Uplink resources for beam recovery

Abstract

Methods, systems, and devices for wireless communication are described. Uplink resources can be allocated for transmission of beam recovery messages. For example, a user equipment (UE) communicating in a system that supports beamformed transmissions can receive a configuration from a base station for resources, where the resources can be used for beam recovery signaling. The UE can identify a beam failure on one or more active beams used to communicate with the base station, and the UE can transmit a beam recovery message to the base station. In this case, the beam recovery message can be transmitted in accordance with the configuration received from the base station, such that the beam recovery message is transmitted using the beam recovery resources. In some cases, the configuration can be received at the UE from the base station via radio resource control (RRC) signaling or via system information broadcast.

Description

[0001] This application is a divisional application of Chinese patent application No. 201880009745.0, filed on February 9, 2018.

[0002] Cross-references

[0003] This patent application claims priority to U.S. Patent Application No. 15 / 892,292, filed February 8, 2018, entitled “Uplink Resources For Beam Recovery”, and U.S. Provisional Patent Application No. 62 / 457,704, filed February 10, 2017, entitled “Uplink Resources For Beam Recovery”, each of which has been assigned to the assignee of this application. Technical Field

[0004] In general, the following text relates to wireless communication, and more specifically, to uplink resources used for beam recovery. Background Technology

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, and so on. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, and Orthogonal Frequency Division Multiple Access (OFDMA) systems (e.g., Long Term Evolution (LTE) systems or New Radio (NR) systems). A wireless multiple access communication system may include several base stations or access network nodes, each of which simultaneously supports communication with multiple communication devices (which may otherwise be referred to as User Equipment (UE)).

[0006] Some wireless communication systems (e.g., NR systems) can operate in frequency ranges associated with beamforming transmissions between wireless devices. For example, transmissions in the mmW frequency range may be associated with increased signal attenuation (e.g., path loss) compared to transmissions in non-millimeter-wave (mmW) frequency ranges. As a result, signal processing techniques such as beamforming can be used to coherently combine energy and overcome path loss in these systems. In some cases, one or more active beams between two wireless devices may become misaligned. Upon detecting such misalignment (or beam failure), the UE may attempt to access uplink resources to reconnect to the serving cell; however, some uplink resources used to transmit the attempted beam recovery may be associated with limited throughput or higher latency, or both. Therefore, improved techniques for allocating uplink resources for beam recovery are expected. Summary of the Invention

[0007] The described techniques relate to improved methods, systems, devices, or apparatuses for supporting uplink resources for beam recovery. Typically, the described techniques provide the configuration of dedicated resources for one or more UEs to transmit beam recovery requests to a base station. In some cases, these resources may be dynamically or semi-statically configured by the base station and transmitted to one or more UEs. Using the techniques described herein, a UE can determine that a beam has failed on one or more active beams (e.g., due to misalignment) and use the configured resources to transmit a beam recovery message. In some aspects, one or more downlink beams (e.g., each of which may have an associated reference signal) may be associated with equivalent uplink resources on which the UE can transmit beam recovery messages. In some examples, the beam recovery message may contain measurements or other information that can help the base station reconnect with the UE.

[0008] A method for wireless communication is described. The method may include: receiving configuration for beam recovery resources; identifying beam failures of one or more active beams used for communication with a base station; and, based at least in part on the identified beam failures, using the beam recovery resources to send a beam recovery message to the base station according to the received configuration.

[0009] An apparatus for wireless communication is described. The apparatus may include: a unit for receiving a configuration for beam recovery resources; a unit for identifying beam failures of one or more active beams used for communicating with a base station; and a unit for sending a beam recovery message to the base station, based at least in part on the identified beam failures and according to the received configuration, using the beam recovery resources.

[0010] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be operable to cause the processor to perform the following operations: receive configuration for beam recovery resources; identify beam failures of one or more active beams used for communication with a base station; and, based at least in part on the identified beam failures, send a beam recovery message to the base station using the beam recovery resources, according to the received configuration.

[0011] A non-transitory computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include instructions operable to cause a processor to perform the following operations: receive a configuration for beam recovery resources; identify a beam failure of one or more active beams used for communication with a base station; and, based at least in part on the identified beam failure, send a beam recovery message to the base station using the beam recovery resources, according to the received configuration.

[0012] Examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: a process, feature, unit, or instruction for receiving a message from a base station in response to a transmitted beam recovery message, the message including an indication of a set of reference signals for beam refinement. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, transmitting a beam recovery message to a base station includes: transmitting the beam recovery message on one or more resources in one or more beam directions.

[0013] In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, receiving configuration for beam recovery resources includes receiving the configuration as part of Radio Resource Control (RRC) signaling from a base station or as part of a system information broadcast from a base station. Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include: a process, feature, unit, or instruction for receiving an indication of enabling the use of beam recovery resources for transmitting beam recovery messages, wherein transmitting beam recovery messages may be at least partially based on the indication.

[0014] Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: a process, feature, unit, or instruction for receiving an indication regarding disabling the use of beam recovery resources for transmitting beam recovery messages, wherein transmitting the beam recovery message may be at least partially based on the indication. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the configuration includes UE-specific configurations for beam recovery resources. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the configuration includes indications for multiple beams used to transmit beam recovery messages, the indications being at least partially based on a signal-to-noise ratio (SNR) associated with the UE, and wherein transmitting the beam recovery message includes: transmitting the beam recovery message using at least one of the multiple beams.

[0015] In some examples of the methods, apparatuses and non-transitory computer-readable media described above, the configuration includes indications of the following: the system frame number (SFN) corresponding to the beam recovery resource, the subframe index (SFI) corresponding to the beam recovery resource, the period corresponding to the beam recovery resource, one or more resource elements (REs) corresponding to the beam recovery resource, or a combination thereof.

[0016] In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, beam recovery resources occupy a first region of resources, which may be different from a second region of resources allocated for the transmission of random access messages. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the configuration includes an indication of the mapping between downlink beams and beam recovery resources from a base station.

[0017] Examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include: procedures, features, units, or instructions for sending a scheduling request (SR) to a base station based on a received configuration, using beam recovery resources. Examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include: procedures, features, units, or instructions for performing measurements on a set of reference signals associated with one or more active beams, wherein the beam recovery message includes a measurement report at least in part based on the performed measurements.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the measurement report includes Received Reference Signal Power (RSRP), Received Reference Signal Quality (RSRQ), Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), rank, or a combination thereof. In some examples of the methods, apparatus, and non-transitory computer-readable media described above, the set of reference signals includes synchronization signals, mobile reference signals, Channel State Information Reference Signals (CSI-RS), or a combination thereof.

[0019] Examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: processes, features, units, or instructions for determining mobility conditions associated with a UE, including the UE's orientation relative to a base station, the UE's location, its distance from the base station, or a combination thereof, wherein the beam recovery message includes an indication of the mobility condition. Examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: processes, features, units, or instructions for identifying antenna array information corresponding to one or more antenna arrays located at the UE, wherein the beam recovery message includes an indication of the antenna array information.

[0020] In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the antenna array information includes the number of antenna arrays located at the UE. Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include: a process, feature, element, or instruction for determining the identifier of a downlink beam from a base station, wherein the beam recovery message includes an indication of the identifier of the downlink beam.

[0021] A method for wireless communication is described. The method may include: communicating with one or more UEs using one or more active beams; transmitting configuration for beam recovery resources; and receiving one or more beam recovery messages on the beam recovery resources, the one or more beam recovery messages indicating beam failure of at least one of the one or more active beams.

[0022] An apparatus for wireless communication is described. The apparatus may include: a unit for communicating with one or more UEs using one or more active beams; a unit for transmitting configuration for beam recovery resources; and a unit for receiving one or more beam recovery messages on the beam recovery resources, the one or more beam recovery messages indicating beam failure of at least one of the one or more active beams.

[0023] Another apparatus for wireless communication is described. The apparatus may include a processor, a memory in electronic communication with the processor, and instructions stored in the memory. The instructions may be operable to cause the processor to perform the following operations: communicate with one or more UEs using one or more active beams; transmit configuration for beam recovery resources; and receive one or more beam recovery messages on the beam recovery resources, the one or more beam recovery messages indicating beam failure of at least one of the one or more active beams.

[0024] A non-transitory computer-readable medium for wireless communication is described. The non-transitory computer-readable medium may include instructions operable to cause a processor to perform the following operations: communicate with one or more UEs using one or more active beams; transmit configuration for beam recovery resources; and receive one or more beam recovery messages on the beam recovery resources, the one or more beam recovery messages indicating beam failure of at least one of the one or more active beams.

[0025] Examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: procedures, features, units, or instructions for transmitting a message to a UE in response to one or more received beam recovery messages, the messages including indications of a set of reference signals for beam refinement. Examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: procedures, features, units, or instructions for receiving one or more beam recovery messages, including receiving a measurement report from the UE. Examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: procedures, features, units, or instructions for determining a transmission beam direction based at least in part on a measurement report. Examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: procedures, features, units, or instructions for transmitting a message to a UE using the determined transmission beam direction.

[0026] Examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: procedures, features, units, or instructions for performing measurements of uplink signals on one or more active beams. Examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: procedures, features, units, or instructions for determining a transmission beam direction based at least in part on measurements of the uplink signals, wherein sending a message to the UE may be at least in part based on the transmission beam direction. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, receiving one or more beam recovery messages includes: receiving one or more beam recovery messages on a set of resources in one or more receive beam directions.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described above, sending a configuration for a beam recovery resource includes sending the configuration as part of RRC signaling or as part of a system information broadcast. Some examples of the methods, apparatus, and non-transitory computer-readable media described above may also include: a process, feature, unit, or instruction for sending an indication regarding enabling the use of a beam recovery resource for one or more beam recovery messages, wherein receiving one or more beam recovery messages may be at least partially based on the indication.

[0028] Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: processes, features, units, or instructions for sending an indication regarding disabling the use of beam recovery resources for one or more beam recovery messages, wherein receiving one or more beam recovery messages may be at least partially based on the indication. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, identifying a service level associated with a subset of one or more UEs, wherein sending configuration for beam recovery resources includes: sending configuration to a subset of one or more UEs at least partially based on the identified service level.

[0029] Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: procedures, features, elements, or instructions for identifying an SNR associated with a UE, wherein the configuration includes a UE-specific configuration based at least in part on beam recovery resources based on the identified SNR. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the configuration includes indications of multiple beams for each of one or more beam recovery messages.

[0030] Some examples of the methods, apparatuses, and non-transitory computer-readable media described above may further include: a process, feature, element, or instruction for identifying a payload associated with an uplink transmission from one or more UEs, wherein the configuration includes an indication of additional beam recovery resources allocated for one or more beam recovery messages, at least in part based on the identified payload. In some examples of the methods, apparatuses, and non-transitory computer-readable media described above, the beam recovery resources may be associated with a first area of ​​resources that is different from a second area of ​​resources allocated for the transmission of random access messages.

[0031] Examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include: processes, features, units, or instructions for identifying one or more reference signals associated with a downlink beam set. Examples of the methods, apparatuses, and non-transitory computer-readable media described above may also include: processes, features, units, or instructions for identifying a mapping between a beam recovery resource and a downlink beam set, at least in part based on one or more reference signals, wherein the configuration includes instructions for the mapping. Attached Figure Description

[0032] Figure 1 According to aspects of this disclosure, an example of a system for wireless communication that supports uplink resources for beam recovery is shown.

[0033] Figure 2 According to aspects of this disclosure, an example of a system for wireless communication that supports uplink resources for beam recovery is shown.

[0034] Figure 3 According to aspects of this disclosure, an example of a resource grid in a system supporting uplink resources for beam recovery is shown;

[0035] Figure 4 According to aspects of this disclosure, an example of a process flow in a system supporting uplink resources for beam recovery is shown.

[0036] Figures 5 to 7 According to an aspect of this disclosure, a block diagram of a device supporting uplink resources for beam recovery is shown.

[0037] Figure 8 According to an aspect of this disclosure, a block diagram of a system including a UE that supports uplink resources for beam recovery is shown.

[0038] Figures 9 to 11 According to an aspect of this disclosure, a block diagram of a device supporting uplink resources for beam recovery is shown.

[0039] Figure 12 According to aspects of this disclosure, a block diagram of a system including a base station supporting uplink resources for beam recovery is shown; and

[0040] Figures 13 to 18 According to aspects of this disclosure, a method for uplink resources used for beam recovery is shown. Detailed Implementation

[0041] Some wireless communication systems can operate in frequency ranges that support beamforming transmission between wireless devices. For example, communication in the mmW band may experience increased signal attenuation (e.g., path loss). As a result, signal processing techniques such as beamforming can be used to coherently combine energy and overcome path loss in these systems. In such systems, wireless devices such as UEs and base stations can communicate on one or more active beams, which may correspond to a transmit beam used at a transmitting device and a receive beam at a receiving device (e.g., comprising a beam pair). In some cases, the active beam pair may become misaligned (e.g., due to beam switching failure or signal blocking), preventing the UE and base station from communicating on the blocked active beam pair due to beam failure. The UE can detect the beam failure on the active beam used for communicating with the base station accordingly (e.g., by monitoring a subset of the reference signal).

[0042] To reconnect to the serving cell, a UE may require resources to send a beam recovery request (e.g., a beam failure recovery request), which can be defined in terms of time, frequency, and / or beam. In systems supporting multi-beam operation, a UE can use certain uplink resources to reconnect to the cell. For example, a UE may by default use SR resources or Random Access Channel (RACH) resources to transmit such a beam recovery request. However, these resources may be associated with limited throughput and / or high latency (e.g., because they may be contention-based resources or may be available with relatively low periodicity). Accordingly, some systems can support the configuration of one or more dedicated sets of resources for a UE (or multiple UEs) to send beam recovery requests, which can achieve faster, more robust, and more efficient recovery.

[0043] The techniques described herein typically provide the allocation of dedicated resources for the transmission of beam recovery messages. For example, a UE communicating in a system supporting beamforming transmission can receive configuration for uplink resources from a base station, where the uplink resources can be dedicated to beam recovery signaling. The UE can identify beam failures (e.g., due to path loss or interference) on one or more active beams used to communicate with the base station, and the UE can send a beam recovery message to the base station. In this case, the beam recovery message can be sent according to the configuration received from the base station, such that dedicated beam recovery resources are used for transmission. In some cases, the configuration can be received at the UE via RRC signaling or via system information broadcast from the base station. Additionally, the use of beam recovery resources can be enabled or disabled by indication from the base station (e.g., using lower-layer signaling), whereby the UE can send beam recovery messages on different resource sets based on whether the beam recovery resources are enabled or disabled. After the transmission of the beam recovery request message, the UE can monitor the response from the base station to the beam recovery request message.

[0044] First, aspects of this disclosure are described within the context of a wireless communication system. Then, further examples of an uplink resource grid and a process flow for transmitting beam recovery messages are provided. These aspects of the disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flowcharts relating to uplink resources for beam recovery.

[0045] Figure 1 Examples of a wireless communication system 100 are shown according to various aspects of this disclosure. The wireless communication system 100 includes a base station 105, a user interface unit (UE) 115, and a core network 130. In some examples, the wireless communication system 100 may be an LTE, an improved LTE (LTE-A) network, or an NR network. In some cases, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (i.e., mission-critical) communication, low-latency communication, and communication with low-cost and low-complexity devices. The wireless communication system 100 may support efficient use of uplink resources for beam recovery.

[0046] Base station 105 can wirelessly communicate with UE 115 via one or more base station antennas. Each base station 105 can provide communication coverage for a corresponding geographical coverage area 110. The communication link 125 shown in the wireless communication system 100 can include uplink transmission from UE 115 to base station 105 or downlink transmission from base station 105 to UE 115. Control information and data can be multiplexed on the uplink channel or downlink channel according to various technologies. For example, time division multiplexing (TDM), frequency division multiplexing (FDM), or hybrid TDM-FDM technologies can be used to multiplex control information and data on the downlink channel. In some examples, control information transmitted during the transmission time interval (TTI) of the downlink channel can be distributed among different control areas in a cascaded manner (e.g., between a common control area and one or more UE-specific control areas).

[0047] UE 115 can be distributed throughout the wireless communication system 100, and each UE 115 can be stationary or mobile. UE 115 can also be referred to as a mobile station, user station, mobile unit, user cell, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile user station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. UE 115 can also be a cellular phone, personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, tablet computer, laptop computer, cordless phone, personal electronic device, handheld device, personal computer, wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, machine-type communication (MTC) device, device, vehicle, etc.

[0048] Core network 130 can provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. At least some of the wireless devices in the network equipment, such as base station 105, may include sub-components such as access network entities, which may be examples of access node controllers (ANCs). Each access network entity can communicate with several UEs 115 through several other access network transport entities, each of which may be an example of a smart radio headend or a transmit / receive point (TRP). In some configurations, the functions of each access network entity or base station 105 may be distributed across various network equipment (e.g., radio headends and access network controllers) or consolidated into a single network equipment (e.g., base station 105).

[0049] Wireless communication system 100 can operate in the ultra-high frequency (UHF) frequency range using a frequency band from 700 MHz to 2600 MHz (2.6 GHz), but in some cases, wireless local area networks (WLANs) can use frequencies up to 4 GHz. This area can also be referred to as the decimeter band because the wavelength range ranges in length from approximately one decimeter to one meter. UHF waves can propagate primarily along the line of sight and may be blocked by buildings and environmental features. However, the waves can penetrate walls sufficiently to provide service to UE 115 located indoors. Compared to transmission at smaller frequencies (and longer waves) using the high frequency (HF) or very high frequency (VHF) portions of the spectrum, UHF wave transmission is characterized by smaller antennas and shorter distances (e.g., less than 100 km). In some cases, wireless communication system 100 can also utilize the extremely high frequency (EHF) portion of the spectrum (e.g., from 30 GHz to 300 GHz). This area can also be referred to as the millimeter band because the wavelength range ranges in length from approximately one millimeter to one centimeter. Therefore, EHF antennas may be even smaller and more closely spaced than UHF antennas. In some cases, this can facilitate the use of antenna arrays within the UE 115 (e.g., for directional beamforming). However, EHF transmissions may experience greater atmospheric attenuation and travel shorter distances than UHF transmissions.

[0050] Therefore, the wireless communication system 100 can support mmW communication between the UE 115 and the base station 105. Devices operating in the mmW or EHF band can have multiple antennas to allow beamforming. That is, the base station 105 can use multiple antennas or an antenna array to perform beamforming operations for directional communication with the UE 115. Beamforming (which can also be referred to as spatial filtering or directional transmission) is a signal processing technique that a transmitter (e.g., base station 105) can use to beamform and / or control the entire antenna beam towards the target receiver (e.g., UE 115). This can be achieved by combining elements in the antenna array such that signals transmitted at specific angles experience constructive interference while other signals experience destructive interference.

[0051] Multiple-input multiple-output (MIMO) wireless systems employ a transmission scheme between a transmitter (e.g., base station 105) and a receiver (e.g., UE 115), both equipped with multiple antennas. Some portions of the wireless communication system 100 may utilize beamforming. For example, base station 105 may have an antenna array with several rows and columns of antenna ports, which base station 105 may use for beamforming in its communication with UE 115. Signals may be transmitted multiple times in different directions (e.g., beamforming may be applied differently to each transmission). When the mmW receiver (e.g., UE 115) receives a synchronization signal, multiple beams (e.g., antenna subarrays) may be attempted.

[0052] In some cases, the antennas of base station 105 or UE 115 may be located within one or more antenna arrays (e.g., panels), which can support beamforming or MIMO operation. One or more base station antennas or antenna arrays may be juxtaposed at an antenna component such as an antenna tower. In some cases, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may use multiple antennas or antenna arrays to perform beamforming operations for directional communication with UE 115.

[0053] In some cases, the wireless communication system 100 may be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. In some cases, the Radio Link Control (RLC) layer may perform packet segmentation and reassembly for communication on logical channels. The Media Access Control (MAC) layer may perform priority processing and multiplexing of logical channels to transport channels. The MAC layer may also use Hybrid Automatic Repeat Request (HARQ) to provide retransmissions at the MAC layer to improve link efficiency. In the control plane, the RRC protocol layer may provide the establishment, configuration, and maintenance of RRC connections between the UE 115 and network devices or the core network 130 supporting radio bearers for user plane data. At the physical (PHY) layer, transport channels may be mapped to physical channels.

[0054] A resource element can consist of one symbol period and one subcarrier (15 kHz frequency range). A resource block can contain 12 consecutive subcarriers in the frequency domain and 7 consecutive OFDM symbols (1 time slot) in the time domain for the ordinary cyclic prefix in each OFDM symbol, or 84 resource elements. The number of bits carried by each resource element can depend on the modulation scheme (the configuration of symbols that can be selected during each symbol period). Therefore, the more resource blocks the UE 115 receives and the higher the modulation scheme, the higher the data rate can be.

[0055] The wireless communication system 100 can support operation on multiple cells or carriers, a feature that can be referred to as carrier aggregation (CA) or multi-carrier operation. A carrier can also be referred to as a component carrier (CC), layer, channel, etc. The terms "carrier," "component carrier," "cell," and "channel" are used interchangeably herein. The UE 115 can be configured with multiple downlink CCs and one or more uplink CCs for carrier aggregation. Carrier aggregation can be used in conjunction with frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0056] In some cases, the wireless communication system 100 may use enhanced component carrier (eCC). eCC can be characterized by one or more features including: wider bandwidth, shorter symbol duration, shorter TTI, and modified control channel configuration. In some cases, eCC may be associated with carrier aggregation configurations or dual connectivity configurations (e.g., when multiple serving cells have suboptimal or non-ideal backhaul links). eCC can also be configured for use in unlicensed spectrum or shared spectrum (where more than one operator is permitted to use the spectrum). eCC characterized by wider bandwidth may include one or more segments that a UE 115, which cannot monitor the entire bandwidth or preferably uses limited bandwidth (e.g., for power saving), may use.

[0057] Shared radio spectrum bands can be used in NR shared spectrum systems. For example, among other things, NR shared spectrum can use any combination of licensed, shared, and unlicensed spectrum. Flexibility in eCC symbol duration and subcarrier spacing can accommodate the use of eCC across multiple spectrums. In some examples, NR shared spectrum can specifically increase spectral utilization and efficiency through dynamic vertical (e.g., across frequency) and horizontal (e.g., across time) sharing of resources.

[0058] In some cases, wireless communication system 100 can utilize both licensed and unlicensed radio spectrum bands. For example, wireless communication system 100 can use LTE Licensed Assisted Access (LTE-LAA) or LTE Unlicensed (LTE U) radio access technologies or NR technologies in unlicensed bands such as the 5 GHz Industrial, Scientific, and Medical (ISM) band. When operating in unlicensed radio spectrum bands, wireless devices such as base station 105 and UE 115 can use a Listen-Before-Talk (LBT) procedure to ensure that the channel is idle before transmitting data. In some cases, operation in unlicensed bands can be based on a CA configuration that combines CC (Carrier Component) with operation in licensed bands. Operation in unlicensed spectrum can include downlink transmission, uplink transmission, or both. Duplexing in unlicensed spectrum can be based on FDD, TDD, or a combination of both.

[0059] In the wireless communication system 100, resources (e.g., uplink resources) can be allocated for the transmission of beam recovery messages. For example, a UE 115 communicating in the wireless communication system 100 can receive a configuration for resources from a base station 105, wherein the resources can be dedicated to beam recovery signaling. The UE 115 can identify beam failures (e.g., due to path loss or interference) on one or more active beams used for communicating with the base station 105, and the UE 115 can send a beam recovery message to the base station 105. In this case, the beam recovery message can be sent according to the configuration received from the base station 105, such that the beam recovery message is sent using dedicated beam recovery resources. In some cases, the configuration can be received from the base station 105 at the UE 115 via RRC signaling or via system information broadcast. Additionally, the use of beam recovery resources can be enabled or disabled by an indication from base station 105 (e.g., using Layer 1 (L1) (i.e., PHY layer) signaling or Layer 2 (L2) signaling), wherein UE 115 can send beam recovery messages on different resource sets based on whether beam recovery resources are enabled or disabled.

[0060] Figure 2 According to various aspects of this disclosure, examples of a wireless communication system 200 supporting uplink resources for beam recovery are shown. The wireless communication system 200 includes a base station 105-a and a UE 115-a, each of which can be as described in reference... Figure 1 Examples of corresponding devices described. The wireless communication system 200 can support the use of dedicated resources (e.g., time, frequency, and / or space resources) for the transmission of beam recovery messages.

[0061] The wireless communication system 200 can operate within a frequency range associated with beamforming transmission between base station 105-a and UE 115-a. For example, the wireless communication system 200 can operate using a mmW frequency range. As a result, signal processing techniques such as beamforming can be used to coherently combine energy and overcome path loss. For example, base station 105-a can include multiple antennas. Each antenna can transmit (or receive) a phase-shifted version of a signal, such that the phase-shifted versions constructively interfere with each other in some areas and destructively interfere with each other in other areas. Weights can be applied to the various phase-shifted versions of the signal, for example, to control the transmission in a desired direction. This technique (or similar techniques) can be used to increase the coverage area 110-a of base station 105-a, or otherwise benefit the wireless communication system 200.

[0062] Transmit beams 205-a and 205-b represent examples of beams on which data (e.g., control information) can be transmitted. Accordingly, each transmit beam 205 can be directed from base station 105-a to a different area of ​​coverage area 110-a, and in some cases, two or more beams can overlap. Transmit beams 205-a and 205-b can be transmitted simultaneously or at different times. In either case, UE 115-a is able to receive information transmitted using one or more transmit beams 205 via the corresponding receive beam 210.

[0063] In one example, UE 115-a may include multiple antennas and form one or more receive beams 210 (e.g., receive beams 210-a and 210-b). Receive beams 210-a and 210-b can each receive one of the transmit beams 205-a and 205-b (e.g., UE 115-a may be located within wireless communication system 200 such that UE 115-a receives both beamformed transmit beams 205). This approach can be called a receive diversity scheme. In some cases, each of the receive beams 210 can receive a single transmit beam 205 (e.g., receive beam 210-a can receive transmit beam 205-a with various path losses and multipath effects). In other words, each antenna of UE 115-a can receive transmit beams 205-a that have experienced different path losses or phase shifts (e.g., different phase shifts may be due to different path lengths between the base station 105-a and the corresponding antennas of UE 115-a), and appropriately combine the received signals from one or more receive beams 210. In other examples, a single receive beam 210 can receive multiple transmit beams 205.

[0064] The transmit beam 205 and the corresponding receive beam 210 can be referred to as a beam pair. Beam pairs can be established during cell acquisition (e.g., via a synchronization signal) or through a beam refinement process, wherein the UE 115-a and base station 105-a attempt various combinations of superior transmit and receive beams until a suitable beam pair is determined. Although the above example is described in relation to downlink transmission, the same concept can be extended to uplink transmission according to aspects of this disclosure. That is, in Figure 2 The received beam 210 shown can alternatively represent a transmit beam for uplink signals from UE 115-a, and base station 105-a can use one or more receive beams to receive uplink signals. In some cases, each beam pair can be associated with signal quality (e.g., so that UE 115-a and base station 105-a can preferably communicate on beam pairs with better signal quality).

[0065] As mentioned above, a significant challenge in some wireless systems (e.g., mmW systems) is high path loss. Accordingly, techniques that may not be present in traditional systems (e.g., 3G and 4G systems), such as hybrid beamforming, can be utilized to overcome path loss and improve communication efficiency. For example, hybrid beamforming can allow for multi-beam operation for users, which can enhance the link budget (e.g., resource efficiency) and SNR within a wireless communication system.

[0066] In some cases, base station 105-a and UE 115-a can communicate on one or more active beam pairs, as described above. Each beam pair can carry one or more channels. Examples of such channels include the Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH), Physical Uplink Shared Channel (PUSCH), and Physical Uplink Control Channel (PUCCH).

[0067] In multi-beam operation, one or more active beam pairs may become misaligned (e.g., this may be referred to herein as beam failure). This misalignment can be the result of beam switching failure, signal obstruction, etc. In such a scenario, base station 105-a and UE 115-a may be unable to communicate (e.g., data or control information) on the misaligned active beams.

[0068] In some cases, UE 115-a can detect beam failure by monitoring a subset of reference beams or signals (e.g., synchronization signals or reference signals). For example, these signals may include synchronization signals (e.g., an NR synchronization signal (NR-SS) comprising a primary synchronization signal (PSS) and a secondary synchronization signal (SSS)) and one or more reference signals (e.g., a mobile reference signal (MRS)). In other examples, these signals may include a synchronization signal block (SS block) comprising, for example, a PSS, an SSS, and / or a physical broadcast channel (PBCH). In some cases, these signals may be multiplexed (e.g., time or frequency multiplexing) in the same area of ​​a resource grid. In some cases, multiport transmission (e.g., a given analog beam may include up to eight-port digital transmission) may be used to transmit one or more reference signals. After detecting a beam failure (e.g., which may also be referred to as a link failure), UE 115-a may attempt to access uplink resources to reconnect to the serving cell (e.g., by sending information for the re-establishment of the beam pair). In the multi-beam operation described herein, uplink resources can be configured such that base station 105-a can create receive beams in those directions from which UE 115 is transmitting.

[0069] In some systems, SR resources and RACH resources can be multiplexed (e.g., time or frequency multiplexing) so that resource sets can overlap in time but occupy different resource blocks. SR and RACH resources can be included in a control region, which may alternatively be called the RACH. In some systems, NR-SS for a given active beam can be mapped to resources in the RACH region (e.g., such that the NR-SS of each beam is mapped to a separate resource in the RACH region). Accordingly, beam recovery requests can be transmitted using SR resources (e.g., or RACH resources) in the control region of the resource grid.

[0070] However, this implementation may have drawbacks. For example, the RACH area can carry a limited amount of information (e.g., because RACH and SR share resources). Alternatively, using RACH or SR resources for beam recovery may be associated with relatively high latency (e.g., because these resources may not be frequently available), resulting in a relatively long period (e.g., on the order of 100ms) before UE 115-a can send beam recovery information. Furthermore, because RACH resources may be contention-based, UE 115-a may not be able to access these periodically allocated resources. Due to the limited capacity of resources in the control area, the information included in the beam recovery request may also be limited. Accordingly, in some systems, (e.g., additional) resources may be allocated to UE 115-a, on which the beam recovery information is transmitted to base station 105-a.

[0071] In accordance with this disclosure, base station 105-a can configure dedicated resources (e.g., resource elements (REs)) for one or more UEs 115, enabling beam recovery to be not limited to NR-SS associated resources in the control area. In some cases, the configuration can be sent using RRC signaling or system information broadcasting. L1 / L2 signaling can be used to enable and disable the configuration. That is, in some cases, UE 115-a can be triggered to access additional resources for the beam recovery process (e.g., through resource permission from base station 105-a). Accordingly, the resources for beam recovery can be contention-free, and UE 115-a can access the dedicated resource when base station 105-a triggers (or permits) it. Additionally or alternatively, the configuration can be UE 115-specific (or a group of UEs 115). In some cases, the configuration can be service-dependent. For example, to reduce beam recovery delay, base station 105-a can configure the set of UEs 115 to have uplink resources that appear more frequently in time. Alternatively, in low-traffic scenarios (e.g., when UE115-a has a relatively small amount of data to transmit), SR resources in the RACH area may be sufficient (e.g., because they can be more latency-tolerant in such scenarios). In some respects, base station 105-a can configure UEs 115 with higher SNR to use any beam on the uplink for beam recovery.

[0072] In some cases, base station 105-a can specify SFN, period, RE, time slot or micro-time slot, SFI, etc., for uplink resources. For example, the number of REs configured per uplink beam can vary depending on the number of UEs 115 using the beam. Accordingly, base station 105-a can specify the total number of beam recovery requests to be made by UE 115-a, which can be based on the number of configured REs or on other conditions (e.g., timers). In some cases, base station 105-a can configure more frequency or time resources in some beams (e.g., for larger payloads) than in other beams. Additionally, the configured resources can be in a region different from the RACH region.

[0073] Base station 105-a can specify the relationship between downlink beams and uplink resources. That is, base station 105-a can provide equivalent uplink resources for each downlink beam. In some cases, the downlink beam can be based on one or more of the following: NR-SS, MRS, or CSI-RS (e.g., periodic CSI-RS). In this disclosure, each reference signal can be associated with its own dedicated uplink resources. The period of the dedicated uplink resources can be based on the period of the associated reference signal. That is, the period of the uplink resources can be greater than, equal to, or less than the period of the associated reference signal. For example, the period of the uplink resources can be a multiple (e.g., an integer multiple) of the associated reference signal. Different relationships between the periods of reference signals and uplink resources not stated herein are also contemplated, including those based on the relationship or correlation between uplink resources and one or more reference signals. In some cases, measurement reference signals (e.g., MRS and CSI-RS) can be transmitted more frequently than NR-SS.

[0074] UE 115-a can determine beam failure on one or more active beams and send beam recovery messages using configured resources. For example, UE 115-a can monitor a set of reference signals to determine if a beam failure has occurred (e.g., whether beam failure conditions have been met) and send a beam recovery message based on the determination that an active beam has failed. Beam recovery messages can be sent on one or more uplink resources and / or in one or more beam directions. The beam recovery message may contain measurements of the reference signals from one or more beams or one or more cells. In some cases, these measurements can be performed before and / or after a beam failure is detected. That is, in some cases, the period of the dedicated uplink resources may be lower than the period of the reference signals, allowing UE 115-a to continue measuring the reference signals while waiting for dedicated uplink resources. Reference signals may include NR-SS, MRS, and CSI-RS. Measurement results may include indications of RSRP, RSRQ, CQI, PMI, Rank Indicator (RI), etc. In some cases, UE 115-a may also provide directional information (e.g., the movement status of UE 115-a, including the direction of UE 115-a, distance from base station 105-a, orientation of UE 115-a, etc.) and / or UE panel information (e.g., the number of antennas or antenna arrays at UE 115-a).

[0075] In some cases, UE 115-a may specify a downlink beam identifier (e.g., explicitly and / or implicitly by using uplink resources appropriately mapped to a given downlink beam). For example, UE 115-a may identify one or more candidate beams that can be used for beam recovery within a beam recovery message (e.g., using a beam identifier). In this case, the beam recovery message may also include information about the signal quality of the candidate beams (e.g., based on measurements of a reference signal on the candidate beams). In other examples, UE 115-a may send information indicating the presence of candidate beams in a beam recovery request based on measurements performed.

[0076] Base station 105-a can receive one or more beam recovery messages from UE 115-a. Since the identifier of UE 115-a is known to base station 105-a, base station 105-a can respond to a subset of beam recovery messages. That is, in some cases, multiple UEs 115 can transmit simultaneously on the same resources, and base station 105-a can distinguish transmissions based on scrambling codes (e.g., the scrambling code could be based on the Cell Radio Network Temporary Identifier (C-RNTI) for UE 115 with an RRC connection). In some cases, base station 105-a can respond using acknowledgments of candidate beams indicated by UE 115-a, or it can indicate different beams for beam recovery. The beam selected by base station 105-a can depend on measurement reports received in the beam recovery message. For example, if a measurement report message suggests that UE 115-a can use the same receive beam to receive other beams (e.g., a refined beam), base station 105-a can choose to use another beam (e.g., a refined beam). In some cases, the transmit beam selected by base station 105-a may rely on uplink measurements performed at base station 105-a. The PDCCH sent to UE 115-a may indicate the presence of additional reference signals for beam refinement. In other examples, the beam may not be available for beam recovery.

[0077] Figure 3 According to various aspects of this disclosure, an example of a resource grid 300 in a system supporting dedicated uplink resources for beam recovery is shown. For example, the resource grid 300 may be provided by, as referenced Figure 1 and Figure 2 The resource grid 300 is used by the UE 115 described below. It can be associated with a given beam pair between the serving base station 105 (not shown) and the UE 115-b. For the sake of explanation, aspects of the resource grid 300 have been simplified. Accordingly, the arrangement and periodization of the various resources described below can be related to... Figure 3 The differences are depicted in the text.

[0078] Resource grid 300 may include a first resource subset 305-a and a second resource subset 305-b within the system bandwidth. The first and second resource subsets 305-a may correspond to multiple subcarriers 310 transmitted over several symbol periods 315 (e.g., OFDM symbols). A block spanning one symbol period 315 and one subcarrier 310 may be referred to as an RE. Alternatively, each block may span a group of subcarriers 310 (e.g., 12 subcarriers) and a subframe (e.g., TTI), such that each block may be referred to as a resource block (RB). Accordingly, the units of frequency and time used in this example may be arbitrary, such that they are used only for illustrative purposes. The first resource subset 305-a may be an example of a control resource (i.e., a resource on which control channel information can be transmitted). For example, the first resource subset 305-a may carry PUCCH and Physical RACH (PRACH) transmissions from one or more UEs 115. In some examples, PUCCH and / or PRACH transmissions may include the transmission of beam recovery messages using these channels. Additionally, the first resource subset 305-a may include RACH resource 325 and SR resource 320. In some cases, RACH resource 325 and SR resource 320 may be multiplexed such that they may overlap in time or frequency (e.g., occupy the same symbol period 315 or subcarrier 310), but occupy different REs (e.g., they do not overlap in both time and frequency).

[0079] The second resource subset 305-b can be an example of a resource within the data area of ​​the system bandwidth. In some respects, the bandwidth of the second resource subset 305-b can be wider than the bandwidth of the first resource subset 305-a. In some examples, resource 305-b can be used to carry PUSCH transmissions.

[0080] In some cases, UE 115-b can communicate with serving base station 105 on more than one active beam (e.g., active beams 330 and 335 in this example). Each active beam may have associated signal quality, and in some cases, UE 115-b may preferably communicate with serving base station 105 on the stronger beam (e.g., active beam 330, which has a relatively higher SNR than the other active beam). Each active beam 330, 335 may be an example of a downlink receive beam, as shown in reference. Figure 2 As described. Accordingly, each active beam 330, 335 can be used to receive one or more reference signals (e.g., NR-SS, MRS, CSI-RS, etc.) from base station 105. UE 115-b can monitor these reference signals in the corresponding active beams 330, 335 (e.g., for detecting beam failure).

[0081] In some instances, active beam 330 may experience beam failure (e.g., due to signal obstruction, movement of UE 115-b, etc.). Accordingly, UE 115-b may not receive one or more reference signals from active beam 330. In some cases, UE 115-b may attempt to report beam failure to serving base station 105 using SR resource 320 and / or RACH resource 325. That is, each active beam 330, 335 may have an associated set of SR resource 320 and / or RACH resource 325 on which beam recovery information can be transmitted. However, SR resource 320 and RACH resource 325 may occur relatively infrequently within resource grid 300. Furthermore, these resources may be examples of contention-based resources, such that even when they do occur, UE 115-b may not be able to access them.

[0082] Therefore, in some cases, base station 105 may additionally or alternatively configure dedicated resources within the second resource subset 305-b for transmitting beam recovery information. In some cases, dedicated resources may be mapped to specific reference signals and / or specific active beams 330, 335. For example, active beam 330 may carry one or more of NR-SS, MRS, and CSI-RS. Each of these reference signals may have a dedicated resource set on which beam failure information can be transmitted. Alternatively, one or more of these reference signals may share resources. For example, UE 115-b may be configured to use SR resource 320 to report NR-SS failure of active beam 330, use dedicated uplink resource 340-a to report MRS failure of active beam 330, and use dedicated uplink resource 340-b to report CSI-RS failure of active beam 330. Other mappings for reference signals targeting downlink active beam 330 are possible. In some cases, MRS and / or CSI-RS can be transmitted more frequently than NR-SS. In some cases, dedicated uplink resource 340 can occur less frequently than the associated reference signal.

[0083] Alternatively, different resource sets can be reserved for beam failure recovery requests for different beams. For example, in addition to dedicated uplink resource 340 for active beam 330, one or more dedicated uplink resource sets 345 can be reserved to send beam recovery information for active beam 335. In some cases, dedicated uplink resources 340 and 345 may appear on the same resource block, but can be distinguished because active beams 330 and 335 can cover different directions. Such frequency reuse may not be possible in RACH resource 325 (e.g., because RACH resource 325 can be widely allocated in all directions). In some cases, multiple UEs 115 can transmit within a given dedicated uplink resource set 340, 345. Each UE 115 can be associated with a different C-RNTI, allowing each UE 115 to scramble transmissions on dedicated uplink resources 340, 345 according to its respective C-RNTI. Such reuse may not be possible if UE 115 can use RACH resource 325 with one or more public identifiers.

[0084] In some cases, dedicated uplink resources 340 and 345 can be configured to appear more frequently than RACH resource 325 or SR resource 320. Alternatively, dedicated uplink resources 340 and 345 can support higher data rates than RACH resource 325 or SR resource 320 (e.g., wider bandwidth, longer duration, support for higher modulation and coding schemes (MCS), etc.). Accordingly, dedicated uplink resources 340 and 345 can carry additional beam recovery information, as referred to above. Figure 2 As described. In some examples, the additional information carried in dedicated uplink resources 340, 345 may include the SR sent to base station 105 (e.g., included in a beam recovery request message).

[0085] In some cases, UE 115-b may by default attempt to send beam recovery messages on SR resource 320. In some examples, UE 115-b may be unable to access SR resource 320 and may subsequently attempt to access RACH resource 325. UE 115-b may (e.g., via RRC signaling) receive configuration specifying which resources are dedicated to beam recovery message transmission (e.g., which time, frequency, and beam resources can be used), and UE 115-b may independently decide to access dedicated uplink resources 340, 345. Alternatively or additionally, UE 115-b may be triggered (e.g., via L1 / L2 signaling) to use these dedicated uplink resources 340, 345.

[0086] Figure 4Based on various aspects of this disclosure, an example of process flow 400 in a system supporting uplink resources for beam recovery is shown. Process flow 400 includes a UE 115-c and a base station 105-b, each of which may be as described above. Figures 1 to 3 Examples of corresponding devices described. Process flow 400 can illustrate an example of the transmission of dedicated uplink resources for transmitting beam recovery messages.

[0087] At 405, UE 115-c and base station 105-b can establish communication using one or more active beams. At 410, base station 105-b can identify communication parameters associated with one or more active beams on which it communicates with UE 115-c. In some cases, base station 105-b can identify the service level associated with UE 115-c (e.g., or a group of UE 115s). Additionally or alternatively, base station 105-b can identify the SNR associated with the communication established with UE 115-c at 405. In some cases, base station 105-b can identify the payload associated with uplink transmissions from UE 115-c.

[0088] At 415, base station 105-b can transmit (e.g., and UE 115-c can receive) a configuration for uplink beam recovery resources. In some cases, the uplink beam recovery resources are associated with a first region of resources that differs from a second region of resources allocated for the transmission of random access messages (e.g., for RACH messages). In some cases, base station 105-b can transmit the configuration as part of RRC signaling. Alternatively or separately, the configuration can be transmitted using system information broadcast.

[0089] Accordingly, UE 115-c may receive the configuration from base station 105-b as part of RRC signaling or as part of system information broadcasting. In some examples, the configuration of uplink resources depends on one or more communication parameters determined at 410. For example, the uplink resource configuration may be based on an identified service level and sent to one or more UEs 115. Alternatively or additionally, the uplink resource configuration may be UE 115-c specific based on the SNR associated with UE 115-c. In some aspects, the configuration may include: an indication of additional beam recovery resources allocated for one or more beam recovery messages, at least based on the identified payload. In some cases, the configuration may include: an indication of the beam set for each of the one or more beam recovery messages.

[0090] In some cases, base station 105-b can identify one or more reference signals associated with the downlink beam set, and can identify the mapping between the uplink beam recovery resource and the downlink beam set based on the reference signals. Base station 105-b can include indications of the mapping as part of the configuration at 415. In some cases, the configuration includes indications of: the SFN corresponding to the uplink beam recovery resource, the SFI corresponding to the uplink beam recovery resource, the period corresponding to the uplink beam recovery resource, and one or more REs or combinations thereof corresponding to the uplink beam recovery resource.

[0091] At 420, base station 105-b can optionally enable or disable the use of uplink beam recovery resources for sending beam recovery messages. In some cases, L1 / L2 signaling can be used to send indications of enabling or disabling resource usage. At 425, UE 115-c can identify beam failure of one or more active beams used for communication established at 405.

[0092] At 430, UE 115-c may optionally perform measurements of various signals received from base station 105-b. In some cases, these measurements may be performed before and / or after beam failure is identified at 425. In some cases, UE 115-c may perform measurements of a set of reference signals. The set of reference signals may be associated with one or more active beams established at 405. In some cases, the set of reference signals includes synchronization signals, MRS, CSI-RS, or combinations thereof. In some cases, UE 115-c may determine mobility conditions associated with UE 115-c, including the direction of UE 115-c relative to base station 105-b, the azimuth of UE 115-c, the distance to base station 105-b, or combinations thereof. In some cases, UE 115-c may identify antenna array information corresponding to one or more antenna arrays located at UE 115-c. In some cases, the antenna array information includes the number of antenna arrays located at UE 115-c.

[0093] At 435, UE 115-c can, based on the beam failure identified at 425, use uplink beam recovery resources according to the received configuration to send (e.g., and base station 105-b can receive) a beam recovery message. The beam recovery message may include the transmission of a beam failure recovery request. In some cases, base station 105-b may receive one or more beam recovery messages on a resource set in one or more receiving beam directions. In some cases, UE 115-c may send beam recovery messages on one or more resources in one or more beam directions. In some aspects, beam recovery messages can be sent using at least one beam from a plurality of beams indicated in the configuration at 415 (e.g., based on the SNR associated with UE 115-c). In some examples, UE 115-c may send an SR to base station 105-b using uplink beam recovery resources according to the configuration received at 415. In some cases, UE 115-c can send beam recovery messages based on the indication at 420 regarding enabling or disabling the use of uplink beam resources for sending beam recovery messages.

[0094] In some examples, the beam recovery message may include a measurement report based on measurements performed at 430. For example, the measurement report may include RSRP, RSRQ, CQI, PMI, rank (e.g., RI), or combinations thereof. Additionally or alternatively, the beam recovery message may include an indication of mobility conditions determined at 430. In some cases, the beam recovery message may include an indication of antenna array information determined at 430. In some examples, UE 115-c may determine the identifiers of one or more downlink beams from base station 105-b, and may include an indication of the identifiers as part of the beam recovery message.

[0095] At 440, base station 105-b can determine the transmit beam direction based on the measurement report included in the beam recovery message received at 435. In some cases, base station 105-b can perform measurements of the uplink signal on one or more active beams and determine the transmit beam direction based on the measurements of the uplink signal. At 445, in response to the transmitted beam recovery message, base station 105-b can transmit (e.g., and UE 115-c can receive) a message including an indication of one or more reference signals for beam refinement. In some cases, the transmit beam direction determined at 440 can be used to transmit this message to UE 115-c.

[0096] Figure 5 According to various aspects of this disclosure, a block diagram 500 is shown of a wireless device 505 supporting uplink resources for beam recovery. The wireless device 505 may be as described with reference to... Figure 1 Examples of aspects of the described UE 115. Wireless device 505 may include receiver 510, UE beam recovery manager 515, and transmitter 520. Wireless device 505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0097] Receiver 510 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to uplink resources for beam recovery). This information can be transmitted to other components of the device. Receiver 510 can be a reference... Figure 8 Examples of aspects of the transceiver 835 described.

[0098] UE Beam Recovery Manager 515 can be used as a reference Figure 8 Examples of aspects of the described UE beam recovery manager 815. At least some of the UE beam recovery manager 515 and / or its various sub-components can be implemented using hardware, processor-executed software, firmware, or any combination thereof. When implemented using processor-executed software, the functions of the UE beam recovery manager 515 and / or at least some of its various sub-components can be performed by a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any combination thereof designed to perform the functions described in this disclosure.

[0099] The UE beam recovery manager 515 and / or at least some of its various sub-components may be physically located in various locations, including distributed portions that enable functionality by one or more physical devices at different physical locations. In some examples, according to various aspects of this disclosure, the UE beam recovery manager 515 and / or at least some of its various sub-components may be separate and distinct components. In other examples, according to various aspects of this disclosure, the UE beam recovery manager 515 and / or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to: I / O components, transceivers, network servers, another computing device, one or more other components described in this disclosure, or combinations thereof.

[0100] The UE beam recovery manager 515 can receive configuration for beam recovery resources, identify beam failures of one or more active beams used to communicate with the base station 105, and, based on the identified beam failures, send beam recovery messages to the base station 105 using the beam recovery resources according to the received configuration.

[0101] Transmitter 520 can transmit signals generated by other components of the device. In some examples, transmitter 520 can be co-located with receiver 510 in a transceiver module. For example, transmitter 520 can be a reference... Figure 8 Examples of aspects of the described transceiver 835. Transmitter 520 may include a single antenna, or it may include a collection of antennas.

[0102] Figure 6 According to various aspects of this disclosure, a block diagram 600 is shown of a wireless device 605 supporting uplink resources for beam recovery. The wireless device 605 may be as described with reference to... Figure 1 and 5 Examples of aspects of the described wireless device 505 or UE 115. Wireless device 605 may include a receiver 610, a UE beam recovery manager 615, and a transmitter 620. Wireless device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0103] Receiver 610 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to uplink resources for beam recovery). It can transmit this information to other components of the device. Receiver 610 can be a reference... Figure 8 Examples of aspects of the transceiver 835 described.

[0104] UE Beam Recovery Manager 615 can be used as a reference Figure 8 Examples of aspects of the described UE beam recovery manager 815. At least some of the UE beam recovery manager 615 and / or its various sub-components can be implemented using hardware, processor-executed software, firmware, or any combination thereof. When implemented using processor-executed software, the functions of the UE beam recovery manager 615 and / or at least some of its various sub-components can be performed by a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any combination thereof designed to perform the functions described in this disclosure.

[0105] The UE beam recovery manager 615 and / or at least some of its various sub-components may be physically located in various locations, including distributed components that enable functionality by one or more physical devices at different physical locations. In some examples, according to various aspects of this disclosure, the UE beam recovery manager 615 and / or at least some of its various sub-components may be separate and distinct components. In other examples, according to various aspects of this disclosure, the UE beam recovery manager 615 and / or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to: I / O components, transceivers, network servers, another computing device, one or more other components described in this disclosure, or combinations thereof. The UE beam recovery manager 615 may also include a resource configuration component 625, a beam failure component 630, and a UE beam recovery message manager 635.

[0106] Resource configuration component 625 can receive configuration for beam recovery resources. In some cases, receiving configuration for beam recovery resources includes receiving configuration from base station 105 as part of RRC signaling, or receiving configuration from base station 105 as part of system information broadcasting. In some examples, the configuration may include UE-specific configuration for beam recovery resources. In some cases, the configuration includes an indication of the beam set used to transmit beam recovery messages, wherein the indication may be based on the SNR associated with UE 115. In some cases, the configuration may include indications of the SFN corresponding to the beam recovery resource, the SFI corresponding to the beam recovery resource, the period corresponding to the beam recovery resource, one or more REs corresponding to the beam recovery resource, or a combination thereof. In some cases, the beam recovery resource may occupy a first area of ​​the resource, which is different from a second area of ​​the resource allocated for the transmission of random access messages (e.g., RACH). In some cases, the configuration may include an indication of the mapping between downlink beams from base station 105 and beam recovery resources.

[0107] The beam failure component 630 can identify beam failures of one or more active beams used for communication with base station 105. The UE beam recovery message manager 635 can send a beam recovery message to base station 105 using beam recovery resources based on the identified beam failure and according to the received configuration. In some cases, the UE beam recovery message manager 635 can receive an instruction to enable the use of beam recovery resources for sending the beam recovery message, wherein sending the beam recovery message is based on the instruction. Alternatively or additionally, the UE beam recovery message manager 635 can receive an instruction to disable the use of beam recovery resources for sending the beam recovery message. In some examples, sending a beam recovery message to base station 105 may include sending the beam recovery message using at least one beam from a beam set indicated by base station 105. In some cases, sending a beam recovery message to base station 105 includes sending the beam recovery message on one or more resources in one or more beam directions.

[0108] Transmitter 620 can transmit signals generated by other components of the device. In some examples, transmitter 620 can be co-located with receiver 610 in a transceiver module. For example, transmitter 620 can be a reference... Figure 8 Examples of aspects of the described transceiver 835. Transmitter 620 may include a single antenna, or it may include a collection of antennas.

[0109] Figure 7 Based on various aspects of this disclosure, a block diagram 700 is shown of a UE beam recovery manager 715 supporting uplink resources for beam recovery. The UE beam recovery manager 715 may be a reference... Figure 5 , 6 and Figure 8 Examples of aspects of the described UE beam recovery manager 515, UE beam recovery manager 615, or UE beam recovery manager 815. At least some of the UE beam recovery manager 715 and / or its various sub-components can be implemented using hardware, processor-executed software, firmware, or any combination thereof. If implemented using processor-executed software, the functions of the UE beam recovery manager 715 and / or at least some of its various sub-components can be performed by a general-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any combination thereof designed to perform the functions described in this disclosure.

[0110] The UE beam recovery manager 715 and / or at least some of its various sub-components may be physically located in various locations, including distributed components that enable functionality by one or more physical devices at different physical locations. In some examples, according to various aspects of this disclosure, the UE beam recovery manager 715 and / or at least some of its various sub-components may be separate and distinct components. In other examples, according to various aspects of this disclosure, the UE beam recovery manager 715 and / or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to: I / O components, transceivers, network servers, another computing device, one or more other components described in this disclosure, or combinations thereof. The UE beam recovery manager 715 may include a resource configuration component 720, a beam failure component 725, a UE beam recovery message manager 730, a beam refinement component 735, a scheduling request component 740, a signal measurement component 745, a mobility status component 750, an antenna information component 755, and a downlink beam component 760. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0111] Resource configuration component 720 can receive configuration for beam recovery resources. In some cases, receiving configuration for beam recovery resources includes receiving configuration from base station 105 as part of RRC signaling, or receiving configuration from base station 105 as part of system information broadcasting. In some examples, the configuration may include UE-specific configuration for beam recovery resources. In some cases, the configuration includes an indication of the beam set used to transmit beam recovery messages, wherein the indication may be based on the SNR associated with UE 115. In some cases, the configuration may include indications of the SFN corresponding to the beam recovery resource, the SFI corresponding to the beam recovery resource, the period corresponding to the beam recovery resource, one or more REs corresponding to the beam recovery resource, or a combination thereof. In some cases, the beam recovery resource may occupy a first area of ​​a resource, which is different from a second area of ​​a resource allocated for the transmission of random access messages (e.g., RACH). In some cases, the configuration may include an indication of the mapping between downlink beams from base station 105 and beam recovery resources.

[0112] The beam failure component 725 can identify beam failures of one or more active beams used for communication with base station 105. The UE beam recovery message manager 730 can send a beam recovery message to base station 105 using beam recovery resources based on the identified beam failure and according to the received configuration. In some cases, the UE beam recovery message manager 730 can receive an instruction to enable the use of beam recovery resources for sending the beam recovery message, wherein sending the beam recovery message is based on the instruction. Alternatively or additionally, the UE beam recovery message manager 730 can receive an instruction to disable the use of beam recovery resources for sending the beam recovery message. In some examples, sending a beam recovery message to base station 105 may include sending the beam recovery message using at least one beam from a beam set indicated by base station 105. In some cases, sending a beam recovery message to base station 105 includes sending the beam recovery message on one or more resources in one or more beam directions.

[0113] Beam refinement component 735 can receive a message from base station 105 in response to a transmitted beam recovery message, the message including an indication of a reference signal set for beam refinement. Scheduling request component 740 can send a SR to base station 105 using beam recovery resources, based on the received configuration. Signal measurement component 745 can perform measurements on the reference signal set, which is associated with one or more active beams. In this case, the beam recovery message can include a measurement report based on the performed measurements. In some cases, the measurement report includes RSRP, RSRQ, CQI, PMI, rank, or combinations thereof. In some cases, the reference signal set includes synchronization signals, mobile reference signals, CSI-RS, or combinations thereof.

[0114] Mobility status component 750 can determine mobility status associated with UE 115, including: UE 115's orientation relative to base station 105, UE 115's azimuth, distance from base station 105, or a combination thereof. In this case, the beam recovery message may include an indication of the mobility status. Antenna information component 755 can identify antenna array information corresponding to one or more antenna arrays located at UE 115, wherein the beam recovery message includes an indication of the antenna array information. In some cases, the antenna array information includes the number of antenna arrays located at UE 115. Downlink beam component 760 can determine the identifier of a downlink beam from base station 105, wherein the beam recovery message includes an indication of the identifier of the downlink beam.

[0115] Figure 8According to various aspects of this disclosure, a diagram of a system 800 including device 805 is shown, which supports uplink resources for beam recovery. Device 805 may be as described above (e.g., refer to...). Figure 1 , 5 and Figure 6 Examples of components of wireless device 505, wireless device 605, or UE 115, or components including wireless device 505, wireless device 605, or UE 115. Device 805 may include components for two-way voice and data communication, including components for transmitting communication and components for receiving communication, including UE beam recovery manager 815, processor 820, memory 825, software 830, transceiver 835, antenna 840, and I / O controller 845. These components may communicate electronically via one or more buses (e.g., bus 810). Device 805 may communicate wirelessly with one or more base stations 105.

[0116] Processor 820 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, central processing units (CPUs), microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 820 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 820. Processor 820 may be configured to execute computer-readable instructions stored in memory to perform various functions (e.g., functions or tasks supporting uplink resources for beam recovery).

[0117] Memory 825 may include random access memory (RAM) and read-only memory (ROM). Memory 825 may store computer-readable, computer-executable software 830, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, among other things, memory 825 may include a basic input / output system (BIOS) that controls basic hardware and / or software operations (e.g., interaction with peripheral components or devices).

[0118] Software 830 may include code for implementing aspects of this disclosure, including code for supporting uplink resources for beam recovery. Software 830 may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, software 830 may not be executed directly by a processor, but may instead enable a computer (e.g., when compiled and executed) to perform the functions described herein.

[0119] Transceiver 835 can communicate bidirectionally via one or more antennas, a wired link, or a wireless link, as described above. For example, transceiver 835 can represent a wireless transceiver and be able to communicate bidirectionally with another wireless transceiver. Transceiver 835 may also include a modem for modulating packets, providing modulated packets to the antenna for transmission, and demodulating packets received from the antenna. In some cases, the wireless device may include a single antenna 840. However, in some cases, the device may have more than one antenna 840, which is capable of transmitting or receiving multiple wireless transmissions concurrently.

[0120] The I / O controller 845 can manage input and output signals for device 805. The I / O controller 845 can also manage peripheral devices not integrated into device 805. In some cases, the I / O controller 845 can represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 845 can use, for example... Alternatively, it can be an operating system such as another known operating system. In other cases, the I / O controller 845 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 845 may be implemented as part of a processor. In some cases, a user may interact with the device 805 via the I / O controller 845 or via hardware components controlled by the I / O controller 845.

[0121] Figure 9 According to various aspects of this disclosure, a block diagram 900 is shown of a wireless device 905 supporting uplink resources for beam recovery. The wireless device 905 may be as described with reference to... Figure 1 Examples of aspects of the described base station 105 are provided. The wireless device 905 may include a receiver 910, a base station beam recovery manager 915, and a transmitter 920. The wireless device 905 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0122] Receiver 910 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to uplink resources for beam recovery). This information can be transmitted to other components of the device. Receiver 910 can be a reference... Figure 12 Examples of aspects of the transceiver 1235 described.

[0123] Base station beam recovery manager 915 can be used as a reference Figure 12Examples of aspects of the described base station beam recovery manager 1215. At least some of the base station beam recovery manager 915 and / or its various sub-components can be implemented using hardware, processor-executed software, firmware, or any combination thereof. When implemented using processor-executed software, the functions of the base station beam recovery manager 915 and / or at least some of its various sub-components can be performed by a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any combination thereof designed to perform the functions described in this disclosure.

[0124] The base station beam recovery manager 915 and / or at least some of its various sub-components may be physically located in various locations, including distributed portions that enable functionality by one or more physical devices at different physical locations. In some examples, according to various aspects of this disclosure, the base station beam recovery manager 915 and / or at least some of its various sub-components may be separate and distinct components. In other examples, according to various aspects of this disclosure, the base station beam recovery manager 915 and / or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to: I / O components, transceivers, network servers, another computing device, one or more other components described in this disclosure, or combinations thereof.

[0125] The base station beam recovery manager 915 can use one or more active beams to communicate with one or more UEs 115, send configurations for beam recovery resources, and receive one or more beam recovery messages on the beam recovery resources, the one or more beam recovery messages indicating beam failure of at least one of the one or more active beams.

[0126] Transmitter 920 can transmit signals generated by other components of the device. In some examples, transmitter 920 can be co-located with receiver 910 in a transceiver module. For example, transmitter 920 can be a reference... Figure 12 Examples of aspects of the described transceiver 1235. Transmitter 920 may include a single antenna, or it may include a collection of antennas.

[0127] Figure 10 According to various aspects of this disclosure, a block diagram 1000 is shown of a wireless device 1005 supporting uplink resources for beam recovery. The wireless device 1005 may be as described with reference to... Figure 1 and 9Examples of aspects of the described wireless device 905 or base station 105. Wireless device 1005 may include a receiver 1010, a base station beam recovery manager 1015, and a transmitter 1020. Wireless device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0128] Receiver 1010 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to uplink resources for beam recovery). It can transmit this information to other components of the device. Receiver 1010 can be a reference... Figure 12 Examples of aspects of the transceiver 1235 described.

[0129] Base station beam recovery manager 1015 can be used as a reference Figure 12 Examples of aspects of the described base station beam recovery manager 1215. At least some of the base station beam recovery manager 1015 and / or its various sub-components can be implemented using hardware, processor-executed software, firmware, or any combination thereof. When implemented using processor-executed software, the functions of the base station beam recovery manager 1015 and / or at least some of its various sub-components can be performed by a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any combination thereof designed to perform the functions described in this disclosure.

[0130] The base station beam recovery manager 1015 and / or at least some of its various sub-components may be physically located in various locations, including distributed components that enable functionality by one or more physical devices at different physical locations. In some examples, according to various aspects of this disclosure, the base station beam recovery manager 1015 and / or at least some of its various sub-components may be separate and distinct components. In other examples, according to various aspects of this disclosure, the base station beam recovery manager 1015 and / or at least some of its various sub-components may be combined with one or more other hardware components, including but not limited to: I / O components, transceivers, network servers, another computing device, one or more other components described in this disclosure, or combinations thereof. The base station beam recovery manager 1015 may also include a communication manager 1025, an uplink resource manager 1030, and a base station beam recovery message manager 1035.

[0131] The communication manager 1025 can communicate with one or more UEs 115 using one or more active beams. The uplink resource manager 1030 can send configurations for beam recovery resources. In some examples, the uplink resource manager 1030 can send instructions to enable the use of beam recovery resources for one or more beam recovery messages, wherein receiving beam recovery messages is based on these instructions. Alternatively, the uplink resource manager 1030 can send instructions to disable the use of beam recovery resources for one or more beam recovery messages. In some cases, the uplink resource manager 1030 can identify the mapping between beam recovery resources and downlink beam sets based on one or more reference signals, wherein the configuration includes instructions for the mapping.

[0132] In some cases, sending configuration for beam recovery resources includes sending the configuration as part of RRC signaling or system information broadcasting. In some cases, the configuration includes an indication of the beam set for each of one or more beam recovery messages. In some cases, the beam recovery resource is associated with a first area of ​​the resource, which differs from a second area resource allocated for the transmission of random access messages.

[0133] The base station beam recovery message manager 1035 can receive one or more beam recovery messages on beam recovery resources, indicating a beam failure of at least one active beam among one or more active beams. In some cases, receiving one or more beam recovery messages includes receiving measurement reports from one or more UEs 115. In some cases, receiving one or more beam recovery messages includes receiving one or more beam recovery messages on a resource set in one or more receive beam directions.

[0134] Transmitter 1020 can transmit signals generated by other components of the device. In some examples, transmitter 1020 can be co-located with receiver 1010 in a transceiver module. For example, transmitter 1020 can be a reference... Figure 12 Examples of aspects of the described transceiver 1235. Transmitter 1020 may include a single antenna, or it may include a collection of antennas.

[0135] Figure 11 According to various aspects of this disclosure, a block diagram 1100 is shown of a base station beam recovery manager 1115 supporting uplink resources for beam recovery. The base station beam recovery manager 1115 may be a reference... Figure 9 , 10 and Figure 12Examples of aspects of the described base station beam recovery manager 1215. At least some of the base station beam recovery manager 1115 and / or its various sub-components can be implemented using hardware, processor-executed software, firmware, or any combination thereof. If implemented using processor-executed software, the functions of the base station beam recovery manager 1115 and / or at least some of its various sub-components can be performed by a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any combination thereof designed to perform the functions described in this disclosure.

[0136] At least some of the sub-components of the base station beam recovery manager 1115 and / or its various sub-components may be physically located in various locations, including distributed components that enable functionality by one or more physical devices at different physical locations. In some examples, according to various aspects of this disclosure, at least some of the sub-components of the base station beam recovery manager 1115 and / or its various sub-components may be separate and distinct components. In other examples, according to various aspects of this disclosure, at least some of the sub-components of the base station beam recovery manager 1115 and / or its various sub-components may be combined with one or more other hardware components, including but not limited to: I / O components, transceivers, network servers, another computing device, one or more other components described in this disclosure, or combinations thereof. The base station beam recovery manager 1115 may include a communication manager 1120, an uplink resource manager 1125, a base station beam recovery message manager 1130, a reference signal manager 1135, a beam direction component 1140, an uplink signal measurement component 1145, a service manager 1150, an SNR component 1155, and a payload manager 1160. Each of these modules can communicate with each other directly or indirectly (e.g., via one or more buses).

[0137] The communication manager 1120 can communicate with one or more UEs 115 using one or more active beams. The uplink resource manager 1125 can send configurations for beam recovery resources. In some examples, the uplink resource manager 1125 can send instructions to enable the use of beam recovery resources for one or more beam recovery messages, wherein receiving beam recovery messages is based on these instructions. Alternatively, the uplink resource manager 1125 can send instructions to disable the use of beam recovery resources for one or more beam recovery messages. In some cases, the uplink resource manager 1125 can identify a mapping between beam recovery resources and downlink beam sets based on one or more reference signals, wherein the configuration includes instructions for the mapping.

[0138] In some cases, sending configuration for beam recovery resources includes sending the configuration as part of RRC signaling or system information broadcasting. In some cases, the configuration includes an indication of the beam set for each of one or more beam recovery messages. In some cases, the beam recovery resource is associated with a first area of ​​the resource, which differs from a second area resource allocated for the transmission of random access messages.

[0139] The base station beam recovery message manager 1130 can receive one or more beam recovery messages on beam recovery resources, indicating a beam failure of at least one active beam among one or more active beams. In some cases, receiving one or more beam recovery messages includes receiving measurement reports from one or more UEs 115. In some cases, receiving one or more beam recovery messages includes receiving one or more beam recovery messages on a resource set in one or more receive beam directions.

[0140] Reference signal manager 1135 can transmit messages in response to one or more received beam recovery messages, the messages including an indication of a set of reference signals used for beam refinement, and identification of one or more reference signals associated with the downlink beam set. Beam direction component 1140 can determine the transmit beam direction based on a measurement report, use the determined transmit beam direction to transmit messages to UE 115, and determine the transmit beam direction based on measurements of uplink signals, wherein transmitting messages to UE 115 is based on the transmit beam direction.

[0141] Uplink signal measurement component 1145 can perform uplink signal measurements on one or more active beams. Service manager 1150 can identify service levels associated with a subset of one or more UEs 115. In this case, sending configuration for beam recovery resources includes sending configuration to a subset of one or more UEs 115 based on the identified service level. SNR component 1155 can identify the SNR associated with UE 115, and the configuration may include UE-specific configurations of beam recovery resources based on the identified SNR. Payload manager 1160 can identify payloads associated with uplink transmissions from one or more UEs 115, wherein the configuration includes indications for additional beam recovery resources allocated for one or more beam recovery messages based on the identified payloads.

[0142] Figure 12According to various aspects of this disclosure, a diagram of a system 1200 including device 1205 is shown, which supports uplink resources for beam recovery. Device 1205 may be as described above (e.g., refer to...). Figure 1 Examples of components of base station 105, or components including base station 105. Device 1205 may include components for two-way voice and data communication, including components for transmitting communication and components for receiving communication, including base station beam recovery manager 1215, processor 1220, memory 1225, software 1230, transceiver 1235, antenna 1240, network communication manager 1245, and base station communication manager 1250. These components may communicate electronically via one or more buses (e.g., bus 1210). Device 1205 may communicate wirelessly with one or more UEs 115.

[0143] Processor 1220 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1220 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1220. Processor 1220 may be configured to execute computer-readable instructions stored in memory to perform various functions (e.g., functions or tasks supporting uplink resources for beam recovery).

[0144] Memory 1225 may include RAM and ROM. Memory 1225 may store computer-readable, computer-executable software 1230 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, among other things, memory 1225 may include a BIOS that controls basic hardware and / or software operations (e.g., interaction with peripheral components or devices).

[0145] Software 1230 may include code for implementing aspects of this disclosure, including code for supporting uplink resources for beam recovery. Software 1230 may be stored in a non-transitory computer-readable medium such as system memory or other memory. In some cases, software 1230 may not be executed directly by a processor, but may instead cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0146] Transceiver 1235 can communicate bidirectionally via one or more antennas, wired links, or wireless links, as described above. For example, transceiver 1235 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1235 may also include a modem for modulating packets, providing modulated packets to the antenna for transmission, and demodulating packets received from the antenna. In some cases, the wireless device may include a single antenna 1240. However, in some cases, the device may have more than one antenna 1240, which is capable of concurrently transmitting or receiving multiple wireless transmissions.

[0147] The network communication manager 1245 can manage communication with the core network (e.g., via one or more wired backhaul links). For example, the network communication manager 1245 can manage the transmission of data communication to client devices (e.g., one or more UEs 115).

[0148] The base station communication manager 1250 can manage communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with the UE 115. For example, the base station communication manager 1250 can coordinate scheduling for transmissions to the UE 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the base station communication manager 1250 may provide an X2 interface within Long Term Evolution (LTE) / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0149] Figure 13 According to various aspects of this disclosure, flowcharts illustrating method 1300 for uplink resources used for beam recovery are shown. Operation of method 1300 can be implemented by UE 115 or its components as described herein. For example, operation of method 1300 can be implemented by, as referenced... Figures 5 to 8 The described UE beam recovery manager is used to perform this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the functions described below. Alternatively or concurrently, the UE 115 can use special-purpose hardware to perform aspects of the functions described below.

[0150] At block 1305, UE 115 can receive configuration for beam recovery resources. This can be referenced... Figures 1 to 4 The described method is used to perform the operation of block 1305. In some examples, aspects of the operation of block 1305 can be derived from, as shown in the reference... Figures 5 to 8 The resource configuration components described are used to execute this.

[0151] At block 1310, UE 115 can identify beam failure of one or more active beams used for communication with base station 105. This can be done according to reference... Figures 1 to 4 The described method is used to perform the operations on block 1310. In some examples, aspects of the operations on block 1310 can be derived from, as shown in the reference... Figures 5 to 8 The described beam failure component is used to perform this.

[0152] At block 1315, UE 115 can, based on the identified beam failure, use beam recovery resources to send a beam recovery message to the base station according to the received configuration. This can be referenced... Figures 1 to 4 The described method is used to perform the operation on block 1315. In some examples, aspects of the operation on block 1315 can be derived from, as shown in the reference... Figures 5 to 8 The UE beam recovery message manager is described and executed accordingly.

[0153] Figure 14 According to various aspects of this disclosure, flowcharts illustrating a method 1400 for uplink resources used for beam recovery are shown. Operation of method 1400 can be implemented by a UE 115 or its components as described herein. For example, operation of method 1400 can be implemented by, as referenced... Figures 5 to 8 The described UE beam recovery manager is used to perform this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the functions described below. Alternatively or concurrently, the UE 115 can use special-purpose hardware to perform aspects of the functions described below.

[0154] At block 1405, UE 115 can receive configuration for beam recovery resources. This can be referenced... Figures 1 to 4 The described method is used to perform the operation on block 1405. In some examples, aspects of the operation on block 1405 can be derived from, as shown in the reference... Figures 5 to 8 The resource configuration components described are used to execute this.

[0155] At block 1410, UE 115 can identify beam failures in one or more active beams used for communication with base station 105. This can be done according to reference... Figures 1 to 4 The described method is used to perform the operations on block 1410. In some examples, aspects of the operations on block 1410 can be derived from, as shown in the reference... Figures 5 to 8 The described beam failure component is used to perform this.

[0156] At block 1415, UE 115 can, based on the identified beam failure, use beam recovery resources to send a beam recovery message to base station 105 according to the received configuration. This can be referenced... Figures 1 to 4The described method is used to perform the operation on block 1415. In some examples, aspects of the operation on block 1415 can be derived from, as shown in the reference... Figures 5 to 8 The UE beam recovery message manager is described and executed accordingly.

[0157] At block 1420, UE 115 can receive a message from base station 105 in response to a transmitted beam recovery message, the message including an indication of a set of reference signals for beam refinement. This can be based on the reference... Figures 1 to 4 The described method is used to perform the operations on block 1420. In some examples, aspects of the operations on block 1420 can be derived from, as shown in the reference... Figures 5 to 8 The described beam refinement component is used to perform this.

[0158] Figure 15 According to various aspects of this disclosure, flowcharts illustrating a method 1500 for uplink resources used for beam recovery are shown. Operation of method 1500 can be implemented by a UE 115 or its components as described herein. For example, operation of method 1500 can be performed by, as described in reference... Figures 5 to 8 The described UE beam recovery manager is used to perform this function. In some examples, the UE 115 can execute a set of code to control the functional elements of the device to perform the functions described below. Alternatively or concurrently, the UE 115 can use special-purpose hardware to perform aspects of the functions described below.

[0159] At block 1505, UE 115 can receive configuration for beam recovery resources. For example, the configuration can be received via RRC signaling or via system information broadcast. (Refer to...) Figures 1 to 4 The described method is used to perform the operation on block 1505. In some examples, aspects of the operation on block 1505 can be derived from, as shown in the reference... Figures 5 to 8 The resource configuration components described are used to execute this.

[0160] At block 1510, UE 115 may optionally receive an indication regarding enabling the use of beam recovery resources for transmitting beam recovery messages. For example, UE 115 may receive the indication for enabling the use of beam recovery resources via a lower layer (L1 / L2 signaling). In this case, UE 115 may have previously transmitted beam recovery messages using a different set of resources (e.g., resources allocated for RACH or SR messages), and upon receiving the indication to enable the use of dedicated resources for beam recovery, may subsequently transmit beam recovery messages on those resources. This can be done according to reference... Figures 1 to 4 The described method is used to perform the operations on block 1520. In some examples, aspects of the operations on block 1520 can be derived from, as shown in the reference... Figures 5 to 8The UE beam recovery message manager is described and executed accordingly.

[0161] Alternatively, at block 1515, UE 115 may receive an instruction to disable the use of beam recovery resources for transmitting beam recovery messages. In this case, UE 115 can transmit beam recovery messages according to, for example, the default scheme or the configuration used to transmit beam recovery messages on uplink resources. This can be done according to reference... Figures 1 to 4 The described method is used to perform the operation on block 1515. In some examples, aspects of the operation on block 1515 can be derived from, as shown in the reference... Figures 5 to 8 The UE beam recovery message manager is described and executed accordingly.

[0162] At block 1520, UE 115 can identify beam failure of one or more active beams used for communication with the base station. This can be referenced... Figures 1 to 4 The described method is used to perform the operations on block 1520. In some examples, aspects of the operations on block 1520 can be derived from, as shown in the reference... Figures 5 to 8 The described beam failure component is used to perform this.

[0163] At block 1525, UE 115 can, based on the identified beam failure and according to the received configuration, use beam recovery resources to send a beam recovery message to the base station, wherein sending the beam recovery message is based on an indication. This can be referenced... Figures 1 to 4 The described method is used to perform the operations on block 1525. In some examples, aspects of the operations on block 1525 can be derived from, as shown in the reference... Figures 5 to 8 The UE beam recovery message manager is described and executed accordingly.

[0164] Figure 16 According to various aspects of this disclosure, flowcharts illustrating a method 1600 for uplink resources used for beam recovery are shown. Operation of method 1600 can be implemented by a base station 105 or its components as described herein. For example, operation of method 1600 can be implemented by, as described in reference... Figures 9 to 12 The described base station beam recovery manager is used to perform this function. In some examples, base station 105 can execute a set of code to control the functional elements of the device to perform the functions described below. Alternatively or concurrently, base station 105 may use special-purpose hardware to perform aspects of the functions described below.

[0165] At block 1605, base station 105 can use one or more active beams to communicate with one or more UEs 115. This can be done according to reference... Figures 1 to 4 The described method is used to perform the operation on block 1605. In some examples, aspects of the operation on block 1605 can be derived from, as shown in the reference... Figures 9 to 12The described communication manager is used to execute this.

[0166] At block 1610, base station 105 can send configuration for beam recovery resources. This can be done according to the reference... Figures 1 to 4 The described method is used to perform the operations on block 1610. In some examples, aspects of the operations on block 1610 can be derived from, as shown in the reference... Figures 9 to 12 The described uplink resource manager is used to execute this.

[0167] At block 1615, base station 105 can receive one or more beam recovery messages on beam recovery resources, the one or more beam recovery messages indicating beam failure of at least one of one or more active beams. This can be referenced... Figures 1 to 4 The described method is used to perform the operations on block 1615. In some examples, aspects of the operations on block 1615 can be derived from, as shown in the reference... Figures 9 to 12 The described base station beam recovery message manager is used to perform this.

[0168] Figure 17 According to various aspects of this disclosure, flowcharts illustrating a method 1700 for uplink resources used for beam recovery are shown. Operation of method 1700 can be implemented by a base station 105 or its components as described herein. For example, operation of method 1700 can be implemented by, as described in reference... Figures 9 to 12 The described base station beam recovery manager is used to perform this function. In some examples, base station 105 can execute a set of code to control the functional elements of the device to perform the functions described below. Alternatively or concurrently, base station 105 may use special-purpose hardware to perform aspects of the functions described below.

[0169] At block 1705, base station 105 can use one or more active beams to communicate with one or more UEs 115. This can be done according to reference... Figures 1 to 4 The described method is used to perform the operation on block 1705. In some examples, aspects of the operation on block 1705 can be derived from, as shown in the reference... Figures 9 to 12 The described communication manager is used to execute this.

[0170] At block 1710, base station 105 can send the configuration for beam recovery resources as part of RRC signaling or system information broadcast. This can be done according to reference... Figures 1 to 4 The described method is used to perform the operations on block 1710. In some examples, aspects of the operations on block 1710 can be derived from, as shown in the reference... Figures 9 to 12 The described uplink resource manager is used to execute this.

[0171] At block 1715, base station 105 can receive one or more beam recovery messages on beam recovery resources, the one or more beam recovery messages indicating beam failure of at least one of one or more active beams. This can be referenced... Figures 1 to 4 The described method is used to perform the operations on block 1715. In some examples, aspects of the operations on block 1715 can be derived from, as shown in the reference... Figures 9 to 12 The described base station beam recovery message manager is used to perform this.

[0172] Figure 18 According to various aspects of this disclosure, flowcharts illustrating a method 1800 for uplink resources used for beam recovery are shown. Operation of method 1800 can be implemented by a base station 105 or its components as described herein. For example, operation of method 1800 can be implemented by, as described in reference... Figures 9 to 12 The described base station beam recovery manager is used to perform this function. In some examples, base station 105 can execute a set of code to control the functional elements of the device to perform the functions described below. Alternatively or concurrently, base station 105 may use special-purpose hardware to perform aspects of the functions described below.

[0173] At block 1805, base station 105 can use one or more active beams to communicate with one or more UEs 115. This can be done according to reference... Figures 1 to 4 The described method is used to perform the operation on block 1805. In some examples, aspects of the operation on block 1805 can be derived from, as shown in the reference... Figures 9 to 12 The described communication manager is used to execute this.

[0174] At block 1810, base station 105 can identify one or more reference signals associated with the set of downlink beams. This can be based on the reference... Figures 1 to 4 The described method is used to perform the operations on block 1810. In some examples, aspects of the operations on block 1810 can be derived from, as shown in the reference... Figures 9 to 12 The reference signal manager described is used for execution.

[0175] At block 1815, base station 105 can identify the mapping between beam recovery resources and downlink beam sets based on one or more reference signals. This can be done based on the reference... Figures 1 to 4 The described method is used to perform the operations on block 1815. In some examples, aspects of the operations on block 1815 can be derived from, as shown in the reference... Figures 9 to 12 The described uplink resource manager is used to execute this.

[0176] At block 1820, base station 105 can send configuration for beam recovery resources, including instructions on mapping. This can be referenced... Figures 1 to 4The described method is used to perform the operations on block 1820. In some examples, aspects of the operations on block 1820 can be derived from, as shown in the reference... Figures 9 to 12 The described uplink resource manager is used to execute this.

[0177] At block 1825, base station 105 can receive one or more beam recovery messages on beam recovery resources, the one or more beam recovery messages indicating beam failure of at least one of one or more active beams. This can be referenced... Figures 1 to 4 The described method is used to perform the operations on block 1825. In some examples, aspects of the operations on block 1825 can be derived from, as shown in the reference... Figures 9 to 12 The described base station beam recovery message manager is used to perform this.

[0178] It should be noted that the methods described above outline some possible implementations, and that the operations and steps can be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more methods can be combined.

[0179] The technologies described in this article can be used in various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, Single-Carrier Frequency Division Multiple Access (SC-FDMA), and others. The terms "system" and "network" are often used interchangeably. CDMA systems can implement wireless technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers the IS-2000, IS-95, and IS-856 standards. IS-2000 releases may commonly be referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is commonly referred to as CDMA 2000 1xEV-DO, High-Speed ​​Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other CDMA variants. TDMA systems can implement wireless technologies such as Global System for Mobile Communications (GSM).

[0180] OFDMA systems can implement wireless technologies such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and others. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and Improved LTE (LTE-A) are versions of UMTS that adopt E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, NR, and GSM are described in documents from an organization called the 3rd Generation Partnership Project (3GPP). CDMA2000 and UMB are described in documents from an organization called the 3rd Generation Partnership Project 2 (3GPP2). The technologies described herein can be used in the systems and wireless technologies mentioned above, as well as other systems and wireless technologies. While aspects of LTE or NR systems are described for illustrative purposes and the terms LTE or NR may be used in most of the description, the technologies described herein apply beyond LTE or NR applications.

[0181] In LTE / LTE-A networks, including those described herein, the term Evolved Node B (eNB) is commonly used to describe a base station. One or more wireless communication systems described herein may include heterogeneous LTE / LTE-A or NR networks in which different types of Evolved Node Bs (eNBs) provide coverage for various geographic areas. For example, each eNB, gNB, or base station may provide communication coverage for macro cells, small cells, or other types of cells. Depending on the context, the term "cell" may be used to describe a base station, a carrier or component carrier associated with a base station, or the coverage area of ​​a carrier or base station (e.g., a sector, etc.).

[0182] A base station may include, or be referred to by those skilled in the art as, a base station transceiver, a wireless base station, an access point, a wireless transceiver, a Node B, an evolved Node B (eNB), a next-generation Node B (gNB), a home Node B, a home evolved Node B, or some other suitable term. The geographical coverage area for a base station may be divided into sectors that constitute only a portion of the coverage area. One or more wireless communication systems described herein may include different types of base stations (e.g., macro base stations or small cell base stations). The UE described herein is capable of communicating with various types of base stations and network devices, including macro eNBs, small cell eNBs, gNBs, relay base stations, etc. Overlapping geographical coverage areas may exist for different technologies.

[0183] Macro cells typically cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UEs with service subscriptions with the network provider. In contrast, small cells are lower-power base stations that can operate in the same or different (e.g., licensed, unlicensed, etc.) frequency bands as macro cells. Depending on the example, small cells can include picocells, femtocells, and microcells. For example, a picocell can cover a small geographic area and allow unrestricted access by UEs with service subscriptions with the network provider. A femtocell can also cover a small geographic area (e.g., a home) and provide restricted access by UEs associated with the femtocell (e.g., UEs in a Closed Subscriber Group (CSG), UEs for users in a home, etc.). An eNB for a macro cell can be called a macro eNB. An eNB for a small cell can be called a small cell eNB, pico eNB, femtocell eNB, or home eNB. An eNB can support one or more (e.g., two, three, four, etc.) cells (e.g., component carriers).

[0184] The wireless communication system or several wireless communication systems described herein can support synchronous or asynchronous operation. For synchronous operation, base stations can have similar frame timing, and transmissions from different base stations can be approximately time-aligned. For asynchronous operation, base stations can have different frame timing, and transmissions from different base stations can be time-disaligned. The techniques described herein can be used for both synchronous and asynchronous operation.

[0185] The downlink transmission described in this article can also be referred to as forward link transmission, and the uplink transmission can also be referred to as reverse link transmission. Each communication link described in this article (e.g., it includes...) Figure 1 and Figure 2 The wireless communication systems 100 and 200 may include one or more carriers, wherein each carrier may be a signal composed of multiple subcarriers (e.g., waveform signals of different frequencies).

[0186] The specific embodiments described above, in conjunction with the accompanying drawings, are exemplary configurations and do not represent all possible examples or all examples falling within the scope of the claims. The term "exemplary" as used herein means "serving as an example, illustration, or description" and does not imply "more preferred" or "more advantageous than other examples." The specific embodiments include particular details to provide a thorough understanding of the described techniques. However, these techniques can be implemented without using these particular details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0187] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, components of the same type can be distinguished by adding a dashed line after the reference numeral and a second reference numeral to differentiate similar components. If only the first reference numeral is used in the specification, the description applies to any similar component having the same first reference numeral, regardless of the second reference numeral.

[0188] The information and signals described herein can be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0189] The various illustrative blocks and modules described herein can be implemented or executed using general-purpose processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but alternatively, it may also be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0190] The functions described herein can be implemented using hardware, processor-executed software, firmware, or any combination thereof. If implemented using processor-executed software, the functions can be stored as one or more instructions or code on a computer-readable medium, or transmitted on a computer-readable medium. Other examples and implementations are also within the scope of this disclosure and its appended claims. For example, due to the nature of software, the functions described above can be implemented using processor-executed software, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functions can also be physically located in various locations, including distributed portions that implement the functions in different physical locations. Furthermore, as used herein (including the claims), the word "or" as used in a list item (e.g., a list item ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such that, for example, at least one of the lists 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). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, without departing from the scope of this disclosure, an exemplary step described as "based on condition A" may be based on both condition A and condition B. In other words, as used herein, the phrase "based on" should be interpreted in the same way as the phrase "at least partially based on".

[0191] Computer-readable media include non-transitory computer storage media and communication media, wherein the communication media includes any medium that facilitates the transfer of a computer program from one place to another. Non-transitory storage media can be any available medium accessible by a general-purpose or special-purpose computer. For example, but not limitingly, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable read-only memory (EEPROM), compressed optical disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory medium capable of carrying or storing desired units of program code in the form of instructions or data structures and accessible by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Furthermore, any connection may be appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave are included in the definition of media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital versatile optical discs (DVDs), floppy disks, and Blu-ray discs, where disks typically copy data magnetically, while optical discs use lasers to copy data optically. Combinations of these should also be included within the scope of protection for computer-readable media.

[0192] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of protection of the present disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is consistent with the broadest scope of the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment (UE), comprising: Receive configuration from the base station for dedicated beam recovery resources used in the beam recovery process; The UE determines whether the use of the dedicated beam recovery resource for transmitting beam recovery messages is enabled; Identify beam failure conditions for one or more active beams used to communicate with the base station; Perform measurements on a set of reference signals associated with the one or more active beams; Identify the downlink beam from the base station; as well as In response to the identified beam failure condition, the beam recovery message is sent to the base station using the dedicated beam recovery resource or using a second set of beam recovery resources, at least in part based on the determined result of whether the dedicated beam recovery resource is used, wherein the beam recovery message using the dedicated beam recovery resource includes measurement information based on the performed measurement and the determined downlink beam identifier.

2. The method according to claim 1, further comprising: The second configuration of the second beam recovery resource set is received from the base station as part of a system information broadcast.

3. The method according to claim 1, wherein, The configuration of the dedicated beam recovery resource is received via Radio Resource Control (RRC) signaling.

4. The method according to claim 1, further comprising: The UE monitors the Physical Downlink Control Channel (PDCCH) in response to the beam recovery message. as well as The response to the beam recovery message is received from the base station on the PDCCH at least in part based on the monitoring.

5. The method according to claim 4, wherein, The response to the beam recovery message indicates the presence of one or more additional reference signals for beam refinement.

6. The method according to claim 1, further comprising: The mapping between the downlink beam from the base station and the dedicated beam recovery resource is received via the configuration of the dedicated beam recovery resource.

7. The method according to claim 1, further comprising: The indication of the period for sending the beam recovery message to the base station is received via the configuration of the dedicated beam recovery resources.

8. The method according to claim 1, further comprising: Send a temporary cell radio network identifier (CRNTI) indicating the identity of the UE to the base station.

9. The method according to claim 1, wherein, Each of the one or more active beams is associated with a corresponding configuration of the dedicated beam recovery resource.

10. The method according to claim 1, wherein, Determining whether the use of the dedicated beam recovery resource for transmitting beam recovery messages is enabled by the UE includes: Receive signaling from the base station indicating the use of the dedicated beam recovery resources.

11. The method according to claim 1, further comprising: The UE receives an indication from the base station of the number of beam recovery requests to be performed, wherein the beam recovery message is sent at least in part based on the number of beam recovery requests.

12. The method according to claim 1, further comprising: The beam recovery message is used to send an indication of candidate beams for beam recovery; as well as In response to the beam recovery message, an acknowledgment of the candidate beam is received from the base station.

13. The method according to claim 1, further comprising: Receive a second configuration of the reference signal set for beam failure detection from the base station; as well as The reference signal set is monitored at least in part based on the second configuration of the reference signal set, wherein the beam failure condition is identified at least in part based on the monitoring.

14. The method according to claim 13, wherein, The reference signal set includes one or more channel state information reference signals (CSI-RS).

15. The method of claim 13, further comprising: The relationship between the reference signal set and the active beam set is determined at least in part based on the second configuration of the reference signal set, wherein the reference signal set includes one or more channel state information reference signals (CSI-RS).

16. The method according to claim 1, wherein, The dedicated beam recovery resources include contention-free resources.

17. A method for wireless communication at a base station, comprising: Use one or more active beams to communicate with one or more user equipment (UEs); Send the configuration for the dedicated beam recovery resources used in the beam recovery process; as well as A beam recovery message is received from the one or more UEs on the dedicated beam recovery resource or on the second set of beam recovery resources. The beam recovery message indicates a beam failure condition for at least one of the one or more active beams. The beam recovery message is received on the dedicated beam recovery resource or on the second set of beam recovery resources based on a determination of whether the one or more UEs have enabled the use of the dedicated beam recovery resource. The beam recovery message on the dedicated beam recovery resource includes measurement information based on a set of reference signals associated with the one or more active beams and a downlink beam identifier from the downlink beam of the base station.

18. The method of claim 17, further comprising: The second configuration of the second beam recovery resource set will be sent to the one or more UEs as part of a system information broadcast.

19. The method of claim 17, wherein, The configuration of the dedicated beam recovery resource is transmitted via Radio Resource Control (RRC) signaling.

20. The method of claim 17, further comprising: The response to the beam recovery message is sent to one or more UEs on the physical downlink control channel (PDCCH), the response to the beam recovery message being at least in part based on the received beam recovery message.

21. The method according to claim 20, wherein, The response to the beam recovery message indicates the presence of one or more additional reference signals for beam refinement.

22. The method of claim 17, further comprising: Indications for mapping between the downlink beam of the base station and the dedicated beam recovery resource are transmitted via the configuration of the dedicated beam recovery resource.

23. The method of claim 17, further comprising: Indications for the period used to send the beam recovery message are sent via the configuration of the dedicated beam recovery resource.

24. The method of claim 17, further comprising: Receive a Cell Radio Network Temporary Identifier (C-RNTI) indicating the identifier of one or more UEs.

25. The method according to claim 17, wherein, Each of the one or more active beams is associated with a corresponding configuration of the dedicated beam recovery resource.

26. The method of claim 17, further comprising: Sending signaling to the one or more UEs indicating the use of the dedicated beam recovery resources, wherein the dedicated beam recovery resources include contention-free resources.

27. The method of claim 17, further comprising: Send an indication to the one or more UEs of the number of beam recovery requests to be performed by each of the one or more UEs.

28. The method of claim 17, further comprising: The beam recovery message is used to receive an indication of a candidate beam for beam recovery. as well as Send confirmation of the candidate beam.

29. The method of claim 17, further comprising: Determine a second configuration for the set of reference signals used for beam failure detection; as well as The second configuration of the reference signal set is sent to the one or more UEs, wherein the beam recovery message is received at least in part based on the second configuration of the reference signal set, wherein the reference signal set includes one or more channel state information reference signals (CSI-RS).

30. An apparatus for wireless communication at a user equipment (UE), comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, to cause the device to perform the method of any one of claims 1 to 16.

31. An apparatus for wireless communication at a base station, comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, to cause the device to perform the method of any one of claims 17 to 29.

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