Hybrid SFN and uplink repetition

Abstract

To provide more robust connectivity and better coverage, the UE can be configured to receive SFN PDSCH from multiple TRPs, including a first TRP and a second TRP, via multiple beams, where the multiple beams are based on a configured DL TCI state. The UE can also be configured to transmit the same PUSCH via each of the multiple beams. Furthermore, the same PUSCH is transmitted n times via the first beam and m times via the second beam, where n and m are integers greater than or equal to 1.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefits and priorities of the following applications: U.S. Provisional Application Serial No. 63 / 044,874, filed June 26, 2020, entitled “MIXED SFN AND UPLINK REPETITION”; and U.S. Patent Application No. 17 / 333,522, filed May 28, 2021, entitled “MIXED SFN AND UPLINK REPETITION”, the entire contents of which are expressly incorporated herein by reference. Technical Field

[0003] In summary, this disclosure relates to communication systems, and more specifically, to wireless communication networks having a single-frequency network and uplink duplication. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. 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, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different wireless devices to communicate at the city, country, region, and even global levels. An example telecommunications standard is 5G New Radio (NR). 5G NR is part of the continuous evolution of mobile broadband released by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., in conjunction with the Internet of Things (IoT),) and others. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology. These improvements can also be applied to other multiple access technologies and telecommunications standards that adopt them. Summary of the Invention

[0006] The following provides a brief overview of one or more aspects to offer a basic understanding of such aspects. This overview is not a comprehensive summary of all anticipated aspects, nor is it intended to identify key or important elements of all aspects, nor to depict the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that follows.

[0007] To provide more robust connectivity and better coverage, the UE can be configured to receive the Single Frequency Network (SFN) Physical Downlink Shared Channel (PDSCH) from multiple TRPs, including a First Transmit Receive Point (TRP) and a Second TRP, via multiple beams, based on a configured Downlink (DL) Transmission Configuration Indicator (TCI) state. The UE can also be configured to transmit the same Physical Uplink Shared Channel (PUSCH) through each of the multiple beams.

[0008] The example base station can transmit SFNPDSCH through multiple beams from multiple TRPs, including a first TRP and a second TRP, where the multiple beams are based on a configured DL TCI state. The example base station can also receive the same PUSCH through each of the multiple beams.

[0009] To achieve the foregoing and related objectives, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and drawings set forth certain illustrative features of one or more aspects in detail. However, these features indicate only some of the various ways in which the principles of each aspect may be employed, and the description is intended to include all such aspects and their equivalents. Attached Figure Description

[0010] Figure 1 This is a diagram illustrating an example of a wireless communication system and access network.

[0011] Figure 2A This is a diagram illustrating an example of the first frame of various aspects according to this disclosure.

[0012] Figure 2B This is a diagram illustrating an example of a DL channel within a subframe according to various aspects of this disclosure.

[0013] Figure 2C This is a diagram illustrating an example of the second frame according to various aspects of this disclosure.

[0014] Figure 2D This is a diagram illustrating an example of a UL channel within a subframe according to various aspects of this disclosure.

[0015] Figure 3This is a diagram illustrating an example of a base station and user equipment (UE) in an access network.

[0016] Figures 4A-4C The different types of communication between the TRP and the UE are shown.

[0017] Figure 5 The communication flow between multiple TRPs and UEs according to some aspects of this disclosure is shown.

[0018] Figure 6A and 6B The different types of communication between the TRP and the UE are also shown.

[0019] Figure 7 This is a flowchart of the wireless communication method at the UE.

[0020] Figure 8 This is a flowchart of the wireless communication method at the UE.

[0021] Figure 9 This is a diagram illustrating an example of the hardware implementation for the example device.

[0022] Figure 10 This is a flowchart of the wireless communication method at the base station.

[0023] Figure 11 This is a flowchart of the wireless communication method at the base station.

[0024] Figure 12 This is a diagram illustrating an example of the hardware implementation for the example device. Detailed Implementation

[0025] The specific embodiments described below with reference to the accompanying drawings are intended as a description of various configurations and are not intended to represent the only configuration in which the concepts described herein can be practiced. Specific details are included in the specific embodiments for the purpose of providing a comprehensive understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0026] Several aspects of a telecommunications system will now be described with reference to various apparatuses and methods. These apparatuses and methods will be described in detail below, and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented in hardware or software depends on the specific application and the design constraints imposed on the system as a whole.

[0027] For example, an element, or any part of an element, or any combination of elements, can be implemented as a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system-on-a-chip (SoCs), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described herein. One or more processors in a processing system can execute 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, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc.

[0028] Accordingly, in one or more example embodiments, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or code on a computer-readable medium. A computer-readable medium includes a computer storage medium. The storage medium may be any available medium accessible by a computer. By way of example, and not limitation, such a computer-readable medium may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of computer-readable media of the types described above, or any other medium capable of storing computer-executable code accessible by a computer in the form of instructions or data structures.

[0029] While aspects and implementations are described herein by way of example, those skilled in the art will understand that additional implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, implementations and / or uses may arise via integrated chip implementations and other devices based on non-modular components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, AI-enabled devices, etc.). While some examples may or may not be specific to a particular use case or application, a wide variety of applicability to the described innovations can exist. Implementations can 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 incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating the described aspects and features may also include additional components and features for the implementation and enforcement of the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily involve multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / converters, etc.). The innovations described herein are intended to be implemented in a variety of devices, chip-level components, systems, distributed arrangements, aggregated or decomposed components, end-user devices, etc., with different sizes, shapes, and constructions.

[0030] Figure 1 This is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a wireless wide area network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). Base station 102 may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.

[0031] Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with EPC 160 via a first backhaul link 132 (e.g., S1 interface). Base station 102 configured for 5G NR (collectively referred to as Next Generation RAN (NG-RAN)) can interface with core network 190 via a second backhaul link 184. Among other functions, base station 102 can also perform one or more of the following functions: transmission of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), user and device tracking, RAN information management (RIM), paging, location, and delivery of warning messages. Base stations 102 can communicate directly or indirectly with each other on a third backhaul link 134 (e.g., an X2 interface) (e.g., via EPC 160 or core network 190). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 can be wired or wireless.

[0032] Base station 102 can wirelessly communicate with UE 104. Each base station 102 in the base station 102 can provide communication coverage for a corresponding geographic coverage area 110. Overlapping geographic coverage areas 110 may exist. For example, a small cell 102' may have a coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells can be referred to as a heterogeneous network. The heterogeneous network may also include a Home Evolved Node B (eNB) (HeNB), which can provide services to restricted groups referred to as Closed Subscriber Groups (CSGs). The communication link 120 between base station 102 and UE 104 may include uplink (UL) (also referred to as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also referred to as forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technology, which includes spatial multiplexing, beamforming, and / or transmit diversity. The communication link may be via one or more carriers. Base station 102 / UE 104 may use spectrum allocated in carrier aggregation for a total of up to Y x MHz (x component carriers) for transmission in each direction, with a bandwidth of up to Y MHz per carrier (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). Carriers may be adjacent to each other or may not be adjacent to each other. Carrier allocation may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​compared to UL). Component carriers may include primary component carriers and one or more secondary component carriers. The primary component carrier may be referred to as the primary cell (PCell), and the secondary component carrier may be referred to as the secondary cell (SCell).

[0033] Some UEs 104 can communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 can use DL / UL WWAN spectrum. D2D communication link 158 can use one or more sideline channels, such as the Physical Sideline Broadcast Channel (PSBCH), Physical Sideline Discovery Channel (PSDCH), Physical Sideline Shared Channel (PSSCH), and Physical Sideline Control Channel (PSCCH). D2D communication can be achieved through a wide variety of wireless D2D communication systems, such as, for example, FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0034] The wireless communication system may also include a Wi-Fi access point (AP) 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 in, for example, a 5 GHz unlicensed spectrum. When communicating in the unlicensed spectrum, the STA 152 / AP 150 may perform a free channel assessment (CCA) before communication to determine whether the channel is available.

[0035] Small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102' can employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as used by Wi-Fi AP 150. Small cell 102' employing NR in unlicensed spectrum can improve coverage of the access network and / or increase the capacity of the access network.

[0036] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc., based on frequency / wavelength. In 5G NR, the two initial operating bands have been designated as frequency range names FR1 (410MHz-7.125GHz) and FR2 (24.25GHz-52.6GHz). Although a portion of FR1 is greater than 6GHz, in various documents and articles, FR1 is often (interchangeably) referred to as the "below 6GHz" band. Similar naming issues sometimes arise regarding FR2; although it differs from the extremely high frequency (EHF) band (30GHz-300GHz), it is often (interchangeably) referred to in documents and articles as the "millimeter wave" band, which is designated as such by the International Telecommunication Union (ITU).

[0037] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR studies have designated the operating bands of these IF bands as the frequency range name FR3 (7.125 GHz – 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the characteristics of FR1 and / or FR2 to IF band frequencies. Additionally, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating frequency bands have been designated as the frequency range names 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.

[0038] In light of the foregoing, unless otherwise specifically stated, it should be understood that when the term "below 6 GHz" is used herein, it can broadly refer to frequencies that are less than 6 GHz, within FR1, or may include intermediate frequency band frequencies. Furthermore, unless otherwise specifically stated, it should be understood that when the term "millimeter wave" is used herein, it can broadly refer to frequencies that may include intermediate frequency band frequencies, within FR2, FR4, FR4-a or FR4-1 and / or FR5, or within the EHF band.

[0039] Base station 102 (whether a small cell 102' or a large cell (e.g., a macro base station)) may include and / or be referred to as an eNB, gNodeB (gNB), or another type of base station. Some base stations (such as gNB 180) may operate in conventional sub-6 GHz spectrum, millimeter wave frequencies, and / or near-millimeter wave frequencies to communicate with UE 104. When gNB 180 operates in millimeter wave or near-millimeter wave frequencies, gNB 180 may be referred to as a millimeter wave base station. Millimeter wave base station 180 may utilize beamforming 182 with UE 104 to compensate for extremely high path loss and short range. Base station 180 and UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming.

[0040] Base station 180 may transmit beamforming signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamforming signals from base station 180 in one or more receive directions 182'. UE 104 may also transmit beamforming signals to base station 180 in one or more transmit directions. Base station 180 may receive beamforming signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beam training to determine the optimal receive and transmit directions for each of base station 180 / UE 104. The transmit and receive directions for base station 180 may be the same or different. The transmit and receive directions for UE 104 may be the same or different.

[0041] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 can communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Generally, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides IP address allocation and other functions to the UE. PDN Gateway 172 and BM-SC 170 are connected to IP Service 176. IP Service 176 may include the Internet, intranet, IP Multimedia Subsystem (IMS), PS streaming service, and / or other IP services. The BM-SC 170 provides functions for setting up and delivering MBMS user services. The BM-SC 170 can serve as an entry point for MBMS transmissions to content providers, authorizing and initiating MBMS bearer services within a Public Land Mobile Network (PLMN), and scheduling MBMS transmissions. The MBMS gateway 168 can distribute MBMS services to base stations 102 belonging to areas of Multicast-Broadcast Single Frequency Networks (MBSFNs) that broadcast specific services, and can be responsible for session management (start / stop) and collecting billing information related to eMBMS.

[0042] The core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 can communicate with the Unified Data Management Unit (UDM) 196. AMF 192 is the control node that processes signaling between UE 104 and the core network 190. Typically, AMF 192 provides QoS streaming and session management. All user Internet Protocol (IP) packets are transmitted through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP service 197. IP service 197 may include the Internet, intranet, IP Multimedia Subsystem (IMS), packet-switched (PS) streaming service, and / or other IP services.

[0043] Base stations may include and / or be referred to as gNB, Node B, eNB, access point, base transceiver station, wireless base station, wireless transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), Transmitter Receiver Point (TRP), or some other suitable term. Base station 102 provides UE 104 with access to EPC 160 or core network 190. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radio units, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablets, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similarly functional devices. Some UEs in UE 104 may be referred to as IoT devices (e.g., parking meters, air pumps, ovens, vehicles, heart monitors, etc.). UE 104 may also be referred to as station, mobile station, user station, mobile unit, user unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile user station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term. In some scenarios, the term UE may also be applied to one or more companion devices, such as in a device constellation arrangement. One or more of these devices may jointly access the network and / or individually access the network.

[0044] Refer again Figure 1 In some aspects, UE 104 can be configured to perform SFN mode 198, which includes receiving SFN PDSCH from multiple TRPs, including a first TRP and a second TRP, via multiple beams, the multiple beams being based on a configured DL TCI state. SFN mode 198 may also include transmitting PUSCH via each of the multiple beams.

[0045] In some aspects, base station 102 / 180 can be configured to perform SFN mode 199, which includes transmitting SFN PDSCH from multiple TRPs, including a first TRP and a second TRP, via multiple beams, the multiple beams being based on configured DL TCI states. SFN mode 199 may also include receiving PUSCH via each of the multiple beams.

[0046] Although the following description may focus on 5G NR, the concepts described herein can be applied to other similar fields, such as LTE, LTE-A, CDMA, GSM and other wireless technologies.

[0047] Figure 2A This is a schematic diagram 200 showing an example of the first subframe within a 5G NR frame structure. Figure 2B This is a schematic diagram 230 showing an example of a DL channel within a 5G NR subframe. Figure 2C This is a schematic diagram 250 showing an example of a second subframe within a 5G NR frame structure. Figure 2D This is a schematic diagram 280 illustrating an example of a UL channel within a 5G NR subframe. The 5G NR frame structure can be Frequency Division Duplex (FDD) (where, for a specific set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to either DL or UL), or Time Division Duplex (TDD) (where, for a specific set of subcarriers (carrier system bandwidth), subframes within that set are dedicated to both DL and UL). In the process of... Figure 2A , 2C In the provided example, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (mostly DL), where D is DL, U is UL, and F is flexible between DL / UL, and subframe 3 is configured with slot format 1 (all UL). Although subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are all DL and all UL, respectively. Other slot formats 2-61 include a mixture of DL, UL, and flexible symbols. The UE is configured with a slot format via the received Slot Format Indicator (SFI) (dynamically configured via DL Control Information (DCI) or semi-statically / statically configured via Radio Resource Control (RRC) signaling). Note that the following description also applies to the 5G NR frame structure as TDD.

[0048] Figure 2A-2DThe frame structure is illustrated, and aspects of this disclosure are applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 equal-sized subframes (1 ms). Each subframe may include one or more time slots. Subframes may also include micro-time slots, which may include 7, 4, or 2 symbols. Each time slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For normal CP, each time slot may include 14 symbols, and for extended CP, each time slot may include 12 symbols. Symbols on the DL may be CP Orthogonal Frequency Division Multiplexing (OFDM) (CP-OFDM) symbols. Symbols on the UL may be CP-OFDM symbols (for high-throughput scenarios) or Discrete Fourier Transform (DFT) Spread Spectrum OFDM (DFT-s-OFDM) symbols (also known as Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols) (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe can be based on CP and a digital scheme (numerology). The digital scheme defines the subcarrier spacing (SCS) and, in effect, the symbol length / duration (which can be equal to 1 / SCS).

[0049] μ <![CDATA[SCSΔf=2 μ ·15[kHz]]]> Cyclic prefix 0 15 ordinary 1 30 ordinary 2 60 Normal, Extended 3 120 ordinary 4 240 ordinary

[0050] For a standard CP (14 symbols / slot), different digital schemes μ0 through 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For an extended CP, digital scheme 2 allows 4 slots per subframe. Accordingly, for both the standard CP and digital scheme μ, there are 14 symbols / slot and 2 slots per subframe. μ One time slot / subframe. The subcarrier spacing can be equal to 2. μ *15kHz, where μ is the digital scheme from 0 to 4. Therefore, digital scheme μ = 0 has a subcarrier spacing of 15kHz, and digital scheme μ = 4 has a subcarrier spacing of 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figure 2A-2D Examples are provided for a standard CP (with 14 symbols per time slot) and a digital scheme μ=2 (with 4 time slots per subframe). The time slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a frame set, one or more distinct bandwidth portions (BWPs) of frequency division multiplexing can exist (see [link to relevant documentation]). Figure 2B Each BWP can have a specific digital scheme and CP (normal or extended).

[0051] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also known as a physical RB (PRB)), which consists of 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0052] As in Figure 2A As shown, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulated RS (DM-RS) for channel estimation at the UE (indicated as R for a specific configuration). x However, other DM-RS configurations are possible) and Channel State Information Reference Signal (CSI-RS). RS can also include Beam Measurement RS (BRS), Beam Refinement RS (BRRS), and Phase Tracking RS (PT-RS).

[0053] Figure 2B Examples of various DL channels within a subframe of a frame are shown. The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE comprising six RE Groups (REGs), each REG comprising 12 consecutive REs within an OFDM symbol of an RB. The PDCCH within a BWP can be referred to as a Control Resource Set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during PDCCH monitoring on a CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs can span the channel bandwidth at larger and / or lower frequencies. The Primary Synchronization Signal (PSS) can be within symbol 2 of a specific subframe of the frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. The Secondary Synchronization Signal (SSS) can be within symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the Physical Layer Cell Identifier Group Number and radio frame timing. Based on the Physical Layer Identifier and Physical Layer Cell Identifier Group Number, the UE can determine the Physical Cell Identifier (PCI). Based on the PCI, the UE can determine the location of the DM-RS. The Physical Broadcast Channel (PBCH), carrying the Master Information Block (MIB), can logically be grouped with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block (also known as an SS block (SSB)). The MIB provides the number of RBs and the System Frame Number (SFN) in the system bandwidth. The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not transmitted via the PBCH (such as System Information Block (SIB)), and paging messages.

[0054] As in Figure 2C As shown, some of the REs in the diagram carry DM-RS for channel estimation at the base station (indicated as R for a specific configuration, but other DM-RS configurations are possible). The UE can transmit DM-RS for the Physical Uplink Control Channel (PUCCH) and DM-RS for the Physical Uplink Shared Channel (PUSCH). The PUSCH DM-RS can be transmitted in the first one or two symbols preceding the PUSCH. The PUCCH DM-RS can be transmitted in different configurations depending on whether a short or long PUCCH is transmitted and the specific PUCCH format used. The UE can transmit a Sounding Reference Signal (SRS). The SRS can be transmitted in the last symbol of a subframe. The SRS can have a comb structure, and the UE can transmit the SRS on one of the combs. The SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling on the UL.

[0055] Figure 2D Examples of various UL channels within a subframe of a frame are shown. The PUCCH can be positioned as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and hybrid automatic repeat request (HARQ) acknowledgment (ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUCCH carries data and may additionally be used to carry buffer status reports (BSR), power headroom reports (PHR), and / or UCIs.

[0056] Figure 3This is a block diagram illustrating communication between base station 310 and UE 350 in the access network. In the DL, IP packets from EPC 160 can be provided to controller / processor 375. Controller / processor 375 implements Layer 3 and Layer 2 functions. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Serving Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer. The controller / processor 375 provides: RRC layer functions associated with: broadcasting system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-Radio Access Technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functions associated with: header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with: transmission of upper-layer packet data units (PDUs), error correction via ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with: mapping between logical channels and transport channels, multiplexing of MAC SDUs to transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0057] Transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functions associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection of the transport channel, forward error correction (FEC) encoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. TX processor 316 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase phase shift keying (M-PSK), and M-order quadrature amplitude modulation (M-QAM)). The encoded and modulated symbols can then be divided into parallel streams. Each stream can then be mapped to OFDM subcarriers, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and then combined using inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. Channel estimation from channel estimator 374 can be used to determine coding and modulation schemes and for spatial processing. The channel estimation can be derived from reference signals transmitted by UE 350 and / or channel condition feedback. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can use the corresponding spatial stream to modulate a radio frequency (RF) carrier for transmission.

[0058] At UE 350, each receiver 354RX receives signals via its corresponding antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and RX processor 356 implement Layer 1 functions associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial stream destined for UE 350. If multiple spatial streams are destined for UE 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal consists of a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, along with a reference signal, are recovered and demodulated by determining the most probable signal constellation point transmitted by base station 310. These soft decisions can be based on a channel estimate calculated by channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally transmitted by base station 310 on the physical channel. The data and control signals are then provided to controller / processor 359, which implements Layer 3 and Layer 2 functions.

[0059] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport and logical channels to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0060] Similar to the functions described in conjunction with DL transmissions performed by base station 310, controller / processor 359 provides: RRC layer functions associated with: system information (e.g., MIB, SIB) acquisition, RRC connection and measurement reporting; PDCP layer functions associated with: header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functions associated with: transmission of upper-layer PDUs, error correction via ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with: mapping between logical channels and transport channels, multiplexing of MAC SDUs to TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority processing, and logical channel prioritization.

[0061] The channel estimate derived by the channel estimator 358 from the reference signal or feedback transmitted by the base station 310 can be used by the TX processor 368 to select appropriate coding and modulation schemes, as well as to facilitate spatial processing. The spatial stream generated by the TX processor 368 can be provided to different antennas 352 via a separate transmitter 354TX. Each transmitter 354TX can use the corresponding spatial stream to modulate the RF carrier for transmission.

[0062] UL transmission at base station 310 is handled in a manner similar to that described for the receiver functions integrated at UE 350. Each receiver 318RX receives signals via its corresponding antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides the information to the RX processor 370.

[0063] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between the transport channel and the logical channel to recover IP packets from the UE 350. IP packets from the controller / processor 375 may be provided to the EPC 160. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0064] At least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform and Figure 1 The SFN mode component 198 relates to various aspects.

[0065] At least one of the TX processor 316, RX processor 370, and controller / processor 375 can be configured to perform operations related to... Figure 1 The SFN mode component 199 relates to various aspects.

[0066] Some wireless communication systems can be built on the concept of a UE communicating with a serving base station at a given time. In 5G NR communication systems, multi-TRP technology, where a UE can simultaneously receive multiple data streams from different TRPs, can be used to enhance the robustness, coverage, and capacity of wireless communication systems. For example, UEs at the cell edge may be provided with low Quality of Service (QoS) due to relatively long distances from base stations and poor channel conditions (where inter-cell interference is more likely). Multi-TRP technology can be used to improve the robustness and coverage of UEs at the cell edge and can also be used to improve reliability in various use cases, such as high-speed train (HST) use cases.

[0067] SFN is one of the available multi-TRP technologies. With SFN, the same user data can be transmitted through multiple TRPs on the same frequency and time resources. For example, a UE can receive the same PDSCH from multiple TRPs on the same frequency and time resources. Without SFN, such as... Figure 4A As shown, UE 402 can communicate with base station 404 on beam #1 406, which includes both transmit and receive beams. Two options are available for SFN: transparent SFN and non-transparent SFN. In transparent SFN, as... Figure 4B As shown, UE 402 may not be aware that the TRP transmission beam included in beam #2 406 is provided from separate TRPs 404A and 404B. Transparent SFN implementations can be performed on the base station side without a UE-side implementation. In non-transparent SFNs, as... Figure 4CAs shown, the UE can receive information at 406 regarding the TRP transmission beam, which is a combination of different beams from different TRPs 404A and 404B.

[0068] SFN can be primarily used for downlink communications, such as PDSCH. To improve overall robustness and coverage, multi-TRP technology can also be used for uplink communications. However, uplink SFN may not be a suitable multi-TRP technology. To support uplink SFN, the UE can have multi-beam simultaneous transmission capability (e.g., multi-panel capability) and can have separate transmission power control for receiving TRPs. This multi-beam simultaneous transmission capability and separate transmission power control may be too power-intensive and / or consume too much space or computational resources for the UE. Additionally, for uplink SFN, the transmission timing (TA) for each TRP may differ, complicating the uplink signaling for the UE. This complex uplink signaling for the UE may further consume resources, which may be inefficient for the UE. Some aspects of this disclosure provide for the use of duplicated uplink TDM, FDM, or SDM in conjunction with downlink SFN instead of using uplink SFN.

[0069] Figure 5 The communication flow 500 between UE 502 and multiple TRPs 504, including at least a first TRP and a second TRP, is shown. Figure 5 As shown, UE 502 can receive PDCCH 506 from at least one of a plurality of TRPs 504. UE 502 can be a UE determined to be suitable for SFN downlink communication, such as a UE in the HST, a UE on the cell edge, etc. In some aspects, UE 502 can receive PDCCH 506 from each of the TRPs 504 in the SFN. In some aspects, the UE can be configured to be in SFN mode by one or more TRPs 504. In some aspects, one or more TRPs 504 can configure the UE to be in SFN mode in PDCCH 506. In some aspects, PDCCH 506 can include DCI.

[0070] In some aspects, it may be assumed that each of the multiple TRPs 504 is quasi-co-located (QCL), for example, having the same quasi-co-location. In some aspects, the antenna ports of each of the multiple TRPs 504 may have the same QCL if the properties of the channel transmitting symbols on one antenna port can be inferred from the channel transmitting symbols on another antenna port. In some aspects, the TRPs 504 may have the same QCL according to one or more QCL types: type A, which includes Doppler shift, Doppler spread, average delay, and delay spread; type B, which includes Doppler shift and Doppler spread; type C, which includes average delay and Doppler shift; and type D, which includes spatial reception parameters. In some aspects, the TRPs of the multiple TRPs 504 may have the same type D QCL and may optionally have the same type A, type B, or type C QCL type.

[0071] Multiple TRPs 504 can transmit SFN PDSCH 508 to UE 502. For example, each TRP in the multiple TRPs 504 can use the same frequency and time resources (e.g., frequency channel) to transmit PDSCH 508 to UE 502 via the beam associated with the TRP. Therefore, PDSCH 508 is transmitted via multiple transport beams, each transport beam associated with a TRP in the multiple TRPs 504. In some aspects, PDSCH 508 can be transmitted by each TRP in the TRPs 504 at a different transmission power. PDSCH 508 can carry user data, system information, etc. In some aspects, downlink TCI code points associated with multiple TCI states can be used for SFN, each TCI state can be associated with a TRP. TCI code points can be mapped to each TCI state associated with the corresponding beam (e.g., transmit beam and receive beam pair) used by each TRP in the multiple TRPs 504. For example, as... Figure 6A As shown in Example 600, two TRPs (two are shown for illustrative purposes) TRP1 604A and TRP2 604B can send SFN PDSCH to UE 602 in two TCI states, TCI1 606A and TCI2 606B. Each TCI state can be associated with a transmit / receive beam pair associated with the TRP. If UE 602 is configured in SFN mode, the TCI state associated with the TCI code point can be used for SFN PDSCH reception.

[0072] At 510, UE 502 can determine multiple beams for transmitting the same PUSCH 512. The same PUSCH 512 transmitted via different beams can have the same logical channel and can carry the same uplink user data. In some aspects, the same PUSCH 512 transmitted via different beams can have different redundant versions. The multiple beams used for transmitting the same PUSCH can be multiple TRP receive beams, each TRP receive beam corresponding to (e.g., in the same transmit / receive beam pair) a TRP transmit beam among multiple transmit beams used for transmitting PDSCH 508. In some aspects, UE 502 can determine the multiple beams for transmitting the same PUSCH based on downlink TCI code points or uplink TCI code points. In some aspects, the same SSB / RS or TCI state is configured for the uplink spatial relationship or uplink TCI state of UE 502. For example, the scheduling DCI transmitted in PDCCH 506 can indicate multiple Sounding Reference Signal (SRS) Resource Indicators (SRIs) for PUSCH 512. For SRS resources that include SSB / RS as spatial relationships, each SRI can be associated with a TRP in multiple TRPs 504. UE 502 can determine multiple beams based on the SRIs, each beam being associated with a TRP in multiple TRPs 504.

[0073] The multiple beams determined based on SRI can be multiple beams used to transmit PDSCH. For example, such as Figure 6B As shown in Example 650, if TRP 1 654A of multiple TRPs 504 transmits PDSCH to UE 652 using TRP transmit beam 1 in beam pair 656A, the SSB / RS or TCI status associated with TRP 1 654A and transmit beam 1 can be signaled to UE 602 / 652. UE 602 / 652 can then determine that the TRP receive beam 1 in beam pair 656A corresponding to TRP transmit beam 1 transmits PUSCH 512 to TRP 1 654A. If TRP 2 654B of multiple TRPs 504 transmits PDSCH using TRP transmit beam 2 in beam pair 656B, the SSB / RS or TCI status associated with TRP 2 654B and transmit beam 2 can be signaled to UE 602 / 652. UE 602 / 652 can then determine the TRP receive beam 2 in beam pair 656B corresponding to TRP transmit beam 2, in order to transmit PUSCH 512 to TRP 2 654B.

[0074] In some aspects, instead of mapping a single SRI to an SRS resource associated with a beam of a TRP, a single SRI can be mapped to multiple SRS resources (and corresponding beams) associated with different TRPs. The mapping between SRIs and SRS resources can be explicitly configured or implicitly derived from an SRS resource set configuration. For example, a resource set can be configured to include a corresponding SRS resource associated with each of the multiple TRPs 504. UE 502 can use the configured resource set to determine the multiple beams associated with the SRS resources associated with each of the multiple TRPs 504 to transmit PUSCH 512. Alternatively, a single SRI can be explicitly mapped to a corresponding SRS resource associated with multiple beams.

[0075] In some aspects, active uplink TCI code points can be mapped to multiple uplink TCI states, each uplink TCI state being associated with a TRP (and corresponding beam) in multiple TRPs 504. In such aspects, the source QCL for the uplink TCI state can be the corresponding downlink RS / SSB of the corresponding TRP. For example, the downlink RS / SSB can be included in the previously described downlink TCI code points.

[0076] In some aspects, the same PUSCH 512 can be sent to each of the multiple TRPs 504 using TDM, FDM, or SDM. In some aspects, for each identical PUSCH sent to each of the multiple TRPs 504, the different transmission power, timing advance, redundancy version, modulation order, or other specific transmission parameters of the uplink user data to be carried in the PUSCH do not affect the possibility of differences. In some aspects, the different transmission power, timing advance, redundancy version, modulation order, or other specific transmission parameters of the uplink user data to be carried in the PUSCH can be configured by one or more base stations associated with one or more of the multiple TRPs 504 without affecting the difference in transmission power, timing advance, redundancy version, modulation order, or other specific transmission parameters. In some alternative aspects, the multiple TRPs 504 can be determined by the UE 502 and indicated to one or more base stations associated with the multiple TRPs 504 to facilitate decoding.

[0077] In some aspects, a repetition pattern can be configured or applied for UE 502. For example, the same PUSCH 512 can be sent n times to a first TRP among multiple TRPs 504 via a first beam among multiple beams, and the same PUSCH 512 can be sent m times to a second TRP among multiple TRPs 504 via a second beam among multiple beams. Furthermore, n and m can be integers greater than or equal to 1. For example, if repetition to the first TRP TRP1 using SSB1 and its associated beam is represented by A, and repetition to the second TRP TRP2 using SSB2 and its associated beam is represented by B, then the repetition can be AAAB, AABB, ABBB, etc. In some examples, the number of repetitions, the repetition pattern, etc., can be configurable. In some aspects, if the same PUSCH 512 is sent to each TRP among multiple TRPs 504 using FDM, the number of repetitions n and m can be determined at least in part based on the bandwidth used.

[0078] Figure 7 This is a flowchart 700 of a wireless communication method. The method can be performed by a UE (e.g., UE 104, UE 502; device 902).

[0079] At 702, the UE can receive SFNPDSCH from multiple TRPs, including a first TRP and a second TRP, via multiple beams, where the multiple beams are based on the configured downlink TCI states. For example, refer to Figure 5 UE 502 can receive SFN PDSCH from multiple TRP 504s, which may have QCL assumptions, via multiple beams. The PDSCH can carry the same user data and can be transmitted using the same frequency resources. The PDSCH can be transmitted from multiple TRP 504s at different transmission powers. In some aspects, 702 can be... Figure 9 The receiving component 930 in the middle is used to perform this.

[0080] At 704, the UE can transmit the same PUSCH through each of multiple beams. For example, refer to Figure 5 UE502 can transmit the same uplink user data via each of multiple beams, but with different specific transmission parameters, using the same PUSCH 512. In some aspects, 704 can be... Figure 9 The sending component 934 in the middle is used to perform this.

[0081] Figure 8This is a flowchart 800 of a wireless communication method. This method can be performed by a UE (e.g., UE 104, UE 502; device 902). At 802, the UE can receive SFNPDSCH from multiple TRPs, including a first TRP and a second TRP, via multiple beams, the multiple beams being based on configured downlink TCI states. For example, refer to... Figure 5 UE 502 can receive SFN PDSCH from multiple TRP 504s, which may have QCL assumptions, via multiple beams. The PDSCH can carry the same user data and can be transmitted using the same frequency resources. The PDSCH can be transmitted from multiple TRP 504s at different transmission powers. In some aspects, the same PUSCH can be transmitted via each of the multiple beams through one of TDM, FDM, or SDM. In some aspects, UE 502 can be... Figure 9 The receiving component 930 in the middle is used to perform this.

[0082] At position 804, the UE can determine multiple beams used for uplink transmission. For example, refer to... Figure 5 UE 502 can determine multiple beams for uplink transmission at 510, as previously combined Figure 5 Described. In some aspects, as part of 804, the UE receives a DCI including the SRI at 806. For example, UE 502 can receive a DCI including the SRI (e.g., transmitted in PDCCH 506) from TRP 504, as previously described. Figure 5Described. In some aspects, the DCI may indicate multiple SRIs used for PUSCH. A first SRI may be associated with at least one of the SSBs or RSs of a first TRP among multiple TRPs, and a second SRI may be associated with at least one of the SSBs or RSs of a second TRP among multiple TRPs. Further SRIs may be associated with other TRPs among multiple TRPs (as applicable). In such an aspect, as part of 804, at 808A, the UE may determine the first beam based on the first SRI, based on the fact that a first beam among multiple beams is used to receive at least one of the SSBs or RSs from the first TRP. For example, UE 502 may determine the first beam based on the first SRI, based on the fact that a first beam among multiple beams is used to receive at least one of the SSBs or RSs from the first TRP. As part of 804, at 808B, the UE may determine the second beam based on the second SRI, based on the fact that a second beam among multiple beams is used to receive at least one of the SSBs or RSs from the second TRP. For example, UE 502 may determine the second beam based on a second SRI, based on the fact that the second beam among a plurality of beams is used to receive at least one of an SSB or RS from a second TRP. The UE may also determine the one or more additional beams based on an additional SRI, based on the fact that one or more additional beams among a plurality of beams are used to receive at least one of an SSB or RS from one or more TRPs among a plurality of TRPs. In some aspects, 804 may be... Figure 9 The beam determination component 940 in the middle performs this action.

[0083] In some aspects, the DCI may indicate the SRI used for PUSCH, and the SRI is associated with at least one of the SSB or RS of the first TRP and at least one of the SSB or RS of the second TRP. In such an aspect, as part of 804, at 808A, the UE may determine the first beam based on the SRI, based on the fact that a first beam of a plurality of beams is used to receive at least one of the SSB or RS from the first TRP. For example, UE 502 may determine the first beam based on the SRI, based on the fact that a first beam of a plurality of beams is used to receive at least one of the SSB or RS from the first TRP. As part of 804, at 808B, the UE may determine the second beam based on the SRI, based on the fact that a second beam of a plurality of beams is used to receive at least one of the SSB or RS from the second TRP. For example, UE 502 may determine the second beam based on the SRI, based on the fact that a second beam of a plurality of beams is used to receive at least one of the SSB or RS from the second TRP. The UE can also determine the one or more additional beams based on SRI, based on the fact that one or more additional beams among multiple beams are used to receive at least one of SSB or RS from one or more TRPs among multiple TRPs.

[0084] In some aspects, as part of 804, at 810, the UE can determine multiple uplink TCI states. A first TCI state in the TCI states can be associated with at least one of the SSB or RS of a first TRP, and a second TCI state in the TCI states can be associated with at least one of the SSB or RS of a second TRP. For example, UE 502 can determine multiple uplink TCI states. In some alternative aspects, the UE can receive multiple uplink TCI states in the DCI at 806. In such an aspect related to uplink TCI states, as part of 804, at 812A, the UE can determine a first beam based on the first TCI state, based on a first beam among multiple beams used to receive at least one of the SSB or RS from the first TRP. For example, UE 502 can determine the first beam based on the first TCI state, based on a first beam among multiple beams used to receive at least one of the SSB or RS from the first TRP. As part of 804, at 812B, the UE can determine the second beam based on a second TCI state, based on the fact that a second beam among a plurality of beams is used to receive at least one of an SSB or RS from a second TRP. For example, UE 502 can determine the second beam based on a second TCI state, based on the fact that a second beam among a plurality of beams is used to receive at least one of an SSB or RS from a second TRP. The UE can also determine one or more additional beams among a plurality of beams based on the fact that one or more additional beams among a plurality of beams are used to receive at least one of an SSB or RS from one or more TRPs among a plurality of TRPs.

[0085] At point 814, the UE can transmit the same PUSCH through each of multiple beams. For example, refer to Figure 5 UE502 can transmit the same uplink user data via each of the multiple beams determined at 804, but with different specific transmission parameters via the same PUSCH 512. In some aspects, 814 can be... Figure 9The transmission component 934 performs this function. In some aspects, the PUSCH can be transmitted through each of a plurality of beams with at least one of different transmit power, different timing advance, or different redundancy versions. In some aspects, different redundancy versions can correspond to at least one repetition of the PUSCH. In some aspects, a base station associated with one or more TRPs in a TRP can signal at least one of different transmit power, different timing advance, or different redundancy versions. In some aspects, at least one of different transmit power, different timing advance, or different redundancy versions can be determined by the UE. In some aspects, the PUSCH can be transmitted n times through a first beam of a plurality of beams and m times through a second beam of a plurality of beams, where n and m are integers greater than or equal to 1.

[0086] Figure 9 Figure 900 illustrates an example of a hardware implementation for device 902. Device 902 may be a UE and includes a cellular baseband processor 904 (also referred to as a modem) coupled to a cellular RF transceiver 922, one or more Subscriber Identity Module (SIM) cards 920, an application processor 906 coupled to a Secure Digital Card (SD) card 908 and a screen 910, a Bluetooth module 912, a Wireless Local Area Network (WLAN) module 914, a Global Positioning System (GPS) module 916, and a power supply 918. The cellular baseband processor 904 communicates with the UE 104 and / or BS 102 / 180 via the cellular RF transceiver 922. The cellular baseband processor 904 may include computer-readable media / memory. The computer-readable media / memory may be non-transitory. The cellular baseband processor 904 is responsible for general processing, including executing software stored on the computer-readable media / memory. When executed by the cellular baseband processor 904, the software causes the cellular baseband processor 904 to perform the various functions described above. The computer-readable medium / storage can also be used to store data manipulated by the cellular baseband processor 904 during software execution. The cellular baseband processor 904 also includes a receiving component 930, a communication manager 932, and a transmitting component 934. The communication manager 932 includes one or more of the components shown. In some aspects, the receiving component 930 can be configured to receive SFNPDSCH from multiple TRPs via multiple beams, for example, as in combination... Figure 7 Frame 702 and Figure 8 Box 802 describes this. In some aspects, the transmitting component 934 can be configured to transmit the same PUSCH through each of a plurality of beams, for example, as in combination Figure 7 The box 704 and Figure 8The components within the communication manager 932 may be stored in a computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 904. The cellular baseband processor 904 may be a component of the UE 350 and may include at least one of memory 360 and / or TX processor 368, RX processor 356, and controller / processor 359. In one configuration, the device 902 may be a modem chip and include only the baseband processor 904, and in another configuration, the device 902 may be the entire UE (e.g., see [link to relevant documentation]). Figure 3 (350) and includes the aforementioned additional module of device 902.

[0087] The communication manager 932 includes a beam determination component 940 configured to determine multiple beams, such as in combination. Figure 8 As described in 804. The apparatus may include the ability to perform... Figure 7 and 8 The algorithm in the flowchart above consists of additional components in each box. Therefore, it can be executed by these components. Figure 7 and 8 Each box in the above flowchart, and the apparatus may include one or more of those components. A component may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0088] In one configuration, device 902 (specifically, cellular baseband processor 904) includes: a unit for receiving SFN PDSCH from multiple TRPs, including a first TRP and a second TRP, via multiple beams, the multiple beams being based on configured downlink TCI states; and a unit for transmitting the same PUSCH via each of the multiple beams. The aforementioned unit may be one or more components of device 902 configured to perform the functions described therein. As described above, device 902 may include TX processor 368, RX processor 356, and controller / processor 359. Therefore, in one configuration, the aforementioned unit may be TX processor 368, RX processor 356, and controller / processor 359 configured to perform the functions described therein.

[0089] Figure 10This is a flowchart 1000 of a wireless communication method. This method can be performed by a base station (e.g., base station 102 / 180, TRP 504; device 1202). At 1002, the base station can transmit SFN PDSCH from multiple TRPs, including a first TRP and a second TRP, via multiple beams, the multiple beams being based on configured downlink TCI states. For example, refer to... Figure 5 A TRP 504 can transmit SFN PDSCH from multiple TRP 504s, which may have QCL assumptions, via multiple beams. The PDSCH can carry the same user data and can be transmitted using the same frequency resources. The PDSCH can be transmitted from multiple TRP 504s using different transmit powers. In some aspects, 1002 can be... Figure 12 The PDSCH component 1242 in the PDSCH module performs this operation. In some aspects, the same PDSCH can be received via TDM, FDM, or SDM through each of the multiple beams.

[0090] At position 1004, the base station can receive the same PUSCH through each of multiple beams. For example, refer to... Figure 5 TRP 504 can receive the same PUSCH 512 carrying the same uplink user data, but with different specific transmission parameters, through each of the multiple beams defined at 804. In some aspects, 1004 can be... Figure 12 The PUSCH component 1246 performs this operation. In some aspects, the same PUSCH can be received via each of a plurality of beams using at least one of different transmit powers, different timing advances, or different redundancy versions. In some aspects, the same PUSCH can be received n times via a first beam and m times via a second beam, where n and m are integers greater than or equal to 1. In some aspects, the reception of the same PUSCH is via both the first and second beams.

[0091] Figure 11 This is a flowchart 1100 of a wireless communication method. This method can be performed by a base station (e.g., base station 102 / 180, TRP 504; device 1202). At 1102, the base station can transmit SFN PDSCH from multiple TRPs, including a first TRP and a second TRP, via multiple beams, the multiple beams being based on configured downlink TCI states. For example, refer to... Figure 5TRP504 can transmit SFN PDSCH from multiple TRP504s, which may have QCL assumptions, via multiple beams. The PDSCH can carry the same user data and can be transmitted using the same frequency resources. The PDSCH can be transmitted from multiple TRP504s using different transmit powers. In some aspects, 1102 can be... Figure 12 The PDSCH component 1242 in the PDSCH module performs this operation. In some aspects, the same PDSCH can be received via TDM, FDM, or SDM through each of the multiple beams.

[0092] At position 1104, the base station can transmit DCI. For example, refer to... Figure 5 TRP 504 can send DCI to UE 502 (e.g., in PDCCH 506). In some aspects, the DCI can indicate multiple SRIs for PUSCH, where a first SRI is associated with at least one of the SSB or RS of a first TRP, and a second SRI is associated with at least one of the SSB or RS of a second TRP. In some aspects, 1104 can be... Figure 12 The DCI component 1244 performs this function. In some aspects, the DCI may indicate a SRI for PUSCH, the SRI being associated with at least one of the SSB or RS of a first TRP and at least one of the SSB or RS of a second TRP. In some aspects, the DCI may indicate multiple UL TCI states, a first TCI state being associated with at least one of the SSB or RS of a first TRP, and a second TCI state being associated with at least one of the SSB or RS of a second TRP.

[0093] At point 1106, the base station can receive the same PUSCH through each of multiple beams. For example, refer to... Figure 5 TRP 504 can receive the same PUSCH 512 carrying the same uplink user data but with different specific transmission parameters through each of the multiple beams defined at 804. In some aspects, 1106 can be... Figure 12 The PUSCH component 1246 performs this operation. In some aspects, the same PUSCH can be received via each of a plurality of beams using at least one of different transmit powers, different timing advances, or different redundancy versions. In some aspects, the same PUSCH can be received n times via a first beam and m times via a second beam, where n and m are integers greater than or equal to 1. In some aspects, the reception of the same PUSCH is via both the first and second beams.

[0094] Figure 12 Figure 1200 illustrates an example of a hardware implementation of device 1202. Device 1202 may be a base station, a component of a base station, or may implement base station functions. In some aspects, device 1202 may include a baseband unit 1204. Baseband unit 1204 may communicate with UE 104 via cellular RF transceiver 1222. Baseband unit 1204 may include computer-readable medium / memory. Baseband unit 1204 is responsible for general processing, including executing software stored on computer-readable medium / memory. When executed by baseband unit 1204, the software causes baseband unit 1204 to perform the various functions described above. Computer-readable medium / memory may also be used to store data manipulated by baseband unit 1204 when executing the software. Baseband unit 1204 also includes a receiving component 1230, a communication manager 1232, and a transmitting component 1234. Communication manager 1232 includes one or more of the components shown. The components within the communication manager 1232 may be stored in a computer-readable medium / memory and / or configured as hardware within the baseband unit 1204. The baseband unit 1204 may be a component of the base station 310 and may include at least one of the memory 376 and / or the TX processor 316, the RX processor 370, and the controller / processor 375.

[0095] Communication manager 1232 may include PDSCH component 1242, which can transmit SFN PDSCH from multiple TRPs via multiple beams, for example, as in combination Figure 10 Box 1002 and Figure 11 The communication manager 1232 may also include a DCI component 1244, which can send DCI signals, for example, as described in box 1102. Figure 11 The communication manager 1232 may also include a PUSCH component 1246, which can receive the same PUSCH through each of a plurality of beams, for example, as in combination. Figure 10 Box 1004 and Figure 11 The box 1106 describes this.

[0096] The device may include execution Figure 10 and 11 The flowchart shows the algorithm as an additional component in each box. Therefore, it can be executed by the component. Figure 10 and 11 Each box in the flowchart, and the apparatus may include one or more of those components. A component may be one or more hardware components specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0097] As shown, device 1202 may include various components configured for various functions. In one configuration, device 1202 (specifically, baseband unit 1204) includes a unit for transmitting SFN PDSCH from multiple TRPs, including a first TRP and a second TRP, via multiple beams, the multiple beams being based on a configured DL TCI state. Baseband unit 1204 may also include a unit for receiving the same PUSCH via each of the multiple beams. Baseband unit 1204 may also include a unit for transmitting DCI. These units may be one or more components of device 1202 configured to perform the functions described therein. As described above, device 1202 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Therefore, in one configuration, these units may be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions described therein.

[0098] It should be understood that the specific order or hierarchy of the boxes in the disclosed process / flowchart is illustrative of the example method. It should be understood that the specific order or hierarchy of the boxes in the process / flowchart may be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims give the elements of each box in the order shown, but this does not imply limitation to the specific order or hierarchy given.

[0099] The foregoing description is provided to enable any person skilled in the art to implement the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are given the full scope consistent with the textual claims, wherein reference to the singular form of an element, unless expressly stated otherwise, is not intended to mean “one and only one,” but rather “one or more.” Terms such as “if,” “when,” and “while,” should be interpreted as “under the condition of,” rather than implying a direct temporal relationship or reaction. That is, these phrases (e.g., “when”) do not imply an immediate action in response to the occurrence of an action or during the occurrence of such action, but merely that the action will occur if the condition is met, without requiring a specific or immediate temporal constraint on the occurrence of the action. The term “exemplary” is used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred over or superior to other aspects. Unless expressly stated otherwise, the term “some” refers to one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" may be only A, only B, only C, A and B, A and C, B and C, or A and B and C, wherein any such combination may contain one or more members of A, B, or C. All structural and functional equivalents of the elements throughout the various aspects described in this disclosure are expressly incorporated herein by reference and intended to be included by the claims, and such structural and functional equivalents are known to or will be known later to those skilled in the art. Furthermore, nothing disclosed herein is intended to be offered to the public, whether or not such disclosure is explicitly stated in the claims. Terms such as “module,” “mechanism,” “element,” “device,” etc., are not necessarily substitutes for the term “unit.” Therefore, no claim element should be interpreted as a unit plus a function unless the element is explicitly stated using the phrase “unit for…”.

[0100] The following aspects are illustrative only and may be combined with, but not limited to, other aspects or teachings described herein.

[0101] Aspect 1 is an apparatus for wireless communication at a UE, comprising: a memory; and at least one processor coupled to the memory and configured to: receive SFN PDSCH from a plurality of TRPs including a first TRP and a second TRP via a plurality of beams, the plurality of beams being based on a configured DL TCI state; and transmit the same PUSCH via each of the plurality of beams.

[0102] Aspect 2 is the apparatus according to aspect 1, wherein the same PUSCH is transmitted via each of the plurality of beams by one of TDM, FDM or SDM.

[0103] Aspect 3 is an apparatus according to any one of Aspects 1-2, wherein the at least one processor coupled to the memory is further configured to: receive a DCI indicating a plurality of SRIs for the PUSCH, a first SRI of the SRIs being associated with at least one of the SSBs or RSs of the first TRP, and a second SRI of the SRIs being associated with at least one of the SSBs or RSs of the second TRP; determine a first beam based on the first SRI and based on a first beam of the plurality of beams used to receive the at least one of the SSBs or RSs from the first TRP; and determine a second beam based on the second SRI and based on a second beam of the plurality of beams used to receive the at least one of the SSBs or RSs from the second TRP, wherein the transmission of the same PUSCH is via the first beam and the second beam.

[0104] Aspect 4 is an apparatus according to any one of Aspects 1-3, wherein the at least one processor coupled to the memory is further configured to: receive a DCI indicating an SRI for the PUSCH, the SRI being associated with at least one of the SSB or RS of the first TRP and at least one of the SSB or RS of the second TRP; determine a first beam based on the SRI, based on a first beam of the plurality of beams used to receive the at least one of the SSB or RS from the first TRP; and determine a second beam based on the SRI, based on a second beam of the plurality of beams used to receive the at least one of the SSB or RS from the second TRP, wherein the transmission of the same PUSCH is via the first beam and the second beam.

[0105] Aspect 5 is an apparatus according to any one of Aspects 1-4, wherein the at least one processor coupled to the memory is further configured to: determine a plurality of UL TCI states, a first TCI state of the TCI states being associated with at least one of the SSB or RS of the first TRP, and a second TCI state of the TCI states being associated with at least one of the SSB or RS of the second TRP; determine a first beam based on the first TCI state, based on a first beam of the plurality of beams being used to receive the at least one of the SSB or RS from the first TRP; and determine a second beam based on the second TCI state, based on a second beam of the plurality of beams being used to receive the at least one of the SSB or RS from the second TRP, wherein the transmission of the same PUSCH is via the first beam and the second beam.

[0106] Aspect 6 is an apparatus according to any one of Aspects 1-5, wherein the at least one processor coupled to the memory is further configured to: receive a DCI indicating a plurality of UL TCI states, a first TCI state of the plurality of TCI states being associated with at least one of the SSB or RS of the first TRP, and a second TCI state of the plurality of TCI states being associated with at least one of the SSB or RS of the second TRP; determine a first beam based on the first TCI state and based on a first beam of the plurality of beams being used to receive at least one of the SSB or RS from the first TRP; and determine a second beam based on the second TCI state and based on a second beam of the plurality of beams being used to receive at least one of the SSB or RS from the second TRP, wherein the transmission of the same PUSCH is via the first beam and the second beam.

[0107] Aspect 7 is an apparatus according to any one of Aspects 1-6, wherein the same PUSCH is transmitted through each of the plurality of beams using at least one of different transmit power, different timing advance, or different redundancy versions.

[0108] Aspect 8 is an apparatus according to any one of aspects 1-7, wherein the different redundant versions correspond to at least one repetition of the PUSCH.

[0109] Aspect 9 is an apparatus according to any one of aspects 1-8, wherein at least one of the different transmit power, the different timing advance, or the different redundancy versions is signaled by a base station associated with one or more of the TRPs.

[0110] Aspect 10 is an apparatus according to any one of aspects 1-9, wherein at least one of the different transmit power, the different timing advance, or the different redundancy version is determined by the UE.

[0111] Aspect 11 is an apparatus according to any one of aspects 1-10, wherein the same PUSCH is transmitted n times through a first beam of the plurality of beams and m times through a second beam of the plurality of beams, wherein n and m are integers greater than or equal to 1.

[0112] Aspect 12 is an apparatus according to any one of aspects 1-11, wherein the at least one processor coupled to the memory is further configured to: receive a DCI comprising uplink TCI code points mapped to a plurality of UL TCI states, a first TCI state being associated with at least one of the SSB or RS of the first TRP, and a second TCI state being associated with at least one of the SSB or RS of the second TRP; determine a first beam based on the first TCI state and based on a first beam of the plurality of beams used to receive at least one of the SSB or RS from the first TRP; and determine a second beam based on the second TCI state and based on a second beam of the plurality of beams used to receive at least one of the SSB or RS from the second TRP, wherein the transmission of the same PUSCH is via the first beam and the second beam.

[0113] Aspect 13 is an apparatus according to any one of Aspects 1-12, wherein the at least one processor coupled to the memory is further configured to: receive a DCI comprising uplink TCI code points mapped to a plurality of UL TCI states, a first TCI state being associated with at least one of the SSB or RS of the first TRP, and a second TCI state being associated with at least one of the SSB or RS of the second TRP; determine a first beam based on the first TCI state and based on a first beam of the plurality of beams being used to receive the at least one of the SSB or RS from the first TRP; and determine a second beam based on the second TCI state and based on a second beam of the plurality of beams being used to receive the at least one of the SSB or RS from the second TRP, wherein the transmission of the same PUSCH is via the first beam and the second beam.

[0114] Aspect 14 is a method for wireless communication at a UE, comprising: receiving an SFN PDSCH from a plurality of TRPs including a first TRP and a second TRP via a plurality of beams, the plurality of beams being based on a configured DL TCI state; and transmitting a PUSCH via each of the plurality of beams.

[0115] Aspect 15 is the method according to aspect 14, wherein the PUSCH is transmitted via each of the plurality of beams through one of TDM, FDM or SDM.

[0116] Aspect 16 is a method according to any one of aspects 14-15, further comprising: receiving a DCI indicating a plurality of SRIs for the PUSCH, a first SRI of the SRIs being associated with at least one of an SSB or RS of the first TRP, and a second SRI of the SRIs being associated with at least one of an SSB or RS of the second TRP; determining a first beam based on the first SRI and based on a first beam of the plurality of beams used to receive the at least one of the SSBs or RS from the first TRP; and determining a second beam based on the second SRI and based on a second beam of the plurality of beams used to receive the at least one of the SSBs or RS from the second TRP, wherein the transmission of the PUSCH is via the first beam and the second beam.

[0117] Aspect 17 is a method according to any one of aspects 14-16, further comprising: receiving a DCI indicating a SRI for the PUSCH, the SRI being associated with at least one of an SSB or RS of the first TRP and at least one of an SSB or RS of the second TRP; determining a first beam based on the SRI, based on a first beam of the plurality of beams used to receive the at least one of the SSB or RS from the first TRP; and determining a second beam based on the SRI, based on a second beam of the plurality of beams used to receive the at least one of the SSB or RS from the second TRP, wherein the transmission of the PUSCH is via the first beam and the second beam.

[0118] Aspect 18 is a method according to any one of Aspects 14-17, further comprising: determining a plurality of UL TCI states, wherein a first TCI state of the TCI states is associated with at least one of an SSB or RS of the first TRP, and a second TCI state of the TCI states is associated with at least one of an SSB or RS of the second TRP; determining a first beam based on the first TCI state and based on a first beam of the plurality of beams being used to receive the at least one of the SSB or RS from the first TRP; and determining a second beam based on the second TCI state and based on a second beam of the plurality of beams being used to receive the at least one of the SSB or RS from the second TRP, wherein the transmission of the PUSCH is via the first beam and the second beam.

[0119] Aspect 19 is a method according to any one of Aspects 14-18, further comprising: receiving a DCI indicating a plurality of UL TCI states, a first TCI state of the plurality of TCI states being associated with at least one of an SSB or RS of the first TRP, and a second TCI state of the plurality of TCI states being associated with at least one of an SSB or RS of the second TRP; determining a first beam based on the first TCI state and based on a first beam of the plurality of beams being used to receive the at least one of the SSB or RS from the first TRP; and determining a second beam based on the second TCI state and based on a second beam of the plurality of beams being used to receive the at least one of the SSB or RS from the second TRP, wherein the transmission of the PUSCH is via the first beam and the second beam.

[0120] Aspect 20 is the method according to any one of aspects 14-19, wherein the PUSCH is transmitted through each of the plurality of beams using at least one of different transmit powers, different timing advances, or different redundancy versions.

[0121] Aspect 21 is the method according to any one of aspects 14-20, wherein the different redundant versions correspond to at least one repetition of the PUSCH.

[0122] Aspect 22 is the method according to any one of aspects 14-21, wherein at least one of the different transmit power, the different timing advance, or the different redundancy versions is signaled by a base station associated with one or more of the TRPs.

[0123] Aspect 23 is the method according to any one of aspects 14-22, wherein at least one of the different transmit power, the different timing advance, or the different redundancy version is determined by the UE.

[0124] Aspect 24 is the method according to any one of aspects 14-23, wherein the PUSCH is transmitted n times through a first beam of the plurality of beams and m times through a second beam of the plurality of beams, wherein n and m are integers greater than or equal to 1.

[0125] Aspect 25 is a method according to any one of aspects 14-24, further comprising: receiving a DCI including uplink TCI code points mapped to a plurality of ULTCI states, a first TCI state being associated with at least one of an SSB or RS of the first TRP, and a second TCI state being associated with at least one of an SSB or RS of the second TRP; determining a first beam based on the first TCI state and based on a first beam of the plurality of beams used to receive the at least one of the SSB or RS from the first TRP; and determining a second beam based on the second TCI state and based on a second beam of the plurality of beams used to receive the at least one of the SSB or RS from the second TRP, wherein the transmission of the same PUSCH is via the first beam and the second beam.

[0126] Aspect 26 is a method for wireless communication at a base station, comprising: a memory; and at least one processor coupled to the memory and configured to: transmit SFN PDSCH from a plurality of TRPs including a first TRP and a second TRP via a plurality of beams, the plurality of beams being based on a configured DL TCI state; and receive the same PUSCH via each of the plurality of beams.

[0127] Aspect 27 is the apparatus according to aspect 26, wherein the same PUSCH is received by each of the plurality of beams via one of TDM, FDM or SDM.

[0128] Aspect 28 is an apparatus according to any one of aspects 26-27, wherein the same PUSCH is received through each of the plurality of beams using at least one of different transmit power, different timing advance, or different redundancy versions.

[0129] Aspect 29 is an apparatus according to any one of aspects 26-28, wherein the same PUSCH is received n times by a first beam of the plurality of beams and m times by a second beam of the plurality of beams, wherein n and m are integers greater than or equal to 1.

[0130] Aspect 30 is a method for wireless communication at a base station, comprising: transmitting an SFN PDSCH from a plurality of TRPs including a first TRP and a second TRP via a plurality of beams, the plurality of beams being based on a configured DL TCI state; and receiving the same PUSCH via each of the plurality of beams.

[0131] Aspect 31 is a method for implementing wireless communication in any of aspects 1 to 13.

[0132] Aspect 32 is a device for wireless communication, including units for implementing any one of aspects 1 to 13.

[0133] Aspect 33 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 1 to 13.

[0134] Aspect 34 is a method for implementing wireless communication in any of aspects 26 to 29.

[0135] Aspect 35 is a device for wireless communication, including units for implementing any one of aspects 26 to 29.

[0136] Aspect 36 is a computer-readable medium storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 26 to 29.

Claims

1. An apparatus for wireless communication at a user equipment (UE), comprising: Memory; as well as At least one processor, coupled to the memory, is configured to: The Single Frequency Network (SFN) Physical Downlink Shared Channel (PDSCH) is received from multiple TRPs, including a first Transmit Receive Point (TRP) and a second TRP, using multiple beams based on the configured Downlink (DL) Transmission Configuration Indicator (TCI) state. The plurality of beams are determined for uplink transmission based on at least one of the following: Receive downlink control information (DCI) including sounding reference signal (SRS) resource indicator (SRI) or multiple uplink TCI states; or Identify multiple uplink TCI states; as well as The same Physical Uplink Shared Channel (PUSCH) is transmitted through each of the plurality of beams.

2. The apparatus according to claim 1, wherein, The same PUSCH is transmitted through each of the plurality of beams via one of time division multiplexing (TDM), frequency division multiplexing (FDM), or space division multiplexing (SDM).

3. The apparatus according to claim 1, wherein, The at least one processor coupled to the memory is further configured to: Receive DCI indicating a plurality of SRS SRIs for the PUSCH, wherein a first SRI of the SRIs is associated with at least one of a synchronization signal block (SSB) or a reference signal (RS) of the first TRP, and a second SRI of the SRIs is associated with at least one of a SSB or an RS of the second TRP. Based on the first SRI, the first beam is determined based on the fact that the first beam among the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the second SRI, the second beam is determined based on the fact that a second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

4. The apparatus according to claim 1, wherein, The at least one processor coupled to the memory is further configured to: Receive DCI indicating the SRS SRI for the PUSCH, the SRI being associated with at least one of the synchronization signal block (SSB) or reference signal (RS) of the first TRP and at least one of the SSB or RS of the second TRP; Based on the SRI, the first beam is determined based on the fact that the first beam of the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the SRI, the second beam is determined based on the fact that a second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

5. The apparatus according to claim 1, wherein, The at least one processor coupled to the memory is further configured to: Multiple uplink (UL) TCI states are determined, wherein a first TCI state is associated with at least one of the synchronization signal block (SSB) or reference signal (RS) of the first TRP, and a second TCI state is associated with at least one of the SSB or RS of the second TRP. Based on the first TCI state, the first beam is determined based on the fact that the first beam among the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the second TCI state, the second beam is determined based on the fact that the second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

6. The apparatus according to claim 1, wherein, The at least one processor coupled to the memory is further configured to: Receive a DCI indicating multiple uplink (UL) TCI states, wherein a first TCI state is associated with at least one of the synchronization signal block (SSB) or reference signal (RS) of the first TRP, and a second TCI state is associated with at least one of the SSB or RS of the second TRP. Based on the first TCI state, the first beam is determined based on the fact that the first beam among the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the second TCI state, the second beam is determined based on the fact that the second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

7. The apparatus according to claim 1, wherein, The same PUSCH is transmitted through each of the plurality of beams using at least one of different transmit powers, different timing advances, or different redundancy versions.

8. The apparatus according to claim 7, wherein, The different redundant versions correspond to at least one repetition of the PUSCH.

9. The apparatus according to claim 7, wherein, At least one of the different transmit power, the different timing advance, or the different redundancy version is notified by a signal from a base station associated with one or more of the TRPs.

10. The apparatus according to claim 7, wherein, At least one of the different transmit power, the different timing advance, or the different redundancy version is determined by the UE.

11. The apparatus according to claim 1, wherein, The same PUSCH is transmitted n times through the first beam of the plurality of beams and m times through the second beam of the plurality of beams, where n and m are integers greater than or equal to one.

12. The apparatus according to claim 1, wherein, The at least one processor coupled to the memory is further configured to: Receive DCI including uplink TCI code points mapped to multiple uplink (UL) TCI states, wherein a first TCI state is associated with at least one of the synchronization signal block (SSB) or reference signal (RS) of the first TRP, and a second TCI state is associated with at least one of the SSB or RS of the second TRP. Based on the first TCI state, the first beam is determined based on the fact that the first beam among the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the second TCI state, the second beam is determined based on the fact that the second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

13. A method for wireless communication at a user equipment (UE), comprising: The Single Frequency Network (SFN) Physical Downlink Shared Channel (PDSCH) is received from multiple TRPs, including a first Transmit Receive Point (TRP) and a second TRP, using multiple beams based on the configured Downlink (DL) Transmission Configuration Indicator (TCI) state. The plurality of beams are determined for uplink transmission based on at least one of the following: Receive downlink control information (DCI) including sounding reference signal (SRS) resource indicator (SRI) or multiple uplink TCI states; or Identify multiple uplink TCI states; as well as The same Physical Uplink Shared Channel (PUSCH) is transmitted through each of the plurality of beams.

14. The method according to claim 13, wherein, The PUSCH is transmitted through each of the plurality of beams via one of time division multiplexing (TDM), frequency division multiplexing (FDM), or space division multiplexing (SDM).

15. The method of claim 13, further comprising: Receive DCI indicating a plurality of SRS SRIs for the PUSCH, wherein a first SRI of the SRIs is associated with at least one of a synchronization signal block (SSB) or a reference signal (RS) of the first TRP, and a second SRI of the SRIs is associated with at least one of a SSB or an RS of the second TRP. Based on the first SRI, the first beam is determined based on the fact that the first beam among the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the second SRI, the second beam is determined based on the fact that a second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

16. The method of claim 15, further comprising: Receive DCI indicating the SRS SRI for the PUSCH, the SRI being associated with at least one of the synchronization signal block (SSB) or reference signal (RS) of the first TRP and at least one of the SSB or RS of the second TRP; Based on the SRI, the first beam is determined based on the fact that the first beam of the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the SRI, the second beam is determined based on the fact that a second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

17. The method of claim 13, further comprising: Multiple uplink (UL) TCI states are determined, wherein a first TCI state is associated with at least one of the synchronization signal block (SSB) or reference signal (RS) of the first TRP, and a second TCI state is associated with at least one of the SSB or RS of the second TRP. Based on the first TCI state, the first beam is determined based on the fact that the first beam among the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the second TCI state, the second beam is determined based on the fact that the second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

18. The method of claim 13, further comprising: Receive a DCI indicating multiple uplink (UL) TCI states, wherein a first TCI state is associated with at least one of the synchronization signal block (SSB) or reference signal (RS) of the first TRP, and a second TCI state is associated with at least one of the SSB or RS of the second TRP. Based on the first TCI state, the first beam is determined based on the fact that the first beam among the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the second TCI state, the second beam is determined based on the fact that the second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

19. The method according to claim 13, wherein, The PUSCH is transmitted through each of the plurality of beams using at least one of different transmit powers, different timing advances, or different redundancy versions.

20. The method according to claim 19, wherein, The different redundant versions correspond to at least one repetition of the PUSCH.

21. The method according to claim 19, wherein, At least one of the different transmit power, the different timing advance, or the different redundancy version is notified by a signal from a base station associated with one or more of the TRPs.

22. The method according to claim 19, wherein, At least one of the different transmit power, the different timing advance, or the different redundancy version is determined by the UE.

23. The method according to claim 13, wherein, The PUSCH is transmitted n times through the first beam of the plurality of beams and m times through the second beam of the plurality of beams, where n and m are integers greater than or equal to one.

24. The method of claim 13, further comprising: Receive DCI including uplink TCI code points mapped to multiple uplink (UL) TCI states, wherein a first TCI state is associated with at least one of the synchronization signal block (SSB) or reference signal (RS) of the first TRP, and a second TCI state is associated with at least one of the SSB or RS of the second TRP. Based on the first TCI state, the first beam is determined based on the fact that the first beam among the plurality of beams is used to receive the SSB or the RS from the first TRP; as well as Based on the second TCI state, the second beam is determined based on the fact that the second beam among the plurality of beams is used to receive at least one of the SSB or the RS from the second TRP. The transmission of the same PUSCH is carried out via the first beam and the second beam.

25. An apparatus for wireless communication at a base station, comprising: Memory; as well as At least one processor, coupled to the memory, is configured to: The Single Frequency Network (SFN) Physical Downlink Shared Channel (PDSCH) is transmitted from multiple TRPs, including a first Transmit Receive Point (TRP) and a second TRP, using multiple beams based on the configured Downlink (DL) Transmission Configuration Indicator (TCI) state. Send downlink control information (DCI) including probe reference signal (SRS) resource indicator (SRI) or multiple uplink TCI states; as well as The same Physical Uplink Shared Channel (PUSCH) is received through each of the plurality of beams.

26. The apparatus according to claim 25, wherein, The same PUSCH is received through each of the plurality of beams via one of time division multiplexing (TDM), frequency division multiplexing (FDM), or space division multiplexing (SDM).

27. The apparatus according to claim 25, wherein, The same PUSCH is received through each of the plurality of beams using at least one of different transmit powers, different timing advances, or different redundancy versions.

28. The apparatus according to claim 25, wherein, The same PUSCH is received n times through the first beam of the plurality of beams and m times through the second beam of the plurality of beams, where n and m are integers greater than or equal to one.

29. A method for wireless communication at a base station, comprising: The Single Frequency Network (SFN) Physical Downlink Shared Channel (PDSCH) is transmitted from multiple TRPs, including a first Transmit Receive Point (TRP) and a second TRP, using multiple beams based on the configured Downlink (DL) Transmission Configuration Indicator (TCI) state. Send downlink control information (DCI) including probe reference signal (SRS) resource indicator (SRI) or multiple uplink TCI states; as well as The same Physical Uplink Shared Channel (PUSCH) is received through each of the plurality of beams.

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