Beam Quality Measurement in Wireless Networks

Abstract

Various aspects relate to measuring downlink beam quality in the presence of self-interference when operating in full-duplex mode, where the full-duplex mode is configured for concurrent transmission and reception within overlapping bandwidths. A user equipment (UE) may communicate with a base station on one or more of a plurality of uplink beams and downlink beams. For each uplink beam, the UE may obtain a beam quality measurement associated with each of the downlink beams to identify a set of available downlink beams. The UE may also send a report to the base station indicating a set of available downlink beams for at least one uplink beam.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to and the benefit of pending Greek application No. 20190100530, filed on November 25, 2019, entitled “BEAM QUALITY MEASUREMENTS IN WIRELESS NETWORKS,” which is assigned to the assignee of the present application and is hereby expressly incorporated herein by reference as if fully set forth below and for all applicable purposes. Technical Field

[0003]

[0011] The techniques discussed below generally relate to wireless communication systems, and more particularly, to measuring downlink beam quality in the presence of uplink self-interference. Background Art

[0004] A wireless communication network can utilize one or more duplex mechanisms to communicate over an air interface. Duplex refers to a point-to-point communication link in which two endpoints can communicate with each other in both directions. Duplexing for a wireless link is achieved by utilizing one or more of frequency division duplex (FDD), time division duplex (TDD), or full duplex. In FDD mode, different frequency bandwidths are used for downlink communication from a base station to a user equipment (UE) and uplink communication from a UE to a base station. In TDD mode, downlink communication and uplink communication occur on the same frequency band but at different times, so that only one of the UE or base station can send information to the other at a time.

[0005] In full-duplex mode, both the UE and the base station can communicate with each other simultaneously within the same frequency band. A full-duplex channel generally relies on physical isolation of the transmitter and receiver and appropriate interference cancellation techniques. Summary of the Invention

[0006] In order to provide a basic understanding of one or more aspects of the present disclosure, an overview of such aspects is provided below. This overview is not a general overview of all anticipated features of the present disclosure and is neither intended to identify key or important elements of all aspects of the present disclosure nor to delineate the scope of any or all aspects of the present disclosure. Its sole purpose is to present some concepts of one or more aspects of the present disclosure as a preface to the more detailed description that will be provided later.

[0007] Various aspects of the present disclosure relate to mechanisms for measuring downlink beam quality in the presence of uplink self-interference when operating in full-duplex mode. A user equipment (UE) may communicate with a base station on one or more of a plurality of uplink beams and downlink beams. For each uplink beam, the UE may obtain a beam quality measurement associated with each of the downlink beams to identify a set of available downlink beams. The UE may also send a report to the base station indicating the set of available downlink beams for at least one uplink beam. Thus, in some aspects, an optimal downlink beam set may be identified for each uplink beam, thereby improving communication performance between the UE and the base station.

[0008] In some examples, the UE may obtain beam quality measurements on a configured or activated downlink beam set or a corresponding subset thereof. In some examples, each of the downlink beams may be identified based on quasi-co-location (QCL) information indicating spatial characteristics of each of the downlink beams. The report sent to the base station may also include corresponding QCL information for each of the downlink beams in the set of available downlink beams. In some examples, for each uplink beam, the UE may also identify an unavailable downlink beam set and include an indication of the unavailable downlink beam set for at least one uplink beam in the report.

[0009] In some examples, the beam quality measurement may include one or more of reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), or signal to interference plus noise ratio (SINR). In some examples, SINR includes self-interference contribution.

[0010] In some examples, for each uplink beam, the UE may compare the beam quality measurement associated with each of the downlink beams with a first threshold and identify a set of available downlink beams for which the beam quality measurement exceeds the first threshold. In some examples, the UE may identify the set of available downlink beams as downlink beams for which the beam quality measurement exceeds the first threshold for a duration. In some examples, the UE may also compare the beam quality measurement associated with each of the downlink beams with a second threshold for each uplink beam and identify a set of unavailable downlink beams for which the beam quality measurement is less than the second threshold. For example, the UE may receive a threshold amount and a hysteresis value from a base station and determine the first threshold and the second threshold based on the threshold amount and the hysteresis value.

[0011] In some examples, a method for communicating at a scheduled entity (e.g., a user equipment) may include communicating with a base station in a full-duplex mode configured for concurrent transmission and reception within an overlapping bandwidth. The method may also include obtaining a beam quality measurement for each of one or more uplink beams, wherein each beam quality measurement corresponds to a corresponding downlink beam in a plurality of downlink beams. The method may also include identifying, for each of the one or more uplink beams, a set of available downlink beams in the plurality of downlink beams based on the beam quality measurement. Additionally, the method may include sending a report to the base station, the report indicating the set of available downlink beams for at least one of the one or more uplink beams.

[0012] In some examples, a scheduled entity (e.g., a user equipment) may include: a transceiver; a memory; and a processor communicatively coupled to the transceiver and the memory. The processor may be configured to communicate with a base station in a full-duplex mode configured for concurrent transmission and reception within an overlapping bandwidth. The processor may also be configured to obtain a beam quality measurement for each of one or more uplink beams, wherein each beam quality measurement corresponds to a corresponding downlink beam in a plurality of downlink beams. The processor may also be configured to identify, for each of the one or more uplink beams, a set of available downlink beams in the plurality of downlink beams based on the beam quality measurement. In addition, the processor may be configured to send a report to the base station, the report indicating the set of available downlink beams for at least one of the one or more uplink beams.

[0013] In some examples, a scheduled entity (e.g., a user equipment) may include: a unit for communicating with a base station in full-duplex mode, wherein the full-duplex mode is configured for concurrent transmission and reception within an overlapping bandwidth. The scheduled entity may also include: a unit for obtaining a beam quality measurement for each uplink beam in one or more uplink beams, wherein each beam quality measurement corresponds to a corresponding downlink beam in a plurality of downlink beams. The scheduled entity may also include: a unit for identifying, for each uplink beam in the one or more uplink beams, a set of available downlink beams in the plurality of downlink beams based on the beam quality measurement. In addition, the scheduled entity may include: a unit for sending a report to the base station, the report indicating the set of available downlink beams for at least one uplink beam in the one or more uplink beams.

[0014] In some examples, an article for use by a scheduled entity (e.g., a user equipment) includes a computer-readable medium having instructions stored therein executable by one or more processors of the scheduled entity to perform the following operations: communicate with a base station in a full-duplex mode, the full-duplex mode being configured for concurrent transmission and reception within an overlapping bandwidth. The computer-readable medium may also have instructions stored therein executable by one or more processors of the scheduled entity to perform the following operations: obtain a beam quality measurement for each uplink beam in one or more uplink beams, wherein each beam quality measurement corresponds to a corresponding downlink beam in a plurality of downlink beams. The computer-readable medium may also have instructions stored therein executable by one or more processors of the scheduled entity to perform the following operations: identify, for each uplink beam in the one or more uplink beams, a set of available downlink beams in the plurality of downlink beams based on the beam quality measurement. In addition, the computer-readable medium may have instructions stored therein that can be executed by one or more processors of the scheduled entity to perform the following operations: sending a report to the base station, the report indicating the set of available downlink beams for at least one of the one or more uplink beams.

[0015] One or more of the following features may apply to the methods, apparatus, and computer-readable media of the preceding paragraphs. A selected uplink beam from the one or more uplink beams may be identified. A downlink signal may be received from the base station on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam. The multiple downlink beams may be selected from a set of configured downlink beams configured by the base station for communication with the scheduled entity. The multiple downlink beams may be selected from a set of activated downlink beams within the set of configured downlink beams activated by the base station for communication with the scheduled entity. The multiple downlink beams may be selected as a subset of the configured downlink beam set. The multiple downlink beams may be selected as a subset of the activated downlink beam set.

[0016] In some examples, a method for communicating at a scheduling entity (e.g., a base station) may include: communicating with a user equipment (UE) in a full-duplex mode configured for concurrent transmission and reception within an overlapping bandwidth; transmitting to the UE on multiple downlink beams to facilitate beam quality measurement on each downlink beam in the multiple downlink beams for each uplink beam in one or more uplink beams; and receiving a report from the UE. The report may indicate a set of available downlink beams for at least one of the one or more uplink beams in the multiple downlink beams based on the beam quality measurement. The method may also include: identifying a selected uplink beam in the one or more uplink beams; and transmitting a downlink signal to the UE on an available downlink beam in the set of available downlink beams corresponding to the selected uplink beam.

[0017] In some examples, a scheduling entity (e.g., a base station) may include: a transceiver; a memory; and a processor communicatively coupled to the transceiver and the memory. The processor is configured to: communicate with a user equipment (UE) in full-duplex mode, the full-duplex mode being configured for concurrent transmission and reception within overlapping bandwidths; transmit to the UE on multiple downlink beams to facilitate beam quality measurement on each of the multiple downlink beams for each of one or more uplink beams; and receive a report from the UE. The report may indicate a set of available downlink beams for at least one of the one or more uplink beams in the multiple downlink beams based on the beam quality measurement. The processor may also be configured to: identify a selected uplink beam from the one or more uplink beams; and transmit a downlink signal to the UE on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam.

[0018] In some examples, a scheduling entity (e.g., a base station) may include: means for communicating with a user equipment (UE) in full-duplex mode, the full-duplex mode being configured for concurrent transmission and reception within overlapping bandwidths; means for transmitting to the UE on multiple downlink beams to facilitate beam quality measurement on each of the multiple downlink beams for each of one or more uplink beams; and means for receiving a report from the UE. The report may indicate a set of available downlink beams for at least one of the one or more uplink beams in the multiple downlink beams based on the beam quality measurement. The scheduling entity may also include: means for identifying a selected uplink beam from the one or more uplink beams; and means for transmitting a downlink signal to the UE on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam.

[0019] In some examples, an article for use by a scheduling entity (e.g., a base station) includes a computer-readable medium having instructions stored therein executable by one or more processors of the scheduling entity to: communicate with a user equipment (UE) in full-duplex mode configured for concurrent transmission and reception within overlapping bandwidths; transmit to the UE on multiple downlink beams to facilitate beam quality measurement on each of the multiple downlink beams for each of one or more uplink beams; and receive a report from the UE. The report may indicate a set of available downlink beams for at least one of the one or more uplink beams in the multiple downlink beams based on the beam quality measurement. The computer-readable medium may also have instructions stored therein that can be executed by one or more processors of the scheduling entity to perform the following operations: identifying a selected uplink beam from the one or more uplink beams; and sending a downlink signal to the UE on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam.

[0020] One or more of the following features may be applicable to the methods, apparatus, and computer-readable media of the preceding paragraphs. The downlink reference signal may be sent on each of the multiple downlink beams. The multiple downlink beams may include a configured downlink beam set configured by the base station for communication with the UE. The multiple downlink beams may include an activated downlink beam set in the configured downlink beam set that is activated by the base station for communication with the UE. The report may include corresponding quasi-co-location information or corresponding transmission configuration indication status, each of which indicates a corresponding spatial characteristic for each corresponding downlink beam in the available downlink beam set for the at least one uplink beam. The spatial characteristic may include at least one of the following: beam direction, beam width, associated downlink reference signal, or a combination thereof. The report may indicate the set of available downlink beams and a corresponding set of unavailable downlink beams for the at least one uplink beam among the plurality of downlink beams, wherein the set of available downlink beams and the set of unavailable downlink beams are non-overlapping.

[0021] After reviewing the detailed description below, these and other aspects will become more fully understood. After reviewing the following description of specific exemplary embodiments in conjunction with the accompanying drawings, other aspects, features and embodiments will become apparent to those of ordinary skill in the art. Although the features of the present disclosure may be discussed below with respect to certain embodiments and the accompanying drawings, all embodiments of the present disclosure may include one or more of the advantageous features discussed herein. In other words, although one or more embodiments may be discussed as having certain advantageous features, one or more of such features may also be used according to the various embodiments of the present disclosure discussed herein. In a similar manner, although the exemplary embodiments may be discussed below as device, system or method embodiments, it should be understood that such exemplary embodiments can be implemented in various devices, systems and methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a wireless communication system.

[0023] Figure 2 is a conceptual diagram of an example of a radio access network.

[0024] Figures 3A-3C is a diagram illustrating various duplex modes in a radio access network.

[0025] Figure 4 is a schematic diagram of the organization of radio resources in the air interface using Orthogonal Frequency Division Multiplexing (OFDM).

[0026] Figure 5 is a block diagram illustrating a wireless communication system supporting Multiple-Input Multiple-Output (MIMO) communication.

[0027] Figure 6 is a diagram illustrating beamforming in a wireless communication system.

[0028] Figure 7 is a flow chart illustrating an exemplary process for a user equipment to identify a downlink beam for each uplink beam when operating in full-duplex mode.

[0029] Figure 8 is a signaling diagram illustrating exemplary signaling associated with identifying a downlink beam for each uplink beam for full-duplex mode.

[0030] Figure 9 is a block diagram illustrating an example of a hardware implementation for a scheduling entity employing a processing system.

[0031] Figure 10 is a block diagram illustrating an example of a hardware implementation for a scheduled entity employing a processing system.

[0032] Figure 11 is a flow chart illustrating an exemplary process for a user equipment to identify available downlink beams for each uplink beam when operating in full-duplex mode.

[0033] Figure 12 is a flow chart illustrating an exemplary process for a user equipment to identify and use beams when operating in full-duplex mode.

[0034] Figure 13 is a flow chart illustrating an exemplary process for a user equipment to identify quasi co-location information for a downlink beam when operating in full-duplex mode.

[0035] Figure 14 is a flow chart illustrating an exemplary process in which a base station selects a downlink beam based on a selected uplink beam when a UE is operating in full-duplex mode.

[0036] Figure 15 is a flow chart illustrating an exemplary process for a base station to identify quasi co-location information for a downlink beam when operating in full-duplex mode. DETAILED DESCRIPTION

[0037] The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be implemented. In order to provide a thorough understanding of the various concepts, the detailed description includes specific details. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0038] Although various aspects and embodiments are described in this application by illustrating some examples, it will be understood by those skilled in the art that additional implementations and use cases may be generated in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, embodiments and / or uses may be generated via integrated chip embodiments and other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchase devices, medical devices, AI-enabled devices, etc.). Although some examples may or may not be specifically for use cases or applications, there may be a variety of applicable scopes for the described innovations. Implementations may have a range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations. In some actual settings, the devices incorporating the various aspects and features described may also necessarily include additional components and features for the implementation and practice of the claimed and described embodiments. For example, the transmission and reception of wireless signals necessarily include multiple components for both analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The innovations described herein are intended to be embodied in a variety of devices, chip-level components, systems, distributed arrangements, end-user devices, etc., having different sizes, shapes, and configurations.

[0039] The various concepts presented throughout this disclosure may be implemented in a wide variety of telecommunication systems, network architectures, and communication standards. Figure 1 By way of example and not limitation, various aspects of the present disclosure are illustrated with reference to a wireless communication system 100. The wireless communication system 100 includes three interacting domains: a core network 102, a radio access network (RAN) 104, and a user equipment (UE) 106. By means of the wireless communication system 100, the UE 106 can be implemented to perform data communications with an external data network 110, such as (but not limited to) the Internet.

[0040] The RAN 104 may implement any one or more suitable wireless communication technologies to provide radio access to the UE 106. As one example, the RAN 104 may operate in accordance with the 3rd Generation Partnership Project (3GPP) New Radio (NR) specifications, often referred to as 5G. As another example, the RAN 104 may operate in accordance with a hybrid of 5G NR and Evolved Universal Terrestrial Radio Access Network (eUTRAN) standards, often referred to as Long Term Evolution (LTE). 3GPP refers to this hybrid RAN as the Next Generation RAN, or NG-RAN. Of course, many other examples may be utilized within the scope of the present disclosure.

[0041] As shown, the RAN 104 includes a plurality of base stations 108. In a broad sense, a base station is a network element in a radio access network that is responsible for radio transmission and reception to or from UEs in one or more cells. A base station may be referred to variously by those skilled in the art as a base transceiver station (BTS), a radio base station, a radio transceiver, a transceiver functional unit, a basic service set (BSS), an extended service set (ESS), an access point (AP), a Node B (NB), an evolved Node B (eNB), a gNode B (gNB), or some other appropriate terminology in different technologies, standards, or contexts.

[0042] Radio access network 104 is also shown as supporting wireless communications for multiple mobile devices. In the 3GPP standard, a mobile device may be referred to as a user equipment (UE), but those skilled in the art may also refer to it as a mobile station (MS), subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal (AT), mobile terminal, wireless terminal, remote terminal, handset, terminal, user agent, mobile client, client, or some other appropriate terminology. A UE may be a device that provides a user with access to network services.

[0043] In this document, a "mobile" device does not necessarily need to have the ability to move, but can be stationary. The term mobile device or mobile device broadly refers to a wide variety of devices and technologies. A UE may include multiple hardware structural components that are sized, shaped, and arranged to facilitate communication; such components may include antennas, antenna arrays, RF chains, amplifiers, one or more processors, etc. electrically coupled to each other. For example, some non-limiting examples of mobile devices include mobile stations, cellular (cell) phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal computers (PCs), notebooks, netbooks, smartbooks, tablet devices, personal digital assistants (PDAs), and various embedded systems, e.g., corresponding to the "Internet of Things" (IoT). In addition, a mobile device may be a car or other means of transportation, a remote sensor or actuator, a robot or robotic device, a satellite radio unit, a global positioning system (GPS) device, an object tracking device, a drone, a multi-rotor helicopter, a quadcopter, a remote control device, a consumer device and / or a wearable device such as glasses, a wearable camera, a virtual reality device, a smartwatch, a health or fitness tracker, a digital audio player (e.g., an MP3 player), a camera, a game console, etc. In addition, the mobile device may be a digital home or smart home device, such as home audio, video and / or multimedia equipment, home appliances, vending machines, smart lighting, home security systems, smart meters, and the like. In addition, the mobile device may be a smart energy device, security equipment, solar panels or solar arrays, municipal infrastructure equipment that controls power (e.g., smart grid), lighting, water, and the like; industrial automation and enterprise equipment; logistics controllers; agricultural equipment; military defense equipment, vehicles, aircraft, ships, weapons, and the like. In addition, the mobile device may provide connected medicine or telemedicine support (i.e., telehealth care). Telemedicine devices may include telemedicine monitoring devices and telemedicine management devices, whose communications may be given priority treatment or priority access relative to other types of information (e.g., in terms of priority access for the transmission of critical service data, and / or associated QoS for the transmission of critical service data).

[0044] The wireless communication between the RAN 104 and the UE 106 can be described as utilizing an air interface. Transmissions from a base station (e.g., base station 108) to one or more UEs (e.g., UE 106) over the air interface can be referred to as downlink (DL) transmissions. According to certain aspects of the present disclosure, the term downlink can refer to point-to-multipoint transmissions originating from a scheduling entity (described further below; e.g., base station 108). Another way to describe this approach can be to use the term broadcast channel multiplexing. Transmissions from a UE (e.g., UE 106) to a base station (e.g., base station 108) can be referred to as uplink (UL) transmissions. According to further aspects of the present disclosure, the term uplink can refer to point-to-point transmissions originating from a scheduled entity (described further below; e.g., UE 106).

[0045] In some examples, access to the air interface can be scheduled, wherein a scheduling entity (e.g., base station 108) allocates resources for communication among some or all devices and apparatuses within its service area or cell. In the present disclosure, as discussed further below, a scheduling entity can be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more scheduled entities. That is, for scheduled communications, UE 106 (which can be a scheduled entity) can use resources allocated by scheduling entity 108.

[0046] Base station 108 is not the only entity that can act as a scheduling entity. That is, in some examples, a UE can act as a scheduling entity, scheduling resources for one or more scheduled entities (e.g., one or more other UEs).

[0047] like Figure 1 As shown, the scheduling entity 108 can broadcast downlink traffic 112 to one or more scheduled entities 106. Broadly speaking, the scheduling entity 108 is a node or device responsible for scheduling traffic in the wireless communication network, including downlink traffic 112 and, in some examples, uplink traffic 116 from one or more scheduled entities 106 to the scheduling entity 108. On the other hand, the scheduled entity 106 is a node or device that receives downlink control information 114 (including, but not limited to, scheduling information (e.g., grants), synchronization or timing information, or other control information) from another entity in the wireless communication network, such as the scheduling entity 108.

[0048] In addition, uplink and / or downlink control information and / or traffic information can be divided into frames, subframes, time slots and / or symbols by time. As used herein, a symbol can refer to a time unit in which each carrier in an orthogonal frequency division multiplexing (OFDM) waveform carries one resource element (RE). A time slot can carry 7 or 14 OFDM symbols. A subframe can refer to a duration of 1ms. Multiple subframes or time slots can be grouped together to form a single frame or radio frame. Of course, these definitions are not required, and any appropriate scheme for organizing a waveform can be utilized, and the various time divisions of a waveform can have any appropriate duration.

[0049] Typically, base stations 108 may include a backhaul interface for communicating with a backhaul portion 120 of a wireless communication system. Backhaul 120 may provide a link between base stations 108 and core network 102. Furthermore, in some examples, a backhaul network may provide interconnection between respective base stations 108. Various types of backhaul interfaces may be used, such as a direct physical connection, a virtual network, or a backhaul interface using any suitable transport network.

[0050] The core network 102 may be part of the wireless communication system 100 and may be independent of the radio access technology used in the RAN 104. In some examples, the core network 102 may be configured according to 5G standards (e.g., 5GC). In other examples, the core network 102 may be configured according to 4G Evolved Packet Core (EPC) or any other appropriate standard or configuration.

[0051] Now refer to Figure 2 , by way of example and not limitation, a schematic diagram of a RAN 200 is provided. In some examples, the RAN 200 may be similar to the one described above and in Figure 1 The geographic area covered by the RAN 200 may be divided into a plurality of cellular regions (cells) that a user equipment (UE) may uniquely identify based on an identity broadcast from an access point or base station. Figure 2 Macro cells 202, 204, and 206, and small cell 208 are shown, each of which may include one or more sectors (not shown). A sector is a sub-area of ​​a cell. All sectors within a cell are served by the same base station. A radio link within a sector can be identified by a single logical identifier belonging to that sector. In a cell divided into multiple sectors, the multiple sectors within the cell can be formed by multiple groups of antennas, where each antenna is responsible for communicating with UEs in a portion of the cell.

[0052] exist Figure 2, two base stations 210 and 212 are shown in cells 202 and 204; and a third base station 214 is shown as being used to control a remote radio head (RRH) 216 in cell 206. That is, the base stations can have integrated antennas or can be connected to antennas or RRHs via feeder cables. In the example shown, cells 202, 204, and 126 can be referred to as macro cells because base stations 210, 212, and 214 support cells with larger sizes. In addition, base station 218 is shown in small cells 208 (e.g., micro cells, pico cells, femto cells, home base stations, home node Bs, home evolved node Bs, etc.), where small cells 208 can overlap with one or more macro cells. In this example, cell 208 can be referred to as a small cell because base station 218 supports cells with relatively small sizes. Cell size settings can be made based on system design and component constraints.

[0053] It should be understood that the radio access network 200 may include any number of wireless base stations and cells. In addition, relay nodes may be deployed to extend the size or coverage area of ​​a given cell. Base stations 210, 212, 214, 218 provide wireless access points to the core network for any number of mobile devices. In some examples, base stations 210, 212, 214, and / or 218 may be similar to those described above and in Figure 1 The base station / scheduling entity 108 shown in FIG. 1 is the same as that shown in FIG.

[0054] Within the RAN 200, cells may include UEs that may communicate with one or more sectors of each cell. Further, each base station 210, 212, 214, and 218 may be configured to provide access to the core network 102 (see FIG. 1 ) for all UEs in the corresponding cell. Figure 1 ) access point. For example, UE 222 and UE 224 can communicate with base station 210; UE 226 and UE 228 can communicate with base station 212; UE 230 and UE 232 can communicate with base station 214 through RRH 216; UE 234 can communicate with base station 218. In some examples, UE 222, UE 224, UE 226, UE 228, UE 230, UE 232, UE 234, UE 236, UE 238, UE 240 and / or UE 242 can communicate with the above-described and Figure 1 The UE / scheduled entity 106 shown in FIG. 1 is the same as that shown in FIG.

[0055] In some examples, an unmanned aerial vehicle (UAV) 220, which may be a drone or a quadrotor, may be a mobile network node and may be configured to act as a UE. For example, UAV 220 may operate within cell 202 by communicating with base station 210. In some examples, UAV 220 may be configured to act as a base station (e.g., serving UE 236). That is, in some examples, a cell is not necessarily stationary, and the geographic area of ​​a cell may move depending on the location of a mobile base station such as UAV 220.

[0056] In a further aspect of RAN 200, sidelink signals can be used between UEs without relying on scheduling or control information from a base station. For example, two or more UEs (e.g., UE 226 and 228) can use peer-to-peer (P2P) or sidelink signals 227 to communicate with each other without having to relay the communication through a base station (e.g., base station 212). In another example, UE 238 is shown as communicating with UEs 240 and 242. Herein, UE 238 can act as a scheduling entity or a primary sidelink device, and UEs 240 and 242 can act as scheduled entities or non-primary (e.g., auxiliary) sidelink devices. In another example, a UE can act as a scheduling entity in a device-to-device (D2D), peer-to-peer (P2P) or vehicle-to-vehicle (V2V) network and / or a mesh network. In the mesh network example, UEs 240 and 242 can optionally communicate directly with each other in addition to communicating with UE 238 (e.g., acting as a scheduling entity). Thus, in a wireless communication system having scheduled access to time-frequency resources and having a cellular configuration, a P2P configuration, or a mesh configuration, a scheduling entity and one or more scheduled entities can communicate using the scheduled resources. In some examples, sidelink signal 227 includes sidelink traffic and sidelink control.

[0057] The air interface in the radio access network 200 can utilize one or more multiplexing and multiple access algorithms to enable simultaneous communication of various devices. For example, the 5G NR specification provides multiple access for UL transmissions from UEs 222 and 224 to the base station 210, and multiplexing of DL transmissions from the base station 210 to one or more UEs 222 and 224 using OFDM with a cyclic prefix (CP). In addition, for UL transmissions, the 5G NR specification provides support for discrete Fourier transform spread OFDM (DFT-s-OFDM) with CP (also known as single carrier FDMA (SC-FDMA)). However, within the scope of the present disclosure, multiplexing and multiple access are not limited to the above schemes and can be provided using time division multiple access (TDMA), code division multiple access (CDMA), frequency division multiple access (FDMA), sparse code multiple access (SCMA), resource spread multiple access (RSMA), or other appropriate multiple access schemes. Furthermore, multiplexing of DL transmissions from base station 210 to UEs 222 and 224 may be provided using time division multiplexing (TDM), code division multiplexing (CDM), frequency division multiplexing (FDM), OFDM, sparse code multiplexing (SCM), or other suitable multiplexing scheme.

[0058] In various implementations, the air interface in the radio access network 200 can utilize licensed spectrum, unlicensed spectrum, or shared spectrum. Licensed spectrum generally provides exclusive use of a portion of the spectrum through a mobile network operator purchasing a license from a government regulator. Unlicensed spectrum provides shared use of a portion of the spectrum without requiring a government-authorized license. While it is generally still expected that some technical regulations must be adhered to to access the unlicensed spectrum, generally speaking, any operator or device can gain access. Shared spectrum can fall between licensed spectrum and unlicensed spectrum, where technical regulations or restrictions may be used to access the spectrum, but the spectrum can still be shared by multiple operators and / or multiple RATs. For example, a holder of a license for a portion of the licensed spectrum can provide licensed shared access (LSA) to share the spectrum with other parties (e.g., with appropriate licensee-determined conditions for gaining access).

[0059] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified with the frequency range names FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). Frequencies between FR1 and FR2 are typically referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. Similar naming issues sometimes arise with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) which is identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0060] In view of the above, unless otherwise specified, it should be understood that if the term "sub-6 GHz" is used herein, it can be broadly referred to as a frequency that can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise specified, it should be understood that if the term "millimeter wave" is used herein, it can be broadly referred to as a frequency that can include mid-band frequencies, can be within FR2, or can be within the EHF band.

[0061] The air interface in the radio access network 200 may also utilize one or more duplexing schemes, such as time division duplex (TDD) (also known as half-duplex), frequency division duplex (FDD), or full-duplex. Figure 3A 、 3B and 3C, showing various duplexing mechanisms. Figure 3A Depicts half-duplex (or TDD) mode of communication between a UE and a base station. Half-duplex (or TDD) means that only one endpoint can send information to the other endpoint 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 some times, the channel is dedicated to transmissions in one direction, and at other times, the channel is dedicated to transmissions in the other direction, where the direction can change very quickly (e.g., several times per time slot). Thus, as in Figure 3A As shown in FIG, downlink (DL) communications 302A are separated in time from uplink (UL) communications 304A.

[0062] FDD, or full-duplex, means that both endpoints can communicate with each other simultaneously. Figure 3B Describes the FDD mode communication between the UE and the base station, and Figure 3C Depicts full-duplex mode communication between UE and base station. In FDD mode, as in Figure 3BAs shown in , transmissions in different directions operate at different carrier frequencies. Figure 3B As shown in , DL communications 302B are separated in frequency from UL communications 304B. In full duplex mode, as in Figure 3C As shown in , transmissions in different directions operate at the same carrier frequency or in overlapping bandwidths. Figure 3C In the example shown in , DL communications 302C overlap with UL communications 304C in both time and frequency. Thus, when operating in full-duplex mode, the UE and base station are configured for concurrent transmission and reception within the overlapping bandwidth.

[0063] Reference will be made to Figure 4 Various aspects of the present disclosure are described using the OFDM waveforms schematically illustrated in FIG. It will be appreciated by those skilled in the art that various aspects of the present disclosure can be applied to SC-FDMA waveforms in substantially the same manner as described below. That is, while some examples of the present disclosure may focus on OFDM links for clarity, it will be appreciated that the same principles can also be applied to SC-FDMA waveforms.

[0064] Now refer to Figure 4 , shows an expanded view of an exemplary DL subframe 402 illustrating an OFDM resource grid. However, as will be readily apparent to those skilled in the art, the PHY transmission structure for any particular application may differ from the examples described herein depending on any number of factors. Herein, time is in the horizontal direction, measured in OFDM symbols, while frequency is in the vertical direction, measured in subcarriers.

[0065] The resource grid 404 can be used to schematically represent the time-frequency resources used for a given antenna port. That is, in a multiple-input multiple-output (MIMO) implementation with multiple available antenna ports, corresponding multiple resource grids 404 can be available for communication. The resource grid 404 is divided into multiple resource elements (REs) 406. An RE (which is 1 carrier × 1 symbol) is the smallest discrete part of the time-frequency grid and contains a single complex value representing data from a physical channel or signal. Depending on the modulation used in a particular implementation, each RF can represent one or more bits of information. In some examples, a block of REs can be referred to as a physical resource block (PRB) or more simply as a resource block (RB) 408, which contains any appropriate number of consecutive subcarriers in the frequency domain. In one example, an RB can include 12 subcarriers, the number being independent of the digital scheme used. In some examples, depending on the digital scheme, an RB can include any appropriate number of consecutive OFDM symbols in the time domain.

[0066] Scheduling a UE (scheduled entity) for downlink or uplink transmission typically involves scheduling one or more resource elements 406 within one or more subbands. Thus, a UE typically utilizes only a subset of the resource grid 404. In some examples, an RB may be the smallest unit of resources that can be allocated to a UE. Thus, the more RBs scheduled for a UE and the higher the modulation scheme selected for the air interface, the higher the data rate for the UE.

[0067] In this illustration, RB 408 is shown as occupying less than the entire bandwidth of subframe 402, with some subcarriers shown above and below RB 408. In a given implementation, subframe 402 may have a bandwidth corresponding to any number of one or more RBs 408. Furthermore, in this illustration, while RB 408 is shown as occupying less than the entire duration of subframe 402, this is merely one possible example.

[0068] Each 1ms subframe 402 may be composed of one or more adjacent time slots. Figure 4 In the example shown in , a subframe 402 includes four time slots 410 as an illustrative example. In some examples, a time slot can be defined according to a specified number of OFDM symbols with a given cyclic prefix (CP) length. For example, a time slot can include 7 or 14 OFDM symbols with a nominal CP. Another example may include mini-slots with shorter durations (e.g., one to three OFDM symbols). In some cases, these mini-slots can be sent occupying resources scheduled for ongoing time slot transmissions for the same or different UEs. Any number of resource blocks can be utilized within a subframe or time slot.

[0069] An expanded view of one of the time slots 410 shows that the time slot 410 includes a control region 412 and a data region 414. In general, the control region 412 may carry control channels, and the data region 414 may carry data channels. Of course, a time slot may contain all DL, all UL, or at least one DL portion and at least one UL portion. Figure 4 The simple structure shown in is merely exemplary in nature, and different slot structures may be utilized and may include one or more regions each of the control region and the data region.

[0070] Although not in Figure 44, but each RE 406 within an RB 408 may be scheduled to carry one or more physical channels, including a control channel, a shared channel, a data channel, etc. Other REs 406 within an RB 408 may also carry pilot or reference signals, including but not limited to a demodulation reference signal (DMRS), a control reference signal (CRS), or a sounding reference signal (SRS). These pilot or reference signals may be used by a receiving device to perform channel estimation on the corresponding channel, which may enable coherent demodulation / detection of the control and / or data channels within the RB 408.

[0071] In a DL transmission, a transmitting device (e.g., a scheduling entity 108) may allocate one or more REs 406 (e.g., within a control region 412) to one or more scheduled entities 106 to carry DL control information 114, which includes one or more DL control channels (such as a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), etc.) that typically carry information originating from higher layers. The PDCCH carries downlink control information (DCI) for one or more UEs in a cell. This may include, but is not limited to, power control commands, scheduling information, grants, and / or assignments of REs for DL ​​and UL transmissions.

[0072] In addition, DL REs may be allocated to carry DL physical signals that typically do not carry information originating from higher layers. These DL physical signals may include a primary synchronization signal (PSS); a secondary synchronization signal (SSS); a demodulation reference signal (DMRS); a phase tracking reference signal (PT-RS); a channel state information reference signal (CSI-RS); and the like. The synchronization signals PSS and SSS (collectively referred to as synchronization signals (SS)), and in some examples, the PBCH, may be transmitted in an SS block comprising four consecutive OFDM symbols, numbered by time indices in increasing order from 0 to 3. In the frequency domain, the SS block may be spread over 240 consecutive subcarriers, where the subcarriers are numbered by frequency indices in increasing order from 0 to 239. Of course, the present disclosure is not limited to this particular SS block configuration. Other non-limiting examples may utilize more or less than two synchronization signals; include one or more supplemental channels in addition to the PBCH; omit the PBCH; and / or utilize non-contiguous symbols for the SS block within the scope of the present disclosure.

[0073] In an UL transmission, a transmitting device (e.g., the scheduled entity 106) may utilize one or more REs 406 to carry UL control information 118 (UCI). The UCI may originate from higher layers via one or more UL control channels (such as PUCCH, physical random access channel (PRACH), etc.) to the scheduling entity 108. Further, the UL REs may carry UL physical signals that typically do not carry information originating from higher layers, such as a demodulation reference signal (DMRS), a phase tracking reference signal (PT-RS), an SRS, etc. In some examples, the control information 118 may include a scheduling request (SR), i.e., a request for the scheduling entity 108 to schedule an uplink transmission. Here, in response to the SR sent on the control channel, the scheduling entity 108 may send downlink control information 114 that may schedule resources for uplink packet transmission.

[0074] The UL control information may also include hybrid automatic repeat request (HARQ) feedback, such as an acknowledgment (ACK) or negative acknowledgment (NACK), channel state information (CSI), or any other suitable UL control information. HARQ is a technology well known to those skilled in the art, wherein the integrity of the packet transmission can be checked on the receiving side, for example, using any suitable integrity check mechanism such as a checksum or a cyclic redundancy check (CRC). If the integrity of the transmission is confirmed, an ACK may be sent, and if not, a NACK may be sent. In response to the NACK, the transmitting device may send a HARQ retransmission, which may implement append combining, incremental redundancy, etc.

[0075] In addition to control information, one or more REs 406 (e.g., within the data region 414) may also be allocated for user data traffic. Such traffic may be carried on one or more traffic channels (such as, for DL ​​transmission, the physical downlink shared channel (PDSCH); or for UL transmission, the physical uplink shared channel (PUSCH)). In some examples, one or more REs 406 within the data region 414 may be configured to carry system information blocks (SIBs), which carry information that may enable access to a given cell.

[0076] These physical channels described above are typically multiplexed and mapped to transport channels for processing at the medium access control (MAC) layer. Transport channels carry blocks of information called transport blocks (TBs). The transport block size (TBS), which may correspond to the number of bits of information, may be a controlled parameter based on the modulation and coding scheme (MCS) and the number of RBs in a given transmission.

[0077] exist Figure 4The channels or carriers shown in are not necessarily all channels or carriers that can be used between the scheduling entity and the scheduling entity, and a person skilled in the art will recognize that other channels or carriers may be used in addition to the channels or carriers shown, such as other traffic, control and feedback channels.

[0078] In some examples, the scheduling entity and / or the scheduled entity may be configured for beamforming and / or multiple-input multiple-output (MIMO) technology. Figure 5 An example of a wireless communication system 500 supporting MIMO and beamforming techniques is shown. In a MIMO system, a transmitter 502 includes multiple transmit antennas 504 (e.g., N transmit antennas), and a receiver 506 includes multiple receive antennas 508 (e.g., M receive antennas). Thus, there are NxM signal paths 510 from the transmit antennas 504 to the receive antennas 508. Each of the transmitter 502 and the receiver 506 can be implemented, for example, in a scheduled entity, a scheduling entity, or other suitable wireless communication device.

[0079] The use of this multi-antenna technology enables wireless communication systems to exploit the spatial domain to support spatial multiplexing, beamforming, and transmit diversity. Spatial multiplexing can be used to send different data streams (also called layers) simultaneously on the same time-frequency resources. Data streams can be sent to a single UE to increase the data rate, or to multiple UEs to increase the overall system capacity, the latter of which is called multi-user MIMO (MU-MIMO). This is achieved by spatially precoding each data stream (e.g., multiplying the data stream by different weights and phase shifts) and then sending each spatially precoded stream through multiple transmit antennas on the downlink. The spatially precoded data streams arrive at UEs with different spatial signatures, which enables each of the UEs to recover one or more data streams destined for that UE. On the uplink, each UE sends a spatially precoded data stream, which enables the base station to identify the source of each spatially precoded data stream.

[0080] The number of data streams or layers corresponds to the rank of the transmission. Typically, the rank of a MIMO system is limited by the number of transmit antennas 504 or receive antennas 504 (whichever is lower). In addition, the channel conditions at the UE and other considerations (e.g., available resources at the base station) may also affect the transmission rank. For example, the rank (and therefore, the number of data streams) assigned to a particular UE on the downlink can be determined based on a rank indicator (RI) sent from the UE to the base station. The RI can be determined based on the antenna configuration (e.g., the number of transmit and receive antennas) and the signal to interference and noise ratio (SINR) on each of the receive antennas measured. The RI can indicate, for example, the number of layers that can be supported under the current channel conditions. The base station can use the RI and resource information (e.g., available resources and the amount of data to be scheduled for the UE) to assign a transmission rank to the UE.

[0081] In one example, as in Figure 5 As shown in , a rank-2 spatial multiplexing transmission on a 2x2 MIMO antenna configuration will send one data stream from each transmit antenna 504. Each data stream follows a different signal path 510 to each receive antenna 508. Receiver 506 can then reconstruct the data stream using the signal received from each receive antenna 508.

[0082] Beamforming is a signal processing technique that can be used at a transmitter 502 or a receiver 506 to form or steer an antenna beam (e.g., a transmit beam or a receive beam) along a spatial path between the transmitter 502 and the receiver 506. Beamforming can be achieved by combining signals transmitted via antennas 504 or 508 (e.g., antenna elements of an antenna array module) such that some signals experience constructive interference and other signals experience destructive interference. To produce the desired constructive / destructive interference, the transmitter 502 or the receiver 506 can apply amplitude and / or phase offsets to the signals transmitted or received from each of the antennas 504 or 508 associated with the transmitter 502 or the receiver 506.

[0083] In 5G-NR systems, especially for systems above 6 GHz or mmWave, beamforming signals can be used for most downlink channels, including the Physical Downlink Control Channel (PDCCH) and the Physical Downlink Shared Channel (PDSCH). In addition, broadcast control information such as the Master System Information Block (MSIB), Slot Format Indicator (SFI), and paging information can be sent in a beam-scanning manner so that all scheduled entities (UEs) within the coverage area of ​​a Transmit Reception Point (TRP) (e.g., a gNB) can receive the broadcast control information. In addition, for UEs configured with beamforming antenna arrays, beamforming signals can also be used for uplink channels, including the Physical Uplink Control Channel (PUCCH) and the Physical Uplink Shared Channel (PUSCH). However, it should be understood that beamforming signals can also be used by enhanced mobile broadband (eMBB) gNBs for systems below 6 GHz.

[0084] Figure 6 is a diagram illustrating communication between a base station (BS) 604 (such as a gNB) and a UE 602 using beamforming signals according to some aspects of the present disclosure. The BS 604 may be a Figure 1 、 2 , 5, 8 and 9. UE 602 may be any of the base stations or scheduling entities shown in any of the figures. Figure 1 、 2 , 5 , 8 and 10 , or any of the UEs or scheduled entities shown in any of the figures.

[0085] In 5G-NR, control and data may be transmitted between UE 602 and BS 604 on multiple different beams / paths, each beam / path having a different spatial relationship to the other beams / paths. For example, BS 604 may communicate with UE 602 using one or more downlink beams, and UE 602 may communicate with BS 604 using one or more uplink beams. In some examples, BS 604 and UE 602 may communicate on a beam pair link (BPL) comprising a pair of downlink / uplink beams (e.g., a downlink beam of BS 604 and an uplink beam of UE 602). Each of the downlink beam and the uplink beam may be selected from a corresponding beam set. Figure 6In the example shown in , the downlink beam set includes eight different beams 621, 622, 623, 624, 625, 626, 627, 628, each beam being associated with a different spatial beam direction. In addition, the uplink beam set includes four different beams 631, 632, 633, and 634, each beam being 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 may be different in different aspects. In some examples, beams transmitted during the same symbol may not be adjacent to each other. In some examples, BS 604 and / or UE 602 may transmit more or fewer beams distributed in all directions (e.g., 360 degrees).

[0086] In some examples, the BS 604 can be configured to scan or transmit each of the downlink beams 621, 622, 623, 624, 625, 626, 627, and 628 during a synchronization time slot. For example, the BS 604 can transmit a reference signal, such as an SSB or a CSI-RS, on each downlink beam in a different beam direction during the synchronization time slot. The transmission of the downlink reference signal can occur periodically (e.g., as configured by the gNB via radio resource control (RRC) signaling), semi-persistently (e.g., as configured by the gNB via RRC signaling and activated / deactivated via medium access control-control element (MAC-CE) signaling), or aperiodically (e.g., as triggered by the gNB via downlink control information (DCI)).

[0087] The UE 602 utilizes the received downlink reference signal to identify the downlink beam and performs downlink beam quality measurements on the downlink reference signal, such as received power measurement (e.g., RSRP) and / or received quality measurement (e.g., RSRQ). The UE 602 may also perform additional beam quality measurements on the downlink reference signal received on one or more downlink beams in the downlink beam, such as signal strength (e.g., received signal strength indicator (RSSI)) or interference / noise (e.g., SINR) measurement.

[0088] UE 602 may then transmit a beam measurement report including the corresponding beam index and RSRP or other beam quality measurement for each downlink beam 621-628. BS 604 may then determine, based on the beam measurement report, the downlink beam with the highest quality (e.g., downlink beam 624) on which to transmit unicast downlink control information and / or user data traffic to UE 602. Transmission of the beam measurement report may occur periodically (e.g., as configured by the gNB via RRC signaling), semi-persistently (e.g., as configured by the gNB via RRC signaling and activated / deactivated via MAC-CE signaling), or aperiodically (e.g., as triggered by the gNB via DCI).

[0089] In other examples, when the channel is reciprocal (e.g., the downlink and uplink channel qualities are the same), BS 604 can derive the downlink beam. The derivation can be based on uplink measurements, such as 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 631, 632, 633, and 634 in the uplink beam set. In some examples, BS 604 can not only select the downlink beam based on the received beam measurement report and / or uplink measurement, but also select the uplink beam (e.g., beam 633) as part of the BPL. In other examples, UE 602 can select the uplink beam (e.g., beam 633) based on downlink measurements or other factors. For example, UE 602 can be configured for uplink non-codebook-based MIMO or uplink beam management.

[0090] In some examples, BS 604 may pre-configure each of the reference signals (e.g., downlink reference signals and uplink reference signals) to be transmitted between UE 602 and BS 604 using specific time-frequency resources and specific beams / paths, and provide configuration information for each of the reference signals to UE 602 via, for example, RRC signaling. In some examples, the configuration information may include a transmission configuration indicator (TCI) state indicating quasi-co-location (QCL) information (e.g., QCL type and time-frequency resources) of the reference signal. Examples of QCL types may include one or more of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial RX parameters (e.g., spatial characteristics of a beam). For example, the spatial characteristics of a beam may include at least one of the following: beam direction, 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 these reference signals can 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) with respect to the spatial beam or BPL on which the reference signal is transmitted. Thus, each of the reference signals can be transmitted on the same or different beams or BPLs.

[0091] When operating in TDD (half-duplex) or FDD mode, selection of a downlink beam based on downlink and / or uplink measurements performed in isolation (e.g., without considering communications occurring in the reverse direction) can result in the optimal downlink beam for communication between UE 602 and BS 604. However, when operating in 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 backflow of power from the transmit antenna to the receive antenna, and analog / digital self-interference cancellation to remove transmit leakage current), downlink transmissions received on the selected downlink beam may be affected by the presence of strong self-interference from concurrent uplink transmissions.

[0092] 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, the UE 602 can measure downlink beam quality in the presence of self-interference to identify a set of available downlink beams for each uplink beam. For example, for each uplink beam 631-634, the UE can obtain a beam quality measurement associated with each downlink beam in the downlink beams 621-628 to identify a set of available downlink beams. In some examples, the downlink beams 621-628 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 measurement may include one or more of RSRP, RSRQ, RSSI, and SINR. In some examples, the SINR may include a self-interference contribution.

[0093] UE 602 may then send a report to BS 604 indicating the available downlink beam sets for one or more uplink beams. In some examples, the report may include a beam measurement report sent from UE 602 to BS 604. In other examples, the report may include a separate report generated from UE 602 and sent to BS 604. In some examples, the report sent to BS 604 may also include corresponding QCL information for each downlink beam in the available downlink beam set. In some examples, UE 602 may also 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.

[0094] UE 602 may determine a set of available downlink beams and a set of unavailable downlink beams by comparing beam quality measurements with one or more thresholds. For example, for each uplink beam, UE 602 may compare the beam quality measurement associated with each downlink beam in the downlink beams with 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 602 may also compare the beam quality measurement associated with each downlink beam in the downlink beams with a second threshold and identify a set of unavailable downlink beams for which the beam quality measurement is less than the second threshold. UE 602 may receive a threshold amount and a hysteresis value from BS 604 and determine the first threshold and the second threshold based on the threshold amount and the hysteresis value. For example, UE 602 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.

[0095] Figure 7 is shown for use in conjunction with Figure 6 FIG2 is a flow chart of an exemplary process 700 for a UE to identify available downlink beams for each uplink beam when operating in full-duplex mode. As described below, some or all of the illustrated features may be omitted in certain implementations within the scope of the present disclosure, and some illustrated features may not be required for implementation of all embodiments. In some examples, process 700 may be performed by Figure 10 In some examples, process 700 can be performed by any suitable device or unit for performing the functions or algorithms described below.

[0096] At block 702, the UE selects one uplink (UL) beam from a set of UL beams that the UE can use to communicate with a base station (BS) during a full-duplex operation mode.

[0097] At block 704, the UE selects a set of candidate downlink (DL) beams that the UE may use with the selected UL beam during full-duplex communication.For example, the UE may determine which DL beams are currently activated for use by the UE.

[0098] At block 706, the UE measures signal quality for each of the candidate DL beams. For example, as discussed above, the UE may measure the beam quality of each activated DL beam. These beam quality measurements may include one or more of an RSRP measurement, an RSRQ measurement, an RSSI measurement, an SINR measurement, or a combination thereof. In some examples, the measured SINR may include a self-interference contribution.

[0099] At block 708, the UE identifies a set of available DL beams that the UE can use with the selected UL beam during full-duplex operation mode. For example, as discussed above, the UE can compare the beam quality measurement associated with each of the DL beams with a threshold and identify the beams for which the beam quality measurement exceeds the threshold as available DL beams.

[0100] At block 710, the UE determines whether there are any more UL beams for which to determine the set of available DL beams. If so, process 700 returns to block 702, where another UL beam is selected and the operations of blocks 704-708 are performed for that UL beam to identify the set of available DL beams for that UL beam. This process is repeated for each UL beam that can be used by the UE for full-duplex communication.

[0101] Once all available DL beam sets are determined for each UL beam, the UE sends a report to the BS at block 712. The report indicates the corresponding available DL beam set for each UL beam.

[0102] Figure 8 8 is a signaling diagram 800 illustrating an example of signaling associated with identifying a downlink beam for each uplink beam for full-duplex communication in a wireless communication system including a base station (BS) 802 and a UE 804. In some examples, the BS 802 may correspond to Figure 1 、 2 , 5, 6 and 9. In some examples, UE 804 may correspond to any of the base stations or scheduling entities shown in FIG. Figure 1 、 2 , 5, 6 and 10, any one of the UEs or scheduled entities shown in any of the figures.

[0103] exist Figure 8 At step 806 , BS 802 sends multiple (DL) beams 808 to UE 804 to enable UE 804 to perform signal quality measurement for each of the DL beams 808 .

[0104] At step 810, UE 804 performs signal quality measurements for each of DL beams 808. In some examples, UE 804 can perform signal quality measurements for DL ​​beam 808 while transmitting UL beam 812. In this way, the DL measurements can take into account self-interference (SI) associated with full-duplex (FD) communication.

[0105] At step 814, UE 804 sends a report to BS 802 based on the measurement of step 810. As discussed herein, the report may indicate a corresponding set of available DL beams for each of the plurality of UL beams.

[0106] At step 816, BS 802 schedules FD communication with UE 804 and sends a corresponding schedule 818 of UL beams and DLs to UE 804 indicating the UE to use for FD communication. As discussed herein, when selecting a UL beam for a UE, BS 802 may select a DL beam based on an available DL beam set associated with the UL beam.

[0107] At step 820, the BS 802 and the UE 804 perform FD communication. Here, the UE 804 uses the designated UL beam and DL beam for FD communication.

[0108] Figure 9is a conceptual diagram illustrating an example of a hardware implementation for an exemplary scheduling entity 900 employing a processing system 914. For example, the scheduling entity 900 may be as in Figure 1 、 2 , 5, 6 and / or 8 of any of the figures.

[0109] The scheduling entity 900 can be implemented using a processing system 914 including one or more processors 904. Examples of processors 904 include microprocessors, microcontrollers, digital signal processors (DSPs), field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. In various examples, the scheduling entity 900 can be configured to perform any one or more of the functions described herein. That is, the processor 904, as utilized in the scheduling entity 900, can be used to implement any one or more of the processes described below. In some cases, the processor 904 can be implemented via a baseband or modem chip, while in other implementations, the processor 904 itself can include multiple devices distinct and separate from the baseband or modem chip (e.g., in such scenarios, they can work together to implement the embodiments discussed herein). As mentioned above, various hardware arrangements and components outside of the baseband modem processor can be used in various implementations, including RF chains, power amplifiers, modulators, buffers, interleavers, adders / summers, etc.

[0110] In this example, processing system 914 may be implemented using a bus architecture, generally represented by bus 902. Depending on the specific application and overall design constraints of processing system 914, bus 902 may include any number of interconnecting buses and bridges. Bus 902 communicatively couples various circuits, including one or more processors (generally represented by processor 904), memory 905, and computer-readable media (generally represented by computer-readable media 906). Bus 902 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 are therefore not described further. Bus interface 908 provides an interface between bus 902 and transceiver 910. Transceiver 910 provides a means for communicating with various other devices over a transmission medium (e.g., an air interface). Depending on the nature of the device, a user interface 912 (e.g., a keypad, display, speaker, microphone, joystick) may also be provided. Of course, such a user interface 912 is optional and may be omitted in some examples (such as a base station).

[0111] The processor 904 is responsible for managing the bus 902 and general processing, including executing software stored on a computer-readable medium 906. This software, when executed by the processor 904, causes the processing system 914 to perform the various functions described below for any particular device. The computer-readable medium 906 and memory 905 may also be used to store data that is manipulated by the processor 904 when executing the software.

[0112] One or more processors 904 in the processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc. The software may reside on a computer-readable medium 906.

[0113] The computer-readable medium 906 may be a non-transitory computer-readable medium. For example, non-transitory computer-readable media include magnetic storage devices (e.g., hard disks, floppy disks, magnetic tapes), optical disks (e.g., compact discs (CDs) or digital versatile discs (DVDs)), smart cards, flash memory devices (e.g., cards, sticks, or key drives), random access memory (RAM), read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), registers, removable disks, and any other suitable medium for storing software and / or instructions that can be accessed and read by a computer. For example, computer-readable media may also include carrier waves, transmission lines, and any other suitable medium for transmitting software and / or instructions that can be accessed and read by a computer. The computer-readable medium 906 may be located in the processing system 914, outside the processing system 914, or distributed among multiple entities including the processing system 914. The computer-readable medium 906 may be embodied in a computer program product. For example, a computer program product may include a computer-readable medium having packaging material. Those skilled in the art will recognize how best to implement the described functionality presented throughout this disclosure depending on the particular application and the overall design constraints imposed on the overall system.

[0114] In some aspects of the present disclosure, the processor 904 may include circuits configured for various functions. For example, the processor 904 may include a resource assignment and scheduling circuit 942 configured to generate, schedule, and modify resource assignments or grants of time-frequency resources (e.g., a set of one or more resource elements). For example, the resource assignment and scheduling circuit 942 may schedule time-frequency resources within multiple TDD, FDD, or full-duplex subframes, time slots, and / or mini-slots to carry user data traffic and / or control information to and / or from multiple UEs (scheduled entities).

[0115] In some examples, the resource assignment and scheduling circuit 942 can be configured to schedule resources (aperiodic, semi-persistent, or with a predetermined periodicity) for transmission of one or more downlink and / or uplink reference signals (e.g., SSB, CSI-RS, SRS, etc.). For example, the resource assignment and scheduling circuit 942 can be configured to pre-configure each of the reference signals with a specific time-frequency resource and a specific beam / path. In some examples, the configuration information can include a TCI state or a spatial QCL relationship, which indicates the spatial beam or BPL on which the reference signal is transmitted. In some examples, each of the reference signals can be transmitted on one or more beams. The resource assignment and scheduling circuit 942 can also be configured to execute resource assignment and scheduling software 952 stored on the computer-readable medium 906 to implement one or more functions described herein.

[0116] The processor 904 may also include a communication and processing circuit 944, which is configured to communicate with one or more scheduled entities (e.g., UE). The communication and processing circuit 944 may include one or more hardware components that provide a physical structure for performing processing related to wireless communication (e.g., signal reception and / or signal transmission) and signal processing (e.g., processing received signals and / or processing signals for transmission). For example, the communication and processing circuit 944 may be configured to generate downlink user data traffic and downlink control channels, and according to the resources assigned to downlink user data traffic and / or downlink control information by the resource assignment and scheduling circuit 942, send downlink user data traffic and downlink control channels in one or more subframes, time slots and / or mini-slots. In addition, the communication and processing circuit 944 may be configured to receive and process uplink user data traffic and uplink control channels in one or more subframes, time slots and / or mini-slots according to the resources assigned to uplink user data traffic and / or uplink control information by the resource assignment and scheduling circuit 942. In some examples, the communication and processing circuitry 944 can be configured to communicate with a scheduled entity (e.g., a UE) when the UE is operating in a full-duplex mode, which is configured for concurrent transmission and reception within an overlapping bandwidth.

[0117] In some examples, the communication and processing circuitry 944 may be configured to transmit beamformed signals via the transceiver 910 and the antenna array 1420. In some examples, the communication and processing circuitry 944 may be configured to transmit downlink reference signals (e.g., SSBs and / or CSI-RS) to the UE on one or more downlink beams. In some examples, the communication and processing circuitry 944 may be configured to transmit downlink reference signals to the UE on a configured downlink beam set configured for transmission of a PDSCH including a PDSCH DMRS. For example, the configured downlink beam set may be indicated by a configured spatial Rx parameter set for the PDSCH. In some examples, the communication and processing circuitry 944 may be configured to transmit downlink reference signals on an activated downlink beam set of the configured downlink beams that is activated for transmission of the PDSCH. For example, the activated downlink beam set may be indicated by a configured spatial Rx parameter set for the PDSCH. In this example, the resource assignment and scheduling circuit 942 can be configured to schedule resources for sending downlink reference signals on the configured or activated downlink beam sets.

[0118] In some examples, the communication and processing circuitry 944 may be configured to receive beamforming signals via the transceiver 910 and the antenna array 1420. In some examples, the communication and processing circuitry 944 may also be configured to receive a corresponding SRS sent by the UE on one or more uplink beams. In some examples, the received SRS may indicate to the scheduling entity 900 an uplink beam on which the UE may send uplink user data traffic and / or uplink control information. For example, the scheduling entity 900 may be configured to identify the selected uplink beam based on an RSRP measurement of the received SRS. In other examples, instead of the UE selecting an uplink beam, the scheduling entity 900 may select an uplink beam on which the UE may communicate, and the communication and processing circuitry 944 may send to the UE spatial QCL information identifying the uplink beam selected for the UE.

[0119] The communication and processing circuit 944 may also be configured to receive a report 915 from the UE, the report 915 including a set of available downlink beams (e.g., a corresponding set) for at least one uplink beam. The report 915 may be stored, for example, in the memory 905. In some examples, the report 915 may also include a corresponding set of unavailable downlink beams for at least one uplink beam. In some examples, the report 915 includes corresponding QCL information or a corresponding TCI status identifying each of the downlink beams. For example, the QCL information or the TCI status may indicate a spatial characteristic of the downlink beam (e.g., a beam direction, a beam width, or an associated downlink reference signal).

[0120] The communication and processing circuit 944 may also be configured to send a threshold value to the UE for use in determining whether a particular downlink beam is available or unavailable for a particular uplink beam. In some examples, the communication and processing circuit 944 may also be configured to send a hysteresis value to the UE for use in determining both a first threshold used by the UE to identify an available downlink beam for each uplink beam and a second threshold used by the UE to identify an unavailable downlink beam for each uplink beam. The threshold value and the hysteresis value may be configured by the scheduling entity 900 or other network entity. The communication and processing circuit 944 may also be configured to execute the communication and processing software 954 stored on the computer-readable medium 906 to implement one or more functions described herein.

[0121] The processor 904 may also include a beam selection circuit 946 configured to select a downlink beam for transmitting a downlink transmission to the UE based on the selected uplink beam for transmitting the uplink transmission from the UE. In some examples, the beam selection circuit 946 may be configured to receive one or more SRSs from the UE to identify the selected uplink beam based on the uplink beam on which the SRSs are received. In other examples, the beam selection circuit 946 may select an uplink beam for the UE based on the received SRSs or a beam measurement report received from the UE. For example, when the channel is reciprocal, the beam selection circuit 946 may identify the downlink beam with the highest quality in the beam measurement report and derive the selected uplink beam from the downlink beam with the highest quality.

[0122] The beam selection circuitry 946 may also be configured to select a downlink beam based on the report 915, which includes a corresponding set of available downlink beams for each uplink beam received from the UE. For example, the beam selection circuitry 946 may be configured to select a downlink beam from the set of available downlink beams for the selected uplink beam as indicated in the report 915. In some examples, the selected available downlink beam may have the highest quality of the available downlink beams corresponding to the selected uplink beam. It will be appreciated that the beam selection circuitry 946 may utilize any suitable criteria when selecting a downlink beam from the set of available downlink beams for the selected uplink beam. The beam selection circuitry 946 may also be configured to execute beam selection software 956 stored on the computer-readable medium 906 to implement one or more functions described herein.

[0123] Figure 10 is a conceptual diagram illustrating an example of a hardware implementation for an exemplary scheduled entity 1000 employing a processing system 1014. For example, the scheduled entity 1000 may be as in Figure 1 、 2 , 5 , 6 and 8 , show any of the user equipment (UE).

[0124] According to various aspects of the present disclosure, an element or any portion of an element or any combination of elements may be implemented using a processing system 1014 including one or more processors 1004. The processing system 1014 may be used with Figure 9 The processing system 914 shown in FIG is substantially the same and includes a bus interface 1008, a bus 1002, a memory 1005, a processor 1004, and a computer readable medium 1006. In addition, the scheduled entity 1000 may include a user interface 1012 and a transceiver 1010, which are substantially similar to those described above in FIG. Figure 9 That is, the processor 1004 as utilized in the scheduled entity 1000 may be used to implement any one or more of the processes described below.

[0125] In some aspects of the present disclosure, processor 1004 may include communication and processing circuitry 1042 configured to communicate with a scheduling entity (e.g., a base station or gNB). Communication and processing circuitry 1042 may include one or more hardware components that provide a physical structure for performing processing related to wireless communication (e.g., signal reception and / or signal transmission) and signal processing (e.g., processing received signals and / or processing signals for transmission). For example, communication and processing circuitry 1042 may be configured to generate uplink user data traffic and uplink control channels and transmit the uplink user data traffic and uplink control channels within one or more subframes, time slots, and / or mini-slots, based on resources assigned by the scheduling entity for the uplink user data traffic and / or uplink control information. Furthermore, communication and processing circuitry 1042 may be configured to receive and process downlink user data traffic and downlink control channels within one or more subframes, time slots, and / or mini-slots, based on resources assigned by the scheduling entity for the downlink user data traffic and / or downlink control information. In some examples, the communication and processing circuitry 1042 can be configured to communicate with the scheduling entity while operating in full-duplex mode, which is configured for concurrent transmission and reception within overlapping bandwidths. In some examples, the communication and processing circuitry 1042 can be configured to transmit and / or receive beamformed signals via the transceiver 1010 and the antenna array 1020.

[0126] In some examples, the communication and processing circuit 1042 can be configured to receive and process one or more downlink reference signals (e.g., CSI-RS and / or SSB) or other downlink signals on one or more downlink beams based on the TCI state of the downlink signal. For example, the communication and processing circuit 1042 can be configured to receive downlink signals on a configured downlink beam set or on an activated downlink beam set in the configured downlink beam. For example, the configured or activated downlink beam set can be indicated by a configured or activated spatial Rx parameter set for transmitting PDSCH. In addition, the communication and processing circuit 1042 can be configured to generate one or more uplink reference signals (e.g., SRS) and send one or more uplink reference signals on one or more uplink beams based on the spatial QCL relationship associated with the uplink reference signal.

[0127] The communication and processing circuit 1042 may also be configured to send a report that includes a set of available downlink beams (e.g., a corresponding set) for at least one uplink beam. In some examples, the report may also include a corresponding set of unavailable downlink beams for at least one uplink beam. In some examples, the report includes corresponding QCL information or a corresponding TCI status identifying each of the downlink beams. For example, the QCL information or TCI status may indicate a spatial characteristic of the downlink beam (e.g., a beam direction, a beam width, or an associated downlink reference signal).

[0128] The communication and processing circuitry 1042 may also be configured to receive a network-configured threshold value for use in determining whether a particular downlink beam is available or unavailable for a particular uplink beam. In some examples, the communication and processing circuitry 1042 may also be configured to receive a hysteresis value for use in determining both a first threshold for identifying an available downlink beam for each uplink beam and a second threshold for identifying an unavailable downlink beam for each uplink beam. The communication and processing circuitry 1042 may also be configured to execute the communication and processing software 1052 stored on the computer-readable medium 1006 to implement one or more functions described herein.

[0129] The processor 1004 may also include a beam quality measurement circuit 1044 configured to measure, for each of the one or more uplink beams, a beam quality of one or more downlink beams received from the scheduling entity to generate a plurality of beam quality measurements 1016. In some examples, the beam quality measurement circuit 1044 may be configured to select a downlink beam on which to measure beam quality from a set of configured downlink beams configured by the scheduling entity for communication with the scheduling entity 1000. For example, the beam quality measurement circuit 1044 may be configured to measure beam quality on each configured downlink beam or on a subset of the set of configured downlink beams. In other examples, the beam quality measurement circuit 1044 may be configured to select a downlink beam on which to measure beam quality from a set of activated downlink beams in the set of configured downlink beams activated by the scheduling entity for communication with the scheduled entity 1000. For example, the beam quality measurement circuit 1044 may be configured to measure beam quality on each activated downlink beam or on a subset of the set of activated downlink beams.

[0130] In some examples, beam quality measurements 1016 can include RSRP, RSRQ, RSSI, and / or SINR on each downlink beam of one or more downlink beams for each uplink beam. Each of beam quality measurements 1016 (e.g., RSRP, RSRQ, RSSI, and SINR) can be degraded by self-interference caused by concurrent communications on both uplink and downlink beams within overlapping bandwidths when operating in full-duplex mode. Thus, each downlink beam quality measurement 1016 takes into account self-interference experienced on a particular downlink beam due to uplink transmissions on the uplink beam.

[0131] In some examples, the SINR includes a self-interference contribution that can also be measured. For example, when the scheduled entity is configured for uplink beam management (e.g., the scheduled entity can select an uplink beam for communication with the scheduling entity), the beam quality measurement circuit 1044 can be configured to measure the self-interference contribution on each downlink beam for different SRSs (e.g., different uplink beams). In some examples, the self-interference contribution on the downlink beam due to the transmission of the SRS on the uplink beam can be measured on resource elements (REs) that have the same downlink beam quality as the downlink beam. In other examples, the self-interference contribution on the downlink beam due to the transmission of the SRS on the uplink beam can be measured on REs that have a different downlink beam quality than the downlink beam. The beam quality measurement circuit 1044 can also be configured to execute beam quality measurement software 1054 stored on the computer-readable medium 1006 to implement one or more functions described herein.

[0132] The processor 1004 may also include a beam selection circuit 1046 configured to identify, for each of the one or more uplink beams, a corresponding set of available downlink beams on which downlink transmissions can be received from the scheduling entity based on the beam quality measurement 1016. In some examples, the beam selection circuit 1046 may also be configured to identify, for each of the one or more uplink beams, a corresponding set of unavailable downlink beams based on the beam quality measurement 1016. Here, the set of available downlink beams and the set of unavailable downlink beams are non-overlapping (e.g., each downlink beam is included in only one of the sets of available and unavailable downlink beams).

[0133] In some examples, the beam selection circuit 1046 can be configured to identify available downlink beam sets and unavailable downlink beam sets based on one or more thresholds 1015 maintained, for example, in the memory 1005. In some examples, the scheduled entity 1000 can maintain different thresholds for different types of beam quality measurements (e.g., RSRP, RSRQ, RSSI, and SINR). In some examples, the beam selection circuit 1046 can receive a network-configured threshold amount (or a separate threshold amount for each beam quality measurement type) and, optionally, a network-configured hysteresis value (or a separate hysteresis value for each beam quality measurement type) and determine one or more of the thresholds 1015 based on the threshold amount and the hysteresis value. For example, the beam selection circuit 1046 can be configured to set the beam quality threshold 1015 equal to the network-configured threshold amount. In this example, the beam selection circuit can identify available downlink beam sets as downlink beams for which corresponding beam quality measurements 1016 exceed the beam quality threshold 1015. Furthermore, the beam selection circuitry may identify the set of unusable downlink beams as downlink beams for which corresponding beam quality measurements 1016 are less than a beam quality threshold 1015 .

[0134] As another example, the beam selection circuit 1046 can be configured to set the first threshold 1015 equal to the sum of the network-configured threshold amount and a hysteresis value, and set the second threshold 1015 equal to the difference between the network-configured threshold amount and the hysteresis value. In this example, the beam selection circuit 1046 can be configured to identify the set of available downlink beams as downlink beams for which the corresponding beam quality measurement 1016 exceeds the first threshold 1015. In addition, the beam selection circuit 1046 can be configured to identify the set of unavailable downlink beams as downlink beams for which the corresponding beam quality measurement 1016 is less than the second threshold 1015.

[0135] In any of the above examples (e.g., with or without a hysteresis value), the beam selection circuitry 1046 may further be configured to, for each uplink beam, identify the set of available downlink beams as downlink beams for which associated beam quality measurements exceed a beam quality threshold (or first threshold) 1015 for a duration. For example, when performing an initial beam quality measurement 1016 on a downlink beam for an uplink beam, the beam selection circuitry 1046 may initialize a timer 1018 maintained, for example, in the memory 1005. Upon expiration of the timer 1018, the beam selection circuitry 1046 may then compare each of the beam quality measurements 1016 obtained on the downlink beam for each uplink beam to the beam quality threshold 1015 (or first threshold) 1015. In some examples, if each of the beam quality measurements 1016 on the downlink beam obtained within the timer 1018 period exceeds the beam quality threshold (or first threshold) 1015, the beam selection circuit 1046 can determine that the downlink beam is an available downlink beam for the uplink beam. Otherwise, the beam selection circuit 1046 can determine that the downlink beam is an unavailable downlink beam for the uplink beam. In some examples, the beam selection circuit 1046 can also use the measurement number threshold 1015 to determine whether the downlink beam is available or unavailable. For example, if the number of beam quality measurements 1016 that exceed the beam quality threshold (or first quality threshold) 1015 when the timer 1018 expires exceeds the measurement number threshold 1015, the beam selection circuit 1046 can determine that the downlink beam is an available downlink beam for the uplink beam.

[0136] The beam selection circuit 1046 can also be configured to (e.g., via the communication and processing circuit 1042 and the transceiver 1010) generate and send a report that includes a corresponding set of available downlink beams for each of the one or more uplink beams. In some examples, the report can also include a corresponding set of unavailable downlink beams for each of the one or more uplink beams. In some examples, the report can be a beam measurement report that also includes a beam quality measurement obtained for each of the downlink beams for each uplink beam. In other examples, the report can be a separate report generated and sent separately from the beam measurement report. In some examples, the report includes corresponding QCL information or corresponding TCI status for each downlink beam in each of the sets identified. For example, the QCL information or TCI status can indicate a spatial characteristic of the downlink beam (e.g., beam direction, beam width, or associated downlink reference signal).

[0137] The beam selection circuit 1046 may also be configured to select an uplink beam (or multiple uplink beams) for communication with the scheduling entity. In some examples, the beam selection circuit 1046 may be configured to receive spatial QCL information indicating the selected uplink beam from the scheduling entity. In other examples, the scheduled entity 1000 may be configured for uplink beam management or uplink non-codebook-based MIMO. In this example, the beam selection circuit 1046 may be configured to select an uplink beam. In some examples, the beam selection circuit 1046 may be configured to select an uplink beam based on a beam quality measurement 1016 for each uplink beam. For example, the beam selection circuit 1046 may select the uplink beam for which the corresponding downlink beam quality measurement 1016 has the highest value. The beam selection circuit 1046 may also be configured to indicate the selected uplink beam (or uplink beams) to the scheduling entity. For example, the beam selection circuit 1046 may indicate the selected uplink beam by sending an SRS to the scheduling entity on the selected uplink beam. The beam selection circuit 1046 may also be configured to execute the beam selection software 1056 stored on the computer-readable medium 1006 to implement one or more functions described herein.

[0138] Figure 11 is a flow chart of an exemplary process 1100 for a UE to identify available downlink beams for each uplink beam when operating in full-duplex mode according to some aspects of the present disclosure. As described below, some or all of the illustrated features may be omitted in certain implementations within the scope of the present disclosure, and some of the illustrated features may not be required for implementation of all embodiments. In some examples, process 1100 may be performed by Figure 10 In some examples, the process 1100 can be performed by any suitable device or unit for performing the functions or algorithms described below.

[0139] At block 1102, a scheduled entity (e.g., a UE) may communicate with a scheduling entity (e.g., a base station) in full-duplex mode configured for concurrent transmission and reception within overlapping bandwidths. Figure 10 The communication and processing circuitry 1042 and transceiver 1010 are shown and described as being capable of communicating with a base station in full-duplex mode.

[0140] At block 1104, the UE may obtain a beam quality measurement for each uplink beam in one or more uplink beams, each beam quality measurement corresponding to a downlink beam in a plurality of downlink beams. In some examples, the UE may select a downlink beam on which to measure beam quality from a set of configured downlink beams configured by a base station for communication with the UE. In other examples, the UE may select a downlink beam on which to measure beam quality from a set of activated downlink beams in a set of configured downlink beams activated by a base station for communication with the UE. In some examples, the beam quality measurement may include RSRP, RSRQ, RSSI, and / or SINR on each downlink beam in one or more downlink beams for each uplink beam. For example, the above reference Figure 10 The beam quality measurement circuit 1044 is shown and described to obtain downlink beam quality measurements for each uplink beam.

[0141] At block 1106, the UE may identify, for each of the one or more uplink beams, a set of available downlink beams from among the plurality of downlink beams based on the beam quality measurement. Figure 10 The beam selection circuitry 1046 shown and described can identify a set of available downlink beams (e.g., a corresponding set) for each uplink beam. In some examples, the UE can also identify, for each of the one or more uplink beams, a corresponding set of unavailable downlink beams based on a beam quality measurement. In some examples, the UE can identify the set of available downlink beams and the set of unavailable downlink beams based on one or more thresholds.

[0142] For example, for each uplink beam in one or more uplink beams, the UE may compare a beam quality measurement associated with each downlink beam in a plurality of downlink beams with a threshold and identify a set of available downlink beams for which the corresponding beam quality measurement exceeds the threshold. The UE may also identify a set of available downlink beams as downlink beams for which the associated beam quality measurement exceeds the threshold for a duration. Similarly, for each uplink beam in one or more uplink beams, the UE may identify a set of unavailable downlink beams for which the beam quality measurement is less than the threshold. In some examples, the UE may receive a network-configured threshold amount and a network-configured hysteresis value from a base station and determine, based on the threshold amount and the hysteresis value, a first threshold for use in determining a set of available downlink beams and a second threshold for use in determining a set of unavailable downlink beams.

[0143] At block 1108, the UE may send a report to the base station indicating a set of available downlink beams for at least one uplink beam. In some examples, the report may also include a corresponding set of unavailable downlink beams for each of the one or more uplink beams. In some examples, the report includes corresponding QCL information or corresponding TCI status identifying each downlink beam in each of the sets. For example, the QCL information or TCI status may indicate a spatial characteristic of the downlink beam (e.g., a beam direction, a beam width, or an associated downlink reference signal). For example, the beam selection circuit 1046, together with the communication and processing circuit 1042 and the transceiver 1010, may generate a report and send it to the base station.

[0144] Figure 12 is a flow chart of an example process 1200 for a UE to identify and use beams when operating in full-duplex mode according to some aspects of the present disclosure. In some examples, the process 1200 may be combined with Figure 11 1100 (e.g., as part of and / or in addition to). As described below, some or all of the illustrated features may be omitted in certain implementations within the scope of the present disclosure, and some illustrated features may not be required for implementation of all embodiments. In some examples, process 1200 may be performed by Figure 10 In some examples, process 1200 can be performed by any suitable device or unit for performing the functions or algorithms described below.

[0145] At block 1202, a scheduled entity (e.g., a UE) may select a plurality of downlink beams (from a set of configured downlink beams) configured by a base station for communication with a user equipment. Figure 11 For example, the above reference Figure 10 The beam quality measurement circuitry 1044, communication and processing circuitry 1042, and transceiver 1010 shown and described can receive beam configuration information identifying configured downlink beams from the gNB (e.g., via RRC signaling), and then receive activation / deactivation information indicating which of these downlink beams is currently activated (e.g., via MAC-CE). In some examples, the beam quality measurement circuitry 1044 can then select to use the activated downlink beams to identify the available downlink beams (in Figure 11 1106).

[0146] At block 1204, the UE may identify a selected uplink beam (from among the one or more uplink beams) Figure 11In some examples, the above reference Figure 10 The beam selection circuitry 1046, communication and processing circuitry 1042, and transceiver 1010 shown and described can receive an indication of a selected uplink beam from a base station. For example, the base station can send spatial QCL information identifying the uplink beam selected for the UE to the UE. In some examples, the beam selection circuitry 1046 can identify the selected uplink beam based on RSRP measurements and then, in cooperation with the communication and processing circuitry 1042 and transceiver 1010, send an indication of the selected uplink beam to the base station.

[0147] At block 1206, the UE may receive a downlink signal (from block 1204) from the base station on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam. Figure 10 The communication and processing circuitry 1042 and transceiver 1010 shown and described may monitor a downlink channel (e.g., PDSCH) to receive data from a gNB during a full-duplex mode of operation.

[0148] Figure 13 is a flow chart of an example process 1300 for a UE to identify quasi-co-location information for a downlink beam when operating in full-duplex mode according to some aspects of the present disclosure. In some examples, process 1300 may be combined with Figure 11 As described below, some or all of the illustrated features may be omitted in certain implementations within the scope of the present disclosure, and some illustrated features may not be required for implementation of all embodiments. In some examples, process 1300 may be performed by Figure 10 In some examples, process 1300 can be performed by any suitable device or unit for performing the functions or algorithms described below.

[0149] At block 1302, a scheduled entity (e.g., a UE) may identify a plurality of downlink beams (from a plurality of downlink beams) based on respective quasi-co-location information indicating respective spatial characteristics for each of the plurality of downlink beams. Figure 11 For example, the above reference Figure 10 The beam selection circuit 1046, communication and processing circuit 1042, and transceiver 1010 shown and described can determine quasi-co-location information and / or corresponding transmission configuration indication (TCI) status for each downlink beam in multiple downlink beams based on beam configuration information received from a base station.

[0150] At block 1304, the UE may send a report (from Figure 11 108 ), the report including corresponding quasi-co-location information or corresponding transmission configuration indication status for each downlink beam in a corresponding downlink beam within a set of available downlink beams (e.g., a corresponding set) for at least one uplink beam. For example, the beam selection circuit 1046 , together with the communication and processing circuit 1042 and the transceiver 1010 , may include the quasi-co-location information or corresponding transmission configuration indication status for the available downlink beams in the report and send the report to the base station.

[0151] Figure 14 is a flow chart illustrating an exemplary process 1400 for a base station to select a downlink beam based on a selected uplink beam when a UE is operating in full-duplex mode according to some aspects of the present disclosure. As described below, some or all of the illustrated features may be omitted in certain implementations within the scope of the present disclosure, and some illustrated features may not be required for implementation of all embodiments. In some examples, process 1400 may be performed by Figure 9 In some examples, process 1400 can be performed by any suitable device or unit for performing the functions or algorithms described below.

[0152] At block 1402, a scheduling entity (e.g., a base station) may communicate with a scheduled entity (e.g., a UE) operating in full-duplex mode configured for concurrent transmission and reception within overlapping bandwidths. Figure 9 The communication and processing circuitry 944 and transceiver 910 are shown and described to enable communication with a UE operating in full-duplex mode.

[0153] At block 1404, the base station may transmit to the UE on multiple downlink beams to facilitate beam quality measurement on each downlink beam in the multiple downlink beams for each uplink beam in the one or more uplink beams. In some examples, the base station may transmit a downlink reference signal on the multiple downlink beams to facilitate beam quality measurement. The multiple downlink beams may include, for example, a set of configured downlink beams or activated downlink beams for the UE. For example, as described above with reference to Figure 9 The communication and processing circuitry 944 and transceiver 910 are shown and described to transmit on multiple downlink beams to the UE.

[0154] At block 1406, the base station may receive a report from the UE, wherein the report indicates a set of available downlink beams (e.g., a corresponding set) for at least one of the one or more uplink beams from a plurality of downlink beams based on the beam quality measurement. In some examples, the report may also include a corresponding set of unavailable downlink beams for the at least one uplink beam. In some examples, the report includes corresponding QCL information or a corresponding TCI status identifying each of the downlink beams. For example, the QCL information or the TCI status may indicate a spatial characteristic of the downlink beam (e.g., a beam direction, a beam width, or an associated downlink reference signal). For example, the above reference Figure 9 The communication and processing circuitry 944 and transceiver 910 are shown and described as being operable to receive reports from the UE.

[0155] At block 1408, the base station may identify a selected uplink beam from among the one or more uplink beams that the UE may use to communicate with the base station. In some examples, the base station may be configured to receive one or more SRSs from the UE and identify the selected uplink beam based on the uplink beam on which the SRSs are received. In other examples, the base station may select an uplink beam for the UE based on the received SRSs or a beam measurement report received from the UE. For example, as described above with reference to Figure 9 The beam selection circuitry 946 is shown and described to identify the selected uplink beam.

[0156] At block 1410, the base station may transmit a downlink signal to the UE on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam. For example, the base station may select an available downlink beam from the set of available downlink beams corresponding to the selected uplink beam for transmitting the downlink signal. In some examples, the selected available downlink beam may have the highest quality of the available downlink beams corresponding to the selected uplink beam. For example, as described above with reference to Figure 9 The beam selection circuitry 946, communication and processing circuitry 944, and transceiver 910 are shown and described to transmit downlink signals to the UE on the selected available downlink beam.

[0157] Figure 15 is a flow chart of an exemplary process 1500 for a base station to select a downlink beam based on a selected uplink beam when a UE is operating in full-duplex mode according to some aspects of the present disclosure. As described below, some or all of the illustrated features may be omitted in certain implementations within the scope of the present disclosure, and some illustrated features may not be required for implementation of all embodiments. In some examples, process 1500 may be performed by Figure 9 In some examples, process 1500 can be performed by any suitable device or unit for performing the functions or algorithms described below.

[0158] At block 1502, a scheduling entity (e.g., a base station) may receive a report indicating a set of available downlink beams (e.g., a corresponding set) for at least one uplink beam from a plurality of downlink beams based on beam quality measurements made by a user equipment (e.g., from Figure 14 For example, the above reference Figure 9 The communication and processing circuitry 944 and transceiver 910 shown and described may monitor a data channel (eg, PUSCH) for reporting messages from the UE.

[0159] At block 1504, the base station may determine, based on the report, corresponding quasi-co-location information or corresponding transmission configuration indication status, each indicating corresponding spatial characteristics of each corresponding downlink beam within a set of available downlink beams (e.g., a corresponding set) for at least one uplink beam. Figure 9 The beam selection circuitry 946 is shown and described as being operable to parse the report message received from the UE to identify the beam direction and / or beam width for each respective downlink beam.

[0160] At block 1506, the base station may transmit a downlink signal via at least one of the available downlink beams according to the quasi co-location information or the corresponding transmission configuration indication state. Figure 9 The beam selection circuitry 946, communication and processing circuitry 944, and transceiver 910 shown and described may use the identified beam direction and / or beamwidth to transmit a downlink signal to the UE.

[0161] In one configuration, a scheduled entity (e.g., a UE) includes: a unit for communicating with a scheduling entity in a full-duplex mode, wherein the full-duplex mode is configured for concurrent transmission and reception within an overlapping bandwidth; a unit for obtaining a beam quality measurement for each uplink beam in one or more uplink beams, each beam quality measurement corresponding to a corresponding downlink beam in a plurality of downlink beams; a unit for identifying, for each uplink beam in the one or more uplink beams, a set of available downlink beams in a plurality of downlink beams based on the beam quality measurement; and a unit for sending a report to the scheduling entity, the report indicating a set of available downlink beams (e.g., a corresponding set) for at least one uplink beam in the one or more uplink beams.

[0162] In one aspect, the aforementioned means for communicating, means for obtaining, means for identifying, and means for sending may be Figure 10 The processor 1004 shown in FIG is configured to perform the functions described by the aforementioned units. For example, the unit for communicating with the scheduling entity may include Figure 10 As another example, the means for obtaining a beam quality measurement for each of the one or more uplink beams may include the communication and processing circuitry 1042 and the transceiver 1010 shown in FIG. Figure 10 As yet another example, the means for identifying a set of available downlink beams for each of the one or more uplink beams may include: Figure 10 As another example, the unit for sending a report may include the beam selection circuit 1046 shown in Figure 10 The beam selection circuit 1046, the communication and processing circuit 1042, and the transceiver 1010 are shown in FIG. In another aspect, the aforementioned means may be a circuit or any device configured to perform the functions recited by the aforementioned means.

[0163] In another configuration, a scheduling entity (e.g., a base station) includes: a unit for communicating with a scheduled entity in a full-duplex mode, the full-duplex mode being configured for concurrent transmission and reception within an overlapping bandwidth; a unit for transmitting to the scheduling entity on multiple downlink beams to facilitate beam quality measurement on each downlink beam in the multiple downlink beams for each uplink beam in one or more uplink beams; a unit for receiving a report from the scheduled entity, the report including a set of available downlink beams (e.g., a corresponding set) for at least one uplink beam in the multiple downlink beams based on the beam quality measurement; a unit for identifying a selected uplink beam in the one or more uplink beams; and a unit for sending a downlink signal to the scheduled entity on an available downlink beam in the set of available downlink beams corresponding to the selected uplink beam.

[0164] In one aspect, the aforementioned means for communicating with the scheduled entity, means for transmitting on a plurality of downlink beams, means for receiving a report, means for identifying a selected uplink beam, and means for transmitting a downlink signal on an available downlink beam may be included in Figure 9 The processor 904 shown in is configured to perform the functions described by the aforementioned units. For example, the unit for communicating with the scheduled entity, the unit for transmitting on multiple downlink beams, and the unit for receiving reports may include Figure 9As another example, the means for identifying the selected uplink beam may include the communication and processing circuit 944 and the transceiver 910 shown in FIG. Figure 9 As yet another example, the means for transmitting a downlink signal on an available downlink beam may include the means for transmitting a downlink signal on an available downlink beam. Figure 9 , the beam selection circuit 946, the communication and processing circuit 944, and the transceiver 910 shown in FIG. In another aspect, the aforementioned means may be a circuit or any means configured to perform the functions recited by the aforementioned means.

[0165] The following provides a summary of several aspects of the disclosure.

[0166] Aspect 1: A method for wireless communication at a user equipment, the method comprising: communicating with a base station in a full-duplex mode, the full-duplex mode being configured for concurrent transmission and reception within an overlapping bandwidth; obtaining a beam quality measurement for each uplink beam in one or more uplink beams, each beam quality measurement corresponding to a corresponding downlink beam in a plurality of downlink beams; identifying, for each uplink beam in the one or more uplink beams, a set of available downlink beams in the plurality of downlink beams based on the beam quality measurement; and sending a report to the base station, the report indicating the set of available downlink beams for at least one uplink beam in the one or more uplink beams.

[0167] Aspect 2. The method according to Aspect 1 further includes: identifying a selected uplink beam among the one or more uplink beams; and receiving a downlink signal from the base station on an available downlink beam within the available downlink beam set corresponding to the selected uplink beam.

[0168] Aspect 3. The method according to aspect 1 or 2 further includes: selecting the multiple downlink beams from a set of configured downlink beams configured by the base station for communication with the user equipment.

[0169] Aspect 4. A method according to Aspect 3, wherein selecting the multiple downlink beams further includes: selecting the multiple downlink beams from the activated downlink beam set within the configured downlink beam set activated by the base station for communication with the user equipment.

[0170] Aspect 5. The method according to aspect 4, wherein selecting the multiple downlink beams further comprises: selecting a subset of the configured downlink beam set as the multiple downlink beams.

[0171] Aspect 6. The method according to aspect 4, wherein selecting the multiple downlink beams further comprises: selecting a subset of the activated downlink beam set as the multiple downlink beams.

[0172] Aspect 7. The method according to any one of Aspects 1 to 6 further includes: identifying the multiple downlink beams based on corresponding quasi-co-location information indicating corresponding spatial characteristics for each of the multiple downlink beams.

[0173] Aspect 8. The method according to aspect 7, wherein the spatial characteristic comprises at least one of a beam direction, a beam width, or an associated downlink reference signal.

[0174] Aspect 9. A method according to Aspect 7, wherein sending the report further includes: sending the report within the set of available downlink beams for the at least one uplink beam, the report including corresponding quasi-co-location information or corresponding transmission configuration indication status for each downlink beam in the corresponding downlink beams.

[0175] Aspect 10. The method according to any one of Aspects 1 to 9 further includes: for each uplink beam among the one or more uplink beams, identifying a set of unavailable downlink beams among the multiple downlink beams based on the beam quality measurement, wherein the set of available downlink beams and the set of unavailable downlink beams are non-overlapping.

[0176] Aspect 11. A method according to aspect 10, wherein sending the report also includes: sending the report, the report indicating the available downlink beam set and the unavailable downlink beam set in the multiple downlink beams for each uplink beam in the one or more uplink beams.

[0177] Aspect 12. A method according to any one of Aspects 1 to 11, wherein, for each uplink beam in the one or more uplink beams, identifying the set of available downlink beams further includes: comparing the beam quality measurement associated with each downlink beam in the multiple downlink beams with a threshold; and identifying the set of available downlink beams for which the corresponding beam quality measurement exceeds the threshold.

[0178] Aspect 13. A method according to Aspect 12, wherein, for each uplink beam in the one or more uplink beams, identifying the set of available downlink beams further includes: identifying the set of available downlink beams for which the corresponding beam quality measurement exceeds the threshold within a duration.

[0179] Aspect 14. A method according to Aspect 12, wherein the threshold includes a first threshold, and the method further includes: comparing the beam quality measurement associated with each downlink beam in the multiple downlink beams with a second threshold; and for each uplink beam in the one or more uplink beams, identifying a set of unavailable downlink beams in the multiple downlink beams for which the corresponding beam quality measurement is less than the second threshold.

[0180] Aspect 15. The method according to aspect 14 further includes: receiving a threshold amount and a hysteresis value from the base station; and determining the first threshold and the second threshold based on the threshold amount and the hysteresis value.

[0181] Aspect 16. A method according to any one of Aspects 1 to 15, wherein the beam quality measurement includes at least one of the following: reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), and signal-to-interference-plus-noise ratio (SINR).

[0182] Aspect 17. The method according to aspect 16, wherein the SINR includes a self-interference contribution.

[0183] Aspect 18: A user equipment (UE), comprising: a transceiver configured to communicate with a radio access network; a memory; and a processor communicatively coupled to the transceiver and the memory, wherein the processor and the memory are configured to perform any one of aspects 1 to 17.

[0184] Aspect 19: An apparatus configured for wireless communication, comprising at least one unit for performing any one of aspects 1 to 17.

[0185] Aspect 20: A non-transitory computer-readable medium storing computer-executable code, comprising code for causing an apparatus to perform any one of aspects 1 to 17.

[0186] Aspect 21: A method for wireless communication at a base station, the method comprising: communicating with a user equipment (UE) in a full-duplex mode, the full-duplex mode being configured for concurrent transmission and reception within an overlapping bandwidth; transmitting to the UE on multiple downlink beams to facilitate beam quality measurement on each downlink beam in the multiple downlink beams for each uplink beam in one or more uplink beams; receiving a report from the UE, wherein the report includes a set of available downlink beams in the multiple downlink beams for at least one uplink beam in the one or more uplink beams based on the beam quality measurement; identifying a selected uplink beam in the one or more uplink beams; and sending a downlink signal to the UE on an available downlink beam in the set of available downlink beams corresponding to the selected uplink beam.

[0187] Aspect 22. The method according to aspect 21, wherein transmitting on the multiple downlink beams further comprises: transmitting a downlink reference signal on each downlink beam in the multiple downlink beams.

[0188] Aspect 23. A method according to aspect 21 or 22, wherein the multiple downlink beams include a configured downlink beam set configured by the base station for communication with the UE.

[0189] Aspect 24. A method according to aspect 23, wherein the multiple downlink beams include an activated downlink beam set in the configured downlink beam set that is activated by the base station for communication with the UE.

[0190] Aspect 25. A method according to any one of Aspects 21 to 24, wherein receiving the report also includes: receiving the report including corresponding quasi-co-location information or corresponding transmission configuration indication status, and the corresponding quasi-co-location information or corresponding transmission configuration indication status each indicate the corresponding spatial characteristics of each corresponding downlink beam in the available downlink beam set for the at least one uplink beam.

[0191] Aspect 26. The method according to aspect 25, wherein the spatial characteristic comprises at least one of the following: a beam direction, a beam width, or an associated downlink reference signal.

[0192] Aspect 27. A method according to any one of Aspects 21 to 26, wherein receiving the report further includes: receiving the report indicating the available downlink beam set and the corresponding unavailable downlink beam set for the at least one uplink beam among the multiple downlink beams, wherein the available downlink beam set and the unavailable downlink beam set are non-overlapping.

[0193] Aspect 28. The method according to any one of Aspects 21 to 27 further includes: sending a threshold amount and a hysteresis value to the UE for the UE to use in determining at least one threshold associated with the beam quality measurement obtained on each downlink beam in the multiple downlink beams for each uplink beam in the one or more uplink beams.

[0194] Aspect 29: A base station (BS), comprising: a transceiver; a memory; and a processor communicatively coupled to the transceiver and the memory, wherein the processor is configured to perform any one of aspects 21 to 28.

[0195] Aspect 30: An apparatus configured for wireless communication, comprising at least one means for performing any one of aspects 21 to 28.

[0196] Aspect 31: A non-transitory computer-readable medium storing computer-executable code, comprising code for causing an apparatus to perform any one of aspects 21 to 28.

[0197] Several aspects of wireless communication networks have been presented with reference to exemplary implementations. As those skilled in the art will readily appreciate, various aspects described throughout this disclosure may be extended to other telecommunication systems, network architectures, and communication standards.

[0198] For example, various aspects may be implemented in other systems defined by 3GPP, such as LTE, Evolved Packet System (EPS), Universal Mobile Telecommunications System (UMTS), and / or Global System for Mobile Communications (GSM). Various aspects may also be extended to systems defined by 3rd Generation Partnership Project 2 (3GPP2), such as CDMA2000 and / or Evolution-Data Optimized (EV-DO). Other examples may be implemented in systems employing Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Ultra-Wideband (UWB), Bluetooth, and / or other suitable systems. The actual telecommunication standard, network architecture, and / or communication standard employed depends on the specific application and the overall design constraints imposed on the system.

[0199] In this disclosure, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation or aspect described herein as "exemplary" should not be construed as preferred or advantageous over other aspects of the disclosure. Similarly, the term "aspect" does not require that all aspects of the disclosure include the discussed feature, advantage, or mode of operation. The term "coupled" is used herein to refer to a direct or indirect coupling between two objects. For example, if object A physically contacts object B, and object B contacts object C, objects A and C can still be considered to be coupled to each other even if they are not in direct physical contact with each other. For example, a first object can be coupled to a second object even if the first object has never been in direct physical contact with the second object. The terms "electronic circuit" and "circuit" are used broadly and are intended to include hardware implementations of electronic devices and conductors (wherein these electronic devices and conductors, when connected and configured, enable the performance of the functions described in this disclosure, without limitation as to the type of electronic circuit) as well as software implementations of information and instructions (wherein these information and instructions, when executed by a processor, enable the performance of the functions described in this disclosure).

[0200] Can Figure 1-15 One or more of the components, steps, features, and / or functions shown in the drawings may be rearranged and / or combined into a single component, step, feature, or function, or embodied in several components, steps, or functions. In addition, the elements, components, steps, and / or functions discussed may be added without departing from the novel features disclosed herein. Figure 1 、 2 The devices, apparatuses and / or components shown in , 5, 6, 9 and 10 may be configured to perform one or more of the methods, features or steps described herein. The novel algorithms described herein may also be efficiently implemented in software and / or embedded in hardware.

[0201] It is to be understood that the specific order or hierarchy of steps in the methods disclosed herein is merely an illustration of exemplary processes. It is to be understood that the specific order or hierarchy of steps in these methods may be rearranged based on design preferences. The accompanying method claims present elements of the various steps in a sample order and are not intended to be limited to the specific order or hierarchy presented unless expressly recited herein.

[0202] The previous description is provided to enable any person skilled in the art to implement the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Accordingly, the claims are not intended to be limited to the aspects shown herein, but rather to the full scope consistent with the language of the claims, wherein, unless otherwise specifically stated, reference to an element in the singular is not intended to mean "one and only one," but rather "one or more." Unless otherwise specifically stated, the term "some" refers to one or more. A phrase referring to "at least one" of a list of items refers to any combination of those items, including a single member. For example, "at least one of a, b, or c" is intended to encompass: a; b; c; a and b; a and c; b and c; and a, b, and c. All structural and functional equivalents of the elements of the various aspects described throughout this disclosure are expressly incorporated herein by reference and are intended to be included in the claims, where such structural and functional equivalents are or become known to those skilled in the art. In addition, no disclosure herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims.

Claims

1. A method for communicating at a user equipment in a wireless communication network, the method comprising: communicating with the base station in a full-duplex mode configured for concurrent transmission and reception within overlapping bandwidths; obtaining a beam quality measurement for each uplink beam of the one or more uplink beams, each beam quality measurement corresponding to a respective downlink beam of the plurality of downlink beams, wherein the beam quality measurement is obtained when transmitting the uplink beam of the one or more uplink beams to the base station in the full-duplex mode; identifying, for each uplink beam of the one or more uplink beams, a set of available downlink beams of the plurality of downlink beams based on the beam quality measurement; and A report is sent to the base station, the report indicating the set of available downlink beams for at least one of the one or more uplink beams.

2. The method according to claim 1, further comprising: identifying a selected uplink beam among the one or more uplink beams; as well as A downlink signal is received from the base station on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam.

3. The method according to claim 1, further comprising: The plurality of downlink beams are selected from a set of configured downlink beams configured by the base station for communication with the user equipment.

4. The method according to claim 3, wherein: Selecting the plurality of downlink beams further comprises: The plurality of downlink beams are selected from a set of activated downlink beams within the set of configured downlink beams that are activated by the base station for communication with the user equipment.

5. The method according to claim 4, wherein Selecting the plurality of downlink beams further comprises: A subset of the configured set of downlink beams is selected as the plurality of downlink beams.

6. The method according to claim 4, wherein: Selecting the plurality of downlink beams further comprises: A subset of the set of activated downlink beams is selected as the plurality of downlink beams.

7. The method according to claim 1, further comprising: The plurality of downlink beams are identified based on respective quasi-co-located information indicative of respective spatial characteristics for each of the plurality of downlink beams.

8. The method according to claim 7, wherein: The spatial characteristic comprises at least one of a beam direction, a beam width, or an associated downlink reference signal.

9. The method according to claim 7, wherein: Sending the report also includes: The report is sent within the set of available downlink beams for the at least one uplink beam, the report including corresponding quasi-co-location information or corresponding transmission configuration indication status for each of the corresponding downlink beams.

10. The method according to claim 1, further comprising: For each uplink beam of the one or more uplink beams, a set of unusable downlink beams in the plurality of downlink beams is identified based on the beam quality measurement, wherein the set of usable downlink beams and the set of unusable downlink beams are non-overlapping.

11. The method according to claim 10, wherein: Sending the report also includes: The report is sent, the report indicating the set of available downlink beams and the set of unavailable downlink beams in the plurality of downlink beams for each of the one or more uplink beams.

12. The method according to claim 1, wherein For each uplink beam of the one or more uplink beams, identifying the set of available downlink beams further comprises: comparing the beam quality measurement associated with each downlink beam in the plurality of downlink beams to a threshold; and The set of available downlink beams for which corresponding beam quality measurements exceed the threshold are identified.

13. The method according to claim 12, wherein: For each uplink beam of the one or more uplink beams, identifying the set of available downlink beams further comprises: The set of available downlink beams for which the corresponding beam quality measurements exceed the threshold over a duration are identified.

14. The method according to claim 12, wherein: The threshold includes a first threshold, and the method further includes: comparing the beam quality measurement associated with each downlink beam of the plurality of downlink beams to a second threshold; For each uplink beam of the one or more uplink beams, a set of unusable downlink beams of the plurality of downlink beams for which corresponding beam quality measures are less than the second threshold is identified.

15. The method according to claim 14, further comprising: receiving a threshold amount and a hysteresis value from the base station; as well as The first threshold and the second threshold are determined based on the threshold amount and the hysteresis value.

16. The method according to claim 1, wherein The beam quality measurement includes at least one of: reference signal received power (RSRP), reference signal received quality (RSRQ), received signal strength indicator (RSSI), and signal-to-interference-plus-noise ratio (SINR).

17. The method according to claim 16, wherein The SINR includes self-interference contribution.

18. A scheduled entity in a wireless communication network, the scheduled entity comprising: a transceiver for wirelessly communicating with a scheduling entity; Memory; as well as a processor communicatively coupled to the transceiver and the memory, the processor configured to: communicating with the scheduling entity in a full-duplex mode configured for concurrent transmission and reception within overlapping bandwidths; obtaining a beam quality measurement for each uplink beam of the one or more uplink beams, each beam quality measurement corresponding to a respective downlink beam of the plurality of downlink beams, wherein the beam quality measurement is obtained when transmitting the uplink beam of the one or more uplink beams to the scheduling entity in the full-duplex mode; identifying, for each uplink beam of the one or more uplink beams, a set of available downlink beams of the plurality of downlink beams based on the beam quality measurement; and A report is sent to the scheduling entity via the transceiver, the report indicating the set of available downlink beams for at least one of the one or more uplink beams.

19. The scheduled entity according to claim 18, wherein: The processor is further configured to: selecting the plurality of downlink beams from a set of configured downlink beams configured by the scheduling entity for communication with the scheduled entity; identifying a selected uplink beam among the one or more uplink beams; as well as A downlink signal is received from the scheduling entity on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam.

20. The scheduled entity according to claim 18, wherein: The processor is further configured to: For each uplink beam of the one or more uplink beams, a set of unusable downlink beams in the plurality of downlink beams is identified based on the beam quality measurement, wherein the set of usable downlink beams and the set of unusable downlink beams are non-overlapping.

21. A method for communicating in a wireless communication network at a base station, the method comprising: communicating with a user equipment (UE) in a full-duplex mode configured for concurrent transmission and reception within overlapping bandwidths; transmitting to the UE on a plurality of downlink beams to facilitate beam quality measurement on each of the plurality of downlink beams for each of one or more uplink beams received from the UE while transmitting on the plurality of downlink beams; receiving a report from the UE, wherein the report indicates a set of available downlink beams from the plurality of downlink beams for at least one of the one or more uplink beams based on the beam quality measurement; identifying a selected uplink beam of the one or more uplink beams; and A downlink signal is transmitted to the UE on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam.

22. The method according to claim 21, wherein Transmitting on the plurality of downlink beams further comprises: A downlink reference signal is transmitted on each downlink beam of the plurality of downlink beams.

23. The method according to claim 21, wherein The plurality of downlink beams comprises a set of configured downlink beams configured by the base station for communication with the UE.

24. The method according to claim 23, wherein The plurality of downlink beams include an activated downlink beam set of the configured downlink beam sets that is activated by the base station for communication with the UE.

25. The method according to claim 21, wherein Receiving the report further includes: Receive the report including corresponding quasi-co-location information or corresponding transmission configuration indication status, each of which indicates a corresponding spatial characteristic of each corresponding downlink beam within the set of available downlink beams for the at least one uplink beam.

26. The method according to claim 25, wherein The spatial characteristic comprises at least one of: a beam direction, a beam width, or an associated downlink reference signal.

27. The method according to claim 21, wherein Receiving the report further includes: The report is received indicating the set of available downlink beams and corresponding sets of unavailable downlink beams for the at least one uplink beam from the plurality of downlink beams, wherein the set of available downlink beams and the set of unavailable downlink beams are non-overlapping.

28. The method of claim 21, further comprising: A threshold amount and a hysteresis value are sent to the UE for use by the UE in determining at least one threshold associated with the beam quality measurement obtained on each of the plurality of downlink beams for each of the one or more uplink beams.

29. A scheduling entity in a wireless communication network, the scheduling entity comprising: a transceiver for wirelessly communicating with a scheduled entity; Memory; as well as a processor communicatively coupled to the transceiver and the memory, the processor configured to: communicating with the scheduled entity in a full-duplex mode configured for concurrent transmission and reception within overlapping bandwidths; transmitting, via the transceiver, to the scheduled entity on a plurality of downlink beams to facilitate beam quality measurement on each of the plurality of downlink beams for each of one or more uplink beams, wherein the uplink beams of the one or more uplink beams are received from the scheduled entity when transmitting on the plurality of downlink beams; receiving a report from the scheduled entity, wherein the report comprises a set of available downlink beams from the plurality of downlink beams for at least one of the one or more uplink beams based on the beam quality measurement; identifying a selected uplink beam of the one or more uplink beams; and A downlink signal is transmitted to the scheduled entity via the transceiver on an available downlink beam within the set of available downlink beams corresponding to the selected uplink beam.

30. The scheduling entity according to claim 29, wherein: The report includes corresponding quasi-co-location information or corresponding transmission configuration indication status, and the corresponding quasi-co-location information or corresponding transmission configuration indication status each indicate the corresponding spatial characteristics of each corresponding downlink beam within the available downlink beam set for the at least one uplink beam.

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