Indication of synchronization signal block attributes for single frequency networks

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive synchronization signal block (SSB) information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB. The UE may monitor the SSBs, determine one or more beams providing the SSBs based at least in part on the SSB information, and direct one or more receive beams toward the one or more beams. Many other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 007,050, filed on April 8, 2020, entitled “INDICATION OF SYNCHRONIZATION SIGNAL BLOCK PROPERTIES OF SINGLE FREQUENCY NETWORKS,” and U.S. Non-Provisional Patent Application No. 17 / 222,661, filed on April 5, 2021, entitled “INDICATION OF SYNCHRONIZATION SIGNAL BLOCK PROPERTIES OF SINGLE FREQUENCY NETWORKS,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for indicating synchronization signal block attributes for a single frequency network. Background Art

[0004] Wireless communication systems are widely deployed to provide various 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). 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 collection 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 multiple base stations (BSs) that may support communications for multiple user equipment (UEs). A UE may communicate with a BS via a downlink and an uplink. A "downlink" or "forward link" refers to a communication link from a BS to a UE, and an "uplink" or "reverse link" refers to a communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, or 5G Node B.

[0006] The above multiple access technologies have been adopted by various telecommunication standards to provide a common protocol that enables different user equipment to communicate at the municipal, national, regional and even global levels. NR (which may also be referred to as 5G) is a collection of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also referred to as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation to better support mobile broadband network access. However, as the demand for mobile broadband access continues to increase, there is a need for further improvements in LTE, NR and other wireless access technologies. Summary of the invention

[0007] In some aspects, a method of performing wireless communications by a user equipment (UE) may include receiving synchronization signal block (SSB) information indicating, for each respective SSB of one or more SSBs, how many beams are associated with the respective SSB. The method may include monitoring the SSBs, determining one or more beams providing the SSBs based at least in part on the SSB information, and directing one or more receive beams toward the one or more beams.

[0008] In some aspects, a method of wireless communication performed by a base station may include: determining SSB information indicating how many number of beams are associated with each respective SSB in one or more SSBs, and sending the SSB information to a UE.

[0009] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to receive SSB information indicating how many number of beams are associated with each respective SSB in one or more SSBs. The UE may monitor the SSBs, determine one or more beams providing the SSBs based at least in part on the SSB information, and direct one or more receive beams toward the one or more beams.

[0010] In some aspects, a base station for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to determine SSB information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB, and to send the SSB information to a UE.

[0011] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to receive SSB information indicating how many number of beams are associated with each respective SSB of one or more SSBs, monitor the SSBs, determine one or more beams providing the SSBs based at least in part on the SSB information, and direct one or more receive beams toward the one or more beams.

[0012] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to determine SSB information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB, and send the SSB information to a UE.

[0013] In some aspects, an apparatus for wireless communication may include: a unit for receiving SSB information, wherein the SSB information indicates how many number of beams are associated with each respective SSB in one or more SSBs, a unit for monitoring the SSBs, a unit for determining one or more beams providing the SSBs based at least in part on the SSB information, and a unit for directing one or more receive beams toward the one or more beams.

[0014] In some aspects, an apparatus for wireless communication may include: a unit for determining SSB information, wherein the SSB information indicates how many number of beams are associated with each respective SSB in one or more SSBs, and a unit for sending the SSB information to a UE.

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

[0016] The features and technical advantages of the examples have been outlined quite extensively above in accordance with the present disclosure so that the specific embodiments that follow can be better understood. Additional features and advantages will be described below. For the same purpose of achieving the present disclosure, the disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and method of operation) together with the associated advantages will be better understood from the following description. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description, and is not intended to limit the scope of the claims.

[0017] Although various aspects and embodiments are described in this application by way of illustration of some examples, it will be understood by those skilled in the art that other implementations and use cases may occur in a variety of different arrangements and scenarios. The innovation described herein may be implemented across multiple different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, embodiments and / or uses may be generated via integrated chip embodiments and other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchase devices, medical devices, AI-enabled devices, etc.). Although some examples may or may not be specifically targeted at use cases or applications, various applicability of the described innovations may occur. Implementations may be in the spectrum range from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems containing one or more aspects of the described innovations. In some practical settings, the device containing the various aspects and features described may also necessarily include additional components and features for the implementation and implementation of the claimed and described embodiments. For example, the transmission and reception of wireless signals necessarily includes multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / accumulators, etc.). It is intended that the innovations described herein may be implemented in a wide variety of devices, chip-level components, systems, distributed equipment, end-user devices, etc., of varying sizes, shapes, and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order that the above-mentioned features of the present disclosure may be understood in detail, the contents briefly summarized above may be described in more detail 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 since the specification may admit other equally effective aspects, they are not considered to be limiting of the scope thereof. The same reference numerals in different drawings may identify the same or similar elements.

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

[0020] Figure 2 is a schematic diagram showing an example of a base station communicating with a user equipment (UE) in a wireless communication network according to the present disclosure.

[0021] Figure 3 An example logical architecture of a distributed wireless access network in accordance with aspects of the present disclosure is shown.

[0022] Figure 4 is a schematic diagram illustrating an example of multiple transmit receive point (TRP) communications according to the present disclosure.

[0023] Figure 5 is a diagram illustrating an example of TRP for sending data on the same frequency resource according to the present disclosure.

[0024] Figure 6 is a diagram illustrating an example of a TRP for sending a synchronization signal block (SSB) to a UE on a high-speed train according to the present disclosure.

[0025] Figure 7 is a diagram illustrating an example of beams of a single frequency network (SFN) that are not transparent to a UE according to the present disclosure.

[0026] Figure 8 is a diagram illustrating an example of an SSB attribute indicating an SFN according to the present disclosure.

[0027] Fig. 9 is a diagram illustrating an example of an SSB attribute indicating an SFN according to the present disclosure.

[0028] Fig.10 is a diagram illustrating an example of an SSB attribute indicating an SFN according to the present disclosure.

[0029] Fig.11 is a schematic diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0030] Fig.12 is a schematic diagram illustrating an example process performed, for example, by a base station according to the present disclosure. DETAILED DESCRIPTION

[0031] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure may be embodied in a variety of different forms, and should not be construed as being limited to any specific structure or function given throughout the present disclosure. To be precise, these aspects are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, it should be appreciated by those skilled in the art that, whether implemented independently of any other aspects of the present disclosure, or implemented in combination with any other aspects of the present disclosure, the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein. For example, a device may be implemented or a method may be implemented using any number of aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such a device or method implemented using other structures, functions, or structures and functions that are supplementary to or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements in the claims.

[0032] 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.

[0033] It should be noted that although various aspects may be described herein using terminology commonly associated with 5G or NR radio access technologies (RATs), various aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or RATs subsequent to 5G (e.g., 6G).

[0034] Figure 11 is a schematic diagram showing an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network, as well as other examples. The wireless network 100 may include a plurality of base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that can communicate with a user equipment (UE), and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, or transmit receive point (TRP). Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0035] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NRBS", "gNB", "TRP", "AP", "Node B", "5G NB", and "cell" may be used interchangeably herein.

[0036] In some aspects, the cell may not necessarily be stationary, and the geographic area of ​​the cell may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces (such as direct physical connections or virtual networks) using any suitable transport network.

[0037] The wireless network 100 may also include a relay station. A relay station is an entity that receives transmissions of data from an upstream station (e.g., a BS or a UE) and sends transmissions of data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown, a relay BS 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay BS may also be referred to as a relay station, a relay base station, or a relay.

[0038] The wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, and / or relay BSs. These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico BS, a femto BS, and a relay BS may have a low transmit power level (e.g., 0.1 watt to 2 watts).

[0039] The network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly via a wireless backhaul or a wired backhaul.

[0040] UE 120 (e.g., UE 120a, UE 120b, UE 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc. UE 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, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or medical equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music device or video device, or a satellite radio unit), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless medium or a wired medium.

[0041] Some UEs may be considered as machine type communication (MTC) UEs or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors and / or location tags, which may communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node may provide a connection to or provide a connection to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired communication link or a wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as user premises equipment (CPE). UE 120 may be included in a housing containing components of UE 120 (e.g., processor components and / or memory components). In some aspects, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0042] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific RAT and may operate on one or more frequencies. RAT may also be referred to as radio technology and / or air interface. Frequency may also be referred to as carrier and / or frequency channel. 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.

[0043] In some aspects, (e.g., without using base station 110 as an intermediary to communicate with each other) two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can use one or more sidelink channels to communicate directly. For example, UE 120 can use peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol or vehicle-to-infrastructure (V2I) protocol) and / or mesh network to communicate. In this case, UE 120 can perform scheduling operations, resource selection operations and / or other operations described elsewhere herein as being performed by base station 110.

[0044] As indicated above, provide Figure 1 As an example. Other examples can be compared with Figure 1 The examples described are different.

[0045] Devices in the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various categories, frequency bands, channels, etc. based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating frequency band having a first frequency range (FR1), which can span from 410 MHz to 7.125 GHz, and / or can communicate using an operating frequency band having a second frequency range (FR2), which can span from 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is larger than 6 GHz, FR1 is often referred to as a "sub-6 GHz" band. Similarly, FR2 is often referred to as a "millimeter wave" band, although different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as a "millimeter wave" band by the International Telecommunication Union (ITU). Therefore, unless otherwise expressly stated, it should be understood that the term "below 6 GHz" and the like, if used herein, can broadly refer to frequencies below 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., frequencies greater than 7.125 GHz). Similarly, unless otherwise expressly stated, it should be understood that the term "millimeter wave" and the like, if used herein, can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., below 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein can be applicable to those modified frequency ranges.

[0046] Figure 2 is a diagram illustrating an example 200 of a base station 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The base station 110 may be equipped with T antennas 234a through 234t and the UE 120 may be equipped with R antennas 252a through 252r, where in general, T≥1 and R≥1.

[0047] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS), demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0048] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations, and may provide received signals to demodulators (DEMOD) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), and / or CQI, among other examples.In some aspects, one or more components of UE 120 may be included in a housing.

[0049] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. For example, the network controller 130 may include one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0050] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include, or may be included within, one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, as well as other examples. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antennas coupled to one or more transmitting components and / or receiving components (such as Figure 2 One or more antenna elements of one or more components).

[0051] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262, as well as control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from a controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in a modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antenna 252, modulator and / or demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., as described with reference to Figure 1-12 aspects described).

[0052] At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate to the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 to schedule the UE 120 for downlink communication and / or uplink communication. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of the base station 110 may be included in a modem of the base station 110. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modulators and / or demodulators 232, MIMO detectors 236, receive processors 238, transmit processors 220, and / or TX MIMO processors 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., as described with reference to Figure 1-12 aspects described).

[0053] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the may perform one or more techniques associated with indicating a synchronization signal block (SSB) attribute of a single frequency network (SFN), as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component may perform or direct e.g. Fig.11 Process 1100, Fig.12 1200 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, conversion and / or interpretation), may cause one or more processors, UE 120 and / or base station 110 to perform or direct, for example Fig.12 Process 1100, Fig.12 The operations of process 1200 and / or other processes as described herein. In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, among other examples.

[0054] In some aspects, UE 120 may include: a unit for receiving SSB information, wherein the SSB information indicates how many number of beams are associated with each respective SSB in one or more SSBs, a unit for monitoring the SSBs, a unit for determining one or more beams to provide the SSBs based at least in part on the SSB information, and / or a unit for directing one or more receive beams toward the one or more beams.

[0055] In some aspects, base station 110 may include means for determining SSB information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB, and / or means for sending the SSB information to the UE. In some aspects, such means may include combining Figure 2 One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, and / or antenna 234.

[0056] Although Figure 2 The blocks in the 2000 are shown as distinct components, but the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combined component, or may be implemented in various combinations of components. For example, the functionality described with respect to 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. In some aspects, such units may include a combination of Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, and / or receive processor 258.

[0057] As indicated above, provide Figure 2 As an example. Other examples can be compared with Figure 2 The examples described are different.

[0058] Figure 3 An example logical architecture of a distributed radio access network (RAN) 300 is shown in accordance with aspects of the present disclosure.

[0059] The 5G access node 305 may include an access node controller 310. The access node controller 310 may be a central unit (CU) of the distributed RAN 300. In some aspects, a backhaul interface to the 5G core network 315 may terminate at the access node controller 310. The 5G core network 315 may include a 5G control plane component 320 and a 5G user plane component 325 (e.g., a 5G gateway), and the backhaul interface for one or both of the 5G control plane and the 5G user plane may terminate at the access node controller 310. Additionally or alternatively, a backhaul interface to one or more neighboring access nodes 330 (e.g., another 5G access node 305, an LTE access node, etc.) may terminate at the access node controller 310.

[0060] The access node controller 310 may include one or more TRPs 335 and / or may communicate with one or more TRPs 335 (e.g., via an F1 control (F1-C) interface and / or an F1 user (F1-U) interface). The TRP 335 may be a distributed unit (DU) of the distributed RAN 300. In some aspects, the TRP 335 may correspond to the TRP 335 described above in conjunction with Figure 1The base station 110 described herein. For example, different TRPs 335 may be included in different base stations 110. Additionally or alternatively, multiple TRPs 335 may be included in a single base station 110. In some aspects, a base station 110 may include a CU (e.g., an access node controller 310) and / or one or more DUs (e.g., one or more TRPs 335). In some cases, a TRP 335 may be referred to as a cell, a panel, an antenna array, an array, etc.

[0061] The TRP 335 may be connected to a single access node controller 310 or to multiple access node controllers 310. In some aspects, dynamic configuration of split logical functions may exist within the architecture of the distributed RAN 300. For example, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and / or a medium access control (MAC) layer may be configured to terminate at an access node controller 310 or a TRP 335.

[0062] In some aspects, multiple TRPs 335 may send communications (e.g., the same communication or different communications) in the same transmission time interval (TTI) (e.g., slot, mini-slot, subframe, symbol, etc.) or in different TTIs using different quasi co-location (QCL) relationships (e.g., different spatial parameters, different transmission configuration indicator (TCI) states, different precoding parameters, different beamforming parameters). In some aspects, the TCI state may be used to indicate one or more QCL relationships. A TRP 335 may be configured to serve traffic to a UE 120 individually (e.g., using dynamic selection) or jointly (e.g., using joint transmission with one or more other TRPs 335).

[0063] As indicated above, provide Figure 3 As an example. Other examples can be compared with Figure 3 The examples described are different.

[0064] Figure 4 4 is a schematic diagram illustrating an example 400 of multi-TRP communication (sometimes referred to as multi-panel communication) according to the present disclosure. Figure 4 As shown, multiple TRPs 405 can communicate with the same UE 120. TRP 405 can correspond to the above combined Figure 3 TRP 335 as described.

[0065] The multiple TRPs 405 (shown as TRP A and TRP B) can communicate with the same UE 120 in a coordinated manner (e.g., using coordinated multi-point transmission, etc.) to improve reliability, increase throughput, etc. The TRP 405 can coordinate such communication via an interface between the TRPs 405 (e.g., a backhaul interface, an access node controller 310). When the TRPs 405 are co-located in the same base station 110 (e.g., when the TRPs 405 are different antenna arrays or panels of the same base station 110), the interface can have a smaller delay and / or a higher capacity, and when the TRPs 405 are located in different base stations 110, they can have a larger delay and / or a lower capacity (compared to co-location). Different TRPs 405 can communicate with the UE 120 using different QCL relationships (e.g., different TCI states), different DMRS ports, and / or different layers (e.g., of multi-layer communication).

[0066] In a first multi-TRP transmission mode (e.g., Mode 1), a single physical downlink control channel (PDCCH) can be used to schedule downlink data communications for a single physical downlink shared channel (PDSCH). In this case, multiple TRPs 405 (e.g., TRP A and TRP B) can send communications to UE 120 on the same PDSCH. For example, communications can be sent using a single codeword with different spatial layers for different TRPs 405 (e.g., where one codeword is mapped to a first set of layers sent by a first TRP 405, and to a second set of layers sent by a second TRP 405). As another example, communications can be sent using multiple codewords, where different codewords are sent by different TRPs 405 (e.g., using different sets of layers). In either case, different TRPs 405 can use different QCL relationships (e.g., different TCI states) for different DMRS ports corresponding to different layers. For example, the first TRP 405 may use a first QCL relationship or a first TCI state for a first DMRS port set corresponding to a first layer set, and the second TRP 405 may use a second (different) QCL relationship or a second (different) TCL state for a second (different) DMRS port set corresponding to a second (different) layer set. In some aspects, the TCI state in the downlink control information (DCI) (e.g., sent on the PDCCH, such as DCI format 1_0, DCI format 1_1) may indicate a first QCL relationship (e.g., by indicating a first TCI state) and a second QCL relationship (e.g., by indicating a second TCI state). The first TCI state and the second TCI state may be indicated using a TCI field in the DCI. In general, the TCI field may indicate a single TCI state (for single TRP transmission) or multiple TCI states (for multi-TRP transmission as discussed herein) in the multi-TRP transmission mode (e.g., mode 1).

[0067] In a second multi-TRP transmission mode (e.g., mode 2), multiple PDCCHs may be used to schedule downlink data communications for multiple corresponding PDSCHs (e.g., one PDCCH for each PDSCH). In this case, the first PDCCH may schedule a first codeword to be sent by the first TRP 405, and the second PDCCH may schedule a second codeword to be sent by the second TRP 405. In addition, a first DCI (e.g., sent by the first TRP 405) may schedule a first PDSCH communication associated with a first DMRS port set having a first QCL relationship (e.g., indicated by a first TCI state) for the first TRP 405, and a second DCI (e.g., sent by the second TRP 405) may schedule a second PDSCH communication associated with a second DMRS port set having a second QCL relationship (e.g., indicated by a second TCI state) for the second TRP 405. In this case, the DCI (e.g., having DCI format 1_0, DCI format 1_1) may indicate a corresponding TCI state for the TRP 405 corresponding to the DCI. The TCI field of the DCI indicates a corresponding TCI state (eg, the TCI field of the first DCI indicates a first TCI state, and the TCI field of the second DCI indicates a second TCI state).

[0068] As indicated above, provide Figure 4 As an example. Other examples can be compared with Figure 4 The examples described are different.

[0069] Figure 5 is a diagram illustrating examples 500, 502, and 504 of TRPs for sending data on the same frequency resources according to the present disclosure.

[0070] Figure 5 An example 500 of a TRP that transmits SSBs to a UE on a transmit (Tx) beam is shown. The UE may be on a high speed train (HST). A base station (e.g., a gNB) may indicate to the UE that the PDCCH and PDSCH are QCL with the beam providing the SSBs. In other words, the UE on the HST may expect the PDCCH and PDSCH on the same transmit beam providing the SSBs. The UE may direct a receive beam to the transmit beam from the TRP. This may include aligning a beam configuration (spatial filter) with the transmit beam from the TRP.

[0071] In some aspects, multiple TRPs may transmit the same data on the same time and / or frequency resources. For example, data may be transmitted in a SFN where a single frequency is used for each of multiple beams from multiple TRPs. Figure 5As shown by reference numeral 502, the first TRP and the second TRP may both use the same frequency beam to send the same SSB (SSB 1) to the UE on the HST. However, the UE does not know whether SFN is used. For example, the UE does not know whether SSB 1 (and PDCCH / PDSCH) is provided from one beam or two beams. This scenario may be referred to as transparent SFN.

[0072] like Figure 5 As shown by reference numeral 504, the first TRP may send a first SSB (SSB1) to the UE on the HST, and the second TRP may send a second SSB (SSB 2) to the UE on the HST. In this scenario, the gNB may indicate that the PDCCH and PDSCH are QCL with the first beam providing SSB 1 and the second beam providing SSB 2. This scenario may be referred to as a non-transparent SFN.

[0073] As indicated above, Figure 5 Some examples are provided. Other examples can be compared with Figure 5 The examples described are different.

[0074] Figure 6 600 , 602 , and 604 are diagrams illustrating sending a TRP for an SSB to a UE over an HST according to the present disclosure.

[0075] Figure 6 An example 600 of SSB mapping for multiple TRPs along a track for HST is shown. For example, each TRP may transmit a different SSB (SSB 1 to SSB 7) on a beam pointing in a different direction. The beam order for the SSBs is the same from one TRP to the next. At the first TRP boundary, TRP 1 is transmitting SSB 7 to the UE, and TRP2 is transmitting SSB 1 to the UE. These SSBs are not identical, and therefore, the pattern in example 600 is not suitable for SFN, or there is little gain using SFN.

[0076] Figure 6An example 602 of reverse order SSB mapping for multiple TRPs along a track for HST is shown. As shown by example 602, the beam order for TRP1 is SSB 1 to SSB 7, the beam order for TRP2 is SSB 7 to SSB 1, and the beam order for TRP3 is SSB 1 to SSB 7. At the first TRP boundary, TRP1 is sending SSB 7 to the UE, and TRP2 is also sending SSB 7 to the UE. At the second TRP boundary, TRP2 can send SSB 1 to the UE, and TRP3 can also send SSB 1 to the UE. Because the UE can receive the same SSB from both beams, SFN can be used for TRP boundaries.

[0077] Figure 6 An example 604 of reverse order SSB mapping with multiple beams in the same center region is shown. As shown by example 604, the beam order for TRP1 and the beam order for TRP2 are the same, but there are multiple beams in the center region of each TRP that transmit the same SSB (SSB 3). This can increase the chances of the UE receiving SSBs from multiple beams.

[0078] As indicated above, Figure 6 Some examples are provided. Other examples can be compared with Figure 6 The examples described are different.

[0079] Figure 7 is a diagram illustrating an example 700 of beams of a SFN that is transparent to a UE in accordance with the present disclosure.

[0080] Figure 7 An SSB sent on one beam from one TRP is shown compared to an SSB sent on two SFN beams from two TRPs. Although the SSB may be sent on two SFN beams, if the SFN is completely transparent (unknown) to the UE, the UE may not be able to distinguish whether the SSB is received on one beam or on multiple SFN beams. In other words, the UE may not be able to utilize any benefits that can be obtained from receiving SSBs on multiple beams.

[0081] For example, in typical operation (in Figure 7 ), the UE can determine the receive beam associated with the transmit beam of the SSB from one TRP. The UE can use the transmit beam from one TRP to estimate the channel and / or determine the Doppler shift (negative or positive). In operation with two TRPs (in Figure 7), each TRP may transmit the SSB on a transmit beam. However, if the UE is unaware that the SSB is associated with two transmit beams, the UE may follow typical operation. That is, the UE may direct the receive beam to one of the transmit beams, and the transmit beam may not be the better of the two transmit beams. The UE may therefore miss an opportunity to improve communications to and from the TRP. This missed opportunity may be more obvious to a UE on the HST. By not taking advantage of the opportunity for improved communications, the UE may waste power, processing resources, and signaling resources.

[0082] As indicated above, provide Figure 7 As an example. Other examples can be compared with Figure 7 The examples described are different.

[0083] Figure 8 is a diagram illustrating an example 800 of an SSB attribute indicating an SFN according to the present disclosure.

[0084] Figure 8 Two transmit beams from two TRPs in a semi-transparent SFN are shown. In some aspects, the gNB may provide SSB information to the UE indicating that a particular SSB may be received from one beam, two beams, three beams, or more beams. For multiple beams, the SSB information may also indicate whether the multiple beams are from the same TRP or from different TRPs. In this way, the UE may determine whether to receive the SSB from multiple transmit beams based on the SSB information. As a result, the UE may, for example, direct a receive beam to the stronger of the two transmit beams, or direct two receive beams to the two transmit beams. The UE may estimate the channel and / or determine the Doppler shift from each beam, and use parameters estimated separately from the two beams to improve decoding performance. As a result, the PDCCH and / or PDSCH for the SSB and QCL may be received with greater gain and less impairment. Better communication, more gain, and less impairment enables the UE to save power, processing resources, and signaling resources.

[0085] As indicated above, provide Figure 8 As an example. Other examples can be compared with Figure 8 The examples described are different.

[0086] Fig. 9 is a diagram illustrating an example 900 of an SSB attribute indicating an SFN according to the present disclosure. Fig. 9 Base stations (BSs) 910 (eg, Figure 1 and Figure 2 BS 110, etc.) and UE 920 ( Figure 1and Figure 2 120, etc.). UE 920 may be on an HST through multiple TRPs. The TRPs may each transmit one or more beams. One or more of the beams may be SFN beams.

[0087] As indicated by reference numeral 930, the BS 910 may determine SSB information indicating, for each of the one or more SSBs, how many beams are associated with the respective SSB. Fig. 9 It can be shown that it corresponds to Figure 6 604. SSB information 935 shows SSB information for a plurality of SSBs (SSB 1 to SSB 5). For example, SSB 1 is associated with two beams from different TRPs. SSB 2 is associated with one beam. SSB 3 is associated with three beams from the same TRP. SSB 4 is associated with one beam. SSB 5 is associated with two beams from different TRPs.

[0088] As shown by reference numeral 940, BS 910 may send SSB information to UE 920. In some aspects, BS 910 may send SSB information via system information or radio resource control (RRC) message. SSB information may include one or more bits indicating the number of beams for each SSB. For example, one bit may indicate whether there is one beam or multiple beams for the SSB. In some aspects, multiple bits may be used to indicate how many beams are associated with the SSB. In some aspects, SSB information may indicate a wide beam, a narrow beam, or a combination thereof.

[0089] As indicated above, provide Fig. 9 As an example. Other examples can be compared with Fig. 9 The examples described are different.

[0090] Fig.10 is a diagram illustrating an example 1000 of an SSB attribute indicating an SFN according to the present disclosure. Fig.10 Shown in by following a similar Figure 6 UE 920 on the HST of multiple TRPs of the SSB beam order shown in Example 604. UE 920 has received SSB information from BS 910, such as in combination with Fig. 9 as described.

[0091] As indicated by reference numeral 1005, the UE 920 may monitor SSBs. When monitoring the SSBs, the UE 920 may receive one or more SSBs (e.g., SSB 1 to SSB 5). Each SSB received by the UE 920 may be from one beam or multiple beams. The multiple beams may be from multiple TRPs. As indicated by reference numeral 1010, the UE 920 may determine one or more beams providing a particular SSB based at least in part on the SSB information received from the BS 910. For example, Fig.10 As shown, HST is located at the boundary of TRP2 and TRP3. UE 920 on HST can receive SSB 5. UE 920 can receive SSB 5 according to SSB information (e.g., Fig. 9 The SSB information 935 in the UE 920 determines that SSB 5 is associated with two beams from different TRPs. The UE 920 can thereby determine that there are two transmit beams providing SSB 5, one beam from TRP2 and one beam from TRP3.

[0092] In some aspects, the UE 920 may estimate the channel and / or determine the Doppler shift for each beam. The UE 920 may determine which beam has more gain, more accurate channel estimation, and / or less Doppler shift. As shown by reference numeral 1015, the UE 920 may direct a receive beam to such a beam. In some aspects, the UE 920 may direct a receive beam to a transmit beam in a transmit beam, and direct another receive beam to another transmit beam. As a result, the UE 920 may experience improved communication on the corresponding PDCCH and / or PDSCH. The UE 920 may also experience improved communication on a physical uplink channel and / or an improved reference signal.

[0093] As indicated above, provide Fig.10 As an example. Other examples can be compared with Fig.10 The examples described are different.

[0094] Fig.11 1 is a diagram illustrating an example process 1100 performed, for example, by a UE according to the present disclosure. The example process 1100 is a UE (e.g., Figure 1 and Figure 2 UE 120 depicted in Fig. 9 and Fig.10 An example of a UE 920 depicted in FIG. 9 performing operations associated with an SSB attribute indicating an SFN.

[0095] like Fig.11As shown, in some aspects, process 1100 may include receiving SSB information indicating how many number of beams are associated with each respective SSB of one or more SSBs (block 1110). For example, the UE may receive (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) SSB information indicating how many number of beams are associated with each respective SSB of one or more SSBs, as described above.

[0096] like Fig.11 As further shown, in some aspects, process 1100 may include monitoring SSBs (block 1120). For example, the UE may monitor SSBs (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) as described above.

[0097] like Fig.11 As further shown, in some aspects, process 1100 may include determining, based at least in part on the SSB information, one or more beams to provide the SSB (block 1130). For example, the UE may determine (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) based at least in part on the SSB information, one or more beams to provide the SSB, as described above.

[0098] like Fig.11 As further shown, in some aspects, process 1100 may include directing one or more receive beams toward the one or more beams (block 1140). For example, the UE may (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) direct one or more receive beams toward the one or more beams as described above.

[0099] Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0100] In a first aspect, the quantity indicates two or more beams, and the SSB information indicates whether the two or more beams are from the same TRP or different TRPs, and determining the one or more beams includes: determining the two or more beams based at least in part on whether the two or more beams are from the same TRP or different TRPs.

[0101] In a second aspect, alone or in combination with the first aspect, the SSB information indicates a first beam for the SSB and a second beam for the SSB from a different TRP, and directing the one or more receive beams to the one or more beams includes: directing a first receive beam to the first beam and directing a second receive beam to the second beam.

[0102] In a third aspect, alone or in combination with one or more of the first and second aspects, process 1100 includes determining, for each of the two or more beams, one or more of a channel estimate or a Doppler shift.

[0103] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the number is indicated by one or more bits.

[0104] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the SSB information indicates whether each beam corresponding to a respective SSB is a wide beam or a narrow beam.

[0105] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the one or more beams include one or more SFN beams.

[0106] Although Fig.11 Example blocks of process 1100 are shown, but in some aspects, process 1100 may include Fig.11 Additional blocks, fewer blocks, different blocks, or blocks arranged differently than the blocks depicted in the process 1100. Additionally or alternatively, two or more of the blocks in the process 1100 may be executed in parallel.

[0107] Fig.12 1 is a diagram illustrating an example process 1200 performed, for example, by a base station according to the present disclosure. The example process 1200 is a process in which a base station (e.g., Figure 1 and Figure 2 BS 110, depicted in Fig. 9 An example of BS 910) depicted in FIG. 9 performing operations associated with SSB attributes indicating an SFN.

[0108] like Fig.12As shown, in some aspects, process 1200 may include determining SSB information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB (block 1210). For example, a base station may determine (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242) SSB information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB, as described above.

[0109] like Fig.12 As further shown, in some aspects, process 1200 may include sending SSB information to the UE (block 1220). For example, the base station may send the SSB information to the UE (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242), as described above.

[0110] Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0111] In the first aspect, sending the SSB information includes sending the SSB information via one or more of a system information or a radio resource control message.

[0112] In a second aspect, alone or in combination with the first aspect, the number indicates two or more beams, and the SSB information indicates whether the two or more beams are from the same TRP or different TRPs.

[0113] In a third aspect, alone or in combination with one or more of the first and second aspects, the number is indicated by one or more bits.

[0114] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the SSB information indicates whether each beam corresponding to a respective SSB is a wide beam or a narrow beam. The beam may include one or more SFN beams.

[0115] Although Fig.12 Example blocks of process 1200 are shown, but in some aspects, process 1200 may include Fig.12 Additional blocks, fewer blocks, different blocks, or blocks arranged differently than the blocks depicted in the process 1200. Additionally or alternatively, two or more of the blocks in the process 1200 may be executed in parallel.

[0116] 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 implementation of the various aspects.

[0117] The following provides a summary of some aspects of the disclosure.

[0118] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: receiving synchronization signal block (SSB) information, the SSB information indicating how many number of beams are associated with each respective SSB in one or more SSBs; monitoring the SSBs; determining one or more beams providing the SSBs based at least in part on the SSB information; and directing one or more receive beams toward the one or more beams.

[0119] Aspect 2: A method according to Aspect 1, wherein the number indicates two or more beams, and the SSB information indicates whether the two or more beams are from the same transmit receive point (TRP) or different TRPs, and wherein determining the one or more beams includes: determining the two or more beams based at least in part on whether the two or more beams are from the same TRP or different TRPs.

[0120] Aspect 3: A method according to Aspect 2, wherein the SSB information indicates a first beam for the SSB and a second beam for the SSB from a different TRP, and wherein directing the one or more receiving beams to the one or more beams includes: directing a first receiving beam to the first beam and directing a second receiving beam to the second beam.

[0121] Aspect 4: The method according to aspect 2, further comprising: determining one or more of a channel estimate or a Doppler shift for each of the two or more beams.

[0122] Aspect 5: The method according to any of aspects 1-4, wherein the number is indicated by one or more bits.

[0123] Aspect 6: The method according to any of aspects 1 to 5, wherein the SSB information indicates whether each beam corresponding to a respective SSB is a wide beam or a narrow beam.

[0124] Aspect 7: The method according to any of aspects 1-6, wherein the one or more beams include one or more single frequency network (SFN) beams.

[0125] Aspect 8: A method of wireless communication performed by a base station, comprising: determining synchronization signal block (SSB) information, wherein the SSB information indicates how many number of beams are associated with each respective SSB in one or more SSBs; and sending the SSB information to a user equipment (UE).

[0126] Aspect 9: The method according to aspect 8, wherein sending the SSB information includes: sending the SSB information via one or more of system information or radio resource control messages.

[0127] Aspect 10: A method according to Aspect 8 or Aspect 9, wherein the number indicates two or more beams, and the SSB information indicates whether the two or more beams are from the same transmit receive point (TRP) or different TRPs.

[0128] Aspect 11: The method according to any of aspects 8-10, wherein the number is indicated by one or more bits.

[0129] Aspect 12: The method according to any of aspects 8-11, wherein the SSB information indicates whether each beam corresponding to a respective SSB is a wide beam or a narrow beam.

[0130] Aspect 13: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory, and the instructions are executable by the processor to cause the apparatus to perform a method according to one or more of Aspects 1-12.

[0131] Aspect 14: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the method according to one or more of aspects 1-12.

[0132] Aspect 15: An apparatus for wireless communication, comprising at least one unit for performing the method according to one or more of aspects 1-12.

[0133] Aspect 16: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1-12.

[0134] Aspect 17: 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 1-12.

[0135] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, "software" should be broadly interpreted to mean instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, processes, and / or functions, as well as other examples. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0136] It will be apparent that the systems and / or methods described herein may be implemented in different forms of hardware and / or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not a limitation of the various aspects. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code—it is understood that software and hardware may be designed to implement the systems and / or methods based, at least in part, on the description herein.

[0137] As used herein, satisfying a threshold may refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0138] Even if the specific combination of features is recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner that is not clearly recorded in the claims and / or not disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, 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" referred to as the list of items refers to any combination of these items, including a single member. For example, "at least one of a, b or c" is intended to cover: a, b, c, ab, ac, bc and abc, and any combination of the same elements with multiples (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc or any other sorting of a, b and c).

[0139] Unless explicitly described as such, the elements, actions or instructions used herein should not be interpreted as decisive or essential. In addition, as used herein, the articles "a" and "an" are intended to include one or more entries, and can be used interchangeably with "one or more". Further, as used herein, the article "the" is intended to include one or more entries quoted in conjunction with the article "the", 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 entries (e.g., related entries, unrelated entries, related entries and unrelated entries), and can be used interchangeably with "one or more". In places where only one entry is meant, phrases "only one" or similar language are used. In addition, as used herein, the terms "has", "have", "having" etc. are intended to be open terms. Further, unless otherwise expressly provided, the phrase "based on" is intended to mean "at least partially based on". Additionally, as used herein, unless expressly stated otherwise, the term "or" is intended to be inclusive when used in a series, and may be used interchangeably with "and / or" (e.g., if used in combination with "either" or "only one of").

Claims

1. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors, coupled to the memory, configured to: receiving synchronization signal block (SSB) information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB, wherein the number is indicated by one or more bits; determining one or more beams providing SSBs based at least in part on the SSB information; and One or more receive beams are directed toward the one or more beams.

2. The UE according to claim 1, wherein: The number indicates two or more beams, and the SSB information indicates whether the two or more beams are from the same transmit receive point (TRP) or different TRPs, and wherein the one or more processors are configured to determine the two or more beams based at least in part on whether the two or more beams are from the same TRP or different TRPs.

3. The UE according to claim 2, wherein: The SSB information indicates a first beam for the SSB and a second beam for the SSB from a different TRP, and wherein the one or more processors are configured to direct a first receive beam to the first beam and to direct a second receive beam to the second beam.

4. The UE according to claim 2, wherein: The one or more processors are further configured to determine one or more of a channel estimate or a Doppler shift for each of the two or more beams.

5. The UE according to claim 1, wherein: The SSB information indicates whether each beam corresponding to a respective SSB is a wide beam or a narrow beam.

6. The UE according to claim 1, wherein: The one or more beams include one or more single frequency network (SFN) beams.

7. The UE according to claim 1, wherein: A bit in the one or more bits indicates the presence of a beam associated with the respective SSB.

8. The UE according to claim 1, wherein: A bit in the one or more bits indicates that there are multiple beams associated with the respective SSB.

9. A network entity for wireless communication, comprising: Memory; as well as One or more processors, coupled to the memory, configured to: determining synchronization signal block (SSB) information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB, wherein the number is indicated by one or more bits; and Send the SSB information.

10. The network entity according to claim 9, wherein: The one or more processors are configured to send the SSB information via one or more of a system information or a radio resource control message.

11. The network entity according to claim 9, wherein: The number indicates two or more beams, and the SSB information indicates whether the two or more beams are from the same transmit receive point (TRP) or different TRPs.

12. The network entity according to claim 9, wherein: The SSB information indicates whether each beam corresponding to a respective SSB is a wide beam or a narrow beam.

13. The network entity according to claim 9, wherein: A bit in the one or more bits indicates the presence of a beam associated with the respective SSB.

14. The network entity according to claim 9, wherein: A bit in the one or more bits indicates that there are multiple beams associated with the respective SSB.

15. A method of wireless communication performed by a user equipment (UE), comprising: receiving synchronization signal block (SSB) information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB, wherein the number is indicated by one or more bits; determining one or more beams providing SSBs based at least in part on the SSB information; and One or more receive beams are directed toward the one or more beams.

16. The method according to claim 15, wherein: The number indicates two or more beams, and the SSB information indicates whether the two or more beams are from the same transmit receive point (TRP) or different TRPs, and wherein determining the one or more beams includes determining the two or more beams based at least in part on whether the two or more beams are from the same TRP or different TRPs.

17. The method according to claim 16, wherein: The SSB information indicates a first beam for the SSB and a second beam for the SSB from a different TRP, and wherein directing the one or more receive beams to the one or more beams includes directing a first receive beam to the first beam and directing a second receive beam to the second beam.

18. The method according to claim 16, further comprising: One or more of a channel estimate or a Doppler shift for each of the two or more beams is determined.

19. The method according to claim 15, wherein: The SSB information indicates whether each beam corresponding to a respective SSB is a wide beam or a narrow beam.

20. The method according to claim 15, wherein: The one or more beams include one or more single frequency network (SFN) beams.

21. The method according to claim 15, wherein: A bit in the one or more bits indicates the presence of a beam associated with the respective SSB.

22. The method according to claim 15, wherein: A bit in the one or more bits indicates that there are multiple beams associated with the respective SSB.

23. A method of wireless communication performed by a network entity, comprising: determining synchronization signal block (SSB) information indicating, for each respective SSB of one or more SSBs, how many number of beams are associated with the respective SSB, wherein the number is indicated by one or more bits; and Send the SSB information.

24. The method according to claim 23, wherein: Sending the SSB information includes sending the SSB information via one or more of a system information or a radio resource control message.

25. The method according to claim 23, wherein: The number indicates two or more beams, and the SSB information indicates whether the two or more beams are from the same transmit receive point (TRP) or different TRPs.

26. The method of claim 23, wherein: The SSB information indicates whether each beam corresponding to a respective SSB is a wide beam or a narrow beam.

27. The method according to claim 23, wherein: A bit in the one or more bits indicates the presence of a beam associated with the respective SSB.

28. The method of claim 23, wherein: A bit in the one or more bits indicates that there are multiple beams associated with the respective SSB.

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