Techniques for mitigating redundant beam failure recovery medium access signaling

Abstract

In summary, various aspects of this disclosure relate to wireless communications. In some aspects, a user equipment can determine that a first beam fault recovery (BFR) has been triggered; determine BFR information associated with the BFR; determine whether at least a portion of the BFR information has not been transmitted since the triggering of a second BFR; and transmit a BFR message including the BFR information, at least in part based on the determination that the BFR has been triggered and the determination that at least a portion of the BFR information has not been transmitted since the triggering of the second BFR. Numerous other aspects are provided.

Description

Technical Field

[0001] In summary, various aspects of this disclosure relate to wireless communication and to techniques and apparatus for mitigating redundant beam fault recovery (BFR) media access signaling. Background Technology

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable 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 / Improved LTE is an enhanced set of the Universal Mobile Telecommunications System (UMTS) mobile standard released by the 3rd Generation Partnership Project (3GPP).

[0003] A wireless network may include multiple base stations (BSs) capable of supporting communication for multiple user equipments (UEs). UEs can communicate with base stations (BSs) via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, while an 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 Headend, Transmit / Receive Point (TRP), New Radio (NR) BS, 5G Node B, etc.

[0004] The above multiple access technologies have been adopted in various telecommunications 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) (also known as 5G) is an enhancement set of the LTE mobile standard released by the 3rd Generation Partnership Project (3GPP). NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving service, utilizing new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) (CP-OFDM) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Spread Spectrum OFDM (DFT-s-OFDM)) on the uplink (UL), thereby better supporting mobile broadband internet access, as well as beamforming, multiple-input multiple-output (MIMO) antenna technologies, and carrier aggregation. As the demand for mobile broadband access continues to grow, further improvements to LTE, NR, and other radio access technologies remain useful. Summary of the Invention

[0005] In some aspects, a method of wireless communication performed by a user equipment (UE) includes: determining that a beam fault recovery (BFR) has been triggered; determining BFR information associated with the BFR; determining whether at least a portion of the BFR information has not been transmitted since the BFR was triggered; and transmitting a BFR message including the BFR information based at least in part on the determination that the BFR has been triggered and the determination that at least a portion of the BFR information has not been transmitted since the BFR was triggered.

[0006] In some respects, the transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

[0007] In some respects, the BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0008] In some respects, the transmission of the BFR message, which includes the BFR information, is at least partially based on the determination that the BFR has been triggered and not canceled.

[0009] In some respects, the BFR has been triggered for one or more secondary cells of the UE.

[0010] In some aspects, the BFR information includes a candidate beam availability indication for one or more secondary cells, indicated in the bitmap of the BFR message.

[0011] In some aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0012] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0013] In some aspects, the BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0014] In some aspects, the method includes: determining, at least in part, based on sending the BFR message, the at least portion of the BFR information that has been sent, based at least in part on the inclusion of the secondary cell index in the BFR message.

[0015] In some aspects, the BFR information is defined as a secondary cell index associated with the BFR.

[0016] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0017] In some aspects, a method of wireless communication performed by a UE includes: determining that a BFR has been triggered; and transmitting a BFR message including BFR information based at least in part on the determination that the BFR has been triggered, wherein the BFR information includes a secondary cell index associated with the BFR, and wherein a condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information.

[0018] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0019] In some aspects, the BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0020] In some aspects, the method includes canceling the triggered BFR based at least in part on the transmission of the BFR message including the BFR information.

[0021] In some aspects, the BFR information is defined as the secondary cell index associated with the BFR.

[0022] In some aspects, a method of wireless communication performed by a base station includes: receiving a BFR message from a UE based at least in part on triggering a BFR at the UE, wherein the BFR message includes BFR information based at least in part on determination of at least a portion of BFR information that has not been transmitted since the BFR was triggered at the UE; and performing a BFR operation based at least in part on the BFR message.

[0023] In some respects, the transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

[0024] In some respects, the BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0025] In some respects, the BFR is associated with one or more secondary cells of the UE.

[0026] In some aspects, the BFR information includes a candidate beam availability indication for one or more secondary cells indicated in a bitmap of the BFR message, and the method further includes performing the BFR procedure at least in part based on the candidate beam availability indication.

[0027] In some aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0028] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0029] In some aspects, the BFR information is received in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0030] In some aspects, the BFR information is defined as a secondary cell index associated with the BFR.

[0031] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0032] In some aspects, a method of wireless communication performed by a base station includes: receiving a BFR message including BFR information based at least in part on triggering a BFR at a UE, wherein the BFR information includes a secondary cell index associated with the BFR, wherein a condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information; and performing a BFR operation based at least in part on the BFR message.

[0033] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0034] In some aspects, the BFR information is in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0035] In some aspects, the BFR information is defined as the secondary cell index associated with the BFR.

[0036] In some aspects, a UE for wireless communication includes: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: determine that a BFR has been triggered; determine BFR information associated with the BFR; determine whether at least a portion of the BFR information has not been transmitted since the BFR was triggered; and transmit a BFR message including the BFR information based at least in part on the determination that the BFR has been triggered and the determination that at least a portion of the BFR information has not been transmitted since the BFR was triggered.

[0037] In some respects, the transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

[0038] In some respects, the BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0039] In some respects, the transmission of the BFR message, which includes the BFR information, is at least partially based on the determination that the BFR has been triggered and not canceled.

[0040] In some respects, the BFR has been triggered for one or more secondary cells of the UE.

[0041] In some aspects, the BFR information includes a candidate beam availability indication for one or more secondary cells, indicated in the bitmap of the BFR message.

[0042] In some aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0043] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0044] In some aspects, the BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0045] In some aspects, the one or more processors are further configured to: determine, at least in part, the at least portion of the BFR information that has been sent, based at least in part on the transmission of the BFR message, including the secondary cell index in the BFR message.

[0046] In some aspects, the BFR information is defined as a secondary cell index associated with the BFR.

[0047] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0048] In some aspects, a UE for wireless communication includes: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: determine that a Broad Frame Response (BFR) has been triggered; and transmit a BFR message including BFR information based at least in part on the determination that the BFR has been triggered, wherein the BFR information includes a secondary cell index associated with the BFR, and wherein a condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information.

[0049] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0050] In some aspects, the BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0051] In some aspects, the one or more processors are further configured to cancel the triggered BFR at least in part based on the transmission of the BFR message including the BFR information.

[0052] In some aspects, the BFR information is defined as the secondary cell index associated with the BFR.

[0053] In some aspects, a base station for wireless communication includes: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: receive a BFR message from a UE at least in part based on triggering a BFR at the UE, wherein the BFR message includes BFR information at least in part based on determination of at least a portion of BFR information that has not been transmitted since the BFR was triggered at the UE; and perform BFR operations at least in part based on the BFR message.

[0054] In some respects, the transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

[0055] In some respects, the BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0056] In some respects, the BFR is associated with one or more secondary cells of the UE.

[0057] In some aspects, the BFR information includes a candidate beam availability indication for one or more secondary cells indicated in a bitmap of the BFR message, and the one or more processors are further configured to perform the BFR procedure based at least in part on the candidate beam availability indication.

[0058] In some aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0059] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0060] In some aspects, the BFR information is received in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0061] In some aspects, the BFR information is defined as a secondary cell index associated with the BFR.

[0062] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0063] In some aspects, a base station for wireless communication includes: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: receive a BFR message including BFR information based at least in part on triggering a BFR at a UE, wherein the BFR information includes a secondary cell index associated with the BFR, wherein a condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information; and perform BFR operations at least in part based on the BFR message.

[0064] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0065] In some aspects, the BFR information is in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0066] In some aspects, the BFR information is defined as the secondary cell index associated with the BFR.

[0067] In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes: one or more instructions that, when executed by one or more processors of a UE, cause the one or more processors to: determine that a BFR has been triggered; determine BFR information associated with the BFR; determine whether at least a portion of the BFR information has not been transmitted since the BFR was triggered; and transmit a BFR message including the BFR information based at least in part on the determination that the BFR has been triggered and the determination that at least a portion of the BFR information has not been transmitted since the BFR was triggered.

[0068] In some respects, the transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

[0069] In some respects, the BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0070] In some respects, the transmission of the BFR message, which includes the BFR information, is at least partially based on the determination that the BFR has been triggered and not canceled.

[0071] In some respects, the BFR has been triggered for one or more secondary cells of the UE.

[0072] In some aspects, the BFR information includes a candidate beam availability indication for one or more secondary cells, indicated in the bitmap of the BFR message.

[0073] In some aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0074] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0075] In some aspects, the BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0076] In some aspects, the one or more instructions, when executed by the one or more processors, also cause the one or more processors to: determine, at least in part, based on the transmission of the BFR message, that at least a portion of the BFR information has been transmitted, at least in part based on the inclusion of the secondary cell index in the BFR message.

[0077] In some aspects, the BFR information is defined as a secondary cell index associated with the BFR.

[0078] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0079] In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes: one or more instructions, when executed by one or more processors of a UE, causing the one or more processors to: determine that a BFR has been triggered; and transmit a BFR message including BFR information based at least in part on the determination that the BFR has been triggered, wherein the BFR information includes a secondary cell index associated with the BFR, and wherein a condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information.

[0080] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0081] In some aspects, the BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0082] In some aspects, the one or more instructions, when executed by the one or more processors, also cause the one or more processors to cancel the triggered BFR at least in part based on the transmission of the BFR message including the BFR information.

[0083] In some aspects, the BFR information is defined as the secondary cell index associated with the BFR.

[0084] In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes: one or more instructions, when executed by one or more processors of a base station, causing the one or more processors to: receive a BFR message from a UE based at least in part on triggering a BFR at the UE, wherein the BFR message includes BFR information based at least in part on determination of at least a portion of BFR information that has not been transmitted since the BFR was triggered at the UE; and perform a BFR operation based at least in part on the BFR message.

[0085] In some respects, the transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

[0086] In some respects, the BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0087] In some respects, the BFR is associated with one or more secondary cells of the UE.

[0088] In some aspects, the BFR information includes a candidate beam availability indication for one or more secondary cells indicated in the bitmap of the BFR message, and the one or more instructions, when executed by the one or more processors, cause the one or more processors to perform the BFR procedure at least in part based on the candidate beam availability indication.

[0089] In some aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0090] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0091] In some aspects, the BFR information is received in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0092] In some aspects, the BFR information is defined as a secondary cell index associated with the BFR.

[0093] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0094] In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes: one or more instructions, when executed by one or more processors of a base station, causing the one or more processors to: receive a BFR message including BFR information based at least in part on triggering a BFR at a UE, wherein the BFR information includes a secondary cell index associated with the BFR, wherein a condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information; and perform a BFR operation based at least in part on the BFR message.

[0095] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0096] In some aspects, the BFR information is in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0097] In some aspects, the BFR information is defined as the secondary cell index associated with the BFR.

[0098] In some aspects, an apparatus for wireless communication includes: a unit for determining that a BFR has been triggered; a unit for determining BFR information associated with the BFR; a unit for determining whether at least a portion of the BFR information has not been transmitted since the BFR was triggered; and a unit for transmitting a BFR message including the BFR information based at least in part on the determination that the BFR has been triggered and the determination that at least a portion of the BFR information has not been transmitted since the BFR was triggered.

[0099] In some respects, the transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

[0100] In some respects, the BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0101] In some respects, the transmission of the BFR message, which includes the BFR information, is at least partially based on the determination that the BFR has been triggered and not canceled.

[0102] In some respects, the BFR has been triggered for one or more secondary cells of the device.

[0103] In some aspects, the BFR information includes a candidate beam availability indication for one or more secondary cells, indicated in the bitmap of the BFR message.

[0104] In some aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0105] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0106] In some aspects, the BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0107] In some aspects, the apparatus includes: a unit for determining, at least in part, based on the transmission of the BFR message, that at least a portion of the BFR information has been transmitted, at least in part based on the inclusion of the secondary cell index in the BFR message.

[0108] In some aspects, the BFR information is defined as a secondary cell index associated with the BFR.

[0109] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0110] In some aspects, an apparatus for wireless communication includes: a unit for determining that a Broad Frame Free (BFR) has been triggered; and a unit for transmitting a BFR message including BFR information based at least in part on the determination that the BFR has been triggered, wherein the BFR information includes a secondary cell index associated with the BFR, and wherein a condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information.

[0111] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0112] In some aspects, the BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0113] In some aspects, the apparatus includes a unit for canceling the triggered BFR based at least in part on the transmission of the BFR message including the BFR information.

[0114] In some aspects, the BFR information is defined as the secondary cell index associated with the BFR.

[0115] In some aspects, an apparatus for wireless communication includes: a unit for receiving a BFR message from a UE based at least in part on triggering a BFR at the UE, wherein the BFR message includes BFR information based at least in part on determination of at least a portion of BFR information that has not been transmitted since the BFR was triggered at the UE; and a unit for performing a BFR operation based at least in part on the BFR message.

[0116] In some respects, the transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

[0117] In some respects, the BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0118] In some respects, the BFR is associated with one or more secondary cells of the UE.

[0119] In some aspects, the BFR information includes a candidate beam availability indication for one or more secondary cells indicated in a bitmap of the BFR message, and the apparatus further includes a unit for performing a BFR procedure based at least in part on the candidate beam availability indication.

[0120] In some aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0121] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0122] In some aspects, the BFR information is received in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0123] In some aspects, the BFR information is defined as a secondary cell index associated with the BFR.

[0124] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0125] In some aspects, an apparatus for wireless communication includes: a unit for receiving a BFR message including BFR information based at least in part on triggering a BFR at a UE, wherein the BFR information includes a secondary cell index associated with the BFR, wherein a condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information; and a unit for performing a BFR operation based at least in part on the BFR message.

[0126] In some aspects, the secondary cell index is included in the bitmap of the BFR message.

[0127] In some aspects, the BFR information is in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0128] In some aspects, the BFR information is defined as the secondary cell index associated with the BFR.

[0129] In general, the aspects include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment and / or processing systems as fully described herein with reference to the accompanying drawings and as illustrated by the drawings.

[0130] The foregoing has provided a fairly broad overview of the features and technical advantages of examples according to this disclosure in order to better understand the following detailed description. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for achieving the same purpose as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein (both their organization and manner of operation) and their associated advantages will be better understood when considered in conjunction with the accompanying drawings, based on the following description. Each drawing in the accompanying drawings is provided for illustrative and descriptive purposes and is not intended to define a limitation of the claims. Attached Figure Description

[0131] To gain a full understanding of the foregoing features of this disclosure, a more specific description of the invention, briefly summarized above, can be obtained by referring to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and are therefore not intended to limit the scope of the disclosure, as other equally valid aspects are permissible under this description. The same reference numerals in different drawings may identify the same or similar elements.

[0132] Figure 1 This is a diagram illustrating examples of wireless networks according to various aspects of this disclosure.

[0133] Figure 2 This is a diagram illustrating an example of communication between a base station and a UE in a wireless network according to various aspects of this disclosure.

[0134] Figure 3 This is a diagram illustrating an example of repeated transmission of a beam fault recovery (BFR) medium access control (MAC) control element (CE) according to various aspects of this disclosure, which is based at least in part on a command to perform logical channel prioritization when an uplink grant is received after the transmission of a BFR MAC CE.

[0135] Figure 4 This is a diagram illustrating an example of BFR signaling based at least in part on conditions relating to unreported BFR information, according to various aspects of this disclosure.

[0136] Figure 5 This is a diagram illustrating an example of BFR signaling based at least in part on BFR information including SCell indexes, according to various aspects of this disclosure.

[0137] Figure 6 This is a diagram illustrating an example structure of a BFR MAC CE according to various aspects of this disclosure.

[0138] Figure 7 and 8 This is a diagram illustrating, for example, an example process performed by a UE according to various aspects of this disclosure.

[0139] Figure 9 and 10 This is a diagram illustrating, for example, an example process performed by a base station according to various aspects of this disclosure.

[0140] Figure 11 and 12 This is a block diagram of an example device for wireless communication. Detailed Implementation

[0141] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will understand that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, an apparatus or a method may be implemented using any number of the aspects set forth herein. Furthermore, the scope of this disclosure is intended to cover such apparatuses or methods implemented using structures, functions, or structures and functions other than or different from the aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be embodied by one or more elements of the claims.

[0142] Several aspects of a telecommunications system will now be described with reference to various devices and techniques. These devices and techniques will be described in detail below and illustrated in the accompanying drawings, through various frames, 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 an element is implemented as hardware or software depends on the specific application and the design constraints imposed on the entire system.

[0143] It should be noted that while this document may use terms commonly associated with 5G or NR radio access technology (RAT) to describe aspects, aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or RATs after 5G (e.g., 6G).

[0144] Figure 1This is a diagram illustrating an example of a wireless network 100 according to this disclosure. Wireless network 100 may be or may include elements of a 5G (NR) network, an LTE network, etc. Wireless network 100 may include multiple base stations 110 (shown as BS110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, Transmit / Receive Point (TRP), etc. Each BS can provide communication coverage for a specific 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.

[0145] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. A macrocell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access by UEs with service subscriptions. A picocell can cover a relatively small geographic area and can allow unrestricted access by UEs with service subscriptions. A femtocell can cover a relatively small geographic area (e.g., a residential area) and can allow restricted access by UEs associated with that femtocell (e.g., UEs in a Closed User Group (CSG)). A BS used for macrocells can be referred to as a macro BS. A BS used for picocells can be referred to as a pico BS. A BS used for femtocells can be referred to as a femtocell BS or a home BS. Figure 1 In the examples shown, BS 110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5G NB,” and “cell” are used interchangeably herein.

[0146] In some respects, the cell may not be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile BS. In some respects, any suitable transport network can be used to interconnect BSs with each other and / or with 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, etc.).

[0147] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and transmit the data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE capable of relaying transmissions for other UEs. Figure 1 In the example shown, relay BS 110d can communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS can also be referred to as a relay station, relay base station, repeater, etc.

[0148] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs can have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs can have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs can have lower transmit power levels (e.g., 0.1 to 2 watts).

[0149] Network controller 130 can be coupled to a group of base stations (BSs) and can provide coordination and control for these BSs. Network controller 130 can communicate with the BSs via backhaul. BSs can also communicate with each other directly or indirectly, for example, via wireless or wired backhaul.

[0150] UE 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, terminal, mobile station, user unit, station, etc. UE may be a cellular phone (e.g., a smartphone), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet device, camera, gaming device, netbook, smartbook, ultrabook, medical device or apparatus, biometric sensor / device, wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), entertainment device (e.g., music or video device, or satellite radio unit, etc.), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0151] Some UEs can be considered Machine-Type Communication (MTC) or Evolved or Enhanced Machine-Type Communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, instruments, monitors, location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. Wireless nodes can provide connectivity to or to a network (e.g., a wide area network such as the Internet or cellular networks) via wired or wireless communication links, for example. Some UEs can be considered Internet of Things (IoT) devices, and / or can be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs can be considered Customer Premises Equipment (CPE). UE 120 can be included within a housing housing the components of UE 120, such as processor components, memory components, etc. In some aspects, the processor components and memory components can be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) can be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, etc.

[0152] Typically, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, air interface, etc. A frequency can also be referred to as a carrier, channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0153] In some respects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary for communication with each other). For example, UE 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, mesh networks, etc.). In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described herein as being performed by base station 110.

[0154] Devices in the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating band with a first frequency range (FR1) (spanning from 410 MHz to 7.125 GHz), and / or can communicate using an operating band with a second frequency range (FR2) (spanning from 24.25 GHz to 52.6 GHz). The frequencies between FR1 and FR2 are sometimes referred to as intermediate frequencies (IFs). Although a portion of FR1 is greater than 6 GHz, FR1 is generally referred to as the "below 6 GHz" band. Similarly, FR2 is generally referred to as the "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) designated as the "millimeter wave" band by the International Telecommunication Union (ITU). Therefore, unless otherwise explicitly stated, it should be understood that the terms "below 6 GHz" and the like (if used herein) can broadly refer to frequencies below 6 GHz, frequencies within FR1, and / or intermediate frequencies (e.g., above 7.125 GHz). Similarly, unless otherwise explicitly stated, it should be understood that the terms "millimeter wave" and the like (if used herein) can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequencies (e.g., below 24.25 GHz). It is anticipated that the frequencies included in FR1 and FR2 may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0155] As pointed out above, Figure 1 This is provided as an example. Other examples may differ from the one provided. Figure 1 The example described.

[0156] Figure 2 This is a diagram illustrating an example 200 of communication between a base station 110 and a UE 120 in a wireless network 100 according to various aspects of this disclosure. The base station 110 may be equipped with T antennas 234a to 234t, and the UE 120 may be equipped with R antennas 252a to 252r, wherein generally, T ≥ 1 and R ≥ 1.

[0157] At base station 110, transmitting processor 220 can 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 channel quality indicators (CQI) received from each UE, process (e.g., code and modulate) the data for each UE based at least in part on the MCS selected for each UE, and provide data symbols for all UEs. Transmitting processor 220 can also process system information (e.g., semi-static resource allocation information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper-layer signaling, etc.), and provide overhead symbols and control symbols. Transmitting processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS), demodulation reference signals (DMRS), etc.) and synchronization signals (e.g., primary synchronization signal (PSS) and secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding, if applicable) on data symbols, control symbols, overhead symbols, and / or reference symbols, and can provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 can (e.g., for OFDM, etc.) process its corresponding output symbol stream to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted via T antennas 234a to 234t respectively.

[0158] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations, and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can adjust (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM, etc.) to obtain a received symbol. MIMO detector 256 can obtain the received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide the detected symbols. Receiver processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine the Received Reference Signal Power (RSRP), Received Signal Strength Indicator (RSSI), Received Reference Signal Quality (RSRQ), Channel Quality Indicator (CQI), etc. In some aspects, one or more components of the UE 120 may be included in the housing 284.

[0159] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in a core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0160] On the uplink, at UE 120, the transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 can also generate reference symbols for one or more reference signals. Symbols from the transmit processor 264 can be pre-coded (if applicable) by the TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to base station 110. In some aspects, UE 120 includes a transceiver. The transceiver can include any combination of antenna 252, modulator and / or demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein.

[0161] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 can 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. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communication. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein.

[0162] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120 and / or Figure 2 Any other components may perform one or more techniques associated with Redundant Beam Failure Recovery (BFR) media access signaling, as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component can perform or direct, for example Figure 7 Process 700 Figure 8 The process 800 Figure 9 The process 900 Figure 10 The operation of process 1000 and / or other processes as described herein. Memory 242 and 282 may store data and program code 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, one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, translation, interpretation, etc.), may cause one or more processors, UE 120 and / or base station 110 to perform or instruct, for example... Figure 7 Process 700 Figure 8 The process 800 Figure 9 The process 900 Figure 10The operation of process 1000 and / or other processes as described herein. In some aspects, the execution instructions may include run instructions, translation instructions, compilation instructions, interpretation instructions, etc.

[0163] In some aspects, UE 120 may include: a unit for determining that a BFR has been triggered; a unit for determining BFR information associated with the BFR; a unit for determining whether at least a portion of the BFR information has not been transmitted since the BFR was triggered; a unit for transmitting a BFR message including BFR information based at least in part on the determination that a BFR has been triggered and the determination that at least a portion of the BFR information has not been transmitted since the BFR was triggered; a unit for transmitting a BFR message including BFR information based at least in part on the determination that a BFR has been triggered, wherein the BFR information includes a secondary cell index associated with the BFR, wherein the condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information; and so on. In some aspects, such a unit may include a combination of Figure 2 One or more components of the described UE 120, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0164] In some aspects, base station 110 may include: a unit for receiving a BFR message from a UE at least partially based on triggering a BFR at the UE, wherein the BFR message includes BFR information at least partially based on determination of at least a portion of BFR information that has not been transmitted since the BFR was triggered at the UE; a unit for performing a BFR operation at least partially based on the BFR message; a unit for receiving a BFR message including BFR information at least partially based on triggering a BFR at the UE, wherein the BFR information includes a secondary cell index associated with the BFR, wherein the condition for canceling the triggered BFR is satisfied at least partially based on the transmission of the BFR information; and a unit for performing a BFR operation at least partially based on the BFR message; and so on. In some aspects, such a unit may include a combination of Figure 2 One or more components of the described base station 110, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TXMIMO processor 230, MOD 232, antenna 234, etc.

[0165] As pointed out above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 The example described.

[0166] UEs and base stations can communicate with each other using beamforming. A transmitter (e.g., a UE or base station) can generate a transmit beam by applying a spatial filter to an antenna array, and a receiver (e.g., a UE or base station) can generate a corresponding receive beam by applying another spatial filter to the antenna array. The use of beamforming can improve overall network throughput and gain, especially in higher frequency ranges where omnidirectional or pseudo-omnidirectional transmission may be associated with prohibited power requirements and radiation levels. UEs and base stations can use beam selection and refinement processes to determine the beam pairs used for communication between them.

[0167] The UE can monitor reference signals transmitted by the base station to detect beam faults. A beam fault can refer to one or more beams on the UE side or the BS side failing to provide sufficient coverage for communication between the UE and the base station. Beam faults can occur due to changing channel conditions, obstacles, distance from the base station transmitting the beam, interference, etc. The UE can identify a beam fault when the reference signal of the first beam set fails to meet a threshold (e.g., Qout threshold, etc.) at multiple monitoring points. If the wireless communication device is to continue using beamforming for communication, beam fault detection (BFD) at the UE may need to perform a beam fault recovery (BFR) procedure. In some aspects, the BFR procedure may involve reporting that a beam fault has occurred and / or reporting candidate beams that the UE can switch to to continue beamforming-based communication.

[0168] In some aspects, the UE can use carrier aggregation (CA) for communication. CA deployment may involve one or more primary cells (Pcells) and one or more secondary cells (Scells). PCcells can operate on a primary frequency (e.g., a first frequency). The UE can perform initial connection establishment and / or connection re-establishment procedures on the PCcell. Scells can operate on a secondary frequency (e.g., a second frequency different from the first frequency). Scells can be configured via PCcells. Scells can provide additional radio resources for communicating with the UE. The UE's PCcells and SCcells can be collectively referred to as the UE's serving cell. In some aspects, a PCcell or SCcell can be referred to as a component carrier (CC). In some aspects, communication on a PCcell or SCcell can be configured via a bandwidth portion (BWP).

[0169] In some respects, beam failures may occur on a SCell of the UE. For example, the UE may monitor the reference signal (RS) quality of the SCell configuration during BFD. If the UE detects a beam failure, it may declare the beam failure and thus send a beam failure recovery request (such as a scheduling request (SR), and sometimes referred to as a BFR message) to the base station, including a BFR medium access control (MAC) control element (CE). If the uplink shared channel (UL-SCH) resource can accommodate a BFR MAC CE, it may be sent in any available UL-SCH resource. The UE may trigger an SR for each SCell BFR that has been triggered. The BFR MAC CE may include an index associated with the failed SCell (referred to herein as the SCell index) and optional information indicating candidate beams for the BFR procedure.

[0170] In some aspects, when a MAC PDU is transmitted and the MAC PDU includes a BFR MAC CE or a truncated BFR MAC CE containing beam fault information for the SCell, all BFRs triggered before the MAC Protocol Data Unit (PDU) component for beam fault recovery of the SCell can be cancelled. In other words, once beam fault information for the SCell has been transmitted, all BFRs triggered before the MAC PDU component of the MAC PDU providing the beam fault information can be cancelled. However, in some aspects, if a BFR MAC CE is to be transmitted, the UE can be forced to perform Logical Channel Prioritization (LCP) upon receiving an uplink grant. In some aspects, beam fault information can be defined as one or more octets containing a candidate beam availability indication for the SCell indicated by the BFR MAC CE.

[0171] The UE may spend a certain amount of time identifying candidate beams for BFR, for example, due to antenna tuning time and the determination of candidate beams. While determining candidate beams, the UE may continue to transmit BFR MAC CE on the uplink grant due to LCP commands. Since the transmitted BFR MAC CE does not include beam failure information, BFR may not be canceled, and the transmission of BFR MAC CE can continue until candidate beams are determined and signaled to the BS. This consumes significant resources and increases the overhead associated with repeatedly signaling MAC CEs for both the UE and the BS.

[0172] The techniques and apparatus described herein provide methods for reducing redundant transmissions of BFR MAC CEs, enabling the UE to skip transmissions of one or more BFR MAC CEs. In some aspects, the UE may transmit a BFR MAC CE based at least in part on whether BFR information to be included in the BFR MAC CE has been transmitted (e.g., reported) since the most recently triggered BFR. In some aspects, the BFR information that triggers the cancellation of a BFR may be defined as an SCell index associated with the SCell for which the BFR was triggered. Therefore, the first BFR MAC CE associated with the BFR may satisfy the conditions for triggering the cancellation of the BFR, thereby eliminating the need to transmit subsequent BFR MAC CEs. In this way, resource consumption and overhead associated with BFR signaling are reduced.

[0173] Figure 3 This is a figure illustrating example 300 of repeated transmission of a BFR MAC CE. According to various aspects of this disclosure, the repeated transmission of example 300 may occur at least in part based on a command to execute an LCP upon receiving an uplink grant after a BFR MAC CE has been transmitted. As shown, example 300 includes UE 120 and BS 110. Actions performed by UE 120 are indicated by upward arrows (such as those indicated by reference numeral 305), and actions performed by BS 110 are indicated by downward arrows (such as those indicated by reference numeral 315). UE 120 and BS 110 of example 300 may be associated with a beamforming communication link involving at least one SCell.

[0174] As shown by reference numeral 305 in the attached figure, UE 120 can determine whether to trigger a BFR on a SCell of UE 120. For example, UE 120 can determine whether to trigger a BFR based at least in part on a BFD procedure. More specifically, UE 120 can determine that one or more measurements on the SCell have failed to meet a threshold, the block error rate on the SCell has failed to meet a threshold, and so on.

[0175] UE 120 may transmit one or more BFR MAC CEs 310, at least in part, based on triggering a BFR on a SCell. The BFR MAC CE may indicate the SCell associated with the BFR (e.g., at least in part based on the SCell index). In some aspects, the BFR MAC CE may indicate a candidate beam index corresponding to the beam selected by UE 120 (such as the optimal beam for the BFR, determined by UE 120). For a more detailed description of the contents of the BFR MAC CE, see [link to relevant documentation]. Figure 6 .

[0176] As shown in the figure, UE 120 can transmit BFR MAC CE 310 on uplink grant 315. For example, UE 120 can be forced to perform LCP for BFR MAC CE, so UE 120 can transmit BFR MAC CE 310 on every available uplink grant 315. As further shown, BFR MAC CE 310 does not include BFR information. In some aspects, BFR information refers to information indicating the optimal beam. In other aspects, such as regarding Figure 5 The BFR information described refers to the SCell index that triggered the BFR. By defining the BFR information to include the SCell index, the conditions for canceling the triggered BFR can be met, thereby reducing the number of BFR MAC CE 310s that the UE 120 needs to send.

[0177] As shown by reference numeral 320, UE 120 may spend a certain amount of time identifying candidate beams for BFR. After determining the candidate beams, UE 120 may send (e.g., report) a BFR MACCE 325 that includes BFR information identifying the candidate beams. Therefore, as shown by reference numeral 330, UE 120 may cancel triggered BFRs. For example, UE 120 may cancel all BFRs triggered before the MAC PDU component of BFR MAC CE 325, at least in part, based on the fact that BFR MAC CE 325 includes a BFR MAC CE or a truncated BFR MAC CE (which contains beam fault information (also referred to as BFR information) for the SCell associated with the BFR).

[0178] If UE 120 transmits one or more BFR MAC CE 310s before determining candidate beams, UE 120 can use a large amount of signaling resources for redundant transmissions. Some techniques and apparatus described herein provide methods for reducing redundant transmissions of BFR MAC CE 310s, allowing UE 120 to skip transmissions of one or more BFR MAC CE 310s (hence the dashed lines indicating BFR MAC CE 310s). For example, in some aspects, as indicated by reference numeral 335, the UE can transmit BFR MAC CE 310 / 325 at least in part based on whether BFR information to be included in BFR MAC CE 310 / 325 has been transmitted (e.g., reported) since the most recently triggered BFR 305. Figure 4This aspect is described in more detail. In some aspects, as indicated by reference numeral 340 in the accompanying drawings, the BFR information that triggers the cancellation of a BFR can be defined as the SCell index associated with the SCell for which the BFR was triggered. Therefore, the first BFR MAC CE 310 can satisfy the conditions for triggering the cancellation of a BFR, thereby eliminating the need to send subsequent BFR MAC CEs 310 and 325.

[0179] As pointed out above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0180] Figure 4 This is a diagram illustrating example 400 of BFR signaling based at least in part on conditions relating to unreported BFR information, according to various aspects of this disclosure. As shown, example 400 includes UE 120 and BS 110. Figure 3 As shown, actions performed by UE 120 are indicated by an upward arrow, and actions performed by BS 110 are indicated by a downward arrow. In some aspects, at least one of the operations described as being performed by UE 120 can be performed by the MAC entity of UE 120.

[0181] In Example 400, as indicated by reference numeral 405, if no BFR information to be included in the BFR MAC CE has been sent (e.g., reported) since the most recently triggered BFR, UE 120 may send a BFR MAC CE. For example, as indicated by reference numeral 410, UE 120 may send a BFR MAC CE with BFR information after selecting a candidate beam, based at least in part on the availability of UL-SCH resources (e.g., uplink grant) for transmission and the ability of UL-SCH resources to accommodate a BFR MAC CE with BFR information. Therefore, UE 120 may cancel the triggered BFR based at least in part on sending a BFR MAC CE including BFR information. If BFR information has already been sent, or if no BFR information is to be included in the BFR MAC CE, UE 120 may not send a BFR MAC CE, as indicated, for example, by reference numeral 415. Therefore, compared to MAC CE, which indiscriminately reports without BFR information, UE 120 can reduce the overhead and resource utilization associated with BFR reporting.

[0182] In some aspects, UE 120 may send a first BFR MAC CE, and then may send a second BFR MAC CE after selecting a candidate beam. For example, the BFR MAC CE may include a beamless indicator, such as an empty beam value. The second BFR MAC CE may include a beam index corresponding to the candidate beam selected by UE 120.

[0183] In some respects, the conditions used to send a BFR MAC CE can be defined by algorithms such as Algorithm 1 below:

[0184] Algorithm 1

[0185] 1> If the beam fault recovery process determines that at least one BFR has been triggered and not canceled, then:

[0186] 2> As a result of LCP, if the UL-SCH resource is available for the new transmission and if the UL-SCH resource can accommodate the BFR MAC CE plus the BFR MAC CE subheader; and

[0187] 2> If the UE has new beam fault recovery information that has not been reported since the last BFR was triggered, then:

[0188] 3> Instructions for reuse and assembly processes to generate BFR MAC CE.

[0189] 2> Otherwise, as a result of LCP, if the UL-SCH resource is available for the new transmission, and the UL-SCH resource is capable of accommodating the truncated BFR MAC CE plus the truncated BFR MAC CE subheader; and

[0190] 2> If the UE has new beam fault recovery information that has not been reported since the last BFR was triggered, then:

[0191] 3> Instructions for reuse and assembly processes to produce truncated BFR MAC CE.

[0192] 2> Otherwise:

[0193] 3> For each SCell that has been triggered and not canceled by a BFR, trigger an SR for SCell beam fault recovery.

[0194] As pointed out above, Figure 4 This is provided as an example. Other examples may differ from the one provided. Figure 4 The example described.

[0195] Figure 5This is a diagram illustrating example 500 of BFR signaling, at least in part, based on BFR information including SCell indexes, according to various aspects of this disclosure. As shown, example 500 includes UE 120 and BS 110. Figure 3 and 4 In this context, actions performed by UE 120 are indicated by an upward arrow, and actions performed by BS 110 are indicated by a downward arrow. In some aspects, at least one of the operations described as being performed by UE 120 can be performed by the MAC entity of UE 120.

[0196] In Example 500, as shown by reference numeral 505, "BFR information" (sometimes referred to as "beam failure information") may include an SCell index. For example, "BFR information" may be defined as a value in the bit field indicating the SCell associated with the BFR (e.g., Figure 6 C in Example 600 i Therefore, the BFR MAC CE 510 indicating the SCell index associated with the BFR can satisfy the conditions for canceling the BFR, as shown by reference numeral 515 in the figure. Thus, the UE 120 can save signaling resources that would otherwise be used to repeatedly transmit MAC CEs with SCell indices but without candidate beam availability indications for the SCell. In some aspects ( Figure 5 In (not shown), UE 120 can use signals to notify BS 110 of information indicating candidate beams for SCell, such as using MAC CE on uplink grant, etc.

[0197] In some respects, regarding Figure 4 and Figure 5 The described operations can be combined. For example, if BFR information to be sent in the BFRMAC CE has not yet been sent, UE 120 sends the BFR MAC CE, and the BFR information may include a SCell index or a field indicating the SCell index.

[0198] As pointed out above, Figure 5 This is provided as an example. Other examples may differ from the one provided. Figure 5 The example described.

[0199] Figure 6 This is a diagram illustrating an example structure 600 of a BFR MAC CE according to various aspects of this disclosure. As shown, structure 600 includes a bitmap 605, a set of candidate beam availability indication (AC) fields 610, and a set of candidate reference signal (RS) ID fields 615 corresponding to the set of AC fields 610. The C fields of bitmap 605 are set to a first value (e.g., 1). iThe field can indicate beam fault detection and the presence of an octet containing the AC field 610 for the SCell with a serving cell index (e.g., ServCellIndex)i. The C field is set to a second value (e.g., 0). i The field indicates that no beam fault was detected, and the octet containing the AC field 610 does not exist for the SCell with ServCellIndex i. The octet containing the AC field 610 can exist in ascending order based on ServCellIndex. In some aspects, such as in combination... Figure 5 In more detail, the BFR information used for BFR MAC CE may include Ci or may be defined as Ci.

[0200] The AC field 610 can indicate the presence of the candidate reference signal (RS) ID field 615 in the eight-bit byte. The AC field 610 can be set to a first value if at least one SSB in the candidateBeamRSSCellList has a synchronization signal reference signal received power (SS-RSRP) satisfying the rsrp-ThresholdBFR, or at least one CSI-RS in the candidateBeamRSSCellList has a channel state information reference signal (CSI-RS) satisfying the rsrp-ThresholdBFR (CSI-RSRP). Otherwise, the AC field 610 can be set to a second value. If the AC field 610 is set to the first value, a candidate RS ID field 615 is present. If the AC field 610 is set to the second value, one or more reserved bits are present. In some aspects, such as combining... Figure 4 The BFR information described may include or be defined as AC field 610 and / or candidate RS ID field 615.

[0201] As pointed out above, Figure 6 This is provided as an example. Other examples may differ from the one provided. Figure 6 The example described.

[0202] Figure 7 This is a diagram illustrating, for example, an example process 700 performed by a UE according to various aspects of this disclosure. Example process 700 is an example of an operation performed by a UE (e.g., UE 120, etc.) associated with a technique for mitigating redundant beam failure recovery media access signaling. In some aspects, one or more operations described with respect to example 700 can be performed by… Figure 11One or more components (such as sending component 1104, receiving component 1102, BFD / BFR component 1108, determining component 1110, etc.) are used to perform this action.

[0203] like Figure 7 As shown, in some aspects, process 700 may include determining that a BFR has been triggered (block 710). For example, the UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may determine that a BFR has been triggered, as described above. In some aspects, the operation indicated by block 710 may be performed by receive component 1102 or BFD / BFR component 1108.

[0204] like Figure 7 Further, in some aspects, process 700 may include: determining BFR information associated with the BFR (block 720). For example, the UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may determine the BFR information associated with the BFR as described above. In some aspects, the operation indicated by block 720 may be performed by receive component 1102 or BFD / BFR component 1108. In some aspects, the UE may determine the BFR information after sending one or more BFR messages.

[0205] like Figure 7 As further shown, in some aspects, process 700 may include determining whether at least a portion of BFR information has not been transmitted since the BFR was triggered (block 730). For example, the UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may determine whether at least a portion of BFR information has not been transmitted since the BFR was triggered, as described above. In some aspects, the operation indicated by block 730 may be performed by the transmitting component 1104, the BFD / BFR component 1108, or the determining component 1110.

[0206] like Figure 7As further shown, in some aspects, process 700 may include transmitting a BFR message including BFR information (block 740) based at least in part on a determination that a BFR has been triggered and a determination that at least a portion of BFR information has not been transmitted since the BFR was triggered. For example, a UE (e.g., using controller / processor 280, transmit processor 264, TXMIMO processor 266, MOD 254, antenna 252, etc.) may transmit a BFR message including BFR information based at least in part on a determination that a BFR has been triggered and a determination that at least a portion of BFR information has not been transmitted since the BFR was triggered. In some aspects, the operation indicated by block 740 may be performed by transmit component 1102 or BFD / BFR component 1108.

[0207] Process 700 may include additional aspects, such as any single aspect or any combination thereof described below and / or in conjunction with one or more other process descriptions elsewhere described herein.

[0208] In the first aspect, the transmission of BFR messages, including BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the capacity of uplink shared channel resources to accommodate BFR messages and their subheaders.

[0209] In the second aspect, either alone or in combination with the first aspect, a truncated BFR message is included at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0210] In the third aspect, the transmission of BFR messages, including BFR information, may be based, either alone or in combination with one or more of the first and second aspects, or at least in part on the determination that a BFR has been triggered and not canceled.

[0211] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, BFR has been triggered for one or more secondary cells of the UE.

[0212] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, the BFR information includes a candidate beam availability indication for one or more secondary cells, indicated in the bitmap of the BFR message.

[0213] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0214] In the seventh aspect, either alone or in combination with one or more aspects from the first to the sixth aspects, the secondary cell index is included in the bitmap of the BFR message.

[0215] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the BFR information is provided in the first eight-bit byte of the Media Access Control control element of the BFR message.

[0216] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, process 700 includes: determining, at least in part, a portion of the BFR information that has been transmitted, based at least in part on the transmission of a BFR message and including a secondary cell index in the BFR message. In some aspects, the operation of the ninth aspect may be performed by the BFD / BFR component 1108 or the determining component 1110.

[0217] In the tenth aspect, either alone or in combination with one or more aspects from the first to the ninth aspect, BFR information is defined as the secondary cell index associated with BFR.

[0218] In the eleventh aspect, either alone or in combination with one or more aspects from the first to the tenth aspects, the secondary cell index is included in the bitmap of the BFR message.

[0219] Although Figure 7 An example box of process 700 is shown, but in some aspects, process 700 may include... Figure 7 The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in process 700 may be executed in parallel.

[0220] Figure 8 This is a diagram illustrating, for example, an example process 800 performed by a UE according to various aspects of this disclosure. Example process 800 is an example of an operation performed by a UE (e.g., UE 120, etc.) associated with a technique for mitigating redundant beam failure recovery media access signaling. In some aspects, one or more operations described with respect to example 800 can be performed by… Figure 11 One or more components (such as sending component 1104, receiving component 1102, BFD / BFR component 1108, determining component 1110, etc.) are used to perform this action.

[0221] like Figure 8As shown, in some aspects, process 800 may include determining that a beam fault recovery (BFR) has been triggered (block 810). For example, the UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may determine that a beam fault recovery (BFR) has been triggered, as described above. In some aspects, the operation indicated by block 810 may be performed by receive component 1102 or BFD / BFR component 1108.

[0222] like Figure 8 Further, in some aspects, process 800 may include: transmitting a BFR message including BFR information based at least in part on determining that a BFR has been triggered, wherein the BFR information includes a secondary cell index associated with the BFR, and wherein the conditions for canceling the triggered BFR are satisfied at least in part based on the transmission of the BFR information (block 820). For example, a UE (e.g., using controller / processor 280, transmission processor 264, TX MIMO processor 266, MOD 254, antenna 252, etc.) may transmit a BFR message including BFR information based at least in part on determining that a BFR has been triggered, as described above. In some aspects, the BFR information includes a secondary cell index associated with the BFR. In some aspects, the conditions for canceling the triggered BFR are satisfied at least in part based on the transmission of the BFR information. In some aspects, the operation indicated by block 820 may be performed by transmission component 1104 or BFD / BFR component 1108.

[0223] Process 800 may include additional aspects, such as any single aspect or any combination thereof described below and / or in conjunction with one or more other process descriptions elsewhere described herein.

[0224] In the first aspect, the secondary cell index is included in the bitmap of the BFR message.

[0225] In the second aspect, either alone or in combination with the first aspect, the BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0226] In the third aspect, either alone or in combination with one or more of the first and second aspects, process 800 includes: canceling a triggered BFR based at least in part on the transmission of a BFR message including BFR information. In some aspects, the operation of the third aspect may be performed by the sending component 1104 or the BFD / BFR component 1108.

[0227] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, BFR information is defined as the secondary cell index associated with BFR.

[0228] Although Figure 8 An example box of process 800 is shown, but in some aspects, process 800 may include... Figure 8 The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in process 800 may be executed in parallel.

[0229] Figure 9 This is a diagram illustrating, for example, an example process 900 performed by a base station according to various aspects of this disclosure. Example process 900 is an example of an operation performed by a base station (e.g., BS 110, etc.) associated with techniques for mitigating redundant beam fault recovery media access signaling. In some aspects, one or more operations described with respect to example 900 can be performed by… Figure 12 It is performed by one or more components (such as sending component 1204, receiving component 1202, BFR component 1208, etc.).

[0230] like Figure 9 As shown, in some aspects, process 900 may include: receiving a BFR message from the UE based at least in part on triggering a BFR at the UE, wherein the BFR message includes BFR information based at least in part on determination of at least a portion of BFR information that has not been transmitted since the BFR was triggered at the UE (block 910). For example, a base station (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, etc.) may receive a BFR message from the UE based at least in part on triggering a BFR at the UE, as described above. In some aspects, the BFR message includes BFR information based at least in part on determination of at least a portion of BFR information that has not been transmitted since the BFR was triggered at the UE. In some aspects, the operation of block 910 may be performed by receive component 1202 or BFR component 1208.

[0231] like Figure 9 As further shown, in some aspects, process 900 may include performing BFR operations at least in part based on BFR messages (block 920). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may perform BFR operations at least in part based on BFR messages, as described above. In some aspects, the operation of block 920 may be performed by transmit component 1204 or BFR component 1208.

[0232] Process 900 may include additional aspects, such as any single aspect or any combination thereof described below and / or in conjunction with one or more other process descriptions elsewhere described herein.

[0233] In the first aspect, the transmission of BFR messages, including BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the capacity of uplink shared channel resources to accommodate BFR messages and their subheaders.

[0234] In the second aspect, either alone or in combination with the first aspect, a truncated BFR message is included at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

[0235] In the third aspect, either alone or in combination with one or more of the first and second aspects, the BFR is associated with one or more secondary cells of the UE.

[0236] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, process 900 includes performing the BFR process based at least in part on candidate beam availability indications. In some aspects, the operation of the fourth aspect may be performed by BFR component 1208.

[0237] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, at least a portion of the BFR information includes a secondary cell index associated with the BFR.

[0238] In the sixth aspect, either alone or in combination with one or more aspects from the first to the fifth aspects, the secondary cell index is included in the bitmap of the BFR message.

[0239] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the BFR information is received in the first eight-bit byte of the Media Access Control control element of the BFR message.

[0240] In the eighth aspect, either alone or in combination with one or more aspects from the first to the seventh aspect, BFR information is defined as the secondary cell index associated with BFR.

[0241] In the ninth aspect, either alone or in combination with one or more aspects from the first to the eighth aspects, the secondary cell index is included in the bitmap of the BFR message.

[0242] Although Figure 9 An example box of process 900 is shown, but in some aspects, process 900 may include... Figure 9The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in process 900 may be executed in parallel.

[0243] Figure 10 This is a diagram illustrating, for example, an example process 1000 performed by a base station according to various aspects of this disclosure. Example process 1000 is an example of an operation performed by a base station (e.g., base station 110, etc.) associated with techniques for mitigating redundant beam fault recovery media access signaling. In some aspects, one or more operations described with respect to example 1000 can be performed by… Figure 12 It is performed by one or more components (such as sending component 1204, receiving component 1202, BFR component 1208, etc.).

[0244] like Figure 10 As shown, in some aspects, process 1000 may include: receiving a BFR message including BFR information based at least in part on triggering a BFR at the UE, wherein the BFR information includes a secondary cell index associated with the BFR, and wherein the condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information (block 1010). For example, a base station (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, etc.) may receive a BFR message including BFR information based at least in part on triggering a BFR at the UE, as described above. In some aspects, the BFR information includes a secondary cell index associated with the BFR. In some aspects, the condition for canceling the triggered BFR is satisfied at least in part based on the transmission of the BFR information. In some aspects, the operation of block 1010 may be performed by the receive component 1202 or the BFR component 1208.

[0245] like Figure 10 As further shown, in some aspects, process 1000 may include performing BFR operations at least in part based on BFR messages (block 1020). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TXMIMO processor 230, MOD 232, antenna 234, etc.) may perform BFR operations at least in part based on BFR messages, as described above. In some aspects, the operation of block 1010 may be performed by transmit component 1204, receive component 1202, or BFR component 1208.

[0246] Process 1000 may include additional aspects, such as any single aspect or any combination thereof described below and / or in conjunction with one or more other process descriptions elsewhere described herein.

[0247] In the first aspect, the secondary cell index is included in the bitmap of the BFR message.

[0248] In the second aspect, either alone or in combination with the first aspect, the BFR information is in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

[0249] In the third aspect, either alone or in combination with one or more of the first and second aspects, BFR information is defined as the secondary cell index associated with BFR.

[0250] Although Figure 10 An example box of process 1000 is shown, but in some aspects, process 1000 may include... Figure 10 The boxes depicted in the diagram are compared to additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner. Alternatively, two or more boxes in process 1000 may be executed in parallel.

[0251] Figure 11 This is a block diagram of an example device 1100 for wireless communication. Device 1100 may be a UE, or a UE may include device 1100. In some aspects, device 1100 includes a receiving component 1102 and a transmitting component 1104, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1100 can use the receiving component 1102 and the transmitting component 1104 to communicate with another device 1106 (e.g., a UE, a base station, or another wireless communication device). As further shown, device 1100 may include one or more of the BFD / BFR component 1108 or determining components 1110, and other examples.

[0252] In some respects, device 1100 can be configured to perform the functions described herein. Figure 3-6 One or more operations described herein. Alternatively or concurrently, device 1100 may be configured to perform one or more processes described herein, such as Figure 7 Process 700 Figure 8 The process 800 or a combination thereof. In some respects, Figure 11 The device 1100 and / or one or more components shown may include the above-described combination. Figure 2 One or more components of the UE as described. Alternatively or in addition, Figure 11 One or more components shown can be combined above. Figure 2The description refers to implementation within one or more components. Alternatively, one or more components in the set of components may be implemented, at least partially, as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0253] Receiver 1102 may receive communications from device 1106, such as reference signals (e.g., associated with BFD / BFR processes), control information, data communications, or combinations thereof. Receiver 1102 may provide the received communications to one or more other components of device 1100. In some aspects, receiver 1102 may perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 1106. In some aspects, receiver 1102 may include the combinations described above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, and memories, or combinations thereof.

[0254] Transmitting component 1104 can transmit communications to device 1106, such as reference signals, control information (e.g., BFR MACCE), data communications, or combinations thereof. In some aspects, one or more other components of device 1106 can generate communications and provide the generated communications to transmitting component 1104 for transmission to device 1106. In some aspects, transmitting component 1104 can perform signal processing on the generated communications (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples), and can transmit the processed signals to device 1106. In some aspects, transmitting component 1104 can include the combinations described above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1104 may be co-located with the receive component 1102 in a transceiver.

[0255] BFD / BFR component 1108 may determine, for example, at least in part, that a BFR has been triggered based on the BFD process. BFD / BFR component 1108 may determine BFR information associated with the BFR. Determining component 1110 may determine whether at least a portion of the BFR information has not been sent since the BFR was triggered. BFD / BFR component 1108 or sending component 1104 may send a BFR message including BFR information based at least in part on the determination that a BFR has been triggered and the determination that at least a portion of the BFR information has not been sent since the BFR was triggered.

[0256] In some respects, the BFD / BFR component 1108 can determine that a beam BFR has been triggered. The transmitting component 1104 or the BFD / BFR component 1108 can transmit a BFR message including BFR information, at least in part, based on the determination that a BFR has been triggered. This BFR information includes a secondary cell index associated with the BFR, and the conditions for canceling the triggered BFR are met at least in part based on the transmission of the BFR information.

[0257] Figure 11 The number and arrangement of components shown are provided as an example. In reality, they can exist in combination with... Figure 11 The components shown are compared to additional components, fewer components, different components, or components arranged in a different way. Furthermore, Figure 11 The two or more components shown can be implemented within a single component, or Figure 11 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 11 The set (one or more) components shown can perform actions described by Figure 11 The other set of components shown performs one or more functions.

[0258] Figure 12 This is a block diagram of an example device 1200 for wireless communication. Device 1200 may be a base station, or a base station may include device 1200. In some aspects, device 1200 includes a receiving component 1202 and a transmitting component 1204, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1200 can use the receiving component 1202 and the transmitting component 1204 to communicate with another device 1206 (e.g., a UE, a base station, or another wireless communication device). As further shown, device 1200 may include a BFR component 1208.

[0259] In some respects, device 1200 can be configured to perform the functions described herein. Figure 3-6One or more operations described herein. Alternatively or concurrently, the apparatus 1200 may be configured to perform one or more processes described herein, such as... Figure 9 The process 900 Figure 10 The process 1000 or a combination thereof. In some respects, Figure 12 The device 1200 and / or one or more components shown may include the above-described combination. Figure 2 One or more components of the described base station. Alternatively, Figure 12 One or more components shown can be combined above. Figure 2 The description refers to implementation within one or more components. Alternatively, one or more components in the set of components may be implemented, at least partially, as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of the component.

[0260] Receiver 1202 may receive communications from device 1206, such as reference signals, control information, data communications, or combinations thereof. Receiver 1202 may provide the received communications to one or more other components of device 1200. In some aspects, receiver 1202 may perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, and other examples), and may provide the processed signal to one or more other components of device 1206. In some aspects, receiver 1202 may include the elements described above. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, and memories, or combinations thereof.

[0261] Transmitting component 1204 can transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1206. In some aspects, one or more other components of device 1206 can generate communications and provide the generated communications to transmitting component 1204 for transmission to device 1206. In some aspects, transmitting component 1204 can perform signal processing (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, and other examples) on the generated communications and can transmit the processed signals to device 1206. In some aspects, transmitting component 1204 can include the combinations described above. Figure 2 The described base station includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1204 may be co-located with the receive component 1202 in a transceiver.

[0262] In some aspects, receiving component 1202 or BFR component 1208 may receive a BFR message from the UE based at least in part on triggering a BFR at the UE, wherein the BFR message includes BFR information based at least in part on determination of at least a portion of BFR information that has not been sent since the BFR was triggered at the UE. BFR component 1208 may perform BFR operations based at least in part on the BFR message.

[0263] In some aspects, receiving component 1202 or BFR component 1208 may receive a BFR message including BFR information based at least in part on triggering BFR at the UE, wherein the BFR information includes a secondary cell index associated with the BFR, and wherein the conditions for canceling the triggered BFR are satisfied at least in part based on the transmission of the BFR information. BFR component 1208 may perform BFR operations at least in part based on the BFR message.

[0264] Figure 12 The number and arrangement of components shown are provided as an example. In reality, they can exist in combination with... Figure 12 The components shown are compared to additional components, fewer components, different components, or components arranged in a different way. Furthermore, Figure 12 The two or more components shown can be implemented within a single component, or Figure 12 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 12 The set (one or more) components shown can perform actions described by Figure 12 The other set of components shown performs one or more functions.

[0265] The foregoing disclosure provides explanations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations may be made based on the foregoing disclosure, or modifications and variations may be derived from practice in the aspects.

[0266] As used herein, the term "component" is intended to be interpreted broadly 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. It will be apparent that the systems and / or methods described herein can be implemented using various forms of hardware, firmware, and / or combinations of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not intended to limit any aspect. Therefore, while the operation and behavior of the systems and / or methods are described herein without reference to specific software code, it is to be understood that software and hardware can be designed to implement the systems and / or methods, at least in part, based on the descriptions herein.

[0267] As used in this article, depending on the context, satisfying the threshold can refer to a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0268] Even if a specific combination of features is recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the aspects. In fact, many of these features can be combined in ways that are not specifically recited in the claims and / or specifically disclosed in the specification. While each dependent claim listed below may directly depend on only one claim, the disclosure of each aspect includes a combination of each dependent claim with every other claim in the claim set. The phrase “at least one of” in the list of items refers to any combination of those items, including single members. For example, “at least one of a, b, or c” is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination of multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0269] None of the elements, actions, or instructions used herein should be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and are interchangeable with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items referenced in combination with the article “the” and is interchangeable 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, unrelated items, or a combination of related and unrelated items, etc.) and are interchangeable with “one or more.” Where only one item is anticipated, the phrase “only one” or similar language is used. Furthermore, as used herein, the terms “has,” “have,” “having,” etc., are intended to be open-ended terms. Furthermore, unless explicitly stated otherwise, the phrase “based on” is intended to mean “at least partially based on.” Furthermore, as used herein, the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and / or” unless otherwise expressly stated (e.g., if used in conjunction with “any” or “only one of”).

Claims

1. A method for wireless communication performed by a user equipment (UE), comprising: It has been confirmed that Beam Fault Recovery (BFR) has been triggered; The BFR information associated with the BFR is determined within a time length, wherein the time length includes a duration after the beam fault is detected and spans at least one timing for BFR message transmission, and during the time length, if the BFR information has been sent, has not been changed, or has not yet become available, the UE skips the transmission of the BFR message; as well as After determining the BFR information, the BFR message including the BFR information is sent.

2. The method according to claim 1, wherein, The transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

3. The method according to claim 2, wherein, The BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

4. The method according to claim 1, wherein, The transmission of the BFR message, which includes the BFR information, is at least in part based on the determination that the BFR has been triggered and not canceled.

5. The method according to claim 1, wherein, The BFR is used for one or more secondary cells of the UE.

6. The method according to claim 1, wherein, The BFR information includes a candidate beam availability indication for one or more secondary cells, indicated in the bitmap of the BFR message.

7. The method according to claim 1, wherein, At least a portion of the BFR information includes a secondary cell index associated with the BFR.

8. The method according to claim 7, wherein, The secondary cell index is included in the bitmap of the BFR message.

9. The method according to claim 7, wherein, The BFR information is in the first eight-bit byte of the Media Access Control element of the BFR message.

10. The method of claim 7, further comprising: The determination of at least a portion of the BFR information that has been sent is based at least in part on the transmission of the BFR message and is based at least in part on the inclusion of the secondary cell index in the BFR message.

11. The method according to claim 1, wherein, The BFR information is defined as the secondary cell index associated with the BFR.

12. The method according to claim 11, wherein, The secondary cell index is included in the bitmap of the BFR message.

13. A user equipment (UE) for wireless communication, comprising: One or more memory units; as well as One or more processors coupled to the one or more memories, the one or more processors being configured to: It has been confirmed that Beam Fault Recovery (BFR) has been triggered; The BFR information associated with the BFR is determined within a time length, wherein the time length includes a duration after the beam fault is detected and spans at least one timing for BFR message transmission, and during the time length, if the BFR information has been sent, has not been changed, or has not yet become available, the UE skips the transmission of the BFR message; as well as After determining the BFR information, the BFR message including the BFR information is sent.

14. The UE according to claim 13, wherein, The transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

15. The UE according to claim 14, wherein, The BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

16. The UE according to claim 13, wherein, The transmission of the BFR message, which includes the BFR information, is at least in part based on the BFR being triggered and not canceled.

17. The UE according to claim 13, wherein, The BFR is used for one or more secondary cells of the UE.

18. The UE according to claim 13, wherein, The BFR information includes a candidate beam availability indication for one or more secondary cells, indicated in the bitmap of the BFR message.

19. The UE according to claim 13, wherein, At least a portion of the BFR information includes a secondary cell index associated with the BFR.

20. The UE according to claim 19, wherein, The secondary cell index is included in the bitmap of the BFR message.

21. The UE according to claim 19, wherein, The BFR information is provided in the first eight-bit byte of the Media Access Control (MAC) element of the BFR message.

22. The UE according to claim 19, wherein, The one or more processors are further configured to: determine, at least in part, the at least portion of the BFR information that has been sent, based at least in part on the BFR message and including the secondary cell index in the BFR message.

23. The UE according to claim 13, wherein, The BFR information is defined as the secondary cell index associated with the BFR.

24. The UE according to claim 23, wherein, The secondary cell index is included in the bitmap of the BFR message.

25. A non-transitory computer-readable medium storing one or more instructions for wireless communication, said one or more instructions comprising: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to perform the following operations: It has been confirmed that Beam Fault Recovery (BFR) has been triggered; Determine BFR information associated with the BFR within a time length, wherein the time length includes a duration after a beam fault is detected and spans at least one opportunity for BFR message transmission, and during the time length, if the BFR information has been sent, not yet changed, or not yet available, the UE skips the transmission of the BFR message; and After determining the BFR information, the BFR message including the BFR information is sent.

26. The non-transitory computer-readable medium according to claim 25, wherein, The transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

27. The non-transitory computer-readable medium according to claim 26, wherein, The BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

28. The non-transitory computer-readable medium according to claim 25, wherein, The transmission of the BFR message, which includes the BFR information, is at least in part based on the fact that the BFR has been triggered and has not been canceled.

29. The non-transitory computer-readable medium according to claim 25, wherein, The BFR has been triggered for one or more secondary cells of the UE.

30. The non-transitory computer-readable medium according to claim 25, wherein, The BFR information includes a candidate beam availability indication for one or more secondary cells, indicated in the bitmap of the BFR message.

31. An apparatus for wireless communication, comprising: The unit used to determine which beam fault recovery (BFR) has been triggered; A unit for determining BFR information associated with the BFR within a time length, wherein the time length includes a duration after a beam fault is detected and spans at least one opportunity for BFR message transmission, and during the time length, if the BFR information has been sent, not yet changed, or not yet available, the device skips the transmission of the BFR message. as well as A unit for sending a BFR message including the BFR information after determining the BFR information.

32. The apparatus according to claim 31, wherein, The transmission of the BFR message, including the BFR information, is at least partially based on the availability of uplink shared channel resources for new transmissions and the ability of the uplink shared channel resources to accommodate the BFR message and its subheading.

33. The apparatus according to claim 32, wherein, The BFR message includes a truncated BFR message at least in part based on the following: the uplink shared channel resources are capable of accommodating the truncated BFR message.

34. The apparatus according to claim 31, wherein, The transmission of the BFR message, which includes the BFR information, is at least in part based on the fact that the BFR has been triggered and has not been canceled.

35. The apparatus according to claim 31, wherein, The BFR is used for one or more auxiliary cells of the device.

36. The apparatus according to claim 31, wherein, The BFR information includes a candidate beam availability indication for one or more secondary cells, indicated in the bitmap of the BFR message.

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