Beam Management Signaling

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a base station may transmit uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration to a user equipment, wherein the uplink beam management configuration is associated with the downlink beam management configuration. The base station may communicate with the user equipment according to the uplink beam management configuration and the downlink beam management configuration based at least in part on transmitting the uplink beam management configuration or the downlink beam management configuration. Many other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Greek Patent Application No. 20180100501, filed on November 2, 2018, entitled “BEAM MANAGEMENT SIGNALING,” and U.S. Non-Provisional Patent Application No. 16 / 669,305, filed on October 30, 2019, entitled “BEAM MANAGEMENT SIGNALING,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for beam management signaling. Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and / or the like). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless communication network may include several base stations (BS) that may support communications for several user equipments (UEs). User equipments (UEs) may communicate with base stations (BSs) via downlinks and uplinks. A downlink (or forward link) refers to a communication link from a BS to a UE, while an uplink (or reverse link) refers to a communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, and / or the like.

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

[0007] In some aspects, a method of wireless communication performed by a base station may include: transmitting uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration to a user equipment, wherein the uplink beam management configuration is associated with the downlink beam management configuration. The method may include: communicating with the user equipment according to the uplink beam management configuration and the downlink beam management configuration based at least in part on transmitting the uplink beam management configuration or the downlink beam management configuration.

[0008] In some aspects, a base station for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: transmit uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration to a user equipment, wherein the uplink beam management configuration is associated with the downlink beam management configuration. The memory and the one or more processors may be configured to: communicate with the user equipment according to the uplink beam management configuration and the downlink beam management configuration based at least in part on transmitting the uplink beam management configuration or the downlink beam management configuration.

[0009] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to: transmit uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration to a user equipment, wherein the uplink beam management configuration is associated with the downlink beam management configuration. The one or more instructions, when executed by one or more processors of the base station, may cause the one or more processors to: communicate with the user equipment according to the uplink beam management configuration and the downlink beam management configuration based at least in part on transmitting the uplink beam management configuration or the downlink beam management configuration.

[0010] In some aspects, an apparatus for wireless communication may include: a component for transmitting uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration to a user equipment, wherein the uplink beam management configuration is associated with the downlink beam management configuration. The apparatus may include: a component for communicating with the user equipment based at least in part on transmitting the uplink beam management configuration or the downlink beam management configuration and in accordance with the uplink beam management configuration and the downlink beam management configuration.

[0011] In some aspects, a method of wireless communication performed by a user equipment may include: receiving uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration from a base station, wherein the uplink beam management configuration is associated with the downlink beam management configuration. The method may include: determining the uplink beam management configuration and the downlink beam management configuration based at least in part on the uplink beam management configuration being associated with the downlink beam management configuration, and based at least in part on the uplink beam management configuration information or the downlink beam management configuration. The method may include: communicating with the base station based at least in part on determining the uplink beam management configuration and the downlink beam management configuration according to the uplink beam management configuration and the downlink beam management configuration.

[0012] In some aspects, a user device for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: receive uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration from a base station, wherein the uplink beam management configuration is associated with the downlink beam management configuration. The memory and the one or more processors may be configured to: determine the uplink beam management configuration and the downlink beam management configuration based at least in part on the uplink beam management configuration being associated with the downlink beam management configuration, and at least in part on the uplink beam management configuration information or the downlink beam management configuration. The memory and the one or more processors may be configured to: communicate with the base station based at least in part on determining the uplink beam management configuration and the downlink beam management configuration according to the uplink beam management configuration and the downlink beam management configuration.

[0013] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a user device, may cause the one or more processors to: receive uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration from a base station, wherein the uplink beam management configuration is associated with the downlink beam management configuration. The one or more instructions, when executed by one or more processors of a user device, may cause the one or more processors to: determine the uplink beam management configuration and the downlink beam management configuration based at least in part on the uplink beam management configuration being associated with the downlink beam management configuration, and based at least in part on the uplink beam management configuration information or the downlink beam management configuration. The one or more instructions, when executed by one or more processors of a user device, may cause the one or more processors to: communicate with the base station based on the uplink beam management configuration and the downlink beam management configuration based at least in part on determining the uplink beam management configuration and the downlink beam management configuration.

[0014] In some aspects, an apparatus for wireless communication may include: a component for receiving uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration from a base station, wherein the uplink beam management configuration is associated with the downlink beam management configuration. The apparatus may include: a component for determining the uplink beam management configuration and the downlink beam management configuration based at least in part on the uplink beam management configuration being associated with the downlink beam management configuration and based at least in part on the uplink beam management configuration information or the downlink beam management configuration. The apparatus may include: a component for communicating with a user equipment based at least in part on determining the uplink beam management configuration and the downlink beam management configuration and according to the uplink beam management configuration and the downlink beam management configuration.

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

[0016] The features and technical advantages of the examples according to the present disclosure have been outlined quite broadly above so that the following detailed description may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein in terms of their organization and method of operation and the associated advantages will be better understood through the following description in conjunction with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description and not as a definition of limitations of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order that the above-mentioned features of the present disclosure may be understood in detail, a more specific description of the content briefly summarized above may be made with reference to various aspects, some of which are shown in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and should not be considered as limiting the scope thereof, as the description may allow for other equivalent aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0018] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0019] Figure 2 is a block diagram conceptually illustrating an example of a base station communicating with a user equipment (UE) in a wireless communication network according to various aspects of the present disclosure.

[0020] Figure 3A is a block diagram conceptually illustrating an example of a frame structure in a wireless communication network according to various aspects of the present disclosure.

[0021] Figure 3B is a block diagram conceptually illustrating an example synchronization communication hierarchy in a wireless communication network in accordance with various aspects of the present disclosure.

[0022] Figure 4 is a block diagram conceptually illustrating an example slot format with a conventional cyclic prefix in accordance with various aspects of the present disclosure.

[0023] Figure 5 An example logical architecture of a distributed radio access network (RAN) according to various aspects of the present disclosure is shown.

[0024] Figure 6 An example physical architecture of a distributed RAN according to various aspects of the present disclosure is shown.

[0025] Figure 7 is a diagram illustrating an example of beam management signaling according to various aspects of the present disclosure.

[0026] Figure 8 is a diagram illustrating example processes performed, for example, by a base station according to various aspects of the present disclosure.

[0027] Fig. 9 is a diagram illustrating an example process performed, for example, by a user device, according to various aspects of the present disclosure. DETAILED DESCRIPTION

[0028] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms, and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and also fully convey the scope of the present disclosure to those skilled in the art. At least partially based on the teachings herein, it should be appreciated by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionality, or structures and functionality as supplements to the various aspects of the present disclosure set forth herein or in addition thereto. It should be understood that any aspect of the present disclosure disclosed herein can be implemented by one or more elements of the claims.

[0029] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0030] Note that while various aspects may be described herein using terminology typically associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applied in communication systems based on other generations, such as 5G and later generations, including NR technologies.

[0031] Figure 1 is a diagram showing a network 100 in which various aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include several BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0032] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1In the example shown in , BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NB", and "cell" may be used interchangeably herein.

[0033] In some aspects, the cell may not necessarily be fixed, and the geographic area of ​​the cell may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the access network 100 via various types of backhaul interfaces, such as direct physical connections, virtual networks, and / or the like using any suitable transmission network.

[0034] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or a UE) and transmit the transmissions of the data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that is capable of relaying transmissions for other UEs. Figure 1 In the example shown, a relay station 110d may communicate with the macro BS 110a and the UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0035] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0036] The network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0037] UEs 120 (e.g., 120a, 120b, 120c, 120d, 120e) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. UEs may also be referred to as access terminals, terminals, mobile stations, subscriber units, stations, etc. UEs may be cellular phones (e.g., smart phones), personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, laptop computers, cordless phones, wireless local loop (WLL) stations, tablet computers, cameras, gaming devices, netbooks, smartbooks, ultrabooks, medical devices or equipment, biometric sensors / devices, wearable devices (smart watches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart rings, smart bracelets)), entertainment devices (e.g., music or video devices or satellite radios), vehicle-mounted components or sensors, smart meters / sensors, industrial manufacturing equipment, global positioning system devices, or any other suitable device configured to communicate via wireless or wired media.

[0038] Some UEs may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. For example, MTC and eMTC UEs include robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to or to a network (e.g., a wide area network such as the Internet or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as user premises equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, etc.

[0039] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0040] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more sidelink channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0041] As mentioned above, Figure 1 Provided as an example only. Other examples may differ from combining Figure 1 The content described.

[0042] Figure 2 It shows that it can be Figure 1 1. Block diagram of a design 200 of base station 110 and UE 120 for one of the base stations and one of the UEs in FIG. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≥1 and R≥1.

[0043] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols where applicable, and may provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, position coding may be used to generate synchronization signals to convey additional information.

[0044] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations, and can provide received signals to demodulators (DEMOD) 254a to 254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 can obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on these received symbols where applicable, and provide detected symbols. Receive processor 258 can process (e.g., demodulate and decode) these 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 channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0045] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236, if applicable, and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0046] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other components of the UE 120 may perform one or more techniques associated with beam management signaling, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the can perform or direct e.g. Figure 8 The process of 800 Fig. 9 The operations of process 900 and / or other processes described herein may be performed. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. Scheduler 246 may schedule UEs to transmit data on the downlink and / or uplink.

[0047] In some aspects, UE 120 may include: a component for receiving uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration from a base station (e.g., base station 110), wherein the uplink beam management configuration is associated with the downlink beam management configuration (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, memory 282, etc.); a component for determining the uplink beam management configuration and the downlink beam management configuration based at least in part on the uplink beam management configuration being associated with the downlink beam management configuration and at least in part on the uplink beam management configuration information or the downlink beam management configuration (e.g., using controller / processor 280, etc.); a component for communicating with the base station based at least in part on determining the uplink beam management configuration and the downlink beam management configuration and based on the uplink beam management configuration and the downlink beam management configuration (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, memory 282, etc.); 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, controller / processor 280, memory 282, etc.); and / or the like. In some aspects, such components may include a combination of Figure 2 One or more components of UE 120 are described.

[0048] In some aspects, the base station 110 may include: components for transmitting uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration to a user equipment (e.g., UE 120), wherein the uplink beam management configuration is associated with the downlink beam management configuration (e.g., using the controller / processor 240, the transmit processor 220, the TX MIMO processor 230, the MOD 232, the antenna 234, etc.); components for communicating with the user equipment based at least in part on the transmitted uplink beam management configuration or the downlink beam management configuration and in accordance with the uplink beam management configuration and the downlink beam management configuration (e.g., using the antenna 234, the DEMOD 232, the MIMO detector 236, the receive processor 238, the controller / processor 240, etc.); and / or the like. In some aspects, such components may include a combination of Figure 2 One or more components of base station 110 are described.

[0049] As mentioned above, Figure 2 Provided as an example only. Other examples may differ from combining Figure 2 The content described.

[0050] Figure 3A An example frame structure 300 for frequency division duplex (FDD) in a telecommunication system (e.g., NR) is shown. The transmission timeline for each of the downlink and uplink may be divided into units of radio frames (sometimes also referred to as frames). Each radio frame may have a predetermined duration (e.g., 10 milliseconds (ms)) and may be divided into a set of Z (Z ≥ 1) subframes (e.g., indexed 0 to Z-1). Each subframe may have a predetermined duration (e.g., 1 ms) and may include a set of time slots (e.g., in Figure 3A Each subframe 2 is shown in m time slots, where m is a parameter set for transmission, such as 0, 1, 2, 3, 4, etc.). Each time slot may include a set of L symbol periods. For example, each time slot may include fourteen symbol periods (e.g., Figure 3A ), seven symbol periods, or another number of symbol periods. In the case where a subframe includes two slots (e.g., when m=1), the subframe may include 2L symbol periods, where the 2L symbol periods in each subframe may be assigned indices from 0 to 2L-1. In some aspects, the scheduling unit for FDD may be frame-based, subframe-based, slot-based, symbol-based, etc.

[0051] Although some techniques are described herein in conjunction with frames, subframes, time slots, etc., these techniques may be equally applicable to other types of wireless communication structures, which may be referred to in 5G NR using terms other than "frames," "subframes," "time slots," etc. In some aspects, a wireless communication structure may refer to a periodic, time-bounded communication unit defined by a wireless communication standard and / or protocol. Additionally or alternatively, the same may be used. Figure 3A The wireless communication structures shown have different configurations of wireless communication structures.

[0052] In some telecommunications (e.g., NR), a base station may transmit synchronization signals. For example, a base station may transmit a primary synchronization signal (PSS), a secondary synchronization signal (SSS), etc. on the downlink for each cell supported by the base station. The PSS and SSS may be used by the UE for cell search and acquisition. For example, the PSS may be used by the UE to determine symbol timing, and the SSS may be used by the UE to determine the physical cell identifier associated with the base station and the frame timing. The base station may also transmit a physical broadcast channel (PBCH). The PBCH may carry some system information, such as system information that supports initial access of the UE.

[0053] In some aspects, the base station may transmit the PSS, SSS, and / or PBCH according to a synchronization communication level (e.g., a synchronization signal (SS) level) including multiple synchronization communications (e.g., SS blocks), as described below in conjunction with Figure 3B as described.

[0054] Figure 3B is a block diagram conceptually illustrating an example SS hierarchy, which is an example of a synchronous communication hierarchy. Figure 3B As shown in FIG. 1 , the SS hierarchy may include an SS burst set, which may include a plurality of SS bursts (identified as SS burst 0 to SS burst B-1, where B is the maximum number of repetitions of the SS burst that may be transmitted by the base station). As further shown, each SS burst may include one or more SS blocks (identified as SS block 0 to SS block (b max_SS -1), where b max_SS -1 is the maximum number of SS blocks that can be carried by an SS burst). In some aspects, different SS blocks may be beamformed in different ways. A set of SS bursts may be transmitted by a wireless node periodically, such as every X milliseconds, e.g. Figure 3B In some aspects, the SS burst set may have a fixed or dynamic length, such as in Figure 3B is shown as Y milliseconds.

[0055] Figure 3B The SS burst set shown in is an example of a synchronous communication set, and other synchronous communication sets can be used in conjunction with the techniques described herein. In addition, Figure 3B The SS blocks shown in are examples of synchronous communications, and other synchronous communications may be used in conjunction with the techniques described herein.

[0056] In some aspects, an SS block includes resources that carry PSS, SSS, PBCH, and / or other synchronization signals (e.g., a third synchronization signal (TSS)) and / or synchronization channels. In some aspects, multiple SS blocks are included in an SS burst, and the PSS, SSS, and / or PBCH may be the same on each SS block of an SS burst. In some aspects, a single SS block may be included in an SS burst. In some aspects, an SS block may be at least four symbol periods in length, with each symbol carrying one or more of a PSS (e.g., occupying one symbol), a SSS (e.g., occupying one symbol), and / or a PBCH (e.g., occupying two symbols).

[0057] In some aspects, the symbols of the SS block are coherent, such as Figure 3B In some aspects, the symbols of the SS blocks are non-contiguous. Similarly, in some aspects, one or more SS blocks of an SS burst may be transmitted in contiguous radio resources (e.g., contiguous symbol periods) during one or more subframes. Additionally or alternatively, one or more SS blocks of an SS burst may be transmitted in non-contiguous radio resources.

[0058] In some aspects, an SS burst may have a burst period, whereby each SS block of the SS burst is transmitted by the base station according to the burst period. In other words, the SS blocks may be repeated during each SS burst. In some aspects, an SS burst set may have a burst set periodicity, whereby each SS burst of the SS burst set is transmitted by the base station according to a fixed burst set periodicity. In other words, the SS burst may be repeated during each SS burst set.

[0059] The base station may transmit system information, such as a system information block (SIB), on a physical downlink shared channel (PDSCH) in certain time slots. The base station may transmit control information / data on a physical downlink control channel (PDCCH) in C symbol periods of a time slot, where B may be configurable for each time slot. The base station may transmit traffic data and / or other data on the PDSCH in the remaining symbol periods of each time slot.

[0060] As mentioned above, Figure 3A and Figure 3B are provided as examples. Other examples may differ from those in combination with Figure 3A and Figure 3B The content described.

[0061] Figure 4An example slot format 410 with a conventional cyclic prefix is ​​shown. Available time-frequency resources may be partitioned into resource blocks. Each resource block may cover a set of subcarriers (e.g., 12 subcarriers) in a slot and may include a number of resource elements. Each resource element may cover one subcarrier in a symbol period (e.g., in time) and may be used to transmit one modulation symbol, which may be a real value or a complex value.

[0062] For FDD in some telecommunication systems (e.g., NR), an interlace structure may be used for each of the downlink and uplink. For example, Q interlaces with indices 0 to Q–1 may be defined, where Q may be equal to 4, 6, 8, 10, or some other value. Each interlace may include time slots spaced apart by Q frames. Specifically, interlace q may include time slots q, q+Q, q+2Q, etc., where q∈{0,…,Q–1}.

[0063] A UE may be located within the coverage of multiple BSs. One of these BSs may be selected to serve the UE. The serving BS may be selected based at least in part on various criteria such as received signal strength, received signal quality, path loss, etc. The received signal quality may be quantified by a signal-to-noise-and-interference ratio (SINR) or a reference signal received quality (RSRQ) or some other metric. The UE may operate in a dominant interference scenario where the UE observes high interference from one or more interfering BSs.

[0064] Although aspects of the examples described herein may be associated with NR or 5G technology, aspects of the present disclosure may be suitable for use with other wireless communication systems. A new radio (NR) may refer to a radio configured to operate according to a new air interface (e.g., an air interface different from an orthogonal frequency division multiple access (OFDMA)-based air interface) or a fixed transmission layer (e.g., different from the Internet Protocol (IP)). In various aspects, NR may utilize OFDM with CP (referred to herein as cyclic prefix OFDM or CP-OFDM) and / or SC-FDM on the uplink, may utilize CP-OFDM on the downlink and include support for half-duplex operation using time division duplex (TDD). In various aspects, NR may utilize OFDM with CP (referred to herein as CP-OFDM) and / or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) on the uplink, may utilize CP-OFDM on the downlink and include support for half-duplex operation using TDD. NR may include enhanced mobile broadband (eMBB) services targeting wide bandwidth (e.g., 80 megahertz (MHz) and above), millimeter wave (mmW) targeting high carrier frequencies (e.g., 60 gigahertz (GHz)), massive MTC (mMTC) targeting non-backward compatible MTC technologies, and / or mission critical services targeting ultra-reliable low latency communications (URLLC) services.

[0065] In some aspects, a single component carrier bandwidth of 100 MHz may be supported. NR resource blocks may span 12 subcarriers with a subcarrier bandwidth of 60 or 120 kilohertz (kHz) over a 0.1 millisecond (ms) duration. Each radio frame may include 40 slots and may have a length of 10 ms. Thus, each slot may have a length of 0.25 ms. Each slot may indicate a link direction (e.g., DL or UL) for data transmission and the link direction for each slot may be switched dynamically. Each slot may include DL / UL data and DL / UL control data.

[0066] Beamforming can be supported and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. MIMO configuration in DL can support up to 8 transmit antennas (multi-layer DL transmission with up to 8 streams) and up to 2 streams per UE. Multi-layer transmission with up to 2 streams per UE can be supported. Aggregation of multiple cells can be supported using up to 8 serving cells. Alternatively, NR can support different air interfaces other than OFDM-based interfaces. NR networks can include entities such as central units or distributed units.

[0067] As mentioned above, Figure 4 Provided as an example. Other examples may differ from combining Figure 4The content described.

[0068] Figure 5 An example logical architecture of a distributed RAN 500 according to various aspects of the present disclosure is shown. A 5G access node 506 may include an access node controller (ANC) 502. The ANC may be a central unit (CU) of the distributed RAN 500. The backhaul interface to the next generation core network (NG-CN) 504 may terminate at the ANC. The backhaul interface to the adjacent next generation access node (NG-AN) may terminate at the ANC. The ANC may include one or more TRPs 508 (which may also be referred to as BS, NR BS, Node B, 5G NB, AP, gNB or some other term). As described above, TRP may be used interchangeably with "cell".

[0069] The TRP 508 may be a distributed unit (DU). The TRP may be connected to one ANC (ANC 502) or more than one ANC (not shown). For example, for RAN sharing, Radio as a Service (RaaS), and service-specific AND deployments, the TRP may be connected to more than one ANC. The TRP may include one or more antenna ports. The TRP may be configured to serve services to the UE individually (e.g., dynamically selected) or jointly (e.g., jointly transmitted).

[0070] The fronthaul definition may be illustrated using the local architecture of the RAN 500. The architecture may be defined to support fronthaul solutions across different deployment types. For example, the architecture may be based at least in part on transport network capabilities (e.g., bandwidth, latency, and / or jitter).

[0071] The architecture may share features and / or components with LTE. According to various aspects, the next generation AN (NG-AN) 510 may support dual connectivity with NR. The NG-AN may share a common fronthaul for LTE and NR.

[0072] The architecture may enable collaboration between and among TRPs 508. For example, collaboration may be provisioned within a TRP and / or across TRPs via ANC 502. According to various aspects, an inter-TRP interface may not be needed / present.

[0073] According to various aspects, there may be a dynamic configuration of split logical functions within the architecture of the RAN 500. Packet Data Convergence Protocol (PDCP), Radio Link Control (RLC), Medium Access Control (MAC) protocols may be adaptively placed at the ANC or TRP.

[0074] According to various aspects, a BS may include a central unit (CU) (eg, ANC 502) and / or one or more distributed units (eg, one or more TRPs 508).

[0075] As mentioned above, Figure 5 Provided as an example only. Other examples may differ from combining Figure 5 The content described.

[0076] Figure 6 An example physical architecture of a distributed RAN 600 according to various aspects of the present disclosure is shown. A centralized core network unit (C-CU) 602 may host core network functions. The C-CU may be centrally deployed. C-CU functionality may be offloaded (e.g., to Advanced Wireless Services (AWS)) in an effort to handle peak capacity.

[0077] A centralized RAN unit (C-RU) 604 may host one or more ANC functions. Optionally, the C-RU may host core network functions locally. The C-RU may have a distributed deployment. The C-RU may be closer to the network edge.

[0078] A distributed unit (DU) 606 may host one or more TRPs. A DU may be located at the edge of the network with radio frequency (RF) functionality.

[0079] As mentioned above, Figure 6 Provided as an example only. Other examples may differ from combining Figure 6 The content described.

[0080] In some communication systems such as 5G or NR, the BS and the UE may communicate to perform beam management. For example, the BS may signal the UE to use a set of beams for uplink communication, for downlink communication, and / or for similar purposes. In addition, the BS and the UE may communicate to maintain the beam set to determine the channel quality associated with the beam, and then determine whether to continue to use the beam for uplink communication, for downlink communication, and / or for similar purposes. The BS and the UE may use a variety of different types of signaling for beam management. For example, the BS may transmit a radio resource control (RRC) message, a media access control (MAC) control element (CE) message, a downlink control information (DCI) message, etc. to the UE to indicate the beam management configuration.

[0081] However, signaling associated with beam management may cause network resources to be over-utilized. For example, the BS may transmit a first signaling to identify a first parameter associated with an uplink beam management configuration, and may transmit a second signaling to identify a second parameter associated with a downlink beam management configuration. In this case, the first signaling and the second signaling may use too many network resources, may cause power resources to be over-utilized by the BS and / or UE, and so on.

[0082] Some aspects described herein perform beam management signaling. For example, a BS may transmit signaling such as uplink beam management configuration information, and a UE may receive the signaling and determine both the uplink beam management configuration and the associated downlink beam management configuration. Similarly, in another case, a BS may transmit downlink beam management configuration information, and a UE may determine both the downlink beam management configuration and the associated uplink beam management configuration.

[0083] In addition, the BS may constrain the association of parameters based at least in part on the UE capabilities. For example, based at least in part on the UE capabilities, the BS may signal a first beam management parameter that may enable the UE to determine one or more second beam management parameters based at least in part on the UE capabilities. In this manner, the BS may reduce the amount of signaling overhead associated with beam management, thereby reducing utilization of network resources, utilization of power resources, etc. Moreover, based at least in part on the reduction in signaling, the BS may shorten the latency associated with setting the beam management configuration relative to using an increased amount of signaling.

[0084] Figure 7 7 is an example 700 illustrating beam management signaling according to various aspects of the present disclosure. Figure 7 As shown, example 700 includes BS 110 and UE 120 .

[0085] like Figure 7 As further shown in the reference numeral 710, the BS 110 may transmit downlink beam management configuration information or uplink beam management configuration information, wherein the downlink beam management configuration information may be one or more beam-related parameters of a beam-related parameter set for communication, and the uplink beam management configuration information may be one or more beam-related parameters of a beam-related parameter set for communication. For example, the BS 110 may transmit an indicator of a downlink (DL) quasi-co-location (QCL) parameter or an indicator of an uplink (UL) QCL. In this way, by transmitting only one of the downlink beam management configuration information or the uplink beam management configuration information and at least partially based on a mapping between the uplink parameters and the downlink parameters, the BS 110 reduces the signaling overhead of indicating the beam management configuration to the UE 120 for uplink and downlink communications.

[0086] In some aspects, BS 110 may transmit beam management configuration information (e.g., downlink or uplink beam management configuration information) to indicate a set of beam management parameters related to UE capabilities of UE 120. For example, when UE 120 is configured to support a single beam, BS 110 may transmit beam management configuration information that omits signaling of parameters used only for multi-beam communication. Additionally or alternatively, when UE 120 is configured to transmit on the uplink using the same beam as when UE 120 is configured to receive on the downlink, BS 110 may signal a change to, for example, an uplink beam, such that UE 120 changes both the uplink beam and the downlink beam. In this way, BS 110 reduces beam management signaling overhead relative to signaling both the uplink beam and the downlink beam. In some aspects, BS 110 may determine beam management signaling based at least in part on UE capabilities received when UE 120 enters connected mode.

[0087] In some aspects, BS 110 may transmit beam management configuration information indicating a set of beam management parameters based at least in part on a mapping of the set of beam management parameters. For example, BS 110 and UE 120 may store mapping information to map, for example, a control resource set (CORESET) transmission configuration indication (TCI) parameter to a corresponding physical uplink control channel (PUCCH) resource QCL parameter. In this case, when UE 120 receives, for example, downlink communication configuration information, UE 120 may determine a downlink communication configuration and an associated uplink communication configuration that may be mapped to the downlink communication configuration. In some aspects, the uplink communication configuration may be different from the downlink communication configuration to which the uplink communication configuration is mapped. For example, UE 120 may determine a first QCL information for downlink communication and a different second QCL information for uplink communication, which may be mapped to the first QCL information by sharing parameters, by having a fixed offset, etc.

[0088] Additionally or alternatively, BS 110 may transmit information identifying a CORESET parameter to indicate spatial relationship information for PUCCH resources. Additionally or alternatively, BS 110 may transmit physical downlink shared channel (PDSCH) TCI state information corresponding to sounding reference signal (SRS) resource information. For example, BS 110 may transmit a MAC CE to downselect a TCI state set, and UE 120 may downselect the TCI state set, and may also update the SRS resource set based at least in part on an association between the TCI state and the SRS resource. Similarly, when the RRC flag is set and BS 110 transmits information to change the downlink beam of, for example, CORESET 1, BS 110 may cause a change to the uplink beams of PUCCH resource 1 and PUCCH resource 2. Similarly, when another RRC flag is set and BS 110 transmits information to change the downlink beam of CORESET 2, BS 110 may cause changes to PUCCH resource 3 and PUCCH resource 4. In some aspects, BS 110 may transmit information to change beams associated with PDSCH, PDCCH, PUCCH, PUSCH, etc.

[0089] In some aspects, BS 110 may associate multiple parameters and may transmit information identifying a single parameter to indicate the multiple parameters. For example, BS 110 and UE 120 may store associations of transmit receive point (TRP) parameters, PUCCH resource parameters, SRS resource parameters, CORESET parameters, etc., and may transmit information explicitly identifying a single parameter (e.g., CORESET parameter) to enable UE 120 to determine each of the multiple parameters (e.g., corresponding TRP parameters, PUCCH resource parameters, and SRS resource parameters). In some aspects, BS 110 may define another parameter, such as a link identifier, that may correspond to multiple parameters. For example, BS 110 and UE 120 may store a table of parameter sets, and BS 110 may signal a link identifier corresponding to an index of the table to enable UE 120 to determine multiple parameters. Although some aspects may be described in terms of tables, other data structures are also possible.

[0090] like Figure 7As further shown by reference numeral 720, based at least in part on receiving downlink beam management configuration information or uplink beam management configuration information, and based at least in part on an association between downlink parameters and uplink parameters, UE 120 can determine a downlink beam management configuration and an uplink beam management configuration. For example, based at least in part on receiving an indicator of a downlink QCL, UE 120 can determine a downlink QCL and a corresponding uplink QCL. Similarly, based at least in part on receiving an indicator of an uplink QCL, UE 120 can determine an uplink QCL and a corresponding downlink QCL. In this way, relative to the need for separate signaling notifications for both uplink parameters and downlink parameters, UE 120 determines the downlink beam management configuration and the uplink beam management configuration with reduced signaling.

[0091] like Figure 7 As further shown in FIG. 730 , BS 110 and UE 120 communicate on a downlink or uplink according to a downlink beam management configuration and an uplink beam management configuration, respectively. For example, BS 110 may transmit to UE 120 and / or UE 120 may transmit to BS 110 using a beam and / or other associated beam management configuration parameters determined at least in part based on beam management configuration information received by UE 120 from BS 110.

[0092] As mentioned above, Figure 7 Provided as an example. Other examples may differ from combining Figure 7 The content described.

[0093] Figure 8 is a diagram illustrating an example process 800, performed, for example, by a BS, in accordance with various aspects of the present disclosure. Example process 800 is an example of a BS (eg, BS 110) enabling beam management signaling.

[0094] like Figure 8 As shown, in some aspects, process 800 may include: transmitting to a user equipment one of uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration, wherein the uplink beam management configuration is associated with the downlink beam management configuration (block 810). For example, a BS (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may: transmit to a user equipment one of uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration, as described above in conjunction with Figure 7In some aspects, an uplink beam management configuration is associated with a downlink beam management configuration.

[0095] like Figure 8 As shown, in some aspects, process 800 may include: communicating with a user device based at least in part on one of the uplink beam management configuration or the downlink beam management configuration according to both the uplink beam management configuration and the downlink beam management configuration (block 820). For example, the BS (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may: communicate with a user device based at least in part on one of the uplink beam management configuration or the downlink beam management configuration according to both the uplink beam management configuration and the downlink beam management configuration, as described above in conjunction with Figure 7 Described in more detail.

[0096] Process 800 may include other aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0097] In a first aspect, an uplink beam management configuration is one or more uplink beam management parameters of a set of parameters for communication, and a downlink beam management configuration is one or more downlink beam management parameters of a set of parameters for communication. In a second aspect, alone or in combination with one or more of the first aspect, one or more uplink beam management parameters are mapped to one or more downlink beam management parameters.

[0098] In a third aspect, alone or in combination with one or more of the first and second aspects, the downlink beam management configuration or the uplink beam management configuration is determined at least in part based on a user equipment capability associated with the user equipment. In a fourth aspect, alone or in combination with one or more of the first to third aspects, the BS is configured to transmit only one of the uplink beam management configuration information and the downlink beam management configuration information.

[0099] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, the downlink quasi-colocation parameters are mapped to uplink quasi-colocation parameters, so that the BS is configured to transmit downlink quasi-colocation parameters that identify the uplink beam management configuration, or the BS is configured to transmit uplink quasi-colocation parameters that identify the downlink beam management configuration. In the sixth aspect, alone or in combination with one or more of the first to fifth aspects, the mapping identifies the physical uplink control channel resource set corresponding to the control resource set, so that the transmission configuration indication parameter for the control resource set is mapped to the quasi-colocation parameter for the physical uplink control channel resource set. In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, the BS is configured to transmit a media access control (MAC) control element to identify the transmission configuration indication state set and set the sounding reference signal resource spatial relationship configuration.

[0100] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the mapping of the uplink beam management configuration to the downlink beam management configuration includes at least one mapping parameter, and the at least one mapping parameter includes at least one of a transmit reception point parameter, a physical uplink control channel resource parameter, a physical downlink shared channel resource parameter, a sounding reference signal parameter, a link identifier, a quasi-colocation parameter, or a control resource set parameter. In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the BS is configured to transmit uplink beam management configuration information or downlink beam management configuration information using at least one of the following: a radio resource control message, a media access control (MAC) control element message, a downlink control information message, or a dynamic signaling message.

[0101] although Figure 8 An example block diagram of process 800 is shown, but in some aspects, process 800 may include Figure 8 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 800. Additionally or alternatively, two or more blocks of process 800 may be executed in parallel.

[0102] Fig. 9 9 is a diagram illustrating an example process 900, performed, for example, by a BS, in accordance with various aspects of the present disclosure. Example process 900 is an example of a BS (eg, BS 110) enabling beam management signaling.

[0103] like Fig. 9As shown, in some aspects, process 900 may include: receiving from a base station one of uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration, wherein the uplink beam management configuration is associated with the downlink beam management configuration. (Block 910). For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may: receive from a base station one of uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration, as described above in conjunction with Figure 7 In some aspects, an uplink beam management configuration is associated with a downlink beam management configuration.

[0104] like Fig. 9 As shown, in some aspects, process 900 may include: communicating with a base station according to both an uplink beam management configuration and a downlink beam management configuration based at least in part on one of the uplink beam management configuration or the downlink beam management configuration (block 920). For example, a UE (e.g., using transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may: communicate with a base station according to both an uplink beam management configuration and a downlink beam management configuration based at least in part on determining the uplink beam management configuration and the downlink beam management configuration, as described above in conjunction with Figure 7 Described in more detail.

[0105] Process 900 may include other aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0106] In a first aspect, an uplink beam management configuration is one or more uplink beam management parameters of a set of parameters for communication, and a downlink beam management configuration is one or more downlink beam management parameters of a set of parameters for communication. In a second aspect, alone or in combination with one or more of the first aspect, one or more uplink beam management parameters are mapped to one or more downlink beam management parameters.

[0107] In a third aspect, alone or in combination with one or more of the first and second aspects, the downlink beam management configuration or the uplink beam management configuration is determined at least in part based on a user equipment capability associated with the user equipment. In a fourth aspect, alone or in combination with one or more of the first to third aspects, the UE is configured to receive only one of the uplink beam management configuration information and the downlink beam management configuration information.

[0108] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, a downlink quasi-colocation parameter is mapped to an uplink quasi-colocation parameter, so that the UE is configured to receive a downlink quasi-colocation parameter identifying an uplink beam management configuration, or the UE is configured to receive an uplink quasi-colocation parameter identifying a downlink beam management configuration. In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, a physical uplink control channel resource set corresponding to a control resource set is mapped to a transmission configuration indication parameter for the control resource set, so that the quasi-colocation parameter for the physical uplink control channel resource set is mapped to a quasi-colocation parameter for the physical uplink control channel resource set. In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the UE is configured to receive a media access control (MAC) control element to identify a transmission configuration indication state set and set a sounding reference signal resource spatial relationship configuration.

[0109] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the mapping of the uplink beam management configuration to the downlink beam management configuration includes at least one mapping parameter, and the at least one mapping parameter includes at least one of a transmit reception point parameter, a physical uplink control channel resource parameter, a physical downlink shared channel resource parameter, a sounding reference signal parameter, a link identifier, a quasi-co-location parameter, or a control resource set parameter. In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the UE is configured to receive uplink beam management configuration information or downlink beam management configuration information using at least one of the following: a radio resource control message, a media access control (MAC) control element message, a downlink control information message, or a dynamic signaling message.

[0110] although Fig. 9 An example block diagram of process 900 is shown, but in some aspects, process 900 may include Fig. 9 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 900. Additionally or alternatively, two or more blocks of the process 900 may be executed in parallel.

[0111] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired by practicing the various aspects.

[0112] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, or a combination of hardware and software. As used herein, a processor is implemented with hardware, firmware, or a combination of hardware and software.

[0113] Depending on the context, satisfying a threshold may mean that a value is greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc.

[0114] It will be apparent that the systems and / or methods described herein may be implemented in various forms of hardware, firmware, or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit the various aspects. Therefore, the operation and behavior of these systems and / or methods are described herein without reference to specific software code—it should be understood that software and hardware can be designed to implement these systems and / or methods based at least in part on the description herein.

[0115] Although specific feature combinations are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of possible aspects. In fact, many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. Although each dependent claim listed below can be directly subordinate to only one claim, the disclosure of various aspects includes that each dependent claim is combined with each other claim in this group of claims. The phrase quoting "at least one of" a column of items refers to any combination of these items, including single members. As an example, "at least one of a, b or c" is intended to cover: a, b, c, ab, ac, bc and abc, and any combination with multiple identical elements (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc, or any other ordering of a, b and c).

[0116] None of the elements, actions or instructions used herein should be interpreted as critical or essential unless explicitly described as such. Moreover, as used herein, the articles "one" and "an" are intended to include one or more items and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items (e.g., related items, non-related items, a combination of related items and non-related items, etc.), and can be used interchangeably with "one or more". In the case where only one item is intended, the term "one" or similar language is adopted. Moreover, as used herein, the terms "having" and the like are intended to be open terms. In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated.

Claims

1. A method of wireless communication performed by a base station (BS), comprising: transmitting, to a user equipment, one of uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration, wherein the uplink beam management configuration is associated with the downlink beam management configuration, wherein the uplink beam management configuration information includes an indicator of an uplink quasi co-location (QCL) parameter, The downlink beam management configuration information includes an indicator of a downlink QCL parameter, and in: determining a corresponding downlink QCL parameter using the indicator of the uplink QCL parameter based at least in part on the uplink beam management configuration information being transmitted, or determining a corresponding uplink QCL parameter using the indicator of the downlink QCL parameter based at least in part on the downlink beam management configuration information being transmitted; and Based at least in part on transmitting the one of the uplink beam management configuration information or the downlink beam management configuration information, communicating with the user equipment according to both the uplink beam management configuration and the downlink beam management configuration.

2. The method of claim 1, wherein the downlink beam management configuration or the uplink beam management configuration is determined at least in part based on user equipment capabilities associated with the user equipment. 3 . The method according to claim 1 , wherein the BS is configured to transmit only one of the uplink beam management configuration information and the downlink beam management configuration information.

4. The method of claim 1 , wherein the downlink QCL parameters are mapped to the uplink QCL parameters such that: The downlink beam management configuration information also identifies the uplink beam management configuration, or The uplink beam management configuration information also identifies the downlink beam management configuration.

5. The method according to claim 1, wherein a mapping identifier is a physical uplink control channel resource set corresponding to a control resource set, so that a transmission configuration indication parameter for the control resource set is mapped to a QCL parameter for the physical uplink control channel resource set.

6. The method of claim 1, wherein the BS is configured to transmit a medium access control (MAC) control element to identify a transmit configuration indication state set and to set a sounding reference signal resource spatial relation configuration.

7. The method of claim 1 , wherein the mapping of the uplink beam management configuration to the downlink beam management configuration comprises at least one mapping parameter, and The at least one mapping parameter comprises at least one of the following: Transmitting and receiving point parameters, Physical downlink shared channel resource parameters, Physical uplink control channel resource parameters, Probe reference signal parameters, Link Identifier, QCL parameters or Controls resource collection parameters.

8. The method of claim 1, wherein the BS is configured to transmit the uplink beam management configuration information or the downlink beam management configuration information using at least one of: Radio Resource Control Messages, Media Access Control (MAC) control element message, Downlink Control Information Message or Dynamic signaling message.

9. The method of claim 1 , wherein the uplink beam management configuration is one or more uplink beam management parameters of a set of parameters for communication; and The downlink beam management configuration is one or more downlink beam management parameters of the parameter set used for communication.

10. The method of claim 9, wherein the one or more uplink beam management parameters are mapped to the one or more downlink beam management parameters.

11. A method of wireless communication performed by a user equipment (UE), comprising: receiving, from a base station, one of uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration, wherein the uplink beam management configuration is associated with the downlink beam management configuration, wherein the uplink beam management configuration information includes an indicator of an uplink quasi co-location (QCL) parameter, and The downlink beam management configuration information includes an indicator of a downlink QCL parameter, and determining, based at least in part on receiving the uplink beam management configuration information from the base station, a corresponding downlink QCL parameter for the downlink beam management configuration using the indicator of the uplink QCL parameter, or determining, based at least in part on receiving the downlink beam management configuration information from the base station, a corresponding uplink QCL parameter for the uplink beam management configuration using the indicator of the downlink QCL parameter; and Communicate with the base station according to both the uplink beam management configuration and the downlink beam management configuration based at least in part on determining the corresponding uplink QCL parameters for the uplink beam management configuration or determining the corresponding downlink QCL parameters for the downlink beam management configuration.

12. The method according to claim 11, further comprising: The uplink beam management configuration and the downlink beam management configuration are determined based at least in part on the uplink beam management configuration being associated with the downlink beam management configuration, and based at least in part on the uplink beam management configuration information or the downlink beam management configuration information.

13. The method of claim 11, wherein the downlink beam management configuration or the uplink beam management configuration is determined at least in part based on UE capabilities associated with the UE.

14. The method according to claim 11, wherein the UE is configured to receive only one of the uplink beam management configuration information and the downlink beam management configuration information.

15. The method of claim 11, wherein the downlink QCL parameters are mapped to the uplink QCL parameters such that: The downlink beam management configuration also identifies the uplink beam management configuration, or The uplink beam management configuration also identifies the downlink beam management configuration.

16. The method according to claim 11, wherein a mapping identifies a physical uplink control channel resource set corresponding to a control resource set, so that a transmission configuration indication parameter for the control resource set is mapped to a QCL parameter for the physical uplink control channel resource set.

17. The method of claim 11, wherein the UE receives a medium access control (MAC) control element to identify a transmit configuration indication state set and to set a sounding reference signal resource spatial relation configuration.

18. The method of claim 11, wherein the mapping of the uplink beam management configuration to the downlink beam management configuration comprises at least one mapping parameter, and The at least one mapping parameter comprises at least one of the following: Transmitting and receiving point parameters, Physical uplink control channel resource parameters, Physical downlink shared channel resource parameters, Probe reference signal parameters, Link Identifier, QCL parameters or Controls resource collection parameters.

19. The method according to claim 11, wherein the UE receives the uplink beam management configuration information or the downlink beam management configuration information using at least one of the following: Radio Resource Control Messages, Media Access Control (MAC) control element message, Downlink Control Information Message or Dynamic signaling message.

20. The method of claim 11, wherein the uplink beam management configuration is one or more uplink beam management parameters of a parameter set for communication, and The downlink beam management configuration is one or more downlink beam management parameters of the parameter set used for communication.

21. The method of claim 20, wherein the one or more uplink beam management parameters are mapped to the one or more downlink beam management parameters.

22. A base station (BS) for wireless communication, comprising: Memory; as well as One or more processors operably coupled to the memory, the memory and the one or more processors configured to: transmitting, to a user equipment, one of uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration, wherein the uplink beam management configuration is associated with the downlink beam management configuration, wherein the uplink beam management configuration information includes an indicator of an uplink quasi co-location (QCL) parameter, The downlink beam management configuration information includes an indicator of a downlink QCL parameter, and in: determining a corresponding downlink QCL parameter using the indicator of the uplink QCL parameter based at least in part on the uplink beam management configuration information being transmitted, or determining a corresponding uplink QCL parameter using the indicator of the downlink QCL parameter based at least in part on the downlink beam management configuration information being transmitted; as well as Based at least in part on transmitting the one of the uplink beam management configuration information or the downlink beam management configuration information, communicating with the user equipment according to both the uplink beam management configuration and the downlink beam management configuration.

23. The BS of claim 22, wherein the downlink beam management configuration or the uplink beam management configuration is determined at least in part based on user equipment capabilities associated with the user equipment.

24. The BS according to claim 22, wherein the BS is configured to transmit only one of the uplink beam management configuration information and the downlink beam management configuration information.

25. The BS of claim 22, wherein the uplink beam management configuration is one or more uplink beam management parameters of a parameter set for communication; and The downlink beam management configuration is one or more downlink beam management parameters of the parameter set used for communication.

26. The BS of claim 25, wherein the one or more uplink beam management parameters are mapped to the one or more downlink beam management parameters.

27. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors operably coupled to the memory, the memory and the one or more processors configured to: receiving, from a base station, one of uplink beam management configuration information identifying an uplink beam management configuration or downlink beam management configuration information identifying a downlink beam management configuration, wherein the uplink beam management configuration is associated with the downlink beam management configuration, wherein the uplink beam management configuration information includes an indicator of an uplink quasi co-location (QCL) parameter, and The downlink beam management configuration information includes an indicator of a downlink QCL parameter, and determining, based at least in part on receiving the uplink beam management configuration information from the base station, the corresponding downlink QCL parameter for a downlink beam management configuration using the indicator of the uplink QCL parameter, or determining, based at least in part on receiving the downlink beam management configuration information from the base station, the corresponding uplink QCL parameter for an uplink beam management configuration using the indicator of the downlink QCL parameter; as well as Communicate with the base station according to both the uplink beam management configuration and the downlink beam management configuration based at least in part on determining the corresponding uplink QCL parameters for the uplink beam management configuration or the corresponding downlink QCL parameters for the downlink beam management configuration.

28. The UE of claim 27, wherein the one or more processors are further configured to: The uplink beam management configuration and the downlink beam management configuration are determined based at least in part on the uplink beam management configuration being associated with the downlink beam management configuration, and based at least in part on the uplink beam management configuration information or the downlink beam management configuration.

29. The UE of claim 27, wherein the uplink beam management configuration is one or more uplink beam management parameters of a parameter set for communication; and The downlink beam management configuration is one or more downlink beam management parameters of the parameter set used for communication.

30. The UE of claim 29, wherein the one or more uplink beam management parameters are mapped to the one or more downlink beam management parameters.

31. An apparatus for wireless communication performed at a base station (BS), the apparatus comprising means for performing the method of any one of claims 1-10.

32. An apparatus for wireless communication executed at a user equipment (UE), the apparatus comprising means for performing the method of any one of claims 11-21.

33. A computer-readable medium having program code recorded thereon, wherein the program code can be executed by one or more processors of a base station (BS) to cause the processors to perform the method of any one of claims 1-10.

34. A computer-readable medium having program code recorded thereon, wherein the program code can be executed by one or more processors of a user equipment (UE) to cause the processors to perform the method according to any one of claims 11-21.

Images