Determining size of downlink control information

Abstract

Various aspects of the disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) can receive, from a base station, control information associated with a plurality of activated transmission configuration indicator (TCI) states, where a size of the control information is based at least in part on a subset of the plurality of activated TCI states. The UE can determine, based at least in part on the control information, one or more TCI states to use from the subset of the plurality of activated TCI states. Numerous other aspects are provided.

Description

TECHNICAL FIELD

[0001] Aspects of the present disclosure relate generally to wireless communication, and to techniques and apparatuses for determining a size of downlink control information. BACKGROUND

[0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems can employ multiple-access technologies 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 a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3 GPP).

[0003] A wireless network can include a number of base stations (BSs) that can support communication for a number of user equipment (UEs). A user equipment (UE) can communicate with a base station (BS) via the downlink and uplink. The downlink (or forward link) refers to the communication from the BS to the UE, and the uplink (or reverse link) refers to the communication from the UE to the BS. As will be described in more detail herein, a BS can be referred to as a Node B, a gNB, an access point (AP), a radio head, a transmit receive point (TRP), a new radio (NR) BS, a 5G Node B, and / or the like.

[0004] The above multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different wireless devices to communicate on a municipal, national, regional, and even global level. New Radio (NR), which can also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP- OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. Further improvements to LTE and NR can also be considered, such as supporting non-terrestrial networks. SUMMARY

[0005] In some aspects, a method of wireless communication performed by a UE includes receiving, from a base station, control information associated with a plurality of activated TCI states, wherein a size of the control information is based at least in part on a subset of the plurality of activated TCI states; and determining, based at least in part on the control information, one or more TCI states from the subset of the plurality of activated TCI states to use.

[0006] In some aspects, a method of wireless communication performed by a base station includes encoding control information associated with a plurality of activated TCI states, wherein a size of the control information is based at least in part on a subset of the plurality of activated TCI states; and transmitting, to a UE, the control information to trigger the UE to use one or more TCI states from the subset of the plurality of activated TCI states.

[0007] In some aspects, a method of wireless communication performed by a base station includes determining a number of activated TCI states associated with a UE; and transmitting, to the UE, control information that indicates one or more of the activated TCI states and has a size that is based at least in part on the determination.

[0008] In some aspects, a UE for wireless communication includes a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to receive, from a base station, control information associated with a plurality of activated TCI states, wherein a size of the control information is based at least in part on a subset of the plurality of activated TCI states; and determine, based at least in part on the control information, one or more TCI states from the subset of the plurality of activated TCI states to use.

[0009] In some aspects, a base station for wireless communication includes a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to encode control information associated with a plurality of activated TCI states, wherein a size of the control information is based at least in part on a subset of the plurality of activated TCI states; and transmit, to a UE, the control information to trigger the UE to use one or more TCI states from the subset of the plurality of activated TCI states.

[0010] In some aspects, a base station for wireless communication includes a memory and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to determine a number of activated TCI states associated with a UE; and transmit, to the UE, control information indicating one or more of the activated TCI states and having a size based at least in part on the determination.

[0011] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to receive, from a base station, control information associated with a plurality of activated TCI states, wherein a size of the control information is based at least in part on a subset of the plurality of activated TCI states; and determine, based at least in part on the control information, one or more TCI states from the subset of the plurality of activated TCI states to use.

[0012] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a base station, cause the base station to encode control information associated with a plurality of activated TCI states, wherein a size of the control information is based at least in part on a subset of the plurality of activated TCI states; and transmit, to a UE, the control information to trigger the UE to use one or more TCI states from the subset of the plurality of activated TCI states.

[0013] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a base station, cause the base station to determine a number of activated TCI states associated with a UE; and transmit, to the UE, control information indicating one or more of the activated TCI states and having a size that is based at least in part on the determination.

[0014] In some aspects, an apparatus for wireless communication includes means for receiving, from a base station, control information associated with a plurality of activated TCI states, wherein a size of the control information is based at least in part on a subset of the plurality of activated TCI states; and means for determining, based at least in part on the control information, one or more TCI states to use from the subset of the plurality of activated TCI states.

[0015] In some aspects, an apparatus for wireless communication includes means for encoding control information associated with a plurality of activated TCI states, wherein a size of the control information is based at least in part on a subset of the plurality of activated TCI states; and means for transmitting, to a UE, the control information to trigger the UE to use one or more TCI states from the subset of the plurality of activated TCI states.

[0016] In some aspects, an apparatus for wireless communication includes means for determining a number of activated TCI states associated with a UE; and means for transmitting, to the UE, control information indicating one or more of the activated TCI states and having a size that is based at least in part on the determination.

[0017] Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and / or processing system as substantially described herein with reference to and as illustrated by the drawings and specification.

[0018] The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows can be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be readily utilized as bases for the designing of other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions are not to be excluded from the scope of the appended claims. The characteristics of the concepts disclosed herein, both their organization and their method of operation, together with associated advantages will be better understood from the following description when considered in connection with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description, and is not intended as a definition of the limits of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to provide a more thorough understanding of the above-mentioned features of the present disclosure, a more particular description will be rendered by reference to specific aspects illustrated in the appended drawings. It is appreciated that the appended drawings are not intended to be exhaustive or limiting of the scope of the disclosure, as described herein. The same elements have the same reference numbers in different drawings.

[0020] Figure 1 is a diagram illustrating an example of a wireless network, in accordance with various aspects of the present disclosure.

[0021] Figure 2 is a diagram illustrating an example of a base station in communication with a UE in a wireless network, in accordance with various aspects of the present disclosure.

[0022] Figure 3 is a diagram illustrating an example of communicating between a base station and a UE using beams, in accordance with various aspects of the present disclosure.

[0023] Figure 4 is a diagram illustrating an example associated with determining a size of downlink control information (DCI), in accordance with various aspects of the present disclosure.

[0024] Figure 5 , Figure 6 and Figure 7 are diagrams illustrating example processes associated with determining a size of DCI, in accordance with various aspects of the present disclosure.

[0025] Figure 8 and Figure 9 are block diagrams of example apparatuses for wireless communication, in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION

[0026] Various aspects of the disclosure will now be described in more detail with reference to the drawings. However, the disclosure can be embodied in many different forms and should not be construed as limited to the specific aspects set forth throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein one skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus can be implemented or a method can be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover an apparatus or method which is implemented using only one or a combination of the aspects set forth herein. It will be appreciated that any aspect of the disclosure disclosed herein can be implemented by one or more elements of a claim.

[0027] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0028] It should be noted that while aspects can be described herein using terminology commonly associated with a 5G or NR radio access technology (RAT), aspects of the present disclosure can be applied to other RATs, such as a 3G RAT, a 4G RAT, and / or a RAT subsequent to 5G (e.g., 6G).

[0029] Figure 1is a diagram illustrating an example of a wireless network 100, in accordance with various aspects of the present disclosure. The wireless network 100 can be or can include elements of a 5G (NR) network, an LTE network, and / or the like. The wireless network 100 can include a number of base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 1 lOd) and other network entities. A base station (BS) is an entity that communicates with user equipment (UEs) and can also be referred to as an NR BS, a Node B, a gNB, a 5G node B (NB), an access point, a transmit receive point (TRP), and / or the like. Each BS can provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to a coverage area of a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0030] BSs can be referred to as macro BS, small cell, femto cell, and / or the like. A macro cell can cover a relatively large geographic area (e.g., 5 km in radius) and can allow unrestricted access by UEs with service subscriptions appropriate for the Figure 1 In an example as illustrated in FIG. 1, BS 110a can be a macro BS for a macro cell 102a, BS 110b can be a small cell BS for a small cell 102b, and BS 110c can be a pico BS for a pico cell 102c. A BS can support one or multiple (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5G NB,” and “cell” can be used interchangeably herein.

[0031] In some aspects, a cell can not necessarily be stationary, and the geographic area of the cell can move according to the location of a mobile BS. In some aspects, BSs can be interconnected to one another and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and / or the like using any suitable transport network.

[0032] Wireless network 100 can also 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 a 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 In the example shown in FIG. 1, relay BS 1 lOd can communicate with macro BS 110a and UE 120d in order to facilitate communication between BS 110a and UE 120d. A relay BS can also be referred to as a relay station, a relay base station, a relay, or the like.

[0033] Wireless network 100 can be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, or the like. These different types of BSs can have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100. For example, macro BSs can have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs can have lower transmit power levels (e.g., 0.1 to 2 Watts).

[0034] A network controller 130 can couple to a set of BSs and can provide coordination and control for these BSs. Network controller 130 can be

[0035] UEs 120 (e.g., 120a, 120b, 120c) can be dispersed throughout wireless network 100, and each UE can be stationary or mobile. A UE can also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a 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, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicular component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.

[0036] Some UEs can be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, e.g., robots, drones, remote devices, sensors, meters, monitors, location tags, etc. which can communicate with a base station, another device (e.g., remote device), or some other entity. A wireless node can provide, for example, connectivity for or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs can be considered Internet-of-Things (IoT) devices, and / or can be implemented as NB-IoT (narrowband

[0037] In general, any number of wireless networks can be deployed within a given geographic area. Each wireless network can support a particular RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, an air interface, etc. A frequency can also be referred to as a carrier, a frequency channel, etc. Each frequency channel can support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0038] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110. FIG. 2 shows a diagram of a wireless communications device 200 that supports techniques for determining a number of repetitions for a transmission in accordance with aspects of the present disclosure. Wireless communications device 200 can be an example of one or more aspects of base station 110 as described herein. Wireless communications device 200 can include receiver 210, communications manager 220, and transmitter 230.

[0039] Devices of wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided, based on frequency or wavelength, into various classes, bands, channels, and so on. For example, devices of wireless network 100 can communicate using an operating band having a first frequency range (FR1), which can span from 410 MHz to 7.125 GHz, and / or can communicate using an operating band having a second frequency range (FR2), which can span from 24.25 GHz to 52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a “sub-6 GHz” frequency band. Similarly, although FR2 is not the same as an extremely high frequency (EHF) frequency band, which is identified by the International Telecommunications Union (ITU) as spanning from 30 GHz to 300 GHz, FR2 is sometimes referred to as a “millimeter wave” frequency band. Thus, unless specifically stated otherwise, the term “sub-6 GHz” or similar terminology used herein can broadly represent frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless specifically stated otherwise, the term “millimeter wave” or similar terminology used herein can broadly represent frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 can be modified, and techniques described herein are applicable to those modified frequency ranges.

[0040] As described above, Figure 1 are provided as examples. Other examples can differ from what is described with respect to Figure 1 the examples described with respect to the examples described with respect to

[0041] Figure 2 is a schematic diagram illustrating an example 200 of a base station 110 in communication with a UE 120 in a wireless network 100, in accordance with various aspects of the present disclosure. The base station 110 can be equipped with T antennas 234a through 234t, and the UE 120 can be equipped with R antennas 252a through 252r, where T > 1 and R > 1 in general.

[0042] At base station 110, a transmit processor 220 can receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS(s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 can also process system information (e.g., for semi-static resource partitioning information (SRPI) and / or the like) and control information (e.g., CQI requests, grants, upper layer signaling, and / or the like) and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS), a demodulation reference signal (DMRS), and / or the like) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and can provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 can process a respective output symbol stream (e.g., for OFDM and / or the like) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t can be transmitted via T antennas 234a through 234t, respectively.

[0043] At the UE 120, the antennas 252a through 252r can receive the downlink signals from the base station 110 and / or other base stations and can provide received signals to the demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term “controller / processor” can refer to one or more controllers, one or more processors, or combinations thereof. A channel processor can determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 can be included in a housing 284.

[0044] The network controller 130 can include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 can include, for example, one or more devices in a core network. The network controller 130 can communicate with the base station 110 via the communication unit 294.

[0045] On the uplink, at the UE 120, a transmit processor 264 can receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.) from the controller / processor 280. Transmit processor 264 can also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 can be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 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 can include any combination of antennas 252, modulators and / or demodulators 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver can be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein, for example, as described with reference to Figures 4-7 FIGs. 13 through 16.

[0046] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communication. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receiver processor 238, transmitter processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein, for example, as referenced. Figures 4-7 As described.

[0047] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120 and / or Figure 2 Any other components may perform one or more techniques associated with determining the size of the DCI, as described in more detail elsewhere in this document. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component can perform or direct, for example Figure 5 Process 500 Figure 6 Process 600 Figure 7 The operation of process 700 and / or other processes as described herein. Memory 242 and 282 may store data and program code of base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code, program code, etc.) for wireless communication. For example, one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly or after compilation, translation, interpretation, etc.), may cause one or more processors, UE 120 and / or base station 110 to perform or direct, for example... Figure 5 Process 500 Figure 6 Process 600 Figure 7operations of process 700 and / or other processes as described herein. In some aspects, executing the instructions can include running the instructions, converting the instructions, compiling the instructions, interpreting the instructions, and the like.

[0048] In some aspects, an apparatus 800 of a UE (e.g., UE 120 and / or Figure 8 may include means for receiving, from a base station (e.g., base station 110 and / or Figure 9 may include means for determining, based at least in part on the control information, one or more TCI states from the subset of the plurality of activated TCI states to use. Means for the UE to perform operations described herein can include, for example, antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, and / or memory 282. In some aspects, the UE can further include means for receiving, from the base station, an indication of an association between the subset of the plurality of activated TCI states and the control information.

[0049] In some aspects, an apparatus 900 of a base station (e.g., base station 110 and / or Figure 9 may include means for encoding control information associated with a plurality of activated TCI states, wherein a size of the control information is based at least in part on a subset of the plurality of activated TCI states; and / or means for transmitting, to a UE (e.g., UE 120 and / or Figure 8 may include means for transmitting, to a UE (e.g., UE 120 and / or may include means for transmitting, to a UE (e.g., UE 120 and / or

[0050] In some aspects, an apparatus 900 of a base station (e.g., base station 110 and / or Figure 9 may include means for determining, for a UE (e.g., UE 120 and / or Figure 8a number of activated TCI states associated with the determined number of activated TCI states; and / or means for transmitting control information to the UE indicating one or more of the activated TCI states and having a size that is based at least in part on the determination. Means for a base station to perform operations described herein can include, for example, transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, and / or scheduler 246.

[0051] Although Figure 2 The blocks in FIG. 14A are illustrated as distinct components, but the functionality described above with regard to the blocks can be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with regard to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by or under the control of controller / processor 280.

[0052] As indicated above, Figure 2 are provided as examples. Other examples can differ from what is described in connection with Figure 2 the examples described in connection with

[0053] Figure 3 is a schematic diagram illustrating an example 300 of communicating between a base station and a UE using beams, in accordance with various aspects of the present disclosure. As Figure 3 As shown in FIG. 14A, base station 110 and UE 120 can communicate with one another. In some aspects, base station 110 and UE 120 can be included in a wireless network, such as wireless network 100. Base station 110 and UE 120 can communicate on a wireless access link, which can include uplink and downlink.

[0054] Base station 110 can transmit to UE 120 located within a coverage area of base station 110. Base station 110 and UE 120 can be configured for beamformed communications, where base station 110 can transmit using directional BS transmit beams in the direction of UE 120, and UE 120 can receive the transmissions using directional UE receive beams. Each BS transmit beam can have an associated beam ID, beam direction, or beam symbol, among other examples. Base station 110 can transmit downlink communications via one or more BS transmit beams 305.

[0055] The UE 120 can attempt to receive downlink transmissions via one or more UE receive beams 310, which can be configured at the receive circuitry of the UE 120 using different beamforming parameters. The UE 120 can identify a particular BS transmit beam 305 (shown as BS transmit beam 305-A) and a particular UE receive beam 310 (shown as UE receive beam 310-A) that provide a relatively favorable performance (e.g., best channel quality with a different measured combination of BS transmit beam 305 and UE receive beam 310). In some examples, the UE 120 can transmit an indication of which BS transmit beam 305 is identified by the UE 120 as a preferred BS transmit beam, and the base station 110 can select that BS transmit beam for transmissions to the UE 120. Thus, the UE 120 can achieve and maintain a beam pair link (BPL) with the base station 110 for downlink communications (e.g., a combination of BS transmit beam 305-A and UE receive beam 310-A), which can be further refined and maintained according to one or more established beam refinement procedures.

[0056] A downlink beam, such as a BS transmit beam 305 or a UE receive beam 310, can be associated with a transmission configuration indication (TCI) state. A TCI state can indicate a directionality or characteristics of a downlink beam, such as one or more QCL properties of the downlink beam. QCL properties can include, for example, Doppler shift, Doppler spread, average delay, delay spread, or spatial receive parameter, among other examples. In some examples, each BS transmit beam 305 can be associated with a synchronization signal block (SSB), and the UE 120 can indicate a preferred BS transmit beam 305 by transmitting an uplink transmission in resources of an SSB associated with the preferred BS transmit beam 305. A particular SSB can have an associated TCI state (e.g., for antenna port or for beamforming). In some examples, the base station 110 can indicate a downlink BS transmit beam 305 based at least in part on an antenna port QCL property that can be indicated by a TCI state. A TCI state can be associated with one set of downlink reference signals (e.g., SSBs and aperiodic, periodic, or semi-persistent channel state information reference signals (CSI-RS)) for different QCL types (e.g., different combinations of QCL types for Doppler shift, Doppler spread, average delay, delay spread, or spatial receive parameter, among other examples). Where a QCL type indicates a spatial receive parameter, the QCL type can correspond to an analog receive beamforming parameter of a UE receive beam 310 at the UE 120. Thus, the UE 120 can select a corresponding UE receive beam 310 from a set of BPLs based at least in part on the BS transmit beam 305 indicated by the base station 110 via a TCI indication.

[0057] The base station 110 can maintain a set of activated TCI states for downlink shared channel transmissions and a set of activated TCI states for downlink control channel transmissions. The set of activated TCI states for downlink shared channel transmissions can correspond to beams that the base station 110 uses for downlink transmissions on a physical downlink shared channel (PDSCH). The set of activated TCI states for downlink control channel communications can correspond to beams that the base station 110 can use for downlink transmissions on a physical downlink control channel (PDCCH) or in a control resource set (CORESET). The UE 120 can also maintain a set of activated TCI states for receiving downlink shared channel transmissions and CORESET transmissions. If a TCI state is activated for the UE 120, the UE 120 can have one or more antenna configurations based at least in part on the TCI state, and the UE 120 can not need to reconfigure antenna or antenna weighting configurations. In some examples, the set of activated TCI states (e.g., activated PDSCH TCI states and activated CORESET TCI states) for the UE 120 can be configured by a configuration message, such as a radio resource control (RRC) message.

[0058] Similarly, for uplink communications, the UE 120 can transmit in the direction of the base station 110 using a directional UE transmit beam, and the base station 110 can receive the transmission using a directional BS receive beam. Each UE transmit beam can have an associated beam ID, beam direction, or beam symbol, among other examples. The UE 120 can transmit uplink communications via one or more UE transmit beams 315.

[0059] The base station 110 can receive the uplink transmission via one or more BS receive beams 320. The base station 110 can identify a particular UE transmit beam 315 (shown as UE transmit beam 315-A) and a particular BS receive beam 320 (shown as BS receive beam 320-A) that provide a relatively favorable performance (e.g., best channel quality with different measured combinations of UE transmit beams 315 and BS receive beams 320). In some examples, the base station 110 can transmit an indication of which UE transmit beam 315 is identified by the base station 110 as a preferred UE transmit beam, and the base station 110 can select that preferred UE transmit beam for transmissions from the UE 120. Thus, the UE 120 and the base station 110 can reach and maintain a BPL for uplink communications (e.g., a combination of UE transmit beam 315-A and BS receive beam 320-A), which can be further refined and maintained according to one or more established beam refinement procedures. An uplink beam, such as a UE transmit beam 315 or a BS receive beam 320, can be associated with a spatial relation. The spatial relation can indicate a directionality or characteristic of the uplink beam, similar to one or more QCL properties described above.

[0060] As indicated above, Figure 3 are provided by way of example. Other examples can differ from those described Figure 3 without departing from the spirit of the disclosure.

[0061] In some cases, a UE can receive a downlink transmission using a TCI state (e.g., from a base station). As described above, a TCI state can indicate one or more reference signals (e.g., synchronization signals such as SSBs; CSI-RSs; and / or another type of reference signal) and associated channel properties (e.g., Doppler shift; Doppler spread; average delay; delay spread; one or more spatial parameters such as a spatial filter; and / or the like). A base station can configure a TCI state table (e.g., up to 128 TCI states indicated by a tsi-StatesToAddModList data structure as defined in 3GPP specifications and / or other similar data structure) using an RRC message (e.g., a PDSCH-Config message as defined in 3GPP specifications and / or other similar message). The base station can further activate a portion of the TCI states in the table (e.g., up to 8 TCI states) using a medium access control (MAC) layer control element (MAC-CE) for use on a downlink channel (e.g., a PDSCH and / or other downlink channel). The base station can schedule a transmission on the downlink channel using control information (e.g., DCI and / or other similar control information), and the control information can indicate one of those activated TCI states for the UE to use to receive data on the downlink channel scheduled by the control information.

[0062] Some control information formats can include fields with a fixed number of bits (e.g., TCI fields and / or other similar fields as defined in 3GPP specifications). For example, DCI format 1 1 in 3GPP specifications defines a TCI field as 3 bits. Thus, the TCI field in DCI format 1 1 includes enough bits to distinguish up to 8 TCI states. However, other control information formats can include fields with a variable number of bits. For example, DCI format 1 2 in 3GPP specifications can include a TCI field of 0, 1, 2, or 3 bits. Thus, such control information can not include enough bits to distinguish between all activated TCI states. When a UE applies a different TCI state than the one used by a base station to transmit on a downlink channel, the UE can experience lower quality and / or reliability on the downlink channel, which can degrade network performance.

[0063] Some techniques and apparatuses described herein allow a base station (e.g., base station 110) to determine a size of control information (e.g., DCI and / or other similar control information) so that a UE (e.g., UE 120) can distinguish between all activated TCI states. Other techniques and apparatuses described herein allow a UE 120 to determine an activated TCI state to use even if the size of the control information is not enough to distinguish between all activated TCI states. Thus, the UE 120 and the base station 110 can experience increased reliability and / or communication quality on a downlink channel (e.g., PDSCH and / or other downlink channel), which can improve network performance.

[0064] Figure 4 is a diagram illustrating an example 400 associated with determining a size of DCI, in accordance with aspects of the present disclosure. As shown in Figure 4 The base station 110 and the UE 120 can communicate with one another over a wireless network (e.g., the wireless network 100 of Figure 1 In some aspects, the base station 110 and the UE 120 can communicate over uplink channels (e.g., a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), and / or another type of uplink channel) and downlink channels (e.g., a PDCCH, a PDSCH, and / or another type of downlink channel).

[0065] As shown by reference number 405, the base station 110 can encode control information (e.g., DCI and / or other control information) associated with the plurality of activated TCI states. For example, the base station 110 can have transmitted and the UE 120 can have received a TCI state table (e.g., a tci-StatesToAddModList data structure as defined in 3GPP specifications and / or other similar data structure included in a PDSCH-Config message and / or other similar message as defined in 3GPP specifications). Moreover, the base station 110 can have transmitted and the UE 120 can have received an indication (e.g., a MAC-CE and / or other similar control element) of a portion of the TCI state table, where the portion includes the plurality of activated TCI states.

[0066] In some aspects, the control information can include DCI of format 1 2. Although the following description will focus on DCI of format 1 2, the description similarly applies to other control information and / or other control information formats.

[0067] In some aspects, the base station 110 can determine a quantity of activated TCI states associated with the UE 120. For example, as described above, the base station 110 can determine the quantity of activated TCI states in the portion of the TCI state table (e.g., indicated by the MAC-CE and / or other similar control element). Accordingly, the base station 110 can select a size of the control information based at least in part on determining the quantity of activated TCI states. For example, the base station 110 can select a size of m based at least in part on the expression min{2 n , 2 2 , 2 3} > m, where m corresponds to the quantity of activated TCI states and n corresponds to a size of bits. Accordingly, even when a format of the control information (e.g., DCI format 1 2 and / or other similar format) includes a variable length field for indicating one or more TCI states to use among the plurality of activated TCI states, the base station 110 can select a size for the field such that the UE 120 can distinguish between the plurality of activated TCI states. For example, DCI format 1 2 can be configured to have a TCI field of 2 bits, DCI format 1 1 can be configured to have a TCI field of 3 bits, and the base station 110 can select a size m based at least in part on the expression min{2 2 , 2 3} > m, such that the base station 110 can select the quantity of activated TCI states to not exceed 4.

[0068] Alternatively, the base station 110 can select a size of the control information based at least in part on a subset of the plurality of activated TCI states. For example, the subset can be smaller than the plurality of activated TCI states, such that the base station 110 (and the UE 120) can differentiate within the subset, even when the control information includes a field that has a smaller size than sufficient to differentiate among the plurality of activated TCI states.

[0069] In some aspects, the subset of the plurality of activated TCI states can be based at least in part on corresponding indices associated with the plurality of activated TCI states. For example, the subset of the plurality of activated TCI states can be based at least in part on an increasing order of the corresponding indices. Thus, in one example, the subset of the plurality of activated TCI states can be determined to be the first few activated TCI states, and the first few activated TCI states can be mapped to TCI codepoints of a TCI field in the DCI in turn. For example, when the DCI is configured to have a TCI field of size 1 bit and the plurality of activated TCI states have corresponding TCI state indices of 4, 5, 7, 10, 11, 13, 20, and 43, the subset of the plurality of TCI states mapped to TCI codepoints of the TCI field in the DCI can include those TCI states having corresponding indices of 4 and 5. Thus, if the TCI codepoint of the TCI field in the DCI has a value of “0,” TCI state 4 is indicated, and if the TCI codepoint of the TCI field in the DCI has a value of “1,” TCI state 5 is indicated.

[0070] In another example, the subset of the plurality of activated TCI states can be determined to be the last few activated TCI states, and the last few activated TCI states can be mapped to TCI codepoints of a TCI field in the DCI. For example, when the DCI is configured to have a TCI field of size 1 bit and the plurality of activated TCI states have corresponding TCI state indices of 4, 5, 7, 10, 11, 13, 20, and 43, the subset of the plurality of TCI states mapped to TCI codepoints of the TCI field in the DCI can include those TCI states having corresponding indices of 20 and 43. Thus, if the TCI codepoint of the TCI field in the DCI has a value of “0,” TCI state 20 is indicated, and if the TCI codepoint of the TCI field in the DCI has a value of “1,” TCI state 43 is indicated.

[0071] In another example, the plurality of activated TCI states can have corresponding indices of 0, 8, 12, 13, 33, 40, 101, and 107, such that the subset of the plurality of TCI states can include those TCI states having the corresponding indices of the first four activated TCI states 0, 8, 12, and 13 or the last four activated TCI states 33, 40, 101, and 107 (e.g., when the control information includes a TCI field of 2 bits to indicate the TCI states to be used).

[0072] In some aspects, the indices can be based at least in part on a configuration message (e.g., an RRC message and / or other similar configuration message) indicating a set of TCI states including the plurality of activated TCI states, a control element (e.g., a MAC-CE and / or other similar control element) activating the plurality of activated TCI states, or a combination thereof. For example, a TCI state table in the configuration message (e.g., as described above) can indicate corresponding indices for the set of TCI states. Accordingly, the control element can activate the plurality of TCI states using the corresponding indices, and the subset of the plurality of activated TCI states can be based at least in part on an order of those corresponding indices. Alternatively, the control element can include a plurality of codepoints indicating the plurality of TCI states in an order different from the order of the corresponding indices. For example, the control element can include a 0th codepoint set to 10 (e.g., to indicate the TCI state of the corresponding index of 10 in the table), a 1st codepoint set to 25 (e.g., to indicate the TCI state of the corresponding index of 25 in the table), and a 2nd codepoint set to 11 (e.g., to indicate the TCI state of the corresponding index of 11 in the table). Accordingly, the subset of the plurality of activated TCI states can be based at least in part on an order of those codepoints.

[0073] As shown in reference number 410, the base station 110 can transmit and the UE 120 can receive control information. In some aspects, as described above, the control information can indicate one or more of the activated TCI states and have a size that is based at least in part on a number of activated TCI states associated with the UE 120 that the base station 110 determines. Alternatively and as described above, the control information can indicate one or more of a subset of the activated TCI states and have a size that is based at least in part on the subset.

[0074] As shown by reference number 415, the UE 120 can determine the one or more TCI states to use based at least in part on the control information. In some aspects, as described above, the control information can have a size that is based at least in part on a number of activated TCI states associated with the UE 120 determined by the base station 110, and thus can indicate the one or more TCI states to use from the plurality of activated TCI states. Alternatively, and as described above, the control information can have a size that is based at least in part on a subset of the plurality of activated TCI states, and thus can indicate the one or more TCI states to use from the subset of the plurality of activated TCI states.

[0075] In some aspects, the plurality of activated TCI states can be based at least in part on a control element (e.g., a MAC-CE and / or other similar control element) associated with a single TRP, antenna port, and / or antenna panel of the base station 110. For example, the control element can include a TCI state activation / deactivation for a UE-specific PDSCH MAC CE and / or other similar control element as defined in 3GPP specifications. In some aspects, the base station 110 can have associated a CORESET pool identifier for the TRP and only configured a single CORESET pool identifier to a serving cell, such that the control element includes the identifier (e.g., a CORESET pool ID and / or other similar identifier as defined in 3GPP specifications). Alternatively, the base station 110 can not have configured a CORESET pool identifier for the TRP (e.g., when the TRP uses only a single bandwidth part in a serving cell associated with the base station 110). In one example, if a TCI field of a DCI format 1_2 has m bits, the TCI codepoints of the TCI field in the DCI format 1_2 can indicate the first or last 2m activated TCI states in the TCI state activation / deactivation MAC CE in turn, and the UE 120 can ignore the remaining activated TCI states when no CORESET pool identifier is configured or only a single CORESET pool identifier is configured in the serving cell. m

[0076] ​In some aspects, the plurality of activated TCI states can be based at least in part on a control element (e.g., a MAC-CE and / or other similar control element) associated with a CORESET pool identifier (e.g., a CORESET pool ID and / or other similar identifier as defined in 3GPP specifications) for one of the plurality of TRPs, antenna ports, and / or antenna panels of the base station 110. For example, the control element can include a TCI state activation / deactivation for a UE-specific PDSCH MAC CE and / or other similar control element as defined in 3GPP specifications. Accordingly, the base station 110 can activate a different plurality of TCI states for the plurality of TRPs such that the control element is associated with one of the TRPs and activates the corresponding plurality of TCI states. The base station 110 and the UE 120 can determine one or more TCI states to use from the subset based at least in part on the corresponding plurality of TCI states. In one example, when two different CORESET pool IDs (e.g., X = 0 or 1) are configured in a serving cell and the TCI field of DCI format 1_2 in the CORESET with CORESET pool ID for X has m bits, the TCI field of DCI format 1_2 can indicate the first or last 2 m activated TCI states in the TCI state activation / deactivation MAC CE associated with the CORESET pool ID for X in order, and the UE 120 can ignore the remaining activated TCI states.

[0077] In some aspects, the plurality of activated TCI states can be based at least in part on a control element (e.g., a MAC-CE and / or other similar control element) associated with the plurality of TRPs, antenna ports, and / or antenna panels of the base station 110. For example, the control element can include an enhanced TCI state activation / deactivation MAC CE for a UE-specific PDSCH and / or other similar control element as defined in 3GPP specifications. Accordingly, the base station 110 can activate pairs (or trios or more) of TCI states for the plurality of TRPs such that the control element activates the multiple pairs (or three or more) of TCI states. The base station 110 and the UE 120 can determine two (or three or more) TCI states to use based at least in part on the corresponding multiple pairs (or three or more) of TCI states.

[0078] For example, a control element (e.g., UE-specific PDSCH enhanced TCI state activation / deactivation MAC CE) can activate the 0th codepoint to activate a set of TCI states with corresponding indices 8 and 10, the 1st codepoint to activate a set of TCI states with corresponding indices 6 and 25, and the 2nd codepoint to activate a set of a single TCI state with corresponding index 11. In one example, if the TCI field of DCI format 1_2 has 1 bit, the TCI codepoints of the TCI field in DCI format 1_2 can sequentially indicate the first or last 2 activated codepoints in the MAC-CE, while the UE 120 can ignore the remaining codepoints. For example, if the first 2 activated codepoints in the MAC-CE are mapped to the TCI field in DCI, the TCI codepoint of the TCI field in DCI with a value of “0” indicates the 0th codepoint (e.g., a pair of TCI states with corresponding indices 8 and 10), and the TCI codepoint of the TCI field in DCI with a value of “1” indicates the 1st codepoint (e.g., a pair of TCI states with corresponding indices 6 and 25). In another example, if the last 2 activated codepoints in the MAC-CE are mapped to the TCI field in DCI, the TCI codepoint of the TCI field in DCI with a value of “0” indicates the 1st codepoint (e.g., a pair of TCI states with corresponding indices 6 and 25), and the TCI codepoint of the TCI field in DCI with a value of “1” indicates the 2nd codepoint (e.g., a single TCI state with corresponding index 11).

[0079] In some aspects, the base station 110 can have transmitted and the UE 120 can have received an indication of an association between a subset of the plurality of activated TCI states and control information. For example, the base station 110 can indicate which activated TCI states are to be indicated by the TCI field of DCI format 1_2, and a corresponding mapping between the activated TCI states and TCI codepoints in the TCI field of DCI. In some aspects, the indication can comprise an RRC message. For example, the indication can comprise a new field and / or data element in the PDSCH-Config data structure as defined in 3GPP specifications and / or other similar data structure. Alternatively, the indication can comprise a new data structure (e.g., bitmap and / or other mapping) that the base station 110 transmits to the UE 120 using RRC signaling. Additionally or alternatively, the indication can comprise a control element (e.g., MAC-CE and / or other similar control element). In some aspects, the indication can comprise a new field and / or data element in the MAC-CE and / or other similar control element. Alternatively, the indication can comprise a new control element (e.g., with bitmap and / or other mapping) that the base station 110 transmits to the UE 120.

[0080] Accordingly, the UE 120 can use the association to determine one or more TCI states to use (e.g., as described below in connection with reference number 415). For example, the plurality of activated TCI states can have corresponding indices of 4, 5, 7, 10, 11, 13, 20, and 43, and the association can map a bit zero to the second TCI state or the TCI state with index 5 and a bit one to the sixth TCI state or the TCI state with index 13, such that the subset of the plurality of TCI states can include those TCI states with corresponding indices of 5 and 13 (e.g., when the control information includes 1 bit to indicate the TCI state to use). In another example, the plurality of activated TCI states can have corresponding indices of 0, 8, 12, 13, 33, 40, 101, and 107, and the association can map “00” to the second TCI state or the TCI state with index 8, “01” to the third TCI state or the TCI state with index 12, “10” to the fifth TCI state or the TCI state with index 33, and “11” to the seventh TCI state or the TCI state with index 101, such that the subset of the plurality of TCI states can include those TCI states with corresponding indices of 8, 12, 33, and 101 (e.g., when the control information includes 2 bits to indicate the TCI state to use).

[0081] As shown in connection with reference number 420, based at least in part on the one or more TCI states to use, the base station 110 can transmit and the UE 120 can receive data on a downlink channel (e.g., a PDSCH and / or other downlink channel). The data can have been scheduled using the control information.

[0082] Using at least some of the techniques described in connection with Figure 4 the base station 110 can determine a size of the control information (e.g., DCI and / or other similar control information) so that the UE 120 can distinguish between all activated TCI states. Alternatively, using at least some of the techniques described in connection with Figure 4 the UE 120 can determine the activated TCI state to use even when the size of the control information is insufficient to distinguish between all activated TCI states. Thus, the UE 120 and the base station 110 can experience increased reliability and / or quality of communications on the downlink channel (e.g., as described above in connection with reference number 420).

[0083] As described above, Figure 4 are provided as examples. Other examples can differ from what is described with respect to the examples Figure 4 described with respect to the examples described with respect to the examples

[0084] Figure 5 is a schematic diagram illustrating an example process 500 that can be performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 500 is an example where a device 800 (e.g., a UE 120 and / or Figure 8 performs operations associated with determining a size of DCI.

[0085] As shown in Figure 5 some aspects, process 500 can include receiving, from a base station (e.g., base station 110 and / or apparatus 900), control information associated with a plurality of activated TCI states (block 510). For example, the UE (e.g., using reception component 802, depicted in Figure 9 FIG. 13) can receive, from a base station, control information associated with a plurality of activated TCI states, as described above. In some aspects, a size of the control information is based at least in part on a subset of the plurality of activated TCI states. Figure 8 As further shown in

[0086] some aspects, process 500 can include determining, based at least in part on the control information, one or more TCI states to use from the subset of the plurality of activated TCI states (block 520). For example, the UE (e.g., using determination component 808, depicted in Figure 5 FIG. 13) can determine, based at least in part on the control information, one or more TCI states to use from the subset of the plurality of activated TCI states, as described above. Figure 8 Process 500 can include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0087] In a first aspect, the subset of the plurality of activated TCI states is based at least in part on a corresponding index associated with the plurality of activated TCI states.

[0088] In a second aspect, alone or in combination with the first aspect, the index is based at least in part on a configuration message indicating a set of TCI states including the plurality of activated TCI states, a control element activating the plurality of activated TCI states, or a combination thereof.

[0089] In a third aspect, alone or in combination with one or more of the first and second aspects, the subset of the plurality of activated TCI states is based at least in part on an ascending order of the corresponding index.

[0090]

[0091] ​In a fourth aspect, alone or in combination with one or more of the first through third aspects, the plurality of activated TCI states is based at least in part on a control element from the base station associated with a single TRP of the base station.

[0092] In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the plurality of activated TCI states is based at least in part on a control element from the base station associated with a control resource pool identifier of one of a plurality of TRPs of the base station.

[0093] In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the one or more TCI states to use include two TCI states to use, and the plurality of activated TCI states is based at least in part on a control element from the base station associated with a plurality of TRPs of the base station.

[0094] In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the process 500 further includes receiving (e.g., using reception component 802) an indication of an association between a subset of the plurality of activated TCI states and control information from the base station, and the one or more TCI states to use are determined based at least in part on the indication of the association.

[0095] In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the indication of the association includes an RRC message or a control element.

[0096] In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the control information includes DCI of format 1 2.

[0097] Although Figure 5 An example block of the process 500 is shown, but in some aspects, the process 500 can include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Figure 5 depicted in FIG. 9. Moreover or alternatively, two or more of the blocks of the process 500 can be performed in parallel.

[0098] Figure 6 is a schematic diagram illustrating an example process 600 performed, for example, by a base station, in accordance with various aspects of the present disclosure. Example process 600 is an example where a base station (e.g., base station 110 and / or Figure 9 of apparatus 900 of FIG. 9) performs operations associated with determining a size of DCI.

[0099] As Figure 6As shown in FIG. 6, in some aspects, process 600 can include encoding control information associated with a plurality of activated TCI states (block 610). For example, the base station (e.g., using encoding component 908, depicted in FIG. 9) can encode control information associated with a plurality of activated TCI states, as described above. In some aspects, a size of the control information is based at least in part on a subset of the plurality of activated TCI states. Figure 8

[0100] As further shown in FIG. 6, in some aspects, process 600 can include transmitting, to a UE (e.g., UE 120 and / or apparatus 800 of FIG. 8), the control information to trigger the UE to use one or more TCI states from the subset of the plurality of activated TCI states (block 620). For example, the base station (e.g., using transmission component 904, depicted in FIG. 9) can transmit, to the UE, the control information to trigger the UE to use one or more TCI states from the subset of the plurality of activated TCI states, as described above. Figure 6 Figure 8 Figure 9 Process 600 can include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0101] Process 600 can include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0102] In a first aspect, the subset of the plurality of activated TCI states is based at least in part on a corresponding index associated with the plurality of activated TCI states.

[0103] In a second aspect, alone or in combination with the first aspect, the index is based at least in part on a configuration message indicating a set of TCI states including the plurality of activated TCI states, a control element activating the plurality of activated TCI states, or a combination thereof.

[0104] In a third aspect, alone or in combination with one or more of the first and second aspects, the subset of the plurality of activated TCI states is based at least in part on an ascending order of the corresponding index.

[0105] In a fourth aspect, alone or in combination with one or more of the first through third aspects, the plurality of activated TCI states is based at least in part on a control element from the base station associated with a single TRP of the base station.

[0106] In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the plurality of activated TCI states is based at least in part on a control element from the base station associated with a control resource pool identifier of one of a plurality of TRPs of the base station.

[0107] ​​​In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the one or more TCI states to use include two TCI states to use, and the plurality of activated TCI states is based at least in part on a control element from the base station associated with a plurality of TRPs of the base station.

[0108] In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the process 600 further includes transmitting (e.g., using the transmission component 904) an indication of an association between the subset of the plurality of activated TCI states and the control information to the UE, and determining the one or more TCI states to use based at least in part on the indication of the association.

[0109] In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the indication of the association includes an RRC message or a control element.

[0110] In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the control information includes DCI of format 1 2.

[0111] Although Figure 6 Example blocks of the process 600 are illustrated, but in some aspects, the process 600 can include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Figure 6 In addition or alternatively, two or more of the blocks of the process 600 can be performed in parallel.

[0112] Figure 7 FIG. 7 is a schematic illustration of an example process 700 that shows, for example, example operations performed by a base station, in accordance with aspects of the present disclosure. Example process 700 is an example of a process in which a base station (e.g., base station 110 and / or Figure 9 apparatus 900 of FIG. 8) performs operations associated with determining a size of DCI.

[0113] As Figure 7 shown in FIG. 8, in some aspects, the process 700 can include determining a number of activated TCI states associated with a UE (e.g., UE 120 and / or Figure 8 apparatus 800) (block 710). For example, the base station (e.g., using encoding component 908 depicted in FIG. 8) can determine a number of activated TCI states associated with the UE, as described above. Figure 9

[0114] As Figure 7 ​As further shown in FIG. 7, in some aspects, process 700 can include transmitting, to the UE, control information indicating one or more of the activated TCI states and having a size that is based at least in part on the determination (block 720). For example, the base station (e.g., using transmission component 904, depicted in FIG. 9) can transmit, to the UE, control information indicating one or more of the activated TCI states and having a size that is based at least in part on the determination, as described above. Figure 9 As further shown in FIG. 7, in some aspects, process 700 can include transmitting, to the UE, control information indicating one or more of the activated TCI states and having a size that is based at least in part on the determination (block 720). For example, the base station (e.g., using transmission component 904, depicted in FIG. 9) can transmit, to the UE, control information indicating one or more of the activated TCI states and having a size that is based at least in part on the determination, as described above.

[0115] Process 700 can include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0116] In a first aspect, the size is based at least in part on an expression of the form: 2 n ≥ m, where m corresponds to a number of activated TCI states and n corresponds to a size of bits.

[0117] In a second aspect, alone or in combination with the first aspect, the control information includes DCI of format 1_2.

[0118] Although Figure 7 Example blocks of process 700 are shown, but in some aspects, process 700 can include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. 7. Additionally, or alternatively, two or more of the blocks of process 700 can be performed in parallel. Figure 7 In a first aspect, the size is based at least in part on an expression of the form: 2

[0119] Figure 8 FIG. 8 is a block diagram of an example apparatus 800 for wireless communication. The apparatus 800 can be a UE, or a UE can include the apparatus 800. In some aspects, the apparatus 800 includes a reception component 802 and a transmission component 804, which can be in communication with one another (for example, via one or more buses and / or one or more other components). As shown, the apparatus 800 can communicate with another apparatus 806 (such as a UE, a base station, or another wireless communication device) using the reception component 802 and the transmission component 804. As further shown, the apparatus 800 can include a determination component 808, among other examples.

[0120] In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to one or more of processes 500, 600, and / or 700. For example, the apparatus 800 can include means for performing one or more operations described herein with reference to one or more of processes 500, 600, and / or 700. In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to one or more of processes 500, 600, and / or 700, using the reception component 802, the transmission component 804, and / or one or more other components of the apparatus 800. Figure 4 In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to one or more of processes 500, 600, and / or 700. For example, the apparatus 800 can include means for performing one or more operations described herein with reference to one or more of processes 500, 600, and / or 700. In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to one or more of processes 500, 600, and / or 700, using the reception component 802, the transmission component 804, and / or one or more other components of the apparatus 800. Figure 5 In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to one or more of processes 500, 600, and / or 700. For example, the apparatus 800 can include means for performing one or more operations described herein with reference to one or more of processes 500, 600, and / or 700. In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to one or more of processes 500, 600, and / or 700, using the reception component 802, the transmission component 804, and / or one or more other components of the apparatus 800. Figure 8 In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to one or more of processes 500, 600, and / or 700. For example, the apparatus 800 can include means for performing one or more operations described herein with reference to one or more of processes 500, 600, and / or 700. In some aspects, the apparatus 800 can be configured to perform one or more operations described herein with reference to one or more of processes 500, 600, and / or 700, using the reception component 802, the transmission component 804, and / or one or more other components of the apparatus 800.Figure 2 one or more components of the described UE. Additionally or alternatively, Figure 8 one or more components illustrated in FIG. 10 can be implemented within the one or more components of the described UE. Additionally or alternatively, one or more components of the set of components can be implemented at least in part as software stored in a memory. Figure 2 Additionally or alternatively, one or more components of the set of components can be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) can be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.

[0121] The reception component 802 can receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 806. The reception component 802 can provide received communications to one or more other components of the apparatus 800. In some aspects, the reception component 802 can perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and can provide the processed signals to the one or more other components of the apparatus 806. In some aspects, the reception component 802 can include one or more antennas, a demodulator, a MIMO detector, a receive processor, a controller / processor, a memory, or a combination thereof, of the UE described above in connection with Figure 2 The reception component 802 can receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 806. The reception component 802 can provide received communications to one or more other components of the apparatus 800. In some aspects, the reception component 802 can perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and can provide the processed signals to the one or more other components of the apparatus 806. In some aspects, the reception component 802 can include one or more antennas, a demodulator, a MIMO detector, a receive processor, a controller / processor, a memory, or a combination thereof, of the UE described above in connection with

[0122] The transmission component 804 can transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 806. In some aspects, one or more other components of the apparatus 806 can generate communications and can provide the generated communications to the transmission component 804 for transmission to the apparatus 806. In some aspects, the transmission component 804 can perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and can transmit the processed signals to the apparatus 806. In some aspects, the transmission component 804 can include one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of the UE described above in connection with Figure 2 The transmission component 804 can transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 806. In some aspects, one or more other components of the apparatus 806 can generate communications and can provide the generated communications to the transmission component 804 for transmission to the apparatus 806. In some aspects, the transmission component 804 can perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and can transmit the processed signals to the apparatus 806. In some aspects, the transmission component 804 can include one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of the UE described above in connection with

[0123] In some aspects, the reception component 802 can receive, from the apparatus 806, control information associated with a plurality of activated TCI states. In some aspects, a size of the control information can be based at least in part on a subset of the plurality of activated TCI states. Accordingly, the determination component 808 can determine, based at least in part on the control information, one or more TCI states to use from the subset of the plurality of activated TCI states. In some aspects, the determination component 808 can include one or more of the above-described reception processors, controllers / processors, memories, or combinations thereof. Accordingly, the reception component 802 can receive data from the apparatus 806 using the one or more TCI states (e.g., by applying one or more properties based at least in part on one or more QCL rules indicated by the one or more TCI states) determined by the determination component 808. Figure 2 In some aspects, the reception component 802 can further receive, from the apparatus 806, an indication of an association between a subset of the plurality of activated TCI states and the control information. Accordingly, the determination component 808 can determine the one or more TCI states to use based at least in part on the indication of the association.

[0124] In some aspects, the reception component 802 can further receive, from the apparatus 806, an indication of an association between a subset of the plurality of activated TCI states and the control information. Accordingly, the determination component 808 can determine the one or more TCI states to use based at least in part on the indication of the association.

[0125] Figure 8 The number and arrangement of components shown in FIG. 9 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 9. Additionally, or alternatively, two or more components shown in FIG. 9 can be implemented within a single component, or a single component shown in FIG. 9 can be implemented as multiple, distributed components. Further, it will be appreciated that one or more components illustrated in FIG. 9, can perform one or more functions described as being performed by one or more other components illustrated in FIG. 9. Figure 8 The number and arrangement of components shown in FIG. 9 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 9. Additionally, or alternatively, two or more components shown in FIG. 9 can be implemented within a single component, or a single component shown in FIG. 9 can be implemented as multiple, distributed components. Further, it will be appreciated that one or more components illustrated in FIG. 9, can perform one or more functions described as being performed by one or more other components illustrated in FIG. 9. Figure 8 The number and arrangement of components shown in FIG. 9 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 9. Additionally, or alternatively, two or more components shown in FIG. 9 can be implemented within a single component, or a single component shown in FIG. 9 can be implemented as multiple, distributed components. Further, it will be appreciated that one or more components illustrated in FIG. 9, can perform one or more functions described as being performed by one or more other components illustrated in FIG. 9. Figure 8 The number and arrangement of components shown in FIG. 9 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 9. Additionally, or alternatively, two or more components shown in FIG. 9 can be implemented within a single component, or a single component shown in FIG. 9 can be implemented as multiple, distributed components. Further, it will be appreciated that one or more components illustrated in FIG. 9, can perform one or more functions described as being performed by one or more other components illustrated in FIG. 9. Figure 8 The number and arrangement of components shown in FIG. 9 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 9. Additionally, or alternatively, two or more components shown in FIG. 9 can be implemented within a single component, or a single component shown in FIG. 9 can be implemented as multiple, distributed components. Further, it will be appreciated that one or more components illustrated in FIG. 9, can perform one or more functions described as being performed by one or more other components illustrated in FIG. 9. Figure 8 The number and arrangement of components shown in FIG. 9 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in FIG. 9. Additionally, or alternatively, two or more components shown in FIG. 9 can be implemented within a single component, or a single component shown in FIG. 9 can be implemented as multiple, distributed components. Further, it will be appreciated that one or more components illustrated in FIG. 9, can perform one or more functions described as being performed by one or more other components illustrated in FIG. 9.

[0126] Figure 9 is a block diagram of an example apparatus 900 for wireless communication. The apparatus 900 can be a base station, or a base station can include the apparatus 900. In some aspects, the apparatus 900 includes a reception component 902 and a transmission component 904, which can be in communication with one another (for example, via one or more buses and / or one or more other components). As shown, the apparatus 900 can communicate with another apparatus 906 (such as a UE, a base station, or another wireless communication device) using the reception component 902 and the transmission component 904. As further shown, the apparatus 900 can include an encoding component 908, among other examples.

[0127] In some aspects, the apparatus 900 can be configured to perform the operations described herein with regard to the above-described base station. For example, the reception component 902 and the transmission component 904, in conjunction with one another or with other components of the apparatus 900, can perform operations described herein with regard to a base station. Figure 4One or more operations described herein. Additionally or alternatively, device 900 may be configured to perform one or more processes described herein, such as Figure 6 Process 600 Figure 7 Process 700, or a combination thereof. In some aspects, device 900 and / or Figure 9 One or more components shown may include the above-mentioned components. Figure 2 One or more components of the described base station. Additionally or alternatively, Figure 9 One or more components shown can be combined with the above. Figure 2 The description refers to implementation within one or more components. Alternatively, one or more components in the set of components may be implemented, at least partially, as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of that component.

[0128] Receiver 902 may receive communications from device 906, such as reference signals, control information, data communications, or combinations thereof. Receiver 902 may provide the received communications to one or more other components of device 900. In some aspects, receiver 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 signal to one or more other components of device 906. In some aspects, receiver 902 may include the elements described above. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0129] Transmitting component 904 can transmit communications (such as reference signals, control information, data communications, or combinations thereof) to device 906. In some aspects, one or more other components of device 906 can generate communications and provide the generated communications to transmitting component 904 for transmission to device 906. In some aspects, transmitting component 904 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples) on the generated communications and can transmit the processed signal to device 906. In some aspects, transmitting component 904 can include the above-described combinations. Figure 2 The described base station includes one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof. In some aspects, the transmit component 904 may be co-located with the receive component 902 in a transceiver.

[0130] In some aspects, the encoding component 908 can encode control information associated with a plurality of activated TCI states. In some aspects, a size of the control information is based at least in part on a subset of the plurality of activated TCI states that are activated. In some aspects, the encoding component 908 can include one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of the base station described above in connection with Fig. 2. Accordingly, the transmitting component 904 can transmit control information to the apparatus 906 to trigger the apparatus 906 to use one or more TCI states from the subset of the plurality of activated TCI states. Figure 2 In some aspects, the transmitting component 904 can further transmit, to the apparatus 906, an indication of an association between the subset of the plurality of activated TCI states and the control information. Accordingly, the encoding component 908 can determine the one or more TCI states to use based at least in part on the indication of the association.

[0131] In some aspects, the transmitting component 904 can further transmit, to the apparatus 906, an indication of an association between the subset of the plurality of activated TCI states and the control information. Accordingly, the encoding component 908 can determine the one or more TCI states to use based at least in part on the indication of the association.

[0132] In some aspects, the encoding component 908 can determine a number of activated TCI states associated with the apparatus 906. Accordingly, the transmitting component 904 can transmit, to the apparatus 906, control information indicating one or more of the activated TCI states and having a size based at least in part on the determination. For example, the encoding component 908 can encode control information having a size based at least in part on an expression of the form 2 n ≥ m, where m corresponds to the number of activated TCI states and n corresponds to a size of bits.

[0133] Figure 9 The number and arrangement of components shown in Fig. 9 are provided as an example. In practice, there can be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 9. Additionally, or alternatively, two or more components shown in Fig. 9 can be implemented within a single component, or a single component shown in Fig. 9 can be implemented as multiple, distributed components. Furthermore, the various components illustrated in Fig. 9 can include any of the components described in connection with Fig. 2. Figure 9 The various components illustrated in Fig. 9 can be implemented in hardware, software, firmware, or a combination thereof, including one or more Figure 9 The various components illustrated in Fig. 9 can be implemented in hardware, software, firmware, or a combination thereof, including one or more Figure 9 The various components illustrated in Fig. 9 can be implemented in hardware, software, firmware, or a combination thereof, including one or more Figure 9 The various components illustrated in Fig. 9 can be implemented in hardware, software, firmware, or a combination thereof, including one or more Figure 9 The various components illustrated in Fig. 9 can be implemented in hardware, software, firmware, or a combination thereof, including one or more

[0134] The above disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations can be possible based on the disclosure considered in light of the above disclosure, or can be obtained from the practice of the aspects.

[0135] As used herein, the term “component” is intended to be broadly construed as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software. It will be apparent that systems and / or methods described herein can be implemented in different forms of hardware, firmware, and / or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and / or methods were described herein without reference to specific software code — it being understood that software and hardware can be designed to implement the systems and / or methods based, at least in part, on the description herein.

[0136] As used herein, depending on the context, satisfying a threshold can refer to a value being 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, not equal to the threshold, and / or the like.

[0137] Even if a particular combination is not recited in the claims and / or disclosed in the specification, the combination can still be claimed and / or disclosed in the specification. Indeed, many of the features described herein can be combined in ways not expressly recited in the claims and / or disclosed in the specification. Although each dependent claim listed below can only directly depend from one claim, the disclosure of each aspect includes each dependent claim in combination with every other claim in the set of claims. Phrases such as “at least one of’ a list of items refers to any combination of those items, including single members. As an example, “at least one of a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination of multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c).

[0138] No element, act or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles “a” and “an” are intended to include one or more items, and can be used interchangeably with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items referenced, and can be used interchangeably with “the one or more.” Also, as used herein, the terms “set” and “group” are intended to include one or more items (for example, related items, unrelated items, a combination of related and unrelated items, or the like), and can be used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Also, as used herein, the terms “has,” “have,” “having,” or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise. Also, as used herein, the term “or” is intended to be inclusive when used in a series and can be used interchangeably with “and / or,” unless explicitly stated otherwise (e.g., if used in combination with “either” or “only one of’).

Claims

1. A method for wireless communication performed by a user equipment (UE), comprising: Downlink Control Information (DCI) of format 1_2 is received from a network entity. The DCI includes indicators associated with a first number of code points, which is less than a second number of activated Transmission Configuration Indicator (TCI) states. The DCI includes an m-bit TCI field, where m is an integer. The first number of code points is associated with a subset of the second number of activated TCI states, and the subset includes 2 out of the second number of activated TCI states. m Each TCI state; and The TCI state from the subset is applied according to the indicator.

2. The method according to claim 1, wherein, The subset is based at least in part on the corresponding indexes associated with the second number of activated TCI states.

3. The method according to claim 2, wherein, The index is based at least in part on a configuration message indicating a set of TCI states including the second number of activated TCI states, a control element that activates the second number of activated TCI states, or a combination thereof.

4. The method according to claim 2, wherein, The subset is based at least in part on the incremental order of the corresponding indices.

5. The method according to claim 1, wherein, The second number of activated TCI states are at least in part based on control elements from the network entity that are associated with a single transmit-receive point of the network entity.

6. The method according to claim 1, wherein, The second number of activated TCI states are at least partially based on control elements from the network entity, which are associated with a control resource pool identifier of one of the network entity's multiple transmit-receive points.

7. The method according to claim 1, wherein, The second number of activated TCI states are at least in part based on control elements from the network entity that are associated with multiple transmit-receive points of the network entity.

8. The method according to claim 1, further comprising: Receive an indication from the network entity regarding the association between the subset and the DCI. The TCI status is determined at least in part based on the indication of the association.

9. The method according to claim 8, wherein, The associated indication includes radio resource control messages or control elements.

10. A method for wireless communication performed by a network entity, comprising: Send downlink control information (DCI) in format 1_2. The DCI includes indicators associated with a first number of code points, which is less than a second number of activated Transport Configuration Indicator (TCI) states. The DCI includes an m-bit TCI field, where m is an integer. The first number of code points is associated with a subset of the second number of activated TCI states, and the subset includes 2 out of the second number of activated TCI states. m Each TCI state; and The TCI state from the subset is applied according to the indicator.

11. The method according to claim 10, wherein, The subset is based at least in part on the corresponding indexes associated with the second number of activated TCI states.

12. The method according to claim 11, wherein, The index is based at least in part on a configuration message indicating a set of TCI states including the second number of activated TCI states, a control element that activates the second number of activated TCI states, or a combination thereof.

13. The method according to claim 11, wherein, The subset is based at least in part on the incremental order of the corresponding indices.

14. The method of claim 10, wherein, The second number of activated TCI states are at least in part based on control elements from the network entity that are associated with a single transmit-receive point of the network entity.

15. The method according to claim 10, wherein, The second number of activated TCI states are at least partially based on control elements from the network entity, which are associated with a control resource pool identifier of one of the network entity's multiple transmit-receive points.

16. The method of claim 10, wherein, The second number of activated TCI states are at least in part based on control elements from the network entity that are associated with multiple transmit-receive points of the network entity.

17. The method of claim 10, further comprising: Send an indication to the UE of the association between the subset and the DCI. The TCI status is determined at least in part based on the indication of the association.

18. The method according to claim 17, wherein, The associated indication includes radio resource control messages or control elements.

19. A user equipment for wireless communication, comprising: Memory; as well as One or more processors operatively coupled to the memory, the memory and the one or more processors being configured to perform the method according to any one of claims 1-9.

20. A base station for wireless communication, comprising: Memory; as well as One or more processors operatively coupled to the memory, the memory and the one or more processors being configured to perform the method according to any one of claims 10-18.

21. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions, when executed by one or more processors of a user equipment (UE), cause the UE to perform the method according to any one of claims 1-9.

22. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions, when executed by one or more processors of a base station, cause the base station to perform the method according to any one of claims 10-18.

23. An apparatus for wireless communication, comprising a unit for performing the method according to any one of claims 1-9.

24. An apparatus for wireless communication, comprising a unit for performing the method according to any one of claims 10-18.

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