Default physical downlink shared channel downlink beamforming with self-interference

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive scheduling information that schedules a physical downlink shared channel (PDSCH) communication for the UE and select a downlink beam for receiving the PDSCH communication from a set of available downlink beams associated with an uplink beam, the uplink beam to be used by the UE for uplink transmission in one or more symbols for which the PDSCH communication is scheduled. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to Greek Patent Application No. 20190100575, filed on December 23, 2019, entitled “DEFAULT PHYSICAL DOWNLINK SHARED CHANNEL DOWNLINK BEAM DETERMINATION WITH SELF-INTERFERENCE,” and U.S. Non-Provisional Patent Application No. 16 / 877,005, filed on May 18, 2020, entitled “DEFAULT PHYSICAL DOWNLINK SHARED CHANNEL DOWNLINK BEAM DETERMINATION WITH SELF-INTERFERENCE,” which are expressly incorporated by reference into this patent application. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for default physical downlink shared channel downlink beam determination with self-interference. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies capable of supporting 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 / 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 multiple base stations (BSs) that can support communication for multiple user equipment (UEs). User equipment (UEs) can communicate with a base station (BS) via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, and an uplink (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, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The aforementioned multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables diverse user devices to communicate at the city, national, regional, and even global levels. New Radio (NR), also known 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 increasing spectral efficiency, reducing costs, improving services, leveraging new spectrum, and better integrating with other open standards. These open standards use orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) 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), as well as support for beamforming, multiple-input, multiple-output (MIMO) antenna technology, and carrier aggregation. However, as demand for mobile broadband access continues to grow, further improvements to LTE and NR technologies are needed. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunications standards that adopt them. Summary of the Invention

[0007] In some aspects, a wireless communication method performed by a user equipment (UE) may include: receiving scheduling information that schedules physical downlink shared channel (PDSCH) communication for the UE; and selecting a received downlink beam for PDSCH communication from a set of available downlink beams associated with an uplink beam, which uplink beam will be used by the UE for uplink transmission in one or more symbols of the scheduled PDSCH communication.

[0008] In some aspects, a wireless communication method performed by a base station may include: sending scheduling information that schedules PDSCH communication for a UE; and selecting a downlink beam for transmission of the PDSCH communication from a set of available downlink beams associated with the uplink beam, which uplink beam will be used by the UE for uplink transmission in one or more symbols of the scheduled PDSCH communication.

[0009] In some aspects, a UE 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 scheduling information that schedules PDSCH communication for the UE and select a downlink beam for reception of the PDSCH communication from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission in one or more symbols for which the PDSCH communication is scheduled.

[0010] 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 send scheduling information that schedules PDSCH communication for a UE and select a downlink beam for transmission of the PDSCH communication from a set of available downlink beams associated with the uplink beam to be used by the UE for uplink transmission in one or more symbols for the scheduled PDSCH communication.

[0011] 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 UE, may cause the one or more processors to: receive scheduling information scheduling PDSCH communication for the UE; and select a downlink beam for reception of the PDSCH communication from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission in one or more symbols for which the PDSCH communication is scheduled.

[0012] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication, which, when executed by one or more processors of a base station, may cause the one or more processors to: send scheduling information that schedules PDSCH communication for a UE; and select a downlink beam for transmission of the PDSCH communication from a set of available downlink beams associated with the uplink beam, which uplink beam will be used by the UE for uplink transmission in one or more symbols of the scheduled PDSCH communication.

[0013] In some aspects, an apparatus for wireless communication may include: a component for receiving scheduling information that schedules PDSCH communication for the apparatus; and a component for selecting a received downlink beam for PDSCH communication from a set of available downlink beams associated with the uplink beam, which is to be used by the apparatus for uplink transmission in one or more symbols of the scheduled PDSCH communication.

[0014] In some aspects, an apparatus for wireless communication may include: a component for sending scheduling information that schedules PDSCH communication for a UE; and a component for selecting a downlink beam for transmission of the PDSCH communication from a set of available downlink beams associated with the uplink beam, which uplink beam will be used by the UE for uplink transmission in one or more symbols of the scheduled PDSCH communication.

[0015] The aspects generally include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as substantially described herein with reference to and illustrated by the figures and description.

[0016] The features and technical advantages of the examples according to the present disclosure have been outlined in rather broad terms so that the detailed description that follows may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily used as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein, their organization and method of operation, and associated advantages will be better understood from the following description when considered 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 to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to enable a detailed understanding of the above-described features of the present disclosure, reference may be made to a more particular description of some aspects briefly summarized above, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may represent 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 UE in a wireless communication network according to various aspects of the present disclosure.

[0020] Figures 3A-3C is a diagram illustrating various duplex modes in a radio access network according to various aspects of the present disclosure.

[0021] Figure 4 is a diagram illustrating an example of beamforming in a wireless communication system according to various aspects of the present disclosure.

[0022] Figure 5-7 is a diagram illustrating an example of default physical downlink shared channel (PDSCH) downlink beam determination with self-interference in accordance with various aspects of the present disclosure.

[0023] Figure 8 is a diagram illustrating example processes performed, for example, by a user device, according to various aspects of the present disclosure.

[0024] Figure 9 is a diagram illustrating example processes performed, for example, by a base station, according to various aspects of the present disclosure.

[0025] Figure 10 is a conceptual data flow diagram illustrating an example of data flow between different modules / components / components in an example apparatus.

[0026] Figure 11 is a diagram illustrating an example of a hardware implementation of an apparatus employing a processing system.

[0027] Figure 12 is a conceptual data flow diagram illustrating an example of data flow between different modules / components / assemblies in an example apparatus.

[0028] Figure 13 is a diagram illustrating an example of a hardware implementation of an apparatus employing a processing system. DETAILED DESCRIPTION

[0029] The various aspects of the present disclosure will be 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 presented throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should understand that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement an apparatus or practice method. In addition, the scope of the present disclosure is intended to cover such an apparatus or method that uses other structures, functions, or structures and functions in addition to or different from the various aspects of the present disclosure set forth herein to practice. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.

[0030] Several aspects of telecommunications systems will now be described with reference to various devices and techniques. These devices and techniques are described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0031] It should be noted that although terms generally associated with 3G and / or 4G wireless technologies may be used herein to describe various aspects, various aspects of the present disclosure may be applicable to communication systems based on other generations, such as 5G and later communication systems, including NR technology.

[0032] Figure 1 is a schematic diagram illustrating a wireless 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 multiple 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 the coverage area of a BS and / or a BS subsystem serving that coverage area, depending on the context in which the term is used.

[0033] 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., a radius of several kilometers) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). The BS of a macro cell may be referred to as a macro BS. The BS of a pico cell may be referred to as a pico BS. The BS of a femto cell may be referred to as a femto BS or a home BS. In Figure 1In the example shown, BS 110a may be a macro BS for macrocell 102a, BS 110b may be a pico BS for picocell 102b, and BS 110c may be a femto BS for femtocell 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.

[0034] In some aspects, the cells are not necessarily stationary, and the geographic area of the cells can move depending on the location of the mobile BS. In some aspects, the BSs can be interconnected with each other and / or 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, etc.

[0035] The wireless network 100 may also 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 may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown, a relay station 110d may communicate with a macro BS 110a and a 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.

[0036] The wireless network 100 may be a heterogeneous network that includes different types of BSs, such as 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 impacts 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).

[0037] The network controller 130 may be coupled to a group 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, for example, directly or indirectly via a wireless backhaul or a wired backhaul.

[0038] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be fixed or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber 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 computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biosensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0039] Some UEs may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, 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. For example, a wireless node may provide connectivity to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included in a housing that houses components of UE 120 (e.g., a processor component, a memory component, etc.).

[0040] Generally, 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, 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.

[0041] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary for communicating with each other). For example, the UEs 120 can 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, the UEs 120 can perform scheduling operations, resource selection operations, and / or other operations performed by the base station 110 as described elsewhere herein.

[0042] As mentioned above, Figure 1 are provided as examples. Other examples may differ from those described in Figure 1 described.

[0043] Figure 2 A block diagram shows a design 200 of a base station 110 and a UE 120, which may be Figure 1 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.

[0044] At the base station 110, a transmit processor 220 may receive data for one or more UEs from a 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 that 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) 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 (if applicable), and may provide T output symbol streams to T modulators (MODs) 232a through 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 upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in more detail below, position coding may be utilized to generate synchronization signals to convey additional information.

[0045] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a 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.

[0046] 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 the 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 antennas 234, processed by the demodulators 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 a 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.

[0047] 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 controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or the like may perform one or more techniques associated with default physical downlink shared channel (PDSCH) downlink beam determination with self-interference, as described in more detail elsewhere herein. Figure 2 Any other component of the may perform or direct e.g. Figure 8 The process of 800 Figure 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. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, when one or more instructions are executed by one or more processors of base station 110 and / or UE 120, they may perform or direct, for example, Figure 8 The process of 800 Figure 9 The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0048] In some aspects, the UE 120 may include means for receiving scheduling information that schedules PDSCH communications for the UE 120; means for selecting a downlink beam for reception of the PDSCH communications from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission in one or more symbols for which the PDSCH communications are scheduled; and / or the like. In some aspects, these means may include means for combining Figure 2 One or more components of the UE 120 are depicted, such as the controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and the like.

[0049] In some aspects, the base station 110 may include means for transmitting scheduling information that schedules PDSCH communications for the UE 120; means for selecting a downlink beam for transmission of the PDSCH communications from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission in one or more symbols for which the PDSCH communications are scheduled; and / or the like. In some aspects, these means may include means for transmitting scheduling information that schedules PDSCH communications for the UE 120; means for selecting a downlink beam for transmission of the PDSCH communications from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission in one or more symbols for which the PDSCH communications are scheduled; and / or the like. Figure 2One or more components of base station 110 are depicted, such as antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and the like.

[0050] As mentioned above, Figure 2 are provided as examples. Other examples may differ from those described in Figure 2 described.

[0051] Figures 3A-3C is a diagram illustrating various duplex modes in a radio access network according to various aspects of the present disclosure. Figure 3A Depicts a time division duplex (TDD) communication mode between a UE and a base station. TDD means that only one endpoint (e.g., one of the UE or the base station) can send information to the other endpoint (e.g., the other of the UE or the base station) at a time. For example, in TDD, transmissions in different directions on a given channel are separated from each other using time division multiplexing. That is, at certain times, the channel is dedicated to transmissions in one direction, and at other times, the channel is dedicated to transmissions in the other direction. In some cases, the direction may change rapidly, such as several times per time slot. Thus, as Figure 3A As shown, downlink (DL) communications 302 and uplink (UL) communications 304 are separated in time.

[0052] Figure 3B Depicts the frequency division duplex (FDD) communication mode between the UE and the base station. FDD means that two endpoints can communicate with each other simultaneously on different frequencies (e.g., different frequency bands, subcarrier sets, or resource blocks). In FDD mode, Figure 3B As shown in , transmission in different directions operates at different carrier frequencies. Figure 3B As shown, DL communications 302 are separated in frequency from UL communications 304. In some cases, FDD may be referred to as full-duplex because a wireless communication device can simultaneously transmit and receive, with transmission using a first frequency and reception using a second frequency. Because a device in FDD simultaneously transmits and receives using different frequencies, this full-duplex mode may be referred to as out-of-band full-duplex.

[0053] Figure 3C Describes the true full-duplex communication mode between UE and base station. In true full-duplex mode, Figure 3C As shown, transmissions in different directions operate on the same carrier frequency or within overlapping bandwidths. Figure 3CIn the example shown, DL communications 302 overlap with UL communications 304 in both time and frequency. Therefore, when operating in true full-duplex mode, the UE and base station are configured to transmit and receive simultaneously within the overlapping bandwidth. That is, in this mode, the devices can simultaneously transmit and receive using the same frequency. Therefore, this full-duplex mode can be referred to as in-band full-duplex.

[0054] As mentioned above, Figures 3A-3C is an example. Other examples may differ from the Figures 3A-3C described.

[0055] Figure 4 is a diagram illustrating an example 400 of beamforming in a wireless communication system in accordance with various aspects of the present disclosure. Figure 6 Communication between a base station 110 and a UE 120 using beamformed signals is shown.

[0056] In NR, control and data can be transmitted between UE 120 and base station 110 via one or more beams (e.g., paths). Each beam can have a different spatial relationship with the other beams. For example, base station 110 can use one or more downlink beams to transmit downlink information, and UE 120 can receive the downlink information. In this case, base station 110 can use a transmit (TX) downlink beam (or base station downlink beam) to transmit downlink information to UE 120, and UE 120 can use a receive (RX) downlink beam (or UE downlink beam) to receive downlink information from base station 110. Similarly, UE 120 can use one or more uplink beams to transmit uplink information, and base station 110 can receive uplink information. In this case, UE 120 can use a TX uplink beam (or UE uplink beam) to transmit uplink information to base station 110, and base station 110 can use an RX uplink beam (or base station uplink beam) to receive uplink information from UE 120.

[0057] In some aspects, base station 110 and UE 120 may communicate using a beam pair link (BPL) comprising a pair of downlink / uplink beams (e.g., a downlink beam of base station 110 and an uplink beam of UE 120). Each of the downlink beam and the uplink beam may be selected from a corresponding beam set. Figure 4In the example shown, the downlink beam set includes eight different beams 421, 422, 423, 424, 425, 426, 427, 428, each associated with a different spatial beam direction. As further shown, the uplink beam set includes four different beams 431, 432, 433 and 434, each associated with a different spatial beam direction. It should be noted that although some beams are shown as being adjacent to each other, this arrangement can be different in different aspects. In some aspects, beams transmitted during the same symbol may not be adjacent to each other. In some examples, base station 110 and / or UE 120 can transmit more or fewer beams distributed in all directions (e.g., 360 degrees).

[0058] In some aspects, the base station 110 may be configured to scan or transmit each of the downlink beams 421, 422, 423, 424, 425, 426, 427, 428 during a synchronization time slot. For example, the base station 110 may transmit a downlink reference signal, such as a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS), on each downlink beam in different beam directions during the synchronization time slot. The transmission of the downlink reference signal may occur periodically (e.g., as configured by the base station 110 via radio resource control (RRC) signaling), semi-persistently (e.g., as configured by the base station 110 via RRC signaling and activated / deactivated via medium access control-control element (MAC-CE) signaling), or aperiodically (e.g., as triggered by the base station 110 via downlink control information (DCI)).

[0059] The UE 120 may use the received downlink reference signals to identify the downlink beam and perform downlink beam quality measurements on the downlink reference signals, such as reference signal received power (RSRP) measurements or reference signal received quality (RSRQ) measurements. The UE 120 may also perform additional beam quality measurements on the downlink reference signals received on one or more downlink beams, such as signal strength (e.g., received signal strength indicator (RSSI)) or interference / noise (e.g., signal-to-interference-and-noise ratio (SINR)) measurements.

[0060] UE 120 may then transmit a beam measurement report that includes the corresponding beam index and RSRP and / or other beam measurement(s) for each downlink beam 421-428. Base station 110 may then determine, based on the beam measurement report, a downlink beam (e.g., downlink beam 424) on which to transmit unicast downlink control information and / or user data traffic with the highest quality to UE 120. Transmission of the beam measurement report may occur semi-continuously or aperiodically.

[0061] In other examples, when the channel is reciprocal (e.g., the downlink and uplink channel qualities are the same), the base station 110 can derive the downlink beam. The derivation can be based on uplink measurements, for example, by measuring the received power, quality, or other variables of the corresponding sounding reference signal (SRS) or other uplink reference signal sent on each uplink beam 431, 432, 433, and 434 in the uplink beam set. In some examples, the base station 110 can select not only the downlink beam but also the uplink beam (e.g., beam 433) as part of the BPL based on received beam measurement reports and / or uplink measurements. In other examples, the UE 120 can select the uplink beam (e.g., beam 433) based on downlink measurements or other factors. For example, the UE 120 can be configured for uplink non-codebook-based MIMO or uplink beam management.

[0062] In some examples, base station 110 may pre-configure each reference signal (e.g., a downlink reference signal and an uplink reference signal) to be transmitted between UE 120 and base station 110 using a specific time-frequency resource and a specific beam / path, and provide configuration information of each reference signal to UE 120 via, for example, RRC signaling. In some examples, the configuration information may include a transmission configuration indication (TCI) state indicating quasi-co-location (QCL) information (e.g., QCL type and time-frequency resource) of the reference signal.

[0063] Examples of QCL information include one or more of Doppler shift, Doppler spread, average delay, delay spread, and spatial RX parameters (e.g., spatial properties of a beam). The spatial properties of a beam may include, for example, at least one of a beam direction, a beam width, or an associated downlink reference signal (e.g., a spatial QCL relationship with a downlink reference signal, such as an SSB or CSI-RS). In some examples, each of the reference signals may be pre-configured with the same or different TCI states (e.g., for downlink reference signals) or spatial QCL relationships (e.g., for uplink reference signals) relative to the spatial beam or BPL in which the reference signal is transmitted. Thus, each reference signal may be transmitted on the same or different beams or BPLs.

[0064] When operating in TDD (half-duplex) or FDD mode, selection of a downlink beam based on downlink and / or uplink measurements performed separately (e.g., without considering communications occurring in the opposite direction) can produce the optimal downlink beam for communication between UE 120 and base station 110. However, when operating in full-duplex mode (e.g., in-band full-duplex mode), device self-interference due to concurrent transmission and reception in overlapping bandwidths can severely degrade the performance of UE reception via the selected downlink beam. Self-interference can be caused by local reflection and refraction of power from the transmit antenna to the receive antenna and / or crosstalk between the transmit and receive chains. Although various mechanisms can be used to reduce self-interference, such as RF circuit isolation between the transmit and receive chains, improved antenna design to avoid power backflow from the transmit antenna to the receive antenna, and analog / digital self-interference cancellation to eliminate transmit leakage current, downlink transmissions received on the selected downlink beam may be affected by strong self-interference from concurrent uplink transmissions.

[0065] Thus, in various aspects of the present disclosure, downlink beam selection can further take into account self-interference caused by concurrent uplink transmissions. In some examples, when operating in full-duplex mode, UE120 can measure downlink beam quality in the presence of self-interference to identify an available downlink beam set for each uplink beam. For example, for each uplink beam 431-434, the UE can obtain a beam quality measurement associated with each downlink beam 421-428 to identify the corresponding available downlink beam set. In some examples, the downlink beams 421-428 on which the beam quality measurements are obtained may include a configured or activated downlink beam set or a corresponding subset thereof. The beam quality measurements may include one or more of RSRP, RSRQ, RSSI, and SINR. In some examples, the SINR may include a self-interference contribution.

[0066] In some aspects, UE 120 may send a report to base station 110 indicating the corresponding available downlink beam sets for one or more uplink beams. In some examples, the report may include a beam measurement report sent from UE 120 to base station 110. In other examples, the report may include a separate report generated from UE 120 and sent to base station 110. In some examples, the report sent to base station 110 may further include corresponding QCL information for each downlink beam in the available downlink beam set. In some examples, UE 120 may further identify an unavailable downlink beam set for each uplink beam and include the unavailable downlink beam set for at least one uplink beam in the report.

[0067] In some aspects, UE 120 may determine a set of available downlink beams and a set of unavailable downlink beams by comparing beam quality measurements to one or more thresholds. For example, for each uplink beam, UE 120 may compare the beam quality measurement associated with each downlink beam to a first threshold and identify a set of available downlink beams for which the beam quality measurement exceeds the first threshold. As another example, for each uplink beam, UE 120 may further compare the beam quality measurement associated with each downlink beam to a second threshold and identify a set of unavailable downlink beams for which the beam quality measurement is less than the second threshold. UE 120 may receive a threshold amount and a hysteresis value from base station 110 and determine the first threshold and the second threshold based on the threshold amount and the hysteresis value. For example, UE 120 may determine the first threshold by adding the hysteresis value to the threshold amount and determine the second threshold by subtracting the hysteresis value from the threshold amount.

[0068] In some cases, as described above, UE 120 and base station 110 may perform beam management to determine favorable uplink beams (e.g., TX uplink beams and / or RX uplink beams) and downlink beams (e.g., TX downlink beams and / or RX downlink beams) for communication. In some cases, base station 110 may indicate to UE 120 the downlink beam to be used for PDSCH communication (e.g., PDSCH downlink beams) (sometimes referred to as QCL-Type D relationships), for example, in a DCI that schedules PDSCH communication (e.g., by indicating a TCI state in a TCI state field of the DCI, which may indicate QCL-Type D). However, in some cases, base station 110 may not indicate a PDSCH downlink beam in the DCI (e.g., according to an RRC configuration), or UE 120 may not be able to receive PDSCH communications using the indicated downlink beam, such as when UE 120 does not have sufficient time to switch to a downlink beam before receiving PDSCH communications, or when UE 120 does not have sufficient time to decode PDCCH communications (e.g., including DCI) before receiving PDSCH communications, etc. In these cases, UE 120 and base station 110 may use a default downlink beam for PDSCH communications so that the PDSCH communications can be received by UE 120.

[0069] For example, if UE 120 has sufficient time to decode PDCCH communication before receiving PDSCH communication, the default PDSCH downlink beam may be the downlink beam used for PDCCH communication. For example, the QCL relation of the control resource set (CORESET) for PDCCH communication may be used as the default downlink beam (e.g., default QCL-Type D relation). If UE 120 does not have sufficient time to decode PDCCH communication before receiving PDSCH communication, the default PDSCH downlink beam may be the downlink beam of the CORESET with the lowest CORESET identifier among all CORESETs monitored by the UE in the active bandwidth portion in the last time slot before the PDSCH communication, the CORESET including the CORESET for UE 120.

[0070] However, in some cases, the downlink beam used for PDCCH communication or the downlink beam of the CORESET with the lowest CORESET identifier may not be an available downlink beam due to, for example, self-interference with an uplink beam used by UE 120 in the same timeslot and / or same symbol(s) as PDSCH communication. For example, the uplink beam used by UE 120 in the same timeslot and / or symbol(s) as PDSCH communication may be different from the uplink beam previously used by UE 120 in the same timeslot as PDCCH communication or in the last timeslot before PDSCH communication. Therefore, using one of these downlink beams as the default downlink beam may degrade performance, such that UE 120 may not be able to successfully receive PDSCH communication. Some techniques and apparatuses described herein enable UE 120 and base station 110 to select a default downlink beam that is also an available downlink beam (as described above), such that when the default downlink beam is selected, UE 120 can perform full-duplex operation and successfully receive and transmit communications simultaneously. This successful reception can reduce errors, save network resources (e.g., by reducing the number of retransmissions), reduce latency, increase throughput, improve reliability, etc.

[0071] As mentioned above, Figure 4 are provided as examples. Other examples may differ from those described in Figure 4 described.

[0072] Figure 5 5 is a diagram illustrating an example 500 of default PDSCH beam determination with self-interference according to various aspects of the present disclosure. Figure 5 As shown, base station 110 and UE 120 may communicate with each other.

[0073] As shown by reference numeral 505, base station 110 may send scheduling information to UE 120, and UE 120 may receive the scheduling information. In some aspects, the scheduling information may be carried in a PDCCH communication, such as in a DCI carried on the PDCCH. The PDCCH communication may schedule PDSCH communication for UE 120, such as by indicating resource allocation (e.g., a time domain resource set, a frequency domain resource set, etc.) for the PDSCH communication. In example 500, the PDCCH communication is sent in time slot 1, and the PDSCH communication is scheduled in time slot 4.

[0074] As indicated by reference numeral 510, PDSCH communications may be scheduled by UE 120 in the same time slot as uplink communications, where UE 120 operates in full-duplex mode (e.g., in-band full-duplex). For example, PDSCH communications may be scheduled in the same time slot as physical uplink shared channel (PUSCH) communications, physical uplink control channel (PUCCH) communications, etc. Additionally or alternatively, PDSCH communications may be scheduled in the same symbol set and / or in one or more overlapping symbols as uplink communications.

[0075] As shown by reference numeral 515, UE 120 may identify an uplink beam to be used for uplink communication in the time slot (e.g., in one or more symbols overlapping with PDSCH communication). For example, UE 120 may select an uplink beam for uplink communication based at least in part on one or more measurements. Additionally or alternatively, base station 110 may indicate the uplink beam to UE 120 (e.g., in a DCI scheduling uplink communication, in a MAC-CE activating the uplink beam, etc.). In some aspects, the uplink beam may correspond to a sounding reference signal (SRS) resource. As shown, the uplink beam may be associated with an available downlink beam set and / or an unavailable downlink beam set.

[0076] As shown in reference numeral 520, an uplink beam may be associated with an available downlink beam set, such as DL beam 2 and DL beam 4. As shown in reference numeral 525, an uplink beam may be associated with an unavailable downlink beam set, such as DL beam 1 and DL beam 3. In some aspects, UE 120 may determine the available downlink beam set and / or the unavailable downlink beam set associated with the uplink beam based at least in part on self-interference associated with full-duplex communication conducted by UE 120 in one or more overlapping symbols. For example, when operating in full-duplex mode (e.g., in-band full-duplex), UE 120 may measure downlink beam quality in the presence of self-interference to identify the available downlink beam set and / or the unavailable downlink beam set for the uplink beam. In some aspects, the downlink beam for which the beam quality measurement is obtained may include a configured downlink beam set, an activated downlink beam set, etc. The beam quality measurement may include one or more of RSRP, RSRQ, RSSI, and SINR. In some examples, the SINR may include self-interference contribution. In some aspects, the UE 120 may determine the available downlink beam set and / or the unavailable downlink beam set by comparing the beam quality measurement with one or more thresholds, as described above in conjunction with Figure 4 As stated.

[0077] As shown by reference numeral 530, UE 120 may select a downlink beam (e.g., a UE downlink beam, an RX downlink beam, a UE RX downlink beam, etc.) from a set of available downlink beams associated with an uplink beam to be used by UE 120 for uplink transmission in one or more symbols for scheduling PDSCH communications. In some aspects, the downlink beam is a default downlink beam. Additionally or alternatively, the downlink beam may correspond to a D-type QCL relationship (e.g., QCL-Type D). For example, a PDCCH communication (e.g., DCI) may not indicate a downlink beam for a PDSCH communication (e.g., may not indicate a TCI state for a PDSCH communication). Alternatively, the PDCCH communication may indicate a downlink beam for PDSCH communication, but UE 120 may not be able to use the indicated downlink beam to receive the PDSCH communication, such as, for example, if UE 120 does not have sufficient time to switch to the indicated downlink beam before receiving the PDSCH communication, or if UE 120 does not have sufficient time to decode the PDCCH communication before receiving the PDSCH communication, among other examples.

[0078] Additionally or alternatively, base station 110 may select a downlink beam (e.g., a BS downlink beam, a TX downlink beam, a BS TX downlink beam, etc.) from a set of available downlink beams associated with an uplink beam to be used by UE 120 for uplink transmission in one or more symbols for scheduling PDSCH communications. In some aspects, UE 120 may send a report to base station 110 indicating the set of available downlink beams for the uplink beam. In some aspects, if UE 120 selects an uplink beam, UE 120 may send an indication of the uplink beam to base station 110. Alternatively, base station 110 may select an uplink beam and send an indication of the uplink beam to UE 120. In this way, base station 110 and UE 120 may select the same downlink beam for PDSCH communications, thereby increasing the likelihood that UE 120 will successfully receive the PDSCH communications.

[0079] As indicated by reference numeral 535, the base station 110 may transmit a PDSCH communication on a selected downlink beam (e.g., a downlink beam selected by the base station 110, such as a BS downlink beam, a TX downlink beam, a BS TX downlink beam, etc.) to the UE 120. The UE 120 may monitor and / or receive the PDSCH communication on the selected downlink beam (e.g., a downlink beam selected by the UE 120, such as a UE downlink beam, an RX downlink beam, a UE RX downlink beam, etc.). By selecting a downlink beam that is an available downlink beam relative to the uplink beam used by the UE 120 to transmit in the same time slot and / or symbol(s) in which the UE 120 receives the PDSCH communication, the UE 120 may avoid or mitigate self-interference issues and increase the likelihood of successfully decoding the PDSCH communication.

[0080] As mentioned above, Figure 5 are provided as examples. Other examples may differ from those described in Figure 5 described.

[0081] Figure 6 6 is a diagram illustrating an example 600 of default PDSCH beam determination with self-interference according to various aspects of the present disclosure. Figure 6 As shown, base station 110 and UE 120 may communicate with each other.

[0082] As shown in reference numeral 605, the base station 110 can send scheduling information to the UE 120, and the UE 120 can receive the scheduling information. In some aspects, the scheduling information can be carried in a PDCCH communication, such as in a DCI carried on the PDCCH. The PDCCH communication can schedule PDSCH communications for the UE 120, such as by indicating resource allocations (e.g., time domain resource sets, frequency domain resource sets, etc.) for the PDSCH communication. In example 600, the PDCCH communication is sent in time slot 1 and the PDSCH communication is scheduled in time slot 4. In addition, the PDCCH communication is sent and received on a downlink beam shown as beam X.

[0083] In some aspects, the PDCCH communication does not indicate the downlink beam to be used for PDSCH communication. For example, the base station 110 may indicate in a configuration (e.g., an RRC configuration message) to the UE 120 that the PDCCH communication (e.g., DCI) will not indicate the TCI state for the PDSCH communication. In this case, the UE 120 may need to use information other than the TCI state field in the PDCCH communication to identify the downlink beam to be used for reception of the PDSCH communication (e.g., a default downlink beam). Alternatively, the PDCCH communication may indicate the downlink beam to be used for PDSCH communication, but the UE 120 may not have sufficient time to switch to the indicated downlink beam to receive the PDSCH communication. For example, the amount of time that the UE 120 switches to the indicated downlink beam for PDSCH communication may be less than a PDCCH decoding time threshold and / or a beam switching threshold associated with the UE 120. In this case, UE 120 may need to use information other than the TCI status field in the PDCCH communication to identify a downlink beam (e.g., a default downlink beam) to be used for reception of PDSCH communications. UE 120 and base station 110 may use the techniques described below to identify a default downlink beam that is also an available downlink beam, thereby increasing the likelihood that UE 120 will successfully receive and decode PDSCH communications.

[0084] As shown in the reference numeral 610, and as described above in conjunction with Figure 5 As described above, UE 120 may identify an uplink beam to be used for uplink communication in a time slot in which PDSCH communication is scheduled (e.g., in one or more symbols overlapping with PDSCH communication). For example, PDSCH communication may be scheduled by UE 120 in the same time slot and / or symbol(s) as uplink communication, wherein UE 120 operates in full-duplex mode (e.g., in-band full-duplex). As described above in conjunction with Figure 5As described, UE 120 may identify an uplink beam to be used for uplink communications in a time slot and / or symbol(s) that overlap with PDSCH communications. As described elsewhere herein, an uplink beam may be associated with an available downlink beam set and / or an unavailable downlink beam set (e.g., due to self-interference).

[0085] As shown by reference numeral 615, the length of time (e.g., delay) from a PDCCH communication (e.g., the end of the last symbol of a time slot in which the PDCCH communication is received) to a PDSCH communication (e.g., the beginning of the first symbol of a time slot in which the PDSCH communication is scheduled) may meet a threshold (e.g., may be greater than or equal to the threshold). In some aspects, the length of time may be determined by a k0 value, a last symbol position of the PDCCH communication, and / or a first symbol position of the PDSCH communication, one or more of which may be indicated in the PDCCH communication (e.g., in one or more fields of a DCI indicating the k0 value and / or the first symbol position of the PDSCH communication). The k0 value may indicate a delay of a number of time slots from a PDCCH communication (e.g., a downlink grant) to a PDSCH communication (e.g., downlink data scheduled by the downlink grant). The UE 120 and / or the base station 110 may determine that the length of time meets a threshold (e.g., is greater than or equal to the threshold). In some aspects, the threshold may be based at least in part on a PDCCH decoding time, a beam switching timing threshold supported by the UE, and / or the like. As a result, the UE 120 may have sufficient time to decode the PDCCH communication and / or perform beam switching before receiving the PDSCH communication.

[0086] As shown by reference numeral 620, the UE 120 and / or the base station 110 may determine whether the downlink beam (e.g., beam X) of the PDCCH communication is an available downlink beam associated with the uplink beam. In some aspects, the UE 120 and / or the base station 110 may make this determination based at least in part on determining that the length of time meets a threshold. For example, the UE 120 may be able to make this determination before receiving the PDSCH communication because the length of time meets the threshold. The UE 120 and / or the base station 110 may select a downlink beam (e.g., a default downlink beam) for reception of the PDSCH communication based at least in part on determining that the length of time meets the threshold and determining whether the downlink beam of the PDCCH communication is an available downlink beam associated with the uplink beam.

[0087] For example, as shown in reference numeral 625, if the downlink beam of the PDCCH communication (e.g., beam X) is an available downlink beam associated with the uplink beam, the UE 120 may select the downlink beam of the PDCCH communication for reception of the PDSCH communication. However, as shown in reference numeral 630, if the downlink beam of the PDCCH communication (e.g., beam X) is an unavailable downlink beam associated with the uplink beam, the UE 120 may select an available downlink beam with the lowest downlink beam identifier in the downlink beam set associated with the UE 120 (e.g., an activated downlink beam set (e.g., as indicated by an activated TCI state set associated with the UE 120) or a configured downlink beam set (e.g., as indicated by a configured TCI state set associated with the UE 120), etc.) as the downlink beam for reception of the PDSCH communication.

[0088] For example, base station 110 may configure UE 120 with a TCI state set (e.g., in an RRC message), which is referred to as a configured TCI state set. The activated TCI state set may be a subset of the configured TCI state set. In some aspects, base station 110 may indicate the activated TCI state to UE 120, e.g., in a MAC-CE command. The TCI state may indicate a downlink beam (e.g., a QCL-Type D relationship). The TCI state may be identified by a TCI state identifier, which is an example of a downlink beam identifier.

[0089] The UE 120 and / or the base station 110 may select an available downlink beam as a downlink beam for receiving PDSCH communication, the available downlink beam having a TCI state that satisfies a condition in an activated TCI state set or a configured TCI state set, such as a TCI state with a lowest TCI state identifier, a highest TCI state identifier, or a specific TCI state identifier. In some aspects, the UE 120 may identify a candidate downlink beam set. The candidate downlink beam set may include one or more downlink beams that are included in the available beam set associated with the uplink beam and are also included in the activated downlink beam set (or configured downlink beam set). The UE 120 may select the downlink beam with the lowest downlink beam identifier (e.g., the lowest value of the TCI state identifier) in the candidate downlink beam set as the downlink beam to be used for receiving PDSCH communication.

[0090] As a more specific example, as indicated by reference numeral 635, the UE 120 and / or the base station 110 may select an available downlink beam (e.g., a downlink beam) having a TCI state with a lowest TCI state identifier (e.g., a lowest beam identifier) in an activated TCI state set or in a configured TCI state set as a downlink beam for receiving PDSCH communication. In other words, the UE 120 and / or the base station 110 may select a downlink beam having a TCI state with a lowest TCI state identifier in an available activated TCI state set associated with an uplink beam or in an available configured TCI state set associated with an uplink beam.

[0091] As from Figure 6 For example, if a downlink beam is selected from an activated downlink beam set including beam 2 and beam 4, and both beam 2 and beam 4 are available downlink beams, UE 120 may select beam 2 because beam 2 has a lower beam identifier than beam 4 (e.g., 2<4). Figure 6 As another example, if a downlink beam is selected from a configured downlink beam set including beam 1, beam 2, beam 3, and beam 4, and beams 1 through 4 are all available downlink beams, UE 120 may select beam 1 because beam 1 has the lowest beam identifier in the configured downlink beam set. However, if beam 1 is unavailable and beam 2 is available, UE 120 may select beam 2 as the downlink beam with the lowest beam identifier, which is also the available downlink beam associated with the uplink beam.

[0092] As indicated by reference numeral 640, the base station 110 may transmit a PDSCH communication to the UE 120 on a selected downlink beam (e.g., a downlink beam selected by the base station 110, such as a BS downlink beam, a TX downlink beam, a BS TX downlink beam, etc.). The UE 120 may monitor and / or receive the PDSCH communication on the selected downlink beam (e.g., a downlink beam selected by the UE 120, such as a UE downlink beam, an RX downlink beam, a UE RX downlink beam, etc.). By selecting a downlink beam that is an available downlink beam relative to the uplink beam used by the UE 120 to transmit in the same time slot and / or symbol(s) in which the UE 120 receives the PDSCH communication, the UE 120 may avoid or mitigate self-interference issues and increase the likelihood of successfully decoding the PDSCH communication.

[0093] As mentioned above, Figure 6 are provided as examples. Other examples may differ from those described in Figure 6 described.

[0094] Figure 7 7 is a diagram illustrating an example 700 of default PDSCH beam determination with self-interference according to various aspects of the present disclosure. Figure 7 As shown, base station 110 and UE 120 may communicate with each other.

[0095] As shown by reference numeral 705, base station 110 may send scheduling information to UE 120, and UE 120 may receive the scheduling information. In some aspects, the scheduling information may be carried in a PDCCH communication, such as in a DCI carried on the PDCCH. The PDCCH communication may schedule PDSCH communication for UE 120, such as by indicating resource allocation (e.g., a time domain resource set, a frequency domain resource set, etc.) for the PDSCH communication. In example 700, the PDCCH communication is sent in time slot 1, and the PDSCH communication is scheduled in time slot 3.

[0096] As shown in the reference numeral 710, and as described above in conjunction with Figure 5 As described above, UE 120 may identify an uplink beam to be used for uplink communication in a time slot in which PDSCH communication is scheduled (e.g., in one or more symbols overlapping with PDSCH communication). For example, PDSCH communication may be scheduled by UE 120 in the same time slot and / or symbol(s) as uplink communication, wherein UE 120 operates in full-duplex mode (e.g., in-band full-duplex). As described above in conjunction with Figure 5 As described, UE 120 may identify an uplink beam to be used for uplink communications in a time slot and / or symbol(s) that overlap with PDSCH communications. As described elsewhere herein, an uplink beam may be associated with an available downlink beam set and / or an unavailable downlink beam set (e.g., due to self-interference).

[0097] As shown by reference numeral 715, the length of time (e.g., delay) from a PDCCH communication (e.g., the end of the last symbol of a time slot in which the PDCCH communication is received) to a PDSCH communication (e.g., the beginning of the first symbol of a time slot in which the PDSCH communication is scheduled) may not meet a threshold (e.g., may be less than a threshold). In some aspects, as described above, the length of time may be related to the k0 value. UE 120 and / or base station 110 may determine that the length of time does not meet the threshold (e.g., is less than a threshold). As a result, UE 120 may not have sufficient time to decode the PDCCH communication before receiving the PDSCH communication.

[0098] As shown by reference numeral 720, UE 120 may monitor a set of control resource sets (CORESETs) in the active bandwidth part (BWP) in time slot 2, which is the last time slot before PDSCH communication, including the CORESETs monitored by UE 120. For example, base station 110 may configure UE 120 with a set of configured CORESETs (e.g., in an RRC message). One or more configured CORESETs may be associated with a search space set having a periodicity and an offset such that UE 120 monitors these CORESETs in time slot 2. CORESETs may be identified by CORESET identifiers, shown as CORESET 1 and CORESET 2 in example 700. Furthermore, the CORESETs may be transmitted using downlink beams, and UE 120 may monitor the downlink beams to monitor the CORESETs. In example 700, CORESET 1 is transmitted using downlink beam A, and CORESET 2 is transmitted using downlink beam B. The CORESET may carry PDCCH communications (eg, in PDCCH monitoring scenarios associated with the CORESET).

[0099] In example 700, the last time slot that includes a PDCCH monitoring opportunity associated with a CORESET monitored by UE 120 prior to PDSCH communication is time slot 2, which is the time slot that occurs immediately prior to the time slot that includes PDSCH communication. However, in some examples, the last time slot that includes a PDSCH monitoring opportunity associated with a CORESET monitored by UE 120 may be a time slot that does not occur immediately prior to the time slot that includes PDSCH communication (e.g., in some examples, the last time slot may be time slot 1). For simplicity, the last time slot that includes a CORESET monitored by UE 120 prior to PDSCH communication may be referred to herein as the "last time slot."

[0100] As indicated by reference numeral 725, the UE 120 and / or the base station 110 may determine whether the downlink beam of the CORESET (e.g., CORESET 1 in example 700) having the lowest CORESET identifier among all CORESETs monitored by the UE in the active BWP in the last time slot (e.g., CORESET 1 and 2 in example 700) is an available downlink beam associated with the uplink beam. In example 700, the UE 120 determines whether beam A is an available downlink beam because beam A is used for transmissions by CORESET 1, which has the lowest CORESET identifier (e.g., 1) among CORESET 1 and CORESET 2. In some aspects, the UE 120 and / or the base station 110 may make this determination based at least in part on determining that the length of time does not satisfy a threshold. The UE 120 and / or the base station 110 may select a downlink beam (e.g., a default downlink beam) for reception of the PDSCH communication based at least in part on determining that the length of time does not satisfy a threshold and determining whether a downlink beam of a CORESET having a lowest CORESET identifier among all CORESETs monitored by the UE in an active BWP in a last time slot is an available downlink beam.

[0101] For example, as indicated by reference numeral 730, if the downlink beam (e.g., beam A) of the CORESET with the lowest CORESET identifier is an available downlink beam associated with the uplink beam, the UE 120 may select the downlink beam (e.g., beam A) for reception of PDSCH communication. However, if the downlink beam (e.g., beam A) of the CORESET with the lowest CORESET identifier is an unavailable downlink beam associated with the uplink beam, the UE 120 may select the available downlink beam of the CORESET with the lowest CORESET identifier in the CORESET set as the downlink beam for reception of PDSCH communication, for which the corresponding downlink beam is the available downlink beam monitored by the UE 120 in the active BWP in the last time slot.

[0102] In some aspects, the UE 120 may determine whether at least one CORESET (e.g., any CORESET) monitored by the UE 120 in the active BWP in the last time slot is associated with an available downlink beam. If at least one CORESET monitored by the UE 120 in the active BWP in the last time slot is associated with an available downlink beam, the UE 120 may identify a candidate downlink beam set as the available downlink beams (associated with an uplink beam) for the CORESET monitored in the active BWP in the last time slot. The UE 120 may select a downlink beam for the CORESET with the lowest CORESET identifier from the candidate downlink beam set. In some aspects, the UE 120 may identify a set of candidate CORESETs for which the corresponding downlink beams are available downlink beams associated with the uplink beam. The UE 120 may identify the CORESET with the lowest CORESET identifier in the candidate downlink beam set and may select the downlink beam associated with the CORESET.

[0103] In example 700, UE 120 monitors two CORESETs, CORESET 1 and CORESET 2, in an active BWP in the last time slot. CORESET 1 transmits on beam A and CORESET 2 transmits on beam B. In this example, if beam A is not a downlink beam that can be used for the uplink beam, UE 120 may determine whether beam B is a downlink beam that can be used for the uplink beam, as shown by reference numeral 735. If beam B is a downlink beam that can be used for the uplink beam, UE 120 may select beam B (associated with CORESET 2) for reception of PDSCH communications, as shown by reference numeral 740.

[0104] As indicated by reference numeral 745, if none of the CORESETs monitored by UE 120 in the active BWP in the last time slot is associated with an available downlink beam, UE 120 may select an available downlink beam with the lowest downlink beam identifier (or satisfying another condition, as described above) in the downlink beam set associated with UE 120, as described above in conjunction with Figure 6 As described above, the downlink beam set associated with UE 120 may include an activated downlink beam set (e.g., indicated by an activated TCI state set associated with UE 120) or a configured downlink beam set (e.g., indicated by a configured TCI state set associated with UE 120), etc.

[0105] As a more specific example, as indicated by reference numeral 750, the UE 120 and / or the base station 110 may select an available downlink beam (e.g., a downlink beam) having a TCI state with a lowest TCI state identifier (e.g., a lowest beam identifier) in an activated TCI state set or in a configured TCI state set as a downlink beam for reception of PDSCH communication. In other words, the UE 120 and / or the base station 110 may select a downlink beam having a TCI state with a lowest TCI state identifier in an available activated TCI state set associated with an uplink beam or in an available configured TCI state set associated with an uplink beam.

[0106] As from Figure 7 For example, if a downlink beam is selected from an activated downlink beam set including beam C and beam D, and both beams C and D are available downlink beams, UE 120 may select beam C because beam C has a lower beam identifier than beam D (e.g., in this example, C < D). Figure 7 As another example, if a downlink beam is selected from a configured downlink beam set including beam A, beam B, beam C, and beam D, and beams A through D are all available downlink beams, UE 120 may select beam A because beam A has the lowest beam identifier in the configured downlink beam set. However, if beams A, B, and C are unavailable, UE 120 may select beam D as the downlink beam with the lowest beam identifier, which is also the available downlink beam associated with the uplink beam.

[0107] As indicated by reference numeral 755, the base station 110 may transmit a PDSCH communication on a selected downlink beam (e.g., a downlink beam selected by the base station 110, such as a BS downlink beam, a TX downlink beam, a BS TX downlink beam, etc.) to the UE 120. The UE 120 may monitor and / or receive the PDSCH communication on the selected downlink beam (e.g., a downlink beam selected by the UE 120, such as a UE downlink beam, an RX downlink beam, a UE RX downlink beam, etc.). By selecting a downlink beam that is available relative to an uplink beam transmitted by the UE 120 in the same time slot and / or symbol(s) in which the UE 120 receives the PDSCH communication, the UE 120 may avoid or mitigate self-interference issues and increase the likelihood of successfully decoding the PDSCH communication.

[0108] As mentioned above, Figure 7 are provided as examples. Other examples may differ from the reference Figure 7described.

[0109] Figure 8 8 is a diagram illustrating an example process 800 performed, for example, by a UE, according to various aspects of the present disclosure. The example process 800 is a diagram illustrating an example process 800 performed, for example, by a UE (e.g., UE 120, Figure 10 An example of a device 1002, etc.) performing operations associated with default PDSCH downlink beam determination with self-interference.

[0110] like Figure 8 As shown, in some aspects, process 800 may include receiving scheduling information for scheduling PDSCH communications for a UE (block 810). For example, the UE (e.g., using receive processor 258, controller / processor 280, memory 282, etc.) may receive scheduling information for scheduling PDSCH communications for the UE, as described above in conjunction with Figure 5-7 As stated.

[0111] like Figure 8 As further shown in FIG. 8 , in some aspects, process 800 may include selecting a downlink beam for reception of a PDSCH communication from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission in one or more symbols for scheduling the PDSCH communication (block 820). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, etc.) may select a downlink beam for reception of a PDSCH communication from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission in one or more symbols for scheduling the PDSCH communication, as described above in conjunction with FIG. Figure 5-7 As stated.

[0112] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below, and / or in conjunction with one or more other processes described elsewhere herein.

[0113] In a first aspect, a set of available downlink beams is determined based at least in part on self-interference associated with full-duplex communication of a UE in one or more symbols.

[0114] In a second aspect, alone or in combination with the first aspect, an uplink beam is associated with an available downlink beam set and an unavailable downlink beam set.

[0115] In a third aspect, alone or in combination with one or more of the first and second aspects, the downlink beam corresponds to a Class D quasi co-location relationship.

[0116] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the uplink beam corresponds to a sounding reference signal resource.

[0117] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, process 800 includes determining that a length of time from a PDCCH communication scheduling a PDSCH communication to the PDSCH communication satisfies a threshold; determining, based at least in part on determining that the length of time satisfies the threshold, whether a downlink beam of the PDCCH communication scheduling the PDSCH communication is an available downlink beam associated with an uplink beam; and selecting a downlink beam for receiving the PDSCH communication based at least in part on determining that the length of time satisfies the threshold and determining that the downlink beam of the PDCCH communication scheduling the PDSCH communication is an available downlink beam. In some aspects, the threshold is a beam switching timing threshold supported by the UE.

[0118] In the sixth aspect, alone or in combination with one or more of the first to fifth aspects, selecting a downlink beam for reception of PDSCH communication includes: if the downlink beam of the PDCCH communication that schedules the PDSCH communication is an available downlink beam, selecting the downlink beam of the PDCCH communication that schedules the PDSCH communication, or if the downlink beam of the PDCCH communication that schedules the PDSCH communication is an unavailable downlink beam, selecting an available downlink beam with a lowest downlink beam identifier in a downlink beam set associated with the UE.

[0119] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the downlink beam set associated with the UE is one of an activated downlink beam set for the UE or a configured downlink beam set for the UE.

[0120] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the downlink beam identifier is a transmission configuration indication state identifier.

[0121] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the PDCCH communication does not indicate a downlink beam to be used for the PDSCH communication.

[0122] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the PDCCH communication indicates a downlink beam to be used for PDSCH communication, but the amount of time the UE switches to the downlink beam for PDSCH communication is less than a minimum PDCCH decoding time supported by the UE.

[0123] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 800 includes determining that a length of time from a PDCCH communication scheduling a PDSCH communication to the PDSCH communication does not satisfy a threshold; determining, based at least in part on determining that the length of time does not satisfy the threshold, whether a downlink beam of a control resource set (CORESET) having a lowest CORESET identifier among all CORESETs monitored by the UE in an active bandwidth portion in a last time slot before the PDSCH communication is an available downlink beam; and selecting a downlink beam for reception of the PDSCH communication based at least in part on determining that the length of time does not satisfy the threshold and determining that the downlink beam of the CORESET having the lowest CORESET identifier is an available downlink beam. In some aspects, the threshold is a beam switching timing threshold supported by the UE.

[0124] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, selecting a downlink beam for reception of PDSCH communication comprises: if the downlink beam of the CORESET with the lowest CORESET identifier among all CORESETs monitored by the UE in the active bandwidth portion in the last time slot is an available downlink beam, selecting the downlink beam of the CORESET with the lowest CORESET identifier among all CORESETs monitored by the UE in the active bandwidth portion in the last time slot, if at least one CORESET monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam, selecting the available downlink beam of the CORESET with the lowest CORESET identifier among the set of CORESETs monitored by the UE in the active bandwidth portion in the last time slot (for which the corresponding downlink beam is an available downlink beam), or if none of the CORESETs monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam, selecting the available downlink beam with the lowest downlink beam identifier among the downlink beam set associated with the UE.

[0125] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the downlink beam set associated with the UE is one of an activated downlink beam set for the UE or a configured downlink beam set for the UE.

[0126] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the downlink beam identifier is a transmission configuration indication state identifier.

[0127] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, process 800 includes determining that a length of time from a PDCCH communication scheduling a PDSCH communication to the PDSCH communication does not satisfy a threshold; determining whether at least one CORESET including the UE's CORESET monitored by the UE in an active bandwidth portion in a last time slot prior to the PDSCH communication is associated with an available downlink beam; and selecting a downlink beam for receiving the PDSCH communication based at least in part on determining that the length of time does not satisfy the threshold and determining whether at least one CORESET monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam. In some aspects, the threshold is a beam switching timing threshold supported by the UE.

[0128] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, selecting a downlink beam for reception of PDSCH communication comprises: if at least one CORESET monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam, selecting the available downlink beam of the CORESET with the lowest CORESET identifier among the CORESETCORESET set monitored by the UE in the active bandwidth portion in the last time slot (for which the corresponding downlink beam is an available downlink beam), or if none of the CORESETs monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam, selecting the available downlink beam with the lowest downlink beam identifier among the downlink beam set associated with the UE.

[0129] In a seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, the downlink beam set associated with the UE is one of an activated downlink beam set for the UE or a configured downlink beam set for the UE.

[0130] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, the downlink beam identifier is a transmission configuration indication state identifier.

[0131] although Figure 8 Example blocks of process 800 are shown, but in some aspects, process 800 may include more Figure 8 The blocks of process 800 may be more blocks, fewer blocks, different blocks, or blocks arranged differently than those depicted in FIG. Additionally or alternatively, two or more blocks of process 800 may be executed in parallel.

[0132] Figure 99 is a diagram illustrating an example process 900, for example, performed by a base station, according to various aspects of the present disclosure. Example process 900 is a diagram illustrating an example process 900 performed by a base station (e.g., base station 110, Figure 12 An example of a device 1202, etc.) performing operations associated with default PDSCH beam determination with self-interference.

[0133] like Figure 9 As shown, in some aspects, process 900 may include sending scheduling information that schedules PDSCH communications for the UE (block 910). For example, a base station (e.g., using transmit processor 220, controller / processor 240, memory 242, etc.) may send scheduling information that schedules PDSCH communications for the UE, as described above in conjunction with Figure 5-7 As stated.

[0134] like Figure 9 As further shown in FIG. 1 , in some aspects, process 900 may include selecting a downlink beam for transmission of a PDSCH communication from a set of available downlink beams associated with an uplink beam, the uplink beam to be used by the UE for uplink transmission in one or more symbols for scheduling the PDSCH communication (block 920). For example, a base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242, etc.) may select a downlink beam for transmission of a PDSCH communication from a set of available downlink beams associated with an uplink beam, the uplink beam to be used by the UE for uplink transmission in one or more symbols for scheduling the PDSCH communication, as described above in conjunction with FIG. Figure 5-7 As stated.

[0135] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below, and / or in conjunction with one or more other processes described elsewhere herein.

[0136] In a first aspect, the UE indicates available downlink beam sets to the base station.

[0137] In a second aspect, alone or in combination with the first aspect, an uplink beam is associated with an available downlink beam set and an unavailable downlink beam set.

[0138] In a third aspect, alone or in combination with one or more of the first and second aspects, the downlink beam corresponds to a Class D quasi co-location relationship.

[0139] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the uplink beam corresponds to a sounding reference signal resource.

[0140] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, process 900 includes determining that a length of time from a PDCCH communication scheduling a PDSCH communication to the PDSCH communication satisfies a threshold; determining, based at least in part on determining that the length of time satisfies the threshold, whether a downlink beam of the PDCCH communication scheduling the PDSCH communication is an available downlink beam associated with an uplink beam; and selecting a downlink beam for transmission of the PDSCH communication based at least in part on determining that the length of time satisfies the threshold and determining that the downlink beam of the PDCCH communication scheduling the PDSCH communication is an available downlink beam. In some aspects, the threshold is a beam switching timing threshold supported by the UE.

[0141] In the sixth aspect, alone or in combination with one or more of the first to fifth aspects, selecting a downlink beam for transmission of PDSCH communication includes: if the downlink beam of the PDCCH communication that schedules the PDSCH communication is an available downlink beam, then selecting the downlink beam of the PDCCH communication that schedules the PDSCH communication, or if the downlink beam of the PDCCH communication that schedules the PDSCH communication is an unavailable downlink beam, then selecting an available downlink beam with the lowest downlink beam identifier in the downlink beam set associated with the UE.

[0142] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the downlink beam set associated with the UE is one of an activated downlink beam set for the UE or a configured downlink beam set for the UE.

[0143] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the downlink beam identifier is a transmission configuration indication state identifier.

[0144] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the PDCCH communication does not indicate a downlink beam to be used for the PDSCH communication.

[0145] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the PDCCH communication indicates a downlink beam to be used for PDSCH communication, but the amount of time the UE switches to the downlink beam for PDSCH communication is less than a minimum PDCCH decoding time supported by the UE.

[0146] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 900 includes determining that a length of time from a PDCCH communication scheduling a PDSCH communication to the PDSCH communication does not satisfy a threshold; determining, based at least in part on determining that the length of time does not satisfy the threshold, whether a downlink beam of a control resource set (CORESET) having a lowest CORESET identifier among all CORESETs monitored by the UE in an active bandwidth portion in a last time slot before the PDSCH communication is an available downlink beam; and selecting a downlink beam for transmission of the PDSCH communication based at least in part on determining that the length of time does not satisfy the threshold and determining whether the downlink beam of the CORESET having the lowest CORESET identifier is an available downlink beam. In some aspects, the threshold is a beam switching timing threshold supported by the UE.

[0147] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, selecting a downlink beam for transmission of a PDSCH communication comprises: if the downlink beam of the CORESET with the lowest CORESET identifier among all CORESETs monitored by the UE in the active bandwidth portion in the last time slot is an available downlink beam, selecting the downlink beam of the CORESET with the lowest CORESET identifier among all CORESETs monitored by the UE in the active bandwidth portion in the last time slot, if at least one CORESET monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam, selecting the available downlink beam of the CORESET with the lowest CORESET identifier from the set of CORESETs monitored by the UE in the active bandwidth portion in the last time slot (for which the corresponding downlink beam is an available downlink beam), or if none of the CORESETs monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam, selecting the available downlink beam with the lowest downlink beam identifier among the set of downlink beams associated with the UE.

[0148] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the downlink beam set associated with the UE is one of an activated downlink beam set for the UE or a configured downlink beam set for the UE.

[0149] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the downlink beam identifier is a transmission configuration indication state identifier.

[0150] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, process 900 includes determining that a length of time from a PDCCH communication scheduling a PDSCH communication to the PDSCH communication does not satisfy a threshold; determining whether at least one control resource set (CORESET) including a CORESET for the UE monitored by the UE in an active bandwidth portion in a last time slot prior to the PDSCH communication is associated with an available downlink beam; and selecting a downlink beam for transmission of the PDSCH communication based at least in part on determining that the length of time does not satisfy the threshold and determining whether at least one CORESET monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam. In some aspects, the threshold is a beam switching timing threshold supported by the UE.

[0151] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, selecting a downlink beam for transmission of PDSCH communication includes: if at least one CORESET monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam, then selecting the available downlink beam of the CORESET with the lowest CORESET identifier in the CORESET set (for which the corresponding downlink beam is an available downlink beam), or if none of the CORESETs monitored by the UE in the active bandwidth portion in the last time slot is associated with an available downlink beam, then selecting the available downlink beam with the lowest downlink beam identifier in the downlink beam set associated with the UE.

[0152] In a seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, the downlink beam set associated with the UE is one of an activated downlink beam set for the UE or a configured downlink beam set for the UE.

[0153] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, the downlink beam identifier is a transmission configuration indication state identifier.

[0154] although Figure 9 Example blocks of process 900 are shown, but in some aspects, process 900 may include more Figure 9 The blocks of process 900 may be more blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in FIG. Additionally or alternatively, two or more blocks of process 900 may be executed in parallel.

[0155] Figure 101000 is a conceptual data flow diagram illustrating the data flow between different modules / components / assemblies in an example apparatus 1002. The apparatus 1002 may be a UE. In some aspects, the apparatus 1002 includes a receiving module 1004, an available beam determining module 1006, a beam selecting module 1008, and / or a transmitting module 1010.

[0156] The receiving module 1004 may receive scheduling information from the apparatus 1050 (e.g., a base station) that schedules PDSCH communications for the apparatus 1002. The available beam determination module 1006 may determine an available beam set and / or an unavailable beam set associated with an uplink beam, for example, based at least in part on the measurements received from the receiving module 1004. The available beam determination module 1006 may indicate the available beam sets of different uplink beams to the beam selection module 1008. The beam selection module 1008 may receive an indication of a time slot for scheduling PDSCH communications from the receiving module 1004. Additionally or alternatively, the beam selection module 1008 may receive an indication of an uplink beam to be used in the time slot from the receiving module 1004 or the transmitting module 1010. The beam selection module 1008 may select a downlink beam for receiving PDSCH communications from a set of available downlink beams associated with an uplink beam to be used by the apparatus 1002 for uplink transmission in one or more symbols for scheduling PDSCH communications. The beam selection module 1008 may indicate the selected downlink beam to the receiving module 1004. The receiving module 1004 may use the selected downlink beam for receiving PDSCH communications.

[0157] The apparatus may include executing Figure 8 Additional modules may be provided for each block of the algorithm in the aforementioned process 800 and / or similar processes. Figure 8 Each block in the aforementioned process 800 can be performed by a module, and the apparatus can include one or more of these modules. These modules can be one or more hardware components that are specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0158] Figure 10 The number and arrangement of modules shown in are provided as examples. Figure 10 There may be more modules, fewer modules, different modules, or modules arranged differently than those shown in FIG. Figure 10 Two or more modules shown in may be implemented in a single module, or Figure 10 The single module shown in can be implemented as multiple distributed modules. Additionally or alternatively, Figure 10A set of modules (eg, one or more modules) shown in FIG may perform the operations described as being performed by Figure 10 Another set of modules shown in FIG. 1 performs one or more functions.

[0159] Figure 11 is a diagram 1100 illustrating an example of a hardware implementation for an apparatus 1002' employing a processing system 1102. The apparatus 1002' may be a UE.

[0160] The processing system 1102 may be implemented using a bus architecture, generally represented by bus 1104. Bus 1104 may include any number of interconnecting buses and bridges, depending on the specific application and overall design constraints of the processing system 1102. Bus 1104 links together various circuits including one or more processors and / or hardware modules, represented by processor 1106, modules 1004, 1006, 1008, and / or 1010, and computer-readable media / memory 1108. Bus 1104 may also link various other circuits, such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore not described further.

[0161] Processing system 1102 may be coupled to a transceiver 1110. Transceiver 1110 is coupled to one or more antennas 1112. Transceiver 1110 provides a means for communicating with various other devices via a transmission medium. Transceiver 1110 receives signals from one or more antennas 1112, extracts information from the received signals, and provides the extracted information to processing system 1102, specifically, to receive module 1004. Furthermore, transceiver 1110 receives information from processing system 1102 (specifically, transmit module 1010) and, based at least in part on the received information, generates signals to be applied to one or more antennas 1112. Processing system 1102 includes a processor 1106 coupled to computer-readable media / memory 1108. Processor 1106 is responsible for general processing, including executing software stored on computer-readable media / memory 1108. This software, when executed by processor 1106, enables processing system 1102 to perform the various functions described herein for any particular device. The computer-readable medium / memory 1108 may also be used to store data that is manipulated by the processor 1106 when executing software. The processing system also includes at least one of modules 1004, 1006, 1008, and / or 1010. These modules may be software modules that run in the processor 1106, reside / stored in the computer-readable medium / memory 1108, one or more hardware modules coupled to the processor 1106, or some combination thereof. The processing system 1102 may be a component of the UE 120 and may include at least one of the memory 282 and / or the TX MIMO processor 266, the RX processor 258, and / or the controller / processor 280.

[0162] In some aspects, the apparatus 1002 / 1002′ for wireless communication includes means for receiving scheduling information that schedules PDSCH communication for the apparatus 1002 / 1002′; means for selecting a downlink beam for receiving PDSCH communication from a set of available downlink beams associated with the uplink beam, the uplink beam to be used by the apparatus 1002 / 1002′ for uplink transmission in one or more symbols for which the PDSCH communication is scheduled; and / or the like. The aforementioned means may be one or more of the aforementioned modules of the apparatus 1002 and / or the processing system 1102 of the apparatus 1002′, configured to perform the functions recited by the aforementioned means. As described elsewhere herein, the processing system 1102 may include the TX MIMO processor 266, the RX processor 258, and / or the controller / processor 280. In one configuration, the aforementioned means may be the TX MIMO processor 266, the RX processor 258, and / or the controller / processor 280, configured to perform the functions and / or operations described herein.

[0163] Figure 11 is provided as an example. Other examples may differ in combination with Figure 11 described.

[0164] Figure 12 1200 is a conceptual data flow diagram illustrating the data flow between different modules / components / assemblies in an example apparatus 1202. The apparatus 1202 may be a base station. In some aspects, the apparatus 1202 includes a receiving module 1204, a scheduling module 1206, a beam selection module 1208, and / or a transmitting module 1210.

[0165] Scheduling module 1206 may schedule PDSCH communications for device 1250 (e.g., a UE). In some aspects, such scheduling may be based at least in part on information received from receiving module 1204 (e.g., information received from one or more UEs). Scheduling module 1206 may provide scheduling information, such as information for PDCCH communications (e.g., DCI), to transmission module 1210. Transmission module 1210 may send scheduling information to device 1250, which schedules PDSCH communications for device 1250. Receiving module 1204 may receive a report of available beam sets and / or unavailable beam sets associated with uplink beams from device 1250, for example, based at least in part on measurements sent by transmitting module 1210. Receiving module 1204 may indicate available beam sets for different uplink beams to beam selection module 1208. Beam selection module 1208 may receive an indication of a time slot for scheduling PDSCH communications from scheduling module 1206. Additionally or alternatively, beam selection module 1208 may receive an indication of an uplink beam to be used by device 1250 in the time slot from one or more other modules. Beam selection module 1208 may select a downlink beam from the set of available downlink beams associated with the uplink beam for transmission of the PDSCH communication, which downlink beam will be used by device 1250 for uplink transmission in one or more symbols in which the PDSCH communication is scheduled. Beam selection module 1208 may indicate the selected downlink beam to transmission module 1210. Transmission module 1210 may use the selected downlink beam for transmission of the PDSCH communication.

[0166] The apparatus may include executing Figure 9 Additional modules may be provided for each block of the algorithm in the aforementioned process 900 and / or similar processes. Figure 9 Each block in the aforementioned process 900 can be performed by a module, and the apparatus may include one or more of these modules. These modules may be one or more hardware components that are specifically configured to perform the process / algorithm, implemented by a processor configured to perform the process / algorithm, stored in a computer-readable medium for implementation by a processor, or some combination thereof.

[0167] Figure 12 The number and arrangement of modules shown in are provided as examples. Figure 12 There may be more modules, fewer modules, different modules, or modules arranged differently than those shown in FIG. Figure 12 Two or more modules shown in may be implemented in a single module, or Figure 12 The single module shown in can be implemented as multiple distributed modules. Additionally or alternatively, Figure 12 A set of modules (eg, one or more modules) shown in FIG may perform the operations described as being performed by Figure 12 Another set of modules shown in FIG. 1 performs one or more functions.

[0168] Figure 13 is a diagram 1300 illustrating an example of a hardware implementation for an apparatus 1202' employing a processing system 1302. The apparatus 1202' may be a base station.

[0169] The processing system 1302 may be implemented using a bus architecture, generally represented by bus 1304. Bus 1304 may include any number of interconnecting buses and bridges, depending on the specific application and overall design constraints of the processing system 1302. Bus 1304 links various circuits together, including one or more processors and / or hardware modules represented by processor 1306, modules 1204, 1206, 1208, and / or 1210, and computer-readable media / memory 1308. Bus 1304 may also link various other circuits, such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore not described further.

[0170] Processing system 1302 may be coupled to a transceiver 1310. Transceiver 1310 is coupled to one or more antennas 1312. Transceiver 1310 provides a means for communicating with various other devices via a transmission medium. Transceiver 1310 receives signals from one or more antennas 1312, extracts information from the received signals, and provides the extracted information to processing system 1302, specifically, to receive module 1204. Furthermore, transceiver 1310 receives information from processing system 1302 (specifically, transmit module 1210) and, based at least in part on the received information, generates signals to be applied to one or more antennas 1312. Processing system 1302 includes a processor 1306 coupled to computer-readable media / memory 1308. Processor 1306 is responsible for general processing, including executing software stored on computer-readable media / memory 1308. This software, when executed by processor 1306, enables processing system 1302 to perform the various functions described herein for any particular device. Computer-readable medium / memory 1308 may also be used to store data manipulated by processor 1306 when executing software. The processing system also includes at least one of modules 1204, 1206, 1208, and / or 1210. These modules may be software modules running in processor 1306, resident / stored in computer-readable medium / memory 1308, one or more hardware modules coupled to processor 1306, or some combination thereof. Processing system 1302 may be a component of base station 110 and may include memory 242 and / or at least one of TX MIMO processor 230, RX processor 238, and / or controller / processor 240.

[0171] In some aspects, the apparatus 1202 / 1202' for wireless communication includes: means for transmitting scheduling information that schedules PDSCH communications for a UE; means for selecting a downlink beam for transmission of the PDSCH communications from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission in one or more symbols for scheduling the PDSCH communications; and / or the like. The aforementioned means may be one or more of the aforementioned modules of the apparatus 1202 and / or the processing system 1302 of the apparatus 1202', configured to perform the functions described by the aforementioned means. As described elsewhere herein, the processing system 1302 may include the TX MIMO processor 230, the receive processor 238, and / or the controller / processor 240. In one configuration, the aforementioned means may be the TX MIMO processor 230, the receive processor 238, and / or the controller / processor 240, configured to perform the functions and / or operations described herein.

[0172] Figure 13is provided as an example. Other examples may differ in combination with Figure 13 described.

[0173] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit these aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of these aspects.

[0174] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0175] As used herein, satisfying a threshold may refer to a value that 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., depending on the context.

[0176] It will be apparent that the systems and / or methods described herein can be implemented using various forms of hardware, firmware, and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code, with the understanding that software and hardware can be designed to implement the systems and / or methods based, at least in part, on the description herein.

[0177] Even though particular combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in ways not specifically set forth in the claims and / or disclosed in the specification. Although each dependent claim listed below may be directly dependent on only one claim, the disclosure of the various aspects includes the combination of each dependent claim with every other claim in the claim set. A phrase referring to "at least one" of a series of items refers to any combination of those items, including single members. For example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination of multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and cccc, or any other order of a, b, cd).

[0178] Unless explicitly described, any element, action or instruction used in this article should not be interpreted as critical or essential. In addition, as used herein, the articles "a" 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, unrelated items, a combination of related and unrelated items, etc.) and can be used interchangeably with "one or more". If only one item is referred to, the phrase "only one" or similar language is used. In addition, as used herein, the term "has, have, having" and / or similar terms are intended to be open terms. In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise expressly stated.

Claims

1. A wireless communication method performed by a user equipment (UE), comprising: receiving a physical downlink control channel (PDCCH) communication including scheduling information that schedules a physical downlink shared channel (PDSCH) communication for the UE, wherein the PDSCH communication is scheduled in the same time slot as an uplink communication to be used by the UE such that the UE operates in full-duplex mode in the same time slot; determining, based at least in part on self-interference associated with full-duplex communication by the UE in the same time slot, a set of available downlink beams associated with an uplink beam to be used by the UE for the uplink communication; as well as A downlink beam for reception of the PDSCH communication is selected from the set of available downlink beams based at least in part on identifying the uplink communication.

2. The method according to claim 1, wherein The uplink beam is further associated with an unavailable downlink beam set. The method of claim 1 , wherein the downlink beam corresponds to a Class D quasi-co-location relationship. The method of claim 1 , wherein the uplink beam corresponds to a sounding reference signal resource.

5. The method according to claim 1, further comprising: Determining that a time length from the PDCCH communication to the PDSCH communication meets a threshold; as well as determining whether a downlink beam of the PDCCH communication that schedules the PDSCH communication is an available downlink beam in the set of available downlink beams based at least in part on determining that the length of time satisfies the threshold, Wherein selecting the downlink beam for reception of the PDSCH communication is based at least in part on determining that the length of time satisfies the threshold and determining whether the downlink beam of the PDCCH communication scheduling the PDSCH communication is the available downlink beam.

6. The method according to claim 5, wherein: Selecting the downlink beam for reception of the PDSCH communication comprises: If the downlink beam of the PDCCH communication that schedules the PDSCH communication is the available downlink beam, selecting the downlink beam of the PDCCH communication that schedules the PDSCH communication, or If the downlink beam that schedules the PDCCH communication of the PDSCH communication is an unavailable downlink beam, an available downlink beam having a lowest downlink beam identifier is selected in a downlink beam set associated with the UE.

7. The method according to claim 6, wherein: The downlink beam set associated with the UE is one of an activated downlink beam set for the UE or a configured downlink beam set for the UE.

8. The method according to claim 6, wherein: The downlink beam identifier is a transmission configuration indication state identifier.

9. The method according to claim 5, wherein: The PDCCH communication does not indicate a downlink beam to be used for the PDSCH communication.

10. The method according to claim 5, wherein The PDCCH communication indicates the downlink beam to be used for the PDSCH communication, and wherein an amount of time for the UE to switch to the downlink beam for the PDSCH communication is less than a minimum PDCCH decoding time supported by the UE.

11. The method according to claim 5, wherein: The threshold is a beam switching timing threshold supported by the UE.

12. The method according to claim 1, further comprising: determining that a time length from the PDCCH communication that schedules the PDSCH communication to the PDSCH communication does not meet a threshold; determining, based at least in part on determining that the length of time does not satisfy the threshold, whether a downlink beam of a control resource set (CORESET) having a lowest CORESET identifier among all CORESETs monitored by the UE in an active bandwidth portion in a last time slot prior to the PDSCH communication is an available downlink beam in the available downlink beam set; as well as Wherein selecting the downlink beam for reception of the PDSCH communication is based at least in part on determining that the length of time does not satisfy the threshold and determining whether the downlink beam of the CORESET having the lowest CORESET identifier is an available downlink beam.

13. The method according to claim 12, wherein: Selecting the downlink beam for reception of the PDSCH communication comprises: selecting the downlink beam of the CORESET having the lowest CORESET identifier among all CORESETs monitored by the UE in the active bandwidth portion in the last time slot if the downlink beam of the CORESET having the lowest CORESET identifier among all CORESETs monitored by the UE in the active bandwidth portion in the last time slot is the available downlink beam, if at least one CORESET monitored by the UE in the active bandwidth portion in the last time slot is associated with the available downlink beam, selecting the available downlink beam of the CORESET with the lowest CORESET identifier among the CORESET set monitored by the UE in the active bandwidth portion in the last time slot, for which the corresponding downlink beam is the available downlink beam, or If none of the CORESETs monitored by the UE in the active bandwidth portion in the last time slot is associated with the available downlink beam, an available downlink beam with a lowest downlink beam identifier is selected in the downlink beam set associated with the UE.

14. The method according to claim 13, wherein The downlink beam set associated with the UE is one of an activated downlink beam set for the UE or a configured downlink beam set for the UE.

15. The method according to claim 13, wherein The downlink beam identifier is a transmission configuration indication state identifier.

16. The method according to claim 12, wherein: The threshold is a beam switching timing threshold supported by the UE.

17. The method according to claim 1, further comprising: determining that a time length from the PDCCH communication that schedules the PDSCH communication to the PDSCH communication does not meet a threshold; and determining whether at least one control resource set (CORESET) including a CORESET for the UE monitored by the UE in an active bandwidth portion in a last time slot before the PDSCH communication is associated with an available downlink beam in the available downlink beam set; Wherein selecting the downlink beam for reception of the PDSCH communication is based at least in part on determining that the time length does not satisfy the threshold and determining whether at least one CORESET monitored by the UE in the active bandwidth portion in the last time slot is associated with the available downlink beam.

18. The method according to claim 17, wherein Selecting a downlink beam for reception of the PDSCH communication includes: if at least one CORESET monitored by the UE in the active bandwidth portion in the last time slot is associated with the available downlink beam, selecting the available downlink beam of the CORESET with the lowest CORESET identifier among the CORESET set monitored by the UE in the active bandwidth portion in the last time slot, for which the corresponding downlink beam is the available downlink beam, or If none of the CORESETs monitored by the UE in the active bandwidth portion in the last time slot is associated with the available downlink beam, an available downlink beam with a lowest downlink beam identifier is selected in the downlink beam set associated with the UE.

19. The method according to claim 18, wherein The downlink beam set associated with the UE is one of an activated downlink beam set for the UE or a configured downlink beam set for the UE.

20. The method according to claim 18, wherein The downlink beam identifier is a transmission configuration indication state identifier.

21. The method according to claim 17, wherein The threshold is a beam switching timing threshold supported by the UE.

22. A wireless communication method performed by a network entity, comprising: transmitting a physical downlink control channel (PDCCH) communication including scheduling information that schedules a physical downlink shared channel (PDSCH) communication for a user equipment (UE), wherein the PDSCH communication is scheduled in the same time slot as an uplink communication to be used by the UE such that the UE operates in full-duplex mode in the same time slot; as well as selecting, based at least in part on identifying the uplink communication, a downlink beam for transmission of the PDSCH communication from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission, The available downlink beam set is based at least in part on self-interference associated with full-duplex communication conducted by the UE in the same time slot.

23. The method according to claim 22, wherein The UE indicates the available downlink beam set to the network entity.

24. The method of claim 22, wherein the uplink beam is further associated with an unavailable downlink beam set.

25. The method of claim 22, wherein the downlink beam corresponds to a Class D quasi co-location relationship.

26. The method according to claim 22, wherein The uplink beam corresponds to a sounding reference signal resource.

27. A user equipment (UE) for wireless communication, comprising: Memory; as well as one or more processors operably coupled to the memory, the one or more processors configured to: receiving a physical downlink control channel (PDCCH) communication including scheduling information that schedules a physical downlink shared channel (PDSCH) communication for the UE, wherein the PDSCH communication is scheduled in the same time slot as an uplink communication to be used by the UE such that the UE operates in full-duplex mode in the same time slot; determining, based at least in part on self-interference associated with full-duplex communication by the UE in the same time slot, a set of available downlink beams associated with an uplink beam to be used by the UE for the uplink communication; as well as A downlink beam for reception of the PDSCH communication is selected from the set of available downlink beams based at least in part on identifying the uplink communication.

28. The UE of claim 27, wherein the uplink beam is further associated with an unavailable downlink beam set.

29. The UE of claim 27, wherein the downlink beam corresponds to a Class D quasi co-location relationship.

30. A base station for wireless communication, comprising: Memory; as well as one or more processors operably coupled to the memory, the one or more processors configured to: transmitting a physical downlink control channel (PDCCH) communication including scheduling information that schedules a physical downlink shared channel (PDSCH) communication for a user equipment (UE), wherein the PDSCH communication is scheduled in the same time slot as an uplink communication to be used by the UE such that the UE operates in full-duplex mode in the same time slot; as well as selecting, based at least in part on identifying the uplink communication, a downlink beam for transmission of the PDSCH communication from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission, The available downlink beam set is based at least in part on self-interference associated with full-duplex communication conducted by the UE in the same time slot.

31. A user equipment (UE) for wireless communication, comprising: means for receiving a physical downlink control channel (PDCCH) communication including scheduling information that schedules a physical downlink shared channel (PDSCH) communication for the UE, wherein the PDSCH communication is scheduled in the same time slot as an uplink communication to be used by the UE such that the UE operates in full-duplex mode in the same time slot; means for determining a set of available downlink beams associated with an uplink beam to be used by the UE for the uplink communication based at least in part on self-interference associated with full-duplex communication conducted by the UE in the same time slot; as well as Means for selecting a downlink beam for reception of the PDSCH communication from the set of available downlink beams based at least in part on identifying the uplink communication.

32. A base station for wireless communication, comprising: means for transmitting a physical downlink control channel (PDCCH) communication including scheduling information that schedules a physical downlink shared channel (PDSCH) communication for a user equipment (UE), wherein the PDSCH communication is scheduled in the same time slot as an uplink communication to be used by the UE such that the UE operates in full-duplex mode in the same time slot; as well as means for selecting a downlink beam for transmission of the PDSCH communication from a set of available downlink beams associated with an uplink beam to be used by the UE for uplink transmission based at least in part on identifying the uplink communication, The available downlink beam set is based at least in part on self-interference associated with full-duplex communication conducted by the UE in the same time slot.

33. A computer-readable medium having one or more computer instructions recorded thereon, which, when executed by one or more processors of a user equipment (UE), cause the one or more processors to perform the method for wireless communication according to any one of claims 1-21.

34. A computer-readable medium having one or more computer instructions recorded thereon, which, when executed by one or more processors of a network entity, cause the one or more processors to perform the wireless communication method according to any one of claims 22 to 26.

35. A computer program product comprising one or more computer instructions which, when executed by one or more processors of a user equipment (UE), cause the one or more processors to perform the method of wireless communication according to any one of claims 1-21.

36. A computer program product comprising one or more computer instructions, which, when executed by one or more processors of a network entity, cause the one or more processors to perform the method for wireless communication according to any one of claims 22 to 26.

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