Signaling used to configure downlink transmission

Abstract

Methods, systems, and devices for configuring signaling for downlink transmissions are described. A user equipment (UE) may receive a configuration message from a base station indicating that a control resource set (CORESET) for a downlink control channel is associated with a transmission configuration indicator (TCI) state set. The UE may then receive a control message from the base station that activates one or more TCI states. The UE may decode the downlink control channel based on the configuration message and the one or more activated TCI states. In some cases, the UE may identify one or more TCI states (e.g., associated with a CORESET) to apply to reception of a physical downlink shared channel (PDSCH) transmission. For example, the UE may determine that one or more TCI states activated by the control message are to be applied. In another example, the UE may determine that one or more different TCI states are to be applied.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 961,954, entitled “Signaling for Configuring Downlink Transmissions,” filed by Khoshnevisan et al. on January 16, 2020, and U.S. Patent Application No. 17 / 119,845, entitled “Signaling for Configuring Downlink Transmissions,” filed by Khoshnevisan et al. on December 11, 2020; each of which is assigned to the assignee of this application. Technical Field

[0003] The following relates generally to wireless communications and, more particularly, to signaling for configuring downlink transmissions. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems (such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems), and fifth generation (5G) systems, which may be referred to as new radio (NR) systems. These systems may use various technologies, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform extended orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting the communication of multiple communication devices, which may be referred to as user equipment (UE) in addition.

[0005] In some wireless communication systems, a base station may transmit control information to a UE via a physical downlink control channel (PDCCH) using a resource set. The PDCCH may include decoded bits of a demodulation reference signal (DMRS) and downlink control information (DCI). The base station may transmit the PDCCH using a physical layer associated with an antenna port and a transmission configuration indicator (TCI) state. In some cases, the reliability of the network may depend on the reliability of each channel, and a channel may become unreliable and may adversely affect network performance. Summary of the invention

[0006] The described technology relates to improved methods, systems, devices and apparatus (devices) that support signaling for configuring downlink transmissions. In general, the described technology provides for configuring physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH) transmissions. More specifically, a control resource set (CORESET) including one or more resource elements (REs) can be used to transmit PDCCH transmissions. Each CORESET can be associated with a transmission configuration indicator (TCI) state set. The base station can transmit PDCCH or PDSCH transmissions according to one or more activated TCI states (e.g., of a TCI state set associated with a CORESET), and the UE can apply the one or more activated TCI states to receive and decode PDCCH or PDSCH transmissions. The base station can indicate the one or more activated TCI states to a user equipment (UE) so that the UE can receive and decode PDCCH or PDSCH transmissions.

[0007] A method for wireless communication by a UE is described. The method may include: identifying that a CORESET for a downlink control channel is associated with a set of multiple TCI states; receiving a control message from a base station to activate one or more TCI states in the set of multiple TCI states for the CORESET; and decoding the downlink control channel based on the one or more activated TCI states.

[0008] An apparatus for wireless communication by a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: identify that a CORESET for a downlink control channel is associated with a set of multiple TCI states; receive a control message from a base station to activate one or more TCI states in the set of multiple TCI states for the CORESET; and decode the downlink control channel based on the one or more activated TCI states.

[0009] Another apparatus for wireless communication by a UE is described. The apparatus may include: means for identifying that a CORESET for a downlink control channel is associated with a set of multiple TCI states; means for receiving a control message from a base station to activate one or more TCI states in the set of multiple TCI states for the CORESET; and means for decoding the downlink control channel based on the one or more activated TCI states.

[0010] A non-transitory computer-readable medium storing code for wireless communication by a UE is described. The code may include instructions executable by a processor for the following operations: identifying that a CORESET for a downlink control channel is associated with a set of multiple TCI states; receiving a control message from a base station to activate one or more TCI states in the set of multiple TCI states for the CORESET; and decoding the downlink control channel based on the one or more activated TCI states.

[0011] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: receiving a configuration message from a base station indicating that a CORESET for a downlink control channel is associated with the TCI state set.

[0012] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for: determining, based on an indication within the control message, that a single TCI state can be activated for the CORESET; and identifying a first TCI state that can be activated based on the indication, wherein the one or more activated TCI states include a first TCI state.

[0013] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: determining, based on an indication within the control message, that two TCI states can be activated for the CORESET; identifying a first TCI state that can be activated based on the indication; and identifying a second TCI state that can be activated based on the indication, wherein the one or more activated TCI states include a first TCI state and a second TCI state.

[0014] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, receiving the control message may include operations, features, apparatus, or instructions for the following actions: receiving an indication of the one or more activated TCI states, wherein the indication includes one or more TCI state identifiers (IDs).

[0015] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, receiving the control message may include operations, features, apparatuses, or instructions for the following actions: receiving an indication of the one or more activated TCI states, wherein the indication includes one or more indexes associated with the one or more activated TCI states.

[0016] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the control message includes a first field configured to indicate a first TCI state, a second field configured to indicate a second TCI state, and a third field configured to indicate whether the first TCI state or the first TCI state and the second TCI state are activated.

[0017] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the third field is configured to indicate whether the control message includes the second field.

[0018] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the control message includes a dynamic number of fields based on the number of activated TCI states.

[0019] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the configuration message further indicates that the set of multiple TCI states can be mapped using frequency division multiplexing (FDM) mapping, time division multiplexing (TDM) mapping, or space division multiplexing mapping.

[0020] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the configuration message further indicates parameters for mapping the set of multiple TCI states using at least two of an FDM mapping scheme, a TDM mapping scheme, and a spatial division multiplexing mapping scheme; and the control message indicates one of an FDM mapping scheme, a TDM mapping scheme, or a spatial division multiplexing mapping scheme for mapping the one or more activated TCI states.

[0021] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the control message includes an indication of a component carrier (CC) group to which the control message belongs.

[0022] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the control message may be a Medium Access Control-Control Element (MAC-CE).

[0023] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the configuration message may be a radio resource control (RRC) message.

[0024] A method for wireless communication by a base station is described. The method may include: identifying a configuration indicating that a CORESET for a downlink control channel is associated with a set of multiple TCI states; transmitting a configuration message indicating the identified configuration to a UE; and transmitting a control message to the UE to activate one or more TCI states in the set of multiple TCI states for the CORESET.

[0025] An apparatus for wireless communication by a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: identify a configuration indicating that a CORESET for a downlink control channel is associated with a set of multiple TCI states; transmit a configuration message indicating the identified configuration to a UE; and transmit a control message to the UE to activate one or more TCI states in the set of multiple TCI states for the CORESET.

[0026] Another apparatus for wireless communication by a base station is described. The apparatus may include: means for identifying a configuration indicating that a CORESET for a downlink control channel is associated with a set of multiple TCI states; means for transmitting a configuration message indicating the identified configuration to a UE; and means for transmitting a control message to the UE to activate one or more TCI states in the set of multiple TCI states for the CORESET.

[0027] A non-transitory computer-readable medium storing code for wireless communication by a base station is described. The code may include instructions executable by a processor for the following operations: identifying a configuration indicating that a CORESET for a downlink control channel is associated with a set of multiple TCI states; transmitting a configuration message indicating the identified configuration to a UE; and transmitting a control message to the UE to activate one or more TCI states in the set of multiple TCI states for the CORESET.

[0028] Some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatuses, or instructions for the following actions: transmitting a downlink control message to the UE via a downlink control channel according to one or more activated TCI states for the CORESET.

[0029] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the control message includes an indication that a single TCI state can be activated for the CORESET; the indication indicates a first TCI state that can be activated; and the one or more activated TCI states include the first TCI state.

[0030] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the control message includes an indication that two TCI states can be activated for the CORESET; the indication indicates that a first TCI state and a second TCI state can be activated; and the one or more activated TCI states include a first TCI state and a second TCI state.

[0031] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, transmitting the configuration message may include operations, features, apparatus, or instructions for the following actions: transmitting an indication of the one or more activated TCI states, wherein the indication includes a TCI state ID.

[0032] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, transmitting the configuration message may include operations, features, apparatus, or instructions for the following actions: transmitting an indication of the one or more TCI states, wherein the indication includes one or more indexes associated with the one or more activated TCI states.

[0033] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the control message includes a first field configured to indicate a first TCI state, a second field configured to indicate a second TCI state, and a third field configured to indicate which of the first TCI state, the second TCI state, or the two TCI states can be activated.

[0034] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the control message includes a dynamic number of fields based on the number of activated TCI states.

[0035] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the configuration message further indicates that the set of multiple TCI states can be mapped using FDM mapping, TDM mapping, or spatial division multiplexing mapping.

[0036] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the configuration message further indicates parameters for mapping the set of multiple TCI states using at least two of an FDM mapping scheme, a TDM mapping scheme, and a spatial division multiplexing mapping scheme; and the control message indicates one of an FDM mapping scheme, a TDM mapping scheme, or a spatial division multiplexing mapping scheme for mapping the one or more activated TCI states.

[0037] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the control message includes an indication of a CC group to which the control message belongs.

[0038] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the control message may be a MAC-CE.

[0039] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the configuration message may be an RRC message.

[0040] A method for wireless communication at a UE is described. The method may include: receiving a configuration message from a base station, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; receiving a physical downlink control transmission on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a physical downlink shared channel (PDSCH) transmission; identifying at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on the absence of a TCI field indicating a TCI state for the PDSCH transmission included in the scheduling information; and decoding the PDSCH transmission according to the at least one TCI state.

[0041] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: receive a configuration message from a base station, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; receive a physical downlink control transmission on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on the absence of a TCI field indicating a TCI state for the PDSCH transmission included in the scheduling information; and decode the PDSCH transmission according to the at least one TCI state.

[0042] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for receiving a configuration message from a base station, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; means for receiving a physical downlink control transmission on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; means for identifying at least one TCI state in the set of activated TCI states to apply to reception of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission; and means for decoding the PDSCH transmission according to the at least one TCI state.

[0043] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor for the following operations: receiving a configuration message from a base station, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; receiving a physical downlink control transmission on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on the absence of a TCI field indicating a TCI state for the PDSCH transmission included in the scheduling information; and decoding the PDSCH transmission according to the at least one TCI state.

[0044] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the identification may be based on a scheduling offset for the PDSCH transmission that may be greater than a threshold scheduling offset.

[0045] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the threshold scheduling offset may be a time duration for quasi co-location (QCL).

[0046] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: receiving a control message from a base station to activate two TCI states for the CORESET, wherein at least one TCI state to be applied to the reception of the PDSCH transmission includes at least one of the two activated TCI states.

[0047] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: determining, based on scheduling information for the PDSCH transmission, to apply one of the two activated TCI states to the reception of the PDSCH transmission.

[0048] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: identifying one of the two activated TCI states to apply to the reception of PDSCH transmission based on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within a control message that each indicate one of the two activated TCI states.

[0049] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: determining, based on scheduling information for the PDSCH transmission, to apply both of the two activated TCI states to the reception of the PDSCH transmission.

[0050] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: decoding the physical downlink control transmission based on the configuration message and at least one TCI state of the two activated TCI states.

[0051] A method for wireless communication at a UE is described. The method may include: receiving a configuration message from a base station, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; receiving a physical downlink control transmission, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and decoding the PDSCH transmission according to the at least one TCI state.

[0052] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: receive a configuration message from a base station indicating that a CORESET is associated with a set including a plurality of activated TCI states; receive a physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and decode the PDSCH transmission according to the at least one TCI state.

[0053] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for receiving a configuration message from a base station, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; means for receiving a physical downlink control transmission, the physical downlink control transmission including scheduling information for a PDSCH transmission; means for identifying at least one TCI state in the set of activated TCI states to apply to reception of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and means for decoding the PDSCH transmission according to the at least one TCI state.

[0054] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor for the following operations: receiving a configuration message from a base station indicating that a CORESET is associated with a set including a plurality of activated TCI states; receiving a physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and decoding the PDSCH transmission according to the at least one TCI state.

[0055] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the threshold scheduling offset may be a time duration for the QCL.

[0056] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for: identifying one or more CORESETs, each CORESET being associated with a transmission received prior to decoding the PDSCH transmission; determining a subset of the one or more CORESETs, the subset excluding a CORESET from the one or more CORESETs that may be associated with a set comprising multiple activated TCI states; and identifying a CORESET from the subset of the one or more CORESETs, the CORESET having a CORESET ID value that is less than each CORESET ID of other CORESETs from the subset of the one or more CORESETs, wherein at least one TCI state to be applied to the reception of the PDSCH transmission includes a TCI state associated with the identified CORESET, the identified CORESET having a CORESET ID value that is less than each CORESET ID of other CORESETs.

[0057] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: identifying a CORESET associated with two activated TCI states, wherein at least one TCI state to be applied to reception of the PDSCH transmission includes at least one of the two activated TCI states.

[0058] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, identifying a CORESET may include operations, features, apparatuses, or instructions for: identifying one or more CORESETs associated with a transmission received before identifying the CORESET; and determining that the CORESET ID with the lowest value from each CORESET ID of the one or more CORESETs may be the CORESET ID that identifies the CORESET.

[0059] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining that one of the two activated TCI states is to be applied to the reception of the PDSCH transmission.

[0060] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: identifying one of the two activated TCI states to apply to the reception of PDSCH transmission based on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within a control message that each indicate one of the two activated TCI states.

[0061] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for determining that both of the two activated TCI states are to be applied to the reception of the PDSCH transmission.

[0062] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: decoding the physical downlink control transmission based on the configuration message and at least one TCI state of the two activated TCI states.

[0063] A method for wireless communication at a base station is described. The method may include: transmitting a configuration message to a UE, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; transmitting a physical downlink control transmission to the UE on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state in the activated TCI state set to apply to transmission of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission; and transmitting the PDSCH transmission according to the at least one TCI state.

[0064] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: transmit a configuration message to a UE, the configuration message indicating that a CORESET is associated with a set including multiple activated TCI states; transmit a physical downlink control transmission to the UE on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission; and transmit the PDSCH transmission according to the at least one TCI state.

[0065] Another apparatus for wireless communication at a base station is described. The apparatus may include: means for transmitting a configuration message to a UE, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; means for transmitting a physical downlink control transmission to the UE on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; means for identifying at least one TCI state in the set of activated TCI states to apply to transmission of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission; and means for transmitting the PDSCH according to the at least one TCI state.

[0066] A non-transitory computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor for the following operations: transmitting a configuration message to a UE, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; transmitting a physical downlink control transmission to the UE on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on the absence of a TCI field indicating a TCI state for the PDSCH transmission included in the scheduling information; and transmitting the PDSCH transmission according to the at least one TCI state.

[0067] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the scheduling information for the PDSCH transmission defines a scheduling offset for the PDSCH transmission that may be greater than a threshold scheduling offset.

[0068] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the threshold scheduling offset may be a time duration for the QCL.

[0069] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: transmitting a control message to the UE to activate two TCI states for the CORESET, wherein at least one TCI state to be applied to the reception of the PDSCH transmission includes at least one of the two activated TCI states.

[0070] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, transmitting the PDSCH transmission may include operations, features, apparatus, or instructions for the following actions: transmitting the PDSCH transmission according to one of two activated TCI states.

[0071] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: identifying one of the two activated TCI states to apply to the reception of PDSCH transmission based on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within a control message that each indicate one of the two activated TCI states.

[0072] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, transmitting the PDSCH transmission may include operations, features, apparatus, or instructions for the following actions: transmitting the PDSCH transmission according to two of two activated TCI states.

[0073] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for transmitting the physical downlink control transmission based on the configuration message and at least one of the two activated TCI states.

[0074] A method for wireless communication at a base station is described. The method may include: transmitting a configuration message to a UE, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; transmitting a physical downlink control transmission to the UE, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state in the activated TCI state set to apply to transmission of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and transmitting the PDSCH transmission according to the at least one TCI state.

[0075] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: transmit a configuration message to a UE, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; transmit a physical downlink control transmission to the UE, the physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the set of activated TCI states to apply to the transmission of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and transmit the PDSCH transmission according to the at least one TCI state.

[0076] Another apparatus for wireless communication at a base station is described. The apparatus may include: means for transmitting a configuration message to a UE, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; means for transmitting a physical downlink control transmission to the UE, the physical downlink control transmission including scheduling information for a PDSCH transmission; means for identifying at least one TCI state in the set of activated TCI states to apply to transmission of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and means for transmitting the PDSCH according to the at least one TCI state.

[0077] A non-transitory computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor for the following operations: transmitting a configuration message to a UE, the configuration message indicating that a CORESET is associated with a set including a plurality of activated TCI states; transmitting a physical downlink control transmission to the UE, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and transmitting the PDSCH transmission according to the at least one TCI state.

[0078] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the threshold scheduling offset may be a time duration for the QCL.

[0079] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: identifying a CORESET associated with two activated TCI states, wherein at least one TCI state to be applied to reception of the PDSCH transmission includes at least one of the two activated TCI states.

[0080] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, identifying a CORESET may include operations, features, apparatuses, or instructions for: identifying one or more CORESETs associated with transmissions transmitted before identifying the CORESET; and determining that the CORESET ID with the lowest value from each CORESET ID of the one or more CORESETs may be the CORESET ID that identifies the CORESET.

[0081] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, transmitting the PDSCH transmission may include operations, features, apparatus, or instructions for the following actions: transmitting the PDSCH transmission according to one of two activated TCI states.

[0082] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for the following actions: identifying one of the two activated TCI states to apply to the reception of PDSCH transmission based on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within a control message that each indicate one of the two activated TCI states.

[0083] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, transmitting the PDSCH transmission may include operations, features, apparatus, or instructions for the following actions: transmitting the PDSCH transmission according to two of two activated TCI states.

[0084] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, apparatus, or instructions for transmitting the physical downlink control transmission based on the configuration message and at least one of the two activated TCI states. BRIEF DESCRIPTION OF THE DRAWINGS

[0085] Figure 1 and 2

[0013] An example of a wireless communication system supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is illustrated.

[0086] Figure 3A and 3B Examples of configurations supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure are illustrated.

[0087] Figure 4 and 5 An example process flow is illustrated to support signaling for configuring downlink transmissions in accordance with aspects of the present disclosure.

[0088] Figure 6 and 7 A block diagram of a device supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is shown.

[0089] Figure 8 A block diagram of a user equipment (UE) transcoding manager supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is shown.

[0090] Fig. 9

[0013] A diagram of a system including a device supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is shown.

[0091] Fig.10 and 11 A block diagram of a device supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is shown.

[0092] Fig.12 A block diagram of a base station transcoding manager supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is shown.

[0093] Fig.13

[0013] A diagram of a system including a device supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is shown.

[0094] Figures 14 to 22 A flow chart illustrating a method of supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0095] In some wireless communication systems, a base station may transmit control information to a user equipment (UE) via a physical downlink control channel (PDCCH) using a control resource set (CORESET). A CORESET may include one or more resource element groups (REGs), which may include one or more resource elements (REs) for transmitting a PDCCH. A base station may use one or more activated transmission configuration indicator (TCI) states to transmit a PDCCH associated with a CORESET. A base station may also use one or more activated TCI states to transmit a physical downlink shared channel (PDSCH) transmission. Different TCI states may correspond to QCL relationships with different reference signal transmissions. That is, a UE may measure a reference signal using a receive beamforming parameter based on a TCI state indicated for a reference signal transmission from a base station. Therefore, the UE and the base station may each determine the one or more activated TCI states to transmit and receive downlink transmissions using the one or more activated TCI states.

[0096] In some cases, the UE and the base station may be configured to use a single TCI state for PDCCH transmission. Here, the UE and the base station may be configured to use one or more activated TCI states for PDCCH transmission. This may be implemented to achieve one or more advantages. For example, two activated TCI states can increase the diversity of the transmission, and thus increase the reliability of the transmission. Here, the base station may be configured to indicate an activated TCI state or more than one activated TCI state (e.g., two activated TCI states) to the UE before transmitting the PDCCH transmission. Therefore, the base station and the UE are operable to use more than one activated TCI state for PDCCH transmission, thereby increasing the reliability of the PDCCH transmission when compared to the PDCCH transmission associated with only a single TCI state. In this way, the supported technology may include improved network operation, and in some examples, network efficiency and other benefits may be improved.

[0097] The base station may transmit a radio resource control (RRC) message indicating the CORESET configuration to the UE. For example, the base station may transmit an RRC message or a configuration message to indicate a list of TCI states associated with the CORESET. The base station may then transmit a media access control-control element (MAC-CE) to activate one or more TCI states for the CORESET. The size of the MAC-CE may be dynamic, wherein the size of the MAC-CE increases as the number of activated TCI states increases. Alternatively, the MAC-CE may be of a fixed size and may include an indication of the number of activated TCI states. In either case, the MAC-CE may indicate one or more activated TCI states (e.g., by a TCI state identifier (ID), by an index associated with a TCI state). The base station may then transmit a PDCCH transmission using the activated TCI state. The UE may monitor the CORESET for PDCCH transmission and decode the PDCCH transmission based on the activated TCI state.

[0098] The PDCCH transmission may include one or more fields indicating at least one activated TCI state for PDSCH transmission. The base station may transmit the PDSCH transmission using the indicated TCI state (e.g., indicated within the PDCCH transmission), and the UE may decode the PDSCH transmission based on the indicated TCI state. In some other cases, the UE may not determine which TCI states are indicated for PDSCH transmission based on the indication within the PDCCH transmission. For example, the PDCCH may not include a field indicating one or more activated TCI states for PDSCH transmission. Here, the UE and the base station may use one or more activated TCI states associated with the PDCCH transmission for PDSCH transmission. In another example, the scheduling offset associated with the PDSCH transmission and indicated within the PDCCH transmission may be less than the time duration for the QCL. Here, the UE and the base station may use a default QCL assumption for PDSCH transmission, which is the QCL relationship or TCI state of the CORESET associated with the monitored search space and having the lowest CORESET ID in the most recent timeslot in which the UE monitors one or more CORESETs within the active bandwidth part (BWP) of the base station.

[0099] Various aspects of the disclosure are initially described in the context of a wireless communication system. Various aspects of the disclosure are then described in the context of a second wireless communication system, configurations, and process flows. Various aspects of the disclosure are further illustrated by and described with reference to device diagrams, system diagrams, and flow diagrams related to signaling for configuring downlink transmissions.

[0100] Figure 1 An example of a wireless communication system 100 that supports signaling for configuring downlink transmissions according to various aspects of the present disclosure is illustrated. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an advanced LTE (LTE-A) network, an LTE-A Pro network, or a new radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0101] The base stations 105 may be dispersed throughout a geographic area to form the wireless communication system 100, and may be different forms of devices or devices with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals according to one or more radio access technologies.

[0102] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile, or stationary and mobile at different times. The UEs 115 may be different forms of devices or devices with different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), such as Figure 1 as shown in .

[0103] Each base station 105 may communicate with the core network 130, or communicate with each other, or both. For example, the base station 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3 or other interfaces). The base stations 105 may communicate with each other directly (e.g., directly between the base stations 105), or indirectly (e.g., via the core network 130), or directly and indirectly on the backhaul link 120 (e.g., via X2, Xn or other interfaces). In some examples, the backhaul link 120 may be or include one or more wireless links.

[0104] One or more of the base stations 105 described herein may include or may be referred to by a person of ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a B node, an evolved B node (eNB), a next generation B node or a gigabit B node (any of which may be referred to as a gNB), a home B node, a home evolved B node, or other suitable terminology.

[0105] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable term, where a "device" may also be referred to as a unit, a station, a terminal, or a client, etc. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects such as electrical appliances or vehicles, meters, etc.

[0106] The UE 115 described herein may be able to communicate with various types of devices, such as other UEs 115, which may sometimes act as relays, as well as base stations 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1 as shown in .

[0107] The UE 115 and the base station 105 may communicate wirelessly with each other via one or more communication links 125 on one or more carriers. The term "carrier" may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of a radio frequency spectrum band (e.g., a BWP) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers (CCs) and one or more uplink CCs according to a carrier aggregation configuration. Carrier aggregation may be used in conjunction with both frequency division duplex (FDD) and time division duplex (TDD) CCs.

[0108] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by UE 115. A carrier may operate in a standalone mode in which initial acquisition and connection may be made by UE 115 via the carrier, or a carrier may operate in a non-standalone mode in which a connection is anchored using a different carrier (e.g., a different carrier of the same or different radio access technology).

[0109] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in an FDD mode), or may be configured to carry both downlink and uplink communications (e.g., in a TDD mode).

[0110] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system using MCM technology, an RE may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each RE may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Thus, the more REs received by the UE 115 and the higher the order of the modulation scheme, the higher the data rate of the UE 115 can be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further improve the data rate or data integrity of communications with the UE 115.

[0111] The time interval of the base station 105 or the UE 115 can be expressed as a multiple of a basic time unit, and the basic time unit can be, for example, a sampling period T s =1 / (Δf max ·N f ) seconds, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. Time intervals of communication resources may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0112] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of code element periods (e.g., depending on the length of the cyclic prefix added before each code element period). In some wireless communication systems 100, a time slot may be further divided into a plurality of mini-time slots containing one or more code elements. Excluding the cyclic prefix, each code element period may contain one or more (e.g., N f ) sampling period. The duration of a symbol period may depend on the subcarrier spacing or the operating band.

[0113] A subframe, slot, mini-slot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0114] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier, for example, using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a number of symbol periods and may extend across a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search a control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0115] In some examples, base stations 105 may be mobile and thus provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0116] The wireless communication system 100 may be configured to support ultra-reliable communication or low latency communication or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low latency communication (URLLC) or mission-critical communication. UE 115 may be designed to support ultra-reliable, low latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private communication or group communication, and may be supported by one or more mission-critical services (such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions may include prioritization of services, and mission-critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low latency, critical mission, and ultra-reliable low latency may be used interchangeably herein.

[0117] In some examples, UE 115 may also be able to communicate directly with other UE 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within a geographic coverage area 110 of a base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105, or may not be able to receive transmissions from the base station 105 for other reasons. In some examples, each group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, wherein each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between each UE 115 without involving the base station 105.

[0118] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), and the EPC or 5GC may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by a base station 105 associated with the core network 130. User IP packets may be delivered via a user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to a network operator IP service 150. Operator IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0119] Some network devices (such as base stations 105) may include subcomponents, such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with each UE 115 through one or more other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmission / reception points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or merged into a single network device (e.g., base station 105).

[0120] The wireless communication system 100 may operate using one or more frequency bands, for example, in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). In general, the 300 MHz to 3 GHz region is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from about 1 decimeter to 1 meter long. UHF waves may be blocked or redirected by buildings and environmental features, but these waves may penetrate various structures sufficiently for macro cells to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) than transmission using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0121] The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band (such as the 5 GHz industrial, scientific, and medical (ISM) band). When operating in an unlicensed radio frequency spectrum band, devices (such as base stations 105 and UEs 115) may employ carrier sensing for conflict detection and avoidance. In some examples, operations in an unlicensed band may be based on a carrier aggregation configuration (e.g., LAA) in coordination with CCs operating in a licensed band. Operations in an unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0122] The base station 105 or UE 115 may be equipped with multiple antennas, which can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located in one or more antenna arrays or antenna panels that can support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographical locations. The base station 105 may have an antenna array having antenna ports of several rows and columns that the base station 105 can use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0123] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals communicated via antenna elements of an antenna array so that some signals propagating at a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals communicated via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each antenna element may be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0124] The base station 105 may transmit PDCCH and PDSCH transmissions to the UE 115. The base station 105 may transmit PDCCH transmissions using a CORESET including one or more REs. Each CORESET may be associated with a TCI state set. The base station 105 may transmit PDCCH or PDSCH transmissions according to one or more activated TCI states (e.g., of a TCI state set associated with the CORESET), and the UE 115 may apply the one or more activated TCI states to receive and decode the PDCCH or PDSCH transmissions. The base station 105 may indicate the one or more activated TCI states to the UE 115 to enable the UE 115 to receive and decode the PDCCH or PDSCH transmissions.

[0125] Figure 2 An example of a wireless communication system 200 that supports signaling for configuring downlink transmissions according to aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 may implement aspects of the wireless communication system 100, such as a base station 105-a and a UE 115-a, which may be referenced Figure 1 Examples of base stations 105 and UEs 115 are described.

[0126] The base station 105-a may communicate an RRC message 205 to the UE 115-a. The RRC message 205 (e.g., a configuration message) may configure one or more CORESETs. For example, the RRC message 205 may include an indication of a CORESET ID and a list of TCI state IDs for the CORESET. That is, each CORESET may be configured with up to 64 TCI states from a total of 128 TCI states. The total number of TCI states may be defined in the PDSCH configuration and included in an information element (e.g., a BWP-DownlinkDedicated information element). The RRC message 205 may indicate between 1 and 64 possible TCI states associated with the CORESET (e.g., via TCI-StatesPDCCH-ToAddList and TCI-StatesPDCCH-ToReleaseList). If CORESET ID is equal to 0, the CORESET may not be configured by the information element ControlResourceSet. Therefore, RRC message 205 may not include a list of possible TCI states associated with CORESET0. Instead, CORESET0 may be configured (e.g., automatically, by default) with the first 64 TCI states out of a total of 128 possible TCI states.

[0127] The RRC message 205 may optionally include an indication of a mapping scheme for the CORESET. That is, if more than one TCI state of the CORESET is activated (e.g., for PDCCH transmission 215), resources for each activated TCI state may be mapped according to a mapping scheme. For example, the RRC message 205 may indicate that if more than one TCI state of the CORESET is activated, resources for the more than one TCI state may be mapped according to an FDM scheme, a TDM scheme, or a spatial division multiplexing (SDM) scheme. If the RRC message 205 includes an indication of a mapping scheme, the RRC message 205 may additionally include parameters for the mapping scheme.

[0128] The base station 105-a may communicate a MAC-CE 210 to the UE 115-a. The MAC-CE 210 may be a control message from the base station 105-a that is configured to indicate one or more activated TCI states for the CORESET (e.g., the CORESET configured by the RRC message 205). In some cases, the MAC-CE 210 may activate TCI states for a group of CCs or BWPs. The MAC-CE 210 may include a field that identifies the CORESET (e.g., a CORESET ID field). The MAC-CE 210 may also include a field that identifies at least one TCI state to be activated (e.g., for subsequent PDCCH transmissions 215). In some cases, the CORESET containing the PDCCH transmission 215 may be configured to include only a single activated TCI state. Here, the MAC-CE 210 may indicate one activated TCI state for subsequent PDCCH transmissions 215. In some other cases (e.g., in the case of the wireless communication system 200), the CORESET including the PDCCH transmission 215 may be configured to include one or more activated TCI states (e.g., one activated TCI state, two activated TCI states). That is, the CORESET including the PDCCH transmission 215 may be dynamically configured to include one or more activated TCI states. Here, the MAC-CE 210 may indicate which TCI states (e.g., of the TCI states associated with the CORESET) are activated for the PDCCH transmission 215.

[0129] The MAC-CE 210 may optionally include an indication of a mapping scheme to be used for the CORESET in the event that more than one TCI state is activated. That is, if the RRC message 205 does not include an indication of a mapping scheme, the MAC-CE 210 may include an indication of a mapping scheme. For example, the MAC-CE 210 may indicate that if more than one TCI state of the CORESET is activated (e.g., for PDCCH transmission 215), the resources for each activated TCI state may be mapped according to a mapping scheme (e.g., an FDM scheme, a TDM scheme, an SDM scheme). If the MAC-CE 210 includes an indication of a mapping scheme, the MAC-CE 210 may additionally include parameters for the mapping scheme.

[0130] The base station 105-a may communicate the PDCCH transmission 215 to the UE 115-a. The base station 105-a may communicate the PDCCH transmission 215 within the CORESET configured by the RRC message 205. Additionally, the base station 105-a may transmit the PDCCH transmission 215 using one or more activated TCI states indicated within the MAC-CE 210. The UE 115-a may receive the PDCCH transmission 215 and decode the PDCCH transmission 215 using the same one or more activated TCI states.

[0131] The PDCCH transmission 215 may include scheduling information for a subsequent PDSCH transmission 220. For example, the PDCCH transmission 215 may include a scheduling offset indicating the PDSCH transmission 220. Additionally, the PDCCH transmission 215 may include downlink control information (DCI) indicating one or more activated TCI states for the PDSCH transmission 220. In some cases, the base station 105-a and the UE 115-a may use the TCI states indicated within the DCI for the PDSCH transmission 220. In some other cases, the base station 105-a and the UE 115-a may determine which TCI states to use for the PDSCH transmission 220 by another method.

[0132] In one example, the PDCCH transmission 215 may not include a field indicating one or more activated TCI states for the PDSCH transmission 220. Here, the UE 115-a and the base station 105-a may determine the TCI state associated with the PDSCH transmission 220 from the one or more activated TCI states associated with the PDCCH transmission 215. That is, the UE 115-a and the base station 105-a may receive and transmit the PDSCH transmission 220 using the one or more TCI states activated for the PDCCH transmission 215. If more than one TCI state is activated for the PDCCH transmission 215, one of the activated TCI states may be used for the PDSCH transmission 220, or all of the activated TCI states may be used for the PDSCH transmission 220. If all of the activated TCI states are used for the PDSCH transmission 220, the multiplexing technique used for the PDCCH transmission 215 may be reused for the PDSCH transmission 220. For example, if base station 105 - a transmits PDCCH transmission 215 using two activated TCI states mapped via a TDM scheme, base station 105 - a may transmit PDSCH transmission 220 using the same two activated TCI states mapped via the same TDM scheme.

[0133] If only one of the activated TCI states is to be used for the PDSCH transmission 220, the UE 115-a and the base station 105-a may determine which of the more than one activated TCI states to use for the PDSCH transmission 220. For example, the UE 115-a and the base station 105-a may select the TCI state associated with the lowest TCI state ID (e.g., from the activated TCI states for the CORESET carrying the PDCCH transmission 215). That is, the UE 115-a and the base station 105-a may compare the TCI state IDs of each activated TCI state of the CORESET carrying the PDCCH to determine which TCI state is associated with the lowest TCI state. In another example, the UE 115-a and the base station 105-a select the TCI state from the activated TCI states of the CORESET carrying the PDCCH transmission 215 based on the order of the fields within the MAC-CE 210. That is, the UE 115-a and the base station 105-a may select the TCI state that was first indicated in the MAC-CE 210. Alternatively, the UE 115-a and the base station 105-a may select the TCI state that was last indicated in the MAC-CE 210.

[0134] In another example, (e.g., as opposed to using the TCI state indicated within the PDCCH transmission 215) the UE 115-a and the base station 105-a may determine which TCI states to use for the PDSCH transmission 220 because the indicated scheduling offset is less than the time duration for the QCL (e.g., timeDurationForQCL). Here, the UE 115-a and the base station 105-a may determine the activated TCI state associated with the PDSCH transmission 220 based on a default QCL assumption for the PDSCH transmission 220. The default QCL assumption may be the QCL relationship or TCI state of the CORESET associated with the monitored search space having the lowest CORESET ID in the most recent timeslot in which the UE 115-a monitored one or more CORESETs within the active BWP of the base station 105-a. If more than one TCI state is activated for the CORESET with the lowest CORESET ID associated with the most recent timeslot, one of the activated TCI states may be used for the PDSCH transmission 220, or all of the activated TCI states may be used for the PDSCH transmission 220. If all of the activated TCI states are used for the PDSCH transmission 220, the multiplexing technique used for the most recent timeslot may be reused for the PDSCH transmission 220. For example, if the base station 105-a transmits the PDCCH transmission 215 using the CORESET with the lowest CORESET ID in the most recent timeslot using two activated TCI states mapped by the SDM scheme, the base station 105-a may transmit the PDSCH transmission 220 using the same two activated TCI states mapped by the same SDM scheme.

[0135] If only one of the activated TCI states is to be used for PDSCH transmission 220, the UE 115-a and the base station 105-a may determine which of the more than one activated TCI states is to be used for PDSCH transmission 220. For example, the UE 115-a and the base station 105-a may select the TCI state associated with the lowest TCI state ID (e.g., from the activated TCI states for the CORESET). That is, the UE 115-a and the base station 105-a may compare the TCI state IDs of each activated TCI state to determine which TCI state is associated with the lowest TCI state. In another example, the UE 115-a and the base station 105-a select the TCI state from the activated TCI states for the CORESET based on the order of the fields within the MAC-CE 210. That is, the UE 115-a and the base station 105-a may select the TCI state that is indicated first within the MAC-CE 210. Alternatively, the UE 115 - a and the base station 105 - a may select the TCI state last indicated within the MAC-CE 210 .

[0136] In another example, the UE 115-a may determine to exclude all CORESETs associated with more than one activated TCI state. In such an example, the default QCL assumption may be the QCL relationship or TCI state of the CORESET associated with the monitored search space having the lowest CORESET ID in the remaining CORESET set (e.g., non-excluded CORESETs) in the most recent time slot in which the UE 115-a monitored one or more CORESETs within the active BWP of the base station 105-a. That is, the UE 115-a may identify a CORESET having one activated TCI state and select the one activated TCI state for PDSCH transmission 220.

[0137] The base station 105-a may communicate the PDSCH transmission 220 to the UE 115-a. The base station 105-a may transmit the PDSCH transmission 220 using one or more activated TCI states, and the UE 115-a may receive and decode the PDSCH transmission 220 using the same one or more activated TCI states.

[0138] Figure 3A and Figure 3B An example of a configuration 300 of a MAC-CE 210 supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is illustrated. In some examples, the configuration 300 may implement aspects of wireless communication systems 100 and 200 (such as MAC-CE 210), which may be referenced Figure 2 An example of a MAC-CE 210 is described. Additionally, the MAC-CE 210 may be as described with reference to Figure 1 and Figure 2 The described transmission from the base station 105 to the UE 115 to activate one or more TCI states. Each of the MAC-CEs 210 may be configured to indicate one or more activated TCI states (e.g., for PDCCH transmission). That is, each of the MAC-CEs 210 may indicate a single activated TCI state or more than one activated TCI state. Configuration 300 may be used for all CORESETs. Alternatively, configuration 300 may be used for a subset of CORESETs configured to use one or more TCI states. That is, a CORESET configured to use only a single TCI state may utilize a different configuration for the MAC-CE 210 that activates the single TCI state.

[0139] Figure 3AConfiguration 300-a of MAC-CE 210-a is illustrated. Configuration 300-a may correspond to a MAC-CE 210-a having a static size. That is, the number of bits included within MAC-CE 210-a may be independent of the number of activated TCI states. For example, MAC-CE 210-a may include 24 bits regardless of the number of activated TCI states.

[0140] The MAC-CE 210-a may include a serving cell ID field 310-a. In some cases, the serving cell ID field 310-a may include five bits of data. The serving cell ID field 310-a may indicate the ID of the CC (or, in some cases, the CC group) to which the CORESET belongs. The MAC-CE 210-a may further include a CORESET ID field 315-a. The CORESET ID field 315-a may include four bits of data (e.g., three bits of data on the first row of the MAC-CE 210-a and one bit of data on the second row). The MAC-CE 210-a may include a first TCI state ID field 320 and a second TCI state ID field 330. Each of the TCI state ID fields 320 and 330 may include seven bits. That is, the TCI state ID may identify the TCI state from 128 possible TCI states. The MAC-CE 210-a may also include an indicator bit 'C' 325-a. The indicator bit 'C' 325-a may indicate whether the second TCI state ID field 330 includes a TCI state ID corresponding to an activated TCI state. For example, if the indicator bit 'C' 325-a includes a logic value of '0', the second TCI state ID field 330 may not include an ID associated with the activated TCI state. That is, the MAC-CE 210-a may activate only a single TCI state (e.g., indicated by the first TCI state ID field 320). Additionally, if the indicator bit 'C' 325-a includes a logic value of '1', the second TCI state ID field 330 may include an ID associated with the activated TCI state. That is, the MAC-CE 210-a may activate two TCI states (e.g., indicated by the first TCI state ID field 320 and the second TCI state ID field 330).

[0141] Figure 3BConfiguration 300-b of MAC-CE 210-b is illustrated. Configuration 300-b may correspond to a MAC-CE 210-b having a dynamic size. That is, the number of bits included within the MAC-CE 210-b may depend on the number of activated TCI states. That is, the MAC-CE 210-b may change size based on the number of activated TCI states. For example, if two TCI states are activated, the MAC-CE 210-b may include 24 bits. Additionally, if one TCI state is activated, the MAC-CE 210-b may include 16 bits.

[0142] The MAC-CE 210-b may include a serving cell ID field 310-b. In some cases, the serving cell ID field 310-b may include five bits of data. The serving cell ID field 310-b may indicate the ID of the CC (or, in some cases, the CC group) to which the CORESET belongs. The MAC-CE 210-b may further include a CORESET ID field 315-b. The CORESET ID field 315-b may include four bits of data (e.g., three bits of data on the first row and one bit of data on the second row of the MAC-CE 210-a). The MAC-CE 210-b may also include a first TCI state index field 335 and an optional second TCI state index field 345. Each of the TCI state index fields 335 and 345 may include six bits. Therefore, the TCI state index fields 335 and 345 may index the TCI state from the TCI state defined in association with the CORESET (e.g., through an RRC message or a configuration message). If 64 or fewer TCI states are defined in association with a CORESET, the six-bit TCI state index fields 335 and 345 may identify an index associated with one of the defined TCI states. The indicator bit 'C' 325-b may indicate the number of activated TCI states. For example, if the indicator bit 'C' 325-b includes a logical value of '0', there may be only a single activated TCI state for the CORESET indicated by the CORESET ID field 315-b. Here, the reserved bit 'R' 340 and the second TCI state index field 345 may not be included in the MAC-CE 210-b. Additionally, if the indicator bit 'C' 325-b includes a logical value of '1', there may be two activated TCI states. Here, the reserved bits 'R' 340-a and 340-b may be logical values ​​'0', and the second TCI state index field 345 may indicate which TCI state is activated (e.g., from a list of TCI states defined for the CORESET).

[0143] Figure 4An example of a process flow 400 that supports signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is illustrated. In some examples, the process flow 400 may implement Figures 1 to 3A and Figure 3B For example, process flow 400 may include signaling between UE 115-b and base station 105-b, which may be as described with reference to Figure 1 and 2 Examples of UE 115 and base station 105 are described. Additionally, some signaling can be implemented as described in reference to Figure 3A and Figure 3B Configuration described.

[0144] At 405, the base station 105-b may transmit a configuration message to the UE 115-b. The configuration message may be as described in reference to Figure 1 and 2 An example of an RRC message described. The configuration message 405 may indicate that a CORESET for a downlink control channel (eg, PDCCH) is associated with a TCI state set. For example, the configuration message 405 may define up to 64 TCI states for the CORESET.

[0145] At 410, the base station 105-b may transmit a control message to the UE 115-b. The control message may be as described in reference to Figures 1 to 3A and Figure 3B For example, the control message can be based on the MAC-CE described in Figure 3A The control message may activate one or more TCI states for the CORESET.

[0146] At 415, UE 115-b may identify an activated TCI state 415. In a first example, UE 115-b may determine that a single TCI state is activated for the CORESET. That is, the control message may include an indication that a single TCI state is activated (e.g., indicator bit 'C'). In another example, UE 115-b may determine that two TCI states are activated for the CORESET. That is, the control message may include an indication that two TCI states are activated (e.g., indicator bit 'C').

[0147] UE 115-b may identify which TCI states are activated based on the control message. That is, the control message may include a TCI state ID within the control message. Additionally, the control message may include a TCI state index (e.g., related to a TCI state set associated with a CORESET) within the control message.

[0148] At 420, UE 115-b may optionally determine a mapping scheme for the activated TCI state. That is, if UE 115-b (e.g., at 415) identifies more than one activated TCI state, UE 115-b may determine the mapping scheme for the more than one activated TCI state at 420. That is, UE 115-b may determine that the TCI states may be mapped via TDM, FDM, or SDM. In some cases, configuration message 405 may indicate one or more of: a mapping scheme for the CORESET and parameters for the mapping scheme. The control message may indicate one of the mapping schemes to be used for the CORESET. Thus, UE 115-b may determine the mapping scheme.

[0149] At 425, the base station 105-b may transmit a PDCCH transmission (e.g., a downlink control channel transmission) to the UE 115-b based on the configuration message and the control message. That is, the base station 105-b may transmit the PDCCH transmission using one or more activated TCI states indicated by the control message.

[0150] At 430, UE 115-b may decode the PDCCH transmission based on the configuration message and the one or more activated TCI states (eg, using the one or more activated TCI states indicated by the control message).

[0151] Figure 5 An example of a process flow 500 that supports signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is illustrated. In some examples, the process flow 500 may implement Figures 1 to 3A and Figure 3B For example, process flow 500 may include signaling between UE 115-c and base station 105-c, which may be as described with reference to Figure 1 and 2 Examples of UE 115 and base station 105 are described. Additionally, some signaling can be implemented as described in reference to Figure 3A and Figure 3B Configuration described.

[0152] At 505, the base station 105-c may transmit a configuration message to the UE 115-c. The configuration message may be as described in reference to Figure 1 and 2 An example of an RRC message described. The configuration message 505 may indicate that a CORESET for a downlink control channel (eg, PDCCH) is associated with a TCI state set. For example, the configuration message 505 may define up to 64 TCI states for the CORESET.

[0153] At 510, the base station 105-c may transmit a control message to the UE 115-c. The control message may be as described in reference to Figures 1 to 3A and Figure 3B For example, the control message can be based on the MAC-CE described in Figure 3A The control message may activate one or more TCI states for the CORESET.

[0154] At 515, the base station 105-c may transmit a PDCCH transmission to the UE 115-c based on the configuration message and the control message (e.g., using one or more activated TCI states indicated by the control message 510). The PDCCH transmission may schedule a PDSCH transmission and include scheduling information for the PDSCH transmission. For example, the PDCCH transmission may include a scheduling offset for the PDSCH transmission.

[0155] At 520, the UE 115-c may identify at least one TCI state to apply to receiving a PDSCH transmission. In a first example, the UE 115-c may identify the at least one TCI state based on the absence of a TCI field included in the scheduling information indicating the TCI state to be used for the PDSCH transmission. Here, the scheduling offset for the PDSCH transmission may be greater than a threshold scheduling offset (e.g., a time duration for the QCL). In this first example, the UE 115-c may determine to apply a TCI state from one or more TCI states activated for a CORESET carrying a PDCCH transmission (e.g., for receiving a PDCCH transmission) to receiving the PDSCH transmission.

[0156] In a second example, the UE 115-c may identify at least one TCI state based on the scheduling offset of the PDSCH transmission being less than a threshold scheduling offset. Here, the UE 115-c may identify one or more CORESETs associated with the transmission received prior to 520. The UE 115-c may then determine, from each CORESET ID of the one or more CORESETs, a CORESET associated with a lowest value of the CORESET ID. The UE 115-c may determine that one or more TCI states associated with the CORESET (e.g., associated with the lowest value of the CORESET ID) are to be applied to reception of the PDSCH.

[0157] In either example, in some cases, the UE 115-c may determine that all (e.g., both) of the one or more TCI states (e.g., two TCI states) are to be applied to reception of the PDSCH. In another case, the UE 115-c may determine that one of the two TCI states is to be applied to reception of the PDSCH. Here, the UE 115-c may identify one of the one or more activated TCI states based on a relative value of a TCI state ID for each of the two activated TCI states or a relative position of two fields within a control message that each indicate one of the two activated TCI states.

[0158] In some examples, the UE 115-c may determine a subset of the one or more CORESETs that excludes CORESETs associated with more than one active TCI state. In such examples, the UE 115-c may determine the CORESET associated with the lowest CORESET ID from each CORESET in the CORESET subset and apply a TCI state associated with the determined CORESET to reception of the PDSCH.

[0159] At 525, the base station 105-c may transmit a PDSCH transmission to the UE 115-c using the identified TCI state.

[0160] At 530, UE 115-c may decode the PDSCH transmission by applying the identified TCI state to reception of the PDSCH transmission.

[0161] Figure 6 A block diagram 600 of a device 605 supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is shown. The device 605 may be an example of aspects of a UE 115 as described herein. The device 605 may include a receiver 610, a UE decoding manager 615, and a transmitter 620. The device 605 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0162] The receiver 610 may receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to signaling for configuring downlink transmissions). The information may be passed to other components of the device 605. The receiver 610 may be a reference Fig. 9 Examples of aspects of the described transceiver 920. The receiver 610 may utilize a single antenna or a collection of antennas.

[0163] The UE decoding manager 615 may identify that a CORESET for a downlink control channel is associated with a TCI state set, receive a control message from a base station activating one or more TCI states for the CORESET, and decode the downlink control channel based on the one or more activated TCI states.

[0164] Additionally, the UE decoding manager 615 may receive a configuration message from a base station, the configuration message indicating that a CORESET is associated with an activated TCI state set; receive a physical downlink control transmission on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to the reception of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating a TCI state for the PDSCH transmission; and decode the PDSCH transmission according to the at least one TCI state.

[0165] Additionally, the UE decoding manager 615 can receive a configuration message from a base station indicating that the CORESET is associated with an activated TCI state set; receive a physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and decode the PDSCH transmission according to the at least one TCI state.

[0166] The UE decoding manager 615 may be an example of aspects of the UE decoding manager 910 described herein. The UE decoding manager 615 or its subcomponents may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the UE decoding manager 615 or its subcomponents may be performed by a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.

[0167] The actions performed by the transcoding manager 615 as described herein may be implemented to achieve one or more potential advantages. For example, allowing a device 605 (e.g., a UE 115) to utilize one or more TCI states instead of only one TCI state may potentially increase the diversity of transmissions as well as increase the reliability of transmissions. Increasing reliability may in turn reduce processing at the device 605. That is, the device 605 may consume less processing power due to the reduction in retransmission operations.

[0168] The UE decoding manager 615 or its subcomponents may be physically located at various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the UE decoding manager 615 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the UE decoding manager 615 or its subcomponents may be combined with one or more other hardware components (including but not limited to input / output (I / O) components, transceivers, network servers, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0169] The transmitter 620 can transmit signals generated by other components of the device 605. In some examples, the transmitter 620 can be co-located with the receiver 610 in a transceiver module. For example, the transmitter 620 can be a reference Fig. 9 Examples of aspects of the described transceiver 920. The transmitter 620 may utilize a single antenna or a collection of antennas.

[0170] Figure 7 A block diagram 700 of a device 705 supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is shown. The device 705 may be an example of aspects of the device 605 or UE 115 as described herein. The device 705 may include a receiver 710, a UE decoding manager 715, and a transmitter 745. The device 705 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0171] The receiver 710 may receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to signaling for configuring downlink transmissions). The information may be passed to other components of the device 705. The receiver 710 may be a reference Fig. 9 Examples of aspects of the described transceiver 920. The receiver 710 may utilize a single antenna or a collection of antennas.

[0172] The UE decoding manager 715 may be an example of aspects of the UE decoding manager 615 as described herein. The UE decoding manager 715 may include a configuration message manager 720, a control message manager 725, a PDCCH receiver 730, a PDSCH state manager 735, and a PDSCH receiver 740. The UE decoding manager 715 may be an example of aspects of the UE decoding manager 910 described herein.

[0173] The configuration message manager 720 may identify that the CORESET for the downlink control channel is associated with the TCI state set. Additionally, the configuration message manager 720 may receive a configuration message from a base station indicating that the CORESET is associated with an activated TCI state set.

[0174] The control message manager 725 may receive a control message from a base station to activate one or more TCI states for the CORESET.

[0175] The PDCCH receiver 730 may decode the downlink control channel based on the one or more activated TCI states. Additionally, the PDCCH receiver 730 may receive a physical downlink control transmission on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for PDSCH transmission. In some cases, the PDCCH receiver 730 may receive a physical downlink control transmission including scheduling information for PDSCH transmission.

[0176] The PDSCH TCI state manager 735 may identify at least one TCI state in the activated TCI state set to apply to the reception of the PDSCH transmission based on the absence of a TCI field indicating a TCI state for the PDSCH transmission included in the scheduling information. Additionally, the PDSCH TCI state manager 735 may identify at least one TCI state in the activated TCI state set to apply to the reception of the PDSCH transmission based on the scheduling offset of the PDSCH transmission being less than a threshold scheduling offset.

[0177] The PDSCH receiver 740 may decode the PDSCH transmission based on the at least one TCI state.

[0178] The transmitter 745 can transmit signals generated by other components of the device 705. In some examples, the transmitter 745 can be co-located with the receiver 710 in a transceiver module. For example, the transmitter 745 can be a reference Fig. 9 Examples of aspects of the described transceiver 920. The transmitter 745 may utilize a single antenna or a collection of antennas.

[0179] Figure 8A block diagram 800 of a UE decoding manager 805 supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is shown. The UE decoding manager 805 may be an example of aspects of the UE decoding manager 615, the UE decoding manager 715, or the UE decoding manager 910 described herein. The UE decoding manager 805 may include a configuration message manager 810, a control message manager 815, a PDCCH receiver 820, a single activated TCI state manager 825, a multiple activated TCI state manager 830, a PDSCH TCI state manager 835, and a PDSCH receiver 840. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0180] The configuration message manager 810 may identify that a CORESET for a downlink control channel is associated with a TCI state set. In some examples, the configuration message manager 810 may receive a configuration message from a base station indicating that a CORESET for the downlink control channel is associated with a TCI state set. In some cases, the configuration message may further indicate that the TCI state set is mapped using FDM mapping, TDM mapping, or space division multiplexing mapping. In some instances, the configuration message further indicates parameters for mapping the TCI state set using at least two of an FDM mapping scheme, a TDM mapping scheme, and a space division multiplexing mapping scheme. In some cases, the configuration message is an RRC message. Additionally, the configuration message manager 810 may receive a configuration message from a base station indicating that a CORESET is associated with an activated TCI state set.

[0181] The control message manager 815 may receive a control message for activating one or more TCI states for the CORESET from a base station. In some examples, receiving the control message may include receiving an indication of the one or more activated TCI states. The indication may include one or more TCI state IDs. Additionally or alternatively, the indication may include one or more indexes associated with the one or more activated TCI states. In some cases, the control message includes a first field configured to indicate a first TCI state, a second field configured to indicate a second TCI state, and a third field configured to indicate whether the first TCI state or the first TCI state and the second TCI state are activated. In some cases, the third field is configured to indicate whether the control message includes the second field. In some instances, the control message includes a dynamic number of fields based on the number of activated TCI states. In some cases, the control message indicates one of an FDM mapping scheme, a TDM mapping scheme, or a space division multiplexing mapping scheme for mapping the one or more activated TCI states. In some examples, the control message includes an indication of a CC group to which the control message belongs. In some instances, the control message is a MAC-CE. In some cases, the control message manager 815 may receive a control message from a base station to activate two TCI states for the CORESET, wherein at least one TCI state to be applied to reception of the PDSCH transmission includes at least one of the two activated TCI states.

[0182] The PDCCH receiver 820 may receive a physical downlink control transmission on the CORESET based on the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission. Alternatively or additionally, the PDCCH receiver 820 may receive a physical downlink control transmission including scheduling information for a PDSCH transmission. In some examples, the PDCCH receiver 820 may decode the downlink control channel based on the one or more activated TCI states. In some instances, the PDCCH receiver 820 may decode the physical downlink control transmission based at least in part on the configuration message and at least one of the two activated TCI states.

[0183] The single activated TCI state manager 825 may determine to activate a single TCI state for the CORESET based on the indication within the control message. In some examples, a first TCI state activated based on the indication is identified, wherein the one or more activated TCI states include the first TCI state.

[0184] The multiple activated TCI state manager 830 may determine to activate two TCI states for the CORESET based on the indication within the control message. In some examples, the multiple activated TCI state manager 830 may identify a first TCI state activated based on the indication. In some cases, a second TCI state activated based on the indication is identified, wherein the one or more activated TCI states include a first TCI state and a second TCI state.

[0185] The PDSCH TCI state manager 835 may identify at least one TCI state in the activated TCI state set to apply to the reception of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission. Additionally or alternatively, the PDSCH TCI state manager 835 may identify at least one TCI state in the activated TCI state set to apply to the reception of the PDSCH transmission based on the scheduling offset of the PDSCH transmission being less than a threshold scheduling offset. In some cases, the identification is based on the scheduling offset of the PDSCH transmission being greater than a threshold scheduling offset. In some cases, the threshold scheduling offset is a time duration for a QCL.

[0186] In some examples, the PDSCH TCI state manager 835 may identify one or more CORESETs associated with a transmission received prior to identifying the CORESET. In some instances, the PDSCH TCI state manager 835 may identify a CORESET associated with two activated TCI states, wherein at least one TCI state to be applied to the reception of the PDSCH transmission includes at least one of the two activated TCI states. In some cases, the PDSCH TCI state manager 835 may determine that the CORESET ID with the lowest value in each CORESET ID from the one or more CORESETs is the CORESET ID that identifies the CORESET. Additionally, the PDSCH TCI state manager 835 may identify one or more CORESETs associated with a transmission received prior to decoding the PDSCH transmission. In some cases, the PDSCH TCI state manager 835 may determine a subset of the one or more CORESETs that excludes the CORESET associated with the activated TCI state set in the one or more CORESETs. In some instances, the PDSCH TCI state manager 835 may identify a CORESET from a subset of the one or more CORESETs that has a CORESET ID with a value that is less than each of the other CORESETs from the subset of the one or more CORESETs, wherein at least one TCI state to be applied to reception of the PDSCH transmission includes a TCI state associated with the identified CORESET that has a CORESET ID with a value that is less than each of the CORESET IDs of the other CORESETs.

[0187] In some examples, the PDSCH TCI state manager 835 may determine that one of two activated TCI states is to be applied to the reception of the PDSCH transmission. For example, the PDSCH TCI state manager 835 may determine that one of two activated TCI states is to be applied to the reception of the PDSCH transmission based on the scheduling information for the PDSCH transmission. In some cases, the PDSCH TCI state manager 835 may identify one of the two activated TCI states to be applied to the reception of the PDSCH transmission based on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within the control message that each indicate one of the two activated TCI states.

[0188] In some examples, the PDSCH TCI state manager 835 may determine (eg, based on scheduling information for the PDSCH transmission) that both of the two activated TCI states are to be applied for reception of the PDSCH transmission.

[0189] The PDSCH receiver 840 may decode the PDSCH transmission based on the at least one TCI state.

[0190] Fig. 9 A diagram of a system 900 including a device 905 supporting signaling for configuring downlink transmissions according to various aspects of the present disclosure is shown. The device 905 may be an example of a device 605, a device 705, or a UE 115 as described herein or include components thereof. The device 905 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a UE transcoding manager 910, an I / O controller 915, a transceiver 920, an antenna 925, a memory 930, and a processor 940. These components may be in electronic communication via one or more buses (e.g., a bus 945).

[0191] The UE decoding manager 910 may identify that a CORESET for a downlink control channel is associated with a TCI state set, receive a control message activating one or more TCI states for the CORESET from a base station, and decode the downlink control channel based on the one or more activated TCI states.

[0192] Additionally, the UE decoding manager 910 may: receive a configuration message from a base station, the configuration message indicating that a CORESET is associated with an activated TCI state set; receive a physical downlink control transmission on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to the reception of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission; and decode the PDSCH transmission according to the at least one TCI state.

[0193] Additionally, the UE decoding manager 910 may: receive a configuration message from a base station indicating that the CORESET is associated with an activated TCI state set; receive a physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and decode the PDSCH transmission according to the at least one TCI state.

[0194] I / O controller 915 can manage input and output signals of device 905. I / O controller 915 can also manage peripheral devices that are not integrated into device 905. In some cases, I / O controller 915 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 915 can utilize an operating system, such as Or another known operating system. In other cases, I / O controller 915 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 915 may be implemented as part of a processor. In some cases, a user may interact with device 905 via I / O controller 915 or via hardware components controlled by I / O controller 915.

[0195] The transceiver 920 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, the transceiver 920 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 920 can also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0196] In some cases, a wireless device may include a single antenna 925. However, in some cases, the device may have more than one antenna 925, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0197] The memory 930 may include random access memory (RAM) and read-only memory (ROM). The memory 930 may store computer-readable, computer-executable code 935 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, the memory 930 may contain a basic input / output system (BIOS), etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0198] The processor 940 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 940 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) so that the device 905 performs various functions (e.g., functions or tasks that support signaling for configuring downlink transmission).

[0199] The code 935 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 935 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 935 may not be directly executed by the processor 940, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0200] Fig.10 A block diagram 1000 of a device 1005 supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is shown. The device 1005 may be an example of aspects of a base station 105 as described herein. The device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1020. The device 1005 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0201] The receiver 1010 may receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to signaling for configuring downlink transmissions). The information may be passed to other components of the device 1005. The receiver 1010 may be a reference Fig.13 Examples of various aspects of the described transceiver 1320. The receiver 1010 may utilize a single antenna or a collection of antennas.

[0202] The communication manager 1015 may identify a configuration indicating that a CORESET for a downlink control channel is associated with a TCI state set; transmit a configuration message indicating the identified configuration to the UE; and transmit a control message activating one or more TCI states for the CORESET to the UE.

[0203] Additionally, the communication manager 1015 may transmit a configuration message to the UE, the configuration message indicating that the CORESET is associated with an activated TCI state set; transmit a physical downlink control transmission to the UE on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission; and transmit the PDSCH transmission according to the at least one TCI state.

[0204] Additionally, the communication manager 1015 may transmit a configuration message to the UE, the configuration message indicating that the CORESET is associated with an activated TCI state set; transmit a physical downlink control transmission to the UE, the physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to transmission of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and transmit the PDSCH transmission according to the at least one TCI state.

[0205] The communication manager 1015 may be an example of aspects of the communication manager 1310 as described herein. The communication manager 1015 or its subcomponents may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1015 or its subcomponents may be performed by a general purpose processor, DSP, ASIC, FPGA or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0206] The communication manager 1015 or its subcomponents may be physically located at various locations, including being distributed such that portions of functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1015 or its subcomponents may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof).

[0207] The transmitter 1020 may transmit signals generated by other components of the device 1005. In some examples, the transmitter 1020 may be co-located with the receiver 1010 in a transceiver module. For example, the transmitter 1020 may be a reference Fig.13 Examples of aspects of the described transceiver 1320. The transmitter 1020 may utilize a single antenna or a collection of antennas.

[0208] Fig.11A block diagram 1100 of a device 1105 supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the device 1005 or base station 105 as described herein. The device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1150. The device 1105 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0209] The receiver 1110 may receive information, such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to signaling for configuring downlink transmissions). The information may be passed to other components of the device 1105. The receiver 1110 may be a reference Fig.13 Examples of various aspects of the described transceiver 1320. The receiver 1110 may utilize a single antenna or a collection of antennas.

[0210] The communication manager 1115 may be an example of aspects of the communication manager 1015 as described herein. The communication manager 1115 may include a configuration identifier 1120, a configuration message transmitter 1125, a control message transmitter 1130, a downlink control message transmitter 1135, a PDSCH TCI state component 1140, and a PDSCH transmitter 1145. The communication manager 1115 may be an example of aspects of the communication manager 1310 as described herein.

[0211] The configuration identifier 1120 may identify a configuration indicating that a CORESET for a downlink control channel is associated with a TCI state set.

[0212] The configuration message transmitter 1125 may transmit a configuration message indicating the identified configuration to the UE. Additionally, the configuration message transmitter 1125 may transmit a configuration message to the UE indicating that the CORESET is associated with an activated TCI state set.

[0213] The control message transmitter 1130 may transmit a control message to the UE to activate one or more TCI states for the CORESET.

[0214] The downlink control message transmitter 1135 may transmit a physical downlink control transmission to the UE on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for PDSCH transmission. In some cases, the downlink control message transmitter 1135 may transmit a physical downlink control transmission to the UE, the physical downlink control transmission including scheduling information for PDSCH transmission.

[0215] The PDSCH TCI state component 1140 may identify at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission. Additionally, the PDSCH TCI state component 1140 may identify at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on the scheduling offset of the PDSCH transmission being less than a threshold scheduling offset.

[0216] The PDSCH transmitter 1145 may transmit the PDSCH transmission according to the at least one TCI state.

[0217] The transmitter 1150 may transmit signals generated by other components of the device 1105. In some examples, the transmitter 1150 may be co-located with the receiver 1110 in a transceiver module. For example, the transmitter 1150 may be a reference Fig.13 Examples of aspects of the described transceiver 1320. The transmitter 1150 may utilize a single antenna or a collection of antennas.

[0218] Fig.12 A block diagram 1200 of a communication manager 1205 supporting signaling for configuring downlink transmissions in accordance with aspects of the present disclosure is shown. The communication manager 1205 may be an example of aspects of the communication manager 1015, the communication manager 1115, or the communication manager 1310 described herein. The communication manager 1205 may include a configuration identifier 1210, a configuration message transmitter 1215, a control message transmitter 1220, a downlink control message transmitter 1225, a PDSCH TCI status component 1230, and a PDSCH transmitter 1235. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0219] The configuration identifier 1210 may identify a configuration indicating that a CORESET for a downlink control channel is associated with a TCI state set.

[0220] The configuration message transmitter 1215 may transmit a configuration message indicating the identified configuration to the UE. In some examples, the configuration message transmitter 1215 may transmit a configuration message to the UE, indicating that the CORESET for the downlink control channel is associated with an activated TCI state set. In some cases, transmitting the configuration message may include transmitting an indication of the one or more activated TCI states. The indication may include a TCI state ID. Additionally, the indication may include one or more indexes associated with the one or more activated TCI states. In some cases, the configuration message further indicates that the TCI state set is mapped using FDM mapping, TDM mapping, or space division multiplexing mapping. In some instances, the configuration message further indicates parameters for mapping the TCI state set using at least two of an FDM mapping scheme, a TDM mapping scheme, and a space division multiplexing mapping scheme. In some examples, the configuration message is an RRC message.

[0221] The control message transmitter 1220 may transmit a control message to the UE to activate one or more TCI states for the CORESET. In some examples, the control message transmitter 1220 may transmit a control message to the UE to activate two TCI states for the CORESET, wherein at least one TCI state to be applied to the reception of the PDSCH transmission includes at least one of the two activated TCI states. In some cases, the control message includes a first field configured to indicate a first TCI state, a second field configured to indicate a second TCI state, and a third field configured to indicate which TCI state of the first TCI state, the second TCI state, or the two TCI states is activated. In some examples, the control message includes a dynamic number of fields based on the number of activated TCI states. In some instances, the control message indicates one of an FDM mapping scheme, a TDM mapping scheme, or a spatial division multiplexing mapping scheme for mapping the one or more activated TCI states. In some cases, the control message is a MAC-CE.

[0222] In some cases, the control message includes an indication that a single TCI state is activated for the CORESET. In some examples, the indication indicates a first TCI state that is activated. In some instances, the one or more activated TCI states include a first TCI state. In some cases, the control message includes an indication that two TCI states are activated for the CORESET. In some examples, the indication indicates that a first TCI state and a second TCI state are activated. In some instances, the one or more activated TCI states include a first TCI state and a second TCI state. In some cases, the control message includes an indication of a CC group to which the control message belongs.

[0223] The downlink control message transmitter 1225 may transmit a downlink control message to the UE via a downlink control channel based on one or more activated TCI states for the CORESET. In some cases, the downlink control message transmitter 1225 may transmit a physical downlink control transmission based on a configuration message and at least one of the two activated TCI states. In some examples, the downlink control message transmitter 1225 may transmit a physical downlink control transmission to the UE on a downlink control channel based on the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission. In some cases, the scheduling information for the PDSCH transmission defines a scheduling offset for the PDSCH transmission that is greater than a threshold scheduling offset. In some instances, the threshold scheduling offset is a time duration for a QCL.

[0224] The PDSCH TCI state component 1230 may identify at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on the absence of a TCI field indicating the TCI state for the PDSCH transmission included in the scheduling information. Additionally, the PDSCH TCI state component 1230 may identify at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on the scheduling offset of the PDSCH transmission being less than a threshold scheduling offset. In some cases, the threshold scheduling offset is a time duration for QCL. In some examples, the PDSCH TCI state component 1230 may identify one of the two activated TCI states to apply to the reception of the PDSCH transmission based on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within the control message each indicating one of the two activated TCI states.

[0225] In some examples, the PDSCH TCI state component 1230 may identify one or more CORESETs associated with a transmission transmitted prior to identifying the CORESET. In some cases, a CORESET associated with two activated TCI states is identified, wherein at least one TCI state to be applied to reception of the PDSCH transmission includes at least one of the two activated TCI states. In some instances, the PDSCH TCI state component 1230 may determine that the CORESET ID having the lowest value from each CORESET ID of the one or more CORESETs is the CORESET ID that identifies the CORESET.

[0226] The PDSCH transmitter 1235 may transmit the PDSCH transmission according to the at least one TCI state. In some examples, the PDSCH transmitter 1235 may transmit the PDSCH transmission according to one of two activated TCI states. In some cases, the PDSCH transmitter 1235 may transmit the PDSCH transmission according to both of the two activated TCI states.

[0227] Fig.13 A diagram of a system 1300 including a device 1305 supporting signaling for configuring downlink transmissions according to various aspects of the present disclosure is shown. The device 1305 may be an example of a device 1005, a device 1105, or a base station 105 as described herein or include components of the above devices. The device 1305 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communication manager 1310, a network communication manager 1315, a transceiver 1320, an antenna 1325, a memory 1330, a processor 1340, and an inter-station communication manager 1345. These components may be in electronic communication via one or more buses (e.g., bus 1350).

[0228] The communication manager 1310 may identify a configuration indicating that a CORESET for a downlink control channel is associated with a TCI state set; transmit a configuration message indicating the identified configuration to the UE; and transmit a control message activating one or more TCI states for the CORESET to the UE.

[0229] Additionally, the communication manager 1310 may transmit a configuration message to the UE, the configuration message indicating that the CORESET is associated with an activated TCI state set; transmit a physical downlink control transmission to the UE on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to transmission of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission; and transmit the PDSCH transmission according to the at least one TCI state.

[0230] Additionally, the communication manager 1310 may also transmit a configuration message to the UE, the configuration message indicating that the CORESET is associated with an activated TCI state set; transmit a physical downlink control transmission to the UE, the physical downlink control transmission including scheduling information for a PDSCH transmission; identify at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and transmit the PDSCH transmission according to the at least one TCI state.

[0231] The network communications manager 1315 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1315 may manage the delivery of data communications for client devices, such as one or more UEs 115.

[0232] The transceiver 1320 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, the transceiver 1320 may represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 1320 may also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0233] In some cases, a wireless device may include a single antenna 1325. However, in some cases, the device may have more than one antenna 1325, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0234] Memory 1330 may include RAM, ROM, or a combination thereof. Memory 1330 may store computer readable code 1335 including instructions that, when executed by a processor (e.g., processor 1340), cause the device to perform various functions described herein. In some cases, memory 1330 may include, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0235] Processor 1340 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, processor 1340 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into processor 1340. Processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) so that device 1305 performs various functions (e.g., functions or tasks that support signaling for configuring downlink transmission).

[0236] The inter-site communication manager 1345 may manage communications with other base stations 105 and may include a controller or scheduler for controlling communications with UE 115 in cooperation with other base stations 105. For example, the inter-site communication manager 1345 may coordinate scheduling of transmissions to UE 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 1345 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0237] The code 1335 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1335 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 1335 may not be directly executed by the processor 1340, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0238] Fig.14 A flow chart illustrating a method 1400 for supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the following functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the following functions.

[0239] At 1405, the UE may identify that a CORESET for a downlink control channel is associated with a TCI state set. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed as described in reference to Figures 6 to 9 The described configuration message manager is executed.

[0240] At 1410, the UE may receive a control message from a base station for activating one or more TCI states for the CORESET. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed as described in reference to Figures 6 to 9 The control message manager described is executed.

[0241] At 1415, the UE may decode the downlink control channel based on the one or more activated TCI states. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be as described in reference to Figures 6 to 9The described PDCCH receiver is performed.

[0242] Fig.15 A flow chart illustrating a method 1500 for supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the following functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the following functions.

[0243] At 1505, the UE may identify that a CORESET for a downlink control channel is associated with a TCI state set. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be performed as described in reference to Figures 6 to 9 The described configuration message manager is executed.

[0244] At 1510, the UE may receive a control message from a base station for activating one or more TCI states for the CORESET. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed as described in reference to Figures 6 to 9 The control message manager described is executed.

[0245] At 1515, the UE may determine to activate a single TCI state for the CORESET based on the indication within the control message. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be performed as described in reference to Figures 6 to 9 The described single is executed by activating the TCI state manager.

[0246] At 1520, the UE may identify a first TCI state activated based on the indication, wherein the one or more activated TCI states include the first TCI state. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be as described in reference to Figures 6 to 9 The described single is executed by activating the TCI state manager.

[0247] At 1525, the UE may decode the downlink control channel based on the one or more activated TCI states. The operations of 1525 may be performed according to the methods described herein. In some examples, aspects of the operations of 1525 may be as described in reference to Figures 6 to 9 The described PDCCH receiver is performed.

[0248] Fig.16 A flow chart illustrating a method 1600 for supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the following functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the following functions.

[0249] At 1605, the UE may identify that a CORESET for a downlink control channel is associated with a TCI state set. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be performed as described in reference to Figures 6 to 9 The described configuration message manager is executed.

[0250] At 1610, the UE may receive a control message from a base station for activating one or more TCI states for the CORESET. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed as described in reference to Figures 6 to 9 The control message manager described is executed.

[0251] At 1615, the UE may determine to activate two TCI states for the CORESET based on the indication within the control message. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be as described in reference to Figures 6 to 9 The multiple described are executed by activating the TCI state manager.

[0252] At 1620, the UE may identify a first TCI state activated based on the indication. The operations of 1620 may be performed according to the methods described herein. In some examples, aspects of the operations of 1620 may be as described in reference to Figures 6 to 9 The multiple described are executed by activating the TCI state manager.

[0253] At 1625, the UE may identify a second TCI state activated based on the indication, wherein the one or more activated TCI states include a first TCI state and a second TCI state. The operations of 1625 may be performed according to the methods described herein. In some examples, aspects of the operations of 1625 may be performed as described in reference to Figures 6 to 9 The multiple described are executed by activating the TCI state manager.

[0254] At 1630, the UE may decode the downlink control channel based on the one or more activated TCI states. The operations of 1630 may be performed according to the methods described herein. In some examples, aspects of the operations of 1630 may be as described in reference to Figures 6 to 9 The described PDCCH receiver is performed.

[0255] Fig.17 A flow chart illustrating a method 1700 for supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 1700 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute an instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0256] At 1705, the base station may identify a configuration indicating that a CORESET for a downlink control channel is associated with a TCI state set. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed as described in reference to Figures 10 to 13 The configuration identifier described is executed.

[0257] At 1710, the base station may transmit a configuration message to the UE indicating the identified configuration. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed as described in reference to Figures 10 to 13 The described configuration message transmitter is executed.

[0258] At 1715, the base station may transmit a control message to the UE to activate one or more TCI states for the CORESET. The operations of 1715 may be performed according to the methods described herein. In some examples, various aspects of the operations of 1715 may be performed as described in reference to Figures 10 to 13 The described control message transmitter is executed.

[0259] Fig.18 1 is a flow chart illustrating a method 1800 for supporting signaling for configuring downlink transmissions according to aspects of the present disclosure. The operations of the method 1800 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1800 may be implemented by a UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the following functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the following functions.

[0260] At 1805, the UE may receive a configuration message from a base station indicating that the CORESET is associated with an activated TCI state set. The operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be performed as described in reference to Figures 6 to 9 The described configuration message manager is executed.

[0261] At 1810, the UE may receive a physical downlink control transmission on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for PDSCH transmission. The operations of 1810 may be performed according to the methods described herein. In some examples, aspects of the operations of 1810 may be performed as described in reference to Figures 6 to 9 The described PDCCH receiver is performed.

[0262] At 1815, the UE may identify at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission. The operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be as described in reference to Figures 6 to 9 The described PDSCH TCI state manager is performed.

[0263] At 1820, the UE may decode the PDSCH transmission according to the at least one TCI state. The operations of 1820 may be performed according to the methods described herein. In some examples, aspects of the operations of 1820 may be as described in reference to Figures 6 to 9 The described PDSCH receiver is performed.

[0264] Fig.19 A flow chart illustrating a method 1900 for supporting signaling for configuring downlink transmissions according to aspects of the present disclosure is shown. The operations of the method 1900 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1900 may be implemented by a UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the following functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the following functions.

[0265] At 1905, the UE may receive a configuration message from a base station indicating that a CORESET is associated with a TCI state set. The operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be performed as described in reference to Figures 6 to 9 The described configuration message manager is executed.

[0266] At 1910, the UE may receive a control message from a base station to activate two TCI states for the CORESET, wherein at least one TCI state to be applied to reception of the PDSCH transmission includes at least one of the two activated TCI states. The operations of 1910 may be performed according to the methods described herein. In some examples, aspects of the operations of 1910 may be performed as described in reference to Figures 6 to 9 The control message manager described is executed.

[0267] At 1915, the UE may receive a physical downlink control transmission on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for PDSCH transmission. The operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be performed as described in reference to Figures 6 to 9 The described PDCCH receiver is performed.

[0268] At 1920, the UE may identify at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on the absence of a TCI field indicating a TCI state for the PDSCH transmission included in the scheduling information. The operation of 1920 may be performed according to the methods described herein. In some examples, aspects of the operation of 1920 may be performed as described in reference to Figures 6 to 9 The described PDSCH TCI state manager is performed.

[0269] At 1925, the UE may decode the PDSCH transmission according to the at least one TCI state. The operations of 1925 may be performed according to the methods described herein. In some examples, aspects of the operations of 1925 may be as described in reference to Figures 6 to 9 The described PDSCH receiver is performed.

[0270] Fig. 20 1 is a flow chart illustrating a method 2000 for supporting signaling for configuring downlink transmissions according to aspects of the present disclosure. The operations of the method 2000 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 2000 may be implemented by a UE 115 or components thereof as described herein. Figures 6 to 9 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the following functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the following functions.

[0271] At 2005, the UE may receive a configuration message from a base station indicating that the CORESET is associated with an activated TCI state set. The operations of 2005 may be performed according to the methods described herein. In some examples, aspects of the operations of 2005 may be performed as described in reference to Figures 6 to 9 The described configuration message manager is executed.

[0272] At 2010, the UE may receive a physical downlink control transmission including scheduling information for a PDSCH transmission. The operations at 2010 may be performed according to the methods described herein. In some examples, aspects of the operations at 2010 may be performed as described in reference to Figures 6 to 9 The described PDCCH receiver is performed.

[0273] At 2015, the UE may identify at least one TCI state in the activated TCI state set to apply to reception of the PDSCH transmission based on the scheduling offset of the PDSCH transmission being less than the threshold scheduling offset. The operation of 2015 may be performed according to the method described herein. In some examples, various aspects of the operation of 2015 may be performed as described in reference to Figures 6 to 9 The described PDSCH TCI state manager is performed.

[0274] At 2020, the UE may decode the PDSCH transmission according to the at least one TCI state. The operations of 2020 may be performed according to the methods described herein. In some examples, aspects of the operations of 2020 may be as described in reference to Figures 6 to 9 The described PDSCH receiver is performed.

[0275] Fig.21 2100 is shown to illustrate a method 2100 for supporting signaling for configuring downlink transmissions according to aspects of the present disclosure. The operations of the method 2100 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2100 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute an instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0276] At 2105, the base station may transmit a configuration message to the UE indicating that the CORESET is associated with the activated TCI state set. The operations of 2105 may be performed according to the methods described herein. In some examples, aspects of the operations of 2105 may be performed as described in reference to Figures 10 to 13 The described configuration message transmitter is executed.

[0277] At 2110, the base station may transmit a physical downlink control transmission to the UE on the CORESET according to the configuration message, the physical downlink control transmission including scheduling information for PDSCH transmission. The operation of 2110 may be performed according to the method described herein. In some examples, various aspects of the operation of 2110 may be performed as described in reference to Figures 10 to 13 The described downlink control message transmitter is performed.

[0278] At 2115, the base station may identify at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on the absence of the TCI field indicating the TCI state for the PDSCH transmission included in the scheduling information. The operation of 2115 may be performed according to the method described herein. In some examples, various aspects of the operation of 2115 may be performed as described in reference to Figures 10 to 13 The described PDSCH TCI state components are performed.

[0279] At 2120, the base station may transmit the PDSCH transmission according to the at least one TCI state. The operations of 2120 may be performed according to the methods described herein. In some examples, aspects of the operations of 2120 may be as described in reference to Figures 10 to 13 The described PDSCH transmitter is performed.

[0280] Fig. 22 2200 is shown to illustrate a method 2200 for supporting signaling for configuring downlink transmissions according to aspects of the present disclosure. The operations of the method 2200 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2200 may be implemented by a base station 105 or components thereof as described herein. Figures 10 to 13 In some examples, the base station may execute an instruction set to control the functional elements of the base station to perform the functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform various aspects of the functions described below.

[0281] At 2205, the base station may transmit a configuration message to the UE indicating that the CORESET is associated with the activated TCI state set. The operations of 2205 may be performed according to the methods described herein. In some examples, aspects of the operations of 2205 may be performed as described in reference to Figures 10 to 13 The described configuration message transmitter is executed.

[0282] At 2210, the base station may transmit a physical downlink control transmission to the UE, the physical downlink control transmission including scheduling information for a PDSCH transmission. The operations of 2210 may be performed according to the methods described herein. In some examples, aspects of the operations of 2210 may be performed as described in reference to Figures 10 to 13The described downlink control message transmitter is performed.

[0283] At 2215, the base station may identify at least one TCI state in the activated TCI state set to apply to the transmission of the PDSCH transmission based on the scheduling offset of the PDSCH transmission being less than the threshold scheduling offset. The operation of 2215 may be performed according to the method described herein. In some examples, various aspects of the operation of 2215 may be performed as described in reference to Figures 10 to 13 The described PDSCH TCI state components are performed.

[0284] At 2220, the base station may transmit the PDSCH transmission according to the at least one TCI state. The operations of 2220 may be performed according to the methods described herein. In some examples, aspects of the operations of 2220 may be as described in reference to Figures 10 to 13 The described PDSCH transmitter is performed.

[0285] It should be noted that the methods described herein describe possible implementations, and that the various operations and steps may be rearranged or otherwise modified and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0286] Various aspects of the described technology are provided. Aspect 1: A method for wireless communication by a UE, comprising: identifying that a CORESET for a downlink control channel is associated with a plurality of TCI states; receiving a control message from a base station to activate one or more TCI states of the plurality of TCI states for the CORESET; and decoding the downlink control channel based at least in part on the one or more activated TCI states.

[0287] Aspect 2: The method of Aspect 1 further includes: receiving a configuration message from a base station, the configuration message indicating that a control resource set used for the downlink control channel is associated with the multiple TCI states.

[0288] Aspect 3: The method of Aspect 1 further includes: determining to activate a single TCI state for the CORESET based at least in part on an indication within the control message; and identifying a first TCI state activated based at least in part on the indication, wherein the one or more activated TCI states include the first TCI state.

[0289] Aspect 4: The method of Aspect 3 further includes: determining to activate two TCI states for the CORESET based at least in part on an indication within the control message; identifying a first TCI state activated based at least in part on the indication; and identifying a second TCI state activated based at least in part on the indication, wherein the one or more activated TCI states include a first TCI state and a second TCI state.

[0290] Aspect 5: The method of any one of Aspects 1 to 4, wherein receiving the control message comprises: receiving an indication of the one or more activated TCI states, wherein the indication comprises one or more TCI state IDs.

[0291] Aspect 6: A method as in any one of Aspects 1 to 5, wherein receiving the control message comprises: receiving an indication of the one or more activated TCI states, wherein the indication comprises one or more indexes associated with the one or more activated TCI states.

[0292] Aspect 7: A method as in any one of Aspects 1 to 6, wherein the control message includes a first field configured to indicate a first TCI state, a second field configured to indicate a second TCI state, and a third field configured to indicate which TCI state is activated, the first TCI state, the second TCI state, or the two TCI states.

[0293] Aspect 8: The method according to any one of Aspects 1 to 7, wherein the third field is configured to indicate whether the control message includes the second field.

[0294] Aspect 9: The method of any one of Aspects 1 to 7, wherein the control message comprises a dynamic number of fields based at least in part on the number of activated TCI states.

[0295] Aspect 10: The method according to any one of Aspects 1 to 9, wherein the configuration message further indicates that the plurality of TCI states are mapped using FDM mapping, TDM mapping, or space division multiplexing mapping.

[0296] Aspect 11: A method as described in any one of Aspects 1 to 10, wherein the configuration message further indicates parameters for mapping the multiple TCI states using at least two of an FDM mapping scheme, a TDM mapping scheme, and a spatial division multiplexing mapping scheme; and the control message indicates one of an FDM mapping scheme, a TDM mapping scheme, or a spatial division multiplexing mapping scheme for mapping the one or more activated TCI states.

[0297] Aspect 12: The method according to any one of Aspects 1 to 11, wherein the control message comprises an indication of a CC group to which the control message belongs.

[0298] Aspect 13: The method according to any one of aspects 1 to 12, wherein the control message is a MAC-CE.

[0299] Aspect 14: The method according to any one of Aspects 1 to 13, wherein the configuration message is an RRC message.

[0300] Aspect 15: A method for wireless communication by a base station, comprising: identifying a configuration indicating that a CORESET used for a downlink control channel is associated with multiple TCI states; transmitting a configuration message indicating the identified configuration to a UE; and transmitting a control message to the UE to activate one or more TCI states of the multiple TCI states for the CORESET.

[0301] Aspect 16: The method of aspect 15 further comprises: transmitting a downlink control message to the UE via a downlink control channel according to one or more activated TCI states for the CORESET.

[0302] Aspect 17: The method of any one of Aspects 15 to 16, wherein the control message includes an indication of activating a single TCI state for the CORESET; the indication indicates a first TCI state that is activated; and the one or more activated TCI states include the first TCI state.

[0303] Aspect 18: A method as in any one of Aspects 15 to 16, wherein the control message includes an indication of activating two TCI states for the CORESET; the indication indicates that a first TCI state and a second TCI state are activated; and the one or more activated TCI states include a first TCI state and a second TCI state.

[0304] Aspect 19: The method of any one of Aspects 15 to 18, wherein transmitting the configuration message comprises: transmitting an indication of the one or more activated TCI states, wherein the indication comprises a TCI state ID.

[0305] Aspect 20: The method of any one of Aspects 15 to 19, wherein transmitting the configuration message comprises: transmitting an indication of the one or more TCI states, wherein the indication comprises one or more indexes associated with the one or more activated TCI states.

[0306] Aspect 21: A method as in any one of Aspects 15 to 20, wherein the control message includes a first field configured to indicate a first TCI state, a second field configured to indicate a second TCI state, and a third field configured to indicate which TCI state is activated, the first TCI state, the second TCI state, or the two TCI states.

[0307] Aspect 22: The method of any one of Aspects 15 to 21, wherein the control message comprises a dynamic number of fields based at least in part on the number of activated TCI states.

[0308] Aspect 23: The method according to any one of Aspects 15 to 22, wherein the configuration message further indicates that the plurality of TCI states are mapped using FDM mapping, TDM mapping or spatial division multiplexing mapping.

[0309] Aspect 24: A method as in any one of Aspects 15 to 23, wherein the configuration message further indicates parameters for mapping the multiple TCI states using at least two of an FDM mapping scheme, a TDM mapping scheme, and a spatial division multiplexing mapping scheme; and the control message indicates one of an FDM mapping scheme, a TDM mapping scheme, or a spatial division multiplexing mapping scheme for mapping the one or more activated TCI states.

[0310] Aspect 25: The method of any one of Aspects 15 to 24, wherein the control message comprises an indication of a CC group to which the control message belongs.

[0311] Aspect 26: The method according to any one of Aspects 15 to 25, wherein the control message is a MAC control element.

[0312] Aspect 27: A method as in any one of Aspects 15 to 26, wherein the configuration message is an RRC message.

[0313] Aspect 28: A method for wireless communication at a UE, comprising: receiving a configuration message from a base station, the configuration message indicating that a CORESET is associated with multiple activated TCI states; receiving a physical downlink control transmission on the CORESET based on the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state among the multiple activated TCI states to apply to reception of the PDSCH transmission based at least in part on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission; and decoding the PDSCH transmission based on the at least one TCI state.

[0314] Aspect 29: The method of aspect 28, wherein the identification is based at least in part on a scheduling offset for the PDSCH transmission being greater than a threshold scheduling offset.

[0315] Aspect 30: The method of Aspect 29, wherein the threshold scheduling offset is a time duration for the QCL.

[0316] Aspect 31: The method of any one of Aspects 28 to 30 further comprises: receiving a control message from a base station to activate two TCI states for the CORESET, wherein at least one TCI state to be applied to the reception of the PDSCH transmission includes at least one of the two activated TCI states.

[0317] Aspect 32: The method of Aspect 31 further comprises: determining to apply one of the two activated TCI states to the reception of the PDSCH transmission based at least in part on the scheduling information for the PDSCH transmission.

[0318] Aspect 33: The method of Aspect 32 further includes: identifying one of the two activated TCI states to be applied to the reception of PDSCH transmission based at least in part on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within the control message that each indicate one of the two activated TCI states.

[0319] Aspect 34: The method of aspect 35 further comprises: determining to apply one of the two activated TCI states to the reception of the PDSCH transmission based at least in part on the scheduling information for the PDSCH transmission.

[0320] Aspect 36: The method as described in any one of Aspects 37 to 38 further includes: decoding the physical downlink control transmission based at least in part on the configuration message and at least one TCI state of the two activated TCI states.

[0321] Aspect 39: A method for wireless communication at a UE, comprising: receiving a configuration message from a base station, the configuration message indicating that a CORESET is associated with multiple activated TCI states; receiving a physical downlink control transmission, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state among the multiple activated TCI states to apply to reception of the PDSCH transmission based at least in part on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and decoding the PDSCH transmission based on the at least one TCI state.

[0322] Aspect 40: The method of Aspect 39, wherein the threshold scheduling offset is a time duration for the QCL.

[0323] Aspect 41: A method as in any one of Aspects 39 to 40, further comprising: identifying one or more CORESETs, each CORESET associated with a transmission received before decoding the PDSCH transmission; determining a subset of the one or more CORESETs, the subset excluding CORESETs in the one or more CORESETs that are associated with multiple activated TCI states; and identifying a CORESET from the subset of the one or more CORESETs, the CORESET having a CORESET ID value that is less than each CORESET ID of other CORESETs from the subset of the one or more CORESETs, wherein at least one TCI state to be applied to the reception of the PDSCH transmission includes a TCI state associated with the identified CORESET, the identified CORESET having a CORESET ID value that is less than each CORESET ID of other CORESETs.

[0324] Aspect 42: The method of any one of Aspects 39 to 43, further comprising: identifying a CORESET associated with two activated TCI states, wherein at least one TCI state to be applied to reception of the PDSCH transmission includes at least one of the two activated TCI states.

[0325] Aspect 44: A method as in Aspect 45, wherein identifying the CORESET further comprises: identifying one or more CORESETs associated with a transmission received before identifying the CORESET; and determining that the CORESET ID with the lowest value among each CORESET ID from the one or more CORESETs is the CORESET ID identifying the CORESET.

[0326] Aspect 46: The method of any one of Aspects 47 to 48, further comprising: determining to apply one of the two activated TCI states to the reception of the PDSCH transmission.

[0327] Aspect 49: The method of Aspect 46 further includes: identifying one of the two activated TCI states to be applied to the reception of PDSCH transmission based at least in part on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within the control message that each indicate one of the two activated TCI states.

[0328] Aspect 50: The method of any one of Aspects 51 to 52, further comprising: determining to apply both of the two activated TCI states to the reception of the PDSCH transmission.

[0329] Aspect 53: The method as described in any one of Aspects 54 to 50 further includes: decoding the physical downlink control transmission based at least in part on the configuration message and at least one TCI state of the two activated TCI states.

[0330] Aspect 55: A method for performing wireless communications at a base station, comprising: transmitting a configuration message to a UE, the configuration message indicating that a CORESET is associated with multiple activated TCI states; transmitting a physical downlink control transmission to the UE on the CORESET based on the configuration message, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state among the multiple activated TCI states to apply to the transmission of the PDSCH transmission based at least in part on the absence of a TCI field included in the scheduling information indicating the TCI state for the PDSCH transmission; and transmitting the PDSCH transmission based on the at least one TCI state.

[0331] Aspect 56: The method of aspect 55, wherein the scheduling information for the PDSCH transmission defines a scheduling offset for the PDSCH transmission that is greater than a threshold scheduling offset.

[0332] Aspect 57: The method of Aspect 56, wherein the threshold scheduling offset is a time duration for the QCL.

[0333] Aspect 58: The method of any one of Aspects 55 to 57 further comprises: transmitting a control message to the UE to activate two TCI states for the CORESET, wherein at least one TCI state to be applied to the reception of the PDSCH transmission includes at least one of the two activated TCI states.

[0334] Aspect 59: The method of Aspect 58, wherein transmitting the PDSCH transmission further comprises: transmitting the PDSCH transmission according to one of two activated TCI states.

[0335] Aspect 60: The method of Aspect 59 further includes: identifying one of the two activated TCI states to be applied to the reception of PDSCH transmission based at least in part on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within the control message that each indicates one of the two activated TCI states.

[0336] Aspect 61: The method of aspect 58, wherein transmitting the PDSCH transmission further comprises: transmitting the PDSCH transmission according to two of two activated TCI states.

[0337] Aspect 62: The method of any one of Aspects 58 to 61, further comprising: transmitting the physical downlink control transmission based at least in part on the configuration message and at least one TCI state of the two activated TCI states.

[0338] Aspect 63: A method for wireless communication at a base station, comprising: transmitting a configuration message to a UE, the configuration message indicating that a CORESET is associated with multiple activated TCI states; transmitting a physical downlink control transmission to the UE, the physical downlink control transmission including scheduling information for a PDSCH transmission; identifying at least one TCI state among the multiple activated TCI states to apply to the transmission of the PDSCH transmission based at least in part on a scheduling offset of the PDSCH transmission being less than a threshold scheduling offset; and transmitting the PDSCH transmission according to the at least one TCI state.

[0339] Aspect 64: The method of Aspect 63, wherein the threshold scheduling offset is a time duration for the QCL.

[0340] Aspect 65: The method as described in any one of Aspects 63 to 64 further comprises: identifying a CORESET associated with two activated TCI states, wherein at least one TCI state to be applied to the reception of the PDSCH transmission includes at least one of the two activated TCI states.

[0341] Aspect 66: A method as in Aspect 65, wherein identifying the CORESET further comprises: identifying one or more CORESETs associated with a transmission transmitted before identifying the CORESET; and determining that the CORESET ID with the lowest value from each CORESET ID of the one or more CORESETs is the CORESET ID that identifies the CORESET.

[0342] Aspect 67: The method of any one of Aspects 65 to 66, wherein transmitting the PDSCH transmission further comprises: transmitting the PDSCH transmission according to one of two activated TCI states.

[0343] Aspect 68: The method of Aspect 67 further includes: identifying one of the two activated TCI states to be applied to the reception of PDSCH transmission based at least in part on the relative value of the TCI state ID for each of the two activated TCI states or the relative position of two fields within the control message that each indicates one of the two activated TCI states.

[0344] Aspect 69: The method of any one of Aspects 65 to 70, wherein transmitting the PDSCH transmission further comprises: transmitting the PDSCH transmission according to two of two activated TCI states.

[0345] Aspect 71: The method of any one of Aspects 65 to 69, further comprising: transmitting the physical downlink control transmission based at least in part on the configuration message and at least one TCI state of the two activated TCI states.

[0346] Aspect 72: An apparatus for wireless communication by a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as in any one of Aspects 1 to 14.

[0347] Aspect 73: An apparatus for wireless communication by a UE, comprising at least one device for performing the method as described in any one of aspects 1 to 14.

[0348] Aspect 74: A non-transitory computer-readable medium storing code for wireless communication by a UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 1 to 14.

[0349] Aspect 75: An apparatus for wireless communication by a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any one of Aspects 15 to 27.

[0350] Aspect 76: An apparatus for wireless communication by a base station, comprising at least one means for performing the method of any one of Aspects 15 to 27.

[0351] Aspect 77: A non-transitory computer-readable medium storing code for wireless communication by a base station, the code comprising instructions executable by a processor to perform the method of any one of aspects 15 to 27.

[0352] Aspect 78: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as in any one of Aspects 28 to 36.

[0353] Aspect 79: An apparatus for wireless communication at a UE, comprising at least one means for performing the method of any one of Aspects 28 to 36.

[0354] Aspect 80: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 28 to 36.

[0355] Aspect 81: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as in any one of Aspects 39 to 53.

[0356] Aspect 82: An apparatus for wireless communication at a UE, comprising at least one means for performing the method of any one of Aspects 39 to 53.

[0357] Aspect 83: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method of any one of aspects 39 to 53.

[0358] Aspect 84: An apparatus for performing wireless communications at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any one of Aspects 55 to 62.

[0359] Aspect 85: An apparatus for wireless communication at a base station, comprising at least one means for performing the method of any one of Aspects 55 to 62.

[0360] Aspect 86: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform the method of any one of aspects 55 to 62.

[0361] Aspect 87: An apparatus for performing wireless communications at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any one of Aspects 63 to 71.

[0362] Aspect 88: An apparatus for wireless communication at a base station, comprising at least one means for performing the method of any one of Aspects 63 to 71.

[0363] Aspect 89: A non-transitory computer-readable medium storing code for wireless communication at a base station, the code comprising instructions executable by a processor to perform the method of any one of aspects 63 to 71.

[0364] Aspects 1 to 76 (or aspects of aspects 1 to 76) may be combined with aspects or embodiments disclosed in other implementations.

[0365] The technology described herein can be used in various wireless communication systems, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA) and other systems. CDMA systems can implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA). CDMA2000 covers IS-2000, IS-95 and IS-856 standards. IS-2000 versions are generally referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is generally referred to as CDMA2000 1xEV-DO, High Rate Packet Data (HRPD), etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. TDMA systems can implement radio technologies such as Global System for Mobile Communications (GSM).

[0366] OFDMA systems can implement radio technologies such as Ultra Mobile Broadband (UMB), Evolved UTRA (E-UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE, LTE-A, and LTE-A Pro are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, LTE-A Pro, NR, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for systems and radio technologies mentioned herein as well as for other systems and radio technologies. Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to applications other than LTE, LTE-A, LTE-A Pro, or NR applications.

[0367] A macro cell generally covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs with service subscriptions to a network provider. A small cell may be associated with a lower power base station (compared to a macro cell), and the small cell may operate in the same or different (e.g., licensed or unlicensed) frequency band as the macro cell. According to various examples, a small cell may include a pico cell, a femto cell, and a micro cell. A pico cell, for example, may cover a smaller geographic area and may allow unrestricted access by UEs with service subscriptions to a network provider. A femto cell may also cover a smaller geographic area (e.g., a residence) and may provide restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in the residence, etc.). An eNB for a macro cell may be referred to as a macro eNB. An eNB for a small cell may be referred to as a small cell eNB, a pico eNB, a femto eNB, or a home eNB. An eNB may support one or more (eg, two, three, four, etc.) cells and may also support communications using one or more CCs.

[0368] The wireless communication systems described herein may support synchronous or asynchronous operation. For synchronous operation, each base station may have similar frame timing, and transmissions from different base stations may be roughly aligned in time. For asynchronous operation, each base station may have different frame timing, and transmissions from different base stations may not be aligned in time. The techniques described herein may be used for synchronous or asynchronous operation.

[0369] The information and signals described herein may be represented using any of a variety of different techniques and technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout this description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0370] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed with a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0371] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted by a computer-readable medium as one or more instructions or codes. Other examples and implementations fall within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0372] Computer-readable medium includes both non-transient computer storage medium and communication medium, and it includes any medium that facilitates computer program to transfer from one place to another place.Non-transient storage medium can be any available medium that can be accessed by general or special-purpose computer.As an example and not limitation, non-transient computer-readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disk (CD) ROM or other optical disk storage, disk storage or other magnetic storage device, or can be used to carry or store instruction or data structure form of desired program code means and can be accessed by general or special-purpose computer or general or special-purpose processor any other non-transient medium.Similarly, any connection is also properly referred to as computer-readable medium.For example, if software is transmitted from website, server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then the coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are just included in the definition of medium. Disk and disc as used herein include CDs, laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer-readable media.

[0373] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Similarly, as used herein, the phrase "based on" should not be interpreted as referring to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0374] In the accompanying drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes between similar components. If only the first reference number is used in the specification, the description may apply to any of the similar components having the same first reference number regardless of the second reference number, or other subsequent reference numbers.

[0375] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or that fall within the scope of the claims. The term "exemplary" as used herein means "used as an example, instance, or illustration" and does not mean "better than" or "better than other examples." This detailed description includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0376] The description herein is provided to enable those skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the universal principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication by a user equipment (UE), comprising: Identifying that a control resource set for a downlink control channel is associated with a plurality of transmission configuration indicator (TCI) states; receiving, from a network device, control information for activating one or more TCI states of the plurality of TCI states for the control resource set, the plurality of TCI states comprising at least a first TCI state and a second TCI state, wherein the control information comprises a first indication of the first TCI state and a second indication as to whether the first TCI state is activated or whether the first TCI state and the second TCI state are activated; as well as The downlink control channel is decoded based at least in part on one or more activated TCI states.

2. The method of claim 1, further comprising: A configuration message is received from the network device, the configuration message indicating that the set of control resources for the downlink control channel is associated with the plurality of TCI states.

3. The method of claim 1, further comprising: determining to activate a single TCI state for the set of control resources based at least in part on the control information including the second indication that the first TCI state is activated; as well as Based at least in part on the second indication, it is identified that the first TCI state is activated, wherein the one or more activated TCI states include the first TCI state.

4. The method of claim 1, further comprising: determining to activate two TCI states for the control resource set based at least in part on the control information including the second indication that the first TCI state and the second TCI state are activated; identifying that the first TCI state is activated based at least in part on the second indication; and Based at least in part on the second indication, it is identified that the second TCI state is activated, wherein the one or more activated TCI states include the first TCI state and the second TCI state.

5. The method of claim 1, wherein the first indication comprises a TCI status identifier.

6. The method of claim 1, wherein the first indication comprises an index associated with the first TCI state.

7. The method of claim 1, wherein the control information comprises a first field comprising the first indication, a second field comprising a third indication of the second TCI state, and a third field comprising the second indication.

8. The method of claim 7, wherein the third field is configured to indicate whether the control information includes the second field.

9. The method of claim 1, wherein the control information comprises a dynamic number of fields based at least in part on a number of activated TCI states.

10. The method of claim 2, wherein the configuration message further indicates that the plurality of TCI states are mapped using frequency division multiplexing mapping, time division multiplexing mapping, or space division multiplexing mapping.

11. The method of claim 2, wherein: The configuration message further indicates parameters for mapping the plurality of TCI states using at least two of a frequency division multiplexing mapping scheme, a time division multiplexing mapping scheme, and a space division multiplexing mapping scheme; and The control information indicates one of the frequency division multiplexing mapping scheme, the time division multiplexing mapping scheme, or the space division multiplexing mapping scheme for mapping the one or more activated TCI states.

12. The method of claim 1, wherein the control information includes an indication of a component carrier group to which the control information belongs.

13. The method of claim 1, wherein the control information is a medium access control (MAC) control element.

14. The method of claim 2, wherein the configuration message is a radio resource control message.

15. An apparatus for wireless communication by a user equipment (UE), comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to: receiving a configuration message from a network device, the configuration message indicating that a set of control resources for a downlink control channel is associated with a plurality of transmission configuration indicator (TCI) states; receiving, from the network device, control information for activating one or more TCI states of the plurality of TCI states for the control resource set, the plurality of TCI states comprising at least a first TCI state and a second TCI state, wherein the control information comprises a first indication of the first TCI state and a second indication as to whether the first TCI state is activated or whether the first TCI state and the second TCI state are activated; as well as The downlink control channel is decoded based at least in part on the configuration message and one or more activated TCI states.

16. The apparatus of claim 15, wherein the instructions are further executable by the processor to cause the apparatus to: determining to activate a single TCI state for the set of control resources based at least in part on the control information including the second indication that the first TCI state is activated; and Based at least in part on the second indication, it is identified that the first TCI state is activated, wherein the one or more activated TCI states include the first TCI state.

17. The apparatus of claim 15, wherein the instructions are further executable by the processor to cause the apparatus to: determining to activate two TCI states for the control resource set based at least in part on the control information including the second indication that the first TCI state and the second TCI state are activated; identifying that the first TCI state is activated based at least in part on the second indication; and Based at least in part on the second indication, it is identified that the second TCI state is activated, wherein the one or more activated TCI states include the first TCI state and the second TCI state.

18. The apparatus of claim 15, wherein the first indication comprises a TCI status flag.

19. The apparatus of claim 15, wherein the first indication comprises an index associated with the first TCI state.

20. The apparatus of claim 15, wherein the control information comprises a first field comprising the first indication, a second field comprising a third indication of the second TCI state, and a third field comprising the second indication.

21. The apparatus of claim 20, wherein the third field is configured to indicate whether the control information includes the second field.

22. The apparatus of claim 15, wherein the control information comprises a dynamic number of fields based at least in part on a number of activated TCI states.

23. The apparatus of claim 15, wherein the configuration message further indicates that the plurality of TCI states are mapped using frequency division multiplexing mapping, time division multiplexing mapping, or space division multiplexing mapping.

24. The apparatus of claim 15, wherein: The configuration message further indicates parameters for mapping the plurality of TCI states using at least two of a frequency division multiplexing mapping scheme, a time division multiplexing mapping scheme, and a space division multiplexing mapping scheme; and The control information indicates one of the frequency division multiplexing mapping scheme, the time division multiplexing mapping scheme, or the space division multiplexing mapping scheme for mapping the one or more activated TCI states.

25. The apparatus of claim 15, wherein the control information comprises an indication of a component carrier group to which the control information belongs.

26. The apparatus of claim 15, wherein the control information is a medium access control (MAC) control element.

27. The apparatus of claim 15, wherein the configuration message is a radio resource control message.

28. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to: receiving a configuration message from a network device, the configuration message indicating that a set of control resources for a downlink control channel is associated with a plurality of transmission configuration indicator (TCI) states; receiving, from the network device, control information for activating one or more TCI states of the plurality of TCI states for the control resource set, the plurality of TCI states comprising at least a first TCI state and a second TCI state, wherein the control information comprises a first indication of the first TCI state and a second indication as to whether the first TCI state is activated or whether the first TCI state and the second TCI state are activated; as well as The downlink control channel is decoded based at least in part on the configuration message and one or more activated TCI states.

29. The non-transitory computer readable medium of claim 28, wherein the instructions are further executable by the processor to: determining to activate a single TCI state for the set of control resources based at least in part on the control information including the second indication that the first TCI state is activated; and Based at least in part on the second indication, it is identified that the first TCI state is activated, wherein the one or more activated TCI states include the first TCI state.

30. An apparatus for wireless communication by a user equipment (UE), comprising: means for receiving a configuration message from a network device, the configuration message indicating that a set of control resources for a downlink control channel is associated with a plurality of transmission configuration indicator (TCI) states; means for receiving, from the network device, control information for activating one or more TCI states of the plurality of TCI states for the control resource set, the plurality of TCI states comprising at least a first TCI state and a second TCI state, wherein the control information comprises a first indication of the first TCI state and a second indication as to whether the first TCI state is activated or whether the first TCI state and the second TCI state are activated; as well as Means for decoding the downlink control channel based at least in part on the configuration message and one or more activated TCI states.

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