Transmission configuration indicator (TCI) for joint downlink / uplink beams

Abstract

The present disclosure provides systems, methods, and apparatuses for transmitting and receiving a transmission configuration indicator (TCI) for joint downlink / uplink beams. A base station (BS) can transmit a TCI indicating one or more reference signals that provide a user equipment (UE) with properties of a beam used by the UE for transmitting data or control information on an uplink and by the UE for receiving data or control information on a downlink. Thus, the UE and the BS can reduce signaling and network overhead by using a single TCI to indicate a quasi co-location (QCL) rule for both the uplink and the downlink.

Description

Technical Field

[0001] In general, various aspects of this disclosure relate to wireless communication, and more specifically, to techniques for transmitting and receiving Transmission Configuration Indicators (TCIs) for joint downlink / uplink beams. Background Technology

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / Improved LTE is an enhancement set of the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP).

[0003] A wireless network may include multiple base stations (BSs) capable of supporting communication for multiple user equipments (UEs). UEs can communicate with base stations (BSs) via downlink (DL) and uplink (UL). DL (or forward link) refers to the communication link from the BS to the UE, while UL (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, an LTE Evolved Node B (eNB), a gNB, an Access Point (AP), a Radio Headend, a Transmit / Receive Point (TRP), a New Radio (NR) BS, or a 5G Node B.

[0004] The above multiple access technologies have been adopted in various telecommunications standards to provide a universal protocol that enables different UEs to communicate at the city, country, region, and even global levels. NR (which can also be referred to as 5G) is an evolution set of the LTE mobile standard released by the 3rd Generation Partnership Project (3GPP). NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving service, utilizing new spectrum, and using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) on DL, using CP-OFDM or (SC-FDM) on UL (or a combination thereof) (e.g., also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)), and supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation, thereby better supporting mobile broadband internet access. Summary of the Invention

[0005] The systems, methods, and apparatuses disclosed herein are all innovative in some respects, but no single aspect is solely responsible for the desired properties disclosed herein.

[0006] One innovative aspect of the subject matter described in this disclosure can be implemented in a wireless communication method performed by a user equipment (UE) device. The method may include: receiving a transmission configuration indicator (TCI) for a beam from a base station (BS), wherein the TCI indicates one or more reference signals providing one or more attributes of the beam; transmitting uplink data or control information to the BS using the beam; and receiving downlink data or control information from the BS using the beam.

[0007] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for a UE used for wireless communication. The apparatus may include: a first interface configured to acquire a beam-specific TCI, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam. The apparatus may include a second interface configured to use the beam to output uplink data or control information. The first interface may also be configured to use the beam to acquire downlink data or control information.

[0008] Another inventive aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium can store one or more instructions for wireless communication. When executed by one or more processors of the UE, the one or more instructions can cause the one or more processors to: receive a beam-specific TCI from the BS, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam; transmit uplink data or control information to the BS using the beam; and receive downlink data or control information from the BS using the beam.

[0009] Another inventive aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication. The apparatus may include: a unit for receiving a beam-specific TCI from a BS, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam; a unit for transmitting uplink data or control information to the BS using the beam; and a unit for receiving downlink data or control information from the BS using the beam.

[0010] One innovative aspect of the subject matter described in this disclosure can be implemented in a wireless communication method performed by a device of a BS. The method may include: transmitting a beam-specific TCI to a UE, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam; receiving uplink data or control information from the UE using the beam; and transmitting downlink data or control information to the UE using the beam.

[0011] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for a base (BS) used for wireless communication. The apparatus may include a first interface configured to output a beam-specific integrated circuit (TCI), wherein the TCI indicates one or more reference signals providing one or more attributes of the beam. The apparatus may include a second interface configured to acquire uplink data or control information using the beam. The first interface may also be configured to output downlink data or control information using the beam.

[0012] Another inventive aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium can store one or more instructions for wireless communication. When executed by one or more processors of the BS, the one or more instructions can cause the one or more processors to: transmit a beam-specific TCI to the UE, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam; receive uplink data or control information from the UE using the beam; and transmit downlink data or control information to the UE using the beam.

[0013] Another inventive aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication. The apparatus may include: a unit for transmitting a beam-specific TCI to a UE, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam; a unit for receiving uplink data or control information from the UE using the beam; and a unit for transmitting downlink data or control information to the UE using the beam.

[0014] One innovative aspect of the subject matter described in this disclosure can be implemented in a wireless communication method performed by a device of a UE. The method may include: receiving communication from a non-serving neighbor cell; and determining parameters associated with the joint downlink and uplink TCI states based on the received communication from the non-serving neighbor cell.

[0015] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for a UE used for wireless communication. The apparatus may include an interface configured to obtain communication from a non-serving neighbor cell. The apparatus may include a processing system configured to determine parameters associated with the joint downlink and uplink TCI states based on the received communication from the non-serving neighbor cell.

[0016] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium can store one or more instructions for wireless communication. When executed by one or more processors of the UE, the one or more instructions can cause the one or more processors to: receive communication from a non-serving neighbor cell; and, based on the received communication from the non-serving neighbor cell, determine parameters associated with the joint downlink and uplink TCI states.

[0017] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication. The apparatus may include: a unit for receiving communication from a non-serving neighbor cell; and a unit for determining parameters associated with the joint downlink and uplink TCI states based on the received communication from the non-serving neighbor cell.

[0018] One innovative aspect of the subject matter described in this disclosure can be implemented in a wireless communication method performed by a device of a UE. The method may include: receiving communication from a non-serving neighbor cell; and determining uplink spatial relationship parameters associated with the uplink TCI state based on the received communication from the non-serving neighbor cell.

[0019] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for a UE used for wireless communication. The apparatus may include an interface configured to obtain communication from a non-serving neighbor cell. The apparatus may include a processing system configured to determine uplink spatial relationship parameters associated with the uplink TCI state based on the received communication from the non-serving neighbor cell.

[0020] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium can store one or more instructions for wireless communication. When executed by one or more processors of the UE, the one or more instructions can cause the one or more processors to: receive communication from a non-serving neighbor cell; and, based on the received communication from the non-serving neighbor cell, determine uplink spatial relationship parameters associated with the uplink TCI state.

[0021] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication. The apparatus may include: a unit for receiving communication from a non-serving neighbor cell; and a unit for determining uplink spatial relationship parameters associated with the uplink TCI state based on the received communication from the non-serving neighbor cell.

[0022] One innovative aspect of the subject matter described in this disclosure can be implemented in a wireless communication method performed by a device of a BS. The method may include: determining parameters associated with joint downlink and uplink TCI states; and transmitting communications via a non-serving neighbor cell to indicate the parameters.

[0023] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for a BS (Base Station) for wireless communication. The apparatus may include a processing system configured to determine parameters associated with the joint downlink and uplink TCI (Transmission Control Index) states. The apparatus may include an interface configured to output communications for transmission to indicate the parameters via non-serving neighbor cells.

[0024] Another inventive aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium can store one or more instructions for wireless communication. When executed by one or more processors of the BS, the one or more instructions can cause the one or more processors to: determine parameters associated with the joint downlink and uplink TCI states; and transmit communications indicating the parameters via a non-serving neighbor cell.

[0025] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication. The apparatus may include: units for determining parameters associated with joint downlink and uplink TCI states; and units for transmitting communications via non-serving neighbor cells to indicate the parameters.

[0026] One innovative aspect of the subject matter described in this disclosure can be implemented in a wireless communication method performed by a device of a BS. The method may include: determining uplink spatial relationship parameters associated with uplink TCI states; and transmitting communications via non-serving neighbor cells to indicate the parameters.

[0027] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for a BS (Base Station) for wireless communication. The apparatus may include a processing system configured to determine uplink spatial relationship parameters associated with uplink TCI (Transmission Control Information) states. The apparatus may include an interface configured to output communication for transmission via a non-serving neighbor cell to indicate the parameters.

[0028] Another innovative aspect of the subject matter described in this disclosure can be implemented in a non-transitory computer-readable medium. The non-transitory computer-readable medium can store one or more instructions for wireless communication. When executed by one or more processors of the BS, the one or more instructions can cause the one or more processors to: determine uplink spatial relation parameters associated with the uplink TCI state; and transmit communication via a non-serving neighbor cell to indicate the parameters.

[0029] Another innovative aspect of the subject matter described in this disclosure can be implemented in an apparatus for wireless communication. The apparatus may include: units for determining uplink spatial relationship parameters associated with uplink TCI states; and units for transmitting communications via non-serving neighbor cells to indicate the parameters.

[0030] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment, or processing systems as fully described herein with reference to the accompanying drawings and as illustrated by the drawings.

[0031] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the following description. Other features, aspects, and advantages will become apparent from the specification, drawings, and claims. Note that relative dimensions in the drawings may not be depicted to scale. Attached Figure Description

[0032] Figure 1 This is a diagram illustrating an example of a wireless network.

[0033] Figure 2 This is a diagram illustrating an example of communication between a base station (BS) and a user equipment (UE) in a wireless network.

[0034] Figure 3 This is a diagram illustrating an example of a beamforming architecture that supports beamforming for millimeter-wave (mmW) communications.

[0035] Figure 4 This is a diagram illustrating an example of using beams for communication between the BS and UE.

[0036] Figure 5 This is a diagram illustrating an example of transmission configuration indicators (TCIs) associated with transmitting and receiving joint downlink / uplink beams.

[0037] Figure 6 This is a diagram illustrating, for example, an example process performed by the UE.

[0038] Figure 7 This is a diagram illustrating, for example, an example process performed by a BS.

[0039] Figure 8-9 This is a block diagram of an example device for wireless communication.

[0040] Figure 10-11 This is a diagram illustrating, for example, an example process performed by the UE.

[0041] Figure 12-13 This is a diagram illustrating, for example, an example process performed by a BS.

[0042] Similar reference numerals and names in the various figures indicate similar elements. Detailed Implementation

[0043] For the purpose of describing the innovative aspects of this disclosure, the following description is directed to certain implementations. However, those skilled in the art will readily recognize that the teachings herein can be applied in a variety of different ways. Some examples in this disclosure are based on wireless and wired local area network (LAN) communications according to the following standards: the Institute of Electrical and Electronics Engineers (IEEE) 802.11 wireless standard, the IEEE 802.3 Ethernet standard, and the IEEE 1901 power line communication (PLC) standard. However, the described implementations can be implemented in any device, system, or network capable of transmitting and receiving radio frequency signals according to any wireless communication standard, including any of the following standards: the IEEE 802.11 standard, Standard, Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Global System for Mobile Communications (GSM), GSM / General Packet Radio Service (GPRS), Enhanced Data GSM Environment (EDGE), Terrestrial Trunking Radio (TETRA), Wideband CDMA (W-CDMA), Evolved Data Optimized (EV-DO), 1xEV-DO, EV-DO Version A, EV-DO Version B, High-Speed ​​Packet Access (HSPA), High-Speed ​​Downlink Packet Access (HSDPA), High-Speed ​​Uplink Packet Access (HSUPA), Evolved High-Speed ​​Packet Access (HSPA+), Long Term Evolution (LTE), AMPS, or other known signals used for communication in wireless, cellular, or Internet of Things (IoT) environments, such as systems utilizing 3G, 4G, or 5G technologies or further implementations thereof.

[0044] In some situations, a User Equipment (UE) can use a Transport Configuration Indicator (TCI) (such as a TCI state as defined in the 3GPP specification) or another similar data structure to decode downlink transmissions from a Base Station (BS). The TCI can indicate one or more Quasi-Co-location (QCL) rules, where the rules associate reference signals (e.g., synchronization signals such as Synchronization Signal Blocks (SSBs); Channel State Information (CSI) Reference Signals (CSI-RS); Position Reference Signals (PRS); or other reference signals) with associated channel attributes (e.g., Doppler shift; Doppler spread; average delay; delay spread; one or more spatial parameters such as spatial filters; or other attributes). Such QCL rules can include data structures such as QCL-TypeA, QCL-TypeB, QCL-TypeC, or QCL-TypeD as defined by the 3GPP specification.

[0045] Some standards (such as 3GPP specifications) define TCIs for downlink communication from the BS to the UE. However, the BS and UE typically manage uplink communication separately, which requires additional processing time as well as signaling and network overhead. Furthermore, some standards (such as 3GPP specifications) define TCIs with no more than two QCL rules.

[0046] As described herein, the BS can transmit a TCI, which indicates one or more reference signals that provide attributes of a common beam for the UE. A beam can be "common" when it is used by the UE to transmit data or control information on the uplink and to receive data or control messages on the downlink. The TCI state indicating the attributes of the common beam can be referred to as the combined downlink and uplink TCI state.

[0047] Specific implementations of the subject matter described in this disclosure can be implemented to achieve one or more of the following potential advantages. Therefore, the UE and BS can reduce signaling and network overhead by using a single TCI (also known as a joint TCI) to indicate QCL rules for both uplink and downlink. The joint TCI enables a unified TCI framework that simplifies beam management not only for downlink and uplink channels but also for data and control channels in 3GPP New Radio (NR) systems.

[0048] Furthermore, in some aspects, the joint TCI can indicate more than two QCL rules. For example, the joint TCI can indicate three or more QCL rules to provide attributes for a common beam used for uplink and downlink. Alternatively, the joint TCI can indicate three or more QCL rules to provide attributes for multiple common beams, each for uplink and downlink. Therefore, the UE and BS can further reduce signaling and network overhead.

[0049] Additionally, in some aspects, the UE can use joint TCI to determine information about communications with one or more BSs, such as in inter-cell mobility scenarios. In a joint TCI inter-cell mobility scenario, the BS can be a non-serving neighbor cell BS of the UE, and the joint TCI can indicate the common beam applicable to both downlink and uplink communications on the non-serving neighbor cell. Joint TCI can improve the inter-cell mobility process. For example, the BS can reduce latency during inter-cell handover by providing joint TCI status for neighbor cells before handover.

[0050] Figure 1 This diagram illustrates an example of a wireless network 100. Wireless network 100 can be a 5G (NR) network, an LTE network, or another type of network, or may include elements of a 5G (NR) network, an LTE network, or another type of network. Wireless network 100 may include one or more base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is a network entity that communicates with a UE and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), Access Point, or Transmitter / Receiver Point (TRP). Each BS may provide communication coverage for a specific geographic area. In 3GPP, depending on the context in which the term "cell" is used, the term "cell" may refer to the coverage area of ​​a BS, a BS subsystem serving that coverage area, or a combination thereof.

[0051] A BS can provide communication coverage for macrocells, picocells, femtocells, another type of cell, or a combination thereof. A macrocell can cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UEs with a service subscription. A picocell can cover a relatively small geographic area and allow unrestricted access by UEs with a service subscription. A femtocell can cover a relatively small geographic area (e.g., a residential area) and allow restricted access by UEs associated with that femtocell (e.g., UEs in a closed user group (CSG)). A BS used for macrocells can be called a macro BS. A BS used for picocells can be called a pico BS. A BS used for femtocells can be called a femto BS or a home BS. Figure 1 In the example shown, BS110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5G NB,” and “cell” are used interchangeably herein.

[0052] In some examples, the cell may not be stationary, and the geographical area of ​​the cell may move depending on the location of the mobile BS. In some examples, BSs may interconnect with each other and with one or more other BSs or network nodes (not shown) in the wireless network 100 using any suitable transport network through various types of backhaul interfaces (such as direct physical connections, virtual networks, or combinations thereof).

[0053] Wireless network 100 may include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE capable of relaying transmissions to other UEs. Figure 1 In the example shown, relay BS 110d can communicate with macro BS 110a and UE 120d to facilitate communication between macro BS 110a and UE 120d. A relay BS can also be referred to as a relay station, relay base station, repeater, etc.

[0054] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs can have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs can have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs can have lower transmit power levels (e.g., 0.1 to 2 watts).

[0055] Network controller 130 can be coupled to a group of base stations (BSs) and provide coordination and control for these BSs. Network controller 130 can communicate with these BSs via backhaul. For example, these BSs can also communicate with each other directly or indirectly via wireless or wired backhaul.

[0056] Multiple UEs 120 (e.g., UE 120a, UE 120b, UE 120c, etc.) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, user unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biosensor / device, a wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device or a satellite radio unit), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0057] Some UEs can be considered Machine-Type Communication (MTC) or Evolved or Enhanced Machine-Type Communication (eMTC) UEs. For example, MTC UEs and eMTC UEs include robots, drones, remote devices, sensors, meters, monitors, location tags, etc., capable of communicating with a base station, another device (e.g., a remote device), or some other entity. Wireless nodes can provide connectivity to or from a network (e.g., a wide area network such as the Internet or a cellular network) via wired or wireless communication links. Some UEs can be considered Internet of Things (IoT) devices or can be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs can be considered Customer Premises Equipment (CPE). UE 120 can be included in a housing that houses the components of UE 120 (e.g., processor components, memory components, or other components). In some examples, the processor components and memory components can be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) can be operatively coupled, communicatively coupled, electrically coupled, or electronically coupled.

[0058] Typically, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, air interface, etc. A frequency can also be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0059] In some respects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary for communication with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or similar protocols), mesh networks, or similar networks, or combinations thereof. In such examples, UE 120 may perform scheduling operations, resource selection operations, and other operations described elsewhere herein as being performed by base station 110.

[0060] Devices in the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, or channels based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating band with a first frequency range (FR1) (spanning from 410 MHz to 7.125 GHz). As another example, devices in the wireless network 100 can communicate using an operating band with a second frequency range (FR2) (spanning from 24.25 GHz to 52.6 GHz). The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as the “sub-6 GHz” band. Similarly, FR2 is often referred to as the “millimeter wave” band, although it differs from the extremely high frequency (EHF) band (30 GHz–300 GHz) designated as a “millimeter wave” band by the International Telecommunication Union (ITU). Therefore, unless otherwise explicitly stated, it should be understood that the term "sub-6GHz" can broadly refer to frequencies less than 6GHz, frequencies within FR1, intermediate frequency (IF) frequencies (e.g., greater than 7.125GHz), or combinations thereof. Similarly, unless otherwise explicitly stated, it should be understood that the term "millimeter wave" can broadly refer to frequencies within the EHF band, frequencies within FR2, intermediate frequency (e.g., less than 24.25GHz), or combinations thereof. It is anticipated that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein can be applied to these modified frequency ranges.

[0061] Figure 2 This is a diagram illustrating an example 200 of communication between a base station 110 and a UE 120 in a wireless network 100. The base station 110 may be equipped with T antennas 234a to 234t, and the UE 120 may be equipped with R antennas 252a to 252r, wherein typically T ≥ 1 and R ≥ 1.

[0062] At base station 110, transmit processor 220 can receive data for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based on the channel quality index (CQI) received from each UE, process the data for each UE (e.g., coding and modulation) based on the selected MCS, and provide data symbols for all UEs. Transmit processor 220 can also process system information and control information (e.g., CQI requests, grants, upper-layer signaling, etc.) and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals and synchronization signals. Transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding, if applicable) on these data symbols, control symbols, overhead symbols, or reference symbols, and provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 can process the corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 can also process (e.g., convert to an analog signal, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted via T antennas 234a to 234t respectively.

[0063] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 or other base stations and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can adjust (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM, etc.) to obtain the received symbols. MIMO detector 256 can obtain the received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide the detected symbols. Receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to data sink 260, and provide decoded control information and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine the Received Reference Signal Power (RSRP), Received Signal Strength Indicator (RSSI), Received Reference Signal Quality (RSRQ), Channel Quality Indicator (CQI), and so on. In some respects, one or more components of the UE 120 may be housed within a housing.

[0064] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. For example, network controller 130 may include one or more devices in the core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0065] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). Transmit processor 264 can also generate reference symbols for one or more reference signals. Symbols from transmit processor 264 can be pre-coded (if applicable) by TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to base station 110. In some aspects, UE 120 includes a transceiver. The transceiver can include any combination of antenna 252, modulator 254, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, or TX MIMO processor 266. The processor (e.g., controller / processor 280) and memory 282 may use a transceiver to perform aspects of any of the processes described herein.

[0066] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and can communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 for scheduling one or more UEs 120 for downlink communication, uplink communication, or a combination thereof. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antenna 234, modulator 232, demodulator 232, MIMO detector 236, receiver processor 238, transmitter processor 220, or TX MIMO processor 230. The processor (e.g., controller / processor 240) and memory 242 may use a transceiver to perform aspects of any of the processes described herein.

[0067] In some implementations, the controller / processor 280 may be a component of a processing system. A processing system can generally refer to a system or a series of machines or components that receive and process inputs to produce a set of outputs (which can be passed to, for example, other systems or components of UE 120). For example, the processing system of UE 120 can refer to a system that includes various other components or sub-components of UE 120.

[0068] The processing system of UE 120 can interface with other components of UE 120 and can process information received from other components (such as inputs or signals), output information to other components, etc. For example, the chip or modem of UE 120 may include a processing system, a first interface for receiving or acquiring information, and a second interface for outputting, transmitting, or providing information. In some cases, the first interface may refer to the interface between the processing system of the chip or modem and the receiver, allowing UE 120 to receive information or signal input and to transmit information to the processing system. In some cases, the second interface may refer to the interface between the processing system of the chip or modem and the transmitter, allowing UE 120 to transmit information output from the chip or modem. Those skilled in the art will readily recognize that the second interface can also acquire or receive information or signal input, and the first interface can also output, transmit, or provide information.

[0069] In some implementations, the controller / processor 240 may be a component of a processing system. A processing system can generally refer to a system or a series of machines or components that receive and process inputs to produce a set of outputs (which can be passed to, for example, other systems or components of base station 110). For example, the processing system of base station 110 can refer to a system that includes various other components or sub-components of base station 110.

[0070] The processing system of base station 110 can interface with other components of base station 110 and can process information received from other components (e.g., input or signals), output information to other components, etc. For example, the chip or modem of base station 110 may include a processing system, a first interface for receiving or acquiring information, and a second interface for outputting, transmitting, or providing information. In some cases, the first interface may refer to the interface between the processing system of the chip or modem and a receiver, enabling base station 110 to receive information or signal input and to transmit that information to the processing system. In some cases, the second interface may refer to the interface between the processing system of the chip or modem and a transmitter, enabling base station 110 to transmit information output from the chip or modem. Those skilled in the art will readily recognize that the second interface can also acquire or receive information or signal input, and the first interface can also output, transmit, or provide information.

[0071] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120, or Figure 2 Any other component may perform one or more techniques associated with transmitting and receiving transmission configuration indicators for joint downlink / uplink beams, as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, or... Figure 2 Any other component (or combination of components) can perform or direct, for example Figure 6 Process 600 Figure 7 Process 700 Figure 10 Process 1000 Figure 11 Process 1100 Figure 12 Process 1200 Figure 13 The operation of process 1300 or other processes as described herein. Memory 242 and memory 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, memory 242 and memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code or program code) for wireless communication. For example, one or more instructions, when executed by one or more processors of base station 110 or UE 120 (e.g., directly or after compilation, translation, or interpretation), may cause one or more processors, UE 120, or base station 110 to perform or direct, for example... Figure 6 Process 600 Figure 7 Process 700 Figure 10 Process 1000 Figure 11 Process 1100 Figure 12 Process 1200 Figure 13 The operation of process 1300 or other processes as described in this document.

[0072] In some aspects, UE (e.g., UE 120 or Figure 8 The device 800 includes: a means for receiving signals from a BS (such as BS 110 or BS 110). Figure 9The apparatus 900) includes a unit for receiving a TCI for a beam, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam; a unit for transmitting uplink data or control information to the BS using the beam; or a unit for receiving downlink data or control information from the BS using the beam. Units for the UE to perform the operations described herein may include, for example, a transmit processor 220, a TX MIMO processor 230, a modulator 232, an antenna 234, a demodulator 232, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246; or an antenna 252, a demodulator 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, a TX MIMO processor 266, a modulator 254, a controller / processor 280, or a memory 282.

[0073] In some respects, BS (e.g., BS 110 or Figure 9 The device 900 includes: a means for sending data to a UE (e.g., UE 120 or...). Figure 8 The apparatus 800) includes a unit for transmitting a TCI for a beam, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam; a unit for receiving uplink data or control information from the UE using the beam; or a unit for transmitting downlink data or control information to the UE using the beam. Units for the base station to perform the operations described herein may include, for example, a transmit processor 220, a TX MIMO processor 230, a modulator 232, an antenna 234, a demodulator 232, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246; or an antenna 252, a demodulator 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, a TX MIMO processor 266, a modulator 254, a controller / processor 280, or a memory 282.

[0074] Although Figure 2 The blocks in the diagram are shown as different components, but the functions described above with respect to these blocks can be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to the transmit processor 264, the receive processor 258, the TX MIMO processor 266, or another processor can be executed by the controller / processor 280 or under the control of the controller / processor 260.

[0075] Figure 3This is a diagram illustrating an example beamforming architecture 300 supporting beamforming for millimeter-wave (mmW) communications. In some aspects, architecture 300 can implement various aspects of wireless network 100. In some aspects, as described herein, architecture 300 can be implemented in a transmitting device (e.g., a first wireless communication device, UE, or base station) or a receiving device (e.g., a second wireless communication device, UE, or BS).

[0076] In summary, Figure 3 This is a diagram illustrating example hardware components of a wireless communication device according to certain aspects of this disclosure. The components shown may include those that can be used for antenna element selection or for beamforming for transmission of wireless signals. Many architectures exist for antenna element selection and phase shifting; only one example is shown here. Architecture 300 includes a modem (modulator / demodulator) 302, a digital-to-analog converter (DAC) 304, a first mixer 306, a second mixer 308, and a splitter 310. Architecture 300 also includes a plurality of first amplifiers 312, a plurality of phase shifters 314, a plurality of second amplifiers 316, and an antenna array 318 including a plurality of antenna elements 320.

[0077] Transmission lines or other waveguides, wires, traces, or similar connections are shown to connect the various components, illustrating how the signal to be transmitted propagates between the components. Reference numerals 322, 324, 326, and 328 indicate areas in architecture 300 where different types of signals propagate or are processed. Specifically, reference numeral 322 indicates an area where digital baseband signals propagate or are processed, reference numeral 324 indicates an area where analog baseband signals propagate or are processed, reference numeral 326 indicates an area where analog intermediate frequency (IF) signals propagate or are processed, and reference numeral 328 indicates an area where analog radio frequency (RF) signals propagate or are processed. The architecture also includes a local oscillator A 330, a local oscillator B 332, and a controller / processor 334. In some aspects, the controller / processor 334 corresponds to the combination of the above. Figure 2 The described base station controller / processor 240 or a combination of the above. Figure 2 The controller / controller 280 of the UE is described.

[0078] Each antenna element 320 may include one or more sub-elements for radiating or receiving RF signals. For example, a single antenna element 320 may include a first sub-element cross-polarized with a second sub-element, which can be used to independently transmit the cross-polarized signal. Antenna elements 320 may include patch antennas, dipole antennas, or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern. The spacing between antenna elements 320 may allow signals with desired wavelengths emitted individually by antenna elements 320 to interact or interfere (e.g., to form a desired beam). For example, given a desired wavelength or frequency range, the spacing may provide a quarter wavelength, half wavelength, or other fraction of the wavelength of the spacing between adjacent antenna elements 320 to allow interaction or interference of signals emitted by individual antenna elements 320 within that desired range.

[0079] Modem 302 processes and generates digital baseband signals and can also control the operation of DAC 304, first mixer 306 and second mixer 308, splitter 310, first amplifier 312, phase shifter 314 or second amplifier 316 to transmit signals via one or more antenna elements 320. Modem 302 can process signals and control operations according to communication standards such as those discussed herein. DAC 304 can convert digital baseband signals received from (and to be transmitted) by modem 302 into analog baseband signals. First mixer 306 uses local oscillator A330 to upconvert the analog baseband signal to an analog IF signal within the IF. For example, first mixer 306 can mix the signal with an oscillation signal generated by local oscillator A330 to "shift" the baseband analog signal to the IF. In some cases, some processing or filtering (not shown) may be performed at the IF. Second mixer 308 uses local oscillator B 332 to upconvert the analog IF signal to an analog RF signal. Similar to the first mixer, the second mixer 308 can mix the signal with an oscillating signal generated by the local oscillator B 332 to "shift" the IF analog signal to the frequency of the RF or transmitted / received signal. The modem 302 or controller / processor 334 can adjust the frequency of the local oscillator A 330 or local oscillator B 332 to produce the desired IF or RF frequency and use it to facilitate the processing and transmission of signals within the desired bandwidth.

[0080] In the illustrated architecture 300, the signal up-converted by the second mixer 308 is split or replicated into multiple signals by the splitter 310. The splitter 310 in architecture 300 separates the RF signal into multiple identical or nearly identical RF signals. In other examples, any type of signal (including baseband digital, baseband analog, or IF analog signals) can be split. Each of these signals can correspond to an antenna element 320, and the signal is propagated and processed by amplifiers 312 and 316, phase shifters 314, or other elements corresponding to the respective antenna element 320, to be provided to and transmitted by the corresponding antenna element 320 of the antenna array 318. In one example, the splitter 310 can be an active splitter connected to a power source and providing some gain, such that the RF signal leaving the splitter 310 is at a power level equal to or greater than the signal entering the splitter 310. In another example, the splitter 310 is a passive splitter not connected to a power source, and the RF signal leaving the splitter 310 can be at a lower power level than the RF signal entering the splitter 310.

[0081] After separation by splitter 310, the resulting RF signal can enter an amplifier (such as first amplifier 312) or a phase shifter 314 corresponding to antenna element 320. First amplifier 312 and second amplifier 316 are shown in dashed lines because in some aspects, one or both of the first and second amplifiers may not be necessary. In some aspects, both first amplifier 312 and second amplifier 316 are present. In some aspects, neither first amplifier 312 nor second amplifier 316 is present. In some aspects, one of the two amplifiers 312 and 316 is present, but the other is not. For example, if splitter 310 is an active splitter, first amplifier 312 may not be used. As another example, if phase shifter 314 is an active phase shifter that can provide gain, second amplifier 316 may not be used.

[0082] Amplifiers 312 and 316 can provide desired positive or negative gain levels. Positive gain (positive dB) can be used to increase the amplitude of a signal for radiation by a particular antenna element 320. Negative gain (negative dB) can be used to decrease the amplitude of a signal or suppress radiation of a signal by a particular antenna element. Each of amplifiers 312 and 316 can be controlled independently (e.g., by modem 302 or controller / processor 334) to provide independent control of the gain of each antenna element 320. For example, modem 302 or controller / processor 334 may have at least one control line connected to each of splitter 310, first amplifier 312, phase shifter 314, or second amplifier 316, and at least one control line can be used to configure the gain to provide the desired amount of gain for each component and therefore each antenna element 320.

[0083] Phase shifter 314 can provide a configurable phase shift or phase offset to the corresponding RF signal to be transmitted. Phase shifter 314 can be a passive phase shifter that is not directly connected to a power supply. Passive phase shifters may introduce some insertion loss. Second amplifier 316 can boost the signal to compensate for the insertion loss. Phase shifter 314 can also be an active phase shifter connected to a power supply, such that an active phase shifter provides a certain amount of gain or prevents insertion loss. Each phase shifter 314 is configured independently, meaning that each phase shifter can be configured independently to provide the desired amount of phase shift, the same amount of phase shift, or some other configuration. Modem 302 or controller / processor 334 may have at least one control line connected to each phase shifter 314, and at least one control line can be used to configure the phase shifter 314 to provide a desired amount of phase shift or phase offset between antenna elements 320.

[0084] In the illustrated architecture 300, the RF signal received by antenna element 320 is provided to one or more first amplifiers 356 to enhance signal strength. The first amplifiers 356 can be connected to the same antenna array 318 (e.g., for time division duplex (TDD) operation). The first amplifiers 356 can also be connected to different antenna arrays 318. The enhanced RF signal is input to one or more phase shifters 354 to provide a configurable phase shift or phase offset for the corresponding received RF signal, thereby enabling reception via one or more Rx beams. The phase shifters 354 can be active or passive phase shifters. The settings of the phase shifters 354 are independent, meaning that each phase shifter can be independently configured to provide the desired amount of phase shift, the same amount of phase shift, or some other configuration. The modem 302 or controller / processor 334 may have at least one control line connected to each phase shifter 354, and the at least one control line may be used to configure the phase shifter 354 to provide a desired amount of phase shift or phase offset between antenna elements 320, thereby enabling reception via one or more Rx beams.

[0085] The output of phase shifter 354 can be input to one or more second amplifiers 352 for signal amplification of the phase-shifted received RF signal. Second amplifiers 352 can be individually configured to provide a configured gain amount. Second amplifiers 352 can be individually configured to provide a gain amount to ensure that signals input to combiner 350 have the same amplitude. Amplifiers 352 and 356 are shown in dashed lines because they may not be necessary in some respects. In some respects, both amplifiers 352 and 356 are present. In another respect, neither amplifier 352 nor amplifier 356 is present. In still other respects, one of amplifiers 352 and 356 is present, but the other is not.

[0086] In the illustrated architecture 300, the signals output from phase shifter 354 (via amplifier 352 (when present)) are combined in combiner 350. Combiner 350 in architecture 300 combines RF signals into a signal. Combiner 350 can be a passive combiner (e.g., not connected to a power supply), which may result in some insertion loss. Combiner 350 can be an active combiner (e.g., connected to a power supply), which may result in some signal gain. When combiner 350 is an active combiner, it can provide a different (e.g., configurable) amount of gain for each input signal, such that the input signals have the same amplitude when combined. When combiner 350 is an active combiner, combiner 350 may not require a second amplifier 352, because the active combiner can provide signal amplification.

[0087] The output of combiner 350 is input to mixers 348 and 346. Mixers 348 and 346 typically use inputs from local oscillators 372 and 370, respectively, to down-convert the received RF signal to generate an intermediate or baseband signal carrying encoded and modulated information. The outputs of mixers 348 and 346 are input to an analog-to-digital converter (ADC) 344 to convert it into an analog signal. The analog signal output from ADC 344 is input to modem 302 for baseband processing, such as decoding, deinterleaving, or similar operations.

[0088] Architecture 300 is given by way of example only to illustrate an architecture used for transmitting or receiving signals. In some cases, architecture 300, or each part of architecture 300, may be repeated multiple times within the architecture to accommodate or provide any number of RF chains, antenna elements, or antenna panels. Furthermore, many alternative architectures are possible and contemplated. For example, although only a single antenna array 318 is shown, two, three, or more antenna arrays may be included, each having its own corresponding amplifier, phase shifter, splitter, mixer, DAC, ADC, or modem, one or more of these. For example, a single UE may include two, four, or more antenna arrays for transmitting or receiving signals at different physical locations on the UE or in different directions.

[0089] Furthermore, mixers, splitters, amplifiers, phase shifters, and other components can be located in different signal type regions within different implementation architectures (e.g., indicated by different reference numerals in figures 322, 324, 326, and 328). For example, in different examples, the signal to be transmitted can be split into multiple signals at analog RF, analog IF, analog baseband, or digital baseband frequencies. Similarly, amplification or phase shifting can occur at different frequencies. For example, in some aspects, one or more of splitters 310, amplifiers 312 and 316, or phase shifters 314 can be located between DAC 304 and the first mixer 306, or between the first mixer 306 and the second mixer 308. In one example, the functionality of one or more of these components can be combined into a single component. For example, phase shifter 314 can perform amplification to include or replace the first amplifier 312 or the second amplifier 316. By another example, phase shifting can be implemented by the second mixer 308 to eliminate the need for a separate phase shifter 314. This technique is sometimes referred to as local oscillator (LO) phase shifting. In some aspects of this configuration, multiple IF-to-RF mixers may exist within the second mixer 308 (e.g., for each antenna element chain), and the local oscillator B 332 may provide a different local oscillator signal (with different phase shifts) to each IF-to-RF mixer.

[0090] Modem 302 or controller / processor 334 can control one or more of other components 304 to 372 to select one or more antenna elements 320 or form a beam for transmitting one or more signals. For example, antenna element 320 can be individually selected or deselected for signal (or multiple signals) transmission by controlling the amplitude of one or more corresponding amplifiers (e.g., first amplifier 312 or second amplifier 316). Beamforming involves generating a beam using multiple signals on different antenna elements, wherein one or more or all of the multiple signals are phase-shifted relative to each other. The formed beam can carry reference signals or information from the physical layer or higher. As each of the multiple signals is radiated from the corresponding antenna element 320, the radiated signals interact, interfere (constructive interference and destructive interference), and amplify each other to form the final beam. Shape (e.g., amplitude, width, or sidelobe presence) and orientation (e.g., the angle of the beam relative to the surface of the antenna array 318) can be dynamically controlled by modifying the phase shift or phase offset of the multiple signals imparted by phase shifter 314 relative to each other and the amplitude of the multiple signals imparted by amplifiers 312 and 316 relative to each other. The controller / processor 334 may be partially or wholly located within one or more other components of architecture 300. For example, in some aspects, the controller / processor 334 may be located within modem 302.

[0091] Figure 4 This is a diagram illustrating example 400 of using a beam for communication between the BS and the UE. (See diagram 400) Figure 4 As shown, base station 110 and UE120 can communicate with each other.

[0092] Base station 110 can transmit signals to UE 120 located within its coverage area. Base station 110 and UE 120 can be configured for beamforming communication, wherein base station 110 can use a directional BS transmit beam to transmit in the direction of UE 120, and UE 120 can use a directional UE receive beam to receive the transmission. Each BS transmit beam can have an associated beam ID, beam direction, or beam symbol, etc. Base station 110 can transmit downlink communication via one or more BS transmit beams 405.

[0093] UE 120 may attempt to receive downlink transmissions via one or more UE receive beams 410, which can be configured with different beamforming parameters at the UE 120's receive circuitry. UE 120 may identify specific BS transmit beams 405 (shown as BS transmit beam 405-A) and specific UE receive beams 410 (shown as UE receive beam 410-A) that provide relatively advantageous performance (e.g., optimal channel quality among different measured combinations of BS transmit beams 405 and UE receive beams 410). In some examples, UE 120 may send an indication of which BS transmit beam 405 UE 120 identifies as the preferred BS transmit beam, which base station 110 may select to transmit to UE 120. Therefore, UE 120 can acquire and maintain a beam-to-link (BPL) with base station 110 for downlink communication (e.g., a combination of BS transmit beam 405-A and UE receive beam 410-A), which can be further refined and maintained according to one or more established beam refinement processes.

[0094] Downlink beams (such as BS transmit beam 405 or UE receive beam 410) can be associated with a TCI state. The TCI state can indicate the directivity or characteristics of the downlink beam, such as one or more QCL characteristics of the downlink beam. QCL attributes can include, for example, Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameters, etc. In some examples, each BS transmit beam 405 can be associated with an SSB, and the UE 120 can indicate a preferred BS transmit beam 405 by transmitting uplink transmissions in the resources of the SSB associated with the preferred BS transmit beam 405. A particular SSB can have an associated TCI state (e.g., for antenna port or for beamforming). In some examples, the base station 110 can indicate the downlink BS transmit beam 405 based on antenna port QCL attributes that can be indicated by the TCI state. The TCI state can be associated with a downlink reference signal set (e.g., SSB and aperiodic, periodic, or semi-persistent CSI-RS) for different QCL types (e.g., QCL types for different combinations of Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameters, etc.). In the case where the QCL type indicates spatial reception parameters, the QCL type can correspond to the analog receive beamforming parameters of the UE receive beam 410 at UE 120. Therefore, based on the base station 110 indicating the BS transmit beam 405 via the TCI indication, UE 120 can select the corresponding UE receive beam 410 from the BPL set.

[0095] Base station 110 can maintain a set of active TCI states for downlink shared channel transmission and a set of active TCI states for downlink control channel transmission. The set of active TCI states for downlink shared channel transmission can correspond to the beam used by base station 110 for downlink transmission on the physical downlink shared channel (PDSCH). The set of active TCI states for downlink control channel communication can correspond to the beam used by base station 110 for downlink transmission on the physical downlink control channel (PDCCH) or in the control resource set (CORESET). UE 120 can also maintain a set of active TCI states for receiving downlink shared channel transmission and CORESET transmission. If a TCI state is activated for UE 120, UE 120 can have one or more antenna configurations based on the TCI state, and UE 120 may not need to reconfigure the antennas or antenna weighting configuration. In some examples, the set of active TCI states for UE 120 (e.g., active PDSCH TCI state and active CORESET TCI state) can be configured via configuration messages such as Radio Resource Control (RRC) messages.

[0096] Similarly, for uplink communication, UE 120 can use a directional UE transmit beam to transmit in the direction of base station 110, and base station 110 can use a directional BS receive beam to receive the transmission. Each UE transmit beam can have an associated beam ID, beam direction, or beam symbol, etc. UE 120 can transmit uplink communication via one or more UE transmit beams 415.

[0097] Base station 110 can receive uplink transmissions via one or more BS receive beams 420. Base station 110 can identify specific UE transmit beams 415 (shown as UE transmit beam 415-A) and specific BS receive beams 420 (shown as BS receive beam 420-A) that provide relatively advantageous performance (e.g., optimal channel quality among different measured combinations of UE transmit beams 415 and BS receive beams 420). In some examples, base station 110 can send an indication of which UE transmit beam 415 base station 110 identifies as the preferred UE transmit beam, which base station 110 can select for transmissions from UE 120. Therefore, UE 120 and base station 110 can acquire and maintain a BPL (e.g., a combination of UE transmit beam 415-A and BS receive beam 420-A) for uplink communication, which can be further refined and maintained according to one or more established beam refinement processes. Uplink beams (such as UE transmit beam 415 or BS receive beam 420) can be associated with spatial relationships. Spatial relationships can indicate the directionality or characteristics of the uplink beams (similar to one or more QCL characteristics), as described above.

[0098] Figure 5 This is a diagram illustrating example 500 associated with transmitting and receiving transmission configuration indicators for combined downlink / uplink beams. (See diagram for example.) Figure 5 As shown, BS 110 and UE 120 can, for example, be connected via... Figure 1 The BS 110 and UE 120 communicate with each other via the wireless network 100. The BS 110 can send data or control information to the UE 120 via the downlink, and the UE 120 can send data or control information to the BS 110 via the uplink.

[0099] As indicated by reference numeral 505, BS 110 can transmit a beam-specific TCI, which UE 120 can receive. The TCI indicates one or more reference signals providing one or more attributes of the beam. For example, BS 110 can transmit a TCI state data structure as defined by 3GPP specifications or other similar data structures, which UE 120 can receive. The beam can be a common beam, allowing UE 120 to use the beam to receive downlink data or control information and to transmit uplink data or control information (also referred to as a joint beam or joint UL / DL beam).

[0100] In some aspects, the TCI may include an identifier (ID). For example, the ID may be an alphanumeric, hexadecimal, or other data type that includes information identifying the TCI. In some aspects, the identifier may be in a field used for common beam configuration. Alternatively, the identifier may be in a field shared between common beam configuration, downlink beam configuration, and uplink beam configuration. For example, the identifier may be included in the tci-StateId field or other similar data fields defined by 3GPP specifications.

[0101] One or more reference signals indicated by the TCI may include synchronization signals (e.g., SSB), CSI-RS, probe reference signals (SRS), positioning reference signals (PRS), physical random access channels (PRACH), demodulation reference signals (DMRS), or combinations thereof. DMRS may include DMRS for PDSCH, PDCCH, physical uplink shared channel (PUSCH), physical uplink control channel (PUCCH), or other similar channels. In some aspects, UE 120 may receive one or more reference signals in a non-serving neighbor cell. For example, UE 120 may receive reference signals that provide downlink QCL rules or uplink spatial relationships associated with the joint downlink and uplink TCI. Alternatively or additionally, UE 120 may receive reference signals that provide uplink spatial relationship information associated with the uplink TCI state. The uplink spatial relationship can provide spatial transmission filter parameters for transmissions to UE 120.

[0102] One or more reference signals can provide one or more properties of the beam through one or more QCL rules. For example, TCI may include one or more QCL-Info data structures (such as those defined by 3GPP specifications) or other similar data structures that define QCL rules. QCL rules can indicate one or more properties provided by one or more reference signals.

[0103] One or more properties of a beam can be spatial, temporal, or related to the physical properties of the beam. For example, one or more properties may include Doppler shift (e.g., when the QCL rule is a QCL-Type A, QCL-Type B, or QCL-Type C assumption), Doppler spread (e.g., when the QCL rule is a QCL-Type A or QCL-Type B assumption), average delay (e.g., when the QCL rule is a QCL-Type A or QCL-Type C assumption), delay spread (e.g., when the QCL rule is a QCL-Type A assumption), spatial reception filter (e.g., when the QCL rule is a QCL-Type D assumption), spatial relation information for transmission, or combinations thereof.

[0104] In some aspects, at least one of one or more reference signals provides at least two spatial properties of the beam. For example, the reference signal may provide spatial receiver filtering (despite the QCL-TypeD assumption) and spatial relational information for transmission. In another example, the reference signal may provide Doppler shift, Doppler spread, average delay, or delay spread for uplink and downlink communication on the beam.

[0105] In some respects, a TCI can indicate multiple beams. For example, a TCI can indicate multiple sets corresponding to multiple beams, each set having one or more reference signals. Therefore, a beam can be indicated using one or more QCL-Info data structures, such as those defined in the 3GPP specification, or other similar data structures, that define QCL rules for each beam. Thus, a TCI transmitted by BS 110 can be larger than a TCI state data structure as defined in the 3GPP specification.

[0106] In some aspects, the TCI may also indicate at least one cell identifier associated with at least one of one or more reference signals. The TCI may include cell data variables as defined by 3GPP specifications or other similar data variables. For example, the TCI may indicate a 5-bit serving cell identifier to identify one of the serving cells configured in carrier aggregation for UE 120, on which one or more reference signals indicated in the TCI reside. In some aspects, UE 120 may receive the TCI from the current serving cell, and the TCI may indicate one or more reference signals in a non-serving neighbor cell. The TCI may also indicate the cell identifier of a non-serving neighbor cell associated with one or more reference signals. In some aspects, the cell identifier of a non-serving neighbor cell may be a Physical Cell Identifier (PCI ID), a specific cell ID, an associated SSB set ID, or another identifier associated with the non-serving neighbor cell. The PCI ID of a non-serving neighbor cell in the TCI state may be a complete ID, such as a 10-bit PCI ID as defined in 3GPP specifications. Alternatively, the PCI ID of a non-serving neighbor cell in the TCI state can also be a local ID, such as a local 2-bit ID within a set of four PCIs associated with the four non-serving neighbor cells configured for UE 120.

[0107] In some aspects, cell data variables can be indicated for more than one QCL rule (e.g., in more than one QCL-Info data structure). As described elsewhere herein, at least one serving cell identifier associated with at least one of one or more reference signals can be used for inter-Radio Access Technology (RAT) mobility or inter-cell mobility. In some aspects, only some QCL rules (e.g., QCL-TypeC assumption or QCL-TypeD assumption) can be associated with cell identifiers that are not the current serving cell (e.g., the serving cell including BS 110). By default (e.g., when no serving cell or non-serving cell identifier is indicated), UE 120 can apply TCI to the serving cell in which TCI is configured (e.g., the serving cell including BS 110).

[0108] Alternatively or concurrently, the TCI may also indicate at least one bandwidth portion (BWP) identifier associated with at least one of one or more reference signals. For example, the TCI may include a bwp-Id data variable or other similar data variable as defined by 3GPP specifications. By default (e.g., when no BWP identifier is indicated), the UE 120 may apply the TCI to both the BWP currently active for downlink communication from BS 110 and the BWP currently active for uplink communication to BS 110.

[0109] Alternatively or concurrently, the TCI may also indicate one or more power control parameters for use by the UE 120 during transmission. The one or more power control parameters may include a path loss reference signal (e.g., CSI-RS or other reference signal), a nominal power parameter (e.g., P0 or other nominal power), a path loss scaling factor (e.g., α or other scaling factor), a closed-loop index, an identifier for a power control group (e.g., PC group ID), or a combination thereof. In some aspects, as described above, the TCI may indicate multiple beams. Therefore, each of the multiple beams may share one or more power control parameters. Alternatively, at least one of the multiple beams may use one or more different power control parameters.

[0110] Alternatively or concurrently, the TCI may also indicate one or more timing advance (TA) parameters for use by the UE 120 during transmission. One or more TA parameters may include TA values, identifiers of TA groups (e.g., TA group ID), or combinations thereof. In some aspects, as described above, the TCI may indicate multiple beams. Thus, each of the multiple beams may share one or more TA parameters. Alternatively, at least one of the multiple beams may use one or more different TA parameters.

[0111] Alternatively or concurrently, the TCI may also indicate one or more codebook or non-codebook parameters for use by the UE 120 during transmission. The one or more codebook or non-codebook parameters may include an SRS resource indicator (SRI); a precoding matrix indicator (PMI) (e.g., a transport PMI (TPMI)); a rank indicator (RI) (e.g., a transport rank indicator (TRI)); or combinations thereof. In some aspects, as described above, the TCI may indicate multiple beams. Therefore, each of the multiple beams may share one or more codebook or non-codebook parameters. Alternatively, at least one of the multiple beams may use one or more different codebook or non-codebook parameters. For example, codebook parameters may be used in codebook-based uplink MIMO transmissions, while non-codebook parameters may be used in non-codebook-based uplink MIMO transmissions.

[0112] Alternatively or additionally, the TCI may also indicate one or more identifiers for one or more antenna panels associated with UE 120. One or more antenna panels may include multiple antenna panels, and each panel may use different analog beams, different uplink power control parameters, different uplink TA parameters, or combinations thereof. In some aspects, one or more identifiers may include identifiers for antenna port groups (e.g., antenna port group ID), identifiers for beam groups (e.g., beam group ID), or other identifiers.

[0113] In some aspects, one or more identifiers may include at least one identifier associated with downlink communication and at least one identifier associated with uplink communication. Therefore, UE 120 may use one or more different antenna panels for uplink communication compared to downlink communication. Alternatively or additionally, UE 120 may use one or more identical antenna panels for both uplink and downlink communication, but the antenna panels are associated with different identifiers for uplink communication compared to downlink communication.

[0114] Alternatively, one or more identifiers may include at least one identifier associated with downlink and uplink communications. In some aspects, as described above, the TCI may indicate multiple beams. Therefore, each of the multiple beams may share one or more identifiers. Alternatively, at least one of the multiple beams may be associated with one or more different identifiers. For example, UE 120 may use one or more different antenna panels for different beams. Additionally or alternatively, UE 120 may use one or more identical antenna panels for different beams, but associate them with different identifiers depending on which beam is used.

[0115] As indicated by reference numeral 510, UE 120 may apply TCI. For example, UE 120 may measure one or more reference signals indicated by TCI to obtain one or more properties provided by the one or more reference signals (e.g., which properties are indicated by one or more QCL rules indicated by TCI). UE 120 may adjust one or more antennas, modulators, demodulators, or other hardware based on one or more properties.

[0116] As indicated by reference numeral 515, BS 110 and UE 120 can communicate using a joint beam as indicated by the TCI. For example, BS 110 can use beamforming hardware (e.g., the combined beam mentioned above). Figure 3 The UE 120 may use one or more attributes provided by one or more reference signals (as described above in conjunction with reference numeral 510) to send downlink data or control information to the UE 120. Similarly, the UE 120 may use beamforming hardware (e.g., as described above in conjunction with reference numeral 510) to receive and decode downlink data or control information. Figure 3 The UE 120 may use one or more attributes provided by one or more reference signals (as described above in conjunction with reference numeral 510) to encode and transmit uplink data or control information to the BS 110.

[0117] In some aspects, as described above, TCI can indicate multiple beams. Therefore, BS 110 and UE 120 can use each of the multiple beams as a common beam. For example, UE 120 and BS 110 can use beamforming hardware (e.g., combined with the above). Figure 3 (As described) to exchange uplink data or control information and downlink data or control information consistent with one or more attributes provided by one or more reference signals.

[0118] Therefore, combination can be used. Figure 5 The described techniques and apparatus are used to jointly indicate a common beam or set of common beams that are commonly applied to each of multiple downlink / uplink (DL / UL) resources. As described above, the following can be used to define the joint DL / UL TCI state:

[0119] Information 1: TCI Status ID. It can be located in a dedicated ID space used for common beam indication, or in a common ID space shared for common DL / UL beam indication, DL beam indication only, or UL beam indication only.

[0120] Information 2: One or more source RSs providing various QCL assumptions, including characteristics regarding delay, Doppler, and spatial Rx / Tx parameters. Each source RS may have the following RS types: SSB, CSI-RS, SRS, PRS, PRACH, or DMRS of PDSCH, PDCCH, PUCCH, or PUSCH. Each source RS may provide at least one of the following QCL / spatial assumptions for DL ​​reception (Rx): "QCL-Type A": {Doppler shift, Doppler spread, average delay, delay spread}; "QCL-Type B": {Doppler shift, Doppler spread}; "QCL-Type C": {Doppler shift, average delay}; or "QCL-Type D": {spatial parameters}. Each source RS may provide at least one of the following QCL / spatial assumptions for UL transmission (Tx): spatial Tx parameters or UL spatial relationship information for UL Doppler shift / spread, average delay, or delay spread, such as UL QCL types A / B / C. The source RS providing UL QCL types A / B / C can be a UL RS (e.g., an SRS) for gNB measurement. Each source RS can provide multiple QCL assumptions simultaneously. For example, SSB#5, as source RS#1, can provide both downlink QCL-Type D and uplink spatial relationship information for a common beam.

[0121] Each source RS can have the following information about its location: the serving cell ID and BWPID of the location where the RS is located. If the serving cell ID does not exist, it applies to the serving cell configured with TCI status. The RS can be located on a different serving cell than the serving cell that is configured with TCI status only when the QCL type is configured as Type C or Type D. If the BWP ID does not exist, it applies to the active DL and UL BWP.

[0122] Based on the provided QCL / spatial assumptions, at least one source RS can have different combinations. For example, to indicate a single common DL / UL beam, the source RS set can have the following combinations: Example 1: One source RS for QCL type A, B, or C, meaning the RS is used to provide QCL type A, B, or C; Example 2: Three source RSs, where the first RS is used for QCL type A / B / C, the second RS for QCL-Type D, and the third RS for spatial relation information; Example 3: Two source RSs, where the first RS is used for QCL type A / B / C, and the second RS for QCL-Type D and spatial relation information; or Example 4: Three source RSs, where the first RS is used for QCL type A / B / C, the second RS for QCL-Type D and spatial relation information, and the third RS for UL QCL type A / B / C.

[0123] As described above, if the joint TCI status indicates multiple common DL / UL beams, then each common DL / UL beam is indicated by more than one source RS set.

[0124] Information 3: UL Power Control (PC) parameters, including path loss RS, P0, Alpha, closed-loop index, PC group ID, etc. for UL transmission of the common DL / UL beam. If the joint TCI status indicates multiple common DL / UL beams, each common DL / UL beam may have an associated set of UL PC parameters, which may be the same as or different from the other common DL / UL beams.

[0125] Information 4: UL Timing Advance (TA) parameters, including the TA group ID or TA value for UL transmissions of the common DL / UL beam. If the joint TCI status indicates multiple common DL / UL beams, each common DL / UL beam may have an associated set of UL TA parameters, which may be the same as or different from the other common DL / UL beams.

[0126] Information 5: Parameters for codebook-based / non-codebook-based PUSCH transmission, including SRI, TPMI, and TRI for PUSCH Tx of common DL / UL beams. If the joint TCI status indicates multiple common DL / UL beams, each common DL / UL beam may have a set of parameters for CB / NCB-based PUSCH transmission.

[0127] Information 6: UE Panel ID or similar ID. The UE panel ID associated with a common DL / UL beam can be two separate panel IDs for DL ​​and UL, or a single panel ID for both DL and UL. A UE panel can be defined as having an independent analog beam, UL PC, or UL timing advance (TA). The UE panel ID can also be referred to as: Antenna Port Group ID, Beam Group ID, etc. If the Joint TCI status indicates multiple common DL / UL beams, each common DL / UL beam can have its own UE panel ID.

[0128] In some aspects, RSs or channels providing various DL QCL assumptions and / or UL spatial relationship information in the joint TCI state for inter-cell mobility can be located in non-serving neighbor cells. Non-serving neighbor cells can be different cells configured with the joint TCI. The joint TCI state indicates the common beam used for DL ​​reception and UL transmission, and the applicable DL reception and UL transmission can be determined in the 3GPP specification or by indication from the gNB (e.g., via RRC / MAC-CE / DCI). RS or channel types can include SSB, CSI-RS, PRS, SRS, PDCCH, PDSCH, PUCCH, PUSCH, or PRACH. A corresponding non-serving neighbor cell ID and BWP ID can be configured for each RS or channel in the joint DL / UL TCI state. The non-serving neighbor cell ID in the joint TCI state can be indicated by its PCI, specific cell ID, or SSB set ID.

[0129] In some aspects, the RS or channel providing UL spatial relationship information in the TCI state for UL transmissions used for inter-cell mobility can be located in a non-serving neighbor cell. The non-serving neighbor cell can be a different cell configured with the TCI. The UL TCI state indicates the UL beam used for UL transmissions and can be determined in the 3GPP specification or by indication from the gNB (e.g., via RRC / MAC-CE / DCI). The RS or channel type can include SSB, CSI-RS, PRS, SRS, PDCCH, PDSCH, PUCCH, PUSCH, or PRACH. A corresponding non-serving neighbor cell ID and BWP ID can be configured for each RS / channel in the TCI. The non-serving neighbor cell ID in the TCI for UL can be indicated by its PCI, specific cell ID, or SSB set ID.

[0130] Figure 6 This is a diagram illustrating, for example, an example process 600 performed by a UE. Process 600 is a UE (e.g., Figure 1 UE 120 or Figure 8 An example of the device 800 performing operations associated with receiving TCI for the joint downlink / uplink beam.

[0131] like Figure 6 As shown, in some aspects, process 600 may include: from a base station (e.g., Figure 1 BS 110 or Figure 9 The device 900) receives a TCI for the beam, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam (block 610). For example, the UE can (e.g., by using...) Figure 8The receiving component 802 depicted herein receives a beam-specific TCI from the BS, wherein the TCI indicates one or more reference signals that provide one or more properties of the beam, as described herein.

[0132] like Figure 6 As further shown, in some aspects, process 600 may include: transmitting uplink data or control information to the BS using a beam (block 620). For example, the UE may (e.g., by using...) Figure 8 The transmission component 804 depicted herein uses a beam to transmit uplink data or control information to the BS, as described herein.

[0133] like Figure 6 As further shown, in some aspects, process 600 may include receiving downlink data or control information from the BS using a beam (block 630). For example, the UE may (e.g., by using receiving component 802) receive downlink data or control information from the BS using a beam, as described herein.

[0134] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described in one or more other processes as described below or in conjunction with those described elsewhere in this document.

[0135] In the first additional aspect, TCI includes an identifier.

[0136] In the second additional aspect, either alone or in combination with the first aspect, the identifier is in the field used for common beam configuration.

[0137] In the third additional aspect, either alone or in combination with one or more aspects of the first and second aspects, the identifier is in a field shared among the common beam configuration, downlink beam configuration, and uplink beam configuration.

[0138] In the fourth additional aspect, either alone or in combination with one or more of the first to third aspects, one or more reference signals include at least one of the following: a synchronization signal, CSI-RS, SRS, PRS, PRACH signal, DMRS, or a combination thereof.

[0139] In the fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, one or more properties of the beam include at least one of the following: Doppler frequency shift, Doppler spread, average delay, delay spread, spatial receiving filter, spatial relation information for transmission, or a combination thereof.

[0140] In the sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, at least one of the one or more reference signals provides at least two properties of the beam.

[0141] In the seventh additional aspect, either alone or in combination with one or more of the first to sixth aspects, the TCI also indicates at least one serving cell identifier associated with at least one of the one or more reference signals.

[0142] In the eighth additional aspect, either alone or in combination with one or more of the first to seventh aspects, TCI also indicates at least one BWP identifier associated with at least one of the one or more reference signals.

[0143] In the ninth additional aspect, either alone or in combination with one or more of the first to eighth aspects, the TCI indicates multiple sets corresponding to multiple beams, each set having one or more reference signals.

[0144] In the tenth additional aspect, either alone or in combination with one or more of the first to ninth aspects, the TCI also indicates one or more power control parameters to be used during transmission.

[0145] In the eleventh additional aspect, either alone or in combination with one or more of the first to tenth aspects, one or more power control parameters include at least one of the following: a path loss reference signal, a nominal power parameter, a path loss scaling factor, a closed-loop index, an identifier for a power control group, or a combination thereof.

[0146] In the twelfth additional aspect, either alone or in combination with one or more of the first to eleventh aspects, the TCI indicates multiple beams, each beam sharing one or more power control parameters.

[0147] In the thirteenth additional aspect, either alone or in combination with one or more of the first to twelfth aspects, the TCI indicates multiple beams, each using different power control parameters.

[0148] In the fourteenth additional aspect, either alone or in combination with one or more of the first to thirteenth aspects, the TCI also indicates one or more TA parameters to be used at the time of transmission.

[0149] In the fifteenth additional aspect, either alone or in combination with one or more of the first to fourteenth aspects, one or more TA parameters include at least one of the following: TA value, identifier of TA group, or a combination thereof.

[0150] In the sixteenth additional aspect, either alone or in combination with one or more of the first to fifteenth aspects, the TCI indicates multiple beams, each beam sharing one or more TA parameters.

[0151] In the seventeenth additional aspect, either alone or in combination with one or more of the first to sixteenth aspects, the TCI indicates multiple beams, each using different TA parameters.

[0152] In the eighteenth additional aspect, either alone or in combination with one or more of the first to seventeenth aspects, the TCI also indicates one or more codebook or non-codebook parameters to be used at the time of transmission.

[0153] In the nineteenth additional aspect, either alone or in combination with one or more of the first to eighteenth aspects, one or more codebook or non-codebook parameters include at least one of the following: SRI, PMI, RI, or a combination thereof.

[0154] In the twentieth additional aspect, either alone or in combination with one or more of the first to nineteenth aspects, the TCI indicates multiple beams, each using different codebook or non-codebook parameters.

[0155] In the twenty-first additional aspect, either alone or in combination with one or more of the first to twentieth aspects, the TCI also indicates one or more identifiers of one or more antenna panels associated with the UE's device.

[0156] In the twenty-second additional aspect, either alone or in combination with one or more of the first to twenty-first aspects, one or more identifiers include at least one identifier associated with downlink communication and at least one identifier associated with uplink communication.

[0157] In the twenty-third additional aspect, either alone or in combination with one or more of the first to twenty-second aspects, one or more identifiers include at least one identifier associated with both downlink communication and uplink communication.

[0158] In the twenty-fourth additional aspect, either alone or in combination with one or more of the first to twenty-third aspects, one or more identifiers include at least one of the following: an identifier for an antenna port group, or an identifier for a beam group.

[0159] In the twenty-fifth additional aspect, either alone or in combination with one or more of the first to twenty-fourth aspects, one or more antenna panels include multiple antenna panels, each panel using different analog beams, uplink power control parameters, uplink timing advance parameters, or combinations thereof.

[0160] In the twenty-sixth additional aspect, either alone or in combination with one or more of the first to twenty-fifth aspects, the TCI indicates a plurality of beams, each beam being associated with a different identifier of one or more antenna panels associated with the device of the UE.

[0161] Although Figure 6 An example box for process 600 is shown, but in some aspects, it differs from... Figure 6 Compared to the boxes described herein, process 600 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently. Alternatively, two or more boxes in process 600 may be executed in parallel.

[0162] Figure 7 This is a diagram illustrating, for example, an example process 700 performed by a BS. Process 700 is a base station (e.g., Figure 1 BS 110 or Figure 9 An example of the device 900 performing operations associated with transmitting TCI for the combined downlink / uplink beam.

[0163] like Figure 7 As shown, in some aspects, process 700 may include: sending an instruction to the UE (e.g., UE 120 or...). Figure 8 The device 800) transmits a TCI for the beam, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam (block 710). For example, the base station can (e.g., by using...) Figure 9 The transmission component 904 depicted herein transmits a beam-specific TCI to the UE, wherein the TCI indicates one or more reference signals that provide one or more attributes of the beam, as described herein.

[0164] like Figure 7 As further shown, in some aspects, process 700 may include: receiving uplink data or control information from the UE using the beam (block 720). For example, the base station may (e.g., by using...) Figure 9 The receiving component 902 depicted herein uses a beam to receive uplink data or control information from the UE, as described herein.

[0165] like Figure 7 As further shown, in some aspects, process 700 may include: transmitting downlink data or control information to the UE using a beam (block 730). For example, the base station may (e.g., by using transmission component 904) transmit downlink data or control information to the UE using a beam, as described herein.

[0166] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described in one or more other processes as described below or in conjunction with those described elsewhere in this document.

[0167] In the first additional aspect, TCI includes an identifier.

[0168] In the second additional aspect, either alone or in combination with the first aspect, the identifier is in the field used for common beam configuration.

[0169] In the third additional aspect, either alone or in combination with one or more aspects of the first and second aspects, the identifier is in a field shared among the common beam configuration, downlink beam configuration, and uplink beam configuration.

[0170] In the fourth additional aspect, either alone or in combination with one or more of the first to third aspects, one or more reference signals include at least one of the following: a synchronization signal, CSI-RS, SRS, PRS, PRACH signal, DMRS, or a combination thereof.

[0171] In the fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, the one or more properties of the beam include at least one of the following: Doppler frequency shift, Doppler spread, average delay, delay spread, spatial receiving filter, spatial relation information for transmission, or a combination thereof.

[0172] In the sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, at least one of the one or more reference signals provides at least two properties of the beam.

[0173] In the seventh additional aspect, either alone or in combination with one or more of the first to sixth aspects, the TCI also indicates at least one serving cell identifier associated with at least one of the one or more reference signals.

[0174] In the eighth additional aspect, either alone or in combination with one or more of the first to seventh aspects, TCI also indicates at least one BWP identifier associated with at least one of the one or more reference signals.

[0175] In the ninth additional aspect, either alone or in combination with one or more of the first to eighth aspects, the TCI indicates multiple sets corresponding to multiple beams, each set having one or more reference signals.

[0176] In the tenth additional aspect, either alone or in combination with one or more of the first to ninth aspects, the TCI also indicates one or more power control parameters for the UE.

[0177] In the eleventh additional aspect, either alone or in combination with one or more of the first to tenth aspects, one or more power control parameters include at least one of the following: a path loss reference signal, a nominal power parameter, a path loss scaling factor, a closed-loop index, an identifier for a power control group, or a combination thereof.

[0178] In the twelfth additional aspect, either alone or in combination with one or more of the first to eleventh aspects, the TCI indicates multiple beams, each beam sharing one or more power control parameters.

[0179] In the thirteenth additional aspect, either alone or in combination with one or more of the first to twelfth aspects, the TCI indicates multiple beams, each using different power control parameters.

[0180] In the fourteenth additional aspect, either alone or in combination with one or more of the first to thirteenth aspects, the TCI also indicates one or more TA parameters for the UE.

[0181] In the fifteenth additional aspect, either alone or in combination with one or more of the first to fourteenth aspects, one or more TA parameters include at least one of the following: TA value, identifier of TA group, or a combination thereof.

[0182] In the sixteenth additional aspect, either alone or in combination with one or more of the first to fifteenth aspects, the TCI indicates multiple beams, each beam sharing one or more TA parameters.

[0183] In the seventeenth additional aspect, either alone or in combination with one or more of the first to sixteenth aspects, the TCI indicates multiple beams, each using different TA parameters.

[0184] In the eighteenth additional aspect, either alone or in combination with one or more of the first to seventeenth aspects, the TCI also indicates one or more codebook or non-codebook parameters for the UE.

[0185] In the nineteenth additional aspect, either alone or in combination with one or more of the first to eighteenth aspects, one or more codebook or non-codebook parameters include at least one of the following: SRI, PMI, RI, or a combination thereof.

[0186] In the twentieth additional aspect, either alone or in combination with one or more of the first to nineteenth aspects, the TCI indicates multiple beams, each using different codebook or non-codebook parameters.

[0187] In the twenty-first additional aspect, either alone or in combination with one or more of the first to twentieth aspects, the TCI also indicates one or more identifiers for one or more antenna panels associated with the UE.

[0188] In the twenty-second additional aspect, either alone or in combination with one or more of the first to twenty-first aspects, one or more identifiers include at least one identifier associated with downlink communication and at least one identifier associated with uplink communication.

[0189] In the twenty-third additional aspect, either alone or in combination with one or more of the first to twenty-second aspects, one or more identifiers include at least one identifier associated with both downlink communication and uplink communication.

[0190] In the twenty-fourth additional aspect, either alone or in combination with one or more of the first to twenty-third aspects, one or more identifiers include at least one of the following: an identifier for an antenna port group, or an identifier for a beam group.

[0191] In the twenty-fifth additional aspect, either alone or in combination with one or more of the first to twenty-fourth aspects, one or more antenna panels include multiple antenna panels, each panel using different analog beams, uplink power control parameters, uplink timing advance parameters, or combinations thereof.

[0192] In the twenty-sixth additional aspect, either alone or in combination with one or more of the first to twenty-fifth aspects, the TCI indicates multiple beams, each beam being associated with a different identifier for one or more antenna panels associated with the UE.

[0193] Although Figure 7 An example box for process 700 is shown, but in some aspects, it differs from... Figure 7 Compared to the boxes described herein, process 700 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently. Alternatively, two or more boxes in process 700 may be executed in parallel.

[0194] Figure 8This is a block diagram of an example device 800 for wireless communication. Device 800 may be a UE, or a UE may include device 800. In some aspects, device 800 includes a receiving component 802 and a transmitting component 804, which can communicate with each other (e.g., via one or more buses or one or more other components). As shown, device 800 can use the receiving component 802 and the transmitting component 804 to communicate with another device 806 (e.g., Figure 1 UE 120 Figure 1 The device 800 may communicate with the BS 110 or another wireless communication device. As further shown, the device 800 may include one or more of a filtering component 808, a modulation component 810, or a determining component 812, etc.

[0195] In some respects, device 800 can be configured to perform the functions described herein. Figure 5 The one or more operations described herein. Alternatively or concurrently, the apparatus 800 may be configured to perform one or more processes described herein, such as... Figure 6 Process 600 Figure 10 Process 1000 Figure 11 The process 1100 or a combination thereof. In some aspects, the device 800 or Figure 8 One or more components shown may include the above-mentioned components. Figure 2 One or more components of the UE described. Alternatively or in conjunction with the above. Figure 2 Describes the implementation within one or more components Figure 8 One or more components are shown. Alternatively or additionally, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion thereof) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of that component.

[0196] Receiver 802 may receive communication (e.g., reference signals, control information, data communication, or combinations thereof) from device 806. Receiver 802 may provide the received communication to one or more other components of device 800. In some aspects, receiver 802 may perform signal processing on the received communication (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signal to one or more other components of device 806. In some aspects, receiver 802 may include the elements described above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0197] In some respects, receiving component 802 may be a component of a processing system. For example, the processing system of device 800 may refer to a system that includes various other components or sub-components of device 800.

[0198] The transmission component 804 can send communications (e.g., reference signals, control information, data communications, or combinations thereof) to the device 806. In some aspects, one or more other components of the device 806 can generate communications and provide the generated communications to the transmission component 804 for transmission to the device 806. In some aspects, the transmission component 804 can perform signal processing on the generated communications (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) and can transmit the processed signals to the device 806. In some aspects, the transmission component 804 can include the combinations described above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 804 may be co-located with the receive component 802 in a transceiver.

[0199] In some respects, the transmission component 804 may be a component of a processing system. For example, the processing system of device 800 may refer to a system that includes various other components or sub-components of device 800.

[0200] The processing system of device 800 can interface with other components of device 800 and can process information received from other components (e.g., input or signals), output information to other components, etc. For example, the chip or modem of device 800 may include a processing system, a receiving component 802 for receiving or acquiring information, and a transmitting component 804 for outputting, transmitting, or providing information. In some cases, the receiving component 802 may refer to the interface between the processing system of the chip or modem and the receiver, enabling device 800 to receive information or signal input and to transmit information to the processing system. In some cases, the transmitting component 804 may refer to the interface between the processing system of the chip or modem and the transmitter, enabling device 800 to transmit information output from the chip or modem. Those skilled in the art will readily recognize that a second interface can also acquire or receive information or signal input, and a first interface can also output, transmit, or provide information.

[0201] In some aspects, receiving component 802 can receive a beam-specific TCI from device 806, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam. Therefore, receiving component 802 can use the beam to receive downlink data or control information from device 806. For example, filtering component 808 can filter signals from device 806, which encodes downlink data or control information based on one or more attributes. In some aspects, filtering component 808 may include the elements described above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0202] In some aspects, determining component 812 can determine parameters associated with the joint downlink and uplink TCI, or uplink spatial relationship parameters associated with the uplink TCI, etc. In some aspects, determining component 812 can include the above-mentioned combination... Figure 2 The described UE includes a transmit processor, receive processor, controller / processor, memory, or a combination thereof.

[0203] Furthermore, the transmission component 804 can use a beam to transmit uplink data or control information to the device 806. For example, the modulation component 810 can encode the uplink data or control information based on one or more attributes. In some aspects, the modulation component 810 may include the elements described above. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof.

[0204] Figure 8 The number and arrangement of components shown are provided as an example. In practice, with... Figure 8 Compared to the components shown, there may be additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 8 The two or more components shown can be implemented in a single component, or Figure 8 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 8 The component collection shown (e.g., one or more components) can perform actions described as being performed by Figure 8 The other set of components shown performs one or more functions.

[0205] Figure 9This is a block diagram of an example device 900 for wireless communication. Device 900 may be a base station, or a base station may include device 900. In some aspects, device 900 includes a receiving component 902 and a transmitting component 904, which can communicate with each other (e.g., via one or more buses or one or more other components). As shown, device 900 can use the receiving component 902 and the transmitting component 904 to communicate with another device 906 (e.g., ...). Figure 1 UE 120 Figure 1 The device 900 may communicate with the BS 110 or another wireless communication device. As further shown, the device 900 may include one or more of the following: modulation component 908 or filtering component 910.

[0206] In some respects, device 900 can be configured to perform the functions described herein. Figure 5 The described one or more operations. Alternatively or additionally, the device 900 may be configured to perform one or more processes described herein, such as... Figure 7 Process 700 Figure 12 Process 1200 Figure 13 The process 1300 or a combination thereof. In some aspects, device 900 or Figure 9 One or more components shown may include the above-mentioned components. Figure 2 One or more components of the described base station. Alternatively or alternatively, this can be combined with the above. Figure 2 Describes the implementation within one or more components Figure 9 One or more components are shown. Alternatively or additionally, one or more components in the set of components may be implemented at least partially as software stored in memory. For example, a component (or a portion thereof) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of that component.

[0207] Receiver 902 may receive communication (e.g., reference signals, control information, data communication, or combinations thereof) from device 906. Receiver 902 may provide the received communication to one or more other components of device 900. In some aspects, receiver 902 may perform signal processing on the received communication (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signal to one or more other components of device 906. In some aspects, receiver 902 may include the elements described above. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0208] In some aspects, receiving component 902 may be a component of a processing system. For example, the processing system of device 900 may refer to a system that includes various other components or sub-components of device 900.

[0209] The transmission component 904 can send communications (e.g., reference signals, control information, data communications, or combinations thereof) to the device 906. In some aspects, one or more other components of the device 906 can generate communications and provide the generated communications to the transmission component 904 for transmission to the device 906. In some aspects, the transmission component 904 can perform signal processing on the generated communications (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) and can transmit the processed signals to the device 906. In some aspects, the transmission component 904 can include the combinations thereof. Figure 2 The described base station includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 904 may be co-located with the receive component 902 in a transceiver.

[0210] In some respects, the transmission component 904 may be a component of the processing system. For example, the processing system of device 900 may refer to a system that includes various other components or sub-components of device 900.

[0211] The processing system of device 900 can interface with other components of device 900 and can process information received from other components (e.g., input or signals), output information to other components, etc. For example, the chip or modem of device 900 may include a processing system, a receiving component 902 for receiving or acquiring information, and a transmitting component 904 for outputting, transmitting, or providing information. In some cases, the receiving component 902 may refer to the interface between the processing system of the chip or modem and the receiver, enabling device 900 to receive information or signal input and to transmit information to the processing system. In some cases, the transmitting component 904 may refer to the interface between the processing system of the chip or modem and the transmitter, enabling device 900 to transmit information output from the chip or modem. Those skilled in the art will readily recognize that a second interface can also acquire or receive information or signal input, and a first interface can also output, transmit, or provide information.

[0212] In some aspects, transmission component 904 may receive a beam-specific TCI to device 906, wherein the TCI indicates one or more reference signals providing one or more attributes of the beam. Therefore, transmission component 904 may use the beam to transmit downlink data or control information to device 906. For example, modulation component 908 may encode the downlink data or control information based on one or more attributes. In some aspects, modulation component 908 may include the elements described above. Figure 2 The described base station includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. Additionally, the receiving component 902 can use beamforming to receive uplink data or control information from the device 906. For example, the filtering component 910 can filter signals from the device 906, which encodes uplink data or control information based on one or more attributes. In some aspects, the filtering component 910 may include elements combined with the above description. Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0213] Figure 9 The number and arrangement of components shown are provided as an example. In practice, with... Figure 9 Compared to the components shown, there may be additional components, fewer components, different components, or components arranged differently. Furthermore, Figure 9 The two or more components shown can be implemented in a single component, or Figure 9 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 9 The component collection (one or more components) shown can perform actions described as being performed by Figure 9 The other set of components shown performs one or more functions.

[0214] Figure 10 This is a diagram illustrating, for example, an example process 1000 performed by a UE. Process 1000 is a UE (e.g., Figure 1 UE120 or Figure 8 An example of the device 800 performing operations associated with the joint downlink and uplink TCI for inter-cell mobility.

[0215] like Figure 10 As shown, in some aspects, process 1000 may include: receiving communication from a non-serving neighbor cell (block 1010). For example, the UE may (e.g., by using...) Figure 8 The receiving component 802 described herein receives communications from a non-serving neighbor cell, as described herein.

[0216] like Figure 10 As further shown, in some aspects, process 1000 may include: determining parameters associated with the joint downlink and uplink TCI states based on received communications from non-serving neighbor cells (box 1020). For example, the UE may (e.g., by using...) Figure 8 The determining component 812 described herein determines parameters associated with the joint downlink and uplink TCI states based on communications received from non-serving neighbor cells, as described herein.

[0217] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described in one or more other processes as described below or in conjunction with those described elsewhere in this document.

[0218] In the first additional aspect, the parameter is a QCL parameter or a spatial relation parameter.

[0219] In the second additional aspect, either alone or in combination with the first aspect, the parameter is the downlink QCL parameter.

[0220] In the third additional aspect, the parameters are associated with uplink spatial relationship information, either alone or in combination with one or more of the first and second aspects.

[0221] In the fourth additional aspect, communication is either alone or in combination with one or more of the first to third aspects, and is communication via a reference signal or a physical channel.

[0222] In the fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, process 1000 includes: determining a common beam for downlink reception and uplink transmission based on the joint downlink and uplink TCI states.

[0223] In the sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, the common beam is dynamically configured using at least one of RRC communication, Media Access Control (MAC) control element (MAC-CE), or DCI.

[0224] In the seventh additional aspect, either alone or in combination with one or more of the first to sixth aspects, the communication includes at least one of the following: SSB, CSI-RS, PRS, SRS, PDCCH, PDSCH, PUCCH, PUSCH, or PRACH.

[0225] In the eighth additional aspect, either alone or in combination with one or more of the first to seventh aspects, a non-serving neighbor cell is associated with a cell identifier corresponding to a physical cell identifier or another type of cell identifier.

[0226] In the ninth additional aspect, either alone or in combination with one or more of the first to eighth aspects, the cell identifier is configured for each possible communication in the combined downlink and uplink TCI states.

[0227] Although Figure 10 An example box for process 1000 is shown, but in some aspects, it differs from... Figure 10 Compared to the boxes described herein, process 1000 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently. Alternatively, two or more boxes in process 1000 may be executed in parallel.

[0228] Figure 11 This is a diagram illustrating, for example, an example process 1100 performed by a UE. Process 1100 is a UE (e.g., Figure 1 UE120 or Figure 8 An example of the device 800 performing operations associated with the joint downlink and uplink TCI for inter-cell mobility.

[0229] like Figure 11 As shown, in some aspects, process 1100 may include: receiving communication from a non-serving neighbor cell (block 1110). For example, the UE may (e.g., by using...) Figure 8 The receiving component 802 described herein receives communications from a non-serving neighbor cell, as described herein.

[0230] like Figure 11 As further shown, in some aspects, process 1100 may include: determining uplink spatial relationship parameters associated with the uplink TCI state based on received communications from non-serving neighbor cells (box 1120). For example, the UE may (e.g., by using...) Figure 8 The determining component 812 described herein determines, based on received communications from non-serving neighbor cells, uplink spatial relationship parameters associated with the uplink TCI state, as described herein.

[0231] Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described in one or more other processes as described below or in conjunction with those described elsewhere in this document.

[0232] In the first additional aspect, communication is reference signal or physical channel communication.

[0233] In the second additional aspect, either alone or in combination with the first aspect, process 1100 includes: determining (e.g., using determination component 812) an uplink beam for uplink transmission based on the uplink TCI state.

[0234] In the third additional aspect, either alone or in combination with one or more of the first and second aspects, the uplink beam is dynamically configured using at least one of RRC communication, MAC-CE, or DCI.

[0235] In the fourth additional aspect, either alone or in combination with one or more of the first to third aspects, the communication includes at least one of the following: SSB, CSI-RS, PRS, SRS, PDCCH, PDSCH, PUCCH, PUSCH, or PRACH.

[0236] In the fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, a non-serving neighbor cell is associated with a cell identifier corresponding to a physical cell identifier or another type of cell identifier.

[0237] In the sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, the cell identifier is configured for each possible communication in the uplink TCI state.

[0238] Although Figure 11 An example box for process 1100 is shown, but in some aspects, it differs from... Figure 11 Compared to the boxes described herein, process 1100 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently. Alternatively, two or more boxes in process 1100 may be executed in parallel.

[0239] Figure 12 This is a diagram illustrating, for example, a sample process 1200 executed by a BS. Process 1200 is a BS (e.g., Figure 1 BS110 or Figure 9 An example of the device 900 performing operations associated with the joint downlink and uplink TCI for inter-cell mobility.

[0240] like Figure 12 As shown, in some aspects, process 1200 may include: determining parameters associated with the joint downlink and uplink TCI states (box 1210). For example, the BS may (e.g., by using...) Figure 9 The determining component 912 described herein determines the parameters associated with the joint downlink and uplink TCI states, as described herein.

[0241] like Figure 12 As further shown, in some aspects, process 1200 may include: sending communication via a non-serving neighbor cell to indicate parameters (box 1220). For example, the BS may (e.g., by using...) Figure 9 The transmission component 904 described herein transmits communication via a non-serving neighbor cell to indicate parameters, as described herein.

[0242] Process 1200 may include additional aspects, such as any single aspect or any combination of aspects described in one or more other processes as described below or in conjunction with those described elsewhere in this document.

[0243] In the first additional aspect, the parameter is a QCL parameter or a spatial relation parameter.

[0244] In the second additional aspect, either alone or in combination with the first aspect, the parameter is the downlink QCL parameter.

[0245] In the third additional aspect, the parameters are associated with uplink spatial relationship information, either alone or in combination with one or more of the first and second aspects.

[0246] In the fourth additional aspect, communication is either alone or in combination with one or more of the first to third aspects, and is communication via a reference signal or a physical channel.

[0247] In the fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, the parameters combine the joint downlink and uplink TCI states to indicate the common beam used for downlink reception and uplink transmission.

[0248] In the sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, the common beam is dynamically configured using at least one of RRC communication, MAC-CE, or DCI.

[0249] In the seventh additional aspect, either alone or in combination with one or more of the first to sixth aspects, the communication includes at least one of the following: SSB, CSI-RS, PRS, SRS, PDCCH, PDSCH, PUCCH, PUSCH, or PRACH.

[0250] In the eighth additional aspect, either alone or in combination with one or more of the first to seventh aspects, a non-serving neighbor cell is associated with a cell identifier corresponding to a physical cell identifier or another type of cell identifier.

[0251] In the ninth additional aspect, either alone or in combination with one or more of the first to eighth aspects, the cell identifier is configured for each possible communication in the joint downlink and uplink TCI states.

[0252] Although Figure 12 An example box for process 1200 is shown, but in some aspects, it differs from... Figure 12 Compared to the boxes described herein, process 1200 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently. Alternatively, two or more boxes in process 1200 may be executed in parallel.

[0253] Figure 13 This is a diagram illustrating, for example, a sample process 1300 executed by a BS. Process 1300 is a BS (e.g., Figure 1 BS110 or Figure 9 An example of the device 900 performing operations associated with the joint downlink and uplink TCI for inter-cell mobility.

[0254] like Figure 13 As shown, in some aspects, process 1300 may include: determining uplink spatial relationship parameters associated with the uplink TCI state (box 1310). For example, the BS may (e.g., by using...) Figure 9 The determining component 913 described herein determines the uplink spatial relationship parameters associated with the uplink TCI state, as described herein.

[0255] like Figure 13 As further shown, in some aspects, process 1300 may include: sending communication via a non-serving neighbor cell to indicate parameters (box 1320). For example, the BS may (e.g., by using...) Figure 9 The transmission component 904 described herein transmits communication via a non-serving neighbor cell to indicate parameters, as described herein.

[0256] Process 1300 may include additional aspects, such as any single aspect or any combination of aspects described in one or more other processes as described below or in conjunction with those described elsewhere in this document.

[0257] In the first additional aspect, communication is reference signal or physical channel communication.

[0258] In the second additional aspect, either alone or in combination with the first aspect, the parameters indicate the uplink beam used for uplink transmission based on the uplink TCI status.

[0259] In the third additional aspect, either alone or in combination with one or more of the first and second aspects, the uplink beam is dynamically configured using at least one of RRC communication, MAC-CE, or DCI.

[0260] In the fourth additional aspect, either alone or in combination with one or more of the first to third aspects, the communication includes at least one of the following: SSB, CSI-RS, PRS, SRS, PDCCH, PDSCH, PUCCH, PUSCH, or PRACH.

[0261] In the fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, a non-serving neighbor cell is associated with a cell identifier corresponding to a physical cell identifier or another type of cell identifier.

[0262] In the sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, the cell identifier is configured for each possible communication in the uplink TCI state.

[0263] Although Figure 13 An example box for process 1300 is shown, but in some aspects, it differs from... Figure 13 Compared to the boxes described herein, process 1300 may include additional boxes, fewer boxes, different boxes, or boxes arranged differently. Alternatively, two or more boxes in process 1300 may be executed in parallel.

[0264] The above disclosure provides illustrations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations can be made based on the above disclosure, or from various forms of practice.

[0265] As used herein, the term "component" is intended to be interpreted broadly as hardware, firmware, or a combination of hardware and software. As used herein, a processor is implemented using hardware, firmware, or a combination of hardware and software. As used herein, the phrase "based on" is intended to be interpreted broadly as "at least partially based on". As used herein, satisfying a threshold can refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, or not equal to a threshold, etc. As used herein, the phrase referring to "at least one of" a list of items refers to any combination of these items, including a single member. For example, "at least one of a, b, or c" is intended to cover: a, b, c, ab, ac, bc, and abc.

[0266] Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and may be used interchangeably with “one or more”. Furthermore, as used herein, the article “the” is intended to include one or more items referenced in conjunction with the article “the” and may be used interchangeably with “one or more”. Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and may be used interchangeably with “one or more”. The phrase “only one” or similar terms are used when only one item is intended. Furthermore, as used herein, the terms “have,” “possess,” “include,” and similar terms are intended to be open-ended terms. Furthermore, as used herein, the term “or” when used in a series is intended to be inclusive and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., if used in conjunction with “any” or “only one”).

[0267] The various illustrative logics, logic blocks, modules, circuits, and algorithmic processes described in conjunction with the aspects disclosed herein can be implemented as electronic hardware, computer software, or a combination of both. The interchangeability of software and hardware has been demonstrated in the various illustrative components, blocks, modules, circuits, and processes described above, based on their general functionality. Whether such functionality is implemented in hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0268] Hardware and data processing apparatuses for implementing the various illustrative logic, logic blocks, modules, and circuits described in connection with the aspects disclosed herein can be implemented or executed using general-purpose single-chip or multi-chip processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor can be a microprocessor, or any conventional processor, controller, microcontroller, or state machine. A processor can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such architecture. In some aspects, specific processes and methods can be executed by circuitry specific to a given function.

[0269] In one or more aspects, the described functionality can be implemented using hardware, digital electronic circuits, computer software, firmware (including the structures disclosed herein and their equivalents), or any combination thereof. Aspects of the subject matter described herein can also be implemented as one or more computer programs (e.g., one or more modules of computer program instructions) encoded on a computer storage medium for execution by a data processing apparatus or for controlling the operation of the data processing apparatus.

[0270] If implemented using software, these functions can be stored as one or more instructions or code on or transmitted through a computer-readable medium. Processes of implementing the methods or algorithms disclosed herein can be implemented using processor-executable software modules residing on a computer-readable medium. Computer-readable media include both computer storage media and communication media, with communication media including any medium capable of transferring a computer program from one place to another. Storage media can be any available medium accessible to a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer. Furthermore, any connection can be appropriately referred to as a computer-readable medium. As used herein, disks and discs include compact optical discs (CDs), laser discs, optical discs, digital versatile optical discs (DVDs), floppy disks, and Blu-ray discs, where disks typically magnetically copy data, while optical discs optically copy data using lasers. Combinations of the above should also be included within the scope of computer-readable media. Furthermore, the operation of a method or algorithm can be a set of code and instructions or any combination of code and instructions, located on machine-readable and computer-readable media, which can be incorporated into a computer program product.

[0271] Various modifications to the aspects described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the spirit or scope of this disclosure. Therefore, the claims are not limited to the aspects shown herein, but are to be given the widest scope consistent with this disclosure, the principles disclosed herein, and the novel features.

[0272] In addition, those skilled in the art will readily understand that the terms “upper” and “lower” are sometimes used to conveniently describe the figures and indicate the relative position corresponding to the orientation of the figures on the correctly oriented page, and may not reflect the correct orientation of any implemented device.

[0273] Some features described in this specification in the context of different aspects may also be implemented in combination in a single aspect. Conversely, various features described in the context of a single aspect may also be implemented individually or in any suitable sub-combination in multiple aspects. Furthermore, although some features are described above as working in a particular combination and even initially claimed in this way, in some cases, one or more features from the claimed combination may be extracted from that combination, and the claimed combination may be for a sub-combination or a variation thereof.

[0274] Similarly, although operations are described in a specific order in the accompanying drawings, this should not be construed as requiring these operations to be performed in the specific or sequential order shown, or all of the shown operations, in order to obtain the desired result. Furthermore, the drawings schematically depict one or more example processes in the form of flowcharts. However, other operations not described may be incorporated into the schematically illustrated example processes. For example, one or more additional operations may be performed before, after, simultaneously with, or between the shown operations. In some environments, multitasking and parallel processing are advantageous. Moreover, the division of system components in the aspects described above should not be construed as requiring such division in all aspects, and it should be understood that the described program components and systems can generally be integrated together into a single software product or packaged into multiple software products. Additionally, other aspects are within the scope of the appended claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve the desired result.

Claims

1. A method for wireless communication performed by a device of a user equipment (UE), comprising: Receive Transmission Configuration Indicators (TCIs) from the base station (BS) for multiple beams that serve as a common beam. Wherein, the TCI indicates one or more reference signals that provide one or more attributes of each of the plurality of beams. Wherein, the TCI includes an identifier shared by each of the plurality of beams, and The identifier is in a field shared between the downlink beam configuration and the uplink beam configuration; At least through the identifier in the shared field of the uplink beam configuration, the first beam of the plurality of beams is used to send uplink data or control information to the BS; and The first beam is used to receive downlink data or control information from the BS, at least through the identifier in the field shared by the downlink beam configuration.

2. The method according to claim 1, wherein, The one or more reference signals include at least one of the following: Synchronization signal, Channel State Information Reference Signal (CSI-RS) Detection Reference Signal (SRS), Positioning Reference Signal (PRS), Physical Random Access Channel (PRACH) signal, Demodulation Reference Signal (DMRS) Or a combination thereof.

3. The method according to claim 1, wherein, The beam's one or more properties include at least one of the following: Doppler shift, Doppler extension, Average delay, Delayed spread, Space receiving filter, Spatial relationship information used for transmission Or a combination thereof.

4. The method according to claim 1, wherein, The TCI also indicates one or more timing advance (TA) parameters to be used during transmission.

5. The method according to claim 4, wherein, The one or more TA parameters include at least one of the following: TA value, The identifier of the TA group, Or a combination thereof.

6. The method according to claim 4, wherein, Each of the plurality of beams may share one or more TA parameters or use different TA parameters.

7. The method according to claim 1, wherein, The TCI also indicates one or more identifiers for one or more antenna panels associated with the device of the UE.

8. The method according to claim 7, wherein, The one or more identifiers include at least one identifier associated with downlink communication and at least one identifier associated with uplink communication, or the one or more identifiers include at least one identifier associated with both downlink communication and uplink communication.

9. The method according to claim 7, wherein, The one or more identifiers include at least one of the following: The identifier of the antenna port group, or The identifier for the beam group.

10. The method according to claim 7, wherein, The one or more antenna panels include multiple antenna panels, each panel using different analog beams, uplink power control parameters, uplink timing advance parameters, or combinations thereof.

11. The method according to claim 7, wherein, Each of the plurality of beams is associated with a different identifier for one or more antenna panels associated with the device of the UE.

12. The method according to claim 1, wherein, At least one of the one or more reference signals provides at least two properties of the beam.

13. The method according to claim 1, wherein, The TCI also indicates at least one serving cell identifier associated with at least one of the one or more reference signals, at least one bandwidth portion (BWP) identifier associated with at least one of the one or more reference signals, or a combination thereof.

14. The method according to claim 1, wherein, The TCI indication corresponds to multiple sets of multiple beams, each set having one or more reference signals.

15. The method according to claim 1, wherein, The TCI also indicates one or more power control parameters to be used during transmission.

16. The method according to claim 15, wherein, The one or more power control parameters include at least one of the following: Path loss reference signal Nominal power parameters Path loss scaling factor Closed-loop index, Identifier for power control group, Or a combination thereof.

17. The method according to claim 15, wherein, Each of the plurality of beams may share one or more power control parameters or use different power control parameters.

18. The method according to claim 1, wherein, The TCI also indicates one or more codebook or non-codebook parameters to be used during transmission.

19. The method according to claim 18, wherein, The one or more codebook or non-codebook parameters include at least one of the following: SRS Resource Indicator (SRI), Precoding Matrix Indicator (PMI) Rank indicator (RI), Or a combination thereof.

20. The method according to claim 18, wherein, Each of the multiple beams uses different codebook or non-codebook parameters.

21. An apparatus for a user equipment (UE) for wireless communication, comprising: The first interface is configured to obtain Transmission Configuration Indicators (TCIs) for multiple beams that serve as a common beam. Wherein, the TCI indicates one or more reference signals that provide one or more attributes of each of the plurality of beams. Wherein, the TCI includes an identifier shared by each of the plurality of beams, and The identifier is in a field shared between the downlink beam configuration and the uplink beam configuration; The second interface is configured to output uplink data or control information using a first beam of the plurality of beams, at least through the identifier in the field shared by the uplink beam configuration; and The first interface is also configured to use the first beam to obtain downlink data or control information, at least through the identifier in the field shared by the downlink beam configuration.

22. The apparatus according to claim 21, wherein, At least one of the one or more reference signals provides at least two properties of the beam.

23. The apparatus according to claim 21, wherein, The TCI also indicates at least one serving cell identifier associated with at least one of the one or more reference signals, at least one bandwidth portion (BWP) identifier associated with at least one of the one or more reference signals, or a combination thereof.

24. The apparatus according to claim 21, wherein, The TCI indication corresponds to multiple sets of multiple beams, each set having one or more reference signals.

25. The apparatus according to claim 21, wherein, The TCI also indicates one or more power control parameters to be used during transmission.

26. The apparatus according to claim 25, wherein, The one or more power control parameters include at least one of the following: Path loss reference signal Nominal power parameters Path loss scaling factor Closed-loop index, Identifier for power control group, Or a combination thereof.

27. The apparatus according to claim 25, wherein, Each of the plurality of beams may share one or more power control parameters or use different power control parameters.

28. The apparatus according to claim 21, wherein, The TCI also indicates one or more codebook or non-codebook parameters to be used during transmission.

29. The apparatus according to claim 28, wherein, The one or more codebook or non-codebook parameters include at least one of the following: SRS Resource Indicator (SRI), Precoding Matrix Indicator (PMI) Rank indicator (RI), Or a combination thereof.

30. The apparatus according to claim 28, wherein, Each of the multiple beams uses different codebook or non-codebook parameters.

31. The apparatus according to claim 21, wherein, The one or more reference signals include at least one of the following: Synchronization signal, Channel State Information Reference Signal (CSI-RS) Detection Reference Signal (SRS), Positioning Reference Signal (PRS), Physical Random Access Channel (PRACH) signal, Demodulation Reference Signal (DMRS) Or a combination thereof.

32. The apparatus according to claim 21, wherein, The beam's one or more properties include at least one of the following: Doppler shift, Doppler extension, Average delay, Delayed spread, Space receiving filter, Spatial relationship information used for transmission Or a combination thereof.

33. The apparatus according to claim 21, wherein, The TCI also indicates one or more timing advance (TA) parameters to be used during transmission.

34. The apparatus according to claim 33, wherein, The one or more TA parameters include at least one of the following: TA value, The identifier of the TA group, Or a combination thereof.

35. The apparatus according to claim 33, wherein, Each of the plurality of beams may share one or more TA parameters or use different TA parameters.

36. The apparatus according to claim 21, wherein, The TCI also indicates one or more identifiers for one or more antenna panels associated with the device of the UE.

37. The apparatus according to claim 36, wherein, The one or more identifiers include at least one identifier associated with downlink communication and at least one identifier associated with uplink communication, or the one or more identifiers include at least one identifier associated with both downlink communication and uplink communication.

38. The apparatus according to claim 36, wherein, The one or more identifiers include at least one of the following: The identifier of the antenna port group, or The identifier for the beam group.

39. The apparatus according to claim 36, wherein, The one or more antenna panels include multiple antenna panels, each panel using different analog beams, uplink power control parameters, uplink timing advance parameters, or combinations thereof.

40. The apparatus according to claim 36, wherein, Each of the plurality of beams is associated with a different identifier for one or more antenna panels associated with the device of the UE.

41. An apparatus for a user equipment (UE) for wireless communication, comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and executable by the processor, cause the device to perform the following operations: Receive Transmission Configuration Indicators (TCIs) from the base station (BS) for multiple beams that serve as a common beam. Wherein, the TCI indicates one or more reference signals that provide one or more attributes of each of the plurality of beams. Wherein, the TCI includes an identifier shared by each of the plurality of beams, and The identifier is in a field shared between the downlink beam configuration and the uplink beam configuration; At least through the identifier in the shared field of the uplink beam configuration, the first beam of the plurality of beams is used to send uplink data or control information to the BS; and The first beam is used to receive downlink data or control information from the BS, at least through the identifier in the field shared by the downlink beam configuration.

42. The apparatus according to claim 41, wherein, The one or more reference signals include at least one of the following: Synchronization signal, Channel State Information Reference Signal (CSI-RS) Detection Reference Signal (SRS), Positioning Reference Signal (PRS), Physical Random Access Channel (PRACH) signal, Demodulation Reference Signal (DMRS) Or a combination thereof.

43. The apparatus according to claim 41, wherein, The beam's one or more properties include at least one of the following: Doppler shift, Doppler extension, Average delay, Delayed spread, Space receiving filter, Spatial relationship information used for transmission Or a combination thereof.

44. The apparatus according to claim 41, wherein, The TCI also indicates one or more timing advance (TA) parameters to be used during transmission.

45. The apparatus according to claim 44, wherein, The one or more TA parameters include at least one of the following: TA value, The identifier of the TA group, Or a combination thereof.

46. ​​The apparatus according to claim 44, wherein, Each of the plurality of beams may share one or more TA parameters or use different TA parameters.

47. The apparatus according to claim 41, wherein, The TCI also indicates one or more identifiers for one or more antenna panels associated with the device of the UE.

48. The apparatus according to claim 47, wherein, The one or more identifiers include at least one identifier associated with downlink communication and at least one identifier associated with uplink communication, or the one or more identifiers include at least one identifier associated with both downlink communication and uplink communication.

49. The apparatus according to claim 47, wherein, The one or more identifiers include at least one of the following: The identifier of the antenna port group, or The identifier for the beam group.

50. The apparatus according to claim 47, wherein, The one or more antenna panels include multiple antenna panels, each panel using different analog beams, uplink power control parameters, uplink timing advance parameters, or combinations thereof.

51. The apparatus according to claim 47, wherein, Each of the plurality of beams is associated with a different identifier for one or more antenna panels associated with the device of the UE.

52. The apparatus according to claim 41, wherein, At least one of the one or more reference signals provides at least two properties of the beam.

53. The apparatus according to claim 41, wherein, The TCI also indicates at least one serving cell identifier associated with at least one of the one or more reference signals, at least one bandwidth portion (BWP) identifier associated with at least one of the one or more reference signals, or a combination thereof.

54. The apparatus according to claim 41, wherein, The TCI indication corresponds to multiple sets of multiple beams, each set having one or more reference signals.

55. The apparatus according to claim 41, wherein, The TCI also indicates one or more power control parameters to be used during transmission.

56. The apparatus according to claim 55, wherein, The one or more power control parameters include at least one of the following: Path loss reference signal Nominal power parameters Path loss scaling factor Closed-loop index, Identifier for power control group, Or a combination thereof.

57. The apparatus according to claim 55, wherein, Each of the plurality of beams may share one or more power control parameters or use different power control parameters.

58. The apparatus according to claim 41, wherein, The TCI also indicates one or more codebook or non-codebook parameters to be used during transmission.

59. The apparatus according to claim 58, wherein, The one or more codebook or non-codebook parameters include at least one of the following: SRS Resource Indicator (SRI), Precoding Matrix Indicator (PMI) Rank indicator (RI), Or a combination thereof.

60. The apparatus according to claim 58, wherein, Each of the multiple beams uses different codebook or non-codebook parameters.

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