Physical Uplink Shared Channel (PUSCH) Transmission in a Joint Downlink and Uplink Transmission Configuration Indicator (TCI) State Scenario

Abstract

The present disclosure provides systems, methods, and apparatuses for physical uplink shared channel (PUSCH) communication in joint downlink and uplink transmission configuration indicator (TCI) state scenarios. In one aspect, a user equipment (UE) may transmit a sounding reference signal (SRS) resource for communication of a codebook-based or non-codebook-based PUSCH before receiving downlink control information (DCI) that schedules or activates PUSCH communication. The UE may determine a TCI state for PUSCH communication based on received DCI (such as, for example, when the received DCI includes an indication of a TCI state), or based on the transmitted SRS (such as when the received DCI does not include an indication of a TCI).

Description

Technical Field

[0001] Aspects of the present disclosure generally relate to wireless communications and techniques for physical uplink shared channel (PUSCH) transmission in a joint downlink and uplink transmission configuration indicator (TCI) state scenario.

[0002] Description of Related Art

[0003] 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 a multiple access technology capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is an enhanced set of the universal mobile telecommunications system (UMTS) mobile standards promulgated by the third generation partnership project (3GPP).

[0004] A wireless network may include several base stations (BSs) capable of supporting communication of several user equipments (UEs). A user equipment (UE) may communicate with a base station (BS) via a downlink (DL) and an uplink (UL). The DL (or forward link) refers to the communication link from the BS to the UE, while the UL (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a B node, an LTE evolved B node (eNB), a gNB, an access point (AP), a radio head, a transmission reception point (TRP), a new radio (NR) BS, or a 5G B node.

[0005] The above multiple 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 even global levels. NR (which may also be referred to as 5G) is an enhanced set of the LTE mobile standards promulgated by the third generation partnership project (3GPP). NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the DL, CP-OFDM or SC-FDM (e.g., also referred to as discrete Fourier transform spread OFDM (DFT-s-OFDM)) (or a combination thereof) on the UL, and supporting beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation to improve spectral efficiency, reduce costs, improve services, utilize new spectrums, and better integrate with other open standards.

[0006] Overview

[0007] The systems, methods, and devices of the present disclosure each have several innovative aspects, and no single aspect is solely responsible for the desired attributes disclosed herein.

[0008] One innovative aspect of the subject matter described in the present disclosure can be implemented in a method of wireless communication performed by a device of a wireless communication device. The method may include: transmitting a sounding reference signal (SRS) to a base station (BS) for configuring a physical uplink shared channel (PUSCH) communication including a spatial filter corresponding to a transmission configuration indicator (TCI) state; and receiving downlink control information (DCI) for scheduling or activating the PUSCH communication based on the SRS.

[0009] In some aspects, the PUSCH communication is codebook-based PUSCH communication. In some aspects, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state. In some aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or a spatial reference signal of the TCI state. In some aspects, the DCI identifies a transmitted precoding matrix indicator, or a transmission rank determined based on the SRS. In some aspects, the DCI identifies a TCI state or a sounding reference signal resource indicator (SRI) for the PUSCH communication. In some aspects, the method includes determining a TCI state for the PUSCH communication based on the DCI.

[0010] In some aspects, the DCI does not include information identifying the TCI state, and the method further includes determining a TCI state for the PUSCH communication based on the SRS. In some aspects, transmitting the SRS includes transmitting the SRS using an antenna port; and transmitting the PUSCH communication using an antenna port. In some aspects, the PUSCH communication is non-codebook PUSCH communication. In some aspects, the TCI state is applied to the PUSCH on a per-layer basis. In some aspects, the wireless communication device is a user equipment (UE) or a transmit receive point (TRP). In some aspects, the DCI is multi-DCI (mDCI), and the wireless communication device operates in a multi-transmit receive point (mTRP) communication mode.

[0011] Another innovative aspect of the subject matter described in the present disclosure can be implemented in a device for wireless communication by a wireless communication device. The device may include: a first interface that outputs an SRS for transmitting to the BS for configuring a PUSCH communication including a spatial filter corresponding to a TCI state; and a second interface that obtains DCI for scheduling or activating the PUSCH communication based on the SRS.

[0012] In some aspects, the PUSCH communication is codebook-based PUSCH communication. In some aspects, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state. In some aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or the spatial reference signal of the TCI state. In some aspects, the DCI identifies the transmitted precoding matrix indicator, or the transmission rank determined based on the SRS. In some aspects, the DCI identifies the TCI state for the PUSCH communication, or the SRI. In some aspects, the apparatus includes a processing system that determines the TCI state for the PUSCH communication based on the DCI.

[0013] In some aspects, the DCI does not include information identifying the TCI state, and the apparatus includes a processing system that determines the TCI state for the PUSCH communication based on the SRS. In some aspects, when configured to output the SRS, the second interface is configured to output the SRS for transmission using an antenna port, and output the PUSCH communication for transmission using an antenna port. In some aspects, the PUSCH communication is non-codebook PUSCH communication. In some aspects, the TCI state is applied to the PUSCH on a per-layer basis. In some aspects, the apparatus is a UE or a TRP. In some aspects, the DCI is mDCI, and the wireless communication device operates in the mTRP communication mode.

[0014] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium can store one or more instructions for wireless communication. When executed by one or more processors of a wireless communication device, the one or more instructions can cause the one or more processors to: transmit a sounding reference signal (SRS) to a base station (BS) for configuring a physical uplink shared channel (PUSCH) communication including a spatial filter corresponding to a transmission configuration indicator (TCI) state; and receive downlink control information (DCI) for scheduling or activating the PUSCH communication based on the SRS.

[0015] In some aspects, the PUSCH communication is codebook-based PUSCH communication. In some aspects, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state. In some aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or the spatial reference signal of the TCI state. In some aspects, the DCI identifies the transmitted precoding matrix indicator, or the transmission rank determined based on the SRS. In some aspects, the DCI identifies the TCI state for the PUSCH communication, or the SRI. In some aspects, the one or more instructions further cause the wireless communication device to determine the TCI state for the PUSCH communication based on the DCI.

[0016] In some aspects, the DCI does not include information identifying the TCI state, and the one or more instructions further cause the wireless communication device to determine the TCI state for PUSCH communication based on the SRS. In some aspects, when the one or more instructions cause the wireless communication device to transmit the SRS, the one or more instructions cause the wireless communication device to transmit the SRS using an antenna port; and to transmit PUSCH communication using an antenna port. In some aspects, the PUSCH communication is non-codebook PUSCH communication. In some aspects, the TCI state is applied to the PUSCH on a per-layer basis. In some aspects, the wireless communication device is a UE or a TRP. In some aspects, the DCI is mDCI, and the wireless communication device operates in an mTRP communication mode.

[0017] Another innovative aspect of the subject matter described in this disclosure can be implemented in a device for wireless communication. The device can include: means for transmitting to a BS an SRS for configuring PUSCH communication including a spatial filter corresponding to a TCI state; and means for receiving DCI scheduling or activating the PUSCH communication based on the SRS.

[0018] In some aspects, the PUSCH communication is codebook-based PUSCH communication. In some aspects, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state. In some aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or a spatial reference signal of the TCI state. In some aspects, the DCI identifies the transmitted precoding matrix indicator, or the transmission rank determined based on the SRS. In some aspects, the DCI identifies the TCI state for the PUSCH communication, or the SRI. In some aspects, the device includes means for determining the TCI state for the PUSCH communication based on the DCI.

[0019] In some aspects, the DCI does not include information identifying the TCI state, and the device includes means for determining the TCI state for the PUSCH communication based on the SRS. In some aspects, the means for transmitting the SRS includes means for transmitting the SRS using an antenna port; and means for transmitting PUSCH communication using an antenna port. In some aspects, the PUSCH communication is non-codebook PUSCH communication. In some aspects, the TCI state is applied to the PUSCH on a per-layer basis. In some aspects, the means is a UE or a TRP. In some aspects, the DCI is mDCI, and the device operates in an mTRP communication mode.

[0020] Another innovative aspect of the subject matter described in this disclosure can be implemented in a wireless communication method performed by a device of a base station (BS). The method may include: receiving a sounding reference signal (SRS) associated with configuring physical uplink shared channel (PUSCH) communication including a spatial filter corresponding to a transmit configuration indicator (TCI) state; and transmitting downlink control information (DCI) for scheduling or activating the PUSCH communication based on the SRS.

[0021] In some aspects, the PUSCH communication is codebook-based PUSCH communication. In some aspects, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state. In some aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or a spatial reference signal of the TCI state. In some aspects, the DCI identifies the transmitted precoding matrix indicator, or the transmission rank determined based on the SRS. In some aspects, the DCI identifies the TCI state for the PUSCH communication, or the spatial relation information (SRI).

[0022] In some aspects, the method includes determining the TCI state for the PUSCH communication based on the DCI. In some aspects, the DCI does not include information identifying the TCI state, and the method includes determining the TCI state for the PUSCH communication based on the SRS. In some aspects, receiving the SRS includes receiving the SRS using an antenna port; and receiving the PUSCH communication using an antenna port. In some aspects, the PUSCH communication is non-codebook PUSCH communication. In some aspects, the TCI state is applied to the PUSCH on a per-layer basis. In some aspects, the DCI is mini-DCI, and the device operates in a multi-transmission and reception point (mTRP) communication mode.

[0023] Another innovative aspect of the subject matter described in this disclosure can be implemented in a device of a BS for wireless communication. The device may include: a first interface configured to obtain an SRS associated with configuring PUSCH communication including a spatial filter corresponding to a TCI state; and a second interface configured to output DCI for transmission for scheduling or activating the PUSCH communication based on the SRS.

[0024] In some aspects, the PUSCH communication is codebook-based PUSCH communication. In some aspects, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state. In some aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or a spatial reference signal of the TCI state. In some aspects, the DCI identifies the transmitted precoding matrix indicator, or the transmission rank determined based on the SRS. In some aspects, the DCI identifies the TCI state for the PUSCH communication, or the SRI.

[0025] In some aspects, the apparatus includes a processing system configured to determine a TCI state for PUSCH communication based on DCI. In some aspects, the DCI does not include information identifying the TCI state, and the apparatus includes a processing system that determines the TCI state for PUSCH communication based on SRS. In some aspects, when configured to obtain SRS, the first interface is configured to obtain SRS using an antenna port; and obtain PUSCH communication using an antenna port. In some aspects, the PUSCH communication is non-codebook PUSCH communication. In some aspects, the TCI state is applied to PUSCH on a per-layer basis. In some aspects, the DCI is mDCI, and the device operates in an mTRP communication mode.

[0026] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium can store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of the BS, can cause the one or more processors to: receive SRS associated with configuring PUSCH communication including a spatial filter corresponding to a TCI state; and transmit DCI scheduling or activating the PUSCH communication based on the SRS.

[0027] In some aspects, the PUSCH communication is codebook-based PUSCH communication. In some aspects, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state. In some aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or a spatial reference signal of the TCI state. In some aspects, the DCI identifies a transmitted precoding matrix indicator, or a transmission rank determined based on the SRS. In some aspects, the DCI identifies the TCI state for the PUSCH communication, or an SRI.

[0028] In some aspects, the one or more instructions cause the BS to determine the TCI state for PUSCH communication based on DCI. In some aspects, the DCI does not include information identifying the TCI state, and the one or more instructions cause the BS to determine the TCI state for PUSCH communication based on SRS. In some aspects, the one or more instructions that cause the BS to receive SRS cause the BS to receive SRS using an antenna port; and receive PUSCH communication using an antenna port. In some aspects, the PUSCH communication is non-codebook PUSCH communication. In some aspects, the TCI state is applied to PUSCH on a per-layer basis. In some aspects, the DCI is mDCI, and the device operates in an mTRP communication mode.

[0029] Another innovative aspect of the subject matter described in this disclosure can be implemented in a device for wireless communication. The device may include: means for receiving sounding reference signals (SRS) associated with configuring physical uplink shared channel (PUSCH) communication including a spatial filter corresponding to a transmission configuration indicator (TCI) state; and means for transmitting downlink control information (DCI) for scheduling or activating PUSCH communication based on the SRS.

[0030] In some aspects, the PUSCH communication is codebook-based PUSCH communication. In some aspects, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state. In some aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or a spatial reference signal of the TCI state. In some aspects, the DCI identifies a precoding matrix indicator transmitted, or a transmission rank determined based on the SRS. In some aspects, the DCI identifies the TCI state for the PUSCH communication, or a spatial relation information (SRI).

[0031] In some aspects, the device includes means for determining the TCI state for the PUSCH communication based on the DCI. In some aspects, the DCI does not include information identifying the TCI state, and the device includes means for determining the TCI state for the PUSCH communication based on the SRS. In some aspects, the means for receiving the SRS includes means for receiving the SRS using an antenna port; and means for receiving the PUSCH communication using an antenna port. In some aspects, the PUSCH communication is non-codebook PUSCH communication. In some aspects, the TCI state is applied to the PUSCH on a per-layer basis. In some aspects, the DCI is mini-DCI, and the device operates in a multi-transmission and reception point (mTRP) communication mode.

[0032] Aspects generally include methods, apparatus (devices), systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, or processing systems as substantially described herein with reference to the figures and as illustrated in the figures.

[0033] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale. Brief Description of the Drawings

[0035] Figure 1 is a diagram illustrating an example of a wireless network.

[0036] Figure 2 is a diagram illustrating an example of a base station (BS) and a user equipment (UE) in communication in a wireless network.

[0037] Figure 3It is a diagram illustrating an example of a beamforming architecture that explains beamforming for millimeter wave (mmW) communication.

[0038] Figure 4 It is a diagram illustrating an example of communication using beams between a BS and a UE.

[0039] Figure 5 It is a diagram illustrating an example associated with physical uplink shared channel (PUSCH) transmission in a joint downlink and uplink transmission configuration indicator (TCI) state scenario.

[0040] Figure 6 It is a diagram illustrating an example process performed by a wireless communication device such as a UE.

[0041] Figure 7 It is a diagram illustrating an example process performed by a BS, for example.

[0042] Figure 8 and Figure 9 It is a block diagram of an example apparatus for wireless communication.

[0043] Like reference numerals and names in the various figures indicate like elements.

[0044] Detailed Description

[0045] The following description is directed to certain implementations in order to describe innovative aspects of the present disclosure. However, those of ordinary skill in the art will readily recognize that the teachings herein can be applied in many different ways. Some examples in the present disclosure are based on wireless and wired local area network (LAN) communications according to the Institute of Electrical and Electronics Engineers (IEEE) 802.11 wireless standard, the IEEE 802.3 Ethernet standard, and the IEEE 1901 power line communication (PLC) standard. However, the described implementations can be implemented in any device, system, or network capable of transmitting and receiving radio frequency signals according to any one of the following wireless communication protocols: including any one of the IEEE 802.11 standards, (Bluetooth) standards, Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Global System for Mobile Communications (GSM), GSM / General Packet Radio Service (GPRS), Enhanced Data GSM Environment (EDGE), Terrestrial Trunked Radio (TETRA), Wideband CDMA (W-CDMA), Evolution-Data Optimized (EV-DO), 1xEV-DO, EV-DO Revision A, EV-DO Revision B, High Speed Packet Access (HSPA), High Speed Downlink Packet Access (HSDPA), High Speed Uplink Packet Access (HSUPA), Evolutionary High Speed Packet Access (HSPA+), Long Term Evolution (LTE), AMPS, or other known signals for communication within a wireless network, a cellular network, or an Internet of Things (IoT) network (such as a system utilizing 3G, 4G, or 5G or further implemented technologies).

[0046] In some cases, a User Equipment (UE) may use a Transmission Configuration Indicator (TCI) (such as a TCI state defined in 3GPP specifications) or other similar data structures to decode a downlink transmission from a Base Station (BS). The TCI may indicate one or more Quasi-Co-Location (QCL) rules, where the rules associate reference signals (e.g., synchronization signals, such as Synchronization Signal Blocks (SSBs); Channel State Information (CSI) Reference Signals (CSI-RS); Positioning Reference Signals (PRS); or other reference signals) with associated channel characteristics (e.g., Doppler frequency shift; Doppler spread; average delay; delay spread; one or more spatial parameters, such as a spatial filter; or other characteristics). Such QCL rules may include QCL TypeA, QCL TypeB, QCL Type C, or QCL TypeD data structures defined by 3GPP specifications.

[0047] Some standards (such as 3GPP specifications) define the TCI for downlink communication from the BS to the UE. However, the BS and the UE typically manage uplink communication separately, which requires additional processing time as well as signaling and network overhead. Additionally, some standards (such as 3GPP specifications) define a TCI with no more than two QCL rules.

[0048] A combined downlink and uplink TCI state can be defined, where a common beam is used for data and control transmission and reception. The combined downlink and uplink TCI state can be used in in-band carrier aggregation (CA) scenarios and other scenario examples. Some aspects described herein can define one or more transmission rules for combined downlink and uplink TCI state scenarios, such as rules regarding the transmission of sounding reference signals (SRS) and the reception of downlink control information (DCI) that activates physical uplink shared channel (PUSCH) transmission. One or more transmission rules can apply to codebook-based PUSCH transmission or non-codebook-based PUSCH transmission. For example, for codebook-based PUSCH transmission with a spatial transmit filter indicated by a combined uplink and downlink TCI state or an uplink (only) TCI state, the UE can transmit an SRS associated with at least one SRS resource before receiving DCI scheduling or activating codebook-based PUSCH. In some cases, the combined TCI state, uplink TCI state, or spatial relation information indicated in DCI scheduling or activating PUSCH can include information identifying the spatial transmit filter. In such cases, the spatial transmit filter indicated in the above information can be derived from the corresponding combined TCI state, corresponding uplink TCI state, or corresponding spatial relation information included in one or more SRS resources transmitted in combination with PUSCH.

[0049] Certain implementations of the subject matter described in this disclosure can be realized to achieve one or more of the following potential advantages. As described herein, the UE can transmit an SRS and the BS can transmit DCI that can activate or schedule PUSCH transmission based on the received SRS. Using a "common" beam in combined downlink and uplink TCI scenarios can reduce signaling and network overhead by using a single TCI (also referred to as combined TCI or combined downlink and downlink TCI) to indicate the quasi-co-location (QCL) rules for both the uplink and downlink. The combined TCI can enable a unified TCI framework that can simplify beam management procedures not only for downlink and uplink channels but also for data and control channels in 3GPP New Radio (NR) systems. For example, when transmitting multiple SRSs of different beams for communication of codebook-based or non-codebook-based PUSCH, including an explicit beam indication (such as TCI) in the DCI for PUSCH communication can enhance the flexibility for uplink transmission.

[0050] Figure 1FIG. is a diagram illustrating an example of a wireless network 100. The wireless network 100 can be a 5G (NR) network, an LTE network, or another network type or can include elements thereof. The wireless network 100 can include one or more base stations 110 (shown as BS110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with user equipment (UE) and can also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, or transmission reception point (TRP). Each BS can provide communication coverage for a specific geographic area. In 3GPP, the term "cell" can refer to the coverage area of a BS, the BS subsystem serving that coverage area, or a combination thereof, depending on the context in which the term is used.

[0051] The BS can provide communication coverage for a macro cell, a pico cell, a femto cell, another type of cell, or a combination thereof. A macro cell can cover a relatively large geographic area (e.g., with a radius of several kilometers) and can allow unconstrained access by UEs with a service subscription. A pico cell can cover a relatively small geographic area and can allow unconstrained access by UEs with a service subscription. A femto cell can cover a relatively small geographic area (e.g., a residence) and can allow constrained access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). The BS for a macro cell can be referred to as a macro BS. The BS for a pico cell can be referred to as a pico BS. The BS for a femto cell can be referred to as a femto BS or a home BS. In Figure 1 the example shown, BS110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5GNB", and "cell" can be used interchangeably herein.

[0052] In some examples, a cell may not have to be stationary, and the geographic area of a cell can move according to the location of a mobile BS. In some examples, BSs can be interconnected with each other and with one or more other BSs or network nodes (not shown) in the wireless network 100 using any suitable transport network via various types of backhaul interfaces, such as direct physical connections, virtual networks, or combinations thereof.

[0053] Wireless network 100 may include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send the transmission of the data to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay transmissions for other UEs. In Figure 1 the example shown in

[0054]

[0055] relay BS 110d can communicate with macro BS 110a and UE 120d to facilitate communication between macro BS 110a and UE 120d. A relay BS may also be referred to as a relay station, relay base station, relay, etc. Network controller 130 may be coupled to the set of BSs and may provide coordination and control of these BSs. Network controller 130 can communicate with each BS via a backhaul. These BSs can also communicate with each other directly or indirectly, e.g., via a wireless or wired backhaul.

[0056] Multiple UEs 120 (e.g., UE 120a, UE 120b, UE 120c, etc.) may be dispersed throughout wireless network 100, and each UE can be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE 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, a camera, a gaming device, a netbook, a smartbook, a ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0057] Some UEs may be considered machine type communication (MTC) devices, or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to a network (e.g., a wide area network such as the Internet or a cellular network) or provide connectivity to the network, for example, via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, or may be implemented as narrowband IoT (NB-IoT) devices. Some UEs may be considered customer premise equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, or other components. In some examples, the processor component and the memory component may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., a memory) may be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, etc.

[0058] Generally, any number of wireless networks may be deployed in a given geographical area. Each wireless network may support a specific RAT and may operate on one or more frequencies. The RAT may also be referred to as a radio technology, an air interface, etc. The frequency may also be referred to as a carrier, a frequency channel, etc. Each frequency may support a single RAT in a given geographical area to avoid interference between wireless networks of different RATs. In some cases, an NR or 5G RAT network may be deployed.

[0059] In some aspects, 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., communicate with each other without using base station 110 as an intermediary). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or similar protocols), mesh networks, or similar networks or a combination thereof. In such examples, UE 120 may perform scheduling operations, resource selection operations, and other operations described elsewhere herein as performed by base station 110.

[0060] Devices of the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, or channels based on frequency or wavelength. For example, devices of the wireless network 100 can communicate using an operating frequency band having a first frequency range (FR1) that can span from 410 MHz to 7.125 GHz. As another example, devices of the wireless network 100 can communicate using an operating frequency band having a second frequency range (FR2) that can span from 24.25 GHz to 52.6 GHz. The frequency between FR1 and FR2 is sometimes referred to as the mid-band frequency. Although a part of FR1 is greater than 6 GHz, FR1 is generally referred to as the "sub-6 GHz band". Similarly, although different from the extremely high frequency (EHF) band (30 GHz - 300 GHz), which is identified by the International Telecommunication Union (ITU) as the "millimeter wave" band, FR2 is generally referred to as the "millimeter wave" band. Thus, unless specifically stated otherwise, it should be understood that the term "sub-6 GHz" can broadly represent frequencies less than 6 GHz, frequencies within FR1, mid-band frequencies (e.g., greater than 7.125 GHz), or a combination thereof. Similarly, unless specifically stated otherwise, it should be understood that the term "millimeter wave" can broadly represent frequencies within the EHF band, frequencies within FR2, mid-band frequencies (e.g., less than 24.25 GHz), or a combination thereof. It is conceivable that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein apply to those modified frequency ranges.

[0061] Figure 2 FIG. 200 is a diagram illustrating an example 200 in which the base station 110 and the UE 120 are in communication in the wireless network 100. The base station 110 may be equipped with T antennas 234a to 234t, and the UE 120 may be equipped with R antennas 252a to 252r, where generally T≥1 and R≥1.

[0062] At base station 110, a transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more modulation and coding schemes (MCSs) for a UE based on a channel quality indicator (CQI) received from each UE, process (e.g., encode and modulate) the data for the UE based on the selected MCS for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals and synchronization. A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process its respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0063] At UE 120, antennas 252a through 252r may receive the downlink signals from base station 110 or other base stations and may provide the received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, down-convert, and digitize) the received signals to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain the received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols, if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide the decoded data for UE 120 to a data sink 260, and provide the decoded control information and system information to a controller / processor 280. The term “controller / processor” may refer to one or more controllers, one or more processors, or a combination thereof. A channel processor may determine a reference signal received power (RSRP), a received signal strength indicator (RSSI), a reference signal received quality (RSRQ), a channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0064] 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.

[0065] On the uplink, at the UE 120, the transmit processor 264 may 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, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 if applicable, further processed by the modulators 254a to 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of the antennas 252, modulators 254, demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, or TX MIMO processors 266. The transceiver may be used by a processor (e.g., the controller / processor 280) and the memory 282 for performing aspects of any of the processes described herein.

[0066] At the base station 110, the uplink signals from the UE 120 and other UEs may be received by the antennas 234, processed by the demodulator 232, detected by the MIMO detector 236 if applicable, and further processed by the receive processor 238 to obtain the decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink communication, uplink communication, or a combination thereof. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of the antennas 234, modulators 232, demodulators 232, MIMO detectors 236, receive processors 238, transmit processors 220, or TX MIMO processors 230. The transceiver may be used by a processor (e.g., the controller / processor 240) and the memory 242 for performing aspects of any of the processes described herein.

[0067] In some implementations, the controller / processor 280 can be a component of a processing system. A "processing system" generally refers to a system or series of machines or components that receives inputs and processes those inputs to produce a set of outputs (which can be passed to other systems or components such as the UE 120). For example, the "processing system of the UE 120" can refer to a system that includes various other components or sub-components of the UE 120.

[0068] The processing system of the UE 120 can interface with other components of the UE 120, and can process information (such as inputs or signals) received from other components, output information to other components, etc. For example, a chip or modem of the UE 120 can include a processing system, a first interface for receiving or obtaining information, and a second interface for outputting, transmitting, or providing information. In some cases, the "first interface" can refer to the interface between the processing system of the chip or modem and the receiver, such that the UE 120 can receive information or signal inputs, and the information can be passed to the processing system. In some cases, the "second interface" can refer to the interface between the processing system of the chip or modem and the transmitter, such that the UE 120 can transmit the information output from the chip or modem. Those of ordinary skill in the art will readily appreciate that the second interface can also obtain or receive information or signal inputs, and the first interface can also output, transmit, or provide information.

[0069] In some implementations, the controller / processor 240 can be a component of a processing system. A "processing system" generally refers to a system or series of machines or components that receives inputs and processes those inputs to produce a set of outputs (which can be passed to other systems or components such as the base station 110). For example, the "processing system of the base station 110" can refer to a system that includes various other components or sub-components of the base station 110.

[0070] The processing system of the base station 110 can interface with other components of the base station 110, and can process information (such as inputs or signals) received from other components, output information to other components, etc. For example, a chip or modem of the base station 110 can include a processing system, a first interface for receiving or obtaining information, and a second interface for outputting, transmitting, or providing information. In some cases, the first interface can refer to the interface between the processing system of the chip or modem and the receiver, such that the base station 110 can receive information or signal inputs, and the information can be passed to the processing system. In some cases, the second interface can refer to the interface between the processing system of the chip or modem and the transmitter, such that the base station 110 can transmit the information output from the chip or modem. Those of ordinary skill in the art will readily appreciate that the second interface can also obtain or receive information or signal inputs, and the first interface can also output, transmit, or provide information.

[0071] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 any other component(s) thereof may perform one or more techniques associated with PUSCH transmission in a joint downlink and uplink TCI state scenario, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, or Figure 2 any other component(s) (or combination of components) thereof may perform or direct Figure 6 the operation of process 600, Figure 7 the operation of process 700, 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 aspects, the memories 242 and 282 may include non-transitory computer-readable media storing one or more instructions (e.g., code or program code) for wireless communication. For example, when the one or more instructions are executed (e.g., directly executed, or after compilation, conversion, or interpretation) by one or more processors of the base station 110 or the UE 120, the one or more processors, the UE 120, or the base station 110 may perform or direct Figure 6 the operation of process 600, Figure 7 the operation of process 700, or other processes as described herein.

[0072] In some aspects, the UE 120 or another wireless communication device may include means for transmitting, to a BS (such as BS 110), sounding reference signals (SRS) for configuring PUSCH communication including a spatial filter corresponding to a TCI state; and means for receiving downlink control information (DCI) for scheduling or activating PUSCH communication based on the SRS, etc., or a combination thereof. In some aspects, such means may include one or more components of the UE 120 described in conjunction with Figure 2 such as the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, one or more antennas 252, the DEMOD 254, the MIMO detector 256, and / or the receive processor 258.

[0073] In some aspects, the base station 110 may include means for receiving SRS associated with configuring PUSCH communication including a spatial filter corresponding to a TCI state; means for transmitting DCI for scheduling or activating PUSCH communication based on the SRS, etc., or a combination thereof. In some aspects, such means may include those combined with Figure 2One or more components of the described base station 110, such as one or more antennas 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and so on.

[0074] Although Figure 2 the blocks in are illustrated as separate components, the functionality described herein with respect to these blocks can be implemented with a single hardware, software, or a combination component or various combinations of components. For example, the functionality described with respect to transmit processor 264, receive processor 258, TX MIMO processor 266, or another processor can be performed by or under the control of controller / processor 280.

[0075] Figure 3 is a diagram illustrating an example of a beamforming architecture 300 that supports beamforming for millimeter wave (mmW) communication. In some aspects, architecture 300 can implement aspects of wireless network 100. In some aspects, architecture 300 can be implemented in a transmitting device (such as, a first wireless communication device, UE, or base station) or a receiving device (such as, a second wireless communication device, UE, or BS), as described herein.

[0076] Broadly, Figure 3 is a diagram illustrating example hardware components of a wireless communication device in accordance with certain aspects of the present disclosure. The illustrated components can include those that can be used for antenna element selection or for beamforming of wireless signal transmission. There are numerous architectures for antenna element selection and for implementing phase shifts, and only one example is illustrated herein. Architecture 300 includes a modem (modulator / demodulator) 302, a digital-to-analog converter (DAC) 304, a first mixer 306, a second mixer 308, and a splitter 310. Architecture 300 also includes a plurality of first amplifiers 312, a plurality of phase shifters 314, a plurality of second amplifiers 316, and an antenna array 318 including a plurality of antenna elements 320.

[0077] A transmission line or other waveguide, wire, trace, or similar connection is shown connecting various components to illustrate how signals to be transmitted can travel between the components. Reference numerals 322, 324, 326, and 328 indicate regions in architecture 300 where different types of signals travel or are processed. Specifically, reference numeral 322 indicates the region where digital baseband signals travel or are processed, reference numeral 324 indicates the region where analog baseband signals travel or are processed, reference numeral 326 indicates the region where analog intermediate frequency (IF) signals travel or are processed, and reference numeral 328 indicates the region where analog radio frequency (RF) signals travel or are processed. The architecture also includes local oscillator A 330, local oscillator B 332, and controller / processor 334. In some aspects, controller / processor 334 corresponds to the processor / processor 240 of the base station described above in connection with Figure 2 or the controller / processor 280 of the UE described above in connection with Figure 2

[0078] Each of the antenna elements 320 may include one or more sub-elements for radiating or receiving RF signals. For example, a single antenna element 320 may include a first sub-element that is cross-polarized with a second sub-element, and the second sub-element may be used to independently transmit cross-polarized signals. The antenna elements 320 may include patch antennas, dipole antennas, or other types of antennas arranged in a linear pattern, two-dimensional pattern, or other pattern. The spacing between the antenna elements 320 may be such that signals having a desired wavelength transmitted separately by the antenna elements 320 can interact or interfere (such as to form a desired beam). For example, given an expected range of wavelengths or frequencies, the spacing may provide a quarter wavelength, a half wavelength, or other fraction of a wavelength of the spacing between adjacent antenna elements 320 to allow interaction or interference of signals transmitted by the individual antenna elements 320 within the expected range.

[0079] ​The modem 302 processes and generates a digital baseband signal and may also control the operation of the DAC 304, the first and second mixers 306 and 308, the splitter 310, the first amplifier 312, the phase shifter 314, or the second amplifier 316 to transmit signals via one or more or all of the antenna elements 320. The modem 302 may process signals and control operations according to communication standards such as the wireless standards discussed herein. The DAC 304 may convert the digital baseband signal received from (and to be transmitted by) the modem 302 into an analog baseband signal. The first mixer 306 uses the local oscillator A 330 to up-convert the analog baseband signal to an analog IF signal within the IF. For example, the first mixer 306 may mix the signal with the oscillating signal generated by the local oscillator A 330 to "shift" the baseband analog signal to the IF. In some cases, some processing or filtering (not shown) may be performed at the IF. The second mixer 308 uses the local oscillator B 332 to up-convert the analog IF signal to an analog RF signal. Similar to the first mixer, the second mixer 308 may mix the signal with the oscillating signal generated by the local oscillator B 332 to "shift" the IF analog signal to the RF, or the frequency at which the signal will be transmitted or received. The modem 302 or the controller / processor 334 may adjust the frequency of the local oscillator A 330 or the local oscillator B 332 such that the desired IF or RF frequency is generated and used to facilitate the processing and transmission of signals within the desired bandwidth.

[0080] In the illustrated architecture 300, the signal up-converted by the second mixer 308 is split or replicated into multiple signals by the splitter 310. The splitter 310 in the architecture 300 splits the RF signal into multiple identical or nearly identical RF signals. In other examples, any type of signal (including a baseband digital signal, a baseband analog signal, or an IF analog signal) may be split. Each of these signals may correspond to an antenna element 320, and the signal travels through or is processed by the amplifiers 312 and 316, the phase shifter 314, or other elements corresponding to the respective antenna element 320 to be provided to and transmitted by the respective antenna element 320 of the antenna array 318. In one example, the splitter 310 may be an active splitter that is connected to a power supply and provides some gain such that the RF signal leaving the splitter 310 is at a power level equal to or greater than the signal entering the splitter 310. In another example, the splitter 310 is a passive splitter that is not connected to a power supply, and the RF signal leaving the splitter 310 may be at a power level lower than the RF signal entering the splitter 310.

[0081] After being split by splitter 310, the resulting RF signals can enter an amplifier (such as first amplifier 312) or a phase shifter 314 corresponding to antenna element 320. The first and second amplifiers 312 and 316 are illustrated in dashed lines because in some aspects, one or both of them may not be necessary. In some aspects, both the first amplifier 312 and the second amplifier 316 are present. In some aspects, neither the first amplifier 312 nor the second amplifier 316 is present. In some aspects, one of the two amplifiers 312 and 316 is present, but the other is not. As an example, if splitter 310 is an active splitter, the first amplifier 312 may not be used. As a further example, if phase shifter 314 is an active phase shifter that can provide gain, the second amplifier 316 may not be used.

[0082] Amplifiers 312 and 316 can provide a desired level of positive or negative gain. Positive gain (positive dB) can be used to increase the amplitude of the signal to be radiated by a particular antenna element 320. Negative gain (negative dB) can be used to decrease the amplitude of the signal radiated by a particular antenna element or to suppress its radiation. Each of amplifiers 312 and 316 can be independently controlled (e.g., by modem 302 or controller / processor 334) to provide independent control of the gain for each antenna element 320. For example, modem 302 or controller / processor 334 may have at least one control line connected to each of splitter 310, first amplifier 312, phase shifter 314, or second amplifier 316, which can be used to configure the gain to provide a desired amount of gain for each component and thus for each antenna element 320.

[0083] Phase shifter 314 can provide a configurable phase shift or phase offset to the corresponding RF signal to be transmitted. Phase shifter 314 can be a passive phase shifter that is not directly connected to a power source. A passive phase shifter may introduce some insertion loss. Second amplifier 316 can enhance the signal to compensate for the insertion loss. Phase shifter 314 can be an active phase shifter connected to a power source such that the active phase shifter provides a certain amount of gain or prevents insertion loss. The setting of each phase shifter 314 is independent, which means that each phase shifter can be independently set to provide a desired amount of phase shift or the same amount of phase shift or some other configuration. Modem 302 or controller / processor 334 may have at least one control line connected to each phase shifter 314, and the at least one control line can be used to configure phase shifter 314 to provide a desired amount of phase shift or phase offset between antenna elements 320.

[0084] In the illustrated architecture 300, an RF signal received by antenna element 320 is provided to one or more first amplifiers 356 to enhance the signal strength. The first amplifier 356 may be connected to the same antenna array 318 (such as for time division duplex (TDD) operation). The first amplifier 356 may be connected to different antenna arrays 318. The enhanced RF signal is input into one or more phase shifters 354 to provide a configurable phase shift or phase offset for the corresponding received RF signal to enable reception via one or more Rx beams. The phase shifter 354 may be an active phase shifter or a passive phase shifter. The settings of each phase shifter 354 are independent, which means that each phase shifter can be independently set to provide a desired amount of phase shift or the same amount of phase shift or some other configuration. The modem 302 or the controller / processor 334 may have at least one control line connected to each phase shifter 354, and the at least one control line may be used to configure the phase shifter 354 to provide a desired amount of phase shift or phase offset between the antenna elements 320 to enable reception via one or more Rx beams.

[0085] The output of the phase shifter 354 may be input into one or more second amplifiers 352 for signal amplification of the phase-shifted received RF signal. The second amplifier 352 may be individually configured to provide a configured amount of gain. The second amplifier 352 may be individually configured to provide an amount of gain to ensure that the signals input into the combiner 350 have the same amplitude. The amplifiers 352 and 356 are illustrated in dashed lines because they may not be necessary in some aspects. In some aspects, both the amplifier 352 and the amplifier 356 are present. In another aspect, both the amplifier 352 and the amplifier 356 are absent. In other aspects, one of the amplifier 352 and the amplifier 356 is present, but the other is absent.

[0086] In the illustrated architecture 300, the signals output by the phase shifter 354 (via the amplifier 352 when present) are combined in the combiner 350. The combiner 350 in the architecture 300 combines the RF signals into one signal. The combiner 350 may be a passive combiner (e.g., not connected to a power source), which may result in some insertion loss. The combiner 350 may be an active combiner (e.g., connected to a power source), which may result in some signal gain. When the combiner 350 is an active combiner, it may provide different (such as configurable) amounts of gain for each input signal so that the input signals have the same amplitude when combined. When the combiner 350 is an active combiner, the combiner 350 may not require the second amplifier 352 because the active combiner can provide signal amplification.

[0087] The output of combiner 350 is input to mixers 348 and 346. Mixers 348 and 346 typically down-convert the received RF signals using inputs from local oscillators 372 and 370 respectively to produce intermediate or baseband signals carrying the encoded and modulated information. The outputs of mixers 348 and 346 are input to an analog-to-digital converter (ADC) 344 for conversion to digital signals. The digital signals output from ADC 344 are input to modem 302 for baseband processing such as decoding, deinterleaving, or similar operations.

[0088] Architecture 300 is given by way of example only to illustrate an architecture for transmitting or receiving signals. In some cases, architecture 300 or each part of architecture 300 may be repeated multiple times within the architecture to accommodate or provide any number of RF chains, antenna elements, or antenna panels. Additionally, numerous alternative architectures are possible and contemplated. For example, while only a single antenna array 318 is shown, two, three, or more antenna arrays may be included, each having one or more of its own respective amplifiers, phase shifters, splitters, mixers, DACs, ADCs, or modems. For example, a single UE may include two, four, or more antenna arrays for transmitting or receiving signals at different physical locations or in different directions on the UE.

[0089] In addition, mixers, splitters, amplifiers, phase shifters, and other components may be located in different signal type regions (e.g., represented by different reference numerals among reference numerals 322, 324, 326, 328) in different implementation architectures. For example, in different examples, splitting the signal to be transmitted into multiple signals may occur at analog RF, analog IF, analog baseband, or digital baseband frequencies. Similarly, amplification or phase shifting may also occur at different frequencies. For example, in some aspects, one or more of splitter 310, amplifiers 312 and 316, or phase shifter 314 may be located between DAC 304 and first mixer 306 or between first mixer 306 and second mixer 308. In one example, the functionality of one or more components may be combined into one component. For example, phase shifter 314 may perform amplification to include or replace first amplifier 312 or second amplifier 316. As another example, phase shifting may be implemented by second mixer 308 to eliminate the need for a separate phase shifter 314. This technique is sometimes referred to as local oscillator (LO) phase shifting. In some aspects of this configuration, there may be multiple IF-to-RF mixers (such as for each antenna element chain) within second mixer 308, and local oscillator B 332 may provide different local oscillator signals (with different phase offsets) to each IF-to-RF mixer.

[0090] The modem 302 or the controller / processor 334 may control one or more of the other components 304 to 372 to select one or more antenna elements 320 or to form a beam for transmitting one or more signals. For example, the antenna elements 316 may be individually selected or deselected for signal (or signals) transmission by controlling the amplitude of one or more corresponding amplifiers, such as the first amplifier 312 or the second amplifier 316. Beamforming includes using multiple signals on different antenna elements to generate a beam, where one or more or all of the multiple signals are phase-offset relative to each other. The formed beam may carry physical or higher layer reference signals or information. When each of the multiple signals radiates from the respective antenna element 320, the radiated signals interact, interfere (constructively and destructively), and amplify each other to form the resulting beam. The shape (such as the amplitude, width, or presence of sidelobes) and direction (such as the angle of the beam relative to the surface of the antenna array 318) can be dynamically controlled by modifying the phase shift or phase offset imparted to the multiple signals relative to each other by the phase shifters 314 and the amplitudes imparted by the amplifiers 312 and 316. The controller / processor 334 may be partially or fully located within one or more other components of the architecture 300. For example, in some aspects, the controller / processor 334 may be located within the modem 302.

[0091] Figure 4 is a diagram illustrating an example 400 of communication using beams between a BS and a UE. As Figure 4 shown, the base station 110 and the UE 120 may communicate with each other.

[0092] The base station 110 may transmit to the UE 120 located within the coverage area of the base station 110. The base station 110 and the UE 120 may be configured for beamformed communication, where the base station 110 may transmit in the direction of the UE 120 using a directional BS transmit beam, and the UE 120 may receive the transmission using a directional UE receive beam. Each BS transmit beam may have an associated beam ID, beam direction, or beam symbol, etc. The base station 110 may transmit downlink communication via one or more BS transmit beams 405.

[0093] UE 120 may attempt to receive a downlink transmission via one or more UE receive beams 410, which may be configured with different beamforming parameters at the receiving circuitry of UE 120. UE 120 may identify a particular BS transmit beam 405 (shown as BS transmit beam 405-A) and a particular UE receive beam 410 (shown as UE receive beam 410-A) that provide relatively good performance (e.g., having the best channel quality among different measured combinations of BS transmit beam 405 and UE receive beam 410). In some examples, UE 120 may transmit an indication of which BS transmit beam 405 UE 120 identifies as the preferred BS transmit beam, and the base station 110 may select the preferred BS transmit beam for transmission to UE 120. Thus, UE 120 may obtain and maintain a beam pair link (BPL) with the base station 110 for downlink communication (e.g., the combination of BS transmit beam 405-A and UE receive beam 410-A), which may be further refined and maintained according to one or more established beam refinement procedures.

[0094] Downlink beams such as BS transmit beam 405 or UE receive beam 410 may be associated with a TCI state. The TCI state may indicate the directionality or characteristics of the downlink beam, such as one or more QCL attributes of the downlink beam. The QCL attributes may include, for example, Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameters, etc. In some examples, each BS transmit beam 405 may be associated with an SSB, and UE 120 may indicate the preferred BS transmit beam 405 by transmitting an uplink transmission in the resources of the SSB associated with the preferred BS transmit beam 405. A particular SSB may have an associated TCI state (e.g., for an antenna port or for beamforming). In some examples, the base station 110 may indicate the downlink BS transmit beam 405 based on the antenna port QCL attributes that may be indicated by the TCI state. For different QCL types (e.g., different combinations of QCL types for Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameters, etc.), the TCI state may be associated with a set of downlink reference signals (e.g., SSB, and aperiodic, periodic, or semi-persistent CSI-RS). In the case where the QCL type indicates spatial reception parameters, the QCL type may correspond to the analog receive beamforming parameters of the UE receive beam 410 at UE 120. Thus, UE 120 may select the corresponding UE receive beam 410 from the set of BPLs based on the base station 110 indicating the BS transmit beam 405 via TCI indication.

[0095] Base station 110 may maintain an activated set of TCI states for downlink shared channel transmission and an activated set of TCI states for downlink control channel transmission. The activated set of TCI states for downlink shared channel transmission may correspond to the beams that base station 110 uses for downlink transmission on the physical downlink shared channel (PDSCH). The activated set of TCI states for downlink control channel communication may correspond to the beams that base station 110 may use for downlink transmission on the physical downlink control channel (PDCCH) or in a control resource set (CORESET). UE 120 may also maintain an activated set of TCI states for receiving downlink shared channel transmission and CORESET transmission. If a TCI state is activated for UE 120, UE 120 may have one or more antenna configurations based on that TCI state, and UE 120 may not have to reconfigure the antennas or the antenna weighting configuration. In some examples, the set of activated TCI states for UE 120 (e.g., the activated PDSCH TCI state and the activated CORESET TCI state) may be configured via a configuration message (such as a radio resource control (RRC) message).

[0096] Similarly, for uplink communication, UE 120 may transmit in the direction of base station 110 using a directional UE transmit beam, and base station 110 may receive the transmission using a directional BS receive beam. Each UE transmit beam may have an associated beam ID, beam direction, or beam symbol, etc. UE 120 may transmit uplink communication via one or more UE transmit beams 415.

[0097] Base station 110 may receive uplink communications via one or more BS receive beams 420. The base station 110 may identify a particular UE transmit beam 415 (shown as UE transmit beam 415-A) and a particular BS receive beam 420 (shown as BS receive beam 420-A) that provide relatively good performance (e.g., which has the best channel quality among different measured combinations of UE transmit beam 415 and BS receive beam 420). In some examples, the base station 110 may transmit an indication of which UE transmit beam 415 the base station 110 identifies as the preferred UE transmit beam, and the base station 110 may select the preferred UE transmit beam for transmissions from the UE 120. Thus, the UE 120 and the base station 110 may obtain and maintain a BPL for uplink communications (e.g., the combination of UE transmit beam 415-A and BS receive beam 420-A), which may be further refined and maintained according to one or more established beam refinement procedures. Uplink beams such as UE transmit beam 415 or BS receive beam 420 may be associated with a spatial relationship. The spatial relationship may indicate the directivity or characteristics of the uplink beam, similar to one or more QCL attributes as described herein.

[0098] Figure 5 is a diagram illustrating example 500 related to PUSCH transmission in a joint downlink and uplink TCI state scenario. Figure 5 As shown, base station (BS) 110 and UE 120 may communicate with each other on a Figure 1 wireless network 100 such as. Although some aspects are described herein in terms of BS 110 and UE 120, other network scenarios may be possible, such as a multi-TRP (mTRP) scenario, as described in more detail herein. The BS 110 may send data or control information to the UE 120 on the downlink, and the UE 120 may send data or control information to the BS 110 on the uplink.

[0099] As indicated by reference numeral 505, UE 120 may transmit and BS 110 may receive SRS. For example, UE 120 may be configured to have one or more SRS resource sets with the usage set to the RRC parameter "codebook". Further by way of example, each resource set may have one or more SRS resources. In this example, UE 120 may transmit and BS 110 may receive one or more SRS resources in one or more SRS resource sets with the usage set to "codebook" in combination with codebook-based PUSCH. Alternatively, UE 120 may be configured to have one or more SRS resource sets with the usage set to the RRC parameter "non-codebook". Further by way of alternative example, each resource set may have one or more SRS resources. In this case, UE 120 may transmit and BS 110 may receive one or more SRS resources in one or more SRS resource sets with the usage set to "non-codebook" in combination with non-codebook-based PUSCH. In some aspects, UE 120 may use a spatial transmit filter for transmitting SRS in combination with codebook-based or non-codebook-based PUSCH. For example, UE 120 may use a spatial transmit filter indicated by the joint downlink and uplink TCI state received from BS 110 for transmitting SRS. The spatial transmit filter may shape the distribution of the transmitted energy (such as in MIMO transmission mode) to avoid interference with other communications occurring concurrently with, for example, SRS.

[0100] In some aspects, the UE 120 may determine a spatial transmission filter based on the spatial relation information or QCL information in the TCI state. For example, the UE 120 may use the spatial relation information of the PUSCH to identify the spatial relation information or the TCI state (joint downlink and uplink TCI state), and may use the spatial relation information to determine the spatial transmission filter for transmitting the PUSCH. In some cases, one or more SRS resources and subsequent PUSCH communications are indicated by the same joint downlink and uplink TCI state, uplink (only) TCI state, or spatial relation information, etc. In some cases, the spatial transmission filter determined in the joint TCI state, uplink TCI state, or the spatial relation information indicated for the subsequent PUSCH may be one of the spatial transmission filters determined in the joint TCI state, uplink TCPI state, or the spatial relation information indicated for one or more SRS resources in combination with the PUSCH. In some cases, the joint TCI state, uplink TCI state, or the spatial relation information indicated for the subsequent PUSCH may be one of the joint TCI state, uplink TCPI state, or the spatial relation information indicated for one or more SRS resources in combination with the PUSCH. In some other cases, the PUSCH may be associated with the joint TCI state, UL TCI state, or spatial relation information, which is used by one or more SRS resources and selected or activated by DCI, as described herein.

[0101] In some aspects, the TCI indicating the above TCI state may include an identifier (ID). For example, the ID may be alphanumeric, hexadecimal, or other data types including information identifying the TCI. In some aspects, the identifier may be in a field for a common beam configuration. Alternatively, the identifier may be in a field shared among the common beam configuration, downlink beam configuration, and uplink beam configuration. For example, the identifier may be included in the tci-StateId field or other similar data fields defined by 3GPP specifications.

[0102] One or more reference signals indicated by TCI may include synchronization signals (such as SSB), CSI-RS, sounding reference signals (SRS), positioning reference signals (PRS), physical random access channel (PRACH), demodulation reference signals (DMRS), or a combination thereof. DMRS may include DMRS for PDSCH, PDCCH, physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), or other similar channels. One or more reference signals may provide one or more attributes for a beam through one or more QCL rules. For example, TCI may include one or more QCL information data structures defined by 3GPP specifications, or other similar data structures that define QCL rules. The QCL rules may indicate one or more attributes provided by one or more reference signals.

[0103] One or more attributes of a beam may be spatial, temporal, or other attributes related to the physical attributes of the beam. For example, one or more attributes may include Doppler shift (such as when the QCL rule is a QCL type A assumption, QCL type B assumption, or QCL type C assumption), Doppler spread (such as when the QCL rule is a QCL type A assumption or QCL type B assumption), average delay (such as when the QCL rule is a QCL type A assumption or QCL type C assumption), delay spread (such as when the QCL rule is a QCL type A assumption), spatial receive filter (such as when the QCL rule is a QCL type D assumption), spatial relationship information for transmission, or a combination thereof.

[0104] As indicated by reference numeral 510, the BS 110 may transmit, and the UE 120 may receive DCI communications. For example, the UE 120 may receive DCI transmissions based on transmitting one or more SRS resources in combination with codebook-based PUSCH or non-codebook-based PUSCH. In some aspects, the BS 110 may transmit DCI to trigger the UE 120 to transmit PUSCH communications. For example, the BS 110 may transmit DCI to schedule PUSCH communications. Alternatively, the BS 110 may transmit DCI to activate the transmission of PUSCH communications. In some aspects, the BS 110 may include information identifying a transmission precoding matrix indicator (TPMI) or transmission rank in the DCI. For example, the BS 110 may determine the TPMI or transmission rank based on one or more SRS resources in combination with the PUSCH, and may include the TPMI or transmission rank in the DCI to configure the transmission parameters of the UE 120 for the transmission of PUSCH communications. In some aspects, the DCI may include an SRI indicating a selected SRS resource in one or more transmitted SRS resources that is combined with the PUSCH, and the UE 120 may derive precoding and rank information for the transmission of non-codebook-based PUSCH communications from the SRI. In some aspects, the UE may use the same antenna port or antenna ports as the SRS port or ports in the SRS resource indicated by the DCI to transmit PUSCH communications. For example, when the SRS for the SRS resource indicator (SRI) is indicated by a DL and UL joint TCI state or a UL (only) TCI state, the UE may use the same antenna port for PUSCH communications as indicated by the DCI.

[0105] As indicated by reference numeral 515, the UE 120 may transmit, and the BS 110 may receive PUSCH communications. For example, the UE 120 may transmit PUSCH communications based on receiving DCI that schedules or activates the transmission of PUSCH communications. In some aspects, the UE 120 may determine an SRI or TCI state for the PUSCH communications based on the DCI. For example, when the UE 120 receives DCI that schedules PUSCH communications, the DCI may include information identifying the SRI or TCI state for the PUSCH communications.

[0106] Alternatively, in a case where a single SRS resource or a single set of SRS resources is configured for PUSCH communication, and a single combined downlink and uplink TCI state or an uplink (only) TCI state is used to indicate the single SRS resource or the single set of SRS resources, the DCI may not include information identifying the SRI or TCI state for the PUSCH communication. In such a case, the PUSCH communication may be codebook-based. For example, UE 120 may use the TCI state indicated for the single SRS or the single set of SRS resources configured as the TCI state for the PUSCH communication. Similarly, in a multi-TRP deployment, such as when separate DCI schedules transmissions or receptions associated with separate TRPs, the received DCI for scheduling PUSCHs associated with different TRPs may not include SRI information or TCI state information. As a result, a wireless communication device (which may correspond to UE 120 described herein) may determine the spatial relation information, the TCI state, or the spatial transmit filter for the PUSCH communication scheduled by the DCI associated with the TRP based on, for example, spatial relation information, the TCI state, or the spatial transmit filter of the single SRS resource or the single set of SRS resources associated with the same TRP.

[0107] Additionally or alternatively, in a case where multiple SRS resources or multiple sets of SRS resources are configured for PUSCH communication and multiple different combined downlink and uplink TCI states or uplink (only) TCI states are configured, UE120 may determine the TCI situation for the PUSCH communication based on the TCI state indicated in the DCI (if a TCI state is indicated in the DCI). In such cases, the PUSCH communication may be codebook-based. When no TCI state is indicated in the DCI, UE 120 may select the TCI state indicated by the SRI used by at least one of the multiple SRS resources. In some aspects, multiple SRS resources or multiple sets of SRS resource data are configured for PUSCH communication and multiple different combined downlink and uplink TCI states or uplink (only) TCI states are configured. In such aspects, UE 120 may determine the TCI state, the spatial relation information, or the spatial transmit filter, etc., for the PUSCH communication based on the SRI indication (if SRI is indicated in the DCI) identifying the SRS or the set of SRS resources indicated in the DCI.

[0108] Additionally or alternatively, for non-codebook-based PUSCH communication, when the DCI does not include information identifying the TCI state for the PUSCH communication, UE 120 may apply the same TCI state applied to each selected SRS resource (selected based on the SRI indication in the DCI as described herein) to each layer of the PUSCH communication. The selected SRS resource among one or more transmitted SRS resources or SRS resource sets may be indicated by the corresponding SRI in the DCI that schedules the PUSCH communication. Conversely, when the DCI does include information identifying the TCI state, UE 120 may apply the indicated TCI state sequentially to each layer of the PUSCH communication.

[0109] In some aspects, UE 120 may transmit PUSCH communication using a selected antenna port. For example, UE 120 may transmit SRS communication using a selected radio port and may transmit PUSCH communication using the same selected antenna port. In some aspects, UE 120 may select the antenna port based on an indication included in the DCI.

[0110] Figure 6 is a diagram illustrating an example process 600 performed by a wireless communication device, such as a UE. Process 600 is an example in which a wireless communication device (such as, Figure 1 UE 120 or Figure 8 device 800, etc.) performs operations associated with PUSCH transmission in a joint downlink and uplink TCI state scenario.

[0111] As Figure 6 shown, in some aspects, process 600 may include transmitting to the BS an SRS for configuring PUSCH communication that includes a spatial filter corresponding to a TCI state (block 610). For example, a wireless communication device (such as, by using Figure 8 transmission component 804 depicted) may transmit to the BS an SRS for configuring PUSCH communication that includes a spatial filter corresponding to a TCI state, as described herein.

[0112] As Figure 6 shown, in some aspects, process 600 may include receiving, based on the SRS, DCI that schedules or activates the PUSCH communication (block 620). For example, a wireless communication device (such as, by using Figure 8 receiving component 802 depicted) may receive, based on the SRS, DCI that schedules or activates the PUSCH communication, as described herein.

[0113] Process 600 may include additional aspects, such as any individual aspect or any combination of aspects described below or in conjunction with one or more other processes described elsewhere herein.

[0114] In a first additional aspect, the PUSCH communication is codebook-based PUSCH communication.

[0115] In a second additional aspect, either alone or in combination with the first aspect, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state.

[0116] In a third additional aspect, either alone or in combination with one or more of the first and second aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or the spatial reference signal of the TCI state.

[0117] In a fourth additional aspect, either alone or in combination with one or more of the first to third aspects, the DCI identifies the transmitted precoding matrix indicator, or the transmission rank determined based on the SRS.

[0118] In a fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, the DCI identifies the TCI state, or the SRI, for the PUSCH communication.

[0119] In a sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, the process 600 includes determining the TCI state for the PUSCH communication based on the DCI.

[0120] In a seventh additional aspect, either alone or in combination with one or more of the first to sixth aspects, the DCI does not include information identifying the TCI state, and the process 600 includes determining the TCI state for the PUSCH communication based on the SRS.

[0121] In an eighth additional aspect, either alone or in combination with one or more of the first to seventh aspects, transmitting the SRS includes transmitting the SRS using an antenna port; and transmitting the PUSCH communication using an antenna port.

[0122] In a ninth additional aspect, either alone or in combination with one or more of the first to eighth aspects, the PUSCH communication is non-codebook PUSCH communication.

[0123] In a tenth additional aspect, either alone or in combination with one or more of the first to ninth aspects, the TCI state is applied to the PUSCH on a per-layer basis.

[0124] In an eleventh additional aspect, either alone or in combination with one or more of the first to tenth aspects, the wireless communication device is a UE or a TRP.

[0125] In a twelfth additional aspect, either alone or in combination with one or more of the first to eleventh aspects, the DCI is an mDCI, and the wireless communication device operates in an mTRP communication mode.

[0126] Although Figure 6 illustrative boxes of process 600 are shown, in some aspects, process 600 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently compared to those depicted in Figure 6 . Additionally or alternatively, two or more boxes of process 600 may be executed in parallel.

[0127] Figure 7 is a diagram illustrating an example process 700 performed, for example, by a BS. Process 700 is an example where a BS (such as, Figure 1 BS 110 of Figure 9 or device 900 of

[0128] as Figure 7 shown, in some aspects, process 700 may include receiving a sounding reference signal (SRS) associated with configuring a physical uplink shared channel (PUSCH) communication that includes a spatial filter corresponding to a transmit configuration indicator (TCI) state (block 710). For example, a BS (such as, by using the receiving component 902 depicted in Figure 9 ) may receive an SRS associated with configuring a PUSCH communication that includes a spatial filter corresponding to a TCI state, as described herein.

[0129] as Figure 7 shown, in some aspects, process 700 may include transmitting downlink control information (DCI) for scheduling or activating a PUSCH communication based on the SRS (block 720). For example, a BS (such as, by using the transmitting component 904 depicted in Figure 9 ) may transmit DCI for scheduling or activating a PUSCH communication based on the SRS, as described herein.

[0130] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below or in combination with one or more other processes described elsewhere herein.

[0131] In a first additional aspect, the PUSCH communication is a codebook-based PUSCH communication.

[0132] In a second additional aspect, either alone or in combination with the first aspect, the TCI state is a joint downlink and uplink TCI state or an uplink TCI state.

[0133] In a third additional aspect, either alone or in combination with one or more of the first and second aspects, another spatial transmit filter of the SRS corresponds to the TCI state, or a spatial reference signal of the TCI state.

[0134] In a fourth additional aspect, alone or in combination with one or more of the first to third aspects, the DCI identifies the transmitted precoding matrix indicator or the transmission rank determined based on the SRS.

[0135] In a fifth additional aspect, alone or in combination with one or more of the first to fourth aspects, the DCI identifies the TCI state for PUSCH communication or the SRI.

[0136] In a sixth additional aspect, alone or in combination with one or more of the first to fifth aspects, process 700 includes determining the TCI state for PUSCH communication based on the DCI.

[0137] In a seventh additional aspect, alone or in combination with one or more of the first to sixth aspects, the DCI does not include information identifying the TCI state, and wherein process 700 includes determining the TCI state for PUSCH communication based on the SRS.

[0138] In an eighth additional aspect, alone or in combination with one or more of the first to seventh aspects, receiving the SRS includes receiving the SRS using an antenna port; and receiving PUSCH communication using an antenna port.

[0139] In a ninth additional aspect, alone or in combination with one or more of the first to eighth aspects, the PUSCH communication is non-codebook PUSCH communication.

[0140] In a tenth additional aspect, alone or in combination with one or more of the first to ninth aspects, the TCI state is applied to the PUSCH on a per-layer basis.

[0141] In an eleventh additional aspect, alone or in combination with one or more of the first to tenth aspects, the DCI is mDCI, and the UE operates in the mTRP communication mode.

[0142] Although Figure 7 example boxes of process 700 are shown, in some aspects, process 700 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently compared to the boxes depicted in Figure 7 Additionally or alternatively, two or more boxes of process 700 may be executed in parallel.

[0143] Figure 8is a block diagram of an example apparatus 800 for wireless communication. The apparatus 800 can be a UE, or the UE can include the apparatus 800. In some aspects, the apparatus 800 includes a receiving component 802 and a transmitting component 804, which can be in communication with each other (e.g., via one or more buses or one or more other components). Additionally or alternatively, the apparatus 800 can be another type of wireless communication device, such as a TRP (in a multi-TRP deployment) As shown, the apparatus 800 can use the receiving component 802 and the transmitting component 804 to communicate with another apparatus 806 (such as, Figure 2 UE 120 of, Figure 2 BS 110 of, or another wireless communication device). As further shown, the apparatus 800 can include a determining component 808.

[0144] In some aspects, the apparatus 800 can be configured to perform one or more operations described herein in connection with Figure 5 Additionally or alternatively, the apparatus 800 can be configured to perform one or more processes described herein, such as Figure 6 process 600 of, etc. In some aspects, the apparatus 800 or Figure 8 one or more components shown in can include one or more components of the UE described above in connection with Figure 2 Additionally or alternatively, Figure 8 one or more components shown in can be implemented within one or more components described above in connection with Figure 2 Additionally or alternatively, one or more components in this set of components can be implemented at least partially as software stored in a memory. For example, a component (or a part of a component) can be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or a processor to perform the functions or operations of the component.

[0145] The receiving component 802 can receive communications (such as reference signals, control information, data communications, or combinations thereof) from the apparatus 806. The receiving component 802 can provide the received communications to one or more other components of the apparatus 800. In some aspects, the receiving component 802 can perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding and other examples), and can provide the processed signals to one or more other components of the apparatus 806. In some aspects, the receiving component 802 can include one or more antennas, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof of the UE described above in connection with Figure 2 In some aspects, the receiving component 802 can be a component of a processing system. For example, the processing system of the apparatus 800 can refer to a system including various other components or sub-components of the apparatus 800.

[0146] The transmission component 804 may transmit communications (such as reference signals, control information, data communications, or combinations thereof) to the device 806. In some aspects, one or more other components of the device 806 may generate communications and may provide the generated communications to the transmission component 804 for transmission to the device 806. In some aspects, the transmission component 804 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, coding, etc.) on the generated communications and may transmit the processed signals to the device 806. In some aspects, the transmission component 804 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the UE described above in conjunction with Figure 2 The transmission component 804 may be co-located with the receiving component 802 in a transceiver. In some aspects, the transmission component 804 may be a component of a processing system.

[0147] The processing system of the device 800 may interface with other components of the device 800 and may process information (such as inputs or signals) received from other components, output information to other components, etc. For example, the chip or modem of the device 800 may include a processing system, a receiving component 802 for receiving or obtaining information, and a transmission component 804 for outputting, transmitting, or providing information. In some cases, the receiving component 802 may refer to the interface between the processing system of the chip or modem and the receiver, such that the device 800 may receive information or signal inputs and the information may be passed to the processing system. In some cases, the transmission component 804 may refer to the interface between the processing system of the chip or modem and the transmitter, such that the device 800 may transmit the information output from the chip or modem. Those of ordinary skill in the art will readily appreciate that the second interface may also obtain or receive information or signal inputs, and the first interface may also output, transmit, or provide information.

[0148] In some aspects, the transmission component 804 may transmit SRS. For example, the transmission component 804 may transmit one or more SRS resources for codebook-based or non-codebook-based PUSCH communications. In some aspects, the receiving component 802 may receive DCI scheduling PUSCH communications from the device 806 and based on the SRS transmitted by the transmission component 804, where the DCI includes, for example, an indication of TCI or SRI, etc. In some aspects, the receiving component 802 may receive DCI scheduling or activating the transmission of PUSCH communications based on the SRS transmitted by the transmission component 804.

[0149] In some aspects, determination component 808 may determine parameters associated with joint downlink and uplink TCI, such as spatial filters or other spatial relationship parameters. For example, determination component 808 may determine a TCI state for PUSCH communication based on DCI or SRS, etc. In some aspects, determination component 808 may include the transmit processor, receive processor, controller / processor, memory, or a combination thereof of the UE described above in conjunction with Figure 2 The number and arrangement of the components shown in

[0150] Figure 8 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components compared to those shown in Figure 8 In addition, Figure 8 two or more of the components shown in Figure 8 may be implemented in a single component, or Figure 8 a single component shown in Figure 8 may be implemented as multiple distributed components. Additionally or alternatively, Figure 8 a set of components (e.g., one or more components) shown in Figure 8 may perform one or more functions described as being performed by Figure 8 another set of components shown in

[0151] Figure 9 is a block diagram of an example apparatus 900 for wireless communication. Apparatus 900 may be a base station, or a base station may include apparatus 900. In some aspects, apparatus 900 includes a receiving component 902 and a transmitting component 904, which may be in communication with each other (e.g., via one or more buses or one or more other components). As shown, apparatus 900 may use receiving component 906 and transmitting component 902 to communicate with another apparatus 904 (such as Figure 2 UE 120 of Figure 2 BS 110 of Figure 2 or another wireless communication device). As further shown, apparatus 900 may include a determination component 908 and other examples.

[0152] In some aspects, apparatus 900 may be configured to perform one or more operations described herein in conjunction with Figure 5 Additionally or alternatively, apparatus 900 may be configured to perform one or more processes described herein, such as Figure 7 process 700 of Figure 7 etc. In some aspects, apparatus 900 or Figure 9 one or more components shown in Figure 2 may include one or more components of the base station described above in conjunction with Figure 2 Additionally or alternatively, Figure 9 one or more components shown in Figure 2implemented within one or more of the described components. Additionally or alternatively, one or more of the components in the set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the functions or operations of the component.

[0153] The receiving component 902 may receive communications (such as reference signals, control information, data communications, or combinations thereof) from the device 906. The receiving component 902 may provide the received communications to one or more other components of the device 900. In some aspects, the receiving component 902 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 and other examples), and may provide the processed signals to one or more other components of the device 906. In some aspects, the receiving component 902 may include one or more antennas, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof of the base station described above in connection with Figure 2 One or more of the described base stations. In some aspects, the receiving component 902 may be a component of a processing system. For example, the processing system of the device 900 may refer to a system that includes various other components or sub-components of the device 900.

[0154] The transmitting component 904 may transmit communications (such as reference signals, control information, data communications, or combinations thereof) to the device 906. In some aspects, one or more other components of the device 906 may generate the communications and may provide the generated communications to the transmitting component 904 for transmission to the device 906. In some aspects, the transmitting component 904 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, encoding, etc.), and may transmit the processed signals to the device 906. In some aspects, the transmitting component 904 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the base station described above in connection with Figure 2 One or more of the described base stations. In some aspects, the transmitting component 904 may be co-located with the receiving component 902 in a transceiver. In some aspects, the transmitting component 904 may be a component of a processing system.

[0155] The processing system of apparatus 900 may interface with other components of apparatus 900 and may process information (such as inputs or signals) received from other components, output information to other components, etc. For example, a chip or modem of apparatus 900 may include a processing system, a receiving component 902 for receiving or obtaining information, and a transmitting component 904 for outputting, transmitting, or providing information. In some cases, the receiving component 902 may refer to an interface between the processing system of the chip or modem and a receiver, such that apparatus 900 may receive information or signal inputs and the information may be passed to the processing system. In some cases, the transmitting component 904 may refer to an interface between the processing system of the chip or modem and a transmitter, such that apparatus 900 may transmit information output from the chip or modem. Those of ordinary skill in the art will readily appreciate that the second interface may also obtain or receive information or signal inputs, and the first interface may also output, transmit, or provide information.

[0156] In some aspects, the receiving component 902 may receive SRS from, for example, apparatus 906. In some aspects, a determining component 908 may determine parameters associated with joint downlink and uplink TCI, such as a spatial filter or other spatial relationship parameters. For example, the determining component 908 may determine a TCI state for PUSCH communication and may determine the configuration of DCI or SRS such that apparatus 906 can determine the TCI state for PUSCH communication. In some aspects, the determining component 908 may include the transmit processor, receive processor, controller / processor, memory, or combinations thereof of the UE described above in conjunction with Figure 2 In some aspects, the transmitting component 904 may transmit to apparatus 906 DCI that includes, for example, an indication of a TCI state and schedules or activates PUSCH communication.

[0157] Figure 9 The number and arrangement of components shown in Figure 9 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components compared to those shown in Figure 9 In addition, two or more components shown in Figure 9 may be implemented in a single component, or Figure 9 a single component shown in Figure 9 may be implemented as multiple distributed components. Additionally or alternatively, Figure 9 a set of components (e.g., one or more components) shown in Figure 9 may perform one or more functions described as being performed by Figure 9 another set of components shown in

[0158] 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 may be made in light of the above disclosure or may be obtained by practicing the aspects.

[0159] As used herein, the term "component" is intended to be broadly construed as hardware, firmware, or a combination of hardware and software. As used herein, a processor is implemented with hardware, firmware, or a combination of hardware and software. As used herein, the phrase "based on" is intended to be broadly construed as "at least partially based on". As used herein, meeting a threshold may mean that a value is greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, or not equal to the threshold. As used herein, the phrase "at least one of" recited in a list of items refers to any combination of those 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.

[0160] Moreover, 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". Additionally, as used herein, the article "the" is intended to include one or more items referred to in conjunction 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 (e.g., related items, unrelated items, or a combination of related and unrelated items) and may be used interchangeably with "one or more". In instances where only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, the terms "having", "containing", "including", and similar terms are intended to be open-ended terms. Further, as used herein, the term "or" when used in a series is intended to be inclusive and may be used interchangeably with "and / or" unless otherwise expressly stated (e.g., when used in conjunction with "any one of" or "only one of").

[0161] The various illustrative logical, logical block, module, circuit, and algorithmic processes described in connection with the implementations disclosed herein may be implemented as electronic hardware, computer software, or a combination of both. This interchangeability of hardware and software has been described generally in its functional form and is illustrated in the various illustrative components, blocks, modules, circuits, and processes described herein. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

[0162] Hardware and data processing apparatus for implementing the various illustrative logics, logical blocks, modules, and circuits described in connection with the aspects disclosed herein can be implemented or performed using a general-purpose single-chip or multi-chip processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, or any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration). In some aspects, particular processes and methods may be performed by circuitry dedicated to a given function.

[0163] In one or more aspects, the described functionality may be implemented in hardware, digital electronic circuitry, computer software, firmware (including the structures disclosed in this specification and structural equivalents thereof), or in any combination thereof. Aspects of the subject matter described in this specification may also be implemented as one or more computer programs, such as one or more modules of computer program instructions, encoded on a computer storage medium for execution by, or to control the operation of, a data processing apparatus.

[0164] If implemented in software, the functions may be stored on or transmitted via a computer-readable medium as one or more instructions or code. The processes of the methods or algorithms disclosed herein may be implemented in a processor-executable software module that may reside on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that can be implemented to transfer a computer program from one place to another. A storage medium may be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection may also be properly termed a computer-readable medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc, where disks usually reproduce data magnetically and discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media. Additionally, the operations of a method or algorithm may reside as one or more codes and instructions or any combination or set thereof on a machine-readable medium and a computer-readable medium that may be incorporated into a computer program product.

[0165] Various modifications to the aspects described in this disclosure may be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the spirit or scope of the disclosure. Thus, the claims are not intended to be limited to the aspects shown herein but are to be accorded the broadest scope consistent with the disclosure, the principles disclosed herein, and the novel features.

[0166] In addition, those of ordinary skill in the art will readily appreciate that the terms "upper" and "lower" are sometimes used for convenience in describing the figures and indicate relative positions corresponding to the orientation of the figures on a correctly oriented page, and may not reflect the true orientation of any device as implemented.

[0167] Certain features that are described in the context of separate aspects in this specification may also be implemented in combination in a single aspect. Conversely, the various features described in the context of a single aspect may also be implemented separately or in any suitable sub-combination in multiple aspects. Additionally, although features may be described as acting in certain combinations and even initially claimed as such, one or more features from the claimed combination may in some cases be excluded from the combination, and the claimed combination may be directed to a sub-combination or a variant of a sub-combination.

[0168] Similarly, although the operations are depicted in the figures in a particular order, this should not be construed as requiring that such operations be performed in the particular order shown or in sequential order, or that all of the illustrated operations be performed to achieve the desired result. Additionally, the figures may schematically depict one or more example processes in the form of a flowchart. However, other operations not depicted may be incorporated into the example processes schematically illustrated. For example, one or more additional operations may be performed before, after, simultaneously with, or between any of the illustrated operations. In certain environments, multitasking and parallel processing may be advantageous. Moreover, the separation of the various system components in the aspects described herein should not be construed as requiring such separation in all aspects, and it should be understood that the described program components and systems can generally be integrated together in a single software product or packaged into multiple software products. Additionally, other aspects also fall within the scope of the appended claims. In some cases, the acts recited in the claims may be performed in a different order and still achieve the desired result.

Claims

1. A method of wireless communication performed by a device of a wireless communication apparatus, comprising: transmitting a sounding reference signal (SRS) for configuring physical uplink shared channel (PUSCH) communication to a network node, the PUSCH communication including a spatial filter corresponding to a transmission configuration indicator (TCI) state; and receiving downlink control information (DCI) based on the SRS, the DCI scheduling or activating the PUSCH communication having the TCI state.

2. The method according to claim 1, wherein the PUSCH communication is codebook-based PUSCH communication.

3. The method according to claim 1, wherein the TCI state is a joint downlink and uplink TCI state or an uplink TCI state.

4. The method according to claim 1, wherein another spatial transmit filter of the SRS corresponds to: the TCI state, or a spatial reference signal of the TCI state.

5. The method according to claim 1, wherein the DCI identifies: a transmitted precoding matrix indicator, or a transmission rank determined based on the SRS.

6. The method according to claim 1, wherein the DCI identifies: the TCI state for the PUSCH communication, or a sounding reference signal resource indicator (SRI).

7. The method according to claim 6, further comprising: determining the TCI state for the PUSCH communication based on the DCI.

8. The method according to claim 1, wherein the DCI does not include information identifying the TCI state, and the method further comprises: determining the TCI state for the PUSCH communication based on the SRS.

9. The method according to claim 1, wherein transmitting the SRS comprises: transmitting the SRS using an antenna port; and transmitting the PUSCH communication using the antenna port.

10. The method according to claim 1, wherein the PUSCH communication is non-codebook PUSCH communication.

11. The method according to claim 1, wherein the TCI state is applied to the PUSCH on a per-layer basis.

12. The method according to claim 1, wherein the wireless communication device is a user equipment (UE) or a transmit receive point (TRP).

13. The method according to claim 1, wherein the DCI is a multi-DCI (mDCI), and the wireless communication device operates in a multi-transmit receive point (mTRP) communication mode.

14. An apparatus for wireless communication, comprising: a first interface that outputs a sounding reference signal (SRS) for configuring physical uplink shared channel (PUSCH) communication for transmission to a network node, the PUSCH communication including a spatial filter corresponding to a transmission configuration indicator (TCI) state; and a second interface that obtains downlink control information (DCI) based on the SRS, the DCI scheduling or activating the PUSCH communication having the TCI state.

15. The apparatus according to claim 14, wherein the PUSCH communication is codebook-based PUSCH communication.

16. The apparatus according to claim 14, wherein the TCI state is a joint downlink and uplink TCI state or an uplink TCI state.

17. The apparatus according to claim 14, wherein the other spatial transmit filter of the SRS corresponds to: the TCI state, or the spatial reference signal of the TCI state.

18. The apparatus according to claim 14, wherein the DCI identifies: the transmitted precoding matrix indicator, or the transmission rank determined based on the SRS.

19. The apparatus according to claim 14, wherein the DCI identifies: the TCI state for the PUSCH communication, or a sounding reference signal resource indicator (SRI).

20. The apparatus according to claim 19, further comprising a processing system configured to: determine the TCI state for the PUSCH communication based on the DCI.

21. The apparatus according to claim 14, wherein the DCI does not include information identifying the TCI state, and a further processing system is configured to: determine the TCI state for the PUSCH communication based on the SRS.

22. The apparatus according to claim 14, wherein the first interface is configured to: output the SRS using an antenna port; and output the PUSCH communication using the antenna port.

23. The apparatus according to claim 14, wherein the PUSCH communication is non-codebook PUSCH communication.

24. The apparatus according to claim 14, wherein the TCI state is applied to the PUSCH on a per-layer basis.

25. The apparatus according to claim 14, wherein the apparatus is included in a user equipment (UE) or a transmit receive point (TRP).

26. The apparatus according to claim 14, wherein the DCI is a multi-DCI (mDCI), and the apparatus operates in a multi-transmit receive point (mTRP) communication mode.

27. A device for wireless communication, comprising: means for transmitting a sounding reference signal (SRS) for configuring a physical uplink shared channel (PUSCH) communication to a network node, the PUSCH communication including a spatial filter corresponding to a transmission configuration indicator (TCI) state; and means for receiving downlink control information (DCI) based on the SRS, the DCI scheduling or activating the PUSCH communication having the TCI state.

28. The device according to claim 27, wherein the PUSCH communication is codebook-based PUSCH communication.

29. A wireless communication method performed by a device of a network node, comprising: receiving a sounding reference signal (SRS) associated with configuring a physical uplink shared channel (PUSCH) communication, the PUSCH communication including a spatial filter corresponding to a transmission configuration indicator (TCI) state; and Transmit downlink control information (DCI) based on the SRS, where the DCI schedules or activates the PUSCH communication with the TCI state.

30. The method according to claim 29, wherein the PUSCH communication is codebook-based PUSCH communication.

31. The method according to claim 29, wherein the TCI state is a joint downlink and uplink TCI state or an uplink TCI state.

32. The method according to claim 29, wherein another spatial transmit filter of the SRS corresponds to: the TCI state, or the spatial reference signal of the TCI state.

33. An apparatus for wireless communication, comprising: a first interface configured to obtain a sounding reference signal (SRS) associated with configuring physical uplink shared channel (PUSCH) communication, the PUSCH communication including a spatial filter corresponding to a transmission configuration indicator (TCI) state; and a second interface configured to output downlink control information (DCI) for transmission based on the SRS, the DCI scheduling or activating the PUSCH communication with the TCI state.

34. The apparatus according to claim 33, wherein the PUSCH communication is codebook-based PUSCH communication.

35. The apparatus according to claim 33, wherein the TCI state is a joint downlink and uplink TCI state or an uplink TCI state.

36. The apparatus according to claim 33, wherein another spatial transmit filter of the SRS corresponds to: the TCI state, or the spatial reference signal of the TCI state.

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