Downlink signal reception using antenna panel switching

Abstract

The present disclosure relates to downlink signal reception with antenna panel switching. The present disclosure discloses an apparatus, system and method for performing downlink signal reception with antenna panel switching in a wireless communication system. A cellular base station may receive an indication of an antenna panel activation delay from a wireless device. The cellular base station may select a scheduling offset for transmission to the wireless device based at least in part on the antenna panel activation delay. If it is expected that the wireless device may perform antenna panel activation to receive the transmission, the scheduling offset may be selected to be at least the length of the antenna panel activation delay. The cellular base station may schedule the transmission to the wireless device using the selected scheduling offset, and may perform the transmission to the wireless device with the selected scheduling offset after scheduling the transmission to the wireless device.

Description

Technical Field

[0001] The present application relates to wireless devices, and more particularly to apparatus, systems, and methods for performing downlink signal reception using antenna panel switching in a wireless communication system. Background Art

[0002] The use of wireless communication systems is growing rapidly. In recent years, wireless devices such as smart phones and tablet computers have become increasingly sophisticated. In addition to supporting phone calls, many mobile devices now also provide access to the Internet, email, text messaging, and navigation using the Global Positioning System (GPS), and are capable of operating sophisticated applications that utilize these capabilities. In addition, there are a number of different wireless communication technologies and standards. Some examples of wireless communication standards include GSM, UMTS (e.g., associated with WCDMA or TD-SCDMA air interfaces), LTE, Advanced LTE (LTE-A), HSPA, 3GPP2 CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD), IEEE 802.11 (WLAN or Wi-Fi), BLUETOOTH (BLUETOOTH), and UMTS (e.g., associated with WCDMA or TD-SCDMA air interfaces). TM wait.

[0003] The introduction of an ever-increasing number of features and functions in wireless communication devices has also created a continuing need for improved wireless communications and improved wireless communication devices. In order to increase coverage and better serve the increased demand and scope of intended uses of wireless communications, in addition to the above-mentioned communication standards, there are also wireless communication technologies being developed, including fifth generation (5G) new radio (NR) communications. Therefore, there is a need for improvements in the field of supporting such development and design. Summary of the invention

[0004] The embodiments relate to apparatus, systems, and methods for performing downlink signal reception using antenna panel switching in a wireless communication system.

[0005] According to the techniques described herein, cellular base stations and wireless devices may utilize a framework to determine the time required for a wireless device to activate an inactive antenna panel and determine under what circumstances to provide the wireless device with additional time between scheduling a transmission and performing the transmission to perform such antenna panel activation.

[0006] According to at least some embodiments, use of the techniques described herein may improve a wireless device's ability to effectively utilize multiple antenna panels to improve cellular communication performance, with potentially reduced power consumption costs relative to always maintaining those multiple antenna panels in an active state.

[0007] The techniques described herein may be implemented in and / or used with a number of different types of devices, including, but not limited to, any of cellular telephones, tablet computers, wearable computing devices, portable media players, and a variety of other computing devices.

[0008] This disclosure is intended to provide a brief overview of some of the topics described in this document. Therefore, it should be understood that the above features are only examples and should not be interpreted as narrowing the scope or essence of the topics described herein in any way. Other features, aspects and advantages of the topics described herein will become apparent through the following detailed description, drawings and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] A better understanding of the present subject matter may be obtained when the following detailed description of various embodiments is considered in conjunction with the following drawings, in which:

[0010] Figure 1 illustrates an exemplary wireless communication system according to some embodiments;

[0011] Figure 2 illustrates a base station (BS) in communication with a user equipment (UE) device according to some embodiments;

[0012] Figure 3 An example block diagram illustrating a UE according to some embodiments;

[0013] Figure 4 illustrates an exemplary block diagram of a BS according to some embodiments;

[0014] Figure 5 illustrates an exemplary block diagram of a cellular communication circuit according to some embodiments;

[0015] Figure 6 is a flow chart illustrating an example method for performing downlink signal reception with support for antenna panel switching according to some embodiments;

[0016] Figure 7 illustrates aspects of an exemplary scenario according to some embodiments, wherein a wireless device rotates and moves over time, and antenna panels are switched to account for the rotation and movement;

[0017] Figure 8 is a timing diagram showing scheduling and transmission timing of possible aperiodic CSI-RS transmissions for beam management;

[0018] Figures 9 and 10 is a flow chart illustrating an example method for selecting a scheduling offset in various scenarios according to some embodiments; and

[0019] Fig.11 Possible transmission timelines according to some embodiments are shown, where a scheduling offset for downlink communications may be determined based on whether a TCI state for the downlink communications is considered out of date.

[0020] Although the features described herein are susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and described in detail herein. However, it should be understood that the drawings and detailed description thereof are not intended to limit this document to the specific forms disclosed, but on the contrary, their purpose is to cover all modifications, equivalents and alternatives that fall within the spirit and scope of the subject matter as defined by the appended claims. DETAILED DESCRIPTION

[0021] the term

[0022] The following is a glossary of terms used in this disclosure:

[0023] Memory medium - any of various types of non-transitory memory devices or storage devices. The term "memory medium" is intended to include installation media, such as CD-ROM, floppy disk or tape devices; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM, etc.; non-volatile memory such as flash memory, magnetic media, for example, hard disk drive or optical storage device; registers or other similar types of memory elements, etc. The memory medium may also include other types of non-transitory memory or combinations thereof. In addition, the memory medium may be located in the first computer system executing the program, or may be located in a different second computer system connected to the first computer system via a network such as the Internet. In the latter case, the second computer system may provide program instructions to the first computer for execution. The term "memory medium" may include two or more memory media that may reside in different locations in different computer systems connected, for example, via a network. The memory medium may store program instructions (e.g., expressed as a computer program) that may be executed by one or more processors.

[0024] Carrier Medium—storage media as described above, and physical transmission media such as a bus, network, and / or other physical transmission media that transport signals such as electrical, electromagnetic or digital signals.

[0025] Programmable hardware element - includes various hardware devices that include multiple programmable function blocks connected via programmable interconnects. Examples include FPGA (field programmable gate array), PLD (programmable logic device), FPOA (field programmable object array), and CPLD (complex PLD). Programmable function blocks can vary from fine-grained (combinational logic unit or lookup table) to coarse-grained (arithmetic logic unit or processor core). Programmable hardware elements may also be referred to as "configurable logic units".

[0026] Computer System - Any of various types of computing or processing systems, including a personal computer system (PC), a mainframe computer system, a workstation, a network appliance, an Internet appliance, a personal digital assistant (PDA), a television system, a grid computing system, or other devices or combinations of devices. In general, the term "computer system" can be broadly defined to encompass any device (or combination of devices) having at least one processor that executes instructions from a memory medium.

[0027] User Equipment (UE) (or "UE device") - any of various types of computer systems or devices that are mobile or portable and that perform wireless communications. Examples of UE devices include mobile phones or smartphones (e.g., iPhones, TM , based on Android TM phones), portable gaming devices (e.g., Nintendo DS TM , PlayStation Portable TM 、Gameboy Advance TM , iPhone TM ), laptops, wearable devices (e.g., smart watches, smart glasses), PDAs, portable Internet devices, music players, data storage devices or other handheld devices, etc. In general, the term "UE" or "UE device" can be broadly defined to cover any electronic device, computing device and / or telecommunication device (or combination of devices) that can be easily transmitted by a user and capable of wireless communication.

[0028] Wireless Device—Any of various types of computer systems or devices that perform wireless communications. A wireless device may be portable (or mobile), or may be fixed or fixed at a location. A UE is an example of a wireless device.

[0029] Communication device - any of various types of computer systems or devices that perform communication, where the communication may be wired or wireless. A communication device may be portable (or mobile), or may be fixed or fixed at a location. A wireless device is one example of a communication device. A UE is another example of a communication device.

[0030] Base Station—The term “base station” has the full breadth of its ordinary meaning and includes at least a wireless communication station that is installed at a fixed location and used to communicate as part of a wireless telephone system or radio system.

[0031] Processing element (or processor) - refers to various elements or combinations of elements that are capable of performing functions in a device such as a user device or a cellular network device. A processing element may include, for example, a processor and associated memory, portions or circuits of individual processor cores, entire processor cores, separate processors, processor arrays, circuits such as ASICs (application specific integrated circuits), programmable hardware elements such as field programmable gate arrays (FPGAs), and any of the above combinations.

[0032] Channel - a medium used to transmit information from a sender (transmitter) to a receiver. It should be noted that since the characteristics of the term "channel" may vary according to different wireless protocols, the term "channel" used herein may be considered to be used in a manner that conforms to the standards of the type of device to which the term is used. In some standards, the channel width may be variable (e.g., depending on device capabilities, frequency band conditions, etc.). For example, LTE may support scalable channel bandwidths of 1.4 MHz to 20 MHz. In contrast, a WLAN channel may be 22 MHz wide, while a Bluetooth channel may be 1 MHz wide. Other protocols and standards may include different definitions of channels. In addition, some standards may define and use multiple types of channels, such as different channels for uplink or downlink and / or different channels for different purposes such as data, control information, etc.

[0033] Frequency band—The term “frequency band” has the full breadth of its ordinary meaning and includes at least a segment of the spectrum (eg, radio frequency spectrum) in which channels are used or set aside for the same purpose.

[0034] Automatic—refers to an action or operation performed by a computer system (e.g., software executed by a computer system) or a device (e.g., a circuit, a programmable hardware element, an ASIC, etc.) without the need for user input to directly specify or perform the action or operation. Thus, the term "automatic" is in contrast to a user manually performing or specifying an action, where the user provides input to directly perform the action. An automatic process may be initiated by input provided by a user, but subsequent actions performed "automatically" are not specified by the user, i.e., are not performed "manually," where the user specifies each action to be performed. For example, a user filling out an electronic form by selecting each field and providing input specifying information (e.g., by typing in information, selecting check boxes, radio selections, etc.) is manually filling out the form, even though the computer system must update the form in response to the user action. The form may be automatically filled out by a computer system, where the computer system (e.g., software executed on the computer system) analyzes the fields of the form and fills out the form without any user input specifying the answers to the fields. As indicated above, a user may invoke automatic filling out of a form, but not participate in the actual filling out of the form (e.g., the user does not manually specify the answers to the fields but rather they are automatically completed). This specification provides various examples of operations that are automatically performed in response to actions taken by a user.

[0035] Approximately - refers to a value that is close to a correct or exact value. For example, approximately can refer to a value that is within 1% to 10% of an exact (or desired) value. However, it should be noted that the actual threshold value (or tolerance) may depend on the application. For example, in some embodiments, "approximately" can mean within 0.1% of some specified value or desired value, while in various other embodiments, the threshold value may be, for example, 2%, 3%, 5%, etc., depending on the expectations or requirements of a particular application.

[0036] Concurrency - refers to parallel execution or implementation, where tasks, processes, or programs are executed in an at least partially overlapping manner. For example, concurrency can be achieved using "strong" or strict parallelism, where tasks are executed (at least partially) in parallel on respective computing elements, or using "weak parallelism", where tasks are executed in an interleaved manner (e.g., by time multiplexing of execution threads).

[0037] Configured to - Various components may be described as being "configured to" perform one or more tasks. In such environments, "configured to" is a broad statement that generally means "having a structure" that performs one or more tasks during operation. Thus, the component can be configured to perform the task even when the component is not currently performing the task (e.g., a set of electrical conductors can be configured to electrically connect a module to another module even when the two modules are not connected). In some environments, "configured to" can be a broad statement that generally means "having a circuit" that performs one or more tasks during operation. Thus, the component can be configured to perform the task even when the component is not currently turned on. Typically, the circuitry that forms the structure corresponding to "configured to" may include hardware circuitry.

[0038] For ease of description, various components may be described as performing one or more tasks. Such descriptions should be interpreted as including the phrase "configured to". The statement that a component is configured to perform one or more tasks is expressly intended not to invoke 35 USC § 112 (f) interpretation of that component.

[0039] Figure 1 and Figure 2 —Communications systems

[0040] Figure 1 A simplified exemplary wireless communication system according to some embodiments is shown. Note that Figure 1 The system is only one example of possible systems, and features of the present disclosure may be implemented in any of a variety of systems as desired.

[0041] As shown, the exemplary wireless communication system includes a base station 102A, which communicates with one or more user equipment 106A, user equipment 106B to user equipment 106N, etc. through a transmission medium. Each user equipment in the user equipment may be referred to as a "user device" (UE) in this document. Therefore, user equipment 106 is referred to as a UE or UE device.

[0042] Base station (BS) 102A may be a base transceiver station (BTS) or a cell site (cellular base station) and may include hardware to enable wireless communications with UEs 106A through 106N.

[0043] The communication area (or coverage area) of a base station may be referred to as a "cell". The base station 102A and the UE 106 may be configured to communicate over a transmission medium using any of a variety of radio access technologies (RATs), which are also referred to as wireless communication technologies or telecommunication standards, such as GSM, UMTS (associated with, for example, WCDMA or TD-SCDMA air interfaces), LTE, Advanced LTE (LTE-A), 5G New Radio (5G NR), HSPA, 3GPP2CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD), and the like. Note that if the base station 102A is implemented in the context of LTE, it may alternatively be referred to as an "eNodeB" or "eNB". Note that if the base station 102A is implemented in the context of 5G NR, it may alternatively be referred to as a "gNodeB" or "gNB".

[0044] As shown, base station 102A may also be configured to communicate with network 100 (e.g., a cellular service provider's core network, a telecommunications network such as a public switched telephone network (PSTN), and / or the Internet, among other possibilities). Thus, base station 102A may facilitate communications between user devices and / or between user devices and network 100. In particular, cellular base station 102A may provide UE 106 with various communication capabilities, such as voice, SMS, and / or data services.

[0045] Base station 102A and other similar base stations (such as base stations 102B...102N) operating according to the same or different cellular communication standards can therefore be provided as a network of cells that can provide continuous or nearly continuous overlapping service to UE 106A-N and similar devices over a geographic area via one or more cellular communication standards.

[0046] Thus, although base station 102A may function as Figure 1 106A-N, but each UE 106 may also be able to receive signals from (and possibly be within communication range of) one or more other cells (which may be provided by base stations 102B-N and / or any other base stations), which may be referred to as "neighboring cells." Such cells may also be able to facilitate communications between user devices and / or between user devices and network 100. Such cells may include "macro" cells, "micro" cells, "pico" cells, and / or cells of any various other granularity of service area size. For example, in Figure 1 The base stations 102A-B shown in FIG. 1 may be macro cells, while the base station 102N may be a micro cell. Other configurations are also possible.

[0047] In some embodiments, base station 102A may be a next generation base station, such as a 5G New Radio (5G NR) base station or "gNB". In some embodiments, the gNB may be connected to a legacy evolved packet core (EPC) network and / or to an NR core (NRC) network. In addition, a gNB cell may include one or more transition and reception points (TRPs). In addition, a UE capable of operating in accordance with 5G NR may be connected to one or more TRPs within one or more gNBs. For example, base station 102A and one or more other base stations 102 may support joint transmissions such that UE 106 may be able to receive transmissions from multiple base stations (and / or multiple TRPs provided by the same base station).

[0048] It should be noted that the UE 106 may be capable of communicating using multiple wireless communication standards. For example, in addition to at least one cellular communication protocol (e.g., GSM, UMTS (associated with, for example, WCDMA or TD-SCDMA air interface), LTE, LTE-A, 5G NR, HSPA, 3GPP2CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD), etc.), the UE 106 may be configured to communicate using wireless networking (e.g., Wi-Fi) and / or peer-to-peer wireless communication protocols (e.g., Bluetooth, Wi-Fi peer-to-peer, etc.). If desired, the UE 106 may also or alternatively be configured to communicate using one or more global navigation satellite systems (GNSS, such as GPS or GLONASS), one or more mobile television broadcast standards (e.g., ATSC-M / H), and / or any other wireless communication protocols. Other combinations of wireless communication standards (including more than two wireless communication standards) are also possible.

[0049] Figure 2 A user device 106 (e.g., one of devices 106A-106N) is shown in communication with base station 102 according to some embodiments. UE 106 may be a device with cellular communication capabilities, such as a mobile phone, handheld device, computer, laptop, tablet, smart watch or other wearable device, or indeed any type of wireless device.

[0050] UE 106 may include a processor (processing element) configured to execute process instructions stored in a memory. UE 106 may perform any of the method implementations described herein by executing such stored instructions. Alternatively or in addition, UE 106 may include a programmable hardware element, such as an FPGA (field programmable gate array), an integrated circuit, and / or any of various other possible hardware components configured to perform (e.g., individually or in combination) any of the method implementations described herein or any part of any of the method implementations described herein.

[0051] UE 106 may include one or more antennas for communicating using one or more wireless communication protocols or technologies. In some embodiments, UE 106 may be configured to communicate using, for example, NR or LTE using at least some shared radio components. As an additional possibility, the UE 106 may be configured to communicate using CDMA2000 (1xRTT / 1xEV-DO / HRPD / eHRPD) or LTE using a single shared radio component and / or GSM or LTE using a single shared radio component. The shared radio component may be coupled to a single antenna, or may be coupled to multiple antennas (e.g., for MIMO) for performing wireless communications. Typically, the radio component may include any combination of a baseband processor, an analog RF signal processing circuit (e.g., including filters, mixers, oscillators, amplifiers, etc.) or a digital processing circuit (e.g., for digital modulation and other digital processing). Similarly, the radio component may use the aforementioned hardware to implement one or more receive chains and transmit chains. For example, UE 106 may share one or more portions of a receive chain and / or transmit chain between multiple wireless communication technologies such as those discussed above.

[0052] In some embodiments, the UE 106 may include a separate transmit chain and / or receive chain (e.g., including separate antennas and other radio components) for each wireless communication protocol with which it is configured to communicate. As another possibility, the UE 106 may include one or more radio components shared between multiple wireless communication protocols, and one or more radio components used uniquely by a single wireless communication protocol. For example, the UE 106 may include a shared radio component for communicating using either LTE or 5GNR (or, in various possibilities, either LTE or 1xRTT, or either LTE or GSM), and an independent radio component for communicating using each of Wi-Fi and Bluetooth. Other configurations are also possible.

[0053] Figure 3 —UE block diagram

[0054] Figure 3 An example simplified block diagram of a communication device 106 according to some embodiments is shown. Note that Figure 3The block diagram of the communication device is only an example of a possible communication device. According to the embodiment, in addition to other devices, the communication device 106 can be a user device (UE) device, a mobile device or a mobile station, a wireless device or a wireless station, a desktop computer or a computing device, a mobile computing device (e.g., a laptop computer, a notebook or a portable computing device), a tablet computer and / or a combination of devices. As shown in the figure, the communication device 106 may include a group of components 300 configured to perform core functions. For example, the group of components may be implemented as a system on a chip (SOC), which may include parts for various purposes. Alternatively, the group of components 300 may be implemented as a separate component or a group of components for various purposes. This group of components 300 may be (e.g., communicatively; directly or indirectly) coupled to various other circuits of the communication device 106.

[0055] For example, the communication device 106 may include various types of memory (e.g., including NAND flash memory 310), input / output interfaces such as connector I / F 320 (e.g., for connecting to a computer system; a docking station; a charging station; input devices such as microphones, cameras, keyboards; output devices such as speakers; etc.), a display 360 that may be integrated with the communication device 106 or external to it, and wireless communication circuits 330 (e.g., for LTE, LTE-A, NR, UMTS, GSM, CDMA2000, Bluetooth, Wi-Fi, NFC, GPS, etc.). In some embodiments, the communication device 106 may include wired communication circuits (not shown), such as, for example, a network interface card for Ethernet.

[0056] Wireless communication circuitry 330 may be (e.g., communicatively; directly or indirectly) coupled to one or more antennas, such as one or more antennas 335 as shown. Wireless communication circuitry 330 may include cellular communication circuitry and / or short- to medium-range wireless communication circuitry, and may include multiple receive chains and / or multiple transmit chains for receiving and / or transmitting multiple spatial streams, such as in a multiple-input multiple-output (MIMO) configuration.

[0057] In some embodiments, as further described below, the cellular communication circuit 330 may include one or more receive chains (including and / or coupled to (e.g., communicatively; directly or indirectly) dedicated processors and / or radio components) for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G NR). In addition, in some embodiments, the cellular communication circuit 330 may include a single transmit chain that can switch between radio components dedicated to specific RATs. For example, a first radio component may be dedicated to a first RAT (e.g., LTE) and may communicate with a dedicated receive chain and a transmit chain shared with a second radio component. A second radio component may be dedicated to a second RAT (e.g., 5G NR) and may communicate with a dedicated receive chain and a shared transmit chain.

[0058] The communication device 106 may also include and / or be configured for use with one or more user interface elements. The user interface elements may include various elements such as a display 360 (which may be a touch screen display), a keyboard (which may be a separate keyboard or may be implemented as part of a touch screen display), a mouse, a microphone and / or speakers, one or more cameras, one or more buttons, and / or any of a variety of other elements capable of providing information to a user and / or receiving or interpreting user input.

[0059] The communication device 106 may also include one or more smart cards 345 having SIM (Subscriber Identity Module) functionality, such as one or more UICC cards (one or more Universal Integrated Circuit Cards) 345 .

[0060] As shown, the SOC 300 may include a processor 302 that may execute program instructions for the communication device 106 and a display circuit 304 that may perform graphics processing and provide display signals to a display 360. The one or more processors 302 may also be coupled to a memory management unit (MMU) 340 (which may be configured to receive addresses from the one or more processors 302 and convert those addresses to locations in a memory (e.g., memory 306, read-only memory (ROM) 350, NAND flash memory 310)), and / or to other circuits or devices (such as display circuit 304, wireless communication circuit 330, connector I / F 320, and / or display 360). The MMU 340 may be configured to perform memory protection and page table translation or setup. In some embodiments, the MMU 340 may be included as part of the one or more processors 302.

[0061] As described above, the communication device 106 may be configured to communicate using wireless and / or wired communication circuits. As described herein, the communication device 106 may include hardware and software components for implementing any of the various features and techniques described herein. For example, by executing program instructions stored on a memory medium (e.g., a non-transient computer-readable memory medium), the processor 302 of the communication device 106 may be configured to implement part or all of the features described herein. Alternatively (or in addition thereto), the processor 302 may be configured as a programmable hardware element, such as an FPGA (field programmable gate array), or as an ASIC (application-specific integrated circuit). Alternatively (or in addition thereto), in combination with one or more components in other components 300, 304, 306, 310, 320, 330, 340, 345, 350, 360, the processor 302 of the communication device 106 may be configured to implement part or all of the features described herein.

[0062] Furthermore, as described herein, processor 302 may include one or more processing elements. Thus, processor 302 may include one or more integrated circuits (ICs) configured to perform the functions of processor 302. Furthermore, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of one or more processors 302.

[0063] In addition, as described herein, wireless communication circuit 330 may include one or more processing elements. In other words, one or more processing elements may be included in wireless communication circuit 330. Therefore, wireless communication circuit 330 may include one or more integrated circuits (ICs) configured to perform the functions of wireless communication circuit 330. In addition, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of wireless communication circuit 330.

[0064] Figure 4 —Block diagram of a base station

[0065] Figure 4 An exemplary block diagram of a base station 102 according to some embodiments is shown. Note that Figure 4 The base station of is only one example of a possible base station. As shown, the base station 102 may include one or more processors 404 that may execute program instructions for the base station 102. The one or more processors 404 may also be coupled to a memory management unit (MMU) 440 (which may be configured to receive addresses from the one or more processors 404 and convert these addresses to locations in memory (e.g., memory 460 and read-only memory (ROM) 450)) or to other circuits or devices.

[0066] Base station 102 may include at least one network port 470. Network port 470 may be configured to couple to a telephone network and provide access to the telephone network described above. Figure 1 and Figure 2 Multiple devices of the telephone network described in, such as UE device 106.

[0067] The network port 470 (or an additional network port) may be further configured or alternatively configured to couple to a cellular network, such as a core network of a cellular service provider. The core network may provide mobility-related services and / or other services to multiple devices, such as the UE device 106. In some cases, the network port 470 may be coupled to a telephone network via the core network, and / or the core network may provide a telephone network (e.g., in other UE devices served by the cellular service provider).

[0068] In some embodiments, base station 102 may be a next generation base station, e.g., a 5G New Radio (5G NR) base station or "gNB". In such embodiments, base station 102 may be connected to a legacy Evolved Packet Core (EPC) network and / or to an NR Core (NRC) network. Furthermore, base station 102 may be considered a 5G NR cell and may include one or more transition and reception points (TRPs). Furthermore, a UE capable of operating in accordance with 5G NR may be connected to one or more TRPs within one or more gNBs.

[0069] The base station 102 may include at least one antenna 434 and possibly multiple antennas. At least one antenna 434 may be configured to function as a wireless transceiver and may be further configured to communicate with the UE device 106 via the radio component 430. The antenna 434 communicates with the radio component 430 via a communication chain 432. The communication chain 432 may be a receive chain, a transmit chain, or both. The radio component 430 may be configured to communicate via various wireless communication standards, including but not limited to 5G NR, LTE, LTE-A, GSM, UMTS, CDMA2000, Wi-Fi, and the like.

[0070] Base station 102 may be configured to perform wireless communications using multiple wireless communication standards. In some cases, base station 102 may include multiple radio components that enable base station 102 to communicate according to multiple wireless communication technologies. For example, as one possibility, base station 102 may include an LTE radio component for performing communications according to LTE and a 5G NR radio component for performing communications according to 5G NR. In this case, base station 102 may be able to operate as both an LTE base station and a 5G NR base station. As another possibility, base station 102 may include a multimode radio component that can perform communications according to any one of multiple wireless communication technologies (e.g., 5G NR and LTE, 5G NR and Wi-Fi, LTE and Wi-Fi, LTE and UMTS, LTE and CDMA2000, UMTS and GSM, etc.).

[0071] As further described later herein, BS 102 may include hardware and software components for implementing or supporting implementations of the features described herein. The processor 404 of base station 102 may be configured to implement or support implementations of part or all of the methods described herein, for example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively, processor 404 may be configured as a programmable hardware element such as an FPGA (field programmable gate array), or as an ASIC (application-specific integrated circuit) or a combination thereof. Alternatively (or in addition), in combination with one or more of other components 430, 432, 434, 440, 450, 460, 470, the processor 404 of BS 102 may be configured to implement or support implementations of part or all of the features described herein.

[0072] Furthermore, as described herein, the one or more processors 404 may include one or more processing elements. Thus, the one or more processors 404 may include one or more integrated circuits (ICs) configured to perform the functions of the one or more processors 404. Furthermore, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the one or more processors 404.

[0073] Additionally, as described herein, radio 430 may include one or more processing elements. Thus, radio 430 may include one or more integrated circuits (ICs) configured to perform the functions of radio 430. Additionally, each integrated circuit may include circuits (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of radio 430.

[0074] Figure 5 —Block diagram of cellular communication circuit

[0075] Figure 5 An example simplified block diagram of a cellular communication circuit according to some embodiments is shown. Note that Figure 5 The block diagram of the cellular communication circuitry of is only one example of one possible cellular communication circuitry; other circuits, such as circuitry that includes or is coupled to sufficient antennas for different RATs to perform uplink activities using separate antennas, or circuitry that includes or is coupled to fewer antennas, such as circuitry that can be shared between multiple RATs, are also possible. According to some embodiments, the cellular communication circuitry 330 may be included in a communication device such as the communication device 106 described above. As described above, the communication device 106 may be a user equipment (UE) device, a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, notebook, or portable computing device), a tablet computer, and / or a combination of devices, among other devices.

[0076] Cellular communication circuitry 330 may be (e.g., communicatively; directly or indirectly) coupled to one or more antennas, such as antennas 335a-b and 336 as shown. In some embodiments, cellular communication circuitry 330 may include dedicated receive chains (including and / or coupled to (e.g., communicatively; directly or indirectly) dedicated processors and / or radio components) for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G NR). For example, Figure 5 As shown, the cellular communication circuit 330 may include a first modem 510 and a second modem 520. The first modem 510 may be configured for communication according to a first RAT (e.g., such as LTE or LTE-A), and the second modem 520 may be configured for communication according to a second RAT (e.g., such as 5G NR).

[0077] As shown, the first modem 510 may include one or more processors 512 and a memory 516 in communication with the processor 512. The modem 510 may communicate with a radio frequency (RF) front end 530. The RF front end 530 may include circuits for transmitting and receiving radio signals. For example, the RF front end 530 may include a receiving circuit (RX) 532 and a transmitting circuit (TX) 534. In some embodiments, the receiving circuit 532 may communicate with a downlink (DL) front end 550, which may include circuits for receiving radio signals via an antenna 335a.

[0078] Similarly, the second modem 520 may include one or more processors 522 and a memory 526 in communication with the processor 522. The modem 520 may communicate with the RF front end 540. The RF front end 540 may include circuits for transmitting and receiving radio signals. For example, the RF front end 540 may include a receiving circuit 542 and a transmitting circuit 544. In some embodiments, the receiving circuit 542 may communicate with the DL front end 560, which may include circuits for receiving radio signals via the antenna 335b.

[0079] In some embodiments, the switch 570 may couple the transmit circuit 534 to an uplink (UL) front end 572. In addition, the switch 570 may couple the transmit circuit 544 to the UL front end 572. The UL front end 572 may include circuitry for transmitting radio signals via the antenna 336. Thus, when the cellular communication circuit 330 receives an instruction to transmit according to a first RAT (e.g., via a transmit chain including the transmit circuit 534 and the UL front end 572) supported by the first modem 510, the switch 570 may be switched to a first state that allows the first modem 510 to transmit signals according to the first RAT (e.g., via a transmit chain including the transmit circuit 534 and the UL front end 572). Similarly, when the cellular communication circuit 330 receives an instruction to transmit according to a second RAT (e.g., via a transmit chain including the transmit circuit 544 and the UL front end 572) supported by the second modem 520, the switch 570 may be switched to a second state that allows the second modem 520 to transmit signals according to the second RAT (e.g., via a transmit chain including the transmit circuit 544 and the UL front end 572).

[0080] As described herein, the first modem 510 and / or the second modem 520 may include hardware and software components for implementing any of the various features and techniques described herein. For example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium), the processors 512, 522 may be configured to implement part or all of the features described herein. Alternatively (or in addition), the processors 512, 522 may be configured as programmable hardware elements, such as an FPGA (field programmable gate array) or as an ASIC (application-specific integrated circuit). Alternatively (or in addition), in combination with one or more of the other components 530, 532, 534, 540, 542, 544, 550, 570, 572, 335, and 336, the processors 512, 522 may be configured to implement part or all of the features described herein.

[0081] In addition, as described herein, the processors 512, 522 may include one or more processing elements. Thus, the processors 512, 522 may include one or more integrated circuits (ICs) configured to perform the functions of the processors 512, 522. In addition, each integrated circuit may include circuits (e.g., first circuits, second circuits, etc.) configured to perform the functions of the processors 512, 522.

[0082] In some embodiments, the cellular communication circuit 330 may include only one transmit / receive chain. For example, the cellular communication circuit 330 may not include the modem 520, the RF front end 540, the DL front end 560, and / or the antenna 335b. As another example, the cellular communication circuit 330 may not include the modem 510, the RF front end 530, the DL front end 550, and / or the antenna 335a. In some embodiments, the cellular communication circuit 330 may also not include the switch 570, and the RF front end 530 or the RF front end 540 may communicate with the UL front end 572, for example, directly.

[0083] Figure 6 — Downlink signal reception using antenna panel switching

[0084] New cellular communication technologies are constantly being developed to increase coverage, better meet various needs and use cases, and for a variety of other reasons.

[0085] An increasingly common development includes the use of multiple antenna panels by wireless devices. The panels may be arranged so that different panels may provide beam aiming in different directions, thereby potentially increasing the effective coverage range of the wireless device. However, at least for some wireless devices, it may not be practical for the wireless device to always keep all of its antenna panels activated, for example, due to battery limitations and the power consumption cost of doing so. Therefore, since different antenna panels may provide better performance at different times (e.g., due to movement / rotation of the wireless device), it may be useful to provide techniques for antenna panel switching for a cellular base station to support wireless devices performing downlink signal reception in a wireless communication system.

[0086] Figure 6 is a signal flow diagram illustrating an example of such a method according to at least some embodiments. Figure 6 Various aspects of the method may be implemented by a wireless device such as UE 106 shown in the various figures herein, a base station such as BS 102 shown in the various figures herein, and / or more generally, may be implemented in other devices in combination with any of the computer circuits, systems, devices, elements or components shown in the above figures as needed. For example, a processor (and / or other hardware) of such a device may be configured to cause the device to perform any combination of the method elements shown and / or other method elements.

[0087] In various embodiments, some of the method elements shown may be performed simultaneously in an order different from that shown, may be replaced by other method elements, or may be omitted. Additional elements may also be performed as needed. As shown in the figure, Figure 6 The method can be operated as follows.

[0088] At 602, the wireless device may provide an indication of an antenna panel activation delay applicable to the wireless device to the cellular base station. According to some embodiments, the antenna panel activation delay indication may include a value indicating a minimum length of time (e.g., in symbols, time slots, milliseconds, or any other time unit defined according to the cellular communication system) that the wireless device needs to activate the antenna panel of the wireless device that has not yet been activated. When the wireless device does not need to activate the antenna panel of the wireless device, the indication may also implicitly indicate the minimum length of time requested by the wireless device between scheduling communications and performing communications. For example, certain values ​​(e.g., those above a certain threshold) that may be indicated in the antenna panel activation delay may be implicitly associated with certain (e.g., smaller) values ​​that may be considered as the minimum length of time requested by the wireless device between scheduling communications and performing communications ("scheduling offsets") when the wireless device does not need to activate the antenna panel of the wireless device. Alternatively, when the wireless device does not need to activate the antenna panel of the wireless device, the wireless device may provide an additional indication that explicitly indicates the minimum length of time requested by the wireless device between scheduling communications and performing communications.

[0089] In accordance with some embodiments, the wireless device may additionally provide any of a variety of other types of information to the cellular base station to help support the cellular base station's ability to determine when to use a scheduling offset of at least the length of the antenna panel activation delay indicated by the wireless device. For example, in some embodiments, the wireless device may provide an indication of the number of beam groups for the wireless device and the number of beams in each beam group to the cellular base station. In some cases, the wireless device may also provide an indication of an updated antenna panel activation delay for the wireless device; for example, if all antenna panels of the wireless device are already activated, the wireless device may update its antenna panel activation delay to a lower value, for example, to indicate that the wireless device does not require additional delay for antenna panel activation.

[0090] At 604, the cellular base station may determine a scheduling offset for downlink communications to the wireless device based at least in part on the indicated antenna panel activation delay. For example, the cellular base station may determine whether the wireless device may require additional time to perform antenna panel activation for downlink communications, and if so, select a scheduling offset that is at least the length of the indicated antenna panel activation delay.

[0091] In some embodiments, the manner in which a cellular base station determines whether a wireless device may require additional time to perform antenna panel activation may depend at least in part on the type of downlink communication being scheduled. For example, for aperiodic channel state information reference signal (CSI-RS) transmissions used for beam management (e.g., whose repetitions are configured "on" to facilitate beam sweeping by the wireless device to receive CSI-RS resources), the cellular base station may consider whether the wireless device has multiple beam groups, and how many beams per beam group the wireless device supports. If the wireless device does have multiple beam groups, and if the number of CSI-RS resources scheduled for aperiodic CSI-RS transmissions is higher than the number of beams per beam group supported by the wireless device, the cellular base station may determine that the wireless device may require additional time to perform antenna panel activation to perform downlink communications. In such a scenario, the cellular base station may select at least the value of the antenna panel activation delay as a scheduling offset. In contrast, if the wireless device does not have multiple beam groups, or if the number of CSI-RS resources scheduled for aperiodic CSI-RS transmission is not greater than the number of beams per beam group supported by the wireless device, the cellular base station may determine that the wireless device may not require additional time to perform antenna panel activation to perform downlink communication. In such scenarios, the cellular base station may select a value less than the antenna panel activation delay as the scheduling offset.

[0092] Note that, according to some embodiments, in the case where aperiodic CSI-RS transmissions are used for beam management, the wireless device may be able to use its currently active antenna panel for at least a portion of the transmission, and thus the cellular base station may select a value less than the antenna panel activation delay as the scheduling offset even if the cellular base station determines that the wireless device may require additional time to perform antenna panel activation for downlink communications. As one possibility, in such a scenario, the cellular base station may select the scheduling offset such that at least the antenna panel activation delay passes before the end of the transmission to the wireless device, and more specifically, such that at least the antenna panel activation delay passes for a portion of the downlink transmission for which the wireless device may need to perform antenna panel activation. For example, the cellular base station may select the scheduling offset for such downlink communications such that the minimum delay between scheduling the downlink communication and the (K+1)th resource of the downlink communication is at least the antenna panel activation delay, where K is equal to the number of beams per beam group supported by the wireless device.

[0093] As a further possibility, for an aperiodic channel state information reference signal (CSI-RS) transmission for tracking, an aperiodic CSI-RS transmission for channel state information acquisition, or a physical downlink shared channel (PDSCH) transmission, the cellular base station may consider whether a transmission configuration indicator (TCI) state for the transmission is stale or expired. In such a scenario, if the TCI state for the transmission is stale or expired, the cellular base station may determine that the wireless device may require additional time to perform antenna panel activation for downlink communication, and if the TCI state for the transmission is new or up-to-date, the cellular base station determines that the wireless device is unlikely to require additional time to perform antenna panel activation for downlink communication. Therefore, when the TCI state is determined to be stale or expired, the cellular base station may select a value of at least the antenna panel activation delay as the scheduling offset, and when the TCI state is determined to be new or up-to-date, the cellular base station may select a value less than the antenna panel activation delay as the scheduling offset.

[0094] Whether a TCI state is new / up-to-date or outdated / expired may be determined in any of a variety of ways. As one possibility, a cellular base station may determine that a TCI state is expired / expired if one (or more or all, according to various embodiments) of a particular set of configuration conditions are met. One such possible condition may include if a wireless device does not report a downlink reference signal in a TCI state or a downlink reference signal that is quasi-co-located with a reference signal in a TCI state within a threshold amount of time. Another such possible condition may include if a downlink reference signal in a TCI state is not configured for a control resource set in a TCI state, or is quasi-co-located with a downlink reference signal configured for a control resource set for a wireless device in a TCI state. Another such possible condition may include if a PDSCH transmission with a TCI state is not transmitted to the wireless device within a threshold amount of time. Another such possible condition may include if a periodic CSI-RS or a semi-persistent CSI-RS with a TCI state has not been transmitted to the wireless device within a threshold amount of time. Note that the thresholds for the various possible conditions may be the same or different, as desired. In some cases, one or more thresholds may be predefined (e.g., specified by a cellular communication standard specification document). Alternatively, one or more thresholds may be semi-statically or dynamically configured, for example, based on UE capability reports, RRC signaling, broadcast system information, or in any of a variety of other ways. It is also noted that any or all of a variety of other conditions for determining whether a TCI state is considered outdated or new may be additionally or alternatively configured as desired.

[0095] Note that in some cases, when it is determined that a wireless device may require additional time to perform antenna panel activation for downlink communications, the cellular base station may always select a scheduling offset that is at least equal to the indicated antenna panel activation delay, and may also be permitted to select a scheduling offset that is less than the indicated antenna panel activation delay, and may do so at its discretion or in certain specific circumstances.

[0096] At 606, the cellular base station may schedule the downlink communication using the selected scheduling offset. According to at least some embodiments, this may include providing a physical downlink control channel (PDCCH) communication indicating that the downlink communication is scheduled to be performed at the scheduling offset following the PDCCH communication. After scheduling the transmission to the wireless device, the cellular base station may also perform the scheduled transmission to the wireless device at the scheduling offset.

[0097] The wireless device may perform antenna panel activation to receive communications if needed and if sufficient time is provided by the scheduling offset to do so. If the scheduling offset is insufficient to perform antenna panel activation (e.g., and the wireless device would otherwise activate at least one antenna panel to receive transmissions), the wireless device may apply a default TCI state to receive transmissions. The default TCI state may be determined in any of a variety of ways that may be independently determined by both the wireless device and the cellular base station. For example, as one possibility, when multiple control resource sets are configured, the default TCI state may be considered to be the TCI state of the control resource set with the lowest control resource set ID in the most recent timeslot.

[0098] Therefore, use Figure 6 The method may effectively support antenna panel switching by wireless devices in a wireless communication system. At least according to some embodiments, this may allow the wireless device to effectively utilize multiple antenna panels to improve cellular communication performance without the power consumption cost of always keeping those multiple antenna panels in an activated state.

[0099] Figures 7 to 11 and additional information

[0100] Figures 7 to 11 Shown can be combined if necessary Figure 6 However, it should be noted that in Figures 7 to 11 Shown in and about Figures 7 to 11 The exemplary details described are not intended to limit the disclosure as a whole: many variations and alternatives to the details provided below are possible and should be considered within the scope of the disclosure.

[0101] According to at least some wireless device designs, multiple antenna panels may be utilized, e.g., so that different panels may be aimed in different (e.g., opposite or other) directions, to increase coverage, and / or for various other reasons. However, at least for some wireless devices, it may be impractical to always activate all of the antenna panels of the wireless device, e.g., due to the power consumption cost of such permanent activation. Thus, it may be the case that the wireless device activates different antenna panels at different times, e.g., due to rotation and / or other motion. Figure 7 Aspects of such an example scenario are shown, where a wireless device 106 initially has a first antenna panel activated, then after undergoing a rotation activates a second antenna panel, and finally after further rotation activates the first antenna panel again in order to receive a signal transmitted by the wireless device by a cellular base station 102. Activating antenna panels may require a certain amount of time, and therefore in order to support the operation of wireless devices that may utilize multiple antenna panels but do not maintain all of their antenna panels in an activated state, it may be useful to provide a framework in which the cellular network can account for and provide for potential additional delays that may be required for a wireless device to perform antenna panel activation, while still providing for smaller scheduling delays when antenna panel activation is not required.

[0102] According to at least some embodiments, in some cases, downlink signals between a cellular base station and a wireless device require additional delays for panel activation. For example, in some cases, additional delays for antenna panel activation may be required in conjunction with certain cases of non-periodic channel state information reference signal (CSI-RS) transmissions for tracking, CSI acquisition, and / or beam management. Additionally, in some cases, additional delays for antenna panel activation may be required in conjunction with certain cases of physical downlink shared channel (PDSCH) transmissions. For example, Figure 8 is a timing diagram illustrating scheduling and transmission timing of possible aperiodic CSI-RS transmissions for beam management. As shown, in the illustrated scenario, a wireless device may receive a physical downlink control channel (PDCCH) communication at a scheduling offset T that schedules an aperiodic CSI-RS transmission, followed by an aperiodic CSI-RS transmission after the indicated scheduling offset T. In this example, the PDCCH communication may be received by the wireless device using one antenna panel, while at least a portion of the aperiodic CSI-RS transmission may be received by the wireless device using a different antenna panel. In this scenario, and in various other scenarios, it may be beneficial to provide a framework to increase the likelihood (or possibly guarantee) that a scheduling offset provided by the network will be sufficient to allow the wireless device to perform antenna panel activation when needed.

[0103] As part of such a framework, if antenna panel activation is required, it may be useful for the wireless device to be able to inform the network (e.g., via a serving cellular base station) of the minimum delay required for the wireless device to receive non-periodic CSI-RS and PDSCH communications. As one possibility, a "beamSwitchingTiming" parameter may be defined and reported by the wireless device, for example, when using RRC signaling and / or providing UE capability information in various other ways. If the value of the BeamSwitchingTiming parameter reported by the UE is above a certain threshold (e.g., possible values ​​are 224 or 336 symbols), this may indicate that the minimum scheduling offset used by the network when antenna panel activation is required should be the indicated value (e.g., 224 symbols or 336 symbols). The indication of a value above the specified threshold for the beamSwitchingTiming parameter may also implicitly indicate a minimum scheduling offset value for scenarios when antenna panel activation is not required. (e.g., one of {14, 28, 42} symbols, and various other possibilities) Alternatively, an additional parameter may be defined and explicitly reported to indicate the minimum scheduling offset value for scenarios when antenna panel activation is not required. If the beamSwitchingTiming parameter value reported by the UE is below a specified threshold (e.g., one of {14, 28, 42} symbols, among various other possibilities), the serving cell may assume that the UE does not require any additional delay to activate the antenna panels. Such a scenario may occur, for example, if the UE keeps all of its antenna panels activated, or if the UE has a very short antenna panel activation delay.

[0104] As another part of such a framework, it may be useful to provide a mechanism for the network to determine when UE antenna panel activation may be required, for example, to determine whether to use a minimum scheduling offset that supports antenna panel activation or to use a minimum scheduling offset that is less than sufficient to support antenna panel activation.

[0105] For example, for aperiodic CSI-RS for beam management, the UE may report the number of beam groups supported by the UE (e.g., which may correspond to the number of antenna panels of the UE in at least some cases) and the number of beams per beam group supported by the UE (e.g., which may correspond to the number of beams per antenna panel supported by the UE in at least some cases) to the serving cellular base station. When repetition of aperiodic CSI-RS is configured to be "on", if the number of scheduled CSI-RS resources is greater than the number of beams per beam group supported by the UE, the cellular base station may assume that the wireless device requires additional delay for aperiodic CSI-RS communication in order to account for activation of the antenna panel. Otherwise (e.g., if the number of scheduled CSI-RS resources is not greater than the number of beams per beam group supported by the UE and / or if the UE does not have more than one beam group), the cellular base station may assume that the wireless device does not require additional delay for aperiodic CSI-RS communication in order to account for activation of the antenna panel.

[0106] If it is determined that the wireless device requires additional delay for aperiodic CSI-RS communication to account for activation of an antenna panel, as one possibility, a scheduling offset may be selected such that a minimum scheduling offset between the PDCCH and a first aperiodic CSI-RS resource is higher than a beamSwitchingTiming parameter reported by the wireless device. As another possibility, a scheduling offset may be selected such that a minimum scheduling offset between the PDCCH and a (K+1)th aperiodic CSI-RS resource is higher than a beamSwitchingTiming parameter reported by the wireless device, where K may be equal to the number of beams reported per beam group supported by the wireless device, or may be reported by the wireless device. If it is determined that the wireless device does not require additional delay for aperiodic CSI-RS communication to account for activation of an antenna panel, a scheduling offset may be selected such that a minimum scheduling offset between the PDCCH and a first aperiodic CSI-RS resource is at least equal to a minimum scheduling offset value (e.g., implicitly reported by a beamSwitchingTiming parameter or explicitly reported separately) in scenarios where antenna panel activation is not required.

[0107] Fig. 9is a flow chart illustrating one possible such method for determining a scheduling offset for aperiodic CSI-RS transmission for beam management according to some embodiments. As shown, in 902, upon triggering a CSI transmission to a UE, the cellular base station may determine whether the number of beam groups of the UE is greater than 1, whether the beam switching timing reported by the UE is 224 or 336 symbols, and whether the triggered CSI transmission includes a CSI-RS for UE beam optimization for a number of resources greater than the number of beams per beam group supported by the UE. If all conditions evaluated in step 902 are valid, then in 904, the cellular base station may determine that the UE may require additional time for antenna panel activation, and therefore may select a scheduling offset of at least the beam switching timing value reported by the UE (e.g., 224 or 336 symbols). In the event that not all conditions evaluated in step 902 are valid, in step 906, the cellular base station may determine that the UE may not need additional time for antenna panel activation, and therefore may select a smaller scheduling offset, such as at least a smaller minimum scheduling offset value associated with the beam switching timing value reported by the UE (e.g., 28 or 42 symbols), or a threshold minimum scheduling offset value reported by the UE. Note that although combined with Fig. 9 Certain possible beam switching timing values ​​are indicated, but these values ​​are provided by way of example only, and many other possible beam switching timing values ​​(and / or units of measurement) are possible.

[0108] For non-periodic CSI-RS for tracking, non-periodic CSI-RS for CSI acquisition, and / or PDSCH transmissions, as one possibility, it is possible for the cellular base station to simply assume that the UE does not require additional antenna panel activation delays, in which case the UE can generally track the TCI state configured for such signals from an activated panel. Alternatively, in at least some cases, it may be useful to provide a mechanism for the cellular base station to determine when the UE may benefit from additional scheduling delays to perform UE antenna panel activation. For example, according to some embodiments, a framework may be used in which the cellular base station determines whether the TCI state used to trigger a transmission is considered "expired" and, if the TCI state is expired, provides additional delay for panel activation, or, if the TCI state is non-expired, does not provide additional delay. Fig.10is a flow chart illustrating one possible such method according to some embodiments, the method determining a scheduling offset for an aperiodic CSI-RS transmission for tracking, an aperiodic CSI-RS transmission for CSI acquisition, or a PDSCH transmission. As shown, in 1002, upon triggering a transmission to a UE, the cellular base station can determine whether the number of beam groups for the UE is greater than 1, whether the beam switching timing reported by the UE is 224 or 336 symbols, and whether the TCI used for the transmission is based on an expired reference signal. If all conditions evaluated in step 1002 are valid, then in 1004, the cellular base station can determine that the UE may require additional time for antenna panel activation, and therefore can select a scheduling offset of at least the beam switching timing value reported by the UE (e.g., 224 or 336 symbols). In the event that not all conditions evaluated in step 1002 are valid, in step 1006, the cellular base station may determine that the UE may not need additional time for antenna panel activation, and therefore may select a smaller scheduling offset, such as at least a smaller minimum scheduling offset value associated with the beam switching timing value reported by the UE (e.g., 28 or 42 symbols), or a threshold minimum scheduling offset value reported by the UE. Note that similar to Fig. 9 , despite the combination Fig.10 Certain possible beam switching timing values ​​are indicated, but these values ​​are provided by way of example only, and many other possible beam switching timing values ​​(and / or units of measurement) are possible.

[0109] To determine whether a TCI state is outdated or expired, one or more conditions may be used. As one possible condition, if a downlink reference signal in the TCI state or a downlink reference signal quasi-co-located (QCLed) with a reference signal in the TCI state is not reported in the CSI report within a certain time (e.g., one possibility is a threshold of M time slots or milliseconds), the TCI state may be considered outdated or outdated. Another possible condition is that if the downlink reference signal in the TCI state is in the UE's control resource set (CORESET) or QCLed has a total downlink reference signal in the TCI state for the control resource set for the UE, the TCI state may be considered outdated or outdated. As another possible condition, if a PDSCH transmission with the TCI state has not been transmitted within a certain time (e.g., one possibility is a threshold of M time slots or milliseconds), the TCI state may be considered outdated or outdated. As yet another possible condition, if a periodic CSI-RS or semi-persistent CSI-RS with a TCI state has not been transmitted for a certain time (e.g., one possibility is a threshold of M slots or milliseconds), then the TCI state may be considered expired or outdated. Note that the same or different thresholds may be used for such (or other) conditions, and the thresholds may be predefined, determined at least in part based on UE capability reports, configured via RRC signaling, and / or determined in a variety of other possible ways. According to various embodiments, such conditions may be used alone or in any combination to evaluate whether a TCI state is considered new / up-to-date or outdated / expired.

[0110] As an example, Fig.11Possible transmission timelines according to some embodiments are shown, where such methods for determining a scheduling offset for downlink communications may be used. As shown, in the illustrated scenario, a cellular base station may receive a beam report 1102 from a UE, based on which downlink reference signals may be configured in TCI 3, TCI 4, TCI 5, and TCI 6. The cellular base station may provide a PDCCH transmission 1104 with TCI=5, which may schedule a PDSCH transmission 1106. The PDCCH transmission 1104 may occur within a configured threshold M of receiving a beam report that includes a report of a downlink reference signal for TCI 5, so the cellular base station may determine that the UE may not require additional time for antenna panel activation, and may therefore schedule the PDSCH transmission 1106 with a scheduling offset that is less than the beamSwitchingTiming parameter reported by the UE (e.g., 224 or 336). Later, the cellular base station may provide a PDCCH transmission 1108 with TCI=6, which may schedule a PDSCH transmission 1110. The PDCCH transmission 1108 may not occur within the configured threshold M of the received beam report that includes a report of a downlink reference signal for TCI 6, so the cellular base station can determine that the UE may require additional time for antenna panel activation and can therefore schedule the PDSCH transmission 1106 with a scheduling offset of at least the beamSwitchingTiming parameter reported by the UE (e.g., 224 or 336).

[0111] Note that it may be the case (e.g., in accordance with a cellular communications standard specification document) that when the cellular base station determines that certain conditions exist indicating that UE antenna panel activation is required, the cellular base station always provides a scheduling offset that is at least equal to the beamSwitchingTiming value reported by the UE. However, in some cases, it may be alternatively possible for the cellular base station to also be allowed to provide a scheduling offset that is at least not equal to the beamSwitchingTiming value reported by the UE. In such scenarios, when the provided scheduling offset is below the threshold for antenna panel activation, the UE may apply a default TCI state, which may be determined in any of a variety of ways. As one possibility, the default TCI state may be the TCI state of the CORESET with the lowest CORESET ID in the latest timeslot when multiple CORESETs are configured. Other ways of defining / identifying a default TCI state are also possible.

[0112] In the following, further exemplary embodiments are provided.

[0113] A set of embodiments may include a cellular base station comprising: at least one antenna; at least one radio component coupled to the at least one antenna; and a processor coupled to the at least one radio component; wherein the cellular base station is configured to: receive an indication of an antenna panel activation delay from a wireless device; select a scheduling offset for transmission to the wireless device based at least in part on the antenna panel activation delay; and schedule the transmission to the wireless device using the scheduling offset.

[0114] According to some embodiments, the cellular base station is further configured to: perform the transmission to the wireless device at a scheduling offset after scheduling the transmission to the wireless device.

[0115] According to some embodiments, transmissions to the wireless device include aperiodic channel state information reference signal (CSI-RS) transmissions for beam management, wherein the cellular base station is further configured to: receive an indication of a number of beams for each beam group supported by the wireless device; determine whether the number of scheduled CSI-RS resources for the aperiodic CSI-RS transmission is higher than the number of beams for each beam group supported by the wireless device; and when the number of scheduled CSI-RS resources for the aperiodic CSI-RS transmission is higher than the number of beams for each beam group supported by the wireless device, and when repetition for the scheduled CSI-RS resources is configured to be on, select a value of at least the antenna panel activation delay for the scheduling offset.

[0116] According to some embodiments, the cellular base station is further configured to select a value less than the antenna panel activation delay for the scheduling offset when the number of scheduled CSI-RS resources for non-periodic CSI-RS transmissions is not greater than the number of beams in each beam group supported by the wireless device.

[0117] According to some embodiments, a transmission to a wireless device includes an aperiodic channel state information reference signal (CSI-RS) transmission for beam management, wherein the cellular base station is further configured to: receive an indication of a number of beams for each beam group supported by the wireless device; determine whether the number of scheduled CSI-RS resources for the aperiodic CSI-RS transmission is higher than the number of beams for each beam group supported by the wireless device; and select a scheduling offset such that when the number of scheduled CSI-RS resources for the aperiodic CSI-RS transmission is higher than the number of beams for each beam group supported by the wireless device, at least an antenna panel activation delay occurs before the end of the transmission to the wireless device.

[0118] According to some embodiments, transmissions to a wireless device include a non-periodic channel state information reference signal (CSI-RS) transmission for tracking, a non-periodic CSI-RS transmission for channel state information acquisition, or a physical downlink shared channel (PDSCH) transmission, wherein the cellular base station is further configured to: determine whether a transmission configuration indicator (TCI) state used for the transmission is outdated; and when the TCI state used for the transmission is outdated, select a value of at least an antenna panel activation delay for a scheduling offset.

[0119] According to some embodiments, the cellular base station is further configured to select a value for the scheduling offset that is less than the antenna panel activation delay when the TCI state used for transmission is not outdated.

[0120] According to some embodiments, the cellular base station is further configured to determine that the TCI state for transmission is out-of-date when at least one of the following occurs: the wireless device has not reported a downlink reference signal in the TCI state or a downlink reference signal that is quasi-co-located with a reference signal in the TCI state within a threshold amount of time; a downlink reference signal in the TCI state is not configured for a control resource set in the TCI state, or is quasi-co-located with a downlink reference signal configured for a control resource set for the wireless device in the TCI state; a PDSCH transmission with the TCI state has not been transmitted to the wireless device within a threshold amount of time; or a periodic CSI-RS or semi-persistent CSI-RS with the TCI state has not been transmitted to the wireless device within a threshold amount of time.

[0121] Another set of embodiments may include an apparatus comprising: a processor configured to cause a cellular base station to: receive an indication of an antenna panel activation delay from a wireless device; select a scheduling offset for transmission to the wireless device based at least in part on the antenna panel activation delay; schedule the transmission to the wireless device using the scheduling offset; and after scheduling the transmission to the wireless device, perform the transmission to the wireless device at the scheduling offset.

[0122] According to some embodiments, the processor is further configured to cause the cellular base station to: receive an indication of the number of beams for each beam group supported by the wireless device; determine whether the number of scheduled channel state information reference signal (CSI-RS) resources transmitted is higher than the number of beams for each beam group supported by the wireless device; and further select a scheduling offset based at least in part on whether the number of scheduled CSI-RS resource transmissions is higher than the number of beams for each beam group supported by the wireless device.

[0123] According to some embodiments, the processor is further configured to cause the cellular base station to: determine whether a transmission configuration indicator (TCI) state for the transmission has expired; and further select a scheduling offset based at least in part on whether the TCI state for the transmission has expired.

[0124] According to some embodiments, the processor is further configured to cause the cellular base station to: determine that the TCI state used for transmission has expired when the wireless device does not report a downlink reference signal in the TCI state or a downlink reference signal quasi-co-located with a reference signal in the TCI state within a threshold amount of time.

[0125] According to some embodiments, the processor is further configured to cause the cellular base station to: determine that the TCI state used for transmission has expired when a downlink reference signal in the TCI state is not configured for the control resource set of the wireless device in the TCI state, or is quasi-co-located with a downlink reference signal configured for the control resource set of the wireless device in the TCI state.

[0126] According to some embodiments, the processor is further configured to cause the cellular base station to: determine that the TCI state for a transmission has expired when a PDSCH transmission with the TCI state has not been transmitted to the wireless device within a threshold amount of time.

[0127] According to some embodiments, the processor is further configured to cause the cellular base station to: determine that the TCI state for transmission has expired when a periodic channel state information reference signal (CSI-RS) or a semi-persistent CSI-RS with a TCI state has not been transmitted to the wireless device within a threshold amount of time.

[0128] Another group of embodiments may include a wireless device comprising: at least two antenna panels; at least one radio component coupled to the at least two antenna panels; and a processor coupled to the at least one radio component; wherein the wireless device is configured to: provide an indication of an antenna panel activation delay of the wireless device to a cellular base station; and receive downlink control information for scheduling a transmission from the cellular base station, wherein after receiving the downlink control information, the transmission is scheduled with a delay of at least the antenna panel activation delay of the wireless device.

[0129] According to some embodiments, the wireless device is further configured to, at a later time: provide an indication of an updated antenna panel activation delay for the wireless device.

[0130] According to some embodiments, the transmission includes one of: an aperiodic channel state information reference signal (CSI-RS) transmission for tracking; an aperiodic CSI-RS transmission for CSI acquisition; an aperiodic CSI-RS transmission for beam management; or a physical downlink shared channel (PDSCH) transmission.

[0131] According to some embodiments, the wireless device is further configured to provide an indication of the number of beam groups and the number of beams per group for the wireless device to the cellular base station.

[0132] In accordance with some embodiments, the wireless device is further configured to: receive downlink control information scheduling a transmission from a cellular base station, wherein the transmission is scheduled with a delay less than an antenna panel activation delay of the wireless device after receiving the downlink control information; and apply a default transmission configuration indication (TCI) state when receiving a transmission based at least in part on scheduling the transmission with a delay less than an antenna panel activation delay of the wireless device after receiving the downlink control information.

[0133] Another exemplary embodiment may include a device comprising: an antenna; a radio component coupled to the antenna; and a processing element operably coupled to the radio component, wherein the device is configured to implement any or all of the foregoing examples.

[0134] Yet another exemplary embodiment may include a method, the method comprising: performing, by an apparatus: any or all of the foregoing examples.

[0135] Yet another example embodiment may include a non-transitory computer-accessible storage medium that, when executed at a device, causes the device to implement any or all of any of the foregoing examples.

[0136] Yet another exemplary embodiment may include a computer program including instructions for performing any or all of any of the foregoing examples.

[0137] Yet another exemplary embodiment may include an apparatus including means for performing any or all of the elements of any of the foregoing examples.

[0138] Yet another example embodiment may include an apparatus including a processing element configured to cause a wireless device to perform any or all of the elements of any of the foregoing examples.

[0139] It is understood that the use of personally identifiable information should be subject to privacy policies and practices that are generally recognized to meet or exceed industry or government requirements for maintaining user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of the authorized use should be clearly stated to users.

[0140] The embodiments of the present disclosure may be implemented in any of a variety of forms. For example, some embodiments may be implemented as computer-implemented methods, computer-readable storage media, or computer systems. Other embodiments may be implemented using one or more custom-designed hardware devices such as ASICs. Other embodiments may be implemented using one or more programmable hardware elements such as FPGAs.

[0141] In some embodiments, a non-transitory computer-readable storage medium may be configured such that it stores program instructions and / or data, wherein if the program instructions are executed by a computer system, the computer system is caused to perform a method, such as any one of the method embodiments described herein, or any combination of the method embodiments described herein, or any subset of any method embodiments described herein, or any combination of such subsets.

[0142] In some embodiments, a device (e.g., UE 106 or BS 102) may be configured to include a processor (or a group of processors) and a memory medium, wherein the memory medium stores program instructions, wherein the processor is configured to read and execute the program instructions from the memory medium, wherein the program instructions are executable to implement any of the various method implementations described herein (or any combination of the method implementations described herein, or any subset of any method implementations described herein, or any combination of such subsets). The device may be implemented in any of a variety of forms.

[0143] Although the above embodiments have been described in considerable detail, numerous variations and modifications will become apparent to those skilled in the art once the above disclosure is fully appreciated. It is intended that the following claims be interpreted to encompass all such variations and modifications.

Claims

1. A cellular base station, comprising: at least one antenna; at least one radio component coupled to the at least one antenna; and a processor coupled to the at least one radio; wherein the at least one antenna, the at least one radio component and the processor are configured such that the base station: receiving an indication of a delay from the wireless device; selecting a scheduling offset for transmission to the wireless device, wherein the scheduling offset is an offset between a physical downlink control channel (PDCCH) transmission and an aperiodic channel state information reference signal (A-CSI-RS) transmission triggered by the PDCCH; when the delay is one of 224 or 336 symbols and the A-CSI-RS is configured for repetition, selecting the scheduling offset to be at least the delay for use during antenna panel activation, otherwise selecting the scheduling offset to be a value less than 224 or 336 symbols; transmitting the PDCCH, the PDCCH scheduling the A-CSI-RS transmission at the selected scheduling offset; and The A-CSI-RS is transmitted using the scheduling offset.

2. The cellular base station according to claim 1, wherein the cellular base station is further configured to: receiving an indication of a number of beams of each beam group supported by the wireless device; determining whether the number of scheduled CSI-RS resources for the A-CSI-RS transmission is higher than the number of beams per beam group supported by the wireless device; and When the number of scheduled CSI-RS resources for the A-CSI-RS transmission is higher than the number of beams in each beam group supported by the wireless device, and when repetition for the scheduled CSI-RS resources is configured to be on, a value of at least the delay is selected for the scheduling offset.

3. The cellular base station according to claim 2, wherein the cellular base station is further configured to: When the number of scheduled CSI-RS resources for the A-CSI-RS transmission is not greater than the number of beams per beam group supported by the wireless device, a value less than the delay is selected for the scheduling offset.

4. The cellular base station according to claim 1, wherein the cellular base station is further configured to: receiving an indication of a number of beams of each beam group supported by the wireless device; determining whether the number of scheduled CSI-RS resources for the A-CSI-RS transmission is higher than the number of beams per beam group supported by the wireless device; and The scheduling offset is selected such that when the number of scheduled CSI-RS resources for the A-CSI-RS transmission is higher than the number of beams per beam group supported by the wireless device, at least the delay elapses before the end of the transmission to the wireless device.

5. The cellular base station according to claim 1, wherein the cellular base station is further configured to: determining whether a transmission configuration indicator TCI state for the A-CSI-RS transmission is outdated; When the TCI state for the A-CSI-RS transmission is out of date, a value of at least the delay is selected for the scheduling offset.

6. The cellular base station according to claim 5, wherein the cellular base station is further configured to: When the TCI state for the A-CSI-RS transmission is not outdated, a value smaller than the delay is selected for the scheduling offset.

7. The cellular base station of claim 5, wherein the cellular base station is further configured to determine that the TCI state for a transmission is out-of-date when at least one of: The wireless device does not report a downlink reference signal in the TCI state or a downlink reference signal quasi-co-located with a reference signal in the TCI state for a threshold amount of time; A downlink reference signal in the TCI state is not configured for a control resource set in the TCI state, or the downlink reference signal in the TCI state is not quasi-co-located with a downlink reference signal configured for a control resource set of the wireless device in the TCI state; not transmitting a PDSCH transmission with the TCI state to the wireless device within a threshold amount of time; or A periodic CSI-RS or a semi-persistent CSI-RS having the TCI state is not transmitted to the wireless device for a threshold amount of time.

8. An apparatus comprising: A processor configured to cause the cellular base station to: receiving an indication of a delay from the wireless device; selecting a scheduling offset for transmission to the wireless device, wherein the scheduling offset is an offset between a physical downlink control channel (PDCCH) transmission and an aperiodic channel state information reference signal (A-CSI-RS) transmission triggered by the PDCCH; when the delay is one of 224 or 336 symbols and the A-CSI-RS is configured for repetition, selecting the scheduling offset to be at least the delay for use during antenna panel activation, otherwise selecting the scheduling offset to be a value less than 224 or 336 symbols; transmitting the PDCCH, wherein the PDCCH schedules the A-CSI-RS transmission at the selected scheduling offset; as well as After scheduling the transmission to the wireless device, the A-CSI-RS is transmitted to the wireless device using the scheduling offset.

9. The apparatus of claim 8, wherein the processor is further configured to cause the cellular base station to: receiving an indication of a number of beams of each beam group supported by the wireless device; determining whether the number of scheduled channel state information reference signal (CSI-RS) resources for the transmission is greater than the number of beams per beam group supported by the wireless device; and The scheduling offset is further selected based at least in part on whether the number of scheduled CSI-RS resource transmissions is higher than the number of beams per beam group supported by the wireless device.

10. The apparatus of claim 8, wherein the processor is further configured to cause the cellular base station to: determining whether a transmission configuration indicator (TCI) state for the transmission has expired; and The scheduling offset is further selected based at least in part on whether the TCI state for the transmission has expired.

11. The apparatus of claim 10, wherein the processor is further configured to cause the cellular base station to: The TCI state for the transmission is determined to be expired when the wireless device does not report a downlink reference signal in the TCI state or a downlink reference signal quasi-co-located with a reference signal in the TCI state within a threshold amount of time.

12. The apparatus of claim 10, wherein the processor is further configured to cause the cellular base station to: When a downlink reference signal in the TCI state is not configured for the control resource set of the wireless device in the TCI state, or the downlink reference signal in the TCI state is not quasi-co-located with a downlink reference signal configured for the control resource set of the wireless device in the TCI state, it is determined that the TCI state used for the transmission has expired.

13. The apparatus of claim 10, wherein the processor is further configured to cause the cellular base station to: When a PDSCH transmission with the TCI state is not transmitted to the wireless device within a threshold amount of time, it is determined that the TCI state for the transmission has expired.

14. The apparatus of claim 10, wherein the processor is further configured to cause the cellular base station to: When a periodic channel state information reference signal CSI-RS or a semi-persistent CSI-RS having the TCI state is not transmitted to the wireless device within a threshold amount of time, it is determined that the TCI state for the transmission has expired.

15. A wireless device comprising: at least two antenna panels; at least one radio component coupled to the at least two antenna panels; and a processor coupled to the at least one radio; The wireless device is configured to: reporting an indication of a beam switching delay of the wireless device to a cellular base station, wherein the indication comprises a value; and Receiving a physical downlink control channel PDCCH, wherein the PDCCH schedules aperiodic channel state information reference signal A-CSI-RS transmission at a scheduling offset; When the scheduling offset is at least the value and the A-CSI-RS transmission is configured for repetition, applying the transmission configuration indicator TCI state configured for the A-CSI-RS transmission, otherwise applying a default TCI state, the default TCI state being based on the TCI state of the CORESET with the lowest CORESET identifier ID in the latest time slot when multiple control resource sets CORESET are configured; as well as The A-CSI-RS transmission is received based on the scheduling offset and the applied TCI state.

16. The wireless device of claim 15, wherein the value is one of 224 or 336 symbols.

17. The wireless device of claim 15, wherein the wireless device is further configured to: An indication of a number of beam groups and a number of beams per beam group for the wireless device is provided to the cellular base station.

18. The wireless device of claim 15, wherein the wireless device is further configured to: receiving downlink control information scheduling transmissions from the cellular base station, wherein the transmissions are scheduled with a delay less than the beam switching delay of the wireless device after receiving the downlink control information; and After receiving the downlink control information, applying a default transmission configuration indicates a TCI state when the transmission is received based at least in part on scheduling the transmission with a delay less than the beam switching delay of the wireless device.

19. A method performed by a cellular base station, comprising: receiving an indication of a delay from the wireless device; selecting a scheduling offset for transmission to the wireless device, wherein the scheduling offset is an offset between a physical downlink control channel (PDCCH) transmission and an aperiodic channel state information reference signal (A-CSI-RS) transmission triggered by the PDCCH; when the delay is one of 224 or 336 symbols and the A-CSI-RS is configured for repetition, selecting the scheduling offset to be at least the delay for use during antenna panel activation, otherwise selecting the scheduling offset to be a value less than 224 or 336 symbols; transmitting the PDCCH, the PDCCH scheduling the A-CSI-RS transmission at the selected scheduling offset; and The A-CSI-RS is transmitted using the scheduling offset.

20. The method according to claim 19, further comprising: After scheduling the transmission to the wireless device, the transmission to the wireless device is performed with the scheduling offset.

21. The method according to claim 19, wherein the method further comprises: receiving an indication of a number of beams of each beam group supported by the wireless device; determining whether the number of scheduled CSI-RS resources for the A-CSI-RS transmission is higher than the number of beams per beam group supported by the wireless device; and When the number of scheduled CSI-RS resources for the A-CSI-RS transmission is higher than the number of beams in each beam group supported by the wireless device, and when repetition for the scheduled CSI-RS resources is configured to be on, a value of at least the delay is selected for the scheduling offset.

22. The method according to claim 21, further comprising: When the number of scheduled CSI-RS resources for the A-CSI-RS transmission is not greater than the number of beams per beam group supported by the wireless device, a value less than the delay is selected for the scheduling offset.

23. The method of claim 19, wherein the method further comprises: receiving an indication of a number of beams of each beam group supported by the wireless device; determining whether a number of CSI-RS resources scheduled for the A-CSI-RS transmission is greater than a number of beams per beam group supported by the wireless device; as well as The scheduling offset is selected such that when the number of scheduled CSI-RS resources for the A-CSI-RS transmission is higher than the number of beams per beam group supported by the wireless device, at least the delay elapses before the end of the transmission to the wireless device.

24. The method of claim 19, wherein the method further comprises: determining whether a transmission configuration indicator (TCI) state for the transmission is outdated; When the TCI state for the transmission is out of date, a value of at least the delay is selected for the scheduling offset.

25. The method according to claim 24, further comprising: When the TCI state for the transmission is not outdated, a value less than the delay is selected for the scheduling offset.

26. The method of claim 24, further comprising determining that the TCI state for the transmission is outdated when at least one of: The wireless device does not report a downlink reference signal in the TCI state or a downlink reference signal quasi-co-located with a reference signal in the TCI state for a threshold amount of time; A downlink reference signal in the TCI state is not configured for a control resource set in the TCI state, or the downlink reference signal in the TCI state is not quasi-co-located with a downlink reference signal configured for a control resource set of the wireless device in the TCI state; not transmitting a PDSCH transmission with the TCI state to the wireless device within a threshold amount of time; or A periodic CSI-RS or a semi-persistent CSI-RS having the TCI state is not transmitted to the wireless device for a threshold amount of time.

27. A computer readable medium storing instructions which, when executed by a processor, cause a cellular base station to perform the method according to any one of claims 19-26.

28. A computer program product comprising instructions which, when executed by a processor, cause a cellular base station to perform the method according to any one of claims 19 to 26.

29. A method performed by a wireless device, the wireless device comprising at least two antenna panels and at least one radio component coupled to the at least two antenna panels, the method comprising: reporting an indication of a beam switching delay of the wireless device to a cellular base station, wherein the indication comprises a value; as well as Receiving a physical downlink control channel PDCCH, wherein the PDCCH schedules aperiodic channel state information reference signal A-CSI-RS transmission at a scheduling offset; When the scheduling offset is at least the value and the A-CSI-RS transmission is configured for repetition, applying the transmission configuration indicator TCI state configured for the A-CSI-RS transmission, otherwise applying a default TCI state, the default TCI state being based on the TCI state of the CORESET with the lowest CORESET identifier ID in the latest time slot when multiple control resource sets CORESET are configured; as well as The A-CSI-RS transmission is received based on the scheduling offset and the applied TCI state.

30. The method of claim 29, further comprising: An indication of an updated antenna panel activation delay for the wireless device is provided at a later time.

31. The method according to claim 29, Wherein the value is one of 224 or 336 symbols.

32. The method of claim 29, further comprising: An indication of a number of beam groups and a number of beams per beam group for the wireless device is provided to the cellular base station.

33. The method of claim 29, further comprising: receiving downlink control information scheduling a transmission from the cellular base station, wherein the transmission is scheduled with a delay less than the beam switching delay of the wireless device after receiving the downlink control information; as well as After receiving the downlink control information, applying a default transmission configuration indicates a TCI state when the transmission is received based at least in part on scheduling the transmission with a delay less than the beam switching delay of the wireless device.

34. A computer-readable medium storing instructions which, when executed by a processor, cause a wireless device to perform the method according to any one of claims 29-33, the wireless device comprising at least two antenna panels and at least one radio component coupled to the at least two antenna panels.

35. A computer program product comprising instructions which, when executed by a processor, cause a wireless device to perform the method according to any one of claims 29-33, the wireless device comprising at least two antenna panels and at least one radio component coupled to the at least two antenna panels.

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