Multiple quasi co-location relationship for a single port

Abstract

A UE receives, from a base station, a configuration of multiple quasi-colocation (QCL) Type-D relations for a single-port reference signal (RS) for radio link management (RLM) or beam failure detection (BFD). The UE transmits or receives, from the base station, a single frequency network (SFN) communication based on the multiple QCL Type-D relations for the single-port RLM or BFD RS, and performs a radio link or BFD measurement on the SFN communication based on the configuration of the multiple QCL Type-D relations for the single-port RS for RLM or BFD.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit and priority of U.S. Provisional Application S / N. 63 / 085,907, filed September 30, 2020, entitled "Multi Quasi Co-Location Relationship for a Single Port for Radio Link Monitoring or Beam Failure Detection Reference Signal," and U.S. Patent Application No. 17 / 488,207, filed September 28, 2021, entitled "Multi Quasi Co-Location Relationship for a Single Port for Radio Link Monitoring or Beam Failure Detection Reference Signal," which are expressly incorporated herein by reference in their entirety. Technical Field

[0003] This disclosure generally relates to communication systems, and more particularly to wireless communication based on directional beams.

[0004] introduction

[0005] 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 that enable 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.

[0006] 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, promulgated by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT), and other requirements. 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.

[0007] Brief Overview

[0008] The following provides a brief overview of one or more aspects to offer a basic understanding of such aspects. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify the key or decisive elements of all aspects, nor to define 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 an introduction to the more detailed description that follows.

[0009] In one aspect of this disclosure, a method, computer-readable medium, and apparatus for wireless communication at a user equipment (UE) are provided. The apparatus receives from a base station a configuration of multiple quasi-co-location (QCL) type D relationships for a single-port reference signal (RS) used for radio link management (RLM) or beam fault detection (BFD). The apparatus transmits or receives single-frequency network (SFN) communication from the base station based on the multiple QCL type D relationships for the single-port RLM or BFD RS, and performs radio link or BFD measurements on the SFN communication based on the configuration of the multiple QCL type D relationships for the single-port RS used for RLM or BFD.

[0010] In another aspect of this disclosure, a method, computer-readable medium, and apparatus for wireless communication at a base station are provided. The apparatus transmits to a UE a configuration of multiple QCL type D relationships for a single-port RS used for RLM or BFD. The apparatus transmits or receives SFN communication with the UE based on the multiple QCL type D relationships for the single-port RS used for RLM or BFD.

[0011] To achieve the foregoing and related objectives, these one or more aspects include the features fully described below and specifically pointed out in the claims. The following description and figures illustrate some illustrative features of these one or more aspects. However, these features merely indicate a few of the various ways in which the principles of these various aspects may be employed, and this description is intended to cover all such aspects and their equivalents. Brief description of the attached diagram

[0013] Figure 1 This is a diagram illustrating an example of a wireless communication system and access network.

[0014] Figure 2A This is an example illustration of the first frame explaining various aspects of this disclosure.

[0015] Figure 2B This is a diagram illustrating an example of a DL channel within a subframe according to various aspects of this disclosure.

[0016] Figure 2C This is an example illustration of the second frame explaining various aspects of this disclosure.

[0017] Figure 2D This is a diagram illustrating an example of a UL channel within a subframe according to various aspects of this disclosure.

[0018] Figure 3 This is a diagram illustrating an example of a base station and user equipment (UE) in an access network.

[0019] Figure 4A , 4B The diagram illustrates full-duplex wireless communication, along with the 4C.

[0020] Figure 5 Examples of in-band full-duplex (IBFD) resources and sub-band frequency division duplex (FDD) resources used for full-duplex communication are explained.

[0021] Figure 6 An example communication flow between the UE and the base station is explained, which includes the configuration of multiple QCL type D relationships for a single-port RLM or BFDRS.

[0022] Figure 7A and 7B This is a flowchart of a method for performing wireless communication at the UE, which includes receiving and applying configurations for multiple QCL type D relationships for a single-port RLM or BFD RS.

[0023] Figure 8 This is a diagram illustrating an example of the hardware implementation of the example device.

[0024] Figure 9A and 9BThis is a flowchart of a method for conducting wireless communication at a base station, which includes providing configuration of multiple QCL type D relationships for a single-port RLM or BFD RS.

[0025] Figure 10 This is a diagram illustrating an example of the hardware implementation of the example device.

[0026] Detailed description

[0027] The UE and / or base station can communicate in full-duplex mode, where uplink and downlink communication are exchanged on the same frequency band during overlapping times. The UE and base station can use one or more directional beams to exchange communication. The beam between the UE and the base station may become blocked, which could lead to downlink and / or uplink degradation, resulting in beam failure. As an example, in full-duplex mode, the UE or base station may experience self-interference with the beam, causing beam failure in downlink communication. The base station and the UE can perform beam training to determine the optimal receive and transmit directions for continuous communication. The base station's transmit and receive directions may or may not be the same. The UE's transmit and receive directions may or may not be the same.

[0028] The aspects presented herein enhance the reliability of single-frequency network (SFN) transmissions by providing multiple TCI state / spatial relationships (e.g., QCL type D RS) for single-port RSs used for radio link monitoring (RLM) or beam fault detection (BFD). The aspects presented herein support single-layer transmission and / or reception using multiple beams (such as two beams). The base station can provide the UE with a configuration for multiple QCL type D relationships (such as two QCL type D relationships) for single-port RSs used for RLM or BFD. As an example, for half-duplex mode, the base station can configure a non-zero channel state information reference signal (NZP-CSI-RS) resource configuration in the RLM RS or BFD RS configuration to include multiple TCI states (e.g., two TCI states). The UE can then perform RLM or BFD measurements on the SFN communication based on the configuration of multiple QCL type D relationships for single-port RSs used for RLM or BFD.

[0029] The configuration of multiple QCL type D relationships for single-port RS used in RLM or BFD provides improvements in RLM or BFD measurements by supporting single-layer transmission and / or reception using multiple beams.

[0030] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and is not intended to represent only the configurations in which the concepts described herein can be practiced. This detailed description includes specific details to provide a thorough 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.

[0031] 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 explained 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 as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0032] As an example, an element, or any part of an element, or any combination of elements, may 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 functionalities described throughout this disclosure. One or more processors in a processing system can execute software. Software should be broadly interpreted as instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms.

[0033] 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. Computer-readable media include computer storage media. Storage media may be any available medium accessible to a computer. By way of example and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disc storage, magnetic disk storage, other magnetic storage devices, combinations of these types of computer-readable media, or any other medium capable of being used to store computer-executable code in the form of instructions or data structures accessible to a computer.

[0034] While aspects 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 aspects described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, implementations and / or devices may be derived via integrated chip implementations and other non-modular component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / shopping devices, medical devices, AI-enabled devices, etc.). While some examples may or may not be specific to particular use cases or applications, broad applicability of the described aspects is possible. 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 aspects. In some practical settings, devices incorporating the described aspects and features may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals requires several components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The aspects described herein are intended to be implemented in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or decomposed components, end-user equipment, etc., of various sizes, shapes, and configurations.

[0035] Figure 1 This is a diagram illustrating an example of a wireless communication system and access network 100. The wireless communication system (also known as a wireless wide area network (WWAN)) includes base station 102 or 180, UE 104, evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). UE 104 and / or base station 102 or 108 can communicate in full-duplex mode, in which uplink and downlink communication are exchanged on the same frequency band during overlapping times. The UE and the base station can use one or more directional beams to exchange communication.

[0036] For example, beamforming 182 can be used between base station 180 and UE 104 to compensate for path loss and short range in millimeter-wave (mmW) communications. Base station 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming.

[0037] Base station 180 may transmit beamformed signals to UE 104 in one or more transmission directions 182'. UE 104 may receive beamformed signals from base station 180 in one or more reception directions 182'. UE 104 may also transmit beamformed signals to base station 180 in one or more transmission directions. Base station 180 may receive beamformed signals from UE 104 in one or more reception directions.

[0038] The beam between UE 104 and base station 108 may become blocked, potentially leading to downlink and / or uplink beam degradation, resulting in beam failure. UE 104, or base stations 102 or 180 operating in full-duplex mode, may experience self-interference with the beam, causing beam failure in downlink communication. 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 of base station 180 may or may not be the same. The transmit and receive directions of UE 104 may or may not be the same.

[0039] The aspects presented herein improve the reliability of single-frequency network (SFN) transmissions by providing multiple TCI state / spatial relationships (e.g., QCL type D RS) for single-port RSs used for radio link monitoring (RLM) or beam fault detection (BFD). The aspects presented herein support single-layer transmission and / or reception using multiple beams (such as two beams).

[0040] For example, UE 104 may include an RLM / BFD RS component 198 configured to receive from base station 102 or 180 a configuration of multiple QCL type D relationships (e.g., two QCL type D relationships) for a single-port RS used for RLM or BFD. The RLM / BFD RS component 198 may be further configured to perform radio link or beam fault detection measurements on SFN communications based on the configuration of the multiple QCL type D relationships for a single-port RS used for RLM or BFD.

[0041] Base station 102 or 180 may include RLM / BFD RS configuration component 199, which is configured to transmit to UE 104 a configuration of multiple QCL type D relationships for single-port RS for RLM or BFD, and to transmit / receive SFN communication with the UE based on the multiple QCL type D relationships for single-port RLM or BFD RS.

[0042] While the following description may focus on 5G NR, the concepts described herein are applicable to other similar areas such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0043] Base station 102 may include macrocells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macrocells include base stations. Small cells include femtocells, picocells, and microcells.

[0044] 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: user data delivery, radio channel cryptography and cryptography decoding, 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), subscriber and equipment tracking, RAN Information Management (RIM), paging, location, and delivery of alarm messages. Base station 102 can communicate with each other directly or indirectly (e.g., via EPC 160 or core network 190) on third backhaul link 134 (e.g., X2 interface). First backhaul link 132, second backhaul link 184 and third backhaul link 134 can be wired or wireless.

[0045] Base station 102 can wirelessly communicate with UE 104. Each base station 102 can provide communication coverage for its respective geographical coverage area 110. Overlapping geographical coverage areas 110 may exist. For example, small cell 102' may have coverage areas 110' that overlap with the coverage areas 110 of one or more macro base stations 102. A network that includes both small cells and macro cells may be referred to as a heterogeneous network. The heterogeneous network may also include a Home Evolved B Node (eNB) (HeNB) that can provide services to a restricted group referred to as a Closed Subscriber Group (CSG). The communication link 120 between base station 102 and UE 104 may include uplink (UL) (also known as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also known as forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technologies, including spatial multiplexing, beamforming, and / or transmit diversity. These communication links may use one or more carriers. For each carrier allocated in a total of up to Yx MHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use a spectrum with a bandwidth of up to Y MHz (e.g., 5, 10, 15, 20, 100, 400 MHz, etc.). These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to 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).

[0046] Some UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 may use DL / UL WWAN spectrum. D2D communication link 158 may use one or more sidelink channels, such as the Physical Sidelink Broadcast Channel (PSBCH), Physical Sidelink Discovery Channel (PSDCH), Physical Sidelink Shared Channel (PSSCH), and Physical Sidelink Control Channel (PSCCH). D2D communication can be achieved through a wide variety of wireless D2D communication systems, such as, for example, WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0047] The wireless communication system may further include a Wi-Fi access point (AP) 150 communicating with a Wi-Fi station (STA) 152 via a communication link 154, for example, in an unlicensed spectrum such as 5 GHz. When communicating in unlicensed spectrum, the STA 152 / AP 150 may perform a clear channel assessment (CCA) before communication to determine whether the channel is available.

[0048] 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.) used by Wi-Fi AP 150. Small cell 102' employing NR in unlicensed spectrum can enhance access network coverage and / or increase access network capacity.

[0049] The electromagnetic spectrum is typically subdivided into various classes, bands, channels, etc., based on frequency / wavelength. In 5G NR, two initial operating bands have been designated as frequency ranges FR1 (410MHz–7.125GHz) and FR2 (24.25GHz–52.6GHz). The frequencies between FR1 and FR2 are generally referred to as the mid-band frequencies. Although a portion of FR1 is greater than 6GHz, FR1 is often (interchangeably) referred to as the “sub-6GHz” band in various documents and articles. Similar naming issues sometimes arise regarding FR2; although different from the Very High Frequency (EHF) band (30GHz–300GHz) designated as the “millimeter wave” band by the International Telecommunication Union (ITU), FR2 is often (interchangeably) referred to as the “millimeter wave” band in various documents and articles.

[0050] 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 designation FR3 (7.125 GHz – 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, thus effectively extending the features of FR1 and / or FR2 into the IF band. 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 designations FR4a or FR4-1 (52.6 GHz – 71 GHz), FR4 (52.6 GHz – 114.25 GHz), and FR5 (114.25 GHz – 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0051] In light of the foregoing, unless otherwise stated, it should be understood that, as used herein, the term "sub-6GHz" and the like can broadly refer to frequencies less than 6GHz, within FR1, or including intermediate frequency band frequencies. Furthermore, unless otherwise stated, it should be understood that, as used herein, the term "millimeter wave" and the like can broadly refer to frequencies that can include intermediate frequency band frequencies, within FR2, or within the EHF band.

[0052] Whether it is a small cell 102' or a large cell (e.g., a macro base station), base station 102 may include and / or be referred to as an eNB, gB node (gNB), or another type of base station. Some base stations 180 (such as gNBs) may operate in conventional sub-6 GHz spectrum, millimeter wave frequencies, and / or near-millimeter wave frequencies to communicate with UE 104. When a gNB (e.g., base station 180) operates in millimeter wave frequencies or near-millimeter wave frequencies, the gNB may be referred to as a millimeter wave base station. The millimeter wave base station (e.g., base station 180) may utilize beamforming 182 with UE 104 to compensate for 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.

[0053] 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 may 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 delivered through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. 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 functionality for MBMS user service provisioning and delivery. The BM-SC 170 can serve as an entry point for content provider MBMS transmissions, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and schedule MBMS transmissions. The MBMS gateway 168 can be used to distribute MBMS traffic to base station 102 within a Broadcast-Specific Service Single Frequency Network (MBSFN) area, and can be responsible for session management (start / stop) and collecting eMBMS-related billing information.

[0054] Core network 190 may include Access and Mobility Management Function (AMF) 192, other AMFs 193, Session Management Function (SMF) 194, and User Plane Function (UPF) 195. AMF 192 may communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that handles signaling between UE 104 and core network 190. Generally, AMF 192 provides QoS flow 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 (PSS) service, and / or other IP services.

[0055] Base stations may include and / or be referred to as gNB, B-node, eNB, access point, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmit / receive 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, laptop devices, personal digital assistants (PDAs), satellite radios, GPS devices, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet devices, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other similar functional devices. Some UE 104 may be referred to as IoT devices (e.g., parking timers, oil pumps, ovens, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or some other suitable term. In some scenarios, the term UE may also apply to one or more accompanying devices, such as in a device constellation arrangement. One or more of these devices may access the network jointly and / or individually.

[0056] Figure 2A This is a diagram 200 illustrating an example of the first subframe within the 5G NR frame structure. Figure 2B Figure 230 is an example illustrating the DL channel within a 5G NR subframe. Figure 2CThis is a diagram 250 illustrating an example of the second subframe within the 5G NR frame structure. Figure 2D Figure 280 illustrates an example of the UL channel within a 5G NR subframe. The 5G NR frame structure can be Frequency Division Duplex (FDD), where subframes within a specific set of subcarriers (carrier system bandwidth) are dedicated to either DL or UL; or it can be Time Division Duplex (TDD), where subframes within a specific set of subcarriers (carrier system bandwidth) are dedicated to both DL and UL. 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) and subframe 3 is configured with slot format 1 (all UL), where D is DL, U is UL, and F is for flexible use between DL and 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 to have 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 5G NR frame structures for TDD.

[0057] Figures 2A-2D The frame structure has been explained, 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 equally sized subframes (1 ms). Each subframe may include one or more time slots. Subframes may also include mini-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 CP or extended CP. For normal CP, each time slot may include 14 symbols, while for extended CP, each time slot may include 12 symbols. Symbols on the DL can be CP Orthogonal Frequency Division Multiplexing (OFDM) (CP-OFDM) symbols. Symbols on the UL can be CP-OFDM symbols (for high-throughput scenarios) or Discrete Fourier Transform (DFT) Extended 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 is based on the CP and parameter design. The parameter design defines the subcarrier spacing (SCS) and, in effect, the symbol length / duration, which is equal to 1 / SCS.

[0058] 0 15x normal 1 30 normal 2 60 Normal, expansion 3 120 normal 4 240 normal

[0059] For a normal CP (14 symbols / slot), different parameter designs μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For an extended CP, parameter design 2 allows 4 slots per subframe. Correspondingly, for the normal CP and parameter design μ, there are 14 symbols / slot and 2... μ One time slot / subframe. The subcarrier spacing can be equal to 2. μ *15kHz, where μ is the parameter design from 0 to 4. Thus, parameter design μ = 0 has a subcarrier spacing of 15kHz, and parameter design μ = 4 has a subcarrier spacing of 240kHz. Symbol length / duration is inversely correlated with subcarrier spacing. Figures 2A-2D An example is provided with a normal CP (Content Division Multiplexing) and parameter design of μ=2 with 14 symbols per time slot and 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 the frame set, there may be one or more different bandwidth portions (BWPs) that are frequency-division multiplexed (see [link to relevant documentation]). Figure 2B Each BWP can have specific parameter designs and CP (normal or extended).

[0060] A resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) extending 12 consecutive subcarriers (also known as a physical RB (PRB)). The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0061] As in Figure 2A As explained in the text, some REs carry reference (pilot) signals (RS) for the UE. RSs may include demodulation RS (DM-RS) for channel estimation at the UE (indicated as R for a particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS). RSs may also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0062] Figure 2BExamples of various DL channels within a subframe of a frame are explained. The Physical Downlink Control Channel (PDCCH) carries the DCI within one or more Control Channel Elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE comprising 6 RE Groups (REGs), each REG comprising 12 coherent REs in the OFDM symbols of the RB. A PDCCH within a BWP may 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 shared search space, a UE-specific search space) during PDCCH monitoring on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies spanning the channel bandwidth. The Primary Synchronization Signal (PSS) may be located within symbol 2 of a specific subframe of the frame. The PSS is used by the UE 104 to determine subframe / symbol timing and physical layer identity. The Secondary Synchronization Signal (SSS) may be located within symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the Physical Layer Cell Identity Group Number and radio frame timing. Based on the Physical Layer Identity and the Physical Layer Cell Identity 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 group 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 in the system bandwidth and the System Frame Number (SFN). 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.

[0063] As in Figure 2C As explained, some REs 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 or first two symbols of the PUSCH. The PUCCH DM-RS can be transmitted in different configurations depending on whether a short or long PUCCH is being transmitted and on the specific PUCCH format used. The UE can transmit a probe 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.

[0064] Figure 2DExamples of various UL channels within a subframe of the explanatory frame. The PUCCH may be located 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 clearance reports (PHR), and / or UCIs.

[0065] Figure 3 This is a block diagram showing the 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 functionality. 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 functionality 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 of UE measurement reports; PDCP layer functionality associated with header compression / decompression, security (cryptography, cryptographic decoding, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with upper-layer packet data unit (PDU) delivery, 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 functionality associated with mapping between logical channels and transport channels, multiplexing MAC SDUs onto transport blocks (TBs), demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel priority differentiation.

[0066] Transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functionality associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) decoding / 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 shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The decoded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently combined using an 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 estimates from channel estimator 374 can be used to determine coding and modulation schemes and for spatial processing. The channel estimates can be derived from reference signals and / or channel condition feedback transmitted by UE 350. Each spatial stream can then be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can modulate an RF carrier with the corresponding spatial stream for transmission.

[0067] At UE 350, each receiver 354RX receives signals via its respective antenna 352. Each receiver 354RX recovers the information modulated onto the RF carrier and provides this information to the receive (RX) processor 356. The TX processor 368 and RX processor 356 implement Layer 1 functionality 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 the reference signal, are recovered and demodulated by determining the signal constellation points most likely to be transmitted by base station 310. These soft decisions can be based on a channel estimate calculated by channel estimator 358. These soft decisions are then decoded and deinterleaved to recover the original data and control signals transmitted by base station 310 over the physical channel. This data and control signals are then provided to controller / processor 359, which implements layer 3 and layer 2 functionality.

[0068] 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 between transport and logical channels, packet reassembly, cipher decoding, header decompression, and control signal processing 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.

[0069] Similar to the functionality described in conjunction with DL transmissions performed by base station 310, controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) capture, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (cryptography, cryptographic decoding, integrity protection, integrity verification); RLC layer functionality associated with upper-layer PDU delivery, 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 functionality associated with mapping between logical channels and transport channels, multiplexing MAC SDUs onto TBs, demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel priority differentiation.

[0070] 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 an appropriate coding and modulation scheme and to facilitate spatial processing. The spatial stream generated by the TX processor 368 can be provided to different antennas 352 via separate transmitters 354TX. Each transmitter 354TX can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0071] UL transmissions are processed at base station 310 in a manner similar to that described in conjunction with the receiver function 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 that information to the RX processor 370.

[0072] 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 between transport and logical channels, packet reassembly, cipher decoding, header decompression, and control signal processing 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.

[0073] At least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform and Figure 1 The RLM / BFD RS component 198 combines various aspects.

[0074] 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 RLM / BFD RS configuration component 199 combines various aspects.

[0075] Wireless communication systems can be configured to share available system resources and provide various telecommunications services (e.g., telephone, video, data, messaging, broadcasting, etc.) based on multiple access technologies that support communication with multiple users. Full-duplex operation, where wireless devices exchange time-overlapping uplink and downlink communications, enables more efficient use of the wireless spectrum. Full-duplex operation can include simultaneous transmission and reception within the same frequency range. In some examples, the frequency range can be a millimeter-wave frequency range, such as frequency range 2 (FR2). In some examples, the frequency range can be a sub-6 GHz frequency range, such as frequency range 1 (FR1). Full-duplex capability can be supported at the base station and / or the UE. For example, the UE can transmit uplink communication from one antenna panel and receive downlink communication using another antenna panel. In some examples, full-duplex communication can be conditional on beam splitting or other conditions.

[0076] Full-duplex communication reduces latency. For example, full-duplex operation allows a UE to receive downlink signals in uplink time slots only, reducing downlink communication latency. Full-duplex communication improves spectral efficiency, such as per cell or per UE. Full-duplex communication enables more efficient use of radio resources.

[0077] Figures 4A-4CThe various modes of full-duplex communication are explained. Full-duplex communication supports the transmission and reception of information in a time-overlapping manner on the same frequency band. In this way, frequency efficiency can be improved compared to the spectral efficiency of half-duplex communication, which supports the transmission or reception of information in one direction at a time without overlap of uplink and downlink communication. Due to the simultaneous Tx / Rx nature of full-duplex communication, the UE or base station may experience self-interference caused by signal leakage from its local transmitter to its local receiver. In addition, the UE or base station may also experience interference from other devices, such as transmissions from a second UE or a second base station. Such interference (e.g., self-interference or interference caused by other devices) may affect information quality or even lead to information loss.

[0078] Figure 4A A first example of full-duplex communication 400 is shown, wherein a first base station 402a is in full-duplex communication with a first UE 404a and a second UE 406a. The first UE 404a and the second UE 406a can be configured for half-duplex or full-duplex communication. Figure 4A The description states that a first UE 404a performs downlink reception, and a second UE 406a performs uplink transmission. The second UE 406a can transmit a first uplink signal to a first base station 402a and other base stations (such as a second base station 408a adjacent to the second UE 406a). The first base station 402a transmits downlink signals to the first UE 404a concurrently (e.g., at least partially overlapping in time) with the uplink signals received from the second UE 406a. The base station 402a may experience self-interference at its receiving antenna, which is receiving uplink signals from the UE 406a, due to receiving at least a portion of the downlink signal transmitted to the UE 404a. The base station 402a may experience additional interference due to signals from the second base station 408a. Interference may also occur at the first UE 404a based on signals from the second base station 408a and uplink signals from the second UE 406a.

[0079] Figure 4BA second example of full-duplex communication 410 is shown, in which a first base station 402b and a first UE 404b are in full-duplex communication. In this example, UE 404b also operates in full-duplex mode. The first base station 402b and UE 404b receive and transmit communications that overlap in time and are in the same frequency band. The base station and the UE may each experience self-interference due to signals transmitted from the device leaking to a receiver at the same device (e.g., being received by that receiver). The first UE 404b may experience additional interference based on one or more signals transmitted from a second UE 406b and / or a second base station 408b adjacent to the first UE 404b.

[0080] Figure 4C A third example of full-duplex communication 420 is shown, in which a first UE 404c transmits and receives full-duplex communication with a first base station 402c and a second base station 408c. The first base station 402c and the second base station 408c can be used as multiple transmit and receive points (multiple TRPs) for communication with the UE 404c. The second base station 408c can also exchange communication with a second UE 406c. Figure 4C In this configuration, the first UE 404c can transmit uplink signals to the first base station 402c, which overlaps in time with the downlink signals received from the second base station 408c. The first UE 404c may experience self-interference as a result of receiving at least a portion of the first signal while receiving the second signal. For example, when the receiver of the UE is attempting to receive the signal from another base station 408c, the uplink signal from the UE to base station 402c may leak to the receiver of the UE (e.g., be received by the receiver). The first UE 404c may experience additional interference from the second UE 406c.

[0081] Full-duplex communication may operate within the same frequency band. Uplink and downlink communication may operate in different frequency subbands, the same frequency subband, or partially overlapping frequency subbands. Figure 5 A first example 500 and a second example 510 of in-band full-duplex (IBFD) resources, and a third example 520 of sub-band full-duplex resources, have been described. In IBDF, signals can be transmitted and received even with overlapping time and frequency assignments. As shown in the first example 500, the time and frequency allocation of transmit resource 502 may completely overlap with the time and frequency allocation of receive resource 504. In the second example 510, the time and frequency allocation of transmit resource 512 may partially overlap with the time and frequency allocation of receive resource 514.

[0082] In contrast to sub-band FDD, transmit and receive resources can overlap in time using different frequencies, as shown in the third example 520. In the third example 520, UL, transmit resource 522 is separated from receive resource 524 by guard band 526. The guard band can be a frequency resource provided between transmit resource 522 and receive resource 524, or a gap in frequency resources. Separating transmit and receive frequency resources using guard bands can help reduce self-interference. Transmit and receive resources that are adjacent to each other can be considered as guard bands with a width of 0. Since the output signal from the wireless device can extend beyond the transmit resource, the guard band can reduce the interference experienced by the wireless device. Sub-band FDD can also be referred to as "flexible duplex".

[0083] If full-duplex operation is used for the UE or equipment implementing UE functionality, then transmission resources 502, 512, and 522 may correspond to uplink resources, and receive resources 504, 514, and 524 may correspond to downlink resources. Alternatively, if full-duplex operation is used for the base station or equipment implementing base station functionality, then transmission resources 502, 512, and 522 may correspond to downlink resources, and receive resources 504, 514, and 524 may correspond to uplink resources.

[0084] Such as combination Figure 1 As described, UE 104 and base station 102 or 180 can use beamforming 182 to switch downlink and uplink communications using directional beams. After the beam used for communication is determined, conditions may change and may cause beam failure. For example, if the user moves to a location that blocks the beam to the base station, the UE may experience beam failure. For example, the UE may move in a different direction, or around a corner, or move to a location where a building or other structure blocks the beam. In other examples, the surrounding environment may change; for example, a vehicle may move to a location that blocks the beam between the UE and the base station. If the current beam used by the UE becomes unreliable, the UE may switch to a new beam. The UE may monitor beam quality and may perform radio link monitoring (RLM) to detect a degradation in beam quality.

[0085] For example, the UE can monitor the signal quality received via the receive beam. RLM measurements (e.g., downlink signals) can be performed by the UE's physical (PHY) layer based on one or more RLM reference signals. The PHY layer can then pass the RLM measurements to the Media Access Control (MAC) layer and the Radio Resource Control (RRC) layer. The RRC layer is responsible for detecting radio link failures (RLFs), and the MAC layer is responsible for detecting beam failures.

[0086] The UE can use a beam fault detection (BFD) procedure to identify beam quality problems and a beam fault recovery (BFR) procedure when a beam fault is detected. To monitor active link performance, the UE can perform measurements on at least one signal (e.g., a reference signal) used for beam fault detection. Measurements may include deriving a metric similar to the signal-to-interference-plus-noise ratio (SINR) of the signal, or the RSRP strength or block error rate (BLER) of a reference control channel selected by the base station and / or implicitly derived by the UE based on existing RRC configuration. The reference signal may include any of the following: CSI-RS, physical broadcast channel (PBCH), synchronization signal, or other reference signals used for time and / or frequency tracking. In some cases, the UE may determine configured metrics, such as the block error rate (BLER) of the reference signal. These measurements may indicate the UE's ability to transmit uplink data to the base station using the beam.

[0087] Thresholds can be defined when tracking radio link conditions. These thresholds may correspond to RSRP, SINR, BLER, etc., indicating the synchronization and / or out-of-synchronization status of the radio link. For example, a threshold (which may be referred to as Qout_LR) can be used by the PHY layer to trigger a failure indication to the MAC layer. For example, if the monitored RLM reference signal drops below the Qout_LR threshold, such as if all monitored RLM reference signals drop below Qout_LR, a beam fault instance can be identified. The MAC layer can combine the indication of a beam fault instance with a counting threshold and / or a timer to determine a beam fault. For example, the MAC layer can detect the number of beam fault instances within a time period based on a beam fault detection timer and compare it with a maximum count threshold for beam fault instances to determine that a beam fault has occurred.

[0088] A "out-of-synchronization" condition indicates a poor radio link condition, while a "synchronization" condition indicates an acceptable radio link condition and a high probability that the base station is receiving transmissions on the radio link. An out-of-synchronization condition can be declared when the block error rate of the radio link falls below a threshold over a specified time interval. A synchronization condition can be declared when the block error rate of the radio link is better than a threshold over a specified time interval. If a UE receives a threshold number of consecutive out-of-synchronization measurements over a period of time, the UE can declare a beam failure.

[0089] When a beam fault is detected, the UE can take appropriate action to restore the connection. For example, after multiple out-of-synchronization measurements, the UE can transmit a beam fault recovery signal (e.g., a beam fault recovery request (BFRQ)) to initiate the restoration of the connection with the base station. For example, the UE can receive an RRC configuration with parameters for a beam fault recovery procedure from the base station, which the UE can use to indicate to the base station that a beam fault has been detected. The base station and the UE can communicate via an active data / control beam for both DL and UL communication. The base station and / or the UE can use the beam fault recovery procedure to switch to a new beam direction.

[0090] A single-frequency network (SFN) can include multiple transmissions of the same signal on the same frequency channel, for example, through multiple transmitters transmitting the same signal on the same frequency channel. To improve the reliability of SFN-based communications, the base station can configure multiple TCI states for a single demodulation reference signal (DMRS) port. Each TCI state can correspond to a QCL type D reference signal. This configuration can support single-layer transmission and / or reception using two beams. For example, a control resource set identifier (CORESET) can correspond to a TCI state to simultaneously transmit the same control information / data to the UE via a single DMRS port to improve reliability.

[0091] The aspects presented in this article provide reference signals (RS) for SFN radio link monitoring (RLM) and / or beam fault detection (BFD) in both half-duplex and full-duplex modes. Figure 6 An example communication flow 600 between UE 602 and base station 604 is described. Example communication flow 600 includes configuration 603 for multiple QCL type D relationships (e.g., TCI state / spatial relationships) for a single-port RLM / BFD RS. UE 602 can then use this configuration to perform RLM / BFD in half-duplex or full-duplex mode. For example, as explained in 606, the UE can perform RLM / BFD based on downlink reception in two or more TCI states. As explained in 608, the UE can perform RLM / BFD for full-duplex communication based on multi-QCL CSI-RS / SRS port SFN communication.

[0092] For example, in half-duplex mode, the non-zero channel state information reference signal (NZP-CSI-RS) resource configuration in the RLM or BFD RS configuration may include multiple TCI states (e.g., two TCI states) and may be provided to the UE 602 from the base station 604 in configuration 603. Each TCI state may be indicated by reference to a specific reference signal. This configuration may support single-layer transmission for half-duplex or full-duplex communication. For example, two TCI states associated with one NZP-CSI-RS as an RLM or BFD RS may support half-duplex downlink transmission on two beams (e.g., based on these two TCI states). Two TCI states / spatial relationships can support full-duplex communication. For example, two TCI states associated with an NZP-CSI-RS as an RLM or BFD CMR RS can support full-duplex downlink transmission on two beams (e.g., based on both TCI states), and two spatial relationships associated with an SRS as an RLM or BFD IMR RS can support full-duplex uplink transmission on two beams (e.g., based on both spatial relationships).

[0093] Base station 604 can configure UE 602 using a radio link monitoring configuration (e.g., configuration 603), which UE 602 can use to perform measurements to detect beam and / or cell radio link failures. This configuration can be provided by the base station, for example, in Radio Resource Control (RRC) signaling. As part of this configuration, the base station can configure multiple RLM RSs. RLM RSs can be indicated by referencing SSB indices and / or CSI-RS indices (e.g., NZP-CSI-RS resource IDs). Base station 604 can transmit CSI-RS 605 associated with multiple TCI states configured for a single-port RLM RS at UE 602, and SSB 607 associated with multiple TCI states configured for a single-port RLM RS at UE 602. Base station 604 can configure the RLM RS for purposes such as beam failure detection, radio link failure, etc. Thus, UE 602 can receive multiple QCL type D RSs and apply them to the radio link monitoring RS associated with a single port. For example, in 606, the UE can perform RLM / BFD based on a multi-QCL type D RS associated with a single-port RLM / BFD RS.

[0094] NZP-CSI-RS resources can be used to configure NZP-CSI-RS transmitted in a cell that includes an Information Element (IE). For example, in 603, UE 602 can be configured to perform RLM / BFD measurements on NZP-CSI-RS resources. Release and add configurations can be provided to change the configuration between periodic, semi-persistent, or aperiodic configurations of the NZP-CSI-RS resources. In some examples, changing the configuration between periodic / semi-persistent / aperiodic NZP-CSI-RS resources may not be supported without releasing and adding NZP-CSI-RS resource configurations. NZP-CSI-RS resources can be configured based on multiple TCI states (e.g., QCL information about CSI-RS based on a first TCI state ID and QCL information about the same CSI-RS based on a second TCI state ID). Two TCI states can be associated with the same port resource and the same CSI-RS signal, which is transmitted simultaneously using different beams (e.g., the beams associated with the two TCI states). In some examples, UE 602 can use two TCI states for NZP-CSI-RS to perform half-duplex reception. For example, in 606, UE 602 can perform RLM / BFD measurements based on half-duplex reception.

[0095] In full-duplex mode, UE 602 can perform SINR-based detection to measure self-interference (e.g., for use in Self-Interference Measurement (SIM)) based on Interference Measurement Resources (IMR). At 603, UE 602 can receive configuration of the IMR and / or Channel Measurement Resources (CMR) from base station 604. In full-duplex mode, if a SINR threshold is reached, UE 602 can be triggered to provide a beam fault instance indication to the MAC layer. The UE can provide the MAC layer with information about the maximum count of beam fault instances and / or the beam fault detection timer, for example, along with the beam fault instance indication. UE 602 can count each beam fault instance, and, for example, at 611, the maximum count of beam fault instances can provide a threshold number of beam fault instances that indicate the beam fault detection reported by UE 602 to base station 604. For example, the beam fault instances can be counted over a period of time (e.g., based on a beam fault detection timer). The maximum beam failure instance count and / or beam failure detection timer can be parameters configured by base station 604 for UE 602. An uplink reference signal (e.g., SRS) can be added to the RLM configuration for full-duplex use. The UE can transmit uplink signals based on the configured SRS at 609, and the interference to downlink reception of UE 602 caused by SRS 609 can be measured. For full-duplex communication, at 603, two types of reference signals can be configured for UE 602, for example, a first reference signal for CMR and a second reference signal for IMR. Base station 604 can configure NZP-CSI-RS resources for CMR and SRS resources for IMR to include two TCI states per NZP-CSI-RS and two spatial relationships per SRS. In this example, the RLM RS can include a CMR configured with reference to an SSB index or a CSI-RS index, and may also include an IMR configured with reference to an SRS index.

[0096] In some examples, SRS resources for IMR for UE 602 can be configured for a single SRS port with multiple spatial relationships. For example, base station 604 can use first and second SRS spatial relationship information regarding BFD / RLM IMR RS to configure UE 602 for full-duplex communication. The SRS spatial relationship information can be based on a relationship with the SSB index, CSI-RS index, or QCL type type D of the SRS.

[0097] UE 602 can use the TCI state / spatial relationship configured for a single-port RS for RLM / BFD to perform radio link monitoring and / or beam fault detection. RLM / BFD can be performed for half-duplex communication or for full-duplex communication.

[0098] For example, UE 602 may receive half-duplex communication based on multiple TCI states associated with multiple QCL type D relationships configured for a single-port RS for RLM / BFD based on SSB or NZP-CSI-RS. In other examples, the UE may receive full-duplex communication based on multiple TCI states associated with multiple QCL type D relationships configured for a single-port RS for RLM / BFD based on SRS or NZP-CSI-RS, and transmit full-duplex communication based on multiple spatial relationships associated with multiple QCL type D relationships configured for a single-port RS for RLM or BFD based on SRS.

[0099] UE 602 may transmit report 611 based on RLM measurements and / or BFD measurements. Base station 604 may provide report 611 to UE 602 based on RLM or BFD configuration.

[0100] Figure 7A This is a flowchart 700 of a wireless communication method. This method can be performed by a UE, components of the UE, or a device implementing UE functionality (e.g., UE 104, 350, 402a-c, 602; equipment 802). For full-duplex communication, this method can help improve the reliability of SFN communication via RLM and BFD based on multiple QCL type D reference signals on a single port used for RLM / BFD.

[0101] In 702, the UE receives from the base station a configuration for multiple QCL type D relationships for a single-port RS used for RLM or BFD. This reception can be, for example, by... Figure 8 The configuration component 840 in equipment 802 is used to execute. Figure 6An example of UE 602 receiving configuration from base station 604 is explained. In some examples, the configuration may be for two QCL type D relationships for a single-port RS used for RLM or BFD. The multiple QCL type D relationships may include multiple TCI states for a single-port RS used for RLM or BFD. The multiple QCL type D relationships may be for an RLM RS or BFD RS based on multiple SSB indices. The multiple QCL type D relationships may be for an RLM or BFD RS based on multiple CSI-RS indices. The multiple QCL type D relationships may be for an NZP-CSI-RS resource based on multiple TCI states. For example, in 704, the UE may monitor the NZP-CSI-RS based on the multiple TCI states. For full-duplex communication, the multiple QCL type relationships may be for an RLM reference signal, which includes an SRS and at least one of an SI-RS or SSB. The SRS may be configured as an IMR, and at least one of the CSI-RS or SSB may be configured as a CMR. These multiple QCL type D relationships can be used for SRS resources based on multiple spatial relationships. Each of these spatial relationships can be associated with an SSB index, a CSI-RS index, or an SRS index.

[0102] In 704, the UE transmits or receives SFN communication from the base station based on multiple QCL type D relationships for the single-port RLM or BFD RS. This transmission / reception can, for example, be performed by... Figure 8 The SFN component 842 in equipment 802 is used to perform this. Figure 6 An example aspect of UE 602 receiving / transmitting based on configuration 603 from base station 604 is explained.

[0103] Figure 7BThe description explains that, in some aspects, transmitting / receiving SFN communication with the UE may include: receiving half-duplex communication based on multiple TCI states associated with the multiple QCL Type D relationships, which are configured for the single-port RLM or BFD RS based on SSB or NZP-CSI-RS, for example, as explained in 708. Transmitting / receiving SFN communication with the UE may include: receiving full-duplex communication based on multiple TCI states associated with the multiple QCL Type D relationships, which are configured for the single-port RLM or BFD RS based on SSB or NZP-CSI-RS, for example, as explained in 710; and transmitting full-duplex communication based on multiple spatial relationships associated with additional multiple QCL Type D relationships, which are configured for the single-port RLM or BFD RS based on SRS, for example, as explained in 712. Multiple QCL type D relationships for a single-port SRS are different QCL type D relationships for a single-port CSI-RS or SSB. Receiving SFN communication with the UE may further include receiving control information based on a single CORESET ID associated with the multiple TCI states.

[0104] At 706, the UE performs radio link or beam fault detection measurements on the SFN communication based on the configuration of multiple QCL type D relationships for a single-port RLM or BFD RS. The RLM can be performed, for example, by the RLM component 844 of device 802. The BFD can be performed, for example, by the BFD component 846 of device 802. For example, for self-interference measurements, the multiple QCL type D relationships configured at 702 can be for SRS resources based on multiple spatial relationships. For example, at 706, the UE can perform BFD based on measurements of reference signals based on these multiple spatial relationships. The beam fault detection can include full-duplex beam fault detection based on these multiple spatial relationships and multiple TCI states.

[0105] Figure 8Figure 800 illustrates an example of the hardware implementation of device 802. Device 802 may be a UE, a component of a UE, or an implementation of UE functionality. In some aspects, device 802 includes a cellular baseband processor 804 (also referred to as a modem) coupled to a cellular RF transceiver 822 and one or more Subscriber Identity Module (SIM) cards 820, an application processor 806 coupled to a Secure Digital Card (SD) card 808 and a screen 810, a Bluetooth module 812, a Wireless Local Area Network (WLAN) module 814, a Global Positioning System (GPS) module 816, and a power supply 818. The cellular baseband processor 804 communicates with UE 104 and / or BS 102 / 180 via the cellular RF transceiver 822. The cellular baseband processor 804 may include computer-readable media / memory. The computer-readable media / memory may be non-transient. The cellular baseband processor 804 is responsible for general processing, including the execution of software stored on the computer-readable media / memory. When executed by the cellular baseband processor 804, the software causes the cellular baseband processor 804 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the cellular baseband processor 804 during software execution. The cellular baseband processor 804 further includes a receiving component 830, a communication manager 832, and a transmission component 834. The communication manager 832 includes one or more of the described components. The components within the communication manager 832 can be stored in a computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 804. The cellular baseband processor 804 can be a component of the UE 350 and may include a memory 360 and / or at least one of the following: a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the device 802 may be a modem chip and include only the cellular baseband processor 804, and in another configuration, the device 802 may be the entire UE (e.g., see...). Figure 3 (350) and includes an additional module equipped with 802.

[0106] Communication manager 832 includes configuration component 840, which is configured to receive configuration from base station for multiple QCL type D relationships for single-port RLM or BFDRS, for example, as combined with Figure 7A As described in 702. The communication manager 832 further includes an SFN component 842 that transmits or receives SFN communication from the base station based on multiple QCL type D relationships for the single-port RLM or BFD RS, for example, as combined with... Figure 7AAs described in 704. The communication manager 832 may further include an RLM component 844 that performs RLM measurements on the SFN communication based on the configuration of multiple QCL type D relationships for a single-port RLM or BFD RS, for example, as described in conjunction with 706. The communication manager 832 may further include a BFD component 846 that performs BFD measurements on the SFN communication based on the configuration of multiple QCL type D relationships for a single-port RLM or BFD RS, for example, as described in conjunction with 706.

[0107] The equipment may include execution Figure 7A , 7B The various blocks of the algorithm in the flowchart, and / or by Figure 6 Additional components that perform various aspects of the UE's operations. Thus, Figure 7A , 7B Each box in the flowchart and / or by Figure 6 The various aspects performed by the UE can be executed by components, and the equipment can include one or more of these components. These components can be one or more hardware components specifically configured to perform the described process / algorithm, implemented by a processor configured to perform the described process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0108] As shown, equipment 802 may include various components configured for various functions. In one configuration, equipment 802 (particularly cellular baseband processor 804) includes means for receiving from a base station a configuration of multiple QCL type D relationships for a single-port RLM or BFD RS. Equipment 802 includes means for transmitting or receiving SFN communications from the base station based on the multiple QCL type D relationships for the single-port RLM or BFD RS. Equipment 802 includes means for performing radio link or beam fault detection measurements on the SFN communications based on the configuration of the multiple QCL type D relationships for the single-port RLM or BFD RS. The means may be one or more of the components in equipment 802 configured to perform the functions described by the means. As described above, equipment 802 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Thus, in one configuration, the means may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions described by the means.

[0109] Figure 9AThis is a flowchart 900 of a wireless communication method. This method can be performed by a base station (e.g., base stations 102, 180, 310, 410a-c, 604; equipment 1002). For full-duplex communication, this method can help improve the reliability of SFN communication via RLM and BFD based on multiple QCL type D reference signals from a single port used for RLM / BFD.

[0110] In step 902, the base station transmits to the UE the configuration of multiple QCL type D relationships for a single-port RLM or BFD RS. This transmission can be, for example, by... Figure 10 The configuration component 1040 in equipment 1002 is used to execute. Figure 6 An example of base station 604 providing configuration 603 to UE 602 is explained. In some examples, this configuration may be for two QCL type D relationships for a single-port RLM or BFD RS. The multiple QCL type D relationships may include multiple TCI states for a single port for the RLM or BFD RS. The multiple QCL type D relationships may be for RLM or BFD RS based on multiple SSB indices. The multiple QCL type D relationships may be for RLM or BFD RS based on multiple CSI-RS indices. The multiple QCL type D relationships may be for NZP-CSI-RS resources based on multiple TCI states. For example, in 904, the base station may transmit the NZP-CSI-RS based on the multiple TCI states. For full-duplex communication, the multiple QCL type relationships may be for an RLM reference signal, which includes an SRS and at least one of an SI-RS or SSB. The SRS may be configured as an IMR, and at least one of the CSI-RS or SSB may be configured as a CMR. These multiple QCL type D relationships can be used for SRS resources based on multiple spatial relationships. Each of these spatial relationships can be associated with an SSB index, a CSI-RS index, or an SRS index.

[0111] In 904, the base station communicates with the UE via the transmit / receive SFN based on multiple QCL type D relationships for the single-port RLM or BFD RS. This transmit / receive can, for example, be provided by... Figure 10 The SFN component 1042 in equipment 1002 is used to perform this. Figure 6 An example aspect of the base station receiving / transmitting based on configuration 603 for UE 602 is explained.

[0112] Figure 9BThe description explains that, in some aspects, transmitting / receiving SFN communication with the UE may include: transmitting half-duplex communication based on multiple TCI states associated with multiple QCL Type D relationships, which are configured for the single-port RLM or BFD RS based on SSB or NZP-CSI-RS, as explained in 906. Transmitting / receiving SFN communication with the UE may include: transmitting full-duplex communication based on multiple TCI states associated with multiple QCL Type D relationships, which are configured for the single-port RLM or BFD RS based on SSB or NZP-CSI-RS, for example, as explained in 908; and receiving full-duplex communication based on multiple spatial relationships associated with multiple QCL Type D relationships, which are configured for the single-port RLM or BFD RS based on SRS, for example, as explained in 910. Transmitting the SFN communication to the UE may further include transmitting control information to the UE based on a single CORESET ID associated with the plurality of TCI states.

[0113] Figure 10 Figure 1000 illustrates an example of the hardware implementation of device 1002. Device 1002 may be a base station, a component of a base station, or a device that implements base station functionality. In some aspects, device 1002 may include a baseband unit 1004. Baseband unit 1004 may communicate with UE 104 via cellular RF transceiver 1022. Baseband unit 1004 may include computer-readable medium / memory. Baseband unit 1004 is responsible for general processing, including the execution of software stored on computer-readable medium / memory. When executed by baseband unit 1004, the software causes baseband unit 1004 to perform the various functions described above. Computer-readable medium / memory may also be used to store data manipulated by baseband unit 1004 during software execution. Baseband unit 1004 further includes a receiving component 1030, a communication manager 1032, and a transmitting component 1034. Communication manager 1032 includes one or more of the illustrated components. Components within the communication manager 1032 may be stored in a computer-readable medium / memory and / or configured as hardware within the baseband unit 1004. The baseband unit 1004 may be a component of the base station 310 and may include a memory 376 and / or at least one of the following: a TX processor 316, an RX processor 370, and a controller / processor 375.

[0114] Communication manager 1032 includes configuration component 1040, which transmits to the UE the configuration of multiple QCL type D relationships for a single-port RLM or BFD RS, for example, as combined with Figure 9AAs described in 902. The communication manager 1032 includes an SFN component 1042 configured to transmit or receive SFN communication with the UE based on multiple QCL type D relationships for the single-port RLM or BFD RS, for example, as combined with... Figure 9A As described in 904.

[0115] The equipment may include execution Figure 9A b. The various blocks of the algorithm in the flowchart of 9B, and / or by Figure 6 The base station in the system consists of various additional components that perform different functions. Thus, Figure 9A , 9B Each box in the flowchart and / or by Figure 6 The various aspects performed by the base station can be performed by components, and the equipment can include one or more of these components. These components can be one or more hardware components specifically configured to perform the described process / algorithm, implemented by a processor configured to perform the described process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0116] As shown, equipment 1002 may include various components configured for various functions. In one configuration, equipment 1002 (and particularly baseband unit 1004) includes means for transmitting to the UE a configuration of multiple QCL type D relationships for a single-port RLM or BFD RS. Equipment 1002 includes means for transmitting or receiving SFN communication with the UE based on the multiple QCL type D relationships for the single-port RLM or BFD RS. The means may be one or more of the components in equipment 1002 configured to perform the functions described by the means. As described above, equipment 1002 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Thus, in one configuration, the means may be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions described by the means.

[0117] It should be understood that the specific order or hierarchy of the boxes in the disclosed process / flowcharts is an explanation of exemplary methods. It should be understood that the specific order or hierarchy of the boxes in these process / flowcharts can be rearranged based on design preferences. Furthermore, some boxes may be combined or omitted. The appended method claims present the elements of the various boxes in an exemplary order and are not intended to be limited to the specific order or hierarchy presented.

[0118] The preceding description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will readily be understood by those skilled in the art, and the universal principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are to be granted the full scope consistent with the language of the claims, wherein references to the singular form of an element, unless specifically stated, are not intended to mean “one and only one,” but rather “one or more.” Terms such as “if,” “when,” and “at the time of” should be interpreted as meaning “under this condition,” 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 an action, but only imply that an action will occur when a condition is met, without requiring a specific or immediate temporal constraint for the action to occur. The term “exemplary” is used herein to mean “example, instance, or illustration.” Any aspect described herein as “exemplary” is not necessarily to be construed as superior to or overriding other aspects. Unless specifically stated otherwise, the term “some / a” 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 multiple A, multiple B, or multiple 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 include one or more members of A, B, or C. Elements of all aspects described throughout this disclosure that are structural and functional equivalents known now or hereafter to those skilled in the art are expressly incorporated herein by reference and are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended as a donation to the public, whether or not such disclosure is expressly stated in the claims. The terms “module,” “mechanism,” “element,” and “device” are not necessarily substitutes for the term “apparatus.” Thus, no claim element should be interpreted as an apparatus plus a function unless the element is explicitly stated using the phrase “apparatus for…”.

[0119] The following aspects are illustrative only and may be combined with other aspects or teachings described herein without limitation.

[0120] Aspect 1 is a method for performing wireless communication at a UE, comprising: receiving from a base station a configuration of multiple QCL type D relationships for a single-port RS for RLM or BFD; transmitting or receiving SFN communication from the base station based on the multiple QCL type D relationships for the single-port RS for RLM or BFD; and performing radio link or beam fault detection measurements on the SFN communication based on the configuration of the multiple QCL type D relationships for the single-port RS for RLM or BFD.

[0121] In aspect 2, the method of aspect 1 further includes: transmitting or receiving the SFN communication from the base station includes: receiving half-duplex communication based on a plurality of TCI states associated with the plurality of QCL type D relationships, the plurality of QCL type D relationships being configured for a single-port RS for RLM or BFD based on SSB or NZP-CSI-RS.

[0122] In aspect 3, the method of aspect 1 further includes: transmitting or receiving the SFN communication from the base station includes: receiving full-duplex communication based on multiple TCI states associated with the multiple QCL type D relationships, the multiple QCL type D relationships being configured for a single-port RS for RLM or BFD based on SSB or NZP-CSI-RS; and transmitting the full-duplex communication based on multiple spatial relationships associated with the multiple QCL type D relationships, the multiple QCL type D relationships being configured for a single-port RS for RLM or BFD based on SRS.

[0123] In aspect 4, the method of any of aspects 1-3 further includes: the plurality of QCL type D relationships include: a plurality of TCI states for a single port of a single port RS for RLM or BFD.

[0124] In aspect 5, the method of aspect 4 further includes: receiving communication from the base station includes: monitoring control information from the base station based on a single CORESET ID associated with the plurality of TCI states.

[0125] In aspect 6, the method of any of aspects 1-5 further includes: the plurality of QCL type D relations are for a single-port RS for RLM or BFD based on a plurality of SSB indexes.

[0126] In aspect 7, the method of any of aspects 1-5 further includes: the plurality of QCL type D relations are for a single-port RS for RLM or BFD based on a plurality of CSI-RS indexes.

[0127] In aspect 8, the method of any of aspects 1-5 further includes: the plurality of QCL type D relationships are for non-zero channel state information reference signal (NZP-CSI-RS) resources based on a plurality of TCI states.

[0128] In aspect 9, the method of aspect 8 further includes: the UE monitoring the NZP-CSI-RS based on the plurality of TCI states.

[0129] In aspect 10, the method of aspect 1 further includes: for full-duplex communication, the plurality of QCL type D relationships are for a single-port RS for RLM or BFD, the single-port RS including SRS and at least one of CSI-RS or SSB.

[0130] In aspect 11, the method of aspect 10 further includes: the SRS being configured as IMR, and at least one of the CSI-RS or the SSB being configured as CMR.

[0131] In aspect 12, the method, as in aspect 10 or 11, further includes: multiple QCL type D relations are for SRS resources based on multiple spatial relations.

[0132] In aspect 13, the method of aspect 12 further includes performing the BFD based on measurements of a reference signal based on the plurality of spatial relationships.

[0133] In aspect 14, the method of aspect 13 further includes: the beam fault detection includes full-duplex beam fault detection based on the plurality of spatial relationships.

[0134] In aspect 15, the method of any of aspects 12-14 further includes: each of the plurality of spatial relations being associated with an SSB index, a CSI-RS index, or an SRS index.

[0135] In aspect 16, the method of any of aspects 1-15 further includes: the configuration is for a single port of a single-port RS for RLM or BFD with two QCL type D relationships.

[0136] Aspect 17 is an apparatus for wireless communication at a UE, including means for performing the method of any of aspects 1-16.

[0137] In aspect 18, the device as described in aspect 17 further includes: at least one antenna and a transceiver coupled to the at least one antenna.

[0138] Aspect 19 is an apparatus for wireless communication at a UE, comprising: a memory; and at least one processor coupled to the memory, the memory and the at least one processor being configured to perform a method as described in any of Aspects 1-16.

[0139] In aspect 20, the apparatus of aspect 19 further includes: at least one antenna and a transceiver coupled to the at least one antenna and at least one processor.

[0140] Aspect 21 is a non-transient computer-readable medium storing computer-executable code for wireless communication at a UE, which, when executed by a processor, causes the processor to perform a method as described in any of Aspects 1-16.

[0141] Aspect 22 is a method for wireless communication at a base station, comprising: transmitting to a UE a configuration of multiple QCL type D relationships for a single-port RS for RLM or BFD; and transmitting or receiving SFN communication with the UE based on the multiple QCL type D relationships for the single-port RS for RLM or BFD.

[0142] In aspect 23, the method of aspect 22 further includes: transmitting or receiving SFN communication with the UE includes: transmitting half-duplex communication based on multiple TCI states associated with the multiple QCL type D relationships, the multiple QCL type D relationships being configured for a single-port RS for RLM or BFD based on SSB or NZP-CSI-RS.

[0143] In aspect 24, the method of aspect 22 further includes: transmitting or receiving the SFN communication with the UE includes: transmitting full-duplex communication based on multiple TCI states associated with the multiple QCL type D relationships, the multiple QCL type D relationships being configured for a single-port RS for RLM or BFD based on SSB or NZP-CSI-RS; and receiving the full-duplex communication based on multiple spatial relationships associated with the multiple QCL type D relationships, the multiple QCL type D relationships being configured for a single-port RS for RLM or BFD based on SRS.

[0144] In aspect 25, the method of aspect 22 further includes: the plurality of QCL type D relationships include: a plurality of TCI states for a single port of a single-port RS for RLM or BFD, and wherein transmitting the SFN communication to the UE includes: transmitting control information to the UE based on a single CORESET ID associated with the plurality of TCI states.

[0145] In aspect 26, the method of any of aspects 22-25 further includes: the plurality of QCL type D relations are for RS for RLM or BFD based on a plurality of SSB indexes.

[0146] In aspect 27, the method of any of aspects 22-25 further includes: the plurality of QCL type D relations are for RSs used for RLM or BFD based on a plurality of CSI-RS indexes.

[0147] In aspect 28, the method of any of aspects 22-25 further includes: the plurality of QCL type D relationships are for NZP-CSI-RS resources based on a plurality of TCI states.

[0148] In aspect 29, the method of aspect 28 further includes: the base station transmitting the NZP-CSI-RS based on the plurality of TCI states.

[0149] In aspect 30, the method of any of aspects 22-25 further includes: for full-duplex communication, the plurality of QCL type relationships are for an RLM reference signal, the RLM reference signal including at least one of SRS and SI-RS or SSB.

[0150] In aspect 31, the method of aspect 30 further includes: the SRS being configured as IMR, and at least one of the CSI-RS or the SSB being configured as CMR.

[0151] In aspect 32, the method of any of aspect 30 further includes: for full-duplex communication, the plurality of QCL type relationships are for an RLM reference signal, the RLM reference signal including at least one of SRS and SI-RS or SSB, and wherein the plurality of QCL type D relationships are for an SRS resource based on a plurality of spatial relationships.

[0152] In aspect 33, the method of aspect 32 further includes: each of the plurality of spatial relations is associated with an SSB index, a CSI-RS index, or an SRS index.

[0153] In aspect 34, the method of any of aspects 22-33 further includes: the configuration is for two QCL type D relationships for a single-port RS used for RLM or BFD.

[0154] Aspect 35 is an apparatus for wireless communication at a base station, including means for performing the method of any of aspects 22-34.

[0155] In aspect 36, the apparatus of aspect 35 further includes: at least one antenna and a transceiver coupled to the at least one antenna.

[0156] Aspect 37 is an apparatus for wireless communication at a base station, comprising: a memory; and at least one processor coupled to the memory, the memory and the at least one processor being configured to perform a method as described in any of aspects 22-34.

[0157] In aspect 38, the apparatus of aspect 37 further includes: at least one antenna and a transceiver coupled to the at least one antenna and at least one processor.

[0158] Aspect 39 is a non-transient computer-readable medium storing computer-executable code for wireless communication at a base station, which, when executed by a processor, causes the processor to perform a method as described in any of Aspects 22-34.

Claims

1. An apparatus for performing wireless communication at a user equipment (UE), comprising: Memory; as well as At least one processor coupled to the memory, the at least one processor being configured such that the UE: Receive configuration from network nodes for multiple quasi-co-located QCL type D relationships for single-port reference signals RS used for Radio Link Management (RLM) or Beam Fault Detection (BFD); Transmitting or receiving single-frequency network (SFN) communication with the network node based on the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD includes: Half-duplex communication is received based on multiple Transmission Configuration Indicator (TCI) states associated with the multiple QCL Type D relationships, wherein the multiple QCL Type D relationships are configured for the single-port RS for the RLM or the BFD based on the Synchronization Signal Block (SSB) or Non-Zero Power Channel State Information Reference (NZP-CSI-RS). Full-duplex communication is received based on the multiple TCI states associated with the multiple QCL type D relationships, wherein the multiple QCL type D relationships are based on the SSB or the NZP-CSI-RS configured for the single-port RS used by the RLM or the BFD. The full-duplex communication is transmitted based on multiple spatial relationships associated with the multiple QCL type D relationships, wherein the multiple QCL type D relationships are based on the probe reference signal SRS configured for the single-port RS used for the RLM or the BFD; and Radio link or beam fault detection measurements are performed on the SFN communication based on the configuration of the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD.

2. The apparatus of claim 1, wherein the plurality of QCL type D relationships include the plurality of TCI states for the single-port RS used for the RLM or the BFD.

3. The apparatus of claim 2, wherein, in order to receive communication from the network node, the at least one processor is configured to monitor control information from the network node based on a single Control Resource Set Identifier (CORESET ID) associated with the plurality of TCI states.

4. The apparatus of claim 1, wherein the plurality of QCL type D relationships are for the single-port RS based on a plurality of SSB indices for the RLM or the BFD.

5. The apparatus of claim 1, wherein the plurality of QCL type D relationships are for the single-port RS for the RLM or the BFD based on a plurality of Channel State Information Reference Signals (CSI-RS) indexes.

6. The apparatus of claim 1, wherein the plurality of QCL type D relationships are for NZP-CSI-RS resources based on the plurality of TCI states.

7. The apparatus of claim 6, wherein the at least one processor is further configured to: The NZP-CSI-RS is monitored based on the multiple TCI states.

8. The apparatus of claim 1, wherein the configuration is for two QCL type D relationships of the single-port RS for the RLM or the BFD.

9. The apparatus of claim 1, further comprising: At least one antenna; as well as A transceiver coupled to the at least one antenna and the at least one processor.

10. An apparatus for performing wireless communication at a user equipment (UE), comprising: Memory; as well as At least one processor coupled to the memory, the at least one processor being configured such that the UE: Receive configuration from network nodes for multiple quasi-co-location QCL type D relationships for a single-port reference signal RS used for Radio Link Management (RLM) or Beam Fault Detection (BFD), wherein for full-duplex communication, the multiple QCL type D relationships are for the single-port RS used for the RLM or the BFD, the single-port RS including a probe reference signal SRS and at least one of a Channel State Information Reference Signal (CSI-RS) or a Synchronization Signal Block (SSB); Based on the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD, transmit or receive single-frequency network (SFN) communication with the network node; as well as Radio link or beam fault detection measurements are performed on the SFN communication based on the configuration of the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD.

11. The apparatus of claim 10, wherein the SRS is configured as an Interference Measurement Resource (IMR), and at least one of the CSI-RS or the SSB is configured as a Channel Measurement Resource (CMR).

12. The apparatus of claim 10, wherein the plurality of QCL type D relationships are for SRS resources based on a plurality of spatial relationships.

13. The apparatus of claim 12, wherein the at least one processor is further configured to: The BFD is performed based on measurements of reference signals based on the plurality of spatial relationships.

14. The apparatus of claim 13, wherein the BFD includes full-duplex beam fault detection based on the plurality of spatial relationships.

15. The apparatus of claim 12, wherein each of the plurality of spatial relationships is associated with an SSB index, a CSI-RS index, or an SRS index.

16. A method for conducting wireless communication at a user equipment (UE), comprising: Receive configuration from network nodes for multiple quasi-co-located QCL type D relationships for single-port reference signals RS used for Radio Link Management (RLM) or Beam Fault Detection (BFD); Transmitting or receiving single-frequency network (SFN) communication with the network node based on the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD includes: Half-duplex communication is received based on multiple Transmission Configuration Indicator (TCI) states associated with the multiple QCL Type D relationships, wherein the multiple QCL Type D relationships are configured for the single-port RS for the RLM or the BFD based on the Synchronization Signal Block (SSB) or Non-Zero Power Channel State Information Reference (NZP-CSI-RS). Full-duplex communication is received based on the multiple TCI states associated with the multiple QCL type D relationships, wherein the multiple QCL type D relationships are based on the SSB or the NZP-CSI-RS configured for the single-port RS used by the RLM or the BFD. The full-duplex communication is transmitted based on multiple spatial relationships associated with the multiple QCL type D relationships, wherein the multiple QCL type D relationships are based on the probe reference signal SRS configured for the single-port RS used for the RLM or the BFD; and Radio link or beam fault detection measurements are performed on the SFN communication based on the configuration of the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD.

17. An apparatus for wireless communication at a network node, comprising: Memory; as well as At least one processor coupled to the memory, the at least one processor being configured such that the network node: Transmit to the user equipment (UE) the configuration of multiple quasi-co-located QCL type D relationships for the single-port reference signal RS used for radio link management RLM or beam fault detection BFD; as well as Based on the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD, to transmit or receive single-frequency network (SFN) communication with the UE, including: Half-duplex communication is transmitted based on multiple Transmission Configuration Indicator (TCI) states associated with the multiple QCL Type D relationships, wherein the multiple QCL Type D relationships are based on the Synchronization Signal Block (SSB) or Non-Zero Power Channel State Information Reference Signal (NZP-CSI-RS) configured for the single-port RS of the RLM or the BFD, or Full-duplex communication is transmitted based on the multiple TCI states associated with the multiple QCL type D relationships, which are based on the SSB or the NZP-CSI-RS configuration for the single-port RS used by the RLM or the BFD. The full-duplex communication is received based on multiple spatial relationships associated with the multiple QCL type D relationships, the multiple QCL type D relationships being configured based on the probe reference signal SRS for the single-port RS used in the RLM or the BFD.

18. The apparatus of claim 17, wherein the plurality of QCL type D relationships include the plurality of TCI states for the single-port RS for the RLM or the BFD, and wherein, in order to transmit the SFN communication to the UE, the at least one processor is configured to transmit control information to the UE based on a single Control Resource Set Identifier (CORESET ID) associated with the plurality of TCI states.

19. The apparatus of claim 17, wherein the plurality of QCL type D relationships are for RSs used for the RLM or the BFD based on a plurality of synchronization signal block SSB indices.

20. The apparatus of claim 17, wherein the plurality of QCL type D relationships are for RSs used for the RLM or the BFD based on a plurality of Channel State Information Reference Signals (CSI-RS) indices.

21. The apparatus of claim 17, wherein the plurality of QCL type D relationships are for NZP-CSI-RS resources based on the plurality of TCI states, and wherein the at least one processor is configured to transmit the NZP-CSI-RS based on the plurality of TCI states.

22. The apparatus of claim 17, further comprising: At least one antenna; as well as A transceiver coupled to the at least one antenna and the at least one processor.

23. An apparatus for wireless communication at a network node, comprising: Memory; as well as At least one processor coupled to the memory, the at least one processor being configured such that the network node: Transmit to the User Equipment (UE) the configuration of multiple quasi-co-located QCL type D relationships for the single-port reference signal RS used for Radio Link Management (RLM) or Beam Fault Detection (BFD); as well as The UE transmits or receives single-frequency network (SFN) communication based on the plurality of QCL type D relationships for the single-port RS used for the RLM or the BFD, wherein for full-duplex communication, the plurality of QCL type D relationships are for an RLM reference signal, the RLM reference signal including at least one of a probe reference signal (SRS) and a channel state information reference signal (CSI-RS) or a synchronization signal block (SSB).

24. The apparatus of claim 23, wherein the plurality of QCL type D relationships are for SRS resources based on a plurality of spatial relationships, wherein each of the plurality of spatial relationships is associated with an SSB index, a CSI-RS index, or an SRS index.

25. The apparatus of claim 23, wherein the configuration is for two QCL type D relationships of the single-port RS for the RLM or the BFD.

26. The apparatus of claim 23, wherein the SRS is configured as an Interference Measurement Resource (IMR), and at least one of the CSI-RS or the SSB is configured as a Channel Measurement Resource (CMR).

27. A method for wireless communication at a network node, comprising: Transmit to the user equipment (UE) the configuration of multiple quasi-co-located QCL type D relationships for the single-port reference signal RS used for radio link management RLM or beam fault detection BFD; as well as Based on the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD, to transmit or receive single-frequency network (SFN) communication with the UE, including: Half-duplex communication is transmitted based on multiple Transmission Configuration Indicator (TCI) states associated with the multiple QCL Type D relationships, wherein the multiple QCL Type D relationships are based on the Synchronization Signal Block (SSB) or Non-Zero Power Channel State Information Reference Signal (NZP-CSI-RS) configured for the single-port RS of the RLM or the BFD, or Full-duplex communication is transmitted based on the multiple TCI states associated with the multiple QCL type D relationships, which are based on the SSB or the NZP-CSI-RS configuration for the single-port RS used by the RLM or the BFD. The full-duplex communication is received based on multiple spatial relationships associated with the multiple QCL type D relationships, the multiple QCL type D relationships being configured based on the probe reference signal SRS for the single-port RS used in the RLM or the BFD.

28. A method for conducting wireless communication at a user equipment (UE), comprising: Receive configuration from network nodes for multiple quasi-co-location QCL type D relationships for a single-port reference signal RS used for Radio Link Management (RLM) or Beam Fault Detection (BFD), wherein for full-duplex communication, the multiple QCL type D relationships are for the single-port RS used for the RLM or the BFD, the single-port RS including a probe reference signal SRS and at least one of a Channel State Information Reference Signal (CSI-RS) or a Synchronization Signal Block (SSB); Based on the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD, transmit or receive single-frequency network (SFN) communication with the network node; as well as Radio link or beam fault detection measurements are performed on the SFN communication based on the configuration of the multiple QCL type D relationships for the single-port RS used for the RLM or the BFD.

29. A method for wireless communication at a network node, comprising: Transmit to the User Equipment (UE) the configuration of multiple quasi-co-located QCL type D relationships for the single-port reference signal RS used for Radio Link Management (RLM) or Beam Fault Detection (BFD); as well as The UE transmits or receives single-frequency network (SFN) communication based on the plurality of QCL type D relationships for the single-port RS used for the RLM or the BFD, wherein for full-duplex communication, the plurality of QCL type D relationships are for an RLM reference signal, the RLM reference signal including at least one of a probe reference signal (SRS) and a channel state information reference signal (CSI-RS) or a synchronization signal block (SSB).

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