Techniques for updating default beam and path loss reference signals in multi-component carrier communication links

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment may determine one or more of a default uplink beam or a default path loss reference signal (PL RS) for a first component carrier of a communication link; and apply one or more of the default uplink beam or the default PL RS to a second component carrier of the communication link based at least in part on the UE not receiving an indication of a spatial relationship to the second component carrier or an indication of the PL RS for the second component carrier. Many other aspects are also provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is the 371st national phase of PCT application No. PCT / CN2020 / 094508, entitled “TECHNIQUES FOR UPDATING DEFAULTBEAMS AND PATHLOSS REFERENCE SIGNALS IN A MULTI-COMPONENT CARRIER COMMUNICATION LINK”, filed on June 5, 2020, which is expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for updating default beam and path loss reference signals in a multi-component carrier communication link. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include several base stations (BS) that can support communications for multiple user equipment (UE). A user equipment (UE) may communicate with a base station (BS) via a downlink and an uplink. A downlink (or forward link) refers to a communication link from a BS to a UE, and an uplink (or reverse link) refers to a communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at a city, country, region, and even global level. New Radio (NR), which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR aims to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, better integrating with other open standards, and supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation, where the open standards use orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink (DL), and CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL). As the demand for mobile broadband access continues to grow, further improvements in LTE, NR, and other radio access technologies remain very useful. Summary of the invention

[0007] In some aspects, a wireless communication method performed by a user device may include: determining a default uplink beam or one or more of a default path loss reference signal (PL RS) for a first component carrier of a communication link; and applying the default uplink beam or one or more of the default PL RS to a second component carrier of the communication link based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship.

[0008] In some aspects, application of one or more of the default uplink beam or default PL RS to a second component carrier of the communication link is at least partially based on the second component carrier being indicated within an uplink component carrier list, the uplink component carrier list indicating application of one or more of the default uplink beam or PL RS to the second component carrier of the communication link.

[0009] In some aspects, determining one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link includes one or more of the following: determining the default uplink beam or one or more of the default PL RS for the first component carrier of the communication link based at least in part on a first reference signal associated with a control resource set (CORESET) with a lowest CORESET ID, or determining the default uplink beam or one or more of the default PL RS for the first component carrier of the communication link based at least in part on a second reference signal associated with an active PDSCH.

[0010] In some aspects, the first reference signal comprises a first transmission configuration indicator (TCI) of a CORESET with a lowest CORESET ID or a QCL Type D reference signal of a quasi co-located (QCL), or the second reference signal comprises a second TCI or a QCL Type D reference signal of a QCL with an active PDSCH TCI ID.

[0011] In some aspects, the method includes receiving a first update to a first TCI or QCL for a CORESET having a lowest CORESET ID for multiple component carriers in a downlink component carrier list, or receiving a second update to a second TCI or QCL having an active PDSCH TCI ID for multiple component carriers in a downlink component carrier list.

[0012] In some aspects, the receiving of the first update includes receiving the first update via a first medium access control element (MAC CE), or the receiving of the second update includes receiving the second update via a second MAC CE.

[0013] In some aspects, the method includes determining one or more of updated uplink beams or updated PL RSs for multiple component carriers in an uplink component carrier list based at least in part on an updated TCI or QCL for a single component carrier among multiple component carriers in a downlink component carrier list.

[0014] In some aspects, a single component carrier among the multiple component carriers in the downlink component carrier list includes: a component carrier having a lowest component carrier (CC) ID among the component carriers in both the downlink component carrier list and the uplink component carrier list, a component carrier having a highest CC ID among the component carriers in both the downlink component carrier list and the uplink component carrier list, or a designated component carrier among the component carriers in both the downlink component carrier list and the uplink component carrier list.

[0015] In some aspects, the method includes receiving an indication of the single component carrier via radio resource control (RRC) signaling, one or more MAC CEs, or downlink control information (DCI).

[0016] In some aspects, the method includes receiving, via a MAC CE, an indication of a default uplink beam or a default PL RS for a first component carrier, wherein the default uplink beam or the default PL RS is associated with a sounding reference signal (SRS) resource; and sending one or more SRSs based at least in part on applying the default uplink beam or the default PL RS to multiple component carriers including a second component carrier.

[0017] In some aspects, the communication link includes a multi-TRP communication link having a multi-DCI configuration or a single DCI configuration, and the application of one or more of the default uplink beam or the default PL RS to the second component carrier is at least partially based on the first component carrier and the second component carrier being associated with the same TRP.

[0018] In some aspects, the determination of one or more of a default uplink beam or a default PL RS for a first component carrier of the communication link comprises one or more of: determining the one or more of the default uplink beam or the default PL RS for the first component carrier of the communication link based at least in part on a first TCI or a first QCL TypeD reference signal of a QCL of a CORESET with a lowest CORESET ID of the component carrier associated with the same TRP. Determining the one or more of the default uplink beam or the default PL RS for the first component carrier of the communication link based at least in part on a second TCI or a second QCL TypeD reference signal of a QCL of an active PDSCH TCI ID associated with the same TRP.

[0019] In some aspects, the communication link includes a single DCI configuration, and determining one or more of a default uplink beam or a default PL RS for a first component carrier includes determining the default uplink beam or one or more of the default PL RS for the first component carrier based at least in part on a QCL TypeD reference signal of a single TCI state among multiple TCI states mapped to the same TCI code point.

[0020] In some aspects, TCI code points of a single TCI state are mapped to multiple TCI states and include the lowest TCI code point ID among the TCI code points mapped to multiple TCI states, the highest TCI code point among the TCI code points mapped to multiple TCI states, and a specified TCI code point among the TCI code points mapped to multiple TCI states.

[0021] In some aspects, the method includes: for the same TRP, determining one or more of updated uplink beams or updated PL RSs for multiple component carriers associated with the same TRP in an uplink component list, and determining that the multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the TCI code point.

[0022] In some aspects, the method includes determining a default downlink beam for each TRP based at least in part on a TCI or QCL of a CORESET with a lowest CORESET ID in the same TRP in a most recently monitored timeslot, wherein the communication link includes a multiple DCI configuration.

[0023] In some aspects, the method includes determining a default downlink beam for each TRP based at least in part on a single TCI state among multiple TCI states mapped to the same TCI code point, the same code point having a lowest TCI code point ID among the TCI code points mapped to the multiple TCI states.

[0024] In some aspects, the method includes: for the same TRP, determining one or more of updated uplink beams or updated PL RSs for multiple component carriers associated with the same TRP in a downlink component list, and determining that the multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the code point.

[0025] In some aspects, a user equipment for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to determine one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link; and apply one or more of the default uplink beam or the default PL RS to a second component carrier of the communication link based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship.

[0026] In some aspects, application of one or more of the default uplink beam or default PL RS to a second component carrier of the communication link is at least partially based on the second component carrier being indicated within an uplink component carrier list, the uplink component carrier list indicating application of one or more of the default uplink beam or PL RS to the second component carrier of the communication link.

[0027] In some aspects, determining one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link includes one or more of: determining the default uplink beam or one or more of the default PL RS for the first component carrier of the communication link based at least in part on a first reference signal associated with a CORESET having a lowest CORESET ID, or determining the default uplink beam or one or more of the default PL RS for the first component carrier of the communication link based at least in part on a second reference signal associated with an active PDSCH TCI ID.

[0028] In some aspects, the first reference signal comprises a QCL Type D reference signal for a first TCI or QCL of a CORESET having a lowest CORESET ID, and the second reference signal comprises a QCL Type D reference signal for a second TCI or QCL having an active PDSCH TCI ID.

[0029] In some aspects, the one or more processors are further configured to receive, for multiple component carriers in the downlink component carrier list, a first update to a first TCI or QCL for a CORESET having a lowest CORESET ID, or to receive, for multiple component carriers in the downlink component carrier list, a second update to a second TCI or QCL having an active PDSCH TCI ID.

[0030] In some aspects, the reception of the first update comprises reception of the first update via a first MAC CE, or the reception of the second update comprises reception of the second update via a second MAC CE.

[0031] In some aspects, the one or more processors are further configured to determine one or more of updated uplink beams or updated PL RSs for multiple component carriers in an uplink component carrier list based at least in part on an updated TCI or QCL for a single component carrier among the multiple component carriers in the downlink component carrier list.

[0032] In some aspects, a single component carrier among the multiple component carriers in the downlink component carrier list includes: a component carrier having a lowest CORESETID among the component carriers in both the downlink component carrier list and the uplink component carrier list, or a component carrier having a highest CORESET ID among the component carriers in both the downlink component carrier list and the uplink component carrier list, or a designated component among the component carriers in both the downlink component carrier list and the uplink component carrier list.

[0033] In some aspects, the one or more processors are further configured to receive an indication of the single component carrier via RRC signaling, one or more MAC CEs, or DCI.

[0034] In some aspects, the one or more processors are also configured to: receive an indication of a default uplink beam or a default PL RS for a first component carrier via a MAC CE, wherein the default uplink beam or the default PL RS is associated with an SRS resource; and send one or more SRSs based at least in part on applying the default uplink beam or the default PL RS to multiple component carriers including a second component carrier.

[0035] In some aspects, the communication link includes a multi-TRP communication link having a multi-DCI configuration or a single DCI configuration, and the application of one or more of the default uplink beam or the default PL RS to the second component carrier is at least partially based on the first component carrier and the second component carrier being associated with the same TRP.

[0036] In some aspects, the determination of one or more of a default uplink beam or a default PL RS for a first component carrier of the communication link comprises one or more of: determining one or more of a default uplink beam or a default PL RS for the first component carrier of the communication link based at least in part on a first TCI or a first QCL TypeD reference signal of a QCL of a CORESET with a lowest CORESET ID of the component carrier associated with the same TRP. Determining one or more of a default uplink beam or a default PL RS for the first component carrier of the communication link based at least in part on a second TCI or a second QCL TypeD reference signal of a QCL of an active PDSCH TCI ID associated with the same TRP.

[0037] In some aspects, the communication link includes a single DCI configuration, and determining one or more of a default uplink beam or a default PL RS for a first component carrier includes determining the default uplink beam or one or more of the default PL RS for the first component carrier based at least in part on a QCL TypeD reference signal of a single TCI state among multiple TCI states mapped to the same TCI code point.

[0038] In some aspects, TCI code points of a single TCI state are mapped to multiple TCI states and include the lowest TCI code point ID among the TCI code points mapped to multiple TCI states, the highest TCI code point among the TCI code points mapped to multiple TCI states, and a specified TCI code point among the TCI code points mapped to multiple TCI states.

[0039] In some aspects, one or more processors are further configured to: determine, for the same TRP, one or more of updated uplink beams or updated PL RSs for multiple component carriers associated with the same TRP in an uplink component list, and determine that multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the code points.

[0040] In some aspects, the one or more processors are also configured to determine a default downlink beam for each TRP based at least in part on the TCI or QCL of the CORESET with the lowest CORESET ID in the same TRP in a most recently monitored timeslot, wherein the communication link includes a multiple DCI configuration.

[0041] In some aspects, one or more processors are also configured to determine a default downlink beam for each TRP based at least in part on a single TCI state among multiple TCI states mapped to the same TCI code point, the same code point having a lowest TCI code point ID among the TCI code points mapped to the multiple TCI states.

[0042] In some aspects, one or more processors are further configured to: determine, for the same TRP, one or more of updated uplink beams or updated PL RSs for multiple component carriers associated with the same TRP in a downlink component list, and determine that multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the code points.

[0043] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to determine one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link; and apply one or more of the default uplink beam or the default PL RS to a second component carrier of the communication link based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship.

[0044] In some aspects, application of one or more of the default uplink beam or default PL RS to a second component carrier of the communication link is at least partially based on the second component carrier being indicated within an uplink component carrier list, the uplink component carrier list indicating application of one or more of the default uplink beam or PL RS to the second component carrier of the communication link.

[0045] In some aspects, determining one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link includes one or more of: determining the default uplink beam or one or more of the default PL RS for the first component carrier of the communication link based at least in part on a first reference signal associated with a CORESET having a lowest CORESET ID, or determining the default uplink beam or one or more of the default PL RS for the first component carrier of the communication link based at least in part on a second reference signal associated with an active PDSCH TCI ID.

[0046] In some aspects, the first reference signal comprises a QCL Type D reference signal for a first TCI or QCL of a CORESET having a lowest CORESET ID, and the second reference signal comprises a QCL Type D reference signal for a second TCI or QCL having an active PDSCH TCI ID.

[0047] In some aspects, when executed by one or more processors, the one or more instructions further cause the one or more processors to receive, for multiple component carriers in the downlink component carrier list, a first update to a first TCI or QCL for a CORESET having a lowest CORESET ID, or to receive, for multiple component carriers in the downlink component carrier list, a second update to a second TCI or QCL having an active PDSCH TCI ID.

[0048] In some aspects, the reception of the first update comprises reception of the first update via a first MAC CE, or the reception of the second update comprises reception of the second update via a second MAC CE.

[0049] In some aspects, when executed by one or more processors, the one or more instructions further cause the one or more processors to determine one or more of updated uplink beams or updated PL RSs for multiple component carriers in an uplink component carrier list based at least in part on an updated TCI or QCL for a single component carrier among multiple component carriers in a downlink component carrier list.

[0050] In some aspects, a single component carrier among the multiple component carriers in the downlink component carrier list includes: a component carrier having a lowest CORESETID among the component carriers in both the downlink component carrier list and the uplink component carrier list, or a component carrier having a highest CORESET ID among the component carriers in both the downlink component carrier list and the uplink component carrier list, or a designated component among the component carriers in both the downlink component carrier list and the uplink component carrier list.

[0051] In some aspects, when executed by the one or more processors, the one or more instructions further cause the one or more processors to receive an indication of the single component carrier via RRC signaling, one or more MAC CEs, or DCI.

[0052] In some aspects, when executed by one or more processors, the one or more instructions also cause the one or more processors to receive, via a MAC CE, an indication of a default uplink beam or a default PL RS for a first component carrier, wherein the default uplink beam or the default PL RS is associated with an SRS resource; and to send one or more SRSs based at least in part on applying the default uplink beam or the default PL RS to multiple component carriers including a second component carrier.

[0053] In some aspects, the communication link includes a multi-TRP communication link having a multi-DCI configuration or a single DCI configuration, and the application of one or more of the default uplink beam or the default PL RS to the second component carrier is at least partially based on the first component carrier and the second component carrier being associated with the same TRP.

[0054] In some aspects, the determination of one or more of a default uplink beam or a default PL RS for a first component carrier of the communication link comprises one or more of: determining one or more of a default uplink beam or a default PL RS for the first component carrier of the communication link based at least in part on a first TCI or a first QCL TypeD reference signal of a QCL of a CORESET with a lowest CORESET ID of the component carrier associated with the same TRP. Determining one or more of a default uplink beam or a default PL RS for the first component carrier of the communication link based at least in part on a second TCI or a second QCL TypeD reference signal of a QCL of an active PDSCH TCI ID associated with the same TRP.

[0055] In some aspects, the communication link includes a single DCI configuration, and determining one or more of a default uplink beam or a default PL RS for a first component carrier includes determining the default uplink beam or one or more of the default PL RS for the first component carrier based at least in part on a QCL TypeD reference signal of a single TCI state among multiple TCI states mapped to the same TCI code point.

[0056] In some aspects, TCI code points of a single TCI state are mapped to multiple TCI states and include the lowest TCI code point ID among the TCI code points mapped to multiple TCI states, the highest TCI code point among the TCI code points mapped to multiple TCI states, and a specified TCI code point among the TCI code points mapped to multiple TCI states.

[0057] In some aspects, one or more processors are further configured to: determine, for the same TRP, one or more of updated uplink beams or updated PL RSs for multiple component carriers associated with the same TRP in an uplink component list, and determine that multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the TCI code point.

[0058] In some aspects, when executed by one or more processors, the one or more instructions further cause the one or more processors to determine a default downlink beam for each TRP based at least in part on the TCI or QCL of the CORESET with the lowest CORESET ID in the same TRP in a most recently monitored timeslot, wherein the communication link includes a multi-DCI configuration.

[0059] In some aspects, when executed by one or more processors, the one or more instructions further cause the one or more processors to determine a default downlink beam for each TRP based at least in part on a single TCI state among multiple TCI states mapped to the same TCI code point, the same code point having a lowest TCI code point ID among the TCI code points mapped to the multiple TCI states.

[0060] In some aspects, when executed by one or more processors, the one or more instructions further cause the one or more processors to determine, for the same TRP, one or more of updated uplink beams or updated PL RSs for multiple component carriers associated with the same TRP in a downlink component list, and determine that the multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the code points.

[0061] In some aspects, an apparatus for wireless communication may include: components for determining a default uplink beam or one or more of a default PL RS for a first component carrier of a communication link; and components for applying the default uplink beam or one or more of the default PL RS to a second component carrier of the communication link based at least in part on the second component carrier not having a currently indicated PL RS or a spatial relationship.

[0062] In some aspects, application of one or more of the default uplink beam or default PL RS to a second component carrier of the communication link is at least partially based on the second component carrier being indicated within an uplink component carrier list, the uplink component carrier list indicating application of one or more of the default uplink beam or PL RS to the second component carrier of the communication link.

[0063] In some aspects, determining one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link includes one or more of: determining the default uplink beam or one or more of the default PL RS for the first component carrier of the communication link based at least in part on a first reference signal associated with a CORESET having a lowest CORESET ID, or determining the default uplink beam or one or more of the default PL RS for the first component carrier of the communication link based at least in part on a second reference signal associated with an active PDSCH TCI ID.

[0064] In some aspects, the first reference signal comprises a QCL Type D reference signal for a first TCI or QCL of a CORESET having a lowest CORESET ID, and the second reference signal comprises a QCL Type D reference signal for a second TCI or QCL having an active PDSCH TCI ID.

[0065] In some aspects, the apparatus includes means for receiving, for multiple component carriers in a downlink component carrier list, a first update to a first TCI or QCL for a CORESET having a lowest CORESET ID, or for multiple component carriers in a downlink component carrier list, receiving a second update to a second TCI or QCL having an active PDSCH TCI ID.

[0066] In some aspects, the receiving of the first update includes receiving the first update via a first MAC CE, or the receiving of the second update includes receiving the second update via a second MAC CE.

[0067] In some aspects, the apparatus includes means for determining one or more of updated uplink beams or updated PL RSs for multiple component carriers in an uplink component carrier list based at least in part on an updated TCI or QCL for a single component carrier among the multiple component carriers in the downlink component carrier list.

[0068] In some aspects, a single component carrier among the multiple component carriers in the downlink component carrier list includes: a component carrier having a lowest CORESETID among the component carriers in both the downlink component carrier list and the uplink component carrier list, or a component carrier having a highest CORESET ID among the component carriers in both the downlink component carrier list and the uplink component carrier list, or a designated component among the component carriers in both the downlink component carrier list and the uplink component carrier list.

[0069] In some aspects, the apparatus includes means for receiving an indication of a single component carrier via RRC signaling, one or more MAC CEs, or DCI.

[0070] In some aspects, the apparatus includes components for: receiving, via a MAC CE, an indication of a default uplink beam or a default PL RS for a first component carrier, wherein the default uplink beam or the default PL RS is associated with an SRS resource; and sending one or more SRSs based at least in part on applying the default uplink beam or the default PL RS to multiple component carriers including a second component carrier.

[0071] In some aspects, the communication link includes a multi-TRP communication link having a multi-DCI configuration or a single DCI configuration, and the application of one or more of the default uplink beam or the default PL RS to the second component carrier is at least partially based on the first component carrier and the second component carrier being associated with the same TRP.

[0072] In some aspects, the determination of one or more of a default uplink beam or a default PL RS for a first component carrier of the communication link comprises one or more of: determining the one or more of the default uplink beam or the default PL RS for the first component carrier of the communication link based at least in part on a first TCI or a first QCL TypeD reference signal of a QCL of a CORESET with a lowest CORESET ID of the component carrier associated with the same TRP. Determining the one or more of the default uplink beam or the default PL RS for the first component carrier of the communication link based at least in part on a second TCI or a second QCL TypeD reference signal of a QCL of an active PDSCH TCI ID associated with the same TRP.

[0073] In some aspects, the communication link includes a single DCI configuration, and determining one or more of a default uplink beam or a default PL RS for a first component carrier includes determining the default uplink beam or one or more of the default PL RS for the first component carrier based at least in part on a QCL TypeD reference signal of a single TCI state among multiple TCI states mapped to the same TCI code point.

[0074] In some aspects, a TCI code point of a single TCI state is mapped to multiple TCI states and includes a lowest TCI code point ID among the TCI code points mapped to multiple TCI states, a highest TCI code point ID among the TCI code points mapped to multiple TCI states, and a specified TCI code point among the TCI code points mapped to multiple TCI states.

[0075] In some aspects, the apparatus includes components for determining, for the same TRP, one or more of updated uplink beams or updated PL RSs for multiple component carriers in an uplink component list that are associated with the same TRP, and determining that the multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the code points.

[0076] In some aspects, the apparatus includes components for determining a default downlink beam for each TRP based at least in part on a TCI or QCL having a lowest CORESET ID in the same TRP in a most recently monitored timeslot, wherein the communication link includes a multiple DCI configuration.

[0077] In some aspects, the apparatus includes components for determining a default downlink beam for each TRP based at least in part on a single TCI state among multiple TCI states mapped to the same TCI code point, the same code point having a lowest TCI code point ID among the TCI code points mapped to the multiple TCI states.

[0078] In some aspects, the apparatus includes components for determining, for the same TRP, one or more of updated uplink beams or updated PL RSs for multiple component carriers associated with the same TRP in a downlink component list, and determining that the multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the code points.

[0079] Aspects generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as substantially described herein with reference to and illustrated by the figures and description.

[0080] The features and technical advantages of the examples according to the present disclosure have been outlined quite broadly above so that the following detailed description may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, their organization and methods of operation, and associated advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each of the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0081] In order to be able to understand the above features of the present disclosure in detail, the above brief overview may be described in more detail with reference to various aspects, some of which are shown in the accompanying drawings. However, it should be noted that the accompanying drawings only show certain typical aspects of the present disclosure and therefore should not be considered as limiting the scope thereof, as the description may admit other equally effective aspects. The same reference numerals in different drawings may represent the same or similar elements.

[0082] Figure 1 is a diagram illustrating an example of a wireless network in accordance with aspects of the present disclosure.

[0083] Figure 2 is a diagram illustrating an example of a base station communicating with a UE in a wireless network according to aspects of the present disclosure.

[0084] Figure 3 is a diagram illustrating an example of scheduling an uplink signal or a downlink signal using downlink control information in a control resource set according to aspects of the present disclosure.

[0085] Figures 4 to 7 is a diagram illustrating an example associated with updating a default beam and a path loss reference signal in a multi-component carrier communication link according to aspects of the present disclosure.

[0086] Figure 8 is a diagram illustrating example processes associated with updating default beams and path loss reference signals in a multi-component carrier communication link in accordance with various aspects of the present disclosure.

[0087] Fig. 9 is a block diagram of an example apparatus for wireless communications in accordance with aspects of the present disclosure. DETAILED DESCRIPTION

[0088] The various aspects of the present disclosure will be described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. Based on the guidance of this article, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, and may be implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method, which uses other structures, functions, or structures and functions in addition to or different from the various aspects of the present disclosure set forth herein to practice. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0089] Several aspects of telecommunication systems will now be described with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and design constraints on the overall system.

[0090] It should be noted that although terms generally associated with 5G or NR radio access technology (RAT) may be used herein to describe various aspects, various aspects of the present disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or RAT after 5G (e.g., 6G).

[0091] Figure 1 is a diagram showing an example of a wireless network 100 according to various aspects of the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network, an LTE network, etc. The wireless network 100 may include several 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 may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0092] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to UEs subscribed to services. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs subscribed to services. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1In the example shown, BS 110a may be a macro BS of macro cell 102a, BS 110b may be a pico BS of pico cell 102b, and BS 110c may be a femto BS of femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NB", and "cell" may be used interchangeably herein.

[0093] In some aspects, the cells are not necessarily stationary, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 using any suitable transport network, through various types of backhaul interfaces, such as direct physical connections, virtual networks, etc.

[0094] 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 send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown, a relay base station 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0095] The wireless network 100 may be a heterogeneous network including different types of BSs, such as a macro BS, a pico BS, a femto BS, a relay BS, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0096] A network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0097] UE 120 (e.g., 120a, 120b, 120c) can be dispersed in the wireless network 100, and each UE can be fixed or mobile. UE can also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biosensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0098] Some UEs may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. For example, MTC UEs and eMTC UEs include robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node may provide a connection to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as customer premise equipment (CPE). UE 120 may be included in a housing that houses components of UE 120 (e.g., processor components, memory components, etc.). In some aspects, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, electrically coupled, etc.

[0099] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0100] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary for communicating with each other) using one or more sidelink channels. 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, etc.), mesh networks, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations performed by base station 110 as described elsewhere herein.

[0101] The devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various categories, frequency bands, channels, etc. based on frequency or wavelength. For example, the devices of the wireless network 100 can communicate using an operating frequency band having a first frequency range (FR1) from 410 MHz to 7.125 GHz, and / or can communicate using an operating frequency band having a second frequency range (FR2) from 24.25 GHz to 52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a "sub-6 GHz" band. Similarly, FR2 is also often referred to as a "millimeter wave" band, although it is different from the extremely high frequency (EHF) band (30 GHz to 300 GHz) determined by the International Telecommunication Union (ITU) as a "millimeter wave" band. Therefore, unless otherwise stated, it should be understood that the term "sub-6 GHz" and the like (if used herein) can broadly represent frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise stated, it should be understood that the term "millimeter wave" and the like, if used herein, can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0102] As mentioned above, Figure 1 Other examples may be provided as examples. Figure 1 Described differently.

[0103] Figure 2 is a diagram illustrating an example 200 of a base station 110 communicating with a UE 120 in a wireless network 100 in accordance with aspects of the present disclosure. The base station 110 may be equipped with T antennas 234a through 234t, and the UE 120 may be equipped with R antennas 252a through 252r, where, in general, T≥1 and R≥1.

[0104] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.) and provide overhead symbols and control symbols. The transmit processor 220 may 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 signals (PSS) and secondary synchronization signals (SSS)). If applicable, a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, and may provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may also process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a to 232t may be transmitted via antennas 234a to 234t, respectively.

[0105] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations, and may provide received signals to demodulators (DEMOD) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. Receive processor 258 may 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" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of the UE 120 may be included in the housing 284.

[0106] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. For example, the network controller 130 may include one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0107] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., including reports of RSRP, RSSI, RSRQ, CQI, etc.) from a controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. If applicable, the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, and / or TX MIMO processors 266. A processor (e.g., controller / processor 280) and memory 282 may use the transceiver to perform aspects of any of the methods described herein.

[0108] At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 if applicable, and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 for scheduling the UE 120 for downlink and / or uplink communications. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of the antenna 234, the modulator and / or demodulator 232, the MIMO detector 236, the receive processor 238, the transmit processor 220, and / or the TX MIMO processor 230. A processor (eg, controller / processor 240 ) and memory 242 may use a transceiver to perform aspects of any of the methods described herein.

[0109] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other components of the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or the like may perform one or more techniques associated with updating the default beam and path loss reference signals in the multi-component carrier communication link, as described in more detail elsewhere herein. Figure 2 Any other component of the can perform or direct e.g. Figure 8 800 and / or other processes described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, when one or more instructions are executed by one or more processors of base station 110 and / or UE 120 (e.g., directly executed, or executed after compilation, conversion, interpretation, etc.), one or more processors, UE 120, and / or base station 110 may be caused to perform or direct, for example, Figure 8 The operations of process 800 and / or other processes described herein. In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, interpreting instructions, etc.

[0110] In some aspects, the UE 120 may include: a component for determining one or more of a default uplink beam or a default PL RS for a first component carrier of the communication link; a component for applying one or more of the default uplink beam or the default PL RS to a second component carrier of the communication link based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship, etc. In some aspects, these components may include combining Figure 2 One or more components of UE 120 are depicted, 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.

[0111] As mentioned above, Figure 2 Other examples may be provided as examples. Figure 2 Described differently.

[0112] Figure 3 is a diagram illustrating an example of scheduling uplink or downlink signals using downlink control information in a control resource set according to various aspects of the present disclosure. In some aspects, a UE may receive resource grants for uplink (e.g., physical uplink shared channel (PUSCH)) communications, downlink (e.g., physical downlink shared channel (PDSCH)) communications, etc., to communicate with a base station. In some aspects, a base station, a TRP, etc. may send resource grants as downlink control information (DCI) within one or more control resource sets (CORESETs) to a UE.

[0113] As shown at reference numeral 305, the UE may receive a single DCI message in a single CORESET that schedules a single communication via PDSCH or PUSCH. As shown at reference numeral 310, the UE may receive multiple DCI messages in multiple CORESETs that schedule multiple communications via PDSCH or PUSCH.

[0114] As indicated by reference numeral 315, the UE may receive a single DCI message in a single CORESET that schedules multiple communications via a PDSCH or PUSCH. In some aspects, an indication of a single DCI may be associated with a TCI code point that maps to a single TCI state or multiple TCI states. For example, TCI code point 0 may map to TCI A0, TCI code point 1 may map to TCI B1, and TCI code point 2 may map to both TCI C0 and TCI C1 (e.g., when a single DCI message schedules multiple communications).

[0115] As mentioned above, Figure 3Other examples may be provided as examples. Figure 3 Described differently.

[0116] The UE may need to determine beams and / or transmit power control parameters for sending SRS, PUSCH communications, physical uplink control channel (PUCCH) communications, etc. The UE may receive information for determining beams and / or transmit power control parameters for one or more component carriers for communicating with a base station.

[0117] The UE may be configured to individually determine the default uplink beam and / or default PL RS for each SRS, PUSCH and / or PUCCH communication, and / or receive an explicit indication of the component carrier to which the indicated spatial relationship applies. This may require unnecessary overhead, thereby consuming computational, communication and / or network resources received and / or applied by the UE.

[0118] In some aspects described herein, a UE may determine a default uplink beam and / or a default PL RS for a component carrier and apply the default uplink beam and / or the default PL RS to multiple component carriers (e.g., one component carrier and at least one additional component carrier) in an uplink component carrier list. In some aspects, a UE may determine a default uplink beam and / or a default PL RS based at least in part on a reference signal (e.g., a QCL-Type D reference signal) of a TCI and / or a QCL of a CORESET with a lowest CORESET ID or (if there is no configured CORESET) with an active PDSCH TCI ID.

[0119] In some aspects, the TCI and / or QCL of the CORESET with the lowest CORESET ID or with the active PDSCH TCI ID may be updated simultaneously by one MAC CE for multiple component carriers in the downlink component carrier list. In some aspects, simultaneous physical downlink control channel (PDCCH) and / or PDSCH beam updates may not be allowed on multiple component carriers. In some aspects where simultaneous beam updates across multiple component carriers are allowed, the UE may determine the updated default uplink beam and / or PL RS for multiple component carriers in the uplink component carrier list based at least in part on the QCL-TypeD reference signal of the updated TCI and / or QCL of the CORESET with the lowest CORESET ID or with the active PDSCH TCI ID of one component carrier. One component carrier may have the highest component carrier ID, the lowest component carrier ID, a special (e.g., associated with an indication) component carrier ID among the component carriers belonging to both the downlink component carrier list and the uplink component carrier list, or a component carrier ID explicitly indicated via RRC signaling, MAC CE, DCI, etc.

[0120] In this way, the UE can determine a default beam and / or PL RS to apply to multiple component carriers, thereby saving computational, communication, and / or network resources that might otherwise have been used to receive additional signaling from the base station, individually determine the default beam and / or PL RS for each component carrier, and so on.

[0121] Figures 4 to 7 are diagrams illustrating examples 400 , 500 , 600 , and 700 associated with updating a default beam and a PL RS in a multi-component carrier communication link according to various aspects of the present disclosure.

[0122] like Figure 4 As shown, a UE (e.g., UE 120) may communicate (e.g., send uplink transmissions and / or receive downlink transmissions) with a base station (e.g., base station 110). The UE and base station may be part of a wireless network (e.g., wireless network 100).

[0123] As indicated by reference numeral 405, the base station may send configuration information, and the UE may receive the configuration information. In some aspects, the UE may receive the configuration information from another device (e.g., from another base station, another UE, etc.). In some aspects, the UE may receive the configuration information via one or more of RRC signaling, medium access control (MAC) signaling (e.g., MAC CE), etc. In some aspects, the configuration information may include an indication of one or more configuration parameters (e.g., known to the UE) for selection by the UE, explicit configuration information for the UE to use to configure the UE, etc.

[0124] In some aspects, the configuration information may indicate that the UE is to determine a default beam and / or a default PL RS for multiple component carriers in a multi-component carrier communication link. For example, the configuration information may indicate that the UE is to be configured to determine a default beam and / or a default PL RS for a first component carrier and apply the default beam and / or the default PL RS to multiple component carriers. In some aspects, the configuration information may indicate that the UE is to apply the default beam and / or the default PL RS to a second component carrier associated with a TRP and / or one or more additional component carriers that are also associated with the first component carrier.

[0125] As indicated by reference numeral 410, the UE may configure the UE to communicate with the base station. In some aspects, the UE may configure the UE based at least in part on the configuration information. In some aspects, the UE may be configured to perform one or more operations described herein.

[0126] As indicated by reference numeral 415, the UE may send, and the base station may receive, an indication of the UE's ability to determine a default beam and / or a default PL RS and apply the default beam and / or the default PL RS to a second beam without receiving an explicit indication of the beam and / or the PL RS of the second beam. In some aspects, the UE may send the indication via RRC signaling, one or more MAC CEs, a physical uplink control channel (PUCCH) message, etc.

[0127] As indicated by reference numeral 420, the UE may receive information associated with determining a default beam and / or a default PLRS for a first component carrier. In some aspects, the information may include a first reference signal associated with a lowest control resource set (CORESET) identification (ID), a second reference signal associated with an active PDSCH, etc. In some aspects, the first reference signal may include a QCL Type D reference signal of a first TCI or QCL of a CORESET having a lowest CORESET ID, and the second reference signal may include a QCL Type D reference signal of a second TCI or QCL having an active PDSCH TCI ID.

[0128] As indicated by reference numeral 425, the UE may determine a default beam and / or a default PL RS for the first component carrier. In some aspects, as described with reference numeral 420, the UE may determine a default beam and / or a default PL RS based at least in part on information received from a base station.

[0129] In some aspects, if the UE is configured to determine a default beam and / or default PL RS for SRS (e.g., enableDefaultBeamPlForSRS is configured), and if a component carrier (e.g., a serving cell) is included in an applicable list of component carriers indicated by a higher layer parameter (e.g., simultaneousSpatial-UpdatedList-r16 or simultaneousSpatial-UpdatedListSecond-r16), then when the spatial domain transmission filter is activated and / or updated for one or more semi-persistent or non-periodic SRS resources indicated by the higher layer parameter (e.g., SRS-Resource) and / or by the MAC CE of the component carrier (e.g., the serving cell), then for all bandwidth parts in the indicated component carrier, the spatial domain transmission filter may be applied to one or more semi-persistent or non-periodic SRS resources having the same SRS resource ID.

[0130] In some aspects, if the spatial domain transmission filters are activated and / or updated simultaneously for multiple serving cells in the applicable list of the component carrier indicated (e.g., by simultaneousSpatial-UpdatedList-r16 or simultaneousSpatial-UpdatedListSecond-r16), the spatial domain transmission filters updated on the component carrier with the lowest ID among the multiple serving cells (e.g., the serving cell) may be applied to all serving cells in the applicable list of the component carrier.

[0131] In some aspects, determining a default uplink beam and / or a default PL RS for a first component carrier comprises determining the default uplink beam and / or the default PL RS for the first component carrier of the communication link based at least in part on a first QCL TypeD reference signal of a first TCI or QCL of a CORESET with a lowest CORESET ID of the component carrier associated with the same TRP. In some aspects, determining the default uplink beam and / or the default PL RS for the first component carrier may comprise determining the default uplink beam and / or the default PL RS for the first component carrier of the communication link based at least in part on a second QCL TypeD reference signal of a second TCI or QCL with an active PDSCH TCI ID associated with the same TRP.

[0132] In some aspects, the communication link between the UE and the base station may include a single DCI configuration. In some aspects, determining the default uplink beam and / or default PL RS of the first component carrier may include determining the default uplink beam and / or default PL RS of the first component carrier based at least in part on a QCL TypeD reference signal of a single TCI state in multiple TCI states mapped to the same TCI code point. In some aspects, a single TCI state may be mapped to multiple TCI states. A single TCI state may include the lowest TCI code point ID among the TCI code points mapped to multiple TCI states, the highest TCI code point ID among the TCI code points mapped to multiple TCI states, a specified TCI code point ID among the TCI code points mapped to multiple TCI states, and the like.

[0133] In some aspects, the UE may communicate using a multi-TRP (mTRP) configuration. The UE may determine a default uplink beam and / or a default PL RS for each TRP associated with the mTRP configuration. In some aspects, the UE may communicate using an mTRP configuration and a multi-DCI (mDCI) mTRP configuration or a single DCI (sDCI) mTRP configuration.

[0134] Based at least in part on the UE communicating with the base station using an mDCI mTRP configuration, the UE may determine a default uplink beam and / or a default PL RS based at least in part on a TCI and / or a QCL-TypeD reference signal of a CORESET with a lowest CORESET ID among the CORESET IDs associated with the TRP, or an active PDSCH TCI code point among the active PDSCH TCI code points associated with the TRP (e.g., if no CORESET is configured). In some aspects, based at least in part on a CORESET pool index (e.g., CORESETPoolIndex), the UE may identify a CORESET ID associated with the TRP.

[0135] Based at least in part on the UE communicating with the base station using the sDCI mTRP configuration, the UE may determine a default uplink beam and / or a default PL RS based at least in part on a QCL-TypeD reference signal of a TCI state in a plurality of TCI states mapped to a single TCI code point. Among the TCI code points mapped to a plurality of TCI states (e.g., two TCI states), the single TCI code point may have a highest TCI code point ID, a lowest TCI code point ID, or a special (e.g., associated with an indication) TCI code point ID.

[0136] In some aspects, the UE may communicate using an mTRP configuration and may determine a default downlink beam for each TRP. In some aspects, the UE may communicate using an mDCI mTRP configuration and may determine a default downlink beam for each TRP based at least in part on the TCI and / or QCL with the lowest CORESET ID among the CORESET IDs associated with the same TRP identified by the CORESET pool index. In some aspects, the UE may communicate using an sDCI mTRP configuration and may determine a default downlink beam for each TRP based at least in part on a TCI state among multiple TCI states mapped to the same TCI code point. In some aspects, a TCI state among the multiple TCI states may have the lowest TCI code point ID among the TCI code points mapped to the multiple TCI states.

[0137] As indicated by reference numeral 430, the UE may determine that one or more additional component carriers do not have a configured or indicated spatial relationship and / or PL RS. For example, the UE may determine that the DCI does not explicitly indicate beams (e.g., spatial relationship) and / or PL RS for the second component carrier.

[0138] As indicated by reference numeral 435, the UE may apply the default beam and / or the default PL RS to one or more additional component carriers (e.g., the second component carrier). In some aspects, the UE may apply the default beam and / or the default PL RS to one or more of the additional component carriers based at least in part on one or more of the additional component carriers indicated in an uplink component carrier list indicating that the one or more default uplink beams or PL RSs are applied to the one or more additional component carriers, based at least in part on a determination that the first component carrier and the one or more additional component carriers are associated with the same TRP, etc.

[0139] In some aspects, for SRS, PUCCH and / or PUSCH of a second component carrier without a spatial relationship (e.g., a configured and / or indicated spatial relationship) and / or PL RS (e.g., a configured and / or indicated PL RS), the UE may determine a default uplink beam and / or default PL RS for the first component carrier (e.g., based at least in part on a QCL-TypeD reference signal of a TCI and / or QCL with a lowest CORESETID), and apply the default uplink beam and / or default PL RS to the second component carrier. If there is no configured CORESET, the UE may determine the default uplink beam and / or default PL RS based at least in part on a QCL-TypeD reference signal of an active PDSCH TCI, and may apply the default uplink beam and / or default PL RS to the second component carrier.

[0140] As indicated by reference numeral 440, the UE may transmit via one or more additional component carriers. For example, the UE may transmit communications, such as SRS, PUCCH communications, and / or PUSCH communications, via one or more additional component carriers based at least in part on a default beam and / or a default PL RS. In some aspects, the UE may configure a spatial relationship and / or a spatial domain transmission filter for transmitting communications based at least in part on the default beam. In some aspects, the UE may configure one or more transmission power control parameters based at least in part on the default PL RS.

[0141] In this way, the UE can determine a single default beam and / or default PL RS to apply to multiple component carriers, thereby saving computational, communication, and / or network resources that might otherwise have been used to receive additional signaling from the base station, individually determine the default beam and / or default PL RS for each component carrier, and so on.

[0142] As mentioned above, Figure 4 Other examples may be provided as examples. Figure 4 Described differently.

[0143] If through Figure 5 As shown in the reference numeral 505 of , a UE (e.g., UE 120) may receive and a base station (e.g., base station 120) may send an update of TCI and / or QCL for a CORESET with a lowest CORESET ID or an active PDSCH TCI ID for multiple CCs in a downlink component carrier list. In some aspects, the UE may receive the update via a MAC CE.

[0144] As indicated by reference numeral 510, the UE may determine an updated TCI or and / or QCL for a single component carrier among the plurality of component carriers in the downlink component carrier list. As indicated by reference numeral 515, the UE may determine an updated default beam and / or an updated default PL RS for the plurality of component carriers in the uplink component carrier list based at least in part on the updated TCI and / or QCL for the single component carrier.

[0145] In some aspects, the TCI and / or QCL with the lowest CORESET ID or active PDSCH TCI ID may be updated simultaneously for multiple component carriers in the downlink component carrier list (e.g., via one MAC CE). In some aspects of these aspects, the UE may determine an updated default uplink beam and / or updated PL RS for multiple component carriers in the uplink component carrier list based at least in part on the updated TCI and / or updated QCL of the single component carrier with the lowest CORESET ID or active PDSCH TCI ID. In some aspects, among the component carriers identified in both the downlink component carrier list and the uplink component carrier list, the single component carrier may have the lowest component carrier ID, the highest component carrier ID, or a special component carrier ID (e.g., associated with an indication). In some aspects, the single component carrier may be explicitly indicated (e.g., via a component carrier ID) via RRC signaling, one or more MAC CEs, DCI, etc. In some aspects, simultaneous PDCCH and / or PDSCH beam updates for multiple component carriers may not be allowed.

[0146] In some aspects, the UE may communicate with the base station using an mTRP configuration and may receive simultaneous updates (e.g., via one MAC CE) to the TCI and / or QCL for the lowest CORESET ID or active PDSCH TCI ID in the uplink component carrier list. In some aspects, the UE may determine a default uplink beam and / or default PL RS for a first component carrier and apply the default uplink beam and / or default PL RS to component carriers associated with the same TRP in the uplink component carrier list. The UE may determine that the component carriers are associated with the same TRP based at least in part on a CORESET pool index (e.g., CORESETPoolIndex) and / or a TCI state order in a TCI code point associated with the component carrier. In some aspects, if the secondary TRP component carrier does not have a component carrier associated with the same TRP, the UE may ignore the default uplink beam and / or default PL RS for each TRP. In some aspects, the default uplink beam and / or default PL RS for each TRP determined for one component carrier may not be applied to other component carriers.

[0147] In some aspects, the UE may communicate using an mTRP configuration and may receive simultaneous updates to the TCI and / or QCL for the TRP with the lowest CORESET ID or active PDSCH TCI ID in a downlink component carrier list. In some aspects of these aspects, the UE may determine an updated default downlink beam for each TRP for a single component carrier and may apply the updated downlink beam to component carriers associated with the same TRP in the downlink component carrier list. In some aspects, the UE may identify component carriers associated with the same TRP based at least in part on a CORESET pool index (e.g., CORESETPoolIndex) or the same TCI state order in the TCI code point. In some aspects, the UE may ignore the default downlink beam for each TRP if the secondary TRP component carrier does not have a component carrier associated with the same TRP. In some aspects, the default downlink beam for each TRP determined for one component carrier may not be applied to other component carriers.

[0148] As indicated by reference numeral 520, the UE may transmit via at least one of the plurality of component carriers. For example, the UE may transmit communications, such as SRS, PUCCH communications, and / or PUSCH communications, via one or more additional component carriers based at least in part on the updated default beam and / or the updated default PL RS. In some aspects, the UE may configure a spatial relationship and / or a spatial domain transmission filter for transmitting communications based at least in part on the updated default beam. In some aspects, the UE may configure one or more transmission power control parameters based at least in part on the updated default PL RS.

[0149] In this way, the UE can determine to update a single default beam and / or default PL RS to apply to multiple component carriers, thereby saving computing, communication, and / or network resources that might otherwise have been used to receive additional signaling from the base station, individually determine the default beam and / or default PL RS for each component carrier, and so on.

[0150] As mentioned above, Figure 5 Other examples may be provided as examples. Figure 5 Described differently.

[0151] like Figure 6As shown, a UE (e.g., UE 120) may determine a default beam and / or a default PL RS for a first component carrier (e.g., CC1) and apply the default beam and / or the default PL RS to additional component carriers (e.g., CC0 and CC2). In some aspects, the UE may apply the default beam and / or the default PL RS to the additional component carrier based at least in part on the additional component carrier being identified in an uplink component carrier list (e.g., simultaneousSpatial-UpdatedList-r16) of a component carrier identifying the first component carrier. Additionally or alternatively, the UE may apply the default beam and / or the default PL RS to the additional component carrier based at least in part on the additional component carrier being identified in a downlink component carrier list (e.g., simultaneousDLTCI-UpdatedList-r16) identifying the first component carrier.

[0152] like Figure 7 As shown, a UE (e.g., UE 120) can communicate with multiple TRPs via one or more component carriers. As shown, a first SRS (SRS0) associated with a first TRP can be associated with a first CORESET (e.g., CORESET A), a second SRS (SRS1) associated with a second TRP can be associated with a second CORESET (e.g., CORESET B), and both the first SRS and the second SRS can be associated with a PDSCH. In some aspects, a first TCI code point can be mapped to determine a default uplink beam and / or a default PL RS for a first SRS based at least in part on the first CORESET, a second TCI code point can be mapped to determine a default uplink beam and / or a default PL RS for a second SRS based at least in part on the second CORESET, and a third TCI code point can be mapped to determine a default uplink beam and / or a default PL RS for a first SRS and a second SRS based at least in part on the PDSCH.

[0153] Figure 8 is a diagram illustrating an example process 800 performed by a UE, etc., according to aspects of the present disclosure. Example process 800 is an example of a UE (eg, UE 120, etc.) performing operations associated with updating a default beam and path loss reference signal in a multi-component carrier communication link.

[0154] like Figure 8As shown, in some aspects, process 800 may include determining one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link (block 810). For example, as described above, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may determine one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link.

[0155] like Figure 8 As further shown in FIG. 8 , in some aspects, process 800 may include applying one or more of a default uplink beam or a default PL RS to a second component carrier of the communication link based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship (block 820). For example, as described above, the UE (e.g., using transmit processor 264, controller / processor 280, memory 282, etc.) may apply one or more of a default uplink beam or a default PL RS to a second component carrier of the communication link based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship.

[0156] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below, and / or in conjunction with one or more other processes described elsewhere herein.

[0157] In a first aspect, application of one or more of a default uplink beam or a default PL RS to a second component carrier of a communication link is at least partially based on the second component carrier being indicated in an uplink component carrier list, the uplink component carrier list indicating application of one or more of the default uplink beam or PL RS to the second component carrier of the communication link.

[0158] In a second aspect, alone or in combination with the first aspect, determining one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link comprises one or more of: determining the default uplink beam or one or more of the default PL RS for a first component carrier of the communication link based at least in part on a first reference signal associated with a lowest CORESET ID, or determining the default uplink beam or one or more of the default PL RS for a first component carrier of the communication link based at least in part on a second reference signal associated with an active PDSCH.

[0159] In a third aspect, alone or in combination with one or more of the first and second aspects, the first reference signal comprises a QCL Type D reference signal of a first TCI or QCL of a CORESET with a lowest CORESET ID, or the second reference signal comprises a QCL Type D reference signal of a second TCI or QCL with an active PDSCH TCI ID.

[0160] In a fourth aspect, alone or in combination with one or more of the first to third aspects, process 800 includes receiving, for multiple component carriers in a downlink component carrier list, a first update of a first TCI or QCL of a CORESET having a lowest CORESET ID, or receiving, for multiple component carriers in a downlink component carrier list, a second update of a second TCI or QCL having an active PDSCH TCI ID.

[0161] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, receiving the first update includes receiving the first update via a first MAC CE, or receiving the second update includes receiving the second update via a second MAC CE.

[0162] In a sixth aspect, either alone or in combination with one or more of aspects 1 to 5, process 800 comprises determining one or more of updated uplink beams or updated PL RSs for multiple component carriers in an uplink component carrier list based at least in part on an updated TCI or QCL for a single component carrier among multiple component carriers in a downlink component carrier list.

[0163] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, a single component carrier among the multiple component carriers in the downlink component carrier list comprises: a component carrier with a lowest CORESET ID among the component carriers in both the downlink component carrier list and the uplink component carrier list, or a component carrier with a highest CORESET ID among the component carriers in both the downlink component carrier list and the uplink component carrier list, or a designated component among the component carriers in both the downlink component carrier list and the uplink component carrier list.

[0164] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 800 includes receiving an indication of a single component carrier via RRC signaling, one or more MAC CEs, or DCI.

[0165] In a ninth aspect, alone or in combination with one or more of aspects 1 to 8, process 800 includes: receiving, via a MAC CE, an indication of a default uplink beam or a default PL RS for a first component carrier, wherein the default uplink beam or the default PL RS is associated with an SRS resource; and sending one or more SRSs based at least in part on applying the default uplink beam or the default PL RS to multiple component carriers including a second component carrier.

[0166] In the tenth aspect, alone or in combination with one or more of the first to ninth aspects, the communication link includes a multi-TRP communication link having a multi-DCI configuration or a single DCI configuration, and the application of one or more of the default uplink beam or the default PL RS to the second component carrier is at least partially based on the first component carrier and the second component carrier being associated with the same TRP.

[0167] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, determining one or more of a default uplink beam or a default PL RS for a first component carrier of the communication link comprises one or more of the following: determining one or more of the default uplink beam or the default PL RS for the first component carrier of the communication link based at least in part on a first TCI or a first QCL TypeD reference signal of a QCL of a CORESET with a lowest CORESET ID of the component carrier associated with the same TRP. Determining one or more of the default uplink beam or the default PL RS for the first component carrier of the communication link based at least in part on a second TCI or a second QCL TypeD reference signal of a QCL of an active PDSCH TCI ID associated with the same TRP.

[0168] In the twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the communication link includes a single DCI configuration, and determining one or more of a default uplink beam or a default PL RS for a first component carrier includes determining one or more of a default uplink beam or a default PL RS for the first component carrier based at least in part on a QCL TypeD reference signal of a single TCI state among multiple TCI states mapped to the same TCI code point.

[0169] In the thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, a TCI code point of a single TCI state is mapped to multiple TCI states, and includes a lowest TCI code point ID among the TCI code points mapped to multiple TCI states, a highest TCI code point ID among the TCI code points mapped to multiple TCI states, and a specified TCI code point ID among the TCI code points mapped to multiple TCI states.

[0170] In a fourteenth aspect, alone or in combination with one or more of aspects 1 to thirteen, process 800 includes: for the same TRP, determining one or more of updated uplink beams or updated PL RSs of multiple component carriers associated with the same TRP in an uplink component list, and determining that multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the code point.

[0171] In a fifteenth aspect, either alone or in combination with one or more of aspects one to fourteen, process 800 comprises determining a default downlink beam for each TRP in a most recently monitored timeslot based at least in part on a TCI or QCL having a lowest CORESET ID in the same TRP, wherein the communication link comprises a multi-DCI configuration.

[0172] In a sixteenth aspect, either alone or in combination with one or more of aspects one to fifteen, process 800 includes determining a default downlink beam for each TRP based at least in part on a single TCI state among multiple TCI states mapped to the same TCI code point, the same code point having a lowest TCI code point ID among the TCI code points mapped to the multiple TCI states.

[0173] In the seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, process 800 includes: for the same TRP, determining one or more of the updated uplink beams or updated PL RSs of multiple component carriers associated with the same TRP in the downlink component list, and determining that the multiple component carriers are associated with the same TRP based at least in part on having the same CORESET pool index or the same TCI state order in the TCI code point.

[0174] although Figure 8 Example blocks of process 800 are shown, but in some aspects, process 800 may include more Figure 8 Those blocks shown may be more blocks, fewer blocks, different blocks, or blocks in a different arrangement. Additionally or alternatively, two or more blocks of process 800 may be performed in parallel.

[0175] Fig. 9900 is a block diagram of an example apparatus 900 for wireless communication. Apparatus 900 may be a UE, or a UE may include apparatus 900. In some aspects, apparatus 900 includes a receiving component 902 and a transmitting component 904, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 900 may communicate with another apparatus 906 (such as a UE, a base station, or another wireless communication device) using receiving component 902 and transmitting component 904. As further shown, apparatus 900 may include one or more of determining component 908 or applying component 912, etc.

[0176] In some aspects, the apparatus 900 may be configured to perform Figures 4 to 7 Additionally or alternatively, the apparatus 900 may be configured to perform one or more processes described herein, such as Figure 8 The process 800. In some aspects, Fig. 9 The device 900 and / or one or more components shown may include the above combined Figure 2 Additionally or alternatively, Fig. 9 One or more of the components shown above may be combined Figure 2 Additionally or alternatively, one or more components of the set of components may be at least partially implemented as software stored in a 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 may be executed by a controller or processor to perform the function or operation of the component.

[0177] The receiving component 902 may receive communications from the apparatus 906, such as reference signals, control information, data communications, or a combination thereof. The receiving component 902 may provide the received communications to one or more other components of the apparatus 900. In some aspects, the receiving component 902 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to one or more other components of the apparatus 906. In some aspects, the receiving component 902 may include the above in combination with Figure 2 One or more antennas, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0178] Transmit component 904 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 906. In some aspects, one or more other components of device 906 may generate communications and may provide the generated communications to transmit component 904 for transmission to device 906. In some aspects, transmit component 904 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 906. In some aspects, transmit component 904 may include the above in combination with Figure 2 One or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof of the described UE. In some aspects, the transmit component 904 can be co-located with the receive component 902 in a transceiver.

[0179] The receiving component 902 can receive information associated with determining a default beam and / or a default PL RS for a first component carrier. The determining component 908 can determine one or more of a default uplink beam or a default PL RS for a first component carrier of a communication link. The applying component can apply one or more of the default uplink beam or the default PL RS to a second component carrier of the communication link based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship. The sending component 904 can send an SRS, a PUSCH, a PUCCH, etc. to another device 906.

[0180] Fig. 9 The number and arrangement of components shown are provided as examples. In practice, there may be more than Fig. 9 More components, fewer components, different components, or differently arranged components are shown. In addition, Fig. 9 Two or more components shown may be implemented in a single component, or Fig. 9 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig. 9 The illustrated set (one or more) of components may perform the operations described as being performed by Fig. 9 Another group of components shown performs one or more functions.

[0181] The above disclosure provides illustration and description, but is not intended to be exhaustive or to limit these aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of these aspects.

[0182] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software. It is apparent that the systems and / or methods described herein may be implemented in different forms of hardware, firmware, and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to specific software code, and it should be understood that software and hardware may be designed, at least in part, based on the description herein to implement the systems and / or methods.

[0183] As used herein, satisfying a threshold may refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0184] Even though specific combinations of features are stated in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in ways that are not specifically stated in the claims and / or disclosed in the specification. Although each dependent claim listed below may be directly dependent on only one claim, the disclosure of the various aspects includes the combination of each dependent claim with each other claim in the claim set. A phrase referring to "at least one" in a 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 with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or other orders of a, b, and c).

[0185] Unless explicitly described, any element, action or instruction used in this article should not be interpreted as critical or necessary. In addition, as used herein, "one" and "an" are intended to include one or more items and can be used interchangeably with "one or more". Further, as used herein, "said" is intended to include one or more items related to "said" and can be used interchangeably with "said one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.), and can be used interchangeably with "one or more". If only one item is referred to, the phrase "only one" or similar language is used. In addition, as used herein, the term "having" and / or similar terms are intended to be open terms. Further, unless otherwise explicitly stated, the phrase "based on" is intended to mean "based at least in part". In addition, unless otherwise explicitly stated, as used herein, the term "or" is inclusive when used in a series and can be used interchangeably with "and / or" (e.g., if used in combination with "either" or "only one").

Claims

1. A method of wireless communication performed by a user equipment UE, comprising: identifying one or more of a default uplink beam or a default path loss reference signal PL RS for a first component carrier of the communication link; as well as Sending communications via a second component carrier of the communications link based at least in part on applying the one or more of the default uplink beam or the default PL RS to a second component carrier of the communications link, wherein applying the one or more of the default uplink beam or the default PL RS to the second component carrier of the communications link is based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship.

2. The method according to claim 1, wherein: The application of the one or more of the default uplink beam or the default PL RS to the second component carrier of the communication link is at least partially based on the second component carrier being indicated in an uplink component carrier list, and the uplink component carrier list indicates that the one or more of the default uplink beam or the PL RS are to be applied to the second component carrier of the communication link.

3. The method according to claim 1, wherein: The one or more of the default uplink beam or the default PL RS of the first component carrier of the communication link is based at least in part on one or more of: a first reference signal associated with the control resource set of the lowest control resource set identifier, or A second reference signal associated with an active physical downlink shared channel.

4. The method according to claim 3, wherein: The first reference signal includes a first transmission configuration indicator TCI of a control resource set having a lowest control resource set identifier or a QCL Type D reference signal of a quasi co-located QCL, or The second reference signal includes a second TCI identified by an active physical downlink shared channel TCI or a QCL Type D reference signal of the QCL.

5. The method according to claim 4, further comprising: One or more of updated uplink beams or updated PL RSs of the plurality of component carriers in the uplink component carrier list are identified based at least in part on an updated TCI or QCL of a single component carrier of the plurality of component carriers in the downlink component carrier list.

6. The method according to claim 5, wherein: The single component carrier among the multiple component carriers in the downlink component carrier list comprises: a component carrier having a lowest control resource set identifier among the component carriers in both the downlink component carrier list and the uplink component carrier list, The component carrier having the highest control resource set identifier among the component carriers in both the downlink component carrier list and the uplink component carrier list, or The designated components in the component carriers in both the downlink component carrier list and the uplink component carrier list.

7. The method according to claim 1, wherein: The communication link includes a multi-transmission receiving point TRP communication link with multiple downlink control information DCI configurations or a single DCI configuration, and Wherein, the application of the one or more of the default uplink beam or the default PL RS to the second component carrier is at least partially based on the first component carrier and the second component carrier being associated with the same TRP.

8. The method according to claim 7, wherein: The identification of the one or more of the default uplink beam or the default PL RS for the first component carrier of the communication link comprises one or more of: identifying one or more of the default uplink beam or the default PL RS of the first component carrier of the communication link based at least in part on a first transmission configuration indicator TCI with a lowest control resource set identifier or a first QCL TypeD reference signal of a quasi-co-located QCL of a component carrier associated with the same TRP, or The default uplink beam or one or more of the default PL RSs of the first component carrier of the communication link are identified at least in part based on a second TCI of an active physical downlink shared channel or a second QCL TypeD reference signal of the QCL associated with the same TRP.

9. The method according to claim 7, wherein: The communication link includes the single DCI configuration, and The identification of one or more of the default uplink beam or the default PL RS of the first component carrier includes: The one or more of the default uplink beam or the default PL RS of the first component carrier are identified based at least in part on a QCL Type D reference signal of a single TCI state among a plurality of TCI states mapped to a same TCI code point.

10. The method according to claim 9, wherein: The TCI code point of the single TCI state is mapped to multiple TCI states and includes: a lowest TCI code point identifier among the TCI code points mapped to the plurality of TCI states, the highest TCI code point identifier among the TCI code points mapped to the plurality of TCI states, or The specified TCI code point identifiers of the TCI code points mapped to the plurality of TCI states.

11. The method according to claim 7, further comprising: for the same TRP, identifying one or more of the updated uplink beams or updated PL RSs of the plurality of component carriers associated with the same TRP in the uplink component list, and The multiple component carriers are identified as being associated with the same TRP based at least in part on having the same control resource set pool index or the same TCI state order in the codepoint.

12. The method according to claim 7, further comprising: identifying a default downlink beam for each TRP based at least in part on the TCI or QCL of the control resource set having the lowest control resource set identification in the same TRP in a most recently monitored timeslot, Wherein, the communication link includes multiple DCI configurations.

13. The method according to claim 7, further comprising: A default downlink beam for each TRP is identified based at least in part on a single TCI state among multiple TCI states mapped to the same TCI code point, wherein the same code point has a lowest TCI code point identifier among the TCI code points mapped to the multiple TCI states.

14. The method according to claim 7, further comprising: for the same TRP, identifying one or more of the updated uplink beams or updated PL RSs of the plurality of component carriers associated with the same TRP in the downlink component list, and The multiple component carriers are identified as being associated with the same TRP based at least in part on having the same control resource set pool index or the same TCI state order in the TCI code point.

15. A user equipment UE for wireless communication, comprising: Memory; as well as one or more processors, the one or more processors operably coupled to the memory, the memory and the one or more processors configured to: identifying one or more of a default uplink beam or a default path loss reference signal PL RS for a first component carrier of the communication link; as well as Sending communications via a second component carrier of the communications link based at least in part on applying the one or more of the default uplink beam or the default PL RS to a second component carrier of the communications link, wherein applying the one or more of the default uplink beam or the default PL RS to the second component carrier of the communications link is based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship.

16. The UE according to claim 15, wherein: The application of the one or more of the default uplink beam or the default PL RS to the second component carrier of the communication link is at least partially based on the second component carrier being indicated in an uplink component carrier list, and the uplink component carrier list indicates that the one or more of the default uplink beam or the PL RS are to be applied to the second component carrier of the communication link.

17. The UE according to claim 15, wherein: The one or more of the default uplink beam or the default PL RS of the first component carrier of the communication link is based at least in part on one or more of: a first reference signal associated with a minimum control resource set identifier, or A second reference signal associated with an active physical downlink shared channel.

18. The UE according to claim 17, wherein: The first reference signal includes a first transmission configuration indicator TCI with a minimum control resource set identifier or a QCL Type D reference signal of a quasi co-located QCL, or The second reference signal includes a second TCI identified by an active physical downlink shared channel TCI or a QCL Type D reference signal of the QCL.

19. The UE according to claim 18, wherein: The one or more processors are further configured to: One or more of updated uplink beams or updated PL RSs of the plurality of component carriers in the uplink component carrier list are identified based at least in part on an updated TCI or QCL of a single component carrier of the plurality of component carriers in the downlink component carrier list.

20. The UE according to claim 19, in, The single component carrier among the multiple component carriers in the downlink component carrier list comprises: a component carrier having a lowest control resource set identifier among the component carriers in both the downlink component carrier list and the uplink component carrier list, a component carrier having a highest control resource set identifier among the component carriers in both the downlink component carrier list and the uplink component carrier list, or The designated components in the component carriers in both the downlink component carrier list and the uplink component carrier list.

21. The UE according to claim 15, wherein: The communication link includes a multi-transmission receiving point TRP communication link with multiple downlink control information DCI configurations or a single DCI configuration, and Wherein, the application of the one or more of the default uplink beam or the default PL RS to the second component carrier is at least partially based on the first component carrier and the second component carrier being associated with the same TRP.

22. The UE according to claim 21, wherein: The identification of the one or more of the default uplink beam or the default PL RS for the first component carrier of the communication link comprises one or more of: identification of one or more of the default uplink beam or the default PL RS of the first component carrier of the communication link based at least in part on a first transmission configuration indicator TCI of a control resource set with a lowest control resource set identifier of a component carrier associated with the same TRP or a first QCL TypeD reference signal of a quasi-co-located QCL, or An identification of one or more of the default uplink beam or the default PL RS of the first component carrier of the communication link based at least in part on a second TCI or a second QCL TypeD reference signal of the QCL identified by an active physical downlink shared channel TCI associated with the same TRP.

23. The UE according to claim 21, wherein: The communication link includes the single DCI configuration, and The identification of one or more of the default uplink beam or the default PL RS of the first component carrier includes: The identification of the one or more of the default uplink beam or the default PL RS for the first component carrier based at least in part on a QCL Type D reference signal of a single TCI state among a plurality of TCI states mapped to the same TCI code point.

24. The UE according to claim 23, wherein: The TCI code point of the single TCI state is mapped to multiple TCI states and includes: the lowest TCI identifier among the TCI code points mapped to the plurality of TCI states, the highest TCI identifier among the TCI code points mapped to the multiple TCI states, or The specified TCI identifiers of the TCI code points mapped to the multiple TCI states.

25. The UE according to claim 21, wherein: The one or more processors are further configured to: for the same TRP, identifying one or more of the updated uplink beams or updated PL RSs of the plurality of component carriers associated with the same TRP in the uplink component list, and The multiple component carriers are identified as being associated with the same TRP based at least in part on having the same control resource set pool index or the same TCI state order in the codepoint.

26. The UE according to claim 21, wherein: The one or more processors are further configured to: identifying a default downlink beam for each TRP based at least in part on the TCI or QCL of the control resource set having the lowest control resource set identification in the same TRP in a most recently monitored timeslot, Wherein, the communication link includes multiple DCI configurations.

27. The UE according to claim 21, wherein: The one or more processors are further configured to: A default downlink beam for each TRP is identified based at least in part on a single TCI state among multiple TCI states mapped to the same TCI code point, wherein the same code point has a lowest TCI code point identifier among the TCI code points mapped to the multiple TCI states.

28. The UE according to claim 21, wherein: The one or more processors are further configured to: for the same TRP, identifying one or more of the updated uplink beams or updated PL RSs of the plurality of component carriers associated with the same TRP in the downlink component list, and The multiple component carriers are identified as being associated with the same TRP based at least in part on having the same control resource set pool index or the same TCI state order in the codepoint.

29. A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising: One or more instructions that, when executed by one or more processors of a user device, cause the one or more processors to: identifying one or more of a default uplink beam or a default path loss reference signal PL RS for a first component carrier of the communication link; and Sending communications via a second component carrier of the communications link based at least in part on applying the one or more of the default uplink beam or the default PL RS to a second component carrier of the communications link, wherein applying the one or more of the default uplink beam or the default PL RS to the second component carrier of the communications link is based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship.

30. The non-transitory computer readable medium of claim 29, wherein: The application of the one or more of the default uplink beam or the default PL RS to the second component carrier of the communication link is at least partially based on the second component carrier being indicated in an uplink component carrier list, and the uplink component carrier list indicates that the one or more of the default uplink beam or the PL RS are to be applied to the second component carrier of the communication link.

31. The non-transitory computer readable medium of claim 29, wherein: The one or more of the default uplink beam or the default PL RS of the first component carrier of the communication link is based at least in part on one or more of: a first reference signal associated with a minimum control resource set identifier, or A second reference signal associated with an active physical downlink shared channel.

32. An apparatus for wireless communication, comprising: means for identifying one or more of a default uplink beam or a default path loss reference signal PLRS for a first component carrier of a communication link; as well as A component for sending communication via a second component carrier of the communication link based at least in part on applying the one or more of the default uplink beam or the default PL RS to the second component carrier of the communication link, wherein applying the one or more of the default uplink beam or the default PL RS to the second component carrier of the communication link is based at least in part on the second component carrier not having a currently indicated PL RS or spatial relationship.

33. The device according to claim 32, wherein: The application of the one or more of the default uplink beam or the default PL RS to the second component carrier of the communication link is at least partially based on the second component carrier being indicated in an uplink component carrier list, and the uplink component carrier list indicates that the one or more of the default uplink beam or the PL RS are to be applied to the second component carrier of the communication link.

34. The device according to claim 32, wherein: The one or more of the default uplink beam or the default PL RS of the first component carrier of the communication link is based at least in part on one or more of: means for a first reference signal associated with a lowest control resource set identifier, or Means for a second reference signal associated with an active physical downlink shared channel.

35. The device according to claim 34, wherein The first reference signal includes a first transmission configuration indicator TCI of a control resource set having a lowest control resource set identifier or a QCL Type D reference signal of a quasi co-located QCL, or The second reference signal includes a second TCI identified by an active physical downlink shared channel TCI or a QCL Type D reference signal of the QCL.

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