WO2023079540A1

WO2023079540A1 - Apparatus and method of measurement reporting for uplink transmission

Info

Publication number: WO2023079540A1
Application number: PCT/IB2022/060750
Authority: WO
Inventors: Li Guo
Original assignee: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Priority date: 2021-11-08
Filing date: 2022-11-08
Publication date: 2023-05-11

Abstract

According to one aspect of the present disclosure, a method of wireless communication of a user equipment (UE) is provided. The method may include generating, by at least one processor, a first capability report that indicates a first uplink (UL) transmission (Tx) configuration associated with a first Tx unit and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit, the second Tx unit being different than the first Tx unit. The method may include sending, by a communication interface, the first capability report that indicates the first UL Tx configuration associated with the first Tx unit and the second capability report that indicates the second UL Tx configuration associated with the second Tx unit to a base station.

Description

APPARATUS AND METHOD OF MEASUREMENT REPORTING FOR UPLINK TRANSMISSION

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of priorities to U.S. Provisional Application No. 63/263,739, filed November 8, 2021, entitled “METHODS AND APPARATUS OF TRANSMITTING SOUNDING REFERENCE SIGNAL WITH TRANSMISSION CONFIGURATION INDICATOR STATE,” and U.S. Provisional Application No. 63,264,334, filed November 19, 2021, entitled “METHODS AND APPARATUS OF MEASUREMENT REPORTING FOR UPLINK TRANSMISSION,” both of which are hereby incorporated by reference in their entireties.

BACKGROUND

[0002] Embodiments of the present disclosure relate to apparatus and method for wireless communication.

[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. In cellular communication, such as the 4th-gen eration (4G) Long Term Evolution (LTE) and the 5th- generation (5G) New Radio (NR), the 3rd Generation Partnership Project (3GPP) defines various measurement reporting procedures for uplink (UL) transmissions.

SUMMARY

[0004] According to one aspect of the present disclosure, a method of wireless communication of a user equipment (UE) is provided. The method may include generating, by at least one processor, a first capability report that indicates a first uplink (UL) transmission (Tx) configuration associated with a first Tx unit and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit, the second Tx unit being different than the first Tx unit. The method may include sending, by a communication interface, the first capability report that indicates the first UL Tx configuration associated with the first Tx unit and the second capability report that indicates the second UL Tx configuration associated with the second Tx unit to a base station. [0005] According to another aspect of the present disclosure, a method of wireless communication of a base station is provided. The method may include receiving, by a communication interface, a first capability report that indicates a first UL Tx configuration associated with a first Tx unit of a UE and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit of the UE. The method may include assigning, by at least one processor, a first PUSCH configuration for the first Tx unit based on the first capability report and a second PUSCH configuration associated with the second Tx unit based on the second capability report. The method may include sending, by the communication interface, a first indication of the first PUSCH configuration assigned to the first Tx unit and a second indication of the second PUSCH configuration assigned to the second Tx unit.

[0006] According to still another aspect of the present disclosure, an apparatus for wireless communication of a UE is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform generating, by at least one processor, a first capability report that indicates a first UL Tx configuration associated with a first Tx unit and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit, the second Tx unit being different than the first Tx unit. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending, by a communication interface, the first capability report that indicates the first UL Tx configuration associated with the first Tx unit and the second capability report that indicates the second UL Tx configuration associated with the second Tx unit to a base station.

[0007] According to yet another aspect of the present disclosure, a method of wireless communication of a UE is provided. The method may include receiving, by a communication interface, a list of channel measurement resources for measurement by the UE from a base station, the channel measurement resources including one or more of CSI-RS resources or SS/PBCH resources. The method may include measuring, by at least one processor, each of the channel measurement resources in the list. The method may include generating, by the at least one processor, a CRI or an SSBRI for each of the channel measurement resources. The method may include sending, by the communication interface, a report that includes the CRI or the SSBRI for each of the channel measurement resources to the base station.

[0008] According to a further aspect of the present disclosure, an apparatus for wireless communication of a UE is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving a list of channel measurement resources for measurement by the UE from a base station, the channel measurement resources including one or more of CSI-RS resources or SS/PBCH resources. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform measuring each of the channel measurement resources in the list. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform generating a CRI or an SSBRI for each of the channel measurement resources. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending a report that includes the CRI or the SSBRI for each of the channel measurement resources to the base station.

[0009] According to another aspect of the present disclosure, a method of wireless communication of a base station is provided. The method may include sending, by a communication interface, a list of channel measurement resources for measurement by a user equipment (UE), the channel measurement resources including one or more of CSI-RS resources or SS/PBCH resources to a user equipment. The method of receiving, by the communication interface, a CRI or an SSBRI for each of the channel measurement resources in the list from the UE. The method may include selecting, by at least one processor, a PUSCH configuration for the UE based on the CRI or the SSBRI for each of the channel measurement resources. The method may include sending, by the communication interface, an indication of the PUSCH configuration to the UE.

[0010] According to still a further aspect of the present disclosure, an apparatus for wireless communication of a base station is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending a list of channel measurement resources for measurement by a UE, the channel measurement resources including one or more of CSI-RS resources or SS/PBCH resources to a user equipment. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving a CRI or an SSBRI for each of the channel measurement resources in the list from the UE. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform selecting a PUSCH configuration for the UE based on the CRI or the SSBRI for each of the channel measurement resources. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending an indication of the PUSCH configuration to the UE.

[0011] According to yet another aspect of the present disclosure, a method of wireless communication of a UE is provided. The method may include receiving, by a communication interface, an indication of a common TCI state for use in PUCCH and PUSCH transmissions to a base station. The method may include identifying, by at least one processor, a UL Tx spatial filter for an SRS based on an RS associated with the common TCI state for use in the PUCCH or PUSCH transmissions. The method may include sending, by the communication interface, the SRS using the UL transmit spatial filter identified from the RS associated with the common TCI state to the base station.

[0012] According to a further aspect of the present disclosure, an apparatus for wireless communication of a UE is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving an indication of a common TCI state for use in PUCCH and PUSCH transmissions from a base station. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform identifying a UL Tx spatial filter for an SRS based on an RS associated with the common TCI state for use in the PUCCH or PUSCH transmissions. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending the SRS using the UL transmit spatial filter identified from the RS associated with the common TCI state to the base station.

[0013] According to still a further aspect of the present disclosure, a method of wireless communication of UE is provided. The method may include receiving, by a communication interface, a MAC CE that includes a TCI state ID field associated with a set of SRS resources located in a plurality of CCs and BWPs. The method may include identifying, by at least one processor, whether a TCI state associated with the set of SRS resources is a joint TCI state or a UL TCI state based on the TCI state identification field. The method may include transmitting, by the communication interface, an SRS using the plurality of CCs and BWPs using a UL transmit spatial filter assigned to a UL transmission by an RS.

[0014] According to yet another aspect of the present disclosure, an apparatus for wireless communication of a UE is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving a MAC CE that includes a TCI state ID field associated with a set of SRS resources located in a plurality of CCs and BWPs. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform identifying whether a TCI state associated with the set of SRS resources is a joint TCI state or a UL TCI state based on the TCI state identification field. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform transmitting an SRS using the plurality of CCs and BWPs using a UL transmit spatial filter assigned to a UL transmission by an RS.

[0015] These illustrative embodiments are mentioned not to limit or define the present disclosure, but to provide examples to aid understanding thereof. Additional embodiments are discussed in the Detailed Description, and further description is provided there.

BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated herein and form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable a person skilled in the pertinent art to make and use the present disclosure.

[0017] FIG. 1 illustrates an exemplary wireless network, according to some embodiments of the present disclosure.

[0018] FIG. 2 illustrates a block diagram of an exemplary node, according to some embodiments of the present disclosure.

[0019] FIG. 3 illustrates a conceptual flow diagram of a first exemplary data flow to achieve physical uplink shared channel (PUSCH) configuration selection, according to some embodiments of the present disclosure.

[0020] FIG. 4 illustrates a conceptual flow diagram of a second exemplary data flow to achieve multiple resource signal (RS) channel measurements, according to some embodiments of the present disclosure.

[0021] FIG. 5 illustrates a conceptual flow diagram of a third exemplary data flow to identify an uplink (UL) transmission (Tx) spatial filter for use in sending a sounding reference signal (SRS) based on a common TCI state indication, according to some embodiments of the present disclosure.

[0022] FIG. 6 illustrates a conceptual flow diagram of a fourth exemplary data flow to identify a UL Tx spatial filter for use in sending an SRS across a plurality of component carriers (CCs)/bandwidth parts (BWPs) based on a TCI state identification (ID) field in a medium access control (MAC) control element (CE) (MAC CE), according to some embodiments of the present disclosure.

[0023] FIG. 7 illustrates a block diagram of a first exemplary MAC CE, according to some embodiments of the present disclosure.

[0024] FIG. 8 illustrates a block diagram of a second exemplary MAC CE, according to some embodiments of the present disclosure.

[0025] FIG. 9 is a flowchart of a first exemplary method of wireless communication, according to some embodiments of the present disclosure.

[0026] FIG. 10 is a flowchart of a second exemplary method of wireless communication, according to some embodiments of the present disclosure.

[0027] FIG. 11 is a flowchart of a third exemplary method of wireless communication, according to some embodiments of the present disclosure.

[0028] FIG. 12 is a flowchart of a fourth exemplary method of wireless communication, according to some embodiments of the present disclosure.

[0029] FIG. 13 is a flowchart of a fifth exemplary method of wireless communication, according to some embodiments of the present disclosure.

[0030] FIG. 14 is a flowchart of a sixth exemplary method of wireless communication, according to some embodiments of the present disclosure.

[0031] Embodiments of the present disclosure will be described with reference to the accompanying drawings.

DETAILED DESCRIPTION

[0032] Although specific configurations and arrangements are discussed, it should be understood that this is done for illustrative purposes only. A person skilled in the pertinent art will recognize that other configurations and arrangements may be used without departing from the spirit and scope of the present disclosure. It will be apparent to a person skilled in the pertinent art that the present disclosure may also be employed in a variety of other applications.

[0033] It is noted that references in the specification to “one embodiment,” “an embodiment,” “an example embodiment,” “some embodiments,” “certain embodiments,” etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it would be within the knowledge of a person skilled in the pertinent art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

[0034] In general, terminology may be understood at least in part from usage in context. For example, the term “one or more” as used herein, depending at least in part upon context, may be used to describe any feature, structure, or characteristic in a singular sense or may be used to describe combinations of features, structures or characteristics in a plural sense. Similarly, terms, such as “a,” “an,” or “the,” again, may be understood to convey a singular usage or to convey a plural usage, depending at least in part upon context. In addition, the term “based on” may be understood as not necessarily intended to convey an exclusive set of factors and may, instead, allow for existence of additional factors not necessarily expressly described, again, depending at least in part on context.

[0035] Various aspects of wireless communication systems will now be described with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, units, components, circuits, steps, operations, processes, algorithms, etc. (collectively referred to as “elements”). These elements may be implemented using electronic hardware, firmware, computer software, or any combination thereof. Whether such elements are implemented as hardware, firmware, or software depends upon the particular application and design constraints imposed on the overall system.

[0036] The techniques described herein may be used for various wireless communication networks, such as code division multiple access (CDMA) system, time division multiple access (TDMA) system, frequency division multiple access (FDMA) system, orthogonal frequency division multiple access (OFDMA) system, single-carrier frequency division multiple access (SC- FDMA) system, wireless local area network (WLAN) system, and other networks. The terms “network” and “system” are often used interchangeably. A CDMA network may implement a radio access technology (RAT), such as Universal Terrestrial Radio Access (UTRA), evolved UTRA (E-UTRA), CDMA 2000, etc. A TDMA network may implement a RAT, such as the Global System for Mobile Communications (GSM). An OFDMA network may implement a RAT, such as LTE or NR. A WLAN system may implement a RAT, such as Wi-Fi. The techniques described herein may be used for the wireless networks and RATs mentioned above, as well as other wireless networks and RATs.

[0037] In a 5G NR network, a reference signal received power (RSRP) measurement or a signal-to-interference-to-noise ratio (SINR) is performed and reported at Layer 1 (LI) For example, a user equipment (UE) can provide synchronization signal (SS)-RSRP measurements to a base station using a Layer 1 protocol when sending channel state information (CSI).

[0038] For LI -RSRP -based beam reporting, the UE may be configured with up to sixty- four CSI-RS resources or SS/physical broadcast channel (PBCH) (SS/PBCH) blocks for Ll-RSRP measurement. The UE can select up to four CSLRS resources or SSBs from those configured resources. The UE may report the indicators of those selected CSLRS resources or SSBs and corresponding Ll-RSRP measurement results to the base station. Some UE may support a group- based Ll-RSRP beam report, in which a UE is configured with a resource setting for channel measurement that contains a set of non-zero power (NZP) CSI-RS resources or SS/PBCH blocks. Each NZP CSI-RS resource or SS/PBCH block may be used to represent one gNB transmit beam. The UE may be configured to measure the Ll-RSRP of those NZP CSI-RS resources or SS/PBCH blocks. Then, the UE can report two CSI reference signal resource indicators (CRIs) or SS/PBCH block resource indicators (SSBRIs) for two selected NZP CSI-RS resources or SS/PBCH blocks. Here, a single spatial domain receive filter or multiple simultaneous spatial domains receive filters may be used.

[0039] For LI -SINR based beam measurement and reporting, the UE can be configured with one of the following resource setting configurations: 1) the UE may be configured with one resource setting with a set of NZP CSI-RS resources for channel measurement and interference measurement, or 2) the UE may be configured with two resource settings. When two resource settings are configured, the first resource setting has a set of NZP CSI-RS resources or SS/PBCH blocks for channel measurements, and the second resource setting has a set of NZP CSI-RS resources or a zero-power (ZP) CSI-RS resource for interference measurement.

[0040] For an Ll-SINR beam report, the UE can report up to four CRIs or SSBRIs and the corresponding Ll-SINR measurement results. Some UEs may support group-based beam report of Ll-SINR is also support, in which the UE can report up to two CRIs or SSBRIs and the corresponding Ll-SINR measurement results. For an uplink transmission (e.g., such as a physical uplink control channel (PUCCH) transmission, a physical uplink shared channel (PUSCH) transmission, or a sounding reference signal (SRS), the UE may be provided with a configuration of spatial relation information, which includes an index of reference signal (RS) resources (e.g., an SRS resource, a CSI-RS resource, or SS/PBCH block) for multi-beam operation. For each uplink transmission, the UE may derive the uplink spatial transmit filter (or called uplink transmit beam) according to the indicated SRS resource index, the CSI-RS resource index, or the SS/PBCH block index.

[0041] Some UEs support the transmission of SRS for uplink CSI acquisition, downlink CSI acquisition based on channel reciprocity and uplink beam management. The base station may configure one or more SRS resource sets, and in each SRS resource set, the UE may be configured with one or more SRS resources. Each SRS resource may include two or four antenna ports. The SRS resources may be applied to different usage including, e.g., CSI acquisition, beam management and antenna switching. The different usages may be configured through a higher layer parameter for each SRS resource set. The SRS resource set applicability may be configured by the higher layer parameter usage in SRS-ResourceSet. If one SRS resource set is configured for usage (e.g., its value set to be ‘beamManagement’), the SRS resources included in that set are used for beam management.

[0042] The SRS transmission may be configured with one of the three-time domain behaviors: periodic, semi-persistent, or aperiodic through a higher layer parameter resourceType. For an SRS resource configured with higher layer parameter resourceType = ‘periodic’, the SRS resource is transmitted periodically in the slots determined according to the higher layer parameter slot level periodicity and slot level offset.

[0043] For a periodic SRS resource, the UE may be configured with a higher layer parameter spatialRelationlnfo that includes the identification (ID) of an RS such as, e.g., an SRS, a CSI-RS, or a SS/PBCH block.

[0044] For an SRS resource configured with higher layer parameter resourceType = ‘semi- persistent,’ the UE may receive a medium access control (MAC) control element (CE) activation or deactivation command to activate or deactivate the transmission of the SRS resource. When the

UE receives a MAC CE activation command and when the hybrid-automatic repeat-request (HARQ)-acknowledgment (ACK) (HARQ-ACK), which corresponds to the PDSCH carrying the activation command is transmitted in slot n, the corresponding action and the UE assumptions on SRS transmission corresponding to the SRS resource set shall be applied, starting from the first slot that, e.g., namely, after n + 3N^_o ^{b rame, l}. The MAC CE activation command may also include spatial relation assumptions associated with the SRS resources in the activated SRS resource set. For a semi-persistent SRS resource, the UE may be configured with spatialRelationlnfo in a radio resource control (RRC) parameter. For a semi-persistent SRS resource, a MAC CE command can be used to update the spatialRelationlnfo.

[0045] If an SRS resource is configured with higher layer parameter resourceType =’ aperiodic’, the transmission of the SRS resource may be trigged by downlink control information (DCI). If the UE receives the DCI triggering aperiodic SRS in slot n, the UE transmits aperiodic

SRS in each of triggered SRS resource sets in slot - +k , where k is configured via higher layer parameter slot offset for each triggered SRS resource set and is based on the subcarrier spacing of the triggered SRS transmission. For an aperiodic SRS resource, the UE may be provided with a spatial relation info through the higher layer parameter spatialRelationlnfo containing one ID of an SRS resource, a CSI-RS resource, or an SS/PBCH block. The UE can also receive a MAC CE spatial relation update command for an aperiodic SRS resource. When the HARQ-ACK corresponding to the physical downlink shared channel (PDSCH) carrying the MAC CE update command is received at slot n, the corresponding actions and the UE assumptions on updating spatial relation information for the SRS resource may be applied for SRS transmission starting from the first slot that is after slot n + 3N^^{b rame, l}.

[0046] For codebook-based PUSCH transmissions, the UE may be configured with one SRS resource set that includes one or two SRS resources. When the SRS resource set includes two SRS resources, the two SRS resources may have the same number of antenna ports. When a PUSCH transmission is sent, the UE may determine the PUSCH transmission precoder based on the value of the SRS resource indicator (SRI), transmit precoder matrix indicator (TPMI), and transmission rank. The SRI may indicate one of the SRS resources configured in the SRS resource set for codebook-based PUSCH transmissions. If the UE is configured with full power transmission mode 2, the SRS resources in the SRS resource set for codebook-based PUSCH transmission can be configured with different numbers of antenna ports.

[0047] For non-codebook-based PUSCH transmissions, the UE may be configured with one SRS resource set that includes one or more SRS resources, and the usage of this SRS resource is set to non-codebook. Each SRS resource may only be configured with one antenna port. For a non-codebook-based PUSCH transmission, the SRI may indicate one or more SRS resources from that set, and each indicated SRS resource may correspond to one layer in the PUSCH transmission. [0048] The major drawback of the existing measurement and reporting is that for a UE equipped with multiple UL transmission (Tx) units (also referred to as UL Tx panels), the UE assumes the same UL Tx configuration is applied to all the panels. For example, regardless of which panel is used for uplink transmission, the same UL Tx configuration (e.g., such as the same number of SRS ports, the maximum number of multiple-input multiple-output (MIMO) layers and maximum Tx power is used. However, a UE’s UL Tx units may have different hardware capabilit(ies). Thus, if the same UL Tx configuration is applied to each UL Tx unit, the configuration would have to consider the UL Tx unit with the least capability, e.g., such as the smallest number of ports or the smallest number of MIMO layers. This limits system performance and impairs the UL Tx data rate and spectrum efficiency.

[0049] To overcome these and other challenges related to a UL measurement and reporting, the present disclosure enables a UE to report a UE capability report (also referred to as a “UE capability value set”) that indicates the various capabilities for each UL Tx unit. The capabilities indicated in the UE capability report may include, e.g., a maximum number of antenna ports supported by a UL Tx unit, the maximum number of uplink MIMO layers supported by the UL Tx unit, the maximum rank, the type of antenna coherence, and the maximum transmit power. In some embodiments, the UE may be configured to measure a set of CSI-RS resources and/or SSB, and the UE can be requested to report CRIs or SSBRIs. Along with CRIs/SSBRIs, the UE may report one indicator that corresponds to one UE capability value set.

[0050] Some existing 5GNR systems are multi -beam based. In these systems, multiplexed Tx and Rx analog beams are employed by the base station and the UE to combat the large path loss in the high-frequency band, such as the millimeter Wave (mmWave) band. In a mmWave system, the base station and UE may be designed with a large number of antennas so that large gain beamforming can be used to defeat the large path loss and signal blockage. Due to the hardware limitation and cost, the base station and the UE might only be equipped with a limited number of transmission and reception units (TXRUs). Therefore, hybrid beamforming mechanisms may be used by the base station and UE. To achieve a high-quality link, the base station and UE may align analog beam directions for downlink (DL) and/or UL transmissions. For a DL transmission, the best pair of base station Tx beam and UE Rx beam are identified, while for a UL transmission, the best pair of UE Tx beam and base station Rx beam are identified.

[0051] For a UL transmission, the UE can transmit an SRS train the channel state of uplink channel. The UE can transmit an SRS using an SRS resource that may be usage and purposespecific. The different types of SRS resources may include: 1) an SRS resource for beam management (e.g., the SRS resource for beam management can be used to sweep the UE uplink transmit beam and thus to obtain beam alignment for uplink transmission, 2) an SRS resource for codebook-based transmission or non-codebook based transmission (e.g., the SRS resource for codebook-based transmission or non-codebook based transmission is used by the system to obtain the CSI of uplink transmission and then obtain the best precoder, rank, and channel quality indicator (CQI) for a PUSCH transmission, and 3) an SRS resource for antenna switching (e.g., the SRS resource with this usage is by the UE to train DL channel with less number of Tx antennas).

[0052] For each SRS resource, the base station can provide the following parameters for UL transmission: 1) a parameter to indicate the information of uplink transmit beam (e.g., each SRS resource can be provided higher layer parameter spatialRelationlnfo, which includes the ID of one SSB, CSI-RS resource, or an SRS resource), and 2) parameters for uplink power control (e.g., the uplink power control parameters are configured per SRS resource set such that all the SRS resources included in one SRS resource set share the same parameters of uplink power control, and for one SRS resource set, the system can provide the path loss RS, open power control parameter P0, alpha and closed loop index for closed loop power control).

[0053] In some 5G NR systems, a unified transmission configuration indicator (TCI) framework is specified for physical downlink control channel (PDCCH)/PDSCH/PUCCH/PUSCH transmissions. The base station uses DCI to indicate one joint TCI state or one pair of DL TCI state and UL TCI state, which provide a common DL TCI for all the PDCCH and PDSCH transmissions and a common UL TCI for all PUSCH and PUCCH transmissions. Optionally, the system can indicate that some SRS resources may follow the DCI that indicates the common UL TCI. If one SRS resource is not configured to follow the DCI that indicates the common UL TCI, the system may provide such information UL Tx beam and UL power control parameters associated with the SRS through higher layers (e.g., RRC signaling). In other words, the system provides the information of UL Tx beam to the SRS resource through high layer parameter spatialRelationlnfo. The drawback is the redundancy of high layer parameter definition. The system provides joint TCI state or UL TCI state to provide the information of UL Tx beam. On the other hand, the system would have to provide the high layer parameter spatialRelationlnfo to provide information of UL Tx beam too. The consequence is the large overhead of configuration information and thus, the system efficiency is impaired.

[0054] To overcome these and other challenges related to transmitting SRS in a unified TCI framework, the present disclosure provides an exemplary mechanism to configure and update a joint TCI state or UL TCI state for semi-persistent SRS resources and aperiodic SRS resources, convey information associated with power control parameters and path loss related to the SRS resources to the UE, indicate/update the TCI state for SRS resource in multiple component carriers (CCs)/bandwidth parts (BWPs), and/or indicate default information for SRS resources for different TCI states. Additional details of the exemplary techniques are provided below in connection with FIGs. 1-14.

[0055] FIG. 1 illustrates an exemplary wireless network 100, in which some aspects of the present disclosure may be implemented, according to some embodiments of the present disclosure. As shown in FIG. 1, wireless network 100 may include a network of nodes, such as UE 102, an access node 104 (also referred to herein as a “TRP”), and a core network element 106. UE 102 may be any terminal device, such as a mobile phone, a desktop computer, a laptop computer, a tablet, a vehicle computer, a gaming console, a printer, a positioning device, a wearable electronic device, a smart sensor, or any other device capable of receiving, processing, and transmitting information, such as any member of a vehicle to everything (V2X) network, a cluster network, a smart grid node, or an Intemet-of-Things (loT) node. It is understood that UE 102 is illustrated as a mobile phone simply by way of illustration and not by way of limitation.

[0056] Access node 104 may be a device that communicates with UE 102, such as a wireless access point, a base station (BS), a Node B, an enhanced Node B (eNodeB or eNB), a next-generation NodeB (gNodeB or gNB), a cluster master node, or the like. Access node 104 may have a wired connection to UE 102, a wireless connection to UE 102, or any combination thereof. Access node 104 may be connected to UE 102 by multiple connections, and UE 102 may be connected to other access nodes in addition to access node 104. Access node 104 may also be connected to other user equipments. When configured as a gNB, access node 104 may operate in millimeter wave (mmW) frequencies and/or near mmW frequencies in communication with the UE 102. When access node 104 operates in mmW or near mmW frequencies, the access node 104 may be referred to as an mmW base station. Extremely high frequency (EHF) is part of the radio frequency (RF) in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters. Radio waves in the band may be referred to as a millimeter wave. Near mmW may extend down to a frequency of 3 GHz with a wavelength of 200 millimeters. The super high frequency (SHF) band extends between 3 GHz and 30 GHz, also referred to as centimeter wave. Communications using the mmW or near mmW radio frequency band have extremely high path loss and a short range. The mmW base station may utilize beamforming with UE 102 to compensate for the extremely high path loss and short range. It is understood that access node 104 is illustrated by a radio tower by way of illustration and not by way of limitation.

[0057] Access nodes 104, which are collectively referred to as E-UTRAN in the evolved packet core network (EPC) and as NG-RAN in the 5G core network (5GC), interface with the EPC and 5GC, respectively, through dedicated backhaul links (e.g., SI interface). In addition to other functions, access node 104 may perform one or more of the following functions: transfer of user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection setup and release, load balancing, distribution for non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment trace, RAN information management (RIM), paging, positioning, and delivery of warning messages. Access nodes 104 may communicate directly or indirectly (e.g., through the 5GC) with each other over backhaul links (e.g., X2 interface). The backhaul links may be wired or wireless.

[0058] Core network element 106 may serve access node 104 and UE 102 to provide core network services. Examples of core network element 106 may include a home subscriber server (HSS), a mobility management entity (MME), a serving gateway (SGW), or a packet data network gateway (PGW). These are examples of core network elements of an evolved packet core (EPC) system, which is a core network for the LTE system. Other core network elements may be used in LTE and in other communication systems. In some embodiments, core network element 106 includes an access and mobility management function (AMF), a session management function (SMF), a user plane function (UPF), or the location management function (LMF) of the 5GC for the NR system. The AMF may be in communication with a Unified Data Management (UDM). The AMF is the control node that processes the signaling between the UE 102 and the 5GC. Generally, the AMF provides QoS flow and session management. All user Internet protocol (IP) packets are transferred through the UPF. The UPF provides user equipment (UE) IP address allocation as well as other functions. The UPF is connected to the IP Services. The IP Services may include the Internet, an intranet, an IP Multimedia Subsystem (IMS), a PS Streaming Service, and/or other IP services. The LMF is the network entity in the 5GC that supports location determination for UE 102, obtains exemplary UL UE positioning measurements from access node 104 (e.g., via the NG RAN), and obtains exemplary DL UE positioning measurements from UE 102. Using either the exemplary UL UE positioning measurements from access node 104 or DL UE positioning measurements from UE 102, the LMF may identify the location of UE 102 with a high degree of accuracy. It is understood that core network element 106 is shown as a set of rackmounted servers by way of illustration and not by way of limitation.

[0059] Core network element 106 may connect with a large network, such as Internet 108, or another Internet Protocol (IP) network, to communicate packet data over any distance. In this way, data from UE 102 may be communicated to other user equipments connected to other access points, including, for example, a computer 110 connected to Internet 108, for example, using a wired connection or a wireless connection, or to a tablet 112 wirelessly connected to Internet 108 via a router 114. Thus, computer 110 and tablet 112 provide additional examples of possible user equipments, and router 114 provides an example of another possible access node.

[0060] A generic example of a rack-mounted server is provided as an illustration of core network element 106. However, there may be multiple elements in the core network including database servers, such as a database 116, and security and authentication servers, such as an authentication server 118. Database 116 may, for example, manage data related to user subscription to network services. A home location register (HLR) is an example of a standardized database of subscriber information for a cellular network. Likewise, authentication server 118 may handle authentication of users, sessions, and so on. In the NR system, an authentication server function (AUSF) device may be the entity to perform user equipment authentication. In some embodiments, a single server rack may handle multiple such functions, such that the connections between core network element 106, authentication server 118, and database 116, may be local connections within a single rack.

[0061] Each element in FIG. 1 may be considered a node of wireless network 100. More detail regarding the possible implementation of a node is provided by way of example in the description of a node 200 in FIG. 2. Node 200 may be configured as UE 102, access node 104, or core network element 106 in FIG. 1. Similarly, node 200 may also be configured as computer 110, router 114, tablet 112, database 116, or authentication server 118 in FIG. 1. As shown in FIG. 2, node 200 may include a processor 202, a memory 204, and a transceiver 206. These components are shown as connected to one another by a bus, but other connection types are also permitted. When node 200 is UE 102, additional components may also be included, such as a user interface (UI), sensors, and the like. Similarly, node 200 may be implemented as a blade in a server system when node 200 is configured as core network element 106. Other implementations are also possible.

[0062] Transceiver 206 may include any suitable device for sending and/or receiving data. Node 200 may include one or more transceivers, although only one transceiver 206 is shown for simplicity of illustration. An antenna 208 is shown as a possible communication mechanism for node 200. Multiple antennas and/or arrays of antennas may be utilized for receiving multiple spatially multiplex data streams. Additionally, examples of node 200 may communicate using wired techniques rather than (or in addition to) wireless techniques. For example, access node 104 may communicate wirelessly to UE 102 and may communicate by a wired connection (for example, by optical or coaxial cable) to core network element 106. Other communication hardware, such as a network interface card (NIC), may be included as well.

[0063] As shown in FIG. 2, node 200 may include processor 202. Although only one processor is shown, it is understood that multiple processors may be included. Processor 202 may include microprocessors, microcontroller units (MCUs), digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout the present disclosure. Processor 202 may be a hardware device having one or more processing cores. Processor 202 may execute software. Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. Software may include computer instructions written in an interpreted language, a compiled language, or machine code. Other techniques for instructing hardware are also permitted under the broad category of software. [0064] As shown in FIG. 2, node 200 may also include memory 204. Although only one memory is shown, it is understood that multiple memories may be included. Memory 204 may broadly include both memory and storage. For example, memory 204 may include random-access memory (RAM), read-only memory (ROM), static RAM (SRAM), dynamic RAM (DRAM), ferroelectric RAM (FRAM), electrically erasable programmable ROM (EEPROM), compact disc readonly memory (CD-ROM) or other optical disk storage, hard disk drive (HDD), such as magnetic disk storage or other magnetic storage devices, Flash drive, solid-state drive (SSD), or any other medium that may be used to carry or store desired program code in the form of instructions that may be accessed and executed by processor 202. Broadly, memory 204 may be embodied by any computer-readable medium, such as a non-transitory computer-readable medium.

[0065] Processor 202, memory 204, and transceiver 206 may be implemented in various forms in node 200 for performing wireless communication functions. In some embodiments, at least two of processor 202, memory 204, and transceiver 206 are integrated into a single system- on-chip (SoC) or a single system-in-package (SiP). In some embodiments, processor 202, memory 204, and transceiver 206 of node 200 are implemented (e.g., integrated) on one or more SoCs. In one example, processor 202 and memory 204 may be integrated on an application processor (AP) SoC (sometimes known as a “host,” referred to herein as a “host chip”) that handles application processing in an operating system (OS) environment, including generating raw data to be transmitted. In another example, processor 202 and memory 204 may be integrated on a baseband processor (BP) SoC (sometimes known as a “modem,” referred to herein as a “baseband chip”) that converts the raw data, e.g., from the host chip, to signals that may be used to modulate the carrier frequency for transmission, and vice versa, which may run a real-time operating system (RTOS). In still another example, processor 202 and transceiver 206 (and memory 204 in some cases) may be integrated on an RF SoC (sometimes known as a “transceiver,” referred to herein as an “RF chip”) that transmits and receives RF signals with antenna 208. It is understood that in some examples, some or all of the host chip, baseband chip, and RF chip may be integrated as a single SoC. For example, a baseband chip and an RF chip may be integrated into a single SoC that manages all the radio functions for cellular communication.

[0066] Referring back to FIG. 1, in some embodiments, UE 102 may report a UE capability report that indicates the various capabilities for each of its UL Tx unit. The capabilities indicated in the UE capability report may include, e.g., a maximum number of antenna ports supported by a UL Tx unit, the maximum number of uplink MIMO layers supported by the UL Tx unit, the maximum rank, the type of antenna coherence, and the maximum transmit power. In some embodiments, the UE may be configured to measure a set of CSI-RS resources and/or SSB and the UE can be requested to report CRIs or SSBRIs. Along with CRIs/SSBRIs, the UE may report one indicator that corresponds to one UE capability value set.

[0067] Still referring to FIG. 1, in some embodiments, UE 102 and access node 104 support an exemplary mechanism that configures and updates a joint TCI state or UL TCI state for semi-persistent SRS resources and aperiodic SRS resources, conveys information associated with power control parameters and path loss related to the SRS resources to UE 102, indicates/updates the TCI state for SRS resource in multiple CCs/ BWPs, and/or indicate default information for SRS resources for different TCI states.

[0068] FIG. 3 illustrates a conceptual flow diagram of an exemplary data flow 300 for reporting UE capabilities for different UL Tx units to a base station, according to some embodiments of the present disclosure. The various operations implemented by a UE 302 and a base station 304 when performing the exemplary UE capability reporting and PUSCH configuration assignment for different UL Tx units.

[0069] Referring to FIG. 3, using the example of two UL Tx units, the UE 102 may generate (at 301) a first UE capability report for a first UL Tx unit and a second capability report for a second UL Tx unit. Each of the UE capability reports may indicate the supported UL Tx configuration supported by its UL Tx unit. For example, a UL Tx configuration for a UL Tx unit may include an indication of one or more of, e.g., a maximum-supported transmit power, a maximum number of layers supported for a PUSCH transmission (also referred to as a “maximum rank”), a maximum number of antenna ports, a codebook or non-codebook Tx configuration, and/or an antenna coherence-type, just to name a few. Once generated, UE 302 may send (at 303) the first UE capability report and the second UE capability report (either individually or in the same transmission) to base station 304. Based on the first UE capability report and the second UE capability report, base station 304 may select (at 305) a first PUSCH configuration for the first UL Tx unit and a second PUSCH configuration for the second UL Tx unit, respectively. The first PUSCH configuration may be associated with a first set of PUSCH configuration parameters, and the second PUSCH configuration may be associated with a second set of PUSCH configuration parameters. For instance, the set of PUSCH configuration parameters may include, e.g., a higher layer parameter to configure the codebook subset, a maximum transmit power, a maximum number of layers for use in a PUSCH transmission, a PUSCH scramble identifier for PUSCH, a codebook or non-codebook Tx configuration, a DM-RS type, a PUSCH power control parameter, a configuration of PUSCH frequency hopping, the type of PUSCH resource allocation (e.g., dynamic, semi-persistent, or static), a PUSCH aggregation factor, an MCS table configuration, an indication as to whether the transformPrecoder is enabled or disabled, the resource block group (RBG) size, and/or a PUSCH time-domain allocation-list, just to name a few. Once generated, the first PUSCH configuration for the first UL Tx unit and the second PUSCH configuration for the second UL Tx unit may be sent (at 307) to UE 302. Using the first PUSCH configuration, UE 302 may send (at 309a) a first PUSCH transmission using the first UL Tx unit. A second PUSCH transmission may be sent (at 309b) by the second UL Tx unit based on the second PUSCH configuration.

[0070] Moreover, each PUSCH configuration may be associated with a different SRS resource set (e.g., a CSI-RS, SSBs, codebook-based resource set, non-codebook-based resource set, etc.) that UE 302 may use for channel measurements. For example, the first PUSCH configuration may include a list of first CSI-RS resources and/or SSBs. UE 302 may perform (at 311) a first channel measurement using the first set of RSs associated with the first PUSCH configuration and a second channel measurement using a second set of RS associated with the second PUSCH configuration. Based on the channel measurements, UE 302 may generate a first CRI or SSBRI (depending on whether the RS resource set includes CSI-RS or SSBs) for the first PUSCH configuration and a second CRI or SSBRI for the second PUSCH configuration. Once generated, UE 302 may send (at 313) the first CRI or SSBRI and the second CRI or SSBRI to base station 304. Base station 304 may send (at 315) an acknowledgment (or negative acknowledgment) to UE 302 when the first CRI/SSBRI or second CRI/SSBRI is received. Based on the first CRI/SSBRI, base station 304 may select one of the SRS resource sets for the first UL Tx unit to use in sending an SRS before a first PUSCH transmission. Similarly, base station 304 may select one of the SRS resource sets for the second UL Tx unit to use in sending an SRS before a second PUSCH transmission.

[0071] In some embodiments, base station 304 may request UE 302 to perform channel measurements using different SRS resource sets for each UL Tx unit. Then, based on the channel measurements and the UE capability report, base station 304 may indicate the PUSCH configuration and the SRS resource set for use in a PUSCH transmission by the corresponding UL Tx unit. Base station 304 may indicate the PUSCH configuration/SRS resource set for a UL Tx unit via RRC signal, a MAC-CE, or DCI.

[0072] Base station 304 may configure an association between a TCI state that provides an RS for reference to the UL Tx spatial filter that corresponds to the selected PUSCH transmission and SRS resource set for a UL Tx unit. For example, base station 304 can indicate the choice of PUSCH configuration, and SRS resource set implicitly through the CSI-RS or SSB in an indicted TCI state that provides a reference for UL Tx spatial filter.

[0073] In some other embodiments, UE 302 may indicate a selection of one set of the PUSCH configurations and one SRS set for use in sending a PUSCH transmission to the base station. Base station 304 may use DCI to schedule a PUSCH transmission, and UE 302 may apply to the selected PUSCH configuration and SRS resource set on the scheduled PUSCH transmission by the corresponding UL Tx unit.

[0074] In some embodiments, the UE capability report may include a UE capability value set for each SRS resource set for the PUSCH transmission. The UE capability value set for each SRS resource set may indicate, e.g., the maximum number of supported SRS resources, the maximum number of SRS antenna ports, the maximum number of MIMO uplink layers, the maximum number of ranks for MIMO uplink transmission, the maximum Tx power, the maximum number of Tx antennas, and/or the coherence type of the antenna port of SRS (e.g., UE 302 can report coherent antenna, partial coherent antenna, or non-coherent antenna), just to name a few.

[0075] In some embodiments, UE 302 may report its maximum number of supported PUSCH configurations. For each PUSCH configuration, this report may include PUSCH configuration parameters that include, e.g., the maximum number of SRS resources, the maximum number of SRS antenna ports, the maximum number of MIMO uplink layers, the maximum number of rank for MIMO uplink transmission, the maximum Tx power, the maximum number of Tx antennas, and/or the coherence type of the antenna port of SRS (e.g., UE 302 can report coherent antenna, partial coherent antenna, or non-coherent antenna), just to name a few.

[0076] FIG. 4 illustrates a conceptual flow diagram of an exemplary data flow 400 for providing a UE with a list of CSI-RS or SS/PBCH resource for use in channel measurement, according to some embodiments of the present disclosure. The various operations implemented by a UE 402 and a base station 404 when implementing the exemplary CSI-RS or SS/PBCH resource list for channel measurement.

[0077] Referring to FIG. 4, base station 404 may send (at 401) a list of CSI-RS or SS/PBCH resources for measurement to UE 402. UE 402 may measure (at 403) each of the CSI-RS or SS/PBCH resources in the list. For each of the measurement CSI-RS or SS/PBCH resources, UE 402 may generate (at 405) a CRI or SSBRI, depending on whether CSI-RS or SS/PBCH resources are measured. UE 402 may report (at 407) the CRI or SSBRI for each of the measured resources to base station 404. Along with each CRI/SSBRI, UE 402 may report a corresponding an Ll- RSRP measurement, an Ll-SINR measurement, an indictor to indicate the value of the first index that corresponds to a PUSCH configuration from a set of PUSCH configurations, an indicator of one of the SRS resource set for PUSCH transmission, an indicator of a maximum number of SRS antenna ports, an indicator of a maximum number uplink MIMO layers, an indicator of a maximum UL MIMO rank, an indicator of the coherence of antennas, an indicator of a codebook subset, and/or an indicator that indicates maximum Tx power, just to name a few. This information may be reported via a MAC CE or uplink control information (UCI), for example. In some embodiments, base station 404 may send an acknowledgment (or negative acknowledgment) in response to the CRESSBRI(s) report.

[0078] In some embodiments, UE 402 and base station 404 may determine the application time of reported information as follows: 1) UE 402 and base station 404 assume that the reported information is applied starting from the first slot that is X ms or Y symbols after the MAC CE or UCI carrying the CRESSBRI information, or 2) UE 402 and base station 404 assume that the reported information is applied starting from the first slot that is X ms or Y symbols after the acknowledgment to the MAC CE or UCI carrying the UE reporting information.

[0079] In some embodiments, UE 402 may measure a set of N CSI-RS resources and/or SS/PBCH blocks. Base station 404 may request UE 402 report K > Inumber of CRIs or SSBRIs from the N number of CSI-RS, and for each CRESSBRI, UE 402 may report one Ll-RSRP or differential Ll-RSRP. UE 402 can also be requested to report one index value that indicates one UE capability value set. The system can assume in one beam reporting instance, all the reported K CRIs/SSBRIs correspond to the UE capability value set that is indicated by the index value reported in the same beam reporting instance. This embodiment may be applicable to a scenario that UE 402 activates one UL Tx unit at one time, and UE 402 uses a single UL Tx panel measure those CSI-RS resources or SS/PBCH resources. Here, UE 402 only reports one index value that corresponds to the UL Tx unit used in the measurement.

[0080] In one reporting instance, UE 402 may report, e.g., the K number of CRIs or SSBRIs

(e.g., 1, 2, 3, 4, etc.), one Ll-RSRP value using a number of bits (e.g., 7 bits), K-l differential Ll- RSRP values with a number of bits (e.g., 4 bits), where the differential Ll-RSRP may be calculated with reference to the maximum Ll-RSRP value reported in the reporting instance, one index value that corresponds to one UE capability value set, where the bit length of this one index value may be indicated with [log₂ C] bits, where C is the number of UE capability value sets that UE 402 reports in UE capability reporting. In another example, the bit length of this index value can be fixed to 1 bit, 2 bits, or 3 bits.

[0081] In some embodiments, UE 402 may be requested to measure K > 1 pairs of CRIs or SSBRIs that can be received by UE 402 simultaneously. Here, base station 404 may request that UE report one index value that indicates one UE capability value set. For example, base station 404 may request that UE 402 report one index value along with K pair of CRIs or SSBRIs. In one reporting instance, UE 402 may report one or more of, e.g., K pairs of CRIs or SSBRIs (e.g., example K pairs of {CRH, CRI2} or K pairs of {SSBRI1, SSBRI2}), or one index value that corresponds to one UE capability value set.

[0082] In some embodiments, base station 404 may request that UE 402 report one index value for each pair of CRIs or SSBRIs. Here, in one reporting instance, the UE reports one or more of, e.g., K pairs of CRIs or SSBRIs (e.g., K pairs of {CRH, CRI2} or K pairs of {SSBRI1, SSBRI2}), or K index values, where each index value is associated with one pair of CRIs or SSBRIs and corresponds to one UE capability value set.

[0083] Based on the CRI(s)/SSBRI(s), base station 404 may select (at 409) a PUSCH configuration for use by UE 402 in sending PUSCH transmissions. The PUSCH configuration may be sent (411) to UE 402.

[0084] FIG. 5 illustrates a conceptual flow diagram of an exemplary data flow 500 for an exemplary technique to associate an SRS resource set with a TCI state, according to some embodiments of the present disclosure. The various operations of FIG. 5 may be implemented by a UE 502 and a base station 504.

[0085] Referring to FIG. 5, UE 502 may be provided with Ni joint TCI states or N2 DL TCI states and N3 UL TCI states by base station 504. In a joint TCI state, a CSI-RS resource configured with QCL type set to TypeD can be used to provide reference information for UL Tx spatial filter for an uplink transmission (e.g., a PUCCH or PUSCH transmission). In a UL TCI state, an RS can be provided to UE 502 to indicate (at 501) reference information for the UL Tx spatial filter for the uplink transmission. UE 502 may identify (at 503) the UL Tx spatial filter based on the RS. Base station 504 may use DCI format 1 1 or 1 2 to indicate (at 505) one joint TCI state or one UL TCI state to provide a common UL TCI for PUCCH and PUSCH transmissions. Base station 504 may indicate whether one SRS resource shall follow this DCI- indicated common UL TCI. Each joint TCI state or UL TCI state may be associated with one RS resource that may be used to identify path loss. The RS resource may be an SSB or CSI-RS resource, for example. For SRS transmission, each joint TCI state or UL TCI state may be associated with a set of power control parameters including, e.g., open loop power control parameter P0, alpha and closed loop index. For an SRS resource that is not configured to follow the DCI-indicated common UL TCI, base station 504 provides (at 505) a joint TCI state or UL TCI state to the SRS resource to provide reference information for the UL Tx spatial filter. UE 502 may identify (at 507) the UL Tx spatial filter for the SRS based on the common TCI state indication.

[0086] For a periodic SRS resource, base station 504 may provide (at 505) a joint TCI state or UL TCI state (associated with the periodic SRS resource), the UE shall transmit (at 511) the target SRS resource with the same UL Tx spatial filter that corresponds to the reference RS associated with the configured joint TCI state or UL TCI state from the common TCI state indication. The SRS may be transmitted (at 511) in response to an SRS request sent (at 509) by base station 504.

[0087] For a semi-persistent SRS resource, base station 504 may provide (at 505) a joint TCI state or UL TCI state (associated with the SRS resource) via RRC signaling or a MAC CE activation command for the semi-persistent SRS resource, UE 502 may transmit (at 511) the target SRS resource with the same UL Tx spatial filter corresponding to the reference RS associated with the configured joint TCI state or UL TCI state for the common TCI state received via the RRC signaling or the MAC CE activation command.

[0088] For an aperiodic SRS resource, base station 504 may provide a joint TCI state or UL TCI state (associated with the aperiodic SRS resource), and UE 502 may transmit (at 509) the target SRS resource with the same UL Tx spatial filter corresponding to the reference RS provided in the joint TCI state or UL TCI state by the common TCI state indication configured via RRC signaling or the MAC CE command. The system can also use MAC CE command to update TCI state configured to one SRS resource. In the MAC CE command, base station 504 may provide an updated joint TCI state or a UL TCI state for an SRS resource.

[0089] FIG. 6 illustrates a conceptual flow diagram of an exemplary data flow 600 for an exemplary technique to update a TCI state for a semi-persistent SRS resource set or aperiodic SRS resource set, according to some embodiments of the present disclosure. The various operations of FIG. 6 may be implemented by a UE 602 and a base station 604. FIG. 7 is a diagram 700 of a first exemplary MAC CE, according to some embodiments of the present disclosure. FIG. 8 is a diagram 800 of a second exemplary MAC CE, according to some embodiments of the present disclosure. FIGs. 6-8 will be described together.

[0090] Referring to FIG. 6, base station 604 may indicate (at 601) the joint TCI state or UL TCI state for a semi-persistent SRS resource set or an aperiodic SRS resource set using a TCI state field in a MAC CE. In the MAC CE, base station 604 may provide an SRS resource set ID, among others. For each SRS resource included in the indicated SRS resource set, base station 604 may provide a TCI state ID and an indication of the type of TCI state (e.g., whether indicated TCI state is a joint TCI state or a UL TCI state). An example of the MAC CE is depicted in FIG. 7, where the “TCI State ID ” field indicates a TCI State (e.g., joint TCI state or UL TCI state) and the “F ” field indicates whether the TCI state indicated by field of “TCI state IDi” is a joint TCI state or UL TCI state.

[0091] The joint TCI state or UL TCI state may be associated with an RS with a corresponding UL Tx spatial filter. UE 602 may identify (at 603) the UL Tx spatial filter for transmitting SRS based on the RS corresponding to the TCI state indicated in the TCI state field of the MAC CE.

[0092] UE 602 may transmit (at 605) an SRS using the allocated SRS resource with the UL Tx spatial filter that is determined according to the RS resource provided in indicated joint TCI state or UL TCI state.

[0093] In some embodiments, base station 604 may use the MAC CE sent (at 601) to indicate the TCI state for SRS resource in a set of CCs/BWPs. The applicable list of CCs can be indicated by higher layer parameters. In the MAC CE, base station 604 may indicate one joint TCI state or one UL TCI state. The indicated TCI state may be applied for the SRS resource with the same SRS resource ID for all the BWPs in the indicated CCs. Base station 604 may indicate one or more of, e.g., one SRS resource ID, one TCI state for the SRS resource ID, and one indicator to indicate the type of the indicated TCI state: joint TCI state or UL TCI state, one joint TCI state, and/or one UL TCI state, just to name a few. An example of such a MAC CE is depicted in FIG. 8.

[0094] Referring to FIG. 8, the MAC Ce may include, e.g., an “SRS resource IDi” field that indicates one SRS resource ID, a “TCI State IDi” field that indicates a TCI state (e.g., either a joint TCI state or a UL TCI state) for the SRS resource indicated by the “SRS resource ID ” field, an “Fi” indicates whether the TCI state indicated “TCI state ID ” field is a joint TCI state or UL TCI state.

[0095] FIG. 9 is a flowchart of a first exemplary method 900 of wireless communication, according to some embodiments of the present disclosure. Method 900 may be performed by an apparatus for wireless communication, e.g., such as UE 102, 302, just to name a few. Method 900 may include operations 902-912 as described below. It is to be appreciated that some of the operations may be optional, and some of the operations may be performed simultaneously, or in a different order than shown in FIG. 9.

[0096] Referring to FIG. 9, at 902, the apparatus may generate, by at least one processor, a first capability report that indicates a first UL Tx configuration associated with a first Tx unit and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit. For example, referring to FIG. 3, using the example of two UL Tx units, the UE 102 may generate (at 301) a first UE capability report for a first UL Tx unit and a second capability report for a second UL Tx unit. Each of the UE capability reports may indicate the supported UL Tx configuration supported by its UL Tx unit. For example, a UL Tx configuration for a UL Tx unit may include an indication of one or more of, e.g., a maximum-supported transmit power, a maximum number of layers supported for a PUSCH transmission (also referred to as a “maximum rank”), a maximum number of antenna ports, a codebook or non-codebook Tx configuration, and/or an antenna coherence-type, just to name a few.

[0097] At 904, the apparatus may send, by a communication interface, the first capability report that indicates the first UL Tx configuration associated with the first Tx unit and the second capability report that indicates the second UL Tx configuration associated with the second Tx unit to a base station. For example, referring to FIG. 3, once generated, UE 302 may send (at 303) the first UE capability report and the second UE capability report (either individually or in the same transmission) to base station 304.

[0098] At 906, the apparatus may receive, by the communication interface, a first PUSCH configuration associated with the first Tx unit and a second PUSCH configuration associated with the second Tx unit from the base station. For example, referring to FIG. 3, the first PUSCH configuration for the first UL Tx unit and the second PUSCH configuration for the second UL Tx unit may be sent (at 307) to UE 302.

[0099] At 908, the apparatus identifies, by the at least one processor, a first set of PUSCH transmission parameters for the first Tx unit based on the first PUSCH configuration and a second set of PUSCH transmission parameters for the second Tx unit based on the second PUSCH configuration. For example, referring to FIG. 3, UE 302 may identify the first PUSCH configuration for the first UL Tx unit and the second PUSCH configuration for the second UL Tx unit based on the information sent (at 307) by base station 304.

[0100] At 910, the apparatus may send, by the first Tx unit, a first PUSCH transmission using the first set of PUSCH transmission parameters to the base station. For example, referring to FIG. 3, using the first PUSCH configuration, UE 302 may send (at 309a) a first PUSCH transmission using the first UL Tx unit.

[0101] At 912, the apparatus sends, by the second Tx unit, a second PUSCH transmission using the second set of PUSCH transmission parameters to the base station. For example, referring to FIG. 3, a second PUSCH transmission may be sent (at 309b) by the second UL Tx unit based on the second PUSCH configuration.

[0102] FIG. 10 is a flowchart of a second exemplary method 1000 of wireless communication, according to some embodiments of the present disclosure. Method 1000 may be performed by an apparatus for wireless communication, e.g., such as access node 104, base station 304, just to name a few. Method 1000 may include operations 1002-1006 as described below. It is to be appreciated that some of the operations may be optional, and some of the operations may be performed simultaneously, or in a different order than shown in FIG. 10.

[0103] Referring to FIG. 10, at 1002, the apparatus may receive, by a communication interface, a first capability report that indicates a first UL Tx configuration associated with a first Tx unit of a UE and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit of the UE. For example, referring to FIG. 3, UE 302 may send (at 303) the first UE capability report and the second UE capability report (either individually or in the same transmission) to base station 304.

[0104] At 1004, the apparatus may select/assign, by at least one processor, a first PUSCH configuration for the first Tx unit based on the first capability report and a second PUSCH configuration associated with the second Tx unit based on the second capability report. For example, referring to FIG. 3, based on the first UE capability report and the second UE capability report, base station 304 may select (at 305) a first PUSCH configuration for the first UL Tx unit and a second PUSCH configuration for the second UL Tx unit, respectively. The first PUSCH configuration may be associated with a first set of PUSCH configuration parameters, and the second PUSCH configuration may be associated with a second set of PUSCH configuration parameters. For instance, the set of PUSCH configuration parameters may include, e.g., a higher layer parameter to configure the codebook subset, a maximum transmit power, a maximum number of layers for use in a PUSCH transmission, a PUSCH scramble identifier for PUSCH, a codebook or non-codebook Tx configuration, a DM-RS type, a PUSCH power control parameter, a configuration of PUSCH frequency hopping, the type of PUSCH resource allocation (e.g., dynamic, semi-persistent, or static), a PUSCH aggregation factor, an MCS table configuration, an indication as to whether the transformPrecoder is enabled or disabled, the RBG size, and/or a PUSCH time-domain allocation-list, just to name a few.

[0105] At 1006, the apparatus may send, by the communication interface, a first indication of the first PUSCH configuration assigned to the first Tx unit and a second indication of the second PUSCH configuration assigned to the second Tx unit. For example, referring to FIG. 3, the first PUSCH configuration for the first UL Tx unit and the second PUSCH configuration for the second UL Tx unit may be sent (at 307) to UE 302.

[0106] FIG. 11 is a flowchart of a third exemplary method 1100 of wireless communication, according to some embodiments of the present disclosure. Method 1100 may be performed by an apparatus for wireless communication, e.g., such as UE 102, 402, just to name a few. Method 1100 may include operations 1102-1108, as described below. It is to be appreciated that some of the operations may be optional, and some of the operations may be performed simultaneously, or in a different order than shown in FIG. 11.

[0107] Referring to FIG. 11, at 1102, the apparatus may receive, by a communication interface, a list of channel measurement resources for measurement by the UE from a base station, the channel measurement resources including one or more of CSI-RS resources or SS/PBCH resources. For example, referring to FIG. 4, base station 404 may send (at 401) a list of CSI-RS or SS/PBCH resources for measurement to UE 402.

[0108] At 1104, the apparatus may measure, by at least one processor, each of the channel measurement resources in the list. For example, referring to FIG. 4, UE 402 may measure (at 403) each of the CSI-RS or SS/PBCH resources in the list.

[0109] At 1106, the apparatus may generate, by the at least one processor, a CRI or an SSBRI for each of the channel measurement resources. For example, referring to FIG. 4, for each of the measurement CSI-RS or SS/PBCH resources, UE 402 may generate (at 405) a CRI or SSBRI, depending on whether CSI-RS or SS/PBCH resources are measured.

[0110] At 1108, the apparatus may send, by the communication interface, a report that includes the CRI or the SSBRI for each of the channel measurement resources to the base station. For example, referring to FIG. 4, UE 402 may report/send (at 407) the CRI or SSBRI for each of the measured resources to base station 404. Along with each CRI/SSBRI, UE 402 may report a corresponding an Ll-RSRP measurement, an L I -SINR measurement, an indictor to indicate the value of the first index that corresponds to a PUSCH configuration from a set of PUSCH configurations, an indicator of one of the SRS resource set for PUSCH transmission, an indicator of a maximum number of SRS antenna ports, an indicator of a maximum number uplink MEMO layers, an indicator of a maximum UL MEMO rank, an indicator of the coherence of antennas, an indicator of a codebook subset, and/or an indicator that indicates maximum Tx power, just to name a few. This information may be reported via a MAC CE or uplink control information (UCI), for example. In some embodiments, base station 404 may send an acknowledgment (or negative acknowledgment) in response to the CRESSBRI(s) report.

[oni] FIG. 12 is a flowchart of a fourth exemplary method 1200 of wireless communication, according to some embodiments of the present disclosure. Method 1200 may be performed by an apparatus for wireless communication, e.g., such as access node 104, base station 404, just to name a few. Method 1200 may include operations 1202-1208, as described below. It is to be appreciated that some of the operations may be optional, and some of the operations may be performed simultaneously, or in a different order than shown in FIG. 12.

[0112] Referring to FIG. 12, at 1202, the apparatus may send, by a communication interface, a list of CSI-RS or SS/PBCH resources for measurement by a UE. For example, referring to FIG. 4, base station 404 may send (at 401) a list of CSI-RS or SS/PBCH resources for measurement to UE 402.

[0113] At 1204, the apparatus may receive, by the communication interface, a CRI or SSBRI for each of the CSI-RS or SS/PBCH resources in the list from the UE. For example, referring to FIG. 4, UE 402 may report/send (at 407) the CRI or SSBRI for each of the measured resources to base station 404. Along with each CRVSSBRI, UE 402 may report a corresponding an Ll-RSRP measurement, an Ll-SINR measurement, an indicator to indicate the value of the first index that corresponds to a PUSCH configuration from a set of PUSCH configurations, an indicator of one of the SRS resource set for PUSCH transmission, an indicator of a maximum number of SRS antenna ports, an indicator of a maximum number uplink MEMO layers, an indicator of a maximum UL MEMO rank, an indicator of the coherence of antennas, an indicator of a codebook subset, and/or an indicator that indicates maximum Tx power, just to name a few. This information may be reported via a MAC CE or uplink control information (UCI), for example. In some embodiments, base station 404 may send an acknowledgment (or negative acknowledgment) in response to the CRESSBRI(s) report. [0114] At 1206, the apparatus may select, by at least one processor a PUSCH configuration for the UE based on the CRI or the SSBRI for each of the channel measurement resources. For example, referring to FIG. 4, based on the CRI(s)/SSBRI(s), base station 404 may select (at 409) a PUSCH configuration for use by UE 402 in sending PUSCH transmissions.

[0115] At 1208, the apparatus may send, by the communication interface, an indication of the PUSCH configuration to the UE. For example, referring to FIG. 4, the PUSCH configuration may be sent (411) to UE 402.

[0116] FIG. 13 is a flowchart of a fifth exemplary method 1300 of wireless communication, according to some embodiments of the present disclosure. Method 1300 may be performed by an apparatus for wireless communication, e.g., such as UE 102, 502, just to name a few. Method 1300 may include operations 1302-1306 as described below. It is to be appreciated that some of the operations may be optional, and some of the operations may be performed simultaneously, or in a different order than shown in FIG. 13.

[0117] Referring to FIG. 13, at 1302, the apparatus may receive, by a communication interface, an indication of a common TCI state for use in PUCCH and PUSCH transmissions from a base station. For example, referring to FIG. 5, base station 504 may use DCI format 1 1 or 1 2 to indicate (at 505) one joint TCI state or one UL TCI state to provide a common UL TCI for PUCCH and PUSCH transmissions. Base station 504 may indicate whether one SRS resource shall follow this DCI-indicated common UL TCI. Each joint TCI state or UL TCI state may be associated with one RS resource that may be used to identify path loss. The RS resource may be an SSB or CSI-RS resource, for example. For SRS transmission, each joint TCI state or UL TCI state may be associated with a set of power control parameters including, e.g., open loop power control parameter P0, alpha, and closed loop index. For an SRS resource that is not configured to follow the DCI-indicated common UL TCI, base station 504 provides (at 505) a joint TCI state or UL TCI state to provide reference information for the UL Tx spatial filter.

[0118] At 1304, the apparatus may identify, by at least one processor, an UL transmit spatial filter for an SRS based on an RS associated with the common TCI state for use in the PUCCH or PUSCH transmissions. For example, referring to FIG. 5, UE 502 may identify (at 507) the UL Tx spatial filter for the SRS based on the common TCI state indication.

[0119] At 1306, the apparatus may send, by the communication interface, an SRS using the UL transmit spatial filter identified from the RS to the base station. For example, referring to FIG. 5, the SRS may be transmitted (at 511) in response to an SRS request sent (at 509) by base station 504.

[0120] FIG. 14 is a flowchart of a sixth exemplary method 1400 of wireless communication, according to some embodiments of the present disclosure. Method 1400 may be performed by an apparatus for wireless communication, e.g., such as UE 102, 602, just to name a few. Method 1400 may include operations 1402-1406 as described below. It is to be appreciated that some of the operations may be optional, and some of the operations may be performed simultaneously, or in a different order than shown in FIG. 14.

[0121] Referring to FIG. 14, at 1402, the apparatus may receive, by a communication interface, a MAC CE that includes a TCI ID field associated with a set of SRS resources located in a plurality of CCs and BWPs. For example, referring to FIG. 6, base station 604 may use the MAC CE sent (at 601) to indicate the TCI state for SRS resource in a set of CCs/BWPs. The applicable list of CCs can be indicated by higher layer parameters. In the MAC CE, base station 604 may indicate one joint TCI state or one UL TCI state. The indicated TCI state may be applied for the SRS resource with the same SRS resource ID for all the BWPs in the indicated CCs. Base station 604 may indicate one or more of, e.g., one SRS resource ID, one TCI state for the SRS resource ID, and one indicator to indicate the type of the indicated TCI state: joint TCI state or UL TCI state, one joint TCI state, and/or one UL TCI state, just to name a few. An example of such a MAC CE is depicted in FIG.

[0122] At 1404, the apparatus may identify, by at least one processor, whether a TCI state associated with the set of SRS resources is a joint TCI state or a UL TCI state based on the TCI state identification field. For example, referring to FIG. 6, UE 602 may identify (at 603) the UL Tx spatial filter for transmitting SRS based on the RS corresponding to the TCI state indicated in the TCI state field of the MAC CE.

[0123] At 1406, the apparatus may transmit, by the communication interface, an SRS using the plurality of CCs and BWPs using a UL transmit spatial filter assigned to an UL transmission by an RS. For example, referring to FIG. 6, UE 602 may transmit (at 605) an SRS using the allocated SRS resource with the UL Tx spatial filter that is determined according to the RS resource provided in indicated joint TCI state or UL TCI state.

[0124] According to some embodiments of the present disclosure, a UE may be provided with two SRS resource set for codebook-based PUSCH transmission, e.g., namely, a first SRS resource set and a second SRS resource set. In each of these two SRS resource sets, the UE may be provided with one or more SRS resources. For the SRS resources in different sets, the UE may be provided with the same or different numbers of antenna ports. The UE may also be provided with an association between each SRS resource set and one or more uplink transmission configurations. For example, each SRS resource set may be associated with a type of codebook subset. Each SRS resource set may be associated with a configuration of maximal uplink transmission power. Each SRS resource set may be associated with a configuration of full power transmission mode. For example, each SRS resource set may be associated with maximal rank for PUSCH transmission.

[0125] The UE may be provided with one or more sets of uplink PUSCH transmission configurations, and in each set of configuration, the UE may be provided with one or more of the following parameters: 1) first index to indicate the PUSCH transmission configuration, 2) higher layer parameter to configure the codebook subset, 3) maximum transmit power, 4) number of layers in PUSCH transmission (e.g., maximum rank), 5) scramble identity for PUSCH, 6) codebook or non-codebook Tx configuration, 7) the DM-RS type, 8) PUSCH power control parameter, 9) PUSCH frequency hopping configuration, 10) the type of PUSCH resource allocation, 11) the PUSCH aggregation factor, 12) MCS table configuration, 13) an indication whether transformPrecoder is enabled or disabled, 14) RBG size, and/or 15) PUSCH time domain allocation list, just to name a few. Each SRS resource set may be associated with one of the above configured set of PUSCH transmission configurations. In one example, a value of the first index may be included in the configuration of SRS resource set to indicate the association between the SRS resource set and the set of PUSCH transmission configuration. If a first index is selected or indicated, then the corresponding set of PUSCH transmission configurations and the corresponding SRS resource set for PUSCH transmission will be applied to scheduled PUSCH transmission.

[0126] According to some embodiments, the SRS resources in one same SRS resource set may apply the same uplink power control parameters and same path loss RS so that the same Tx power may be applied on those SRS resources, e.g., to support beam sweeping operation. To that end, various techniques may be applied. For example, the base station may specify that the joint TCI states or UL TCI states configured to SRS resource in one same SRS resource set may be associated with the same uplink power control parameters P0, alpha, and closed loop index and also the same path loss RS. In other words, the UE may expect that the TCI states configured to SRS resources in one SRS resource set are associated with the same P0, alpha, and closed loop index and the same path loss RS. Additionally and/or alternatively, for an SRS resource not configured to follow the DCI-indicated TCI state, the SRS resource may follow the power control parameters and path loss RS configured to the SRS resource set which contains this SRS resource. In one example, the system may not configure joint TCI state or UL TCI state to SRS resource for positioning. In another example, the system may configure joint TCI state or UL TCI state to an SRS resource for positioning.

[0127] In some embodiments, the base station may use one MAC CE to activate the transmission of semi-persistent SRS. In the MAC CE, the system may provide a joint TCI state or UL TCI state for one activated SRS resource. Here, the UE may transmit the SRS resource with a uplink transmission spatial filter, which is determined according to the RS resource provided in indicated joint TCI state or UL TCI state. In the MAC CE command, the base station provides one or more of the following parameters: 1) an SRS resource set ID that is activated for transmission, 2) for each SRS resource contained in the activated SRS resource set, the base station may provide a TCI state ID, and the base station may also provide one indicator to indicate the type of indicated TCI state: whether indicated TCI state is a joint TCI state or a UL TCI state.

[0128] According to one aspect of the present disclosure, a method of wireless communication of a UE is provided. The method may include generating, by at least one processor, a first capability report that indicates a first UL Tx configuration associated with a first Tx unit and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit, the second Tx unit being different than the first Tx unit. The method may include sending, by a communication interface, the first capability report that indicates the first UL Tx configuration associated with the first Tx unit and the second capability report that indicates the second UL Tx configuration associated with the second Tx unit to a base station.

[0129] In some embodiments, the first UL Tx configuration may include one or more of a first maximum Tx power associated with the first Tx unit, a first maximum number of PUSCH transmission layers associated with the first Tx unit, a first maximum number of antenna ports associated with the first Tx unit, a first codebook-type configuration associated with the first Tx unit, or a first antenna coherence-type associated with the first Tx unit. In some embodiments, the second capability report may include information associated with one or more of a second maximum Tx power associated with the second Tx unit, a second maximum number of PUSCH transmission layers associated with the second Tx unit, a second maximum number of antenna ports associated with the second Tx unit, a second codebook-type configuration associated with the second Tx unit, or a second antenna coherence-type associated with the second Tx unit.

[0130] In some embodiments, the method may include receiving, by the communication interface, a first PUSCH configuration associated with the first Tx unit and a second PUSCH configuration associated with the second Tx unit from the base station. In some embodiments, the method may include identifying, by the at least one processor, a first set of PUSCH transmission parameters for the first Tx unit based on the first PUSCH configuration and a second set of PUSCH transmission parameters for the second Tx unit based on the second PUSCH configuration. In some embodiments, the method may include sending, by the first Tx unit, a first PUSCH transmission using the first set of PUSCH transmission parameters to the base station. In some embodiments, the method may include sending, by the second Tx unit, a second PUSCH transmission using the second set of PUSCH transmission parameters to the base station.

[0131] In some embodiments, the first PUSCH configuration and the second PUSCH configuration are received via one of a MAC CE, RRC signaling, or DCI.

[0132] In some embodiments, the first set of PUSCH transmission parameters may include one or more of a first higher layer parameter to configure a first codebook subset for the first Tx unit, a first number of PUSCH layers associated with the first PUSCH transmission, a maximum Tx power for the first Tx unit, a first scramble identifier for the first PUSCH transmission, a first codebook or non-codebook Tx configuration, a first DM-RS-type, a first PUSCH power control parameter, a first PUSCH frequency hopping configuration, a first-type of PUSCH resource allocation, a first PUSCH aggregation factor, a first MCS table configuration, a first indication of an enabled or disabled transformPrecoder, a size of an RBG associated with the first PUSCH transmission, or a first PUSCH time-domain allocation list. In some embodiments, the second set of PUSCH transmission parameters may include one or more of a second higher layer parameter to configure a second codebook subset for the second Tx unit, a second number of PUSCH layers associated with the second PUSCH transmission, a maximum Tx power for the second Tx unit, a second scramble identifier for the second PUSCH transmission, a second codebook or noncodebook Tx configuration, a second DM-RS-type, a second PUSCH power control parameter, a second PUSCH frequency hopping configuration, a second-type of PUSCH resource allocation, a second PUSCH aggregation factor, a second MCS table configuration, a second indication of an enabled or disabled transformPrecoder, a size of an RBG associated with the second PUSCH transmission, or a second PUSCH time-domain allocation list.

[0133] In some embodiments, the first PUSCH configuration may be associated with a first RS resource set. In some embodiments, the second PUSCH configuration may be associated with a second RS resource set. [0134] In some embodiments, the first PUSCH configuration may be associated with a first TCI. In some embodiments, the second PUSCH configuration may be associated with a second TCI.

[0135] In some embodiments, the method may include performing, by the at least one processor, a first channel measurement using the first RS resource set. In some embodiments, the method may include generating, by the at least one processor, a first CRI or a first SSBRI based on the first channel measurement. In some embodiments, the method may include performing, by the at least one processor, a second channel measurement using the second RS resource set. In some embodiments, the method may include generating, by the at least one processor, a second CRI or a second SSBRI based on the second channel measurement. In some embodiments, the method may include sending, by the communication interface, the first CRI or the first SSBRI to the base station. In some embodiments, the method may include sending, by the communication interface, the second CRI or the second SSBRI to the base station.

[0136] In some embodiments, the method may include receiving, by the communication interface, a first acknowledgment that the first CRI or the first SSBRI was received by the base station. In some embodiments, the method may include receiving, by the communication interface, a second acknowledgment that the second CRI or the second SSBRI was received by the base station.

[0137] In some embodiments, the first capability report may further indicate a first maximum number of SRS resource sets supported by the first Tx unit. In some embodiments, the second capability report may further indicate a second maximum number of SRS resource sets supported by the second Tx unit.

[0138] According to another aspect of the present disclosure, a method of wireless communication of a base station is provided. The method may include receiving, by a communication interface, a first capability report that indicates a first UL Tx configuration associated with a first Tx unit of a UE and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit of the UE. The method may include assigning, by at least one processor, a first PUSCH configuration for the first Tx unit based on the first capability report and a second PUSCH configuration associated with the second Tx unit based on the second capability report. The method may include sending, by the communication interface, a first indication of the first PUSCH configuration assigned to the first Tx unit and a second indication of the second PUSCH configuration assigned to the second Tx unit. [0139] According to still another aspect of the present disclosure, an apparatus for wireless communication of a UE is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform generating, by at least one processor, a first capability report that indicates a first UL Tx configuration associated with a first Tx unit and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit, the second Tx unit being different than the first Tx unit. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending, by a communication interface, the first capability report that indicates the first UL Tx configuration associated with the first Tx unit and the second capability report that indicates the second UL Tx configuration associated with the second Tx unit to a base station.

[0140] In some embodiments, the first UL Tx configuration may include one or more of a first maximum Tx power associated with the first Tx unit, a first maximum number of PUSCH transmission layers associated with the first Tx unit, a first maximum number of antenna ports associated with the first Tx unit, a first codebook-type configuration associated with the first Tx unit, or a first antenna coherence-type associated with the first Tx unit. In some embodiments, the second capability report may include information associated with one or more of a second maximum Tx power associated with the second Tx unit, a second maximum number of PUSCH transmission layers associated with the second Tx unit, a second maximum number of antenna ports associated with the second Tx unit, a second codebook-type configuration associated with the second Tx unit, or a second antenna coherence-type associated with the second Tx unit.

[0141] In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving a first PUSCH configuration associated with the first Tx unit and a second PUSCH configuration associated with the second Tx unit from the base station. In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform identifying, by the at least one processor, a first set of PUSCH transmission parameters for the first Tx unit based on the first PUSCH configuration and a second set of PUSCH transmission parameters for the second Tx unit based on the second PUSCH configuration. In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending, by the first Tx unit, a first PUSCH transmission using the first set of PUSCH transmission parameters to the base station. In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending, by the second Tx unit, a second PUSCH transmission using the second set of PUSCH transmission parameters to the base station.

[0142] In some embodiments, the first PUSCH configuration and the second PUSCH configuration may be received via one of a MAC CE, RRC signaling, or DCI.

[0143] In some embodiments, the first set of PUSCH transmission parameters may include one or more of a first higher layer parameter to configure a first codebook subset for the first Tx unit, a first number of PUSCH layers associated with the first PUSCH transmission, a maximum Tx power for the first Tx unit, a first scramble identifier for the first PUSCH transmission, a first codebook or non-codebook Tx configuration, a first DM-RS-type, a first PUSCH power control parameter, a first PUSCH frequency hopping configuration, a first-type of PUSCH resource allocation, a first PUSCH aggregation factor, a first MCS table configuration, a first indication of an enabled or disabled transformPrecoder, a size of an RBG associated with the first PUSCH transmission, or a first PUSCH time-domain allocation list. In some embodiments, the second set of PUSCH transmission parameters may include one or more of a second higher layer parameter to configure a second codebook subset for the second Tx unit, a second number of PUSCH layers associated with the second PUSCH transmission, a maximum Tx power for the second Tx unit, a second scramble identifier for the second PUSCH transmission, a second codebook or noncodebook Tx configuration, a second DM-RS-type, a second PUSCH power control parameter, a second PUSCH frequency hopping configuration, a second-type of PUSCH resource allocation, a second PUSCH aggregation factor, a second MCS table configuration, a second indication of an enabled or disabled transformPrecoder, a size of an RBG associated with the second PUSCH transmission, or a second PUSCH time-domain allocation list.

[0144] In some embodiments, the first PUSCH configuration may be associated with a first SRS resource set. In some embodiments, the second PUSCH configuration may be associated with a second SRS resource set.

[0145] In some embodiments, the first PUSCH configuration may be associated with a first TCI. In some embodiments, the second PUSCH configuration may be associated with a second TCI.

[0146] In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform performing, by the at least one processor, a first channel measurement using the first SRS resource set. In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform generating, by the at least one processor, a first CRI or a first SSBRI based on the first channel measurement. In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform performing, by the at least one processor, a second channel measurement using the second SRS resource set. In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform generating, by the at least one processor, a second CRI or a second SSBRI based on the second channel measurement. In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending, by the first Tx unit, the first CRI or the first SSBRI to the base station. In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform transmitting, by the second Tx unit, the second CRI or the second SSBRI to the base station.

[0147] In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving, by the communication interface, a first acknowledgement that the first CRI or the first SSBRI was received by the base station. In some embodiments, the apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving, by the communication interface, a second acknowledgment that the second CRI or the second SSBRI was received by the base station.

[0148] According to yet another aspect of the present disclosure, a method of wireless communication of a UE is provided. The method may include receiving, by a communication interface, a list of channel measurement resources for measurement by the UE from a base station, the channel measurement resources including one or more of CSI-RS resources or SS/PBCH resources. The method may include measuring, by at least one processor, each of the channel measurement resources in the list. The method may include generating, by the at least one processor, a CRI or an SSBRI for each of the channel measurement resources. The method may include sending, by the communication interface, a report that includes the CRI or the SSBRI for each of the channel measurement resources to the base station.

[0149] According to a further aspect of the present disclosure, an apparatus for wireless communication of a UE is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving a list of channel measurement resources for measurement by the UE from a base station, the channel measurement resources including one or more of CSI-RS resources or SS/PBCH resources. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform measuring each of the channel measurement resources in the list. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform generating a CRI or an SSBRI for each of the channel measurement resources. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending a report that includes the CRI or the SSBRI for each of the channel measurement resources to the base station.

[0150] According to another aspect of the present disclosure a method of wireless communication of a base station is provided. The method may include sending, by a communication interface, a list of channel measurement resources for measurement by a user equipment (UE), the channel measurement resources including one or more of CSI-RS resources or SS/PBCH resources to a user equipment. The method of receiving, by the communication interface, a CRI or an SSBRI for each of the channel measurement resources in the list from the UE. The method may include selecting, by at least one processor, a PUSCH configuration for the UE based on the CRI or the SSBRI for each of the channel measurement resources. The method may include sending, by the communication interface, an indication of the PUSCH configuration to the UE.

[0151] According to still a further aspect of the present disclosure, an apparatus for wireless communication of a base station is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending a list of channel measurement resources for measurement by a UE, the channel measurement resources including one or more of CSI-RS resources or SS/PBCH resources to a user equipment. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving a CRI or an SSBRI for each of the channel measurement resources in the list from the UE. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform selecting a PUSCH configuration for the UE based on the CRI or the SSBRI for each of the channel measurement resources. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending an indication of the PUSCH configuration to the UE.

[0152] According to yet another aspect of the present disclosure, a method of wireless communication of a UE is provided. The method may include receiving, by a communication interface, an indication of a common TCI state for use in PUCCH and PUSCH transmissions to a base station. The method may include identifying, by at least one processor, a UL Tx spatial filter for an SRS based on an RS associated with the common TCI state for use in the PUCCH or PUSCH transmissions. The method may include sending, by the communication interface, the SRS using the UL transmit spatial filter identified from the RS associated with the common TCI state to the base station.

[0153] In some embodiments, the RS used to identify the UL Tx spatial filter of the SRS is a CSI-RS with a QCL-type set to TypeD when the TCI states are joint TCI states.

[0154] In some embodiments, the method may include receiving, by the communication interface, an indication to transmit an SRS using periodic SRS resources, semi-persistent SRS resources, or aperiodic SRS resources. In some embodiments, the method may include transmitting, by the communication interface, the SRS using the period SRS resources, the semi- persistent SRS resources, or the aperiodic SRS resources. In some embodiments, the indication to transmit the SRS may include an SRS TCI state. In some embodiments, the indication of the common TCI state is received via DCI. In some embodiments, the indication to transmit an SRS may be unassociated with the DCI.

[0155] In some embodiments, when the SRS is transmitted using the periodic SRS resources, the transmitting, by the communication interface, the SRS using the periodic SRS resources may include transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state.

[0156] In some embodiments, when the SRS is transmitted using the semi-persistent SRS resources, the transmitting, by the communication interface, the SRS using the semi-persistent SRS resources may include transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state when the semi-persistent resources are activated via a MAC CE.

[0157] In some embodiments, when the SRS is transmitted using the semi-persistent SRS resources, the transmitting, by the communication interface, the SRS using the aperiodic SRS resources may include transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state when the aperiodic SRS resources are updated via a MAC CE.

[0158] According to a further aspect of the present disclosure, an apparatus for wireless communication of a UE is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving an indication of a common TCI state for use in PUCCH and PUSCH transmissions a base station. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform identifying a UL Tx spatial filter for an SRS based on an RS associated the common TCI state for use in the PUCCH or PUSCH transmissions. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform sending the SRS using the UL transmit spatial filter identified from the RS associated with the common TCI state to the base station.

[0159] In some embodiments, the RS used to identify the UL transmit spatial filter of the SRS may be a CSI-RS with a QCL-type set to TypeD when the TCI states are joint TCI states.

[0160] In some embodiments, the memory storing instructions, which when executed by the at least one processor, further cause the at least one processor to perform receiving an indication to transmit an SRS using periodic SRS resources, semi-persistent SRS resources, or aperiodic SRS resources. In some embodiments, the memory storing instructions, which when executed by the at least one processor, further cause the at least one processor to perform transmitting the SRS using the period SRS resources, the semi-persistent SRS resources, or the aperiodic SRS resources. In some embodiments, the indication to transmit the SRS may include an SRS TCI state. In some embodiments, the indication of the common TCI state may be received via DCI. In some embodiments, the indication to transmit an SRS may be unassociated with the DCI.

[0161] In some embodiments, when the SRS is transmitted using the periodic SRS resources, the memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform transmitting, by the communication interface, the SRS using the periodic SRS resources by transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state.

[0162] In some embodiments, when the SRS is transmitted using the semi-persistent SRS resources, the memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform transmitting, by the communication interface, the SRS using the semi-persistent SRS resources by transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state when the semi-persistent resources are activated via a MAC CE.

[0163] In some embodiments, when the SRS is transmitted using the semi-persistent SRS resources, the memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform transmitting, by the communication interface, the SRS using the aperiodic SRS resources by transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state when the aperiodic SRS resources are updated via a MAC CE.

[0164] According to still a further aspect of the present disclosure, a method of wireless communication of UE is provided. The method may include receiving, by a communication interface, a MAC CE that includes a TCI state ID field associated with a set of SRS resources located in a plurality of CCs and BWPs. The method may include identifying, by at least one processor, whether a TCI state associated with the set of SRS resources is a joint TCI state or a UL TCI state based on the TCI state identification field. The method may include transmitting, by the communication interface, an SRS using the plurality of CCs and BWPs using a UL transmit spatial filter assigned to a UL transmission by an RS.

[0165] According to yet another aspect of the present disclosure, an apparatus for wireless communication of a UE is provided. The apparatus may include at least one processor. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform receiving a MAC CE that includes a TCI state ID field associated with a set of SRS resources located in a plurality of CCs and BWPs. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform identifying whether a TCI state associated with the set of SRS resources is a joint TCI state or a UL TCI state based on the TCI state identification field. The apparatus may include memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform transmitting an SRS using the plurality of CCs and BWPs using a UL transmit spatial filter assigned to a UL transmission by an RS.

[0166] The foregoing description of the specific embodiments will so reveal the general nature of the present disclosure that others may, by applying knowledge within the skill of the art, readily modify and/or adapt for various applications such specific embodiments, without undue experimentation, without departing from the general concept of the present disclosure. Therefore, such adaptations and modifications are intended to be within the meaning and range of equivalents of the disclosed embodiments, based on the teaching and guidance presented herein. It is to be understood that the phraseology or terminology herein is for the purpose of description and not of limitation, such that the terminology or phraseology of the present specification is to be interpreted by the skilled artisan in light of the teachings and guidance.

[0167] Embodiments of the present disclosure have been described above with the aid of functional building blocks illustrating the implementation of specified functions and relationships thereof. The boundaries of these functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternate boundaries may be defined so long as the specified functions and relationships thereof are appropriately performed.

[0168] The Summary and Abstract sections may set forth one or more but not all exemplary embodiments of the present disclosure as contemplated by the inventor(s), and thus, are not intended to limit the present disclosure and the appended claims in any way.

[0169] Various functional blocks, modules, and steps are disclosed above. The particular arrangements provided are illustrative and without limitation. Accordingly, the functional blocks, modules, and steps may be re-ordered or combined in different ways than in the examples provided above. Likewise, certain embodiments include only a subset of the functional blocks, modules, and steps, and any such subset is permitted.

[0170] The breadth and scope of the present disclosure should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.

Claims

WHAT IS CLAIMED IS:

1. A method of wireless communication of a user equipment (UE), comprising: generating, by at least one processor, a first capability report that indicates a first uplink (UL) transmission (Tx) configuration associated with a first Tx unit and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit, the second Tx unit being different than the first Tx unit; and sending, by a communication interface, the first capability report that indicates the first UL Tx configuration associated with the first Tx unit and the second capability report that indicates the second UL Tx configuration associated with the second Tx unit to a base station.

2. The method of claim 1, wherein: the first UL Tx configuration includes one or more of a first maximum Tx power associated with the first Tx unit, a first maximum number of physical uplink shared channel (PUSCH) transmission layers associated with the first Tx unit, a first maximum number of antenna ports associated with the first Tx unit, a first codebook-type configuration associated with the first Tx unit, or a first antenna coherence-type associated with the first Tx unit, and the second capability report includes information associated with one or more of a second maximum Tx power associated with the second Tx unit, a second maximum number of PUSCH transmission layers associated with the second Tx unit, a second maximum number of antenna ports associated with the second Tx unit, a second codebook-type configuration associated with the second Tx unit, or a second antenna coherence-type associated with the second Tx unit.

3. The method of claim 1, further comprising: receiving, by the communication interface, a first physical uplink shared channel (PUSCH) configuration associated with the first Tx unit and a second PUSCH configuration associated with the second Tx unit from the base station; identifying, by the at least one processor, a first set of PUSCH transmission parameters for the first Tx unit based on the first PUSCH configuration and a second set of PUSCH transmission parameters for the second Tx unit based on the second PUSCH configuration; sending, by the first Tx unit, a first PUSCH transmission using the first set of PUSCH transmission parameters to the base station; and sending, by the second Tx unit, a second PUSCH transmission using the second set of

43 PUSCH transmission parameters to the base station.

4. The method of claim 3, wherein the first PUSCH configuration and the second PUSCH configuration are received via one of a medium access control (MAC) control element (CE) (MAC CE), radio resource control (RRC) signaling, or downlink control information (DCI).

5. The method of claim 3, wherein: the first set of PUSCH transmission parameters includes one or more of a first higher layer parameter to configure a first codebook subset for the first Tx unit, a first number of PUSCH layers associated with the first PUSCH transmission, a maximum Tx power for the first Tx unit, a first scramble identifier for the first PUSCH transmission, a first codebook or non-codebook Tx configuration, a first demodulation reference signal (DM-RS)-type, a first PUSCH power control parameter, a first PUSCH frequency hopping configuration, a first-type of PUSCH resource allocation, a first PUSCH aggregation factor, a first modulation and coding scheme (MCS) table configuration, a first indication of an enabled or disabled transformPrecoder, a size of a resource block group (RBG) associated with the first PUSCH transmission, or a first PUSCH time-domain allocation list, and the second set of PUSCH transmission parameters includes one or more of a second higher layer parameter to configure a second codebook subset for the second Tx unit, a second number of PUSCH layers associated with the second PUSCH transmission, a maximum Tx power for the second Tx unit, a second scramble identifier for the second PUSCH transmission, a second codebook or non-codebook Tx configuration, a second demodulation reference signal (DM-RS)- type, a second PUSCH power control parameter, a second PUSCH frequency hopping configuration, a second-type of PUSCH resource allocation, a second PUSCH aggregation factor, a second MCS table configuration, a second indication of an enabled or disabled transformPrecoder, a size of an RBG associated with the second PUSCH transmission, or a second PUSCH time-domain allocation list.

6. The method of claim 3, wherein: the first PUSCH configuration is associated with a first reference signal (RS) resource set, and the second PUSCH configuration is associated with a second RS resource set.

44

7. The method of claim 3, wherein: the first PUSCH configuration is associated with a first transmission control indication (TCI), and the second PUSCH configuration is associated with a second TCI.

8. The method of claim 6, further comprising: performing, by the at least one processor, a first channel measurement using the first RS resource set; generating, by the at least one processor, a first channel-state information (CSI) reference signal resource indicator (CRI) or a first synchronization signal (SS)/physical broadcast channel (PBCH) block resource indicator (SSBRI) based on the first channel measurement; performing, by the at least one processor, a second channel measurement using the second RS resource set; generating, by the at least one processor, a second CRI or a second SSBRI based on the second channel measurement; sending, by the communication interface, the first CRI or the first SSBRI to the base station; and sending, by the communication interface, the second CRI or the second SSBRI to the base station.

9. The method of claim 8, further comprising: receiving, by the communication interface, a first acknowledgment that the first CRI or the first SSBRI was received by the base station; and receiving, by the communication interface, a second acknowledgment that the second CRI or the second SSBRI was received by the base station.

10. The method of claim 1, wherein: the first capability report further indicates a first maximum number of sound reference signal (SRS) resource sets supported by the first Tx unit, and the second capability report further indicates a second maximum number of SRS resource sets supported by the second Tx unit.

45

11. A method of wireless communication of a base station, comprising: receiving, by a communication interface, a first capability report that indicates a first uplink (UL) transmission (Tx) configuration associated with a first Tx unit of a user equipment (UE) and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit of the UE; assigning, by at least one processor, a first physical uplink shared channel (PUSCH) configuration for the first Tx unit based on the first capability report and a second PUSCH configuration associated with the second Tx unit based on the second capability report; and sending, by the communication interface, a first indication of the first PUSCH configuration assigned to the first Tx unit and a second indication of the second PUSCH configuration assigned to the second Tx unit.

12. An apparatus for wireless communication of a user equipment (UE), comprising: at least one processor; and memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform: generating, by at least one processor, a first capability report that indicates a first uplink (UL) transmission (Tx) configuration associated with a first Tx unit and a second capability report that indicates a second UL Tx configuration associated with a second Tx unit, the second Tx unit being different than the first Tx unit; and sending, by a communication interface, the first capability report that indicates the first UL Tx configuration associated with the first Tx unit and the second capability report that indicates the second UL Tx configuration associated with the second Tx unit to a base station.

13. The apparatus of claim 12, wherein: the first UL Tx configuration includes one or more of a first maximum Tx power associated with the first Tx unit, a first maximum number of physical uplink shared channel (PUSCH) transmission layers associated with the first Tx unit, a first maximum number of antenna ports associated with the first Tx unit, a first codebook-type configuration associated with the first Tx unit, or a first antenna coherence-type associated with the first Tx unit, and the second capability report includes information associated with one or more of a second maximum Tx power associated with the second Tx unit, a second maximum number of PUSCH transmission layers associated with the second Tx unit, a second maximum number of antenna ports associated with the second Tx unit, a second codebook-type configuration associated with the second Tx unit, or a second antenna coherence-type associated with the second Tx unit.

14. The apparatus of claim 12, further comprising: receiving, by the communication interface, a first physical uplink shared channel (PUSCH) configuration associated with the first Tx unit and a second PUSCH configuration associated with the second Tx unit from the base station; identifying, by the at least one processor, a first set of PUSCH transmission parameters for the first Tx unit based on the first PUSCH configuration and a second set of PUSCH transmission parameters for the second Tx unit based on the second PUSCH configuration; sending, by the first Tx unit, a first PUSCH transmission using the first set of PUSCH transmission parameters to the base station; and sending, by the second Tx unit, a second PUSCH transmission using the second set of PUSCH transmission parameters to the base station.

15. The apparatus of claim 14, wherein the first PUSCH configuration and the second PUSCH configuration are received via one of a medium access control (MAC) control element (CE) (MAC CE), radio resource control (RRC) signaling, or downlink control information (DCI).

16. The apparatus of claim 14, wherein: the first set of PUSCH transmission parameters includes one or more of a first higher layer parameter to configure a first codebook subset for the first Tx unit, a first number of PUSCH layers associated with the first PUSCH transmission, a maximum Tx power for the first Tx unit, a first scramble identifier for the first PUSCH transmission, a first codebook or non-codebook Tx configuration, a first demodulation reference signal (DM-RS)-type, a first PUSCH power control parameter, a first PUSCH frequency hopping configuration, a first-type of PUSCH resource allocation, a first PUSCH aggregation factor, a first modulation and coding scheme (MCS) table configuration, a first indication of an enabled or disabled transformPrecoder, a size of a resource block group (RBG) associated with the first PUSCH transmission, or a first PUSCH time-domain allocation list, and the second set of PUSCH transmission parameters includes one or more of a second higher layer parameter to configure a second codebook subset for the second Tx unit, a second number of PUSCH layers associated with the second PUSCH transmission, a maximum Tx power for the second Tx unit, a second scramble identifier for the second PUSCH transmission, a second codebook or non-codebook Tx configuration, a second demodulation reference signal (DM-RS)- type, a second PUSCH power control parameter, a second PUSCH frequency hopping configuration, a second-type of PUSCH resource allocation, a second PUSCH aggregation factor, a second MCS table configuration, a second indication of an enabled or disabled transformPrecoder, a size of an RBG associated with the second PUSCH transmission, or a second PUSCH time-domain allocation list.

17. The apparatus of claim 14, wherein: the first PUSCH configuration is associated with a first sounding reference signal (SRS) resource set, and the second PUSCH configuration is associated with a second SRS resource set.

18. The apparatus of claim 14, wherein: the first PUSCH configuration is associated with a first transmission control indication (TCI), and the second PUSCH configuration is associated with a second TCI.

19. The apparatus of claim 17, further comprising: performing, by the at least one processor, a first channel measurement using the first SRS resource set; generating, by the at least one processor, a first channel-state information (CSI) reference signal resource indicator (CRI) or a first synchronization signal (SS)/physical broadcast channel (PBCH) block resource indicator (SSBRI) based on the first channel measurement; performing, by the at least one processor, a second channel measurement using the second SRS resource set; generating, by the at least one processor, a second CRI or a second SSBRI based on the second channel measurement;

48 sending, by the first Tx unit, the first CRI or the first SSBRI to the base station; and sending, by the second Tx unit, the second CRI or the second SSBRI to the base station.

20. The apparatus of claim 19, further comprising: receiving, by the communication interface, a first acknowledgment that the first CRI or the first SSBRI was received by the base station; and receiving, by the communication interface, a second acknowledgment that the second CRI or the second SSBRI was received by the base station.

21. A method of wireless communication of a user equipment (UE), comprising: receiving, by a communication interface, a list of channel measurement resources for measurement by the UE from a base station, the channel measurement resources including one or more of channel-state information (CSI)-reference signal (RS) (CSI-RS) resources or synchronization signal (SS)/physical broadcast channel (PBCH) (SS/PBCH) resources; measuring, by at least one processor, each of the channel measurement resources in the list; generating, by the at least one processor, a channel-state information (CSI) reference signal resource indicator (CRI) or a synchronization signal block resource indicator (SSBRI) for each of the channel measurement resources; and sending, by the communication interface, a report that includes the CRI or the SSBRI for each of the channel measurement resources to the base station.

22. An apparatus for wireless communication of a user equipment (UE), comprising: at least one processor; and memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform: receiving a list of channel measurement resources for measurement by the UE from a base station, the channel measurement resources including one or more of channel-state information (CSI)-reference signal (RS) (CSI-RS) resources or synchronization signal (SS)/physical broadcast channel (PBCH) (SS/PBCH) resources; measuring each of the channel measurement resources in the list; generating a channel-state information (CSI) reference signal resource indicator

(CRI) or a synchronization signal block resource indicator (SSBRI) for each of the channel

49 measurement resources; and sending a report that includes the CRI or the SSBRI for each of the channel measurement resources to the base station.

23. A method of wireless communication of a base station, comprising: sending, by a communication interface, a list of channel measurement resources for measurement by a user equipment (UE), the channel measurement resources including one or more of channel-state information (CSI)-reference signal (RS) (CSI-RS) resources or synchronization signal (SS)/physical broadcast channel (PBCH) (SS/PBCH) resources to a user equipment; receiving, by the communication interface, a channel-state information (CSI) reference signal resource indicator (CRI) or a synchronization signal block resource indicator (SSBRI) for each of the channel measurement resources in the list from the UE; selecting, by at least one processor, a physical uplink shared channel (PUSCH) configuration for the UE based on the CRI or the SSBRI for each of the channel measurement resources; and sending, by the communication interface, an indication of the PUSCH configuration to the UE.

24. An apparatus for wireless communication of a base station, comprising: at least one processor; and memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform: sending a list of channel measurement resources for measurement by a user equipment (UE), the channel measurement resources including one or more of channelstate information (CSI)-reference signal (RS) (CSI-RS) resources or synchronization signal (SS)/physical broadcast channel (PBCH) (SS/PBCH) resources to a user equipment; receiving a channel-state information (CSI) reference signal resource indicator (CRI) or a synchronization signal block resource indicator (SSBRI) for each of the channel measurement resources in the list from the UE; selecting a physical uplink shared channel (PUSCH) configuration for the UE based on the CRI or the SSBRI for each of the channel measurement resources; and sending an indication of the PUSCH configuration to the UE.

50

25. A method of wireless communication of a user equipment (UE), comprising: receiving, by a communication interface, an indication of a common transmission configuration indicator (TCI) state for use in physical uplink control channel (PUCCH) and physical uplink shared channel (PUSCH) transmissions from a base station; identifying, by at least one processor, an uplink (UL) transmit spatial filter for a sounding reference signal (SRS) based on a reference signal (RS) associated with the common TCI state for use in the PUCCH or PUSCH transmissions; and sending, by the communication interface, the SRS using the UL transmit spatial filter identified from the RS associated with the common TCI state to the base station.

26. The method of claim 25, wherein the RS used to identify the UL transmit spatial filter of the SRS is a channel state information (CSI)-RS with a quasi-co-location (QCL)-type set to TypeD when the TCI states are joint TCI states.

27. The method of claim 25, further comprising: receiving, by the communication interface, an indication to transmit a sounding reference signal (SRS) using periodic SRS resources, semi-persistent SRS resources, or aperiodic SRS resources; and transmitting, by the communication interface, the SRS using the period SRS resources, the semi-persistent SRS resources, or the aperiodic SRS resources, wherein the indication to transmit the SRS includes an SRS TCI state, wherein the indication of the common TCI state is received via downlink control information (DCI), the method, and wherein the indication to transmit an SRS is unassociated with the DCI.

28. The method of claim 27, wherein, when the SRS is transmitted using the periodic SRS resources, the transmitting, by the communication interface, the SRS using the periodic SRS resources comprises: transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state.

51

29. The method of claim 27, wherein, when the SRS is transmitted using the semi-persistent SRS resources, the transmitting, by the communication interface, the SRS using the semi-persistent SRS resources comprises: transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state when the semi-persistent resources are activated via a medium access control (MAC) control element (CE).

30. The method of claim 27, wherein, when the SRS is transmitted using the semi-persistent SRS resources, the transmitting, by the communication interface, the SRS using the aperiodic SRS resources comprises: transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state when the aperiodic SRS resources are updated via a medium access control (MAC) control element (CE) (MAC CE).

31. An apparatus for wireless communication of a user equipment (UE), comprising: at least one processor; and memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform: receiving an indication of a common transmission configuration indicator (TCI) state for use in physical uplink control channel (PUCCH) and physical uplink shared channel (PUSCH) transmissions from a base station; identifying an uplink (UL) transmit spatial filter for a sounding reference signal (SRS) based on a reference signal (RS) associated with the common TCI state for use in the PUCCH or PUSCH transmissions; and sending the SRS using the UL transmit spatial filter identified from the RS associated with the common TCI state to the base station.

32. The apparatus of claim 31, wherein the RS used to identify the UL transmit spatial filter of the SRS is a channel state information (CSI)-RS with a quasi-co-location (QCL)-type set to TypeD when the TCI states are joint TCI states.

33. The apparatus of claim 31, wherein, the memory storing instructions, which when executed

52 by the at least one processor, further cause the at least one processor to perform: receiving an indication to transmit a sounding reference signal (SRS) using periodic SRS resources, semi-persistent SRS resources, or aperiodic SRS resources; and transmitting the SRS using the period SRS resources, the semi-persistent SRS resources, or the aperiodic SRS resources, wherein the indication to transmit the SRS includes an SRS TCI state, wherein the indication of the common TCI state is received via downlink control information (DCI), and wherein the indication to transmit an SRS is unassociated with the DCI.

34. The apparatus of claim 33, wherein, when the SRS is transmitted using the periodic SRS resources, the memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform transmitting, by the communication interface, the SRS using the periodic SRS resources by: transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state.

35. The apparatus of claim 33, wherein, when the SRS is transmitted using the semi-persistent SRS resources, the memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform transmitting, by the communication interface, the SRS using the semi-persistent SRS resources by: transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state when the semi-persistent resources are activated via a medium access control (MAC) control element (CE).

36. The apparatus of claim 33, wherein, when the SRS is transmitted using the semi-persistent SRS resources, the memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform transmitting, by the communication interface, the SRS using the aperiodic SRS resources by: transmitting the SRS using the UL transmit spatial filter indicated by the RS for the common TCI state when the aperiodic SRS resources are updated via a medium access control (MAC) control element (CE) (MAC CE).

53

37. A method of wireless communication of a user equipment (UE), comprising: receiving, by a communication interface, a medium access control (MAC) control element (CE) (MAC CE) that includes a transmission configuration identifier (TCI) state identification (ID) field associated with a set of sound reference signal (SRS) resources located in a plurality of component carriers (CCs) and bandwidth parts (BWPs); identifying, by at least one processor, whether a TCI state associated with the set of SRS resources is a joint TCI state or an uplink (UL) TCI state based on the TCI state identification field; and transmitting, by the communication interface, an SRS using the plurality of CCs and BWPs using an uplink (UL) transmit spatial filter assigned to a UL transmission by a reference signal (RS).

38. An apparatus for wireless communication of a user equipment (UE), comprising: at least one processor; and memory storing instructions, which when executed by the at least one processor, cause the at least one processor to perform: receiving a medium access control (MAC) control element (CE) (MAC CE) that includes a transmission configuration identifier (TCI) state identification (ID) field associated with a set of sound reference signal (SRS) resources located in a plurality of component carriers (CCs) and bandwidth parts (BWPs); identifying whether a TCI state associated with the set of SRS resources is a joint TCI state or an uplink (UL) TCI state based on the TCI state identification field; and transmitting an SRS using the plurality of CCs and BWPs using an uplink (UL) transmit spatial filter assigned to a UL transmission by a reference signal (RS).

54