Beam indication scheme activation rules

Abstract

The device applies the configuration of the beam indication scheme based on the activation rules of various beam indication schemes. The device determines that a first beam indication scheme is enabled. Based on the enabling of the first beam indication scheme, the device determines that a second beam indication scheme is not enabled. The device applies the first beam indication scheme to determine one or more of the UL beam or DL ​​beam for communication with the base station.

Description

Technical Field

[0001] In general, this disclosure relates to communication systems; more specifically, this disclosure relates to the rules governing the activation of beam indication schemes. Background Technology

[0002] Wireless communication systems have been widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems can use multiple access technologies that support 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.

[0003] Such multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different wireless devices to communicate across city limits, countries, regions, and even globally. An exemplary telecommunications standard is 5G New Radio (NR). 5G NR is part of the Continuous Mobile Broadband Evolution (CMB) initiative released 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 others. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need to further improve 5G NR technology. Furthermore, these improvements can also be applied to other multiple access technologies and telecommunications standards that employ these technologies. Summary of the Invention

[0004] To provide a basic understanding of one or more aspects of the invention, a brief overview of these aspects is given below. This overview is not an exhaustive summary of all anticipated aspects, nor is it intended to identify key or essential elements of all aspects, or to describe the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simple form as a prelude to the detailed description that follows.

[0005] One aspect of this disclosure provides a method, computer-readable medium, and apparatus. The apparatus may be a device at a UE. The device may be a processor and / or modem at the UE, or the UE itself. The apparatus determines to enable a first beam indication scheme. Based on enabling the first beam indication scheme, the apparatus determines to disable a second beam indication scheme. The apparatus applies the first beam indication scheme to determine one or more of an uplink (UL) beam or a downlink (DL) beam for communication with a base station.

[0006] One aspect of this disclosure provides a method, computer-readable medium, and apparatus. The apparatus may be a device at a base station. The device may be a processor and / or modem at the base station, or the base station itself. The apparatus instructs a user equipment (UE) to enable a first beam indication scheme, wherein enabling the first beam indication scheme also instructs that a second beam indication scheme be disabled. The apparatus applies the first beam indication scheme to activate one or more of an uplink (UL) beam or a downlink (DL) beam for communication with the UE.

[0007] For the purposes described above and related, one or more aspects include the features detailed below and specifically pointed out in the claims. The following description and accompanying drawings describe certain exemplary features of one or more aspects. However, these features merely illustrate some of the various methods that can employ the basic principles of these aspects, and the description is intended to include all such aspects and their equivalents. Attached Figure Description

[0008] Figure 1 This is a diagram illustrating an example of a wireless communication system and access network.

[0009] Figure 2A This is a diagram illustrating an example of the first frame, based on various aspects of this disclosure.

[0010] Figure 2B This is a diagram illustrating an example of a DL channel within a subframe, based on various aspects of this disclosure.

[0011] Figure 2C This is a diagram illustrating an example of the second frame, based on various aspects of this disclosure.

[0012] Figure 2D This is a diagram illustrating an example of a UL channel within a subframe, based on various aspects of this disclosure.

[0013] Figure 3 This is a diagram illustrating examples of base stations and user equipment (UEs) in an access network.

[0014] Figure 4This is a diagram illustrating the MAC-CE used to activate the combined DL / UL TCI state.

[0015] Figure 5 This is a call flow diagram showing the signaling between the UE and the base station.

[0016] Figure 6 This is a flowchart of a wireless communication method.

[0017] Figure 7 This is a diagram illustrating an example of the hardware implementation used for the example device.

[0018] Figure 8 This is a flowchart of a wireless communication method.

[0019] Figure 9 This is a diagram illustrating an example of the hardware implementation used for the example device. Detailed Implementation

[0020] The specific embodiments described below with reference to the accompanying drawings are intended merely to describe various configurations and not to indicate that the concepts described herein can be implemented only in these configurations. Specific details are included in the specific embodiments 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 implemented without using these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring these concepts.

[0021] Various apparatuses and methods are now described with reference to some aspects of a telecommunications system. These apparatuses and methods will be described in the following detailed embodiments and depicted in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements”). Such elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0022] For example, an element, any part of an element, or any combination of elements can be implemented as a "processing system" including one or more processors. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, system-on-a-chip (SoCs), baseband processors, field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gate logic, discrete hardware circuitry, and other suitable hardware configured to perform the various functions described throughout this disclosure. One or more processors in a processing system can execute software. Software should be broadly interpreted as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other terms.

[0023] Therefore, in one or more exemplary embodiments, the functions described herein can be implemented in hardware, software, or any combination thereof. When implemented in software, these functions can be stored or encoded as one or more instructions or code on a computer-readable medium. A computer-readable medium includes a computer storage medium. The storage medium can be any available medium accessible to a computer. By way of example, and not limitation, such a computer-readable medium can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of computer-readable media of the foregoing types, or any other medium capable of storing computer-executable code in the form of instructions or data structures and accessible to a computer.

[0024] Figure 1 This diagram illustrates an example of a wireless communication system and access network 100. The wireless communication system (also referred to as a Wireless Wide Area Network (WWAN)) includes a base station 102, a UE 104, an evolved packet core (EPC) 160, and another core network 190 (e.g., a 5G core (5GC)). Base station 102 may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Macro cells include base stations. Small cells include femtocells, picocells, and microcells.

[0025] Base station 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interact 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 interact with core network 190 via a second backhaul link 184. Among other functions, base station 102 can perform one or more of the following functions: transmission of user data, radio channel encryption and decryption, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, radio access network (RAN) sharing, multimedia broadcast multicast service (MBMS), user and device tracking, RAN information management (RIM), paging, location, and transmission of alarm messages. Base stations 102 can communicate directly or indirectly with each other via a third backhaul link 134 (e.g., an X2 interface) (e.g., via EPC 160 or core network 190). The first backhaul link 132, the second backhaul link 184, and the third backhaul link 134 can be wired or wireless.

[0026] Base station 102 can wirelessly communicate with UE 104. Each of base stations 102 can provide communication coverage for a corresponding geographic coverage area 110. Overlapping geographic coverage areas 110 may exist. For example, small cell 102' may have a coverage area 110' that overlaps with the coverage areas 110 of one or more macro base stations 102. A network including small cells and macro cells can be referred to as a heterogeneous network. In addition, a heterogeneous network may also include home node B (eNB) (HeNB), which can provide services to a restricted group called a closed subscriber group (CSG). The communication link 120 between base station 102 and UE 104 may include uplink (UL) (also referred to as reverse link) transmission from UE 104 to base station 102 and / or downlink (DL) (also referred to as forward link) transmission from base station 102 to UE 104. The communication link 120 may use multiple-input multiple-output (MIMO) antenna technology, which includes spatial multiplexing, beamforming, and / or transmit diversity. These communication links may be via one or more carriers. Base station 102 / UE 104 can use up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) of bandwidth for each carrier allocated in carrier aggregation for transmission in each direction up to Yx MHz (x component carriers). These carriers can be adjacent to each other or not. The carrier allocation can be asymmetric with respect to DL and UL (e.g., more or fewer carriers can be allocated to DL compared to UL). These component carriers can include primary component carriers and one or more secondary component carriers. The primary component carrier can be referred to as the primary cell (PCell), and the secondary component carriers can be referred to as secondary cells (SCells).

[0027] Some UEs 104 can communicate with each other using device-to-device (D2D) communication link 158. D2D communication link 158 can use DL / UL WWAN spectrum. D2D communication link 158 can use one or more side link channels, such as Physical Side Link Broadcast Channel (PSBCH), Physical Side Link Discovery Channel (PSDCH), Physical Side Link Shared Channel (PSSCH), and Physical Side Link Control Channel (PSCCH). D2D communication can be performed through various wireless D2D communication systems, such as WiMedia, Bluetooth, ZigBee, Wi-Fi based on the IEEE 802.11 standard, LTE, or NR.

[0028] The wireless communication system may also include a Wi-Fi access point (AP) 150, which communicates with a Wi-Fi station (STA) 152 via a communication link 154 (e.g., in 5 GHz unlicensed spectrum, etc.). When communicating in unlicensed spectrum, the STA 152 / AP 150 may perform a free channel assessment (CCA) before communication to determine whether the channel is available.

[0029] Small cell 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell 102' can employ NR and use the same unlicensed spectrum (e.g., 5 GHz, etc.) as the Wi-Fi AP 150. Small cell 102' employing NR in unlicensed spectrum can improve the coverage and / or increase the capacity of the access network.

[0030] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc., based on frequency / wavelength. In 5G NR, two initial operating bands have been identified as frequency range names FR1 (410MHz-7.125GHz) and FR2 (24.25GHz-52.6GHz). The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Although a portion of FR1 is greater than 6GHz, in various documents and articles, FR1 is often (interchangeably) referred to as the "below 6GHz" band. Similar naming issues sometimes arise with FR2, although it differs from the Extremely High Frequency (EHF) band (30GHz-300GHz) defined as a "millimeter wave" band by the International Telecommunication Union (ITU), it is often (interchangeably) referred to as the "millimeter wave" band in various documents and articles.

[0031] In light of the foregoing, unless otherwise explicitly stated, it should be understood that the terms "below 6 GHz" etc. (if used herein) can broadly refer to frequencies below 6 GHz, which may be within FR1 or include intermediate frequency band frequencies. Furthermore, unless otherwise explicitly stated, it should be understood that the terms "millimeter wave" etc. (if used herein) can broadly refer to frequencies including intermediate frequency band frequencies, which may be within FR2 or within the EHF band.

[0032] Base station 102 (whether a small cell 102' or a large cell (e.g., a macro base station)) may include and / or may be referred to as an eNB, gNodeB (gNB), or another type of base station. Some base stations, such as gNB 180, may operate in the conventional sub-6 GHz spectrum at millimeter wave frequencies and / or near-millimeter wave frequencies to communicate with UE 104. When gNB 180 operates at millimeter wave or near-millimeter wave frequencies, gNB 180 may be referred to as a millimeter wave base station. Millimeter wave base station 180 may utilize beamforming 182 with UE 104 to compensate for path loss and shorter communication distance. Both base station 180 and UE 104 may include multiple antennas (e.g., antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming.

[0033] Base station 180 may transmit beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamformed signals from base station 180 in one or more receive directions 182'. UE 104 may also transmit beamformed signals to base station 180 in one or more transmit directions. Base station 180 may receive beamformed signals from UE 104 in one or more receive directions. Base station 180 / UE 104 may perform beam training to determine the optimal receive and transmit directions for each of base station 180 / UE 104. The transmit and receive directions of base station 180 may be the same or different. The transmit and receive directions of UE 104 may be the same or different.

[0034] EPC 160 may include Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and Packet Data Network (PDN) Gateway 172. MME 162 can communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Typically, MME 162 provides bearer and connection management. All user Internet Protocol (IP) packets are transmitted through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides 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), and PS streaming services and / or other IP services. The BM-SC 170 can provide functions for MBMS user service provisioning and delivery. The BM-SC 170 can serve as an entry point for content provider MBMS transmissions, can be used to authorize and initiate MBMS bearer services in the Public Land Mobile Network (PLMN), and can be used to schedule MBMS transmissions. The MBMS gateway 168 can be used to distribute MBMS services to base stations 102 belonging to the Multicast-Broadcast Single Frequency Network (MBSFN) area belonging to the Broadcast-Specific Service, and can be responsible for session management (start / stop) and collection of billing information related to eMBMS.

[0035] The core network 190 may include Access and Mobility Management Functions (AMF) 192, other AMFs 193, Session Management Functions (SMF) 194, and User Plane Functions (UPF) 195. AMF 192 can communicate with Unified Data Management (UDM) 196. AMF 192 is the control node that handles signaling between UE 104 and the core network 190. Typically, AMF 192 provides QoS streaming and session management. All user Internet Protocol (IP) packets are transmitted through UPF 195. UPF 195 provides UE IP address allocation and other functions. UPF 195 connects to IP service 197. IP service 197 may include the Internet, intranet, IP Multimedia Subsystem (IMS), Packet Switched (PS) Streaming (PSS) service, and / or other IP services.

[0036] Base stations may include and / or be referred to as gNB, Node B, eNB, access point, base transceiver, radio base station, radio transceiver, transceiver function, Basic Services Set (BSS), Extended Services Set (ESS), Transmitter Receiver Point (TRP), or some other suitable term. Base station 102 provides UE 104 with access to EPC 160 or core network 190. Examples of UE 104 include cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite 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, medical devices, implants, sensors / actuators, displays, or any other similar functional devices. Some of UE 104 may be referred to as IoT devices (e.g., parking meters, air pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as a station, mobile station, user station, mobile unit, user unit, radio unit, remote unit, mobile device, radio device, wireless communication device, remote device, mobile user station, access terminal, mobile terminal, radio terminal, remote terminal, handheld device, user agent, mobile client, client, or any other suitable term.

[0037] Refer again Figure 1 In some respects, UE 104 can be configured to apply beam indication schemes based on the enable rules of various beam indication schemes. For example, UE 104 may include application component 198, which is configured to apply beam indication schemes based on the enable rules of various beam indication schemes. UE 104 may determine to enable a first beam indication scheme. UE 104 may determine not to enable a second beam indication scheme based on enabling the first beam indication scheme. UE 104 may apply the first beam indication scheme to determine one or more of an uplink (UL) beam or a downlink (DL) beam for communication with the base station.

[0038] Refer again Figure 1 In some respects, base station 180 can be configured to provide indication of beam indication scheme activation based on various beam indication scheme activation rules. For example, base station 180 may include indication component 199, which is configured to provide indication of beam indication scheme activation based on various beam indication scheme activation rules. Base station 180 may indicate to user equipment (UE) that a first beam indication scheme is enabled, wherein enabling the first beam indication scheme also indicates that a second beam indication scheme is not enabled. Base station 180 may apply the first beam indication scheme to activate one or more of an uplink (UL) beam or a downlink (DL) beam for communication with the UE.

[0039] Although the following description may focus on 5G NR, the concepts described herein can be applied to other similar fields such as LTE, LTE-A, CDMA, GSM and other wireless technologies.

[0040] Figure 2A Figure 200 shows an example of the first subframe within a 5G NR frame structure. Figure 2B Figure 230 shows an example of a DL channel within a 5G NR subframe. Figure 2C Figure 250 shows an example of a second subframe within a 5G NR frame structure. Figure 2D Figure 280 illustrates an example of a 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 (operator system bandwidth) are dedicated to either DL or UL, or Time Division Duplex (TDD), where subframes within a specific set of subcarriers (operator system bandwidth) are dedicated to both DL and UL. Figure 2A , 2C In the provided example, assuming a 5G NR frame structure of TDD, subframe 4 is configured with slot format 28 (mostly DL), where D stands for DL, U for UL, and F can be flexibly used between DL and UL. Subframe 3 is configured with slot format 1 (all UL). When subframes 3 and 4 are displayed with slot formats 1 and 28 respectively, any particular subframe can be configured with any of the various available slot formats 0-61. Slot bit formats 0 and 1 are all DL and UL, respectively. Other slot formats 2-61 include a mixture of DL, UL, and flexible symbols. The UE is configured with slot formats via the Receive Slot Format Indicator (SFI) (dynamically configured via DL Control Information (DCI) or semi-static / static configured via Radio Resource Control (RRC) signaling). Note that the infrastructure description also applies to the 5G NR frame structure, i.e., TDD.

[0041] Other wireless communication technologies may have different frame structures and / or different channels. A frame (10 ms) can be divided into 10 subframes (1 ms) of the same size. Each subframe may include one or more time slots. Subframes may also include micro-slots, which may include 7, 4, or 2 symbols. Depending on the time slot configuration, each time slot may include 7 or 14 symbols. For time slot configuration 0, each time slot may include 14 symbols, while for time slot configuration 1, each time slot may include 7 symbols. Symbols on the DL can be Cyclic Prefix (CP) 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 time slot configuration and parameter set. For slot configuration 0, different parameter sets μ0 to 4 allow each subframe to have 1, 2, 4, 8, and 16 slots, respectively. For slot configuration 1, different parameter sets 0 to 2 allow each subframe to have 2, 4, and 8 slots, respectively. Therefore, for slot configuration 0 and parameter set μ, there are 14 symbols / slots and 2... μ Each time slot / subframe. Subcarrier spacing and symbol length / duration depend on the parameter set. Subcarrier spacing can be equal to 2. μ *15kHz, where μ is the parameter set from 0 to 4. Thus, the subcarrier spacing is 15kHz for parameter set μ = 0 and 240kHz for parameter set μ = 4. The symbol length / duration is inversely proportional to the subcarrier spacing. Figure 2A-2D Examples are provided for slot configuration 0 with 14 symbols per slot and parameter set μ=2 with 4 slots per subframe. Slot duration is 0.25 ms, subcarrier spacing is 60 kHz, and symbol duration is approximately 16.67 μs. Within a set of frames, one or more different bandwidth portions (BWPs) can exist for frequency division multiplexing (see [link to relevant documentation]). Figure 2B Each BWP can have a specific set of parameters.

[0042] The frame structure is represented using a resource grid. Each time slot consists of a resource block (RB) extending for 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.

[0043] like Figure 2AAs shown, some of the REs carry reference (pilot) signals (RS) for the UE. These RSs may include a demodulation RS (DM-RS) (indicated as R for a particular configuration, but other DM-RS configurations are also possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RSs may also include a beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0044] Figure 2B Examples of various DL channels within a subframe of a frame are shown. The Physical Downlink Control Channel (PDCCH) carries the DCI in one or more Control Channel Elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE comprising six RE groups (REGs), each REG comprising 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within a BWP can be referred to as a Control Resource Set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., a common search space, a UE-specific search space) during PDCCH monitoring timing on the CORESET, where PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs can reside at higher and / or lower frequencies on the channel bandwidth. The Primary Synchronization Signal (PSS) can reside within symbol 2 of a specific subframe of the frame. UE 104 uses the PSS to determine subframe / symbol timing and physical layer identification. The Secondary Synchronization Signal (SSS) can reside within symbol 4 of a specific subframe of the frame. The UE uses the SSS to determine the physical layer cell identification group number and radio frame timing. Based on the Physical Layer Identifier and Physical Layer Cell Identifier Group Number, the UE can determine the Physical Cell Identifier (PCI). Based on this PCI, the UE can determine the location of the aforementioned DM-RS. The Physical Broadcast Channel (PBCH) carrying the Master Information Block (MIB) can be logically combined 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 (e.g., System Information Block (SIB)), and paging messages.

[0045] like Figure 2CAs shown, some REs carry DM-RS (indicated as R for a specific configuration, but other DM-RS configurations are also possible) for channel estimation at the base station. The UE can transmit DM-RS for the Physical Uplink Control Channel (PUCCH) and DM-RS for the Physical Uplink Shared Channel (PUSCH). PUSCH DM-RS can be transmitted in the first one or two symbols before the PUSCH. PUCCH DM-RS can be transmitted in different configurations depending on whether a short or long PUCCH is transmitted and the specific PUCCH format used. The UE can transmit a Sounding Reference Signal (SRS). SRS can be transmitted in the last symbol of a subframe. SRS can have a comb structure, and the UE can transmit SRS on one of these comb structures. The base station can use SRS for channel quality estimation to implement frequency-dependent scheduling on the UL.

[0046] Figure 2D Examples of various UL channels within a subframe of a frame are shown. The PUCCH can 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) ACK / HARQ feedback. The PUSCH carries data, and can also be used to carry buffer status reports (BSR), power clearance reports (PHR), and / or UCI.

[0047] Figure 3This is a block diagram illustrating communication between base station 310 and UE 350 in the access network. In the DL (Data Link Module), IP packets from EPC 160 are provided to controller / processor 375. Controller / processor 375 implements Layer 3 and Layer 2 functions. Layer 3 includes the Radio Resource Control (RRC) layer, and Layer 2 includes the Serving Data Adaptation Protocol (SDAP) layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer. The controller / processor 375 provides: RRC layer functions associated with broadcasting system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), movement between radio access technologies (RATs), and measurement configuration for UE measurement reporting; PDCP layer functions associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functions associated with upper-layer packet data unit (PDU) transmission, error correction via ARQ, connection, segmentation, and reassembly of RLC service data units (SDUs), resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functions associated with mapping between logical channels and transport channels, multiplexing MAC SDUs onto transport blocks (TBs), demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority processing, and logical channel priority allocation.

[0048] Transmit (TX) processor 316 and receive (RX) processor 370 implement Layer 1 functions associated with various signal processing functions. Layer 1, including the physical (PHY) layer, may include error detection of the transport channel, forward error correction (FEC) encoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. TX processor 316 processes the mapping for the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase phase shift keying (M-PSK), and M-order quadrature amplitude modulation (M-QAM)). The encoded and modulated symbols can then be segmented into parallel streams. Each stream can then be mapped to OFDM subcarriers, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently combined using an inverse Fourier transform (IFFT) to generate a physical channel carrying a stream of time-domain OFDM symbols. 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 to implement spatial processing. The channel estimates can be derived from reference signals and / or channel condition feedback transmitted by UE 350. Subsequently, each spatial stream can be provided to a different antenna 320 via a separate transmitter 318TX. Each transmitter 318TX can use the respective spatial stream to modulate an RF carrier for transmission.

[0049] At UE 350, each receiver 354RX receives signals through 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 functions associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial streams destined for UE 350. If multiple spatial streams are destined for UE 350, the RX processor 356 can combine them into a single OFDM symbol stream. Subsequently, the RX processor 356 uses a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal includes 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 most probable signal constellation points transmitted by base station 310. These soft decisions can be based on channel estimates calculated by channel estimator 358. These soft decisions are then decoded and deinterleaved to recover the data and control signals originally transmitted by base station 310 on the physical channel. This data and control signals are then provided to controller / processor 359, which implements Layer 3 and Layer 2 functions.

[0050] The controller / processor 359 can be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between transport and logical channels to recover IP packets from the EPC 160. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operation.

[0051] Similar to the functions described in the DL transmission combined with base station 310, controller / processor 359 provides: RRC layer functions associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functions associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functions associated with upper-layer PDU transmission, error correction via ARQ, RLC SDU connection, segmentation and reassembly, RLC data PDU resegmentation, and RLC data PDU reordering; and MAC layer functions associated with mapping between logical channels and transport channels, MAC SDU multiplexing onto TB, demultiplexing MAC SDU from TB, scheduling information reporting, error correction via HARQ, priority processing, and logical channel priority allocation.

[0052] The channel estimate derived by channel estimator 358 from the reference signal or feedback transmitted by base station 310 can be used by TX processor 368 to select appropriate coding and modulation schemes and facilitate spatial processing. The spatial stream generated by TX processor 368 can be provided to different antennas 352 via their respective transmitters 354TX. Each transmitter 354TX can use its own spatial stream to modulate an RF carrier for transmission.

[0053] Base station 310 processes UL transmissions in a manner similar to that described in conjunction with the receiver function at UE 350. Each receiver 318RX receives signals via its respective antenna 320. Each receiver 318RX recovers the information modulated onto the RF carrier and provides that information to RX processor 370.

[0054] The controller / processor 375 can be associated with a memory 376 that stores program code and data. The memory 376 can be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing, packet reassembly, decryption, header decompression, and control signal processing between transport and logical channels to recover IP packets from the UE 350. IP packets from the controller / processor 375 can 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.

[0055] At least one of the TX processor 368, RX processor 356, and controller / processor 359 can be configured to perform operations related to... Figure 1 The 198 related aspects.

[0056] 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 198 related aspects.

[0057] In wireless communication, beam indication overhead and latency can be saved by signaling a common beam across multiple DL and UL resources. Common beam indication can be signaled via a joint DL / UL TCI status. However, further clarification should indicate whether the joint DL / UL TCI status can be enabled simultaneously with other beam indication schemes (e.g., DL / UL-only TCI status).

[0058] The aspects presented in this paper provide enhancements to multi-beam operation, such as, but not limited to, target frequency range 2 (FR2), and also applicable to frequency range 1 (FR1). These aspects can facilitate more efficient DL / UL beam management (e.g., lower latency and overhead) to support higher inter-cell mobility centered on intra-layer and layer 1 / layer 2 and / or a greater number of configured TCI states. For example, the aspects can enable the configuration and / or activation of common beams for data and control transmission / reception for DL ​​and UL, particularly common beams for in-band carrier aggregation (CA), a unified TCI framework for DL ​​and UL beam indication, or enhanced signaling mechanisms to improve latency and efficiency through greater use of dynamic control signaling (e.g., compared to RRC signaling). Considering the mitigation of UL coverage loss due to Maximum Permissible Exposure (MPE), the aspects can further facilitate UL beam selection for UEs equipped with multiple panels, based on UL beam indication and a unified TCI framework for fast UL panel selection.

[0059] The aspects presented in this paper provide a configuration that allows the UE to utilize beam indication scheme enable relationship rules. Enable relationship rules can indicate the activation of a first beam indication scheme, thereby enabling a second beam indication scheme simultaneously or not simultaneously.

[0060] Figure 4 Example 400 illustrates a MAC-CE 412 used to activate the joint DL / UL TCI state and DL / UL communication. The MAC-CE 412 can be a UE-specific MAC-CE for TCI state activation / deactivation, transmitted from the base station to the UE on the PDSCH. The UE-specific MAC-CE's TCI state activation / deactivation is identified via the MAC PDU sub-header. The MAC-CE 412 can have a variable-size bitmap including a serving cell ID field, a BWP ID field, and a C... i Fields, TCI status ID i,j The MAC-CE 412 includes two fields: a Serving Cell ID and a Reserved (R) field. The Serving Cell ID indicates the identifier of the serving cell applied by MAC-CE 412 in the case of Carrier Aggregation (CA). MAC-CE 412 can activate the TCI state of any of the UE 402's data channels (e.g., PDSCH, PUSCH) or control channels (e.g., Control Resource Set (CORESET), PUCCH, or RS signals such as CSI-RS and SRS)). For example, this field can be 5 bits long. The BWP ID indicates that MAC-CE 412 applies the DL BWP as a code point. For example, the BWPID field can be 2 bits long. i This field indicates whether the i-th TCI code point (i = 0, ..., N) contains a TCI state ID. i,2 An eight-bit byte. If this field is set to "1", then a TCI status ID is present. i,2 The eight-bit byte. If this field is set to "0", there is no TCI status ID. i,2 Eight-bit bytes. TCI Status ID i,j The field indicates the TCI status, where i is the index of the code point and the TCI status ID. i,j This is represented by the j-th TCI state indicated by the i-th code point. The TCI state is mapped to the TCI code point, through which it has a TCI state ID. i,j The order of the TCI code points in the field set is used to determine the TCI status ID. 0,1 and TCI status ID 0,2 The first TCI code point will be mapped to code point value 0, with TCI state ID. 1,1 and TCI status ID 1,2The second TCI code point is mapped to code point value 1, and so on. Based on the indication of the Ci field, the TCI status ID... i,2 This is optional. The maximum number of active TCI code points can be 8 (correspondingly, N≤7), and the maximum number of TCI states mapped to TCI code points can be 2. In one configuration, the maximum number of TCI states mapped to TCI code points can be greater than 2. When the number of TCI states mapped to TCI code points is M>2 (TCI state IDs...), this is considered an optional feature. i,m When m = 1, ..., M, multiple M-1C can exist for a TCI code point. i The fields indicate whether a TCI status ID exists. i,m Each of the values ​​in the array, where m = 2, ..., M. The R field is a reserved bit that can be set to "0".

[0061] In the case of multiple TRPs based on a single DCI, a TRP can simultaneously schedule DL reception or UL transmission with each of the multiple TRPs by sending a single scheduling DCI. In this case, the corresponding activation MAC-CE can activate at least one set of at least one joint DL / UL TCI states. At least in the case of a single activated set, each of the multiple activated joint DL / UL TCI states can be sequentially applied to the DL reception or UL transmission associated with each of the multiple scheduled TRPs. For example, if the MAC-CE activates only set 0 with two joint DL / UL TCI states, then the two joint TCI states are mapped one-to-one to the two TRPs scheduled by all scheduling DCIs, wherein the channel type or resource for the DL reception or UL transmission of each scheduled TRP is dynamically indicated in each scheduled DCI. The channel type or resource associated with the DL reception of the TRP can be, for example, PDSCH, PDCCH, COREST, CSI-RS, and the channel type or resource associated with the UL transmission of the TRP can be, for example, PUSCH, PUCCH, SRS, or PRACH. Therefore, each scheduling DCI may not have a TCI code point field and may not need to specify the joint TCI state used for the channel type or resource of DL reception or UL transmission for each scheduled TRP. The resources used for DL ​​reception or UL transmission of TRPs with multiple schedulings can be frequency division multiplexing (FDM), time division multiplexing (TDM), or space division multiplexing (SDM), which can be dynamically indicated in each scheduling DCI. For example, a first scheduling DCI might schedule two FDM-based PDSCHs using two TDM-based PUCCHs associated with two TRPs, and a second scheduling DCI might schedule two TDM-based PUSCHs associated with two TRPs. For both scheduling DCIs, the two joint TCI states in set 0 activated by MAC-CE can be applied, respectively, to the resources allocated to the DL reception or UL transmission associated with the two TRPs. For example, a first joint TCI state can be applied to the first PDSCH in two FDM-based PDSCHs, the first PUCCH in two TDM-based PUCCHs, and the first PUSCH in two TDM-based PUSCHs. Similarly, a second joint TCI state can be applied to the second PDSCH in two FDM-based PDSCHs, the second PUCCH in two TDM-based PUCCHs, and the second PUSCH in two TDM-based PUSCHs. The mapping between the joint TCI state and the resources associated with each TRP for DL ​​reception or UL transmission can be determined in the specification (i.e., predetermined) or dynamically determined by the base station via RRC / MAC-CE / DCI.

[0062] If MAC-CE activates multiple joint TCI state sets, e.g., N+1 sets, and N>0, then the DCI can further indicate a TCI code point mapped to one of the multiple joint TCI state sets. In a first configuration, the indicated TCI code point can be used only to indicate resources for DL ​​reception or UL transmissions scheduled by the same DCI for that TCI code point. For example, the first / second joint TCI state can be applied to the first / second PDSCH and the first / second PUCCH scheduled by that DCI, respectively. In a second configuration, the indicated TCI code point can be used for DL ​​reception or UL transmissions scheduled by all the following scheduling DCIs. For example, the first DCI can indicate a TCI code point mapped to a set of first and second joint TCI states, and the first / second joint TCI state can be applied to resources for DL ​​reception or UL transmissions of the first / second TRP scheduled by all scheduling DCIs after the first DCI. Among multiple TCI code points corresponding to multiple active joint DL / UL TCI state sets, at least when no DCI indicates a TCI code point, a TCI code point can be specified to indicate the default common beam set (e.g., the TCI code point with the lowest / highest code point ID).

[0063] The base station and the UE can apply different beam indication schemes to the UE to determine the beam used for communication with the base station. Examples of beam indication schemes include schemes such as (e.g., Scheme 1) where the base station can indicate a joint DL / UL TCI state to the UE to determine the downlink and uplink beams used for communication with the base station. The joint DL / UL TCI state can indicate a common beam used for DL ​​and UL communication. The channels for which the indication of the joint DL / UL TCI state is applied can include any one of PDCCH, PDSCH, PUCCH, PUSCH, PRACH, CSI-RS, or SRS.

[0064] In some aspects, and in some examples, the combined DL / UL TCI state can be used for a single TRP. In other examples, the combined DL / UL TCI state can utilize multiple DCIs (mDCIs) for multiple TRPs, where different DCIs can be used to schedule transmissions or receptions associated with different TRPs. In still other examples, the combined DL / UL TCI state can be based on a single DCI (sDCI) for multiple TRPs, where a single DCI can be used to schedule transmissions or receptions associated with different TRPs.

[0065] Another example of a beam indication scheme (e.g., scheme 2) is a DL TCI state-only scheme, which indicates a TCI state or beam used for downlink communication but not for uplink communication, such as a DL TCI state-only indication. Channels applying the DL TCI state-only indication can include any of the PDCCH, PDSCH, or CSI-RS.

[0066] Another example of a beam indication scheme (e.g., scheme 3) is a UL TCI state-only scheme, which indicates a TCI state or beam used for uplink communication but not for downlink communication, such as a UL TCI state-only indication. Channels applying the UL TCI state-only indication can include any one of PUCCH, PUSCH, PRACH, or SRS.

[0067] Another example of a beam indication scheme (e.g., scheme 4) is a spatial relationship information scheme, which provides spatial relationship information for the UE to determine the beams for uplink communication, such as spatial relationship information indication for PUCCH, PRACH, or SRS.

[0068] Another beam indication scheme (e.g., scheme 5) can indicate a default beam for one or more channels or signals. A default beam is applied to these channels or signals when one or more channels or signals are scheduled but no beaming information is explicitly configured or indicated. For example, a beam indication scheme (e.g., scheme 5) can provide a default beam for one or more of PUCCH, SRS, and / or PUSCH (e.g., a default beaming scheme for PUCCH, SRS, and PUSCH). The beam indication scheme can include two scenarios to apply the default beam or default spatial relationship of PUCCH, SRS, or PUSCH:

[0069] 1. Scenario 1: A dedicated PUCCH or SRS in FR2 used to serve the cell, without any spatial relationship configuration.

[0070] 2. Scenario 2: When no PUCCH is configured or no spatial relationship is configured on the active UL BWP in FR2, PUSCH is scheduled by DCI format 0_0.

[0071] For each of the above scenarios, since no spatial relation information is explicitly indicated, the default spatial relation information for PUCCH, SRS, or PUSCH is determined in the following two cases:

[0072] 1. When a CORESET is configured on the serving cell, the RS that provides the quasi-co-located (QCL)-TypeD assumption is used as the default spatial relationship in the TCI state / QCL assumption of the CORESET with the lowest ID in the active BWP.

[0073] 2. When no CORESET is configured on the serving cell, in the active PDSCH TCI state with the lowest TCI code point ID in the active DL BWP, the RS that provides the QCL TypeD assumption is used as the default spatial relationship.

[0074] Another beam indication scheme (e.g., scheme 6) can indicate one or more default PDSCH beams. The default PDSCH beam can be used for a single TRP, an mDCI-based TR, or an sDCI-based TRP. For example, the default PDSCH beam could include a default PDSCH beam used for a single TRP, where the default PDSCH beam is applied.

[0075] 1. If the RRC parameter “tci-PresentInDCI” is not configured for CORESET scheduling of PDSCH, or PDSCH is scheduled by DCI format 1_0, and the time offset between the DL DCI reception and the corresponding PDSCH is equal to or greater than the threshold timeDurationForQCL.

[0076] 2. If the offset between the received DL DCI and the corresponding PDSCH is less than the threshold timeDurationForQCL.

[0077] In addition, the default PDSCH beam may include a default PDSCH beam for multi-TRP based on m-DCI or sDCI.

[0078] The aspects presented in this paper provide a relationship rule that a UE and / or base station can apply to determine one or more beam indication schemes enabled for communication between the UE and the base station from a set of beam indication schemes. For example, if one beam indication scheme is enabled, another beam indication scheme can be enabled simultaneously or not simultaneously (e.g., based on the relationship rule between beam indication schemes). In some examples, a beam indication scheme can be enabled via an explicit flag (e.g., an RRC flag) sent by the base station to the UE. For example, for each of schemes 1-6, an RRC flag may exist, and if the RRC flag is set to "enabled," the corresponding beam indication is enabled; otherwise, it is disabled. In another example, the enabling of a beam indication scheme can be indicated by other signaling, such as by configuring a corresponding beam indicator associated with the beam indication scheme. For example, if a TCI state list for joint DL / UL TCI states is configured via RRC signaling, scheme 1 can be enabled; otherwise, it is disabled. In yet another example, the enabling of a beam indication scheme can be indicated by the base station activating a beam indicator specifically configured for the UE associated with the beam indication scheme. For example, scheme 1 can be enabled if the MAC-CE activates a set of TCI states, and all activated TCI states in that set correspond to a joint DL / UL TCI state. The beam indication schemes covered by the enabling relationship rule can include any of the following schemes:

[0079] 1. Option 1: Joint DL / UL TCI status for a single TRP, an mDCI-based TRP, or an sDCI-based TRP;

[0080] 2. Option 2: DL TCI status only;

[0081] 3. Option 3: UL TCI status only;

[0082] 4. Option 4: Spatial relationship information for the uplink;

[0083] 5. Option 5: Default beam or spatial relationship information for PUCCH, SRS, or PUSCH;

[0084] 6. Option 6: Default PDSCH beam for a single TRP, an mDCI-based TRP, and an sDCI-based TRP.

[0085] Enabling relationship rules can be based on conflicts between one or more beam indication schemes. For example, if a joint DL / UL TCI state is enabled for a single TRP (e.g., scheme 1), then DL / UL transmission or reception can follow the active joint DL / UL TCI state. Therefore, DL TCI state (e.g., DL TCI state only), UL TCI state (e.g., UL TCI state only), or beam indication schemes based on spatial relationship information (e.g., schemes 2, 3, 4) can be enabled without simultaneously with the joint DL / UL TCI state beam indication scheme.

[0086] Figure 5 This is a call flowchart 500 showing the signaling between UE 502 and base station 504. Base station 504 can be configured to provide at least one cell. UE 502 can be configured to communicate with base station 504. For example, in Figure 1 In the context of this, base station 504 can correspond to base station 102 / 180, therefore, the cell can include a geographical coverage area 110 in which communication coverage is provided and / or small cell 102' has a coverage area 110'. Furthermore, UE 502 can correspond to at least UE 104. In another example, in Figure 3 In this context, base station 504 can correspond to base station 310, and UE 502 can correspond to UE 350. Dashed lines are used to indicate optional aspects.

[0087] As shown in 506, base station 504 can instruct UE 502 to enable the first beam indication scheme. The beam indication scheme can be based on any of the following: combined DL / UL TCI status, DL TCI status and UL TCI status, spatial relationship information; default PUCCH / SRS / PUSCH beam indication or default PDSCH beam indication.

[0088] Enabling a first beam indication scheme can indicate that a second beam indication scheme is disabled or not enabled. In some aspects, based on a conflict between the first and second beam indication schemes, the second beam indication scheme may be disabled or not enabled. In some aspects, the base station or UE may determine that the second beam indication scheme is disabled based on a relationship rule between the first and second beam indication schemes. The base station may indicate that the first beam indication scheme is enabled based on the configuration of one or more beam indications. In some aspects, the base station may indicate that the first beam indication scheme is enabled based on the activation of one or more beam indications. The first beam indication scheme may include one of the combined DL and UL TCI status indication schemes. Based on the enabling of the DL and UL TCI status indication schemes, the UE and / or the base station may determine that the downlink TCI status indication scheme, the uplink TCI status indication scheme, and / or the spatial relationship information indication scheme are disabled or not enabled. Similarly, if the combined DL and UL TCI status indication scheme, the DL TCI status scheme, the UL TCI status indication scheme, or the spatial relationship scheme is enabled, the UE can determine that the default PUCCH beam indication scheme, the default SRS beam indication scheme, the default PUSCH beam indication scheme, or the default PUSCH beam indication scheme is not enabled. Therefore, the second beam indication scheme may include one of the following: the combined DL and UL TCI status indication scheme, the downlink TCI status indication scheme, the uplink TCI status indication scheme, the spatial relationship information indication scheme, the default PUCCH beam indication scheme, the default SRS beam indication scheme, the default PUSCH beam indication scheme, or the default PDSCH beam indication scheme.

[0089] As shown at 508, UE 502 can determine whether to enable the first beam indication scheme. In some aspects, UE 502 can determine whether to enable the first beam indication scheme based on the configuration of one or more beam indications. In some aspects, UE 502 determines whether to enable the first beam indication scheme based on the activation of one or more beam indications.

[0090] In some respects, base station 504 can send an indication to enable the first beam indication scheme. Base station 504 can send the indication to UE 502 to enable the first beam indication scheme. UE 502 can receive the indication from base station 504 to enable the first beam indication scheme. The UE can determine whether to enable the first beam indication scheme based on the indication.

[0091] As shown at 510, UE 502 can determine whether to disable the second beam indication scheme based on enabling the first beam indication scheme. In some aspects, UE 502 can determine whether to disable the second beam indication scheme based on a conflict between the first and second beam indication schemes. In some aspects, UE 502 can determine whether to disable the second beam indication scheme based on a relationship rule between the first and second beam indication schemes. The second beam indication scheme includes one of the following: a combined DL and UL TCI status indication scheme, a downlink TCI status indication scheme, an uplink TCI status indication scheme, a spatial relationship information indication scheme, a default PUCCH beam indication scheme, a default SRS beam indication scheme, a default PUSCH beam indication scheme, or a default PDSCH beam indication scheme.

[0092] As shown at 512, UE 502 may apply a first beam indication scheme. UE 502 may apply the first beam indication scheme to determine one or more of the UL beam or DL ​​beam for communication with base station 504.

[0093] As shown at 514, base station 504 can apply a first beam indication scheme. Base station 504 can apply the first beam indication scheme to activate one or more of the UL beam or DL ​​beam for communication with UE 502.

[0094] As shown at 516, UE 502 and base station 504 can communicate with each other based on an applied beam indication scheme. For example, UE 502 and base station 504 can communicate with each other based on a first beam indication scheme, wherein UE 502 and base station 504 activate one or more of the UL beam or DL ​​beam for communication based on the first beam indication beam scheme.

[0095] Figure 6 This is a flowchart 600 of a wireless communication method. The method can be performed by a UE or a component of the UE (e.g., UE104, 502; device 702; cellular baseband processor 704, which may include memory 360 and may be the entire UE 350 or a component of the UE 350, such as TX processor 368, RX processor 356, and / or controller / processor 359). One or more of the operations shown can be omitted, transposed, or performed simultaneously. Dashed lines are used to indicate optional aspects. The method can specify enable relationship rules for various beam indication schemes to the UE.

[0096] In some aspects, for example at 604, the UE may receive an indication to enable the first beam indication scheme. For example, 604 may be performed by the indication component 742 of device 702. The UE may receive the indication to enable the first beam indication scheme from the base station. The UE may determine whether to enable the first beam indication scheme based on this indication.

[0097] At 602, the UE can determine whether to enable the first beam indication scheme. For example, 602 can be performed by the determining component 740 of device 702. In some aspects, the UE can determine whether to enable the first beam indication scheme based on the configuration of one or more beam indications. In some aspects, the UE determines whether to enable the first beam indication scheme based on the activation of one or more beam indications. The first beam indication scheme may include one of the following: a combined DL and UL Transport Configuration Indicator (TCI) status indication scheme, a downlink TCI status indication scheme, an uplink TCI status indication scheme, a spatial relationship information indication scheme, a default physical uplink control channel (PUCCH) beam indication scheme, a default sounding reference signal (SRS) beam indication scheme, a default physical uplink shared channel (PUSCH) beam indication scheme, or a default physical downlink shared channel (PDSCH) beam indication scheme.

[0098] At 606, the UE can determine whether to disable the second beam indication scheme based on enabling the first beam indication scheme. For example, 606 can be performed by the determining component 740 of device 702. In some aspects, the UE can determine whether to disable the second beam indication scheme based on a conflict between the first and second beam indication schemes. In some aspects, the UE can determine whether to disable the second beam indication scheme based on a relationship rule between the first and second beam indication schemes. The second beam indication scheme includes one of the following: a combined DL and UL TCI status indication scheme, a downlink TCI status indication scheme, an uplink TCI status indication scheme, a spatial relationship information indication scheme, a default PUCCH beam indication scheme, a default SRS beam indication scheme, a default PUSCH beam indication scheme, or a default PDSCH beam indication scheme.

[0099] At 608, the UE can apply a first beam indication scheme. For example, 608 can be performed by the application component 744 of device 702. The UE can apply the first beam indication scheme to determine one or more of an uplink (UL) beam or a downlink (DL) beam for communicating with the base station.

[0100] Figure 7Figure 700 illustrates an example of a hardware implementation for device 702. Device 702 is a UE and includes a cellular baseband processor 704 (also referred to as a modem) coupled to a cellular RF transceiver 722, and one or more Subscriber Identity Module (SIM) cards 720, an application processor 706 coupled to a Secure Digital Card (SD) card 708 and a screen 710, a Bluetooth module 712, a Wireless Local Area Network (WLAN) module 714, a Global Positioning System (GPS) module 716, and a power supply 718. The cellular baseband processor 704 communicates with UE 104 and / or BS 102 / 180 via the cellular RF transceiver 722. The cellular baseband processor 704 may include a computer-readable medium / memory. This computer-readable medium / memory may be non-transitory. The cellular baseband processor 704 is responsible for general processing, which includes executing software stored on the computer-readable medium / memory. When the software is executed by the cellular baseband processor 704, it causes the cellular baseband processor 704 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 704 during software execution. The cellular baseband processor 704 also includes a receiving component 730, a communication manager 732, and a transmission component 734. The communication manager 732 includes one or more of the components shown. The components within the communication manager 732 can be stored in the computer-readable medium / memory and / or configured as hardware within the cellular baseband processor 704. The cellular baseband processor 704 can be a component of the UE 350 and can include a memory 360 and / or at least one of a TX processor 368, an RX processor 356, and a controller / processor 359. In one configuration, the device 702 can be a modem chip and only include the baseband processor 704, and in another configuration, the device 702 can be the entire UE (e.g., see...). Figure 3 (350) and includes the other modules mentioned above in the device 702.

[0101] Communication manager 732 includes a determining component 740 configured to determine the enabling of a first beam indication scheme, such as, in combination with Figure 6 As described in section 602, the determining component can be configured to determine whether a second beam indication scheme is disabled based on enabling the first beam indication scheme, for example, as in combination with... Figure 6 As described in 606. The communication manager 732 also includes an indication component 742 configured to receive an indication for enabling a first beam indication scheme, for example, as in conjunction with Figure 6 As described in section 604. The communication manager 732 also includes an application component 744 configured to apply a first beam indication scheme, for example, as in conjunction with... Figure 6 As described in 608.

[0102] The device may include means for performing Figure 6 The other components of each box in the algorithm of the aforementioned flowchart. Therefore, Figure 6 Each block in the aforementioned flowchart can be executed by a component, and the apparatus may include one or more of these components. These components may be one or more hardware parts specifically configured to perform the stated processing / algorithm, implemented by a processor configured to perform the stated processing / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0103] In one configuration, device 702 (specifically cellular baseband unit 704) includes: a unit for determining whether a first beam indication scheme is enabled. The device includes: a unit for determining whether a second beam indication scheme is disabled based on enabling the first beam indication scheme. The device includes: a unit for applying the first beam indication scheme to determine one or more of a UL beam or DL ​​beam for communicating with a base station. The device further includes: a unit for receiving from the base station an indication indicating that the first beam indication scheme is enabled. The UE determines whether the first beam indication scheme is enabled based on the indication. These aforementioned units may be one or more of the aforementioned components of device 702 configured to perform the functions described above. As described above, device 702 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Therefore, in one configuration, these aforementioned units may be the TX processor 368, the RX processor 356, and the controller / processor 359 configured to perform the functions stated above.

[0104] Figure 8 This is a flowchart 800 of a wireless communication method. The method can be performed by a base station or a component of a base station (e.g., base station 102 / 180, 504; device 902; baseband unit 904, which may include memory 376 and may be the entire base station 310 or a component of base station 310, such as TX processor 316, RX processor 370, and / or controller / processor 375). One or more of the operations shown can be omitted, transposed, or performed simultaneously. Dashed lines are used to indicate optional aspects. This method can allow the base station to specify enable relationship rules for various beam indication schemes to the UE.

[0105] At point 802, the base station may instruct the activation of a first beam indication scheme. For example, 802 may be performed by the indication component 940 of device 902. The base station may instruct the UE to activate the first beam indication scheme. Activation of the first beam indication scheme also instructs the disactivation of a second beam indication scheme. In some aspects, the second beam indication scheme may be disactivated based on a conflict between the first and second beam indication schemes. In some aspects, the base station may determine the disactivation of the second beam indication scheme based on a relationship rule between the first and second beam indication schemes. The base station may instruct the activation of the first beam indication scheme based on the configuration of one or more beam indications. In some aspects, the base station may instruct the activation of the first beam indication scheme based on the activation of one or more beam indications. The first beam indication scheme may include one of the following: a combined DL and UL TCI status indication scheme, a downlink TCI status indication scheme, an uplink TCI status indication scheme, a spatial relationship information indication scheme, a default PUCCH beam indication scheme, a default SRS beam indication scheme, a default PUSCH beam indication scheme, or a default PUSCH beam indication scheme. The second beam indication scheme may include one of the following: a combined DL and UL TCI status indication scheme, a downlink TCI status indication scheme, an uplink TCI status indication scheme, a spatial relationship information indication scheme, a default PUCCH beam indication scheme, a default SRS beam indication scheme, a default PUSCH beam indication scheme, or a default PDSCH beam indication scheme.

[0106] In some aspects, such as at 804, the base station may send an indication to enable the first beam indication scheme. For example, 804 may be performed by the indication component 940 of the device 902. The base station may send an indication to the UE to enable the first beam indication scheme.

[0107] At point 806, the base station can apply a first beam indication scheme. For example, 806 can be performed by application component 942 of device 902. The base station can apply the first beam indication scheme to activate one or more of the UL beam or DL ​​beam for communication with the UE.

[0108] Figure 9Figure 900 illustrates an example of a hardware implementation of device 902. Device 902 is a BS and includes a baseband unit 904. Baseband unit 904 can communicate with UE 104 via a cellular RF transceiver. Baseband unit 904 may include computer-readable medium / memory. Baseband unit 904 is responsible for general processing, including executing software stored on the computer-readable medium / memory. When the software is executed by baseband unit 904, it causes baseband unit 904 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by baseband unit 904 during software execution. Baseband unit 904 also includes a receiving component 930, a communication manager 932, and a transmitting component 934. Communication manager 932 includes one or more of the components shown. Components within communication manager 932 may be stored in computer-readable medium / memory and / or configured as hardware within baseband unit 904. The baseband unit 904 may be a component of the BS 310 and may include at least one of the memory 376 and / or the TX processor 316, the RX processor 370, and the controller / processor 375.

[0109] The communication manager 932 includes an indication component 940 that can indicate the activation of a first beam indication scheme, such as in combination with Figure 8 As described in 802. The indication component 940 can be configured to transmit an indication for enabling the first beam indication scheme, for example, as in combination with... Figure 8 As described in 804. The communication manager 932 also includes an application component 942 that can apply the first beam indication scheme, for example, as in combination with Figure 8 As described in 806.

[0110] The device may include means for performing Figure 8 The other components of each box in the algorithm of the aforementioned flowchart. Therefore, Figure 8 Each block in the aforementioned flowchart can be executed by a component, and the apparatus may include one or more of these components. These components may be one or more hardware parts specifically configured to perform the stated processing / algorithm, implemented by a processor configured to perform the stated processing / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0111] In one configuration, device 902 (specifically baseband unit 904) includes: a unit for instructing a UE to enable a first beam indication scheme. Enabling the first beam indication scheme also indicates that a second beam indication scheme is not enabled. The device includes: a unit for applying the first beam indication scheme to activate one or more of a UL beam or DL ​​beam for communication with the UE. The device also includes: a unit for sending an instruction to the UE to instruct the first beam indication scheme to be enabled. These aforementioned units may be one or more of the aforementioned components of device 902 configured to perform the functions described above. As described above, device 902 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Therefore, in one configuration, these aforementioned units may be the TX processor 316, the RX processor 370, and the controller / processor 375 configured to perform the functions stated above.

[0112] It should be understood that the specific order or hierarchy of blocks in the processing / flowcharts disclosed herein is merely an example of an exemplary method. It should be understood that these specific orders or hierarchies of blocks in the processing / flowcharts may be rearranged based on design preferences. Furthermore, some blocks may be combined or omitted. The appended method claims give the elements of various blocks in an exemplary order, but this does not imply that they are limited to the given specific order or hierarchy.

[0113] The following examples are merely illustrative and may be combined with other embodiments or aspects of the teachings described herein, but are not limited thereto.

[0114] Example 1 is a method for wireless communication at a UE, the method comprising: determining to enable a first beam indication scheme; determining to disable a second beam indication scheme based on enabling the first beam indication scheme; and applying the first beam indication scheme to determine one or more of an uplink (UL) beam or a downlink (DL) beam for communicating with a base station.

[0115] In Example 2, the method according to Example 1 further includes: the UE determining not to enable the second beam indication scheme based on the conflict between the first beam indication scheme and the second beam indication scheme.

[0116] In Example 3, the method according to Example 1 or 2 further includes: the UE determining that the second beam indication scheme is not enabled based on the relationship rule between the first beam indication scheme and the second beam indication scheme.

[0117] In Example 4, the method according to any one of Examples 1-3 further includes: receiving from the base station an indication for enabling the first beam indication scheme, wherein the UE determines to enable the first beam indication scheme based on the indication.

[0118] In Example 5, the method according to any one of Examples 1-4 further includes: the UE determining whether to enable the first beam indication scheme based on the configuration of one or more beam indications.

[0119] In Example 6, the method according to any one of Examples 1-5 further includes: the UE determining to enable the first beam indication scheme based on the activation of one or more beam indications.

[0120] In Example 7, the method according to any one of Examples 1-6 further includes: the first beam indication scheme includes one of the following: a combined DL and UL TCI status indication scheme, a downlink TCI status indication scheme, an uplink TCI status indication scheme, a spatial relationship information indication scheme, a default PUCCH beam indication scheme, a default SRS beam indication scheme, a default PUSCH beam indication scheme, or a default PDSCH beam indication scheme.

[0121] In Example 8, the method according to any one of Examples 1-7 further includes the second beam indication scheme comprising one of the following: a combined DL and UL TCI status indication scheme, a downlink TCI status indication scheme, an uplink TCI status indication scheme, a spatial relationship information indication scheme, a default PUCCH beam indication scheme, a default SRS beam indication scheme, a default PUSCH beam indication scheme, or a default PDSCH beam indication scheme.

[0122] Example 9 is a device that includes one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions executable by the one or more processors to enable a system or apparatus to implement the method according to any one of Examples 1-8.

[0123] Example 10 is a system or apparatus that includes units for implementing the method or implementing the apparatus according to any one of Examples 1-8.

[0124] Example 11 is a non-transitory computer-readable medium storing instructions executable by one or more processors to enable the one or more processors to implement the method according to any one of Examples 1-8.

[0125] Example 12 is a method for wireless communication for a base station, comprising: instructing a user equipment (UE) to enable a first beam indication scheme, wherein enabling the first beam indication scheme further instructs a second beam indication scheme to be disabled; and applying the first beam indication scheme to activate one or more of an uplink (UL) beam or a downlink (DL) beam for communicating with the UE.

[0126] In Example 13, the method according to Example 12 further includes disabling the second beam indication scheme based on the conflict between the first beam indication scheme and the second beam indication scheme.

[0127] In Example 14, the method according to Example 12 or 13 further includes the base station determining that the second beam indication scheme is not enabled based on a relationship rule between the first beam indication scheme and the second beam indication scheme.

[0128] In Example 15, the method according to any one of Examples 12-14 further includes: sending an indication to the UE to indicate that the first beam indication scheme is enabled.

[0129] In Example 16, the method according to Examples 12-15 further includes the base station indicating the activation of the first beam indication scheme based on the configuration of one or more beam indications.

[0130] In Example 17, the method according to any one of Examples 12-16 further includes the base station indicating the activation of the first beam indication scheme based on the activation of one or more beam indications.

[0131] In Example 18, the method according to any one of Examples 12-17 further includes: the first beam indication scheme includes one of the following: a combined DL and UL TCI status indication scheme, a downlink TCI status indication scheme, an uplink TCI status indication scheme, a spatial relationship information indication scheme, a default PUCCH beam indication scheme, a default SRS beam indication scheme, a default PUSCH beam indication scheme, or a default PDSCH beam indication scheme.

[0132] In Example 19, the method according to any one of Examples 12-18 further includes the second beam indication scheme comprising one of the following: a combined DL and UL TCI status indication scheme, a downlink TCI status indication scheme, an uplink TCI status indication scheme, a spatial relationship information indication scheme, a default PUCCH beam indication scheme, a default SRS beam indication scheme, a default PUSCH beam indication scheme, or a default PDSCH beam indication scheme.

[0133] Example 20 is a device that includes one or more processors and one or more memories in electronic communication with the one or more processors, the one or more memories storing instructions executable by the one or more processors to enable a system or apparatus to implement the method according to any one of Examples 12-19.

[0134] Example 21 is a system or apparatus that includes units for implementing the method or implementing the apparatus according to any one of Examples 12-19.

[0135] Example 22 is a non-transitory computer-readable medium storing instructions executable by one or more processors to enable the one or more processors to implement the method according to any one of Examples 12-19.

[0136] To enable any person skilled in the art to implement the various aspects described herein, the foregoing descriptions have been made around these aspects. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may also apply to other aspects. Therefore, the invention is not limited to the aspects shown herein, but is consistent with the full scope of the invention disclosure, wherein, unless specifically stated otherwise, the use of the singular to modify a component does not mean "one and only one," but can mean "one or more." Terms such as "if," "when," and "at" should be interpreted as "under the condition of," rather than implying a direct temporal relationship or reaction. That is, these phrases (e.g., "when") do not imply immediate action in response to an action or action taken during the occurrence of an action, but simply mean that an action will occur if the condition is met, without requiring a specific or immediate temporal constraint on the occurrence of that action. The term "exemplary" as used herein means "serving as an example, illustration, or description." Any aspect described herein as "exemplary" should not be construed as preferred or superior to other aspects. Unless otherwise specifically stated, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C", "one or more of A, B, or C", "at least one of A, B, and C", "one or more of A, B, and C", and "A, B, C, or any combination thereof" include any combination of A, B, and / or C, which 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 contain one or more members or some members of A, B, or C. All structural and functional equivalents of components throughout the various aspects described in this disclosure are expressly incorporated herein by reference and are intended to be covered by the claims, and such structural and functional equivalents are well known or will be known to those skilled in the art. Furthermore, nothing disclosed herein is intended to be offered to the public, whether or not such disclosure is explicitly stated in the claims. Terms such as “module,” “apparatus,” “element,” “device,” etc., are not substitutes for the word “unit.” Therefore, the constituent elements of a claim should not be interpreted as functional modules unless the constituent element is explicitly described using the term “functional module.”

Claims

1. A method for wireless communication of a user equipment (UE), comprising: Receive an instruction from the base station to indicate the activation of the first beam indication scheme; The first beam indication scheme is activated based on the received indication; Based on enabling the first beam indication scheme, it is determined that the second beam indication scheme is not enabled, wherein the first beam indication scheme and the second beam indication scheme each include one of the following: spatial relationship information indication scheme, default physical uplink control channel (PUCCH) beam indication scheme, default sounding reference signal (SRS) beam indication scheme, default physical uplink shared channel (PUSCH) beam indication scheme, or default physical downlink shared channel (PDSCH) beam indication scheme; and The first beam indication scheme is applied to determine one or more of the uplink (UL) beam or downlink (DL) beam for communication with the base station.

2. The method according to claim 1, wherein, The UE determines not to enable the second beam indication scheme based on the conflict between the first beam indication scheme and the second beam indication scheme.

3. The method according to claim 1, wherein, The UE determines whether to enable the second beam indication scheme based on the relationship rules between the first beam indication scheme and the second beam indication scheme.

4. The method according to claim 1, wherein, The UE determines whether to enable the first beam indication scheme based on the configuration of one or more beam indications.

5. The method according to claim 1, wherein, The UE determines whether to enable the first beam indication scheme based on the activation of one or more beam indications.

6. The method according to claim 1, wherein, The first beam indication scheme further includes one of the following: A combined DL and UL Transport Configuration Indicator (TCI) status indication scheme. Downlink TCI status indication scheme Uplink TCI status indication scheme.

7. The method according to claim 1, wherein, The second beam indication scheme also includes one of the following: A combined DL and UL Transport Configuration Indicator (TCI) status indication scheme. Downlink TCI status indication scheme Uplink TCI status indication scheme.

8. An apparatus for wireless communication for a user equipment (UE), comprising: A unit for receiving from a base station an indication to enable the first beam indication scheme; A unit for determining whether to enable the first beam indication scheme based on the received indication; A unit for determining whether to disable a second beam indication scheme based on enabling the first beam indication scheme, wherein the first beam indication scheme and the second beam indication scheme each include one of the following: a spatial relationship information indication scheme, a default physical uplink control channel (PUCCH) beam indication scheme, a default sounding reference signal (SRS) beam indication scheme, a default physical uplink shared channel (PUSCH) beam indication scheme, or a default physical downlink shared channel (PDSCH) beam indication scheme; and This is used to apply the first beam indication scheme to determine one or more of the uplink (UL) beam or downlink (DL) beam for communicating with the base station.

9. The apparatus according to claim 8, further comprising: A unit for performing the method according to any one of claims 2-7.

10. An apparatus for wireless communication for a user equipment (UE), comprising: Memory; as well as At least one processor coupled to the memory and configured to perform the method according to any one of claims 1-5.

11. A computer-readable medium storing computer-executable code, which, when executed by a processor, causes the processor to perform the method according to any one of claims 1-7.

12. A method for wireless communication for a base station, comprising: Instructing the User Equipment (UE) to enable a first beam indication scheme, wherein enabling the first beam indication scheme also indicates that a second beam indication scheme is not enabled, wherein the first beam indication scheme and the second beam indication scheme each include one of the following: spatial relationship information indication scheme, default physical uplink control channel (PUCCH) beam indication scheme, default sounding reference signal (SRS) beam indication scheme, default physical uplink shared channel (PUSCH) beam indication scheme, or default physical downlink shared channel (PDSCH) beam indication scheme; Send an instruction to the UE to indicate enabling the first beam indication scheme; and The first beam indication scheme is applied to activate one or more of the uplink (UL) beam or downlink (DL) beam for communication with the UE.

13. The method according to claim 12, wherein, Due to the conflict between the first beam indication scheme and the second beam indication scheme, the second beam indication scheme is not enabled.

14. The method according to claim 12, wherein, The base station determines whether to enable the second beam indication scheme based on the relationship rules between the first beam indication scheme and the second beam indication scheme.

15. The method according to claim 12, wherein, The base station indicates the activation of the first beam indication scheme based on the configuration of one or more beam indications.

16. The method according to claim 12, wherein, The base station indicates the activation of the first beam indication scheme based on the activation of one or more beam indications.

17. The method according to claim 12, wherein, The first beam indication scheme further includes one of the following: A combined DL and UL Transport Configuration Indicator (TCI) status indication scheme. Downlink TCI status indication scheme Uplink TCI status indication scheme.

18. The method according to claim 12, wherein, The second beam indication scheme also includes one of the following: A combined DL and UL Transport Configuration Indicator (TCI) status indication scheme. Downlink TCI status indication scheme Uplink TCI status indication scheme.

19. An apparatus for wireless communication for a base station, comprising: A unit for instructing a user equipment (UE) to enable a first beam indication scheme, wherein enabling the first beam indication scheme also indicates that a second beam indication scheme is not enabled, wherein the first beam indication scheme and the second beam indication scheme each include one of the following: spatial relationship information indication scheme, default physical uplink control channel (PUCCH) beam indication scheme, default sounding reference signal (SRS) beam indication scheme, default physical uplink shared channel (PUSCH) beam indication scheme, or default physical downlink shared channel (PDSCH) beam indication scheme; A unit for sending an instruction to the UE indicating the activation of the first beam indication scheme; and A unit for applying the first beam indication scheme to activate one or more of the uplink (UL) beam or downlink (DL) beam for communicating with the UE.

20. The apparatus of claim 19, further comprising: A unit for performing the method according to any one of claims 13-18.

21. An apparatus for wireless communication at a base station, comprising: Memory; as well as At least one processor coupled to the memory and configured to perform the method according to any one of claims 12-18.

22. A computer-readable medium storing computer-executable code, which, when executed by a processor, causes the processor to perform the method according to any one of claims 12-18.

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