Uplink transmission configuration display status signaling

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, user equipment (UE) may receive radio resource control (RRC) signaling from a base station that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource. The base station may transmit downlink signaling that identifies, among the plurality of candidate uplink TCI states included in the uplink TCI state pool, an uplink TCI state to be used for transmitting uplink communication through the uplink resource, and the UE may receive this. Accordingly, the UE may transmit uplink communication to the base station through the uplink resource using an uplink transmit beam based at least partially on the uplink TCI state identified in the downlink signaling. Many other aspects are provided.

Description

Technology Field

[0001] The aspects of the present disclosure generally relate to wireless communication and to techniques and apparatus for uplink TCI (transmission configuration indication) status signaling. Background Technology

[0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. Conventional wireless communication systems may utilize multiple-access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-A (LTE-Advanced) is a set of enhancements to the UMTS (Universal Mobile Telecommunications System) mobile standard published by the 3GPP (Third Generation Partnership Project).

[0003] A wireless communication network may include a number of base stations (BS) capable of supporting communication for a number of user equipment (UE). User equipment (UE) can communicate with the base station (BS) via a downlink and an uplink. A downlink (or forward link) refers to a communication link from the BS to the UE, and an uplink (or reverse link) refers to a communication link from the UE to the BS. As described in more detail herein, the BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), New Radio (NR) BS, 5G Node B, etc.

[0004] The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different user devices to communicate at the city, national, regional, and even global levels. NR (New Radio), which can also be referred to as 5G, is a set of improvements to the LTE mobile standard published by the 3GPP (Third Generation Partnership Project). NR is designed to better support mobile broadband internet access by using orthogonal frequency division multiplexing (CP-OFDM) with a cyclic prefix (CP) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation, thereby improving spectrum efficiency, lowering costs, enhancing services, utilizing new spectrum, and integrating better with other open standards. However, as the demand for mobile broadband access continues to increase, further improvements are needed in LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that utilize these technologies.

[0005] In some aspects, a wireless communication method performed by user equipment (UE) may include: receiving radio resource control (RRC) signaling from a base station that forms an uplink TCI state pool comprising a plurality of candidate uplink TCI (transmission configuration indication) states associated with an uplink resource; receiving downlink signaling from a base station that identifies an uplink TCI state to be used to transmit uplink communication through an uplink resource among the plurality of candidate uplink TCI states included in the uplink TCI state pool; and transmitting uplink communication through an uplink resource to a base station using an uplink transmission beam based at least partially on the uplink TCI state identified in the downlink signaling.

[0006] In some aspects, a wireless communication method performed by a base station may include: transmitting an RRC signaling to a UE that forms an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource; transmitting a downlink signaling to a UE that identifies an uplink TCI state among the plurality of candidate uplink TCI states included in the uplink TCI state pool to be used for transmitting uplink communication through an uplink resource; and receiving uplink communication through an uplink resource from the UE using an uplink receiving beam corresponding to an uplink transmitting beam associated with the uplink TCI state identified in the downlink signaling.

[0007] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and one or more processors may be configured to: receive an RRC signaling from a base station that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource; receive a downlink signaling from a base station that identifies, among the plurality of candidate uplink TCI states included in the uplink TCI state pool, an uplink TCI state to be used to transmit uplink communication through the uplink resource; and transmit uplink communication to the base station through the uplink resource using an uplink transmit beam based at least partially on the uplink TCI state identified in the downlink signaling.

[0008] In some aspects, a base station for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to transmit an RRC signaling to a UE that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource; transmit a downlink signaling to a UE that identifies, among the plurality of candidate uplink TCI states included in the uplink TCI state pool, an uplink TCI state to be used for transmitting uplink communication through the uplink resource; and receive uplink communication through the uplink resource from the UE using an uplink receiving beam corresponding to an uplink transmitting beam associated with the uplink TCI state identified in the downlink signaling.

[0009] In some aspects, a non-transient computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the processors to receive an RRC signaling from a base station that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource; receive a downlink signaling from a base station that identifies an uplink TCI state among the plurality of candidate uplink TCI states included in the uplink TCI state pool to be used for transmitting uplink communication through the uplink resource; and transmit uplink communication to the base station through the uplink resource using an uplink transmit beam based at least partially on the uplink TCI state identified in the downlink signaling.

[0010] In some aspects, a non-transient computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a base station, the one or more instructions may cause the processors to transmit to a UE an RRC signaling that constitutes an uplink TCI state pool containing a plurality of candidate uplink TCI states associated with an uplink resource; to transmit to a UE a downlink signaling that identifies, among the plurality of candidate uplink TCI states included in the uplink TCI state pool, an uplink TCI state to be used for transmitting uplink communication through the uplink resource; and to receive uplink communication from the UE using an uplink receiving beam corresponding to an uplink transmitting beam associated with the uplink TCI state identified in the downlink signaling.

[0011] In some aspects, a device for wireless communication may include: means for receiving an RRC signaling from a base station that forms an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource; means for receiving a downlink signaling from a base station that identifies an uplink TCI state to be used to transmit uplink communication through an uplink resource among a plurality of candidate uplink TCI states included in the uplink TCI state pool; and means for transmitting uplink communication to a base station through an uplink resource using an uplink transmission beam based at least partially on the uplink TCI state identified in the downlink signaling.

[0012] In some aspects, a device for wireless communication may include: means for transmitting to a UE an RRC signaling that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource; means for transmitting to a UE a downlink signaling that identifies, among the plurality of candidate uplink TCI states included in the uplink TCI state pool, an uplink TCI state to be used for transmitting uplink communication through an uplink resource; and means for receiving uplink communication through an uplink resource from the UE using an uplink receiving beam corresponding to an uplink transmitting beam associated with the uplink TCI state identified in the downlink signaling.

[0013] Aspects generally include methods, devices, systems, computer program products, non-transient computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems that are illustrated by the drawings and specifications and are substantially described herein with reference thereto.

[0014] The foregoing has been a more extensive summary of the features and technical advantages of the examples according to the present disclosure so that the following detailed description may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily utilized as a basis for modifying or designing other structures to perform the same purposes of the present disclosure. Such equivalent configurations do not depart from the scope of the appended claims. Both the features of the concepts disclosed herein, their structures, and methods of operation will be better understood from the following description when considered in conjunction with the accompanying drawings, together with their associated advantages. Each drawing is provided for the purpose of illustration and explanation, not as a definition of the limitations of the claims. Brief explanation of the drawing

[0015] In a manner that the features of the above disclosure can be understood in detail, a more specific description of the briefly summarized above may be made with reference to aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings merely illustrate specific ordinary aspects of the disclosure and should not be construed as limiting the scope of the disclosure, as the description may allow for other equally valid aspects. Identical reference numbers in different drawings may identify identical or similar elements.

[0016] FIG. 1 is a block diagram conceptually illustrating an example of a wireless communication network according to various aspects of the present disclosure.

[0017] FIG. 2 is a block diagram conceptually illustrating an example of a base station communicating with a UE in a wireless communication network according to various aspects of the present disclosure.

[0018] FIGS. 3a–3c are drawings illustrating one or more examples of uplink TCI (transmission configuration indication) status signaling according to various aspects of the present disclosure.

[0019] FIG. 4 is a drawing illustrating an exemplary process performed, for example by a UE, according to various aspects of the present disclosure.

[0020] FIG. 5 is a drawing illustrating an exemplary process performed, for example by a base station, according to various aspects of the present disclosure. Specific details for implementing the invention

[0021] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as being limited to any specific structure or function presented throughout the present disclosure. Rather, such aspects are provided so that the present disclosure may be thorough and complete and so that the scope of the present disclosure may be fully conveyed to those skilled in the art. Based on the teachings of this application, those skilled in the art should recognize that the scope of the present disclosure is intended to cover any aspect of the present disclosure as disclosed herein, whether it is embodied independently of any other aspect of the present disclosure or in combination with any other aspect. For example, an apparatus may be embodied or a method may be practiced using any number of aspects described herein. Furthermore, the scope of the present disclosure is intended to cover any apparatus or method practiced using structures, functions, or structures and functions other than those described herein. It should be understood that any aspect of the present disclosure as disclosed herein may be embodied by one or more elements of the claims.

[0022] Some aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and will be illustrated in the attached drawings by various blocks, modules, components, circuits, stages, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the design constraints imposed on the specific application and the overall system.

[0023] Although aspects may be described herein using terms commonly associated with 3G and / or 4G wireless technologies, it should be noted that the aspects of the present disclosure may be applicable to other generation-based communication systems, such as 5G and future generations, which include NR technologies.

[0024] FIG. 1 is a drawing illustrating a wireless network (100) in which aspects of the present disclosure may be implemented. The wireless network (100) may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network (100) may include a plurality of BSs (110) (illustrated as BS (110a), BS (110b), BS (110c), and BS (110d)) and other network entities. A BS is an entity that communicates with UEs (user equipment) and may also be referred to as a base station, NR BS, Node B, gNB, 5G node B (NB), access point, TRP (transmit receive point), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term “cell” may refer to the coverage area of ​​a BS and / or a BS subsystem serving such coverage area, depending on the context in which the term is used.

[0025] A BS can provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. Macro cells can cover a relatively large geographical area (e.g., a radius of several kilometers) and enable unrestricted access by UEs subscribed to the service. Pico cells can cover a relatively small geographical area and enable unrestricted access by UEs subscribed to the service. Femto cells can cover a relatively small geographical area (e.g., a home) and enable restricted access by UEs associated with the femto cell (e.g., UEs within a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In the example illustrated in FIG. 1, BS (110a) may be a macro BS for a macro cell (102a), BS (110b) may be a pico BS for a pico cell (102b), and BS (110c) may be a femto BS for a femto cell (102c). A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "node B," "5G NB," and "cell" may be used interchangeably herein.

[0026] In some aspects, the cell may not necessarily be fixed, and the geographical area of ​​the cell may move according to the location of the mobile BS. In some aspects, the BSs may be interconnected to one or more other BSs or network nodes (not shown) of the wireless network (100) and / or interconnected with each other through various types of backhaul interfaces, such as direct physical connections, virtual networks, etc., using any suitable transmission network.

[0027] The wireless network (100) may also include relay stations. A relay station is an entity capable of receiving transmissions of data from an upstream station (e.g., BS or UE) and transmitting transmissions of data to a downstream station (e.g., UE or BS). A relay station may also be a UE capable of relaying transmissions to other UEs. In the example illustrated in FIG. 1, the relay station (110d) may communicate with the macro BS (110a) and the UE (120d) to facilitate communication between the BS (110a) and the UE (120d). The relay station may also be referred to as a relay BS, a relay base station, a repeater, etc.

[0028] The wireless network (100) may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmission power levels, different coverage areas, and different effects on interference in the wireless network (100). For example, macro BSs may have high transmission power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmission power levels (e.g., 0.1 to 2 watts).

[0029] A network controller (130) can be coupled to a set of BSs and can provide coordination and control for these BSs. The network controller (130) can communicate with the BSs via a backhaul. The BSs can also communicate with each other indirectly or directly, for example, via a wireless or wired backhaul.

[0030] UEs (120) (e.g., 120a, 120b, 120c) may be scattered throughout the wireless network (100), and each UE may be fixed or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. The UE may be a cellular phone (e.g., smartphone), PDA (personal digital assistant), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, WLL (wireless local loop) station, tablet, camera, gaming device, netbook, smartbook, ultrabook, medical device or equipment, biometric sensors / devices, wearable devices (smart watches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart rings, smart bracelets)), entertainment device (e.g., music or video device, or satellite radio), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, global positioning system device, or any other suitable device configured to communicate via wireless or wired media.

[0031] Some UEs may be considered as machine-type communication (MTC) or eMTC (evolved or enhanced machine-type communication) UEs. MTC and eMTC UEs include robots, drones, remote devices, sensors, meters, monitors, location tags, etc., capable of communicating with, for example, a base station, other devices (e.g., remote devices), or some other entity. Wireless nodes may provide a connection to or from a network (e.g., a wide area network, such as the Internet or a cellular network) via, for example, a wired or wireless communication link. Some UEs may be considered as Internet-of-Things (IoT) devices and / or may be implemented as narrowband Internet of Things (NB-IoT) devices. Some UEs may be considered as Customer Premises Equipment (CPE). A UE (120) may be contained within a housing that houses components of the UE (120), such as processor components, memory components, etc.

[0032] Generally, any number of wireless networks may be deployed in a given geographical area. Each wireless network may support a specific radio access technology (RAT) and may operate on one or more frequencies. RAT may also be referred to as radio technology, air interface, etc. Frequency may also be referred to as carrier, 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, NR or 5G RAT networks may be deployed.

[0033] In some aspects, two or more UEs (120) (e.g., illustrated as UE (120a) and UE (120e)) may communicate directly using one or more sidelink channels (e.g., without using the base station (110) as an intermediary to communicate with each other). For example, the UEs (120) may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this case, the UE (120) may perform scheduling operations, resource selection operations, and / or other operations described elsewhere in the invention as performed by the base station (110).

[0034] As indicated above, FIG. 1 is provided as an example. Other examples may differ from those described in relation to FIG. 1.

[0035] FIG. 2 illustrates a block diagram of a design (200) of a base station (110) and a UE (120) that may be one of the base stations and one of the UEs in FIG. 1. 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), wherein, generally, T ≥ 1 and R ≥ 1.

[0036] At the base station (110), the transmitting processor (220) receives data for one or more UEs from a data source (212), selects one or more modulation and coding schemes (MCS) for each UE based at least partially on channel quality indicators (CQI) received from the UE, processes data for each UE (e.g., encoding and modulation) based at least partially on the selected MCS(s) for the UE, and can provide data symbols for all UEs. The transmitting processor (220) can also process system information (e.g., semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and can provide overhead symbols and control symbols. The transmitting processor (220) may also generate reference symbols for reference signals (e.g., CRS (cell-specific reference signal)) and synchronization signals (e.g., PSS (primary synchronization signal) and SSS (secondary synchronization signal)). The transmitting (TX) MIMO (multiple-input multiple-output) processor (230) may, where applicable, perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols and / or reference symbols, and may provide T output symbol streams to T modulators (MODs) (232a to 232t). Each modulator (232) may process individual output symbol streams (e.g., for OFDM, etc.) to obtain output sample streams.Each modulator (232) may further process the output sample stream (e.g., convert to analog, amplify, filter, and upconvert) to obtain a downlink signal. T downlink signals from the modulators (232a to 232t) may each be transmitted through T antennas (234a to 234t). According to various aspects described in more detail below, synchronization signals may be generated with location encoding to convey additional information.

[0037] In the UE (120), antennas (252a to 252r) may receive downlink signals from the base station (110) and / or other base stations and may provide the received signals to each demodulator (254a to 254r). Each demodulator (254) may condition the received signal (e.g., filtering, amplification, downconversion, and digitization) to obtain input samples. Each demodulator (254) may further process the input samples (e.g., for OFDM, etc.) to obtain the received symbols. A MIMO detector (256) may obtain the symbols received from all R demodulators (254a to 254r), perform MIMO detection on the received symbols where applicable, and provide the detected symbols. The receiving processor (258) can process the detected symbols (e.g., demodulate and decode), provide the decoded data for the UE (120) to the data sink (260), and provide the decoded control information and system information to the controller / processor (280). The channel processor can determine the RSRP (reference signal received power), RSSI (received signal strength indicator), RSRQ (reference signal received quality), CQI (channel quality indicator), etc. In some aspects, one or more components of the UE (120) may be included in the housing.

[0038] On the uplink, at the UE (120), a transmitting processor (264) may receive and process data from a data source (262) and control information (e.g., reports including RSRP, RSSI, RSRQ, CQI, etc.) from a controller / processor (280). The transmitting processor (264) may also generate reference symbols for one or more reference signals. Symbols from the transmitting processor (264) may, where applicable, be precoded by a TX MIMO processor (266), further processed by modulators (254a to 254r) (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to a base station (110). In the base station (110), in order to obtain decoded data and control information transmitted by the UE (120), uplink signals from the UE (120) and other UEs are received by antennas (234), processed by demodulators (232), detected by a MIMO detector (236) where applicable, and can be further processed by a receiving processor (238). The receiving processor (238) can provide the decoded data to a data sink (239) and the decoded control information to a controller / processor (240). The base station (110) includes a communication unit (244) and can communicate with a network controller (130) through the communication unit (244). The network controller (130) may include a communication unit (294), a controller / processor (290), and a memory (292).

[0039] The controller / processor (240) of the base station (110), the controller / processor (280) of the UE (120), and / or any other component(s) of FIG. 2 may perform one or more techniques associated with uplink TCI (transmission configuration indication) status signaling, as described in more detail elsewhere in this invention. For example, the controller / processor (240) of the base station (110), the controller / processor (280) of the UE (120), and / or any other component(s) of FIG. 2 may perform, for example, the process (400) of FIG. 4, the process (500) of FIG. 5, and / or other processes as described herein, or direct their operations. The memories (242 and 282) may each store data and program codes for the base station (110) and the UE (120). In some aspects, the memory (242) and / or memory (282) may comprise a non-transient computer-readable medium that stores one or more instructions for wireless communication. For example, the one or more instructions may perform or direct the operations of, for example, the process (400) of FIG. 4, the process (500) of FIG. 5, and / or other processes as described herein, when executed by one or more processors of the base station (110) and / or the UE (120). The scheduler (246) may schedule UEs for data transmission over the downlink and / or uplink.

[0040] In some aspects, the means may include: receiving radio resource control (RRC) signaling from a UE (120) and a base station (110) that forms an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource; receiving downlink signaling from the base station (110) that identifies an uplink TCI state to be used to transmit uplink communication through an uplink resource among a plurality of candidate uplink TCI states included in the uplink TCI state pool; and transmitting uplink communication through an uplink resource to the base station (110) using an uplink transmission beam based at least partially on the uplink TCI state identified in the downlink signaling. In some aspects, such means may include one or more components of the UE (120) described in relation to FIG. 2, such as a controller / processor (280), a transmitting processor (264), a TX MIMO processor (266), a MOD (254), an antenna (252), a DEMOD (254), a MIMO detector (256), a receiving processor (258), etc.

[0041] In some aspects, the base station (110) may include means for transmitting to the UE (120) an RRC signaling that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource, means for transmitting to the UE (120) a downlink signaling that identifies an uplink TCI state to be used to transmit uplink communication through the uplink resource among the plurality of candidate uplink TCI states included in the uplink TCI state pool, and means for receiving uplink communication through the uplink resource from the UE (120) using an uplink receiving beam corresponding to an uplink transmitting beam associated with the uplink TCI state identified in the downlink signaling. In some aspects, such means may include one or more components of the base station (110) described in relation to FIG. 2, such as an antenna (234), a DEMOD (232), a MIMO detector (236), a receiving processor (238), a controller / processor (240), a transmitting processor (220), a TX MIMO processor (230), a MOD (232), an antenna (234), etc.

[0042] As indicated above, FIG. 2 is provided as an example. Other examples may differ from those described in relation to FIG. 2.

[0043] Wireless communication devices, such as UEs, base stations, and transmit-receive points (TRPs), can communicate with each other using beams. For example, in some cases, the downlink transmission configuration indicator (TCI) status can define beams according to the downlink transmit beam to be used by the base station, TRP, etc., and the corresponding downlink receive beam to be used by the UE. Generally, the downlink TCI status can indicate the source reference signal and quasi-colocation (QCL) type to be used for the corresponding beam. For example, the QCL type may correspond to one or more QCL relationships indicating how the source reference signal is quasi-colocated (QCLed) with the channel on the beam. Two antenna ports are said to be QCLed if the characteristics of the channel through which a symbol on one antenna port (e.g., the channel on the beam) is transmitted can be inferred from the channel through which a symbol on another antenna port is transmitted (e.g., the source reference signal). Examples of QCL relationships that can be bundled into QCL types include Doppler shift, Doppler spread, mean delay, delay spread, spatial reception parameters, etc. Therefore, beam characteristics can generally be derived from the characteristics of the source reference signal.

[0044] Furthermore, on the uplink, the beam is typically defined according to uplink spatial relation information (SRI) indicating the spatial domain transmit filter to be used by the UE for the corresponding uplink communication. Thus, in this case, the uplink SRI may indicate the uplink transmit beam to be used by the UE, and the corresponding uplink receive beam to be used by the base station, TRP, etc. Additionally, or alternatively, uplink TCI states may be defined for beamformed uplink communications. In such cases, each effective uplink TCI state configuration may include a source reference signal to indicate the uplink transmit beam for the target uplink communication (e.g., target uplink reference signal or target uplink channel). For example, the source reference signal may be an SRS (sounding reference signal), SSB (synchronization signal block), CSI-RS (channel state information reference signal), etc., and the target uplink communication may be a PRACH (physical random access channel), PUCCH (physical uplink control channel), PUSCH (physical uplink shared channel), SRS, DMRS (demodulation reference signal) (e.g., DMRS for PUCCH or PUSCH), etc. In this way, supporting uplink TCI states can enable an integrated TCI framework for downlink and uplink communications, and can enable the base station to display various uplink QCL relationships regarding uplink TCI states (e.g., Doppler shift, Doppler spread, mean delay, delay spread, etc.).However, signaling techniques to inform the UE of which uplink TCI state will be activated for a specific uplink communication are not clearly defined, which may prevent the base station and the UE from implementing an integrated TCI framework for downlink and uplink communications.

[0045] Some aspects described herein relate to techniques and apparatus that enable a base station to signal to a UE information regarding uplink TCI states to be used for uplink communications between a UE and a base station. For example, in some aspects, the base station may transmit to the UE one or more radio resource control (RRC) messages containing information for configuring an uplink TCI state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource or a set of uplink resources. For example, the uplink TCI state pool may include candidate uplink TCI states that can be used for an uplink reference signal (e.g., SRS or a set of SRS), an uplink channel (e.g., PRACH, PUCCH, PUSCH, etc.), an uplink reference signal for an uplink channel (e.g., DMRS for PUCCH or PUSCH), etc. Furthermore, the base station may transmit downlink signaling to the UE that identifies an uplink TCI state to be used for transmitting uplink communication via uplink resources from among a number of candidate uplink TCI states included in an uplink TCI state pool. For example, in some aspects, the downlink signaling may include a MAC-CE (medium access control element) for selecting a specific uplink TCI state from among candidate uplink TCI states included in an uplink TCI state pool configured by RRC messages. Additionally or alternatively, the downlink signaling may include a MAC-CE for selecting a subset of candidate uplink TCI states included in an RRC-configured uplink TCI state pool, and the downlink signaling may further include DCI (downlink control information) to indicate a specific uplink TCI state to be used for dynamically scheduled or semi-permanently scheduled uplink communication from among the subset of candidate uplink TCI states selected by the MAC-CE.In this way, the base station and the UE can communicate on the uplink using the uplink TCI state as part of an integrated TCI framework for downlink and uplink communications.

[0046] FIGS. 3a–3c are drawings illustrating one or more examples (300) of uplink TCI status signaling according to various aspects of the present disclosure. As illustrated in FIG. 3, the example(s) (300) include a UE (120) communicating with a base station (110) over a wireless network (e.g., wireless network (100)). In some aspects, as described herein, the UE (120) and the base station (110) may communicate over the uplink using beamformed communications. For example, the UE (120) may use an uplink transmit beam when transmitting uplink communications, and the base station (110) may use an uplink receive beam corresponding to the uplink transmit beam to receive uplink communications. Generally, the base station (110) may perform uplink beam management to configure, enable, disable, or otherwise update the uplink transmit beam and the corresponding uplink receive beam based at least partially on the uplink TCI states. For example, the UE (120) can support beamformed uplink communication using uplink TCI states, and downlink signaling from the base station (110) to the UE (120) can be used to indicate specific uplink TCI states associated with an uplink transmit beam and a corresponding uplink receive beam that are activated and used for uplink communication between the UE (120) and the base station (110).

[0047] As illustrated in FIG. 3a and reference number (310), a base station (110) may transmit RRC signaling that constitutes an uplink TCI state pool, and a UE (120) may receive it. For example, in some aspects, the RRC signaling may include one or more RRC messages, each of which may constitute an uplink TCI state pool for a specific uplink resource or set of resources. For example, the uplink resources associated with the configured uplink TCI state pool may generally include one or more time and frequency resources (e.g., resource blocks) that the UE (120) can use to transmit uplink communication (e.g., uplink reference signals, such as SRS, etc., or uplink channels, such as PRACH, PUCCH, PUSCH, etc.). Additionally or alternatively, the set of uplink resources associated with the configured uplink TCI state pool may include a set of time and frequency resources (e.g., a set of resource blocks) that the UE (120) can use to transmit uplink communication. In some aspects, the uplink TCI state pool for a specific uplink resource or set of uplink resources may include information related to a number of candidate uplink TCI states that can be used for the corresponding uplink resource or set of uplink resources. For example, in some aspects, each candidate uplink TCI state included in the uplink TCI state pool configuration may include a source reference signal for indicating an uplink transmit beam for target uplink communication. For example, the source reference signal may include an uplink reference signal (e.g., SRS) or a downlink reference signal (e.g., SSB or CSI-RS), and the target uplink communication may include an uplink reference signal (e.g., SRS), an uplink channel (e.g., PRACH, PUCCH, or PUSCH), an uplink reference signal for the uplink channel (e.g., DMRS for PUCCH or PUSCH), etc.In addition, in some aspects, an uplink TCI state pool for a specific uplink resource or set of uplink resources may be associated with an uplink TCI state identifier space specific to a specific bandwidth portion, a specific component carrier, and / or a UE (120). An example of RRC signaling for configuring uplink TCI state pools for specific bandwidth portions, component carriers, etc. is described in more detail below with reference to FIG. 3b.

[0048] As further illustrated in FIG. 3a and by reference number (312), the base station (110) may transmit downlink signaling that identifies an uplink TCI state to be activated among candidate uplink TCI states in an RRC-configured uplink TCI state pool, and the UE (120) may receive this. For example, in some aspects, the downlink signaling may include a MAC-CE that selects an uplink TCI state from among a number of candidate uplink TCI states in an uplink TCI state pool associated with a specific uplink resource or set of resources (e.g., SRS, PRACH, PUCCH, PUSCH, and / or other appropriate uplink reference signal or uplink channel). An example of using a MAC-CE to identify an uplink TCI state to be activated is described in more detail below with reference to FIG. 3b.

[0049] Additionally or alternatively, in some aspects, downlink signaling may include a MAC-CE that selects a subset of candidate uplink TCI states from an RRC-configured uplink TCI state pool associated with a specific uplink resource or set of resources and a subsequent DCI to indicate a specific uplink TCI state to be activated for a dynamically scheduled or semi-permanently scheduled uplink communication (e.g., SRS, PRACH, PUCCH, PUSCH, etc.). For example, in some cases, RRC signaling may configure an uplink TCI state pool containing up to 128 candidate uplink TCI states for a specific uplink resource or set of uplink resources, and the MAC-CE may include information for selecting up to 8 of the candidate uplink TCI states from the RRC-configured uplink TCI state pool. Accordingly, in this example, the DCI may include three bits to indicate one of the candidate uplink TCI states selected by the MAC-CE to be used by the UE (120) to transmit dynamically scheduled or semi-permanently scheduled uplink communication. In this case, the DCI may include a downlink and / or uplink TCI state indication, where the indicated TCI state is one of the TCI states selected by the MAC-CE from an RRC-configured pool of candidate TCI states. Furthermore, in some aspects, the TCI state indicated by the DCI may be applied to an uplink reference signal (e.g., SRS), an uplink channel (e.g., PRACH, PUCCH, or PUSCH), a downlink reference signal (e.g., CSI-RS), a downlink channel (e.g., PDCCH (physical downlink control channel) or PDSCH (physical downlink shared channel)), etc.An example of using DCI to indicate the uplink TCI state to be activated for dynamically scheduled or semi-permanently scheduled uplink communication from a subset of TCI states selected by MAC-CE is described in more detail below with reference to Fig. 3c.

[0050] As further illustrated in FIG. 3a and by reference number (314), the UE (120) may transmit uplink communication based at least partially on an uplink TCI state activated through downlink signaling (e.g., by MAC-CE activating uplink TCI states from an RRC-configured pool or by DCI activating an uplink TCI state from a subset of uplink TCI states from an RRC-configured pool by MAC-CE), and the base station (110) may receive it. For example, in some aspects, the UE (120) may transmit uplink communication using an uplink transmit beam associated with the activated uplink TCI state, and the base station (110) may receive uplink communication using an uplink receive beam corresponding to the uplink transmit beam. Furthermore, as described above, the uplink communication may include an uplink reference signal, an uplink channel, an uplink reference signal for the uplink channel, etc. For example, in some aspects, uplink communication may include SRS, PRACH, PUCCH, PUSCH, DMRS for PUCCH, DMRS for PUSCH, etc.

[0051] As illustrated in FIG. 3b, in some aspects, the base station (110) may provide RRC signaling to the UE (120) to form uplink TCI state pools for different bandwidth portions, component carriers, etc., and may further provide MAC-CE to identify an uplink TCI state to be activated for a specific uplink communication. For example, as illustrated by reference number (320), the RRC signaling may include a first RRC message forming a first uplink TCI state pool containing a plurality of candidate uplink TCI states for a first component carrier (cell 1) of a first bandwidth portion (BWP1), a second RRC message forming a second uplink TCI state pool containing a plurality of candidate uplink TCI states for a first component carrier of a second bandwidth portion (BWP2), a third RRC message forming a third uplink TCI state pool containing a plurality of candidate uplink TCI states for a second component carrier of a first bandwidth portion, etc. Furthermore, as described above, the uplink TCI state pool(s) configured by the RRC message(s) may be for a specific uplink resource or set of uplink resources (e.g., a resource or set of resources associated with SRS, PRACH, PUCCH, PUSCH, etc.).

[0052] In some aspects, as further illustrated by reference number (322), the MAC-CE may select an uplink TCI state to be activated for a specific uplink communication from candidate uplink TCI states of RRC-configured uplink TCI state pools. For example, as illustrated by reference number (324), the MAC-CE may have a structure including a first field for a serving cell ID (e.g., component carrier), a second field for a bandwidth portion ID, one or more reserved fields, etc. Thus, as further illustrated in FIG. 3b, the MAC-CE may include an identifier associated with a specific uplink resource or set of uplink resources (e.g., a resource or set of resources associated with SRS, PRACH, PUCCH, PUSCH, etc.) and an identifier associated with an uplink TCI state to be activated for the specific uplink resource or set of uplink resources. In some aspects, as described above, the uplink TCI state to be activated may be one of the candidate uplink TCI states in one of the RRC-configured uplink TCI state pools corresponding to the serving cell ID and bandwidth portion ID indicated in the MAC-CE. Thus, as further illustrated by reference number (326), the UE (120) may transmit uplink communication using the uplink TCI state selected by the MAC-CE, and the base station (110) may receive it. For example, in some aspects, the UE (120) may transmit an uplink reference signal or uplink channel corresponding to the uplink resource (set) identifier included in the MAC-CE using an uplink transmit beam associated with the uplink TCI state identifier additionally included in the MAC-CE.

[0053] As illustrated in FIG. 3c, in some embodiments, the base station (110) may provide RRC signaling to the UE (120) to configure one or more uplink TCI state pools (e.g., for one or more uplink resources or resource sets, bandwidth portions, component carriers, etc.), and downlink signaling including MAC-CE and DCI may be used to identify uplink TCI states to be activated for a specific uplink communication. For example, as illustrated by reference number (330), the RRC signaling may include an uplink TCI state pool configuration indicating a plurality of candidate uplink TCI states for a specific uplink resource, resource set, component carrier, bandwidth portion, etc. For example, in some embodiments, the uplink TCI state pool configuration may include up to 128 candidate uplink TCI states. In some embodiments, as further illustrated by reference number (332), the MAC-CE may select a subset (e.g., up to 8) of candidate uplink TCI states from the uplink TCI state pool configuration. For example, as illustrated by reference number (334), the MAC-CE may have a structure including a first field for a serving cell ID (e.g., component carrier), a second field for a bandwidth portion ID, one or more reserved fields, etc. In some aspects, the one or more reserved fields may include a bit having a first value (e.g., 0 or 1) to indicate that the MAC-CE selects a subset of downlink TCI states, or a second value (e.g., 1 or 0) to indicate that the MAC-CE selects a subset of uplink TCI states.

[0054] Furthermore, as illustrated in FIG. 3c, the MAC-CE may include various fields to indicate candidate uplink TCI states selected by the MAC-CE in cases where the MAC-CE is used to select a subset of uplink TCI states from an RRC-configured uplink TCI state pool. For example, in FIG. 3c, the MAC-CE may include a bitmap, where equation Ti = 0, ..., (N-2)×8+7 corresponds to identifiers associated with candidate uplink TCI states configured by RRC signaling, and each bit has a value of 1 to indicate that the candidate uplink TCI state is selected by the MAC-CE or a value of 0 to indicate that the candidate uplink TCI state is not selected by the MAC-CE. For example, in FIG. 3c, the candidate uplink TCI states associated with identifiers T7 and T0 are selected by the MAC-CE. Accordingly, as further illustrated by reference number (336), the base station (110) may transmit a DCI containing a sequence of bits (e.g., code points or other coded bits) indicating an uplink TCI state to be activated for a specific uplink communication, and the UE (120) may receive it. For example, in cases where the MAC-CE selects a subset of uplink TCI states containing eight or fewer RRC-configured candidate uplink TCI states, the DCI may contain three bits to indicate one of the uplink TCI states within the selected subset to be activated for uplink communication. Accordingly, as further illustrated by reference number (338), the UE (120) may transmit an uplink communication using the uplink TCI state indicated in the DCI, and the base station (110) may receive it.For example, in some aspects, the UE (120) may transmit a dynamically scheduled, non-periodic, or semi-permanently scheduled uplink reference signal or uplink channel using an uplink transmit beam associated with an uplink TCI state activated through the DCI (e.g., according to a dynamic grant, a configured grant, etc.).

[0055] As indicated above, FIGS. 3a–3c are provided as one or more examples. Other examples may differ from those described in relation to FIGS. 3a–3c.

[0056] FIG. 4 is a diagram illustrating an exemplary process (400) performed, for example, by a UE, according to various aspects of the present disclosure. The exemplary process (400) is an example in which a UE (e.g., UE (120) etc.) performs operations associated with uplink TCI status signaling.

[0057] As illustrated in FIG. 4, in some aspects, the process (400) may include receiving RRC signaling from a base station to form an uplink TCI state pool containing a plurality of candidate uplink TCI states associated with an uplink resource (block (410)). For example, as described above, the UE may receive RRC signaling from a base station to form an uplink TCI state pool containing a plurality of candidate uplink TCI states associated with an uplink resource (e.g., using an antenna (252), a DEMOD (254), a MIMO detector (256), a receiving processor (258), a controller / processor (280), a memory (282), etc.).

[0058] As additionally illustrated in FIG. 4, in some aspects, the process (400) may include receiving downlink signaling (block (420)) from a base station identifying an uplink TCI state to be used to transmit uplink communication through an uplink resource among a plurality of candidate uplink TCI states included in an uplink TCI state pool. For example, as described above, the UE may receive downlink signaling from a base station (e.g., using an antenna (252), a DEMOD (254), a MIMO detector (256), a receiving processor (258), a controller / processor (280), a memory (282), etc.) identifying an uplink TCI state to be used to transmit uplink communication through an uplink resource among a plurality of candidate uplink TCI states included in an uplink TCI state pool.

[0059] As additionally illustrated in FIG. 4, in some aspects, the process (400) may include transmitting uplink communication to a base station through an uplink resource using an uplink transmit beam based at least partially on an uplink TCI state identified in downlink signaling (block (430)). For example, as described above, the UE may transmit uplink communication to a base station through an uplink resource using an uplink transmit beam based at least partially on an uplink TCI state identified in downlink signaling (e.g., using a controller / processor (280), a transmit processor (264), a TX MIMO processor (266), a MOD (254), an antenna (252), etc.).

[0060] The process (400) may include additional aspects, such as any single aspect or any combination of aspects related to one or more other processes described below and / or described elsewhere in the present invention.

[0061] In the first aspect, downlink signaling includes a MAC-CE that identifies an uplink TCI state to be used to transmit uplink communication through an uplink resource.

[0062] In a second aspect, alone or in combination with a first aspect, downlink signaling includes a MAC-CE that selects a subset of multiple candidate uplink TCI states from an uplink TCI state pool.

[0063] In a third aspect, alone or in combination with one or more of the first and second aspects, the downlink signaling further includes a DCI indicating an uplink TCI state to be used to transmit uplink communication through an uplink resource, among a subset of a plurality of candidate uplink TCI states selected by the MAC-CE.

[0064] In the fourth aspect, alone or in combination with one or more of the first to third aspects, DCI additionally indicates that the uplink TCI status will apply to one or more of PDCCH, PDSCH, or CSI-RS.

[0065] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, the DCI includes a bit sequence for indicating an uplink TCI status to be used for transmitting uplink communication.

[0066] In the sixth aspect, alone or in combination with one or more of the first to fifth aspects, the MAC-CE includes one or more bits for indicating that the MAC-CE selects a subset of a plurality of candidate uplink TCI states to be used for transmitting uplink communication.

[0067] In the seventh aspect, alone or in combination with one or more of the first through sixth aspects, the uplink TCI state pool is associated with one or more of a bandwidth portion, a component carrier, or a UE.

[0068] In the eighth aspect, alone or in combination with one or more of the first through seventh aspects, the uplink resource comprises a set of uplink resources associated with one or more of PRACH, PUCCH, PUSCH, or SRS.

[0069] In the ninth aspect, alone or in combination with one or more of the first through eighth aspects, the uplink resource comprises one or more of the PRACH resource, PUCCH resource, PUSCH resource, or SRS resource.

[0070] Although FIG. 4 illustrates exemplary blocks of process (400), in some aspects, process (400) may include additional blocks other than those depicted in FIG. 4, fewer blocks than those depicted, blocks different from those depicted, or blocks arranged differently from those depicted. Additionally, or alternatively, two or more of the blocks of process (400) may be performed in parallel.

[0071] FIG. 5 is a drawing illustrating an exemplary process (500) performed, for example, by a base station, according to various aspects of the present disclosure. The exemplary process (500) is an example in which a base station (e.g., base station (110), etc.) performs operations associated with uplink TCI status signaling.

[0072] As illustrated in FIG. 5, in some aspects, the process (500) may include transmitting RRC signaling to the UE (block (510)) that constitutes an uplink TCI state pool containing a plurality of candidate uplink TCI states associated with an uplink resource. For example, as described above, the base station may transmit RRC signaling to the UE that constitutes an uplink TCI state pool containing a plurality of candidate uplink TCI states associated with an uplink resource (e.g., using a controller / processor (240), a transmit processor (220), a TX MIMO processor (230), a MOD (232), an antenna (234), etc.).

[0073] As additionally illustrated in FIG. 5, in some aspects, the process (500) may include transmitting downlink signaling to the UE (block (520)) identifying an uplink TCI state to be used for transmitting uplink communication through an uplink resource among a plurality of candidate uplink TCI states included in an uplink TCI state pool. For example, as described above, the base station may transmit downlink signaling to the UE identifying an uplink TCI state to be used for transmitting uplink communication through an uplink resource among a plurality of candidate uplink TCI states included in an uplink TCI state pool (e.g., using a controller / processor (240), a transmit processor (220), a TX MIMO processor (230), a MOD (232), an antenna (234), etc.).

[0074] As additionally illustrated in FIG. 5, in some aspects, the process (500) may include receiving uplink communication through an uplink resource from a UE using an uplink receiving beam corresponding to an uplink transmitting beam associated with an uplink TCI state identified in downlink signaling (block (530)). For example, as described above, a base station may receive uplink communication through an uplink resource from a UE using an uplink receiving beam corresponding to an uplink transmitting beam associated with an uplink TCI state identified in downlink signaling (e.g., using an antenna (234), DEMOD (232), MIMO detector (236), receiving processor (238), controller / processor (240), etc.).

[0075] The process (500) may include additional aspects, such as any single aspect or any combination of aspects related to one or more other processes described below and / or described elsewhere in the present invention.

[0076] In the first aspect, downlink signaling includes a MAC-CE that identifies an uplink TCI state to be used to transmit uplink communication through an uplink resource.

[0077] In a second aspect, alone or in combination with a first aspect, downlink signaling includes a MAC-CE that selects a subset of multiple candidate uplink TCI states from an uplink TCI state pool.

[0078] In a third aspect, alone or in combination with one or more of the first and second aspects, the downlink signaling further includes a DCI indicating an uplink TCI state to be used to transmit uplink communication through an uplink resource, among a subset of a plurality of candidate uplink TCI states selected by the MAC-CE.

[0079] In the fourth aspect, alone or in combination with one or more of the first to third aspects, DCI additionally indicates that the uplink TCI status will apply to one or more of PDCCH, PDSCH, or CSI-RS.

[0080] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, the DCI includes a bit sequence for indicating an uplink TCI status to be used for transmitting uplink communication.

[0081] In the sixth aspect, alone or in combination with one or more of the first to fifth aspects, the MAC-CE includes one or more bits for indicating that the MAC-CE selects a subset of a plurality of candidate uplink TCI states to be used for transmitting uplink communication.

[0082] In the seventh aspect, alone or in combination with one or more of the first through sixth aspects, the uplink TCI state pool is associated with one or more of a bandwidth portion, a component carrier, or a UE.

[0083] In the eighth aspect, alone or in combination with one or more of the first through seventh aspects, the uplink resource comprises a set of uplink resources associated with one or more of PRACH, PUCCH, PUSCH, or SRS.

[0084] In the ninth aspect, alone or in combination with one or more of the first through eighth aspects, the uplink resource comprises one or more of the PRACH resource, PUCCH resource, PUSCH resource, or SRS resource.

[0085] Although FIG. 5 illustrates exemplary blocks of process (500), in some aspects, process (500) may include additional blocks other than those depicted in FIG. 5, fewer blocks than those depicted, blocks different from those depicted, or blocks arranged differently from those depicted. Additionally, or alternatively, two or more of the blocks of process (500) may be performed in parallel.

[0086] The foregoing disclosures are for illustrative purposes only and are not intended to limit the aspects to the exact form disclosed or to encompass all aspects. Modifications and variations may be made in light of the foregoing disclosures or may be captured from the practice of the aspects.

[0087] As used herein, the term “component” is intended to be interpreted broadly as hardware, firmware, and / or combinations of hardware and software. As used herein, a processor is implemented as hardware, firmware, and / or combinations of hardware and software.

[0088] As used herein, satisfying a threshold may, depending on the context, represent a value such as exceeding the threshold, being greater than or equal to the threshold, being less than or equal to the threshold, being equal to the threshold, or not equal to the threshold.

[0089] It will be apparent that the systems and / or methods described herein may be implemented in different forms of hardware, firmware, and / or combinations of hardware and software. The specific control hardware or software code used to implement these systems and / or methods is not limited to these aspects. Accordingly, the operation and behavior of the systems and / or methods have been described herein without reference to specific software code—it should be understood that software and hardware may be designed to implement the systems and / or methods based at least partially on the description herein.

[0090] Specific combinations of features are mentioned in the claims and / or disclosed in the specification, but these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features may be combined in ways that are not specifically described in the claims and / or disclosed in the specification. Each dependent claim listed below may depend directly on only one claim, but the disclosure of various aspects includes each dependent claim in combination with every other claim in the set of claims. A phrase referring to "at least one of" a list of items refers to any combination of such items, including single members. For example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with sets of the same elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other order of a, b, and c).

[0091] Elements, acts, or commands used herein shall not be interpreted as important or essential unless explicitly stated otherwise. Additionally, as used herein, singular expressions are intended to include one or more items and may be used interchangeably with "one or more." Furthermore, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.) and may be used interchangeably with "one or more." If only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, terms such as "have," "have," and "having" are intended to be open-ended terms. Additionally, the phrase "based on" is intended to mean "at least partially based on" unless explicitly stated otherwise.

Claims

Claim 1 A wireless communication method performed by a user equipment (UE), comprising: receiving a radio resource control signaling from a base station that forms an uplink TCI state pool including a plurality of candidate uplink TCI (transmission configuration indication) states associated with an uplink resource; and receiving a downlink signaling from the base station that identifies an uplink TCI state to be used for transmitting uplink communication on the uplink resource among the plurality of candidate uplink TCI states included in the uplink TCI state pool. and includes the step of transmitting the uplink communication to the base station using an uplink transmission beam based at least partially on the uplink TCI state identified in the downlink signaling, wherein the downlink signaling includes a medium access control (MAC) control element (MAC-CE) for selecting a subset of uplink TCI states from a plurality of candidate uplink TCI states in the uplink TCI state pool; the downlink signaling further includes downlink control information (DCI) indicating the uplink TCI state to be used for transmitting the uplink communication on the uplink resource among the subset of uplink TCI states selected by the MAC-CE; and the DCI includes a bit sequence for indicating the uplink TCI state to be used for transmitting the uplink communication;A wireless communication method performed by a user device (UE), wherein the MAC CE has a structure comprising: a first field for a serving cell ID, a second field for a bandwidth portion ID, and one or more third fields, and the one or more third fields of the MAC CE indicate that the MAC CE will select a subset of the uplink TCI states. Claim 2 A wireless communication method performed by a user device (UE), wherein the downlink signaling comprises a MAC-CE that identifies the uplink TCI state to be used to transmit the uplink communication on the uplink resource. Claim 3 delete Claim 4 delete Claim 5 A wireless communication method performed by a user device (UE), wherein, in claim 1, the DCI further indicates that the uplink TCI state is applied to one or more of a physical downlink control channel, a physical downlink shared channel, or a channel state information reference signal. Claim 6 delete Claim 7 delete Claim 8 In claim 1, the uplink TCI state pool is a wireless communication method performed by a user device (UE) associated with one or more of the bandwidth portion, component carrier, or UE. Claim 9 A wireless communication method performed by a user device (UE) according to claim 1, wherein the uplink resource comprises a set of uplink resources associated with one or more of a physical random access channel, a physical uplink control channel, a physical uplink shared channel, or a sounding reference signal. Claim 10 A wireless communication method performed by a user device (UE) according to claim 1, wherein the uplink resource comprises one or more of a physical random access channel resource, a physical uplink control channel resource, a physical uplink shared channel resource, or a sounding reference signal resource. Claim 11 A wireless communication method performed by a base station, comprising: transmitting a wireless resource control signaling to a user equipment (UE) that forms an uplink TCI state pool including a plurality of candidate uplink TCI (transmission configuration indication) states associated with an uplink resource; and transmitting a downlink signaling to the UE that identifies an uplink TCI state to be used for transmitting uplink communication on the uplink resource among the plurality of candidate uplink TCI states included in the uplink TCI state pool. and includes the step of receiving the uplink communication from the UE on the uplink resource using an uplink receiving beam corresponding to an uplink transmitting beam associated with the uplink TCI state identified in the downlink signaling, wherein the downlink signaling includes a Media Access Control (MAC) control element (MAC-CE) for selecting a subset of uplink TCI states from a plurality of candidate uplink TCI states in the uplink TCI state pool; the downlink signaling further includes downlink control information (DCI) indicating the uplink TCI state to be used for transmitting the uplink communication on the uplink resource among the subset of uplink TCI states selected by the MAC-CE; and the DCI includes a bit sequence for indicating the uplink TCI state to be used for transmitting the uplink communication; A wireless communication method performed by a base station, wherein the MAC CE has a structure comprising: a first field for a serving cell ID, a second field for a bandwidth portion ID, and one or more third fields, and the one or more third fields of the MAC CE indicate that the MAC CE will select a subset of the uplink TCI states. Claim 12 A wireless communication method performed by a base station, wherein the downlink signaling includes a MAC-CE that identifies the uplink TCI state to be used to transmit the uplink communication on the uplink resource. Claim 13 delete Claim 14 delete Claim 15 A wireless communication method performed by a base station, wherein, in claim 11, the DCI further indicates that the uplink TCI state will be applied to one or more of a physical downlink control channel, a physical downlink shared channel, or a channel state information reference signal. Claim 16 delete Claim 17 delete Claim 18 In claim 11, the uplink TCI state pool is associated with one or more of the bandwidth portion, component carrier, or UE, a wireless communication method performed by a base station. Claim 19 A wireless communication method performed by a base station, wherein the uplink resource comprises a set of uplink resources associated with one or more of a physical random access channel, a physical uplink control channel, a physical uplink sharing channel, or a sounding reference signal. Claim 20 A wireless communication method performed by a base station, wherein, in claim 11, the uplink resource comprises one or more of a physical random access channel resource, a physical uplink control channel resource, a physical uplink shared channel resource, or a sounding reference signal resource. Claim 21 A user equipment (UE) for wireless communication comprises: a memory; and one or more processors operably coupled to the memory, wherein the memory and the one or more processors: receive from a base station a wireless resource control signaling that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI (transmission configuration indication) states associated with an uplink resource; and receive from the base station a downlink signaling that identifies, among the plurality of candidate uplink TCI states included in the uplink TCI state pool, an uplink TCI state to be used for transmitting uplink communication on the uplink resource; And is configured to transmit the uplink communication to the base station using an uplink transmit beam based at least partially on the uplink TCI state identified in the downlink signaling, wherein the downlink signaling comprises a Media Access Control (MAC) control element (MAC-CE) for selecting a subset of uplink TCI states from a plurality of candidate uplink TCI states in the uplink TCI state pool; the downlink signaling further comprises downlink control information (DCI) indicating the uplink TCI state to be used for transmitting the uplink communication on the uplink resource among the subset of uplink TCI states selected by the MAC-CE; and the DCI comprises a bit sequence for indicating the uplink TCI state to be used for transmitting the uplink communication; A user device (UE) for wireless communication, wherein the MAC CE has a structure comprising: a first field for a serving cell ID, a second field for a bandwidth portion ID, and one or more third fields, and the one or more third fields of the MAC CE indicate that the MAC CE will select a subset of the uplink TCI states. Claim 22 A base station for wireless communication comprises: a memory; and one or more processors operably coupled to the memory, wherein the memory and the one or more processors: transmit wireless resource control signaling to a user equipment (UE) that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI (transmission configuration indication) states associated with an uplink resource; and transmit downlink signaling to the UE that identifies an uplink TCI state to be used for transmitting uplink communication on the uplink resource among the plurality of candidate uplink TCI states included in the uplink TCI state pool. And is configured to receive the uplink communication from the UE on the uplink resource using an uplink receiving beam corresponding to an uplink transmitting beam associated with the uplink TCI state identified in the downlink signaling, and the downlink signaling includes a Media Access Control (MAC) control element (MAC-CE) that selects a subset of uplink TCI states from a plurality of candidate uplink TCI states in the uplink TCI state pool; the downlink signaling further includes downlink control information (DCI) indicating the uplink TCI state to be used to transmit the uplink communication on the uplink resource among the subset of uplink TCI states selected by the MAC-CE; and the DCI includes a bit sequence for indicating the uplink TCI state to be used to transmit the uplink communication; A base station for wireless communication, wherein the MAC CE has a structure comprising: a first field for a serving cell ID, a second field for a bandwidth portion ID, and one or more third fields, and the one or more third fields of the MAC CE indicate that the MAC CE will select a subset of the uplink TCI states. Claim 23 A non-transient computer-readable storage medium for storing one or more instructions for wireless communication, wherein the one or more instructions: when executed by one or more processors of a user device (UE), the one or more processors cause the processors to: receive from a base station a wireless resource control signaling that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI (transmission configuration indication) states associated with an uplink resource; and receive from the base station a downlink signaling that identifies, among the plurality of candidate uplink TCI states included in the uplink TCI state pool, an uplink TCI state to be used for transmitting uplink communication on the uplink resource; And includes one or more commands for transmitting the uplink communication to the base station using an uplink transmit beam based at least partially on the uplink TCI state identified in the downlink signaling, and the downlink signaling includes a Media Access Control (MAC) control element (MAC-CE) for selecting a subset of uplink TCI states from the plurality of candidate uplink TCI states in the uplink TCI state pool; the downlink signaling further includes downlink control information (DCI) indicating the uplink TCI state to be used to transmit the uplink communication on the uplink resource from the subset of uplink TCI states selected by the MAC-CE; the DCI includes a bit sequence for indicating the uplink TCI state to be used to transmit the uplink communication;And the above MAC CE has a structure comprising: a first field for a serving cell ID, a second field for a bandwidth portion ID, and one or more third fields, and the one or more third fields of the MAC CE indicate that the MAC CE will select a subset of the uplink TCI states, a non-transient computer-readable storage medium.; Claim 24 A non-transient computer-readable storage medium for storing one or more commands for wireless communication, wherein the one or more commands, when executed by one or more processors of a base station, cause the one or more processors to: transmit to a user equipment (UE) a wireless resource control signaling that constitutes an uplink TCI (transmission configuration indication) state pool comprising a plurality of candidate uplink TCI states associated with an uplink resource; and transmit to the UE a downlink signaling that identifies, among the plurality of candidate uplink TCI states included in the uplink TCI state pool, an uplink TCI state to be used for transmitting uplink communication on the uplink resource; And includes one or more commands for receiving the uplink communication from the UE on the uplink resource using an uplink receiving beam corresponding to an uplink transmitting beam associated with the uplink TCI state identified in the downlink signaling, and the downlink signaling includes a Media Access Control (MAC) control element (MAC-CE) for selecting a subset of uplink TCI states from a plurality of candidate uplink TCI states in the uplink TCI state pool; the downlink signaling further includes downlink control information (DCI) indicating the uplink TCI state to be used to transmit the uplink communication on the uplink resource from among the subset of uplink TCI states selected by the MAC-CE; the DCI includes a bit sequence for indicating the uplink TCI state to be used to transmit the uplink communication;And the above MAC CE has a structure comprising: a first field for a serving cell ID, a second field for a bandwidth portion ID, and one or more third fields, and the one or more third fields of the MAC CE indicate that the MAC CE will select a subset of the uplink TCI states, a non-transient computer-readable storage medium.; Claim 25 A device for wireless communication, means for receiving from a base station wireless resource control signaling that constitutes an uplink TCI state pool comprising a plurality of candidate uplink TCI (transmission configuration indication) states associated with an uplink resource; means for receiving from the base station downlink signaling that identifies an uplink TCI state to be used for transmitting uplink communication on the uplink resource among the plurality of candidate uplink TCI states included in the uplink TCI state pool; and means for transmitting the uplink communication to the base station using an uplink transmission beam based at least partially on the uplink TCI state identified in the downlink signaling, wherein the downlink signaling includes a Media Access Control (MAC) control element (MAC-CE) for selecting a subset of uplink TCI states from a plurality of candidate uplink TCI states in the uplink TCI state pool; the downlink signaling further includes downlink control information (DCI) indicating the uplink TCI state to be used for transmitting the uplink communication on the uplink resource among the subset of uplink TCI states selected by the MAC-CE; and the DCI includes a bit sequence for indicating the uplink TCI state to be used for transmitting the uplink communication. A device for wireless communication, wherein the MAC CE has a structure comprising: a first field for a serving cell ID, a second field for a bandwidth portion ID, and one or more third fields, and the one or more third fields of the MAC CE indicate that the MAC CE will select a subset of the uplink TCI states. Claim 26 A device for wireless communication, means for transmitting wireless resource control signaling to a user device (UE) that comprises an uplink TCI state pool including a plurality of candidate uplink TCI (transmission configuration indication) states associated with an uplink resource; and means for transmitting downlink signaling to the UE that identifies an uplink TCI state to be used for transmitting uplink communication on the uplink resource among the plurality of candidate uplink TCI states included in the uplink TCI state pool. and means for receiving the uplink communication from the UE on the uplink resource using an uplink receiving beam corresponding to an uplink transmitting beam associated with the uplink TCI state identified in the downlink signaling, wherein the downlink signaling includes a Media Access Control (MAC) control element (MAC-CE) for selecting a subset of uplink TCI states from a plurality of candidate uplink TCI states in the uplink TCI state pool; the downlink signaling further includes downlink control information (DCI) indicating the uplink TCI state to be used for transmitting the uplink communication on the uplink resource among the subset of uplink TCI states selected by the MAC-CE; and the DCI includes a bit sequence for indicating the uplink TCI state to be used for transmitting the uplink communication; A device for wireless communication, wherein the MAC CE has a structure comprising: a first field for a serving cell ID, a second field for a bandwidth portion ID, and one or more third fields, and the one or more third fields of the MAC CE indicate that the MAC CE will select a subset of the uplink TCI states.

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