Apparatus, method, and storage medium for beam failure detection

Abstract

This document provides embodiments of apparatus, systems, and methods for performing beam fault detection in a user equipment (UE). The UE can establish communication with a base station. The UE can determine one or more beams to perform downlink communication from the base station. The UE can receive an indication of a first type of downlink reference signal from the base station to perform beam fault detection. The UE can use the first type of downlink reference signal to perform signal quality measurements on the one or more beams. The UE can determine a beam fault in at least one of the one or more beams based on the performed signal quality measurements.

Description

Technical Field

[0001] This application relates to wireless devices, and more specifically to apparatus, systems and methods for acquiring information from on-demand systems. Background Technology

[0002] The use of wireless communication systems is growing rapidly. Wireless devices, especially wireless user equipment (UEs), have become widespread. Furthermore, various applications (or apps) are hosted on user equipment that performs or relies on wireless communication, such as those providing messaging, email, browsing, video streaming, short videos, voice streaming, real-time gaming, or a variety of other online services.

[0003] Increased reliability in these communication systems is desirable. Summary of the Invention

[0004] This document provides embodiments of apparatus, systems, and methods for performing beam fault detection in a user equipment (UE). The UE can establish communication with a base station. The UE can determine one or more beams to perform downlink communication from the base station. The UE can receive an indication of a first type of downlink reference signal from the base station to perform beam fault detection. The UE can use the first type of downlink reference signal to perform signal quality measurements on one or more beams. The UE can determine a beam fault in at least one of the one or more beams based on the performed signal quality measurements.

[0005] In some embodiments, the non-transitory memory medium may include program instructions executable by the UE, which, when executed, cause the UE to perform at least some or all of the aforementioned operations. In some embodiments, the method performed by the UE may include the UE performing the aforementioned operations. In some embodiments, the method performed by the base station or network element may include the base station or network element performing the corresponding operations.

[0006] The present invention is intended to provide a brief overview of some of the subjects described in this document. Therefore, it should be understood that the above features are merely illustrative and should not be construed as narrowing the scope or substance of the subjects described herein in any way. Other features, aspects, and advantages of the subjects described herein will become apparent from the following detailed description, drawings, and claims. Attached Figure Description

[0007] A better understanding of the embodiments disclosed herein can be obtained by considering the following detailed description in conjunction with the accompanying drawings, wherein:

[0008] Figure 1 An exemplary wireless communication system according to some implementation schemes is shown;

[0009] Figure 2This illustrates a base station (BS) communicating with a user equipment (UE) device according to some implementation schemes;

[0010] Figure 3 An exemplary block diagram of a UE according to some implementation schemes is shown;

[0011] Figure 4 An exemplary block diagram of a BS according to some implementation schemes is shown;

[0012] Figure 5 An exemplary block diagram of a cellular communication circuit according to some embodiments is shown;

[0013] Figure 6 and Figure 7 Examples of 5G NR base stations (gNBs) according to some implementation schemes are shown;

[0014] Figure 8 An exemplary wireless network communicating with a UE is shown according to some implementation schemes;

[0015] Figures 9 to 13 This is a flowchart illustrating an exemplary method for beam fault detection according to some embodiments; and

[0016] Figure 14 This is a timing diagram illustrating an example implementation of beam fault detection using a counter, according to some implementation schemes.

[0017] Although the invention is susceptible to various modifications and alternatives, specific embodiments thereof are shown by way of example in the accompanying drawings and described in detail herein. However, it should be understood that the drawings and the detailed description thereof are not intended to limit the invention to the specific forms disclosed, but rather are intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims. Detailed Implementation

[0018] acronym

[0019] The following acronyms are used in this patent application:

[0020] UE: User Equipment

[0021] BS: Base Station

[0022] ENB: eNodeB (base station)

[0023] LTE: Long Term Evolution

[0024] UMTS: Universal Mobile Telecommunications System

[0025] RAT: Radio Access Technology

[0026] RAN: Radio Access Network

[0027] E-UTRAN: Evolved UMTS Terrestrial RAN

[0028] CN: Core Network

[0029] EPC: Evolved Packet Core

[0030] MME: Mobility Management Entity

[0031] HSS: Home Subscriber Server

[0032] SGW: Service Gateway

[0033] PS: Group swap

[0034] CS: Circuit Switching

[0035] EPS: Evolved Packet Switching System

[0036] RRC: Radio Resource Control

[0037] IE: Information Elements

[0038] QoS: Quality of Service

[0039] QoE: Quality of Experience

[0040] TFT: Service Flow Template

[0041] RSVP: Resource Reservation Protocol

[0042] API: Application Programming Interface

[0043] the term

[0044] The following is a glossary of terms used in this patent application:

[0045] Memory media—any device of any type of memory device or storage device. The term "memory media" is intended to include mounting media such as CD-ROMs, floppy disks, or magnetic 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, such as hard disk drives or optical storage devices; registers, or other similar types of memory elements. Memory media may also include other types of memory or combinations thereof. Furthermore, memory media may be located in a first computer executing a program, or may be located in a different second computer connected to the first computer via a network such as the Internet. In the latter case, the second computer may provide program instructions for execution to the first computer. The term "memory media" may include two or more memory media that may reside in different locations, such as different computers connected via a network.

[0046] Computer system—any of all types of computing or processing systems, including personal computer systems (PCs), mainframe computer systems, workstations, networked appliances, internet-connected appliances, personal digital assistants (PDAs), television systems, grid computing systems, or other devices or combinations thereof. 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.

[0047] User equipment (UE) (or “UE device”) — any of various types of computer systems or devices that are mobile or portable and perform wireless communication. Examples of UE devices include mobile phones or smartphones (e.g., iPhone). TM Based on Android TM Telephones), tablet computers (e.g., iPads) TM Samsung Galaxy TM ), portable gaming devices (e.g., Nintendo DS) TM PlayStation Portable TM Gameboy Advance TM iPhone TMThis includes wearable devices (e.g., smartwatches, smart glasses), laptops, PDAs, portable internet devices, music players, data storage devices, other handheld devices, automobiles and / or motor vehicles, unmanned aerial vehicles (UAVs) (e.g., drones), UAV controllers (UACs), etc. Generally speaking, the term "UE" or "UE device" can be broadly defined to encompass any electronic device, computing device, and / or telecommunications device (or a combination of these devices) that is easily transportable by the user and capable of wireless communication.

[0048] A processing element is a component or combination of components capable of performing the functions of a device such as a user equipment or cellular network device. A processing element may include, for example: a processor and associated memory, portions or circuitry of individual processor cores, an entire processor core, a processor array, circuitry such as an ASIC (Application-Specific Integrated Circuit), programmable hardware components such as a Field-Programmable Gate Array (FPGA), and any combination thereof.

[0049] Figure 1 and Figure 2 —Communication System

[0050] Figure 1 A simplified exemplary wireless communication system according to some implementation schemes is shown. It should be noted that... Figure 1 The system described herein is merely one example of a possible system, and the features of this disclosure can be implemented in any of a variety of systems as needed.

[0051] As shown in the figure, the exemplary wireless communication system includes a base station 102, which communicates with one or more user equipments 106A, 106B, etc., to user equipment 106N via a transmission medium. Each user equipment may be referred to herein as a "user equipment" (UE). Therefore, user equipment 106 is referred to as a UE or UE device.

[0052] Base station (BS) 102 may be a transceiver base station (BTS) or a cell site (“cellular base station”), and may include hardware that enables wireless communication with UE 106A to UE 106N.

[0053] The communication area (or coverage area) of a base station may be referred to as a "cell". Base station 102 and UE 106 can be configured to communicate via a transmission medium using any of a variety of Radio Access Technologies (RATs), also known as wireless communication technologies or telecommunications standards, such as GSM, UMTS (associated with air interfaces such as WCDMA or TD-SCDMA), LTE, LTE-A Advanced, 5G New Radio (5G NR), 6G, HSPA, 3GPP2CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD), etc. Note that if base station 102 is implemented in an LTE environment, its alternative location may be referred to as an "eNodeB" or "eNB". Note that if base station 102 is implemented in a 5G NR environment, its alternative location may be referred to as a "gNodeB" or "gNB".

[0054] As shown in the figure, base station 102 can also be configured to communicate with network 100 (e.g., in various possibilities, the core network of a cellular service provider, telecommunications networks such as the Public Switched Telephone Network (PSTN), and / or the Internet). Therefore, base station 102 can facilitate communication between user equipments and / or between user equipments and network 100. Specifically, cellular base station 102 can provide UE 106 with various telecommunications capabilities such as voice, short message service (SMS), and / or data services.

[0055] Base station 102 and other similar base stations operating according to the same or different cellular communication standards can thus provide a network as a cell, which can provide continuous or near-continuous overlapping services to UE 106A-106N and similar devices over a geographical area via one or more cellular communication standards.

[0056] Therefore, although base station 102 can act as such Figure 1 The diagram shows the "serving cell" of UEs 106A-106N, but each UE 106 may also be able to receive signals (and possibly within their communication range) from one or more other cells (possibly provided by other base stations 102B-102N), which may be referred to as "neighboring cells". Such cells may also facilitate communication between user equipments and / or between user equipments and network 100. These cells may include "macro" cells, "micro" cells, "pecimen" cells, and / or cells of any other granularity providing a service area size. Other configurations are also possible.

[0057] In some implementations, base station 102 may be a next-generation base station, such as a 5G New Radio (5G NR) base station, or "gNB". In some implementations, the gNB may be connected to a legacy evolved packet core (EPC) network and / or to an NR core (NRC) network. Furthermore, the gNB cell may include one or more transition and receive points (TRPs). Additionally, a UE capable of operating according to 5G NR may connect to one or more TRPs within one or more gNBs.

[0058] It should be noted that UE 106 can communicate 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 interfaces), LTE, LTE-A, 5G NR, HSPA, 3GPP2CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD, etc.), UE 106 can 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, UE 106 can also or alternatively be configured to communicate using one or more Global Navigation Satellite Systems (GNSS, e.g., GPS or GLONASS), one or more mobile television broadcasting standards (e.g., Advanced Television Systems Committee—Mobile / Handheld (ATSC-M / H)) and / or any other wireless communication protocol. Other combinations of wireless communication standards (including more than two wireless communication standards) are also possible.

[0059] Figure 2 The illustration shows a user equipment 106 (e.g., one of devices 106A to 106N) communicating with base station 102 according to some embodiments. UE 106 can be a device with cellular communication capabilities, such as a mobile phone, handheld device, computer, or tablet computer, or virtually any type of wireless device.

[0060] UE 106 may include a processor configured to execute program instructions stored in memory. UE 106 may execute any of the method embodiments of the present invention by executing such stored instructions. Alternatively or additionally, UE 106 may include programmable hardware elements, such as a field-programmable gate array (FPGA) configured to execute any of the method embodiments of the present invention or any portion thereof.

[0061] 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, 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 a multiple-input multiple-output or "multiple-input multiple-output" (MIMO) antenna system) for performing wireless communication. Typically, the radio component may include any combination of baseband processor, analog radio frequency (RF) signal processing circuitry (e.g., including filters, mixers, oscillators, amplifiers, etc.) or digital processing circuitry (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 the receive chain and / or transmit chain among various wireless communication technologies such as those discussed above.

[0062] In some implementations, UE 106 may include any number of antennas and may be configured to use the antennas to transmit and / or receive directional radio signals (e.g., beams). Similarly, BS 102 may also include any number of antennas and may be configured to use the antennas to transmit and / or receive directional radio signals (e.g., beams). To receive and / or transmit such directional signals, the antennas of UE 106 and / or BS 102 may be configured to apply different “weights” to different antennas. The process of applying these different weights may be referred to as “precoding”.

[0063] In some implementations, UE 106 may include separate transmit and / or receive chains (e.g., including separate antennas and other radio components) for each wireless communication protocol configured to communicate therewith. As another possibility, UE 106 may include one or more radio components shared among multiple wireless communication protocols, as well as one or more radio components uniquely used by a single wireless communication protocol. For example, UE 106 may include shared radio components for communication using either LTE or 5G NR (or LTE or 1xRTT, or LTE or GSM), and separate radio components for communication using each of Wi-Fi and Bluetooth. Other configurations are also possible.

[0064] Figure 3 —UE block diagram

[0065] Figure 3 An exemplary simplified block diagram of a communication device 106 according to some embodiments is shown. It should be noted that... Figure 3The block diagram of the communication device is merely one example of possible communication devices. According to the implementation, among other devices, 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 computer, notebook computer, or portable computing device), a tablet computer, and / or a combination of devices. As shown, the communication device 106 may include a set of components 300 configured to perform core functions. For example, this set of components may be implemented as a system-on-a-chip (SOC), which may include portions for various purposes. Alternatively, the set of components 300 may be implemented as individual components or groups of components for various purposes. This set of components 300 may be (e.g., communicatively; directly or indirectly) coupled to various other circuitry of the communication device 106.

[0066] For example, 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 connection to a computer system; docking station; charging station; input devices such as microphone, camera, keyboard; output devices such as speaker; etc.), a display 360 that may be integrated with or external to communication device 106, and cellular communication circuitry 330 such as for 5G NR, LTE, GSM, etc., and short- to medium-range wireless communication circuitry 329 (e.g., Bluetooth). TM (and WLAN circuitry). In some embodiments, the communication device 106 may include wired communication circuitry (not shown), such as, for example, a network interface card for Ethernet.

[0067] Cellular communication circuitry 330 may be coupled (e.g., communicatively grounded; directly or indirectly) to one or more antennas, such as antennas 335 and 336 shown. Short-to-medium-range wireless communication circuitry 329 may also be coupled (e.g., communicatively grounded; directly or indirectly) to one or more antennas, such as antennas 337 and 338 shown. Alternatively, short-to-medium-range wireless communication circuitry 329 may be coupled (e.g., communicatively grounded; directly or indirectly) to antennas 337 and 338, or as an alternative, to antennas 335 and 336. Short-to-medium-range wireless communication circuitry 329 and / or cellular communication circuitry 330 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.

[0068] In some embodiments, as further described below, the cellular communication circuit 330 may include a dedicated receive chain for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G NR), which includes and / or (e.g., communicatively, directly or indirectly) coupled to a dedicated processor and / or radio components. Furthermore, in some embodiments, the cellular communication circuit 330 may include a single transmit chain that can be switched between radio components dedicated to a particular RAT. For example, a first radio component may be dedicated to a first RAT, such as LTE, and can communicate with a dedicated receive chain and a transmit chain shared with additional radio components, such as a second radio component that may be dedicated to a second RAT (e.g., 5G NR) and can communicate with a dedicated receive chain and a shared transmit chain.

[0069] The communication device 106 may also include one or more user interface elements and / or be configured to be used with one or more user interface elements. User interface elements may include any of a variety of components 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 the touch screen display), a mouse, a microphone and / or a speaker, one or more cameras, one or more buttons, and / or any of a variety of other components capable of providing information to the user and / or receiving or interpreting user input.

[0070] The communication device 106 may also include one or more smart cards 345 with SIM (Subscriber Identity Module) functionality, such as one or more UICC cards (one or more general purpose integrated circuit cards) 345.

[0071] As shown in the figure, the SOC 300 may include a processor 302 and a display circuit 304. The processor executes program instructions for the communication device 106, and the display circuit performs graphics processing and provides display signals to the display 360. The processor 302 may also be coupled to a memory management unit (MMU) 340 (which may be configured to receive addresses from the processor 302 and translate those addresses into locations in memory (e.g., memory 306, read-only memory (ROM) 350, NAND flash memory 310)) and / or coupled to other circuitry or devices (such as the display circuit 304, short-range wireless communication circuitry 229, cellular communication circuitry 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 processor 302.

[0072] As described above, the communication device 106 can be configured to communicate using wireless and / or wired communication circuitry. The communication device 106 can be configured to transmit a request to attach to a first network node operating under a first RAT, and to transmit an indication that the wireless device is capable of maintaining substantially concurrent connections with the first network node and a second network node operating under a second RAT. The wireless device can also be configured to transmit a request to attach to a second network node. This request may include an indication that the wireless device is capable of maintaining substantially concurrent connections with both the first and second network nodes. Furthermore, the wireless device can be configured to receive an indication that dual connectivity (DC) with both the first and second network nodes has been established.

[0073] As described herein, communication device 106 may include hardware and software components for implementing features that use multiple radio access technologies multiplexed according to the same frequency carrier (e.g., and / or multi-frequency carriers) and various other technologies described herein. For example, by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium), processor 302 of communication device 106 may be configured to implement some or all of the features described herein. Alternatively (or in addition), processor 302 may be configured as a programmable hardware element, such as an FPGA (Field-Programmable Gate Array) or an ASIC (Application-Specific Integrated Circuit). Alternatively (or in addition), in conjunction with one or more of other components 300, 304, 306, 310, 320, 329, 330, 340, 345, 350, 360, processor 302 of communication device 106 may be configured to implement some or all of the features described herein.

[0074] Furthermore, as described in this invention, processor 302 may include one or more processing elements. Therefore, processor 302 may include one or more integrated circuits (ICs) configured to perform the functions of processor 302. Additionally, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of one or more processors 302.

[0075] Furthermore, as described in this invention, the cellular communication circuit 330 and the short-range wireless communication circuit 329 may each include one or more processing elements and / or processors. In other words, one or more processing elements / processors may be included in the cellular communication circuit 330, and similarly, one or more processing elements / processors may be included in the short-range wireless communication circuit 329. Therefore, the cellular communication circuit 330 may include one or more integrated circuits (ICs) configured to perform the functions of the cellular communication circuit 330. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the cellular communication circuit 330. Similarly, the short-range wireless communication circuit 329 may include one or more ICs configured to perform the functions of the short-range wireless communication circuit 329. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the short-range wireless communication circuit 329.

[0076] Figure 4 —Block diagram of a base station

[0077] Figure 4 An exemplary block diagram of a base station 102 according to some embodiments is shown. It should be noted that... Figure 4 The base station shown is merely one example of a possible base station. As illustrated, base station 102 may include a processor 404 capable of executing program instructions specific to base station 102. Processor 404 may also be coupled to a memory management unit (MMU) 440 or other circuitry or device, which may be configured to receive addresses from processor 404 and translate those addresses into locations in memory (e.g., memory 460 and read-only memory (ROM) 450).

[0078] Base station 102 may include at least one network port 470. Network port 470 may be configured to be coupled to a telephone network and provide access rights as described above. Figure 1 and Figure 2 The telephone network described herein includes multiple devices such as UE device 106.

[0079] Network port 470 (or an additional network port) may also be configured, or alternatively configured, to be coupled to a cellular network, such as the core network of a cellular service provider. The core network may provide mobility-related services and / or other services to multiple devices, such as UE device 106. In some cases, network port 470 may be coupled to a telephone network via the core network, and / or the core network may provide the telephone network (e.g., in other UE devices served by the cellular service provider).

[0080] In some implementations, base station 102 may be a next-generation base station, such as a 5G New Radio (5G NR) base station, or a “gNB”. In such implementations, 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 receive points (TRPs). Additionally, UEs capable of operating according to 5G NR may connect to one or more TRPs within one or more gNBs.

[0081] Base station 102 may include at least one antenna 434 and possibly multiple antennas. Radio component 430 and at least one antenna 434 may be configured to function as a wireless transceiver and may be further configured to communicate with UE device 106. Antenna 434 may communicate with radio component 430 via communication link 432. Communication link 432 may be a receive link, a transmit link, or both. 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, etc.

[0082] Base station 102 can be configured to perform wireless communication using multiple wireless communication standards. In some cases, base station 102 may include multiple radios 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 communication according to LTE and a 5G NR radio component for performing communication 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 capable of performing communication according to any of multiple wireless communication technologies (e.g., 5G NR and Wi-Fi, LTE and Wi-Fi, LTE and UMTS, LTE and CDMA2000, UMTS and GSM, etc.).

[0083] As further described herein, BS102 may include hardware and software components for implementing or supporting specific implementations of the features described herein. The processor 404 of base station 102 may be configured to implement or support some 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 a FPGA (Field-Programmable Gate Array), or as an ASIC (Application-Specific Integrated Circuit), or a combination thereof. Alternatively (or in addition), in conjunction with one or more of other components 430, 432, 434, 440, 450, 460, and 470, the processor 404 of base station 102 may be configured to implement or support some or all of the features described herein.

[0084] Furthermore, as described in this invention, one or more processors 404 may include one or more processing elements. Therefore, processor 404 may include one or more integrated circuits (ICs) configured to perform the functions of processor 404. Additionally, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of one or more processors 404.

[0085] Furthermore, as described in this invention, the radio component 430 may include one or more processing elements. Therefore, the radio component 430 may include one or more integrated circuits (ICs) configured to perform the functions of the radio component 430. Additionally, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of the radio component 430.

[0086] Figure 5 —Block diagram of cellular communication circuit

[0087] Figure 5 An exemplary simplified block diagram of a cellular communication circuit according to some embodiments is shown. It should be noted that... Figure 5 The block diagram of the cellular communication circuit is merely one example of possible cellular communication circuits; other circuits, such as those including or coupled to sufficient antennas for different RATs to perform uplink activities using individual antennas, are also possible. According to the implementation, the cellular communication circuit 330 may be included in a communication device such as the communication device 106 described above. As mentioned above, among other devices, 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 computer, notebook computer, or portable computing device), a tablet computer, and / or a combination of these devices.

[0088] Cellular communication circuit 330 may (e.g., communicatively; directly or indirectly) be coupled to one or more antennas, such as ( Figure 3 Antennas 335a-335b and 336 are shown in the diagram. In some embodiments, the cellular communication circuitry 330 may include dedicated receive chains for multiple RATs (e.g., a first receive chain for LTE and a second receive chain for 5G NR), which include and / or (e.g., communicatively grounded, directly or indirectly) coupled to a dedicated processor and / or radio components. For example, as shown... Figure 5 As shown, the cellular communication circuit 330 may include a modem 510 and a modem 520. The modem 510 may be configured for communication according to a first RAT (e.g., such as LTE or LTE-A), and the modem 520 may be configured for communication according to a second RAT (e.g., such as 5G NR).

[0089] As shown, modem 510 may include one or more processors 512 and memory 516 communicating with processors 512. Modem 510 may communicate with radio frequency (RF) front end 530. RF front end 530 may include circuitry for transmitting and receiving radio signals. For example, RF front end 530 may include receiver circuitry (RX) 532 and transmitter circuitry (TX) 534. In some embodiments, receiver circuitry 532 may communicate with downlink (DL) front end 550, which may include circuitry for receiving radio signals via antenna 335a.

[0090] Similarly, modem 520 may include one or more processors 522 and memory 526 communicating with processor 522. Modem 520 may communicate with RF front end 540. RF front end 540 may include circuitry for transmitting and receiving radio signals. For example, RF front end 540 may include receiving circuitry 542 and transmitting circuitry 544. In some embodiments, receiving circuitry 542 may communicate with DL front end 560, which may include circuitry for receiving radio signals via antenna 335b.

[0091] In some implementations, switch 570 may couple transmitting circuitry 534 to uplink (UL) front-end 572. Additionally, switch 570 may couple transmitting circuitry 544 to UL front-end 572. UL front-end 572 may include circuitry for transmitting radio signals via antenna 336. Therefore, when cellular communication circuitry 330 receives an instruction to transmit according to a first RAT (e.g., supported by modem 510), switch 570 may be switched to a first state allowing modem 510 to transmit signals according to the first RAT (e.g., via a transmission chain including transmitting circuitry 534 and UL front-end 572). Similarly, when cellular communication circuitry 330 receives an instruction to transmit according to a second RAT (e.g., supported by modem 520), switch 570 may be switched to a second state allowing modem 520 to transmit signals according to the second RAT (e.g., via a transmission chain including transmitting circuitry 544 and UL front-end 572).

[0092] In some embodiments, the cellular communication circuit 330 may be configured to transmit, when the switch is in a first state, a request to attach to a first network node operating under a first RAT via a first modem, and, when the switch is in the first state, to transmit, via the first modem, an indication that the wireless device is capable of maintaining substantially concurrent connections with the first network node and a second network node operating under a second RAT. The wireless device may also be configured to transmit, when the switch is in a second state, a request to attach to a second network node via a second radio component. This request may include an indication that the wireless device is capable of maintaining substantially concurrent connections with both the first and second network nodes. Furthermore, the wireless device may be configured to receive, via the first radio component, an indication that dual connections with the first and second network nodes have been established.

[0093] As described herein, modem 510 may include hardware and software components for implementing features that utilize multiple radio access technologies multiplexed on the same frequency carrier, as well as various other technologies described herein. For example, processor 512 may be configured to implement some or all of the features described herein by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or otherwise), processor 512 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 otherwise), processor 512 may be configured to implement some or all of the features described herein by combining one or more of other components 530, 532, 534, 550, 570, 572, 335, and 336.

[0094] In some embodiments, processors 512, 522, etc., may be configured to implement or support some 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 storage medium). Alternatively, processors 512, 522, etc., may be configured as programmable hardware elements such as field-programmable gate arrays or as application-specific integrated circuits (ASICs) or combinations thereof. Furthermore, as described in the invention, processors 512, 522, etc., may include one or more processing elements. Therefore, processors 512, 522, etc., may include one or more integrated circuits (ICs) configured to perform the functions of processors 512, 522, etc. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit, a second circuit, etc.) configured to perform the functions of processors 512, 522, etc.

[0095] As described herein, modem 520 may include hardware and software components for implementing features that utilize multiple radio access technologies multiplexed on the same frequency carrier, as well as various other technologies described herein. For example, processor 522 may be configured to implement some or all of the features described herein by executing program instructions stored on a memory medium (e.g., a non-transitory computer-readable memory medium). Alternatively (or otherwise), processor 522 may be configured as a programmable hardware element such as a FPGA (Field-Programmable Gate Array) or as an ASIC (Application-Specific Integrated Circuit). Alternatively (or additionally), processor 522 may be configured to implement some or all of the features described herein by combining one or more of other components 540, 542, 544, 550, 570, 572, 335, and 336.

[0096] Figures 6 to 7 —5G NR architecture

[0097] In some specific implementations, fifth-generation (5G) wireless communication will initially be deployed in parallel with other wireless communication standards, such as LTE. For example, Figure 6 This illustrates a possible standalone (SA) implementation of the next-generation core (NGC) network 606 and 5G NR base stations (e.g., gNB 604), with dual connectivity between LTE and 5G New Radio (5G NR or NR), such as according to... Figure 7 The exemplary non-standalone (NSA) architecture shown has been designated as part of the initial deployment of NR. Therefore, as Figure 7As shown, the Evolved Packet Core (EPC) network 600 can continue to communicate with the current LTE base station (e.g., eNB 602). Furthermore, eNB 602 can communicate with the 5G NR base station (e.g., gNB 604) and can transfer data between the EPC network 600 and gNB 604. In some cases, gNB 604 may also have at least a user plane reference point with the EPC network 600. Therefore, the EPC network 600 can be used (or reused), and gNB 604 can serve as additional capacity for user equipment, for example, to provide increased downlink throughput for the UE. In other words, LTE can be used for control plane signaling, and NR can be used for user plane signaling. Therefore, LTE can be used to establish connections to the network, and NR can be used for data services. It should be understood that many other non-independent architecture variations are possible.

[0098] Figure 8 —Wireless communication system

[0099] Figure 8 A simplified example of a wireless communication system is shown. UE 106 can communicate with a wireless network (e.g., a radio access network (RAN)) that may include one or more base stations (BS) 102 and provide connectivity to a core network (CN) 100 (such as an evolved packet core (EPC)). Base station 102 may be an eNodeB and / or gNB (e.g., a 5G or NR base station) or other types of base stations. UE 106 can communicate wirelessly with base station 102. Base station 102 can then be coupled to core network 100. As shown, CN 100 may include a Mobility Management Entity (MME) 322, a Home Subscriber Server (HSS) 324, and a Serving Gateway (SGW) 326. CN 100 may also include various other devices well known to those skilled in the art.

[0100] The operations described in this document as being performed by a wireless network can be... Figure 8 The operations described herein may be performed by one or more of the network devices shown, such as base station 102 or CN 100, and / or MME 322, HSS 324, or SGW 326 in CN 100, and one or more other possible devices. The operations performed by the radio access network (RAN) described herein may be performed, for example, by base station 102, or by other components of the RAN that can be used to connect the UE and the CN.

[0101] Figure 9 —Beam fault detection and radio link monitoring

[0102] Figure 9 Exemplary techniques for beam fault detection (BFD) and / or radio link monitoring (RLM) are shown. Figure 9 Aspects of the method may be implemented by a wireless device such as UE 106, which communicates with the network via one or more base stations (e.g., BS 102) as shown in the accompanying drawings, or more generally, in conjunction with any of the computer systems or devices shown in the drawings, as well as other circuits, systems, devices, elements or components, and other devices shown in the drawings, as needed. For example, one or more processors (or processing elements) of the UE (e.g., processor 302, baseband processor, processor associated with communication circuitry, etc., and various possibilities) may cause the UE to perform some or all of the method elements shown. For example, one or more processors (or processing elements) of the BS (e.g., processor 404, baseband processor, processor associated with communication circuitry, etc.) may cause the UE to perform some or all of the method elements shown. It should be noted that although at least some elements of the method have been described in a manner involving the use of communication technologies and / or features associated with 3GPP specification documents, this description is not intended to limit the disclosure, and aspects of the method may be used in any suitable wireless communication system as needed. In various implementation schemes, some elements of the method shown may be executed simultaneously in a different order than those shown, may be replaced by other method elements, or may be omitted. Additional method elements may also be executed as needed. As shown in the figure, the method can operate as follows.

[0103] In 902, according to some implementations, the UE (e.g., UE 106) may (e.g., via base station 102) establish communication with the network. For example, the UE may perform an attachment procedure with the base station. In some implementations, the UE may provide capability information to the base station. For example, the UE may indicate various MIMO capabilities, the number of available antennas, the number of available ports, coherence (e.g., incoherent, partially coherent, fully coherent), etc.

[0104] In 904, the UE can determine the uplink and downlink communication configuration for communicating with the network. For example, the UE can receive configuration information from the network, for instance, based on UE capability information. The configuration information can be received in a single message or multiple messages and / or at a single point in time or at multiple different points in time, as needed. In some implementations, at least a portion of the configuration information can be transmitted in Radio Resource Control (RRC) signaling. The configuration information can specify how the UE performs communication with the base station; for example, it can specify uplink and / or downlink configuration information for performing various uplink and / or downlink communications with the base station.

[0105] In some implementations, the UE and the network may negotiate or determine (e.g., collaboratively) one or more beam configurations for performing uplink and / or downlink communication. For example, the base station and / or UE may transmit reference signals (e.g., probe reference signals) in various beams according to known patterns / timings to allow the base station and UE to determine the appropriate beam configuration for performing uplink and / or downlink communication.

[0106] In some implementations, the base station may specify one or more reference signals for performing beam fault detection and / or radio link monitoring. For example, the base station may instruct that reference signals such as a synchronization signal block (SSB) or channel state information reference signal (CSI-RS) should be used by the UE to perform beam fault detection and / or radio link monitoring. In some implementations, these reference signals may be distinguished herein by referring to them as different “types” of reference signals. For example, an SSB may be referred to as a first type of reference signal, and a CSI-RS may be referred to as a second type of reference signal.

[0107] The base station may, for example, explicitly indicate these reference signals (e.g., the type of reference signal) via an RRC signal. However, the base station may not explicitly configure these reference signals for beam fault detection and / or radio link monitoring, but may configure them implicitly. For example, the UE may be configured to determine an appropriate (e.g., type) downlink reference signal to be used for beam fault detection and / or radio link monitoring when no reference signal explicitly configured by the RRC is available, as described in various embodiments herein.

[0108] In 906, the UE can monitor reference signals to perform beam fault detection and / or radio link monitoring. For example, the UE can monitor reference signals such as synchronization signal blocks (SSBs) and / or channel state information reference signals (CSI-RS), as well as other possibilities such as location reference signals. In some implementations, the reference signals may support or be associated with physical downlink control channel (PDCCH) reception. The UE can perform signal quality measurements based on the reference signals, such as block error rate (BLER), but other signal quality metrics are also envisioned (e.g., SINR / SNR (signal-to-noise ratio), RSSI (received signal strength indication), RSRP (reference signal received power), RSRQ (reference signal received quality), etc.).

[0109] In 908, the UE can determine a beam fault based on signal quality metrics or generally perform radio link monitoring. For example, in some embodiments, a beam fault can be determined if the signal quality is worse than a threshold (e.g., above or below a BLER threshold, and other possibilities). In some embodiments, instead of a single signal quality difference from a threshold, a beam fault can be determined only after consecutive signal quality measurements are worse than a threshold. In some embodiments, the number of consecutive threshold faults can be configurable, for example, based on messages transmitted by the base station or configuration. The number of thresholds can be configured to n. Therefore, in some embodiments, a beam fault can be determined only after n consecutive (or alternatively, n instances within a specified time period) signal quality threshold faults.

[0110] In some implementations, the UE may be configured to use one or more corresponding beams for receiving and / or transmitting. For example, as determined in 908, the UE may determine a radio link failure when multiple or all of the configured receive and / or transmit beams have failed. For example, if the UE is configured with a primary receive beam and a secondary receive beam, and the UE determines that both receive beams have failed, it may accordingly determine a radio link failure between the UE and the base station.

[0111] In 910, in response to beam failure and / or radio link failure, the UE can, for example, re-establish communication with the base station using a new beam and / or by re-establishing a new radio link. For example, when only a single beam fails, the UE can determine a new beam to replace the current beam, for example, by using a secondary beam already determined between the UE and the base station and / or by determining a new beam to be used with the base station. However, in the case of a radio link failure, the UE can determine to establish a new radio link with the base station, or switch to a new base station and establish a new connection as needed.

[0112] Figures 10 to 14

[0113] As described above, the UE can monitor downlink reference signals (e.g., periodically transmitted downlink reference signals), such as SSB or CSI-RS (and other possibilities). These reference signals can be used to determine link quality, for example, in the case of beam failure or radio link failure.

[0114] In some implementations, these reference signals can be used to detect the hypothetical BLER of PDCCH reception. For example, if the UE detects a BLER higher than a threshold of the downlink reference signal n times consecutively, the UE can determine a beam fault or a radio link fault accordingly.

[0115] As described above, reference signals used to determine beam fault detection and / or radio link monitoring (e.g., type) can be configured by the base station. In some embodiments, these reference signals can be configured, for example, explicitly via an RRC signal. Alternatively or otherwise, if no reference signal configured by RRC exists, a reference signal configured in the Transmission Configuration Indicator (TCI) state of the Control Resource Set (CORESET) can be used. In some embodiments, the TCI state can indicate one or more reference signals. In some embodiments, the TCI state can indicate two different reference signals, such as CSI-RS and SSB. The TCI state can also indicate the quasi-co-occurrence (QCL) of these reference signals, for example, QCL-TypeD and / or QCL-TypeA. QCL-TypeD can be used to indicate spatial reception parameters (e.g., receive beam). QCL-TypeA can indicate that two signals are quasi-co-occurring using the same Doppler drift, Doppler spread, average delay, and / or delay spread. For example, if the PDCCH is quasi-co-located with a CSI-RS having QCL-Type A, the PDCCH and CSI-RS can be quasi-co-located using the same Doppler drift, Doppler spread, average delay, and / or delay spread. In some implementations, if two reference signals configured in TCI states are present, a reference signal having QCL-Type D can be used for beam fault detection.

[0116] like Figure 10 As shown, the UE can determine an appropriate reference signal for beam fault detection and / or radio link monitoring.

[0117] In 1002, if a reference signal for beam fault detection and / or radio link monitoring is configured in the RRC (e.g., explicitly), the UE can use the indicated reference signal (1004). However, if more than one reference signal is configured in the TCI state of the CORESET in the active bandwidth portion (BWP) of the current component carrier (CC) (1006), the UE can choose to configure a reference signal for QCL-Type D in the TCI state of the CORESET (1010). However, if no more than one reference signal is configured in the TCI state, the UE can select that reference signal (1008).

[0118] In some implementations, when all CORESETs fail, the UE can declare a beam failure or radio link failure, for example, when the BLER of the corresponding RS is higher than a threshold, for example, n consecutive times.

[0119] In some implementations, for example, to simplify uplink and downlink beam management, a sounding reference signal (SRS) indication may be introduced in the TCI state. However, SRS indication may or may not be permitted in the CORESET TCI state. Additionally, if SRS is indicated in the CORESET TCI state, and the base station has not yet configured RS for beam failure detection and / or radio link monitoring (e.g., via RRC signaling), the UE may need to (e.g., implicitly) determine which downlink reference signals to use.

[0120] In some implementations, SRS can be introduced only in the TCI state of PDSCH and CSI-RS, but not in the TCI state of CORESET. Alternatively, SRS can be indicated in the TCI state of CORESET when no reference signal is configured for beam fault detection and / or radio link monitoring.

[0121] As an alternative, when a reference signal for beam fault detection and / or radio link monitoring is configured (e.g., explicitly configured by the base station), it is permissible to indicate SRS in the CORESET TCI state. In other words, when beam fault detection and / or radio link monitoring are configured, if SRS is indicated in the CORESET TCI state, the UE may expect the base station to configure the reference signal for beam fault detection and / or radio link monitoring, for example, explicitly via RRC signaling.

[0122] In some implementations, the UE may apply the same beam used for SRS transmission to receive PDCCH in CORESET.

[0123] In some implementations, when SRS is indicated in the TCI state, the base station may not indicate any other reference signal for QCL-typeD in the same TCI state.

[0124] exist Figure 11 In the illustrated implementation, SRS can be indicated in the CORESET's TCI state. Similar to... Figure 10If the BFD / RLM reference signal is configured by RRC (1102), the UE can select the indicated reference signal (1104). However, if, for example, BFD / RLM is explicitly configured but a downlink reference signal for BFD / RLM is not configured, the UE may not perform beam fault detection and / or radio link monitoring for CORESET when SRS is indicated in the TCI state of CORESET (1108). Alternatively, if SRS is not indicated in the TCI state of CORESET (1106), the flowchart can be similar to 1006 / 1008 / 1010 in 1110 / 1112 / 1114.

[0125] exist Figure 12 In the illustrated implementation, SRS can be indicated in the TCI state of the CORESET. 1202 / 1204 / 1206 / 1208 / 1210 / 1212 can operate similarly to 1102 / 1104 / 1106 / 1110 / 1112 / 1114. However, if SRS is indicated in the TCI state of the CORESET (1204), the RS configuration in the TCI state (1212) can be handled differently. For example, if more than one RS (1212) is configured in the TCI state of the CORESET in the active BWP of the current CC, the UE can choose to configure a downlink reference signal for a QCL type other than QCL-typeD in the TCI state of the CORESET, such as a downlink reference signal for QCL-typeA (1216). As mentioned above, QCL-typeA can indicate that two RSs use the same Doppler drift, Doppler spread, average delay, and / or delay spread for quasi-co-biting.

[0126] However, if more than one RS (1214) is not configured in the TCI state of the CORESET in the current CC active BWP, different options can be used depending on various implementations. In Option 1, if the SRS is configured only in the TCI state of the CORESET, the UE can skip the BFD / RLM of the CORESET. In Option 2, if the SRS is configured only in the TCI state of the CORESET, the UE can perform BFD / RLM based on the SSB / CSI-RS in the same bandwidth portion as the CORESET. In one implementation, the SSB used for initial access (e.g., associated with the Master Information Block (MIB) decoded by the UE) can be used. In some implementations, a periodic CSI-RS with the lowest resource ID can be used / selected. In some implementations, a downlink reference signal (e.g., SSB and / or CSI-RS) for path loss estimation of the SRS can be used.

[0127] exist Figure 13In the illustrated implementation, SRS can be indicated in the TCI state of CORESET. 1302 / 1304 / 1306 / 1308 / 1310 / 1312 can operate similarly to 1202 / 1204 / 1206 / 1208 / 1210 / 1212. However, if, for example, BFD / RLM is explicitly configured and a downlink reference signal is not configured, the UE can perform BFD / RLM using the downlink reference signal configured in the spatial relationship information of the SRS (1318). However, if a downlink reference signal is not configured in the spatial relationship information (1314), the UE can skip BFD / RLM in CORESET (1316). Alternatively, the following can be applied: Figure 12 Implementation schemes. For example, if a downlink reference signal is not configured in the special relationship information of the SRS, then 1216 can be applied. In some implementations, the downlink reference signal can be a periodic reference signal, such as an SSB or CSI-RS.

[0128] like Figure 14 As shown, if the UE performs BFD / RLM for a CORESET configured with the SRS in its TCI state, a counter for beam failure detection and radio link monitoring can be maintained based on the UE transmit beam of the corresponding SRS. In some implementations, the counter can be reset if the UE changes the transmit beam (transmit spatial domain filter) of the SRS. The counter can be used to determine the number of consecutive beam failures and / or instances of desynchronization, for example, to determine beam failures.

[0129] More specifically, as shown in the figure, before the SRS in TCI state changes from transmit beam 1 to transmit beam 2, there may be three downlink reference signal instances. Accordingly, the counter may increment from 1 to 3 before the change and reset to 1 after the change.

[0130] Exemplary Implementation

[0131] The following description provides exemplary embodiments corresponding to the various implementations described herein, such as those with... Figures 9 to 14 The corresponding method.

[0132] Example 1. An apparatus comprising: one or more processors configured to cause a user equipment (UE) to: establish communication with a base station; determine one or more beams to perform downlink communication from the base station; receive an indication of a first type of downlink reference signal from the base station to perform beam fault detection; perform a signal quality measurement on the one or more beams using the first type of downlink reference signal; and determine a beam fault of at least one of the one or more beams based on the performed signal quality measurement.

[0133] Example 2. The apparatus according to Example 1, wherein the determination of beam fault is performed by comparing the signal quality measurement with a threshold.

[0134] Example 3. According to the apparatus of Example 1, wherein determining a beam fault includes, for n consecutive times: performing a corresponding signal quality measurement on the first beam; and comparing the corresponding signal quality measurement with a signal quality threshold; wherein a beam fault is determined when the corresponding signal quality measurement falls below the signal quality threshold for n consecutive times.

[0135] Example 4. The apparatus according to Example 1, wherein the indication of receiving a downlink reference signal includes: receiving radio resource control (RRC) signaling that explicitly indicates a downlink reference signal of the first type.

[0136] Example 5. The apparatus according to Example 1, wherein the first type of downlink reference signal includes a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS).

[0137] Example 6. The apparatus according to Example 1, wherein the indication for receiving the downlink reference signal of the type includes receiving a Transmission Configuration Indicator (TCI); wherein one or more processors are configured to determine the downlink reference signal of the type based on the TCI.

[0138] Example 7. The apparatus according to Example 6, wherein the TCI is associated with a control resource set (CORESET), wherein the TCI indicates multiple types of downlink reference signals, wherein determining the type of downlink reference signal includes: selecting a first type of downlink reference signal from the multiple types of downlink reference signals indicated in the TCI.

[0139] Example 8. The apparatus according to Example 6, wherein the TCI indicates a probe reference signal (SRS), wherein the downlink reference signal for determining the type based on the TCI is based on the SRS indicated in the TCI.

[0140] Example 9. The apparatus according to Example 8, wherein determining the type of downlink reference signal based on the TCI includes: selecting the type of downlink reference signal used in the same bandwidth portion.

[0141] Example 10. A user equipment (UE) includes: a wireless communication circuit; and one or more processors coupled to the wireless communication circuit, wherein the one or more processors are configured to cause the UE to: establish communication with a base station; determine one or more beams to perform downlink communication from the base station; receive a transmission configuration indicator (TCI) from the base station; determine a downlink reference signal for performing beam fault detection based on the TCI; perform signal quality measurements on the one or more beams using the downlink reference signal, wherein performing the signal quality measurements includes: comparing a plurality of signal quality measurements to a threshold; and determining a beam fault in at least one of the one or more beams based on the performed signal quality measurements.

[0142] Example 11. The UE according to Example 10, wherein the TCI is associated with a control resource set (CORESET), wherein the TCI indicates a plurality of downlink reference signals, wherein determining the downlink reference signal includes: selecting the downlink reference signal from the plurality of downlink reference signals indicated in the TCI.

[0143] Example 12. The apparatus according to Example 10, wherein the TCI indicates a probe reference signal (SRS), and wherein the determination of the downlink reference signal based on the TCI is based on the SRS indicated in the TCI.

[0144] Example 13. The apparatus according to Example 12, wherein determining the downlink reference signal based on the TCI includes: selecting the downlink reference signal used in the same bandwidth portion.

[0145] Example 14. According to the UE of Example 10, wherein determining a beam fault includes, for n consecutive times: performing a corresponding signal quality measurement on the first beam; and comparing the corresponding signal quality measurement with a signal quality threshold; wherein a beam fault is determined when the corresponding signal quality measurement falls below the signal quality threshold for n consecutive times.

[0146] Example 15. The UE according to Example 10, wherein the downlink reference signal includes a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS).

[0147] Example 16. A non-transitory computer-accessible memory medium storing program instructions executable by one or more processors to cause a user equipment (UE) to: establish communication with a base station, wherein establishing communication with the base station includes: determining one or more beams to perform communication with the base station; receiving from the base station an implicit indication of a downlink reference signal to be used for beam fault detection; determining the downlink reference signal for performing beam fault detection based on the implicit indication; performing signal quality measurements on the one or more beams using the downlink reference signal, wherein performing the signal quality measurements includes: comparing a plurality of signal quality measurements to a threshold; and determining a beam fault in at least one of the one or more beams based on the performed signal quality measurements.

[0148] Example 17. A non-transitory computer-accessible memory medium according to Example 16, wherein the implicit indication includes a transfer configuration indicator (TCI).

[0149] Example 18. A non-transitory computer-accessible memory medium according to Example 17, wherein the TCI is associated with a control resource set (CORESET), wherein the TCI indicates multiple types of downlink reference signals, wherein determining the type of downlink reference signal includes selecting a QCL-TypeD downlink reference signal from the multiple types of downlink reference signals indicated in the TCI.

[0150] Example 19. A non-transitory computer-accessible memory medium according to Example 17, wherein the TCI indicates a probe reference signal (SRS), wherein the determination of the downlink reference signal based on the TCI is based on the SRS indicated in the TCI.

[0151] Example 20. The non-transitory computer-accessible memory medium according to Example 16, wherein determining the downlink reference signal based on the implicit indication includes: selecting the downlink reference signal for initial access.

[0152] Example 21. The non-transitory computer-accessible memory medium according to Example 16, wherein determining the downlink reference signal based on the implicit indication includes: selecting the downlink reference signal for path loss estimation.

[0153] Embodiments of this 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.

[0154] In some embodiments, a non-transitory computer-readable storage medium may be configured to store program instructions and / or data, wherein if the program instructions are executed by a computer system, the computer system performs a method, such as any method embodiment 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.

[0155] In some implementations, the device (e.g., UE) may be configured to include a processor (or a set of processors) and a memory medium storing program instructions, wherein the processor is configured to read from 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.

[0156] In some embodiments, an apparatus includes: an antenna; a radio component coupled to the antenna; and a processing element coupled to the radio component. The apparatus can be configured to implement any of the method embodiments described above.

[0157] In some implementations, the memory medium may store program instructions that, when executed, cause the device to implement any of the method implementations described above.

[0158] In some embodiments, an apparatus includes at least one processor (e.g., in communication with a memory) configured to implement any of the method embodiments described above.

[0159] In some implementations, a method includes any action or combination of actions as substantially described herein in the detailed description and claims.

[0160] In some embodiments, a method is performed as described herein with reference to each or any combination of the accompanying drawings, each or any combination of the paragraphs in the detailed description, each or any combination of the accompanying drawings and / or detailed description, or each or any combination of the claims.

[0161] In some implementations, a wireless device is configured to perform any action or combination of actions as substantially described herein in the detailed description, drawings, and / or claims.

[0162] In some embodiments, a wireless device includes any component or combination of components as described herein in the detailed description and / or accompanying drawings.

[0163] In some embodiments, a non-volatile computer-readable medium may store instructions that, when executed, cause to perform any or a combination of actions as substantially described herein in the detailed description and / or accompanying drawings.

[0164] In some implementations, an integrated circuit is configured to perform any action or combination of actions as substantially described herein in the detailed description and / or accompanying drawings.

[0165] In some implementations, a mobile station is configured to perform any action or combination of actions as substantially described herein in the detailed description and / or accompanying drawings.

[0166] In some embodiments, a mobile station includes any components or combinations of components as described herein in the detailed description and / or accompanying drawings.

[0167] In some implementations, a mobile device is configured to perform any action or combination of actions as substantially described herein in the detailed description and / or accompanying drawings.

[0168] In some embodiments, a mobile device includes any component or combination of components as described herein in the detailed description and / or accompanying drawings.

[0169] In some implementations, a network node is configured to perform any action or combination of actions as substantially described herein in the detailed description and / or accompanying drawings.

[0170] In some implementations, a network node includes any component or combination of components as described herein in the detailed description and / or accompanying drawings, as included in a mobile device.

[0171] In some implementations, a base station is configured to perform any action or combination of actions as substantially described herein in the detailed description and / or accompanying drawings.

[0172] In some implementations, a base station includes any component or combination of components as described herein in the detailed description and / or accompanying drawings, as included in a mobile device.

[0173] In some implementations, 5G NR network nodes or base stations are configured to perform any action or combination of actions as substantially described herein in the detailed description and / or accompanying drawings.

[0174] In some implementations, a 5G NR network node or base station includes any component or combination of components as described herein in the detailed description and / or accompanying drawings, as included in a mobile device.

[0175] As is widely recognized, the use of personally identifiable information should comply with privacy policies and practices that are generally accepted to meet or exceed industry or governmental requirements for protecting 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 authorized use should be clearly explained to users.

[0176] By interpreting each message / signal X received by the user equipment (UE) in the downlink as a message / signal X transmitted by the base station, and interpreting each message / signal Y transmitted by the UE in the uplink as a message / signal Y received by the base station, any method described herein for operating the UE can serve as the basis for a corresponding method for operating the base station.

[0177] Although the above embodiments have been described in considerable detail, many variations and modifications will become apparent to those skilled in the art once the disclosure is fully understood. This disclosure is intended to render the following claims as encompassing all such variations and modifications.

Claims

1. An apparatus for wireless communication, comprising: One or more processors, the one or more processors being configured to enable a user-equipped device (UE): Determine one or more beams to perform downlink communication from the base station; Receive a Transmission Configuration Indicator (TCI) from the base station implicitly, the TCI indicating: Detection reference signal SRS, and Based on the first type of downlink reference signal of the TCI; The first type of downlink reference signal is determined to be used in the same bandwidth portion of the BWP as the control resource set CORESET; The first type of downlink reference signal is selected to perform beam fault detection, the selection being based on the following: The lowest resource identifier ID of the downlink reference signal of the first type, The implicit indication. Path loss estimation for the SRS Determine that the first type of downlink reference signal is used in the same BWP as the CORESET, and The SRS and the downlink reference signal of the first type are indicated in the TCI; Use the downlink reference signal of the first type to perform signal quality measurements on the one or more beams; as well as The beam fault of at least one of the one or more beams is determined based on the executed signal quality measurement.

2. The apparatus of claim 1, wherein the determination of beam fault is performed by comparing the signal quality measurement with a threshold.

3. The apparatus of claim 1, wherein determining the beam fault comprises, n consecutively: Perform corresponding signal quality measurements on the first beam; and The corresponding signal quality measurement is compared with the signal quality threshold. A beam fault is determined when the corresponding signal quality measurement drops below the signal quality threshold n times consecutively.

4. The apparatus of claim 1, wherein the first type of downlink reference signal includes a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS).

5. The apparatus of claim 1, wherein the TCI is associated with a control resource set CORESET, wherein the TCI indicates multiple types of downlink reference signals, wherein selecting the first type of downlink reference signal includes: Select the first type of downlink reference signal from the multiple types of downlink reference signals indicated in the TCI.

6. A user equipment (UE), comprising: Wireless communication circuits; as well as One or more processors coupled to the wireless communication circuit, wherein the one or more processors are configured to cause the UE to: Determine one or more beams to perform downlink communication from the base station; Receive a Transmission Configuration Indicator (TCI) from the base station implicitly, the TCI indicating: Detection reference signal SRS, and Based on the first type of downlink reference signal of the TCI; The first type of downlink reference signal is determined to be used in the same bandwidth portion of the BWP as the control resource set CORESET; The first type of downlink reference signal is selected to perform beam fault detection, the selection being based on the following: The lowest resource identifier ID of the downlink reference signal of the first type, The implicit indication. Path loss estimation for the SRS Determine that the first type of downlink reference signal is used in the same BWP as the CORESET, and The SRS and the downlink reference signal of the first type are indicated in the TCI; Use the downlink reference signal of the first type to perform signal quality measurements on the one or more beams; as well as The beam fault of at least one of the one or more beams is determined based on the executed signal quality measurement.

7. The UE of claim 6, wherein the TCI is associated with CORESET, wherein the TCI indicates a plurality of downlink reference signals, wherein selecting the first type of downlink reference signal includes: Select the first type of downlink reference signal from the plurality of downlink reference signals indicated in the TCI.

8. The UE of claim 6, wherein determining the beam fault comprises, n consecutively: Perform corresponding signal quality measurements on the first beam; and The corresponding signal quality measurement is compared with the signal quality threshold. A beam fault is determined when the corresponding signal quality measurement drops below the signal quality threshold n times consecutively.

9. The UE of claim 6, wherein the first type of downlink reference signal includes a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS).

10. A method for wireless communication, comprising a user-equipped UE: Determine one or more beams to perform communication with the base station; Receive a Transmission Configuration Indicator (TCI) from the base station implicitly, the TCI indicating: Detection reference signal SRS, and Based on the first type of downlink reference signal of the TCI; The first type of downlink reference signal is determined to be used in the same bandwidth portion of the BWP as the control resource set CORESET; The first type of downlink reference signal is selected to perform beam fault detection, the selection being based on the following: The lowest resource identifier ID of the downlink reference signal of the first type, The implicit indication. Path loss estimation for the SRS Determine that the first type of downlink reference signal is used in the same BWP as the CORESET, and The SRS and the downlink reference signal of the first type are indicated in the TCI; Use the downlink reference signal of the first type to perform signal quality measurements on the one or more beams; as well as The beam fault of at least one of the one or more beams is determined based on the executed signal quality measurement.

11. The method of claim 10, wherein the TCI is associated with CORESET, wherein the TCI indicates multiple types of downlink reference signals, wherein selecting the first type of downlink reference signal includes: Select the QCL-TypeD downlink reference signal from the various types of downlink reference signals indicated in the TCI.

12. The method of claim 10, wherein selecting the first type of downlink reference signal includes selecting the first type of downlink reference signal for initial access.

13. A non-transitory computer-readable storage medium storing program instructions, said program instructions being executable by one or more processors to cause a user equipment (UE) to perform the method according to any one of claims 10 to 12.

Images