Apparatus and method for spatial multiplexing uplink transmission associated with a sounding reference signal resource set scheduled by a downlink control information format

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a sounding reference signal (SRS) configuration that indicates a first SRS resource set including (I) SRS resources and a second SRS resource set including (II) SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmissions scheduled by a second downlink control information (DCI) format. The UE may transmit an uplink transmission scheduled using the second DCI format, the uplink transmission being at least partially based on the SRS configuration. Numerous other aspects are described.

Description

[0001] Cross - Reference to Related Applications

[0002] This patent application claims the priority of U.S. Non - Provisional Patent Application No. 17 / 647,918, filed on January 13, 2022, entitled "TECHNIQUES FOR SPATIAL DIVISION MULTIPLEXED UPLINK TRANSMISSIONS ASSOCIATED WITH SOUNDING REFERENCE SIGNAL RESOURCE SETS SCHEDULED BY A DOWNLINK CONTROL INFORMATION FORMAT", and assigned to the assignee of the present application. The disclosure of the prior application is considered to be a part of this patent application and is incorporated herein by reference. Field of the Disclosure

[0003] Aspects of the present disclosure generally relate to wireless communication and relate to techniques and apparatus for spatial division multiplexing (SDM) uplink transmissions associated with sounding reference signal (SRS) resource sets scheduled by downlink control information (DCI) formats.

[0004] Description of Related Art

[0005] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ multiple access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power, etc.). Examples of such multiple access techniques 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 / Advanced LTE is an enhanced collection of the Universal Mobile Telecommunications System (UMTS) mobile standards promulgated by the Third Generation Partnership Project (3GPP).

[0006] A wireless network may include one or more base stations that support communication for a user equipment (UE) or multiple UEs. The UE may communicate with the base station via downlink communication and uplink communication. "Downlink" (or "DL") refers to the communication link from the base station to the UE, and "uplink" (or "UL") refers to the communication link from the UE to the base station.

[0007] The above multi-access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at the urban, national, regional, and / or global levels. New Radio (NR), which may be referred to as 5G, is an enhanced set of LTE mobile standards promulgated by 3GPP. NR is designed to better integrate with other open standards by improving spectral efficiency, reducing costs, enhancing services, leveraging new spectrums, and using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) (CP-OFDM) on the downlink, and CP-OFDM and / or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, Multiple-Input Multiple-Output (MIMO) antenna technology, and carrier aggregation, so as to better support mobile broadband Internet access. With the continuous increase in the demand for mobile broadband access, further improvements to LTE, NR, and other radio access technologies are still useful. Summary of the Invention

[0008] Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include receiving a sounding reference signal (SRS) configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmissions scheduled by a second downlink control information (DCI) format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, wherein the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmissions scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the SRS resources in the fourth SRS resource set are configured for spatial division multiplexing (SDM) uplink communication scheduled by the first DCI format. The method may include transmitting an uplink transmission scheduled using the second DCI format, the uplink transmission being transmitted at least in part based on the SRS configuration.

[0009] Some aspects described herein relate to a method of wireless communication performed by a base station. The method may include transmitting an SRS configuration that indicates a first SRS resource set including a first SRS resource set of SRS resources and including a second SRS resource set of SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, and wherein the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format. The method may include receiving an uplink transmission scheduled using the second DCI format, the uplink transmission being received at least in part based on the SRS configuration.

[0010] Some aspects described herein relate to a UE for wireless communication. The user equipment may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, and wherein the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the One resource is configured for SDM uplink communication scheduled by the first DCI format. The one or more processors may be configured to transmit an uplink transmission scheduled using the second DCI format, the uplink transmission being transmitted at least in part based on the SRS configuration.

[0011] Some aspects described herein relate to a base station for wireless communication. The base station may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to transmit an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, wherein the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format. The one or more processors may be configured to receive an uplink transmission scheduled using the second DCI format, the uplink transmission being received at least in part based on the SRS configuration.

[0012] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication to be performed by a UE. When executed by one or more processors of the UE, the set of instructions may cause the UE to receive an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, wherein the SRS resources in the second SRS resource set are from including the first resources of a fourth SRS resource set of resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format. When executed by one or more processors of the UE, the instruction set may cause the UE to transmit an uplink transmission scheduled using the second DCI format, the uplink transmission being at least partially based on the SRS configuration for transmission.

[0013] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication to be executed by a base station. When executed by one or more processors of the base station, the instruction set may cause the base station to transmit an SRS configuration indicating a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, and wherein the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format. When executed by one or more processors of the base station, the instruction set may cause the base station to receive an uplink transmission scheduled using the second DCI format, the uplink transmission being at least partially based on the SRS configuration for reception.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving an SRS configuration indicating a first SRS resource set including SRS resources and a second SRS resource set including A second SRS resource set of SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, and the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format. The apparatus may include means for transmitting an uplink transmission scheduled using the second DCI format, the uplink transmission being transmitted at least in part based on an SRS configuration.

[0015] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for transmitting an SRS configuration indicating a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, and the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format. The apparatus may include means for receiving an uplink transmission scheduled using the second DCI format, the uplink transmission being received at least in part based on an SRS configuration.

[0016] Aspects of the present disclosure generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems, as fully described herein with reference to the accompanying drawings and the specification and as illustrated in the accompanying drawings and the specification.

[0017] The features and technical advantages of examples in accordance with the present disclosure have been outlined above rather broadly in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the features (both their organization and method of operation) of the concepts disclosed herein, as well as the associated advantages, will be better understood from the following description. Each of the accompanying drawings is provided for the purpose of illustration and description and is not a definition of the limits of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] To obtain a more particular description of the inventive subject matter briefly outlined above, reference may be made to the aspects, some of which are illustrated in the accompanying drawings. It is to 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, for the specification may admit to other equally effective aspects. Like reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 is a diagram illustrating an example of a wireless network in accordance with the present disclosure.

[0020] Figure 2 is a diagram illustrating an example of communication between a base station and a user equipment (UE) in a wireless network in accordance with the present disclosure.

[0021] Figures 3A to 3C is a diagram in accordance with the present disclosure associated with spatial division multiplexing (SDM) uplink transmission that is associated with a sounding reference signal (SRS) resource set scheduled by a downlink control information (DCI) format.

[0022] Figure 4 and Figure 5 is a diagram illustrating an example process associated with SDM uplink transmission in accordance with the present disclosure that is associated with an SRS resource set scheduled by a DCI format.

[0023] Figure 6 and Figure 7 is a diagram of an exemplary apparatus for wireless communication in accordance with the present disclosure. DETAILED DESCRIPTION

[0024] Aspects of the present disclosure are described more fully hereinafter with reference to the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as limited to any specific structure or function presented herein. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Those skilled in the art will understand that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of the present disclosure. For example, any number of the aspects set forth herein may be used to implement an apparatus or practice a method. Additionally, the scope of the present disclosure is intended to cover such apparatus or methods practiced using other structures, functions, or combinations of structures and functions in addition to or different from the aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of a claim.

[0025] Several aspects of a telecommunications system will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in the following detailed description and are illustrated in the drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "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 particular application and design constraints imposed on the overall system.

[0026] Although terms generally associated with 5G or New Radio (NR) radio access technology (RAT) may be used herein to describe aspects, aspects of the present disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or post-5G RAT (e.g., 6G).

[0027] Figure 1FIG. 0 is a diagram illustrating an example of a wireless network 100 in accordance with the present disclosure. The wireless network 100 may be or may include elements of a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, among other examples. The wireless network 100 may include one or more base stations 110 (shown as BS110a, BS110b, BS110c, and BS110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other network entities. A base station 110 is an entity that communicates with the UE 120. A base station 110 (sometimes referred to as a BS) may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, and / or a transmission reception point (TRP). Each base station 110 may provide communication coverage for a particular geographic area. In the 3rd Generation Partnership Project (3GPP), depending on the context in which the term is used, the term "cell" may refer to the coverage area of a base station 110 and / or the base station subsystem serving that coverage area.

[0028] The base station 110 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., with a radius of several kilometers) and may allow unrestricted access by UEs 120 having a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 having a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 associated with the femto cell (e.g., UEs 120 in a closed subscriber group (CSG)). A base station 110 for a macro cell may be referred to as a macro base station. A base station 110 for a pico cell may be referred to as a pico base station. A base station 110 for a femto cell may be referred to as a femto base station or a home base station. In Figure 1 the example shown, BS110a may be a macro base station for macro cell 102a, BS110b may be a pico base station for pico cell 102b, and BS110c may be a femto base station for femto cell 102c. A base station may support one or more (e.g., three) cells.

[0029] In some examples, a cell may not necessarily be fixed, and the geographical area of the cell can move according to the location of the moving base station 110 (e.g., a mobile base station). In some examples, base stations 110 can be interconnected with each other and / or interconnected to one or more other base stations 110 or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

[0030] The wireless network 100 can include one or more relay stations. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a base station 110 or a UE 120) and transmit the transmissions of data to a downstream station (e.g., a UE 120 or a base station 110). A relay station can be a UE 120 that is capable of relaying transmissions for other UEs 120. In Figure 1 the example shown, BS110d (e.g., a relay base station) can communicate with BS110a (e.g., a macro base station) and UE 120d to facilitate communication between BS110a and UE 120d. Base stations 110 that perform relay communication can be referred to as relay stations, relay base stations, relays, and so on.

[0031] The wireless network 100 can be a heterogeneous network that includes different types of base stations 110, such as macro base stations, pico base stations, femto base stations, relay base stations, etc. These different types of base stations 110 can have different transmission power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro base station can have a high transmission power level (e.g., 5 watts to 40 watts), while pico base stations, femto base stations, and relay base stations can have lower transmission power levels (e.g., 0.1 watt to 2 watts).

[0032] The network controller 130 can be coupled to or communicate with a group of base stations 110 and can provide coordination and control for these base stations 110. The network controller 130 can communicate with the base stations 110 via a backhaul communication link. The base stations 110 can communicate directly with each other or indirectly via wireless or wired backhaul communication links.

[0033] UE 120 can be dispersed throughout the wireless network 100, and each UE 120 can be stationary or mobile. UE 120 can include, for example, access terminals, terminals, mobile stations, and / or user units. UE 120 can be a cellular phone (e.g., a smart phone), 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 device, a camera, a gaming device, a netbook, a smartbook, a ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio, etc.), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0034] Some UEs 120 can be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs can include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which can communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 can be considered Internet of Things (IoT) devices and / or can be implemented as narrowband IoT (NB-IoT) devices. Some UEs 120 can be considered customer premises equipment. UE 120 can be included within a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component can be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., a memory) can be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0035] Generally, any number of wireless networks 100 can be deployed in a given geographical area. Each wireless network 100 can support a specific RAT and can operate on one or more frequencies. The RAT can be referred to as a radio technology, an air interface, etc. The frequency can be referred to as a carrier, a frequency channel, etc. Each frequency in a given geographical area can support a single RAT to avoid interference between wireless networks of different RATs. In some cases, an NR or 5G RAT network can be deployed.

[0036] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using the base station 110 as an intermediate device to communicate with each other). For example, the UE 120 may use peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, or vehicle-to-pedestrian (V2P) protocol), and / or a mesh network to communicate. In such examples, the UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0037] Devices of the wireless network 100 may communicate using the electromagnetic spectrum, which may be subdivided into various categories, frequency bands, channels, etc. based on frequency or wavelength. For example, devices of the wireless network 100 may communicate using one or more operating frequency bands. In 5G NR, two initial operating frequency bands have been identified as frequency range designations FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, in various documents and articles, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band. Regarding FR2, a similar naming issue sometimes occurs, which is typically (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) identified by the International Telecommunication Union (ITU) as the "millimeter wave" band.

[0038] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified operating frequency bands for these mid-band frequencies as frequency range designations FR3 (7.125 GHz - 24.25 GHz). Bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend the features of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating frequency bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz - 71 GHz), FR4 (52.6 GHz - 114.25 GHz), and FR5 (114.25 GHz - 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0039] In view of the above examples, unless otherwise explicitly stated, it should be understood that if terms such as "sub-6 GHz" are used herein, such terms can broadly represent frequencies that can be lower than 6 GHz, can be within FR1, or can include intermediate band frequencies. Additionally, unless otherwise explicitly stated, it should be understood that if terms such as "millimeter wave" are used herein, such terms can broadly represent frequencies that can include intermediate band frequencies, can be within FR2, FR4, FR4-a, or FR4-1 and / or FR5, or can be within the EHF band. It is expected that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) can be modified, and the techniques described herein apply to those modified frequency ranges.

[0040] In some aspects, the UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmissions scheduled by a second DCI format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, wherein the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmissions scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format; uplink transmissions scheduled using the second DCI format can be transmitted, and the uplink transmissions are transmitted at least in part based on the SRS configuration. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0041] 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 transmit an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including The second SRS resource set of SRS resources, the first SRS resource set and the second SRS resource set are configured for uplink transmission scheduled by the second DCI format, where the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, and the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, where the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by the first DCI format, and where the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format; and is capable of receiving uplink transmission scheduled using the second DCI format, the uplink transmission being received at least in part based on the SRS configuration. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0042] As indicated above, Figure 1 is provided as an example. Other examples may be different from those described with respect to Figure 1 described.

[0043] Figure 2 is a diagram showing an example 200 of communication between the base station 110 and the UE 120 in the wireless network 100 according to the present disclosure. The base station 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1).

[0044] At base station 110, transmission processor 220 may receive data destined for UE 120 (or a set of UEs 120) from data source 212. Transmission processor 220 may select one or more modulation and coding schemes (MCSs) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. Base station 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120 and provide data symbols for the UE 120. Transmission processor 220 may 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. Transmission processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRSs) or demodulation reference signals (DMRSs)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). Transmission (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a through 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of a modem 232. Each modem 232 may process the corresponding output symbol stream (e.g., for OFDM) using the corresponding modulator component to obtain an output sample stream. Each modem 232 may further process the output sample stream (e.g., convert to analog, amplify, filter, and / or up-convert) using the corresponding modulator component to obtain a downlink signal. Modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234t).

[0045] At the UE 120, a set of antennas 252 (shown as antennas 252a through 252r) may receive downlink signals from the base station 110 and / or other base stations 110, and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use the corresponding demodulator component to condition (e.g., filter, amplify, down-convert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use the demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. The MIMO detector 256 may obtain the received symbols from the modems 254, may perform MIMO detection on the received symbols when applicable, and may provide the detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide the decoded data for the UE 120 to the data sink 260, and may provide the decoded control information and system information to the 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 reference signal received power (RSRP) parameters, received signal strength indicator (RSSI) parameters, reference signal received quality (RSRQ) parameters, and / or CQI parameters, etc. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0046] 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.

[0047] One or more antennas (e.g., antennas 234a through 234t and / or antennas 252a through 252r) may include one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc., or may be included in one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. An antenna panel, an antenna group, a set of antenna elements, and / or an antenna array may include one or more antenna elements (in a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, and / or one or more antenna elements coupled to one or more transmission and / or reception components (such as Figure 2 one or more components in

[0048] On the uplink, at the UE 120, the transmission processor 264 can receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmission processor 264 can generate reference symbols for one or more reference signals. The symbols from the transmission processor 264 can be pre-coded by the TX MIMO processor 266 if applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some examples, the modem 254 of the UE 120 can include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver can include any combination of the antenna 252, the modem 254, the MIMO detector 256, the receiving processor 258, the transmission processor 264, and / or the TX MIMO processor 266. The transceiver can be used by a processor (e.g., the controller / processor 280) and the memory 282 to perform aspects of any of the methods described herein (e.g., with reference to Figures 3A to 7 ).

[0049] At the base station 110, the uplink signals from the UE 120 and / or other UEs can be received by the antenna 234, processed by the modem 232 (e.g., the demodulator component of the modem 232 shown as DEMOD), detected by the MIMO detector 236 if applicable, and further processed by the receiving processor 238 to obtain the decoded data and control information transmitted by the UE 120. The receiving processor 238 can provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The base station 110 can include a communication unit 244 and can communicate with the network controller 130 via the communication unit 244. The base station 110 can include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communication. In some examples, the modem 232 of the base station 110 can include a modulator and a demodulator. In some examples, the base station 110 includes a transceiver. The transceiver can include any combination of the antenna 234, the modem 232, the MIMO detector 236, the receiving processor 238, the transmission processor 220, and / or the TX MIMO processor 230. The transceiver can be used by a processor (e.g., the controller / processor 240) and the memory 242 to perform aspects of any of the methods described herein (e.g., with reference to Figures 3A to 7 ).

[0050] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component of may perform one or more techniques associated with SDM uplink transmissions associated with a set of SRS resources scheduled by a DCI format, as detailed 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 in may perform or direct, for example Figure 4 the operation of process 400, Figure 5 the operation of process 500, and / or other processes as described herein. The memories 242 and 282 may store data and program code for the base station 110 and the UE 120, respectively. In some examples, the memory 242 and / or the memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication (e.g., code and / or program code). For example, when the one or more instructions are executed (e.g., directly executed, or after compilation, transformation, and / or interpretation) by one or more processors of the base station 110 and / or the UE 120, the one or more processors, the UE 120, and / or the base station 110 can perform or direct, for example Figure 4 the operation of process 400, Figure 5 the operation of process 500, and / or other processes as described herein. In some examples, executing the instructions may include running the instructions, transforming the instructions, compiling the instructions, and / or interpreting the instructions, etc.

[0051] In some aspects, the UE 120 may include means for receiving an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmissions scheduled by a second DCI format, wherein of the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, and wherein of the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmissions scheduled by a first DCI format, and wherein of the SRS resources in the third SRS resource set and Resources are configured for SDM uplink communication scheduled by a first DCI format; components for transmitting an uplink transmission scheduled by a second DCI format, the uplink transmission being at least partially transmitted based on an SRS configuration; and so on. In some aspects, such components may include one or more components of the UE 120 described in conjunction with Figure 2 such as controller / processor 280, transmission processor 264, TX MIMO processor 266, antenna 252, modem 254, MIMO detector 256, receive processor 258, etc.

[0052] In some aspects, the base station 110 may include components for transmitting an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for an uplink transmission scheduled by a second DCI format, where SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, where SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, where the third SRS resource set and the fourth SRS resource set are configured for an uplink transmission scheduled by a first DCI format, and where SRS resources in the third SRS resource set and resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by a first DCI format; components for receiving an uplink transmission scheduled by a second DCI format, the uplink transmission being at least partially received based on an SRS configuration; and so on. In some aspects, such components may include one or more components of the base station 110 described in conjunction with Figure 2 such as antenna 234, MIMO detector 236, receive processor 238, controller / processor 240, transmission processor 220, TX MIMO processor 230, modem 232, antenna 234, etc.

[0053] Although Figure 2 the boxes in are shown as different components, the functions described above for these boxes may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functions described with respect to transmission processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by or under the control of controller / processor 280.

[0054] As indicated above, Figure 2 is provided as an example. Other examples may be different from those Figure 2 described.

[0055] A wireless communication system may support codebook-based uplink transmissions (e.g., codebook-based Physical Uplink Shared Channel (PUSCH) transmissions) and non-codebook-based uplink transmissions (e.g., non-codebook-based PUSCH transmissions). For codebook-based uplink transmissions, a UE may be configured with a sounding reference signal (SRS) resource set where the “usage” is set to “codebook”. In general, up to four SRS resources within the SRS resource set may be configured for the UE, where each SRS resource is configured (e.g., via radio resource control (RRC) signaling) with a plurality of ports (e.g., nrofSRS-Ports). An SRS resource indicator (SRI) field included in downlink control information (DCI) that schedules an uplink transmission indicates an SRS resource. Here, the number of ports configured for the indicated SRS resource determines the number of antenna ports used for the uplink transmission, and the uplink transmission is transmitted through the same spatial domain filter (i.e., uplink beam) as the indicated SRS resource. The number of layers (i.e., rank) and transmission precoding matrix indicator (TPMI) for the scheduled uplink transmission are determined according to another DCI field. For non-codebook-based uplink transmissions, a UE may be configured with an SRS resource set where the “usage” is set to “non-codebook”. In general, up to four SRS resources within the SRS resource set may be configured for the UE, where each SRS resource has one port. The SRI field in the DCI that schedules an uplink transmission indicates one or more SRS resources. Here, the number of the indicated SRS resources determines the rank of the scheduled uplink transmission, and the uplink transmission is transmitted through the same precoder and spatial domain filter (i.e., uplink beam) as the indicated SRS resources. It is noted that for both codebook-based uplink transmissions and non-codebook-based uplink transmissions, the size of the SRI field is a function of the number of SRS resources within the SRS resource set.

[0056] DCI format 0_2 can be used to schedule uplink transmissions (e.g., PUSCH transmissions) in some wireless communication systems. One purpose of DCI format 0_2 is to reduce the size of the DCI (e.g., compared to, e.g., DCI format 0_1) by reducing the number of bits required for each DCI field via RRC configuration. Notably, the SRS resource set for codebook-based and / or non-codebook-based uplink transmissions can be configured separately for the uplink transmissions scheduled by DCI format 0_2 via RRC parameters (e.g., srs-ResourceSetToAddModListDCI-0-2, where the RRC parameter srs-ResourceSetToAddModList is used for DCI format 0_1). For codebook-based uplink transmissions, only one SRS resource set with the usage set to "codebook" can be configured by the RRC parameter, and for non-codebook-based uplink transmissions, only one SRS resource set with the usage set to "non-codebook" can be configured by the RRC parameter. Here, a relatively small number of SRS resources (N SRS,0_2 ) within the SRS resource set can be configured, which reduces the SRI bit width. However, the N SRS,0_2 SRS resources within the SRS resource set for DCI format 0_2 need to be the first N SRS,0_2 SRS resources within the SRS resource set for DCI format 0_1 to ensure that the UE complexity does not increase. That is, to avoid an increase in complexity at the UE, the N SRS,0_2 SRS resources within the SRS resource set for DCI format 0_2 are a subset of the SRS resources in the SRS resource set configured for DCI format 0_1.

[0057] Additionally, some wireless communication systems support uplink repetition (e.g., PUSCH repetition) based on a single DCI in a time-division multiplexing (TDM) manner, where the transmission parameters (e.g., beam / space relationship, power control, precoding, etc.) vary between uplink repetition sets. For example, the uplink repetition scheduled by a single DCI can belong to two sets, and each uplink repetition set has a corresponding set of transmission parameters. To achieve this, two repetition sets and thus two sets of transmission parameters correspond to two SRS resource sets. In operation, the DCI indicates the two sets of transmission parameters (e.g., for both codebook-based and non-codebook-based transmissions) via two corresponding SRI fields to enable PUSCH repetition based on a single DCI in a TDM manner.

[0058] In addition, some wireless communication systems support multi-transmission / reception point (mTRP) uplink repetition schemes for both codebook-based and non-codebook-based uplink transmissions. In such schemes, the SRS resource sets applicable to mTRP uplink transmissions scheduled by DCI format 0_1 or DCI format 0_2 are defined by entries of a set of higher layer parameters (srs-ResourceSetToAddModList and srs-ResourceSetToAddModListDCI-0-2), respectively. A given SRS resource set configured by the higher layer parameters associated with DCI format 0_2 (e.g., srs-ResourceSetToAddModListDCI-0-2) consists of the first N SRS resources in a given SRS resource set configured by the higher layer parameters associated with DCI format 0_1 (e.g., srs-ResourceSetToAddModList). In operation, the presence of a DCI field for dynamic switching is determined separately for DCI format 0_1 and DCI format 0_2 (e.g., based on whether two SRS resource sets are configured for that DCI format). Additionally, for mTRP uplink repetition scheduled by DCI format 0_2, the value of N in the two SRS resource sets configured by the higher layer parameters associated with DCI format 0_2 should be the same. Thus, for mTRP uplink repetition, when two SRS resource sets are configured with parameters associated with DCI format 0_2 (e.g., srs-ResourceSetToAddModListDCI-0-2) and only one SRS resource set is configured with parameters associated with DCI format 0_1 (e.g., srs-ResourceSetToAddModList), the first SRS resource set configured by the parameters associated with DCI format 0_2 consists of the first N SRS resources in the SRS resource set configured by the parameters associated with DCI format 0_1, and the second SRS resource set configured by the parameters associated with DCI format 0_2 does not have such a condition regarding SRS resources. When one SRS resource set is configured with parameters associated with DCI format 0_2 and two SRS resource sets are configured with parameters associated with DCI format 0_1, the SRS resource set configured by the parameters associated with DCI format 0_2 consists of the first N SRS resources in the first SRS resource set configured by the parameters associated with DCI format 0_1. SRS,0_2 The first N SRS resources in a given SRS resource set configured by the higher layer parameters associated with DCI format 0_1 (e.g., srs-ResourceSetToAddModList). In operation, the presence of a DCI field for dynamic switching is determined separately for DCI format 0_1 and DCI format 0_2 (e.g., based on whether two SRS resource sets are configured for that DCI format). Additionally, for mTRP uplink repetition scheduled by DCI format 0_2, the value of N in the two SRS resource sets configured by the higher layer parameters associated with DCI format 0_2 should be the same. Thus, for mTRP uplink repetition, when two SRS resource sets are configured with parameters associated with DCI format 0_2 (e.g., srs-ResourceSetToAddModListDCI-0-2) and only one SRS resource set is configured with parameters associated with DCI format 0_1 (e.g., srs-ResourceSetToAddModList), the first SRS resource set configured by the parameters associated with DCI format 0_2 consists of the first N SRS resources in the SRS resource set configured by the parameters associated with DCI format 0_1, and the second SRS resource set configured by the parameters associated with DCI format 0_2 does not have such a condition regarding SRS resources. When one SRS resource set is configured with parameters associated with DCI format 0_2 and two SRS resource sets are configured with parameters associated with DCI format 0_1, the SRS resource set configured by the parameters associated with DCI format 0_2 consists of the first N SRS resources in the first SRS resource set configured by the parameters associated with DCI format 0_1. SRS,0_2 The value of N in the two SRS resource sets configured by the higher layer parameters associated with DCI format 0_2 should be the same. Thus, for mTRP uplink repetition, when two SRS resource sets are configured with parameters associated with DCI format 0_2 (e.g., srs-ResourceSetToAddModListDCI-0-2) and only one SRS resource set is configured with parameters associated with DCI format 0_1 (e.g., srs-ResourceSetToAddModList), the first SRS resource set configured by the parameters associated with DCI format 0_2 consists of the first N SRS resources in the SRS resource set configured by the parameters associated with DCI format 0_1, and the second SRS resource set configured by the parameters associated with DCI format 0_2 does not have such a condition regarding SRS resources. When one SRS resource set is configured with parameters associated with DCI format 0_2 and two SRS resource sets are configured with parameters associated with DCI format 0_1, the SRS resource set configured by the parameters associated with DCI format 0_2 consists of the first N SRS resources in the first SRS resource set configured by the parameters associated with DCI format 0_1. SRS,0_2 The first N SRS resources in the SRS resource set configured by the parameters associated with DCI format 0_1, and the second SRS resource set configured by the parameters associated with DCI format 0_2 does not have such a condition regarding SRS resources. When one SRS resource set is configured with parameters associated with DCI format 0_2 and two SRS resource sets are configured with parameters associated with DCI format 0_1, the SRS resource set configured by the parameters associated with DCI format 0_2 consists of the first N SRS resources in the first SRS resource set configured by the parameters associated with DCI format 0_1. SRS,0_2 The first N SRS resources in the first SRS resource set configured by the parameters associated with DCI format 0_1.

[0059] Additionally, in some wireless communication systems, spatial division multiplexing (SDM) for uplink transmissions (e.g., PUSCH transmissions) can be specified. Here, different sets of layers can have different transmission parameters (e.g., different beams, different sets of power control parameters, different TPMI, etc.), and various rank combinations (e.g., 1+1, 1+2, 2+1, or 2+2) can be supported. To optimize the size (e.g., bit width) of the SRI, some constraints should be imposed on the SRS resource indication. In one example, a first SRI can be allowed to be indicated from the first number of SRS resources in the first SRS resource set, and a second SRI can be allowed to be indicated from the number of SRS resources in the second SRS resource set. In another example, a first SRI can be allowed to indicate at most number of SRS resources from the first SRS resource set, and a second SRI can be allowed to indicate at most number of SRS resources from the second SRS resource set.

[0060] It should be noted that the details of the operation of SDM for uplink transmissions scheduled using DCI format 0_2 need to be defined. More specifically, constraints on the number of SRS resources within each of the two SRS resource sets for DCI format 0_2 need to be defined for SDM uplink transmissions scheduled using DCI format 0_2.

[0061] Some of the techniques and apparatuses described herein implement SDM uplink transmissions associated with SRS resource sets scheduled by DCI format 0_2. In some aspects, a base station can transmit and a UE can receive an SRS configuration that indicates a first SRS resource set including number of SRS resources and a second SRS resource set including number of SRS resources, where the first SRS resource set and the second SRS resource set are configured for uplink transmissions scheduled by DCI format 0_2. Here, the number of SRS resources in the first SRS resource set can be the first number of resources from a third SRS resource set including number of resources, and the number of SRS resources in the second SRS resource set can be the first number of resources from a fourth SRS resource set including number of resources. The third SRS resource set and the fourth SRS resource set are configured for uplink transmissions scheduled by DCI format 0_1, and the number of SRS resources in the third SRS resource set and the Resources are configured for SDM uplink communication scheduled by DCI format 0_1. In some aspects, the UE may transmit and the base station may receive uplink transmissions scheduled using DCI format 0_2, where the uplink transmissions are transmitted at least in part based on the SRS configuration. Additional details are provided below.

[0062] Thus, operation of SDM for uplink transmissions scheduled using DCI format 0_2 can be supported. More specifically, constraints on the number of SRS resources within each of two SRS resource sets for DCI format 0_2 are defined to enable SDM uplink transmissions scheduled using DCI format 0_2.

[0063] Figures 3A to 3C is a diagram associated with SDM uplink transmission according to the present disclosure, the SDM uplink transmission being associated with an SRS resource set scheduled by a DCI format such as DCI format 0_2. As Figure 3A shown, example 300 includes communication between UE 120 and base station 110. In some aspects, base station 110 and UE 120 may be included in a wireless network such as wireless network 100. Base station 110 and UE 120 may communicate via a radio access link (which may include an uplink and a downlink).

[0064] As Figure 3A shown by reference 305, base station 110 may transmit and UE 120 may receive an SRS configuration indicating a first SRS resource set and a second SRS resource set. In some aspects, the first SRS resource set includes SRS resources (e.g., including at least one SRS resource) and the second SRS resource set includes SRS resources (e.g., including at least one SRS resource). In some aspects, as Figure 3A indicated, the first SRS resource set and the second SRS resource set are configured for uplink transmissions scheduled by a second DCI format (such as DCI format 0_2). That is, base station 110 may transmit and UE 120 may receive a configuration of the SRS resource set to be used for uplink transmissions scheduled by DCI format 0_2 (e.g., codebook-based PUSCH transmissions, non-codebook-based PUSCH transmissions, etc.), where the number of SRS resources in the first SRS resource set and the second SRS resource set are respectively and

[0065] In some aspects, the SRS resources in the first SRS resource set are from a set including The first resources of the third SRS resource set for a resource, where the third SRS resource set is an SRS resource set configured for uplink transmission scheduled by a first DCI format such as DCI format 0_1. That is, in some aspects, within the first SRS resource set configured for DCI format 0_2 SRS resources are the first resources within an SRS resource set configured for DCI format 0_1. Thus, in some aspects, less than or equal to This means that the number of SRS resources in the first SRS resource set configured for DCI format 0_2 is less than or equal to the number of SRS resources in the SRS resource set configured for DCI format 0_1.

[0066] In some aspects, the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, where the fourth SRS resource set is another SRS resource set configured for uplink transmission scheduled by a first DCI format such as DCI format 0_1. In some aspects, equal to This means that the number of SRS resources in the SRS resource set configured for DCI format 0_2 is equal. Thus, in some aspects, the SRS resources in the second SRS resource set configured for DCI format 0_2 are the first resources within another SRS resource set associated with DCI format 0_1. In some aspects, less than or equal to This means that the number of SRS resources in the second SRS resource set for DCI format 0_2 is less than or equal to the number of SRS resources in other SRS resource sets configured for DCI format 0_1.

[0067] In some aspects, UE 120 is configured such that the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set will be used for SDM uplink communication scheduled by DCI format 0_1. That is, in some aspects, UE 120 is configured such that the SRS resources in an SRS resource set configured for DCI format 0_1 and the resources in other SRS resource sets configured for DCI format 0_1 will be used for SDM uplink communication scheduled by DCI format 0_1.

[0068] As shown in reference 310, in some aspects, DCI format 0_2 may be used and uplink transmissions may be scheduled at least in part based on the SRS configuration. For example, as Figure 3A shown therein, base station 110 may transmit and UE 120 may receive DCI with DCI format 0_2, where the DCI includes one or more SRIs. Here, each SRI among the one or more SRIs may indicate one or more SRS resources at least in part based on which uplink transmission is to be transmitted. For example, base station 110 may transmit and UE 120 may receive DCI with format 0_2 that schedules SDM PUSCH transmission, where the DCI includes a first SRI and a second SRI.

[0069] In some aspects, it is allowed that the first SRI indicates an SRS resource among a first set of SRS resources from a first SRS resource set, and it is allowed that the second SRI indicates an SRS resource among a second set of SRS resources from a second SRS resource set. In one example, the first set of SRS resources includes the first number of SRS resources in the first SRS resource set, where is and the minimum value of. That is, in some aspects, for DCI format 0_2, the first SRI may indicate only from the first number of SRS resources in the first SRS resource set. Similarly, in this example, the second set of SRS resources includes the first number of SRS resources in the second SRS resource set, where is and the minimum value of. That is, in some aspects, for DCI format 0_2, the second SRI may indicate only from the first number of SRS resources in the second SRS resource set. In another example, the first set of SRS resources includes a number of SRS resources less than or equal to and the minimum value of. That is, in some aspects, for DCI format 0_2, the first SRI may indicate at most number of SRS resources from the first SRS resource set. Similarly, in this example, the second set of SRS resources includes a number of SRS resources less than or equal to and the minimum value of. That is, in some aspects, for DCI format 0_2, the second SRI may indicate at most number of SRS resources from the second SRS resource set.

[0070] Alternatively, in some aspects, the SRS resource sets for SDM uplink transmissions scheduled by DCI format 0_1 and DCI format 0_2 can be configured separately. That is, the number of SRS resources associated with the SDM uplink transmission scheduled by DCI format 0_1 and and the number of SRS resources associated with the SDM uplink transmission scheduled by DCI format 0_2 and can be configured separately. In one example in this regard, it is allowed that the first SRI indicates SRS resources among the first SRI resources from the first SRS resource set, and it is allowed that the second SRI indicates SRS resources among the first SRI resources from the second SRS resource set. That is, in some aspects, for DCI format 0_2, the first SRI can indicate only from among the first SRS resources in the first SRS resource set (where is less than or equal to ), and the second SRI can indicate only from among the first SRS resources in the second SRS resource set (where is less than or equal to ). In another example, it is allowed that the first SRI indicates up to SRS resources in the first SRS resource set, and it is allowed that the second SRI indicates up to SRS resources in the second SRS resource set. That is, in some aspects, for DCI format 0_2, the first SRI can indicate at most SRS resources in the first SRS resource set (where is less than or equal to ), and the second SRI can indicate at most SRS resources in the second SRS resource set (where is less than or equal to ).

[0071] It should be noted that in the above aspects and examples, the size (e.g., bit width) of a given SRI field in DCI format 0_2 is less than or equal to the size of the corresponding SRI field in DCI format 0_1.

[0072] As shown in reference 315, the UE 120 may transmit and the base station 110 may receive an uplink transmission (e.g., an SDM uplink transmission) scheduled using DCI format 0_2. In some aspects, the UE 120 may transmit and the base station 110 may receive an uplink transmission that is at least partially based on an SRS configuration. For example, as described above, the base station 110 may transmit a DCI having DCI format 0_2 and including one or more SRIs. The UE 120 may receive a DCI including one or more SRIs, and the UE 120 may use one or more SRS resources indicated by the one or more SRIs to transmit an uplink transmission, as configured by the SRS configuration. In some aspects, the uplink transmission is a codebook-based transmission. In some aspects, the uplink transmission is a non-codebook-based transmission.

[0073] Figure 3B and Figure 3C are diagrams illustrating examples of SRS resource set configurations and constraints for SRI indication as described herein. In Figure 3B and Figure 3C In the example shown, one SRS resource set for an uplink transmission scheduled by DCI format 0_1 includes four SRS resources (e.g., including SRS resources 0 to 3), and another SRS resource set for an uplink transmission scheduled by DCI format 0_1 includes four SRS resources (e.g., including SRS resources 4 to 7).

[0074] In Figure 3B In the example shown, the configured SRS resource set for an SDM uplink transmission scheduled by DCI format 0_1 includes two resources (e.g., including SRS resources 0 and 1; and including SRS resources 4 and 5). In this example, the first SRS resource set configured for an uplink transmission scheduled by DCI format 0_2 includes three SRS resources (e.g., including SRS resources 0 to 2). Similarly, the second SRS resource set configured for an uplink transmission scheduled by DCI format 0_2 includes three SRS resources (e.g., including SRS resources 4 to 6). Here, the first SRI indication allowed to be transmitted in DCI format 0_2 associated with scheduling an SDM uplink transmission is from an SRS resource in the first set of SRS resources from the first SRS resource set, where the first set of SRS resources includes the first number of SRS resources in the first SRS resource set, where is and the minimum of. Here, and The minimum value in is 2, and thus the first SRI may indicate the SRS resources among the first two SRS resources (e.g., SRS resources 0 and 1) from the first SRS resource set. Additionally, a second SRI, which is allowed to be transmitted in DCI format 0_2 associated with scheduling SDM uplink transmissions, indicates the SRS resources among a second set of SRS resources from the second SRS resource set, where the second set of SRS resources includes the first is and The minimum value in. Here, and The minimum value in is 2, and thus the second SRI may indicate the SRS resources among the first two SRS resources (e.g., SRS resources 4 and 5) from the second SRS resource set.

[0075] In the example shown in Figure 3C , the configured SRS resource set for SDM uplink transmissions scheduled by DCI format 0_1 includes two resources (e.g., including SRS resources 0 and 1; and including SRS resources 4 and 5). However, in this example, the SRS resource set for SDM uplink transmissions scheduled by DCI format 0_2 is configured separately from the SRS resource set for SDM uplink transmissions scheduled by DCI format 0_1. Here, one configured SRS resource set for SDM uplink transmissions scheduled by DCI format 0_2 includes two resources (e.g., including SRS resources 0 and 1), and another configured SRS resource set for SDM uplink transmissions scheduled by DCI format 0_2 includes one resource (e.g., including SRS resource 4). Additionally, in this example, the first SRS resource set configured for uplink transmissions scheduled by DCI format 0_2 includes two SRS resources (e.g., including SRS resources 0 and 1). Similarly, the second SRS resource set configured for uplink transmissions scheduled by DCI format 0_2 includes two SRS resources (e.g., including SRS resources 4 and 5). Here, the first SRI transmitted in DCI format 0_2 associated with scheduling SDM uplink transmissions may indicate the first The SRS resources in a SRS resource, and thus the first SRI can be indicated from two resources (e.g., SRS resources 0 and 1) in the first SRS resource set. Additionally, the second SRI transmitted in DCI format 0_2 associated with scheduling SDM uplink transmission can indicate the SRS resource from the first SRS resources in the SRS resources, and thus the second SRI can indicate the first SRS resource in the second SRS resource set (e.g., SRS resource 4).

[0076] As indicated above, Figures 3A to 3C is provided as an example. Other examples may be different from what is described with respect to Figures 3A to 3C what is described.

[0077] Figure 4 is a diagram illustrating an exemplary process 400 performed by a UE, for example, in accordance with the present disclosure. Exemplary process 400 is an example in which a UE (e.g., UE 120) performs operations associated with techniques for SDM uplink transmission that is associated with a set of SRS resources scheduled by DCI format.

[0078] As Figure 4 shown, in some aspects, process 400 may include receiving an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format (block 410). For example, a UE (e.g., using the communication manager 140 depicted in Figure 6 and / or the receiving component 602) may receive an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, as described above. In some aspects, the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources. In some aspects, the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources. In some aspects, the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format. In some aspects, the The resources in the first SRS resource set and the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format.

[0079] As Figure 4 further shown, in some aspects, process 400 may include transmitting an uplink transmission scheduled using a second DCI format, which is transmitted at least in part based on an SRS configuration (block 420). For example, a UE (e.g., using Figure 6 the depicted communication manager 140 and / or transmission component 604) may transmit an uplink transmission scheduled using a second DCI format, which is transmitted at least in part based on an SRS configuration, as described herein.

[0080] Process 400 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0081] In a first aspect, the first set of SRS resources includes the first SRS resources in the SRS resource set, which is and the minimum value of, and wherein the second set of SRS resources includes the first SRS resources in the SRS resource set, which is and the minimum value of.

[0082] In a second aspect, either alone or in combination with the first aspect, the first set of SRS resources includes a number of SRS resources less than or equal to and the minimum value of, and wherein the second set of SRS resources includes a number of SRS resources less than or equal to and the minimum value of.

[0083] In a third aspect, either alone or in combination with one or more of the first and second aspects, is less than or equal to and is less than or equal to and wherein and are configured separately from and .

[0084] In a fourth aspect, either alone or in combination with one or more of the first through third aspects, less than or equal to and less than or equal to and wherein and with and separately configured.

[0085] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the first DCI format is DCI format 0_1, and the second DCI format is DCI format 0_2.

[0086] Although Figure 4 exemplary blocks of process 400 are shown, in some aspects, process 400 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner compared to the blocks depicted in Figure 4 . Additionally or alternatively, two or more of the blocks of process 400 may be executed in parallel.

[0087] Figure 5 is a diagram illustrating an exemplary process 500, such as performed by a base station, in accordance with the present disclosure. Exemplary process 500 is an example in which a base station (e.g., base station 110) performs operations associated with techniques for SDM uplink transmission, the SDM uplink transmission being associated with an SRS resource set scheduled by a DCI format.

[0088] As Figure 5 shown in , in some aspects, process 500 may include transmitting an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including Figure 7 SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format (block 510). For example, a base station (e.g., using the communication manager 150 and / or the transmission component 704 depicted in ) may transmit an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, as described above. In some aspects, the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources. In some aspects, the The first resources of the fourth SRS resource set. In some aspects, the third SRS resource set and the fourth SRS resource set are configured for uplink transmissions scheduled by the first DCI format. In some aspects, the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format.

[0089] As Figure 5 further shown, in some aspects, process 500 may include receiving an uplink transmission scheduled using a second DCI format, the uplink transmission being received at least in part based on an SRS configuration (block 520). For example, a base station (e.g., using Figure 7 the depicted communication manager 150 and / or receiving component 702) may receive an uplink transmission scheduled using a second DCI format, the uplink transmission being received at least in part based on an SRS configuration, as described herein.

[0090] Process 500 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.

[0091] In a first aspect, the first set of SRS resources includes the first SRS resources in the SRS resource set, which is and the minimum of, and wherein the second set of SRS resources includes the first SRS resources in the second SRS resource set, which is and the minimum of.

[0092] In a second aspect, either alone or in combination with the first aspect, the first set of SRS resources includes a number of SRS resources less than or equal to the minimum of and , and wherein the second set of SRS resources includes a number of SRS resources less than or equal to the minimum of and .

[0093] In a third aspect, either alone or in combination with one or more of the first and second aspects, is less than or equal to and is less than or equal to and wherein and are associated with and are separately arranged.

[0094] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, less than or equal to and less than or equal to and wherein and with and are separately arranged.

[0095] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the first DCI format is DCI format 0_1, and the second DCI format is DCI format 0_2.

[0096] Although Figure 5 exemplary blocks of process 500 are shown, in some aspects, process 500 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner compared to the blocks depicted in Figure 5 . Additionally or alternatively, two or more of the blocks of process 500 may be executed in parallel.

[0097] Figure 6 is a diagram of an exemplary apparatus 600 for wireless communication. Apparatus 600 may be a UE, or a UE may include apparatus 600. In some aspects, apparatus 600 includes a receiving component 602 and a transmitting component 604 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 600 may use receiving component 602 and transmitting component 604 to communicate with another apparatus 606 (such as a UE, a base station, or another wireless communication device). As further shown, apparatus 600 may include a communication manager 140.

[0098] In some aspects, apparatus 600 may be configured to perform one or more operations described herein in connection with Figures 3A to 3C . Additionally or alternatively, apparatus 600 may be configured to perform one or more processes described herein, such as Figure 4 process 400. In some aspects, Figure 6 apparatus 600 and / or one or more components shown in Figure 2 may include one or more components of the UE described in connection with Figure 6 . Additionally or alternatively, Figure 2implemented within one or more of the described components. Additionally or alternatively, one or more of the components in the group of components may be at least partially implemented as software stored in a memory. For example, a component (or a part of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.

[0099] The receiving component 602 may receive communications from the device 606, such as reference signals, control information, data communications, or combinations thereof. The receiving component 602 may provide the received communications to one or more other components of the device 600. In some aspects, the receiving component 602 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.), and may provide the processed signals to one or more other components of the device 600. In some aspects, the receiving component 602 may include one or more antennas, modems, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof of the UE described in Figure 2 connection.

[0100] The transmitting component 604 may transmit communications to the device 606, such as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of the device 600 may generate communications and may provide the generated communications to the transmitting component 604 for transmission to the device 606. In some aspects, the transmitting component 604 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or coding, etc.), and may transmit the processed signals to the device 606. In some aspects, the transmitting component 604 may include one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the UE described in Figure 2 connection. In some aspects, the transmitting component 604 may be co-located with the receiving component 602 in a transceiver.

[0101] The receiving component 602 may receive an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format. In some aspects, the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources. In some aspects, the A certain SRS resource is from the first resources of the fourth SRS resource set, resources. In some aspects, the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by the first DCI format. In some aspects, SRS resources in the third SRS resource set and resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format. The transmission component 604 can transmit an uplink transmission scheduled using the second DCI format, and the uplink transmission is at least partially transmitted based on the SRS configuration.

[0102] Figure 6 The number and arrangement of the components shown are provided as examples. In implementation, compared with the components shown in Figure 6 , there may be additional components, fewer components, different components, or components arranged in a different manner. Additionally, Figure 6 Two or more components shown in Figure 6 can be implemented within a single component, or Figure 6 A single component shown in Figure 6 can be implemented as multiple distributed components. Additionally or alternatively,

[0103] Figure 7 A group of (one or more) components shown in

[0104] can perform one or more functions described as being performed by Figures 3A to 3C another group of components shown in Figure 5 . Figure 7 In some aspects, the device 700 and / or one or more components shown in Figure 2 can include one or more components of the base station described in Figure 7 . Additionally or alternatively, Figure 2implemented within one or more of the described components. Additionally or alternatively, one or more of the components in the group of components may be at least partially implemented as software stored in a memory. For example, a component (or a part of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and capable of being executed by a controller or a processor to perform the functions or operations of the component.

[0105] The receiving component 702 may receive communications from the device 706, such as reference signals, control information, data communications, or combinations thereof. The receiving component 702 may provide the received communications to one or more other components of the device 700. In some aspects, the receiving component 702 may perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 700. In some aspects, the receiving component 702 may include one or more antennas, modems, demodulators, MIMO detectors, receiving processors, controller / processors, memories, or combinations thereof of the base station described in Figure 2 connection.

[0106] The transmitting component 704 may transmit communications to the device 706, such as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of the device 700 may generate communications and may provide the generated communications to the transmitting component 704 for transmission to the device 706. In some aspects, the transmitting component 704 may perform signal processing (such as filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 706. In some aspects, the transmitting component 704 may include one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controller / processors, memories, or combinations thereof of the base station described in Figure 2 connection. In some aspects, the transmitting component 704 may be co-located with the receiving component 702 in a transceiver.

[0107] The transmitting component 704 may transmit an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format. In some aspects, of the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources. In some aspects, A SRS resource is from among the first resources of the fourth SRS resource set, and is the first resources. In some aspects, the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format. In some aspects, SRS resources in the third SRS resource set and resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by a first DCI format. The receiving component 702 may receive an uplink transmission scheduled using a second DCI format, where the uplink transmission is received at least in part based on an SRS configuration.

[0108] Figure 7 The number and arrangement of the components shown are provided as an example. In implementation, there may be additional components, fewer components, different components, or components arranged differently compared to those shown in Figure 7 . Additionally, Figure 7 two or more of the components shown in Figure 7 may be implemented within a single component, or Figure 7 a single component shown in Figure 7 may be implemented as multiple distributed components. Additionally or alternatively,

[0109] An overview of some aspects of the present disclosure is provided below:

[0110] Aspect 1: A method of wireless communication performed by a UE, the method comprising: receiving an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, where the first SRS resource set and the second SRS resource set are configured for uplink transmission scheduled by a second DCI format, where the SRS resources in the first SRS resource set are from among the first resources of a third SRS resource set, and are the first resources, where the SRS resources in the second SRS resource set are from among the first resources of a fourth SRS resource set, and are the first resources, where the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and where SRS resources in the third SRS resource set and One resource is configured for SDM uplink communication scheduled by the first DCI format; and for transmitting an uplink transmission scheduled by the second DCI format, the uplink transmission being at least partially transmitted based on the SRS configuration.

[0111] Aspect 2: The method according to aspect 1, wherein, for the second DCI format, a first SRI is allowed to indicate an SRS resource among a first set of SRS resources from the first SRS resource set, and a second SRI is allowed to indicate an SRS resource among a second set of SRS resources from the second SRS resource set, wherein the first set of SRS resources includes the first SRS resources in is and the minimum value of, and wherein the second set of SRS resources includes the first SRS resources in is and the minimum value of.

[0112] Aspect 3: The method according to any one of aspects 1 and 2, wherein, for the second DCI format, a first SRI is allowed to indicate an SRS resource among a first set of SRS resources from the first SRS resource set, and a second SRI is allowed to indicate an SRS resource among a second set of SRS resources from the second SRS resource set, wherein the first set of SRS resources includes a number of SRS resources less than or equal to and the minimum value of, and wherein the second set of SRS resources includes a number of SRS resources less than or equal to and the minimum value of.

[0113] Aspect 4: The method according to aspect 1, wherein, for the second DCI format, a first SRI is allowed to indicate an SRS resource among the first SRS resources in, and a second SRI is allowed to indicate an SRS resource among the first SRS resources in, wherein is less than or equal to and is less than or equal to and wherein and are and configured separately from.

[0114] Aspect 5: The method according to any one of Aspects 1 and 4, wherein, for the second DCI format, the first SRI is allowed to indicate up to SRS resources in the first SRS resource set, and the second SRI is allowed to indicate up to SRS resources in the second SRS resource set, where is less than or equal to and is less than or equal to and wherein and are configured separately from and separately.

[0115] Aspect 6: The method according to any one of Aspects 1 - 5, wherein the first DCI format is DCI format 0_1, and the second DCI format is DCI format 0_2.

[0116] Aspect 7: A method for wireless communication performed by a base station, the method comprising: transmitting an SRS configuration that indicates a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second DCI format, wherein the SRS resources in the first SRS resource set are the first resources from a third SRS resource set including resources, wherein the SRS resources in the second SRS resource set are the first resources from a fourth SRS resource set including resources, wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for SDM uplink communication scheduled by the first DCI format; and receiving an uplink transmission scheduled using the second DCI format, the uplink transmission being received at least in part based on the SRS configuration.

[0117] Aspect 8: The method according to aspect 7, wherein, for the second DCI format, the first SRI is allowed to indicate SRS resources in a first set of SRS resources from the first SRS resource set, and the second SRI is allowed to indicate SRS resources in a second set of SRS resources from the second SRS resource set, wherein the first set of SRS resources includes the first SRS resources in the first SRS resource set, is and is the minimum value of, and wherein the second set of SRS resources includes the first SRS resources in the second SRS resource set, is and is the minimum value of.

[0118] Aspect 9: The method according to any one of aspects 7 and 8, wherein, for the second DCI format, the first SRI is allowed to indicate SRS resources in a first set of SRS resources from the first SRS resource set, and the second SRI is allowed to indicate SRS resources in a second set of SRS resources from the second SRS resource set, wherein the first set of SRS resources includes a number of SRS resources less than or equal to and is the minimum value of, and wherein the second set of SRS resources includes a number of SRS resources less than or equal to and is the minimum value of.

[0119] Aspect 10: The method according to aspect 7, wherein, for the second DCI format, the SRI is allowed to indicate SRS resources in the first SRS resources in the first SRS resource set, and the second SRI is allowed to indicate SRS resources in the first SRS resources in the second SRS resource set, wherein is less than or equal to and is less than or equal to and wherein and are configured separately from and .

[0120] Aspect 11: The method according to any one of aspects 7 and 10, wherein, for the second DCI format, the first SRI is allowed to indicate up to SRS resources in the first SRS resource set, and the second SRI is allowed to indicate up to SRS resources in the second SRS resource set, wherein less than or equal to and less than or equal to and wherein and with and separately arranged

[0121] Aspect 12: The method according to any one of Aspects 7 - 11, wherein the first DCI format is DCI format 0_1, and the second DCI format is DCI format 0_2.

[0122] Aspect 13: An apparatus for wireless communication at a device, the apparatus 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 - 6.

[0123] Aspect 14: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of Aspects 1 - 6.

[0124] Aspect 15: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of Aspects 1 - 6.

[0125] Aspect 16: 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 - 6.

[0126] Aspect 17: 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 - 6.

[0127] Aspect 18: An apparatus for wireless communication at a device, the apparatus 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 7 - 12.

[0128] Aspect 19: A device for wireless communication, the device comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of Aspects 7-12.

[0129] Aspect 20: A device for wireless communication, the device comprising at least one component for performing the method according to one or more of Aspects 7-12.

[0130] Aspect 21: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions that can be executed by a processor to perform the method according to one or more of Aspects 7-12.

[0131] Aspect 22: 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 7-12.

[0132] 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 can be made in light of the above disclosure, or can be obtained from practice of these aspects.

[0133] As used herein, the term "component" is intended to be broadly construed as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, "software" should be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, and / or functions, among other examples. As used herein, a "processor" is implemented by hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented in different forms of hardware and / or combinations of hardware and software. The actual specific control hardware or software code used to implement these systems and / or methods does not limit the aspects. Accordingly, the operation and behavior of the systems and / or methods are not described herein with reference to specific software code, as those skilled in the art will understand that the software and hardware can be designed at least in part based on the description herein to implement the systems and / or methods.

[0134] As used herein, depending on the context, "meeting a threshold" can mean that a value is 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.

[0135] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. Many of these features may be combined in ways not specifically recited in the claims and / or not disclosed in the specification. The disclosure of each aspect includes each dependent claim in combination with every other claim in the claim set. As used herein, the phrase referring to a list of items “at least one of” means any combination of these items (including a single member). By way of example, “at least one of a, b, or c” is intended to cover a, b, c, a + b, a + c, b + c, and a + b + c, as well as any combination with multiple of the same element (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 ordering of a, b, and c).

[0136] Any element, act, or instruction used herein should not be construed as critical or essential unless expressly so stated. Further, as used herein, the articles “a” and “an” are intended to include one or more items and may be used interchangeably with “one or more.” Further, as used herein, the article “the” is intended to include one or more of the items referred to in connection with the article “the” and may be used interchangeably with “one or more.” Further, as used herein, the terms “set” and “group” are intended to include one or more items and may be used interchangeably with “one or more.” If only one item is intended to be referred to, the phrase “only one” or similar language is used. Also, as used herein, the terms “having,” “possessing,” “with,” etc. are intended to be open-ended terms that do not limit the elements they modify (e.g., an element “having” A may also have B). Further, the phrase “based on” is intended to mean “at least partially based on” unless expressly stated otherwise. Further, as used herein, the term “or” when used in a series is intended to be open-ended and may be used interchangeably with “and / or” unless expressly stated otherwise (e.g., if used in conjunction with “either” or “only one”).

Claims

1. A user equipment (UE) for wireless communication, the UE comprising: a memory; and one or more processors coupled to the memory and configured to: Receive a sounding reference signal (SRS) configuration, the SRS configuration indicating a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second downlink control information (DCI) format wherein the SRS resources in the first SRS resource set are from the first resources of a third SRS resource set including resources. wherein the SRS resources in the second SRS resource set are from the first resources of a fourth SRS resource set including resources. wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the first DCI format is DCI format 0_1 and the second DCI format is DCI format 0_2; and Among which, the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for spatial division multiplexing (SDM) uplink communication scheduled by the first DCI format; receive DCI scheduling an SDM uplink transmission having the second DCI format, the DCI including a first SRS resource indicator (SRI) and a second SRI; and transmit the SDM uplink transmission at least in part based on the SRS configuration.

2. The UE according to claim 1, wherein, allow the first SRI to indicate an SRS resource from a first set of SRS resources of the first SRS resource set, and allow the second SRI to indicate an SRS resource from a second set of SRS resources of the second SRS resource set, wherein the first set of SRS resources includes the first number of SRS resources in the first SRS resource set, is the minimum value of and wherein the second set of SRS resources includes the first SRS resources in the second SRS resource set, which is the minimum value of and 3. The UE according to claim 1, wherein, allow the first SRI to indicate an SRS resource from a first set of SRS resources of the first SRS resource set, and allow the second SRI to indicate an SRS resource from a second set of SRS resources of the second SRS resource set, wherein the first set of SRS resources includes the number of SRS resources less than or equal to the minimum value of and , and Wherein the second set of SRS resources includes the number of SRS resources less than or equal to the minimum value of and .

4. The UE according to claim 1, wherein Allow the first SRI to indicate an SRS resource among the first several SRS resources in the SRS resource set, and allow the second SRI to indicate an SRS resource among the first several SRS resources in the second SRS resource set. wherein less than or equal to and less than or equal to and wherein and with and separately arranged.

5. The UE according to claim 1, wherein Allow the first SRI to indicate up to SRS resources in the first SRS resource set, and allow the second SRI to indicate up to SRS resources in the second SRS resource set. wherein less than or equal to and less than or equal to and wherein and with and separately arranged.

6. A base station for wireless communication, the base station comprising: a memory; and one or more processors coupled to the memory and configured to: Transmission sounding reference signal SRS configuration, the SRS configuration indicating includes a first SRS resource set of SRS resources and includes a second SRS resource set of SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second downlink control information DCI format wherein the SRS resources in the first SRS resource set are from the first resources of a third SRS resource set including resources. wherein the SRS resources in the second SRS resource set are from the first resources of a fourth SRS resource set including resources. wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the first DCI format is DCI format 0_1 and the second DCI format is DCI format 0_2; and wherein the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for spatial division multiplexing (SDM) uplink communication scheduled by the first DCI format; transmitting DCI for scheduling SDM uplink transmission with the second DCI format, the DCI including a first SRS resource indicator (SRI) and a second SRI; and receive the SDM uplink transmission at least in part based on the SRS configuration.

7. The base station according to claim 6, wherein, allow the first SRI to indicate an SRS resource from a first set of SRS resources of the first SRS resource set, and allow the second SRI to indicate an SRS resource from a second set of SRS resources of the second SRS resource set, wherein the first set of SRS resources includes the first number of SRS resources in the first SRS resource set, which is and the minimum value of, and wherein the second set of SRS resources includes the first SRS resources in the second SRS resource set, being and the minimum value thereof.

8. The base station according to claim 6, wherein, allow the first SRI to indicate an SRS resource from a first set of SRS resources of the first SRS resource set, and allow the second SRI to indicate an SRS resource from a second set of SRS resources of the second SRS resource set, wherein the first set of SRS resources includes the number of SRS resources less than or equal to the minimum value of and , and wherein the second set of SRS resources includes the number of SRS resources less than or equal to the minimum value of and .

9. The base station according to claim 6, wherein, Allow the first SRI to indicate an SRS resource among the first number of SRS resources in the SRS resource set, and allow the second SRI to indicate an SRS resource among the first number of SRS resources in the second SRS resource set. wherein less than or equal to and less than or equal to and wherein and with and separately arranged 10. The base station according to claim 6, wherein, Allow the first SRI to indicate up to SRS resources in the first SRS resource set, and allow the second SRI to indicate up to SRS resources in the second SRS resource set. wherein less than or equal to and less than or equal to and wherein and with and separately arranged 11. A method of wireless communication performed by a user equipment (UE), the method comprising: Receive a sounding reference signal (SRS) configuration, the SRS configuration indicating a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second downlink control information (DCI) format wherein the SRS resources in the first SRS resource set are from the first resources of a third SRS resource set including resources. wherein the SRS resources in the second SRS resource set are from the first resources of a fourth SRS resource set including resources. wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the first DCI format is DCI format 0_1 and the second DCI format is DCI format 0_2; and Among which, the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for spatial division multiplexing (SDM) uplink communication scheduled by the first DCI format; receive DCI scheduling an SDM uplink transmission having the second DCI format, the DCI including a first SRS resource indicator (SRI) and a second SRI; and transmit the SDM uplink transmission at least in part based on the SRS configuration.

12. The method according to claim 11, wherein, Allow the first SRI to indicate an SRS resource among a first set of SRS resources from the first SRS resource set, and allow the second SRI to indicate an SRS resource among a second set of SRS resources from the second SRS resource set, wherein the first set of SRS resources includes the first number of SRS resources in the first SRS resource set, is the minimum value of and, and wherein the second set of SRS resources includes the first SRS resources in the second SRS resource set, which is and the minimum value of.

13. The method according to claim 11, wherein, Allow the first SRI to indicate an SRS resource among a first set of SRS resources from the first SRS resource set, and allow the second SRI to indicate an SRS resource among a second set of SRS resources of the second SRS resource set, wherein the first set of SRS resources includes the number of SRS resources less than or equal to the minimum value of and , and wherein the second set of SRS resources includes the number of SRS resources less than or equal to the minimum value of and .

14. The method according to claim 11, wherein, Allow the first SRI to indicate an SRS resource among the first several SRS resources in the SRS resource set, and allow the second SRI to indicate an SRS resource among the first several SRS resources in the second SRS resource set. wherein less than or equal to and less than or equal to and wherein and with and separately arranged 15. The method according to claim 11, wherein Allow the first SRI to indicate up to SRS resources in the first SRS resource set, and allow the second SRI to indicate up to SRS resources in the second SRS resource set. wherein less than or equal to and less than or equal to and wherein and with and separately arranged.

16. A method for wireless communication performed by a base station, the method comprising: Transmission sounding reference signal (SRS) configuration, the SRS configuration indicating a first SRS resource set including SRS resources and a second SRS resource set including SRS resources, the first SRS resource set and the second SRS resource set being configured for uplink transmission scheduled by a second downlink control information (DCI) format wherein the SRS resources in the first SRS resource set are from the first resources of a third SRS resource set including resources. wherein the SRS resources in the second SRS resource set are from the first resources of a fourth SRS resource set including resources. wherein the third SRS resource set and the fourth SRS resource set are configured for uplink transmission scheduled by a first DCI format, and wherein the first DCI format is DCI format 0_1 and the second DCI format is DCI format 0_2; and Among which, the SRS resources in the third SRS resource set and the resources in the fourth SRS resource set are configured for spatial division multiplexing (SDM) uplink communication scheduled by the first DCI format; Transmit DCI scheduling an SDM uplink transmission having the second DCI format, the DCI including a first SRS resource indicator SRI and a second SRI; and Receive the SDM uplink transmission at least partially based on the SRS configuration.

17. The method according to claim 16, wherein, Allow the first SRI to indicate an SRS resource among a first set of SRS resources from the first SRS resource set, and allow the second SRI to indicate an SRS resource among a second set of SRS resources from the second SRS resource set, wherein the first set of SRS resources includes the first number of SRS resources in the first SRS resource set, is the minimum value of and, and wherein the second set of SRS resources includes the first SRS resources in the second SRS resource set, which is and the minimum value among them.

18. The method according to claim 16, wherein Allow the first SRI to indicate an SRS resource among a first set of SRS resources from the first SRS resource set, and allow the second SRI to indicate an SRS resource among a second set of SRS resources of the second SRS resource set, wherein the first set of SRS resources includes the number of SRS resources less than or equal to the minimum value of and , and wherein the second set of SRS resources includes the number of SRS resources less than or equal to the minimum value of and .

19. The method according to claim 16, wherein, Allow the first SRI to indicate SRS resources among the first several SRS resources from the first SRS resource set, and allow the second SRI to indicate SRS resources among the first several SRS resources from the second SRS resource set. wherein less than or equal to and less than or equal to and wherein and with and separately arranged.

20. The method according to claim 16, wherein, Allow the first SRI to indicate up to SRS resources in the first SRS resource set, and allow the second SRI to indicate up to SRS resources in the second SRS resource set. wherein less than or equal to and less than or equal to and wherein and with and separately arranged

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