Quasi co-location type for spatially correlated synchronization signal block beams

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a repeater may receive, from a network node, a transmit configuration indication (TCI) for a plurality of synchronization signal block (SSB) beams, where the TCI indicates a quasi-co-location (QCL) type for a spatial transmit (Tx) parameter for the plurality of SSB beams, and the QCL type for the spatial Tx parameter indicates that the plurality of SSB beams are Tx spatially dependent. The repeater may receive the plurality of SSB beams from the network node according to the TCI, wherein the plurality of SSBs are associated with a direction of the repeater. The relay may relay the plurality of SSB beams to a user equipment (UE). Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Patent Application No. 17 / 805,631, filed on June 6, 2022, entitled “QUASI CO-LOCATION TYPE FOR SPATIALLY CORRELATED SYNCHRONIZATIONSIGNAL BLOCK BEAMS” and assigned to the assignee of this application. The disclosure of that prior application is considered a part of and incorporated by reference into this patent application. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and to quasi-co-location (QCL) type techniques and apparatus for spatially correlated synchronization signal block (SSB) beams. Background Art

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

[0005] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as a user equipment (UE) or multiple UEs. The UE may communicate with the network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, among other examples).

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

[0007] In some specific implementations, a repeater for wireless communication includes: a memory, and one or more processors coupled to the memory, the memory including instructions executable by the one or more processors to cause the repeater to perform the following operations: receiving a transmit configuration indication (TCI) for multiple synchronization signal block (SSB) beams from a network node, wherein the TCI indicates a quasi-co-location (QCL) type of spatial transmission (Tx) parameters for the multiple SSB beams, and the QCL type for the spatial Tx parameters indicates that the multiple SSB beams are Tx spatially correlated; receiving the multiple SSB beams from the network node according to the TCI, wherein the multiple SSBs are associated with a direction of the repeater; and relaying the multiple SSB beams to a user equipment (UE).

[0008] In some specific implementations, a network node for wireless communication includes: a memory, and one or more processors coupled to the memory, the memory including instructions executable by the one or more processors to cause the network node to perform the following operations: sending TCI for multiple SSB beams to a repeater, wherein the TCI indicates a QCL type for spatial Tx parameters of the multiple SSB beams, and the QCL type for the spatial Tx parameters indicates that the multiple SSB beams are Tx spatially correlated; and sending the multiple SSB beams to the repeater for relaying to a UE according to the TCI, wherein the multiple SSBs are associated with a direction of the repeater.

[0009] In some specific implementations, a method of wireless communication performed by a repeater includes: receiving TCI for multiple SSB beams from a network node, wherein the TCI indicates a QCL type for a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated; receiving the multiple SSB beams from the network node according to the TCI, wherein the multiple SSBs are associated with a direction of the repeater; and relaying the multiple SSB beams to a UE.

[0010] In some specific implementations, a method of wireless communication performed by a network node includes: sending a TCI for multiple SSB beams to a repeater, wherein the TCI indicates a QCL type for a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated; and sending the multiple SSB beams to the repeater for relaying to a UE based on the TCI, wherein the multiple SSBs are associated with a direction of the repeater.

[0011] In some specific implementations, a non-transitory computer-readable medium storing an instruction set for wireless communication includes one or more instructions that, when executed by one or more processors of a repeater, cause the repeater to: receive a TCI for multiple SSB beams from a network node, wherein the TCI indicates a QCL type for a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated; receive the multiple SSB beams from the network node based on the TCI, wherein the multiple SSBs are associated with a direction of the repeater; and relay the multiple SSB beams to a UE.

[0012] In some specific implementations, a non-transitory computer-readable medium storing an instruction set for wireless communication includes one or more instructions that, when executed by one or more processors of a network node, cause the network node to: send a TCI for multiple SSB beams to a repeater, wherein the TCI indicates a QCL type for spatial Tx parameters of the multiple SSB beams, and the QCL type for the spatial Tx parameters indicates that the multiple SSB beams are Tx spatially correlated; and send the multiple SSB beams to the repeater for relaying to a UE based on the TCI, wherein the multiple SSBs are associated with a direction of the repeater.

[0013] In some specific implementations, an apparatus for wireless communication includes: a component for receiving TCI for multiple SSB beams from a network node, wherein the TCI indicates a QCL type for a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated; a component for receiving the multiple SSB beams from the network node based on the TCI, wherein the multiple SSBs are associated with a direction of the apparatus; and a component for relaying the multiple SSB beams to a UE.

[0014] In some specific implementations, an apparatus for wireless communication includes: a component for sending TCI for multiple SSB beams to a repeater, wherein the TCI indicates a QCL type of a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated; and a component for sending the multiple SSB beams to the repeater for relaying to a UE based on the TCI, wherein the multiple SSBs are associated with a direction of the repeater.

[0015] Aspects collectively include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices and / or processing systems as fully described herein with reference to the drawings and description and as illustrated in the drawings and description.

[0016] The features and technical advantages of examples according to the present disclosure have been outlined quite extensively above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims.

[0017] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other non-module component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / shopping devices, medical devices and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The devices incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers). The various aspects described herein are intended to be practiced in a variety of devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to be able to understand the above-mentioned features of the present disclosure in detail, a more specific description briefly summarized above may be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0020] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0021] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0022] Figures 4 to 6 is a diagram illustrating an example associated with a quasi co-location (QCL) type for a spatially correlated synchronization signal block (SSB) beam according to the present disclosure.

[0023] Figures 7 and 8 is a diagram illustrating an example process associated with a QCL type for spatially correlated SSB beams according to the present disclosure.

[0024] Figures 9 and 10 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0025] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the protection scope of the present disclosure will be fully conveyed to those skilled in the art. It should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods implemented using other structures, functionality, or structures and functionality in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0026] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0027] Although various aspects may be described herein using terminology generally associated with 5G or new radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or 5G and beyond (e.g., 6G) RATs.

[0028] Figure 11 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), one user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0029] In some examples, the network node 110 is or includes a network node that communicates with the UE 120 via a radio access link, such as an RU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link, such as a CU. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. For example, the network node 110 may include an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul, midhaul, and / or backhaul interfaces, such as direct physical connections, air interfaces, or virtual networks, using any suitable transport network.

[0030] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to a coverage area of ​​the network node 110 and / or a network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1 In the example shown in , network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. The network node may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile network node 110 (e.g., a mobile network node).

[0031] In some aspects, the term "base station" or "network node" may refer to a converged base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near-RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with the network node 110). In some aspects, the term "base station" or "network node" may refer to a plurality of devices configured to perform one or more functions. For example, in some distributed systems, each of a number of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeat the execution of at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not the other. In this way, a single device may include more than one base station.

[0032] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communications between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0033] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0034] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

[0035] UE 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. UE 120 may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0036] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0037] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, air interface, etc. Frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0038] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using network node 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0039] The devices of the wireless network 100 may communicate using an electromagnetic spectrum, which may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be understood that, although portions of FR1 are greater than 6 GHz, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0040] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125 GHz-24.25 GHz). The bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend the features of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz-71 GHz), FR4 (52.6 GHz-114.25 GHz), and FR5 (114.25 GHz-300 GHz). Each of these higher frequency bands falls within the EHF band.

[0041] Considering the above examples, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. Additionally, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0042] In some aspects, a repeater (e.g., repeater 122) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive a transmit configuration indication (TCI) for a plurality of synchronization signal block (SSB) beams from a network node, wherein the TCI indicates a quasi co-location (QCL) type of spatial transmit (Tx) parameters for the plurality of SSB beams, and the QCL type for the spatial Tx parameters indicates that the plurality of SSB beams are Tx spatially correlated; receive the plurality of SSB beams from the network node according to the TCI, wherein the plurality of SSBs are associated with a direction of the repeater; and relay the plurality of SSB beams to a UE. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0043] In some aspects, a network node (e.g., network node 110) may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may send a TCI for multiple SSB beams to a repeater, wherein the TCI indicates a QCL type for a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated; and send the multiple SSB beams to the repeater for relaying to a UE according to the TCI, wherein the multiple SSBs are associated with a direction of the repeater. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0044] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 Different than described.

[0045] Figure 2 2 is a diagram illustrating an example 200 of a network node 110 communicating with a user equipment (UE) 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0046] At the network node 110, a transmit processor 220 may receive data intended for a UE 120 (or a set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a to 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0047] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0048] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0049] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or may be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components in.

[0050] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to execute the instructions described herein (eg, reference Figures 4 to 10 ) any aspects of any of the methods described herein.

[0051] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component of the modem 232 shown as DEMOD), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to execute the instructions described herein (e.g., reference 2 Figures 4 to 10 ) any aspects of any of the methods described herein.

[0052] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other components in may perform one or more techniques associated with the type of QCL for spatially correlated SSB beams, as described in more detail elsewhere herein. In some aspects, a repeater described herein includes Figure 2 One or more components of the network node 110 shown in FIG. In some aspects, a relay as described herein includes Figure 2 1. For example, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 7 The process of 700 Figure 8 800 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly or after compilation, conversion and / or interpretation) by one or more processors of network node 110 and / or UE 120, may cause the one or more processors, UE 120 and / or network node 110 to perform or direct, for example, Figure 7 The process of 700 Figure 8 The operations of process 800 and / or other processes described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0053] In some aspects, a repeater (e.g., repeater 122) includes means for receiving TCI for multiple SSB beams from a network node, wherein the TCI indicates a QCL type for a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated; means for receiving multiple SSB beams from the network node according to the TCI, wherein the multiple SSBs are associated with a direction of the repeater; and / or means for relaying the multiple SSB beams to the UE. In some aspects, means for the repeater to perform operations described herein may include, for example, one or more of the communication manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0054] In some aspects, a network node (e.g., network node 110) includes: a means for sending a TCI for a plurality of SSB beams to a repeater, wherein the TCI indicates a QCL type for a spatial Tx parameter for the plurality of SSB beams, and the QCL type for the spatial Tx parameter indicates that the plurality of SSB beams are Tx spatially correlated; and / or a means for sending a plurality of SSB beams to a repeater for relaying to a UE according to the TCI, wherein the plurality of SSBs are associated with a direction of the repeater. In some aspects, means for a network node to perform operations described herein may include, for example, one or more of a communication manager 150, a transmit processor 220, a TX MIMO processor 230, a modem 232, an antenna 234, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246.

[0055] Although Figure 2 The blocks in the 2000 and 2010 are illustrated as distinct components, but the functionality described above for these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described for the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0056] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 Different than described.

[0057] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or parts in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated or decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) that perform base station functionality can be implemented as an aggregated base station (also called an independent base station or a monolithic base station) or a decomposed base station. "Network entity" or "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0058] An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, the CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other network nodes. The DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), and the like.

[0059] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0060] Figure 3 3 is a diagram illustrating an example disaggregated base station architecture 300 according to the present disclosure. The disaggregated base station architecture 300 may include a CU 310 that may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more disaggregated control units, such as a near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both. The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via an F1 interface. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0061] Each of the units (including CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more of the other units via a transmission medium. In some examples, each of the units may include a wired interface and a wireless interface, the wired interface being configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium, and the wireless interface being configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium, or to perform both.

[0062] In some aspects, the CU 310 may host one or more higher-layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, the CU 310 may be logically divided into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface such as an E1 interface. As needed, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0063] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a MAC layer, and one or more high physical (PHY) layers, at least in part, according to a functional partition such as that defined by 3GPP. In some aspects, the one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc. In some aspects, the DU 330 may also host one or more low PHY layers, such as one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0064] Each RU 340 may implement lower layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions based on functional splits (e.g., functional splits defined by 3GPP) such as lower layer functional splits, or low PHY layer functions such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc. In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture such as a vRAN architecture.

[0065] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0066] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or in communication with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0067] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0068] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 Different than described.

[0069] In NR and sub-THz (terahertz) communication systems, line-of-sight (LOS) channels may be required to achieve coverage and high throughput. In indoor or urban scenarios, LOS channels may be difficult to establish, so deployments may rely on repeaters to penetrate windows or bypass obstructions. The repeater can be an outdoor-to-indoor penetration repeater. The repeater can be a self-installable window-on-beamforming repeater that can be designed to offset millimeter-wave penetration, reflection, and structural shadow losses so that the repeater can provide signals (e.g., millimeter-wave signals) to UEs in the interior environment. In other words, the repeater can act as a wireless entrance between an outdoor environment including a network node that provides a signal and an interior environment where the UE is located. Alternatively, another type of device, such as a repeater, a femtocell, or a reconfigurable smart surface (RIS), can be used.

[0070] A repeater may be required to maintain various requirements. A repeater may be required to maintain low latency relaying so that the UE channel delay spread may not exceed the cyclic prefix length, which may cause inter-symbol interference. A repeater may be required to cover a spatial area, such as an interior room. A repeater may be required to support communications to multiple UEs. Such requirements may not always be achieved by a repeater, thereby affecting the performance of UEs that rely on the repeater.

[0071] In various aspects of the techniques and apparatus described herein, a repeater may receive TCI for multiple SSB beams from a network node. The TCI may indicate a QCL type for spatial Tx parameters for the multiple SSB beams. The QCL type for the spatial Tx parameters may indicate that the multiple SSB beams are Tx spatially correlated. Beam indices associated with multiple SSB beams may be Tx spatially correlated in the same direction, and the beam indices may be defined under the QCL type for both downlink and uplink. The repeater may receive multiple SSB beams from a network node based on the TCI, wherein the multiple SSBs may be associated with a direction of the repeater. The repeater may relay the multiple SSB beams to the UE.

[0072] In some aspects, the repeater may deploy a transparent beam management procedure such that the UE may be unaware of the repeater, but the network node may be aware of the repeater. During the transparent beam management procedure, the network node may send multiple SSB beams (e.g., SSB index) in the same direction, which may correspond to the direction of the repeater. The repeater may receive multiple SSB beams. The repeater may relay multiple SSB beams received from the network node to different spatial locations. The network node may define a QCL type E for spatial Tx parameters for multiple SSB beams, which may include multiple downlink and / or uplink SSB beams. The network node may define spatial Tx parameters for multiple SSB beams, wherein the spatial Tx parameters may indicate that the multiple SSB beams are spatially correlated. Multiple SSB beams that are spatially correlated may be associated with the same direction. The network node may signal the repeater that the multiple SSB beams are spatially correlated, which may implement a transparent beam management procedure, and cell edge augmentation may also be used when a low complexity repeater is used.

[0073] In some aspects, the repeater may not perform digital processing on the multiple SSB beams received from the network node, which may be based at least in part on a relay low latency requirement. The relay low latency requirement may define the latency associated with relaying the SSB beam to be lower than the cyclic prefix length. Otherwise, any signal that does not come from the repeater and arrives at the UE may cause inter-symbol interference.

[0074] Figure 4 4 is a diagram illustrating an example 400 associated with a QCL type for a spatially correlated SSB beam according to the present disclosure. Figure 4 As shown in , example 400 includes communications between a UE (eg, UE 120), a relay (eg, relay 122), and a network node (eg, network node 110). In some aspects, the UE, relay, and network node may be included in a wireless network (such as wireless network 100).

[0075] As shown in reference numeral 402, the repeater may receive TCI for multiple SSB beams from a network node. The repeater may receive downlink control information (DCI) indicating TCI for multiple SSB beams. The TCI may indicate a QCL type for spatial Tx parameters for multiple SSB beams. The QCL type for spatial Tx parameters may indicate that multiple SSB beams are Tx spatially correlated. Multiple SSB beams may be Tx spatially correlated in the same direction, or multiple SSB beams may be Tx spatially correlated plus an offset in the same direction. Multiple SSB beams may include downlink beams to be relayed from the repeater to the UE. Multiple SSB beams may be associated with uplink beams to be relayed by the repeater from the UE. Beam indices associated with multiple SSB beams may be Tx spatially correlated in the same direction, and the beam indices may be defined under the QCL type for both downlink and uplink. By signaling TCI, the network node can indicate that multiple SSB beams are spatially correlated, which can enable transparent beam management at the repeater.

[0076] In some aspects, a network node may send TCI to a relay on a downlink beam that the relay should relay to a UE (e.g., a serving UE). The network node may send TCI to the relay on an uplink beam that the relay should relay from the UE. The relay may receive TCI from the network node for a beam (e.g., an SSB beam) that is spatially correlated and directed toward the relay. The network node may define QCL Type E on the UE / relay Tx beam based at least in part on the TCI. QCL Type E may be newly defined for spatial Tx parameters. The network node may not have to instruct multiple UE uplink beams (e.g., all UE uplink beams) to arrive in the same direction as the UE downlink beam. The network node may define QCL Type E for spatial Tx parameters for multiple SSB beams (e.g., multiple downlink and / or uplink SSB beams) based at least in part on the TCI, and the multiple SSB beams may be spatially correlated in the same direction.

[0077] As shown in reference numeral 404, the repeater may receive multiple SSB beams from the network node according to the TCI. The multiple SSBs may be associated with a direction of the repeater. The repeater may receive the multiple SSB beams after receiving the TCI. The multiple SSB beams may be associated with a QCL type for spatial Tx parameters, which may indicate that the multiple SSB beams are spatially correlated (e.g., in the same direction).

[0078] As shown by reference numeral 406, the repeater may relay multiple SSB beams to the UE. The repeater may relay multiple SSB beams in multiple different spatial directions based at least in part on the beam management configuration. For example, the repeater may relay the SSB beams to different spatial directions according to a beam management algorithm, which may attempt to optimize the area in which it is deployed. The UE may receive multiple SSB beams from the repeater.

[0079] In some aspects, a repeater may be configured to relay multiple SSB beams to a UE in an outdoor-to-indoor scenario. A network node transmitting multiple SSBs may be in an outdoor environment. The repeater may be mounted, for example, in an indoor environment (e.g., on a window of a building), and the UE may be located within the indoor environment. In some aspects, a repeater may be configured to relay multiple SSB beams to a UE in an outdoor-to-outdoor scenario. A network node transmitting multiple SSBs may be in an outdoor environment. The repeater may be mounted, for example, in an outdoor environment (e.g., on the exterior of a building), and the UE may be located within the outdoor environment.

[0080] In some aspects, a repeater may send a capability indication to a network node, the capability indication indicating that the repeater can relay a signal with a defined latency (e.g., low latency) related to a cyclic prefix length of the signal. For example, during connection establishment of the repeater, the repeater may report to the network node the repeater's capability to relay a signal with low latency (e.g., compared to the cyclic prefix length). The network node may send a plurality of SSBs to the repeater based at least in part on the capability indication received from the repeater.

[0081] In some aspects, the UE may receive multiple SSB beams from a repeater. The UE may select an SSB beam from the multiple SSB beams, and the UE may send a random access channel (RACH) opportunity to the repeater. The repeater may receive a RACH opportunity from the UE on an indicated time slot of an applicable SSB index associated with a selected SSB beam from the multiple SSB beams. The repeater may relay the RACH opportunity to the network node based at least in part on the direction of the network node. The RACH opportunity may indicate to the network node that the UE is located within the area of ​​the repeater. In some aspects, after the UE identifies the SSB (e.g., the selected SSB beam) from the repeater, the UE may send a RACH opportunity on an indicated time slot of an applicable SSB index. The repeater may send a RACH opportunity in the same direction associated with the network node, and the network node may determine from the indicated RACH opportunity that the UE is located in the relay area domain.

[0082] In some aspects, the number associated with the multiple SSB beams may be based at least in part on the number of UEs in the cell. The network node may update the number associated with the multiple SSB beams directed to the repeater (e.g., in the TCI) based on the UE congestion level in the cell. For example, when multiple UEs are in the repeater area (e.g., in a conference room), the network node may determine to increase the number of SSB beams directed to the repeater so that the repeater can apply additional SSB beams during beam deployment.

[0083] In some aspects, the QCL type may indicate other configuration parameters, which may include parent beam information and sub-beam information and / or channel information. For example, QCL type E may include other configuration parameters, such as those typically included in QCL type D.

[0084] In some aspects, the network node may indicate TCI to the relay via other non-SSB channels or signals, such as via a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a physical downlink shared channel (PDSCH), a physical downlink control channel (PDCCH), a physical uplink shared channel (PUSCH), a sounding reference signal (SRS), or a physical uplink control channel (PUCCH). In other words, the network node may not necessarily indicate TCI only via SSB, but may indicate TCI via other non-SSB channels.

[0085] In some aspects, the relay may receive TCI from the network node, where the TCI may be indicated on an SSB channel or other non-SSB channel. After the TCI is defined, the network node may send a common configuration indication, which may indicate a beam change for multiple beams (e.g., all beams). The relay may relay the common configuration indication to the UE. The UE may perform beam switching based at least in part on the common configuration indication.

[0086] In some aspects, the relay may receive TCI from the network node, and the relay may send an indication of the TCI received from the network node to the UE. In other words, the relay may notify the UE of the TCI received by the relay from the network node. As a result, the UE may be notified of the TCI indicating the QCL type of the spatial Tx parameters for the multiple SSB beams.

[0087] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 Different than described.

[0088] Figure 5 is a diagram illustrating an example 500 associated with a QCL type for spatially correlated SSB beams according to the present disclosure.

[0089] like Figure 5 As shown in , in an outdoor to indoor scenario, a network node (e.g., a transmitter) may transmit multiple SSB beams (e.g., eight SSB beams). The network node may be associated with an outdoor environment. The first SSB beam (e.g., SSB #0), the second SSB beam (e.g., SSB #1), the seventh SSB beam (e.g., SSB #6), and the eighth SSB beam (e.g., SSB #7) may be associated with a single beam. The third SSB beam, the fourth SSB beam, the fifth SSB beam, and the sixth SSB beam (e.g., SSB #2 to SSB #5, respectively) may be associated with a QCL type E beam. The third SSB beam, the fourth SSB beam, the fifth SSB beam, and the sixth SSB beam may be spatially correlated according to a spatial Tx parameter and may be defined under QCL type E for both downlink and uplink. In other words, beam indices 2, 3, 4, and 5 may be Tx spatially correlated and may be defined under QCL type E for both downlink and uplink. The third SSB beam, the fourth SSB beam, the fifth SSB beam, and the sixth SSB beam may be associated with the same direction, wherein the same direction may correspond to the direction of the repeater. The repeater may receive multiple SSB beams from the network node, including the third SSB beam, the fourth SSB beam, the fifth SSB beam, and the sixth SSB beam. The repeater may be located in a window of the structure. The repeater may relay the third SSB beam, the fourth SSB beam, the fifth SSB beam, and the sixth SSB beam that may be received by the UE (e.g., a receiver). The UE may be associated with an internal environment. The repeater may facilitate communication between the network node and the UE.

[0090] As indicated above, Figure 5 are provided as examples. Other examples can be found in the Figure 5 Different than described.

[0091] Figure 6 is a diagram illustrating an example 600 associated with a QCL type for spatially correlated SSB beams according to the present disclosure.

[0092] like Figure 6As shown in , in an outdoor to outdoor scenario, a network node (e.g., a transmitter) may transmit multiple SSB beams (e.g., seven SSB beams). The network node may be associated with an outdoor environment. The first SSB beam (e.g., SSB #0), the second SSB beam (e.g., SSB #1), the sixth SSB beam (e.g., SSB #6), and the seventh SSB beam (e.g., SSB #7) may be associated with a single beam. The third SSB beam, the fourth SSB beam, and the fifth SSB beam (e.g., SSB #2 to SSB #4, respectively) may be associated with a QCL type E beam. The third SSB beam, the fourth SSB beam, and the fifth SSB beam may be spatially correlated according to the spatial Tx parameters and may be defined under QCL type E for both the downlink and the uplink. In other words, beam indices 2, 3, and 4 may be Tx spatially correlated and may be defined under QCL type E for both the downlink and the uplink. The third SSB beam, the fourth SSB beam, and the fifth SSB beam may be associated with the same direction, where the same direction may correspond to the direction of the repeater. The repeater may receive multiple SSB beams from the network node, including the third SSB beam, the fourth SSB beam, and the fifth SSB beam. The repeater may be located outside the building. The network node may send the third SSB beam, the fourth SSB beam, and the fifth SSB beam to the repeater, which may enable the third SSB beam, the fourth SSB beam, and the fifth SSB beam to bypass obstructions such as trees between the network node and the UE (e.g., a receiver). The repeater may relay the third SSB beam, the fourth SSB beam, and the fifth SSB beam that may be received by the UE. The UE may also be associated with an outdoor environment.

[0093] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 Different than described.

[0094] Figure 7 is a diagram illustrating an example process 700 performed, for example, by a repeater according to the present disclosure. Example process 700 is an example of a repeater (eg, repeater 122) performing operations associated with a QCL type for spatially correlated SSB beams.

[0095] like Figure 7 As shown in , in some aspects, process 700 may include receiving TCI for multiple SSB beams from a network node, wherein the TCI indicates a QCL type for spatial Tx parameters for the multiple SSB beams, and the QCL type for the spatial Tx parameters indicates that the multiple SSB beams are Tx spatially correlated (block 710). For example, a repeater (e.g., using Fig. 9The receiving component 902 depicted in FIG. 1 may receive TCI for multiple SSB beams from a network node, wherein the TCI indicates a QCL type for spatial Tx parameters for the multiple SSB beams, and the QCL type for the spatial Tx parameters indicates that the multiple SSB beams are Tx spatially correlated, as described above.

[0096] like Figure 7 As further shown in FIG. 7 , in some aspects, process 700 may include receiving a plurality of SSB beams from a network node based on a TCI, wherein the plurality of SSBs are associated with a direction of a repeater (block 720). For example, a repeater (e.g., using Fig. 9 The receiving component 902 depicted in FIG. 1 can receive multiple SSB beams from a network node based on the TCI, wherein the multiple SSBs are associated with the direction of the repeater, as described above.

[0097] like Figure 7 As further shown in FIG. 7 , in some aspects, process 700 may include relaying the plurality of SSB beams to the UE (block 730). For example, as described above, a repeater (e.g., using Fig. 9 The transmitting component 904 depicted in FIG. 1 may relay multiple SSB beams to the UE.

[0098] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0099] In a first aspect, process 700 includes relaying a plurality of SSB beams in a plurality of different spatial directions based at least in part on a beam management configuration.

[0100] In a second aspect, alone or in combination with the first aspect, beam indices associated with multiple SSB beams are Tx spatially correlated in the same direction, and the beam indices are defined under QCL type for both downlink and uplink.

[0101] In a third aspect, alone or in combination with one or more of the first and second aspects, the plurality of SSB beams includes a downlink beam to be relayed from the repeater to the UE.

[0102] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the plurality of SSB beams include an uplink beam to be relayed from the UE by a repeater.

[0103] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, process 700 includes sending a capability indication to a network node, the capability indication indicating that the relay can relay the signal with a defined delay related to a cyclic prefix length of the signal.

[0104] In a sixth aspect, either alone or in combination with one or more of aspects 1 to 5, process 700 includes receiving a RACH opportunity from a UE at an indicated time slot of an applicable SSB index associated with a selected SSB beam among a plurality of SSB beams; and relaying the RACH opportunity to a network node based at least in part on a direction, wherein the RACH opportunity indicates that the UE is located within a region of the relay.

[0105] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the number associated with the plurality of SSB beams is based at least in part on the number of UEs in the cell.

[0106] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the QCL type indication includes other configuration parameters of parent beam information and sub-beam information and channel information.

[0107] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the repeater is configured to relay multiple SSB beams to the UE in an outdoor-to-indoor scenario or in an outdoor-to-outdoor scenario.

[0108] although Figure 7 An example block diagram of process 700 is shown, but in some aspects, process 700 may include Figure 7 The blocks depicted may be additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 700 may be performed in parallel.

[0109] Figure 8 is a diagram illustrating an example process 800 performed, for example, by a network node in accordance with the present disclosure. The example process 800 is an example of a network node (eg, the network node 110) performing operations associated with a QCL type for spatially correlated SSB beams.

[0110] like Figure 8 As shown in , in some aspects, process 800 may include sending a TCI for multiple SSB beams to a repeater, wherein the TCI indicates a QCL type for a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated (block 810). For example, as described above, a network node (e.g., using Fig.10 The transmitting component 1004 depicted in FIG. 1 may transmit TCI for multiple SSB beams to the repeater, wherein the TCI indicates a QCL type for spatial Tx parameters of the multiple SSB beams, and the QCL type for the spatial Tx parameters indicates that the multiple SSB beams are Tx spatially correlated.

[0111] like Figure 8As further shown in FIG. 8 , in some aspects, process 800 may include sending the plurality of SSB beams to a relay for relaying to a UE according to the TCI, wherein the plurality of SSBs are associated with a direction of the relay (block 820). Fig.10 The transmitting component 1004 depicted in FIG. 1 may transmit a plurality of SSB beams to a repeater for relaying to a UE according to the TCI, wherein the plurality of SSBs are associated with a direction of the repeater, as described above.

[0112] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0113] In a first aspect, beam indices associated with multiple SSB beams are Tx spatially correlated in the same direction, and the beam indices are defined under QCL type for both downlink and uplink.

[0114] In a second aspect, either alone or in combination with the first aspect, the plurality of SSB beams include downlink beams to be relayed from a repeater to a UE, or the plurality of SSB beams include uplink beams to be relayed by a repeater from a UE.

[0115] In a third aspect, alone or in combination with one or more of the first and second aspects, process 800 includes receiving a capability indication from a repeater, the capability indication indicating that the repeater is capable of repeating a signal with a defined delay related to a cyclic prefix length of the signal.

[0116] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, process 800 includes receiving a RACH opportunity from a UE via a repeater on an indicated time slot of an applicable SSB index associated with a selected SSB beam among a plurality of SSB beams, wherein the RACH opportunity indicates that the UE is within a region of the repeater.

[0117] although Figure 8 An example block diagram of process 800 is shown, but in some aspects, process 800 may include Figure 8 The blocks depicted may be additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 800 may be performed in parallel.

[0118] Fig. 9is a diagram of an example apparatus 900 for wireless communication according to the present disclosure. Apparatus 900 may be a repeater, or a repeater may include apparatus 900. In some aspects, apparatus 900 includes a receiving component 902 and a transmitting component 904, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 900 may communicate with another apparatus 906 (such as a UE, a base station, or another wireless communication device) using receiving component 902 and transmitting component 904.

[0119] In some aspects, the apparatus 900 may be configured to perform Figures 4 to 6 Additionally or alternatively, the apparatus 900 may be configured to perform one or more processes described herein, such as Figure 7 The process 700. In some aspects, Fig. 9 The apparatus 900 and / or one or more components shown in FIG. 1 may include a combination of Figure 2 Additionally or alternatively, Fig. 9 One or more of the components shown in the figure may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as an instruction or code stored in a non-transitory computer-readable medium, and the instruction or code may be executed by a controller or processor to perform the function or operation of the component.

[0120] The receiving component 902 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 906. The receiving component 902 may provide the received communications to one or more other components of the device 900. In some aspects, the receiving component 902 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 900. In some aspects, the receiving component 902 may include combining Figure 2 The repeater may include one or more antennas, modems, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof.

[0121] The transmitting component 904 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 906. In some aspects, one or more other components of the device 900 may generate communications and may provide the generated communications to the transmitting component 904 for transmission to the device 906. In some aspects, the transmitting component 904 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 906. In some aspects, the transmitting component 904 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the repeater. In some aspects, the transmit component 904 can be co-located with the receive component 902 in a transceiver.

[0122] The receiving component 902 may receive TCI for multiple SSB beams from a network node, wherein the TCI indicates a QCL type for a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated. The receiving component 902 may receive multiple SSB beams from the network node according to the TCI, wherein the multiple SSBs are associated with a direction of a repeater. The transmitting component 1004 may relay the multiple SSB beams to the UE.

[0123] The transmitting component 904 can transmit a capability indication to the network node, the capability indication indicating that the repeater can relay the signal with a defined delay related to a cyclic prefix length of the signal. The receiving component 902 can receive a RACH opportunity from the UE at an indicated time slot of an applicable SSB index associated with a selected SSB beam of the plurality of SSB beams. The transmitting component 904 can relay the RACH opportunity to the network node based at least in part on the direction, wherein the RACH opportunity indicates that the UE is located within the region of the repeater.

[0124] Fig. 9 The number and arrangement of components shown in the diagram are provided as examples. In practice, there may be Fig. 9 Additional components, fewer components, different components, or components arranged differently than those shown in FIG. Fig. 9 Two or more components shown in may be implemented in a single component, or Fig. 9 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig. 9 The component set (one or more components) shown in the executable is described as being composed of Fig. 9 Another component shown may be a collection of components that perform one or more functions.

[0125] Fig.101 is a diagram of an example apparatus 1000 for wireless communication according to the present disclosure. Apparatus 1000 may be a network node, or a network node may include apparatus 1000. In some aspects, apparatus 1000 includes a receiving component 1002 and a transmitting component 1004, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1000 may communicate with another apparatus 1006 (such as a UE, a base station, or another wireless communication device) using receiving component 1002 and transmitting component 1004.

[0126] In some aspects, the apparatus 1000 may be configured to perform Figures 4 to 6 Additionally or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein, such as Figure 8 The process 800. In some aspects, Fig.10 The apparatus 1000 and / or one or more components shown in FIG. 1 may include a combination of Figure 2 One or more components of the network node. Additionally or alternatively, Fig.10 One or more of the components shown in the figure may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as an instruction or code stored in a non-transitory computer-readable medium, and the instruction or code may be executed by a controller or processor to perform the function or operation of the component.

[0127] The receiving component 1002 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1006. The receiving component 1002 may provide the received communications to one or more other components of the device 1000. In some aspects, the receiving component 1002 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 1000. In some aspects, the receiving component 1002 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receiving processors, controllers / processors, memories or combinations thereof of the network node.

[0128] The transmitting component 1004 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1006. In some aspects, one or more other components of the device 1000 may generate communications and may provide the generated communications to the transmitting component 1004 for transmission to the device 1006. In some aspects, the transmitting component 1004 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1006. In some aspects, the transmitting component 1004 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the network node. In some aspects, the transmit component 1004 can be co-located with the receive component 1002 in a transceiver.

[0129] The transmitting component 1004 may transmit TCI for multiple SSB beams to the repeater, wherein the TCI indicates a QCL type for a spatial Tx parameter for the multiple SSB beams, and the QCL type for the spatial Tx parameter indicates that the multiple SSB beams are Tx spatially correlated. The transmitting component 1004 may transmit multiple SSB beams to the repeater for relaying to the UE according to the TCI, wherein the multiple SSBs are associated with a direction of the repeater.

[0130] The receiving component 1002 can receive a capability indication from the repeater, the capability indication indicating that the repeater can relay the signal with a defined delay related to a cyclic prefix length of the signal. The receiving component 1002 can receive a RACH opportunity from the UE via the repeater on an indicated time slot of an applicable SSB index associated with a selected SSB beam of the plurality of SSB beams, wherein the RACH opportunity indicates that the UE is located within a region of the repeater.

[0131] Fig.10 The number and arrangement of components shown in the diagram are provided as examples. In practice, there may be Fig.10 Additional components, fewer components, different components, or components arranged differently than those shown in FIG. Fig.10 Two or more components shown in may be implemented in a single component, or Fig.10 The single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Fig.10 The component set (one or more components) shown in the executable is described as being composed of Fig.10 One or more functions performed by another component collection shown in .

[0132] The following provides an overview of some aspects of the disclosure:

[0133] Aspect 1: A method of wireless communication performed by a repeater, the method comprising: receiving a transmit configuration indication (TCI) for multiple synchronization signal block (SSB) beams from a network node, wherein: the TCI indicates a quasi-co-location (QCL) type of spatial transmission (Tx) parameters for the multiple SSB beams, and the QCL type for the spatial Tx parameters indicates that the multiple SSB beams are Tx spatially correlated; receiving the multiple SSB beams from the network node according to the TCI, wherein the multiple SSBs are associated with a direction of the repeater; and relaying the multiple SSB beams to a user equipment (UE).

[0134] Aspect 2: The method according to aspect 1, wherein relaying the multiple SSB beams includes relaying the multiple SSB beams in multiple different spatial directions based at least in part on a beam management configuration.

[0135] Aspect 3: A method according to any one of Aspects 1 to 2, wherein the beam indices associated with the multiple SSB beams are Tx spatially correlated in the same direction, and wherein the beam indices are defined under the QCL type for both downlink and uplink.

[0136] Aspect 4: The method according to any one of aspects 1 to 3, wherein the multiple SSB beams include a downlink beam to be relayed from the repeater to the UE.

[0137] According to 5: According to the method according to any one of claims 1 to 4, the multiple SSB beams include an uplink beam to be relayed by the repeater from the UE.

[0138] Aspect 6: According to the method of any one of aspects 1 to 5, the method further comprises: sending a capability indication to the network node, the capability indication indicating that the relay can relay the signal with a defined delay related to the cyclic prefix length of the signal.

[0139] Aspect 7: According to any one of Aspects 1 to 6, the method also includes: receiving a random access channel (RACH) opportunity from the UE on an indicated time slot of an applicable SSB index associated with a selected SSB beam among the multiple SSB beams; and relaying the RACH opportunity to the network node based at least in part on the direction, wherein the RACH opportunity indicates that the UE is located within the area of ​​the repeater.

[0140] Aspect 8: A method according to any one of aspects 1 to 7, wherein the number associated with the multiple SSB beams is at least partially based on the number of UEs in the cell.

[0141] Aspect 9: The method according to any one of Aspects 1 to 8, wherein the QCL type indicates other configuration parameters, and the other configuration parameters include: parent beam information and sub-beam information, and channel information.

[0142] Aspect 10: The method according to any one of aspects 1 to 9, wherein the repeater is configured to relay the multiple SSB beams to the UE in an outdoor-to-indoor scenario or in an outdoor-to-outdoor scenario.

[0143] Aspect 11: A method of wireless communication performed by a network node, the method comprising: sending a transmit configuration indication (TCI) for multiple synchronization signal block (SSB) beams to a repeater, wherein: the TCI indicates a quasi-co-location (QCL) type of spatial transmission (Tx) parameters for the multiple SSB beams, and the QCL type for the spatial Tx parameters indicates that the multiple SSB beams are Tx spatially correlated; and sending the multiple SSB beams to the repeater for relaying to a user equipment (UE) according to the TCI, wherein the multiple SSBs are associated with a direction of the repeater.

[0144] Aspect 12: The method according to aspect 11, wherein beam indices associated with the multiple SSB beams are Tx spatially correlated in the same direction, and wherein the beam indices are defined under the QCL type for both downlink and uplink.

[0145] Aspect 13: A method according to any one of Aspects 11 to 12, wherein: the multiple SSB beams include a downlink beam to be relayed from the repeater to the UE; or the multiple SSB beams include an uplink beam to be relayed by the repeater from the UE.

[0146] Aspect 14: According to the method according to any one of aspects 11 to 13, the method further includes: receiving a capability indication from the repeater, the capability indication indicating that the repeater can relay the signal with a defined delay related to the cyclic prefix length of the signal.

[0147] Aspect 15: According to any one of Aspects 11 to 14, the method further includes: receiving a random access channel (RACH) opportunity from the UE via the repeater on an indicated time slot of an applicable SSB index associated with a selected SSB beam among the multiple SSB beams, wherein the RACH opportunity indicates that the UE is located within the area of ​​the repeater.

[0148] Aspect 16: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to one or more of Aspects 1 to 10.

[0149] Aspect 17: A device for wireless communication, the device comprising: a memory and one or more processors, the one or more processors being coupled to the memory, the one or more processors being configured to execute the method according to one or more of aspects 1 to 10.

[0150] Aspect 18: An apparatus for wireless communication, the apparatus comprising: at least one means for performing the method according to one or more aspects of aspects 1 to 10.

[0151] Aspect 19: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 10.

[0152] Aspect 20: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions, which, when executed by one or more processors of a device, causes the device to perform the method according to one or more aspects of aspects 1 to 10.

[0153] of the repeater.

[0154] Aspect 21: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to one or more of Aspects 11 to 15.

[0155] Aspect 22: A device for wireless communication, the device comprising: a memory and one or more processors, the one or more processors being coupled to the memory, the one or more processors being configured to execute the method according to one or more of Aspects 11 to 15.

[0156] Aspect 23: An apparatus for wireless communication, the apparatus comprising: at least one means for performing the method according to one or more of aspects 11 to 15.

[0157] Aspect 24: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 11 to 15.

[0158] Aspect 25: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions, which, when executed by one or more processors of a device, causes the device to perform a method according to one or more of aspects 11 to 15.

[0159] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0160] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by a combination of hardware and / or hardware and software in different forms. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, there is no reference to a specific software code herein to describe the operation and behavior of the system and / or method, because those skilled in the art will understand that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0161] As used herein, "satisfying a threshold" may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0162] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner that is not specifically described in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (which includes a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, as well as any combination with multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other ordering of a, b and c).

[0163] Any element, action or instruction used herein should not be interpreted as key or necessary unless explicitly described as such. In addition, as used herein, the article "one" is intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only one item is intended to be referred to, the phrase "only one" or similar terms will be used. Moreover, as used herein, the term "having" etc. is intended to be an open term, which does not limit the elements they modify (for example, "having" A elements can also have B). In addition, the phrase "based on" is intended to mean "based at least in part on", unless explicitly stated otherwise. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless explicitly stated otherwise (eg, if used in conjunction with "either" or "only one of").

Claims

1. A repeater for wireless communication, the repeater comprising: Memory; and one or more processors coupled to the memory, the memory comprising instructions executable by the one or more processors to cause the repeater to: A transmit configuration indication (TCI) for a plurality of synchronization signal block (SSB) beams is received from a network node, wherein: The TCI indicates a quasi co-location (QCL) type of spatial transmission (Tx) parameters for the plurality of SSB beams, and The QCL type for the spatial Tx parameter indicates that the plurality of SSB beams are Tx spatially correlated; receiving the plurality of SSB beams from the network node according to the TCI, wherein the plurality of SSBs are associated with a direction of the repeater; and The plurality of SSB beams are relayed to a user equipment (UE).

2. The repeater of claim 1 , wherein the instructions executable to cause the repeater to relay the plurality of SSB beams are executable to cause the repeater to relay the plurality of SSB beams in a plurality of different spatial directions based at least in part on a beam management configuration.

3. The repeater of claim 1 , wherein beam indices associated with the plurality of SSB beams are Tx spatially correlated in the same direction, and wherein the beam indices are defined under the QCL type for both downlink and uplink.

4. The repeater of claim 1, wherein the plurality of SSB beams comprises a downlink beam to be relayed from the repeater to the UE.

5. The repeater of claim 1, wherein the plurality of SSB beams include an uplink beam to be relayed by the repeater from the UE.

6. The repeater of claim 1 , wherein the memory further comprises instructions executable by the one or more processors to cause the repeater to: A capability indication is sent to the network node, the capability indication indicating that the relay is capable of relaying the signal with a defined delay related to a cyclic prefix length of the signal.

7. The repeater of claim 1 , wherein the memory further comprises instructions executable by the one or more processors to cause the repeater to: receiving a random access channel (RACH) opportunity from the UE at the indicated time slot of the applicable SSB index associated with the selected SSB beam of the plurality of SSB beams; and The RACH opportunity is relayed to the network node based at least in part on the direction, wherein the RACH opportunity indicates that the UE is within a region of the relay.

8. The repeater of claim 1, wherein a number associated with the plurality of SSB beams is based at least in part on a number of UEs in a cell.

9. The repeater of claim 1 , wherein the QCL type indicates other configuration parameters, the other configuration parameters comprising: Parent beam information, sub-beam information, and channel information.

10. The repeater of claim 1, wherein the repeater is configured to relay the plurality of SSB beams to the UE in an outdoor-to-indoor scenario or in an outdoor-to-outdoor scenario.

11. A network node for wireless communication, the network node comprising: Memory; and one or more processors, the one or more processors coupled to the memory, the memory comprising instructions executable by the one or more processors to cause the network node to: A transmit configuration indication (TCI) is sent to a repeater for a plurality of synchronization signal block (SSB) beams, wherein: The TCI indicates a quasi co-location (QCL) type of spatial transmission (Tx) parameters for the plurality of SSB beams, and The QCL type for the spatial Tx parameter indicates that the plurality of SSB beams are Tx spatially correlated; as well as The plurality of SSB beams are transmitted to the relay for relaying to a user equipment (UE) according to the TCI, wherein the plurality of SSBs are associated with a direction of the relay.

12. The network node of claim 11, wherein beam indices associated with the plurality of SSB beams are Tx spatially correlated in the same direction, and wherein the beam indices are defined under the QCL type for both downlink and uplink.

13. The network node according to claim 11, wherein: The plurality of SSB beams include a downlink beam to be relayed from the repeater to the UE; or The plurality of SSB beams include an uplink beam to be relayed by the repeater from the UE.

14. The network node of claim 11, wherein the memory further comprises instructions executable by the one or more processors to cause the network node to: A capability indication is received from the repeater, the capability indication indicating that the repeater is capable of repeating the signal with a defined delay related to a cyclic prefix length of the signal.

15. The network node of claim 11, wherein the memory further comprises instructions executable by the one or more processors to cause the network node to: A random access channel (RACH) opportunity is received from the UE via the relay on an indicated time slot of an applicable SSB index associated with a selected SSB beam of the plurality of SSB beams, wherein the RACH opportunity indicates that the UE is located within a region of the relay.

16. A method of wireless communication performed by a repeater, the method comprising: A transmit configuration indication (TCI) for a plurality of synchronization signal block (SSB) beams is received from a network node, wherein: The TCI indicates a quasi co-location (QCL) type of spatial transmission (Tx) parameters for the plurality of SSB beams, and The QCL type for the spatial Tx parameter indicates that the plurality of SSB beams are Tx spatially correlated; receiving the plurality of SSB beams from the network node according to the TCI, wherein the plurality of SSBs are associated with a direction of the repeater; and The plurality of SSB beams are relayed to a user equipment (UE).

17. The method of claim 16, wherein relaying the plurality of SSB beams comprises relaying the plurality of SSB beams in a plurality of different spatial directions based at least in part on a beam management configuration.

18. The method of claim 16, wherein beam indices associated with the plurality of SSB beams are Tx spatially correlated in the same direction, and wherein the beam indices are defined under the QCL type for both downlink and uplink.

19. The method of claim 16, wherein the plurality of SSB beams comprises a downlink beam to be relayed from the repeater to the UE.

20. The method of claim 16, wherein the plurality of SSB beams comprises an uplink beam to be relayed by the repeater from the UE.

21. The method according to claim 16, further comprising: A capability indication is sent to the network node, the capability indication indicating that the relay is capable of relaying the signal with a defined delay related to a cyclic prefix length of the signal.

22. The method according to claim 16, further comprising: receiving a random access channel (RACH) opportunity from the UE at the indicated time slot of the applicable SSB index associated with the selected SSB beam of the plurality of SSB beams; as well as The RACH opportunity is relayed to the network node based at least in part on the direction, wherein the RACH opportunity indicates that the UE is within a region of the relay.

23. The method of claim 16, wherein a number associated with the plurality of SSB beams is based at least in part on a number of UEs in a cell.

24. The method of claim 16, wherein the QCL type indicates other configuration parameters, the other configuration parameters comprising: Parent beam information, sub-beam information, and channel information.

25. The method of claim 16, wherein the repeater is configured to relay the plurality of SSB beams to the UE in an outdoor-to-indoor scenario or in an outdoor-to-outdoor scenario.

26. A method of wireless communication performed by a network node, the method comprising: A transmit configuration indication (TCI) is sent to a repeater for a plurality of synchronization signal block (SSB) beams, wherein: The TCI indicates a quasi co-location (QCL) type of spatial transmission (Tx) parameters for the plurality of SSB beams, and The QCL type for the spatial Tx parameter indicates that the plurality of SSB beams are Tx spatially correlated; and The plurality of SSB beams are transmitted to the relay for relaying to a user equipment (UE) according to the TCI, wherein the plurality of SSBs are associated with a direction of the relay.

27. The method of claim 26, wherein beam indices associated with the plurality of SSB beams are Tx spatially correlated in the same direction, and wherein the beam indices are defined under the QCL type for both downlink and uplink.

28. The method of claim 26, wherein: The plurality of SSB beams include a downlink beam to be relayed from the repeater to the UE; or The plurality of SSB beams include an uplink beam to be relayed by the repeater from the UE.

29. The method according to claim 26, further comprising: A capability indication is received from the repeater, the capability indication indicating that the repeater is capable of repeating the signal with a defined delay related to a cyclic prefix length of the signal.

30. The method of claim 26, further comprising: A random access channel (RACH) opportunity is received from the UE via the relay on an indicated time slot of an applicable SSB index associated with a selected SSB beam of the plurality of SSB beams, wherein the RACH opportunity indicates that the UE is located within a region of the relay.

Images