Beam Failure Detection and Recovery for High-Priority or Broadcast CORESET

Abstract

Wireless communication is discussed, which includes beam failure detection and recovery for high-priority or broadcast CORESETs performed in a wireless communication system to achieve an overall improvement in wireless communication. In some aspects, a mobile device may monitor one or more first reference signals associated with wireless communication performed using one or more first receiving beams. The mobile device may also monitor one or more second reference signals associated with wireless communication performed using one or more second receiving beams. The mobile device may detect a failure in wireless communication performed using one or more first receiving beams based at least in part on the monitoring of the one or more first reference signals. The mobile device may also initiate a beam failure recovery process for the one or more first receiving beams when a failure in wireless communication performed using one or more first receiving beams is detected.

Description

[0001] Cross - Reference to Related Applications

[0002] This application claims the benefit and priority of U.S. Patent Application No. 16 / 952,946, entitled "BEAM FAILURE DETECTION AND RECOVERY FOR HIGH PRIORITY OR BROADCAST CORESET", filed on November 19, 2020, and U.S. Provisional Patent Application No. 62 / 940,678, entitled "BEAM FAILURE DETECTION AND RECOVERY FOR HIGH PRIORITY OR BROADCAST CORESET", filed on November 26, 2019, the entire contents of which are hereby expressly incorporated by reference herein as if fully set forth below and for all applicable purposes. Technical Field

[0003] Aspects of the present disclosure generally relate to wireless communication systems, and more particularly, to beam failure detection and recovery for high - priority or broadcast CORESET in a wireless communication system to achieve overall improvement in wireless communication. Certain aspects of the techniques discussed below can implement and provide enhanced communication features and techniques for a communication system, including higher data rates, higher capacity, better spectral efficiency, lower latency, higher reliability, greater coverage, and lower device power. Background Art

[0004] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcasting, and so on. These wireless networks can be multi - access networks that support multiple users by sharing available network resources. Such a network (which is typically a multi - access network) supports communication for multiple users by sharing available network resources. An example of such a network is the Universal Terrestrial Radio Access Network (UTRAN). The UTRAN is defined as the radio access network (RAN) of the Universal Mobile Telecommunications System (UMTS), which is a third - generation (3G) mobile phone technology supported by the Third Generation Partnership Project (3GPP). Examples of multi - access network formats include Code Division Multiple Access (CDMA) networks, Time Division Multiple Access (TDMA) networks, Frequency Division Multiple Access (FDMA) networks, Orthogonal FDMA (OFDMA) networks, and Single - Carrier FDMA (SC - FDMA) networks.

[0005] A wireless communication network may include multiple base stations or Node Bs capable of supporting communication for multiple user equipments (UEs). The UEs may communicate with the base stations via a downlink and an uplink. The downlink (or forward link) refers to the communication link from the base station to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the base station.

[0006] The base station may send data and control information to the UE on the downlink, and / or may receive data and control information from the UE on the uplink. On the downlink, transmissions from the base station may encounter interference caused by transmissions from neighboring base stations or from other radio frequency (RF) transmitters. On the uplink, transmissions from the UE may encounter interference from other UEs communicating with neighboring base stations or from uplink transmissions of other radio RF transmitters. Such interference may degrade the performance on both the downlink and the uplink.

[0007] As the demand for mobile broadband access continues to increase, the more UEs accessing a long-distance wireless communication network, and the more short-distance wireless systems deployed in a community, the more likely the network is to experience interference and congestion. Research and development continue to enhance wireless technologies not only to meet the growing demand for mobile broadband access, but also to improve and enhance the user experience of mobile communication. Summary of the Invention

[0008] Certain aspects of the present disclosure are summarized below to provide a basic understanding of the discussed technology. This Summary of the Invention is not an extensive overview of all the expected features of the present disclosure, and is neither intended to identify the key or important elements of all aspects of the present disclosure, nor to define the scope of any or all aspects of the present disclosure. Its sole purpose is to present some concepts of one or more aspects of the present disclosure in a summary form as a prelude to the more detailed description presented later.

[0009] In one aspect of the present disclosure, a wireless communication method is disclosed. For example, the method may include a processor monitoring one or more first reference signals associated with wireless communication performed using one or more first receiving beams. The method may further include the processor monitoring one or more second reference signals associated with wireless communication performed using one or more second receiving beams. The method may further include the processor detecting a fault in the wireless communication performed using the one or more first receiving beams at least partially based on the monitoring of the one or more first reference signals. The method may further include the processor initiating a beam failure recovery process for the one or more first receiving beams when a fault in the wireless communication performed using the one or more first receiving beams is detected.

[0010] In an additional aspect of the present disclosure, a device configured to perform wireless communication is disclosed. For example, the device may include units for monitoring one or more first reference signals associated with wireless communication performed using one or more first receiving beams. The device may also include units for monitoring one or more second reference signals associated with wireless communication performed using one or more second receiving beams. The device may further include units for detecting a fault in wireless communication performed using the one or more first receiving beams, at least in part based on the monitoring of the one or more first reference signals. The device may further include units for initiating a beam fault recovery process for the one or more first receiving beams when a fault in wireless communication performed using the one or more first receiving beams is detected.

[0011] In an additional aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon. The program code may include program code executable by a computer to cause the computer to monitor one or more first reference signals associated with wireless communication performed using one or more first receiving beams. The program code may also include program code executable by a computer to cause the computer to monitor one or more second reference signals associated with wireless communication performed using one or more second receiving beams. The program code may further include program code executable by a computer to cause the computer to detect a fault in wireless communication performed using the one or more first receiving beams, at least in part based on the monitoring of the one or more first reference signals. The program code may further include program code executable by a computer to cause the computer to initiate a beam fault recovery process for the one or more first receiving beams when a fault in wireless communication performed using the one or more first receiving beams is detected.

[0012] In an additional aspect of the present disclosure, a device configured to perform wireless communication is disclosed. The device includes at least one processor and a memory coupled to the processor. The processor may be configured to monitor one or more first reference signals associated with wireless communication performed using one or more first receiving beams. The processor may also be configured to monitor one or more second reference signals associated with wireless communication performed using one or more second receiving beams. The processor may further be configured to detect a fault in wireless communication performed using the one or more first receiving beams, at least in part based on the monitoring of the one or more first reference signals. The processor may further be configured to initiate a beam fault recovery process for the one or more first receiving beams when a fault in wireless communication performed using the one or more first receiving beams is detected.

[0013] In one aspect of the present disclosure, a wireless communication method is disclosed. For example, the method may include a processor receiving, from a mobile device, a first indication of a failure in wireless communication performed using one or more first receiving beams. The method may further include the processor receiving, from the mobile device, a second indication different from the first indication of a failure in wireless communication performed using one or more second receiving beams.

[0014] In an additional aspect of the present disclosure, a device configured for wireless communication is disclosed. For example, the device may include means for receiving, from a mobile device, a first indication of a failure in wireless communication performed using one or more first receiving beams. The device may further include means for receiving, from the mobile device, a second indication different from the first indication of a failure in wireless communication performed using one or more second receiving beams.

[0015] In an additional aspect of the present disclosure, a non-transitory computer-readable medium having program code recorded thereon. The program code may include program code executable by a computer to cause the computer to receive, from a mobile device, a first indication of a failure in wireless communication performed using one or more first receiving beams. The program code may further include program code executable by a computer to cause the computer to receive, from the mobile device, a second indication different from the first indication of a failure in wireless communication performed using one or more second receiving beams.

[0016] In an additional aspect of the present disclosure, a device configured for wireless communication is disclosed. The device includes at least one processor and a memory coupled to the processor. The processor may be configured to receive, from a mobile device, a first indication of a failure in wireless communication performed using one or more first receiving beams. The processor may further be configured to receive, from the mobile device, a second indication different from the first indication of a failure in wireless communication performed using one or more second receiving beams.

[0017] To better understand the following detailed description, the features and technical advantages of examples in accordance with the present disclosure have been fairly broadly summarized above. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be readily used as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics (both their organization and method of operation) of the concepts disclosed herein, as well as associated advantages, will be better understood from the following description. Each of the accompanying drawings is provided for purposes of illustration and description and is not intended as a definition of the limits of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] A further understanding of the nature and advantages of the present disclosure can be realized by referring to the accompanying drawings below. In the drawings, similar components or features may have the same reference numerals. In addition, each of the same type of components may be distinguished by adding a second label for distinguishing similar components after the reference numeral. If only the first reference numeral is used in the specification, the description applies to any one of the similar components having the same first reference numeral, regardless of the second reference numeral.

[0019] Figure 1 is a block diagram showing details of a wireless communication system.

[0020] Figure 2 is a block diagram showing the design of a base station and a UE configured according to an aspect of the present disclosure.

[0021] Figure 3 is a block diagram showing a wireless communication system including a base station using directional radio beams.

[0022] Figure 4 is a diagram showing an example of wireless communication performed in a wireless communication system according to certain aspects of the present disclosure.

[0023] Figure 5 shows a diagram showing an example of channel resource allocation for a CORESET according to certain aspects of the present disclosure.

[0024] Figure 6 is a block diagram showing a method for performing beam failure detection and recovery for a high-priority or broadcast CORESET in a wireless communication system according to certain aspects of the present disclosure.

[0025] Figure 7A is a diagram showing an example of BFD and BFR performed in a wireless communication system according to certain aspects of the present disclosure.

[0026] Figure 7B is another diagram showing an example of BFD and BFR performed in a wireless communication system according to certain aspects of the present disclosure.

[0027] Figure 8 is a block diagram showing a method for performing beam failure detection and recovery for a high-priority or broadcast CORESET in a wireless communication system according to certain aspects of the present disclosure. Detailed Description

[0028] The following detailed description in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to limit the scope of the present disclosure. On the contrary, to provide a thorough understanding of the subject matter of the present invention, the detailed description includes specific details. It will be apparent to those skilled in the art that these specific details are not required in every case, and in some instances, well-known structures and components are shown in block diagram form for clarity of presentation.

[0029] The present disclosure generally relates to providing or participating in authorized shared access between two or more wireless communication systems, which are also referred to as wireless communication networks. In various embodiments, techniques and apparatus may be used in wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single-carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, fifth-generation (5G) or new radio (NR) networks, and other communication networks. As described herein, the terms "network" and "system" are often used interchangeably.

[0030] OFDMA networks may implement wireless technologies such as evolved UTRA (E-UTRA), IEEE 802.11, IEEE 802.16, IEEE 802.20, Flash-OFDM, and the like. UTRA, E-UTRA, and Global System for Mobile Communications (GSM) are part of the Universal Mobile Telecommunications System (UMTS). Specifically, Long-Term Evolution (LTE) is a version of UMTS that employs E-UTRA. UTRA, E-UTRA, GSM, UMTS, and LTE are described in documents provided by an organization named "Third Generation Partnership Project" (3GPP), and CDMA2000 is described in documents from an organization named "Third Generation Partnership Project 2" (3GPP2). These various wireless technologies and standards are known or are under development. For example, the Third Generation Partnership Project (3GPP) is a collaboration among telecommunication union groups aimed at specifying globally applicable third-generation (3G) mobile phone specifications. 3GPP Long-Term Evolution (LTE) is a 3GPP plan aimed at improving the Universal Mobile Telecommunications System (UMTS) mobile phone standard. 3GPP may specify specifications for next-generation mobile networks, mobile systems, and mobile devices. The present disclosure focuses on the development of wireless technologies from LTE, 4G, 5G, NR, and beyond, having a collection of new and different radio access technologies or radio air interfaces to share access to the radio spectrum between networks.

[0031] Specifically, 5G networks are expected to enable various deployments, various spectrums, and various services and devices implemented using an OFDM-based unified air interface. To achieve these goals, in addition to the development of new radio technologies for 5G NR networks, further enhancements to LTE and LTE-A are also considered. 5G NR will be able to scale to provide the following coverage: (1) Massive Internet of Things (IoT) with ultra-high density (e.g., ~1M nodes / km 2 ), ultra-low complexity (e.g., ~a few 10 bits / second), ultra-low energy (e.g., ~10-year+ battery life), and deep coverage with the ability to reach challenging locations; (2) Critical mission control including strong security to protect sensitive personal, financial, or confidential information; ultra-high reliability (e.g., ~99.9999% reliability); ultra-low latency (e.g., ~1ms); and users with a wide range of mobility or lack of mobility; and (3) Enhanced mobile broadband, which includes extremely high capacity (e.g., ~10 Tbps / km 2 ), extreme data rates (e.g., multi-Gbps rates, 100+ Mbps user experience rate), and improved discovery and optimized depth perception.

[0032] 5G NR can be implemented as an optimized OFDM-based waveform with the following: a scalable digital scheme and transmission time interval (TTI); a common, flexible framework to efficiently multiplex services and features using a dynamic, low-latency time division duplex (TDD) / frequency division duplex (FDD) design; and improved radio technologies such as massive multiple input multiple output (MIMO), robust millimeter wave (mmWave) transmission, improved channel coding, and device-centric mobility. The scalability of the digital scheme in 5G NR, by leveraging the scaling of subcarrier spacing, can efficiently address operating various services across various spectrums and various deployments. For example, in various outdoor and macro coverage deployments with less than 3 GHz FDD / TDD implementations, such as on bandwidths of 1, 5, 10, 20 MHz, etc., the subcarrier spacing can occur at 15 kHz. For various other outdoor and small cell coverage deployments with TDD greater than 3 GHz, the subcarrier spacing can occur at 30 kHz on an 80 / 100 MHz bandwidth. For various other indoor broadband implementations using TDD in the unlicensed portion of the 5 GHz band, the subcarrier spacing can occur at 60 kHz on a 160 MHz bandwidth. Finally, for various deployments transmitting with a 28 GHz TDD using mmWave components, the subcarrier spacing can occur at 120 kHz on a 500 MHz bandwidth.

[0033] The scalable numerology of 5G NR enables scalable TTIs for various latency and Quality of Service (QoS) requirements. For example, shorter TTIs can be used for low latency and high reliability, while longer TTIs can be used for higher spectral efficiency. The efficient multiplexing of long and short TTIs allows transmissions to start at symbol boundaries. 5G NR also anticipates a self - contained integrated sub - frame design with uplink / downlink scheduling information, data, and acknowledgments in the same sub - frame. The self - contained integrated sub - frame supports communication in unlicensed or contention - based shared spectrum, adaptive uplink / downlink (which can be flexibly configured on a per - cell basis to dynamically switch between uplink and downlink to meet current traffic demands).

[0034] Various other aspects and features of the present disclosure are further described below. It is apparent that the teachings herein can be embodied in a variety of forms, and that any particular structure, function, or both disclosed herein are merely representative and not restrictive. Based on the teachings herein, those of ordinary skill in the art should understand that the aspects disclosed herein can be implemented independently of any other aspect, and that two or more of these aspects can be combined in various ways. For example, any number of the aspects outlined herein can be used to implement an apparatus or practice a method. Additionally, other structures, functions, or structures and functions in addition to or different from one or more of the aspects set forth herein can be used to implement such an apparatus or practice such a method. For example, a method can be implemented as part of a system, device, apparatus, and / or as instructions stored on a computer - readable medium for execution on a processor or computer. Additionally, an aspect can include at least one element of a claim.

[0035] Figure 1 is a block diagram showing a 5G network 100 that includes various base stations and UEs configured according to aspects of the present disclosure. The 5G network 100 includes a plurality of base stations 105 and other network entities. A base station can be a station that communicates with a UE and can also be referred to as an evolved Node B (eNB), a next - generation eNB (gNB), an access point, etc. Each base station 105 can provide communication coverage for a specific geographical area. In 3GPP, depending on the context in which the term "cell" is used, the term "cell" can refer to the specific geographical coverage area of the base station and / or the base - station subsystem of the serving coverage area.

[0036] A base station can provide communication coverage for macro cells or small cells (e.g., pico cells or femto cells) and / or other types of cells. Generally, a macro cell covers a relatively large geographical area (e.g., with a radius of several kilometers), and can allow unrestricted access by UEs having a service subscription with the network provider. Generally, small cells such as pico cells cover a relatively small geographical area, and can allow unrestricted access by UEs having a service subscription with the network provider. Small cells such as femto cells generally cover a relatively small geographical area (e.g., a home), and in addition to unrestricted access, can also provide restricted access for UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users in the home, etc.). A base station for a macro cell can be referred to as a macro base station. A base station for a small cell can be referred to as a small cell base station, a pico base station, a femto base station, or a home base station. In Figure 1 In the example shown in Figure 1 , base stations 105d and 105e are conventional macro base stations, while base stations 105a - 105c are macro base stations implementing one of 3-dimensional (3D), full-dimensional (FD), or massive MIMO. Base stations 105a - 105c make full use of their higher-dimensional MIMO capabilities to increase coverage and capacity by using 3D beamforming in elevation and azimuth beamforming. Base station 105f is a small cell base station, which can be a home node or a portable access point. A base station can support one or more (e.g., two, three, four, etc.) cells.

[0037] The 5G network 100 can support synchronous or asynchronous operation. For synchronous operation, base stations can have similar frame timings, and transmissions from different base stations can be approximately aligned in time. For asynchronous operation, base stations can have different frame timings, and transmissions from different base stations can be misaligned in time.

[0038] UE 115 is dispersed in the wireless network 100, and each UE can be stationary or mobile. A UE can also be referred to as a terminal, mobile station, user unit, station, etc. A UE can be a cellular phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, tablet computer, laptop computer, cordless phone, wireless local loop (WLL) station, etc. In one aspect, a UE can be a device including a universal integrated circuit card (UICC). In another aspect, a UE can be a device that does not include a UICC. In some aspects, a UE that does not include a UICC can also be referred to as an Internet of Everything (IoE) or Internet of Things (IoT) device. UE 115a - 115d are examples of mobile smart phone - type devices for accessing the 5G network 100. A UE can also be a machine specifically configured for connection - oriented communication (which includes machine - type communication (MTC), enhanced MTC (eMTC), narrow - band IoT (NB - IoT), etc.). UE 115e - 115k are examples of various machines configured for communication accessing the 5G network 100. A UE is capable of communicating with any type of base station, whether it is a macro base station, small cell, etc. In Figure 1 it, lightning (e.g., communication link) indicates a wireless transmission between the UE and the serving base station (which is the base station designated to serve the UE on the downlink and / or uplink), or a desired transmission between base stations, and a backhaul transmission between base stations.

[0039] When operating in the 5G network 100, base stations 105a - 105c use 3D beamforming and cooperative spatial techniques (e.g., coordinated multi - point (CoMP) or multi - connection) to serve UE 115a and UE 115b. Macro base station 105d performs backhaul communication with base stations 105a - 105c and small cell base station 105f. Macro base station 105d also transmits multicast services subscribed to and received by UE 115c and 115d. Such multicast services can include mobile TV or streaming video, or can include other services for providing community information (such as weather emergencies or alerts, such as Amber alerts or gray alerts).

[0040] The 5G network 100 also supports mission-critical communications for mission-critical devices (e.g., UE 115e, which is a drone) with ultra-reliable and redundant links. The redundant communication links with UE 115e include those from macro base stations 105d and 105e, and small cell base station 105f. Other machine type devices such as UE 115f (thermometer), UE 115g (smart meter), and UE 115h (wearable device) can communicate via the 5G network 100 in the following ways: communicate directly with base stations (such as small cell base station 105f and macro base station 105e); or in a multi-hop configuration, communicate by relaying their information to the network through another user equipment, e.g., UE 115f transmits temperature measurement information to smart meter UE 115g, and then the temperature measurement information is reported to the network via small cell base station 105f. In a vehicle-to-vehicle (V2V) mesh network, for example, between UEs 115i - 115k communicating with macro base station 105e, the 5G network 100 can also provide additional network efficiency through dynamic, low-latency TDD / FDD communications.

[0041] Figure 2 A block diagram showing the design of base station 105 and UE 115, where the base station 105 and UE 115 can be Figure 1 one of the base stations in Figure 1 and one of the UEs in

[0042] At the UE 115, antennas 252a through 252r may receive downlink signals from the base station 105 and may provide the received signals to demodulators (DEMOD) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, down-convert, and digitize) a respective received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain the received symbols from all demodulators 254a through 254r, perform MIMO detection on the received symbols (if any), and provide detected symbols. A receive processor 258 may process (e.g., demodulate, de-interleave, and decode) the detected symbols, provide decoded data for the UE 115 to a data sink 260, and provide decoded control information to a controller / processor 280.

[0043] On the uplink, at the UE 115, a transmit processor 264 may receive data (e.g., for PUSCH) from a data source 262 and control information (e.g., for PUCCH) from a controller / processor 280 and process the data and control information. The transmit processor 264 may also generate reference symbols for reference signals. Symbols from the transmit processor 264 may be precoded (if any) by a TX MIMO processor 266, further processed (e.g., for SC-FDM, etc.) by modulators 254a through 254r, and transmitted to the base station 105. At the base station 105, an uplink signal from the UE 115 may be received by an antenna 234, processed by a demodulator 232, detected (if any) by a MIMO detector 236, and further processed by a receive processor 238 to obtain decoded data and control information transmitted by the UE 115. The processor 238 may provide the decoded data to a data sink 239 and provide the decoded control information to a controller / processor 240.

[0044] Controllers / processors 240 and 280 may direct operations at the base station 105 and the UE 115, respectively. The controller / processor 240 and / or other processors and modules at the base station 105 may perform or direct the execution of various processes for the techniques described herein (such as Figure 8 the processes disclosed at Figure 6The functional modules shown in, and / or the execution of other processes for the techniques described herein. Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively. Scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0045] Wireless communication systems operated by different network operating entities (e.g., network operators) may share spectrum. In some instances, a network operating entity may be configured to use all of the designated shared spectrum for at least a period of time before another network operating entity uses all of the designated shared spectrum during a different time period. Thus, to allow network operating entities to use the full designated shared spectrum and to mitigate interfering communications between different network operating entities, certain resources (e.g., time) may be partitioned and allocated to different network operating entities for certain types of communications.

[0046] For example, certain time resources may be allocated to a network operating entity that are reserved for exclusive communication by the network operating entity using all of the shared spectrum. Other time resources may also be allocated to a network operating entity in which that entity is given a higher priority than other network operating entities to use the shared spectrum for communication. If the prioritized network operating entity does not utilize these time resources that are prioritized for use by that network operating entity, then other network operating entities may use the resources on an opportunistic basis. Additional time resources may be allocated for use on an opportunistic basis to any network operator.

[0047] Access to the shared spectrum and arbitration of time resources between different network operating entities may be centrally controlled by a separate entity, determined autonomously according to a predefined arbitration scheme, or determined dynamically based on interactions between the wireless nodes of the network operators.

[0048] In some cases, ( Figure 1The UE 115 and the base station 105 in the 5G network 100 can operate in a shared radio frequency spectrum band that can include licensed or unlicensed (e.g., contention-based) spectrum. In the unlicensed frequency portion of the shared radio frequency spectrum band, the UE 115 or the base station 105 can traditionally perform a medium sensing process to contend for access to the spectrum. For example, the UE 115 or the base station 105 can perform a listen-before-talk (LBT) process such as a clear channel assessment (CCA) before communication to determine whether the shared channel is available. The CCA can include an energy detection process to determine whether there are any other active transmissions. For example, a device can infer that a change in the received signal strength indicator (RSSI) of a power meter indicates that the channel is occupied. Specifically, signal power concentrated in a certain bandwidth and exceeding a predetermined noise floor can indicate another wireless transmitter. The CCA can also include the detection of a specific sequence used to indicate channel usage. For example, another device can send a specific preamble before transmitting a data sequence. In some cases, the LBT process can include: a wireless node adjusting its own backoff window based on the amount of energy detected on the channel and / or acknowledgment / negative acknowledgment (ACK / NACK) feedback for its own transmitted packets (as a proxy for collisions).

[0049] Generally, four categories of LBT processes have been proposed for sensing a shared channel for signals that can indicate that the channel is occupied. In the first category (CAT 1 LBT), no LBT or CCA is applied to detect occupancy of the shared channel. The second category (CAT 2 LBT) (which can also be referred to as short LBT, single-shot LBT, or 25-μs LBT) provides a node with performing a CCA to detect energy above a predetermined threshold or to detect a message or preamble that occupies the shared channel. CAT 2 LBT performs the CCA without using random backoff operations, which results in its short length relative to the next category.

[0050] The third category (CAT 3 LBT) performs CCA to detect energy or messages on the shared channel, but also uses random backoff and a fixed contention window. Thus, when a node initiates CAT 3 LBT, it performs a first CCA to detect occupancy of the shared channel. If the shared channel is idle during the duration of the first CCA, the node can continue to transmit. However, if the first CCA detects a signal occupying the shared channel, the node selects a random backoff based on a fixed contention window size and performs an extended CCA. If the shared channel is detected to be idle during the extended CCA and the random number has been decremented to 0, the node can start transmitting on the shared channel. Otherwise, the node decrements the random number and performs another extended CCA. The node will continue to perform the extended CCA until the random number reaches 0. If the random number reaches 0 without any extended CCA detecting channel occupancy, the node can transmit on the shared channel. If the channel occupancy is detected by the node in any extended CCA, the node can re-select a new random backoff based on the fixed contention window size to start the countdown again.

[0051] The fourth category (CAT 4 LBT) (which can also be referred to as a full LBT process) uses random backoff and a variable contention window size to perform CCA with energy or message detection. The order of CCA detection is similar to that of the CAT 3 LBT process, except that the contention window size is variable for the CAT 4 LBT process.

[0052] Using a medium sensing process to contend for access to an unlicensed shared spectrum may lead to low communication efficiency. This situation may be particularly obvious when multiple network operating entities (e.g., network operators) attempt to access the shared resource. In the 5G network 100, the base station 105 and the UE 115 may be operated by the same or different network operating entities. In some examples, a single base station 105 or UE 115 may be operated by more than one network operating entity. In other examples, each base station 105 and UE 115 may be operated by a single network operating entity. Requiring each of the base stations 105 and UEs 115 of different network operating entities to contend for the shared resource may result in increased signaling overhead and communication latency.

[0053] Figure 3 An example of a timing diagram 300 for coordinated resource partitioning is shown. The timing diagram 300 includes a superframe 305, and the superframe 305 may represent a fixed duration (e.g., 20 ms). The superframe 305 can be repeated for a given communication session, and such as with reference to Figure 1The wireless system of the described 5G network 100 may use a superframe 305. The superframe 305 may be divided into intervals such as an acquisition interval (A-INT) 310 and an arbitration interval 315. As further described in detail below, the A-INT 310 and the arbitration interval 315 may be subdivided into subintervals that are designated for certain resource types and are allocated to different network operation entities to facilitate coordinated communication between different network operation entities. For example, the arbitration interval 315 may be divided into a plurality of subintervals 320. Additionally, the superframe 305 may be further divided into a plurality of subframes 325 having a fixed duration (e.g., 1 ms). Although the timing diagram 300 shows three different network operation entities (e.g., Operator A, Operator B, Operator C), the number of network operation entities using the superframe 305 for coordinated communication may be greater than or less than the number shown in the timing diagram 300.

[0054] The A-INT 310 may be a dedicated interval of the superframe 305 that is reserved for exclusive communication by a network operation entity. In some examples, certain resources within the A-INT 310 may be allocated to each network operation entity for exclusive communication. For example, resource 330-a may be reserved for exclusive communication by Operator A (e.g., via base station 105a), resource 330-b may be reserved for exclusive communication by Operator B (e.g., via base station 105b), and resource 330-c may be reserved for exclusive communication by Operator C (e.g., via base station 105c). Since resource 330-a is reserved for exclusive communication by Operator A, neither Operator B nor Operator C can communicate during resource 330-a even if Operator A chooses not to communicate during those resources. That is, access to the exclusive resources is limited to the designated network operator. Similar restrictions apply to resource 330-b for Operator B and resource 330-c for Operator C. The wireless nodes of Operator A (e.g., UE 115 or base station 105) may transmit any desired information (e.g., control information or data) during their exclusive resources 330-a.

[0055] When communicating via exclusive resources, the network operation entity does not need to perform any medium sensing process (e.g., listen-before-talk (LBT) or clear channel assessment (CCA)) because the network operation entity knows that the resources are reserved. Since only the designated network operation entity can communicate via the exclusive resources, there can be a reduced likelihood of interfering communications (e.g., no hidden node problem) compared to relying solely on medium sensing techniques. In some examples, A-INT 310 is used to send control information such as synchronization signals (e.g., SYNC signals), system information (e.g., system information blocks (SIB)), paging information (e.g., physical broadcast channel (PBCH) messages), or random access information (e.g., random access channel (RACH) signals). In some examples, all wireless nodes associated with the network operation entity can transmit simultaneously during their exclusive resources.

[0056] In some examples, resources can be classified as being prioritized for certain network operation entities. Resources assigned a priority for a particular network operation entity can be referred to as a guaranteed interval (G-INT) for that network operation entity. The interval of resources used by a network operation entity during a G-INT can be referred to as a prioritized sub-interval. For example, resource 335-a can be prioritized for use by operator A and can thus be referred to as a G-INT for operator A (e.g., G-INT-OpA). Similarly, resource 335-b can be prioritized for operator B (e.g., G-INT-OpB), resource 335-c can be prioritized for operator C (e.g., G-INT-OpC), resource 335-d can be prioritized for operator A, resource 335-e can be prioritized for operator B, and resource 335-f can be prioritized for operator C.

[0057] Figure 3 The various G-INT resources shown are presented as interleaved to show the association of the G-INT resources with their respective network operation entities, but these resources can all be on the same frequency bandwidth. Thus, if viewed along the time-frequency grid, the G-INT resources can appear as continuous lines within the superframe 305. This partitioning of the data can be an example of time division multiplexing (TDM). Additionally, when resources appear in the same sub-interval (e.g., resource 340-a and resource 335-b), these resources represent the same time resources with respect to the superframe 305 (e.g., the resources occupy the same sub-interval 320), however, the resources are individually designated to show that the same time resources can be classified differently for different operators.

[0058] When resources are assigned a priority for a particular network operating entity (e.g., G-INT), that network operating entity can use those resources for communication without having to wait or perform any medium sensing process (e.g., LBT or CCA). For example, a wireless node of operator A can freely transmit any data or control information during resource 335-a without interference from wireless nodes of operator B or operator C.

[0059] The network operating entity can additionally signal to another operator that the network operating entity intends to use a particular G-INT. For example, referring to resource 335-a, operator A can signal to operator B and operator C that operator A intends to use resource 335-a. Such signaling can be referred to as an activity indication. Additionally, since operator A has priority on resource 335-a, operator A can be considered a higher priority operator than both operator B and operator C. However, as discussed above, operator A does not have to signal to other network operating entities to ensure interference-free transmission during resource 335-a because resource 335-a is assigned a priority for operator A.

[0060] Similarly, a network operating entity can signal to another network operating entity that the network operating entity does not intend to use a particular G-INT. This signaling can also be referred to as an activity indication. For example, referring to resource 335-b, even though the resource is assigned a priority for operator B, operator B can signal to operator A and operator C that operator B intends not to use resource 335-b for communication. Referring to resource 335-b, operator B can be considered a higher priority network operating entity than operator A and operator C. In these cases, operator A and C can attempt to use the resources of sub-interval 320 on an opportunistic basis. Thus, from the perspective of operator A, sub-interval 320 that includes resource 335-b can be considered an opportunistic interval (O-INT) (e.g., O-INT-OpA) for operator A. For illustrative purposes, resource 340-a can represent an O-INT for operator A. Additionally, from the perspective of operator C, the same sub-interval 320 can represent an O-INT for operator C with corresponding resource 340-b. Resources 340-a, 335-b, and 340-b all represent the same time resource (e.g., a particular sub-interval 320), but are individually identified to indicate that the same resource can be considered a G-INT for some network operating entities and also an O-INT for other network operating entities.

[0061] To utilize resources on an opportunistic basis, Operator A and Operator C can perform a medium sensing process before sending data to check for communication on a specific channel. For example, if Operator B decides not to use Resource 335-b (e.g., G-INT-OpB), Operator A can use those same resources (e.g., represented by Resource 340-a) by first checking the channel for interference (e.g., LBT) and then sending data when it determines the channel is idle. Similarly, in response to an indication that Operator B will not use its G-INT (e.g., Resource 335-b), if Operator C wants to access resources on an opportunistic basis during sub-interval 320 (e.g., use O-INT represented by Resource 340-b), Operator C can perform a medium sensing process and access the resources if available. In some cases, two operators (e.g., Operator A and Operator C) may attempt to access the same resources, in which case the operators can employ a contention-based process to avoid interfering communications. Operators can also have sub-priorities assigned to them, which are designed to determine which operator can obtain access to resources when multiple operators attempt to access simultaneously. For example, when Operator B does not use Resource 335-b (e.g., G-INT-OpB), Operator A may have a higher priority than Operator C during sub-interval 320. Note that in another sub-interval (not shown), when Operator B does not use its G-INT, Operator C may have a higher priority than Operator A.

[0062] In some examples, a network operation entity may intend not to use a specific G-INT assigned to it, but may not send out an active indication to convey the intention of not using the resources. In such cases, for a specific sub-interval 320, a lower-priority operation entity can be configured to monitor the channel to determine whether a higher-priority operation entity is using the resources. If the lower-priority operation entity determines via LBT or a similar method that the higher-priority operation entity will not use its G-INT resources, the lower-priority operation entity can attempt to access the resources on an opportunistic basis, as described above.

[0063] In some examples, access to G-INT or O-INT can be preceded by a reservation signal (e.g., Request to Send (RTS) / Clear to Send (CTS)), and a contention window (CW) can be randomly selected between one operation entity and the total number of operation entities.

[0064] In some examples, the operating entity may employ coordinated multi-point (CoMP) communication or be compatible with CoMP communication. For example, the operating entity may, as needed, employ CoMP and dynamic time division duplex (TDD) in G-INT, and opportunistic CoMP in O-INT.

[0065] In Figure 3 the example shown, each sub-interval 320 includes a G-INT for one of operators A, B, or C. However, in some cases, one or more sub-intervals 320 may include resources that are neither reserved for exclusive use nor reserved for preferential use (e.g., unassigned resources). Such unassigned resources can be considered as O-INT for any network operating entity and can be accessed on an opportunistic basis, as described above.

[0066] In some examples, each sub-frame 325 may contain 14 symbols (e.g., for a 60 kHz tone spacing, it is 250 - μs). These sub-frames 325 can be independent, self - contained intervals C (ITC), or sub-frame 325 can be part of a long ITC. An ITC can be a self - contained transmission that starts with a downlink transmission and ends with an uplink transmission. In some embodiments, an ITC may contain one or more sub-frames 325 that operate continuously in terms of medium occupancy. In some cases, assuming a 250 - μs transmission opportunity, there may be a maximum of eight network operators in A-INT 310 (e.g., with a duration of 2 ms).

[0067] Although Figure 3 three operators are shown, it should be understood that fewer or more network operating entities can be configured to operate in a coordinated manner as described above. In some cases, based on the number of active network operating entities in the system, the positions of G-INT, O-INT, or A-INT for each operator within the super - frame 305 are determined autonomously. For example, if there is only one network operating entity, each sub - interval 320 can be occupied by the G-INT for that single network operating entity, or the sub - interval 320 can alternate between the G-INT and O-INT for that network operating entity to allow other network operating entities to enter. If there are two network operating entities, the sub - interval 320 can alternate between the G-INT for the first network operating entity and the G-INT for the second network operating entity. If there are three network operating entities, the G-INT and O-INT for each network operating entity can be designed as Figure 3As shown. If there are four network operation entities, the first four sub - intervals 320 may include consecutive G - INTs for the four network operation entities, and the remaining two sub - intervals 320 may contain O - INT. Similarly, if there are five network operation entities, the first five sub - intervals 320 may contain consecutive G - INTs for the five network operation entities, and the remaining sub - intervals 320 may contain O - INT. If there are six network operation entities, all six sub - intervals 320 may include consecutive G - INTs for each network operation entity. It should be understood that these examples are for illustrative purposes only, and other self - determined interval allocations may be used.

[0068] It should be understood that Figure 3 The coordination framework described with reference to is for illustrative purposes only. For example, the duration of the superframe 305 may be more or less than 20 ms. In addition, the number, duration, and position of the sub - intervals 320 and sub - frames 325 may be different from the configurations shown. In addition, the type of resource designation (e.g., exclusive, prioritized, unassigned) may be different, or may include more or fewer sub - designations.

[0069] As Figures 1 - 3 shown, the base station and the mobile device may each be equipped with multiple antennas to transmit and / or receive information. In certain aspects of the present disclosure, the base station and the mobile device may use multiple antennas for beamforming. Beamforming may refer to configuring multiple antennas to form a beam through which information can be transmitted and / or received more efficiently and / or effectively.

[0070] Figure 4 is a diagram illustrating an example of wireless communication performed in a wireless communication system according to certain aspects of the present disclosure. Figure 4 In, the base station 402 communicates with the first mobile device 404 and the second mobile device 406 via different beams in different beamforming directions. As shown by a set of beams 408, the base station 402 may communicate via any one of the multiple directional beams. As shown by a set of beams 410, the first mobile device 404 may communicate via any one of the multiple directional beams. As shown by a set of beams 412, the second mobile device 406 may communicate via any one of the multiple directional beams. Thus, at a given point in time, the base station 302 may communicate with the first mobile device 404 via a first beam in a first beamforming direction 414 and may communicate with the second mobile device 406 via a second beam in a second beamforming direction 416. As Figure 4 shown, the beamforming directions from the base station 402 to the first mobile device 404 and the second mobile device 406 are distinguishable.

[0071] In accordance with certain aspects of the present disclosure, a beam for controlling the communication of information, e.g., a beam for a Physical Downlink Control Channel (PDCCH), may be referred to as a Control Resource Set (CORESET). A CORESET may refer to a set of resource blocks in the frequency domain in which a mobile device may attempt to blindly decode downlink control information. In accordance with certain aspects of the present disclosure, the location of at least one CORESET may be obtained by a mobile device via a Master Information Block (MIB), a Physical Broadcast Channel (PBCH), and / or by implicit derivation from an initial access communication. In accordance with certain aspects of the present disclosure, the location of an additional CORESET may be obtained by a mobile device via Radio Resource Control (RRC) signaling / communication. In accordance with certain aspects of the present disclosure, a gNB may notify a mobile device of both the transmission bandwidth for a CORESET and the transmission bandwidth of a Channel State Information Reference Signal (CSI-RS). In accordance with certain aspects of the present disclosure, multiple CORESETS for a mobile device may overlap in time and / or frequency. In accordance with certain aspects of the present disclosure, a CORESET may span the duration of one or more symbols. Figure 5 FIG. shows a diagram illustrating an example of channel resource allocation for a CORESET in accordance with certain aspects of the present disclosure.

[0072] In accordance with certain aspects of the present disclosure, a maximum number (RB_N_max) of resource blocks may be available for allocation within a symbol for the wireless communication of control information between a base station and a mobile device. In accordance with certain aspects of the present disclosure, the frequency associated with RB_N_max may specify an entire bandwidth that may be specified within the symbol and that may be available for the wireless communication of control information between a gNB and a mobile device within the symbol. In accordance with certain aspects of the present disclosure, this bandwidth may be referred to as a Component Carrier (CC) bandwidth.

[0073] According to some aspects of the present disclosure, the bandwidth associated with the total number of frequency resources available for wireless communication of control information may be less than the CC bandwidth. In other words, the entire CC bandwidth is generally not available for wireless communication of control information. For example, in one aspect of the present disclosure, the bandwidth associated with the total number of frequency resources available for wireless communication of control information may be half of the CC bandwidth, such that the total number of frequency resources available for wireless communication of control information may be half of RB_N_max. In another aspect of the present disclosure, the bandwidth associated with the total number of frequency resources available for wireless communication of control information may be one-tenth of the CC bandwidth, such that the total number of frequency resources available for wireless communication of control information may be one-tenth of RB_N_max. According to some aspects of the present disclosure, this bandwidth associated with the total number of frequency resources available for wireless communication of control information, i.e., the maximum bandwidth on which control information can be transmitted or received, may be referred to as a bandwidth part (BWP). Thus, the CC bandwidth may include one or more BWPs. According to some aspects of the present disclosure, each BWP may be associated with a specific numerology, such as a specific subcarrier spacing, a specific frequency position, and / or a specific bandwidth. According to some aspects of the present disclosure, the minimum bandwidth that a BWP may have may be the bandwidth required for synchronization signals.

[0074] According to some aspects of the present disclosure, control information may be transmitted and / or received over the bandwidth spanning the BWP. In other aspects of the present disclosure, control information may be transmitted and / or received over the bandwidth spanning a subset of the BWP (i.e., a subset of the several frequency resources available for wireless communication of control information). According to some aspects of the present disclosure, the subset of the BWP that may be used for wireless communication of control information may be referred to as a BWP subband. Thus, according to some aspects of the present disclosure, a BWP subband may be associated with frequency resources that result in a bandwidth less than the BWP. In other aspects of the present disclosure, a BWP subband may be associated with frequency resources that result in a bandwidth as large as the BWP.

[0075] In some aspects of the present disclosure, the base station transmit beam and the corresponding mobile device receive beam for downlink communication may be referred to as a downlink beam pair link (BPL). For example, Figure 4 One BPL shown in may include a BS transmit beam 421 and a UE receive beam 422 associated with a beamforming direction 414. Figure 4Another BPL as shown may include a BS transmit beam 431 and a UE receive beam 432 associated with a beamforming direction 416. In some aspects of the present disclosure, a mobile device and a base station may be associated with multiple downlink and / or uplink BPLs. For example, as the mobile device moves in the network, the beams used by the mobile device for reception during downlink communication and the beams used by the base station for transmission during downlink communication may change, and thus additional downlink BPLs are established between the base station and the mobile device.

[0076] To improve the reliability of wireless communication, a mobile device may be configured to perform beam failure detection (BFD) and beam failure recovery (BFR) procedures. For example, the mobile device may perform a BFD procedure to detect a failure in wireless communication performed using a beam, and may perform a BFR procedure to identify another beam through which the mobile device can continue wireless communication, thereby recovering from the detected wireless communication failure. Similarly, the base station may be configured to assist the mobile device in recovering from a failure in wireless communication performed using a beam, for example, by notifying the mobile device of one or more other beams that the mobile device can use for reliable communication.

[0077] Generally, a mobile device may use only one BFD / BFR procedure, and this single BFD / BFR procedure is typically only associated with the beam used to transmit unicast information related only to that single mobile device. Similarly, a typical base station may only handle one BFD / BFR procedure associated with a mobile device, and this single BFD / BFR procedure is typically only associated with the beam used to transmit unicast information. Therefore, when only using a single BFD / BFR procedure that is only associated with the beam used to transmit unicast information, the overall reliability of wireless communication (including communication of more than just unicast information) is limited.

[0078] Aspects of the present disclosure improve wireless communication reliability by utilizing at least two distinct BFD / BFR procedures. One BFD / BFR procedure may be associated with the beam used to transmit unicast information. At least one other BFD / BFR procedure may be associated with the beam used to transmit high-priority information or broadcast information. The two BFD / BFR procedures may operate in parallel and be independent of each other. For example, one BFD / BFR procedure may be dedicated to the beam used to transmit unicast information, and another different BFD / BFR procedure may be dedicated to the beam used to transmit high-priority information or broadcast information.

[0079] Figure 6 is a block diagram illustrating a method 600 for performing beam failure detection and recovery for a high-priority or broadcast CORESET in a wireless communication system according to some aspects of the present disclosure. Aspects of method 600 may be described with respect toFigures 1 - 5 , Figure 7A and Figure 7B and implemented in accordance with the aspects of the present disclosure described. For example, referring to Figure 2 , the controller / processor 280 of the UE 115 may control the UE 115 to perform the steps of method 600. Specifically, method 600 includes a step of monitoring, by the processor, one or more first reference signals associated with wireless communication performed using one or more first receiving beams at block 602. At block 604, method 600 includes a step of monitoring, by the processor, one or more second reference signals associated with wireless communication performed using one or more second receiving beams.

[0080] In certain aspects of the present disclosure, the wireless communication performed using one or more first receiving beams may include the mobile device receiving broadcast control information related to more than one mobile device, and the wireless communication performed using one or more second receiving beams may include the mobile device receiving unicast control information related to a single mobile device. In one aspect of the present disclosure, the unicast control information may refer to the following control information: the control information has been scrambled, for example, by a base station processor using an identifier specific to the mobile device or an identifier specific to a user of a particular mobile device. The broadcast control information may refer to the following control information: the control information has been scrambled, for example, by a base station processor using an identifier associated with multiple mobile devices, multiple users, or one or more base station cells. According to one aspect of the present disclosure, the wireless communication performed using one or more first receiving beams or using one or more second receiving beams may refer to downlink communication of control information, for example, control information sent by a base station to a mobile device in a PDCCH (CORESET).

[0081] According to another aspect of the present disclosure, the wireless communication performed using one or more first receiving beams may include both the mobile device receiving broadcast control information related to more than one mobile device and the mobile device receiving unicast control information related to a single mobile device. For example, the mobile device may use the same beam to receive control information including both broadcast and unicast control information.

[0082] In another aspect of the present disclosure, wireless communication performed using one or more first receiving beams may include a mobile device receiving priority information, e.g., information that may need to be received with high reliability and / or information with a lower failure tolerance. In one aspect of the present disclosure, the priority information may be broadcast control information. In another aspect of the present disclosure, the priority information may be unicast control information. Thus, in certain aspects of the present disclosure, wireless communication performed using one or more first receiving beams may include both a mobile device receiving priority information and a mobile device receiving unicast control information related to a single mobile device. For example, the mobile device may use the same beam to receive control information including priority and unicast control information.

[0083] In certain aspects of the present disclosure, wireless communication performed using one or more first receiving beams may include wireless communication within a first BWP. According to certain aspects of the present disclosure, wireless communication performed using one or more second receiving beams may include wireless communication within the first BWP (i.e., the same BWP as that for one or more first receiving beams). In another aspect of the present disclosure, wireless communication performed using one or more second receiving beams may include wireless communication within a second BWP (i.e., a BWP different from the BWP for one or more first receiving beams).

[0084] In certain aspects of the present disclosure, wireless communication performed using one or more first receiving beams may include wireless communication within a first CC. According to certain aspects of the present disclosure, wireless communication performed using one or more second receiving beams may include wireless communication within the first CC (i.e., the same CC as that for one or more first receiving beams). In another aspect of the present disclosure, wireless communication performed using one or more second receiving beams may include wireless communication within a second CC (i.e., a CC different from the CC for one or more first receiving beams).

[0085] According to certain aspects of the present disclosure, one or more first receiving beams for wireless communication may be associated with one or more first reference signals. In one aspect of the present disclosure, a mobile device may use one or more first reference signals to determine whether communication using one or more first receiving beams is reliable, or whether a failure has occurred in wireless communication using one or more first receiving beams, and thus a BFR process should be initiated.

[0086] As an example, once a mobile device and a base station have established a particular set of one or more downlink BPLs for wireless communication, the base station may use one or more transmit beams from the set of downlink BPLs to transmit reference signals (e.g., one or more first reference signals), and the mobile device may use one or more receive beams from the set of downlink BPLs (e.g., one or more first receive beams) to receive reference signals (e.g., one or more first reference signals). Since the same beam (e.g., one or more first receive beams) used for wireless communication is used for transmitting and receiving the associated reference signals (e.g., one or more first reference signals), the mobile device may use the reference signals to determine the quality of wireless communication using the beam. Thus, the mobile device may monitor one or more attributes (e.g., signal power) of the one or more first reference signals to determine whether the communication using the one or more first receive beams is reliable, or whether a failure has occurred in the wireless communication using the one or more first receive beams, and thus the BFR process should be initiated.

[0087] In some aspects of the present disclosure, the reference signals among the one or more first reference signals may be CSI-RS and / or synchronization signal blocks (SSBs). According to one aspect of the present disclosure, the one or more first reference signals may be transmitted and / or received less frequently than the broadcast and / or priority information transmitted and / or received using the one or more first receive beams.

[0088] According to one aspect of the present disclosure, a first receive beam among the one or more first receive beams may be associated with a first reference signal among the one or more first reference signals. In another aspect of the present disclosure, a first receive beam among the one or more first receive beams may be associated with a plurality of first reference signals among the one or more first reference signals. According to another aspect of the present disclosure, a plurality of first receive beams among the one or more first receive beams may be associated with the same one or more first reference signals.

[0089] The relationship between one or more second receive beams (e.g., those used for communication of unicast information) for wireless communication and one or more second reference signals is the same as the relationship described in the previous paragraphs between one or more first receive beams for wireless communication and one or more first reference signals. Thus, those skilled in the art will readily recognize that the description in the previous paragraphs of the first reference signals and the relationship between one or more first receive beams and one or more first reference signals also describes the attributes of the second reference signals and the relationship between one or more second receive beams and one or more second reference signals.

[0090] According to certain aspects of the present disclosure, one or more first receiving beams may have different frequency and / or time resources from one or more second receiving beams. For example, in certain aspects, one or more first receiving beams and one or more second receiving beams may be associated with different CORESETs. In other words, the frequency, time, or both frequency and time resources allocated for one or more first receiving beams may be different from the frequency, time, or both frequency and time resources allocated for one or more second receiving beams. Thus, in certain aspects of the present disclosure, different frequency and / or time resources may be allocated for the beams used to transmit broadcast or priority information than for the beams used to transmit unicast information. In such aspects of the present disclosure, the beams used to transmit unicast information may not be reused to transmit broadcast or priority information.

[0091] In certain aspects of the present disclosure, one or more first receiving beams may have the same frequency and time resources as one or more second receiving beams. For example, in certain aspects, one or more first receiving beams and one or more second receiving beams may be associated with the same CORESET. In other words, the frequency, time, or both frequency and time resources allocated for one or more first receiving beams may be the same as the frequency, time, or both frequency and time resources allocated for one or more second receiving beams. Thus, in certain aspects of the present disclosure, the same frequency and / or time resources may be allocated for the beams used to transmit broadcast or priority information as for the beams used to transmit unicast information. In such aspects of the present disclosure, the beams used to transmit unicast information may also be used or reused to transmit broadcast or priority information.

[0092] At block 606, method 600 further includes the step of a processor detecting a failure in wireless communication performed using one or more first receiving beams, at least in part based on monitoring of one or more first reference signals. At block 608, method 600 includes the step of a processor initiating a beam failure recovery process for one or more first receiving beams when a failure in wireless communication performed using one or more first receiving beams is detected. According to certain aspects of the present disclosure, the steps at blocks 602 to 606 may be part of a BFD process, and the step at block 608 may be part of a BFR process.

[0093] Figure 7AFIG. is an example diagram showing BFD and BFR performed in a wireless communication system according to certain aspects of the present disclosure. At block 702, a mobile device may monitor one or more first reference signals associated with wireless communication performed using one or more first receive beams. Such monitoring may correspond to the monitoring performed at block 602 of method 600. For example, the foregoing one or more first receive beams may correspond to one or more first receive beams composed of first receive beams 704a and 704b. Similarly, the foregoing one or more first reference signals may correspond to one or more first reference signals composed of first reference signals 706a and 706b. Thus, block 705 may represent a first set of one or more first receive beams 704 and their associated one or more first reference signals 706 that may be used for wireless communication. In certain aspects, one or more first reference signals 706 may be dedicated to monitoring one or more first receive beams 704.

[0094] Monitoring such as at block 702 may include: the UE comparing the signal power (e.g., reference signal received power (RSRP)) of at least one of the one or more first reference signals 706 with a threshold (e.g., an RSRP threshold). In certain aspects, the threshold may be dedicated to the BFD / BFR process associated with one or more first receive beams 704 used to transmit high-priority information or broadcast information. The monitoring may also include other processing performed on the one or more first reference signals 706 to determine whether communication using the one or more first receive beams is reliable, or whether a failure has occurred in the wireless communication using the one or more first receive beams and thus the BFR process should be initiated. As part of the monitoring performed at block 702, when the signal power of at least one of the one or more first reference signals 706 is below the threshold, the mobile device may determine that a beam failure instance has occurred. As an example, at block 702a, the mobile device may process at least one of the one or more first reference signals 706 and determine that none of the one or more first reference signals 706 has a signal power below the threshold and thus determine that no beam failure instance has occurred. As a result of such processing at block 702a, the mobile device may not initiate any additional BFD or BFR processing, but may wait for the next reception of the one or more first reference signals 706 to again determine whether a beam failure instance has occurred.

[0095] When the mobile device determines that a beam failure instance has occurred, the mobile device may start a BFD timer. As an example, at block 702b, the mobile device may determine that a first reference signal among one or more first reference signals 706 has a signal power below a threshold, and thus a beam failure instance has occurred. At block 708b, the mobile device may start a first BFD timer 709b. If no other beam failure instances are detected before the first BFD timer 709b expires, the mobile device may not initiate any additional BFD or BFR processing, but may instead wait for the next reception of one or more first reference signals 706 to determine again whether a beam failure instance has occurred.

[0096] At block 702c, the mobile device may again determine that a first reference signal among one or more first reference signals 706 has a signal power below a threshold, and thus determine that a beam failure instance has occurred. At block 708c, the mobile device may start a second BFD timer 709c. In some aspects, the BFD timers 709b and 709c may be dedicated to the BFD / BFR process associated with one or more first receive beams used for transmitting high-priority information or broadcast information. At block 702d, the mobile device may again determine that a first reference signal among one or more first reference signals 706 has a signal power below a threshold, and thus determine that another beam failure instance has occurred. In Figure 7A which, the beam failure instance identified at block 702d may occur before the second BFD timer 709c expires.

[0097] In some aspects of the present disclosure, detecting a failure in wireless communication performed using one or more first receive beams, at least in part based on monitoring of one or more first reference signals (e.g., the detection performed as part of the detection step at block 606 of method 600), may include: the mobile device detecting that a threshold number of beam failure instances have occurred before the BFD timer expires. The threshold number of beam failure instances may be different for different types of mobile devices, different types of information being transmitted, different types of communication systems, and / or various other different factors.

[0098] In Figure 7AIn the aspects of the present disclosure shown, the threshold number of beam failure instances is two. Thus, at block 702d, the mobile device may detect (such as the detection part of the detection step at block 606 of method 600) that a failure has occurred in the wireless communication performed using one or more first receive beams 704 based on the monitoring of one or more first reference signals 706 (such as the monitoring performed at block 702). In particular, the mobile device may detect that a failure has occurred in the wireless communication performed using one or more first receive beams 704 because a first beam failure instance is detected during the monitoring performed at block 702c and a second beam failure instance is detected during the monitoring performed at block 702d, where the second beam failure instance is detected before the expiration of the second BFD timer 709c, and the second BFD timer 709c is started as a result of the detected first beam failure instance.

[0099] At block 710, as a result of detecting a failure in the wireless communication performed using one or more first receive beams 704 (such as at block 702d), the mobile device may reset the second BFD timer 709c and start a BFR process for one or more first receive beams 704. Thus, starting a BFR process for one or more first receive beams 704 (such as the start performed as part of the start step at block 608 of method 600) when a failure in the wireless communication performed using one or more first receive beams 704 is detected may include: the mobile device starting the BFR process at block 710 when a failure in the wireless communication performed using one or more first receive beams 704 is detected (such as at block 702d). In certain aspects of the present disclosure, starting the BFR process, such as at block 608 of method 600, may include starting a BFR timer 712.

[0100] As part of the BFR process, the mobile device may attempt to determine whether there are candidate beams available for restoring the wireless communication. For example, in Figure 7AIn [the figure], at block 714, the mobile device can also monitor the attributes of one or more candidate reference signals 716a-d associated with one or more candidate receive beams 718a-d. In some aspects, one or more candidate reference signals 716a-d can be dedicated to monitoring one or more candidate receive beams 718a-d. Thus, block 720 can represent a set of one or more candidate receive beams 718 and their associated one or more candidate reference signals 716 that can be used for wireless communication. At block 714, the mobile device can compare the signal power of at least one of the one or more candidate reference signals 716 with a threshold, which can be the same as or different from the threshold used as part of monitoring one or more first reference signals 706. At block 722, the mobile device can determine that at least one of the one or more candidate reference signals 716 has a signal power not lower than the threshold.

[0101] At block 724, as part of the BFR process, the mobile device can send to, and the base station can receive from, the mobile device: an indication of a failure in wireless communication performed using one or more first receive beams 704. For example, the indication can be included in a report sent from the mobile device to the base station. In some aspects of the present disclosure, the mobile device can use the uplink transmission beam of the mobile device to send the above beam failure indication to the base station. According to some aspects, the uplink transmission beam can be associated with one or more second receive beams, such as one or more second receive beams described with respect to Figure 6 For example, in some aspects, the uplink transmission beam can be a beam for unicast wireless communication, e.g., a beam for wireless communication associated with unicast control information related only to the mobile device. According to another aspect of the present disclosure, the mobile device can send the indication to the base station in a physical uplink control channel (PUCCH) allocated to the mobile device.

[0102] According to some aspects of the present disclosure, at block 724, the mobile device can also send to, and the base station can receive from, the mobile device: an indication of one or more candidate beams 718 that can be used for wireless communication instead of one or more first receive beams 704, together with the indication of a failure in wireless communication. For example, the indication of one or more candidate beams 718 that can be used for wireless communication instead of one or more first receive beams 704 can be included in the same report that includes the beam failure indication.

[0103] At block 726, the mobile device may receive from, and the base station may send to, the mobile device: an indication of one or more other receive candidate beams for wireless communication that replace one or more first receive beams 704. In another aspect of the present disclosure, at block 726, the mobile device may receive from, and the base station may send to, the mobile device: an indication to use one or more candidate beams 718 for wireless communication in place of one or more first receive beams 704. In yet another aspect of the present disclosure, at block 726, the mobile device may receive from, and the base station may send to, the mobile device: an indication to use at least one second receive beam among one or more second receive beams for wireless communication in place of one or more first receive beams 704. In other words, at block 726, the mobile device may receive from the base station an instruction to reuse a unicast beam as a broadcast or priority beam after detecting an initial beam failure associated with communication of broadcast or priority information.

[0104] In certain aspects of the present disclosure, the mobile device may resume wireless communication initially performed using one or more first receive beams 704 by using the receive beam(s) identified at block 726. For example, in one aspect of the present disclosure, the mobile device may resume wireless communication initially performed using one or more first receive beams 704 by using one or more other receive beams for wireless communication that replace one or more first receive beams 704. In another aspect of the present disclosure, the mobile device may resume wireless communication initially performed using one or more first receive beams 704 by using one or more candidate beams 718 for wireless communication that replace one or more first receive beams 704. In yet another aspect of the present disclosure, the mobile device may resume wireless communication initially performed using one or more first receive beams 704 by using at least one second receive beam among one or more second receive beams for wireless communication that replace one or more first receive beams 704. For example, in certain aspects, the mobile device may use at least one second receive beam among the indicated one or more second receive beams to resume wireless communication associated with one or more first receive beams before a timer (such as, BFR timer 712) associated with a beam failure recovery process for one or more first receive beams expires. In certain aspects, the BFD timer 712 may be dedicated to the BFD / BFR process associated with one or more first receive beams for transmitting high-priority information or broadcast information.

[0105] At block 728, such as at block 726, when receiving an indication from the base station of at least one beam that the mobile device can use to resume wireless communication for a failure initially performed using one or more first receive beams 704, the mobile device may stop the BFR timer 712. At block 730, the mobile device may determine that a radio link failure (RLF) has occurred when the BFR timer 712 expires before the mobile device receives, such as at block 726, from the base station an indication of at least one beam that the mobile device can use to resume wireless communication for a failure initially performed using one or more first receive beams 704.

[0106] The foregoing as Figure 7A illustrated and referred to Figure 7A The BFD and BFR procedures described above are described with reference to the reception and processing of one or more first receive beams and their associated one or more first reference signals. The same BFD and BFR procedures performed based on the reception and processing of one or more first receive beams and their associated one or more first reference signals are also performed based on the reception and processing of one or more second receive beams and their associated one or more second reference signals. In other words, the same BFD and BFR procedures performed based on the reception and processing of the beams used for broadcast and / or priority information and their associated one or more first reference signals are also performed based on the reception and processing of the beams used for unicast information and their associated one or more second reference signals. Thus, those skilled in the art will readily recognize that the description in the preceding paragraph of Figure 7A the BFD and BFR operations shown therein and performed based on the reception and processing of one or more first receive beams and their associated one or more first reference signals also describes the BFD and BFR procedures performed based on the reception and processing of one or more second receive beams and their associated one or more second reference signals, where references to the first receive beams and first reference signals are replaced by references to the second receive beams and second reference signals, respectively.

[0107] As an example, Figure 7B is another diagram illustrating examples of BFD and BFR performed in a wireless communication system in accordance with certain aspects of the present disclosure. Figure 7B Some BFD and BFR operations are added that are performed based on the reception and processing of the beams used for unicast information and their associated one or more second reference signals.

[0108] At block 752c, the mobile device may determine that a second reference signal among one or more second reference signals has a signal power (e.g., RSRP) below another threshold (e.g., another RSRP threshold), and thus determine that a beam failure instance has occurred. For example, in some aspects, one or more second reference signals may be dedicated to monitoring one or more second receive beams. Additionally, in some aspects, other thresholds may be dedicated to the BFD / BFR process associated with one or more second receive beams used for transmitting unicast information. At block 758c, the mobile device may start BFD timer 759c. In some aspects, BFD timer 759c may be dedicated to the BFD / BFR process associated with one or more second receive beams used for transmitting unicast information. At block 752d, the mobile device may again determine that a second reference signal among one or more second reference signals has a signal power below a threshold, and thus determine that another beam failure instance has occurred. In Figure 7B this case, the beam failure instance identified at block 752d may occur before BFD timer 759c expires.

[0109] As before, for different types of mobile devices, different types of information being transmitted, different types of communication systems, and / or various other different factors, the threshold number of beam failure instances may be different. Additionally, the signal power threshold used when processing one or more second reference signals and the threshold number of beam failure instances may be different from the signal power threshold and the threshold number of beam failure instances used when processing one or more first reference signals.

[0110] In Figure 7B aspects of the present disclosure shown, when processing one or more second reference signals, the threshold number of beam failure instances is also two. Thus, at block 752d, the mobile device may detect, based on monitoring of one or more second reference signals (such as the monitoring performed at block 752), that a failure has occurred in the wireless communication performed using one or more second receive beams. In particular, the mobile device may detect that a failure has occurred in the wireless communication performed using one or more second receive beams because a first beam failure instance was detected during the monitoring performed at block 752c and a second beam failure instance was detected during the monitoring performed at block 752d, where the second beam failure instance was detected before BFD timer 759c expires, and the BFD timer 759c was started as a result of the detected first beam failure instance.

[0111] At block 760, as a result of detecting a failure in wireless communication performed using one or more second receive beams, such as at block 752d, the mobile device may reset the BFD timer 759c and initiate a BFR process for the one or more second receive beams. Thus, initiating a BFR process for one or more second receive beams upon detecting a failure in wireless communication performed using one or more second receive beams may include: the mobile device initiating the BFR process at block 760 when detecting a failure in wireless communication performed using one or more second receive beams, such as at block 752d. In some aspects of the present disclosure, initiating the BFR process may further include starting a BFR timer 762. In some aspects, the BFD timer 762 may be dedicated to the BFD / BFR process associated with one or more second receive beams for transmitting unicast information.

[0112] In some aspects of the present disclosure, in addition to initiating a BFR process for one or more first receive beams (such as the BFR process for one or more first receive beams initiated at block 710), a BFR process for one or more second receive beams may also be initiated at block 760. In other words, when the BFD process associated with one or more second reference signals and one or more second receive beams detects a beam failure, a distinct BFR process may be initiated for the one or more second receive beams, that is, a BFR process distinct from the BFR process initiated for one or more first receive beams. Thus, in some aspects of the present disclosure, two different BFD processes may be initiated and executed in parallel by the mobile device. In some aspects of the present disclosure, one BFD process may be associated with one or more first reference signals and one or more first receive beams (i.e., the beams for communication of broadcast and / or priority information), and another BFD process may be associated with one or more second reference signals and one or more second receive beams (i.e., the beams for communication of unicast information).

[0113] In some aspects of the present disclosure, during a period when a failure in wireless communication performed using one or more first receive beams is detected, the mobile device may not detect a failure in wireless communication performed using one or more second receive beams. For example, in Figure 7BIn [the figure], at block 702d, the mobile device can detect that a failure has occurred in the wireless communication performed using one or more first receiving beams 704 based on the monitoring of one or more first reference signals 706. At this time, the BFR timer 712 is started. In some aspects of the present disclosure, after the time when the BFR timer 712 is started and / or after the time when a failure in the wireless communication using one or more first receiving beams is detected at block 702d, but before the BFR timer 712 expires, or before the mobile device receives an indication or other information from the base station at block 726, the mobile device may not detect a failure in the wireless communication performed using one or more second receiving beams. For example, when the mobile device monitors one or more second reference signals, it may not detect that any of the one or more second reference signals has a signal power below a threshold, for example, because the wireless communication is reliable during this time period. As a result, when a failure in the wireless communication performed using one or more second receiving beams is not detected during the time period for starting the BRF process for one or more first receiving beams, the mobile device can avoid starting the BFR process for one or more second receiving beams during the time period for starting the BFR process for one or more first receiving beams. In one aspect of the present disclosure, the time period for starting the BFR process for one or more first receiving beams may refer to the time period: after the time when the BFR timer 712 is started at block 710 and / or after the time when a failure in the wireless communication using one or more first receiving beams is detected at block 702d, but before the BFR timer 712 expires or before the mobile device receives an indication or other information from the base station at block 726.

[0114] As part of the BFR process, the mobile device can attempt to determine whether there are candidate beams that can be used to restore the wireless communication. For example, in Figure 7B [the figure], at block 764, the mobile device can also monitor the attributes of one or more candidate reference signals associated with one or more candidate receiving beams. At block 764, the mobile device can compare the signal power of at least one candidate reference signal among the one or more candidate reference signals with a threshold, which may be the same as or different from the threshold used as part of the monitoring of one or more second reference signals. At block 772, the mobile device can determine that at least one candidate reference signal among the one or more candidate reference signals has a signal power not lower than the threshold.

[0115] At block 774, as part of the BFR process, the mobile device may send to, and the base station may receive from, the mobile device: an indication of a failure in wireless communication performed using one or more second receive beams. For example, the indication may be included in a report sent by the mobile device to the base station. In some aspects of the present disclosure, the mobile device may send the above beam failure indication to the base station using an uplink transmission beam of the mobile device. According to some aspects, the uplink transmission beam may be associated with one or more second receive beams, such as one or more of the second receive beams described with respect to Figure 6 For example, in some aspects, the uplink transmission beam may be a beam for unicast wireless communication, e.g., a beam for wireless communication associated with unicast control information related only to the mobile device. According to another aspect of the present disclosure, the mobile device may send the indication to the base station in a physical uplink control channel (PUCCH) allocated to the mobile device. In some aspects, at least one of the frequency resource or the time resource for sending an indication of a failure in wireless communication performed using one or more second receive beams may be different from the frequency resource or the time resource for sending an indication of a failure in wireless communication performed using one or more first receive beams. In other words, each transmission may have its own dedicated resources.

[0116] According to some aspects of the present disclosure, at block 774, the mobile device may also send to, and the base station may receive from, the mobile device: an indication of one or more candidate beams that can be used for wireless communication in place of one or more second receive beams, along with an indication of a failure in wireless communication. For example, an indication of one or more candidate beams that can be used for wireless communication in place of one or more second receive beams may be included in the same report that includes the beam failure indication.

[0117] As Figure 7B shown, an indication of a failure in wireless communication performed using one or more second receive beams, sent by the mobile device to the base station and received by the base station from the mobile device, may be different from a first indication of a failure in wireless communication performed using one or more first receive beams, sent by the mobile device to the base station and received by the base station from the mobile device. In particular, as Figure 7B shown, as a result of two different and distinct BFD / BFR processes, both indications are sent / received. Thus, in some aspects of the present disclosure, at the base station, there may be a time period 790 during which the base station may process two different reports regarding two different beam failure indications. Thus, the base station's processing of two different reports regarding two different beam failure indications (e.g., determining to use different receive beams in place of different receive beams that resulted in different beam failure indications) may overlap during the time period 790.

[0118] At block 776, the mobile device can receive from, and the base station can send to, the mobile device: an indication of one or more other receive beams for wireless communication to replace one or more second receive beams. In another aspect of the present disclosure, at block 776, the mobile device can receive from, and the base station can send to, the mobile device: an indication to use one or more candidate beams for wireless communication to replace one or more second receive beams.

[0119] In certain aspects of the present disclosure, the mobile device can resume wireless communication initially performed using one or more second receive beams by using the receive beams identified at block 776. For example, in one aspect of the present disclosure, the mobile device can resume wireless communication initially performed using one or more second receive beams by using one or more other receive beams for wireless communication to replace one or more second receive beams. In another aspect of the present disclosure, the mobile device can resume wireless communication initially performed using one or more second receive beams by using one or more candidate beams for wireless communication to replace one or more second receive beams.

[0120] At block 778, when the mobile device receives from the base station at, for example, block 776 an indication of at least one beam that the mobile device can use to resume failed wireless communication initially performed using one or more second receive beams, the mobile device can stop the BFR timer 762. At block 780, when the BFR timer 762 expires before the mobile device receives from the base station at, for example, block 776 an indication of at least one beam that the mobile device can use to resume failed wireless communication initially performed using one or more second receive beams, the mobile device can determine that a radio link failure (RLF) has occurred.

[0121] According to certain aspects of the present disclosure, one or more first reference signals can be the same as one or more second reference signals. In these aspects of the present disclosure, the base station can reuse, and the mobile device can monitor, the same reference signals for two different BFD / BFR procedures (i.e., a BFD / BFR procedure performed based on the reception and processing of one or more first receive beams and their associated one or more first reference signals, and another BFD / BFR procedure performed based on the reception and processing of one or more second receive beams and their associated one or more second reference signals).

[0122] In other aspects of the present disclosure, one or more first reference signals may be a subset of one or more second reference signals. In these aspects of the present disclosure, a base station may reuse and a mobile device may monitor a subset of one or more second reference signals to perform the BFD / BFR process performed based on the reception and processing of one or more first received beams and their associated one or more first reference signals.

[0123] In certain aspects of the present disclosure, the frequency and / or time resources allocated for one or more first reference signals may at least partially overlap with the frequency and / or time resources allocated for one or more second reference signals. For example, in one aspect of the present disclosure, one or more first reference signals and one or more second reference signals may have overlapping frequency resources. In another aspect of the present disclosure, one or more first reference signals and one or more second reference signals may have overlapping time resources. In yet another aspect of the present disclosure, one or more first reference signals and one or more second reference signals may have overlapping frequency and time resources.

[0124] According to certain aspects, the configuration of one or more first reference signals, one or more second reference signals, and different RSRP thresholds may be signaled from the base station to the mobile device. For example, in certain aspects, the mobile device may receive from the base station the configuration of at least one of one or more first reference signals, one or more second reference signals, and different RSRP thresholds.

[0125] Figure 8 is a block diagram showing a method for performing beam failure detection and recovery for a high-priority or broadcast CORESET in a wireless communication system according to certain aspects of the present disclosure. Aspects of method 800 may be implemented using aspects of the present disclosure described with respect to Figures 1 - 5 , Figure 7A and Figure 7B . For example, referring to Figure 2 , the controller / processor 240 of base station 105 may control base station 105 to perform the steps of method 800. Specifically, method 800 includes the step of receiving, by the processor at block 802, a first indication of a failure in wireless communication performed using one or more first received beams from the mobile device. For example, referring again to Figure 7A and Figure 7B , at block 724, as part of the BFR process, the base station may receive an indication of a failure in wireless communication performed using one or more first received beams 704 from the mobile device.

[0126] At block 804, method 800 includes the step of receiving, by the processor, a second indication of a failure in wireless communication performed using one or more second received beams from the mobile device, the second indication being different from the first indication. For example, referring toFigure 7B At block 774, as part of the BFR process, the base station may receive an indication of a failure in wireless communication performed using one or more second receive beams from a mobile device.

[0127] Those skilled in the art will appreciate that any of a variety of different technologies and techniques may be used to represent information and signals. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0128] Figure 6 and Figure 8 The functional blocks and modules in may include a processor, electronics, hardware devices, electronic components, logic circuits, memory, software code, firmware code, etc., or any combination thereof.

[0129] Those skilled in the art should also understand that the various illustrative logical blocks, modules, circuits, and algorithmic steps described in connection with the present disclosure may be implemented as electronic hardware, computer software, or a combination of both. To clearly illustrate this interchangeability of hardware and software, the various illustrative components, blocks, modules, circuits, and steps have been generally described in terms of their functionality above. Implementing such functionality as hardware or software depends on the particular application and the design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in different ways for each particular application, but such implementation decisions should not be construed as causing a departure from the scope of the present disclosure. Those skilled in the art will also readily recognize that the order or combination of components, methods, or interactions described herein are merely examples, and the components, methods, or interactions of the various aspects of the present disclosure may be combined or performed in ways other than those illustrated and described herein.

[0130] Various illustrative logical blocks, modules, and circuits described in connection with the present disclosure may be implemented or performed using a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (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 general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, several microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0131] The steps of the methods or algorithms described in connection with the content disclosed herein may be embodied directly in hardware, software modules executed by a processor, or a combination of both. The software modules may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium may be connected to the processor such that the processor can read information from, and write information to, the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and the storage medium may be located in an ASIC. The ASIC may be located in a user terminal. In an alternative, the processor and the storage medium may be located in the user terminal as discrete components.

[0132] In one or more exemplary designs, the described functionality may be implemented using hardware, software, firmware, or any combination thereof. When implemented in software, the functionality may be stored as one or more instructions or code on or transmitted over a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A computer-readable storage medium may be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instruction or data structures and that can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor. Additionally, a connection may be appropriately termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL), then the coaxial cable, fiber optic cable, twisted pair, or DSL is included in the definition of the 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 with lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0133] As used herein (which includes the claims), when the term "and / or" is used in a list of two or more items, it means that any one of the listed items can be used by itself, or any combination of two or more of the listed items can be used. For example, if a complex is described as containing components A, B, and / or C, the complex can contain A alone; B alone; C alone; a combination of A and B; a combination of A and C; a combination of B and C; or a combination of A, B, and C. Further, as used herein (which includes the claims), the "or" used in list items that end with "at least one of" indicates a disjunctive list, such that for example the list "at least one of 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), or any one of any combination thereof.

[0134] A prior description of the present disclosure is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the spirit or scope of the present disclosure. Thus, the present disclosure is not intended to be limited to the examples and designs described in this application, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of wireless communication performed by a processor of a user equipment (UE), comprising: monitoring one or more first reference signals associated with wireless communication performed using one or more first receiving beams; monitoring one or more second reference signals associated with wireless communication performed using one or more second receiving beams; initiating a first beam failure recovery process for the one or more first receiving beams in response to detecting a failure in the wireless communication performed using the one or more first receiving beams; and initiating a second beam failure recovery process for the one or more second receiving beams in response to detecting a failure in the wireless communication performed using the one or more second receiving beams, wherein: the wireless communication performed using the one or more first receiving beams includes receiving broadcast control information related to more than one mobile device, the wireless communication performed using the one or more second receiving beams includes receiving unicast control information related to a single mobile device, and the first beam failure recovery process is different from the second beam failure recovery process, the first beam failure recovery process is applicable to the one or more first receiving beams for receiving the broadcast control information, and the second beam failure recovery process is applicable to the one or more second receiving beams for receiving the unicast control information.

2. The method according to claim 1, further comprising: when no failure in the wireless communication performed using the one or more second receiving beams is detected during the period of initiating the first beam failure recovery process for the one or more first receiving beams, avoiding initiating the second beam failure recovery process for the one or more second receiving beams during the period of initiating the first beam failure recovery process for the one or more first receiving beams.

3. The method according to claim 1, further comprising: detecting a first failure in the wireless communication performed using the one or more first receiving beams, at least in part based on the monitoring of the one or more first reference signals; detecting a second failure in the wireless communication performed using the one or more second receiving beams, at least in part based on the monitoring of the one or more second reference signals, wherein, in addition to initiating the first beam failure recovery process for the one or more first receiving beams, the second beam failure recovery process for the one or more second receiving beams is also initiated.

4. The method according to claim 3, further comprising: sending a first indication of a failure in the wireless communication performed using the one or more second receiving beams to a network entity, wherein at least one of the frequency resource or the time resource for sending the first indication of the failure in the wireless communication performed using the one or more second receiving beams is different from the frequency resource or the time resource for sending an indication of a failure in the wireless communication performed using the one or more first receiving beams.

5. The method according to claim 1, wherein, the one or more first receiving beams and the one or more second receiving beams are associated with different control resource sets.

6. The method according to claim 1, wherein, the one or more first receiving beams have the same frequency and time resources as the one or more second receiving beams.

7. The method according to claim 1, wherein, the one or more first reference signals and the one or more second reference signals are the same.

8. The method according to claim 1, wherein, the one or more first reference signals are a subset of the one or more second reference signals.

9. The method according to claim 1, wherein, the frequency resources, time resources or a combination thereof allocated for the one or more first reference signals and the frequency resources, time resources or a combination thereof allocated for the one or more second reference signals are at least partially overlapped.

10. The method according to claim 1, further comprising: sending an indication of a failure in the wireless communication performed using the one or more first receiving beams to a network entity.

11. The method according to claim 10, wherein, sending the indication of the failure in the wireless communication performed using the one or more first receiving beams to the network entity includes: using a transmission beam of the wireless communication associated with unicast control information related to a single mobile device to send the indication.

12. The method according to claim 10, wherein, sending the indication of the failure in the wireless communication performed using the one or more first receiving beams to the network entity includes: sending the indication in a physical uplink control channel (PUCCH).

13. The method according to claim 10, further comprising: sending, together with an indication of a failure in the wireless communication, a second indication of one or more candidate beams that can be used for the wireless communication instead of the one or more first receiving beams; and receiving at least one of the following: a third indication of one or more other receiving beams for the wireless communication instead of the one or more first receiving beams; or, a fourth indication of using the one or more candidate beams for the wireless communication instead of the one or more first receiving beams.

14. The method according to claim 10, further comprising: receiving a second indication of using at least one second receiving beam among the one or more second receiving beams for the wireless communication instead of the one or more first receiving beams, wherein at least one second receiving beam among the indicated one or more second receiving beams is used to resume the wireless communication associated with the one or more first receiving beams before a timer associated with a beam failure recovery process for the one or more first receiving beams expires.

15. The method according to claim 1, wherein, The wireless communication performed using the one or more first receive beams includes the wireless communication within a first BWP, and wherein the wireless communication performed using the one or more second receive beams also includes the wireless communication within the first BWP.

16. The method according to claim 1, wherein, the first beam failure recovery process is performed independently of the second beam failure recovery process, and wherein the broadcast control information includes high-priority information.

17. The method according to claim 1, wherein, in addition to initiating the first beam failure recovery process for the one or more first receive beams, a second beam failure recovery process for the one or more second receive beams is also initiated.

18. An apparatus configured for wireless communication, the apparatus comprising: at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured to: monitor one or more first reference signals associated with wireless communication performed using one or more first receive beams; monitor one or more second reference signals associated with wireless communication performed using one or more second receive beams; initiate a first beam failure recovery process for the one or more first receive beams in response to detecting a failure in the wireless communication performed using the one or more first receive beams; and initiate a second beam failure recovery process for the one or more second receive beams in response to detecting a failure in the wireless communication performed using the one or more second receive beams, wherein: the wireless communication performed using the one or more first receive beams includes receiving broadcast control information related to more than one mobile device, the wireless communication performed using the one or more second receive beams includes receiving unicast control information related to a single mobile device, and the first beam failure recovery process is different from the second beam failure recovery process, the first beam failure recovery process is applicable to the one or more first receive beams for receiving the broadcast control information, and the second beam failure recovery process is applicable to the one or more second receive beams for receiving the unicast control information.

19. The apparatus according to claim 18, wherein, the at least one processor is further configured to: when no failure in the wireless communication performed using the one or more second receive beams is detected during the period of initiating the first beam failure recovery process for the one or more first receive beams, avoid initiating the second beam failure recovery process for the one or more second receive beams during the period of initiating the first beam failure recovery process for the one or more first receive beams.

20. The apparatus according to claim 18, wherein, the at least one processor is further configured to: Detect a first fault in the wireless communication performed using the one or more first receive beams, at least in part based on monitoring of the one or more first reference signals; Detect a second fault in the wireless communication performed using the one or more second receive beams, at least in part based on monitoring of the one or more second reference signals, wherein, in addition to initiating the first beam failure recovery process for the one or more first receive beams, a second beam failure recovery process for the one or more second receive beams is also initiated.

21. The apparatus according to claim 18, wherein, the at least one processor is further configured to: Send an indication of a fault in the wireless communication performed using the one or more first receive beams to a network entity.

22. The apparatus according to claim 21, wherein, the at least one processor is further configured to: Send, together with an indication of a fault in the wireless communication, an indication of one or more candidate beams that can be used for the wireless communication instead of the one or more first receive beams; and Receive at least one of the following: A third indication of one or more other receive beams for the wireless communication instead of the one or more first receive beams; or, A fourth indication of using the one or more candidate beams for the wireless communication instead of the one or more first receive beams.

23. The apparatus according to claim 21, wherein, the at least one processor is further configured to: Receive a second indication of using at least one of the one or more second receive beams for the wireless communication instead of the one or more first receive beams, wherein at least one of the indicated one or more second receive beams is used to resume the wireless communication associated with the one or more first receive beams before a timer associated with the beam failure recovery process for the one or more first receive beams expires.

24. A method of wireless communication performed by a processor, comprising: Receiving, from a mobile device, a first indication of a fault in wireless communication performed using one or more first receive beams; and Receiving, from the mobile device, a second indication of a fault in the wireless communication performed using one or more second receive beams that is different from the first indication, wherein the wireless communication performed using the one or more first receive beams includes communication associated with broadcast control information related to more than one mobile device, the wireless communication performed using the one or more second receive beams includes communication associated with unicast control information related to only the mobile device, the first indication of the fault is received in response to a first beam failure recovery process performed by the mobile device and applicable to the one or more first receive beams for receiving the broadcast control information, and The second indication of the fault is received in response to a second beam fault recovery procedure, which is different from the first beam fault recovery procedure, performed by the mobile device, and applicable to the one or more second receiving beams for receiving the unicast control information.

25. The method according to claim 24, further comprising: receiving, together with the first indication of a fault in the wireless communication performed using the one or more first receiving beams, a third indication of one or more candidate beams that can be used for the wireless communication in place of the one or more first receiving beams; and transmitting at least one of the following: a fourth indication of one or more other receiving beams for the wireless communication in place of the one or more first receiving beams; or, a fifth indication of using the one or more candidate beams for the wireless communication in place of the one or more first receiving beams.

26. The method according to claim 24, further comprising: transmitting a third indication of using at least one of the one or more second receiving beams for the wireless communication in place of the one or more first receiving beams.

27. The method according to claim 24, wherein the wireless communication performed using the one or more first receiving beams includes the wireless communication within a first BWP, and wherein the wireless communication performed using the one or more second receiving beams also includes the wireless communication within the first BWP.

28. An apparatus configured for wireless communication, the apparatus comprising: at least one processor; and a memory coupled to the at least one processor, wherein the at least one processor is configured to: receive, from a mobile device, a first indication of a fault in the wireless communication performed using one or more first receiving beams; and receive, from the mobile device, a second indication of a fault in the wireless communication performed using one or more second receiving beams that is different from the first indication, wherein the wireless communication performed using the one or more first receiving beams includes communication associated with broadcast control information related to more than one mobile device, the wireless communication performed using the one or more second receiving beams includes communication associated with unicast control information related to a single mobile device, the first indication of the fault is received in response to a first beam fault recovery procedure, which is performed by the mobile device and applicable to the one or more first receiving beams for receiving the broadcast control information, and the second indication of the fault is received in response to a second beam fault recovery procedure, which is different from the first beam fault recovery procedure, performed by the mobile device, and applicable to the one or more second receiving beams for receiving the unicast control information.

29. The apparatus according to claim 28, wherein the at least one processor is further configured to: Receive a third indication of one or more candidate beams that can be used for the wireless communication in place of the one or more first receive beams, along with the first indication of a fault in the wireless communication performed using the one or more first receive beams; And Transmit at least one of the following: A fourth indication of one or more other receive beams for the wireless communication in place of the one or more first receive beams; or, A fifth indication to use the one or more candidate beams for the wireless communication in place of the one or more first receive beams.

30. The apparatus according to claim 28, Wherein, The at least one processor is further configured to: Transmit a third indication to use at least one second receive beam among the one or more second receive beams for the wireless communication in place of the one or more first receive beams.

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