less than) the threshold. Or different pre-set, pre-configured, or configured thresholds ,in

[0146] The number / size / dimension of time-domain, frequency-domain, and / or spatial-domain resources associated with the first subset is less than the number, size / dimension, and / or size of the at least one other subset.

[0147] The value of the parameter and the threshold The difference / deviation is higher (or lower) than the difference / deviation between the at least one other subset and its corresponding threshold, and / or

[0148] The index / indicator / identifier of the first subset is higher than / lower than the index, indicator / identifier of the at least one other subset.

[0149] According to an embodiment of the present invention, the CSI-RS resource exists. A subset There are several groups, in which the UE should provide the network node with information about CSI-RS resources in the report. A subset of parameters associated with CSI and / or DL ​​transmission rate and / or reliability, wherein in subset, when hour

[0150] • At least two subsets belong to two different groups, or

[0151] Each subset belongs to a different group. Attached Figure Description

[0152] Embodiments of the invention will now be described in more detail with reference to the accompanying drawings, in which:

[0153] Figure 1 A schematic representation of a wireless communication system is shown;

[0154] Figure 2 A schematic representation of two-stage beamforming is shown, involving precoding of the MIMO layer to the antenna port based on CSI, followed by beamforming via beam management;

[0155] Figure 3 A typical timeline for CSI measurements and feedback in 3GPP 5G-NR is shown;

[0156] Figure 4 A schematic representation of DL transmission using a codebook-based precoding scheme is shown;

[0157] Figure 5 A schematic representation of DL transmission using a codebook-based precoding scheme and analog beamforming is shown;

[0158] Figure 6 The time series diagram of link adaptation involved in the hybrid beamforming array at the network node is shown;

[0159] Figure 7 An example of CSI-RS resource and subset configuration and its association with the antenna array port at the base station is shown;

[0160] Figure 8 An example of CSI-RS resource and subset configuration and its association with the antenna array port at the base station is shown;

[0161] Figure 9 An example of beam management using a subset of elements in a physical antenna array in hybrid beamforming is shown, given the number of virtual antenna ports and CS-RS resources;

[0162] Figure 10 This is a block diagram depicting a wireless device according to some embodiments thereof; and

[0163] Figure 11 This is a block diagram depicting network nodes according to some embodiments of this document. Detailed Implementation

[0164] In the following sections, detailed descriptions of exemplary embodiments are provided in several scenarios with reference to the accompanying drawings to facilitate a more comprehensive understanding of the solutions described herein.

[0165] exist Figure 1 In the wireless communication network system schematically depicted, multi-antenna techniques (e.g., according to LTE, NR, or any other communication system) can be used to improve user data rates, link reliability, cell coverage, and network capacity. Traditional methods are not optimal in terms of the dynamic adaptation of antenna array elements.

[0166] To support multi-stream or multi-layer transmission, the physical layer of a communication system uses linear precoding. Linear precoding is performed by a precoder matrix that maps the data layer to antenna ports. Precoding can be viewed as a generalization of beamforming, a technique that spatially directs or focuses data transmission toward a target receiver. Channel state information (CSI) is used to determine the precoder matrix used at the gNB to map data to transmit antenna ports.

[0167] For signal precoding at the gNB, channel state information is reported or fed back from user equipment (radio devices served by the gNB) and / or obtained from the UL channel of the reference signal transmitted by the measurement radio device.

[0168] Alternatively, in addition to CSI-based precoding, CSI-free beamforming can be performed through a beam management process (involving stepwise beam scanning transmission, reporting of measurements completed by the receiver, and beam determination detailed later), such as... Figure 2 As shown.

[0169] Figure 2A physical antenna array element 20 for beamforming via beam management is shown (see box 18). Beamforming via beam management first occurs in N... s One MIMO layer (see boxes 12 and 14) and This is accomplished in a virtual antenna port array (box 16).

[0170] Networks employing large-scale antenna arrays 20 for transmission and reception exhibit significant energy consumption due to the large number of power amplifiers and analog beamforming networks involved in their operation. Given that a large portion of the network's power consumption originates from such arrays, dynamically switching to smaller subsets of the antenna arrays on the network side based on user needs, location, speed, traffic conditions, and / or scheduling requirements would contribute to continuous adaptive energy saving on the network side. This disclosure proposes various network energy-saving methods using CSI frameworks and / or beam management.

[0171] The multiple-input multiple-output (MIMO) framework in a wireless communication network system essentially maps the spatial layer of transmission (e.g., the PDSCH layer in the downlink) to a set of antenna ports (array). These antenna ports are then mapped to a set of physical antenna elements (array). Each stage of this mapping may involve spatial precoding and / or beamforming to apply specific desired precoding / beamforming weights. The weights of the antenna array (also known as the array pointing vector) are the amplitude gain and phase adjustment applied to the signal fed into the antenna (or received from the antenna) for transmitting (or receiving) radiation in a specific direction. Typically, the number of antenna ports is equal to or greater than the number of spatial layers, and the number of physical antenna elements is equal to or greater than the number of antenna ports. Beamforming / precoding can be performed in a single stage or two (or more) stages, involving digital beamforming (called precoding in 5G NR) of digital baseband signals and / or analog beamforming of analog (RF) signals, i.e., potentially hybrid digital-analog beamforming. Hybrid beamforming is typically implemented in systems that map a small number of spatial layers to a large number of physical antenna elements (such as FR2 systems). By using hybrid beamforming, the number of RF links required at each antenna port at the output of the digital precoding stage can be minimized, thereby reducing device or network power consumption.

[0172] Digital beamforming or precoding is performed based on channel state information (CSI) available to the transmitter. In time-division duplex (TDD) wireless communication networks, if channel reciprocity exists between the uplink and downlink, the base station (gNB) can obtain downlink precoding information via uplink measurements. Some other CSI parameters (such as the modulation order and coding scheme and / or rank to be used) may still need to be obtained through CSI feedback from the radio equipment. However, when frequency-division duplex (FDD) is used, due to the lack of channel reciprocity (as is the case in some TDD scenarios), precoding information must be calculated / estimated at the radio equipment and then fed back to the gNB via CSI reports.

[0173] Simulated beamforming (if applicable / when beamforming must be selected from multiple possible simulated beams) is performed via beam reports from the UE. The UE and gNB determine the beam pairs for transmission and reception by employing beam management procedures (such as beam scanning, beam refinement, and beam selection) in the downlink and / or uplink, supplemented by measurements at the UE and / or gNB and / or the UE's beam reports.

[0174] The CSI available at the gNB is used for several processes (as described in detail later), including spatial precoding (or digital beamforming), which maps the spatial layer used to transmit the PDSCH to an array of antenna ports. As shown, these antenna ports are mapped to the same number or more physical antenna elements. In some scenarios, this step may involve analog beamforming (typically processing waveform-modulated PDSCH signals that have been converted from the discrete time / digital domain to the continuous time / analog domain). Note that the precoding (or digital beamforming) and analog beamforming steps constitute the overall beamforming of the transmitted signal, often referred to as hybrid beamforming. Specifically, analog beamforming can apply further beamforming weights to the precoded (digital beamforming) signal from the antenna port array as it is mapped to the antenna element array, in order to further shape the antenna gain pattern or direct the beam toward a desired radiation direction or beam. The analog beamforming weights can be fixed, for example, for shaping sectored antenna gain patterns, which is typically implemented in FR1 and is universal for all users serving within the intended coverage area (without explicit beam management procedures). Alternatively, the beamforming weights can be estimated and changed over time to form an antenna pattern pointing in the desired direction for each UE, which is typically achieved through the beam management process described in FR2 above.

[0175] Precoding or digital beamforming

[0176] In various systems, particularly FR1, only precoding or digital beamforming is required / performed. In such systems, each antenna port may correspond to an antenna element, or analog beamforming may be established in the gNB and / or UE with a fixed wide beam (this may be sufficient to cover the entire cell / sector that the network node or UE needs to cover). Even in systems with beam management, once the desired analog beamforming is established, CSI feedback is required to adjust link parameters to schedule data transmission. Downlink (DL) transmission parameters from the network node to the user equipment (radio device) can be updated via Channel State Information (CSI) feedback from the user equipment. The network configures the parameters to be reported by the radio device at the CSI feedback / CSI reporting time. The network node or another communication entity provides the radio device with reference signal (RS) resources to be measured by the radio device for CSI feedback or CSI reporting. CSI feedback is transmitted by the radio device based on measurements from one or more RSs (such as CRS, SSB, or CSI-RS resources). After receiving and subsequently measuring DL RS, in addition to interference and / or noise information under certain circumstances based on network configuration and / or wireless device implementation, the wireless device typically calculates an estimate of the channel information between itself and the network node. Based on the aforementioned channel, interference, and / or noise estimates, the wireless device calculates and sends one or more of the following parameters applicable to the transmission of the physical downlink channel in the CSI feedback / report to the network:

[0177] -CSI-RS Resource Index / Indicator (CRI) or SSB Resource Index / Indicator (SSBRI): Wireless devices can report one or more indices that indicate channel measurement resources (CSI-RS resources and / or SSBs) associated with one or more other parameters in the CSI feedback. The network can configure one or more resources that the wireless device can measurable. Based on measurements of these resources, the wireless device can selectively associate one or more of these resources with downlink physical channel transmissions (e.g., PDSCH). These resources are indicated via CRI / SSBRI.

[0178] - Rank index / indicator (RI): This parameter represents the rank of the transport (the number of spatial layers transported). It is conditional on either CRI or SSBRI. This means that the rank is calculated based on a measurement of the resource, or for a DL transport associated with the resource described in the CRI / SSBRI.

[0179] - Precoded Matrix Index / Indicator (PMI):The PMI provides information about the spatial precoding to be used (a mapping from the spatial layer to the antenna port set for PDSCH transmission), conditioned at least on the CRI / SSBRI and the corresponding RI. The spatial precoding information included in the PMI may correspond to a frequency subband and / or wideband resolution; that is, the information may cover the entire CSI reporting band and / or a subset of the CSI reporting band. The network can configure a codebook or precoding type for the computation of the precoding information. This determines the format, size, and parameters in the reported precoding information.

[0180] -Channel Quality Index / Indicator (CQI): Wireless devices report one or more CQI values ​​for one or more transport blocks / codewords based on a spatial precoder (i.e., PMI or a precoder built using PMI) and / or RI. The CQI value typically represents the modulation and coding scheme (MCS) available for transmitting the transport block / codeword. The CQI is determined based on the assumption / understanding that the block error rate of a transport block / codeword (such as a PDSCH) with an MCS represented by the CQI is at most [value missing]. ,in The value is either known beforehand by the wireless device or provided by the network. In some examples, when the wireless device does not calculate the PMI, the CQI is conditioned on the RI instead of the PMI. In other examples, the CQI can be calculated directly conditioned on the reference signal measurement, without depending on the PMI or RI, or conditioned on the PMI or RI (e.g., when neither the RI nor the PMI is reported). The CQI can be based on wideband or subband, meaning that the CQI can be reported for the entire CSI reporting band or multiple subbands within the CSI reporting band.

[0181] -Level Index / Indicator (LI): LI indicates which column in the precoder matrix of the reported PMI corresponds to the strongest layer of the codeword corresponding to the reported maximum bandwidth CQI.

[0182] The CSI feedback / report provided by the wireless device, including one or more of the above parameters, is used for scheduling of physical downlink channels (e.g., PDSCH or PDCCH). Figure 3 An overview of typical CSI measurement and reporting timelines is provided.

[0183] Typically, the CSI report configuration provided by a network node to a wireless device includes one or more of the parameters mentioned above (instructing the wireless device to report). CSI reports can be transmitted in one or more parts on the Physical Uplink Shared Channel (PUSCH) or the Physical Uplink Control Channel (PUCCH). Figure 3 It shows a typical CSI measurement and reporting timeline in the 3GPP 5G new radio standard.

[0184] For CSI configuration, network nodes provide CSI reports / feedback and the configuration of associated resources to be measured via higher layers. CSI triggering can be an optional step when CSI reporting is semi-persistent or aperiodic. The NW signals via the MAC-CE or PHY layer to trigger one or more CSI reports.

[0185] In the next task, the UE measures the DL RS resources associated with the CSI report. Additionally, the UE calculates parameters that need to be fed back, such as those configured by the CSI report and provided via higher layers. This means the UE can calculate CSI parameters.

[0186] CSI feedback on PUSCH or PUCCH can proceed as follows: Based on CSI report confirmation, the UE transmits the required parameters on PUSCH or PUCCH in one or more parts. The report format for a given set of report parameters is provided by the specification.

[0187] Figure 4 A modular model of multiple-input multiple-output (MIMO) DL transmission using a codebook-based precoding method is shown. Base station 200 (gNB), user equipment (radio device) 202, and channel 204 are analogous to a wireless channel used for wireless data communication between base station 200 and user equipment 202. The base station includes an antenna array ANT with multiple antennas or antenna elements. T And a precoder 206 receiving data vector 208 and precoder matrix F from codebook 210. Channel 204 can be described by channel tensor / matrix 212. User equipment 202 is connected via an antenna or an antenna array ANT having multiple antennas or antenna elements. R Received data vector 214. A feedback channel 216 is provided between user equipment 202 and base station 200 for transmitting feedback information. Previous versions of 3GPP up to version 15 supported CSI estimation at the radio device end using multiple downlink reference symbols (such as CSI-RS).

[0188] In FDD systems (up to version 15), wireless devices implicitly report channel estimates to the gNB via a feedback channel. Their transmitted CSI reports include one or more of the following: Rank Indicator (RI), Precoding Matrix Indicator (PMI), and Channel Quality Indicator (CQI) (and also CRI since version 13), allowing the gNB to determine the spatial precoding of the symbols to be transmitted, as well as the modulation order and coding scheme (MCS). PMI and RI are used to select from a predefined matrix set. Spatial precoding is determined in the codebook (also known as the codebook). For example, according to LTE, the codebook can be a lookup table, with each entry containing a matrix. The wireless device uses PMI and RI to determine which row and column of the table to obtain the precoder matrix to use. As of version 15, the precoder and codebook are designed to be equipped with… One dual-polarized antenna (total) gNB with a one-dimensional uniform linear array (ULA) of antennas, or equipped with... The location has a dual-polarized antenna (total) A gNB is a two-dimensional uniform planar array (UPA) with multiple antennas. It is assumed here that each antenna corresponds to an antenna port at the gNB. ULA allows control of radio waves only in the horizontal (azimuth) direction, thus enabling azimuth-only beamforming at the gNB, while UPA supports transmit beamforming in both the vertical (elevation) and horizontal (azimuth) directions, also known as full-dimension (FD) MIMO. The codebook (e.g., in the case of a massive antenna array like FD-MIMO) can be a set of beamforming weights that use the array's array response vector to form spatially separated electromagnetic transmit / receive beams. The array's beamforming weights (also called array steering vectors) are amplitude gain and phase adjustments applied to the signal fed into (or received from) the antenna to transmit (or receive) radiation in a specific direction. The components of the precoder matrix are obtained from the codebook, which is read using PMI and RI to obtain the precoder. When using ULA or UPA to transmit signals, the array steering vector can be described by the columns of a two-dimensional Discrete Fourier Transform (DFT) matrix.

[0189] The precoder matrices used in the Type I, Type I Multi-Panel, and Type II CSI reporting schemes in 3GPP New Radio Release 15 are defined in the frequency domain and have a two-level structure (i.e., a two-component codebook): ,in Indicates the number of sub-bands. The first component, or so-called first-stage pre-encoder ( This is used to select multiple beam vectors from a matrix based on Discrete Fourier Transform (DFT-based) (also known as a spatial codebook). Furthermore, the first-level pre-encoder ( () corresponds to the broadband matrix, and the sub-band index Irrelevant, and includes selections from a DFT-based codebook matrix. A spatial beamforming vector (the so-called spatial beam) Suitable for two polarizations of antenna arrays. For type I codebooks, , making It can be simplified to The spatial codebook includes A supersampled DFT matrix of dimension, where and Let represent the oversampling factors for the first and second dimensions of the codebook, respectively. The DFT vectors in the codebook are grouped into . , There are 10 subgroups, each containing 10 subgroups. A DFT-based vector, parameters and These are respectively represented as rotational oversampling factors with respect to the first and second dimensions of the antenna array.

[0190] The second component, or so-called second-level pre-encoder ( ) is used to combine the selected beam vectors. This means that the second-level pre-encoder ( () Corresponds to the selection / combination / in-phase matrix, used for... The first defined in The beams of each configured sub-band are selected / combined / in-phase. For example, for rank-1 transmission and type I CSI reporting, the dual-polarized antenna array... Depend on Given, among which, It is the quantization in-phase factor (phase adjustment) between the two orthogonal polarizations of the antenna array. Therefore, for a Type I codebook, each transmission layer of the precoding selects only a single DFT beam, so that the transmission is directed towards the strongest path component in the radio frequency channel.

[0191] For rank-1 transmission and type II CSI reporting, dual-polarized antenna arrays Depend on Given, among which and These are the quantized amplitude and phase beamforming coefficients, respectively. For the rank... transmission, Include vectors, where represents the transmission rank, where terms for each vector are selected to combine one or more beams within each polarization.

[0192] matrix and The selection of the matrix is ​​performed by the wireless device based on knowledge of reference signals (such as CSI-RS) and channel conditions. The selected matrix is ​​indicated in the CSI report in the form of RI (RI represents the rank of the precoding matrix) and PMI, for use by the gNB to update the multi-user precoder for the next transmission time interval.

[0193] In addition to the Type I codebook, 3GPP Release 15 also defines a Type I multi-panel (multi-antenna array) codebook for gNBs equipped with multiple (co-located) antenna panels or antenna arrays (which may be uncalibrated). The precoder for this codebook is similar to that of the Type I codebook, where a single DFT beam is applied to each transmission layer of the precoding matrix. To account for different spacing between antenna panels and / or possible phase calibration errors between antenna panels (e.g., due to different local oscillators), a dedicated in-phase factor must be applied to each panel. For example, for rank-1 transmissions and those equipped with… The gNB with antenna panel, the Type I multi-panel CSI report definition is:

[0194]

[0195] in and It is a quantitative in-phase factor. It is a panel-specific in-phase factor applied to the second panel.

[0196] Beam management

[0197] Considering that 5G NR systems may employ hybrid beamforming, the CSI required for precoding can be obtained in two phases. The first phase is the beam management phase, which is used to establish the desired shape of the simulated beam, and the second phase is the CSI acquisition phase as described above.

[0198] The beam management phase is considered the process of selecting the beam at Tx and Rx. This may involve...

[0199] • One or more steps of transmitting DL RS (such as SSB and / or CSI-RS), each step may include repeated or non-repeated measurements of Layer 1-Reference Signal Received Power (L1-RSRP) and / or Layer 1-Signal to Interference plus Noise Ratio (L1-SINR) at the UE, and beam reporting from the UE including a preferred beam index (e.g., via CRI or SSBRI) and the corresponding RSRP and / or SINR levels, followed by beam determination by the gNB, and / or

[0200] • One or more steps of transmitting UL RS (such as SRS), each step may include repeating or non-repeating, corresponding measurements are performed at the gNB, then beam determination is performed by the gNB, and the gNB may report to the user a beam report containing the preferred beam index of the base station (e.g. via SRI) and the corresponding RSRP and / or SINR level, so that the UE can determine its beam.

[0201] Either of the two beam management methods mentioned above may involve the following tasks:

[0202] • Beam scanning: Transmitting / receiving RS via multiple beams, each beam shaped in a different direction, enables the UE or gNB to cover a desired spatial area. This may involve utilizing different subsets of antenna elements (e.g., to save energy), which will be described in detail in some of the embodiments below.

[0203] • Beam measurement: gNB or UE measures the characteristics of different received beamforming signals.

[0204] • Beam Reporting: The UE (or gNB) reports beam information to the gNB (or UE) based on measurements.

[0205] • Beam determination: The gNB or UE selects its beam for DL / UL transmission or reception, or further refines the beam.

[0206] The determination of the DL Tx beam to perform transmission of one or more physical DL channels is performed by the network node (e.g., gNB) via a beam scanning process. During beam scanning, the gNB configures a set of DL RSs (such as CSI-RS or SSB) via RRC for the UE to measure. Each configured DL RS can be transmitted by the gNB using a different spatial filter / beam (i.e., a different direction). The UE receives and measures each configured DL RS through one or more spatial filters—all RSs can be received using the same spatial filter, or different spatial filters can be used for each RS. After measurement, the UE sends a beam report to the gNB. The beam report includes... The index of each configured DL RS is essentially... Each DL Tx beam direction (each beam direction is generated from the gNB using a specific spatial filter), and one or more of the following parameters associated with each RS:

[0207] · Reference signal received power (RSRP)Each reported RS is associated with an RSRP value or a differential RSRP value, wherein the differential RSRP value is calculated or reported relative to the RSRP of one of the other reported RSs. The RSRP associated with an RS is calculated / estimated / measured by the wireless device based on the resource elements occupied by the RS.

[0208] · Signal-to-interference-plus-noise ratio (SINR): Each reported RS is associated with a SINR value or a differential SINR value, where the differential SINR is calculated or reported relative to the SINR of one of the other reported RSs. The SINR associated with an RS is calculated / estimated / measured at least based on the RE associated with said RS, and in conjunction with measurements obtained from one or more interference measurement resources, such as CSI Interference Management (CSI-IM) resources and / or non-zero power CSI-RS resources for interference.

[0209] In some examples, The value can range from 1 to 4. With the aid of beam reports from the UE, the gNB determines one or more suitable DL Tx beam directions, i.e., one or more spatial filters for transmitting one or more PDCCHs and PDSCHs. Based on the transmitted DL RS, the report index can be: CSI-RS Resource Index / Indicator (CRI) or SSB Resource Index Source Index / Indicator (SSBRI) .

[0210] The “RSRP” or “SINR” reported by wireless devices can be referred to as “L1-RSRP / Layer 1-RSRP” and “L1-SINR / Layer 1-SINR”, respectively, to represent the PHY layer RSRP or SINR. This RSRP / SNR value is usually obtained from the RE associated with or occupied by the RS (for SINR, it also needs to be combined with the measurement of one or more interference measurement resources).

[0211] Typically, the calculated / estimated / measured RSRP / SNR values ​​(i.e., L1-RSRP / SINR values) are not filtered in any way, for example, without using coefficients or a predetermined set of coefficients configured for the wireless device via a higher layer.

[0212] Figure 5 The diagram provides a schematic of a wireless system employing a MIMO DL hybrid beamforming model, illustrating the mapping to the gNB immediately following the codebook-based precoding or digital beamforming stage. The simulated beamforming stage of each antenna element. Specifically, the pre-encoder. Mapped to the number of RF links A virtual antenna port, then through a simulated beamforming matrix Mapping to a larger number Ports. Note that when overall beamforming is represented as At that time, only the special case of precoding (explained above) satisfies and It is an identity matrix. Figure 5 The document also describes the L1-RSRP / SINR beam reports required for beam management in hybrid / analog beamforming.

[0213] Figure 5 A modular model of MIMO DL transmission using a codebook-based encoding method is also shown. Figure 5 The entity and Figure 4 The entities are essentially the same, but enhanced by beamformer 306. Specifically, base station 300 (corresponding to base station 200) is configured to communicate with wireless device 302 (corresponding to UE 202) via channel 304 (corresponding to channel 204). Block 316 corresponds to block 214, where block 314 corresponds to block 212. Base station 300 includes data vector 310 (see description of 208), pre-encoder 308 (see description of 206), and codebook 312 (see codebook 210). Furthermore, the base station also includes pre-encoder 308 and antenna ANT. T This includes a simulated beamformer 306.

[0214] Figure 6 The diagram shows a time series of a two-stage link adaptive process employing hybrid / analog beamforming in DL and / or UL. For DL ​​Tx / Rx beam management implemented via DL RS transmission, the following applicable procedures are as follows: Figure 6 As shown:

[0215] Figure 6 The communication between gNB 600 and UE 602 is illustrated. The first step is beam scanning, reporting, and identification. This step is indicated by reference numeral P1. This process will be described below. According to an embodiment, further processes P2 and P3 may be performed during the first step S1. During the second step S2, CSI acquisition and DL scheduling may be performed.

[0216] • Process P1: The gNB transmits multiple DL RS resources by scanning its Tx beams in different directions, and the UE also performs measurements by scanning its Rx beams in possible different directions. Based on this, the UE can select its desired Rx beam and report one or more preferred gNB beams (indicated by the beam index, either CRI or SSBRI) to the gNB, allowing the gNB to determine its beam selection.

[0217] • Process P2: By fixing the UE beam selected from P1, the possibility of further scanning of the gNB Tx beam is realized to perform UE measurements. Based on this measurement, the UE can report one or more gNB beams to the gNB again.

[0218] This possibility can be used to optimize / refine the gNB beam, for example, to form a finer and more focused beam (to obtain better link gain), or to change the gNB beam properties by employing a reduced subset of physical antenna elements in the available array (while taking into account other metrics including network power efficiency), which will be described in detail in some of the following embodiments.

[0219] • Process P3: By fixing the Tx beam selected from P1 and P2, the possibility of further measurement of DL RS transmission by the UE is made so that the UE can further adjust / refine the UE beam.

[0220] Step S2 includes the following sub-steps: In sub-step S2a, gNodeB 600 performs DL channel probing with the selected DL Tx beam, enabling the UE to calculate the CSI parameters for the given DL beam. In response, in sub-step S2b, UE 602 reports the CSI of the DL beam. gNB 600 schedules DL transmissions based on the received CSI (see step S2c).

[0221] When the beam pairing between the gNB and the UE established through the aforementioned process involving DL RS transmission for DL ​​reception also applies to the UE's UL transmission, the UE is considered to have a "beam correspondence." This correspondence between the DL reception and UL transmission beams is a capability of the UE and is reported by the UE to the network node. When the UE does not have this beam correspondence, UL channel probing based on beamforming RS is required to determine the UL Tx beam at the UE and the Rx beam at the gNB. Even if a beam correspondence exists, this UL probing can still be performed when it is found to be beneficial in certain situations (as presented in some embodiments below). Replacing the aforementioned optional processes P2 and / or P3 with a process involving UL RS transmission (such as sounding reference signal (SRS) transmission) helps reduce gNB power consumption and DL probing overhead. The gNB performs measurements on the SRS beam from the UE and triggers / schedules UL transmission via the SRS resource indicator (SRI) value. Similar to P2 / P3, in this case, one or more steps of SRS beam scanning, thinning, and gNB Rx beam thinning / identification can be performed. like Figure 6 It is also indicated that the process based on uplink RS transmission (such as using SRS) may include,

[0222] • Process U1: The UE transmits by scanning the UL Tx beams, and the gNB performs measurements by scanning its Rx beams. The gNB can select its desired Rx beams based on these measurements and trigger / schedule one or more preferred UE beams using the UE beam / SRS index (e.g., SRS resource indicator (SRI)).

[0223] • Process U2: By fixing the UE Tx beam selected by U1 (or P1 / P2), the possibility of further scanning of the gNBRx beam is realized to perform gNB measurements for SRS transmission. Based on this measurement, the gNB can optimize / change its own beam for the UE without any feedback.

[0224] • Process U3: By fixing the gNB Rx beam selected in U2, it enables the possibility of further UE Tx beam scanning to refine / optimize the UE beam. This process includes gNB measurement and beam reporting / triggering / scheduling from gNB to UE.

[0225] As will be described in detail below, in some embodiments, we propose improvements to processes P2 and U2 as options for optimizing the gNB beam, taking into account network energy efficiency in addition to other UE performance metrics. Essentially, after P1 and / or U1 selects the optimal UE beam, optimizing the gNB beam can depend on processes involving the following...

[0226] • UE measurement of DL RS (typically CSI-RS / SSB) transmission and enhanced UE beam reporting, or

[0227] • The UE transmits UL RS (usually SRS) and gNB measurements, as well as beam reports.

[0228] In either of the above cases, the required gNB beam can be determined so that:

[0229] • Maximize energy efficiency while meeting given UE performance requirements (such as user throughput, cell throughput, user reliability, etc.), or

[0230] • Maximize UE performance while meeting given energy efficiency requirements.

[0231] Figure 9 The diagram illustrates the above-mentioned possibilities for beam scanning at the gNB end using different subsets of physical antenna elements.

[0232] Figure 9The CSI-RS resources are shown (see CSI-RS beamforming via analog beamformer 306). These CSI-RS resources are mapped by the beamformer to different subsets of physical antenna elements, such as SA1, SA2, and SA3. Therefore, the gNB performs CSI-RS detection with three beams (B, B', and B'') associated with the three different subsets of physical antenna elements, SA1, SA2, and SA3, respectively.

[0233] In the following text, the term "higher layer" typically refers to any communication layer above the physical (PHY) layer in the protocol stack, such as the Radio Resource Control (RRC) layer, Media Access Control (MAC) layer, etc. When it is used in conjunction with layer "X" in the protocol stack, such as "Media Access Control (MAC) layer or higher," it refers to any layer in the protocol stack above layer "X" (such as any layer above the MAC layer in the example above).

[0234] Reports or transmissions by wireless devices via the Physical (PHY) layer involve transmitting information (which can be reports) via physical uplink channels such as the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH). Reports or transmissions by wireless devices via higher layers involve transmitting information via the Media Access Control (MAC) layer (such as using MAC control unit messages), the RRC layer, etc. These reports or transmissions are received by the network / network nodes / network entities.

[0235] Configuration or instructions provided / transmitted by a network / network node to a wireless device via the physical (PHY) layer involve transmitting information via physical downlink channels (such as the physical downlink control channel (PDCCH)). The PDCCH carries downlink control information to the wireless device. A single PDCCH transmission may include DCI in a predetermined or configured format. Configuration or instructions provided / transmitted by a network / network node / network entity to a wireless device via higher layers involve transmitting information to the wireless device using one or more MAC-CE messages or RRC signaling.

[0236] In this disclosure, the terms “network,” “network node,” and / or “network entity” may be used interchangeably wherever applicable, whenever and wherever applicable.

[0237] CSI configuration and acquisition of CSI-RS resource subsets

[0238] As mentioned above, in FR1, the number of antenna ports operated by a network node (e.g., a base station / gNB) is proportional to the number of operating power amplifiers / analog beamforming networks / RF links. Downlink transmissions of PDSCH and PDCCH are typically performed with reference to CSI-RS resources; that is, DL transmissions are usually performed via the same antenna ports / panels / elements used for transmitting reference CSI-RS resources. The number of ports referencing CSI-RS resources is proportional to the number of operating RF links / power amplifiers / analog devices, and therefore proportional to the power consumption of the network node. Therefore, reducing the number of ports used for reference to CSI-RS resources will significantly reduce the power consumption of the network node, because all subsequent downlink transmissions referencing this CSI-RS resource will reduce the number of ports / RF links / analog devices used at the network node. An important aspect of this reduction is that the Quality of Service (QoS) required by the wireless devices / user equipment served by the network must be guaranteed or not significantly degraded. Therefore, a "sustainable" reduction in the number of ports is necessary.

[0239] This can be achieved through slower strategies, such as RRC reconfiguration of CSI-RS resources, and / or obtaining CSI feedback corresponding to different numbers / groups of CSI-RS resources at network nodes over a period of time and / or through multiple CSI feedback or reporting opportunities. These methods are inherently prone to high latency (which may lead to slower adaptation than rapidly changing network conditions in some scenarios) and / or high control information overhead. Therefore, dynamic and low-latency adaptation of network space elements is required via UE network signaling and / or collaboration, while simultaneously meeting various deployment use cases, energy-saving requirements, and network and UE capabilities.

[0240] One method for the base station to switch to different array subsets or fall back to a smaller subset of the antenna array is for the network to request CSI feedback for a specific subset or one or more port subsets associated with the DL resources used for measurement in order to calculate the CSI feedback.

[0241] In some embodiments, a method for wireless communication performed by a wireless device (user equipment) is provided, the method comprising:

[0242] o Receive at least from network nodes (e.g., gNB)

[0243] Channel State Information (CSI) reporting configuration via a higher layer (e.g., the Radio Resource Control (RRC) layer), wherein the CSI reporting configuration provides including At least one CSI reference signal (CSI-RS) resource per port is provided for measurement by wireless devices.

[0244] The signaling is transmitted via PHY layer (e.g., Physical Downlink Control Channel (PDCCH)) signaling and / or higher layer (e.g., RRC or Media Access Control (MAC) layer) signaling, for time-domain, frequency-domain, and / or spatial-domain resources and / or their associated parameters associated with at least one of the CSI-RS resources provided in the reporting configuration. Configuration or instructions performed on a subset

[0245] o Perform measurements on at least one CSI-RS resource provided by the CSI report configuration.

[0246] o Calculate and configure or indicate CSI-RS resources with network nodes At least one associated Channel State Information (CSI) and / or DL ​​transmission rate and / or one or more reliability-related parameters in each subset, and

[0247] Reports are transmitted to network nodes via the PHY layer or higher, including information about CSI-RS resources configured or indicated by the network nodes. At least one or more of the at least one associated computed parameters in each subset.

[0248] In some embodiments, the airspace resource associated with a CSI-RS resource is a port associated with the CSI-RS resource.

[0249] In some embodiments, the frequency domain resource associated with the CSI-RS resource is a physical resource block associated with the CSI-RS resource.

[0250] In some embodiments, the temporal resource associated with a CSI-RS resource is a symbol associated with the CSI-RS resource in a time slot / subframe / frame.

[0251] In some embodiments, the parameters associated with CSI are one or more of the following: Channel Quality Indicator (CQI), Modulation and Coding Scheme (MCS), Rank, Precoding Information (e.g., a type of precoding matrix indicator defined in the 3GPP specification), Reference Signal Received Power (RSRP), and Signal-to-Interference-plus-Noise Ratio (SINR).

[0252] In some embodiments, the parameters associated with the DL transmission rate are one or more of the following: spectral efficiency (which may be indicated by MCS, CQI and / or rank in some examples), throughput, transport block size, code rate, modulation order, and rank.

[0253] In some embodiments, the parameters related to DL transmission rate and / or reliability are block error rate (BLER) (e.g., BLER corresponding to one or more transport blocks or one or more code blocks) and / or BLER target.

[0254] In some examples, the value of a parameter can be represented as a difference relative to the same parameter from another resource or subset.

[0255] In some embodiments, the CSI reporting configuration provides at least one of the following:

[0256] - One or more non-zero power (NZP) CSI-RS resources for channel measurements.

[0257] - One or more zero-power (ZP) CSI-RS resources for interference measurements.

[0258] - One or more CSI Interference Management (CSI-IM) resources for interference measurement.

[0259] - One or more NZP CSI-RS resources for interference measurement.

[0260] In some examples, the CSI report configuration provides at least one or more NZP CSI-RS resources for channel measurements. In other examples, the CSI report configuration provides at least one or more NZPCSI-RS resources for channel measurements and one or more CSI-IM resources or ZP CSI-RS resources for interference measurements.

[0261] In some embodiments, the CSI reporting configuration includes time-domain, frequency-domain, and / or spatial-domain resources and / or their associated parameters associated with at least one of the CSI-RS resources provided by the reporting configuration. Configuration or indication of a subset.

[0262] In some embodiments, the network node provides the wireless device with time-domain, frequency-domain, and / or spatial-domain resources and / or their associated parameters associated with at least one CSI-RS resource via a MAC-CE message. Configuration or indication of a subset.

[0263] In some embodiments, the network provides the wireless device with configurations or indications via the PHY layer and / or higher layers of one or more parameters associated with at least one subset of CSI-RS resources, relating to channel state information (CSI) and / or DL ​​transmission rates and / or reliability that the wireless device should measure, calculate, and / or report. In some examples, this indication may be provided by a PDCCH, which includes a DCI (e.g., DCI format 0_0, 0_1, 0_2, 1_0, 1_1, or 1_2) for downlink or uplink scheduling formats. The patterns of bit fields in the DCI may be mapped to / indicate a predetermined (or higher-layer configured) set of one or more of these parameters.

[0264] In some embodiments, the CSI report configuration provides the time-domain, frequency-domain, and / or spatial-domain resources associated with the CSI-RS resources. One or more parameters to be measured, calculated, and / or reported from one or more subsets thereof, wherein these parameters may be related to channel state information (CSI) and / or DL ​​transmission rate and / or reliability.

[0265] In some embodiments, network nodes provide wireless devices with time-domain, frequency-domain, and / or spatial resources associated with CSI-RS resources via MAC-CE messages. An indication of one or more parameters to be measured, calculated, and / or reported in a subset.

[0266] In some embodiments, CSI reports are used to perform the reporting, wherein the wireless device transmits CSI reports on the Physical Uplink Shared Channel (PUSCH) or the Physical Uplink Control Channel (PUCCH).

[0267] In some embodiments, the wireless device is configured to execute the report in response to / associated with a CSI report configuration. The report is executed via the PHY layer and transmitted on the PUSCH or PUCCH.

[0268] In some embodiments, the wireless device is configured to execute the report via a MAC-CE message or via an RRC layer.

[0269] The above methods result in different possibilities for wireless device reporting and subset network configurations, each of which has its own impact on specifications and network / wireless device implementations.

[0270] Network signaling of subset related information

[0271] Networks are best suited to configuring subsets of CSI-RS resources, which can exist in the spatial, temporal, or frequency domains. From a network implementation perspective, a subset of CSI-RS resources corresponds to the subset the network wishes to reduce, i.e., a subset reduced from the current / original set of antenna ports / RF links / analog devices in the CSI-RS resources. In typical network implementations, using rectangular or linear subsets of antenna elements from the network node antenna arrays, along with their corresponding analog / RF link networks at the back end, facilitates the reuse of DFT / Walsh-Hadamard-based precoding in various standards (e.g., 5G NR, LTE, etc.). Therefore, the network can configure / indicate the "effective" subset within the CSI-RS resources, i.e., the set of CSI-RS spatial / temporal / frequency domain resources that constitute the subarray the network wishes to operate on.

[0272] In some embodiments, the wireless device is configured to receive higher-layer configuration or indications via a MAC-CE message or the PHY layer: associated with at least one CSI-RS resource. A subset of ports.

[0273] In some embodiments, the wireless device is configured to receive higher-layer configuration or indications via a MAC-CE message or the PHY layer: time and / or frequency resources associated with at least one CSI-RS resource. A subset.

[0274] Port-based (i.e., spatial-based) subset configuration of CSI-RS resources facilitates the direct configuration of subarrays whose pilot distribution is identical to that of the CSI-RS resource in bandwidth and / or symbols. Time-domain / frequency-domain-based subset configuration can help reduce the number of CSI-RS resource ports, reduce the bandwidth of the CSI-RS resource, or reduce subset duplication or time-domain binding. For example, CSI-RS resource ports can be distributed across different symbols; the selection of a symbol subset of the CSI-RS resource will lead to the selection of a subset of CSI-RS resource ports. In some other examples, selecting a subset of PRBs associated with the CSI-RS resource will mean a reduction in CSI-RS bandwidth. Selecting / configuring such subsets can help reduce DL operating bandwidth, which may also have some energy-saving effects.

[0275] In some embodiments, each subset of configurations or indications associated with a CSI-RS resource is provided with or associated with an identifier / index / indicator.

[0276] In some embodiments, the wireless device is configured to receive higher-level configurations or indications associated with a subset of CSI-RS resources via a MAC-CE message or a PHY layer, wherein the configuration / indication includes at least one bitmap with a length equal to any of the following values:

[0277] - The number of ports configured in the CSI-RS resource.

[0278] - The number of physical resource blocks associated with the CSI-RS resource.

[0279] - The number of symbols associated with the CSI-RS resource.

[0280] The port / PRB / symbol selected via the bitmap can configure / indicate a subset of CSI-RS resources.

[0281] In some embodiments, the UE is configured to receive configurations or indications of one or more parameters associated with at least a subset of CSI-RS resources from a network node via the PHY layer and / or higher layers. In some examples, the parameters may be at least one of the following:

[0282] • A “silent” mode for a subset associated with the CSI-RS resource, wherein the mode indicates or configures one or more of the following: port set, code division / time division / frequency division multiplexing mode.

[0283] • The codebook / array / panel configuration associated with the subset.

[0284] • One or more parameters associated with the computation of the precoder associated with the subset (e.g., subband configuration, size of one or more base sets used for precoder computation, etc.).

[0285] When a network node configures / indicates a subset to the UE, it can also provide the UE with parameters related to the subset for calculating or reporting the CSI associated with that subset.

[0286] In some embodiments, the wireless device is configured to receive higher-layer configurations or indications via a MAC-CE message or the PHY layer, including codebook / precoding configurations or at least one or more parameters associated with the codebook / precoding configurations, for measuring, calculating, and / or reporting one or more parameters related to CSI and / or DL ​​transmission rates or reliability associated with at least one subset of the CSI-RS resources. In some examples, the parameters associated with the codebook configuration may be at least one of the following:

[0287] • Codebook type (e.g., 3GPP codebook, such as Type I, Type II, Enhanced Type II, Multi-panel Type I, Port Selection Type, etc.).

[0288] • Dimensions used to compute / select / evaluate codebook or precoded information (e.g., variables N1 / N2 used to indicate the dimensions of DFT / Walsh-Hadamard precoded vectors / matrices).

[0289] • The size / dimension of CSI parameters involved in precoding information calculation (e.g., quantization values / coefficients, bitmaps, number of coefficients for channel / precoder parameters, etc. in CSI).

[0290] • Used to calculate the number or size of subbands in precoded information.

[0291] Types of subsets of CSI-RS resource configuration

[0292] In the above method, CSI-RS resources may correspond to antenna ports associated with the entire antenna array, while subsets may be associated with different (overlapping or non-overlapping) subarrays of the antenna array. Figure 7 and Figure 8 The image shows two examples of CSI-RS resources and subset configurations (with non-overlapping subarrays) for base station antenna arrays.

[0293] Figure 7 The first example of a CSI-RS resource (see CSI-RS1) is shown. There are four subsets here: RS1-S1, RS1-S2, RS1-S3, and RS1-S2. This means that the ports of the CSI-RS1 resource are subdivided into four subarrays.

[0294] Figure 8 One configuration is shown in which the ports of the CSI-RS2 resource are subdivided into three subarrays RS2-S1, RS2-S2 and RS2-S3.

[0295] In some embodiments, the wireless device is configured to receive higher-layer configuration or instructions via a MAC-CE message or the PHY layer, including those associated with at least one CSI-RS resource. Each subset comprises the same number of ports, and the number of ports associated with a subset is less than the number of ports configured for the associated CSI-RS resource.

[0296] In some embodiments, the wireless device is configured to receive higher-layer configuration or instructions via a MAC-CE message or the PHY layer, including those associated with at least one CSI-RS resource. A subset, wherein at least one subset is associated with a different number of ports and / or a different set of ports than at least one other subset, and the number of ports associated with the subset is less than the number of ports configured for the associated CSI-RS resource.

[0297] Similarly, when subsets are configured based on subsets of time-domain / frequency-domain resources, the following types of subsets may exist.

[0298] In some embodiments, the wireless device is configured to receive higher-layer configuration or indications via MAC-CE messages or the PHY layer, including those associated with at least one CSI-RS resource. A subset, wherein all subsets comprise the same number of physical resource blocks and / or symbols, and the number of physical resource blocks and / or symbols associated with a subset is less than the number configured for the associated CSI-RS resource.

[0299] In some embodiments, the wireless device is configured to receive higher-layer configuration or indications via MAC-CE messages or the PHY layer, including those associated with at least one CSI-RS resource. A subset, wherein the number or set of physical resource blocks and / or symbols associated with at least one subset differs from at least one other subset, and the number of physical resource blocks and / or symbols associated with the subset is less than the number configured for the associated CSI-RS resource.

[0300] UE feedback to different subsets

[0301] If the network receives feedback on multiple subsets of the CSI-RS resources, the decision on which subarray to use for DL ​​transmission may depend on the network. There are several possibilities for wireless devices to report CSI on multiple subsets. In one possibility, the network can collect detailed CSI reports on each subset, obtaining one or more CSI parameters.

[0302] In some embodiments, the wireless device is configured to measure, calculate, and / or report to the network node via the PHY layer or higher one or more parameters related to CSI and / or DL ​​transmission rates and / or reliability associated with a K subset of CSI-RS resources, wherein .

[0303] In some embodiments, the UE is configured to measure, calculate, and / or report to network nodes information associated with CSI-RS resources. At least one of the following parameters associated with one or more subsets:

[0304] - Broadband or subband CQI value

[0305] - Precoding matrix indicator or related information about the precoding matrix indicator

[0306] - Rank indicator

[0307] - Layer Indicator

[0308] In some embodiments, value

[0309] • Configured by the network

[0310] ·equal , and / or

[0311] • It is fixed in the standard.

[0312] The set of parameters to be measured, calculated, and / or reported, along with their associated settings (wideband / subband, precoding type, codebook-related details, etc.), can be configured by the network node to the wireless device (e.g., in CSI reporting configuration).

[0313] In some embodiments, The value is determined by the wireless device. In some examples, the wireless device can use... The maximum value is indicated by the network, is fixed in the specification, and / or equal to .

[0314] In some embodiments, the report provided by the wireless device may include at least the following:

[0315] • Associated with at least one CSI-RS resource The identifier of each subset, where .

[0316] For each subset, one or more of the following parameters are included:

[0317] oBroadband or subband CQI value,

[0318] o Precoding matrix indicator or related information about the precoding matrix indicator,

[0319] rank indicator,

[0320] o-layer indicator.

[0321] Providing detailed CSI reports for each subset would obviously result in extremely high uplink control information (UCI) overhead. Furthermore, if the network ultimately selects only one subset for deep link transmission, detailed feedback about the other subsets is useless information. Therefore, a second approach involving a two-step procedure is proposed:

[0322] - Wireless devices are first targeted Each subset in the set reports "representative information".

[0323] -Based on representative information reported by the UE, the network only targets A detailed CSI request is made from a subset of requests.

[0324] The "representative information" in the above method can be a performance metric or measurement for each subset. Based on this report, the network can determine which subset provides the expected balance between performance and / or energy saving and / or meets scheduling and / or traffic conditions. Subsequently, the network requests detailed CSI information about said subset from the wireless devices.

[0325] In some embodiments, the wireless device is configured to measure, calculate, and / or report information associated with CSI-RS resources to network nodes via the PHY layer or higher. At least one of the following parameters associated with one or more subsets, wherein :

[0326] - Performance / Measurement Metrics

[0327] - A differential or relative performance / measurement metric calculated relative to the same metric associated with the CSI-RS resource.

[0328] - Relative to the CSI-RS resource Differential or relative performance / measurement metrics that are computed in association with the same metric in a subset.

[0329] The value is determined by the network configuration and equal to Or it may be fixed in the specification. In some examples, The value is determined by the wireless device. The above performance / measurement metrics can provide relevant information about CSI and / or DL ​​transmission rate and / or reliability associated with the physical DL channel.

[0330] In some embodiments, the performance / measurement metrics and / or differential / relative performance / measurement measures that the wireless device measures, calculates, and / or reports to the network node via the PHY layer or higher are at least one of the following:

[0331] - Reference signal received power (RSRP) or differential RSRP,

[0332] - Signal-to-interference plus-noise ratio (SINR) or differential SINR,

[0333] - Index / indicator of modulation and coding scheme (MCS) or differential MCS index / indicator,

[0334] - Channel Quality Indicator / Index (CQI) or Differential CQI,

[0335] - Values / differential values ​​(or indicators of values / differential values) of any other parameter related to throughput / spectral efficiency, data rate, or reliability.

[0336] - Rank or difference rank value / indicator

[0337] - BLER or differential BLER value / indicator.

[0338] In some embodiments, the wireless device reports Each of the subsets is reported using the same set of one or more parameters.

[0339] By reporting one of the above parameters associated with the subset (the measured or realized RSRP / SINR / data rate / BLER of the subset, which may be in absolute value or compared with a “reference” CSI-RS resource or a “reference” subset of CSI-RS resources), the network may be able to determine whether a particular subset is suitable for the current scheduling and / or traffic conditions, and / or whether it meets the QoS requirements of one or more UEs connected to the network.

[0340] In some examples, the strength of the links / potential Rx threshold for a subset of CSI-RS resources can be assessed simply by reporting the (differential) RSRP or SINR values ​​for that subset. However, this value may be insufficient to determine the QoS provided by the CSI-RS resource subset. Similarly, the (differential) BLER value of a subset can be used to measure its reliability, while the rank can be used to measure its spatial multiplexing capability. Reporting only the (differential) CQI / MCS values ​​of a subset provides incomplete information—only by combining the rank and / or precoder can the base station roughly estimate the achievable data rate / throughput / BLER. Therefore, combining certain parameters can convey useful information for network scheduling decisions.

[0341] In some embodiments, the wireless device is configured to measure, calculate, and / or report at least two of the following parameters associated with one or more subsets of CSI-RS resources via a higher-level PHY layer:

[0342] - Index / indicator of modulation and coding scheme (MCS) or differential MCS index / indicator,

[0343] - Channel Quality Indicator / Index (CQI) or Differential CQI,

[0344] - Rank or difference rank value / indicator

[0345] - BLER or differential BLER value / indicator.

[0346] When a UE reports a relative or differential performance metric associated with a subset of CSI-RS resources, that metric must be calculated with reference to the same performance metric used to calculate the associated CSI-RS resources (which may also be reported separately). In some examples, the relative or differential performance metric reported by the UE associated with a subset of CSI-RS resources must be calculated with reference to the same performance metric used to calculate another subset of those CSI-RS resources.

[0347] In some embodiments, the wireless device is configured to measure, calculate, and / or report information associated with CSI-RS resources to network nodes via the PHY layer or higher. One or more parameters related to CSI and / or DL ​​transmission rate and / or reliability associated with a subset of resources, and one or more parameters related to CSI and / or DL ​​transmission rate and / or reliability associated with CSI-RS resources. In some examples, the parameters related to CSI-RS resources... The values ​​of one or more parameters associated with a subset are reported relative to the values ​​of the same parameters associated with the CSI-RS resource (or as their differences).

[0348] In some embodiments, the report provided by the wireless device may include at least the following:

[0349] • Associated with at least one CSI-RS resource The identifier of each subset, where .

[0350] • For each subset, it includes one or more parameters related to CSI and / or DL ​​transmission rate and / or reliability associated with the physical downlink channel.

[0351] In some embodiments, the report provided by the wireless device may also include one or more parameters related to CSI and / or DL ​​transmission rates and / or reliability associated with the CSI-RS resource, as well as information regarding the CSI-RS resource. Information about a subset.

[0352] In one example, the report includes a CSI-RS Resource Indicator (CRI) indicating the CSI-RS resource, and one or more parameters related to CSI and / or DL ​​transmission rates and / or reliability associated with the CSI-RS / CRI. In some other examples, the report does not include a CRI, but includes one or more parameters related to CSI and / or DL ​​transmission rates and / or reliability associated with the CSI-RS resource. In this case, the CSI report configuration associated with the report from the wireless device includes only one CSI-RS resource for channel measurements.

[0353] In variations of the above methods or reports, the reported subsets can be sorted based on decreasing or increasing values ​​of the performance or measurement metrics associated with the subsets.

[0354] In some embodiments, the wireless device provides in the report Each subset is sorted in ascending or descending order based on a specific performance or measurement metric. In some examples, Each subset is ordered based on at least one of the following:

[0355] • The loss in throughput / data rate / spectral efficiency increases / decreases.

[0356] • BLER gain increment / decrement.

[0357] • Increasing / decreasing of CQI / MCS values ​​and / or rank values.

[0358] In some embodiments, the wireless device is configured to measure, calculate, and / or report to the network node via the PHY layer or higher a subset of resources associated with the CSI-RS resources, relative to other resources provided in the report. Differential or relative performance / measurement metrics that are computed in association with the same metric in a subset.

[0359] In some embodiments, the wireless device is configured to measure, compute, and / or report to the network node via the PHY layer or higher a differential or relative performance / measurement metric associated with a subset of CSI-RS resources, relative to the same metric computed in association with a subset provided before / after in the report.

[0360] The above method does not restrict reporting on different subsets / subarrays; that is, it can report a set of subsets of CSI-RS resources based on the UE's specific decisions, while completely omitting information about certain subarrays. Restricting the reported subarray types helps the gNB obtain information about the optimal subarray within a given subarray group. For example, for a CSI-RS resource with 32 ports, the gNB can configure a total of four subsets, with two subsets each having 8 ports and the other two subsets each having 16 ports. If the UE only reports the subsets with 8 ports or 16 ports, the gNB may be completely unaware of the performance of the other subsets.

[0361] In some embodiments, the CSI-RS resources exist as described A subset Each group, in which wireless devices should provide network nodes with information about CSI-RS resources in their reports. ( ) A subset of parameters associated with CSI and / or DL ​​transmission rate and / or reliability, wherein in Individuals are concentrated, when hour

[0362] • At least two subsets belong to two different groups, or

[0363] Each subset belongs to a different group.

[0364] In some embodiments, Groups are determined by network node configuration or by predetermined / fixed parameters associated with subsets.

[0365] In some embodiments, the UE reports one or more of the parameters for a subset "S" within a subset group comprising two or more subsets, wherein the subset "S" performs "best" in one or more parameters related to CSI and / or DL ​​transmission rate and / or reliability compared to other subsets in the group. In some examples, the parameters used to perform the performance comparison are at least one of the following: BLER, CQI, MCS, rank, throughput, spectral efficiency, RSRP, and / or SINR.

[0366] In some embodiments, the wireless device is configured to receive an indication of a Transmission Configuration Indication (TCI) state, which includes one or more DL / UL reference signals and one or more associated quasi-colocation (QCL) types for reception, measurement, and / or computation related to at least one subset of CSI-RS resources.

[0367] QCL type indicates the set of parameters to be derived and / or applied to channel or reference signal reception and / or transmission based on DL / UL reference signals. RS or physical downlink / uplink channels may be provided with Transmission Configuration Indication (TCI) states, which include one or more RSs associated with one or more QCL types. For example, CSI-RS resource “A” and associated QCL type “X” may indicate that the wireless device should use Doppler frequency shift / spreading and / or delay spreading values ​​obtained from CSI-RS “A” to receive or transmit the channel or RS. In another example, SSB “B” and associated QCL type “Y” may indicate that the wireless device should use an Rx spatial filter for receiving SSB “B” to determine the spatial filter for receiving or transmitting the channel or RS. TCI states may provide one or more QCL types or settings for UL / DL channels and / or RSs.

[0368] In one example, subsets with the same time, frequency, and / or number of spatial resources are included in the same group.

[0369] In another example, subsets with the same TCI state are included in the same group.

[0370] UE selects a subset for reporting

[0371] If the above parameter reporting is performed for multiple subsets, the network can ultimately determine a suitable subset of CSI-RS resources to use as a reference for upcoming DL transmissions. However, if the UE does not report all configured subsets of CSI-RS resources, the UE also participates in the decision-making process to some extent. In cases where the radio device selects and reports only one subset, this means the decision of which subset to use rests entirely with the UE. The UE can optimize its reporting based on predetermined or indicated performance / metrics. Since the UE best understands the reception conditions and its own processing capabilities, leaving the decision-making power to the radio device saves uplink control information and downlink probing overhead.

[0372] In some embodiments, the wireless device measures, calculates, and / or reports to the network node via the PHY layer or higher one or more parameters related to a channel state information (CSI) and / or DL ​​transmission rate and / or reliability associated with a subset of P resources configured or indicated by the network node for CSI-RS resources.

[0373] like Figure 6 and Figure 7 As illustrated in the examples, subset sizes (number of ports or associated time / frequency resources) can be the same or different. If a wireless device reports CSI for one or more subsets, the subset selected for reporting can be based on one or more CSI or DL ​​performance metrics as described above. When subset sizes are different, the metrics used for reporting subsets may always favor subsets allocated more time / frequency / spatial resources. For example, a subset with more ports may always provide higher RSRP, rank, and / or throughput compared to a subset with fewer ports. Similarly, when using CSI-RS resources whose bandwidth is a subset of another CSI-RS resource, resources with smaller bandwidth are always at a disadvantage in terms of throughput. Methods for fair evaluation of asymmetric subsets by wireless devices are discussed below.

[0374] In some embodiments, the wireless device is configured to receive one or more parameters from a network node via a PHY layer or higher, these parameters being used for at least one of the following:

[0375] - Select the CSI-RS reporting resource subsets of a subset and one or more parameters,

[0376] - Computation and Subsets One or more parameters related to the associated CSI and / or DL ​​transmission and / or DL ​​transmission rate and / or reliability.

[0377] In some embodiments, the wireless device is configured to receive, via the PHY layer or higher, at least one value of a threshold for parameters related to CSI, DL transmission rate, and / or reliability from the network node. If a subset If the value of the parameter is greater than at least one value of the threshold, the UE may choose to report a subset to the network node based on other conditions (if any). .

[0378] For example, a threshold for at least one of the following parameters can be provided for the UE: RSRP, SINR, throughput, BLER, spectral efficiency, and CQI / MCS. The threshold can also be indicated in a differential form. If for a subset... If the calculated parameters exceed the threshold, the UE can choose to configure CSI-RS resources. At least one other subset of the subset Report this parameter. Based on the parameter that defines the threshold, the UE can check whether this parameter should be greater than or less than the threshold of the subset to be reported.

[0379] Consider the second example, in the configuration for CSI-RS resources Sub-concentration There are subset groups, where the i-th group includes Each subset within a given group comprises the same number of time-domain, frequency-domain, and / or spatial resources. For example, each subset within a group may be associated with a different subarray at the base station, where all subarrays corresponding to that group are of equal size. Alternatively, each subset may be associated with a different set of PRBs associated with CSI-RS resources, but all subsets within the group have the same number of PRBs. Any two subsets from two different groups are not identical in the number of time-domain, frequency-domain, and / or spatial resources. For a specific parameter calculated by the UE for a subset of CSI-RS resources, at least one threshold should be provided to the UE. The parameters are placed in the j-th subset of group i (denoted as...). The calculated value is expressed as Without loss of generality, suppose the subsets (indicated by i) are sorted in ascending order of the number of time-domain, frequency-domain, and / or spatial-domain resources. If for any and any or Value, satisfying (or If so, the UE should select the reporting group. A subset of [something]. If there exist multiple [something] that satisfy the above inequality. If the value is specified, the UE should select to report and... The minimum value corresponds to a subset of the group. Both types of inequalities can be used for comparison because performance / measurement metrics can be "positive" or "negative." For example, throughput, CQI, rank, RSRP, SINR, etc., are classified as "positive" metrics because the higher the metric value for the subset, the better the performance. On the other hand, BLER is considered a "negative" metric because the lower the metric value for the subset, the better the performance.

[0380] In this way, the UE selects to report a subset of resources that exceed the threshold, thereby assisting the network in saving energy with minimal uplink control information overhead. The threshold can be a way for the network to ensure UE reliability or specific throughput / QoS.

[0381] In some embodiments, in order to measure, calculate, and / or report at least one parameter related to CSI, DL transmission rate, and / or reliability associated with a subset of CSI-RS resources, the wireless device

[0382] • Receive threshold from network nodes via the PHY layer or higher at least one value, or

[0383] • Known in advance (e.g., thresholds predetermined / fixed in the specification or known via the UE) At least one value.

[0384] In some embodiments, the wireless device reports at least an index / indicator / identifier to the network node via a higher-level PHY layer, wherein the value of the at least one parameter associated with the subset is greater than (or less than) a threshold. .

[0385] In one example, if the parameter is BLER, then the value of the parameter associated with the subset is less than a threshold. In another example, if the parameter is another parameter such as CQI / spectral efficiency / rank / data rate / throughput, the value of the parameter associated with the subset is greater than a threshold. .

[0386] Using the above set of thresholds, the subset reported by the UE is determined by comparing the threshold of the reported subset with other subsets (determined based on the amount of resources or the size of the implemented subset, such as based on the subset index).

[0387] In some embodiments, the wireless device is configured to report to the network node at least an index / indicator / identifier of a first subset associated with the CSI-RS resource, wherein at least one of the following conditions applies:

[0388] • The value of at least one parameter associated with the first subset is greater than (or less than) a predetermined, pre-configured, or configured threshold. ,

[0389] • Associated with CSI-RS resources The value of at least one parameter associated with at least one other subset within a subset is greater than (or less than) the threshold. Or different pre-set, pre-configured, or configuration thresholds ,in

[0390] The number / size / dimension of time-domain, frequency-domain, and / or spatial-domain resources associated with the first subset is less than the number / size / dimension of at least one other subset, and / or

[0391] The value of the parameter and the threshold The difference / deviation is higher (or lower) than the difference / deviation between the at least one other subset and its corresponding threshold, and / or

[0392] The index / indicator / identifier of the first subset is higher than / lower than the index / indicator / identifier of at least one other subset.

[0393] In some embodiments, the wireless device is configured to

[0394] -Received from network node

[0395] • Configuration or indication of two or more subsets of time-domain / frequency-domain and / or spatial-domain resources associated with CSI-RS resources via the PHY layer or higher, wherein

[0396] There exist two or more groups of subsets, each group comprising one or more subsets, wherein subsets of a given group comprise / occupy / are associated with the same amount of time, frequency, and / or spatial resources.

[0397] The number of subset associations / resources occupied by the first group is less than the number of subset associations / resources occupied by the second group, and the number of subset associations / resources occupied by the second group is less than the number of subset associations / resources occupied by the third group (if it exists), and so on.

[0398] - Report to the network nodes at least the index / indicator / identifier of the subset of the group associated with the CSI-RS resource, where

[0399] • The value of the parameter calculated by at least a subset of the group is greater than (or less than) a first threshold, and / or

[0400] • The group to which the subset belongs has the fewest time-domain / frequency-domain and / or spatial-domain resources among all subset groups, and the group has at least one subset whose parameter value is greater than (or less than) the first threshold or a different threshold.

[0401] In some embodiments, the UE reports to the network node at least the index / indicator / identifier of a subset of the group of subsets associated with the CSI-RS resources, wherein

[0402] • The value of the parameter calculated by at least a subset of the group is greater than (or less than) a first threshold, and / or

[0403] The subset belongs to a group that has the fewest time-domain / frequency-domain and / or spatial-domain resources among all subset groups, and that group has at least one subset whose parameter value is greater than (or less than) the first threshold or a different threshold, and / or

[0404] • Among the subsets within the group to which the subset belongs, the difference between the subset and the threshold is the highest or lowest.

[0405] In some embodiments, each subset associated with each subset group or CSI-RS resource may be configured or indicated with a separate threshold via the PHY layer or higher, and the reported subset is based on a comparison with the threshold configured / indicated for that subset or subset group.

[0406] In some embodiments, the wireless device measures, calculates, and / or reports to the network node via the PHY layer or higher, information configured or indicated by the network node for CSI-RS resources. One associated Channel State Information (CSI) and / or one or more parameters related to DL transmission rate and / or reliability in a subset.

[0407] In some examples, the report may include at least the following:

[0408] - Indexes / indicators / identifiers of the subset associated with the CSI-RS resource.

[0409] - At least one or more of the following parameters:

[0410] • Channel quality index / indicator value,

[0411] • Precoded matrix index / indicator information,

[0412] Rank indicator,

[0413] • Layer indicator.

[0414] In some other examples, the report may include at least the following:

[0415] - Indexes / indicators / identifiers of the subset associated with the CSI-RS resource.

[0416] - At least one or more of the following parameters:

[0417] • Performance / measurement metrics

[0418] • A differential or relative performance / measurement metric calculated relative to the same metric associated with the CSI-RS resource.

[0419] In some embodiments, the report may also include a CSI-RS Resource Indicator (CRI).

[0420] Information is configured and retrieved from multiple CSI-RS resources based on subsets.

[0421] In the above method, the UE receives a configuration of CSI-RS resources and one or more subsets, based on which it can provide feedback on the optimal subset for DL ​​transmission. Alternatively, the subset configured in the above method can also correspond to independent CSI-RS resources. With such configuration, the UE can provide a report similar to beamforming for one or more of the said CSI-RS resources to assist network nodes in subset selection. In another scenario, the UE can select a subset itself by reporting a single CRI.

[0422] In some embodiments, a wireless communication method performed by a wireless device (user equipment) is proposed, the method comprising:

[0423] - The configuration receives at least Channel State Information (CSI) reports from network nodes via a higher layer, wherein the CSI report configuration provides at least two or more CSI-RS resources for wireless devices to perform channel measurements, and each CSI-RS resource is configured with one or more ports.

[0424] - Perform a measurement on at least one of the CSI-RS resources.

[0425] - Calculate one or more parameters related to the Channel State Information (CSI) and / or DL ​​transmission rate and / or reliability associated with at least one of the CSI-RS resources, and

[0426] - Transmit a report to the network node via the PHY layer or higher, the report including at least one or more calculated parameters associated with at least one of the CSI-RS resources.

[0427] In some embodiments, the UE is configured with One CSI-RS resource is used for channel measurements.

[0428] In some embodiments, the CSI report configuration provides one or more CSI-IM resources or ZP CSI-RS resources for interference measurement.

[0429] In some embodiments, CSI reports are used to perform the reporting, wherein the CSI reports are transmitted by the wireless device on the Physical Uplink Shared Channel (PUSCH) or the Physical Uplink Control Channel (PUCCH).

[0430] In some embodiments, the wireless device is configured to execute the report in response to / associated with a CSI report configuration. The report is executed via the PHY layer and transmitted on the PUSCH or PUCCH.

[0431] In some embodiments, the wireless device is configured to execute the report via a MAC-CE message or via an RRC layer.

[0432] In some embodiments, the wireless device is configured to receive higher-layer configurations or indications via MAC-CE messages or the PHY layer, including codebook configurations or at least one or more parameters associated with the codebook configuration, for measuring, calculating, and / or reporting at least one associated CSI and / or DL ​​transmission rate and / or reliability-related parameters in CSI-RS resources related to channel measurements. In some embodiments, the wireless device is configured to report to network nodes via the PHY layer or higher. One or more parameters related to CSI and / or DL ​​transmission rate and / or reliability associated with each CSI-RS resource, wherein .

[0433] In some embodiments, the UE is configured to measure, calculate, and / or report to network nodes. At least one of the following parameters associated with one or more CSI-RS resources:

[0434] - Broadband or subband CQI value

[0435] - Precoding matrix indicator or related information about the precoding matrix indicator

[0436] - Rank indicator

[0437] - Layer Indicator

[0438] In some embodiments, .

[0439] In some embodiments, the wireless device is configured to measure, calculate, and / or report to network nodes via the PHY layer or higher. At least one of the following parameters associated with at least one of the CSI-RS resources, wherein :

[0440] - Performance / Measurement Metrics

[0441] - Compared to targeting Differential or relative performance / measurement metrics calculated from at least one of the configured CSI-RS resources.

[0442] In some embodiments, the performance / measurement metric and / or differential / relative performance / measurement metric measured, calculated, and / or reported to the network node via the PHY layer or higher, relative to one or more CSI-RS resources, is at least one of the following:

[0443] - Reference signal received power (RSRP) or differential RSRP,

[0444] - Signal-to-interference-plus-noise ratio (SINR) or differential SINR,

[0445] - Index / indicator of modulation and coding scheme (MCS) or differential MCS index / indicator,

[0446] - Channel Quality Indicator / Index (CQI) or Differential CQI,

[0447] - A throughput / spectral efficiency value / differential value (or an indicator of the value / differential value) or any other parameter related to data rate or reliability.

[0448] - Rank or rank value / indicator

[0449] - BLER or differential BLER value / indicator.

[0450] In some embodiments, the wireless device is configured to measure, calculate, and / or report at least two of the following parameters associated with one or more CSI-RS resources:

[0451] - Index / indicator of modulation and coding scheme (MCS) or differential MCS index / indicator,

[0452] - Channel Quality Indicator / Index (CQI) or Differential CQI,

[0453] - Rank or difference rank value / indicator

[0454] - BLER or differential BLER value / indicator.

[0455] In some embodiments, network nodes provide wireless devices with configurations or indications of channel state information (CSI) associated with at least one CSI-RS resource and / or one or more parameters related to DL transmission rate and / or reliability that the wireless device should report, via a higher-level PHY layer.

[0456] In some embodiments, the report provided by the wireless device may include at least the following:

[0457] · Indexes / indicators / identifiers of CSI-RS resources, among which .

[0458] • For each CSI-RS resource, there are one or more parameters related to the CSI and / or DL ​​transmission rate and / or reliability associated with the physical downlink channel.

[0459] In some embodiments, the wireless device reports Each of the subsets contains the same set of one or more parameters.

[0460] In some examples, the report does not include CRI, but includes one or more parameters related to CSI and / or DL ​​transmission rate and / or reliability associated with the CSI-RS resource. In this case, the CSI report configuration associated with the report from the wireless device includes only one CSI-RS resource for channel measurements.

[0461] In some embodiments, in order to calculate and / or report at least one parameter related to CSI, DL transmission rate, and / or reliability associated with CSI-RS resources, the wireless device

[0462] • Receive threshold from network nodes via the PHY layer or higher at least one value, or

[0463] • Known in advance (e.g., predetermined / fixed in the specification or known through UE implementation) thresholds At least one value.

[0464] In some embodiments, the wireless device reports at least the index / indicator / identifier of the CSI-RS resource to the network node via a higher-level PHY layer, wherein the value of the at least one parameter associated with the resource is greater than (or less than) a threshold. .

[0465] Using the above set of thresholds, the subset reported by the UE is determined by comparing the threshold of the reported resource with other resources (based on the resource quantity or the subset size determined by the subset index, etc.).

[0466] In some embodiments, the wireless device is configured to report at least one index / indicator / identifier of a first CSI-RS resource to the network node, wherein at least one of the following conditions applies:

[0467] • The value of at least one parameter associated with the first CSI-RS resource is greater than (or less than) a threshold. ,

[0468] ·and The value of at least one parameter associated with at least one other CSI-RS resource in the resource is greater than (or less than) a threshold. Or different pre-set, pre-configured, or configuration thresholds ,in

[0469] The number / size / dimension of time-domain, frequency-domain, and / or spatial-domain resources associated with the first CSI-RS resource is less than the number / size / dimension of the at least one other CSI-RS resource, and / or

[0470] The difference / deviation of the value of the parameter associated with the first CSI-RS resource from its threshold is higher than (or lower than) the difference / deviation between the at least one other CSI-RS resource and its corresponding threshold, and / or

[0471] The index / indicator / identifier of the first CSI-RS resource is higher than / lower than the index / indicator or identifier of the at least one other CSI-RS resource.

[0472] In some embodiments, the CSI report configuration provides The CSI-RS resources exist in the channel measurement CSI-RS resources. A subset, in which wireless devices should provide at least [number] reports to network nodes. The index / indicator / identifier of a resource, where, when hour

[0473] The report provides at least one resource from each subset of resources, or

[0474] • At least two resources provided in the report belong to two different subsets.

[0475] In some embodiments, the UE reports one or more of the parameters for a CSI resource "X" comprising a subset of two or more resources, wherein resource "X" performs "best" in one or more parameters related to CSI and / or DL ​​transmission rate and / or reliability compared to other resources in the subset. In some examples, the parameters used for performance comparison are at least one of the following: BLER, CQI, MCS, rank, throughput, spectral efficiency, RSRP, and / or SINR.

[0476] Enhanced beam management via DL RS transmission

[0477] Configure the flexible number of beams in UE reports

[0478] In the following embodiments, an improved UE beam reporting based on measurements performed on receive DL resources (e.g., CSI-RS or SSB) configured for beam management can be proposed. This means enhancing the previously introduced P2 procedure so that the gNB can better optimize its beaming for improved energy efficiency by forming beams through a subset of the antenna array.

[0479] It should be noted that in FR2, the gNB and UE need to establish a connection via spatially selective or directional beamforming at both the transmitter and receiver sides, requiring a large number of antenna elements for each virtual antenna port. It should also be noted that while the gNB can significantly save energy by minimizing the number of active antenna elements, this in turn reduces beamforming quality or antenna gain in a given direction.

[0480] During the beam scanning step, the gNB is free to enable any subset of the total available set (applicable to a given number of virtual antenna ports or CSI-RS ports). To enable the gNB to better balance UE signal quality and network power efficiency when selecting beams, we recommend enhancing beam reporting signaling from the UE based on CSI-RS-based measurements.

[0481] In some embodiments, a method for wireless communication performed by a wireless device (user equipment) is provided, the method comprising:

[0482] • Receive channel state information reports from network nodes via higher layers, wherein the reporting configuration provides at least two or more CSI-RS and / or SSB resources for wireless devices to perform channel measurements.

[0483] • Perform a measurement on at least one of the resources, and

[0484] • Report one or more RS indexes / indicators / identifiers via the PHY layer and / or higher.

[0485] In some embodiments, the reporting is performed on the PUSCH or PUCCH via the PHY layer. That is, the reporting is a CSI / beam report associated with a CSI reporting configuration.

[0486] In some embodiments, the wireless device is provided with One CSI-RS / SSB resource is used for channel measurements.

[0487] In some embodiments, the report includes The index / indicator / identifier of each DL RS resource (such as CRI and / or SSBRI), and the L1-RSRP and / or L1-SINR values ​​(or differential L1-RSRP and / or differential L1-SINR) associated with each resource, wherein In some examples, The value is configured by the network.

[0488] In some embodiments, the network node configures the wireless device to report according to L1-RSRP and / or L1-SINR. The "best" beam / resource, i.e., the one reported by the wireless device with the highest L1-RSRP or L1-SINR. One beam / resource.

[0489] In some embodiments, the wireless device reports Each of the RSs is associated with at least one different RS or RS resource of quasi-co-located (QCL) type.

[0490] In some embodiments, the wireless device uses different spatial reception filters or is indicated with different TCI states to receive and / or measure the reported signals. At least two distinct RSs out of a total of RSs.

[0491] Regarding network energy saving, the benefits are as follows:

[0492] The gNB can configure CSI-RS resources for L1-RSRP and / or L1-SINR measurements and receive beam information reported by user equipment via multiple DL Tx beams. These DL Tx beams can be shaped not only in different spatial directions of a given set of antenna elements, but also multiple beams can be formed using different subsets of antenna elements in each given direction (or near it).

[0493] To enable gNB beamforming, the UE should be configured to report more DL Tx beam indices and their corresponding L1-RSRP and / or L1-SINR values ​​than currently possible; currently, only a maximum of four reports are supported from measurements of multiple received CSI-RS resources. This enhancement to beam reporting can improve the gNB's Tx beam refinement and / or energy optimization process, allowing it to better consider the trade-off between network energy saving and user performance when selecting the optimal beam to serve the user.

[0494] Configure flexible DL RS resource subsets for UE

[0495] In some embodiments, there are CSI-RS resources A subset, wherein the wireless device shall provide the network node in the report with one or more indices / indicators / identifiers of CSI-RS resources, and one or more parameters related to the RSRP or SINR measurement associated with said subset, wherein

[0496] The report provides at least one resource from each subset, or

[0497] • At least two resources provided in the report belong to two different subsets.

[0498] In some embodiments, The CSI-RS resource set Each subset is configured by the network nodes.

[0499] In some embodiments, based on the L1-RSRP and / or L1-SINR measurements performed by each CSI-RS resource, for the... The index of each subset is reported. The wireless device performs measurements on the resources transmitted by the network nodes.

[0500] In some embodiments, the report may also include corresponding measurements of the L1-RSRP and / or L1-SINR measurements.

[0501] In some embodiments, the wireless device is configured to receive an indication of a Transmission Configuration Indication (TCI) state, which includes one or more DL / UL reference signals and one or more quasi-co-location types associated therewith, for receiving and / or measuring CSI-RS resources.

[0502] In some embodiments, Each CSI-RS resource group is The operation of a subset is performed by the wireless device or network node based on one or more common attributes among the subsets (or as a fixed method in the specification).

[0503] In one example, resources with the same time, frequency, and / or spatial quantity are included in the same subset.

[0504] In another example, resources with the same TCI status are included in the same subset.

[0505] In the third example, resources that share the same RS (e.g., via QCL settings / TCI status indication settings) to derive the Rx spatial filter are included in the same group.

[0506] In some embodiments, the CSI report configuration provides The CSI-RS resources exist in the channel measurement CSI-RS resources. A subset, in which wireless devices should provide at least [amount] to network nodes in the report. The index / indicator / identifier of a resource, where, when hour

[0507] • The report provides at least one resource from each subset of resources, or

[0508] • At least two resources provided in the report belong to two different subsets.

[0509] The CSI-RS or SSB resources provided by network nodes to wireless devices / wireless device measurements can correspond to (downlink) beams, i.e., Tx spatial filters or spatial directions. Therefore, in this disclosure, the term "beam" can be used interchangeably with "resource".

[0510] In some embodiments, the wireless device is configured to report one or more parameters related to CSI and / or DL ​​transmission rates and / or reliability associated with the resource.

[0511] In some embodiments, the wireless device is configured to report the L1-SINR or L1-RSRP value (or differential L1-SINR / RSRP value) associated with each resource provided in the report.

[0512] Beam degradation procedure and associated signaling

[0513] In other embodiments, a novel procedure and associated enhanced beam reporting (“CRI-RSRP”, or “SSB-index-RSRP” in the case of SSB measurements) are proposed. Specifically, a beam degradation process performed by the gNB is proposed through novel reporting rules and their configuration. During this beam degradation process, the gNB configures CSI-RS resources for UE measurements and configures alternative rules for beam reporting in network power-saving mode. For simplicity, the beam degradation process will be referred to as “P4” thereafter. Typically, these CSI-RS resources will be associated with beams in or near the DL Tx direction, but using a different number of spatial elements. However, in the report, the UE does not report the best beam (as shown in P2), but instead reports bad / poor beams (lower / lowest RSRP / SNR) that are still above a certain RSRP / SINR threshold, which is part of the configuration. Essentially, in P4, the gNB attempts to find a sufficiently good beam in a certain direction. Based on this understanding, the gNB can decide to reduce the number of antenna elements and by how much. Candidate beams can be formed, for example, by changing the number of antenna elements.

[0514] If recovery from a small number of antenna elements to a large number of antenna elements is required, it may be necessary to select the optimal beam. Here, the P2 procedure and "CRI-RSRP / SNR" can be fully reused. However, to achieve a single configuration adaptable to all scenarios, a hybrid approach can be considered, i.e., reporting both the best beam and the worst beam exceeding a threshold. In this case, the reporting order can depend on the number of beams the UE is configured to report, for example:

[0515] • Best beam priority. If the UE needs to report 1 beam, report the best beam. If it needs to report 2 beams, report the best beam and the worst beam that exceeds the threshold. If it needs to report 4 beams, report two best beams and two worst beams that exceed the threshold.

[0516] • The worst beam above the threshold is prioritized. If the UE needs to report 1 beam, the worst beam above the threshold is reported. If it needs to report 2 beams, the worst beam above the threshold and the best beam are reported. If it needs to report 4 beams, the two worst beams above the threshold and the two best beams are reported.

[0517] This combined reporting can be controlled via more dynamic signaling (MAC CE or DCI), requiring only adjustments to the number of reported beams without changing the reporting configuration.

[0518] In some embodiments, the wireless device is configured to report to the network node via the PHY layer and / or higher layers. An index / indicator / identifier for a CSI-RS or SSB resource, where the reported resource is one of the following:

[0519] • In the configuration used for measurement The resource with the best L1-RSRP / SINR among the resources, or

[0520] • In the configuration used for measurement The resource with the lowest L1-RSRP / SINR and above the configured or predetermined / fixed threshold t.

[0521] In some embodiments, the wireless device is configured to report to the network node via the PHY layer and / or higher layers. An index / indicator / identifier for a CSI-RS or SSB resource, wherein the reported resource can be one of the following:

[0522] • In the configuration used for measurement The resources with the highest and lowest L1-RSRP / SINR, or

[0523] • When configured for The resource with the highest L1-RSRP / SINR among the measured resources and the resource with the lowest L1-RSRP / SINR that is above the configured or predetermined / fixed threshold. Resources.

[0524] In some embodiments, the wireless device is configured to report to the network node via the PHY layer and / or higher layers. An index / indicator / identifier for a CSI-RS or SSB resource, wherein the reported resource can be one of the following:

[0525] • In the configuration used for measurement The resource with the highest L1-RSRP / SINR One resource and having the lowest L1-RSRP / SINR One resource, of which ,or

[0526] • In the configuration used for measurement The resource with the highest L1-RSRP / SINR The resource has the lowest L1-RSRP / SINR and is above the configured or predetermined / fixed threshold. of One resource, of which .

[0527] DL beam management configured via SRS transmission

[0528] In the following embodiments, it is proposed to enhance beam management by means of UE UL transmissions and measurements performed by the gNB on received UL RS resources (e.g., SRS) configured for beam management. This means an enhancement to the U2 process previously described in the “Beam Management” section, enabling the gNB to better optimize its beam for improved energy efficiency by forming beams from a subset of elements of the antenna array (e.g., based on SRS transmissions via fixed UE beams).

[0529] In some embodiments, the UE can be configured by the network to transmit. One UL RS (such as SRS) is used for beam management, where

[0530] • The beam orientation and / or spatial relationship of the UL RS can be selected by the UE, for example, based on measurements from the DL RS or transmissions from the UL RS (e.g., the TCI status or spatial relationship of other UL RSs (which can be obtained from the UE detection process, such as U1)) or a combination of both, and / or

[0531] · By network configuration or instruction.

[0532] In some embodiments, the network can schedule repetition of the SRS beam to scan its Rx beam. The Rx beam may correspond to different sets of antenna elements and / or spatial orientations.

[0533] Measurements from Rx beam scanning (e.g., L1-RSRP / SINR) can help assess link gain and determine optimal beams on the network side. By performing UL beam scanning instead of DL beam scanning when beam correspondence exists between the UE and / or network nodes, the network can save energy and DL pilot overhead.

[0534] Figure 10 A simplified block diagram is shown depicting a wireless device or UE 1000 performing any of the above-described process or method steps associated with a wireless device or UE. The wireless device 1000 includes a processor 1010 or processing circuitry or processing module or processor device 1010; a receiver circuitry or receiver module 1040; a transmitter circuitry or transmitter module 1050; a memory module 1020; and a transceiver circuitry or transceiver module 1030, which may include the transmitter circuitry 1050 and the receiver circuitry 1040. The wireless device 1000 also includes an antenna system 1060, which includes antenna circuitry for transmitting and receiving signals to / from at least a network node or other wireless device. The antenna system employs beamforming technology as described above.

[0535] The wireless device 1000 can employ any wireless access technology, including 4G or LTE, LTE-A, 5G, enhanced 5G, or combinations thereof. They may also support beamforming technology. The wireless device, including a processor and memory, contains instructions executable by the processor, thereby enabling the wireless device 1000 to operate or be configured to perform any of the embodiments associated with the wireless device as described above.

[0536] Processing module / circuit 1010 includes a processor, microprocessor, application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), etc., and may be referred to as a "processor". Processor 1010 controls the operation of the wireless device and its components. Memory (circuit or module) 1020 includes random access memory (RAM), read-only memory (ROM), and / or other types of memory to store data and instructions usable by processor 1010. Generally, it should be understood that in one or more embodiments, wireless device 1000 includes fixed or programmable circuitry configured to perform the operations of any of the embodiments disclosed herein.

[0537] In at least one such example, processor 1010 includes a microprocessor, microcontroller, DSP, ASIC, FPGA, or other processing circuitry configured to execute computer program instructions stored in or accessible to a non-transient computer-readable medium. Here, "non-transient" does not necessarily mean permanent or immutable storage; it may include storage in working memory or volatile memory, but the term does imply at least some persistent storage. The execution of the program instructions is specially adapted or configured to enable the processing circuitry to perform the wireless device-related operations disclosed in this disclosure. Furthermore, it should be understood that wireless device 1000 may include additional components.

[0538] The wireless device 1000 executes instructions contained in the memory 1020 via the processor 1010, thereby enabling the wireless device to perform any of the previously described embodiments related to the actions performed by the wireless device, some of which are set forth in the appended claims.

[0539] A computer program including instructions is also provided, which, when executed by the processor 1010 of the wireless device, causes the processor 1010 to perform a method according to any of the foregoing embodiments.

[0540] Figure 11A simplified block diagram depicting network node 1100 is shown, which performs any of the above-described process or method steps associated with the network node. Network node 1100 includes a processor 1110 or processing circuitry or processing module or processor device 1110; receiver circuitry or receiver module 1140; transmitter circuitry or transmitter module 1150; memory module 1120; and transceiver circuitry or transceiver module 1130, which may include transmitter circuitry 1150 and receiver circuitry 1140. Network node 1100 also includes an antenna system 1160, which includes antenna circuitry for transmitting and receiving signals to / from at least wireless devices. The antenna system may employ beamforming technology.

[0541] Network node 1100 can employ any wireless access technology that supports beamforming, including 4G or LTE, LTE-A, 5G, 5G Advanced, or combinations thereof. The network device, including a processor and memory, contains instructions executable by the processor, thereby enabling network node 1100 to operate or be configured to perform any of the embodiments described above in relation to network node 1100.

[0542] Processing module / circuit 1110 includes a processor, microprocessor, application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), etc., and may be referred to as a "processor". Processor 1110 controls the operation of network nodes and their components. Memory (circuit or module) 1120 includes random access memory (RAM), read-only memory (ROM), and / or other types of memory to store data and instructions usable by processor 1110. Generally, it should be understood that in one or more embodiments, the network node includes fixed or programmable circuitry configured to perform the operations of any of the embodiments disclosed herein.

[0543] In at least one such example, processor 1110 includes a microprocessor, microcontroller, DSP, ASIC, FPGA, or other processing circuitry configured to execute computer program instructions stored in a non-transient computer-readable medium located within or accessible to the processing circuitry. Here, "non-transient" does not necessarily mean permanent or immutable storage; it may include storage in working memory or volatile memory, but the term does imply at least some persistent storage. The execution of the program instructions is specially adapted or configured to enable the processing circuitry to perform the wireless device-related operations disclosed in this disclosure. Furthermore, it should be understood that wireless device 1100 may include additional components. Network node 1100 may also be considered a Transmitter and Receiver Point (TRP).

[0544] Network node 1100 executes instructions contained in memory 1120 via processor 1110, thereby enabling network node 1100 to perform any of the previously described embodiments related to the actions performed by the network node, some of which are set forth in the appended claims.

[0545] References

[0546] [1]3GPP TS 38.101-1 V17.3.0: "3GPP; TSG RAN; User Equipment (UE)radio transmission and reception; Part 1: Range 1 Standalone," Oct. 2021.

Claims

1. A user equipment (UE) for a wireless communication system, wherein the UE is configured to • Receive at least from network nodes such as gNB o Channel State Information (CSI) reporting configuration via higher layers such as Radio Resource Control (RRC) layers, where the CSI reporting configuration provides including At least one CSI reference signal (CSI-RS) resource per port is provided for the UE to perform measurements. o via PHY layer signaling such as Physical Downlink Control Channel (PDCCH) and / or higher layer signaling such as RRC or Media Access Control (MAC) layer signaling, for at least one time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters associated with at least one of the CSI-RS resources provided by the CSI report configuration. Configuration or instructions performed on a subset • Perform measurements on at least one CSI-RS resource provided by the CSI reporting configuration. • Calculation and network node configuration or indication of CSI-RS resources At least one associated Channel State Information (CSI) and / or DL ​​transmission rate and / or reliability parameter in each subset, and • Reports are transmitted to network nodes via the PHY layer or higher, the reports including information related to CSI-RS resources configured or indicated by the network nodes. At least one or more of the at least one associated computed parameters in a subset.

2. The UE according to claim 1, wherein, • The airspace resources associated with CSI-RS resources are the ports associated with CSI-RS resources, and / or • Frequency domain resources associated with CSI-RS resources are physical resource blocks associated with CSI-RS resources, and / or • The temporal resources associated with CSI-RS resources are the symbols associated with CSI-RS resources in time slots / subframes / frames.

3. The UE according to any one of the preceding claims, wherein the CSI reporting configuration provides at least one of the following: • One or more non-zero power (NZP) CSI-RS resources used for channel measurements. • One or more zero-power (ZP) CSI-RS resources for interference measurements. • One or more CSI Interference Management (CSI-IM) resources used for interference measurement. • One or more NZP CSI-RS resources for interference measurement.

4. The UE according to any one of the preceding claims, wherein the CSI reporting configuration provides at least time-domain, frequency-domain, and / or spatial-domain resources and / or their associated parameters associated with at least one of the CSI-RS resources. Configuration or indication of a subset.

5. The UE according to any one of the preceding claims, wherein the network node provides the UE with at least one of the following instructions or configurations via the PHY layer or higher: • Enables the UE to select CSI-RS reporting resources A given subset of a subset And one or more parameters, • Capable of calculating subsets The parameters of one or more related parameters of CSI and / or DL ​​transmission and / or DL ​​transmission rate and / or reliability. • Thresholds for relevant parameters of CSI, DL transmission rate and / or reliability.

6. The UE according to any one of the preceding claims, wherein, Network nodes provide the UE with configurations or indications of one or more parameters related to channel state information (CSI) and / or DL ​​transmission rate and / or reliability, associated with at least one subset of the CSI-RS resources, via the PHY layer or higher.

7. The UE according to any one of the preceding claims, wherein, Reporting to network nodes is performed via the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH).

8. The UE according to any one of the preceding claims, wherein, One or more parameters related to CSI and / or DL ​​transmission rate and / or reliability are associated with CSI-RS resources. The subsets are related, among which ;and The value is configured by the network node and / or equal to , and / or are fixed in the specification.

9. The UE according to any one of the preceding claims, wherein the UE is configured to measure, calculate, and / or report to the network node information associated with CSI-RS resources. At least one of the following parameters associated with one or more subsets: • Broadband or subband CQI value • Precoding matrix indicator or related information about the precoding matrix indicator Rank indicator • Layer indicator.

10. The UE according to any one of the preceding claims, wherein, The report includes information related to CSI-RS resources. At least one of the following parameters associated with each subset, wherein ,: • Performance / measurement metrics • A differential or relative performance / measurement metric calculated relative to the same metric associated with the CSI-RS resource. • A differential or relative performance / measurement metric calculated in association with one of the P subsets associated with the CSI-RS resource.

11. The UE according to any one of the preceding claims, wherein, The performance / measurement metrics and / or differential / relative performance / measurement metrics reported by the wireless device to the network node via the PHY layer or higher, relative to one or more subsets associated with CSI-RS resources, are at least one of the following: • Reference signal received power (RSRP) or differential RSRP, • Signal-to-interference plus-noise ratio (SINR) or differential SINR, • Index / indicator of modulation and coding scheme (MCS) or differential MCS index / indicator, • Channel Quality Indicator / Index (CQI) or Differential CQI • Values / differential values ​​(or indicators of values / differential values) of any other parameter related to throughput / spectral efficiency, data rate, or reliability. • Rank or difference rank value / indicator • BLER or differential BLER value / indicator.

12. The UE according to any one of the preceding claims, wherein, The UE is configured to report to the network node at least a first subset of indices / indicators / identifiers associated with CSI-RS resources, wherein at least one of the following conditions applies: • The value of at least one parameter associated with the first subset is greater than (or less than) a predetermined, pre-configured, or configured threshold. , • Associated with CSI-RS resources The value of at least one parameter associated with at least one other subset within a subset is greater than (or less than) the threshold. Or different pre-set, pre-configured, or configured thresholds ,in The number / size / dimension of time-domain, frequency-domain, and / or spatial-domain resources associated with the first subset is less than the number / size / dimension of at least one other subset, and / or The value of the parameter and the threshold The difference / deviation is higher (or lower) than the difference / deviation between the at least one other subset and its corresponding threshold, and / or The index / indicator / identifier of the first subset is higher than / lower than the index / indicator / identifier of the at least one other subset.

13. The UE according to any one of the preceding claims, wherein CSI-RS resources exist. A subset There are several groups, in which the UE should provide the network node with information about CSI-RS resources in the report. A subset of parameters associated with CSI and / or DL ​​transmission rate and / or reliability, wherein in Individuals are concentrated, when hour, • At least two subsets belong to two different groups, or Each subset belongs to a different group.

14. A user equipment (UE) for a wireless communication system, wherein the UE is configured to • At least CSI report configurations are received from network nodes via higher layers, wherein the CSI report configurations provide at least two or more CSI-RS resources for wireless devices to perform channel measurements, and each CSI-RS resource is configured with one or more ports. • Perform measurements on at least one or both of the CSI-RS resources. • Calculate one or more parameters related to the channel state information (CSI) and / or DL ​​transmission rate and / or reliability associated with at least one of the CSI-RS resources, and • Transmit a report to the network node via the PHY layer or higher, the report including at least one or more of the calculated parameters associated with at least one of the CSI-RS resources.

15. The UE according to claim 14, wherein, UE is configured with One CSI-RS resource is used for channel measurements.

16. The UE according to claim 14 or 15, wherein, The report provided by the UE may include at least the following: o Indexes / indicators / identifiers of CSI-RS resources, among which , o For each CSI-RS resource, one or more parameters related to the CSI and / or DL ​​transmission rate and / or reliability associated with the physical downlink channel.

17. The UE according to any one of claims 14 to 16, wherein, The UE is configured to report the index / indicator / identifier of at least the first CSI-RS resource to the network node, wherein at least one of the following conditions applies: The value of at least one parameter associated with the first CSI-RS resource is greater than (or less than) a threshold. , o and The value of at least one parameter associated with at least one other CSI-RS resource in the resource is greater than (or less than) a threshold. Or different pre-set, pre-configured, or configured thresholds ,in The number / size / dimension of time-domain, frequency-domain, and / or spatial-domain resources associated with the first CSI-RS resource is less than the number / size / dimension of the at least one other CSI-RS resource, and / or The difference / deviation of the value of the parameter associated with the first CSI-RS resource from the threshold is higher than (or lower than) the difference / deviation between the at least one other CSI-RS resource and its corresponding threshold, and / or The index / indicator / identifier of the first CSI-RS resource is higher than / lower than the index / indicator / identifier of the at least one other CSI-RS resource.

18. The UE according to any one of claims 14 to 16, wherein, CSI report configuration provided The CSI-RS resources for channel measurement exist A subset of CSI-RS resources, in which wireless devices should provide at least [amount] to network nodes in the report. The index / indicator / identifier of a resource, where, when hour The report provides at least one resource from each subset of resources, or • At least two resources provided in the report belong to two different subsets.

19. A user equipment (UE) for a wireless communication system, wherein the UE is configured to • Receive at least the CSI report configuration from network nodes via higher layers, wherein the CSI report configuration provides at least... One CSI-RS and / or SSB resource is provided for wireless devices to perform channel measurements. • Perform measurements on at least one of the resources, and • Reported via the PHY layer and / or higher The index / indicator / identifier of each RS, and the L1-RSRP and / or L1-SINR values ​​(or differential L1-RSRP and / or differential L1-SINR) associated with each resource, where And value Configured by the network.

20. The UE according to claim 19, wherein, The UE uses different spatial receive filters or is instructed with different transmission configurations to indicate the TCI status in order to receive and / or measure the reported data. At least two distinct RSs out of a total of RSs.

21. The UE according to claim 19 or 20, wherein the... CSI-RS resources A subset, wherein the wireless device shall transmit one or more indices / indicators / identifiers of CSI-RS resources to the network node in the report, and one or more parameters related to the RSRP or SINR measurement associated with said subset, wherein The report provides at least one resource from each subset, or • At least two resources provided in the report belong to two different subsets.

22. The UE according to claim 21, wherein, Based on one or more common attributes among subsets, Each CSI-RS resource group is Each subset is executed by the UE or network node, or by a fixed method in the specification.

23. The UE according to any one of claims 19 to 22, wherein, The UE is configured to report to the network node via the PHY layer and / or higher layers. An index / indicator / identifier for a CSI-RS or SSB resource, wherein the reported resource is one of the following: • In the configuration for measurement The resource with the best L1-RSRP / SINR among the resources, or • In the configuration for measurement The resource has the lowest L1-RSRP / SINR and is higher than the configured or predetermined / fixed threshold. The resources.

24. The UE according to any one of claims 19 to 23, wherein the UE is configured to report to the network node via the PHY layer and / or higher layers. An index / indicator / identifier for a CSI-RS or SSB resource, wherein the reported resource can be one of the following: • In the configuration for measurement The resource with the highest L1-RSRP / SINR One resource and having the lowest L1-RSRP / SINR One resource, of which ,or • In the configuration for measurement The resource with the highest L1-RSRP / SINR The resource has the lowest L1-RSRP / SINR and is above the configured or predetermined / fixed threshold. of One resource, of which .

25. A user equipment (UE) for a wireless communication system, wherein the UE is configured by a network to transmit... One UL RS, such as the detection reference signal SRS, is used for beam management, where • The beam direction and / or spatial relationship / direction of the UL RS can be selected by the UE, for example, based on measurements from the DL RS or transmissions from the UL RS (e.g., the TCI status or spatial relationship of other UL RSs (which can be obtained from the UE detection process, such as U1)) or a combination of both. · By network configuration or instruction.

26. The UE according to claim 25, wherein • Network scheduling of SRS beam repetition to scan its Rx beam, and / or • The receiving beam corresponds to different groups of antenna elements and / or spatial directions.

27. A network node for a wireless communication system, the wireless communication system including one or more user equipment (UEs), wherein the network node is configured to... Transmit to UE o Channel State Information (CSI) reporting configuration via higher layers such as Radio Resource Control (RRC) layers, where the CSI reporting configuration provides including At least one CSI reference signal (CSI-RS) resource per port is provided for the UE to perform measurements. o via PHY layer signaling such as Physical Downlink Control Channel (PDCCH) and / or higher layer signaling such as RRC or Media Access Control (MAC) layer signaling, for at least one time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters associated with at least one of the CSI-RS resources provided by the CSI report configuration. The configuration or instructions performed on each subset, and • Enable UE to o Perform measurements on at least one CSI-RS resource provided by the CSI reporting configuration. o Calculate and configure or indicate CSI-RS resources with network nodes At least one associated Channel State Information (CSI) and / or DL ​​transmission rate and / or reliability parameter in each subset, and • Reports are received from the UE via the PHY layer or higher, and the reports include information about CSI-RS resources configured or indicated by the network node. At least one or more of the calculated parameters associated with at least one subset.

28. A network node for a wireless communication system, the wireless communication system including one or more user equipment (UEs), wherein the network node is configured to... • At least the CSI report configuration is transmitted from the network node to the UE via a higher layer, wherein the CSI report configuration provides at least two or more CSI-RS resources for the radio device to perform channel measurements, wherein each CSI-RS resource is configured with one or more ports, and • Enable UE to o Perform measurements on at least one or two of the CSI-RS resources, and o Calculate one or more parameters related to the channel state information (CSI) and / or DL ​​transmission rate and / or reliability associated with at least one of the CSI-RS resources, and • Receive a report from the UE via the PHY layer or higher, the report including at least one or more of the calculated parameters associated with at least one of the CSI-RS resources.

29. A network node for a wireless communication system, the wireless communication system including one or more user equipment (UEs), wherein the network node is configured to... • At least the CSI report configuration is transmitted from the network node to the UE via a higher layer, wherein the CSI report configuration provides at least the following: One CSI-RS and / or SSB resource is provided for wireless devices to perform channel measurements, and • Enables the UE to perform measurements on at least one of the said resources, and • Received from UE via PHY layer and / or higher layers The report includes the index / indicator / identifier of each RS, and the L1-RSRP and / or L1-SINR values ​​(or differential L1-RSRP and / or differential L1-SINR) associated with each resource, where... And value Configured by the network.

30. A network node for a wireless communication system, the wireless communication system including one or more user equipment (UEs), wherein the network node is used to configure the UEs to transmit. One UL RS, such as the detection reference signal SRS, is used for beam management, where • The beam direction and / or spatial relationship / direction of the UL RS can be selected by the UE, for example, based on measurements from the DL RS or transmissions from the UL RS (e.g., the TCI status or spatial relationship of other UL RSs (which can be obtained from the UE detection process, such as U1)) or a combination of both. · Configured or indicated by network nodes.

31. A system comprising a BS according to any one of claims 27-30 and a UE according to any one of claims 1-26.

32. A method for operating a user equipment (UE) in a wireless communication system, the method comprising: • Receive at least from network nodes such as gNB o Channel State Information (CS) report configuration via higher layers such as Radio Resource Control (RRC) layers, where the CSI report configuration provides including At least one CSI reference signal (CSI-RS) resource per port is provided for the UE to perform measurements. o via PHY layer signaling such as Physical Downlink Control Channel (PDCCH) and / or higher layer signaling such as RRC or Media Access Control (MAC) layer signaling, for at least one time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters associated with at least one of the CSI-RS resources provided by the CSI report configuration. Configuration or instructions performed on a subset • Perform measurements on at least one CSI-RS resource provided by the CSI reporting configuration. • Calculation and network node configuration or indication of CSI-RS resources At least one associated Channel State Information (CSI) and / or DL ​​transmission rate and / or reliability parameter in each subset, and • Reports are transmitted to network nodes via the PHY layer or higher, the reports including information related to CSI-RS resources configured or indicated by the network nodes. At least one subset of the calculated parameters associated with at least one subset of the subset.

33. A method for operating a user equipment (UE) in a wireless communication system, the method comprising: • The system receives Channel State Information (CSI) report configurations from network nodes via higher layers. These CSI report configurations provide at least two or more CSI-RS resources for wireless devices to perform channel measurements, with each CSI-RS resource configured with one or more ports. • Perform a measurement on at least one of the CSI-RS resources. • Calculate one or more parameters related to the channel state information (CSI) and / or DL ​​transmission rate and / or reliability associated with at least one of the CSI-RS resources, and • Transmit a report to the network node via the PHY layer or higher, the report including at least one or more of the calculated parameters associated with at least one of the CSI-RS resources.

34. A method for operating a user equipment (UE) in a wireless communication system, the method comprising: • Receive at least the CSI report configuration from network nodes via higher layers, wherein the CSI report configuration provides at least... One CSI-RS and / or SSB resource is provided for wireless devices to perform channel measurements. • Perform measurements on at least one of the resources, and • Reported via the PHY layer and / or higher The index / indicator / identifier of each RS, and the L1-RSRP and / or L1-SINR value (or differential L1-RSRP or differential L1-SINR) associated with each resource, wherein, And value Configured by the network.

35. A method for operating a user equipment (UE) in a wireless communication system, the method comprising receiving configuration from the network for transmission One UL RS, such as the detection reference signal SRS, is used for beam management, where • The beam direction and / or spatial relationship / direction of the UL RS can be selected by the UE, for example, based on measurements from the DL RS or transmissions from the UL RS (e.g., the TCI status or spatial relationship of other UL RSs (which can be obtained from the UE detection process (e.g., U1))) or a combination of both, and · By network configuration or instruction.

36. A method for operating a network node in a wireless communication system, the wireless communication system including one or more user equipment (UEs), the method comprising: Transmit to UE o Channel State Information (CSI) reporting configuration via higher layers such as Radio Resource Control (RRC) layers, where the CSI reporting configuration provides including At least one CSI reference signal (CSI-RS) resource per port is provided for the UE to perform measurements. o via PHY layer signaling such as Physical Downlink Control Channel (PDCCH) and / or higher layer signaling such as RRC or Media Access Control (MAC) layer signaling, for at least one time-domain, frequency-domain, and / or spatial-domain resource and / or its associated parameters associated with at least one of the CSI-RS resources provided by the CSI report configuration. The configuration or instructions performed on each subset, and • Enable UE to o Perform measurements on at least one CSI-RS resource provided by the CSI reporting configuration. o Calculate and configure or indicate CSI-RS resources with network nodes At least one associated Channel State Information (CSI) and / or DL ​​transmission rate and / or reliability parameter in each subset, and • Reports are received from the UE via the PHY layer or higher, and the reports include information about CSI-RS resources configured or indicated by the network node. At least one or more of the at least one associated computed parameters in each subset.

37. A method for operating a network node in a wireless communication system, the wireless communication system including one or more user equipment (UEs), the method comprising: • The Channel State Information (CSI) report configuration is transmitted from the network node to the UE via a higher layer. This CSI report configuration provides at least two or more CSI-RS resources for the radio device to perform channel measurements, with each CSI-RS resource configured with one or more ports. • Enable UE to o Perform a measurement on at least one of the CSI-RS resources, and o Calculate one or more parameters related to the channel state information (CSI) and / or DL ​​transmission rate and / or reliability associated with at least one of the CSI-RS resources, and • Receive a report from the UE via the PHY layer or higher, the report including at least one or more calculated parameters associated with at least one of the CSI-RS resources.

38. A method for operating a network node in a wireless communication system, the wireless communication system including one or more user equipment (UEs), the method comprising: • At least the CSI report configuration is transmitted from the network node to the UE via a higher layer, wherein the CSI report configuration provides at least the following: One CSI-RS and / or SSB resource is provided for wireless devices to perform channel measurements, and • Enables the UE to perform measurements on at least one of the said resources, and • Received from UE via PHY layer and / or higher layers The report includes the index / indicator / identifier of each RS, and the L1-RSRP and / or L1-SINR values ​​(or differential L1-RSRP and / or differential L1-SINR) associated with each resource, where... And value Configured by the network.

39. A method for operating a network node in a wireless communication system, the wireless communication system including one or more user equipment (UEs), the method comprising configuring the UE to transmit... One UL RS, such as the detection reference signal SRS, is used for beam management, where • The beam direction and / or spatial relationship / direction of the UL RS can be selected by the UE, for example, based on measurements from the DL RS or transmissions from the UL RS (e.g., the TCI status or spatial relationship of other UL RSs (which can be obtained from the UE detection process, such as U1)) or a combination of both. · Configured or indicated by network nodes.

40. A computer program for performing the steps of the method according to any one of claims 32 to 39.

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