Techniques for beam failure recovery and reselection in physical uplink control channels

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may select a first resource from a plurality of resources for transmission of a request to initiate a beam failure recovery procedure. The UE may determine that another transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure using the first resource and is to be transmitted using the first resource. The UE may select a second resource for transmission of the request to initiate a beam failure recovery procedure based at least in part on determining that the other transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure and is to be transmitted using the first resource. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 936,153, filed on November 15, 2019, entitled “TECHNIQUES FOR PHYSICAL UPLINK CONTROL CHANNEL BEAM FAILURE RECOVERY RESELECTION,” and U.S. Non-Provisional Patent Application No. 16 / 949,486, filed on October 30, 2020, entitled “TECHNIQUES FOR PHYSICAL UPLINK CONTROL CHANNEL BEAM FAILURE RECOVERY RESELECTION,” which are hereby expressly incorporated herein by reference.

[0003] public domain

[0004] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for physical uplink control channel beam failure recovery reselection.

[0005] Related technical description

[0006] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0007] A wireless communication network may include several base stations (BSs) capable of supporting communications for several user equipment (UEs). User equipment (UEs) may communicate with the base stations (BSs) via downlinks and uplinks. The downlink (or forward link) refers to the communication link from the BS to the UE, while the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit / receive point (TRP), new radio (NR) BS, 5G Node B, and so on.

[0008] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at the city, country, region, and even global levels. New Radio (NR) (which may also be referred to as 5G) is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation for better integration with other open standards. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements to LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that adopt these technologies.

[0009] Overview

[0010] In some aspects, a wireless communication method performed by a user equipment (UE) includes: selecting a first resource among a plurality of resources for transmission of a request to initiate a beam failure recovery procedure; determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure using the first resource and is to be transmitted using the first resource; and selecting a second resource for transmission of the request to initiate a beam failure recovery procedure based at least in part on determining that the other transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure and is to be transmitted using the first resource.

[0011] In a first aspect, the method includes transmitting, using a second resource, a request to initiate a beam failure recovery procedure.

[0012] In some aspects, the method includes: detecting a beam failure; and wherein selecting the first resource includes selecting the first resource based at least in part on the detection of the beam failure, selecting the first resource includes selecting the first resource based at least in part on the detection of the beam failure.

[0013] In some aspects, the first resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0014] In some aspects, the second resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0015] In some aspects, determining that another transmission is scheduled contemporaneously with the transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource includes: determining that a hybrid automatic repeat request acknowledgment message having a physical uplink control channel format 1 is to be prioritized for the first resource over the transmission of the request to initiate a beam failure recovery procedure on the first resource, wherein the first resource is a scheduling request having a physical uplink control channel format 0.

[0016] In some aspects, determining that another transmission is scheduled contemporaneously with the transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource includes: the first uplink transmission is prioritized for the first resource over the transmission of the request to initiate a beam failure recovery procedure, wherein the first resource is a second uplink transmission having a lower transmission priority than the first uplink transmission.

[0017] In some aspects, selecting the first resource includes: selecting a first physical uplink control channel beam failure recovery resource based at least in part on network characteristics, and wherein selecting the second resource includes: selecting a second physical uplink control channel beam failure recovery resource based at least in part on determining to discard the first physical uplink control channel beam failure recovery resource.

[0018] In some aspects, the method includes: determining to discard a second physical uplink control channel beam failure recovery resource; selecting a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource; and requesting an uplink grant using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

[0019] In some aspects, selecting the first resource includes: selecting a first physical uplink control channel beam failure recovery resource in the same physical uplink control channel group as the failed secondary cell associated with the beam failure recovery procedure; and wherein selecting the second resource includes: selecting a second physical uplink control channel beam failure recovery resource.

[0020] In some aspects, the second physical uplink control channel beam failure recovery resources are in the same physical uplink control channel group as the failed secondary cell.

[0021] In some aspects, the second physical uplink control channel beam failure recovery resources are in a different physical uplink control channel group than the physical uplink control channel group of the failed secondary cell.

[0022] In some aspects, the method includes: determining to discard a second physical uplink control channel beam failure recovery resource; selecting a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource; and requesting an uplink grant using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

[0023] In some aspects, the scheduling request resource is at least one of: a scheduling request resource available to the UE, a scheduling request resource available to the UE in the same physical uplink control channel group as the failed secondary cell, or a scheduling request resource that occurs first in time.

[0024] In some aspects, selecting the first resource comprises selecting a physical uplink control channel beam failure recovery resource; and wherein selecting the second resource comprises selecting a scheduling request resource to request an uplink grant.

[0025] In some aspects, a UE for wireless communication may include a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: select a first resource from a plurality of resources for transmission of a request to initiate a beam failure recovery procedure; determine that another transmission is scheduled concurrently with the transmission of the request to initiate a beam failure recovery procedure using the first resource and is to be transmitted using the first resource; and select a second resource for transmission of the request to initiate a beam failure recovery procedure based at least in part on determining that the other transmission is scheduled concurrently with the transmission of the request to initiate a beam failure recovery procedure and is to be transmitted using the first resource.

[0026] In some aspects, the one or more processors are further configured to transmit, using the second resource, a request to initiate a beam failure recovery procedure.

[0027] In some aspects, the one or more processors are further configured to: detect a beam failure; and wherein the one or more processors, when selecting the first resource, are configured to: select the first resource based at least in part on the detection of the beam failure.

[0028] In some aspects, the first resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0029] In some aspects, the second resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0030] In some aspects, the one or more processors, upon determining that another transmission is scheduled contemporaneously with the transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource, are configured to: determine that a hybrid automatic repeat request acknowledgment message having physical uplink control channel format 1 is to be prioritized for the first resource over the transmission of the request to initiate a beam failure recovery procedure on the first resource, wherein the first resource is a scheduling request having physical uplink control channel format 0.

[0031] In some aspects, the one or more processors, upon determining that another transmission is scheduled contemporaneously with the transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource, are configured to: determine that the first uplink transmission is to be prioritized for the first resource over the transmission of the request to initiate a beam failure recovery procedure, wherein the first resource is a second uplink transmission having a lower transmission priority than the first uplink transmission.

[0032] In some aspects, the one or more processors are configured, when selecting the first resource, to: select a first physical uplink control channel beam failure recovery resource based at least in part on network characteristics; and wherein the one or more processors, when selecting the second resource, are configured to: select a second physical uplink control channel beam failure recovery resource based at least in part on a determination to discard the first physical uplink control channel beam failure recovery resource.

[0033] In some aspects, the one or more processors are further configured to: determine to discard a second physical uplink control channel beam failure recovery resource; select a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource; and use the scheduling request resource to request an uplink grant based at least in part on reselecting to the scheduling request resource.

[0034] In some aspects, the one or more processors are configured, when selecting the first resource, to: select a first physical uplink control channel beam failure recovery resource in the same physical uplink control channel group as the failed secondary cell associated with the beam failure recovery procedure; and wherein the one or more processors are configured, when selecting the second resource, to: select a second physical uplink control channel beam failure recovery resource.

[0035] In some aspects, the second physical uplink control channel beam failure recovery resources are in the same physical uplink control channel group as the failed secondary cell.

[0036] In some aspects, the second physical uplink control channel beam failure recovery resources are in a different physical uplink control channel group than the physical uplink control channel group of the failed secondary cell.

[0037] In some aspects, the one or more processors are further configured to: determine to discard a second physical uplink control channel beam failure recovery resource; select a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource; and request an uplink grant using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

[0038] In some aspects, the scheduling request resource is at least one of: a scheduling request resource available to the UE, a scheduling request resource available to the UE in the same physical uplink control channel group as the failed secondary cell, or a scheduling request resource that occurs first in time.

[0039] In some aspects, the one or more processors, when selecting the first resource, are configured to: select a physical uplink control channel beam failure recovery resource; and wherein the one or more processors, when selecting the second resource, are configured to: select a scheduling request resource to request an uplink grant.

[0040] In some aspects, a non-transitory computer-readable medium stores an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a UE, causes the UE to: select a first resource from a plurality of resources for transmission of a request to initiate a beam failure recovery procedure; determine that another transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure using the first resource and is to be transmitted using the first resource; and select a second resource for transmission of the request to initiate a beam failure recovery procedure based at least in part on determining that the other transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure and is to be transmitted using the first resource.

[0041] In some aspects, the one or more instructions further cause the UE to: transmit a request to initiate a beam failure recovery procedure using the second resource.

[0042] In some aspects, the one or more instructions further cause the UE to: detect a beam failure; and wherein the one or more instructions that cause the UE to select the first resource cause the UE to: select the first resource based at least in part on the detection of the beam failure.

[0043] In some aspects, the first resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0044] In some aspects, the second resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0045] In some aspects, one or more instructions that cause the UE to determine that another transmission is scheduled contemporaneously with the transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource cause the UE to: determine that a hybrid automatic repeat request acknowledgment message having physical uplink control channel format 1 is to be prioritized for the first resource over the transmission of the request to initiate a beam failure recovery procedure on the first resource, where the first resource is a scheduling request having physical uplink control channel format 0.

[0046] In some aspects, one or more instructions that cause the UE to determine that another transmission is scheduled contemporaneously with the transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource cause the UE to: determine that the first uplink transmission is to be prioritized for the first resource over the transmission of the request to initiate a beam failure recovery procedure, wherein the first resource is a second uplink transmission having a lower transmission priority than the first uplink transmission.

[0047] In some aspects, one or more instructions causing the UE to select a first resource cause the UE to: select a first physical uplink control channel beam failure recovery resource based at least in part on network characteristics; and one or more instructions causing the UE to select a second resource cause the UE to: select a second physical uplink control channel beam failure recovery resource based at least in part on a determination to discard the first physical uplink control channel beam failure recovery resource.

[0048] In some aspects, the one or more instructions further cause the UE to: determine to discard a second physical uplink control channel beam failure recovery resource; select a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource; and use the scheduling request resource to request an uplink grant based at least in part on reselecting the scheduling request resource.

[0049] In some aspects, the one or more instructions causing the UE to select the first resource cause the UE to: select a first physical uplink control channel beam failure recovery resource in the same physical uplink control channel group as the failed secondary cell associated with the beam failure recovery procedure; and wherein the one or more instructions causing the UE to select the second resource cause the UE to: select a second physical uplink control channel beam failure recovery resource.

[0050] In some aspects, the second physical uplink control channel beam failure recovery resources are in the same physical uplink control channel group as the failed secondary cell.

[0051] In some aspects, the second physical uplink control channel beam failure recovery resources are in a different physical uplink control channel group than the physical uplink control channel group of the failed secondary cell.

[0052] In some aspects, the one or more instructions further cause the UE to: determine to discard a second physical uplink control channel beam failure recovery resource; select a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource; and request an uplink grant using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

[0053] In some aspects, the scheduling request resource is at least one of: a scheduling request resource available to the UE, a scheduling request resource available to the UE in the same physical uplink control channel group as the failed secondary cell, or a scheduling request resource that occurs first in time.

[0054] In some aspects, the one or more instructions causing the UE to select a first resource cause the UE to: select a physical uplink control channel beam failure recovery resource; and wherein the one or more instructions causing the UE to select a second resource cause the UE to: select a scheduling request resource to request an uplink grant.

[0055] In some aspects, an apparatus for wireless communication includes: a device for selecting a first resource from a plurality of resources for transmission of a request to initiate a beam failure recovery procedure; a device for determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure using the first resource and is to be transmitted using the first resource; and a device for selecting a second resource for transmission of the request to initiate a beam failure recovery procedure based at least in part on determining that the other transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure and is to be transmitted using the first resource.

[0056] In some aspects, the apparatus includes means for transmitting, using the second resource, a request to initiate a beam failure recovery procedure.

[0057] In some aspects, the apparatus includes means for detecting a beam failure; and wherein the means for selecting a first resource includes means for selecting the first resource based at least in part on the detection of the beam failure. The means for selecting the first resource includes means for selecting the first resource based at least in part on the detection of the beam failure.

[0058] In some aspects, the first resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0059] In some aspects, the second resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0060] In some aspects, an apparatus for determining that another transmission is scheduled contemporaneously with the transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource includes: an apparatus for determining that a hybrid automatic repeat request acknowledgment message having physical uplink control channel format 1 is to be prioritized for the first resource over the transmission of the request to initiate a beam failure recovery procedure on the first resource, wherein the first resource is a scheduling request having physical uplink control channel format 0.

[0061] In some aspects, an apparatus for determining that another transmission is scheduled contemporaneously with a transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource includes: an apparatus for prioritizing the first uplink transmission for the first resource over the transmission of the request to initiate a beam failure recovery procedure, wherein the first resource is a second uplink transmission having a lower transmission priority than the first uplink transmission.

[0062] In some aspects, the means for selecting the first resource comprises means for selecting a first physical uplink control channel beam failure recovery resource based at least in part on network characteristics, and wherein the means for selecting the second resource comprises means for selecting to a second physical uplink control channel beam failure recovery resource based at least in part on a determination to discard the first physical uplink control channel beam failure recovery resource.

[0063] In some aspects, the apparatus includes: means for determining to discard a second physical uplink control channel beam failure recovery resource; means for selecting a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource; and means for using the scheduling request resource to request an uplink grant based at least in part on reselecting to the scheduling request resource.

[0064] In some aspects, the means for selecting the first resource includes: a means for selecting a first physical uplink control channel beam failure recovery resource in the same physical uplink control channel group as the failed secondary cell associated with the beam failure recovery procedure; and wherein the means for selecting the second resource includes: a means for selecting a second physical uplink control channel beam failure recovery resource.

[0065] In some aspects, the second physical uplink control channel beam failure recovery resources are in the same physical uplink control channel group as the failed secondary cell.

[0066] In some aspects, the second physical uplink control channel beam failure recovery resources are in a different physical uplink control channel group than the physical uplink control channel group of the failed secondary cell.

[0067] In some aspects, the apparatus includes: means for determining to discard a second physical uplink control channel beam failure recovery resource; means for selecting a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource; and means for using the scheduling request resource to request an uplink grant based at least in part on reselecting to the scheduling request resource.

[0068] In some aspects, the scheduling request resource is at least one of: a scheduling request resource available to the device, a scheduling request resource available to the device in the same physical uplink control channel group as the failed secondary cell, or a scheduling request resource that occurs first in time.

[0069] In some aspects, the means for selecting the first resource comprises means for selecting a physical uplink control channel beam failure recovery resource; and wherein the means for selecting the second resource comprises means for selecting a scheduling request resource to request an uplink grant.

[0070] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems substantially as described herein with reference to and as illustrated in the accompanying figures and description.

[0071] The foregoing has broadly outlined the features and technical advantages of examples according to the present disclosure in an effort to make the following detailed description better understood. Additional features and advantages will be described hereinafter. The concepts and specific examples disclosed can be readily used as a basis for modifying or designing other structures for implementing the same purposes as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, as well as the associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures is provided for illustration and description purposes and is not intended to define limitations on the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] In order to understand in detail the features of the present disclosure set forth above, a more particular description of the content briefly summarized above may be obtained with reference to various aspects, some of which are illustrated in the accompanying drawings. It should be noted, however, that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are not to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0074] Figure 1 is a diagram illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0075] Figure 2 is a diagram illustrating an example of a base station and a UE in communication in a wireless communication network according to various aspects of the present disclosure.

[0076] Figure 3 is a diagram illustrating an example of physical uplink control channel beam failure recovery resource reselection according to various aspects of the present disclosure.

[0077] Figure 4 is a diagram illustrating an example process, eg, performed by user equipment, in accordance with various aspects of the present disclosure.

[0078] Figure 5 is a conceptual data flow diagram illustrating the flow of data between different modules / means / components in an example apparatus according to aspects of the present disclosure.

[0079] Detailed description

[0080] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and they will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently of any other aspect of the present disclosure or implemented in combination. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods that are practiced using a supplement to the various aspects of the present disclosure set forth herein or other other structures, functionality, or structure and functionality. It should be understood that any aspect of the present disclosure disclosed herein can be implemented by one or more elements of the claims.

[0081] Several aspects of telecommunications systems will now be presented with reference to various devices and techniques. These devices and techniques are described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0082] It should be noted that while various aspects may be described herein using terminology typically associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applicable in communication systems based on other generations, such as 5G and later generations, including NR technology.

[0083] Figure 1 1 is a diagram illustrating a wireless network 100 in which various aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include several BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmit reception point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0084] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1In the example shown in FIG, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0085] In some aspects, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces, such as direct physical connections, virtual networks, and / or the like using any suitable transport network.

[0086] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or a UE) and send transmissions of the data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in , relay station 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay station may also be referred to as a relay BS, relay base station, relay, or the like.

[0087] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0088] The network controller 130 may be coupled to a set of BSs and may provide coordination and control of these BSs. The network controller 130 may communicate with each BS via a backhaul. These BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0089] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0090] Some UEs may be considered machine type communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to or to a network (e.g., a wide area network (such as the Internet) or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, etc.

[0091] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific RAT and may operate on one or more frequencies. A RAT may also be referred to as a radio technology, air interface, etc. A frequency may also be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0092] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary) using one or more sidelink channels. For example, the UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this scenario, the UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0093] As indicated above, Figure 1 are provided as examples. Other examples may differ from those described in Figure 1 Examples described.

[0094] Figure 2 A block diagram shows a design 200 of a base station 110 and a UE 120, which may be Figure 1 One for each base station and one for each UE in . Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1.

[0095] At base station 110, transmit processor 220 may receive data for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS)) and synchronization signals (e.g., a primary synchronization signal (PSS) and a secondary synchronization signal (SSS)). A transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, as applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and frequency upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in greater detail below, position coding may be utilized to generate synchronization signals to convey additional information.

[0096] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols where applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0097] On the uplink, at UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.) from a controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by MIMO detector 236, if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120. Receive processor 238 may provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Network controller 130 may include communication unit 294, controller / processor 290, and memory 292.

[0098] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other components of the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or the like may perform one or more techniques associated with physical uplink control channel beam failure recovery resource reselection, as described in more detail elsewhere herein. Figure 2 Any other component of the may perform or direct e.g. Figure 4 The operations of process 400 and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include: a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of base station 110 and / or UE 120, may perform or direct, for example, Figure 4 The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0099] In some aspects, UE 120 may include: means for selecting a first resource from a plurality of resources for transmission of a request to initiate a beam failure recovery procedure; means for determining, based on a defined rule, to discard the transmission of the request to initiate the beam failure recovery procedure using the first resource; means for reselecting a second resource from the plurality of resources for transmission of the request to initiate the beam failure recovery procedure based at least in part on determining to discard the transmission of the request to initiate the beam failure recovery procedure using the first resource; and the like. In some aspects, such means may include, in conjunction with Figure 2 One or more components of the UE 120 are depicted, such as the controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and so forth.

[0100] As indicated above, Figure 2 are provided as examples. Other examples may differ from those described in Figure 2 Examples described.

[0101] In some communication systems, a UE may detect a beam failure event and initiate a beam failure recovery procedure. For example, the UE may determine that a network characteristic satisfies a threshold (e.g., a beam having less than a threshold signal strength, reference signal received power (RSRP), reference signal received quality (RSRQ), etc.), and may transmit a request to initiate a beam failure recovery procedure. The UE may select a resource from a Physical Uplink Control Channel (PUCCH) Beam Failure Recovery (BFR) resource group on which to transmit the request to initiate the beam failure recovery procedure. However, in some cases, the transmission of the request to initiate the beam failure recovery procedure on the selected resource may conflict with another transmission on the selected resource.

[0102] Some aspects described herein enable reselection to another resource to enable initiation of a beam failure recovery procedure. For example, based at least in part on a determination to discard a transmission requesting initiation of the beam failure recovery procedure on the selected resource, the UE can reselect to another PUCCH BFR resource or a scheduling request (SR) resource. In this manner, the UE can successfully initiate a beam failure recovery procedure even when the initially selected resource collides with another transmission.

[0103] Figure 3 is a diagram illustrating an example 300 of physical uplink control channel beam failure recovery resource reselection according to various aspects of the present disclosure. Figure 3 As shown in , example 300 includes UE 120 and BS 110.

[0104] like Figure 3 3 and further indicated by reference numeral 310, UE 120 may detect an event associated with triggering a beam failure recovery procedure. For example, UE 120 may detect a beam failure on a beam (e.g., of a secondary cell) used for communicating with BS 110. In some aspects, UE 120 may detect the beam failure based at least in part on determining that a measurement of the beam is less than a threshold.

[0105] like Figure 3, and further indicated by reference numeral 320, the UE 120 may select a first resource for transmission of a request to initiate a beam failure recovery procedure. For example, the UE 120 may select a first PUCCH BFR resource. Additionally or alternatively, the UE 120 may select a first SR resource for PUCCH BFR transmission. In some aspects, the UE 120 may select the first resource based at least in part on network characteristics. For example, the UE 120 may select the first resource based at least in part on a PUCCH link quality metric. In some aspects, the UE 120 may select the first resource from the same PUCCH group that includes the secondary cell on which the beam failure was detected. Additionally or alternatively, the UE 120 may select the first resource from a different PUCCH group than the PUCCH group that includes the secondary cell on which the beam failure was detected.

[0106] like Figure 3 , and further indicated by reference numeral 330, the UE 120 may determine to discard transmission of a request to initiate a beam failure recovery procedure from the first resource. For example, the UE 120 may determine not to transmit the request to initiate the beam failure recovery procedure on the first PUCCH BFR resource. In some aspects, the UE 120 may determine to discard transmission of the request based at least in part on a rule. For example, when the first resource is an SR resource associated with PUCCH format 0 and collides with a HARQ-ACK associated with PUCCH format 1, the UE 120 may determine to prioritize transmission of the HARQ-ACK on the first resource. Similarly, when the first resource is an SR having a lower transmission priority than another SR (having a higher transmission priority), the UE 120 may prioritize the other SR having the higher transmission priority.

[0107] like Figure 3 , and further shown by reference numeral 340, the UE 120 may select a second resource for the transmission of the request to initiate the beam failure recovery procedure. For example, the UE 120 may reselect to a second PUCCH BFR resource. In some aspects, the UE 120 may further reselect to another resource. For example, the UE 120 may determine (e.g., based at least in part on a rule, as described above) to discard the transmission of the request to initiate the beam failure recovery procedure on the second PUCCH BFR resource, and may select an SR resource on which to request an uplink transmission grant for transmitting a media access control (MAC) control element (CE) (MAC CE). In some aspects, the UE 120 may select any SR resource, including an SR resource of the same PUCCH group of the secondary cell on which the beam failure was detected, any regular SR, etc. Additionally or alternatively, the UE 120 may select a resource that is sequential in time to be reselected first.

[0108] As in Figure 3 As further shown in FIG. 1 and by reference numeral 350, UE 120 may transmit the request using a second resource. For example, UE 120 may transmit the request to initiate the beam failure recovery procedure on a second PUCCH BFR resource. Additionally or alternatively, as described above, UE 120 may further reselect to another resource and may transmit a request for an uplink grant on the other resource to enable UE 120 to initiate the beam failure recovery procedure.

[0109] As indicated above, Figure 3 are provided as examples. Other examples may differ from those described in Figure 3 Examples described.

[0110] Figure 4 4 is a diagram illustrating an example process 400 performed, for example, by a user equipment (UE) in accordance with various aspects of the present disclosure. Example process 400 is an example of a UE (e.g., UE 120) performing operations associated with physical uplink control channel beam failure recovery reselection.

[0111] like Figure 4 As shown in , in some aspects, process 400 may include selecting a first resource of a plurality of resources for transmission of a request to initiate a beam failure recovery procedure (block 410). For example, a UE (e.g., using Figure 5 The selecting component 506 depicted in can select a first resource of a plurality of resources for transmission of a request to initiate a beam failure recovery procedure, as described above.

[0112] like Figure 4 As further shown in FIG. 4 , in some aspects, process 400 may include determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure using the first resource and is to be transmitted using the first resource (block 420). For example, a UE (e.g., using Figure 5 The determining component 508 depicted in can determine that another transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure using the first resources and is to be transmitted using the first resources, as described above.

[0113] like Figure 4 As further shown in FIG. 4 , in some aspects, process 400 may include selecting a second resource for transmission of the request to initiate a beam failure recovery procedure based at least in part on determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate a beam failure recovery procedure and is to be transmitted using the first resource (block 430). For example, a UE (e.g., using Figure 5The selection component 506 depicted in can select the second resource for the transmission of the request to initiate a beam failure recovery procedure based at least in part on determining that another transmission is scheduled concurrently with the transmission of the request to initiate a beam failure recovery procedure and is to be transmitted using the first resource, as described above.

[0114] Process 400 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0115] In a first aspect, process 400 includes transmitting a request to initiate a beam failure recovery procedure using a second resource.

[0116] In a second aspect, alone or in combination with the first aspect, process 400 includes detecting a beam failure, and wherein selecting the first resource includes selecting the first resource based at least in part on detecting the beam failure.

[0117] In a third aspect, alone or in combination with one or more of the first and second aspects, the first resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0118] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the second resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

[0119] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, determining that another transmission is scheduled concurrently with the transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource includes: determining that a hybrid automatic repeat request acknowledgment message with physical uplink control channel format 1 is to be prioritized for the first resource over the transmission of the request to initiate a beam failure recovery procedure on the first resource, wherein the first resource is a scheduling request with physical uplink control channel format 0.

[0120] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, determining that another transmission is scheduled contemporaneously with the transmission of a request to initiate a beam failure recovery procedure using a first resource and is to be transmitted using the first resource includes: determining that the first uplink transmission is prioritized for the first resource over the transmission of the request to initiate a beam failure recovery procedure, wherein the first resource is a second uplink transmission having a lower transmission priority than the first uplink transmission.

[0121] In a seventh aspect, either alone or in combination with one or more of aspects one to six, the selection of the first resource comprises selecting a first physical uplink control channel beam failure recovery resource based at least in part on network characteristics, and wherein the selection of the second resource comprises selecting a second physical uplink control channel beam failure recovery resource based at least in part on a determination to discard the first physical uplink control channel beam failure recovery resource.

[0122] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 400 includes determining to discard a second physical uplink control channel beam failure recovery resource, selecting a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource, and requesting an uplink grant using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

[0123] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the selection of the first resource comprises selecting a first physical uplink control channel beam failure recovery resource in the same physical uplink control channel group as the failed secondary cell associated with the beam failure recovery procedure, and wherein the selection of the second resource comprises selecting a second physical uplink control channel beam failure recovery resource.

[0124] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the second physical uplink control channel beam failure recovery resources are in the same physical uplink control channel group as the failed secondary cell.

[0125] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the second physical uplink control channel beam failure recovery resources are in a physical uplink control channel group different from the physical uplink control channel group of the failed secondary cell.

[0126] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, process 400 includes: determining to discard a second physical uplink control channel beam failure recovery resource, selecting a scheduling request resource based at least in part on determining to discard the second physical uplink control channel beam failure recovery resource, and requesting an uplink grant using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

[0127] In the thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the scheduling request resource is a scheduling request resource available to the UE, a scheduling request resource available to the UE in the same physical uplink control channel group as the failed secondary cell, or one of the scheduling request resources that appear first in sequence in time.

[0128] In a fourteenth aspect, either alone or in combination with one or more of aspects one to thirteen, the selection of the first resource comprises selecting a physical uplink control channel beam failure recovery resource, and wherein the selection of the second resource comprises selecting a scheduling request resource to request an uplink grant.

[0129] although Figure 4 Example blocks of process 400 are shown, but in some aspects, process 400 may include Figure 4 4. In some embodiments, the process 400 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. Additionally or alternatively, two or more blocks of process 400 may be executed in parallel.

[0130] Figure 5 5 is a conceptual data flow diagram 500 illustrating the flow of data between different modules / means / components in an example device 502. The device 502 can be a UE (e.g., UE 120). In some aspects, the device 502 includes a receiving component 504, a selecting component 506, a determining component 508, and / or a transmitting component 510.

[0131] Receiving component 504 can receive information associated with detecting a beam failure event from BS 550 as data 520. For example, receiving component 504 can determine that a beam failure has occurred on a beam used for communicating with BS 550 based at least in part on performing measurements of the beam.

[0132] The selecting component 506 can receive, from the receiving component 504, information associated with selecting a first resource on which to transmit the request to initiate a beam failure recovery procedure as data 522. For example, the selecting component 506 can receive an indication of a beam failure, an indication of a network characteristic associated with one or more beams (e.g., to enable selection of a resource on a beam to be used to transmit the request to initiate a beam failure recovery procedure), etc. In this case, the selecting component 506 can select a first resource on which to transmit the request to initiate a beam failure recovery procedure, as described above.

[0133] Determining component 508 can receive information associated with determining whether to use the selected resource to transmit a request to initiate a beam failure recovery procedure from selecting component 506 as data 524. As described above, determining component 508 can determine to discard transmission of the request on the first resource and can provide data 526 to selecting component 506 to cause selecting component 506 to reselect to a second resource. In this case, selecting component 506 can reselect to the second resource and cause transmitting component 510 to use the second resource or another resource (e.g., a third resource after further reselection).

[0134] Transmitting component 510 can receive information identifying resources on which to transmit a request to initiate a beam failure recovery procedure, a request for an uplink grant, etc., from selecting component 506 as data 528. In this case, transmitting component 510 can transmit data 530 to BS 550 to cause BS 550 to initiate the beam failure recovery procedure or provide the uplink grant.

[0135] Device 502 may include executing Figure 4 The aforementioned process 400 and other additional components of each block of the algorithm. Figure 4 Each block in the aforementioned process 400, etc., may be performed by a component, and the device may include one or more of those components. These components may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0136] Figure 5 The number and arrangement of components shown in the FIG are provided as examples. In practice, there may be Figure 5 Components may include additional components, fewer components, different components, or differently arranged components than those shown in FIG. Figure 5 Two or more components shown in may be implemented in a single component, or Figure 5 The single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Figure 5 A set of components (e.g., one or more components) shown in FIG may perform the operations described as being performed by Figure 5 One or more functions performed by another group of components shown in FIG.

[0137] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the aspects.

[0138] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented using hardware, firmware, and / or a combination of hardware and software.

[0139] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0140] It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware, firmware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit the aspects. Thus, the operation and behavior of these systems and / or methods are described herein without reference to specific software code—it is understood that software and hardware can be designed to implement these systems and / or methods based, at least in part, on the description herein.

[0141] Although specific feature combinations are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. Although each dependent claim listed below can be directly subordinate to only one claim, the disclosure of various aspects includes that each dependent claim is combined with each other claim in this group of claims. The phrase "at least one" quoting a column of items refers to any combination of these items, including single members. As an example, "at least one of a, b or c" is intended to encompass: a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other arrangement of a, b and c).

[0142] The elements, actions or instructions used herein should not be interpreted as critical or necessary unless explicitly described as such. Moreover, as used herein, the articles "one" and "a" are intended to include one or more items and can be used interchangeably with "one or more". Furthermore, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, non-related items, a combination of related and non-related items, etc.) and can be used interchangeably with "one or more". Where intended to have only one item, the phrase "only one" or similar language is used. Furthermore, as used herein, the terms "having", "containing", "comprising" etc. are intended to be open terms. Furthermore, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated.

Claims

1. A method for performing wireless communication by a user equipment (UE), comprising: selecting a first resource of a plurality of resources for transmission of a request to initiate a beam failure recovery procedure, wherein the first resource is selected from a physical uplink control channel (PUCCH) group different from a PUCCH group including a secondary cell (SCell) on which the beam failure is detected; determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure using the first resources and is to be transmitted using the first resources; as well as Based at least in part on determining that the other transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure and is to be transmitted using the first resource, second resources are selected for transmission of the request to initiate the beam failure recovery procedure.

2. The method of claim 1, further comprising: The request to initiate the beam failure recovery procedure is transmitted using the second resource.

3. The method of claim 1 , wherein selecting the first resource comprises: The first resource is selected based at least in part on detecting the beam failure.

4. The method of claim 1, wherein the first resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

5. The method of claim 1, wherein the second resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

6. The method of claim 1 , wherein determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure using the first resources and is to be transmitted using the first resources comprises: Determine that a hybrid automatic repeat request acknowledgment message having physical uplink control channel format 1 is to be prioritized for use on the first resource over transmission of the request to initiate the beam failure recovery procedure on the first resource, wherein the first resource is a scheduling request having physical uplink control channel format 0.

7. The method of claim 1 , wherein determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure using the first resources and is to be transmitted using the first resources comprises: The first uplink transmission is determined to be prioritized for the first resource over the transmission of the request to initiate the beam failure recovery procedure based on a lower transmission priority than the first uplink transmission.

8. The method of claim 1 , wherein selecting the first resource comprises: selecting a first physical uplink control channel beam failure recovery resource based at least in part on a network characteristic; and The selection of the second resource includes: A second physical uplink control channel beam failure recovery resource is selected for transmission based at least in part on a determination to discard the first physical uplink control channel beam failure recovery resource.

9. The method of claim 8, further comprising: determining to discard the second physical uplink control channel beam failure recovery resource used for transmission; selecting a scheduling request resource based at least in part on a determination to discard the second physical uplink control channel beam failure recovery resource for transmission; as well as An uplink grant is requested using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

10. The method of claim 1, wherein selecting the first resource comprises: selecting a first physical uplink control channel beam failure recovery resource in the same physical uplink control channel group including a secondary cell (SCell) on which the beam failure was detected; and The selecting of the second resource includes: A second physical uplink control channel beam failure recovery resource is selected.

11. The method of claim 10, further comprising: Determining to discard the second physical uplink control channel beam failure recovery resource; selecting a scheduling request resource based at least in part on a determination to discard the second physical uplink control channel beam failure recovery resource for transmission; as well as An uplink grant is requested using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

12. The method of claim 11, wherein the scheduling request resource is at least one of: Scheduling request resources available to the UE, Scheduling request resources available to the UE in the same physical uplink control channel group as the failed secondary cell, or The scheduling that occurs first in time requests resources.

13. The method of claim 1 , wherein selecting the first resource comprises: selecting a physical uplink control channel beam failure recovery resource; and The selecting of the second resource includes: A scheduling request resource is selected to request an uplink grant.

14. A user equipment (UE) for wireless communication, comprising: Memory; as well as one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: selecting a first resource of a plurality of resources for transmission of a request to initiate a beam failure recovery procedure, wherein the first resource is selected from a physical uplink control channel (PUCCH) group different from a PUCCH group including a secondary cell (SCell) on which the beam failure is detected; determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure using the first resources and is to be transmitted using the first resources; as well as Based at least in part on determining that the other transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure and is to be transmitted using the first resource, second resources are selected for transmission of the request to initiate the beam failure recovery procedure.

15. The UE of claim 14, wherein the one or more processors are further configured to: The request to initiate the beam failure recovery procedure is transmitted using the second resource.

16. The UE of claim 14, wherein the one or more processors, when selecting the first resource, are configured to: The first resource is selected based at least in part on detecting the beam failure.

17. The UE of claim 14, wherein the first resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

18. The UE of claim 14, wherein the second resource is at least one of a physical uplink control channel beam failure recovery request resource or a scheduling request resource.

19. The UE of claim 14 , wherein the one or more processors, upon determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure using the first resource and is to be transmitted using the first resource, will: Determine that a hybrid automatic repeat request acknowledgment message having physical uplink control channel format 1 is to be prioritized for use on the first resource over transmission of the request to initiate the beam failure recovery procedure on the first resource, wherein the first resource is a scheduling request having physical uplink control channel format 0.

20. The UE of claim 14, wherein the one or more processors, upon determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure using the first resource and is to be transmitted using the first resource, will: The first uplink transmission is determined to be prioritized for the first resource over the transmission of the request to initiate the beam failure recovery procedure based on a lower transmission priority than the first uplink transmission.

21. The UE of claim 14, wherein the one or more processors, when selecting the first resource, are to: selecting a first physical uplink control channel beam failure recovery resource based at least in part on a network characteristic; and wherein the one or more processors, when selecting the second resource, will: A second physical uplink control channel beam failure recovery resource is selected for transmission based at least in part on a determination to discard the first physical uplink control channel beam failure recovery resource.

22. The UE of claim 21 , wherein the one or more processors are further configured to: determining to discard the second physical uplink control channel beam failure recovery resource used for transmission; selecting a scheduling request resource based at least in part on a determination to discard the second physical uplink control channel beam failure recovery resource for transmission; and An uplink grant is requested using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

23. The UE of claim 14, wherein the one or more processors, when selecting the first resource, are to: selecting a first physical uplink control channel beam failure recovery resource in the same physical uplink control channel group including a secondary cell (SCell) on which the beam failure was detected; and wherein the one or more processors, when selecting the second resource, will: A second physical uplink control channel beam failure recovery resource is selected.

24. The UE of claim 23, wherein the one or more processors are further configured to: Determining to discard the second physical uplink control channel beam failure recovery resource; selecting a scheduling request resource based at least in part on a determination to discard the second physical uplink control channel beam failure recovery resource for transmission; and An uplink grant is requested using the scheduling request resource based at least in part on reselecting to the scheduling request resource.

25. The UE of claim 24, wherein the scheduling request resource is at least one of: Scheduling request resources available to the UE, Scheduling request resources available to the UE in the same physical uplink control channel group as the failed secondary cell, or The scheduling that occurs first in time requests resources.

26. The UE of claim 14, wherein selecting the first resource comprises: selecting a physical uplink control channel beam failure recovery resource; and The selecting of the second resource includes: A scheduling request resource is selected to request an uplink grant.

27. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: selecting a first resource of a plurality of resources for transmission of a request to initiate a beam failure recovery procedure, wherein the first resource is selected from a physical uplink control channel (PUCCH) group different from a PUCCH group including a secondary cell (SCell) on which the beam failure is detected; determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure using the first resources and is to be transmitted using the first resources; as well as Based at least in part on determining that the other transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure and is to be transmitted using the first resource, second resources are selected for transmission of the request to initiate the beam failure recovery procedure.

28. A device for wireless communication, comprising: means for selecting a first resource of a plurality of resources for transmission of a request to initiate a beam failure recovery procedure, wherein the first resource is selected from a physical uplink control channel (PUCCH) group different from a PUCCH group including a secondary cell (SCell) on which the beam failure was detected; means for determining that another transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure using the first resources and is to be transmitted using the first resources; as well as Means for selecting second resources for transmission of the request to initiate the beam failure recovery procedure based at least in part on determining that the other transmission is scheduled contemporaneously with the transmission of the request to initiate the beam failure recovery procedure and is to be transmitted using the first resources.

Images