Association of transmission configuration indicator and precoder in uplink transmission

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a precoding matrix. The first TCI may be associated with a first set of antenna indices for the precoding matrix, and the second TCI may be associated with a second set of antenna indices for the precoding matrix. The UE may send an uplink transmission based at least in part on the DCI. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to Patent Cooperation Treaty (PCT) patent application No. PCT / CN2020 / 075470, entitled “ASSOCIATION OF TRANSMISSIONCONFIGURATION INDICATORS AND PRECODERS IN UPLINK TRANSMISSIONS,” filed on February 17, 2020, and assigned to its assignee. The disclosure of the prior application is considered a part of and incorporated by reference into the present patent application. Technical Field

[0003] Aspects of the present disclosure generally relate to wireless communications and techniques and apparatus for associating transmission configuration indicators with precoders. Background Art

[0004] Wireless communication systems are widely used to provide various telecommunication services, such as telephony, video, data, information transmission and reception, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include multiple base stations (BSs) that can support communication for multiple user equipment (UEs). UEs can communicate with a BS via downlinks and uplinks. The downlink (or forward link) refers to the communication link from the BS to the UE, while the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at municipal, national, regional and even global levels. NR, also known as 5G, is a set of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better support mobile broadband Internet access by: improving spectrum efficiency; reducing costs; improving services; utilizing new spectrum; and better integrating with other open standards that use orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL) and support beamforming, multiple-input multiple-output (MIMO) antenna technology and carrier aggregation. However, as the demand for mobile broadband access continues to increase, further improvements to LTE and NR technologies are needed. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that adopt these technologies. Summary of the Invention

[0007] In some aspects, a user equipment (UE) for wireless communication includes a memory and one or more processors coupled to the memory. The memory and the one or more processors may be configured to receive downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a precoding matrix, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix. The memory and the one or more processors may be configured to send an uplink transmission based at least in part on the DCI.

[0008] In some aspects, a base station for wireless communication includes a memory and one or more processors coupled to the memory. The memory and the one or more processors may be configured to send a data communication interface (DCI) indicating a first TCI, a second TCI, and a precoding matrix for a UE, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix. The memory and the one or more processors may be configured to receive an uplink transmission from the UE based at least in part on the DCI.

[0009] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory. The memory and the one or more processors may be configured to receive a data communication (DCI) indicating first and second beams of a first antenna index set and a second antenna index set for identifying sounding reference signal (SRS) antenna ports associated with multiple SRS resources of multiple SRS resource sets. The memory and the one or more processors may be configured to send an uplink transmission based at least in part on the DCI.

[0010] In some aspects, a base station for wireless communication includes a memory and one or more processors coupled to the memory. The memory and the one or more processors may be configured to send a data communication (DCI) to a UE, the DCI indicating first and second beams of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with multiple SRS resources of multiple SRS resource sets. The memory and the one or more processors may be configured to receive an uplink transmission from the UE based at least in part on the DCI.

[0011] In some aspects, a method of wireless communication performed by a UE includes receiving a data communication interface (DCI) indicating a first antenna index (TCI) associated with a first set of antenna indices for the precoding matrix, a second TCI associated with a second set of antenna indices for the precoding matrix, and a precoding matrix. The method may include sending an uplink transmission based at least in part on the DCI.

[0012] In some aspects, a method of wireless communication performed by a base station includes transmitting a data communication interface (DCI) indicating a first TCI, a second TCI, and a precoding matrix for a UE, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix. The method may include receiving an uplink transmission from the UE based at least in part on the DCI.

[0013] In some aspects, a method of wireless communication performed by a UE includes receiving a data communication (DCI) indicating first and second beams of a first set of antenna indices and a second set of antenna indices for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets. The method may include sending an uplink transmission based at least in part on the DCI.

[0014] In some aspects, a method of wireless communication performed by a base station includes transmitting, to a UE, a data communication channel (DCI) indicating first and second beams of a first and second antenna index sets for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets. The method may include receiving an uplink transmission from the UE based at least in part on the DCI.

[0015] In some aspects, an apparatus for wireless communication includes means for receiving a data communication (DCI) indicating a first TCI associated with a first set of antenna indices for the precoding matrix, a second TCI associated with a second set of antenna indices for the precoding matrix, and a precoding matrix. The apparatus may include means for sending an uplink transmission based at least in part on the DCI.

[0016] In some aspects, an apparatus for wireless communication includes means for transmitting a data communication (DCI) indicating a first TCI, a second TCI, and a precoding matrix for a UE, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix. The apparatus may also include means for receiving an uplink transmission from the UE based at least in part on the DCI.

[0017] In some aspects, an apparatus for wireless communication includes means for receiving DCI indicating first and second beams of a first set of antenna indices and a second set of antenna indices identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets. The apparatus may include means for sending an uplink transmission based at least in part on the DCI.

[0018] In some aspects, an apparatus for wireless communication includes means for transmitting, to a UE, DCI indicating first and second beams of a first set of antenna indices and a second set of antenna indices identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets. The apparatus may also include means for receiving an uplink transmission from the UE based at least in part on the DCI.

[0019] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to receive a data communication (DCI) indicating a first TCI, a second TCI, and a precoding matrix, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix. The one or more instructions, when executed by the one or more processors of the UE, cause the UE to send an uplink transmission based at least in part on the DCI.

[0020] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a base station, cause the base station to transmit a data communication (DCI) indicating a first TCI, a second TCI, and a precoding matrix for a UE, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix. The one or more instructions, when executed by the one or more processors of the base station, cause the base station to receive an uplink transmission from the UE based at least in part on the DCI.

[0021] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to receive a data communication (DCI) indicating first and second beams of a first set of antenna indices and a second set of antenna indices for identifying SRS antenna ports associated with multiple SRS resources of multiple SRS resource sets. The one or more instructions, when executed by the one or more processors of the UE, cause the UE to send an uplink transmission based at least in part on the DCI.

[0022] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a base station, cause the base station to send a DCI to a UE, the DCI indicating first and second beams of a first set of antenna indices and a second set of antenna indices for identifying SRS antenna ports associated with multiple SRS resources of multiple SRS resource sets. The one or more instructions, when executed by the one or more processors of the base station, cause the base station to receive an uplink transmission from the UE based at least in part on the DCI.

[0023] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems substantially as described with reference to and as illustrated in the accompanying drawings and description.

[0024] The features and technical advantages of the examples according to the present disclosure have been summarized in a rather broad manner so that the detailed description below may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. These equivalent structures do not depart from the scope of the appended claims. The features of the concepts disclosed herein, their organization and method of operation, and associated advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description and is not intended to be a definition of limitations of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order that the above-described features of the present disclosure may be understood in detail, a more particular description, briefly summarized above, may be obtained by reference to various aspects, some of which are illustrated in the accompanying drawings. It should be noted, however, that the drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0026] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0027] Figure 2 is a diagram illustrating an example of a base station communicating with a UE in a wireless network according to the present disclosure.

[0028] Figure 3A is a diagram illustrating an example of association of a transmission configuration indicator and a precoder in uplink transmission according to the present disclosure.

[0029] Figure 3B is a diagram illustrating an example of multi-panel uplink transmission according to the present disclosure.

[0030] Figures 4A to 4D is a diagram illustrating an example of association of a transmission configuration indicator and a precoder in uplink transmission according to the present disclosure.

[0031] Figure 5 is a diagram illustrating an example of an SRS resource set according to the present disclosure.

[0032] Figure 6 is a diagram illustrating an example of a reference signal in a wireless network according to the present disclosure.

[0033] Figure 7 is a diagram illustrating an example of using a beam for communication between a base station and a UE according to the present disclosure.

[0034] Figure 8is a diagram illustrating one or more examples of a precoder matrix according to the present disclosure.

[0035] Figure 9 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0036] Figure 10 is a diagram illustrating an example process performed, for example, by a base station according to the present disclosure.

[0037] Figure 11 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0038] Figure 12 is a diagram illustrating an example process performed, for example, by a base station according to the present disclosure.

[0039] Figure 13 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0040] Figure 14 is a diagram illustrating an example of a hardware implementation of an apparatus employing a processing system according to the present disclosure.

[0041] Figure 15 is a diagram illustrating an example of an implementation of code and circuitry of an apparatus according to the present disclosure.

[0042] Figure 16 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0043] Figure 17 is a diagram illustrating an example of a hardware implementation of an apparatus employing a processing system according to the present disclosure.

[0044] Figure 18 is a diagram illustrating an example of an implementation of code and circuitry of an apparatus according to the present disclosure. DETAILED DESCRIPTION

[0045] A user equipment (UE) can use beams to send uplink transmissions. The beams can be indicated by a transmission configuration indicator (TCI) in downlink control information (DCI) received by the UE. The UE can use a precoding matrix to generate the beams used to send uplink transmissions. The precoding matrix can be identified by a transmit precoding matrix indicator (TPMI) indicated in the DCI.

[0046] In one or more examples, the DCI may indicate multiple TCIs (i.e., multiple beams) for uplink transmission (e.g., multi-panel uplink transmission) and a single precoding matrix for uplink transmission. However, the association between the precoders of the single precoding matrix and the multiple TCIs may be unknown. For example, it may not be clear which precoders of the single precoding matrix are used to generate a first beam indicated by the multiple TCIs and which precoders of the single precoding matrix are used to generate a second beam indicated by the multiple TCIs.

[0047] Some techniques and apparatus described herein enable a UE to determine the association between multiple TCIs used for uplink transmission and the precoders of a single precoding matrix used for uplink transmission. In some aspects, the UE may receive a DCI indicating first and second TCIs and a single precoding matrix. The single precoding matrix may include precoders for the first and second TCIs. However, the DCI may not identify the precoder for the first TCI and the precoder for the second TCI. In some aspects, the UE may determine that the first TCI is associated with a first set of antenna ports identified by the precoding matrix (e.g., port 0 and port 2) and the second TCI is associated with a second set of antenna ports identified by the precoding matrix (e.g., port 1 and port 3). Thus, the UE may perform multi-panel uplink transmission based at least in part on the association of the TCIs with the antenna port sets. Using a single precoding matrix for multiple TCIs improves signaling overhead and saves network resources. In addition, the precoding matrix can be used to implicitly indicate the type of uplink transmission (e.g., dynamic panel selection transmission, non-coherent joint transmission, or joint transmission), which further improves signaling overhead and saves network resources.

[0048] The various aspects of the present disclosure will be described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be construed as being limited to any specific structure or function presented in the present disclosure. On the contrary, these aspects are provided so that the present disclosure will be thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently of any other aspect of the present disclosure or combined with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods that are practiced using other structures, functions, or structures and functions in addition to or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.

[0049] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0050] It should be noted that while various aspects may be described herein using terminology generally associated with 5G or NR radio access technologies (RATs), various aspects of the present disclosure may be applicable to other RATs, such as 3G RATs, 4G RATs, and / or RATs beyond 5G (e.g., 6G).

[0051] Figure 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network, etc. The wireless network 100 may include multiple base stations 110 (shown as BS110a, BS110b, BS110c, and BS110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NRBS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS can provide communication coverage for a specific geographic area. In 3GPP, the term "cell" can refer to the coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0052] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1In the example shown, BS 110a may be a macro BS for macrocell 102a, BS 110b may be a pico BS for picocell 102b, and BS 110c may be a femto BS for femtocell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0053] In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some examples, the BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in wireless network 100 through various types of backhaul interfaces (such as direct physical connections or virtual networks) using any suitable transport network.

[0054] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or a UE) and send transmissions of data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions of other UEs. Figure 1 In the example shown, relay BS 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS may also be referred to as a relay station, relay base station, relay, etc.

[0055] The wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0056] A network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0057] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0058] Some UEs may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to or to a network (e.g., a wide area network such as the Internet or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included in a housing that houses components of UE 120 (such as a processor component and / or a memory component). In some aspects, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0059] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. A RAT may also be referred to as a radio technology, air interface, etc. A frequency may also be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0060] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly (e.g., without using base station 110 as an intermediary for communicating with each other) using one or more sidelink channels. For example, UE 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols), and / or mesh networks. In some aspects, UE 120 can perform scheduling operations, resource selection operations, and / or other operations performed by base station 110 as described elsewhere herein.

[0061] The devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various categories, frequency bands, channels, etc. based on frequency or wavelength. For example, the devices of the wireless network 100 can communicate using an operating band having a first frequency range (FR1), and / or can communicate using an operating band having a second frequency range (FR2), the first frequency range being from 410 MHz to 7.125 GHz and the second frequency range being from 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a "sub-6 GHz" band. Similarly, FR2 is often referred to as a "millimeter wave" band, although different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU). Thus, unless otherwise specifically stated, it should be understood that the terms "sub-6 GHz," etc., if used herein, can broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise specifically stated, it should be understood that the terms "millimeter wave," etc., if used herein, can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 can be modified, and that the techniques described herein are applicable to those modified frequency ranges.

[0062] like Figure 1As shown, UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may: receive a DCI indicating a first TCI, a second TCI, and a precoding matrix, the first TCI being associated with a first antenna index set of the precoding matrix and the second TCI being associated with a second antenna index set of the precoding matrix; receive a DCI indicating a first beam and a second beam of a first antenna index set and a second antenna index set for identifying a sounding reference signal (SRS) antenna port associated with a plurality of SRS resources of a plurality of SRS resource sets; send an uplink transmission based at least in part on the DCI, etc. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0063] In some aspects, the base station 110 may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may: send a DCI indicating a first TCI, a second TCI, and a precoding matrix for the UE, the first TCI being associated with a first antenna index set of the precoding matrix and the second TCI being associated with a second antenna index set of the precoding matrix; send a DCI to the UE indicating first and second beams of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets; receive an uplink transmission from the UE based at least in part on the DCI, etc. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0064] As mentioned above, providing Figure 1 The examples are for example only. Other examples may differ from the examples about Figure 1 Examples described.

[0065] Figure 2 is a diagram illustrating an example 200 of a base station 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The base station 110 may be equipped with T antennas 234a through 234t, and the UE 120 may be equipped with R antennas 252a through 252r, where in general T≥1 and R≥1.

[0066] At the base station 110, a transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). A transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0067] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a channel quality indicator (CQI) parameter, etc. In some aspects, one or more components of the UE 120 may be included in a housing.

[0068] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0069] The antennas (e.g., antennas 234a through 234t and / or antennas 252a through 252r) may include, or may be included in, one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, etc. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements coupled to one or more transmit and / or receive components (such as Figure 2 One or more antenna elements of one or more components).

[0070] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from a controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in a modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, and / or TX MIMO processors 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein.

[0071] At base station 110, uplink signals from UE 120 and other UEs may be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include a communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include a scheduler 246 to schedule UE 120 for downlink and / or uplink communications. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in a modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modulators and / or demodulators 232, MIMO detectors 236, receive processors 238, transmit processors 220, and / or TX MIMO processors 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein.

[0072] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component of the may perform one or more techniques related to associating TCI with precoders in uplink transmissions, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of may perform or direct e.g. Figure 9 The process of 900 Figure 10 The process of 1000 Figure 11 Process 1100, Figure 12 1200 and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communications. For example, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly or after compilation, conversion, and / or interpretation), the one or more instructions may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example, Figure 9 The process of 900 Figure 10 The process of 1000 Figure 11 Process 1100, Figure 12 The operations of process 1200 and / or other processes as described herein. In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0073] In some aspects, the UE 120 may include: a component for receiving a DCI indicating a first TCI, a second TCI, and a precoding matrix, the first TCI being associated with a first antenna index set of the precoding matrix and the second TCI being associated with a second antenna index set of the precoding matrix; a component for receiving a DCI indicating a first beam and a second beam of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets; a component for sending an uplink transmission based at least in part on the DCI, etc. Additionally or alternatively, the UE 120 may include components for performing one or more other operations described herein. In some aspects, these components may include the communications manager 140. Additionally or alternatively, these components may include a communication manager 140 in conjunction with Figure 2 One or more components of UE 120 are described.

[0074] In some aspects, the base station 110 may include: a component for sending a DCI indicating a first TCI, a second TCI, and a precoding matrix for the UE, the first TCI being associated with a first antenna index set of the precoding matrix and the second TCI being associated with a second antenna index set of the precoding matrix; a component for sending a DCI to the UE, the DCI indicating a first beam and a second beam of a first antenna index set and a second antenna index set for identifying an SRS antenna port associated with a plurality of SRS resources of a plurality of SRS resource sets; a component for receiving an uplink transmission from the UE based at least in part on the DCI, etc. Additionally or alternatively, the base station 110 may include a component for performing one or more other operations described herein. In some aspects, these components may include a communications manager 150. In some aspects, these components may include a communication manager 150 in combination with a communication manager 150. Figure 2 One or more components of base station 110 are described.

[0075] Although Figure 2 The blocks in FIG. 2 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0076] As mentioned above, providing Figure 2 The examples are for example only. Other examples may differ from the examples about Figure 2 Examples described.

[0077] In one or more examples, a UE may receive DCI (e.g., in a DCI field for an antenna port) indicating two TCI states (e.g., in a code point of a DCI field for a transmission configuration indication) and one or more DMRS ports within two code division multiplexing (CDM) groups. Here, a first of the two TCI states may correspond to a CDM group for a first antenna port indicated by an antenna port indication table, and a second of the two TCI states may correspond to another CDM group.

[0078] In one or more examples, the UE may use a beam to transmit an uplink transmission. The beam may be indicated by a TCI (e.g., a TCI state) in a DCI received by the UE. The UE may use a precoding matrix to generate a beam for transmitting the uplink transmission. The precoding matrix may be identified by a TPMI indicated in the DCI.

[0079] In one or more examples, the DCI may indicate multiple TCIs (i.e., multiple beams) for uplink transmission (e.g., multi-panel uplink transmission) and a single precoding matrix for uplink transmission. However, the association between the precoders of the single precoding matrix and the multiple TCIs may be unknown. For example, it may not be clear which precoders of the single precoding matrix are used to generate a first beam indicated by the multiple TCIs and which precoders of the single precoding matrix are used to generate a second beam indicated by the multiple TCIs.

[0080] Some techniques and apparatus described herein enable a UE to determine the association between multiple TCIs used for uplink transmission and the precoders of a single precoding matrix used for uplink transmission. In some aspects, the UE may receive a DCI indicating first and second TCIs and a single precoding matrix. The single precoding matrix may include precoders for the first and second TCIs. However, the DCI may not identify the precoder for the first TCI and the precoder for the second TCI. In some aspects, the UE may determine that the first TCI is associated with a first set of antenna ports identified by the precoding matrix (e.g., port 0 and port 2) and the second TCI is associated with a second set of antenna ports identified by the precoding matrix (e.g., port 1 and port 3). Thus, the UE may perform multi-panel uplink transmission based at least in part on the association of the TCIs with the antenna port sets. Using a single precoding matrix for multiple TCIs improves signaling overhead and saves network resources. In addition, the precoding matrix can be used to implicitly indicate the type of uplink transmission (e.g., dynamic panel selection transmission, non-coherent joint transmission, or joint transmission), which further improves signaling overhead and saves network resources.

[0081] Figure 3A 3 is a diagram illustrating an example 300 of association of TCI with precoders in uplink transmission according to the present disclosure. Figure 3A As shown, UE 120 and BS 110 can communicate in conjunction with uplink transmissions. In some aspects, the uplink transmissions can use multiple antenna panels of UE 120 (e.g., the uplink transmissions can be simultaneous uplink transmissions). For example, the uplink transmissions can be joint transmissions (e.g., where multiple antenna panels (i.e., multiple beams) are used to send multi-layer transmissions for each layer) or non-coherent joint transmissions (e.g., where corresponding antenna panels (i.e., corresponding beams) are used to send multi-layer transmissions for each layer). In some aspects, the uplink transmissions can be enabled to use multiple antenna panels of UE 120. For example, the uplink transmissions can be dynamic panel selection transmissions (e.g., where the multi-layer transmissions for each layer are sent using the same dynamically selected antenna panel (i.e., the same beam).

[0082] As shown by reference numeral 305, BS 110 may transmit and UE 120 may receive one or more configurations of mappings to be used by UE 120. In some aspects, BS 110 may transmit a configuration for a mapping of DMRS ports (e.g., mappings 442, 462, and / or 472, as described below). For example, the mapping may map an index value to a DMRS port and a CDM group indication. In some aspects, BS 110 may transmit a configuration for a mapping of a TPMI. For example, the mapping may map an index value to a TPMI.

[0083] As shown by reference numeral 310, BS 110 may transmit DCI and UE 120 may receive the DCI. The DCI may provide an uplink grant for an uplink transmission of UE 120. In some aspects, the DCI may indicate a first TCI and a second TCI (e.g., in a code point of a TCI field of the DCI). The first TCI and the second TCI may identify respective beams (or antenna groups) used for uplink transmission of UE 120. In some aspects, the TCI may identify a reference signal associated with a beam or receive spatial filter that provides spatial relationship information or quasi co-location (QCL) information, such as a channel state information reference signal (CSI-RS), a synchronization signal block (SSB), an SRS, etc. In some aspects, the TCI may identify a reference signal set, such as a CSI-RS resource set, an SRS resource set, etc.

[0084] In some aspects, the DCI may indicate a precoding matrix. For example, the DCI may indicate a TPMI index that is mapped to a TPMI associated with the precoding matrix (e.g., according to a mapping received by UE 120). The precoding matrix may include precoders for antennas in multiple layers.

[0085] In some aspects, the DCI may indicate a DMRS antenna port set (e.g., in an antenna port field of the DCI). For example, the DCI may indicate a DMRS antenna port index that is mapped to the DMRS antenna port set (e.g., according to a mapping received by UE 120). The DMRS antenna port may be associated with a particular CDM group. For example, one or more first DMRS antenna ports of the set may be associated with a first CDM group, and one or more second DMRS antenna ports of the set may be associated with a second CDM group.

[0086] As shown by reference numeral 315, UE 120 may determine an association between the TCI indicated by the DCI and the precoder of the precoding matrix indicated by the DCI. For example, UE 120 may determine that a first TCI is associated with a first antenna index set of the precoding matrix and a second TCI is associated with a second antenna index set of the precoding matrix, as shown in conjunction with Figure 4AAs shown in reference numeral 320, UE 120 may determine a transmission scheme associated with the DCI (e.g., whether the DCI is for joint transmission, non-coherent joint transmission, or dynamic panel selection transmission) based at least in part on the precoding matrix and the determined association, as shown in conjunction with Figure 5-7 described.

[0087] As shown by reference numeral 325, based on the determined association and transmission scheme, UE 120 may transmit an uplink transmission and BS 110 may receive the uplink transmission. For example, UE 120 may transmit a joint transmission using a first beam according to a precoder associated with a first TCI and a second beam according to a precoder associated with a second TCI. As another example, UE 120 may transmit a non-coherent joint transmission using a first beam according to a precoder associated with the first TCI and a second beam according to a precoder associated with the second TCI. As another example, UE 120 may transmit an uplink transmission (e.g., a single-panel transmission) using a first beam according to a precoder associated with the first TCI or a second beam according to a precoder associated with the second TCI.

[0088] As mentioned above, providing Figure 3A As an example. Other examples may differ from the Figure 3A Examples described.

[0089] Figure 3B is a diagram illustrating an example 350 of multi-panel uplink transmission according to the present disclosure.

[0090] As shown by reference numeral 355, UE 120 may transmit an uplink transmission using a first beam (e.g., according to a first TCI), and BS 110 may receive the uplink transmission using the first beam (e.g., according to the first TCI). UE 120 may transmit the uplink transmission using a first antenna panel associated with a first set of antennas (e.g., antenna ports). As shown by reference numeral 360, UE 120 may transmit an uplink transmission using a second beam (e.g., according to a second TCI), and BS 110 may receive the uplink transmission using the second beam (e.g., according to the second TCI). UE 120 may transmit the uplink transmission using a second antenna panel associated with a second set of antennas (e.g., antenna ports). In some aspects, UE 120 may transmit the uplink transmission to different antenna panels of the same BS 110 (as shown), or to antenna panels of different BSs 110. Multi-panel uplink transmissions may be joint transmissions (e.g., coherent joint transmissions) or non-coherent joint transmissions.

[0091] As mentioned above, providing Figure 3BAs an example. Other examples may differ from the Figure 3B Examples described.

[0092] Figure 4A is a diagram illustrating an example 400 of association of TCI with precoders in uplink transmission according to the present disclosure. Figure 3A As described, UE 120 may receive DCI indicating a precoding matrix. Figure 4A An example precoding matrix 405 is shown that may be indicated by a DCI received by a UE 120 .

[0093] like Figure 4A As shown, the precoding matrix 405 may include precoders in a plurality of columns and a plurality of rows. The columns may represent (e.g., may be mapped to) layers 430 to be transmitted, and the rows may represent (e.g., may be mapped to) antenna indices 435 (e.g., antenna ports). Thus, the X of the precoding matrix 405 may be 0,0 The precoder for the first antenna (eg, associated with antenna index 0) in the first layer 430 (eg, layer 0) may be represented by X of the precoding matrix 405. 1,0 The precoder of the second antenna (eg, associated with antenna index 1) in the first layer 430 (eg, layer 0) may be represented by X of the precoding matrix 405. 0,1 The precoder for the first antenna (e.g., associated with antenna index 0) in the second layer 430 (e.g., layer 1) may be represented, and so on. In some aspects, the precoding matrix 405 may include Figure 4A Different numbers of columns (ie, layers) and / or rows (ie, antennas) are shown.

[0094] In some aspects, the antenna index 435 may identify a physical uplink shared channel (PUSCH) antenna port (e.g., a TPMI antenna port) or an SRS antenna port. For example, the antenna index 435 of the precoding matrix 405 identifying the PUSCH antenna port may also identify the SRS antenna port based at least in part on a one-to-one mapping between the PUSCH antenna port and the SRS antenna port. In some aspects, an SRS antenna port (e.g., associated with antenna indices 0-3) may be associated with a single SRS resource of an SRS resource set that has been configured for codebook use by the UE 120. In some aspects, an SRS antenna port may be associated with multiple SRS resources of an SRS resource set that has been configured for codebook use by the UE 120. In some aspects, an SRS antenna port may be associated with multiple SRS resources of multiple SRS resource sets that have been configured for codebook use by the UE 120.

[0095] If combined Figure 3AAs described, UE 120 may receive DCI indicating a first TCI and a second TCI, and UE 120 may determine an association between the TCI and antenna index 435. For example, Figure 4A As shown, a first TCI (TCI 1) can be associated with (e.g., bundled with) a first antenna index set (e.g., a first TPMI port or SRS port set) of the precoding matrix 405, and a second TCI (TCI 2) can be associated with (e.g., bundled with) a second antenna index set (e.g., a second TPMI port or SRS port set) of the precoding matrix 405. For example, the first TCI can be associated with the precoder 410 (associated with antenna index 0) for the first antenna and the precoder 420 (associated with antenna index 2) for the third antenna (e.g., the first and third antennas can be associated with the first antenna panel). Continuing with the previous example, the second TCI can be associated with the precoder 415 (associated with antenna index 1) for the second antenna and the precoder 425 (associated with antenna index 3) for the fourth antenna (e.g., the second antenna and the fourth antenna can be associated with the second antenna panel).

[0096] UE 120 may determine the association of TCIs with antenna indices based at least in part on a configuration of UE 120. For example, the configuration may indicate an association of a first TCI (TCI 1) with antenna indices 0 and 2 (i.e., even antenna indices), and an association of a second TCI (TCI 2) with antenna indices 1 and 3 (i.e., odd antenna indices), as shown in FIG. Figure 4A In some aspects, the configuration may indicate Figure 4A For example, the first TCI may be associated with odd antenna indices and the second TCI may be associated with even antenna indices, the first TCI may be associated with the two lowest numbered antenna indices and the second TCI may be associated with the two highest numbered antenna indices, and so on.

[0097] As mentioned above, providing Figure 4A The examples are for example only. Other examples may differ from the examples about Figure 4A Examples described.

[0098] Figure 4B 4 is a diagram illustrating an example 440 of association of TCI with precoder in uplink transmission according to the present disclosure. Figure 3A As described, UE 120 may receive DCI indicating a DMRS antenna port set (eg, according to a DMRS antenna port index). Figure 4BAs shown, the DCI may indicate a DMRS antenna port index value of 0, or the DCI may indicate a DMRS antenna port index value of 1. The DMRS antenna port index may identify a DMRS antenna port set according to a mapping 442 configured for the UE 120.

[0099] In some aspects, antenna port sets may be mapped (e.g., one-to-one) to layers of the precoding matrix indicated by the DCI based on their ordering in mapping 442. For example, according to mapping 442, the DMRS antenna port set associated with index value 0 may have an order of 0, 1, 2, 3 (illustrated by 0-3 in mapping 442). In this example, the first layer (i.e., the first column) of precoding matrix 444 may be mapped to DMRS antenna port 0 (DMRS 0), the second layer may be mapped to DMRS antenna port 1 (DMRS1), the third layer may be mapped to DMRS antenna port 2 (DMRS2), and the fourth layer may be mapped to DMRS antenna port 3 (DMRS 3). In other words, the first layer of precoding matrix 444 may be transmitted by UE 120 using DMRS antenna port 0, and so on. Furthermore, a DMRS antenna port set may be associated with one or more CDM groups. For example, as shown, DMRS antenna ports 0 and 1 may be a first CDM group 446 , while DMRS antenna ports 2 and 3 may be a second CDM group 448 .

[0100] As another example, according to mapping 442, the DMRS antenna port set associated with index value 1 may have the order 0, 1, 4, and 5. In this example, as shown, the first layer (i.e., the first column) of precoding matrix 450 may be mapped to DMRS antenna port 0 (DMRS 0), the second layer may be mapped to DMRS antenna port 1 (DMRS 1), the third layer may be mapped to DMRS antenna port 4 (DMRS 4), and the fourth layer may be mapped to DMRS antenna port 5 (DMRS 5). In addition, as shown, DMRS antenna ports 0, 1, 4, and 5 may be a single CDM group 452.

[0101] If combined Figure 3A As described, UE 120 may determine a transmission scheme associated with a DCI based at least in part on a precoding matrix indicated by the DCI. In some aspects, UE 120 may determine a transmission scheme associated with a DCI based on a precoding matrix indicated by the DCI. Figure 4A The transmission scheme is determined by associating the TCI with the antenna index described in the embodiment. Figure 4A As described, a first antenna index set associated with a first TCI may include antenna index 0 and antenna index 2, and a second antenna index set associated with a second TCI may include antenna index 1 and antenna index 3.

[0102] In some aspects, UE 120 may determine that a precoding matrix indicates joint transmission based at least in part on a determination that a layer (e.g., any layer) of the precoding matrix includes precoders for one or more antenna indices of the first antenna index set and the second antenna index set. Precoders with non-zero values ​​may be considered to be included in the precoding matrix, and precoders with zero values ​​may be considered to be excluded from the precoding matrix. In some aspects, non-zero values ​​in a precoding matrix may also be referred to as effective antennas (or effective antenna ports) or non-zero antennas (or non-zero antenna ports).

[0103] As an example, Figure 4B As shown, the precoding matrix 444 indicates joint transmission because each layer (i.e., column) of the precoding matrix 444 includes precoders for one or more antenna indices of the first antenna index set (e.g., antenna index 0 and antenna index 2) and the second antenna index set (e.g., antenna index 1 and antenna index 3), where X in the precoding matrix 444 (e.g., X 0,0 ) indicates a non-zero value for the precoder. In this example, the first TCI (associated with the first antenna index set) and the second TCI (associated with the second antenna index set) can be associated with CDM group 446 (e.g., CDM group 446 includes the precoders associated with the first TCI and the second TCI), and the first TCI and the second TCI can be associated with CDM group 448. That is, the first TCI and the second TCI can be associated with the same CDM group.

[0104] As another example, Figure 4B As shown, precoding matrix 450 indicates joint transmission because each layer of precoding matrix 450 includes precoders for one or more antenna indices of the first antenna index set and the second antenna index set. In this example, a first TCI (associated with the first antenna index set) and a second TCI (associated with the second antenna index set) can be associated with CDM group 452.

[0105] In some aspects, precoding matrix 444 or precoding matrix 450 may correspond to precoding matrix 1:

[0106]

[0107] Precoding matrix 1

[0108] In precoding matrix 1, each layer (ie, column) includes precoders with non-zero values ​​for antenna indices 0 and 2 (first antenna index set) and antenna indices 1 and 3 (second antenna index set), indicating joint transmission.

[0109] In some aspects, the precoding matrix 444 or the precoding matrix 450 may have Figure 4BFor example, precoding matrix 444 or precoding matrix 450 may have three layers and may correspond to precoding matrix 2, or may have two layers and may correspond to precoding matrix 3:

[0110]

[0111] Precoding matrix 2

[0112]

[0113] Precoding matrix 3

[0114] As mentioned above, providing Figure 4B As an example. Other examples may differ from the Figure 4B Examples described.

[0115] Figure 4C 4 is a diagram illustrating an example 460 of association of TCI with a precoder in uplink transmission according to the present disclosure. Figure 4C As shown, by UE 120 (combined Figure 3A The DCI received by the UE 120 may indicate a DMRS antenna port index value of 0. The DMRS antenna port index may identify a DMRS antenna port set according to the mapping 462 configured for the UE 120.

[0116] The antenna port sets may be mapped (e.g., one-to-one) to the layers of the precoding matrix 464 indicated by the DCI according to the ordering of the DMRS antenna port sets in the mapping 462, as described in conjunction with Figure 4B For example, according to the mapping 462, the DMRS antenna port sets associated with the index value 0 may have an order of 0, 1, 2, 3 (shown by 0-3 in the mapping 462), and the DMRS antenna port sets may be mapped to the layers (i.e., columns) of the precoding matrix 464 in this order, as shown in conjunction with Figure 4B Furthermore, as shown, DMRS antenna ports 0 and 1 (DMRS 0 and DMRS 1) may be a first CDM group 466, while DMRS antenna ports 2 and 3 (DMRS 2 and DMRS 3) may be a second CDM group 468.

[0117] UE 120 may determine a transmission scheme associated with a DCI based at least in part on a precoding matrix indicated by the DCI, such as in conjunction with Figure 4B For example, UE 120 may combine Figure 4A The association between the described TCI and the antenna index (for example, the first antenna index set associated with the first TCI may include antenna index 0 and antenna index 2, and the second antenna index set associated with the second TCI may include antenna index 1 and antenna index 3) determines the transmission scheme.

[0118] In some aspects, UE 120 may determine that the precoding matrix indicates non-coherent joint transmission based at least in part on a determination that a first layer of the precoding matrix includes precoders for one or more antenna indices of the first antenna index set and does not include precoders for one or more antenna indices of the second antenna index set, and a second layer of the precoding matrix includes precoders for one or more antenna indices of the second antenna index set and does not include precoders for one or more antenna indices of the first antenna index set. In other words, when the layers (e.g., either layer) of the precoding matrix include precoders for one or more antenna indices for only one of the first antenna index set or the second antenna index set and at least one layer includes a precoder for the first antenna index set and at least one layer includes a precoder for the second antenna index set, the precoding matrix may indicate non-coherent joint transmission.

[0119] As an example, Figure 4C As shown, the precoding matrix 464 indicates non-coherent joint transmission because at least one layer of the precoding matrix 464 (e.g., the layer associated with DMRS 0 and DMRS 1) includes a precoder for one or more antenna indices of the first antenna index set (e.g., antenna index 0 and antenna index 2), and at least one layer of the precoding matrix 464 (e.g., the layer associated with DMRS 2 and DMRS 3) includes a precoder for one or more antenna indices of the second antenna index set (e.g., antenna index 1 and antenna index 3), where X (e.g., X) in the precoding matrix 464 is 0,0 ) indicates a non-zero value for the precoder (indicating that the precoder is included in the precoding matrix 464). In this example, the first TCI (associated with the first antenna index set) can be associated with the CDM group 466 (e.g., the CDM group associated with the smallest group identifier, such as CDM group 0), and the second TCI (associated with the second antenna index set) can be associated with the CDM group 468 (e.g., the CDM group associated with the largest group identifier, such as CDM group 1). That is, the first TCI and the second TCI can be associated with different CDM groups.

[0120] In some aspects, precoding matrix 464 may correspond to precoding matrix 4:

[0121]

[0122] Precoding matrix 4

[0123] In precoding matrix 4, the first and second layers (i.e., the first and second columns) include precoders with non-zero values ​​only for antenna indices 0 and 2 (the first antenna index set), and the third and fourth layers include precoders with non-zero values ​​only for antenna indices 1 and 3 (the second antenna index set), thereby indicating non-coherent joint transmission.

[0124] In some aspects, the precoding matrix 464 may have Figure 4C For example, precoding matrix 464 may have three layers and may correspond to precoding matrix 5, or may have two layers and may correspond to precoding matrix 6:

[0125]

[0126] Precoding matrix 5

[0127]

[0128] Precoding matrix 6

[0129] As mentioned above, providing Figure 4C As an example. Other examples may differ from the Figure 4C Examples described.

[0130] Figure 4D 4 is a diagram illustrating an example 470 of association of TCI with a precoder in uplink transmission according to the present disclosure. Figure 4D As shown, by UE 120 (combined Figure 3A The DCI received by the UE 120 may indicate a DMRS antenna port index value of 0. The DMRS antenna port index may identify a DMRS antenna port set according to a mapping 472 configured for the UE 120.

[0131] The antenna port sets may be mapped (e.g., one-to-one) to the layers of the precoding matrix 474 indicated by the DCI according to the ordering of the DMRS antenna port sets in the mapping 472, as described in conjunction with Figure 4B For example, according to the mapping 472, the DMRS antenna port sets associated with the index value 0 may have an order of 0, 1, and the DMRS antenna port sets may be mapped to the layers (i.e., columns) of the precoding matrix 474 in this order, as described in conjunction with Figure 4B Furthermore, as shown, DMRS antenna ports 0 and 1 (DMRS0 and DMRS1) may be CDM group 476.

[0132] UE 120 may determine a transmission scheme associated with the DCI based at least in part on the precoding matrix indicated by the DCI, such as in conjunction with Figure 4B For example, UE 120 may combine Figure 4AThe described association between TCI and antenna index determines the transmission scheme (for example, a first antenna index set associated with a first TCI may include antenna index 0 and antenna index 2, and a second antenna index set associated with a second TCI may include antenna index 1 and antenna index 3).

[0133] In some aspects, UE 120 may determine that the precoding matrix indicates dynamic panel selection transmission (e.g., non-coherent transmission) based at least in part on a determination that all layers of the precoding matrix include precoders for one or more antenna indices of one of the first antenna index set or the second antenna index set and do not include precoders for one or more antenna indices of the other of the first antenna index set or the second antenna index set. In other words, when the layers of the precoding matrix include precoders for one or more antenna indices of only one of the first antenna index set or the second antenna index set, the precoding matrix may indicate dynamic panel selection transmission.

[0134] As an example, Figure 4D As shown, the precoding matrix 474 indicates dynamic panel selection transmission because each layer (i.e., each layer mapped to a DMRS antenna port) of the precoding matrix 474 (e.g., the layer associated with DMRS 0 and DMRS 1) includes precoders for only one or more antenna indices (e.g., antenna index 1 and antenna index 3) of the second antenna index set, where X in the precoding matrix 474 (e.g., X 1,0 ) indicates a non-zero value for the precoder (indicating that the precoder is included in the precoding matrix 474). In this example, the first TCI (associated with the first antenna index set) may not be associated with a CDM group, and the second TCI (associated with the second antenna index set) may be associated with the CDM group 476 (thereby indicating that the dynamic panel selection transmission will use the beam identified by the second TCI). That is, only one of the first TCI or the second TCI is associated with a CDM group.

[0135] In some aspects, precoding matrix 474 may correspond to precoding matrix 7:

[0136]

[0137] Precoding matrix 7

[0138] In precoding matrix 7, the first layer (i.e., the first column) includes a precoder with a non-zero value for antenna index 1 (in the second antenna index set) and the second layer includes a precoder with a non-zero value for antenna index 3 (in the second antenna index set), and the precoder for the first antenna index set is not included in any layer, thereby indicating dynamic panel selection.

[0139] As mentioned above, providing Figure 4D As an example. Other examples may differ from the Figure 4D Examples described.

[0140] Figure 5 is a diagram illustrating an example 500 of an SRS resource set according to the present disclosure.

[0141] The base station 110 may configure the UE 120 with one or more SRS resource sets to allocate resources for SRS transmission by the UE 120. For example, the configuration for the SRS resource set may be indicated in a radio resource control (RRC) message (e.g., an RRC configuration message or an RRC reconfiguration message). As shown by reference numeral 505, the SRS resource set may include one or more resources (e.g., shown as SRS resources), which may include time resources and / or frequency resources (e.g., time slots, symbols, resource blocks, and / or periodicity for time resources).

[0142] As shown by reference numeral 510, the SRS resources may include one or more antenna ports (e.g., in time-frequency resources) on which the SRS is to be transmitted. Thus, the configuration for an SRS resource set may indicate one or more time-frequency resources on which the SRS is to be transmitted, and may indicate one or more antenna ports in those time-frequency resources on which the SRS is to be transmitted. In some aspects, the configuration for an SRS resource set may indicate a use case for the SRS resource set (e.g., in an SRS-SetUse information element). For example, an SRS resource set may have use cases for antenna switching, codebook, non-codebook, or beam management.

[0143] The antenna switching SRS resource set may be used to indicate downlink CSI in the case of reciprocity between uplink and downlink channels. For example, when reciprocity exists between uplink and downlink channels, base station 110 may use an antenna switching SRS (e.g., an SRS transmitted using resources of the antenna switching SRS resource set) to obtain downlink CSI (e.g., to determine a downlink precoder for use in communication with UE 120).

[0144] When base station 110 indicates an uplink precoder to UE 120, a codebook SRS resource set may be used to indicate uplink CSI. For example, when base station 110 is configured to indicate an uplink precoder to UE 120 (e.g., using a precoder codebook), base station 110 may use a codebook SRS (e.g., an SRS sent using resources of a codebook SRS resource set) to obtain uplink CSI (e.g., to determine a downlink precoder to be indicated to UE 120 and used by UE 120 to communicate with base station 110). In some aspects, a virtual port (e.g., a combination of two or more antenna ports) with maximum transmit power may be supported for at least codebook SRS.

[0145] When UE 120 selects an uplink precoder (e.g., rather than base station 110 indicating an uplink precoder to be used by UE 120), a non-codebook SRS resource set may be used to indicate uplink CSI. For example, when UE 120 is configured to select an uplink precoder, base station 110 may use a non-codebook SRS (e.g., an SRS transmitted using resources of a non-codebook SRS resource set) to obtain uplink CSI. In this case, the non-codebook SRS may be precoded using the precoder selected by UE 120 (e.g., which may be indicated to base station 110).

[0146] The beam-managed SRS resource set may be used to indicate CSI for mmWave communications.

[0147] SRS resources can be configured as periodic, semi-persistent (sometimes referred to as semi-persistent scheduling (SPS)), or aperiodic. Periodic SRS resources can be configured via a configuration message that indicates the periodicity of the SRS resources (e.g., slot-level periodicity, where the SRS resources appear every Y slots) and the slot offset. In some cases, periodic SRS resources may always be activated and may not be dynamically activated or deactivated. Semi-persistent SRS resources can also be configured via a configuration message that indicates the periodicity and slot offset of the semi-persistent SRS resources and can be dynamically activated and deactivated (e.g., using DCI or medium access control (MAC) control element (CE) (MAC-CE)). Aperiodic SRS resources can be triggered dynamically, such as via DCI (e.g., UE-specific DCI or group-common DCI) or MAC-CE.

[0148] In some aspects, the UE 120 may be configured with a mapping between SRS ports (e.g., antenna ports) and corresponding SRS resources. The UE 120 may use the SRS ports indicated in the configuration to transmit SRS on a particular SRS resource. In some aspects, the SRS resource may span N adjacent symbols within a slot (e.g., where N is equal to 1, 2, or 4). The UE 120 may be configured with X SRS ports (e.g., where X ≤ 4). In some aspects, each of the X SRS ports may be mapped to a corresponding symbol of the SRS resource and used for transmission of the SRS in that symbol.

[0149] like Figure 5 As shown, in some aspects, different SRS resource sets (e.g., having different use cases) indicated to UE 120 may overlap (e.g., in time and / or in frequency, such as in the same time slot). For example, as shown by reference numeral 515, a first SRS resource set (e.g., shown as SRS resource set 1) is shown as having an antenna switching use case. As shown, this example antenna switching SRS resource set includes a first SRS resource (shown as SRS resource A) and a second SRS resource (shown as SRS resource B). Thus, the antenna switching SRS may be transmitted in SRS resource A (e.g., a first time-frequency resource) using antenna port 0 and antenna port 1, and may be transmitted in SRS resource B (e.g., a second time-frequency resource) using antenna port 2 and antenna port 3.

[0150] As shown by reference numeral 520, a second SRS resource set (e.g., shown as SRS resource set 2) may be a codebook use case. As shown, this example codebook SRS resource set includes only the first SRS resource (shown as SRS resource A). Therefore, the codebook SRS may be transmitted in SRS resource A (e.g., the first time-frequency resource) using antenna port 0 and antenna port 1. In this case, UE 120 may not use antenna port 2 and antenna port 3 to transmit the codebook SRS in SRS resource B (e.g., the second time-frequency resource).

[0151] As mentioned above, providing Figure 5 As an example. Other examples may differ from the Figure 5 Examples described.

[0152] Figure 6 6 is a diagram illustrating an example 600 of a reference signal in a wireless network according to the present disclosure. Figure 6 As shown, the uplink reference signal may carry information from the UE 120 to the base station 110 .

[0153] DMRS 605 may carry information used to estimate a radio channel for demodulating an associated physical channel (e.g., PUSCH). The design and mapping of DMRS 605 may be specific to the physical channel being estimated using DMRS 605. DMRS 605 may be UE-specific, may be beamformed, may be confined to scheduled resources (e.g., rather than being transmitted over a wideband), and may be transmitted only when needed.

[0154] The SRS 610 may carry information for uplink channel estimation, which may be used for scheduling, link adaptation, precoder selection, or beam management, among other things. Base station 110 may configure one or more SRS resource sets for UE 120, as described above, and UE 120 may transmit the SRS 610 on the configured SRS resource sets. The SRS resource sets may have configured uses, such as uplink CSI acquisition, downlink CSI acquisition for reciprocity-based operation, uplink beam management, and the like, as described above. Base station 110 may measure the SRS 610, may perform channel estimation based at least in part on the measurements, and may use the SRS measurements to configure communications with UE 120.

[0155] As mentioned above, providing Figure 6 As an example. Other examples may differ from the Figure 6 Examples described.

[0156] Figure 7 7 is a diagram illustrating an example 700 of using beams for communication between a base station and a UE according to the present disclosure. Figure 7 As shown, base station 110 and UE 120 may communicate with each other.

[0157] UE 120 may transmit in the direction of base station 110 using a directional UE transmit beam, and base station 110 may receive the transmission using a directional BS receive beam. Each UE transmit beam may have an associated beam ID, beam direction, or beam symbol, etc. UE 120 may transmit uplink communications via one or more UE transmit beams 715.

[0158] Base station 110 may receive uplink transmissions via one or more BS receive beams 720. Base station 110 may identify a particular UE transmit beam 715 (illustrated as UE transmit beam 715-A) and a particular BS receive beam 720 (illustrated as BS receive beam 720-A) that provides relatively good performance (e.g., having the best channel quality for different measured combinations of UE transmit beam 715 and BS receive beam 720). In some examples, base station 110 may send an indication of which UE transmit beam 715 has been identified by base station 110 as a preferred UE transmit beam, which base station 110 may select for transmission from UE 120. UE 120 and base station 110 may thus obtain and maintain a beam pair link (e.g., a combination of UE transmit beam 715-A and BS receive beam 720-A) for uplink communication, which may be further refined and maintained according to one or more established beam refinement procedures. Uplink beams, such as UE transmit beam 715 or BS receive beam 720, may be associated with a spatial relationship. The spatial relationship may indicate the directionality or characteristics of the uplink beam. In some examples, the uplink beam may be indicated by an uplink TCI state.

[0159] As mentioned above, providing Figure 7 As an example. Other examples may differ from the Figure 7 Examples described.

[0160] Figure 8 is a diagram illustrating one or more examples of precoder matrices according to the present disclosure. In some aspects, a UE may be configured or otherwise provided with one or more precoder matrices. The precoder matrix to be used by the UE for uplink transmission may be indicated to the UE via the TPMI (e.g., in the DCI), as described above.

[0161] Example 800 shows a precoder matrix (P) for a single panel transmission using multiple transmission layers. In example 800, v1 represents the precoder for the first layer, v2 represents the precoder for the second layer, and v L represents the precoder used for layer L.

[0162] Example 805 illustrates a precoder matrix (P) for transmission using dynamic panel selection. In example 805, represents the precoder for the first layer of the first antenna panel (A), represents the precoder for the second layer of the first antenna panel (A), represents the precoder for the first layer of the second antenna panel (B), and Represents the precoder for the second layer of the second antenna panel (B). Thus, a transmission using dynamic panel selection can be a multi-layer transmission in which each layer is sent using the same dynamically selected antenna panel (e.g., in the DCI). An antenna panel may include a set of antenna ports and may be identified by an explicit panel identifier or an implicit resource identifier (such as a reference signal identifier, TCI, etc.).

[0163] Example 810 illustrates a precoder matrix (P) for non-coherent joint transmission (e.g., transmission using spatial division multiplexing (SDM)). In example 810, represents the precoder for the first layer of the first antenna panel (A), and Denotes the precoder for the second layer of the second antenna panel (B). Thus, the non-coherent joint transmission can be a multi-layer transmission, where each layer is sent using a corresponding antenna panel.

[0164] Example 815 shows a precoder matrix (P) for joint transmission (e.g., aggregate panel transmission). In Example 815, represents the precoder for the first layer of the first antenna panel (A), represents the precoder for the second layer of the first antenna panel (A), represents the precoder for the first layer of the second antenna panel (B), and Denotes the precoder for the second layer of the second antenna panel (B). Thus, the joint transmission can be a multi-layer transmission where each layer is sent using multiple antenna panels.

[0165] As mentioned above, providing Figure 8 As an example. Other examples may differ from the Figure 8 Examples described.

[0166] Figure 9 is a diagram illustrating an example process 900, performed, for example, by a UE, in accordance with the present disclosure. Example process 900 is an example of a UE (eg, UE 120) performing operations associated with associating TCI with a precoder in uplink transmissions.

[0167] like Figure 9 As shown, in some aspects, process 900 may include receiving a DCI indicating a first TCI, a second TCI, and a precoding matrix, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix (block 910). For example, as described above, a UE (e.g., using Figure 13Depicted receiving component 1302) can receive DCI indicating a first TCI, a second TCI, and a precoding matrix, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix.

[0168] In some aspects, process 900 may include determining that a first TCI is associated with a first set of antenna indices for a precoding matrix and a second TCI is associated with a second set of antenna indices for a precoding matrix (block 915). Figure 13 The determining component 1308 depicted in can determine that the first TCI is associated with a first set of antenna indices for the precoding matrix and the second TCI is associated with a second set of antenna indices for the precoding matrix, as described above.

[0169] like Figure 9 As further shown, in some aspects, process 900 may include sending an uplink transmission based at least in part on the DCI (block 920). For example, as described above, the UE (e.g., using Figure 13 Depicted transmitting component 1304) can transmit an uplink transmission based at least in part on the DCI.

[0170] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0171] In a first aspect, the first antenna index set and the second antenna index set identify PUSCH antenna ports or SRS antenna ports.

[0172] In a second aspect, alone or in combination with the first aspect, an SRS antenna port is associated with a single SRS resource of an SRS resource set, multiple SRS resources of a single SRS resource set, or multiple SRS resources of multiple SRS resource sets.

[0173] In a third aspect, alone or in combination with one or more of the first and second aspects, the DCI further indicates a DMRS antenna port set.

[0174] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the layers of the precoding matrix are mapped to the DMRS antenna port sets according to their ordering.

[0175] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, a precoding matrix indicates DCI for joint transmission based at least in part on a layer of a precoding matrix including precoders for one or more antenna indices of a first antenna index set and one or more antenna indices of a second antenna index set.

[0176] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the first TCI and the second TCI are associated with the same CDM group.

[0177] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the precoding matrix indicates that DCI is used for non-coherent joint transmission based at least in part on a first layer of the precoding matrix and a second layer of the precoding matrix, the first layer including precoders for one or more antenna indices of the first antenna index set and not including precoders for one or more antenna indices of the second antenna index set, and the second layer including precoders for one or more antenna indices of the second antenna index set and not including precoders for one or more antenna indices of the first antenna index set.

[0178] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the first TCI is associated with a first CDM group, and the second TCI is associated with a second CDM group.

[0179] In a ninth aspect, alone or in combination with one or more of aspects one to eight, a precoding matrix indicates DCI for dynamic panel selection based at least in part on all layers of the precoding matrix including precoders for one or more antenna indices of the first antenna index set or the second antenna index set and not including precoders for one or more antenna indices of the other of the first antenna index set or the second antenna index set.

[0180] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the first TCI or the second TCI is associated with a CDM group.

[0181] Although Figure 9 Example blocks of process 900 are shown, but in some aspects, process 900 may include Figure 9 More blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in . Additionally or alternatively, two or more blocks of process 900 can be performed in parallel.

[0182] Figure 10 is a diagram illustrating an example process 1000, performed, for example, by a base station, in accordance with the present disclosure. Example process 1000 is an example of operations performed by a base station (eg, base station 110) associated with associating TCI with a precoder in uplink transmissions.

[0183] In some aspects, process 1000 may include determining a first TCI, a second TCI, and a precoding matrix for the UE (block 1005). For example, as described above, a base station (e.g., using Figure 16Depicted determining component 1608) can determine a first TCI, a second TCI, and a precoding matrix for a UE.

[0184] like Figure 10 As shown, in some aspects, process 1000 may include sending a DCI indicating a first TCI, a second TCI, and a precoding matrix for a UE, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix (block 1010). For example, a base station (e.g., using Figure 16 The depicted transmitting component 1604) can transmit DCI indicating a first TCI, a second TCI, and a precoding matrix for the UE, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix, as described above.

[0185] like Figure 10 As further shown, in some aspects, process 1000 may include receiving an uplink transmission from a UE based at least in part on the DCI (block 1020). For example, as described above, a base station (e.g., using Figure 16 Depicted receiving component 1602) can receive an uplink transmission from a UE based at least in part on the DCI.

[0186] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0187] In a first aspect, the first antenna index set and the second antenna index set identify PUSCH antenna ports or SRS antenna ports.

[0188] In a second aspect, alone or in combination with the first aspect, an SRS antenna port is associated with a single SRS resource of an SRS resource set, multiple SRS resources of a single SRS resource set, or multiple SRS resources of multiple SRS resource sets.

[0189] In a third aspect, alone or in combination with one or more of the first and second aspects, the DCI further indicates a DMRS antenna port set.

[0190] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the layers of the precoding matrix are mapped to the DMRS antenna port sets according to their ordering.

[0191] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, a precoding matrix indicates DCI for joint transmission based at least in part on a layer of a precoding matrix including precoders for one or more antenna indices of a first antenna index set and one or more antenna indices of a second antenna index set.

[0192] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the first TCI and the second TCI are associated with the same CDM group.

[0193] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the precoding matrix indicates that DCI is used for non-coherent joint transmission based at least in part on a first layer of the precoding matrix and a second layer of the precoding matrix, the first layer including precoders for one or more antenna indices of the first antenna index set and not including precoders for one or more antenna indices of the second antenna index set, and the second layer including precoders for one or more antenna indices of the second antenna index set and not including precoders for one or more antenna indices of the first antenna index set.

[0194] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the first TCI is associated with a first CDM group, and the second TCI is associated with a second CDM group.

[0195] In a ninth aspect, alone or in combination with one or more of aspects one to eight, a precoding matrix indicates DCI for dynamic panel selection based at least in part on all layers of the precoding matrix including precoders for one or more antenna indices of the first antenna index set or the second antenna index set and not including precoders for one or more antenna indices of the other of the first antenna index set or the second antenna index set.

[0196] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the first TCI or the second TCI is associated with a CDM group.

[0197] Although Figure 10 Example blocks of process 1000 are shown, but in some aspects, process 1000 may include more Figure 10 More blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. Additionally or alternatively, two or more blocks of process 1000 can be performed in parallel.

[0198] Figure 11 is a diagram illustrating an example process 1100, performed, for example, by a UE, in accordance with the present disclosure. Example process 1100 is an example of a UE (eg, UE 120) performing operations associated with the use of multiple SRS resource sets.

[0199] like Figure 11 As shown, in some aspects, process 1100 may include receiving a DCI indicating first beams and second beams of a first set of antenna indices and a second set of antenna indices for identifying sounding reference signal (SRS) antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets (block 1110). For example, as described above, a UE (e.g., using Figure 13 Depicted receiving component 1302) can receive DCI indicating first and second beams of a first and second antenna index sets identifying sounding reference signal (SRS) antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets.

[0200] like Figure 11 As further shown, in some aspects, process 1100 may include sending an uplink transmission based at least in part on the DCI (block 1120). For example, as described above, the UE (e.g., using Figure 13 Depicted transmitting component 1304) can transmit an uplink transmission based at least in part on the DCI.

[0201] Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0202] In a first aspect, the first antenna index set and the second antenna index set identify PUSCH antenna ports, and the PUSCH antenna ports identify SRS antenna ports according to a mapping of PUSCH antenna ports to SRS antenna ports.

[0203] In a second aspect, alone or in combination with the first aspect, an uplink transmission is sent using a first beam and a second beam.

[0204] In a third aspect, alone or in combination with one or more of the first and second aspects, the uplink transmission is a multi-panel uplink transmission.

[0205] Although Figure 11 Example blocks of process 1100 are shown, but in some aspects, process 1100 may include Figure 11 More blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. Additionally or alternatively, two or more blocks of process 1100 can be performed in parallel.

[0206] Figure 12is a diagram illustrating an example process 1200, performed, for example, by a base station, in accordance with the present disclosure. Example process 1200 is an example of a base station (eg, base station 110) performing operations associated with the use of multiple SRS resource sets.

[0207] like Figure 12 As shown, in some aspects, process 1200 may include sending a DCI to a UE, the DCI indicating first beams and second beams of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets (block 1210). For example, as described above, a base station (e.g., using Figure 16 Depicted transmitting component 1604) can transmit DCI to a UE indicating first and second beams of a first and second antenna index sets identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets.

[0208] like Figure 12 As further shown, in some aspects, process 1200 may include receiving an uplink transmission from a UE based at least in part on the DCI (block 1220). For example, as described above, a base station (e.g., using Figure 16 Depicted receiving component 1602) can receive an uplink transmission from a UE based at least in part on the DCI.

[0209] Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0210] In a first aspect, the first antenna index set and the second antenna index set identify PUSCH antenna ports, and the PUSCH antenna ports identify SRS antenna ports according to a mapping of PUSCH antenna ports to SRS antenna ports.

[0211] In a second aspect, alone or in combination with the first aspect, an uplink transmission is received using the first beam or the second beam.

[0212] In a third aspect, alone or in combination with one or more of the first and second aspects, the uplink transmission is a multi-panel uplink transmission.

[0213] Although Figure 12 Example blocks of process 1200 are shown, but in some aspects, process 1200 may include more Figure 12 More blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. Additionally or alternatively, two or more blocks of process 1200 can be performed in parallel.

[0214] Figure 131 is a diagram of an example apparatus 1300 for wireless communication according to the present disclosure. Apparatus 1300 may be a UE, or a UE may include apparatus 1300. In some aspects, apparatus 1300 includes a receiving component 1302 and a transmitting component 1304, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1300 may use receiving component 1302 and transmitting component 1304 to communicate with another apparatus 1306 (such as a UE, a base station, or another wireless communication device). As further shown, apparatus 1300 may include a determining component 1308, among other things.

[0215] In some aspects, the apparatus 1300 may be configured to perform Figures 3A to 7 Additionally or alternatively, the apparatus 1300 may be configured to perform one or more of the processes described herein, such as Figure 9 The process of 900 Figure 11 In some aspects, Figure 13 The device 1300 and / or one or more components shown may include a combination of the above Figure 2 Additionally or alternatively, Figure 13 One or more components shown in the above may be combined Figure 2 In addition or alternatively, one or more components in the component set may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

[0216] The receiving component 1302 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1306. The receiving component 1302 may provide the received communications to one or more other components of the device 1300. In some aspects, the receiving component 1302 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to the one or more other components of the device 1306. In some aspects, the receiving component 1302 may include a combination of the above. Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a described UE.

[0217] The transmitting component 1304 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 1306. In some aspects, one or more other components of the device 1306 may generate communications and may provide the generated communications to the transmitting component 1304 for transmission to the device 1306. In some aspects, the transmitting component 1304 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding) on ​​the generated communications and may transmit the processed signals to the device 1306. In some aspects, the transmitting component 1304 may include a combination of the above. Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmitting component 1304 can be co-located with the receiving component 1302 in a transceiver.

[0218] The receiving component 1302 may receive a DCI indicating a first TCI, a second TCI, and a precoding matrix, the first TCI being associated with a first antenna index set of the precoding matrix and the second TCI being associated with a second antenna index set of the precoding matrix. The transmitting component 1304 may transmit an uplink transmission based at least in part on the DCI. The determining component 1308 may determine that the first TCI is associated with the first antenna index set of the precoding matrix and the second TCI is associated with the second antenna index set of the precoding matrix. In some aspects, the determining component 1308 may include the above in combination with Figure 2 A controller / processor, memory, or a combination thereof of a described UE.

[0219] Receiving component 1302 can receive DCI indicating first and second beams of first and second antenna index sets identifying SRS antenna ports associated with multiple SRS resources of multiple SRS resource sets. Transmitting component 1304 can transmit an uplink transmission based at least in part on the DCI.

[0220] Figure 13 The number and arrangement of components shown are provided as examples. Figure 13 There may be additional components, fewer components, different components, or differently arranged components than those shown. Figure 13 Two or more components shown may be implemented in a single component, or Figure 13 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 13 The illustrated set of components (one or more components) may perform the functions described as being Figure 13 Another set of components is shown to perform one or more functions.

[0221] Figure 14is a diagram illustrating an example 1400 of a hardware implementation of an apparatus 1405 employing a processing system 1410 according to the present disclosure. The apparatus 1405 may be a UE.

[0222] The processing system 1410 can be implemented using a bus architecture, generally represented by bus 1415. Bus 1415 can include any number of interconnecting buses and bridges, depending on the specific application of the processing system 1410 and the overall design constraints. Bus 1415 connects various circuits together, including one or more processors and / or hardware components represented by processor 1420, the illustrated components, and computer-readable media / memory 1425. Bus 1415 can also connect various other circuits, such as timing sources, peripherals, voltage regulators, and / or power management circuits.

[0223] The processing system 1410 may be coupled to a transceiver 1430. The transceiver 1430 is coupled to one or more antennas 1435. The transceiver 1430 provides a means for communicating with various other devices over a communication medium. The transceiver 1430 receives signals from the one or more antennas 1435, extracts information from the received signals, and provides the extracted information to the processing system 1410, specifically to the receiving component 1302. In addition, the transceiver 1430 receives information from the processing system 1410 (specifically, the transmitting component 1304) and generates signals based at least in part on the received information for application to the one or more antennas 1435.

[0224] The processing system 1410 includes a processor 1420 coupled to a computer-readable medium / memory 1425. The processor 1420 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory 1425. When executed by the processor 1420, the software causes the processing system 1410 to perform the various functions described herein with respect to any particular device. The computer-readable medium / memory 1425 may also be used to store data manipulated by the processor 1420 when executing the software. The processing system also includes at least one of the illustrated components. A component may be a software module running on the processor 1420, resident / stored in the computer-readable medium / memory 1425, one or more hardware modules coupled to the processor 1420, or some combination thereof.

[0225] In some aspects, the processing system 1410 can be a component of the UE 120 and can include the memory 282 and / or at least one of the TX MIMO processor 266, the receive processor 258, and / or the controller / processor 280. In some aspects, the apparatus 1405 for wireless communication includes: means for receiving a DCI indicating a first TCI, a second TCI, and a precoding matrix, the first TCI being associated with a first antenna index set of the precoding matrix and the second TCI being associated with a second antenna index set of the precoding matrix; means for receiving a DCI indicating first and second beams of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets; and / or means for sending an uplink transmission based at least in part on the DCI. The aforementioned means can be one or more of the aforementioned means of the apparatus 1300 and / or the processing system 1410 of the apparatus 1405 configured to perform the functions recited by the aforementioned means. As described elsewhere herein, the processing system 1410 may include the TX MIMO processor 266, the receive processor 258, and / or the controller / processor 280. In one configuration, the aforementioned components may be the TX MIMO processor 266, the receive processor 258, and / or the controller / processor 280 configured to perform the functions and / or operations described herein.

[0226] supply Figure 14 As an example. Other examples may differ from the Figure 14 Examples described.

[0227] Figure 15 is a diagram illustrating an example 1500 of an implementation of code and circuitry for an apparatus 1505 according to the present disclosure. The apparatus 1505 may be a UE.

[0228] like Figure 15 As further shown, apparatus 1505 may include circuitry for receiving DCI (circuitry 1510). For example, apparatus 1505 may include circuitry to enable apparatus 1505 to receive DCI indicating a first TCI, a second TCI, and a precoding matrix, the first TCI being associated with a first antenna index set of the precoding matrix, and the second TCI being associated with a second antenna index set of the precoding matrix. As another example, apparatus 1505 may include circuitry to enable apparatus 1505 to receive DCI indicating a first beam and a second beam of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets.

[0229] like Figure 15As further shown, the apparatus 1505 may include circuitry for determining an association between a TCI and an antenna index (circuitry 1515). For example, the apparatus 1505 may include circuitry to enable the apparatus 1505 to determine that a first TCI is associated with a first set of antenna indices of a precoding matrix and a second TCI is associated with a second set of antenna indices of a precoding matrix.

[0230] like Figure 15 As further shown, apparatus 1505 may include circuitry for sending an uplink transmission (circuitry 1520). For example, apparatus 1505 may include circuitry to enable apparatus 1505 to send an uplink transmission based at least in part on the DCI.

[0231] like Figure 15 As further shown, apparatus 1505 may include code (code 1525) stored in computer-readable medium 1425 for receiving DCI. For example, apparatus 1505 may include code that, when executed by processor 1420, may cause processor 1420 to cause transceiver 1430 to receive DCI indicating a first TCI, a second TCI, and a precoding matrix, the first TCI being associated with a first antenna index set of the precoding matrix, and the second TCI being associated with a second antenna index set of the precoding matrix. As another example, apparatus 1505 may include code that, when executed by processor 1420, may cause processor 1420 to cause transceiver 1430 to receive DCI indicating first and second beams of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets.

[0232] like Figure 15 As further shown, the apparatus 1505 may include code (code 1530) stored in the computer-readable medium 1425 for determining an association between a TCI and an antenna index. For example, the apparatus 1505 may include code that, when executed by the processor 1420, causes the processor 1420 to determine that a first TCI is associated with a first set of antenna indices of a precoding matrix and a second TCI is associated with a second set of antenna indices of a precoding matrix.

[0233] like Figure 15 As further shown, apparatus 1505 may include code (code 1535) for transmitting an uplink transmission stored in computer-readable medium 1425. For example, apparatus 1505 may include code that, when executed by processor 1420, may cause processor 1420 to cause transceiver 1430 to transmit an uplink transmission based at least in part on the DCI.

[0234] supply Figure 15 As an example. Other examples may differ from the Figure 15Examples described.

[0235] Figure 16 1 is a diagram of an example apparatus 1600 for wireless communication according to the present disclosure. Apparatus 1600 may be a base station, or a base station may include apparatus 1600. In some aspects, apparatus 1600 includes a receiving component 1602 and a transmitting component 1604, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1600 may use receiving component 1602 and transmitting component 1604 to communicate with another apparatus 1606 (such as a UE, a base station, or another wireless communication device). As further shown, apparatus 1600 may include a determining component 1608, among other things.

[0236] In some aspects, the apparatus 1600 may be configured to perform Figure 5-7 Additionally or alternatively, the apparatus 1600 may be configured to perform one or more of the processes described herein, such as Figure 10 The process of 1000 Figure 12 In some aspects, Figure 16 The device 1600 and / or one or more components shown may include a combination of the above Figure 2 Additionally or alternatively, Figure 16 One or more components shown in the above may be combined Figure 2 In addition or alternatively, one or more components in the component set may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

[0237] The receiving component 1602 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1606. The receiving component 1602 may provide the received communications to one or more other components of the device 1600. In some aspects, the receiving component 1602 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to the one or more other components of the device 1606. In some aspects, the receiving component 1602 may include a combination of the above. Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of a base station are described.

[0238] The transmitting component 1604 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 1606. In some aspects, one or more other components of the device 1606 may generate communications and may provide the generated communications to the transmitting component 1604 for transmission to the device 1606. In some aspects, the transmitting component 1604 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding) on ​​the generated communications and may transmit the processed signals to the device 1606. In some aspects, the transmitting component 1604 may include a combination of the above. Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described base station. In some aspects, the transmit component 1604 can be co-located with the receive component 1602 in a transceiver.

[0239] The transmitting component 1604 may transmit a DCI indicating a first TCI, a second TCI, and a precoding matrix for the UE, the first TCI being associated with a first set of antenna indices for the precoding matrix, and the second TCI being associated with a second set of antenna indices for the precoding matrix. The receiving component 1602 may receive an uplink transmission from the UE based at least in part on the DCI. The determining component 1608 may determine the first TCI, the second TCI, and the precoding matrix for the UE. In some aspects, the determining component 1608 may include a combination of the above. Figure 2 A controller / processor, memory, or a combination thereof of a base station is described.

[0240] The transmitting component 1604 can transmit a DCI to the UE, the DCI indicating first beams and second beams of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with multiple SRS resources of the multiple SRS resource sets. The receiving component 1602 can receive an uplink transmission from the UE based at least in part on the DCI.

[0241] Figure 16 The number and arrangement of components shown are provided as examples. Figure 16 There may be additional components, fewer components, different components, or differently arranged components than those shown. Figure 16 Two or more components shown may be implemented in a single component, or Figure 16 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 16 The illustrated set of components (one or more components) may perform the functions described as being Figure 16 Another set of components is shown to perform one or more functions.

[0242] Figure 17is a diagram illustrating an example 1700 of a hardware implementation of an apparatus 1705 employing a processing system 1710 according to the present disclosure. The apparatus 1705 may be a base station.

[0243] The processing system 1710 can be implemented using a bus architecture, generally represented by bus 1715. Bus 1715 can include any number of interconnecting buses and bridges, depending on the specific application of the processing system 1710 and the overall design constraints. Bus 1715 connects various circuits together, including one or more processors and / or hardware components represented by processor 1720, illustrated components, and computer-readable media / memory 1725. Bus 1715 can also connect various other circuits, such as timing sources, peripherals, voltage regulators, and / or power management circuits.

[0244] The processing system 1710 may be coupled to a transceiver 1730. The transceiver 1730 is coupled to one or more antennas 1735. The transceiver 1730 provides a means for communicating with various other devices over a communication medium. The transceiver 1730 receives signals from the one or more antennas 1735, extracts information from the received signals, and provides the extracted information to the processing system 1710, specifically to the receiving component 1602. In addition, the transceiver 1730 receives information from the processing system 1710 (specifically, the transmitting component 1604) and generates signals based at least in part on the received information for application to the one or more antennas 1735.

[0245] The processing system 1710 includes a processor 1720 coupled to a computer-readable medium / memory 1725. The processor 1720 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory 1725. When executed by the processor 1720, the software causes the processing system 1710 to perform the various functions described herein with respect to any particular device. The computer-readable medium / memory 1725 may also be used to store data manipulated by the processor 1720 when executing the software. The processing system also includes at least one of the illustrated components. A component may be a software module running on the processor 1720, resident / stored in the computer-readable medium / memory 1725, one or more hardware modules coupled to the processor 1720, or some combination thereof.

[0246] In some aspects, the processing system 1710 can be a component of the base station 110 and can include the memory 242 and / or at least one of the TX MIMO processor 230, the receive processor 238, and / or the controller / processor 240. In some aspects, the apparatus 1705 for wireless communication includes: means for transmitting DCI indicating a first TCI, a second TCI, and a precoding matrix for a UE, the first TCI being associated with a first antenna index set of the precoding matrix and the second TCI being associated with a second antenna index set of the precoding matrix; means for transmitting DCI to the UE, the DCI indicating first and second beams of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets; and / or means for receiving an uplink transmission from the UE based at least in part on the DCI. The aforementioned means can be one or more of the aforementioned means of the apparatus 1600 and / or the processing system 1710 of the apparatus 1705 configured to perform the functions recited by the aforementioned means. As described elsewhere herein, the processing system 1710 may include the TX MIMO processor 230, the receive processor 238, and / or the controller / processor 240. In one configuration, the aforementioned components may be the TX MIMO processor 230, the receive processor 238, and / or the controller / processor 240 configured to perform the functions and / or operations described herein.

[0247] supply Figure 17 As an example. Other examples may differ from the Figure 17 Examples described.

[0248] Figure 18 is a diagram illustrating an example 1800 of an implementation of code and circuitry for an apparatus 1805 according to the present disclosure. The apparatus 1805 may be a base station.

[0249] like Figure 18 As further shown, the apparatus 1805 may include circuitry for determining a TCI and a precoding matrix (circuitry 1810). For example, the apparatus 1805 may include circuitry to enable the apparatus 1805 to determine a first TCI, a second TCI, and a precoding matrix for the UE.

[0250] like Figure 18As further shown, apparatus 1805 may include circuitry (circuitry 1815) for transmitting DCI. For example, apparatus 1805 may include circuitry to enable apparatus 1805 to transmit DCI indicating a first TCI, a second TCI, and a precoding matrix for a UE, the first TCI being associated with a first antenna index set of the precoding matrix, and the second TCI being associated with a second antenna index set of the precoding matrix. As another example, apparatus 1805 may include circuitry to enable apparatus 1805 to transmit DCI to a UE, the DCI indicating first beams and second beams of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with a plurality of SRS resources of a plurality of SRS resource sets.

[0251] like Figure 18 As further shown, apparatus 1805 may include circuitry for receiving an uplink transmission (circuitry 1820). For example, apparatus 1805 may include circuitry to enable apparatus 1805 to receive an uplink transmission from a UE based at least in part on a DCI.

[0252] like Figure 18 As further shown, the apparatus 1805 may include code (code 1825) for determining a TCI and a precoding matrix stored in the computer-readable medium 1725. For example, the apparatus 1805 may include code that, when executed by the processor 1720, may cause the processor 1720 to determine a first TCI, a second TCI, and a precoding matrix for the UE.

[0253] like Figure 18 As further shown, apparatus 1805 may include code (code 1830) stored in computer-readable medium 1725 for transmitting DCI. For example, apparatus 1805 may include code that, when executed by processor 1720, may cause processor 1720 to cause transceiver 1730 to transmit DCI indicating a first TCI, a second TCI, and a precoding matrix for a UE, the first TCI being associated with a first antenna index set of the precoding matrix, and the second TCI being associated with a second antenna index set of the precoding matrix. As another example, apparatus 1805 may include code that, when executed by processor 1720, may cause processor 1720 to cause transceiver 1730 to transmit DCI to the UE, the DCI indicating first and second beams of a first antenna index set and a second antenna index set for identifying SRS antenna ports associated with multiple SRS resources of multiple SRS resource sets.

[0254] like Figure 18As further shown, apparatus 1805 may include code (code 1835) for receiving an uplink transmission stored in computer-readable medium 1725. For example, apparatus 1805 may include code that, when executed by processor 1720, may cause processor 1720 to cause transceiver 1730 to receive an uplink transmission from a UE based at least in part on the DCI.

[0255] supply Figure 18 As an example. Other examples may differ from the Figure 18 Examples described.

[0256] The following provides an overview of some aspects of the disclosure:

[0257] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: receiving downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a precoding matrix, wherein the first TCI is associated with a first antenna index set of the precoding matrix, and the second TCI is associated with a second antenna index set of the precoding matrix; and sending an uplink transmission based at least in part on the DCI.

[0258] Aspect 2: The method according to aspect 1, wherein the first antenna index set and the second antenna index set identify physical uplink shared channel antenna ports or sounding reference signal (SRS) antenna ports.

[0259] Aspect 3: The method according to aspect 2, wherein the SRS antenna port is associated with a single SRS resource of an SRS resource set, multiple SRS resources of a single SRS resource set, or multiple SRS resources of multiple SRS resource sets.

[0260] Aspect 4: The method according to any one of aspects 1-3, wherein the DCI further indicates a demodulation reference signal (DMRS) antenna port set.

[0261] Aspect 5: The method according to aspect 4, wherein the layers of the precoding matrix are mapped to the DMRS antenna port sets according to the ordering of the DMRS antenna port sets.

[0262] Aspect 6: The method according to aspect 4, wherein the layers of the precoding matrix are mapped one-to-one to the DMRS antenna port sets according to the ordering of the DMRS antenna port sets.

[0263] Aspect 7: A method according to any one of Aspects 1-6, wherein the precoding matrix indicates that the DCI is for joint transmission based at least in part on a layer of the precoding matrix including a precoder for one or more antenna indices for the first antenna index set and one or more antenna indices for the second antenna index set.

[0264] Aspect 8: The method according to any one of aspects 1-7, wherein the first TCI and the second TCI are associated with the same code division multiplexing group.

[0265] Aspect 9: A method according to any one of Aspects 1-6, wherein the precoding matrix indicates that the DCI is used for non-coherent joint transmission at least in part based on a first layer of the precoding matrix and a second layer of the precoding matrix, the first layer including a precoder for one or more antenna indices of the first antenna index set and not including a precoder for one or more antenna indices of the second antenna index set, and the second layer including a precoder for one or more antenna indices of the second antenna index set and not including a precoder for one or more antenna indices of the first antenna index set.

[0266] Aspect 10: The method according to any one of aspects 1-6 and 9, wherein the first TCI is associated with a first code division multiplexing (CDM) group, and the second TCI is associated with a second CDM group.

[0267] Aspect 11: A method according to any one of Aspects 1-6, wherein the precoding matrix indicates that the DCI is used for dynamic panel selection based at least in part on all layers of the precoding matrix including precoders for one or more antenna indices for one of the first antenna index set or the second antenna index set and not including precoders for one or more antenna indices for the other of the first antenna index set or the second antenna index set.

[0268] Aspect 12: The method according to any one of aspects 1-6 and 11, wherein the first TCI or the second TCI is associated with a code division multiplexing group.

[0269] Aspect 13: A method of wireless communication performed by a base station, comprising: sending downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a precoding matrix for a user equipment (UE), wherein the first TCI is associated with a first antenna index set of the precoding matrix, and the second TCI is associated with a second antenna index set of the precoding matrix; and receiving an uplink transmission from the UE based at least in part on the DCI.

[0270] Aspect 14: The method according to aspect 13, wherein the first antenna index set and the second antenna index set identify physical uplink shared channel antenna ports or sounding reference signal (SRS) antenna ports.

[0271] Aspect 15: The method according to aspect 14, wherein the SRS antenna port is associated with a single SRS resource of an SRS resource set, multiple SRS resources of a single SRS resource set, or multiple SRS resources of multiple SRS resource sets.

[0272] Aspect 16: The method according to any one of aspects 13-15, wherein the DCI further indicates a demodulation reference signal (DMRS) antenna port set.

[0273] Aspect 17: The method according to Aspect 16, wherein the layers of the precoding matrix are mapped to the DMRS antenna port sets according to the ordering of the DMRS antenna port sets.

[0274] Aspect 18: The method according to aspect 16, wherein the layers of the precoding matrix are mapped one-to-one to the DMRS antenna port sets according to the ordering of the DMRS antenna port sets.

[0275] Aspect 19: A method according to any one of Aspects 13-18, wherein the precoding matrix indicates that the DCI is for joint transmission based at least in part on a layer of the precoding matrix including a precoder for one or more antenna indices for the first antenna index set and one or more antenna indices for the second antenna index set.

[0276] Aspect 20: The method according to any one of aspects 13-19, wherein the first TCI and the second TCI are associated with the same code division multiplexing group.

[0277] Aspect 21: A method according to any one of Aspects 13-18, wherein the precoding matrix indicates that the DCI is used for non-coherent joint transmission at least in part based on a first layer of the precoding matrix and a second layer of the precoding matrix, the first layer including a precoder for one or more antenna indices of the first antenna index set and not including a precoder for one or more antenna indices of the second antenna index set, and the second layer including a precoder for one or more antenna indices of the second antenna index set and not including a precoder for one or more antenna indices of the first antenna index set.

[0278] Aspect 22: The method according to any one of aspects 13-18 and 21, wherein the first TCI is associated with a first code division multiplexing (CDM) group and the second TCI is associated with a second CDM group.

[0279] Aspect 23: A method according to any one of Aspects 13-18, wherein the precoding matrix indicates that the DCI is used for dynamic panel selection based at least in part on all layers of the precoding matrix including precoders for one or more antenna indices for one of the first antenna index set or the second antenna index set and not including precoders for one or more antenna indices for the other of the first antenna index set or the second antenna index set.

[0280] Aspect 24: The method according to any one of aspects 13-18 and 23, wherein the first TCI or the second TCI is associated with a code division multiplexing group.

[0281] Aspect 25: A method of wireless communication performed by a user equipment (UE), comprising: receiving downlink control information (DCI), wherein the DCI indicates a first beam and a second beam of a first antenna index set and a second antenna index set for identifying a sounding reference signal (SRS) antenna port associated with multiple SRS resources of multiple SRS resource sets; and sending an uplink transmission based at least in part on the DCI.

[0282] Aspect 26: The method according to aspect 25, wherein the first antenna index set and the second antenna index set identify physical uplink shared channel (PUSCH) antenna ports, and the PUSCH antenna ports identify the SRS antenna ports according to a mapping of PUSCH antenna ports to SRS antenna ports.

[0283] Aspect 27: A method according to Aspect 25, wherein the first antenna index set and the second antenna index set identify physical uplink shared channel (PUSCH) antenna ports, and the PUSCH antenna ports identify the SRS antenna ports according to a one-to-one mapping of PUSCH antenna ports to SRS antenna ports.

[0284] Aspect 28: The method according to any one of aspects 25-27, wherein the uplink transmission is sent using the first beam and the second beam.

[0285] Aspect 29: The method according to any one of aspects 25-28, wherein the uplink transmission is a multi-panel uplink transmission.

[0286] Aspect 30: A method of wireless communication performed by a base station, comprising: sending downlink control information (DCI) to a user equipment (UE), wherein the DCI indicates a first beam and a second beam of a first antenna index set and a second antenna index set for identifying a sounding reference signal (SRS) antenna port associated with multiple SRS resources of a plurality of SRS resource sets; and receiving an uplink transmission from the UE based at least in part on the DCI.

[0287] Aspect 31: The method according to aspect 30, wherein the first antenna index set and the second antenna index set identify a physical uplink shared channel (PUSCH) antenna port, and the PUSCH antenna port identifies the SRS antenna port according to a mapping of a PUSCH antenna port to an SRS antenna port.

[0288] Aspect 32: A method according to aspect 30, wherein the first antenna index set and the second antenna index set identify physical uplink shared channel (PUSCH) antenna ports, and the PUSCH antenna ports identify the SRS antenna ports according to a one-to-one mapping of PUSCH antenna ports to SRS antenna ports.

[0289] Aspect 33: The method according to any one of aspects 30-32, wherein the uplink transmission is received using the first beam or the second beam.

[0290] Aspect 34: The method according to any one of aspects 30-33, wherein the uplink transmission is a multi-panel uplink transmission.

[0291] Aspect 35: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 1-12.

[0292] Aspect 36: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method according to one or more of aspects 1-12.

[0293] Aspect 37: An apparatus for wireless communication, comprising at least one component for performing the method according to one or more of aspects 1-12.

[0294] Aspect 38: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1-12.

[0295] Aspect 39: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 1-12.

[0296] Aspect 40: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more aspects of aspects 13-24.

[0297] Aspect 41: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method according to one or more of aspects 13-24.

[0298] Aspect 42: An apparatus for wireless communication, comprising at least one component for performing the method according to one or more of aspects 13-24.

[0299] Aspect 43: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 13-24.

[0300] Aspect 44: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more aspects of aspects 13-24.

[0301] Aspect 45: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more aspects of aspects 25-29.

[0302] Aspect 46: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method according to one or more of aspects 25-29.

[0303] Aspect 47: An apparatus for wireless communication, comprising at least one component for performing the method according to one or more of aspects 25-29.

[0304] Aspect 48: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 25-29.

[0305] Aspect 49: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more aspects of aspects 25-29.

[0306] Aspect 50: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 30-34.

[0307] Aspect 51: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method according to one or more of aspects 30-34.

[0308] Aspect 52: An apparatus for wireless communication, comprising at least one means for performing the method according to one or more of aspects 30-34.

[0309] Aspect 53: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 30-34.

[0310] Aspect 54: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 30-34.

[0311] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of these aspects.

[0312] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software. Obviously, the systems and / or methods described herein can be implemented in different forms of hardware, firmware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to specific software code - it should be understood that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0313] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0314] Even though particular combinations of features are recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. Indeed, many of these features can be combined in ways not specifically recited in the claims and / or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of the various aspects includes each dependent claim in combination with all other claims in the claim set. As used herein, a phrase referring to "at least one" of a list of items refers to any combination of those items, including single members. As an example, "at least one of a, b, or c" is intended to encompass a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination of multiples of the same elements (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c, or any other order of a, b, and c).

[0315] The elements, actions or instructions used herein should not be interpreted as key or necessary unless clearly described as such. In addition, as used herein, the articles "one" and "an" are intended to include one or more projects and can be used interchangeably with "one or more". Further, as used herein, the article "said" is intended to include one or more projects quoted about the article "said", and can be used interchangeably with "said one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more projects (for example, related projects, unrelated projects, or a combination of related and unrelated projects), and can be used interchangeably with "one or more". In the case of wishing only one project, the phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "with" etc. are intended to be open terms. Further, the phrase "based on" is intended to represent "at least partially based on", unless otherwise clearly stated. In addition, as used herein, the term "or" is intended to be inclusive when used for a series, and can be used interchangeably with "and / or", unless otherwise clearly stated (for example, if used in combination with "any one of the two" or "wherein only one").

Claims

1. A user equipment (UE) for wireless communication, comprising: one or more memories; as well as one or more processors coupled to the one or more memories, the one or more processors configured to cause the UE to: receiving downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a demodulation reference signal (DMRS) antenna port set, wherein the first TCI is associated with a first antenna index set of the DMRS antenna port set, and the second TCI is associated with a second antenna index set of the DMRS antenna port set; as well as An uplink transmission is sent based at least in part on the DCI. 2 . The UE according to claim 1 , wherein the first antenna index set and the second antenna index set identify physical uplink shared channel antenna ports or sounding reference signal (SRS) antenna ports. 3 . The UE according to claim 2 , wherein the SRS antenna port is associated with a single SRS resource of an SRS resource set, a plurality of SRS resources of a single SRS resource set, or a plurality of SRS resources of a plurality of SRS resource sets. The UE according to claim 1 , wherein the DCI further indicates a precoding matrix. The UE according to claim 4 , wherein the layers of the precoding matrix are mapped to the DMRS antenna port sets according to the ordering of the DMRS antenna port sets.

6. The UE of claim 4, wherein the precoding matrix indicates that the DCI is for joint transmission based at least in part on a layer of the precoding matrix including precoders for one or more antenna indices of the first antenna index set and one or more antenna indices of the second antenna index set. 7 . The UE of claim 1 , wherein the first TCI and the second TCI are associated with the same code division multiplexing group.

8. The UE of claim 4, wherein the precoding matrix indicates that the DCI is for non-coherent joint transmission based at least in part on a first layer of the precoding matrix and a second layer of the precoding matrix, wherein the first layer includes a precoder for one or more antenna indices of the first antenna index set and does not include a precoder for one or more antenna indices of the second antenna index set, and the second layer includes a precoder for one or more antenna indices of the second antenna index set and does not include a precoder for one or more antenna indices of the first antenna index set.

9. The UE of claim 1, wherein the first TCI is associated with a first code division multiplexing (CDM) group, and the second TCI is associated with a second CDM group.

10. The UE of claim 4, wherein the precoding matrix indicates that the DCI is for dynamic panel selection based at least in part on all layers of the precoding matrix including precoders for one or more antenna indices for one of the first antenna index set or the second antenna index set and not including precoders for one or more antenna indices for the other of the first antenna index set or the second antenna index set. The UE according to claim 1 , wherein the first TCI or the second TCI is associated with a code division multiplexing group.

12. A network entity for wireless communication, comprising: one or more memories; as well as one or more processors coupled to the one or more memories, the one or more processors configured to cause the network entity to: transmitting downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a demodulation reference signal (DMRS) antenna port set, wherein the first TCI is associated with a first antenna index set of the DMRS antenna port set, and the second TCI is associated with a second antenna index set of the DMRS antenna port set; as well as An uplink transmission is received from a user equipment (UE) based at least in part on the DCI. 13 . The network entity according to claim 12 , wherein the first antenna index set and the second antenna index set identify physical uplink shared channel antenna ports or sounding reference signal (SRS) antenna ports. 14 . The network entity of claim 13 , wherein the SRS antenna port is associated with a single SRS resource of an SRS resource set, a plurality of SRS resources of a single SRS resource set, or a plurality of SRS resources of a plurality of SRS resource sets. The network entity of claim 12 , wherein the DCI further indicates a precoding matrix. 16 . The network entity of claim 15 , wherein the layers of the precoding matrix are mapped to the DMRS antenna port sets according to an ordering of the DMRS antenna port sets.

17. The network entity of claim 15, wherein the precoding matrix indicates that the DCI is for joint transmission based at least in part on a layer of the precoding matrix including precoders for one or more antenna indices of the first antenna index set and one or more antenna indices of the second antenna index set.

18. The network entity of claim 12, wherein the first TCI and the second TCI are associated with the same code division multiplexing group.

19. The network entity of claim 15 , wherein the precoding matrix indicates that the DCI is for non-coherent joint transmission based at least in part on a first layer of the precoding matrix and a second layer of the precoding matrix, wherein the first layer includes a precoder for one or more antenna indices of the first antenna index set and does not include a precoder for one or more antenna indices of the second antenna index set, and the second layer includes a precoder for one or more antenna indices of the second antenna index set and does not include a precoder for one or more antenna indices of the first antenna index set.

20. The network entity of claim 12, wherein the first TCI is associated with a first code division multiplexing (CDM) group, and the second TCI is associated with a second CDM group.

21. The network entity of claim 15, wherein the precoding matrix indicates that the DCI is for dynamic panel selection based at least in part on all layers of the precoding matrix including precoders for one or more antenna indices of one of the first antenna index set or the second antenna index set and not including precoders for one or more antenna indices of the other of the first antenna index set or the second antenna index set.

22. The network entity of claim 12, wherein the first TCI or the second TCI is associated with a code division multiplexing group.

23. A user equipment (UE) for wireless communication, comprising: one or more memories; as well as one or more processors coupled to the one or more memories, the one or more processors configured to cause the UE to: Receiving downlink control information (DCI), the DCI indicating a first beam of a first antenna index set and a second beam of a second antenna index set, wherein the first antenna index set and the second antenna index set identify a physical uplink shared channel (PUSCH) associated with multiple SRS resources of multiple sounding reference signal (SRS) resource sets; and An uplink transmission is sent based at least in part on the DCI.

24. The UE according to claim 23, wherein the PUSCH antenna port identifies the SRS antenna port according to a mapping of PUSCH antenna port to SRS antenna port.

25. The UE of claim 23, wherein the one or more processors for sending an uplink transmission based at least in part on the DCI are configured to send the uplink transmission using the first beam and the second beam.

26. The UE of claim 23, wherein the uplink transmission is a multi-panel uplink transmission.

27. A network entity for wireless communication, comprising: one or more memories; as well as one or more processors coupled to the one or more memories, the one or more processors configured to cause the network entity to: Sending, for a user equipment (UE), downlink control information (DCI), where the DCI indicates a first beam of a first antenna index set and a second beam of a second antenna index set, wherein the first antenna index set and the second antenna index set identify a physical uplink shared channel (PUSCH) associated with multiple SRS resources of multiple sounding reference signal (SRS) resource sets; and An uplink transmission is received for the UE based at least in part on the DCI.

28. The network entity of claim 27, wherein the PUSCH antenna port identifies the SRS antenna port according to a mapping of PUSCH antenna ports to SRS antenna ports.

29. The network entity of claim 27, wherein the one or more processors for receiving an uplink transmission for the UE based at least in part on the DCI are configured to receive the uplink transmission via the first beam or the second beam.

30. The network entity of claim 27, wherein the uplink transmission is a multi-panel uplink transmission.

31. A user equipment (UE) for wireless communication, comprising: means for receiving downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a demodulation reference signal (DMRS) antenna port set, wherein the first TCI is associated with a first antenna index set of the DMRS antenna port set, and the second TCI is associated with a second antenna index set of the DMRS antenna port set; as well as Means for sending an uplink transmission based at least in part on the DCI.

32. A method of wireless communication performed by a user equipment (UE), comprising: receiving downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a demodulation reference signal (DMRS) antenna port set, wherein the first TCI indicates a first beam and is associated with a first antenna index set of the DMRS antenna port set, and the second TCI indicates a second beam and is associated with a second antenna index set of the DMRS antenna port set; as well as An uplink transmission is sent based at least in part on the DCI.

33. The method of claim 32, wherein the first antenna index set and the second antenna index set identify physical uplink shared channel antenna ports or sounding reference signal (SRS) antenna ports.

34. The method of claim 33, wherein the SRS antenna port is associated with a single SRS resource of an SRS resource set, multiple SRS resources of a single SRS resource set, or multiple SRS resources of multiple SRS resource sets.

35. The method of claim 32, wherein the DCI further indicates a precoding matrix.

36. The method of claim 35, wherein the layers of the precoding matrix are mapped to the DMRS antenna port sets according to an ordering of the DMRS antenna port sets.

37. The method of claim 35, wherein the precoding matrix indicates that the DCI is for joint transmission based at least in part on a layer of the precoding matrix comprising precoders for one or more antenna indices of the first antenna index set and one or more antenna indices of the second antenna index set.

38. The method of claim 32, wherein the first TCI and the second TCI are associated with the same code division multiplexing group.

39. The method of claim 35 , wherein the precoding matrix indicates that the DCI is for non-coherent joint transmission based at least in part on a first layer of the precoding matrix and a second layer of the precoding matrix, wherein the first layer includes a precoder for one or more antenna indices of the first antenna index set and does not include a precoder for one or more antenna indices of the second antenna index set, and the second layer includes a precoder for one or more antenna indices of the second antenna index set and does not include a precoder for one or more antenna indices of the first antenna index set.

40. The method of claim 32, wherein the first TCI is associated with a first code division multiplexing (CDM) group, and the second TCI is associated with a second CDM group.

41. The method of claim 35, wherein the precoding matrix indicates that the DCI is for dynamic panel selection based at least in part on all layers of the precoding matrix including precoders for one or more antenna indices for one of the first antenna index set or the second antenna index set and not including precoders for one or more antenna indices for the other of the first antenna index set or the second antenna index set.

42. The method of claim 32, wherein the first TCI or the second TCI is associated with a code division multiplexing group.

43. A non-transitory computer-readable medium having stored thereon one or more instructions executable by one or more processors to: receiving downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a demodulation reference signal (DMRS) antenna port set, wherein the first TCI is associated with a first antenna index set of the DMRS antenna port set, and the second TCI is associated with a second antenna index set of the DMRS antenna port set; and An uplink transmission is sent based at least in part on the DCI.

44. A network entity for wireless communication, comprising: means for transmitting downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a demodulation reference signal (DMRS) antenna port set, wherein the first TCI is associated with a first antenna index set of the DMRS antenna port set, and the second TCI is associated with a second antenna index set of the DMRS antenna port set; as well as Means for receiving an uplink transmission from a user equipment (UE) based at least in part on the DCI.

45. A method of wireless communication performed by a network entity, comprising: transmitting downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a demodulation reference signal (DMRS) antenna port set, wherein the first TCI is associated with a first antenna index set of the DMRS antenna port set, and the second TCI is associated with a second antenna index set of the DMRS antenna port set; as well as An uplink transmission is received from a user equipment (UE) based at least in part on the DCI.

46. ​​The method of claim 45, wherein the first antenna index set and the second antenna index set identify physical uplink shared channel antenna ports or sounding reference signal (SRS) antenna ports.

47. The method of claim 46, wherein the SRS antenna port is associated with a single SRS resource of an SRS resource set, multiple SRS resources of a single SRS resource set, or multiple SRS resources of multiple SRS resource sets.

48. The method of claim 45, wherein the DCI further indicates a precoding matrix.

49. The method of claim 48, wherein the layers of the precoding matrix are mapped to the DMRS antenna port sets according to an ordering of the DMRS antenna port sets.

50. The method of claim 48, wherein the precoding matrix indicates that the DCI is for joint transmission based at least in part on a layer of the precoding matrix including precoders for one or more antenna indices of the first antenna index set and one or more antenna indices of the second antenna index set.

51. The method of claim 45, wherein the first TCI and the second TCI are associated with the same code division multiplexing group.

52. The method of claim 48, wherein the precoding matrix indicates that the DCI is for non-coherent joint transmission based at least in part on a first layer of the precoding matrix and a second layer of the precoding matrix, wherein the first layer includes a precoder for one or more antenna indices of the first antenna index set and does not include a precoder for one or more antenna indices of the second antenna index set, and the second layer includes a precoder for one or more antenna indices of the second antenna index set and does not include a precoder for one or more antenna indices of the first antenna index set.

53. The method of claim 45, wherein the first TCI is associated with a first code division multiplexing (CDM) group, and the second TCI is associated with a second CDM group.

54. The method of claim 48, wherein the precoding matrix indicates that the DCI is for dynamic panel selection based at least in part on all layers of the precoding matrix including precoders for one or more antenna indices for one of the first antenna index set or the second antenna index set and not including precoders for one or more antenna indices for the other of the first antenna index set or the second antenna index set.

55. The method of claim 45, wherein the first TCI or the second TCI is associated with a code division multiplexing group.

56. A non-transitory computer-readable medium having stored thereon one or more instructions executable by one or more processors to: Sending downlink control information (DCI) indicating a first transmission configuration indicator (TCI), a second TCI, and a demodulation reference signal (DMRS) antenna port set, wherein the first TCI is associated with a first antenna index set of the DMRS antenna port set, and the second TCI is associated with a second antenna index set of the DMRS antenna port set; and An uplink transmission is received from a user equipment (UE) based at least in part on the DCI.

57. A user equipment (UE) for wireless communication, comprising: means for receiving downlink control information (DCI), the DCI indicating a first beam of a first antenna index set and a second beam of a second antenna index set, wherein the first antenna index set and the second antenna index set identify a physical uplink shared channel (PUSCH) associated with a plurality of SRS resources of a plurality of sounding reference signal (SRS) resource sets; as well as Means for sending an uplink transmission based at least in part on the DCI.

58. A method of wireless communication performed by a user equipment (UE), comprising: Receiving downlink control information (DCI), the DCI indicating a first beam of a first antenna index set and a second beam of a second antenna index set, wherein the first antenna index set and the second antenna index set identify a physical uplink shared channel (PUSCH) associated with multiple SRS resources of multiple sounding reference signal (SRS) resource sets; and An uplink transmission is sent based at least in part on the DCI.

59. The method of claim 58, wherein the PUSCH antenna port identifies the SRS antenna port according to a mapping of PUSCH antenna ports to SRS antenna ports.

60. The method of claim 58, wherein the sending an uplink transmission based at least in part on the DCI comprises sending the uplink transmission using the first beam and the second beam.

61. The method of claim 58, wherein the uplink transmission is a multi-panel uplink transmission.

62. A non-transitory computer-readable medium having stored thereon one or more instructions executable by one or more processors to: Receiving downlink control information (DCI), the DCI indicating a first beam of a first antenna index set and a second beam of a second antenna index set, wherein the first antenna index set and the second antenna index set identify a physical uplink shared channel (PUSCH) associated with multiple SRS resources of multiple sounding reference signal (SRS) resource sets; and An uplink transmission is sent based at least in part on the DCI.

63. A network entity for wireless communication, comprising: A component for sending downlink control information (DCI) to a user equipment (UE), wherein the DCI indicates a first beam of a first antenna index set and a second beam of a second antenna index set, wherein the first antenna index set and the second antenna index set identify a physical uplink shared channel (PUSCH) associated with multiple SRS resources of multiple sounding reference signal (SRS) resource sets; as well as Means for receiving an uplink transmission for the UE based at least in part on the DCI.

64. A method of wireless communication performed by a network entity, comprising: Sending, for a user equipment (UE), downlink control information (DCI), where the DCI indicates a first beam of a first antenna index set and a second beam of a second antenna index set, wherein the first antenna index set and the second antenna index set identify a physical uplink shared channel (PUSCH) associated with multiple SRS resources of multiple sounding reference signal (SRS) resource sets; and An uplink transmission is received for the UE based at least in part on the DCI.

65. The method of claim 64, wherein the PUSCH antenna port identifies the SRS antenna port according to a mapping of PUSCH antenna ports to SRS antenna ports.

66. The method of claim 64, wherein the receiving an uplink transmission for the UE based at least in part on the DCI comprises receiving the uplink transmission via the first beam or the second beam.

67. The method of claim 64, wherein the uplink transmission is a multi-panel uplink transmission.

68. A non-transitory computer-readable medium having stored thereon one or more instructions executable by one or more processors to: Sending, for a user equipment (UE), downlink control information (DCI), where the DCI indicates a first beam of a first antenna index set and a second beam of a second antenna index set, wherein the first antenna index set and the second antenna index set identify a physical uplink shared channel (PUSCH) associated with multiple SRS resources of multiple sounding reference signal (SRS) resource sets; and An uplink transmission is received for the UE based at least in part on the DCI.

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