Method and apparatus for beam fault detection

Abstract

One aspect of the present disclosure includes a method, system, and computer readable medium for receiving a beam fault detection reference signal configuration, detecting an absence of a configured and quasi-co-located beam fault detection reference signal in a monitored control resource set (CORESET), and transmitting the configured and quasi-co-located beam fault detection reference signal configuration to the computer readable medium. And using the reference signal indicated in the CORESET transmission configuration indicator state for beam fault detection.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of June 26, 2019, application number 201980048571.3 and invention name “Method and device for beam fault detection”.

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS

[0003] This application claims priority to U.S. Provisional Application No. 62 / 693,222, filed on July 2, 2018, entitled “METHODS AND APPARATUS FOR BEAM FAILURE DETECTION,” and U.S. Patent Application No. 16 / 452,155, filed on June 25, 2019, entitled “METHODS AND APPARATUS FOR BEAM FAILURE DETECTION,” the entire contents of which are expressly incorporated herein by reference. Background Art

[0004] Aspects of the present disclosure relate generally to wireless communication networks, and more particularly, to apparatus and methods for beam failure detection.

[0005] Wireless communication networks are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single-carrier frequency division multiple access (SC-FDMA) systems.

[0006] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at municipal, national, regional, and even global levels. For example, the fifth generation (5G) wireless communication technology, which may be referred to as New Radio (NR), is envisioned to expand and support different usage scenarios and applications relative to current mobile network generations. On the one hand, 5G communication technology may include: enhanced mobile broadband addressing people-centric use cases for accessing multimedia content, services, and data; ultra-reliable low latency communications (URLLC) with certain latency and reliability specifications; and massive machine type communications, which may allow very large numbers of connected devices and the transmission of relatively small amounts of non-delay sensitive information. However, as the demand for mobile broadband access continues to grow, further improvements in NR communication technology and other aspects may be needed.

[0007] In a communication network, a user equipment (UE) may perform beam failure detection to evaluate the integrity of a signal sent from a base station (BS). However, some resources may not be properly configured due to, for example, latency, and may be difficult for the UE to use for beam failure detection. Therefore, an improved beam failure detection method may be needed. Summary of the invention

[0008] The following content presents a brief summary of one or more aspects in order to provide a basic understanding of such aspects. The summary is not an extensive overview of all contemplated aspects, and is neither intended to identify key or important elements of all aspects, nor to delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that is presented later.

[0009] Various aspects of the present disclosure include a method for: receiving a beam failure detection BFD reference signal RS configuration; receiving at least one medium access control element MAC CE; configuring a configured and quasi-co-located BFD RS based on the received at least one MAC CE; and performing beam failure detection using the configured and quasi-co-located BFD RS.

[0010] Aspects of the present disclosure include a user device, the user device comprising: a memory; a transceiver; one or more processors, which are operably coupled to the memory and the transceiver, and the one or more processors are configured to perform the following steps: receiving a beam failure detection BFD reference signal RS configuration via the transceiver; receiving at least one medium access control control element MAC CE; configuring a configured and quasi-co-located BFD RS based on the received at least one MAC CE; and performing beam failure detection using the configured and quasi-co-located BFD RS.

[0011] Aspects of the present disclosure include a method for receiving a beam failure detection reference signal configuration, detecting the absence of a configured and quasi-co-located beam failure detection reference signal in a monitored control resource set (CORESET), and utilizing a reference signal indicated in a CORESET transmission configuration indicator state for beam failure detection.

[0012] Other aspects of the present disclosure include an apparatus having a memory, a transceiver, and one or more processors communicatively coupled to the memory and the transceiver, the one or more processors configured to perform the steps of receiving a beam failure detection reference signal configuration, detecting the absence of a configured and quasi-co-located beam failure detection reference signal in a monitored CORESET, and utilizing a reference signal indicated in a CORESET transmission configuration indicator state for beam failure detection.

[0013] Some aspects of the present disclosure include a non-transitory computer-readable medium having instructions stored therein, which, when executed by one or more processors, cause the one or more processors to perform the steps of receiving a beam failure detection reference signal configuration, detecting the absence of a configured and quasi-co-located beam failure detection reference signal in a monitored CORESET, and utilizing a reference signal indicated in a CORESET transmission configuration indicator state for beam failure detection.

[0014] Aspects of the present disclosure include a method for receiving a beam failure detection reference signal configuration, detecting the absence of a configured and quasi-co-located beam failure detection reference signal in a monitored CORESET, and utilizing a demodulation reference signal of the CORESET or decoding statistics of a physical downlink control channel carried by the CORESET to evaluate CORESET quality for beam failure detection.

[0015] Other aspects of the present disclosure include an apparatus having a memory, a transceiver, and one or more processors communicatively coupled to the memory and the transceiver, the one or more processors configured to perform the steps of receiving a beam failure detection reference signal configuration, detecting the absence of a configured and quasi-co-located beam failure detection reference signal in a monitored CORESET, and utilizing a demodulation reference signal of the CORESET or decoding statistics of a physical downlink control channel carried by the CORESET to evaluate CORESET quality for beam failure detection.

[0016] Some aspects of the present disclosure include a non-transitory computer-readable medium having instructions stored therein, which, when executed by one or more processors, cause the one or more processors to perform the steps of receiving a beam failure detection reference signal configuration, detecting the absence of a configured and quasi-co-located beam failure detection reference signal in a monitored CORESET, and utilizing a demodulation reference signal of the CORESET or decoding statistics of a physical downlink control channel carried by the CORESET to evaluate CORESET quality for beam failure detection.

[0017] Aspects of the present disclosure include a method for receiving a beam fault detection (BFD) reference signal (RS) configuration, waiting until configuration of a corresponding quasi-co-located BFD RS is completed, and utilizing the configured and quasi-co-located BFD RS for beam fault detection.

[0018] Other aspects of the present disclosure include an apparatus having a memory, a transceiver, and one or more processors communicatively coupled to the memory and the transceiver, the one or more processors being configured to perform the following steps: receiving a beam failure detection reference signal configuration, waiting until configuration of a corresponding quasi-co-located BFD RS is completed, and utilizing the configured and quasi-co-located BFD RS for beam failure detection.

[0019] Some aspects of the present disclosure include a non-transitory computer-readable medium having instructions stored therein, which, when executed by one or more processors, cause the one or more processors to perform the following steps: receiving a beam failure detection reference signal configuration, waiting until configuration of a corresponding quasi-co-located BFD RS is completed, and utilizing the configured and quasi-co-located BFD RS for beam failure detection.

[0020] To accomplish the foregoing and related ends, one or more aspects comprise the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are indicative of only some of the various ways in which the principles of the various aspects may be employed, and the description is intended to include all such aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The disclosed aspects will be described below in conjunction with the accompanying drawings, which are provided to illustrate and not to limit the disclosed aspects, wherein like names refer to like elements, and wherein:

[0022] Figure 1 is a schematic diagram of an example of a wireless communication network including at least one user equipment;

[0023] Figure 2 is a schematic diagram of an example of a user device;

[0024] Figure 3 is a schematic diagram of an example of a base station;

[0025] Figure 4 is a process flow diagram of an example of a method for performing enhanced beam failure detection using reference signals indicated in a CORESET;

[0026] Figure 5 is a process flow diagram of an example of performing an enhanced beam failure detection method using a demodulation reference signal of a CORESET; and

[0027] Figure 6 is a process flow diagram of an example of a method of performing enhanced beam failure detection using configured and quasi-co-located beam failure detection reference signals. DETAILED DESCRIPTION

[0028] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configuration in which the concepts described herein may be practiced. The detailed description includes specific details in order to provide a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0029] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms (collectively referred to as "elements"), etc. These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0030] For example, any part of an element or an element or any combination of elements may be implemented as a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system-on-chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform various functionalities described throughout the present disclosure. One or more processors in a processing system may execute software. Software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable programs, execution threads, processes, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other.

[0031] Therefore, in one or more exemplary embodiments, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored or encoded as one or more instructions or codes on a computer-readable medium, such as a computer storage medium. The storage medium may be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, a combination of computer-readable media of the above types, or any other medium that can be used to store computer executable code in the form of instructions or data structures and can be accessed by a computer.

[0032] It should be noted that the techniques described herein can be used for various wireless communication networks, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other systems. The terms "system" and "network" are usually used interchangeably. A CDMA system can implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-2000, IS-95 and IS-856 standards. IS-2000 versions 0 and A are usually referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is usually referred to as CDMA2000 1xEV-DO, High Speed ​​Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. A TDMA system can implement radio technologies such as Global System for Mobile Communications (GSM). An OFDMA system may implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 902.11 (Wi-Fi), IEEE 902.16 (WiMAX), IEEE 902.20, Flash-OFDM TMEtc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are new versions of UMTS using E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein can be used for the systems and radio technologies mentioned above and other systems and radio technologies, including cellular (e.g., LTE) communications on shared radio spectrum bands. However, the following description describes LTE / LTE-A and / or 5G New Radio (NR) systems for example purposes, and LTE or 5G NR terms are used in most of the following descriptions, although these techniques are applicable to LTE / LTE-A and 5G NR applications, for example, to other next generation communication systems.

[0033] In some aspects, the UE may be explicitly configured with a beam failure detection (BFD) reference signal (RS) set. For example, the serving cell may provide a set q0 of periodic channel state information (CSI) RS resource configuration indices to the UE via the high-level parameter failureDetectionResources. If configured, the UE may use the configured BFD RS that is quasi-co-located (QCLed) with the monitored control resource set (CORESET) for beam failure detection. For set q0, the UE may evaluate the radio link quality based on the periodic CSI-RS resource configuration or the synchronization signal / physical broadcast channel (SS / PBCH) block that is quasi-co-located with the demodulation reference signal (DM-RS) received by the physical downlink control channel (PDCCH) monitored by the UE.

[0034] In certain aspects, if there is no explicit BFD RS configuration, the UE may implicitly determine the BFD RS set. For example, if the higher layer parameter failureDetectionResources is not provided to the UE, the UE may determine that the set includes an SS / PBCH block index and a periodic CSI-RS resource configuration index having the same value as an RS index in the RS set indicated by the transmission configuration indicator (TCI) state of the corresponding control resource set used by the UE to monitor the PDCCH.

[0035] In some aspects, an insufficient number of configured BFD RSs may be quasi-co-located (QCLed) with a monitored CORESET. In one example, a CORESET may be reconfigured, for example, by a medium access control (MAC) control element (CE), but configuration of the corresponding quasi-co-located BFD RSs may not have been initiated or completed due to a radio resource control (RRC) configuration latency. In another example, the number of monitored CORESETs (e.g., 3 per bandwidth part (BWP)) may exceed the maximum number of configured BFD RSs (e.g., 2 per BWP).

[0036] In some aspects, when some monitored CORESETs include configured quasi-co-located BFD RSs and other monitored CORESETs do not, if the configured quasi-co-located BFD RSs have poor quality, the UE may falsely detect a beam failure event even if other monitored CORESETs still have good quality (e.g., assuming the block error rate (BLER) is below a predetermined threshold).

[0037] In other aspects, when there is no configured quasi-co-located BFD RS quasi-co-located with any monitored CORESET, the UE may not be able to correctly perform beam failure detection and may not declare a beam failure event even if all monitored CORESETS have poor quality.

[0038] In some aspects, if there is an explicit BFD RS configuration, but the monitored CORESET does not include a configured and quasi-co-located BFD RS, the UE may use the RS(s) indicated in the CORESET TCI state for BFD (e.g., an RS that provides at least TypeD QCL information). Here, the UE may use the RS(s) when it is in the SS block and / or periodic CSI-RS. Alternatively, the UE may use the RS when no monitored CORESET has a configured and quasi-co-located BFD RS.

[0039] In other aspects, if there is an explicit BFD RS configuration, but the monitored CORESET does not include a configured and quasi-co-located BFD RS, the UE may evaluate the CORESET quality of BFD using the CORESET's DM-RS or by decoding statistics of the PDCCH carried by the CORESET.

[0040] In certain aspects, MAC CE-based BFD RS configuration / reconfiguration may be introduced to reduce the latency of RRC configuration / reconfiguration. CORESET and corresponding quasi-co-located BFD-RS may be configured / reconfigured simultaneously by a single MAC-CE or multiple MAC-CEs in the same frame or in different frames but close in time (e.g., in adjacent time slots of resource elements).

[0041] In other aspects, for example, if there is an explicit BFD RS configuration, the CORESET may not be used until the configuration of the corresponding quasi-co-located BFD RS is completed.

[0042] See also Figure 1 According to various aspects of the present disclosure, a wireless communication network 100 includes at least one UE 110 including a modem 140. The modem 140 may include a communication component 150 configured to communicate with other UEs 110 and / or base stations 105, such as transmitting / receiving messages to other UEs 110 and / or base stations 105. The modem 140 may include a BFD component 152 configured to detect a beam failure event using resources available to the UE 110.

[0043] The wireless network may include at least one base station 105 including a modem 160. The modem 160 may include a communication component 170 configured to communicate with one or more UEs 110 and / or other base stations 105, such as to transmit / receive messages to / from the UEs 110 and / or other base stations 105.

[0044] The modem 160 of the base station 105 may be configured to communicate with other base stations 105 and UE 110 via a cellular network, a Wi-Fi network, or other wireless and wired networks. The modem 140 of the UE 110 may be configured to communicate with the base station 105 via a cellular network, a Wi-Fi network, or other wireless and wired networks. The modems 140, 160 may receive and send data packets.

[0045] The wireless communication network 100 may include one or more base stations 105, one or more UEs 110, and a core network, such as an evolved packet core (EPC) 180 and / or a 5G core (5GC) 190. The EPC 180 and / or the 5GC 190 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The base stations 105 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC 180 via a backhaul link 132 (e.g., S1, etc.). The base stations 105 configured for 5G NR (collectively referred to as the Next Generation RAN (NG-RAN)) may interface with the 5GC 190 via a backhaul link 134. The base station 105 may perform one or more of the following functions, among other functions: delivery of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), subscriber and device tracking, RAN information management (RIM), paging, positioning, and delivery of warning messages. The base stations 105 may communicate with each other directly or indirectly (e.g., through EPC 180 or 5GC 190) via backhaul links 125, 132, or 134 (e.g., Xn, X1, or X2 interfaces). The backhaul links 125, 132, 134 may be wired or wireless communication links.

[0046] The base station 105 can communicate wirelessly with the UE 110 via one or more antennas. Each of the base stations 105 can provide communication coverage for a respective geographic coverage area 130. In some examples, the base station 105 can be referred to as a base station, a radio base station, an access point (AP), an access node, a radio transceiver, a NodeB, an eNodeB (eNB), a gNodeB (gNB), a home NodeB, a home eNodeB, a relay, a transceiver function, a basic service set (BSS), an extended service set (ESS), a transmit receive point (TRP), or some other suitable term. The geographic coverage area 130 of the base station 105 can be divided into sectors or cells (not shown) that constitute only a portion of the coverage area. The wireless communication system 100 may include different types of base stations 105 (e.g., a macro cell base station or a small cell base station described below). In addition, multiple base stations 105 can operate according to different technologies in a variety of communication technologies (e.g., 5G (new radio or "NR"), fourth generation (4G) / LTE, 3G, Wi-Fi, Bluetooth, etc.), and therefore there may be overlapping geographic coverage areas 130 for different communication technologies.

[0047] In some examples, the wireless communication network 100 may be or include one or any combination of communication technologies, including NR or 5G technology, LTE or LTE Advanced (LTE-A) or MuLTEfire technology, Wi-Fi technology, Bluetooth technology, or any other long-range or short-range wireless communication technology. In LTE / LTE-A / MuLTEfire networks, the term evolved Node B (eNB) may be generally used to describe the base station 105, and the term UE may be generally used to describe the UE 110. The wireless communication network 100 may be a heterogeneous technology network in which different types of eNBs provide coverage for various geographic areas. For example, each eNB or base station 105 may provide communication coverage for a macro cell, a small cell, or other types of cells.

[0048] A macro cell may generally cover a relatively large geographic area (eg, several kilometers in radius) and may allow unrestricted access by UEs 110 that subscribe to service with the network provider.

[0049] Compared to a macro cell, a small cell may include a base station with relatively low transmission power, which may operate in the same or different frequency bands (e.g., authorized, unauthorized, etc.) as the macro cell. According to various examples, a small cell may include a pico cell, a femto cell, and a micro cell. For example, a pico cell may cover a small geographic area and may allow unrestricted access to a UE 110 that subscribes to a service from a network provider. A femto cell may also cover a small geographic area (e.g., a home), and may provide limited access and / or unrestricted access by a UE 110 having an association with a femto cell (e.g., in the case of limited access, a UE 110 in a closed subscriber group (CSG) of a base station 105, which may include a UE 110 of a user in a home, etc.). An eNB for a macro cell may be referred to as a macro eNB. An eNB for a small cell may be referred to as a small cell eNB, a pico eNB, a femto eNB, or a home eNB. An eNB may support one or more (e.g., two, three, four, etc.) cells (e.g., component carriers).

[0050] A communication network that can adapt to some different disclosed examples can be a packet-based network operating according to a layered protocol stack, and the data in the user plane can be based on IP. The user plane protocol stack (e.g., packet data convergence protocol (PDCP), radio link control (RLC), MAC, etc.) can perform packet segmentation and reorganization to communicate on a logical channel. For example, the MAC layer can perform priority handling and multiplex logical channels into transport channels. The MAC layer can also use hybrid automatic repeat / request (HARQ) to provide retransmission at the MAC layer, thereby improving link efficiency. In the control plane, the RRC protocol layer can provide the establishment, configuration, and maintenance of the RRC connection between the UE 110 and the base station 105. The RRC protocol layer can also be used for EPC 180 or 5GC 190 support of radio bearers for user plane data. At the physical (PHY) layer, transport channels can be mapped to physical channels.

[0051] UE 110 may be dispersed throughout the wireless communication network 100, and each UE 110 may be fixed or mobile. UE 110 may also include or be referred to by those skilled in the art as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term. UE 110 may be a cellular phone, a smart phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop computer, a cordless phone, a smart watch, a wireless local loop (WLL) station, an entertainment device, a vehicle-mounted component, a customer premises equipment (CPE), or any device capable of communicating in the wireless communication network 100. Some non-limiting examples of UE 110 may include a Session Initiation Protocol (SIP) phone, a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similar functional device. In addition, UE 110 may be an Internet of Things (IoT) and / or Machine-to-Machine (M2M) type device, for example, a low power, low data rate (e.g., relative to a wireless phone) type device that may not communicate frequently with the wireless communication network 100 or other UEs in some aspects. Some examples of IoT devices may include parking meters, gas pumps, toasters, vehicles, and heart monitors. UE 110 is capable of communicating with various types of base stations 105 and network devices, including macro eNBs, small cell eNBs, macro gNBs, small cell gNBs, relay base stations, etc.

[0052] UE 110 may be configured to establish one or more wireless communication links 135 with one or more base stations 105. The wireless communication links 135 shown in the wireless communication network 100 may carry uplink (UL) transmissions from UE 110 to base station 105, or downlink (DL) transmissions from base station 105 to UE 110. Downlink transmissions may also be referred to as forward link transmissions, and uplink transmissions may also be referred to as reverse link transmissions. Each wireless communication link 135 may include one or more carriers, wherein each carrier may be a signal composed of multiple subcarriers (e.g., waveform signals of different frequencies) modulated according to the various radio technologies described above. Each modulated signal may be sent on a different subcarrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, user data, etc. In one aspect, the wireless communication link 135 may use FDD (e.g., using paired spectrum resources) or TDD operation (e.g., using unpaired spectrum resources) to send bidirectional communications. Frame structures may be defined for FDD (e.g., frame structure type 1) and TDD (e.g., frame structure type 2). Moreover, in some aspects, wireless communication link 135 may represent one or more broadcast channels.

[0053] In some aspects of the wireless communication network 100, the base station 105 or the UE 110 may include multiple antennas for employing an antenna diversity scheme to improve the communication quality and reliability between the base station 105 and the UE 110. Additionally or alternatively, the base station 105 or the UE 110 may employ MIMO technology, which may utilize a multipath environment to transmit multiple spatial layers carrying the same or different coded data.

[0054] The wireless communication network 100 may support operations on multiple cells or carriers, such as carrier aggregation (CA) or multi-carrier operation. The terms "carrier", "component carrier", "cell" and "channel" may be used interchangeably herein. The UE 110 may be configured with multiple downlink component carriers (CCs) and one or more uplink CCs for carrier aggregation. Carrier aggregation may be used with FDD and TDD component carriers. The communication link 135 may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming and / or transmit diversity. The base station 105 / UE 110 may use a spectrum bandwidth of up to Y MHz (e.g., 5, 10, 15, 20, 30, 50, 100, 200, 400 MHz, etc.) per carrier, which is allocated in a total of up to Yx MHz (x = number of component carriers) for transmission in each direction. The carriers may be adjacent to each other, or may not be adjacent. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​than for UL). The component carrier may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0055] Certain UEs 110 may communicate with each other using a device-to-device (D2D) communication link 138. The D2D communication link 138 may use DL / UL WWAN spectrum. The D2D communication link 138 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). The D2D communication may be through a variety of wireless D2D communication systems, such as, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on IEEE 802.11 standards, LTE, or NR.

[0056] The wireless communication network 100 may also include a base station 105 operating according to Wi-Fi technology (e.g., a Wi-Fi access point) that communicates with a UE 110 operating according to Wi-Fi technology (e.g., a Wi-Fi station (STA)) via a communication link in an unlicensed spectrum (e.g., 5 GHz). When communicating in the unlicensed spectrum, the STA and the AP may perform a clear channel assessment (CCA) or a listen-before-talk (LBT) procedure before communicating to determine whether a channel is available.

[0057] Small cells can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cells can adopt NR and use the same 5GHz unlicensed spectrum used by Wi-Fi APs. Small cells that adopt NR in unlicensed spectrum can improve the coverage of the access network and / or increase the capacity of the access network.

[0058] Base station 105, whether a small cell or a large cell (e.g., a macro base station), may include an eNB, a gNodeB (gNB), or other types of base stations. Some base stations 105 (such as gNBs) may operate in traditional sub-6 GHz spectrum, millimeter wave (mmW) frequencies, and / or near mmW frequencies to communicate with UE 110. When a gNB (such as base station 105) operates at mmW or near mmW frequencies, base station 105 may be referred to as a mmW base station. Extremely high frequency (EHF) is part of the radio frequency (RF) in the electromagnetic spectrum. EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 mm and 10 mm. Radio waves in the frequency band may be referred to as millimeter waves. Near mmW may extend down to a frequency of 3 GHz and a wavelength of 100 mm. Super high frequency (SHF) bands extend between 3 GHz and 30 GHz and may also be referred to as centimeter waves. Communications using mmW and / or near mmW radio frequency bands have extremely high path loss and short distances. The mmW base stations 105 may utilize beamforming in their transmissions with the UEs 110 to compensate for the extremely high path loss and short range.

[0059] In a non-limiting example, the EPC 180 may include a mobility management entity (MME) 181, other MMEs 182, a serving gateway 183, a multimedia broadcast multicast service (MBMS) gateway 184, a broadcast multicast service center (BM-SC) 185, and a packet data network (PDN) gateway 186. The MME 181 may communicate with a home subscriber server (HSS) 187. The MME 181 is a control node that handles signaling between the UE 110 and the EPC 180. Typically, the MME 181 provides bearer and connection management. All user Internet Protocol (IP) packets are delivered through the serving gateway 183, which itself is connected to the PDN gateway 186. The PDN gateway 186 provides UE IP address allocation and other functions. The PDN gateway 186 and the BM-SC 185 are connected to IP services 188. The IP services 188 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services. The BM-SC 185 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 185 may serve as an entry point for content provider MBMS transmissions, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and may be used to schedule MBMS transmissions. The MBMS Gateway 184 may be used to allocate MBMS services to base stations 105 belonging to a multicast broadcast single frequency network (MBSFN) area that broadcasts a specific service, and may be responsible for session management (start / stop) and collecting eMBMS-related billing information.

[0060] 5GC 190 may include an access and mobility management function (AMF) 192, other AMFs 193, a session management function (SMF) 194, and a user plane function (UPF) 195. AMF 192 may communicate with unified data management (UDM) 196. AMF 192 is a control node that handles signaling between UE 110 and 5GC 190. Typically, AMF 192 provides QoS processes and session management. All user Internet Protocol (IP) packets are delivered through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 is connected to IP services 197. IP services 197 may include the Internet, an intranet, an IP multimedia subsystem (IMS), a PS streaming service, and / or other IP services.

[0061] See also Figure 2, an example of an implementation of the UE 110 may include a variety of components, some of which have been described above, but include components such as one or more processors 212 and memory 216 communicating via one or more buses 244 and transceiver 202, which may operate in conjunction with the modem 140, the communication component 150, and / or the BFD component 152 to implement one or more functions described herein related to communication with the base station 105. In addition, the one or more processors 212, the modem 140, the memory 216, the transceiver 202, the RF front end 288, and the one or more antennas 265 may be configured to support voice and / or data calls (simultaneously or non-simultaneously) in one or more radio access technologies. The one or more antennas 265 may include independent antennas and / or antenna arrays.

[0062] In one aspect, the one or more processors 212 may include a modem 140 using one or more modem processors. Various functions associated with the communication component 150 and the BFD component 152 may be included in the modem 140 and / or the processor 212, and in one aspect, may be performed by a single processor, while in other aspects, different functions may be performed by a combination of two or more different processors. For example, in one aspect, the one or more processors 212 may include any one or any combination of a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiver processor, or a transceiver processor associated with the transceiver 202. In addition, the modem 140 may configure the UE 110 together with the BFD component 152 and the processor 212. In other aspects, some functions of the one or more processors 212 and / or the modem 140 associated with the communication component 150 may be performed by the transceiver 202.

[0063] In addition, the memory 216 can be configured to store local versions of the data and / or applications 275 used herein, or the communication component 150 and / or one or more subcomponents of the communication component 150 are executed by the at least one processor 212. The memory 216 may include any type of computer-readable medium usable by a computer or at least one processor 212, such as random access memory (RAM), read-only memory (ROM), tape, disk, optical disk, volatile memory, non-volatile memory, and any combination thereof. In one aspect, for example, the memory 216 may be a non-transitory computer-readable storage medium that stores one or more computer-executable codes and / or data associated therewith that define the communication component 150 and / or one or more of its subcomponents when the UE 110 operates at least one processor 212 to execute the communication component 150 and the BFD component 152 and / or one or more of their subcomponents.

[0064] The transceiver 202 may include at least one receiver 206 and at least one transmitter 208. The receiver 206 may include hardware, firmware, and / or software code executable by a processor for receiving data, the code including instructions and stored in a memory (e.g., a computer-readable medium). The receiver 206 may be, for example, a radio frequency (RF) receiver. In one aspect, the receiver 206 may receive signals transmitted by at least one base station 105. The transmitter 208 may include hardware, firmware, and / or software code executable by a processor for transmitting data, the code including instructions and stored in a memory (e.g., a computer-readable medium). Suitable examples of the transmitter 208 may include, but are not limited to, an RF transmitter.

[0065] In addition, in an aspect, the UE 110 may include an RF front end 288 that may be operable to communicate with the one or more antennas 265 and the transceiver 202 for receiving and transmitting radio transmissions, such as wireless communications transmitted by at least one base station 105 or wireless transmissions transmitted by the UE 110. The RF front end 288 may be coupled to the one or more antennas 265 and may include one or more low noise amplifiers (LNAs) 290, one or more switches 292, one or more power amplifiers (PAs) 298, and one or more filters 296 for transmitting and receiving RF signals.

[0066] In one aspect, the LNA 290 can amplify the received signal at a desired output level. In one aspect, each LNA 290 can have a specified minimum and maximum gain value. In one aspect, the RF front end 288 can use one or more switches 292 to select a particular LNA 290 and a specified gain value based on a desired gain value for a particular application.

[0067] In addition, for example, the RF front end 288 can use one or more PAs 298 to amplify the signal of the RF output at a desired output power level. In one aspect, each PA 298 can have a specified minimum and maximum gain value. In one aspect, the RF front end 288 can use one or more switches 292 to select a specific PA 298 and a specified gain value based on the desired gain value for a particular application.

[0068] In addition, for example, the RF front end 288 can use one or more filters 296 to filter the received signal to obtain an input RF signal. Similarly, in one aspect, for example, the output from the corresponding PA 298 can be filtered using a corresponding filter 296 to produce an output signal for transmission. In one aspect, each filter 296 can be coupled to a specific LNA 290 and / or PA 298. In one aspect, the RF front end 288 can use one or more switches 292 to select a transmit or receive path using a specified filter 296, LNA 290, and / or PA 298 based on a configuration specified by the transceiver 202 and / or the processor 212.

[0069] As such, the transceiver 202 may be configured to transmit and receive wireless signals via the RF front end 288 through the one or more antennas 265. In one aspect, the transceiver may be tuned to operate at a specified frequency so that the UE 110 may communicate with, for example, one or more base stations 105 or one or more cells associated with the one or more base stations 105. In one aspect, the modem 140 may configure the transceiver 202 to operate at a specified frequency and power level based on, for example, a UE configuration of the UE 110 and a communication protocol used by the modem 140.

[0070] In one aspect, the modem 140 can be a multi-band multi-mode modem that can process digital data and communicate with the transceiver 202 so that the digital data is transmitted and received using the transceiver 202. In one aspect, the modem 140 can be multi-band and configured to support multiple frequency bands of a specific communication protocol. In one aspect, the modem 140 can be multi-mode and configured to support multiple operating networks and communication protocols. In one aspect, the modem 140 can control one or more components (e.g., RF front end 288, transceiver 202) of the UE 110 to enable the transmission and / or reception of signals from the network based on a specified modem configuration. In one aspect, the modem configuration can be based on the mode of the modem and the frequency band in use. In another aspect, the modem configuration can be based on UE configuration information associated with the UE 110 provided by the network.

[0071] See also Figure 3, an example of an implementation may include a variety of components, some of which have been described above, but include components such as one or more processors 312 and memory 316 communicating via one or more buses 344 and transceiver 302, which can operate in conjunction with modem 160 and communication component 170 to implement one or more functions described herein related to communication with UE 110. In addition, one or more processors 312, modem 160, memory 316, transceiver 302, RF front end 388 and one or more antennas 365 can be configured to support voice and / or data calls (simultaneously or non-simultaneously) in one or more radio access technologies. One or more antennas 365 may include independent antennas and / or antenna arrays.

[0072] In one aspect, the one or more processors 312 may include a modem 160 using one or more modem processors. Various functions associated with the communication component 170 may be included in the modem 160 and / or the processor 312, and in one aspect, may be performed by a single processor, while in other aspects, different functions may be performed by a combination of two or more different processors. For example, in one aspect, the one or more processors 312 may include any one or any combination of a modem processor, or a baseband processor, or a digital signal processor, or a transmit processor, or a receiver processor, or a transceiver processor associated with the transceiver 302. In addition, the modem 160 may configure the base station 105 and the processor 312. In other aspects, some features of the one or more processors 312 and / or the modem 160 associated with the communication component 170 may be performed by the transceiver 302.

[0073] In addition, the memory 316 can be configured to store local versions of data and / or applications 375 used herein, or the communication component 160 and / or one or more subcomponents of the communication component 160 are executed by the at least one processor 312. The memory 316 can include any type of computer-readable medium usable by a computer or at least one processor 312, such as random access memory (RAM), read-only memory (ROM), tape, disk, optical disk, volatile memory, non-volatile memory, and any combination thereof. In one aspect, for example, the memory 316 can be a non-transitory computer-readable storage medium that stores one or more computer-executable codes that define the communication component 170 and / or one or more of its subcomponents when the base station 105 operates the at least one processor 312 to execute one or more of the communication component 170 and subcomponents.

[0074] The transceiver 302 may include at least one receiver 306 and at least one transmitter 308. The at least one receiver 306 may include hardware, firmware, and / or software code executable by a processor for receiving data, the code including instructions and stored in a memory (e.g., a computer-readable medium). The receiver 306 may be, for example, a radio frequency (RF) receiver. In an aspect, the receiver 306 may receive a signal transmitted by the UE 110. The transmitter 308 may include hardware, firmware, and / or software code executable by a processor for transmitting data, the code including instructions and stored in a memory (e.g., a computer-readable medium). Suitable examples of the transmitter 308 may include, but are not limited to, an RF transmitter.

[0075] In addition, in an aspect, the base station 105 can include an RF front end 388 that can be operatively in communication with the one or more antennas 365 and the transceiver 302 for receiving and transmitting radio transmissions, such as wireless communications transmitted by other base stations 105 or wireless transmissions transmitted by the UE 110. The RF front end 388 can be coupled to the one or more antennas 365 and can include one or more low noise amplifiers (LNAs) 390, one or more switches 392, one or more power amplifiers (PAs) 398, and one or more filters 396 for transmitting and receiving RF signals.

[0076] In one aspect, the LNA 390 can amplify the received signal at a desired output level. In one aspect, each LNA 390 can have a specified minimum and maximum gain value. In one aspect, the RF front end 388 can use one or more switches 392 to select a particular LNA 390 and a specified gain value based on a desired gain value for a particular application.

[0077] In addition, for example, the RF front end 388 can use one or more PAs 398 to amplify the signal of the RF output at a desired output power level. In one aspect, each PA 398 can have a specified minimum and maximum gain value. In one aspect, the RF front end 388 can use one or more switches 392 to select a specific PA 398 and a specified gain value based on the desired gain value for a particular application.

[0078] In addition, for example, the RF front end 388 can use one or more filters 396 to filter the received signal to obtain an input RF signal. Similarly, in one aspect, for example, the output from the corresponding PA 398 can be filtered using a corresponding filter 396 to produce an output signal for transmission. In one aspect, each filter 396 can be coupled to a specific LNA 390 and / or PA 398. In one aspect, the RF front end 388 can use one or more switches 392 to select a transmit or receive path using a specified filter 396, LNA 390, and / or PA 398 based on a configuration specified by the transceiver 302 and / or the processor 312.

[0079] As such, the transceiver 302 can be configured to transmit and receive wireless signals via the RF front end 388 through the one or more antennas 365. In one aspect, the transceiver can be tuned to operate at a specified frequency so that the base station 105 can communicate with, for example, the UE 110 or one or more cells associated with one or more base stations 105. In one aspect, the modem 160 can configure the transceiver 302 to operate at a specified frequency and power level based on, for example, the base station configuration of the base station 105 and the communication protocol used by the modem 160.

[0080] In one aspect, modem 160 can be a multi-band multi-mode modem that can process digital data and communicate with transceiver 302 so that digital data is sent and received using transceiver 302. In one aspect, modem 160 can be multi-band and configured to support multiple frequency bands of a specific communication protocol. In one aspect, modem 160 can be multi-mode and configured to support multiple operating networks and communication protocols. In one aspect, modem 160 can control one or more components (e.g., RF front end 388, transceiver 302) of base station 105 to enable transmission and / or reception of signals from the network based on a specified modem configuration. In one aspect, modem configuration can be based on the mode of the modem and the frequency band in use. In another aspect, modem configuration can be based on a base station configuration associated with base station 105.

[0081] Now turn Figure 4 , UE 110 can perform an example of method 400 of wireless communication, including using a reference signal indicated in a control resource set for beam failure detection.

[0082] At block 402, the method 400 may perform a step of receiving a beam failure detection reference signal configuration. For example, the communication component 150 of the UE 110 may receive a beam failure detection reference signal configuration transmitted by the communication component 170 of the base station 105. One or more antennas 265 of the UE 110 may receive an electromagnetic signal associated with the beam failure detection reference signal configuration. The RF front end 288 of the UE 110 may filter, amplify, and / or extract an electrical signal carried by the electromagnetic signal. The transceiver 202 or the receiver 206 of the UE 110 may digitize and convert the electrical signal into data, such as the beam failure detection reference signal configuration, and transmit it to the communication component 222 of the UE 110.

[0083] At block 404, method 400 may perform a step of detecting the absence of configured and quasi-co-located BFD RSs in at least one monitored set of control resources. For example, BFD component 152 of UE 110 may detect the absence of configured and quasi-co-located BFD RSs in at least one monitored set of control resources.

[0084] In some implementations, at least one monitored set of control resources may be configured by one or more MAC CEs.

[0085] In some implementations, detecting the absence may include detecting configuration and incomplete configuration of the quasi-co-located BFD RS. The incomplete configuration may indicate that configuration of the quasi-co-located BFD RS has not been initiated or has not been completed.

[0086] In some implementations, the incomplete configuration may be caused by RRC configuration latency.UE 110 may receive at least one MAC CE and configure at least one monitored CORESET or configure and quasi-co-located BFD RS to reduce the RRC configuration latency.

[0087] In some embodiments, configuring at least one monitored CORESET or configuring and quasi-co-located BFD RS may include configuring at least one monitored CORESET or configuring and quasi-co-located BFD RS in the same frame or different frames close in time. Non-limiting examples of different frames close in time may include frames that are 1 microsecond (μs), 5μs, 10μs, 50μs, 100μs, 500μs, or 1 millisecond (ms) apart in time.

[0088] In some implementations, detecting the absence may include determining that the number of at least one monitored CORESETs is greater than the number of BFD RSs. For example, the UE 1109 may detect the absence by determining that there are three monitored CORESETs and two configured BFDRSs.

[0089] At block 406, method 400 may perform the step of utilizing one or more reference signals indicated in the CORESET transmission configuration indicator state for beam failure detection. For example, communication component 150 and / or BFD component 152 of UE 110 may utilize the reference signals indicated in the CORESET transmission configuration indicator state for beam failure detection. In some examples, UE 110 may utilize one or more RSs in the CORESET transmission configuration indicator state for beam failure detection by evaluating the quality of the RSs (e.g., signal strength, signal-to-noise-plus-interference ratio, signal-to-noise ratio, bit error rate, block error rate, etc.). If the RS quality drops below a predetermined threshold, UE 110 may determine that a beam failure has occurred. For example, if the signal-to-noise-plus-interference ratio of one or more RSs in the CORESET is 0.5 dB and the predetermined threshold is 1 dB, UE 110 may determine that a beam failure event has occurred.

[0090] Now turn Figure 5 , UE 110 can perform an example of method 500 of wireless communication, including using a demodulation reference signal of a control resource set for beam failure detection.

[0091] At block 502, the method 500 may perform a step of receiving a BFD RS configuration. For example, the communication component 150 of the UE 110 may receive the BFD RS configuration transmitted by the communication component 170 of the base station 105. The one or more antennas 265 of the UE 110 may receive an electromagnetic signal associated with a beam failure detection reference signal configuration. The RF front end 288 of the UE 110 may filter, amplify, and / or extract an electrical signal carried by the electromagnetic signal. The transceiver 202 or the receiver 206 of the UE 110 may digitize and convert the electrical signal into data, such as a beam failure detection reference signal configuration, and transmit it to the communication component 222 of the UE 110.

[0092] At block 504, method 500 may perform a step of detecting that a configured and quasi-co-located BFD RS is absent in at least one monitored CORESET. For example, BFD component 152 of UE 110 may detect that a configured and quasi-co-located BFD RS is absent in at least one monitored CORESET.

[0093] In some implementations, at least one monitored set of control resources may be configured by one or more MAC CEs.

[0094] In some implementations, detecting the absence may include detecting configuration and incomplete configuration of the quasi-co-located BFD RS. The incomplete configuration may indicate that configuration of the quasi-co-located BFD RS has not been initiated or has not been completed.

[0095] In some implementations, the incomplete configuration may be caused by RRC configuration latency.UE 110 may receive at least one MAC CE and configure at least one monitored CORESET or configure and quasi-co-located BFD RS to reduce the RRC configuration latency.

[0096] In some embodiments, configuring at least one monitored CORESET or configuring and quasi-co-located BFD RS may include configuring at least one monitored CORESET or configuring and quasi-co-located BFD RS in the same frame or different frames close in time. Non-limiting examples of different frames close in time may include frames that are 1 microsecond (μs), 5μs, 10μs, 50μs, 100μs, 500μs, or 1 millisecond (ms) apart in time.

[0097] In some implementations, detecting the absence may include determining that the number of at least one monitored CORESETs is greater than the number of BFD RSs. For example, the UE 1109 may detect the absence by determining that there are three monitored CORESETs and two configured BFDRSs.

[0098] At block 506, the method 500 may perform a step of utilizing a demodulation reference signal of at least one monitored CORESET or decoding statistics of a PDCCH carried by at least one monitored CORESET to evaluate CORESET quality for beam failure detection. For example, the BFD component 152 of the UE 110 may utilize a demodulation reference signal of at least one monitored CORESET or decoding statistics of a PDCCH carried by at least one monitored CORESET to evaluate CORESET quality for beam failure detection.

[0099] Now turn Figure 6 , UE 110 may perform an example of method 600 of wireless communication, including performing beam failure detection using the configured and quasi-co-located beam failure detection reference signal.

[0100] At block 602, the method 600 may perform a step of receiving a BFD RS configuration. For example, the communication component 150 of the UE 110 may receive the BFD RS configuration transmitted by the communication component 170 of the base station 105. The one or more antennas 265 of the UE 110 may receive an electromagnetic signal associated with a beam failure detection reference signal configuration. The RF front end 288 of the UE 110 may filter, amplify, and / or extract an electrical signal carried by the electromagnetic signal. The transceiver 202 or the receiver 206 of the UE 110 may digitize and convert the electrical signal into data, such as a beam failure detection reference signal configuration, and transmit it to the communication component 222 of the UE 110.

[0101] At block 604, method 600 may perform the step of waiting until configuration of the corresponding quasi co-located BFD RS is completed. For example, BFD component 152 of UE 110 may wait until configuration of the corresponding quasi co-located BFD RS is completed.

[0102] In some embodiments, UE 110 may perform the step of configuring at least one monitored CORESET or a corresponding quasi-co-located BFD RS using one or more medium access control (MAC) control elements (CEs) before utilizing the corresponding quasi-co-located BFD RS. In some embodiments, configuring at least one monitored CORESET or a corresponding quasi-co-located BFD RS may include configuring at least one monitored CORESET or a corresponding quasi-co-located BFD RS in the same frame or in different frames that are close in time. Non-limiting examples of different frames that are close in time may include frames that are 1 microsecond (μs), 5μs, 10μs, 50μs, 100μs, 500μs, or 1 millisecond (ms) apart in time.

[0103] At block 606, method 600 may perform the step of utilizing the configured and quasi-co-located BFD RS for beam failure detection. For example, BFD component 152 of UE 110 may utilize the configured and quasi-co-located BFD RS for beam failure detection.

[0104] In an optional embodiment, UE 110 may configure the CORESET and the corresponding quasi-co-located BFD RS through one or more MAC CEs before utilizing the configured and quasi-co-located BFD RS. For example, BFD component 152 of UE 110 may configure the CORESET and the corresponding quasi-co-located BFD RS through one or more MAC CEs to reduce the waiting time associated with RRC configuration and / or reconfiguration operations.

[0105] The detailed description set forth above in conjunction with the accompanying drawings describes examples and does not represent the only example that can be implemented or within the scope of the claims. When used in the specification, the term "example" means "used as an example, instance or illustration", rather than "preferred" or "better than other examples". In order to provide an understanding of the described technology, the detailed description includes specific details. However, these technologies can be practiced without these specific details. For example, without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed can be changed. In addition, various examples can appropriately omit, replace or add various programs or components. For example, the described method can be performed in a different order than described, and various steps can be added, omitted or combined. In addition, the features described in some examples can be combined in other examples. In some cases, well-known structures and devices are shown in block diagram form to avoid blurring the concepts of the described examples.

[0106] It should be noted that the techniques described herein can be used for various wireless communication networks, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other systems. The terms "system" and "network" are usually used interchangeably. A CDMA system can implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-2000, IS-95 and IS-856 standards. IS-2000 versions 0 and A are usually referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is usually referred to as CDMA2000 1xEV-DO, High Speed ​​Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. A TDMA system can implement radio technologies such as Global System for Mobile Communications (GSM). An OFDMA system may implement a radio technology such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM TMEtc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP LTE and LTE-Advanced (LTE-A) are new versions of UMTS using E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein can be used for the systems and radio technologies mentioned above and other systems and radio technologies, including cellular (e.g., LTE) communications on shared radio spectrum bands. However, this article describes LTE / LTE-A and / or 5G systems for example purposes, and LTE terminology is used in most of the following descriptions, although these techniques may be applicable to other next generation communication systems.

[0107] Any of a variety of different techniques and technologies may be used to represent information and signals. For example, the data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced in the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, computer executable codes or instructions stored on a computer-readable medium, or any combination thereof.

[0108] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or executed with a specially programmed device, such as, but not limited to, a processor, a digital signal processor (DSP), an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The specially programmed processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The specially programmed processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0109] The functions described herein may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software executed by a processor, the function may be stored as one or more instructions or codes on or transmitted by a non-transitory computer-readable medium. Other examples and embodiments are within the scope and spirit of the present disclosure and the appended claims. For example, due to the nature of software, the above functions may be implemented using software, hardware, firmware, hard wiring, or any combination of these executed by a specially programmed processor. The features of the implementation functions may also be physically located in different locations, including being distributed so that some functions are implemented in different physical locations. In addition, as used herein, including in the claims, "or" when used in a list of items beginning with "at least one" indicates a discontinuous list, such that, for example, a list of "at least one A, B, or C" means A or B or C or AB or AC or BC or ABC (i.e., A and B and C).

[0110] Computer-readable media include both computer storage media and communication media, including any media that helps to transfer a computer program from one place to another. Storage media can be any available media that can be accessed by a general or special-purpose computer. For example, and without limitation, computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage devices, magnetic disk storage devices, or other magnetic storage devices, or any other media that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a general or special-purpose computer or a general or special-purpose processor. And, any connection is appropriately referred to as a computer-readable medium. For example, if a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwaves are used to send software from a website, server or other remote source, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwaves are included in the definition of medium. As used herein, disk and disc include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc, where disks usually reproduce data magnetically, while discs reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0111] The previous description of the present disclosure is provided to enable those skilled in the art to make or use the present disclosure. It will be readily apparent to those skilled in the art that various modifications to the present disclosure will be apparent, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of the present disclosure. In addition, although the elements of the described aspects may be described or claimed in the singular, unless a limitation to the singular is explicitly stated, the plural is also contemplated. In addition, all or a portion of any aspect may be used together with all or a portion of any other aspect, unless otherwise stated. Therefore, the present disclosure is not limited to the examples and designs described herein, but conforms to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wireless communication method for beam fault detection, comprising: Receive beam fault detection BFD reference signal RS configuration; Receiving at least one medium access control element MAC CE; configuring the configured and quasi-co-located BFD RS based on the received at least one MAC CE; and The configured and quasi-co-located BFD RS is used to perform beam failure detection.

2. The method of claim 1, wherein at least one monitored CORESET is configured by one or more MAC CEs.

3. The method according to claim 1 further includes detecting the absence of the configured and quasi-co-located BFD RS in at least one monitored CORESET, wherein detecting the absence includes detecting an incomplete configuration of the configured and quasi-co-located BFD RS, and the incomplete configuration indicates that the configuration of the configured and quasi-co-located BFD RS has not been started or has not been completed.

4. The method according to claim 3, wherein: The incomplete configuration is caused by Radio Resource Control (RRC) configuration latency.

5. The method according to claim 1, wherein: Configuring the configured and quasi-co-located BFD RSs includes configuring the configured and quasi-co-located BFD RSs in the same frame or in different frames.

6. A user equipment, comprising: Memory; Transceiver; One or more processors operably coupled to the memory and the transceiver, the one or more processors configured to perform the following steps: Receiving a beam failure detection (BFD) reference signal (RS) configuration via the transceiver; Receiving at least one medium access control element MAC CE; configuring the configured and quasi-co-located BFD RS based on the received at least one MAC CE; and The configured and quasi-co-located BFD RS is used to perform beam failure detection.

7. The user equipment according to claim 6, wherein at least one monitored CORESET is configured by one or more MAC CEs.

8. The user equipment according to claim 6, wherein the one or more processors are further configured to perform the following steps: detecting the absence of the configured and quasi-co-located BFD RS in at least one monitored CORESET, wherein detecting the absence includes detecting an incomplete configuration of the configured and quasi-co-located BFD RS, and the incomplete configuration indicates that the configuration of the configured and quasi-co-located BFD RS has not been started or has not been completed.

9. The user equipment according to claim 8, wherein: The incomplete configuration is caused by the Radio Resource Control RRC configuration latency. 10 . The user equipment according to claim 6 , configuring the configured and quasi-co-located BFD RSs comprises configuring the configured and quasi-co-located BFD RSs in a same frame or in different frames.

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