User equipment, base station, and user equipment communication method

Abstract

To provide user equipment, a base station, and a method for time domain correlation information signaling.SOLUTION: User equipment UE receives first information to configure a channel state information-reference signal CSI-RS for tracking and second information to configure time domain correlation related information (902a). The UE transmits a channel state information CSI report including the time domain correlation related information. A first parameter trs-Info is included in the first information. A second parameter indicates one of a periodic CSI report, a semi-persistent CSI report, and an aperiodic CSI report. The time domain correlation related information is measured by the CSI-RS for tracking. The CSI report including the time domain correlation related information is transmitted based on the second parameter (904a).SELECTED DRAWING: Figure 9A

Description

[Technical Field]

[0001] TECHNICAL FIELD The present disclosure relates generally to communication systems, and more particularly to a user equipment, a base station, and a method for time-domain correlation information signaling. [Background technology]

[0002] Wireless communication devices are becoming more powerful to meet consumer demands and to improve portability and convenience. Consumers have become dependent on their wireless communication devices and expect reliable service, expanded coverage areas, and increased functionality. A wireless communication system may provide communication for multiple wireless communication devices, each of which may be serviced by a base station. A base station may be a device that communicates with the wireless communication devices. Summary of the Invention

[0003] Advances in wireless communication devices have led to demands for improved communication capacity, speed, flexibility, and / or efficiency. However, improving communication capacity, speed, flexibility, and / or efficiency can pose certain challenges.

[0004] For example, a wireless communication device may communicate with one or more devices using a communication structure. However, the flexibility and / or efficiency of the communication structure used may be limited. As described in this discussion, systems and methods that improve the flexibility and / or efficiency of communication may be beneficial. [Brief explanation of the drawings]

[0005] [Figure 1] FIG. 1 is a block diagram illustrating one implementation of one or more gNBs and one or more UEs in which systems and methods for signaling may be implemented. [Figure 2] FIG. 1 illustrates examples of multiple numerologies. [Figure 3]FIG. 2 is a diagram illustrating an example of a resource grid and resource blocks. [Figure 4] FIG. 2 illustrates an example of a resource area. [Figure 5] FIG. 1 is a diagram illustrating an example of beamforming and Quasi Co-Location (QCL) types. [Figure 6] FIG. 10 is a diagram illustrating an example of a transmission configuration indication (TCI) state. [Figure 7] FIG. 1 is a flow diagram illustrating an example method according to some of the techniques described herein. [Figure 8] FIG. 1 is a flow diagram illustrating an example method according to some of the techniques described herein. [Figure 9A] FIG. 1 is a flow diagram illustrating an example method according to some of the techniques described herein. [Figure 9B] FIG. 1 is a flow diagram illustrating an example method according to some of the techniques described herein. [Figure 10] FIG. 1 illustrates various components that may be utilized in a UE. [Figure 11] FIG. 1 illustrates various components that may be utilized in a gNB. [Figure 12] FIG. 1 is a block diagram illustrating one implementation of a UE in which one or more of the systems and / or methods described herein may be implemented. [Figure 13] FIG. 1 is a block diagram illustrating one implementation of a gNB in ​​which one or more of the systems and / or methods described herein may be implemented. [Figure 14] FIG. 1 is a block diagram illustrating one implementation of a gNB. [Figure 15] FIG. 1 is a block diagram illustrating one implementation of a UE. DETAILED DESCRIPTION OF THE INVENTION

[0006] A user equipment (UE) is described. The UE includes a receiving circuit configured to receive first information for configuring one or more tracking channel state information-reference signals (CSI-RSs) and second information for configuring information regarding time-domain correlation. The UE also includes a transmitting circuit configured to transmit a channel state information (CSI) report including information regarding the time-domain correlation. A first parameter, trs-Info, is included in the first information. A second parameter, reportQuantity, is not set to "none." The information regarding the time-domain correlation is measured by one or more tracking CSI-RSs.

[0007] Further, a base station is described. The base station includes a transmitting circuit configured to transmit first information for configuring one or more tracking CSI-RSs and second information for configuring information regarding time-domain correlation. The base station also includes a receiving circuit configured to receive a CSI report including information regarding time-domain correlation. A first parameter trs-Info is included in the first information. A second parameter reportQuantity is not set to "none." The information regarding time-domain correlation is measured by the one or more tracking CSI-RSs.

[0008] Further, a communication method for a UE is described. The method includes receiving first information for configuring one or more tracking CSI-RSs and second information for configuring information regarding time-domain correlation. The method also includes transmitting a CSI report including the information regarding the time-domain correlation. A first parameter, trs-Info, is included in the first information. A second parameter, reportQuantity, is not set to "none." The information regarding the time-domain correlation is measured by the one or more tracking CSI-RSs.

[0009] Furthermore, a communication method for a base station device is described. The method includes transmitting first information for configuring one or more tracking CSI-RSs and second information for configuring information regarding time-domain correlation. The method also includes receiving a CSI report including information regarding time-domain correlation. A first parameter trs-Info is included in the first information. A second parameter reportQuantity is not set to "none." The information regarding time-domain correlation is measured by the one or more tracking CSI-RSs.

[0010] Another UE is described. The UE includes a receiving circuit configured to receive first information for configuring one or more tracking CSI-RSs and second information for configuring information regarding time-domain correlation. The UE also includes a transmitting circuit configured to transmit a CSI report including the information regarding time-domain correlation. A first parameter, trs-Info, is included in the first information. A second parameter indicates one of periodic CSI reporting, semi-persistent CSI reporting, and aperiodic CSI reporting. The information regarding time-domain correlation is measured by the one or more tracking CSI-RSs. The CSI report including the information regarding time-domain correlation is transmitted based on the second parameter.

[0011] Another base station is described. The base station includes a transmitting circuit configured to transmit first information for configuring one or more tracking CSI-RSs and second information for configuring information regarding time-domain correlation. The base station also includes a receiving circuit configured to receive a CSI report including information regarding time-domain correlation. A first parameter trs-Info is included in the first information. A second parameter indicates one of periodic CSI reporting, semi-persistent CSI reporting, and aperiodic CSI reporting. The information regarding time-domain correlation is measured by the one or more tracking CSI-RSs. The CSI report including the information regarding time-domain correlation is received based on the second parameter.

[0012] Another communication method for a UE is described. The method includes receiving first information for configuring one or more tracking CSI-RSs and second information for configuring information regarding time-domain correlation. The method also includes transmitting a CSI report including the information regarding the time-domain correlation. A first parameter, trs-Info, is included in the first information. A second parameter indicates one of periodic CSI reporting, semi-persistent CSI reporting, and aperiodic CSI reporting. The information regarding the time-domain correlation is measured by the one or more tracking CSI-RSs. The CSI report including the information regarding the time-domain correlation is transmitted based on the second parameter.

[0013] Furthermore, another communication method for a base station device is described. The method includes transmitting first information for configuring one or more tracking CSI-RSs and second information for configuring information regarding time-domain correlation. The method also includes receiving a CSI report including information regarding the time-domain correlation. A first parameter trs-Info is included in the first information. A second parameter indicates one of periodic CSI reporting, semi-persistent CSI reporting, and aperiodic CSI reporting. The information regarding the time-domain correlation is measured by the one or more tracking CSI-RSs. The CSI report including the information regarding the time-domain correlation is received based on the second parameter.

[0014] The 3rd Generation Partnership Project, also known as "3GPP," is a collaborative agreement aimed at defining globally applicable technical specifications and technical reports for third- and fourth-generation wireless communication systems. 3GPP may define specifications for the next generation of mobile networks, systems, and equipment.

[0015] 3GPP Long Term Evolution (LTE) is the name given to a project to improve the standards for mobile phones or devices for the Universal Mobile Telecommunications System (UMTS) to address future requirements. In one aspect, UMTS has been modified to provide support and specifications for Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN).

[0016] At least some aspects of the systems and methods disclosed herein may be described in the context of 3GPP LTE, LTE-Advanced (LTE-A), LTE-Advanced Pro, and other standards (e.g., 3GPP Releases 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, and / or 18). However, the scope of the present disclosure should not be limited in this respect. At least some aspects of the systems and methods disclosed herein may be utilized in other types of wireless communication systems.

[0017] A wireless communication device may be an electronic device used to communicate voice and / or data to a base station, which in turn may communicate with a network of devices (e.g., a public switched telephone network (PSTN), the Internet, etc.). As described herein, systems and methods may alternatively refer to a wireless communication device as a mobile station, a UE, an access terminal, a subscriber station, a mobile terminal, a remote station, a user terminal, a terminal, a subscriber unit, a mobile device, etc. Examples of wireless communication devices include cellular phones, smartphones, personal digital assistants (PDAs), laptop computers, netbooks, e-book readers, wireless modems, etc. In 3GPP specifications, a wireless communication device is generally referred to as a UE. However, because the scope of this disclosure should not be limited to 3GPP standards, the terms “UE” and “wireless communication device” may be used interchangeably herein to refer to the more general term “wireless communication device.” A UE may also be more generally referred to as a terminal device.

[0018] In 3GPP specifications, a base station is typically referred to as a Node B, evolved Node B (eNB), home enhanced or evolved Node B (HeNB), g Node B (gNB), or other similar terminology. Because the scope of the present disclosure should not be limited to 3GPP standards, the terms “base station,” “Node B,” “eNB,” “gNB,” and “HeNB” may be used interchangeably herein to refer to the more general term “base station.” Furthermore, the term “base station” may be used to refer to an access point. An access point may be an electronic device that provides wireless communication devices with access to a network (e.g., a local area network (LAN), the Internet, etc.). The term “communication device” may be used to refer to both a wireless communication device and / or a base station. A gNB may be more generally referred to as a base station device.

[0019] It should be noted that, as used herein, a "cell" may be any communication channel defined by a standardization or regulatory body for use for International Mobile Telecommunications-Advanced (IMT-Advanced) or IMT-2020, all or a portion of which may be adopted by 3GPP as a licensed or unlicensed band (e.g., frequency bandwidth) for use for communications between an eNB or gNB and a UE. It should also be noted that, in the general description of E-UTRA and E-UTRAN, a "cell" as used herein may be defined as a "combination of downlink and optionally uplink resources." The association between the carrier frequency of the downlink resources and the carrier frequency of the uplink resources may be indicated in system information transmitted on the downlink resources.

[0020] Fifth-generation communication systems, referred to as New Radio technologies (NR) by 3GPP, envision the use of time / frequency / space resources to enable services such as enhanced Mobile Broadband (eMBB) transmission, Ultra Reliable and Low Latency Communication (URLLC) transmission, and massive Machine Type Communication (mMTC) transmission. In NR, transmission of different services may be designated (e.g., configured) for one or more bandwidth parts (BWPs) within a serving cell and / or for one or more serving cells. User equipment (UE) may receive downlink signals and / or transmit uplink signals within the BWPs of one or more serving cells.

[0021] In order for a service to efficiently use time, frequency, and / or space resources, it would be useful to be able to efficiently control downlink and / or uplink transmissions. Therefore, procedures for efficiently controlling downlink and / or uplink transmissions should be designed. Therefore, detailed design of procedures for downlink and / or uplink transmissions may be beneficial.

[0022] In some examples, URLLC UCI may have higher reliability and lower latency than eMBB. Some examples of the techniques described herein may achieve lower latency in minislot repetitions by using the earliest DMRS that meets the timing indicated or greater in the PUSCH repetitions.

[0023] Various examples of the systems and methods disclosed herein are now described with reference to the drawings. Like reference numbers may indicate functionally similar elements. The systems and methods as generally described herein and illustrated in the drawings could be arranged and designed in a wide variety of different implementations. Thus, the following more detailed description of several implementations illustrated in the drawings is not intended to limit the scope of the disclosure, in accordance with the claims, but is merely representative of the systems and methods.

[0024] 1 is a block diagram illustrating one implementation of one or more gNBs 160 and one or more UEs 102 in which systems and methods for signaling may be implemented. The one or more UEs 102 communicate with the one or more gNBs 160 using one or more physical antennas 122a-n. For example, the UE 102 transmits electromagnetic signals to the gNB 160 and receives electromagnetic signals from the gNB 160 using one or more physical antennas 122a-n. The gNB 160 communicates with the UE 102 using one or more physical antennas 180a-n. In some implementations, the terms “base station,” “eNB,” and / or “gNB” may refer to and / or be replaced by a “Transmission / Reception Point” (TRP). For example, the gNB 160 described in connection with FIG. 1 may be a TRP in some implementations.

[0025] The UE 102 and the gNB 160 may use one or more channels and / or one or more signals 119, 121 to communicate with each other. For example, the UE 102 may transmit information or data to the gNB 160 using one or more uplink channels 121. Examples of uplink channels 121 include a physical shared channel (e.g., a physical uplink shared channel (PUSCH)) and / or a physical control channel (e.g., a physical uplink control channel (PUCCH)). One or more gNBs 160 may also transmit information or data to one or more UEs 102 using, for example, one or more downlink channels 119. Examples of downlink channels 119 include a physical shared channel (e.g., a physical downlink shared channel (PDSCH)) and / or a physical control channel (a physical downlink control channel (PDCCH)). Other types of channels and / or signals may also be used.

[0026] Each of the one or more UEs 102 may include one or more transceivers 118, one or more demodulators 114, one or more decoders 108, one or more encoders 150, one or more modulators 154, a data buffer 104, and a UE operations module 124. For example, one or more receive paths and / or transmit paths may be implemented within the UE 102. For convenience, only a single transceiver 118, decoder 108, demodulator 114, encoder 150, and modulator 154 is shown within the UE 102, although multiple parallel elements (e.g., transceivers 118, decoders 108, demodulators 114, encoders 150, and modulators 154) may also be implemented.

[0027] The transceiver 118 may include one or more receivers 120 and one or more transmitters 158. The one or more receivers 120 may receive signals from the gNB 160 using one or more antennas 122a-n. For example, the receiver 120 may receive and then downconvert signals to generate one or more received signals 116. The one or more received signals 116 may be provided to the demodulator 114. The one or more transmitters 158 may transmit signals to the gNB 160 using one or more physical antennas 122a-n. For example, the one or more transmitters 158 may upconvert and transmit one or more modulated signals 156.

[0028] The demodulator 114 may demodulate one or more received signals 116 to generate one or more demodulated signals 112. The one or more demodulated signals 112 may be provided to the decoder 108. The UE 102 may decode signals using the decoder 108. The decoder 108 may generate multiple decoded signals 110, which may include a UE decoded signal 106 (also referred to as a first UE decoded signal 106). For example, the first UE decoded signal 106 may include received payload data, which may be stored in the data buffer 104. Another signal included in the decoded signal 110 (also referred to as a second UE decoded signal 110) may include overhead data and / or control data. For example, the second UE decoded signal 110 may provide data that the UE operation module 124 may use to perform one or more operations.

[0029] Generally, the UE operation module 124 may enable the UE 102 to communicate with one or more gNBs 160. The UE operation module 124 may include one or more UE scheduling modules 126.

[0030] The UE scheduling module 126 may perform (e.g., schedule) downlink reception and uplink transmission, including reception of data, downlink control information, and / or downlink reference signals, and uplink transmission, including transmission of data, uplink control information, and / or uplink reference signals.

[0031] In carrier aggregation (CA), the gNB 160 and the UE 102 may communicate with each other using one or more serving cells. Here, the one or more serving cells may include one primary cell and one or more secondary cells. For example, the gNB 160 may use an RRC message to transmit information used to configure one or more secondary cells to form a set of serving cells together with the primary cell. That is, the set of serving cells may include one primary cell and one or more secondary cells. Here, the primary cell may always be activated. The gNB 160 may also activate one or more secondary cells within the configured secondary cells. Here, in the downlink, the carrier corresponding to the primary cell may be a downlink primary component carrier (i.e., DL PCC), and the carrier corresponding to the secondary cell may be a downlink secondary component carrier (i.e., DL SCC). Also, in the uplink, the carrier corresponding to the primary cell may be an uplink primary component carrier (i.e., UL PCC), and the carrier corresponding to the secondary cell may be an uplink secondary component carrier (i.e., UL SCC).

[0032] In a wireless communication system, physical channels (uplink physical channels and / or downlink physical channels) may be defined that may be used to transmit information delivered from higher layers.

[0033] In some examples, a Physical Random Access Channel (PRACH) may be defined in the uplink. In some approaches, the PRACH (e.g., random access procedure) may be used for initial access connection establishment procedures, handover procedures, connection re-establishment, timing adjustment (e.g., for UL synchronization, synchronization for uplink transmissions), and / or requesting uplink shared channel (UL-SCH) resources (e.g., uplink physical shared channel (PSCH) (e.g., PUSCH) resources).

[0034] In some examples, a physical uplink control channel (PUCCH) may be defined. The PUCCH may be used to transmit uplink control information (UCI). The UCI may include a hybrid automatic repeat request-acknowledgement (HARQ-ACK), channel state information (CSI), and / or a scheduling request (SR). The HARQ-ACK is used to indicate an acknowledgement (ACK) or a negative acknowledgement (NACK) for downlink data (e.g., a transport block, a medium access control protocol data unit (MAC PDU), and / or a downlink shared channel (DL-SCH)). The CSI is used to indicate the status of a downlink channel (e.g., a downlink signal). The SR is used to request resources for uplink data (e.g., a transport block, a MAC PDU, and / or a downlink shared channel (UL-SCH)).

[0035] Here, the DL-SCH and / or the UL-SCH may be transport channels used in the MAC layer. A transport block (TB) and / or a MAC PDU may be defined as a unit of a transport channel used in the MAC layer. A transport block may be defined as a unit of data delivered from the MAC layer to the physical layer. The MAC layer may deliver the transport block to the physical layer (e.g., the MAC layer delivers data to the physical layer as a transport block). In the physical layer, the transport block may be mapped to one or more codewords.

[0036] In the downlink, a physical downlink control channel (PDCCH) may be defined. The PDCCH may be used to transmit downlink control information (DCI). Here, two or more DCI formats may be defined for DCI transmission on the PDCCH. That is, fields may be defined within the DCI format, and these fields are mapped to information bits (e.g., DCI bits).

[0037] Additionally or alternatively, a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH) may be defined. For example, if a PDSCH (e.g., a PDSCH resource) is scheduled by using a downlink DCI format, the UE 102 may receive downlink data on the scheduled PDSCH (e.g., a PDSCH resource). Additionally or alternatively, if a PUSCH (e.g., a PUSCH resource) is scheduled by using an uplink DCI format, the UE 102 transmits uplink data on the scheduled PUSCH (e.g., a PUSCH resource). For example, the PDSCH may be used to transmit downlink data (e.g., a DL-SCH, a downlink transport block). Additionally or alternatively, the PUSCH may be used to transmit uplink data (e.g., a UL-SCH, an uplink transport block).

[0038] Furthermore, the PDSCH and / or PUSCH may be used to transmit information for higher layers (e.g., radio resource control (RRC) layer and / or MAC layer). For example, the PDSCH (e.g., from the gNB 160 to the UE 102) and / or the PUSCH (e.g., from the UE 102 to the gNB 160) may be used to transmit RRC messages (RRC signals). Additionally or alternatively, the PDSCH (e.g., from the gNB 160 to the UE 102) and / or the PUSCH (e.g., from the UE 102 to the gNB 160) may be used to transmit MAC control elements (MAC CEs). Here, the RRC messages and / or the MAC CEs are also referred to as higher layer signals.

[0039] In some approaches, a physical broadcast channel (PBCH) may be defined. For example, the PBCH may be used to broadcast a master information block (MIB). Here, the system information may be divided into the MIB and several system information blocks (SIBs). For example, the MIB may be used to carry minimal system information. Additionally or alternatively, the SIBs may be used to carry system information messages.

[0040] In some approaches, a synchronization signal (SS) may be defined in the downlink. The SS may be used to obtain time and / or frequency synchronization with a cell. Additionally or alternatively, the SS may be used to detect the physical layer cell ID of a cell. The SS may include a primary SS and a secondary SS.

[0041] An SS / PBCH block may be defined as a set of a primary SS, a secondary SS, and a PBCH. In the time domain, an SS / PBCH block may include four OFDM symbols numbered in ascending order from 0 to 3 within the SS / PBCH block, with the PSS, SSS, and PBCH, along with associated demodulation reference signals (DMRS), mapped to the symbols. One or more SS / PBCH blocks may be mapped within a certain time period (e.g., 5 ms).

[0042] Additionally, the SS / PBCH block can be used for beam measurements, radio resource management (RRM) measurements, and radio link control (RLM) measurements. Specifically, the secondary synchronization signal (SSS) can be used for measurements.

[0043] In uplink wireless communication, a UL RS may be used as an uplink physical signal. Additionally or alternatively, in downlink wireless communication, a DL RS may be used as a downlink physical signal. The uplink physical signal and / or the downlink physical signal may not be used to transmit information provided from a higher layer, but may be used by the physical layer.

[0044] Here, for ease of explanation, it may be assumed that the downlink physical channels and / or downlink physical signals described herein are included in the downlink signal (i.e., DL signal) in some implementations. Additionally or alternatively, for ease of explanation, it may be assumed that the uplink physical channels and / or uplink physical signals described herein are included in the uplink signal (i.e., UL signal) in some implementations.

[0045] Some techniques for tracking CSI-RS and time-domain correlation and / or Doppler information reporting are described as follows: The UE 102 may be configured with a tracking NZP CSI-RS. The UE 102 may receive information of one or more NZP CSI-RS resource sets (NZP-CSI-RS-ResourceSet) in an RRC message. Each NZP CSI-RS resource set may include information for configuring one or more NZP CSI-RS resources (NZP-CSI-RS-Resource).

[0046] The UE 102 may be configured with one or more CSI reporting configurations. For this purpose, the UE 102 may receive information including one or more CSI reporting configurations in an RRC message. Each CSI reporting configuration (CSI-ReportConfig) may include information on CSI-RS resources for performing channel measurements, information on CSI-RS resources for interference measurements, a parameter ReportQuantity, what type of CSI is reported by the corresponding CSI reporting configuration (e.g., Layer-1 Reference Signal Reception Power (L1-RSRP), Precoding Matrix Indicator (PMI), Channel Quality Indicator (CQI), Rank Indicator (RI), CSI-RS Resource Indicator (CRI), and / or Layer Indicator (LI)), and a parameter reportConfigType indicating one of aperiodic CSI reporting, semi-persistent CSI reporting, and / or periodic CSI reporting.

[0047] A UE 102 in RRC connected mode may be expected to receive higher layer, UE-specific configuration of an NZP-CSI-RS-ResourceSet configured using the higher layer parameter trs-Info. For an NZP-CSI-RS-ResourceSet configured using the higher layer parameter trs-Info, the UE 102 may assume that antenna ports with the same port index of the NZP CSI-RS resources configured in that NZP-CSI-RS-ResourceSet are the same.

[0048] For frequency range 1 (e.g., sub-6 GHz), the UE 102 may be configured with one or more NZP-CSI-RS resource sets, where the parameter NZP-CSI-RS-ResourceSet may include four periodic NZP CSI-RS resources in two consecutive slots, with two periodic NZP CSI-RS resources in each slot. If there are not two consecutive slots indicated as downlink slots by tdd-UL-DL-ConfigurationCommon or tdd-UL-DL-ConfigDedicated, the UE 102 may be configured with one or more NZP CSI-RS sets, where the parameter NZP-CSI-RS-ResourceSet may include two periodic NZP CSI-RS resources in one slot.

[0049] For frequency range 2, the UE 102 may be configured with one or more NZP CSI-RS sets, where an NZP-CSI-RS-ResourceSet may include two periodic NZP CSI-RS resources in one slot, or may be configured with an NZP-CSI-RS-ResourceSet having four periodic NZP CSI-RS resources in two consecutive slots, with two periodic NZP CSI-RS resources in each slot.

[0050] A UE 102 configured with an NZP-CSI-RS-ResourceSet configured using the higher layer parameter trs-Info may have its NZP CSI-RS resources configured as periodic, with the CSI-RS resources in the parameter NZP-CSI-RS-ResourceSet configured with the same periodicity, bandwidth, and subcarrier position.

[0051] A UE 102 configured with an NZP-CSI-RS-ResourceSet configured using the higher layer parameter trs-Info may have the NZP CSI-RS resources configured as periodic CSI-RS resources in one set and aperiodic CSI-RS resources in a second set, with the aperiodic CSI-RS and periodic CSI-RS resources having the same bandwidth (having the same RB position), and with the aperiodic CSI-RS set to qcl-Type "Type A" and "Type D" and periodic CSI-RS resources, if corresponding. For frequency range 2, the UE may determine if the scheduling offset between the last symbol of the PDCCH carrying triggering DCI and the first symbol of the aperiodic CSI-RS resources is greater than or equal to the NZP CSI-RS resources in the CSI-RS symbols.

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[0052] The UE 102 may not expect to be configured with a CSI-ReportConfig linked to a CSI-ResourceConfig containing an NZP-CSI-RS-ResourceSet configured with trs-Info and with the higher layer parameter timeRestrictionForChannelMeasurements set to "configured".

[0053] The UE 102 may not expect to be configured with an NZP-CSI-RS-ResourceSet configured with both trs-Info and repetition.

[0054] If the UE 102 is configured with a CSI-ReportConfig with the higher layer parameter reportQuantity set to "none" for an aperiodic NZP CSI-RS resource set configured with trs-Info, the UE 102 may receive the tracking NZP CSI-RS and perform time and frequency channel tracking.

[0055] Some example techniques for tracking CSI-RS and time-domain correlation and / or Doppler information reporting are provided as follows: The UE 102 may be configured with aperiodic CSI-RS for tracking in an NZP-CSI-RS resource set configured with trs-Info. The UE 102 may be configured with quasi-static CSI-RS for tracking in an NZP-CSI-RS resource set configured with trs-Info. The UE 102 may be configured with periodic CSI-RS for tracking in an NZP-CSI-RS resource set configured with trs-Info.

[0056] The UE 102 may be configured with the CSI-ReportConfig for the periodic NZP-CSI-RS resource set configured with the trs-Info.

[0057] If the UE 102 is not configured with CSI-ReportConfig for a periodic NZP-CSI-RS resource set configured with trs-Info, the UE 102 may receive the tracking NZP CSI-RS and perform time and frequency channel tracking.

[0058] The UE 102 may be configured with CSI-ReportConfig for a semi-persistent NZP CSI-RS resource set configured with trs-Info. If the semi-persistent NZP CSI-RS resource set is configured with trs-Info, the UE 102 may be configured with CSI-ReportConfig, and the parameter reportQuantity in CSI-ReportConfig is set to "TDCI".

[0059] When the UE 102 is configured using CSI-ReportConfig with the higher layer parameter reportQuantity set to a parameter other than "none" (e.g., TDCI: Time Domain Correlation Information), the UE 102 may receive the tracking CSI-RS, perform time and frequency channel tracking, and measure information about the time domain correlation. The UE 102 may transmit the time domain correlation information based on the measurement of the tracking CSI-RS. One or more of the following information may be defined as the TDCI: Information about time-domain correlation values ​​measured from multiple tracking CSI-RSs received at different time-domain transmission and reception occasions; - Information about a difference value of received power between tracking CSI-RS received at different time domain transmission and reception occasions; - Information about a difference value of a signal-to-interference-plus-noise power ratio (SINR) between tracking CSI-RSs received at different time-domain transmission and reception occasions; - Information about the phase rotation value between the tracking CSI-RS received at different time domain transmission / reception occasions.

[0060] In some examples, each CSI-RS resource may be configured by a higher layer parameter NZP-CSI-RS-Resource with one or more of the following restrictions: As defined by the higher layer parameter CSI-RS-resourceMapping, the time domain location of two CSI-RS resources in one slot or four CSI-RS resources in two consecutive slots (the same across two consecutive slots) may be given by one of the following: For frequency range 1 (sub-6GHz) and frequency range 2 (above 6GHz),

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[0061] Additionally or alternatively, the UE 102 may measure the time-domain correlation by using a tracking CSI-RS associated with the parameter NZP-CSI-RS-ResourceSet configured with the parameter trs-Info and associated with the parameter CSI-Report-Config configured with reportQuantity as TDCI.

[0062] Additionally or alternatively, UE 102 may measure the time-domain correlation by using a tracking CSI-RS associated with parameter NZP-CSI-RS-ResourceSet configured with parameter trs-Info and associated with parameter CSI-Report-Config configured with reportQuantity as "none" and TDCI.

[0063] Additionally or alternatively, the parameter reportQuantity set to "TDCI" may be set separately from other CSI components (e.g., PMI, CQI, RI, LI, and / or CRI). The parameter reportQuantity set to "TDCI" may be set together with other CSI components (e.g., PMI, CQI, RI, LI, and / or CRI). In this case, reportQuantity may be set to another parameter name (e.g., "TDCI-PMI-CQI-RI" if CQI, PMI, RI, and TDCI are reported).

[0064] Additionally or alternatively, the UE 102 may be configured with time-domain prediction from the tracking CSI-RS according to information provided by the RRC message, and may reflect time-domain correlation with the reported CSI, such as CQI, PMI, RI, LI, and / or CRI. In this case, the parameter reportQuantity in the parameter CSI-ReportConfig associated with the tracking CSI-RS configured by the parameter NZP-CSI-RS-ResourceSet configured by the parameter trs-Info may be set to "none." Additionally or alternatively, the parameter reportQuantity in the parameter CSI-ReportConfig associated with the tracking CSI-RS configured by the parameter NZP-CSI-RS-ResourceSet configured by the parameter trs-Info may be set to TDCI.

[0065] Additionally or alternatively, the UE 102 may transmit UE capability information to support information measurements related to time-domain correlation. UE capabilities may include the maximum number of simultaneous calculations with other CSI components (e.g., L1-RSRP, PMI, CQI, RI, LI, and / or CRI). UE capabilities may be defined for each component carrier, each cell, and / or each frequency band.

[0066] Additionally or alternatively, the UE capabilities may include processing times separate from measurements of L1-RSRP, PMI, CQI, RI, LI, and / or CRI.

[0067] Additionally or alternatively, DCI on the PDCCH may indicate reporting of the TDCI to the UE 102. The MAC CE may activate reporting of the TDCI. Additionally or alternatively, the TDCI may be transmitted on the PUSCH and / or the PUCCH.

[0068] If periodic CSI reporting including TDCI reporting is configured, PUCCH or PUSCH may be used. If semi-persistent CSI reporting including TDCI reporting is configured, PUCCH or PUSCH may be used. If aperiodic CSI reporting including TDCI reporting is configured, PUSCH or PUCCH may be used. Periodic, semi-persistent, and / or aperiodic CSI reporting may be configured by parameters in CSI-ReportConfig.

[0069] The UE operation module 124 may provide information 148 to one or more receivers 120. For example, the UE operation module 124 may notify the receivers 120 when to receive retransmissions.

[0070] The UE operations module 124 may provide information 138 to the demodulator 114. For example, the UE operations module 124 may inform the demodulator 114 of an expected modulation pattern for transmissions from the gNB 160.

[0071] The UE operation module 124 may provide information 136 to the decoder 108. For example, the UE operation module 124 may inform the decoder 108 of the expected encoding for transmissions from the gNB 160.

[0072] The UE operation module 124 may provide information 142 to the encoder 150. The information 142 may include data to be coded and / or instructions for coding. For example, the UE operation module 124 may instruct the encoder 150 to code the transmission data 146 and / or other information 142. The other information 142 may include PDSCH HARQ-ACK information.

[0073] The encoder 150 may encode the transmission data 146 and / or other information 142 provided by the UE operation module 124. For example, encoding the data 146 and / or other information 142 may involve error detection and / or correction coding, mapping the data to space, time and / or frequency resources for transmission, multiplexing, etc. The encoder 150 may provide the encoded data 152 to a modulator 154.

[0074] The UE operations module 124 may provide information 144 to the modulator 154. For example, the UE operations module 124 may inform the modulator 154 of the type of modulation (e.g., signal space mapping) to be used for transmission to the gNB 160. The modulator 154 may modulate the coded data 152 to provide one or more modulated signals 156 to one or more transmitters 158.

[0075] The UE operation module 124 may provide information 140 to one or more transmitters 158. The information 140 may include instructions for the one or more transmitters 158. For example, the UE operation module 124 may instruct the one or more transmitters 158 when to transmit signals to the gNB 160. For example, the one or more transmitters 158 may transmit in an UL subframe. The one or more transmitters 158 may upconvert and transmit the modulated signals 156 to the one or more gNBs 160.

[0076] Each of the one or more gNBs 160 may include one or more transceivers 176, one or more demodulators 172, one or more decoders 166, one or more encoders 109, one or more modulators 113, a data buffer 162, and a gNB operation module 182. For example, one or more receive and / or transmit paths may be implemented in the gNB 160. For convenience, only a single transceiver 176, decoder 166, demodulator 172, encoder 109, and modulator 113 is shown in the gNB 160, although multiple parallel elements (e.g., transceiver 176, decoder 166, demodulator 172, encoder 109, and modulator 113) may be implemented.

[0077] The transceiver 176 may include one or more receivers 178 and one or more transmitters 117. The one or more receivers 178 may receive signals from the UE 102 using one or more physical antennas 180a-n. For example, the receivers 178 may receive and then downconvert signals to generate one or more received signals 174. The one or more received signals 174 may be provided to the demodulator 172. The one or more transmitters 117 may transmit signals to the UE 102 using one or more physical antennas 180a-n. For example, the one or more transmitters 117 may upconvert and transmit one or more modulated signals 115.

[0078] The demodulator 172 may demodulate one or more received signals 174 to generate one or more demodulated signals 170. The one or more demodulated signals 170 may be provided to a decoder 166. The gNB 160 may decode the signals using the decoder 166. The decoder 166 may generate one or more decoded signals 164, 168. For example, the first gNB decoded signal 164 may include received payload data, which may be stored in the data buffer 162. The second gNB decoded signal 168 may include overhead data and / or control data. For example, the second gNB decoded signal 168 may provide data (e.g., PDSCH HARQ-ACK information) that the gNB operations module 182 may use to perform one or more operations.

[0079] Generally, the gNB operations module 182 may enable the gNB 160 to communicate with one or more UEs 102. The gNB operations module 182 may include one or more gNB scheduling modules 194. The gNB scheduling module 194 may schedule downlink and / or uplink transmissions as described herein.

[0080] The gNB operations module 182 may provide information 188 to the demodulator 172. For example, the gNB operations module 182 may inform the demodulator 172 of an expected modulation pattern for transmissions from the UE 102.

[0081] The gNB operations module 182 may provide information 186 to the decoder 166. For example, the gNB operations module 182 may inform the decoder 166 of an expected encoding for a transmission from the UE 102.

[0082] The gNB operations module 182 may provide information 101 to the encoder 109. The information 101 may include data to be encoded and / or instructions for encoding. For example, the gNB operations module 182 may instruct the encoder 109 to encode the information 101 including transmission data 105.

[0083] The encoder 109 may encode the transmission data 105 and / or other information included in the information 101 provided by the gNB operations module 182. For example, encoding the data 105 and / or other information included in the information 101 may involve error detection and / or correction coding, mapping the data to spatial, time and / or frequency resources for transmission, multiplexing, etc. The encoder 109 may provide the encoded data 111 to the modulator 113. The transmission data 105 may include network data to be relayed to the UE 102.

[0084] The gNB operations module 182 may provide information 103 to the modulator 113. The information 103 may include instructions for the modulator 113. For example, the gNB operations module 182 may inform the modulator 113 of the type of modulation (e.g., signal space mapping) to be used for transmission to the UE 102. The modulator 113 may modulate the coded data 111 to provide one or more modulated signals 115 to one or more transmitters 117.

[0085] The gNB operations module 182 may provide information 192 to one or more transmitters 117. The information 192 may include instructions for the one or more transmitters 117. For example, the gNB operations module 182 may instruct the one or more transmitters 117 when to transmit (or when not to transmit) signals to the UEs 102. The one or more transmitters 117 may upconvert and transmit the modulated signals 115 to the one or more UEs 102.

[0086] It should be noted that DL subframes may be transmitted from the gNB 160 to one or more UEs 102, and UL subframes may be transmitted from one or more UEs 102 to the gNB 160. Additionally, both the gNB 160 and one or more UEs 102 may transmit data in standard special subframes.

[0087] It should be noted that one or more of the elements or components included in the gNB 160 and the UE 102 may be implemented in hardware. For example, one or more of the elements or components may be implemented as a chip, a circuit, a hardware component, or the like. It should also be noted that one or more of the functions or methods described herein may be implemented in and / or implemented using hardware. For example, one or more of the methods described herein may be implemented in and / or realized using a chipset, an application-specific integrated circuit (ASIC), a large-scale integrated circuit (LSI), an integrated circuit, or the like.

[0088] FIG. 2 shows an example of multiple numerologies 201. As shown in FIG. 2, multiple numerologies 201 (e.g., multiple subcarrier spacings) can be supported. For example, μ (e.g., subcarrier spacing configuration) and cyclic prefix (e.g., μ and cyclic prefix of carrier bandwidth portion) can be configured by higher layer parameters (e.g., RRC messages) for the downlink and / or uplink. Here, 15 kHz can be the reference numerology 201. For example, the RE of the reference numerology 201 can be defined with a subcarrier spacing of 15 kHz in the frequency domain and with a 2048 Ts+CP length (e.g., 160 Ts or 144 Ts) in the time domain, where Ts represents a baseband sampling time unit defined as 1 / (15000*2048) seconds.

[0089] Additionally or alternatively, the number of OFDM symbols 203 per slot

number

[0090] 3 is a diagram illustrating an example of a resource grid 301 and resource blocks 391 (e.g., for the downlink and / or uplink). The resource grid 301 and resource blocks 391 illustrated in FIG. 3 may be utilized in some implementations of the systems and methods disclosed herein.

[0091] In FIG. 3, one subframe 369 is

number

[0092] Additionally or alternatively, in addition to CP-OFDM, a single-carrier frequency-division multiple access (SC-FDMA) access scheme, also known as discrete Fourier transform-spread OFDM (DFT-S-OFDM), may be used in the uplink. An uplink radio frame may include multiple pairs of uplink resource blocks 391. An uplink RB pair is a unit for allocating uplink radio resources defined by a predetermined bandwidth (RB bandwidth) and a time slot. An uplink RB pair may include two consecutive uplink RBs 391 in the time domain. An uplink RB may include 12 subcarriers in the frequency domain and seven (for normal CP) or six (for extended CP) OFDM / DFT-S-OFDM symbols in the time domain. The area defined by one subcarrier in the frequency domain and one OFDM / DFT-S-OFDM symbol in the time domain is called a resource element (RE) 389, which is uniquely identified within a slot by an index pair (k, l), where k and l are indices in the frequency domain and time domain, respectively.

[0093] Each element in the resource grid 301 (e.g., antenna port p) and subcarrier configuration μ is called a resource element 389 and is uniquely identified by an index pair (k, l), where k=0, ...

number

number

number

number

[0094] In NR, the following reference signals may be defined: NZP CSI-RS (Non-Zero Power Channel State Information Reference Signal) ZP CSI-RS (Zero Power Channel State Information Reference Signal) DMRS (Demodulation Reference Signal) SRS (Sounding Reference Signal)

[0095] The NZP CSI-RS may be used for channel tracking (e.g., synchronization), measurements to obtain CSI (CSI measurements including channel measurements and interference measurements), and / or measurements to obtain beamforming performance. The NZP CSI-RS may be transmitted in the downlink (from the gNB to the UE). The NZP CSI-RS may be transmitted aperiodically, semi-persistently, or periodically. Furthermore, the NZP CSI-RS may be used for radio resource management (RRM) measurements and radio link control (RLM) measurements.

[0096] The ZP CSI-RS is used for interference measurement and may be transmitted in the downlink (from the gNB to the UE). The ZP CSI-RS may be transmitted in an aperiodic, semi-persistent, or periodic manner.

[0097] DMRS can be used for demodulation of the downlink (gNB to UE), uplink (UE to gNB), and sidelink (UE to UE).

[0098] The SRS may be used for channel sounding and beam management. The SRS may be transmitted in the uplink (UE to gNB).

[0099] In some approaches, DCI may be used. The following DCI formats may be defined: DCI Format 0_0 DCI Format 0_1 DCI Format 0_2 DCI Format 1_0 DCI Format 1_1 DCI Format 1_2 DCI Format 2_0 DCI Format 2_1 DCI Format 2_2 DCI Format 2_3 DCI Format 2_4 DCI Format 2_5 DCI Format 2_6 DCI Format 3_0 DCI Format 3_1

[0100] DCI format 1_0 may be used for scheduling PUSCH within one cell. DCI may be transmitted by DCI format 0_0 with a cyclic redundancy check (CRC) scrambled by a Cell Radio Network Temporary Identifier (C-RNTI), a Configured Scheduling RNTI (CS-RNTI), or a Modulation and Coding Scheme-Cell RNTI (MCS-C-RNTI).

[0101] DCI format 0_1 ​​may be used for scheduling one or more PUSCHs in a cell or for indicating Configured Grant Downlink Feedback Information (CG-DFI) to a UE. DCI may be transmitted by DCI format 0_1 ​​with a CRC scrambled by C-RNTI, CS-RNTI, Semi-Persistent Channel State Information (SP-CSI-RNTI), or MCS-C-RNTI. DCI format 0_2 may be used for CSI requests (e.g., aperiodic CSI reporting or semi-persistent CSI requests). DCI format 0_2 may be used for SRS requests (e.g., aperiodic SRS transmission).

[0102] DCI format 0_2 may be used for scheduling a PUSCH in one cell. DCI may be transmitted by DCI format 0_2 with a CRC scrambled by the C-RNTI, CS-RNTI, SP-CSI-RNTI, or MCS-C-RNTI. DCI format 0_2 may be used for scheduling a PUSCH with high priority and / or low latency (e.g., URLLC). DCI format 0_2 may be used for CSI requests (e.g., aperiodic CSI reporting or semi-persistent CSI requests). DCI format 0_2 may be used for SRS requests (e.g., aperiodic SRS transmissions).

[0103] Also, for example, the DCI included in DCI format 0_Y (Y=0, 1, 2, ...) may be a BWP indicator (e.g., of a PUSCH). Additionally or alternatively, the DCI included in DCI format 0_Y may be a frequency domain resource allocation (e.g., of a PUSCH). Additionally or alternatively, the DCI included in DCI format 0_Y may be a time domain resource allocation (e.g., of a PUSCH). Additionally or alternatively, the DCI included in DCI format 0_Y may be a modulation and coding scheme (e.g., of a PUSCH). Additionally or alternatively, the DCI included in DCI format 0_Y may be a new data indicator. Additionally or alternatively, the DCI included in DCI format 0_Y may be a TPC command for a scheduled PUSCH. Additionally or alternatively, the DCI included in DCI format 0_Y may be a CSI request used to request a CSI report. Additionally or alternatively, as described below, the DCI included in DCI format 0_Y may be information used to indicate an index of a configuration of a configuration grant. Additionally or alternatively, the DCI included in DCI format 0_Y may be a priority indication (e.g., of PUSCH transmission and / or PUSCH reception).

[0104] DCI format 1_0 may be used for scheduling PDSCH within one DL cell. DCI is transmitted by DCI format 1_0 with a CRC scrambled by a C-RNTI, a CS-RNTI, or an MCS-C-RNTI. DCI format 1_0 may be used for a random access procedure initiated by a PDCCH order. Additionally or alternatively, DCI may be transmitted by DCI format 1_0 with a CRC scrambled by a System Information RNTI (SI-RNTI), and DCI may be used for transmitting and / or receiving system information. Additionally or alternatively, DCI may be transmitted by DCI format 1_0 with a CRC scrambled by a Random Access RNTI (RA-RNTI) for a Random Access Response (RAAR) (e.g., Msg2) or msgB-RNTI for a two-step RACH. Additionally or alternatively, the DCI may be transmitted in DCI format 1_0 with a CRC scrambled by a temporary cell RNTI (TC-RNTI), and the DCI may be used for msg3 transmission by the UE 102.

[0105] DCI format 1_1 may be used for scheduling PDSCH within one cell. DCI may be transmitted by DCI format 1_1 with a CRC scrambled by C-RNTI, CS-RNTI, or MCS-C-RNTI. DCI format 1_1 may be used for SRS requests (e.g., aperiodic SRS transmission).

[0106] DCI format 1_2 may be used for scheduling PDSCH within one cell. DCI may be transmitted by DCI format 1_2 with a CRC scrambled by C-RNTI, CS-RNTI, SP-CSI-RNTI, or MCS-C-RNTI. DCI format 1_2 may be used for scheduling PDSCH with high priority and / or low latency (e.g., URLLC). DCI format 1_2 may be used for SRS requests (e.g., aperiodic SRS transmission).

[0107] Additionally, for example, the DCI included in DCI format 1_X may be a BWP indicator (e.g., of a PDSCH). Additionally or alternatively, the DCI included in DCI format 1_X may be a frequency domain resource allocation (e.g., of a PDSCH). Additionally or alternatively, the DCI included in DCI format 1_X may be a time domain resource allocation (e.g., of a PDSCH). Additionally or alternatively, the DCI included in DCI format 1_X may be a modulation and coding scheme (e.g., of a PDSCH). Additionally or alternatively, the DCI included in DCI format 1_X may be a new data indicator. Additionally or alternatively, the DCI included in DCI format 1_X may be a TPC command for a scheduled PUCCH. Additionally or alternatively, the DCI included in DCI format 1_X may be a CSI request used to request (e.g., trigger) transmission of CSI (e.g., a CSI report (e.g., an aperiodic CSI report)). Additionally or alternatively, the DCI included in DCI format 1_X may be a PUCCH resource indicator. Additionally or alternatively, the DCI included in DCI format 1_X may be a feedback timing indicator from a PDSCH to HARQ. Additionally or alternatively, the DCI included in DCI format 1_X may be a priority indication (e.g., of PDSCH transmission and / or PDSCH reception). Additionally or alternatively, the DCI included in DCI format 1_X may be a priority indication (e.g., of HARQ-ACK transmission of a PDSCH and / or of HARQ-ACK reception of a PDSCH).

[0108] DCI format 2_0 may be used to signal the slot format, the duration of the channel occupancy time (COT) during unlicensed band operation, the available resource block (RB) set, and search space group switching. DCI may be transmitted by DCI format 2_0 with a CRC scrambled by the slot format indicator RNTI (SFI-RNTI).

[0109] DCI format 2_1 may be used to signal physical resource blocks (PRBs) and orthogonal frequency division multiplexing (OFDM) symbols when a UE may assume that no transmission is intended for that UE. DCI is transmitted by DCI format 2_1 with a CRC scrambled by an Interrupted Transmission RNTI (INT-RNTI).

[0110] DCI format 2_2 may be used to transmit Transmission Power Control (TPC) commands for the PUCCH and PUSCH. The following information is transmitted by DCI format 2_2 with a CRC scrambled by the TPC-PUSCH-RNTI or the TPC-PUCCH-RNTI: If the CRC is scrambled by the TPC-PUSCH-RNTI, one or more indicated TPC commands may be applied to the TPC loop of the PUSCH. If the CRC is scrambled by the TPC-PUCCH-RNTI, one or more indicated TPC commands may be applied to the TPC loop of the PUCCH.

[0111] DCI format 2_3 may be used to transmit a group of TPC commands for SRS transmission by one or more UEs. SRS requests may also be transmitted along with the TPC commands. DCI may be transmitted by DCI format 2_3 with a CRC scrambled by the TPC-SRS-RNTI.

[0112] DCI format 2_4 may be used to indicate PRBs and OFDM symbols when a UE cancels the corresponding UL transmission. The DCI may be transmitted by DCI format 2_4 with a CRC scrambled by a Cancellation Indication RNTI (CI-RNTI).

[0113] DCI format 2_5 may be used to signal the availability of soft resources for Integrated Access and Backhaul (IAB) operations. The DCI may be transmitted by DCI format 2_5 with a CRC scrambled by the Availability Indication RNTI (AI-RNTI).

[0114] DCI format 2_6 may be used to signal power saving information outside the discontinuous reception (DRX) active period of one or more UEs. The DCI may be transmitted by DCI format 2_6 with a CRC scrambled by a power saving RNTI (PS-RNTI).

[0115] DCI format 3_0 can be used for scheduling the NR Physical Sidelink Control Channel (PSCCH) and the NR Physical Sidelink Shared Channel (PSSCH) within one cell. DCI can be transmitted by DCI format 3_0 with a CRC scrambled by the Sidelink RNTI (SL-RNTI) or Sidelink Configured Scheduling RNTI (SL-CS-RNTI). This can be used for Vehicle to Everything (V2X) operation of NR V2X UEs.

[0116] DCI format 3_1 may be used for scheduling LTE PSCCH and LTE PSSCH within one cell. The following information is transmitted by DCI format 3_1 with CRC scrambled by SL-L-CS-RNTI, which may be used for LTE V2X operation of LTE V2X UEs:

[0117] The UE 102 may monitor one or more DCI formats on a shared search space set (CSS) and / or a UE-specific search space set (USS). A set of PDCCH candidates for the UE to monitor may be defined in terms of a PDCCH search space set. The search space set may be a CSS set or a USS set. The UE 102 monitors PDCCH candidates in one or more of the following search space sets: The search space may be defined by a PDCCH configuration in the RRC layer.

[0118] The Type0-PDCCH CSS set can be configured by pdcch-ConfigSIB1 in MIB, or by searchSpaceSIB1 in PDCCH-ConfigCommon, or by searchSpaceZero in PDCCH-ConfigCommon for a DCI format with CRC scrambled by SI-RNTI on the primary cell of the MCG.

[0119] The Type0A-PDCCH CSS set may be configured by searchSpaceOtherSystemInformation in PDCCH-ConfigCommon for a DCI format with CRC scrambled by SI-RNTI on the primary cell of the MCG.

[0120] The Type1-PDCCH CSS set can be configured by ra-SearchSpace in PDCCH-ConfigCommon for a DCI format having a CRC scrambled by the RA-RNTI or TC-RNTI on the primary cell.

[0121] The Type2-PDCCH CSS set may be configured by pagingSearchSpace in PDCCH-ConfigCommon for a DCI format with a CRC scrambled by the above P-RNTI in the primary cell of the MCG.

[0122] The Type3-PDCCH CSS set can be configured by a SearchSpace in the PDCCH-Config with searchSpaceType=common for DCI formats with CRC scrambled by INT-RNTI, SFI-RNTI, TPC-PUSCH-RNTI, TPC-PUCCH-RNTI, TPC-SRS-RNTI, CI-RNTI, or PS-RNTI, and for only the primary cell, C-RNTI, MCS-C-RNTI, or CS-RNTI.

[0123] The USS set can be configured by a SearchSpace in the PDCCH-Config with searchSpaceType=ue-Specific for DCI formats with a CRC scrambled by C-RNTI, MCS-C-RNTI, SP-CSI-RNTI, CS-RNTI, SL-RNTI, SL-CS-RNTI, or SL-L-CS-RNTI.

[0124] The UE 102 may monitor a set of PDCCH candidates within one or more control resource sets (e.g., CORESET) on the active DL bandwidth portion (BWP) on each activated serving cell according to a corresponding search space set. The CORESET may be configured from the gNB 160 to the UE 102, and the CSS set and USS set may be defined within the configured CORESET. One or more CORESETs may be configured in the RRC layer.

[0125] FIG. 4 illustrates an example of a resource area (e.g., a downlink resource area). One or more sets 401 of PRBs 491 (e.g., a control resource set (e.g., CORESET)) may be configured for DL ​​control channel monitoring (e.g., PDCCH monitoring). For example, CORESET is a set 401 of PRBs 491 in the frequency domain and / or the time domain from which the UE 102 attempts to decode DCI (e.g., DCI format, PDCCH). The PRBs 491 may or may not be frequency-contiguous and / or time-contiguous. The UE 102 may be configured with one or more control resource sets (e.g., CORESET), and one DCI message may be mapped within one control resource set. In the frequency domain, the PRB 491 is the resource unit size of the DL control channel (which may or may not include the DM-RS).

[0126] FIG. 5 shows examples of beamforming and quasi-co-location (QCL) types. In NR, the gNB 560 and UE 502 may perform beamforming by having multiple antenna elements. Beamforming can be performed using directional antennas or by applying a phase shift to each antenna element (e.g., to achieve a high electric field strength in a specific spatial direction). In some examples, beamforming or beams can be referred to as "spatial domain transmit filters" or "spatial domain filters."

[0127] In the downlink, the gNB 560 may apply transmit beamforming to transmit DL channels and / or DL ​​signals, and the UE 502 may apply receive beamforming to receive DL channels and / or DL ​​signals.

[0128] In the uplink, the UE 560 may apply transmit beamforming to transmit an UL channel and / or an UL signal, and the gNB 560 may apply receive beamforming to receive an UL channel and / or an UL signal.

[0129] The beam correspondence may be defined according to the UE capabilities. In some examples, the beam correspondence may be defined according to the following: In the downlink, the UE 502 may determine the transmit beamforming for the UL channels and / or UL signals from the receive beamforming for the DL channels and / or DL ​​signals. In the uplink, the gNB 560 may determine the transmit beamforming for the DL channels and / or DL ​​signals from the receive beamforming for the UL channels and / or UL signals.

[0130] Beam management may be performed to adaptively switch, fine-tune, or manipulate beamforming. For beam management, the NZP-CSI-RS and SRS may be used to measure channel quality in the downlink and uplink, respectively. Specifically, in the downlink, the gNB 560 may transmit one or more NZP CSI-RSs. The UE 502 may measure the one or more NZP CSI-RSs. Furthermore, the UE 502 may change beamforming to receive each NZP CSI-RS. The UE 502 may identify which combination of transmit beamforming on the gNB side corresponds to the corresponding NZP CSI-RS and receive beamforming on the UE side. In the uplink, the UE 502 may transmit one or more SRSs. The gNB 502 measures the one or more SRSs. Furthermore, the gNB 560 may change receive beamforming to receive each SRS. The gNB 560 can identify which combination of transmit beamforming on the UE side corresponds to the corresponding SRS and the receive beamforming on the gNB side.

[0131] To maintain transmit beams and receive links for communications between the gNB 560 and the UE 502, a quasi-co-located (QCL) assumption may be defined. Two antenna ports are said to be quasi-co-located if the large-scale characteristics of the channel through which symbols on one antenna port are conveyed can be inferred from the channel through which symbols on the other antenna port are conveyed. The large-scale characteristics include one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters. The following QCL types may be defined: QCL Type A ("QCL-TypeA"): {Doppler shift, Doppler spread, mean delay, delay spread} QCL Type B ("QCL-TypeB"): {Doppler shift, Doppler spread} QCL Type C ("QCL-TypeC"): {Doppler shift, average delay} QCL Type D ("QCL-TypeD"): {Spatial Rx parameters}

[0132] QCL Type D is related to beam management. For example, two NZP CSI-RS resources are configured for UE 502, and NZP CSI-RS resource #1 and NZP CSI-RS resource #2 are used for beam #1 and beam #2, respectively. On the UE side, Rx beam #1 is used to receive NZP CSI-RS #1, and Rx beam #2 is used to receive NZP CSI-RS #2 for beam management. Here, NZP CSI-RS resource #1 and NZP CSI-RS resource #2 imply Tx beam #1 and Tx beam #2, respectively. QCL Type D assumptions can be used to receive PDCCH, PDSCH, and DL signals. When UE 502 receives PDCCH under the QCL Type D assumption of NZP CSI-RS #1, UE 502 can use Rx beam #2 for PDCCH reception.

[0133] To this end, the gNB 560 may configure a transmission configuration indication (TCI) state for the UE 502. The TCI state may include: One or more reference resource indicators QCL type for each of one or more reference resource indexes

[0134] For example, if the TCI state includes QCL type D and NZP CSI-RS#1 and is indicated to UE 502, UE 502 may apply Rx beam#1 to receive PDCCH, PDSCH, and / or DL ​​signals. In other words, UE 502 can determine the receive beam by using the TCI state for receiving PDCCH, PDSCH, and / or DL ​​signals.

[0135] FIG. 6 shows an example of a transmission configuration indication (TCI) state. Seven TCI states may be configured, and one of the configured TCI states may be used to receive PDCCH, PDSCH, and / or DL ​​signals. For example, if gNB 560 indicates TCI state #1, UE 502 may assume that PDCCH, PDSCH, and / or DL ​​signals are quasi-colocated with NZP CSI-RS corresponding to NZP CSI-RS resource #1. UE 502 may determine to use a receive beam when UE 502 receives NZP CSI-RS corresponding to NZP CSI-RS resource #1.

[0136] Next, a method for indicating one TCI state from the gNB 560 to the UE 502 will be described. N TCI states may be configured within an RRC message by the RRC message. The gNB 560 may indicate one of the configured TCI states by a DCI (e.g., DCI format 1_1 or DCI format 1_2). Alternatively or additionally, the gNB 560 may indicate one of the configured TCI states by a MAC CE. Alternatively or additionally, the MAC CE may select two or more of the configured TCI states, and the DCI may indicate one of the two or more TCI states activated by the MAC CE.

[0137] 7 is a flow diagram illustrating an example of a method 700 in accordance with some of the techniques described herein. In some examples, the method 700 may be performed by the UE 102 described in connection with FIG.

[0138] At 702, the UE may receive first information for configuring one or more tracking CSI-RSs and second information for configuring information related to time-domain correlation. In some examples, this may be done as described in connection with FIG.

[0139] At 704, the UE may transmit a CSI report including information about the time-domain correlation. The first parameter trs-Info may be included in the first information. The second parameter reportQuantity may be set to "none." The information about the time-domain correlation may be measured by one or more tracking CSI-RSs. In some examples, this may be done as described in connection with FIG. 1.

[0140] 8 is a flow diagram illustrating an example of a method 800 according to some of the techniques described herein. In some examples, the method 800 may be performed by the gNB 160 described in connection with FIG.

[0141] At 802, the gNB may transmit first information for configuring one or more tracking CSI-RSs and second information for configuring information regarding time-domain correlation. In some examples, this may be done as described in connection with FIG. 1.

[0142] At 804, the gNB may receive a CSI report including information about time-domain correlation. A first parameter trs-Info may be included in the first information. A second parameter reportQuantity may be set to "none." The information about time-domain correlation may be measured by one or more tracking CSI-RSs. In some examples, this may be done as described in connection with FIG. 1.

[0143] 9A is a flow diagram illustrating an example of a method 900a according to some of the techniques described herein. In some examples, the method 900a may be performed by the UE 102 described in connection with FIG.

[0144] At 902a, the UE may receive first information for configuring one or more tracking CSI-RSs and second information for configuring information related to time-domain correlation. In some examples, this may be done as described in connection with FIG.

[0145] At 904a, the UE may transmit a CSI report including information about the time-domain correlation. A first parameter trs-Info may be included in the first information. The second parameter may indicate one of periodic CSI reporting, semi-persistent CSI reporting, and aperiodic CSI reporting. The information about the time-domain correlation may be measured by one or more tracking CSI-RSs. The CSI report including the information about the time-domain correlation may be transmitted based on the second parameter. In some examples, this may be done as described in connection with FIG. 1.

[0146] 9B is a flow diagram illustrating an example of a method 900b according to some of the techniques described herein. In some examples, the method 900b may be performed by the gNB 160 described in connection with FIG.

[0147] At 902b, the gNB may transmit first information for configuring one or more tracking CSI-RSs and second information for configuring information regarding time-domain correlation. In some examples, this may be done as described in connection with FIG. 1.

[0148] At 904b, the gNB may receive a CSI report including information about time-domain correlation. A first parameter trs-Info may be included in the first information. The second parameter may indicate one of periodic CSI reporting, semi-persistent CSI reporting, and aperiodic CSI reporting. The information about time-domain correlation may be measured by one or more tracking CSI-RSs. The CSI report including the information about time-domain correlation may be received based on the second parameter. In some examples, this may be done as described in connection with FIG. 1.

[0149] FIG. 10 illustrates various components that may be utilized in a UE 1002. The UE 1002 described in connection with FIG. 10 may be implemented in accordance with the UE 102 described in connection with FIG. 1. The UE 1002 includes a processor 1003 that controls operation of the UE 1002. The processor 1003 may also be referred to as a central processing unit (CPU). A memory 1005, which may include read-only memory (ROM), random access memory (RAM), a combination of the two, or any type of device capable of storing information, provides instructions 1007a and data 1009a to the processor 1003. A portion of the memory 1005 may also include non-volatile random access memory (NVRAM). Instructions 1007b and data 1009b may also reside within the processor 1003. The instructions 1007b and / or data 1009b loaded into the processor 1003 may include instructions 1007a and / or data 1009b from memory 1005 loaded for execution or processing by the processor 1003. The instructions 1007b may be executed by the processor 1003 to perform one or more of the methods described above.

[0150] The UE 1002 may also include a housing that houses one or more transmitters 1058 and one or more receivers 1020 to enable transmission and reception of data. The transmitters 1058 and receivers 1020 may be combined into one or more transceivers 1018. One or more antennas 1022a-n are mounted to the housing and electrically coupled to the transceivers 1018.

[0151] The various components of the UE 1002 are coupled together by a bus system 1011, which may include a power bus, a control signal bus, and a status signal bus in addition to a data bus. However, for clarity, the various buses are illustrated in Figure 10 as the bus system 1011. The UE 1002 may also include a digital signal processor (DSP) 1013 for use in processing signals. The UE 1002 may also include a communications interface 1015 that provides user access to the functions of the UE 1002. The UE 1002 illustrated in Figure 10 is a functional block diagram rather than a listing of specific components.

[0152] FIG. 11 illustrates various components that may be utilized in a gNB 1160. The gNB 1160 described in connection with FIG. 11 may be implemented in accordance with the gNB 160 described in connection with FIG. 1. The gNB 1160 includes a processor 1103 that controls operation of the gNB 1160. The processor 1103 may also be referred to as a central processing unit (CPU). A memory 1105, which may include read-only memory (ROM), random access memory (RAM), a combination of the two, or any type of device capable of storing information, provides instructions 1107a and data 1109b to the processor 1103. A portion of the memory 1105 may also include non-volatile random access memory (NVRAM). Instructions 1107b and data 1109b may also reside within the processor 1103. The instructions 1107b and / or data 1109b loaded into the processor 1103 may include instructions 1107a and / or data 1109b from memory 1105 loaded for execution or processing by the processor 1103. The instructions 1107b may be executed by the processor 1103 to perform one or more of the methods described above.

[0153] The gNB 1160 may also include a housing that houses one or more transmitters 1117 and one or more receivers 1178 to enable transmission and reception of data. The transmitters 1117 and receivers 1178 may be combined into one or more transceivers 1176. One or more antennas 1180a-n are attached to the housing and electrically coupled to the transceivers 1176.

[0154] The various components of the gNB 1160 are coupled together by a bus system 1111, which may include a power bus, a control signal bus, and a status signal bus in addition to a data bus. However, for clarity, the various buses are shown in FIG. 11 as bus system 1111. The gNB 1160 may also include a digital signal processor (DSP) 1113 for use in processing signals. The gNB 1160 may also include a communications interface 1115 that provides user access to the functions of the gNB 1160. The gNB 1160 shown in FIG. 11 is a functional block diagram rather than a listing of specific components.

[0155] Figure 12 is a block diagram illustrating one implementation of a UE 1202 in which one or more of the systems and / or methods described herein may be implemented. The UE 1202 includes a transmitting means 1258, a receiving means 1220, and a controlling means 1224. The transmitting means 1258, the receiving means 1220, and the controlling means 1224 may be configured to perform one or more of the functions described in connection with Figure 1 above. Figure 10 above illustrates an example of the structure of a specific device in Figure 12. Various other structures may also be implemented to achieve one or more of the functions of Figure 1. For example, the DSP may be implemented in software.

[0156] 13 is a block diagram illustrating one implementation of a gNB 1360 in which one or more of the systems and / or methods described herein may be implemented. The gNB 1360 includes a transmitting means 1317, a receiving means 1378, and a control means 1382. The transmitting means 1317, the receiving means 1378, and the control means 1382 may be configured to perform one or more of the functions described in connection with FIG. 1 above. FIG. 11 above illustrates an example of the structure of the specific device of FIG. 13. Various other structures may also be implemented to achieve one or more of the functions of FIG. 1. For example, the DSP may be implemented by software.

[0157] 14 is a block diagram illustrating one implementation of a gNB 1460. The gNB 1460 may be an example of the gNB 160 described in connection with FIG. 1. The gNB 1460 may include an upper layer processor 1423, a DL transmitter 1425, an UL receiver 1433, and one or more antennas 1431. The DL transmitter 1425 may include a PDCCH transmitter 1427 and a PDSCH transmitter 1429. The UL receiver 1433 may include a PUCCH receiver 1435 and a PUSCH receiver 1437.

[0158] The upper layer processor 1423 may manage the physical layer behavior (DL transmitter and UL receiver behavior) and provide upper layer parameters to the physical layer. The upper layer processor 1423 may obtain transport blocks from the physical layer. The upper layer processor 1423 may send and / or obtain upper layer messages, such as RRC messages and MAC messages, to and / or from the UE's upper layer. The upper layer processor 1423 may provide PDSCH transmitter transport blocks and provide PDCCH transmitter transmission parameters associated with the transport blocks.

[0159] The DL transmitter 1425 may multiplex downlink physical channels and downlink physical signals (including reservation signals) and transmit them via transmit antenna 1431. The UL receiver 1433 may receive the multiplexed uplink physical channels and uplink physical signals via receive antenna 1431 and demultiplex them. The PUCCH receiver 1435 may provide UCI to the upper layer processor 1423. The PUSCH receiver 1437 may provide received transport blocks to the upper layer processor 1423.

[0160] 15 is a block diagram illustrating one implementation of a UE 1502. The UE 1502 may be an example of the UE 102 described in connection with FIG. 1. The UE 1502 may include an upper layer processor 1523, an UL transmitter 1551, a DL receiver 1543, and one or more antennas 1531. The UL transmitter 1551 may include a PUCCH transmitter 1553 and a PUSCH transmitter 1555. The DL receiver 1543 may include a PDCCH receiver 1545 and a PDSCH receiver 1547.

[0161] The upper layer processor 1523 may manage the physical layer behavior (UL transmitter and DL receiver behavior) and provide upper layer parameters to the physical layer. The upper layer processor 1523 may obtain transport blocks from the physical layer. The upper layer processor 1523 may send and / or obtain upper layer messages, such as RRC messages and MAC messages, to and / or from the UE's upper layer. The upper layer processor 1523 may provide transport blocks to the PUSCH transmitter and provide UCI to the PUCCH transmitter 1553.

[0162] The DL receiver 1543 may receive the multiplexed downlink physical channels and downlink physical signals via the receive antenna 1531 and demultiplex them. The PDCCH receiver 1545 may provide DCI to the upper layer processor 1523. The PDSCH receiver 1547 may provide received transport blocks to the upper layer processor 1523.

[0163] The term "computer-readable medium" refers to any available medium that can be accessed by a computer or processor. As used herein, the term "computer-readable medium" can refer to non-transitory, tangible medium that can be read by a computer and / or processor. By way of example and not limitation, computer-readable medium or processor-readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage, or any other medium that can be used to hold or store desired program code in the form of instructions or data structures and that can be accessed by a computer or processor. As used herein, disk and disc include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically and discs reproduce data optically using lasers.

[0164] It should be noted that one or more of the methods described herein may be implemented in the form of and / or performed using hardware. For example, one or more of the methods described herein may be implemented in and / or realized using a chipset, an application specific integrated circuit (ASIC), a large scale integrated circuit (LSI), an integrated circuit, or the like.

[0165] Each of the methods disclosed herein includes one or more steps or actions for achieving the described method. The method steps and / or actions may be interchanged with one another and / or combined into a single step without departing from the scope of the claims. In other words, unless a specific order of steps or actions is required for the proper operation of the described method, the order and / or use of specific steps and / or actions may be changed without departing from the scope of the claims.

[0166] It is to be understood that the claims are not limited to the precise configuration and components illustrated above. Various modifications, changes, and variations may be made in the arrangement, operation, and details of the systems, methods, and apparatus described herein without departing from the scope of the claims.

[0167] The program running on the gNB 160 or UE 102 according to the above-described system and method is a program (a program for operating a computer) that controls the CPU and other devices to implement the functions according to the described system and method. Information handled by these devices is temporarily stored in RAM during processing. The information is then stored in various ROMs or HDDs, and is read, modified, or written by the CPU as needed. The recording medium on which the program is stored may be, for example, any one of semiconductors (e.g., ROM, non-volatile memory cards, etc.), optical storage media (e.g., DVDs, MOs, MDs, CDs, BDs, etc.), magnetic storage media (e.g., magnetic tapes, flexible disks, etc.), and similar media. Furthermore, in some cases, the functions of the described system and method are implemented by executing the loaded program, and further, the functions of the described system and method are implemented in conjunction with an operating system or other application programs based on instructions from the program.

[0168] Furthermore, if the program is commercially available, it may be distributed on a portable recording medium, or it may be transmitted to a server computer connected via a network such as the Internet. In this case, the storage device within the server computer is also included. Furthermore, some or all of the gNB 160 and UE 102 according to the above-described system and method may be realized as an LSI, which is a general integrated circuit. Each functional block of the gNB 160 and UE 102 may be individually incorporated into a chip, or some or all of the functional blocks may be integrated into a chip. Furthermore, integrated circuit technology is not limited to LSI; the integrated circuits of the functional blocks may be realized using dedicated circuits or general-purpose processors. Furthermore, if an alternative integrated circuit technology to LSI emerges with advances in semiconductor technology, it may also be possible to use integrated circuits that apply that technology.

[0169] Furthermore, each functional block and various features of the base station apparatus and terminal apparatus used in each of the above-described implementations may be implemented or performed by electrical circuitry, typically an integrated circuit or multiple integrated circuits. Circuitry designed to perform the functions described herein may include a general-purpose processor, a digital signal processor (DSP), an application-specific or general-purpose integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, or individual hardware components, or a combination thereof. A general-purpose processor may be a microprocessor, or the processor may be a conventional processor, controller, microcontroller, or state machine. The general-purpose processor or each circuit described above may be implemented using digital or analog circuits. Furthermore, as advances in semiconductor technology emerge to provide integrated circuitry that replaces current integrated circuits, integrated circuits using this technology may also be used.

[0170] As used herein, the term "and / or" should be interpreted to mean one or more items. For example, the phrase "A, B, and / or C" should be interpreted to mean any of: A only, B only, C only, A and B (but not C), B and C (but not A), A and C (but not B), or all of A, B, and C. As used herein, the phrase "at least one of" should be interpreted to mean one or more items. For example, the phrase "at least one of A, B, and C" or "at least one of A, B, or C" should be interpreted to mean any of: A only, B only, C only, A and B (but not C), B and C (but not A), A and C (but not B), or all of A, B, and C. As used herein, the phrase "one or more of" should be interpreted to mean one or more items. For example, the phrase "one or more of A, B, and C" or "one or more of A, B, or C" should be interpreted to mean any of the following: A only, B only, C only, A and B (but not C), B and C (but not A), A and C (but not B), or all of A, B, and C.

Claims

1. a receiver configured to receive first information for configuring one or more Non-Zero Power Channel State Information (CSI)-Reference Signal (RS) resources and second information for configuring a CSI report; a measurement unit that measures information about a phase rotation value based on the second information; a transmitter for transmitting a CSI report including information about the phase rotation value; the second information is related to the first information; the first information includes a first parameter trs-Info, the first parameter trs-Info indicating one or more CSI-RS resources for time and frequency channel tracking; the second information includes a second parameter reportQuantity, the second parameter reportQuantity is set to a TDCI, and the TDCI indicates information about a phase rotation value; User equipment.

2. a transmitter configured to transmit first information for configuring one or more Non-Zero Power Channel State Information (CSI)-Reference Signal (RS) resources and second information for configuring a CSI report; a receiving unit that receives a CSI report including information about a phase rotation value measured based on the second information, the second information is related to the first information; the first information includes a first parameter trs-Info, the first parameter trs-Info indicating one or more CSI-RS resources for time and frequency channel tracking; the second information includes a second parameter reportQuantity, the second parameter reportQuantity is set to a TDCI, and the TDCI indicates information about a phase rotation value; Base station.

3. receiving first information for configuring one or more Non-Zero Power Channel State Information (CSI)-Reference Signal (RS) resources and second information for configuring CSI reporting; measuring a phase rotation value based on the second information; transmitting a CSI report including information regarding the phase rotation value; the second information is related to the first information; the first information includes a first parameter trs-Info, the first parameter trs-Info indicating one or more CSI-RS resources for time and frequency channel tracking; the second information includes a second parameter reportQuantity, the second parameter reportQuantity is set to a TDCI, and the TDCI indicates information about a phase rotation value; User equipment communication method.

Images