Dynamic single frequency network area with listen-before-talk uncertainty

Abstract

Methods, systems, and apparatus for wireless communications are described. A base station may determine a transmit beam configuration for transmitting multicast data to a user equipment (UE) in a joint transmission using a set of transmit / receive points (TRPs) based on results of a listen-before-talk (LBT) procedure performed at the TRPs. In some examples, the base station may indicate to the UE that the UE is to determine a UE beam configuration and a quasi-co-location (QCL) relationship associated with a TRP for receiving multicast data based on signaling from the TRPs. In some examples, the base station may transmit multicast data from a first TRP (e.g., a serving cell) during a first transmission opportunity (TxOP), and the UE may determine a QCL relationship for the set of TRPs. During a second TxOP, the base station may transmit the multicast data in a joint transmission from the set of TRPs.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 63 / 008,211, filed by ZHANG et al. on April 10, 2020, entitled “DYNAMIC SINGLEFREQUENCY NETWORK AREA WITH LISTEN BEFORE TALK UNCERTAINTY,” and U.S. Patent Application No. 17 / 063,638, filed by ZHANG et al. on October 5, 2020, entitled “DYNAMIC SINGLE FREQUENCY NETWORK AREA WITH LISTEN BEFORE TALK UNCERTAINTY,” 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 dynamic single frequency network areas with listen-before-talk uncertainty. 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] A wireless multiple access communication system can support multicast communication with UEs, wherein the system transmits information to multiple UEs simultaneously. The system can transmit information using base stations associated with the system.

[0006] Overview

[0007] The described technology relates to improved methods, systems, devices, and apparatuses for supporting dynamic single frequency network areas with listen-before-talk uncertainty. In general, the described technology provides a method that enables a base station to determine a transmit beam configuration for transmitting multicast information to a user equipment (UE) in a joint transmission using a set of transmit / receive points (TRPs) in an unlicensed radio frequency spectrum band. The base station can determine the transmit beam configuration based on the result of a listen-before-talk (LBT) procedure performed at the TRP. In some examples, the base station can indicate to the UE that the UE is to determine the UE beam configuration for receiving the multicast transmission. The base station can transmit the multicast transmission, together with signaling that the UE can use to determine the UE beam configuration. In some examples, the UE can additionally determine a quasi-co-location (QCL) relationship associated with the TRP based on the received signaling. In some examples, the base station can transmit multicast data from a first TRP (e.g., a serving cell) during a first transmission opportunity (TxOP), and the UE can determine the QCL relationship for the TRP set. During a second TxOP, the base station can transmit multicast data from the TRP set in a joint transmission.

[0008] A method of wireless communication at a UE is described. The method may include: receiving an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmit-receive points during a time slot; receiving a multicast data signal and signaling for determining the UE beam configuration from the transmit-receive set during the time slot; determining the UE beam configuration for the time slot based on the received indication and the received signaling; and decoding the received multicast data signal based on the determined UE beam configuration.

[0009] 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 may be executed by the processor so that the apparatus: receives an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmit-receive points during a time slot; receives a multicast data signal and signaling for determining the UE beam configuration from the transmit-receive set during the time slot; determines the UE beam configuration for the time slot based on the received indication and the received signaling; and decodes the received multicast data signal based on the determined UE beam configuration.

[0010] Another apparatus for wireless communication at a UE is described. The apparatus may include means for: receiving an indication that the UE is to determine a UE beam configuration to be used for receiving a multicast data signal from a set of transmit-receive points during a time slot; receiving a multicast data signal and signaling for determining the UE beam configuration from the transmit-receive set during the time slot; determining the UE beam configuration for the time slot based on the received indication and the received signaling; and decoding the received multicast data signal based on the determined UE beam configuration.

[0011] 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 to perform the following operations: receiving an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmit-receive points during a time slot; receiving a multicast data signal and signaling for determining the UE beam configuration from the transmit-receive set during the time slot; determining the UE beam configuration for the time slot based on the received indication and the received signaling; and decoding the received multicast data signal based on the determined UE beam configuration.

[0012] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for the following actions: determining that the multicast data signal may come from the transmission reception point set based on received signaling that can be used to determine the UE beam configuration; and identifying a candidate beam configuration set associated with the transmission reception point set, wherein the UE beam configuration for the time slot may be determined based on a combination of the identified candidate beam configuration sets.

[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: receiving a configuration identifying a set of candidate beam configurations, each candidate beam configuration in the set of candidate beam configurations being associated with a transmit-receive point in a transmit-receive point set.

[0014] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the received signaling includes an active signal set, each active signal in the active signal set corresponds to a transmit-receive point in the transmit-receive point set.

[0015] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for: identifying the presence of an additional reference signal from the set of transmission reception points based on the received indication; and receiving the additional reference signal in the time slot based on the identification, wherein the UE beam configuration for the time slot can be determined based on the determined UE beam configuration and the received additional reference signal.

[0016] Some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving a configuration identifying resources for a UE to use for receiving an additional reference signal.

[0017] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the additional reference signal includes a demodulation reference signal.

[0018] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the additional reference signal may be received in a first one or more symbol periods of the time slot that precedes a second one or more symbol periods of the time slot associated with the received multicast data signal.

[0019] 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 a quasi-co-location relationship associated with a received multicast data signal based on received signaling, wherein the received multicast data signal may be decoded based on the determined quasi-co-location relationship.

[0020] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the indication may be received in a control channel transmission.

[0021] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, a UE beam configuration includes a transmission configuration indication state.

[0022] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the multicast data signal may be received on a downlink shared channel.

[0023] A method of wireless communication at a base station is described. The method may include: performing a listen-before-talk procedure to determine that a set of transmit-receive points are available to transmit a multicast data signal to a UE during a time slot; transmitting an indication to the UE that the UE is to determine a UE beam configuration to be used to receive the multicast data signal from the set of transmit-receive points during the time slot; and transmitting the multicast data signal and signaling to be used by the UE to determine the UE beam configuration from the transmit-receive set during the time slot.

[0024] 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 may be executed by the processor to cause the apparatus to: perform a listen-before-talk procedure to determine that a set of transmit-receive points are available for transmitting a multicast data signal to a UE during a time slot; transmit an indication to the UE that the UE is to determine a UE beam configuration to be used for receiving the multicast data signal from the set of transmit-receive points during the time slot; and transmit a multicast data signal from the transmit-receive set during the time slot and signaling to be used by the UE to determine the UE beam configuration.

[0025] Another apparatus for wireless communication at a base station is described. The apparatus may include means for performing a listen-before-talk procedure to determine that a set of transmit-receive points are available for transmitting a multicast data signal to a UE during a time slot; transmitting an indication to the UE that the UE is to determine a UE beam configuration to be used for receiving the multicast data signal from the set of transmit-receive points during the time slot; and transmitting the multicast data signal and signaling to be used by the UE to determine the UE beam configuration from the transmit-receive set during the time slot.

[0026] 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 to perform the following operations: perform a listen-before-talk procedure to determine that a set of transmit-receive points are available for transmitting a multicast data signal to a UE during a time slot; transmit an indication to the UE that the UE is to determine a UE beam configuration to be used for receiving the multicast data signal from the set of transmit-receive points during the time slot; and transmit the multicast data signal from the transmit-receive set during the time slot and signaling to be used by the UE to determine the UE beam configuration.

[0027] 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 configuration of a set of candidate beam configurations for the UE to use to determine the UE beam configuration, each candidate beam configuration in the set of candidate beam configurations being associated with a transmit-receive point in the transmit-receive point set.

[0028] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the transmitted signaling includes an active signal set, each active signal in the active signal set corresponds to a transmit-receive point in the transmit-receive point set.

[0029] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for: transmitting an indication of a configuration of resources for the UE to use to receive additional reference signals from the set of transmit-receive points; and transmitting an additional reference signal in the time slot based on the transmitted indication, wherein the transmitted signaling includes the additional reference signal.

[0030] In some examples of the methods, apparatuses (devices), and non-transitory computer-readable media described herein, the additional reference signal includes a demodulation reference signal.

[0031] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the additional reference signal may be transmitted in a first one or more symbol periods of the time slot that precedes a second one or more symbol periods of the time slot associated with the transmitted multicast data signal.

[0032] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the indication may be transmitted in a control channel transmission.

[0033] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, a UE beam configuration includes a transmission configuration indication state.

[0034] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, the multicast data signal may be transmitted on a downlink shared channel.

[0035] A method for wireless communication at a base station is described. The method may include: performing a listen-before-talk procedure to determine that a set of transmit-receive points are available for transmitting a first multicast data signal for a set of UEs during a first time slot and a second time slot; transmitting to the set of UEs an indication of a first beam configuration for one or more transmit-receive points in the set of transmit-receive points based on the result of the performed listen-before-talk procedure; and transmitting the first multicast data signal to the set of UEs using a first transmit-receive point in the set of transmit-receive points according to the first beam configuration during the first time slot; the method may further include: transmitting to the set of UEs an indication of a second beam configuration for a set of transmit-receive points available for transmitting the first multicast data signal to the set of UEs based on the result of the performed listen-before-talk procedure; and transmitting a second multicast data signal to the set of UEs using the set of transmit-receive points according to the second beam configuration for the set of transmit-receive points during the second time slot.

[0036] 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 may be executed by the processor so that the apparatus: performs a listen-before-talk procedure to determine that a set of transmission-reception points are available for transmitting a first multicast data signal for a set of UEs during a first time slot and a second time slot; transmits to the set of UEs an indication of a first beam configuration for one or more transmission-reception points in the set of transmission-reception points based on the result of the performed listen-before-talk procedure; and transmits the first multicast data signal to the set of UEs using a first transmission-reception point in the set of transmission-reception points according to the first beam configuration during the first time slot. The instructions are further executable by the processor so that the apparatus: transmits to the set of UEs an indication of a second beam configuration for a set of transmission-reception points that are available for transmitting the first multicast data signal to the set of UEs based on the result of the performed listen-before-talk procedure; and transmits the second multicast data signal to the set of UEs using the set of transmission-reception points according to the second beam configuration for the set of transmission-reception points during the second time slot.

[0037] Another apparatus for wireless communication at a base station is described. The apparatus may include means for performing a listen-before-talk procedure to determine that a set of transmit-receive points are available for transmitting a first multicast data signal for a set of UEs during a first time slot and a second time slot; transmitting to the set of UEs an indication of a first beam configuration for one or more transmit-receive points in the set of transmit-receive points based on a result of the performed listen-before-talk procedure; and transmitting the first multicast data signal to the set of UEs using a first transmit-receive point in the set of transmit-receive points according to the first beam configuration during the first time slot. The apparatus may further include means for performing: transmitting to the set of UEs an indication of a second beam configuration for a set of transmit-receive points available for transmitting the first multicast data signal to the set of UEs based on a result of the performed listen-before-talk procedure; and transmitting a second multicast data signal to the set of UEs using the set of transmit-receive points according to the second beam configuration for the set of transmit-receive points during the second time slot.

[0038] 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 to perform the following operations: perform a listen-before-talk procedure to determine that a set of transmit-receive points are available for transmitting a first multicast data signal for a set of UEs during a first time slot and a second time slot; transmit an indication of a first beam configuration for one or more transmit-receive points in the set of transmit-receive points to the set of UEs based on the result of the performed listen-before-talk procedure; and transmit the first multicast data signal to the set of UEs using a first transmit-receive point in the set of transmit-receive points according to the first beam configuration during the first time slot. The code may further include instructions executable by the processor to perform the following operations: transmit an indication of a second beam configuration for a set of transmit-receive points available for transmitting the first multicast data signal to the set of UEs based on the result of the performed listen-before-talk procedure; and transmit a second multicast data signal to the set of UEs using the set of transmit-receive points according to the second beam configuration for the set of transmit-receive points during the second time slot.

[0039] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first transmission reception point includes the one or more transmission reception points in the set of transmission reception points, and the first beam configuration can be used for the first transmission reception point.

[0040] 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: determining to use one or more remaining transmission reception points in the set of transmission reception points to transmit a unicast data signal during a first time slot.

[0041] 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: suppressing transmission of a first multicast data signal to the set of UEs using one or more remaining transmission reception points in the set of transmission reception points during a first time slot based on a result of the executed listen-before-talk procedure.

[0042] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, a first transmission reception point comprises a serving cell for the set of UEs, and the remaining one or more transmission reception points comprise non-serving cells for the set of UEs.

[0043] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, a first beam configuration may be consistent with a transmit-receive point through a listen-before-talk procedure performed for a first time slot, and a second beam configuration may be consistent with a transmit-receive point through a listen-before-talk procedure performed for a second time slot.

[0044] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the one or more transmit-receive points in the transmit-receive point set include the transmit-receive point set, and a first beam configuration may be used for the transmit-receive point set.

[0045] Some examples of the methods, apparatus (devices) and non-transitory computer-readable media described herein may further include operations, features, apparatuses or instructions for the following actions: suppressing transmission on the remaining one or more transmission-reception points in the transmission-reception point set during the first time slot based on the results of the executed listen-before-talk procedure.

[0046] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, a first beam configuration may be inconsistent with a transmit-receive point through a listen-before-talk procedure performed for a first time slot, and a second beam configuration is consistent with a transmit-receive point through a listen-before-talk procedure performed for a second time slot.

[0047] In some examples of the methods, apparatus (devices), and non-transitory computer-readable media described herein, an indication of a first beam configuration may be transmitted in a first downlink control information message in a first time slot, and an indication of a second beam configuration may be transmitted in a second downlink control information message in a second time slot.

[0048] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first beam configuration includes a first transmission configuration indicating a state, and the second beam configuration includes a second transmission configuration indicating a state. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 and Figure 2 An example of a wireless communication system supporting dynamic single frequency network regions with listen-before-talk ambiguity in accordance with aspects of the present disclosure is illustrated.

[0051] Figures 3 to 6 An example of a transmission scheme supporting dynamic single frequency network areas with listen-before-talk uncertainty in accordance with aspects of the present disclosure is illustrated.

[0052] Figure 7 and Figure 8 An example of a process flow supporting dynamic single frequency network zones with listen-before-talk uncertainty in accordance with aspects of the present disclosure is illustrated.

[0053] Fig. 9 and Fig.10 A block diagram of a device supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown.

[0054] Fig.11 A block diagram of a communications manager supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown.

[0055] Fig.12 A diagram of a system including devices supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown.

[0056] Fig.13 and Fig.14 A block diagram of a device supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown.

[0057] Fig.15 A block diagram of a communications manager supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown.

[0058] Fig.16 A diagram of a system including devices supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown.

[0059] Figure 17 to Figure 24 A flow chart illustrating a method of supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown.

[0060] Detailed Description

[0061] A wireless communication network may support multicast communications with user equipment (UE), wherein the network transmits information to multiple UEs on a multicast channel. The network may operate using one or more radio frequency spectrum bands, which may include licensed radio frequency spectrum bands or unlicensed radio frequency spectrum bands, or both. The network may use a base station associated with the network to transmit information. The base station may transmit multicast information to all UEs in the coverage area, or the base station may transmit the information to a group of UEs in the coverage area. The base station may determine the UE group based on location, device type, mobility, etc.

[0062] The base station may include a set of transmit / receive points (TRPs) that may transmit multicast information to the UE in a joint transmission. For example, the base station may indicate the joint transmission to the UE in a control transmission (e.g., in a physical downlink control channel (PDCCH) transmission), along with the UE beam configuration that the UE will use to receive the joint transmission. Based on the indication from the base station, the UE may determine a quasi co-location (QCL) relationship associated with the joint transmission from the TRPs.

[0063] The base station may determine a transmit beam configuration for transmitting a TRP for a joint transmission. In some examples, the base station may determine a single frequency network (SFN) configuration (e.g., which may also be referred to as a broadcast configuration in some cases) and an associated SFN area (e.g., a broadcast area) based on the TRP transmitted in the joint transmission. In some examples, the UE beam configuration and the transmit beam configuration may each be associated with a corresponding transmission configuration indication (TCI) state.

[0064] In some examples, such as when a base station operates using an unlicensed RF spectrum band (e.g., which may also be a shared licensed RF spectrum band), the base station may perform a listen-before-talk (LBT) procedure at the TRP before transmitting multicast information in a joint transmission during a transmission opportunity (TxOP). If the TRP fails the LBT procedure, the TRP may not have medium access authority and may be inhibited from transmitting in the joint transmission. Accordingly, the TRP that transmits in the joint transmission and the associated SFN area may be based on the results of the LBT procedure. In some examples, the QCL relationship determined by the UE based on an indication from the base station may not match the joint transmission, which may affect the communication efficiency and reliability at the UE.

[0065] In some examples, the base station can use the processing time to determine the results of the LBT procedure and determine the transmit beam configuration for the TRP based on the results of the LBT procedure. Based on the processing time, the base station can have a limited amount of time to determine the transmit beam configuration and UE beam configuration for multicast transmission.

[0066] The techniques described herein may enable a base station to determine a transmit beam configuration for a set of TRPs based on the results of an LBT procedure at those TRPs. The base station may use the transmit beam configuration to transmit multicast information in a joint transmission using a set of TRPs in an unlicensed radio frequency spectrum band (e.g., in a multicast physical downlink shared channel (PDSCH) transmission). In some examples, the techniques described herein may additionally enable a UE to determine a UE beam configuration for receiving multicast information, rather than receiving an indication of the UE beam configuration from a base station. In some examples, the UE may determine a QCL relationship for a multicast transmission based on signaling from a base station.

[0067] In some examples, the base station may indicate to the UE that the UE is to determine a UE beam configuration for receiving a multicast transmission. For example, the base station may transmit a control channel (e.g., PDCCH) transmission without an indication of the UE beam configuration. Based on the absence of the indication, the UE may determine the UE beam configuration for receiving the multicast transmission. In some examples, the base station may indicate a UE beam configuration including an empty TCI state, which may also be referred to as a floating TCI state. Based on the empty TCI state, the UE may determine the UE beam configuration.

[0068] In some examples, a base station may determine a set of TRPs that may be used to transmit multicast information in a first TxOP and a second TxOP based on the results of an LBT procedure for the TRPs. The base station may indicate a first UE beam configuration for the first TxOP in a PDCCH transmission, wherein the first UE beam configuration may be associated with one or more of the TRP sets based on the results of the LBT procedure. The first TxOP may include processing time for the UE to determine a QCL relationship for an available set of TRPs. During the first TxOP, the base station may transmit multicast data from a first TRP (e.g., a serving cell), and the UE may determine a QCL relationship for the available TRPs. During the second TxOP, the base station may transmit multicast data in a joint transmission from an available TRP (e.g., including a serving cell and one or more additional TRPs), and the UE may receive the multicast data based on the determined QCL relationship.

[0069] Aspects of the present disclosure are initially described in the context of a wireless communication system. Example transmission schemes and example process flows are then described. Aspects of the present disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow diagrams related to dynamic single frequency network areas with listen-before-talk uncertainty.

[0070] Figure 1An example of a wireless communication system 100 supporting a dynamic single frequency network area with listen-before-talk uncertainty in accordance with 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.

[0071] 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.

[0072] 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 .

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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 .

[0077] 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 bandwidth portion (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 to have multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used in conjunction with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0078] 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).

[0079] 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).

[0080] A carrier may be associated with a particular bandwidth of a radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)) of a carrier of a particular radio access technology. Devices (e.g., base stations 105, UEs 115, or both) of the wireless communication system 100 may have a hardware configuration that supports communications on a particular carrier bandwidth, or may be configurable to support communications on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communications via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., subband, BWP) or all of a carrier bandwidth.

[0081] 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, a resource element may include a code element period (e.g., the duration of a modulation code element) and a subcarrier, where the code element period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the code rate of the modulation scheme, or both). Thus, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate of 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 can further improve the data rate or data integrity of communication with UE 115.

[0082] 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).

[0083] 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 The duration of a symbol period may depend on the subcarrier spacing or the operating band.

[0084] 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)).

[0085] 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 .

[0086] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with a base station 105 (e.g., on a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other) used to distinguish adjacent cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. The range of such a cell may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area depending on various factors (such as the capabilities of the base station 105). For example, a cell may be or include a building, a subset of a building, or an external space between or overlapping a geographic coverage area 110, as well as other examples.

[0087] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs 115 that have service subscriptions with a network provider that supports the macro cell. A small cell may be associated with a lower power base station 105 (compared to a macro cell), and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to UEs 115 that have service subscriptions with a network provider, or may provide restricted access to UEs 115 associated with the small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users in a home or office). A base station 105 may support one or more cells and may also support communications on one or more cells using one or more component carriers.

[0088] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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 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).

[0094] The wireless communication system 100 may operate using one or more frequency bands, typically in the range of 300 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. Transmissions using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) than transmissions using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0095] The wireless communication system 100 may also operate in a super high frequency (SHF) zone using a frequency band from 3 GHz to 30 GHz (also known as a centimeter band) or in an extremely high frequency (EHF) zone of a spectrum (e.g., from 30 GHz to 300 GHz) (also known as a millimeter band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between UE 115 and base station 105, and the EHF antenna of the corresponding device may be smaller and more closely spaced than the UHF antenna. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and a shorter range than SHF or UHF transmissions. The technology disclosed herein may be adopted across transmissions using one or more different frequency zones, and the use of frequency bands specified across these frequency zones may vary by country or regulatory agency.

[0096] 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 component carriers operating in a licensed band. Operations in an unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among others.

[0097] 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.

[0098] The base station 105 or UE 115 can use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such technology may be referred to as spatial multiplexing. For example, the transmitting device may transmit multiple signals via different antennas or different antenna combinations. Similarly, the receiving device may receive multiple signals via different antennas or different antenna combinations. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device; and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0099] 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).

[0100] The base station 105 or the UE 115 may use beam sweeping techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by the base station 105 in different directions. For example, the base station 105 may transmit signals according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by a transmitting device (such as the base station 105) or a receiving device (such as the UE 115)) to identify a beam direction used by the base station 105 for later transmission or reception.

[0101] Some signals, such as data signals associated with a particular recipient device, may be transmitted by base station 105 in a single beam direction, e.g., a direction associated with a recipient device, such as UE 115. In some examples, a beam direction associated with transmissions along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 with the highest signal quality or other acceptable signal quality.

[0102] In some examples, transmission by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may transmit a reference signal that may be precoded or unprecoded (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)). The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0103] A receiving device (e.g., UE 115) may try multiple reception configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a base station 105. For example, the receiving device may try multiple reception directions by receiving via different antenna subarrays, processing received signals according to different antenna subarrays, receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different reception configurations or reception directions. In some examples, the receiving device may use a single reception configuration to receive along a single beam direction (e.g., when receiving a data signal). The single reception configuration may be aligned on a beam direction determined based on listening according to different reception configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0104] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication of the bearer or packet data convergence protocol (PDCP) layer may be IP-based. The radio link control (RLC) layer may perform packet segmentation and reassembly to communicate on a logical channel. The media access control (MAC) layer may perform priority handling and multiplex logical channels into transport channels. The MAC layer may also use error detection techniques, error correction techniques, or both to support retransmission of the MAC layer to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer may provide the establishment, configuration, and maintenance of an RRC connection that supports radio bearers of user plane data between UE 115 and base station 105 or core network 130. In the physical layer, transport channels may be mapped to physical channels.

[0105] UE 115 and base station 105 may support retransmission of data to increase the likelihood that the data is successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood that data is correctly received on communication link 125. HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve the throughput of the MAC layer in poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, a device may support simultaneous slot HARQ feedback, wherein the device may provide HARQ feedback in a specific time slot for data received in a previous symbol in the time slot. In other cases, the device may provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0106] Base station 105 may determine a transmit beam configuration for transmitting multicast information to UE 115 in a joint transmission using a set of TRPs (e.g., one or more access network transmission entities 145) in an unlicensed radio frequency spectrum band. Base station 105 may determine the transmit beam configuration based on the result of an LBT procedure performed at the TRP. In some examples, base station 105 may indicate to UE 115 that UE 115 is to determine a UE beam configuration for receiving a multicast transmission. Base station 105 may transmit the multicast transmission, along with signaling that UE 115 may use to determine the UE beam configuration. In some examples, UE 115 may additionally determine a QCL relationship associated with the TRP based on the received signaling.

[0107] In some examples, the base station 105 may indicate a first UE beam configuration for a first TxOP in a PDCCH transmission, where the first UE beam configuration may be associated with one or more TRPs in a set of TRPs based on a result of an LBT procedure. During the first TxOP, the base station 105 may transmit multicast data from a first TRP (e.g., a serving cell), and the UE 115 may determine a QCL relationship for an available TRP. During a second TxOP, the base station 105 may transmit multicast data in a joint transmission from the available TRPs.

[0108] Figure 2 An example of a wireless communication system 200 supporting dynamic single frequency network areas with listen-before-talk uncertainty according to aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100. The wireless communication system 200 can include a base station 205, a TRP 245, and a UE 215, which can be referenced Figure 1Examples of corresponding devices described, such as access network transport entity 145. Base station 205 can provide network coverage for geographic coverage area 210. Base station 205 can transmit control and data transmissions (e.g., multicast transmissions) to UE 215 via communication link 225.

[0109] The base station 205 may include a set of TRPs 245, which may include at least TRP-245a and TRP245-b. Although two TRPs are illustrated, three or four, or more TRPs may be used in accordance with the techniques described herein. TRP 245 may be configured to transmit multicast information (e.g., in a multicast PDSCH transmission) to UE 215 in a joint transmission via communication link 225. For example, TRP 245-a and TRP 245-b may transmit multicast information to UE 245-a in a joint transmission via communication links 225-a and 225-d. The base station 205 may perform an LBT procedure for TRP 245 before transmitting multicast information in a joint transmission during a TxOP. In some examples, the base station 205 may use processing time to determine the result of the LBT procedure and determine the transmit beam configuration for TRP 245 based on the result of the LBT procedure. Based on this processing time, the base station 205 may have a limited amount of time to determine the transmit beam configuration and the UE beam configuration for multicast transmission to the UE 215.

[0110] In some examples, the base station 205 may indicate to the UE 215-a that the UE 215-a is to determine a UE beam configuration for receiving a multicast transmission. For example, the base station 205 may transmit a control channel (e.g., PDCCH) transmission without an indication of the UE beam configuration. Based on the absence of the indication, the UE 215-a may determine the UE beam configuration for receiving the multicast transmission. In some examples, the base station 205 may indicate a UE beam configuration that includes an idle TCI state, which may be referred to as a floating TCI state. Based on the idle TCI state, the UE 215-a may determine the UE beam configuration.

[0111] In some examples, the base station 205 may determine a set of TRPs 245 that may be used to transmit multicast information in a first TxOP and a second TxOP based on the results of the LBT procedure for the TRPs 245. The base station 205 may indicate a first UE beam configuration for the first TxOP in a PDCCH transmission, where the first UE beam configuration may be associated with one or more TRPs 245 in the set of TRPs 245 based on the results of the LBT procedure. The first TxOP may include a processing time for the UE 215-a to determine a QCL relationship for the set of available TRPs 245. During the first TxOP, the base station 205 may transmit multicast data from the first TRP 245-a (e.g., a serving cell), and the UE 215-a may determine a QCL relationship for the available TRPs 245. During the second TxOP, the base station 205 may transmit multicast data in a joint transmission from the available TRP 245-a and TRP 245-b, and the UE 215-a may receive the multicast data based on the determined QCL relationship.

[0112] Figure 3 An example of a transmission scheme 300 for supporting a dynamic single frequency network area with listen-before-talk uncertainty in accordance with aspects of the present disclosure is illustrated. In some examples, the transmission scheme 300 can implement aspects of the wireless communication systems 100 and 200. For example, the transmission scheme 300 can include example transmissions associated with a set of TRPs 345, which can be referenced to Figure 1 and Figure 2 Additionally, the transmission scheme 300 may be associated with communication between a UE and a base station, which may be a reference Figure 1 and Figure 2 Examples of corresponding devices described. Transmission scheme 300 may illustrate features for improved multicast information transmission and decoding, among other things.

[0113] In some examples, such as when the base station operates using an unlicensed radio frequency spectrum band (e.g., or a shared licensed radio frequency spectrum band), the base station may perform an LBT procedure at the TRP 345 prior to transmitting the multicast data signal 315 in a joint transmission during a TxOP 305 (e.g., time slot). Figure 3 In the example illustrated in , the base station can determine, based on the results of the LBT procedure, that at least TRP 345-a can be used to transmit a multicast data signal 315-a to the UE during a first TxOP 305-a. The base station can further determine that TRPs 345-a to 345-c can be used to transmit a multicast data signal 315-b to the UE in a joint transmission during a second TxOP 305-b. In some examples, the base station can transmit each multicast data signal 315 in a PDSCH transmission.

[0114] TRP 345-a may be a serving cell of the UE. TRP 345-a may transmit a downlink control information (DCI) message 310-a to the UE during TxOP 305-a, for example, in a PDCCH transmission. DCI message 310-a may indicate a first UE beam configuration for receiving a multicast data signal 315-a during TxOP 305-a. The UE may adopt the first UE beam configuration indicated by the base station to receive the multicast data signal 315-a from TRP 345-a during TxOP 305-a. In some examples, the UE may determine a QCL relationship for TRP 345-a during TxOP 305-a, and receive the multicast data signal 315-a based on the determined QCL relationship. In some examples, TRPs 345-b and 345-c may transmit non-multicast data signals 320 (e.g., unicast data signals) during TxOP 305-a.

[0115] In some examples, the DCI message 310-a may include an indication that TRPs 345-a to 345-c are available for joint transmission during TxOP 305-b. Based on the indication, the UE may determine the QCL relationship for TRPs 345-a to 345-c during the processing time including TxOP 305-a.

[0116] During TxOP 305-b, TRP 345-a may transmit a DCI message 310-b indicating a second UE beam configuration for receiving multicast data signal 315-b during TxOP 305-b. The second UE beam configuration may enable the UE to receive multicast data signal 315-b in a joint transmission from TRPs 345-a through 345-c. In some examples, the UE may receive multicast data signal 315-b based on the determined QCL relationship for TRPs 345-a through 345-c.

[0117] Figure 4 An example of a transmission scheme 400 for supporting a dynamic single frequency network area with listen-before-talk uncertainty in accordance with aspects of the present disclosure is illustrated. In some examples, the transmission scheme 400 can implement aspects of the wireless communication systems 100 and 200. For example, the transmission scheme 400 can include example transmissions associated with a set of TRPs 445, which can be referenced to Figure 1 and Figure 2 Additionally, the transmission scheme 400 may be associated with communication between a UE and a base station, which may be a reference Figure 1 and Figure 2Examples of corresponding devices described. Transmission scheme 400 may illustrate features for improved multicast information transmission and decoding, among other things.

[0118] In some examples, such as when the base station operates using an unlicensed radio frequency spectrum band (e.g., or a shared licensed radio frequency spectrum band), the base station may perform an LBT procedure at the TRP 445 prior to transmitting the multicast data signal 415 in a joint transmission during a TxOP 405 (e.g., a time slot). Figure 4 In the example illustrated in , the base station can determine based on the results of the LBT procedure that TRP 445-a can be used to transmit a multicast data signal 415-a to the UE during a first TxOP 405-a, while TRPs 445-b and 445-c do not have medium access rights. The base station can further determine that TRPs 445-a and 445-b can be used to transmit a multicast data signal 415-b to the UE in a joint transmission during a second TxOP 405-b, while TRP 445-c does not have medium access rights. In some examples, the base station can transmit each multicast data signal 415 in a PDSCH transmission.

[0119] TRP 445-a may be a serving cell of the UE. TRP 445-a may transmit a DCI message 410-a to the UE during TxOP 405-a, for example, in a PDCCH transmission. DCI message 410-a may indicate a first UE beam configuration for receiving a multicast data signal 415-a during TxOP 405-a. The UE may adopt the first UE beam configuration indicated by the base station to receive the multicast data signal 415-a from TRP 445-a during TxOP 405-a. In some examples, the UE may determine a QCL relationship for TRP 445-a during TxOP 405-a, and receive the multicast data signal 415-a based on the determined QCL relationship. The UE may be configured to determine a QCL relationship based on a multicast area (e.g., an SFN area, a preconfigured multicast area, etc.), which may not match the TRP 445 transmitted during TxOP 405-a.

[0120] In some examples, DCI message 410-a may include an indication that TRPs 445-a and 445-b are available for joint transmission during TxOP405-b. Based on the indication, the UE may determine the QCL relationship for TRPs 445-a and 445-b during the processing time including TxOP 405-a. Alternatively, the UE may be configured to determine the QCL relationship based on a preconfigured multicast area, which may not match the TRP 445 transmitted during TxOP405-b.

[0121] During TxOP 405-b, TRP 445-a may transmit a DCI message 410-b indicating a second UE beam configuration for receiving multicast data signal 415-b during TxOP 405-b. The second UE beam configuration may enable the UE to receive multicast data signal 415-b from a joint transmission of TRPs 445-a and 445-b. In some examples, the UE may receive multicast data signal 415-b based on the determined QCL relationship for TRPs 445-a and 445-b.

[0122] Figure 5 An example of a transmission scheme 500 for supporting a dynamic single frequency network region with listen-before-talk uncertainty in accordance with aspects of the present disclosure is illustrated. In some examples, the transmission scheme 500 can implement aspects of the wireless communication systems 100 and 200. For example, the transmission scheme 500 can include example transmissions associated with a set of TRPs 545, which can be referenced to Figure 1 and Figure 2 Additionally, the transmission scheme 500 may be associated with communication between a UE and a base station, which may be a reference Figure 1 and Figure 2 Examples of corresponding devices described. Transmission scheme 500 may illustrate features for improved multicast information transmission and decoding, among other things.

[0123] In some examples, such as when the base station operates using an unlicensed radio frequency spectrum band (e.g., or a shared licensed radio frequency spectrum band), the base station may perform an LBT procedure at the TRP 545 prior to transmitting the multicast data signal 515 in a joint transmission during a TxOP 505 (e.g., time slot). Figure 5 In the example illustrated in , the base station can determine based on the results of the LBT procedure that TRPs 545-a and 545-b can be used to transmit a multicast data signal 515-a to the UE during a first TxOP 505-a, while TRP 545-c has no medium access permission. The base station can further determine that TRPs 545-a to 545-c can be used to transmit a multicast data signal 515-b to the UE in a joint transmission during a second TxOP 505-b. In some examples, the base station can transmit each multicast data signal 515 in a PDSCH transmission.

[0124] The base station may transmit to the UE an indication of a UE beam configuration that the UE is to determine for receiving the multicast data signal 515 during each TxOP 505. In some examples, the UE may identify a set of candidate UE beam configurations that the UE may employ to receive and successfully decode the multicast data signal 515. Additionally or alternatively, the base station may transmit to the UE a configuration identifying the set of candidate UE beam configurations.

[0125] Each TRP 545 may be configured to transmit one or more active signals 510 during each TxOP 505 in which the TRP 545 participates in a joint transmission. For example, TRP 545-a may transmit active signal 510-a together with multicast data signal 515-a during TxOP 505-a, and TRP 545-b may transmit active signal 510-b together with multicast data signal 515-a. Based on active signals 510-a and 510-b, the UE may determine a UE beam configuration for receiving multicast data signal 515-a during TxOP 505-a. Similarly, the UE may determine a UE beam configuration for receiving multicast data signal 515-b during TxOP 505-b based on active signals 510-c to 510-e from TRPs 545-a to 545-c. In some examples, the UE may determine a QCL relationship associated with a multicast data signal 515 in TxOP 505 based on an activity signal 510 received in TxOP 505 .

[0126] In some examples, the activity signal 510 can indicate that a particular TRP is active by the base station transmitting a reference signal in a specific time and / or frequency resource or port set corresponding to the corresponding TRP. For example, a first time and / or frequency resource or port set can correspond to TRP 545-a, such that the presence of a signal (e.g., a reference signal or sequence) in the first time and / or frequency resource or port set indicates the transmission and activity of TRP 545-a. Similarly, the presence of the signal in a second and third time and / or frequency resource or port set can correspond to TRP 545-b and TRP 545-c, respectively, such that the presence of a signal (e.g., a reference signal or sequence) in the second or third time and / or frequency resource or port set indicates transmission by TRP 545-b or TRP 545-c, respectively.

[0127] In some examples, active signals for different TRPs 545-a, TRP 545-b, TRP 545-c can be distinguished by using different scrambling for the transmitted signals (e.g., reference signals, sequences, etc.). For example, the active signals can be transmitted using different scrambling, but transmitted on a common time and / or frequency resource or set of ports, or both. The active signals can be transmitted as part of a control channel (e.g., PDCCH), or can be a separately transmitted sequence (e.g., outside of a control channel or PDCCH).

[0128] Figure 6 An example of a transmission scheme 600 for supporting dynamic single frequency network areas with listen-before-talk uncertainty in accordance with aspects of the present disclosure is illustrated. In some examples, the transmission scheme 600 can implement aspects of wireless communication systems 100 and 200. For example, the transmission scheme 600 can include example transmissions associated with a set of TRPs 645, which can be referenced to Figure 1 and Figure 2 Additionally, the transmission scheme 600 may be associated with communication between a UE and a base station, which may be a reference Figure 1 and Figure 2 Examples of corresponding devices described. Transmission scheme 600 may illustrate features for improved multicast information transmission and decoding, among other things.

[0129] In some examples, such as when the base station operates using an unlicensed radio frequency spectrum band (e.g., a shared licensed radio frequency spectrum band), the base station may perform an LBT procedure at the TRP 645 prior to transmitting the multicast data signal 615 in a joint transmission during a TxOP 605 (e.g., a time slot). Figure 6 In the example illustrated in , the base station can determine based on the results of the LBT procedure that TRPs 645-a and 645-b can be used to transmit a multicast data signal 615-a to the UE during a first TxOP 605-a, while TRP 645-c has no medium access permission. The base station can further determine that TRPs 645-a to 645-c can be used to transmit a multicast data signal 615-b to the UE in a joint transmission during a second TxOP 605-b. In some examples, the base station can transmit each multicast data signal 615 in a PDSCH transmission.

[0130] The base station may transmit to the UE an indication of a UE beam configuration that the UE is to determine for receiving the multicast data signal 615 during each TxOP 605. In some examples, the UE may identify a set of candidate UE beam configurations that the UE may employ to receive and successfully decode the multicast data signal 615. Additionally or alternatively, the base station may transmit to the UE a configuration identifying the set of candidate UE beam configurations.

[0131] Each TRP 645 may be configured to transmit an additional reference signal 610 (e.g., a demodulation reference signal (DMRS), including a DMRS on a particular port, including time and / or frequency resources for such DMRS) during each TxOP 605 in which the TRP 645 participates in a joint transmission. For example, TRP 645-a may transmit an additional reference signal 610-a prior to a multicast data signal 615-a during TxOP 605-a, and TRP 645-b may transmit an additional reference signal 610-b prior to the multicast data signal 615-a. Based on the additional reference signals 610-a and 610-b, the UE may determine a UE beam configuration for receiving the multicast data signal 615-a during TxOP 605-a. Similarly, the UE may determine a UE beam configuration for receiving a multicast data signal 615-b during TxOP 610-b based on additional reference signals 615-c to 605-e from TRPs 645-a to 645-c. In some examples, the UE may determine a QCL relationship associated with a multicast data signal 615 in TxOP 605 based on additional reference signals 610 received in TxOP 605.

[0132] Figure 7 An example of a process flow 700 for supporting a dynamic single frequency network area with listen-before-talk uncertainty in accordance with aspects of the present disclosure is illustrated. In some examples, the process flow 700 can implement aspects of the wireless communication systems 100 and 200. For example, the process flow 700 can include example operations associated with one or more of the base station 705 or the UE 715, which can be referenced Figure 1 and Figure 2 Examples of corresponding devices described. In the following description of process flow 700, operations between base station 705 and UE 715 may be performed in an order different from the example order shown, or operations performed by base station 705 and UE 715 may be performed in a different order or at a different time. Some operations may also be omitted from process flow 700, and other operations may be added to process flow 700. The operations performed by base station 705 and UE 715 may support improvements to base station 705 multicast information transmission operations, and in some examples, may provide improvements to data transmission processing for UE 715 and other benefits.

[0133] At 720, the base station 705 may perform an LBT procedure at the set of TRPs to determine which TRPs may be used to transmit multicast data signals in a joint transmission during the TxOP to the UE 715. Based on the results of the LBT procedure, the base station 705 may determine a transmit beam configuration for the available TRPs.

[0134] At 725, the base station 705 may transmit to the UE 715 an indication of the UE beam configuration that the UE 715 is to determine for receiving the multicast data signal. For example, the base station 705 may transmit a control channel (e.g., PDCCH) transmission without an indication of the UE beam configuration. Based on the absence of the indication, the UE 715 may determine the UE beam configuration for receiving the multicast transmission. In some examples, the base station 705 may indicate a UE beam configuration that includes an idle TCI state, which may be referred to as a floating TCI state. Based on the idle TCI state, the UE 715 may determine that the UE 715 is to determine the UE beam configuration for receiving the multicast data signal.

[0135] In some examples, base station 702 may also transmit a configuration identifying a set of candidate UE beam configurations that UE 715 may adopt to receive and successfully decode the multicast data signal. In some examples, base station 705 may transmit a configuration identifying resources for UE 715 to use to receive additional reference signals for determining the UE beam configuration.

[0136] In some examples, at 730, UE 715 can identify a set of candidate UE beam configurations. In some examples, UE 715 can identify the set based on a configuration received from base station 705.

[0137] At 735, the base station 705 may transmit signaling to the UE 715 during the TxOP to enable the UE 715 to determine the UE beam configuration. In some examples, the signaling may include one or more active signals from the TRPs participating in the joint transmission. Additionally or alternatively, the signaling may include additional reference signals (e.g., DMRS). The UE 715 may receive the additional reference signals in the resources identified by the base station 705.

[0138] At 740, the base station 705 may transmit the multicast data signal in a joint transmission from the TRP set to the UE 715. In some examples, the multicast data signal may be transmitted after the additional reference signal. In some examples, the multicast data signal may be transmitted in a PDSCH transmission.

[0139] At 745, UE 715 may determine a UE beam configuration for receiving and successfully decoding the multicast data signal based on the signaling from base station 705. In some examples, UE 715 may determine a QCL relationship associated with the multicast data signal based on the signaling.

[0140] At 750, UE 715 may decode the multicast data signal based on the signaling from base station 705. In some examples, the UE may decode the multicast data signal based on the determined QCL relationship. Thus, operations performed by UE 715 and base station 705 may support improvements to multicast information transmission and decoding operations, and in some examples, may promote improvements to reliability of communications between UE 715 and base station 705, among other things.

[0141] Figure 8 An example of a process flow 800 for supporting a dynamic single frequency network area with listen-before-talk uncertainty in accordance with aspects of the present disclosure is illustrated. In some examples, the process flow 800 can implement aspects of the wireless communication systems 100 and 200. For example, the process flow 800 can include example operations associated with one or more of the base station 805 or the UE 815, which can be referenced Figure 1 and Figure 2 Examples of corresponding devices described. In the following description of process flow 800, operations between base station 805 and UE 815 may be performed in an order different from the example order shown, or operations performed by base station 805 and UE 815 may be performed in a different order or at a different time. Some operations may also be omitted from process flow 800, and other operations may be added to process flow 800. Operations performed by base station 805 and UE 815 may support improvements to base station 805 multicast information transmission operations, and in some examples, may improve improvements to UE 815 multicast data processing, etc.

[0142] At 820, the base station 805 may perform an LBT procedure at the set of TRPs to determine which TRPs may be used to transmit multicast data signals in a joint transmission to the UE 815 during the first TxOP and the second TxOP (e.g., the first time slot and the second time slot). Based on the results of the LBT procedure, the base station 805 may determine a corresponding transmit beam configuration for the available TRPs during each TxOP.

[0143] At 825, the base station 805 may transmit an indication of the first beam configuration to the UE 815. In some examples, the indication may be transmitted in a DCI message (e.g., in a PDCCH transmission). In some examples, the first beam configuration may include a first TCI state associated with a first multicast data signal transmitted during a first TxOP. In some examples, the first beam configuration may correspond to a multicast area (e.g., an SFN area, a preconfigured multicast area, etc.), which may not match the TRP participating in the joint transmission during the first TxOP. In some other examples, the first beam configuration may be based on the TRP through the LBT procedure, and thus the first beam configuration may match the TRP participating in the joint transmission during the first TxOP. Based on the first beam configuration, the UE 815 may be implemented or configured to determine a QCL relationship associated with the first multicast data signal.

[0144] In some examples, the indication may also identify a set of TRPs that may be used to transmit the second multicast data signal in a joint transmission during the second TxOP.Based on the identified set of TRPs, the UE 815 may be implemented to determine a QCL relationship associated with the second multicast data signal.

[0145] At 830, the base station 805 can transmit a first multicast data signal to the UE 815 during a first TxOP. The first multicast data signal can be transmitted from a first TRP, which can be a serving cell of the UE 815. In some examples, the base station 805 can refrain from transmitting the first multicast data signal from one or more additional TRPs through the LBT procedure for the first TxOP because the UE 815 may not have sufficient processing time to determine the QCL relationship for the joint transmission during the first TxOP. In some examples, the base station can transmit the first multicast data signal in a PDSCH transmission.

[0146] In some examples, at 835, the base station 805 may transmit one or more unicast data signals to the UE 815 during the first TxOP. The unicast data signals may be transmitted from a TRP that passed the LBT procedure for the first TxOP but did not transmit the first multicast data signal.

[0147] At 840, the base station 805 may transmit an indication of a second beam configuration to the UE 815. The second beam configuration may be associated with a TRP set by an LBT procedure for a second TxOP. In some examples, the indication may be transmitted in a DCI message (e.g., in a PDCCH transmission). In some examples, the second beam configuration may include a second TCI state associated with a second multicast data signal transmitted during the second TxOP.

[0148] At 845, the base station 805 may transmit a second multicast data signal to the UE 815 during the second TxOP. The second multicast data signal may be transmitted in a joint transmission using a TRP set through the LBT procedure for the second TxOP. Therefore, the operations performed by the UE 815 and the base station 805 may support improvements to multicast information transmission and decoding operations, and in some examples, may promote improvements to the reliability of communications between the UE 815 and the base station 805, etc.

[0149] Fig. 9 A block diagram 900 of a device 905 supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown. The device 905 may be an example of aspects of a UE 115 as described herein. The device 905 may include a receiver 910, a communication manager 915, and a transmitter 920. The device 905 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0150] The receiver 910 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 dynamic single frequency network areas with listen-before-talk uncertainty, etc.). The information may be passed to other components of the device 905. The receiver 910 may be a reference Fig.12 Examples of aspects of the described transceiver 1220. Receiver 910 may utilize a single antenna or a collection of antennas.

[0151] The communication manager 915 may receive an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmit-receive points during a time slot; receive a multicast data signal and signaling for determining the UE beam configuration from the set of transmit-receive points during the time slot; determine the UE beam configuration for the time slot based on the received indication and the received signaling; and decode the received multicast data signal based on the determined UE beam configuration.

[0152] The communication manager 915 as described herein may be implemented to achieve one or more potential advantages. One implementation may allow the device 905 to communicate with the base station 105 (e.g., Figure 1 12) communications to save power and extend battery life. For example, device 905 can efficiently receive multicast information from base station 105 because device 905 can be able to more reliably determine UE beam configuration and decode the multicast information. Communication manager 915 can be an example of aspects of communication manager 1210 described herein.

[0153] The communication manager 915 or its subcomponents may be implemented in hardware, in 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 915 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 designed to perform the functions described in the present disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof.

[0154] The communication manager 915 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 915 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 915 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.

[0155] The transmitter 920 may transmit signals generated by other components of the device 905. In some examples, the transmitter 920 may be co-located with the receiver 910 in a transceiver module. For example, the transmitter 920 may be a reference Fig.12 Examples of various aspects of the described transceiver 1220. The transmitter 920 may utilize a single antenna or a collection of antennas.

[0156] Fig.10 A block diagram 1000 of a device 1005 supporting dynamic single frequency network zones with listen-before-talk ambiguity according to aspects of the present disclosure is shown. The device 1005 may be an example of aspects of the device 905 or UE 115 as described herein. The device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1040. 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).

[0157] 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 dynamic single frequency network areas with listen-before-talk uncertainty, etc.). The information may be passed to other components of the device 1005. The receiver 1010 may be a reference Fig.12 Examples of various aspects of the described transceiver 1220. The receiver 1010 may utilize a single antenna or a collection of antennas.

[0158] The communication manager 1015 may be an example of aspects of the communication manager 915 as described herein. The communication manager 1015 may include an indication receiving component 1020, a signal receiving manager 1025, a UE beam configuration manager 1030, and a decoder 1035. The communication manager 1015 may be an example of aspects of the communication manager 1210 described herein.

[0159] The indication receiving component 1020 can receive an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmit reception points during a time slot.

[0160] The signal reception manager 1025 may receive a multicast data signal and signaling for determining a UE beam configuration from the set of transmission reception points during a time slot.

[0161] The UE beam configuration manager 1030 may determine the UE beam configuration for the timeslot based on the received indication and the received signaling.

[0162] The decoder 1035 may decode the received multicast data signal based on the determined UE beam configuration.

[0163] Transmitter 1040 can transmit signals generated by other components of device 1005. In some examples, transmitter 1040 can be co-located with receiver 1010 in a transceiver module. For example, transmitter 1040 can be a reference Fig.12 Examples of various aspects of the described transceiver 1220. The transmitter 1040 may utilize a single antenna or a collection of antennas.

[0164] Fig.11 A block diagram 1100 of a communication manager 1105 supporting dynamic single frequency network areas with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown. The communication manager 1105 may be an example of aspects of the communication manager 915, the communication manager 1015, or the communication manager 1210 described herein. The communication manager 1105 may include an indication receiving component 1110, a signal receiving manager 1115, a UE beam configuration manager 1120, and a decoder 1125. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0165] The indication receiving component 1110 can receive an indication of a UE beam configuration that the UE is to determine to use to receive a multicast data signal from a set of transmit-receive points during a time slot. In some examples, the indication receiving component 1110 can identify the presence of additional reference signals from the set of transmit-receive points based on the received indication. In some examples, the indication receiving component 1110 can receive a configuration that identifies resources for the UE to use to receive the additional reference signals. In some cases, the indication is received in a control channel transmission.

[0166] The signal reception manager 1115 may receive a multicast data signal and a signaling for determining a UE beam configuration from the set of transmission reception points during the time slot. In some examples, the signal reception manager 1115 may determine that the multicast data signal is from the set of transmission reception points based on the received signaling for determining the UE beam configuration. In some examples, the signal reception manager 1115 may receive an additional reference signal in the time slot based on the identification, wherein the UE beam configuration for the time slot is determined based on the received additional reference signal.

[0167] In some cases, the received signaling includes an active signal set, each active signal in the active signal set corresponding to a transmit-receive point in the transmit-receive point set. In some examples, the additional reference signal includes a demodulation reference signal. In some cases, the additional reference signal is received in a first one or more symbol periods of the time slot, the first one or more symbol periods preceding a second one or more symbol periods of the time slot associated with the received multicast data signal. In some aspects, the multicast data signal is received on a downlink shared channel.

[0168] The UE beam configuration manager 1120 may determine the UE beam configuration for the time slot based on the received indication and the received signaling. In some examples, the UE beam configuration manager 1120 may identify a candidate beam configuration set associated with the transmit-receive point set, wherein the UE beam configuration for the time slot is determined based on a combination of the identified candidate beam configuration sets. In some cases, the UE beam configuration manager 1120 may receive a configuration identifying the candidate beam configuration set, each candidate beam configuration in the candidate beam configuration set being associated with a transmit-receive point in the transmit-receive point set. In some cases, the UE beam configuration includes a transmission configuration indication state.

[0169] The decoder 1125 may decode the received multicast data signal based on the determined UE beam configuration. In some examples, the decoder 1125 may determine a quasi co-location relationship associated with the received multicast data signal based on the received signaling, wherein the received multicast data signal is decoded based on the determined quasi co-location relationship.

[0170] Fig.12 A diagram of a system 1200 including a device 1205 supporting dynamic single frequency network zones with listen-before-talk ambiguity according to aspects of the present disclosure is shown. The device 1205 may be an example of or include components of a device 905, a device 1005, or a UE 115 as described herein. The device 1205 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communication manager 1210, an I / O controller 1215, a transceiver 1220, an antenna 1225, a memory 1230, and a processor 1240. These components may be in electronic communication via one or more buses (e.g., a bus 1245).

[0171] The communication manager 1210 may receive an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmit-receive points during a time slot; receive a multicast data signal and signaling for determining the UE beam configuration from the set of transmit-receive points during the time slot; determine the UE beam configuration for the time slot based on the received indication and the received signaling; and decode the received multicast data signal based on the determined UE beam configuration.

[0172] I / O controller 1215 can manage input and output signals for device 1205. I / O controller 1215 can also manage peripheral devices that are not integrated into device 1205. In some cases, I / O controller 1215 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1215 can utilize an operating system, such as Or another known operating system. In other cases, I / O controller 1215 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1215 may be implemented as part of a processor. In some cases, a user may interact with device 1205 via I / O controller 1215 or via hardware components controlled by I / O controller 1215.

[0173] The transceiver 1220 may communicate bidirectionally via one or more antennas, wired or wireless links, as described herein. For example, the transceiver 1220 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1220 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.

[0174] In some cases, a wireless device may include a single antenna 1225. However, in some cases, the device may have more than one antenna 1225, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0175] Memory 1230 may include random access memory (RAM) and read-only memory (ROM). Memory 1230 may store computer-readable, computer-executable code 1235 including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 1230 may include, among other things, a basic input / output system (BIOS), which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0176] Processor 1240 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1240 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into processor 1240. Processor 1240 may be configured to execute computer readable instructions stored in a memory (e.g., memory 1230) to cause device 1205 to perform various functions (e.g., functions or tasks to support dynamic single frequency network areas with listen-before-talk uncertainty).

[0177] The processor 1240 of the device 1205 (e.g., controlling the receiver 910, the transmitter 920, or the transceiver 1220) can reduce power consumption and improve communication efficiency based on determining the UE beam configuration and decoding the multicast information. In some examples, the processor 1240 of the device 1205 can reconfigure the parameters for decoding the multicast information. For example, the processor 1240 of the device 1205 can turn on one or more processing units for determining the UE beam configuration or QCL relationship, increase the processing clock, or a similar mechanism within the device 1205. In this way, when a subsequent multicast information transmission is received, the processor 1240 can be ready to respond more efficiently by reducing the ramp-up of processing power. The improvement in power savings and multicast information reception efficiency can further increase the battery life at the device 1205.

[0178] The code 1235 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1235 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 1235 may not be directly executed by the processor 1240, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0179] Fig.13 A block diagram 1300 of a device 1305 supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown. The device 1305 may be an example of aspects of a base station 105 as described herein. The device 1305 may include a receiver 1310, a communication manager 1315, and a transmitter 1320. The device 1305 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0180] Receiver 1310 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 dynamic single frequency network areas with listen-before-talk uncertainty, etc.). The information may be communicated to other components of device 1305. Receiver 1310 may be a reference Fig.16 Examples of various aspects of the described transceiver 1620. The receiver 1310 may utilize a single antenna or a collection of antennas.

[0181] In some examples, the communications manager 1315 may perform a listen-before-talk procedure to determine a set of transmit-receive points that are available for transmitting a multicast data signal to a UE during a time slot; transmit an indication to the UE that the UE is to determine a UE beam configuration that will be used to receive the multicast data signal from the set of transmit-receive points during the time slot; and transmit the multicast data signal and signaling to be used by the UE to determine the UE beam configuration from the set of transmit-receive points during the time slot.

[0182] In some examples, the communication manager 1315 may perform a listen-before-talk procedure to determine that a set of transmit-receive points are available for transmitting a first multicast data signal for a set of UEs during a first time slot and a second time slot; and based on the result of the performed listen-before-talk procedure, transmit to the set of UEs an indication of a first beam configuration for one or more transmit-receive points in the set of transmit-receive points. In some examples, the communication manager 1315 may transmit to the set of UEs an indication of a second beam configuration for a set of transmit-receive points available for transmitting the first multicast data signal to the set of UEs based on the result of the performed listen-before-talk procedure; transmit the first multicast data signal to the set of UEs using a first transmit-receive point in the set of transmit-receive points according to the first beam configuration during the first time slot; and transmit the second multicast data signal to the set of UEs using the set of transmit-receive points according to the second beam configuration for the set of transmit-receive points during the second time slot.

[0183] The communication manager 1315 as described herein may be implemented to achieve one or more potential advantages. One implementation may allow the device 1305 to communicate with the UE 115 (e.g., Figure 11600) to communicate with the UE 115 to save power. For example, the device 1305 can improve the reliability of communication with the UE 115 because the device 1305 can increase the likelihood that the UE 115 can receive multicast information in the dynamic multicast area. The communication manager 1315 can be an example of various aspects of the communication manager 1610 described herein.

[0184] The communication manager 1315 or its subcomponents may be implemented in hardware, in 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 1315 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.

[0185] The communication manager 1315 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 1315 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of the present disclosure, the communication manager 1315 or its subcomponents may be combined with one or more other hardware components (including, but not limited to, 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).

[0186] Transmitter 1320 may transmit signals generated by other components of device 1305. In some examples, transmitter 1320 may be co-located with receiver 1310 in a transceiver module. For example, transmitter 1320 may be a reference Fig.16 Examples of various aspects of the described transceiver 1620. The transmitter 1320 may utilize a single antenna or a collection of antennas.

[0187] Fig.14 A block diagram 1400 of a device 1405 supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown. The device 1405 may be an example of aspects of the device 1305 or base station 105 as described herein. The device 1405 may include a receiver 1410, a communication manager 1415, and a transmitter 1440. The device 1405 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0188] Receiver 1410 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 dynamic single frequency network areas with listen-before-talk uncertainty, etc.). The information may be communicated to other components of device 1405. Receiver 1410 may be a reference Fig.16 Examples of various aspects of the described transceiver 1620. The receiver 1410 may utilize a single antenna or a collection of antennas.

[0189] The communication manager 1415 may be an example of aspects of the communication manager 1315 as described herein. The communication manager 1415 may include an LBT manager 1420, an indication transmission manager 1425, a signal transmission manager 1430, and a beam configuration manager 1435. The communication manager 1415 may be an example of aspects of the communication manager 1610 described herein.

[0190] In some examples, LBT manager 1420 may perform a listen-before-talk procedure to determine that a set of transmit-receive points may be used to transmit a multicast data signal to a UE during a time slot. Indication transmission manager 1425 may transmit to the UE an indication that the UE is to determine a UE beam configuration to be used to receive the multicast data signal from the set of transmit-receive points during the time slot. Signal transmission manager 1430 may transmit a multicast data signal from the set of transmit-receive points during the time slot and signaling to be used by the UE to determine the UE beam configuration.

[0191] In some examples, the LBT manager 1420 may perform a listen-before-talk procedure to determine that a set of transmit-receive points may be used to transmit a first multicast data signal for a set of UEs during a first time slot and a second time slot. The beam configuration manager 1435 may transmit, to the set of UEs, an indication of a first beam configuration for one or more transmit-receive points in the set of transmit-receive points based on the result of the performed listen-before-talk procedure. The signal transmission manager 1430 may transmit, to the set of UEs, a first transmit-receive point in the set of transmit-receive points according to the first beam configuration during the first time slot to the set of UEs for transmitting the first multicast data signal. The beam configuration manager 1435 may transmit, to the set of UEs, an indication of a second beam configuration for a set of transmit-receive points that may be used to transmit the first multicast data signal to the set of UEs based on the result of the performed listen-before-talk procedure. The signal transmission manager 1430 may transmit, to the set of UEs, a second multicast data signal using the set of transmit-receive points according to the second beam configuration for the set of transmit-receive points during the second time slot.

[0192] Transmitter 1440 may transmit signals generated by other components of device 1405. In some examples, transmitter 1440 may be co-located with receiver 1410 in a transceiver module. For example, transmitter 1440 may be a reference Fig.16 Examples of various aspects of the described transceiver 1620. The transmitter 1440 may utilize a single antenna or a collection of antennas.

[0193] Fig.15 A block diagram 1500 of a device 1505 supporting dynamic single frequency network zones with listen-before-talk ambiguity in accordance with aspects of the present disclosure is shown. The communication manager 1505 may be an example of aspects of the communication manager 1315, the communication manager 1415, or the communication manager 1610 described herein. The communication manager 1505 may include an LBT manager 1510, an indication transmission manager 1515, a signal transmission manager 1520, a UE configuration manager 1525, a UE beam configuration manager 1530, and a beam configuration manager 1535. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0194] In some examples, the LBT manager 1510 may perform a listen-before-talk procedure to determine a set of transmit reception points available for transmitting a multicast data signal to a UE during a time slot.

[0195] In some examples, the indication transmission manager 1515 can transmit to the UE an indication of the UE beam configuration that the UE is to determine to receive the multicast data signal from the set of transmission reception points during the time slot. In some cases, the indication is transmitted in a control channel transmission.

[0196] In some examples, the signal transmission manager 1520 can transmit a multicast data signal and signaling to be used by the UE to determine the UE beam configuration from the set of transmission reception points during the time slot. In some cases, the transmitted signaling includes an active signal set, each active signal in the active signal set corresponding to a transmission reception point in the set of transmission reception points.

[0197] In some examples, the signal transmission manager 1520 may transmit an additional reference signal in the time slot based on the transmitted indication, wherein the transmitted signaling includes the additional reference signal. In some examples, the additional reference signal includes a demodulation reference signal. In some cases, the additional reference signal is transmitted in a first one or more symbol periods of the time slot, the first one or more symbol periods preceding a second one or more symbol periods of the time slot associated with the transmitted multicast data signal. In some aspects, the multicast data signal is transmitted on a downlink shared channel transmission.

[0198] In some examples, the UE configuration manager 1525 may transmit a configuration identifying a set of candidate beam configurations for the UE to use to determine the UE beam configuration, each candidate beam configuration in the set of candidate beam configurations being associated with a transmit reception point in the set of transmit reception points. In some examples, the UE configuration manager 1525 may transmit a configuration identifying resources for the UE to use to receive additional reference signals from the set of transmit reception points. In some cases, the UE beam configuration includes a transmission configuration indication state.

[0199] In some examples, the LBT manager 1510 may perform a listen-before-talk procedure to determine that a set of transmit reception points are available for transmitting a first multicast data signal to a set of UEs during a first time slot and a second time slot.

[0200] In some examples, the signal transmission manager 1520 may transmit a first multicast data signal to the set of UEs using a first transmit reception point in the set of transmit reception points according to a first beam configuration during a first time slot. In some cases, the signal transmission manager 1520 may transmit a second multicast data signal to the set of UEs using the set of transmit reception points according to a second beam configuration for the set of transmit reception points during a second time slot.

[0201] In some examples, the signal transmission manager 1520 may determine to use the remaining one or more transmission reception points in the set of transmission reception points to transmit a unicast data signal during the first time slot. In some cases, the signal transmission manager 1520 may refrain from using the remaining one or more transmission reception points in the set of transmission reception points to transmit a first multicast data signal to the set of UEs during the first time slot based on the result of the performed listen-before-talk procedure. In some examples, the signal transmission manager 1520 may refrain from transmitting on the remaining one or more transmission reception points in the set of transmission reception points during the first time slot based on the result of the performed listen-before-talk procedure.

[0202] The beam configuration manager 1530 may transmit to the set of UEs an indication of a first beam configuration for one or more transmit reception points in the set of transmit reception points based on the result of the performed listen-before-talk procedure. In some examples, the beam configuration manager 1530 may transmit to the set of UEs an indication of a second beam configuration for a set of transmit reception points that may be used to transmit the first multicast data signal to the set of UEs based on the result of the performed listen-before-talk procedure.

[0203] In some cases, the first transmission-reception point includes the one or more transmission-reception points in the set of transmission-reception points, and the first beam configuration is for the first transmission-reception point. In some aspects, the first transmission-reception point includes a serving cell for the set of UEs, and the remaining one or more transmission-reception points include non-serving cells for the set of UEs. In some cases, the first beam configuration is consistent with a transmission-reception point through a listen-before-talk procedure performed for a first time slot, and the second beam configuration is consistent with a transmission-reception point through a listen-before-talk procedure performed for a second time slot.

[0204] In some cases, the one or more transmit-receive points in the set of transmit-receive points include the set of transmit-receive points, and the first beam configuration is used for the set of transmit-receive points. In some examples, the first beam configuration is inconsistent with the transmit-receive points through a listen-before-talk procedure performed for a first time slot, and the second beam configuration is consistent with the transmit-receive points through a listen-before-talk procedure performed for a second time slot. In some cases, an indication of the first beam configuration is transmitted in a first downlink control information message in the first time slot. In some cases, an indication of the second beam configuration is transmitted in a second downlink control information message in the second time slot.

[0205] In some cases, the first beam configuration includes a first transmission configuration indicating a state. In some cases, the second beam configuration includes a second transmission configuration indicating a state.

[0206] Fig.16 A diagram of a system 1600 including a device 1605 supporting dynamic single frequency network zones with listen-before-talk uncertainty according to aspects of the present disclosure is shown. The device 1605 may be an example of a device 1305, a device 1405, or a base station 105 as described herein or include components of the above devices. The device 1605 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communication manager 1610, a network communication manager 1615, a transceiver 1620, an antenna 1625, a memory 1630, a processor 1640, and an inter-station communication manager 1645. These components may be in electronic communication via one or more buses (e.g., bus 1650).

[0207] In some examples, the communications manager 1610 may perform a listen-before-talk procedure to determine a set of transmit-receive points that are available for transmitting a multicast data signal to a UE during a time slot; transmit an indication to the UE that the UE is to determine a UE beam configuration that will be used to receive the multicast data signal from the set of transmit-receive points during the time slot; and transmit the multicast data signal and signaling to be used by the UE to determine the UE beam configuration from the set of transmit-receive points during the time slot.

[0208] In some examples, the communication manager 1610 may perform a listen-before-talk procedure to determine that a set of transmit-receive points are available for transmitting a first multicast data signal to a set of UEs during a first time slot and a second time slot; and based on the result of the performed listen-before-talk procedure, transmit to the set of UEs an indication of a first beam configuration for one or more transmit-receive points in the set of transmit-receive points. In some examples, the communication manager 1610 may transmit to the set of UEs an indication of a second beam configuration for a set of transmit-receive points available for transmitting the first multicast data signal to the set of UEs based on the result of the performed listen-before-talk procedure; transmit the first multicast data signal to the set of UEs using a first transmit-receive point in the set of transmit-receive points according to the first beam configuration during the first time slot; and transmit the second multicast data signal to the set of UEs using the set of transmit-receive points according to the second beam configuration for the set of transmit-receive points during the second time slot.

[0209] The network communications manager 1615 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1615 may manage the delivery of data communications for client devices, such as one or more UEs 115.

[0210] The transceiver 1620 may communicate bidirectionally via one or more antennas, wired or wireless links, as described herein. For example, the transceiver 1620 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1620 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.

[0211] In some cases, a wireless device may include a single antenna 1625. However, in some cases, the device may have more than one antenna 1625, which may be capable of transmitting or receiving multiple wireless transmissions concurrently.

[0212] Memory 1630 may include RAM, ROM, or a combination thereof. Memory 1630 may store computer readable code 1635 including instructions that, when executed by a processor (e.g., processor 1640), cause the device to perform various functions described herein. In some cases, memory 1630 may include, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0213] Processor 1640 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, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1640 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated into processor 1640. Processor 1640 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1630) to cause device 1605 to perform various functions (e.g., functions or tasks to support dynamic single frequency network areas with listen-before-talk uncertainty).

[0214] The inter-site communication manager 1645 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 1645 may coordinate the 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 1645 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0215] The code 1635 may include instructions for implementing various aspects of the present disclosure, including instructions for supporting wireless communications. The code 1635 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 1635 may not be directly executed by the processor 1640, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0216] Fig.17 A flow chart illustrating a method 1700 for supporting a dynamic single frequency network area with listen-before-talk uncertainty according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a UE 115 or components thereof as described herein. For example, the operations of the method 1700 may be implemented by a UE 115 or components thereof as described herein. Figures 9 to 12 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0217] At 1705, the UE may receive an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmission reception points during a time slot. 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 with reference to Figures 9 to 12 The described instructions are received by the component to be executed.

[0218] At 1710, the UE may receive a multicast data signal and signaling for determining a UE beam configuration from the set of transmission reception points during a time slot. 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 with reference to Figures 9 to 12 The signal reception manager described is executed.

[0219] At 1715, the UE may determine a UE beam configuration for the time slot based on the received indication and the received signaling. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be performed as described with reference to Figures 9 to 12 The described UE beam configuration manager is used to perform.

[0220] At 1720, the UE may decode the received multicast data signal based on the determined UE beam configuration. The operations of 1720 may be performed according to the methods described herein. In some examples, aspects of the operations of 1720 may be performed as described with reference to Figures 9 to 12 The decoder described is implemented.

[0221] Fig.18 A flow chart illustrating a method 1800 for supporting a dynamic single frequency network area with listen-before-talk uncertainty according to aspects of the present disclosure is shown. 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 9 to 12 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0222] At 1805, the UE may receive an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmission reception points during a time slot. 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 with reference to Figures 9 to 12 The described instructions are received by the component to be executed.

[0223] At 1810, the UE may receive a multicast data signal and signaling for determining a UE beam configuration from the set of transmission reception points during a time slot. 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 with reference to Figures 9 to 12 The signal reception manager described is executed.

[0224] At 1815, the UE may determine, based on the received signaling, that the multicast data signal is from the set of transmission reception points. The operations of 1815 may be performed according to the methods described herein. In some examples, various aspects of the operations of 1815 may be performed as described with reference to Figures 9 to 12 The signal reception manager described is executed.

[0225] At 1820, the UE may identify a set of candidate beam configurations associated with the set of transmit / receive points, wherein the UE beam configuration for the time slot is determined based on a combination of the identified candidate beam configuration sets. The operations of 1820 may be performed according to the methods described herein. In some examples, aspects of the operations of 1820 may be performed as described with reference to Figures 9 to 12 The described UE beam configuration manager is used to perform.

[0226] At 1825, the UE may determine a UE beam configuration for the time slot based on a combination of the received indication, the received signaling, and the identified set of candidate beam configurations. The operations of 1825 may be performed according to the methods described herein. In some examples, aspects of the operations of 1825 may be performed as described with reference to Figures 9 to 12 The described UE beam configuration manager is used to perform.

[0227] At 1830, the UE may decode the received multicast data signal based on the determined UE beam configuration. The operations of 1830 may be performed according to the methods described herein. In some examples, aspects of the operations of 1830 may be performed as described with reference to Figures 9 to 12 The decoder described is implemented.

[0228] Fig.19 A flow chart illustrating a method 1900 for supporting a dynamic single frequency network area with listen-before-talk uncertainty 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 9 to 12 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0229] At 1905, the UE may receive an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmission reception points during a time slot. 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 with reference to Figures 9 to 12 The described instructions are received by the component to be executed.

[0230] At 1910, the UE may identify the presence of an additional reference signal from the set of transmission reception points based on the received indication. 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 with reference to Figures 9 to 12 The described instructions are received by the component to be executed.

[0231] At 1915, the UE may receive a multicast data signal and signaling for determining a UE beam configuration from the set of transmission reception points during a time slot. The operations of 1915 may be performed according to the methods described herein. In some examples, various aspects of the operations of 1915 may be performed as described with reference to Figures 9 to 12 The signal reception manager described is executed.

[0232] At 1920, the UE may receive an additional reference signal in the time slot based on the identifier. The operations of 1920 may be performed according to the methods described herein. In some examples, aspects of the operations of 1920 may be performed as described with reference to Figures 9 to 12 The signal reception manager described is executed.

[0233] At 1925, the UE may determine a UE beam configuration for the time slot based on the received indication, the received signaling, and the received additional reference signal. The operations of 1925 may be performed according to the methods described herein. In some examples, aspects of the operations of 1925 may be performed as described with reference to Figures 9 to 12 The described UE beam configuration manager is used to perform.

[0234] At 1930, the UE may decode the received multicast data signal based on the determined UE beam configuration. The operations of 1930 may be performed according to the methods described herein. In some examples, aspects of the operations of 1930 may be performed as described with reference to Figures 9 to 12 The decoder described is implemented.

[0235] Fig. 20 A flow chart illustrating a method 2000 for supporting a dynamic single frequency network area with listen-before-talk uncertainty according to aspects of the present disclosure is shown. 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 9 to 12 In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described herein. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the functions described herein.

[0236] At 2005, the UE may receive an indication that the UE is to determine a UE beam configuration to be used to receive a multicast data signal from a set of transmission reception points during a time slot. 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 with reference to Figures 9 to 12 The described instructions are received by the component to be executed.

[0237] At 2010, the UE may receive a multicast data signal and a signaling for determining a UE beam configuration from the set of transmission reception points during a time slot. The operations at 2010 may be performed according to the methods described herein. In some examples, various aspects of the operations at 2010 may be performed as described with reference to Figures 9 to 12 The signal reception manager described is executed.

[0238] At 2015, the UE may determine a UE beam configuration for the time slot based on the received indication and the received signaling. The operations of 2015 may be performed according to the methods described herein. In some examples, aspects of the operations of 2015 may be performed as described with reference to Figures 9 to 12 The described UE beam configuration manager is used to perform.

[0239] At 2020, the UE may determine a quasi co-location relationship associated with the received multicast data signal based on the received signaling. The operations of 2020 may be performed according to the methods described herein. In some examples, aspects of the operations of 2020 may be performed as described with reference to Figures 9 to 12 The decoder described is implemented.

[0240] At 2025, the UE may decode the received multicast data signal based on the determined UE beam configuration and the determined quasi co-location relationship. The operations of 2025 may be performed according to the methods described herein. In some examples, aspects of the operations of 2025 may be performed as described with reference to Figures 9 to 12 The decoder described is implemented.

[0241] Fig.21 A flow chart illustrating a method 2100 for supporting a dynamic single frequency network area with listen-before-talk uncertainty according to aspects of the present disclosure is shown. 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 with reference to Figures 13 to 16 In some examples, a base station may execute an instruction set to control functional elements of the base station to perform the functions described herein. Additionally or alternatively, a base station may use dedicated hardware to perform various aspects of the functions described herein.

[0242] At 2105, the base station may perform a listen-before-talk procedure to determine that a set of transmit reception points are available for transmitting a multicast data signal to a UE during a time slot. 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 with reference to Figures 13 to 16 The described LBT manager is used to perform

[0243] At 2110, the base station may transmit to the UE an indication of a UE beam configuration that the UE is to determine to receive the multicast data signal from the set of transmit-receive points during the time slot. The operations of 2110 may be performed according to the methods described herein. In some examples, aspects of the operations of 2110 may be performed as described with reference to Figures 13 to 16 The described instructions are delivered to the manager for execution.

[0244] At 2115, the base station may transmit a multicast data signal and signaling to be used by the UE to determine the UE beam configuration from the set of transmission reception points during the time slot. The operations of 2115 may be performed according to the methods described herein. In some examples, aspects of the operations of 2115 may be performed as described with reference to Figure 13 to Figure 16 The described signal transmission manager is executed.

[0245] Fig. 22 A flow chart illustrating a method 2200 for supporting a dynamic single frequency network area with listen-before-talk uncertainty according to aspects of the present disclosure is shown. 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 13 to 16 In some examples, a base station may execute an instruction set to control functional elements of the base station to perform the functions described herein. Additionally or alternatively, a base station may use dedicated hardware to perform various aspects of the functions described herein.

[0246] At 2205, the base station may perform a listen-before-talk procedure to determine that a set of transmit reception points are available for transmitting a multicast data signal to a UE during a time slot. 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 with reference to Figures 13 to 16 The described LBT manager is used to perform

[0247] At 2210, the base station may transmit to the UE an indication of a UE beam configuration that the UE is to determine to receive the multicast data signal from the set of transmit-receive points during the time slot. 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 with reference to Figures 13 to 16 The described instructions are delivered to the manager for execution.

[0248] At 2215, the base station may transmit a configuration identifying a set of candidate beam configurations for the UE to use to determine the UE beam configuration, each candidate beam configuration in the set of candidate beam configurations being associated with a transmit reception point in the set of transmit reception points. The operations of 2215 may be performed according to the methods described herein. In some examples, aspects of the operations of 2215 may be performed as described with reference to Figure 13 to Figure 16 The described UE configuration manager is used to perform.

[0249] At 2220, the base station may transmit a multicast data signal and signaling to be used by the UE to determine the UE beam configuration from the set of transmission reception points during the time slot. The operations of 2220 may be performed according to the methods described herein. In some examples, aspects of the operations of 2220 may be performed as described with reference to Figure 13 to Figure 16 The described signal transmission manager is executed.

[0250] Fig.23 A flow chart illustrating a method 2300 for supporting a dynamic single frequency network area with listen-before-talk uncertainty according to aspects of the present disclosure is shown. The operations of the method 2300 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2300 may be implemented by a base station 105 or components thereof as described herein. Figures 13 to 16 In some examples, a base station may execute an instruction set to control functional elements of the base station to perform the functions described herein. Additionally or alternatively, a base station may use dedicated hardware to perform various aspects of the functions described herein.

[0251] At 2305, the base station may perform a listen-before-talk procedure to determine that a set of transmit reception points are available to transmit a multicast data signal to the UE during a time slot. The operations of 2305 may be performed according to the methods described herein. In some examples, aspects of the operations of 2305 may be performed as described with reference to Figures 13 to 16 The described LBT manager is used to perform

[0252] At 2310, the base station may transmit to the UE an indication of a UE beam configuration that the UE is to determine to use to receive the multicast data signal from the set of transmit-receive points during the time slot. The operations of 2310 may be performed according to the methods described herein. In some examples, aspects of the operations of 2310 may be performed as described with reference to Figures 13 to 16 The described instructions are delivered to the manager for execution.

[0253] At 2315, the base station may transmit a configuration identifying resources for the UE to use to receive additional reference signals from the set of transmit / receive points. The operations of 2315 may be performed according to the methods described herein. In some examples, aspects of the operations of 2315 may be performed as described with reference to Figure 13 to Figure 16 The described UE configuration manager is used to perform.

[0254] At 2320, the base station may transmit a multicast data signal and signaling to be used by the UE to determine the UE beam configuration from the set of transmission reception points during the time slot. The operations of 2320 may be performed according to the methods described herein. In some examples, aspects of the operations of 2320 may be performed as described with reference to Figure 13 to Figure 16 The described signal transmission manager is executed.

[0255] At 2325, the base station may transmit an additional reference signal in the time slot based on the transmitted indication, wherein the transmitted signaling includes the additional reference signal. The operations of 2325 may be performed according to the methods described herein. In some examples, aspects of the operations of 2325 may be performed as described with reference to Figure 13 to Figure 16 The described signal transmission manager is executed.

[0256] Fig.24 A flow chart illustrating a method 2400 for supporting a dynamic single frequency network area with listen-before-talk uncertainty according to aspects of the present disclosure is shown. The operations of the method 2400 may be implemented by a base station 105 or components thereof as described herein. For example, the operations of the method 2400 may be implemented by a base station 105 or components thereof as described herein. Figures 13 to 16 In some examples, a base station may execute an instruction set to control functional elements of the base station to perform the functions described herein. Additionally or alternatively, a base station may use dedicated hardware to perform various aspects of the functions described herein.

[0257] At 2405, the base station may perform a listen-before-talk procedure to determine that a set of transmission reception points are available for transmitting a first multicast data signal for a set of UEs during a first time slot and a second time slot. The operations of 2405 may be performed according to the methods described herein. In some examples, aspects of the operations of 2405 may be performed as described with reference to Figures 13 to 16 The described LBT manager is used to perform

[0258] At 2410, the base station may transmit, to the set of UEs, an indication of a first beam configuration for one or more transmit reception points in the set of transmit reception points based on the result of the performed listen-before-talk procedure. The operations of 2410 may be performed according to the methods described herein. In some examples, aspects of the operations of 2410 may be performed as described with reference to Figures 13 to 16 The beam configuration manager described is implemented.

[0259] At 2415, the base station may transmit a first multicast data signal to the set of UEs using a first transmit reception point in the set of transmit reception points according to the first beam configuration during a first time slot. The operations of 2415 may be performed according to the methods described herein. In some examples, aspects of the operations of 2415 may be performed as described with reference to Figure 13 to Figure 16The described signal transmission manager is executed.

[0260] At 2420, the base station may transmit, to the set of UEs, an indication of a second beam configuration for a set of transmit reception points that may be used to transmit the first multicast data signal to the set of UEs based on the result of the performed listen-before-talk procedure. The operations of 2420 may be performed according to the methods described herein. In some examples, aspects of the operations of 2420 may be performed as described with reference to Figures 13 to 16 The beam configuration manager described is implemented.

[0261] At 2425, the base station may transmit a second multicast data signal to the set of UEs using the set of transmit reception points according to a second beam configuration for the set of transmit reception points during a second time slot. The operations of 2425 may be performed according to the methods described herein. In some examples, aspects of the operations of 2425 may be performed as described with reference to Figure 13 to Figure 16 The described signal transmission manager is executed.

[0262] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified and other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0263] 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 networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applied to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0264] 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.

[0265] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a DSP, an ASIC, a CPU, 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 the alternative, the processor may be any 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).

[0266] 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.

[0267] 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 this coaxial cable, optical fiber cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are just included in the definition of computer-readable 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.

[0268] 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 example 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."

[0269] 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.

[0270] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that can be implemented or fall within the scope of the claims. The term "example" 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, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0271] The description herein is provided to enable one of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill 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 at a user equipment UE, comprising: receiving an indication that the UE is to determine a UE beam configuration to be used for receiving a multicast data signal from a plurality of transmit reception points during a time slot; receiving the multicast data signal and signaling for determining the UE beam configuration from the plurality of transmit reception points during a time slot; determining the UE beam configuration for the time slot based at least in part on the received indication and the received signaling; as well as The received multicast data signal is decoded based at least in part on the determined UE beam configuration.

2. The method of claim 1, further comprising: determining, based at least in part on received signaling for determining the UE beam configuration, that the multicast data signal is from the plurality of transmission reception points; as well as A set of candidate beam configurations associated with the plurality of transmit-receive points is identified, wherein the UE beam configuration for the time slot is determined based at least in part on a combination of the identified sets of candidate beam configurations.

3. The method of claim 2, further comprising: A configuration identifying the set of candidate beam configurations is received, each candidate beam configuration in the set of candidate beam configurations being associated with a transmit-receive point in the plurality of transmit-receive points.

4. The method of claim 2, wherein the received signaling comprises a plurality of active signals, each of the plurality of active signals corresponding to one of the plurality of transmission and reception points.

5. The method of claim 1, further comprising: identifying the presence of additional reference signals from the plurality of transmit-receive points based at least in part on the received indication; as well as The additional reference signal is received in the time slot based at least in part on the identification, wherein the UE beam configuration for the time slot is determined based at least in part on the received additional reference signal.

6. The method of claim 5, further comprising: A configuration identifying resources for the UE to use for receiving the additional reference signal is received. The method of claim 5 , wherein the additional reference signal comprises a demodulation reference signal.

8. The method of claim 5, wherein the additional reference signal is received in a first one or more symbol periods of the time slot, the first one or more symbol periods of the time slot preceding a second one or more symbol periods of the time slot associated with the received multicast data signal.

9. The method of claim 1, further comprising: A quasi co-location relationship associated with the received multicast data signal is determined based at least in part on the received signaling, wherein the received multicast data signal is decoded based at least in part on the determined quasi co-location relationship.

10. The method of claim 1, wherein the indication is received in a control channel transmission.

11. The method of claim 1, wherein the UE beam configuration comprises a transmission configuration indication state.

12. The method of claim 1, wherein the multicast data signal is received on a downlink shared channel.

13. A method for wireless communication at a network access node, comprising: performing a listen-before-talk procedure to determine that a plurality of transmit-receive points are available for transmitting a multicast data signal to a user equipment UE during a time slot; transmitting an indication to the UE that the UE is to determine a UE beam configuration to be used for receiving the multicast data signal from the plurality of transmit / receive points during the time slot; as well as The multicast data signal and signaling to be used by the UE to determine the UE beam configuration are transmitted from the plurality of transmit reception points during the time slot.

14. The method of claim 13, further comprising: The transmission identifier is used by the UE to determine a configuration of a candidate beam configuration set for the UE beam configuration, each candidate beam configuration in the candidate beam configuration set is associated with a transmission reception point among the multiple transmission reception points.

15. The method of claim 13, wherein the transmitted signaling comprises a plurality of active signals, each of the plurality of active signals corresponding to one of the plurality of transmit-receive points.

16. The method of claim 13, further comprising: transmitting a configuration identifying resources for the UE to use for receiving additional reference signals from the plurality of transmission and reception points; as well as The additional reference signal is transmitted in the time slot based at least in part on the transmitted indication, wherein the transmitted signaling includes the additional reference signal. The method of claim 16 , wherein the additional reference signal comprises a demodulation reference signal.

18. The method of claim 16, wherein the additional reference signal is transmitted in a first one or more symbol periods of the time slot, the first one or more symbol periods of the time slot preceding a second one or more symbol periods of the time slot associated with the transmitted multicast data signal.

19. The method of claim 13, wherein the indication is transmitted in a control channel transmission.

20. A method for wireless communication at a network access node, comprising: performing a listen-before-talk procedure to determine that a plurality of transmit-receive points are available for transmitting a first multicast data signal for a set of user equipment UEs during a first time slot and a second time slot; transmitting, to the set of UEs, an indication of a first beam configuration for one or more of the plurality of transmit-reception points based at least in part on a result of the performed listen-before-talk procedure; transmitting the first multicast data signal to the set of UEs using a first transmit reception point of the plurality of transmit reception points according to the first beam configuration during the first time slot; transmitting, to the set of UEs, an indication of a second beam configuration for the plurality of transmit reception points usable for transmitting the first multicast data signal to the set of UEs based at least in part on a result of the performed listen-before-talk procedure; as well as A second multicast data signal is transmitted to the set of UEs using the plurality of transmit-receive points according to the second beam configuration for the plurality of transmit-receive points during the second time slot.

21. The method of claim 20, wherein the first transmission reception point comprises the one or more of the plurality of transmission reception points, and the first beam is configured for the first transmission reception point.

22. The method of claim 21, further comprising: It is determined that a unicast data signal is to be transmitted using the remaining one or more transmission and reception points of the plurality of transmission and reception points during the first time slot.

23. The method of claim 21, further comprising: Transmitting the first multicast data signal to the set of UEs using remaining one or more of the plurality of transmit-receive points during the first time slot is refrained from based at least in part on a result of the performed listen-before-talk procedure.

24. The method of claim 23, wherein the first transmission reception point comprises a serving cell for the set of UEs, and the remaining one or more transmission reception points comprise non-serving cells for the set of UEs.

25. The method of claim 21, wherein the first beam configuration is consistent with the transmit-receive point by a listen-before-talk procedure performed for the first time slot, and the second beam configuration is consistent with the transmit-receive point by a listen-before-talk procedure performed for the second time slot.

26. The method of claim 20, wherein the one or more of the plurality of transmit-receive points comprises the plurality of transmit-receive points, and the first beam is configured for the plurality of transmit-receive points.

27. An apparatus for wireless communication at a user equipment UE, comprising: processor; a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the device to: receiving an indication that the UE is to determine a UE beam configuration to be used for receiving a multicast data signal from a plurality of transmit reception points during a time slot; receiving the multicast data signal and signaling for determining the UE beam configuration from the plurality of transmit reception points during a time slot; determining the UE beam configuration for the time slot based at least in part on the received indication and the received signaling; as well as The received multicast data signal is decoded based at least in part on the determined UE beam configuration.

28. The apparatus of claim 27, wherein the instructions are further executable by the processor to cause the apparatus to perform any one of claims 2-12.

29. An apparatus for wireless communication at a network access node, comprising: processor; a memory coupled to the processor; as well as Instructions stored in the memory, and executable by the processor to cause the device to perform any one of claims 13-19.

30. An apparatus for wireless communication at a network access node, comprising: processor; a memory coupled to the processor; as well as Instructions stored in the memory, and the instructions can be executed by the processor to cause the device to perform any one of claims 20-26.

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