Layer 1 signal to interference plus noise ratio (L1-SINR) measurements using network configured measurement gaps

Abstract

Various aspects of this disclosure relate to a method for wireless communication in a user equipment (UE). In some aspects, the UE receives configuration information from a base station for performing beam pair selection measurements at the UE regarding a subset of candidate beams. The beam pair selection measurements may include at least self-interference measurements at the UE between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams. The configuration information indicates measurement gaps between self-interference measurements. The UE performs beam pair selection measurements based on the configuration information and selects at least one Tx / Rx beam pair based on the performed beam pair selection measurements. The UE sends a report to the base station including the selected at least one Tx / Rx beam pair.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit and priority of U.S. Patent Application No. 17 / 353,554, filed June 21, 2021, and U.S. Provisional Patent Application No. 63 / 071,970, filed August 28, 2020, the entire contents of which are incorporated herein by reference. Technical Field

[0003] In summary, the techniques discussed below relate to wireless communication systems, and more specifically, the techniques discussed below relate to Layer 1 signal-to-interference-plus-noise ratio (L1-SINR) measurements utilizing measurement gaps in network configurations. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different wireless devices to communicate at the city, national, regional, and even global levels. An example telecommunications standard is 5G New Radio (NR). 5G NR is part of the continuous evolution of mobile broadband released by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., in conjunction with the Internet of Things (IoT),) and others. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). Some aspects of 5G NR can be based on the 4G Long Term Evolution (LTE) standard. There is a need for further improvements to 5G NR technology. These improvements can also be applied to other multiple access technologies and telecommunications standards that adopt them. Summary of the Invention

[0006] To provide a basic understanding of one or more aspects of this disclosure, a brief overview of those aspects is given below. This overview is not a comprehensive summary of all anticipated features of this disclosure, and is neither intended to identify key or essential elements of all aspects of this disclosure, nor to depict the scope of any or all aspects of this disclosure. Its sole purpose is to present some concepts of one or more aspects of this disclosure in a simplified form as a prelude to the more detailed description that follows.

[0007] In one example, a method for wireless communication at a user equipment (UE) is disclosed. The method may include: receiving from a base station configuration information for performing beam pair selection measurements at the UE regarding a subset of candidate beams, the beam pair selection measurements including at least self-interference measurements at the UE between one or more transmit (Tx) beams and one or more receive (Rx) beams in the candidate beam subset, wherein the configuration information indicates measurement gaps between the self-interference measurements. The method may further include: performing the beam pair selection measurements based on the configuration information; selecting at least one Tx / Rx beam pair from the candidate beam subset based on the performed beam pair selection measurements; and sending a report to the base station including the selected at least one Tx / Rx beam pair.

[0008] In one example, a method for wireless communication at a base station (BS) is disclosed. The method may include: sending configuration information to a user equipment (UE) for beam pair selection measurements at the UE regarding a subset of candidate beams at the UE, the beam pair selection measurements including at least self-interference measurements between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams at the UE, wherein the configuration information indicates measurement gaps between the self-interference measurements. The method may further include: receiving from the UE a report including at least one Tx / Rx beam pair selected by the UE based on the beam pair selection measurements.

[0009] Other aspects include: an apparatus operable to, configured to, or otherwise adapted to perform the methods described above and elsewhere herein; a non-transitory computer-readable medium comprising instructions that, when executed by one or more processors of the apparatus, cause the apparatus to perform the methods described above and elsewhere herein; a computer program product embodied on a computer-readable storage medium including code for performing the methods described above and elsewhere herein; and an apparatus comprising units for performing the methods described above and elsewhere herein. For example, an apparatus may include a processing system, a device having a processing system, or a processing system cooperating via one or more networks.

[0010] These and other aspects of the invention will become more apparent after reading the detailed description in conjunction with the accompanying drawings. While features may be discussed below with respect to certain embodiments and drawings, all aspects may include one or more of the advantageous features discussed herein. In other words, while one or more aspects may be discussed as having certain advantageous features, one or more of these features may also be used according to the various embodiments discussed herein. Similarly, while exemplary aspects may be discussed below as aspects of an apparatus, system, or method, it should be understood that these exemplary aspects can be implemented in various apparatuses, systems, and methods.

[0011] For illustrative purposes, the following description and accompanying figures illustrate certain features. Attached Figure Description

[0012] The accompanying drawings depict certain features of the various aspects described herein, and are not intended to limit the scope of this disclosure.

[0013] Figure 1 It is a schematic diagram of a wireless communication system based on some aspects.

[0014] Figure 2 It is a conceptual diagram based on some aspects of radio access networks.

[0015] Figure 3 This is a block diagram illustrating a wireless communication system that supports multiple-input multiple-output (MIMO) communication.

[0016] Figure 4 It is a schematic diagram of the organization of radio resources in the air interface using orthogonal frequency division multiplexing (OFDM) based on some aspects.

[0017] Figure 5 An example application of timing advance offset at the first UE (UE1) and the second UE (UE2) is shown.

[0018] Figure 6 This is a schematic diagram illustrating an example of full-duplex (FD) communication.

[0019] Figure 7 The procedure for determining the reception timing difference between the reception time of the DL signal at the UE's receive (Rx) beam and the reception time of the UL signal at the UE's receive (Rx) beam, wherein the UL signal is transmitted from the UE's transmit (Tx) beam.

[0020] Figure 8 This is a schematic diagram illustrating the beam measurement process according to various aspects of this disclosure.

[0021] Figure 9 This is a schematic diagram illustrating an example beam scanning operation for self-interference measurement (SIM) according to various aspects of this disclosure.

[0022] Figure 10 The diagram illustrates example timing of downlink (DL) and uplink (UL) signals between the UE and a first transmit / receive point (TRP) according to various aspects of this disclosure, as well as example timing of DL and UL signals between the UE and a second TRP.

[0023] Figure 11 An example procedure for measuring different reception timing differences for different Tx / Rx beam pairs at the UE is shown, according to various aspects of this disclosure.

[0024] Figure 12 This is a block diagram that conceptually illustrates an example of a hardware implementation for a user equipment (UE) based on some aspects of this disclosure.

[0025] Figure 13 This is a block diagram that conceptually illustrates an example of a hardware implementation for a base station (BS) according to some aspects of this disclosure.

[0026] Figure 14 This is a flowchart illustrating an exemplary process for wireless communication at a UE, based on some aspects of this disclosure.

[0027] Figure 15 This is a flowchart illustrating an exemplary process for wireless communication at a BS, according to some aspects of this disclosure. Detailed Implementation

[0028] The detailed description below, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and not as representing only the configurations in which the concepts described herein can be implemented. 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 can be implemented without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0029] While aspects are described herein by way of example, those skilled in the art will understand that additional implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and package arrangements. For example, aspects and / or uses may arise via integrated chip aspects and other devices based on non-modular components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, AI-enabled devices, etc.). While some examples may or may not be specific to a particular use case or application, a wide variety of applicability to the described innovations can exist. Implementations can range from chip-level or modular components to non-modular, non-chip-level implementations, and further to aggregated, distributed, or OEM devices or systems incorporating one or more aspects of the described innovations. In some practical settings, devices incorporating the described aspects and features may also necessary include additional components and features for the implementation and enforcement of the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily involve multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The innovations described herein are intended to be implemented in a variety of devices, chip-level components, systems, distributed arrangements, end-user equipment, etc., with different sizes, shapes, and constructions.

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

[0031] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR research has designated the operating bands used for these IF bands as the frequency range name FR3 (7.126GHz-24.25GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to IF band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6GHz. For example, three higher operating frequency bands have been designated as the frequency range names FR2x (52.6GHz-71GHz), FR4 (71GHz-114.25GHz), and FR5 (114.25GHz-275GHz). Each of these higher frequency bands falls within the EHF band.

[0032] In light of the above, unless otherwise specifically stated, it should be understood that when the term "below 6 GHz" is used herein, it can broadly refer to frequencies that are less than 6 GHz, within FR1, or that may include intermediate frequency band frequencies. Furthermore, unless otherwise specifically stated, it should be understood that when the term "millimeter wave" is used herein, it can broadly refer to frequencies that may include intermediate frequency band frequencies, within FR2, FR2x, FR4 and / or FR5, or within the EHF band.

[0033] The various concepts presented throughout this disclosure can be implemented in a wide variety of telecommunications systems, network architectures, and communication standards. Reference is now made to... Figure 1 Various aspects of this disclosure are shown with reference to a wireless communication system 100, by way of illustrative example and not limitation. The wireless communication system 100 includes three interaction domains: a core network 102, a radio access network (RAN) 104, and a user equipment (UE) 106. With the aid of the wireless communication system 100, the UE 106 can be implemented to perform data communication with an external data network 110 (such as, but not limited to, the Internet).

[0034] RAN 104 can implement any one or more suitable wireless communication technologies to provide radio access to UE 106. As an example, RAN 104 can operate according to the 3GPP New Radio (NR) specification (often referred to as 5G). As another example, RAN 104 can operate according to a hybrid of 5G NR and the Evolved Universal Terrestrial Radio Access Network (eUTRAN) standard (often referred to as LTE). 3GPP refers to this hybrid RAN as Next Generation RAN or NG-RAN. Of course, many other examples can be utilized within the scope of this disclosure.

[0035] As shown in the figure, RAN 104 includes multiple base stations 108. Broadly speaking, a base station is a network element in a radio access network responsible for radio transmission and reception to or from a UE in one or more cells. In different technologies, standards, or contexts, those skilled in the art may refer to a base station as a base transceiver unit (BTS), radio base station, radio transceiver, transceiver functional unit, basic service set (BSS), extended service set (ESS), access point (AP), node B (NB), evolved node B (eNB), gNodeB (gNB), or some other suitable term.

[0036] Radio access network 104 is also shown to support wireless communication for multiple mobile devices. In 3GPP standards, 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, Radio Unit, Remote Unit, Mobile Device, Radio Device, Wireless Communication Device, Remote Device, Mobile Subscriber Station, Access Terminal (AT), Mobile Terminal, Radio Terminal, Remote Terminal, Handset, Terminal, User Agent, Mobile Client, Client, or any other suitable term. The UE may be a device (e.g., a mobile device) that provides access to network services to a user.

[0037] In this document, a “mobile” device does not necessarily need to be mobile and 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 phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal computers (PCs), notebooks, netbooks, smartbooks, tablet devices, personal digital assistants (PDAs), and a wide variety of embedded systems, for example, corresponding to the “Internet of Things” (IoT). Additionally, a mobile device may be an automobile 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 helicopter, a remote control device, consumer devices and / or wearable devices such as glasses, wearable cameras, virtual reality devices, smartwatches, health or fitness trackers, digital audio players (e.g., MP3 players), cameras, game consoles, etc. Additionally, mobile devices can be digital home or smart home devices, such as home audio, video and / or multimedia equipment, home appliances, vending machines, smart lighting, home security systems, smart meters, etc. Furthermore, mobile devices can be smart energy devices, security devices, solar panels or solar arrays, municipal infrastructure equipment controlling electricity (e.g., smart grids), lighting, water, etc.; industrial automation and enterprise equipment; logistics controllers; agricultural equipment; military defense equipment, vehicles, aircraft, ships, and weapons, etc. Further still, mobile devices can provide connected medical or telemedicine support (e.g., telemedicine). Telemedicine devices can include telemedicine monitoring devices and telemedicine management devices, whose communications can be given priority processing or priority access relative to other types of information, for example, priority access for the transmission of critical service data, and / or relevant QoS aspects for the transmission of critical service data.

[0038] Wireless communication between RAN 104 and UE 106 can be described as utilizing an air interface. Transmissions over the air interface from a base station (e.g., base station 108) to one or more UEs (e.g., UE 106) can be referred to as downlink (DL) transmissions. According to certain aspects of this disclosure, the term downlink can refer to point-to-multipoint transmissions originating from a scheduling entity (further described below; e.g., base station 108). Another way to describe this scheme is 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 other aspects of this disclosure, the term uplink can refer to point-to-point transmissions originating from a scheduled entity (further described below; e.g., UE 106).

[0039] In some examples, access to the air interface can be scheduled, where 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 this disclosure, as further discussed below, the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more scheduled entities. That is, for scheduled communication, UE 106 (which may be a scheduled entity) can use the resources allocated by scheduling entity 108.

[0040] 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 to schedule resources for one or more scheduled entities (e.g., one or more other UEs).

[0041] like Figure 1 As shown, scheduling entity 108 can broadcast downlink service 112 to one or more scheduled entities 106. Broadly speaking, scheduling entity 108 is a node or device responsible for scheduling services (including downlink service 112, and in some examples, uplink service 116 from one or more scheduled entities 106 to scheduling entity 108) in a wireless communication network. On the other hand, scheduled entity 106 is a node or device that receives downlink control information 114 (including but not limited to scheduling information (e.g., permission), synchronization or timing information, or other control information) from another entity in the wireless communication network (e.g., scheduling entity 108).

[0042] Typically, base station 108 may include a backhaul interface for communicating with the backhaul section 120 of a wireless communication system. Backhaul 120 provides a link between base station 108 and core network 102. Furthermore, in some examples, the backhaul network may provide interconnection between corresponding base stations 108. Various types of backhaul interfaces can be used, such as direct physical connections, virtual networks, or backhaul interfaces using any suitable transport network.

[0043] Core network 102 may be part of wireless communication system 100 and may be independent of the radio access technology used in RAN 104. In some examples, core network 102 may be configured according to 5G standards (e.g., 5GC). In other examples, core network 102 may be configured according to 4G Evolved Packet Core (EPC) or any other suitable standard or configuration.

[0044] Now for reference Figure 2 Instead of limiting it, a schematic diagram of RAN 200 is provided. In some examples, RAN 200 can be combined with the above-described and Figure 1 The same as RAN 104 shown. The geographical area covered by RAN 200 can be divided into multiple cellular areas (cells), and user equipment (UE) can uniquely identify these cellular areas (cells) based on an identifier 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 in a cell are served by the same base station. Radio links within a sector can be identified by a single logical identifier belonging to that sector. In a cell divided into multiple sectors, multiple sectors within the cell can be formed using multiple sets of antennas, each responsible for communicating with UEs within a portion of the cell.

[0045] exist Figure 2In the illustration, two base stations 210 and 212 are shown in cells 202 and 204; and a third base station 214 is shown for controlling the Remote Radio Header (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 illustrated example, cells 202, 204, and 216 can be referred to as macro cells because base stations 210, 212, and 214 support cells with large sizes. Furthermore, a base station 218 is shown in small cell 208 (e.g., microcell, picocell, femtocell, home base station, home node B, home eNodeB, etc.), where small cell 208 may 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 according to system design and component constraints.

[0046] It will be understood that the radio access network 200 may include any number of wireless base stations and cells. Furthermore, relay nodes may be deployed to extend the size or coverage area of ​​a given cell. Base stations 210, 212, 214, and 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 used in conjunction with those described above and... Figure 1 The base station / scheduling entity 108 shown is the same.

[0047] In some examples, an unmanned aerial vehicle (UAV) 220 (which may be a drone or a quadcopter) can be a mobile network node and can be configured to act as a UE. For example, UAV 220 can operate within cell 202 by communicating with base station 210.

[0048] Within RAN 200, a cell may include UEs capable of communicating with one or more sectors of each cell. Furthermore, each base station 210, 212, 214, and 218 can be configured to provide access to the core network to all UEs within the corresponding cell (e.g., as in...). Figure 1 (as shown in and / or 2). For example, UEs 222 and 224 can communicate with base station 210; UEs 226 and 228 can communicate with base station 212; UEs 230 and 232 can communicate with base station 214 via RRH 216; and UE 234 can communicate with base station 218. In some examples, UEs 222, 224, 226, 228, 230, 232, 234, 238, 240 and / or 242 can communicate with the base station described above and... Figure 1 The UE / scheduled entity 106 shown in the figure and / or the one described above and in Figure 2The same as UE 202 shown in the figure.

[0049] In another 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., UEs 226 and 228) can communicate with each other using peer-to-peer (P2P) or sidelink signal 227 without relaying the communication through a base station (e.g., base station 212). In another example, UE 238 is shown communicating with UEs 240 and 242. Here, 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., secondary) sidelink devices. In yet another example, UEs can act as scheduling entities in device-to-device (D2D), peer-to-peer (P2P), or vehicle-to-vehicle (V2V) networks and / or mesh networks. In the mesh network example, UEs 240 and 242 can optionally communicate directly with each other in addition to communicating with scheduling entity 238. Therefore, in a wireless communication system with scheduled access to time-frequency resources and with cellular, P2P, or mesh configurations, a scheduling entity and one or more scheduled entities can communicate using the scheduled resources.

[0050] In a radio access network 200, the ability of a UE to communicate while moving (independent of its location) is referred to as mobility. This is typically addressed within the Access and Mobility Management Function (AMF, not shown). Figure 1 Under the control of the core network 102, the AMF establishes, maintains and releases various physical channels between the UE and the radio access network. The AMF may include the Security Context Management Function (SCMF) for managing the security context of both the control plane and user plane functions, and the Security Anchor Function (SEF) for performing authentication.

[0051] In various aspects of this disclosure, radio access network 200 may utilize DL-based mobility or UL-based mobility to achieve mobility and handover (i.e., the UE's connection switching from one radio channel to another). In a network configured for DL-based mobility, during a call with a scheduling entity, or at any other time, the UE may monitor various parameters of the signal from its serving cell and various parameters of neighboring cells. Based on the quality of these parameters, the UE may maintain communication with one or more neighboring cells. During this time, if the UE moves from one cell to another, or if the signal quality from a neighboring cell exceeds the signal quality from the serving cell for a given amount of time, the UE may perform a handoff or handover from the serving cell to a neighboring (target) cell. For example, UE 224 (shown as a vehicle, but any suitable form of UE may be used) may move from a geographic area corresponding to its serving cell 202 to a geographic area corresponding to a neighboring cell 206. When the signal strength or quality from neighboring cell 206 exceeds that of serving cell 202 for a given amount of time, UE 224 may send a report message to its serving base station 210 indicating this condition. In response, UE 224 may receive a handover command, and UE may perform a handover to cell 206.

[0052] In a network configured for UL-based mobility, the network can utilize UL reference signals from each UE to select a serving cell for each UE. In some examples, base stations 210, 212, and 214 / 216 can broadcast uniform synchronization signals (e.g., a uniform primary synchronization signal (PSS), a uniform secondary synchronization signal (SSS), and a uniform physical broadcast channel (PBCH)). UEs 222, 224, 226, 228, 230, and 232 can receive these uniform synchronization signals, derive carrier frequencies and time slot timings based on these synchronization signals, and transmit uplink pilots or reference signals in response to the derived timings. The uplink pilot signal transmitted by a UE (e.g., UE 224) can be simultaneously received by two or more cells (e.g., base stations 210 and 214 / 216) within the radio access network 200. Each of these cells can measure the strength of the pilot signal, and the radio access network (e.g., one or more of the central nodes within base stations 210 and 214 / 216 and / or the core network) can determine the serving cell for UE 224. As UE 224 moves through radio access network 200, the network can continue to monitor the uplink pilot signal transmitted by UE 224. When the signal strength or quality of the pilot signal measured by a neighboring cell exceeds the signal strength or quality measured by the serving cell, network 200 can, with or without notifying UE 224, hand over UE 224 from the serving cell to the neighboring cell.

[0053] Although the synchronization signals transmitted by base stations 210, 212, and 214 / 216 can be uniform, these synchronization signals may not identify a specific cell, but rather an area of ​​multiple cells operating on the same frequency and / or using the same timing. The use of areas in 5G networks or other next-generation communication networks enables uplink-based mobility frameworks and improves the efficiency of both the UE and the network because it reduces the number of mobility messages that need to be exchanged between the UE and the network.

[0054] In various implementations, the air interface in the radio access network 200 can utilize licensed spectrum, unlicensed spectrum, or shared spectrum. Licensed spectrum typically provides exclusive use of a portion of the spectrum by means of a license purchased from a government regulatory agency by a mobile network operator. Unlicensed spectrum provides shared use of a portion of the spectrum without requiring a government-approved license. While some technical rules are generally still required to access unlicensed spectrum, in general, any operator or device can obtain access. Shared spectrum can fall between licensed and unlicensed spectrum, where technical rules or restrictions may be required to access the spectrum, but the spectrum can still be shared by multiple operators and / or multiple RATs. For example, a licensee of a portion of licensed spectrum can provide licensed shared access (LSA) to share the spectrum with other parties (e.g., those with appropriate licensee-defined conditions for access).

[0055] The air interface in the radio access network 200 can utilize one or more duplex algorithms. Duplex refers to a point-to-point communication link where two endpoints can communicate with each other in both directions. Full-duplex means that two endpoints can communicate with each other simultaneously. Half-duplex means that at any given time, only one endpoint can send information to the other. In wireless links, full-duplex channels typically rely on physical isolation between the transmitter and receiver, as well as appropriate interference cancellation techniques. Full-duplex simulation is frequently implemented for wireless links using Frequency Division Duplex (FDD) or Space Division Duplex (SDD). In FDD, transmissions in different directions operate at different carrier frequencies. In SDD, spatial multiplexing separates transmissions in different directions on a given channel.

[0056] In some aspects of this disclosure, the scheduling entity and / or the scheduled entity can be configured for beamforming and / or multiple-input multiple-output (MIMO) techniques. Figure 3 An example of a MIMO-enabled wireless communication system 300 is shown. In the MIMO system, transmitter 302 includes multiple transmit antennas 304 (e.g., N transmit antennas), and receiver 306 includes multiple receive antennas 308 (e.g., M receive antennas). Therefore, there are N×M signal paths 310 from the transmit antennas 304 to the receive antennas 308. Each of transmitter 302 and receiver 306 can be implemented, for example, within scheduling entity 108, scheduled entity 106, or any other suitable wireless communication device.

[0057] The use of this multi-antenna technology enables wireless communication systems to leverage the spatial domain to support spatial multiplexing, beamforming, and transmit diversity. Spatial multiplexing can be used to simultaneously transmit different data streams (also known as layers) 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 is known as multi-user MIMO (MU-MIMO). This is achieved by spatially precoding each data stream (i.e., multiplying the data stream by different weights and phase shifts) and then transmitting each spatially precoded stream through multiple transmit antennas on the downlink. The spatially precoded data streams arrive at the UE with distinct spatial signatures, allowing each UE to recover one or more data streams destined for that UE. On the uplink, each UE transmits spatially precoded data streams, enabling the base station to identify the source of each spatially precoded data stream.

[0058] The number of data streams or layers corresponds to the transmission rank. Typically, the rank of a MIMO system 300 is limited by the number of transmit or receive antennas 304 or 308, whichever is lower. Additionally, channel conditions at the UE and other considerations such as available resources at the base station can also affect the transmission rank. For example, the rank assigned to a particular UE on the downlink (and therefore, the number of data streams) can be determined based on a rank indicator (RI) sent from the UE to the base station. The RI can be determined based on antenna configuration (e.g., the number of transmit and receive antennas) and the signal-to-interference-and-noise ratio (SINR) measured on each receive antenna. For example, the RI can indicate the number of layers that can be supported under current channel conditions. The base station can use the RI, along with resource information (e.g., available resources and data volume to be scheduled for the UE), to assign a transmission rank to the UE.

[0059] In Time Division Duplex (TDD) systems, UL and DL are reciprocal because they each use different time slots with the same frequency bandwidth. Therefore, in a TDD system, the base station can assign a rank for DL ​​MIMO transmission based on UL SINR measurements (e.g., based on sounding reference signals (SRS) or other pilot signals transmitted from the UE). Based on the assigned rank, the base station can then transmit CSI-RS using separate C-RS sequences for each layer to provide multi-layer channel estimation. According to the CSI-RS, the UE can measure channel quality across layers and resource blocks and feed back CQI and RI values ​​to the base station for updating the rank and assigning REs for future downlink transmissions.

[0060] In the simplest case, such as Figure 3As shown, rank-2 spatial multiplexing transmission on a 2x2 MIMO antenna configuration sends a data stream from each transmit antenna 304. Each data stream arrives at each receive antenna 308 along a different signal path 310. The receiver 306 can then reconstruct the data stream using the received signals from each receive antenna 308.

[0061] The air interface in the radio access network 200 can utilize one or more multiplexing and multiple access algorithms to enable simultaneous communication between devices. For example, the 5G NR specification provides multiple access for UL transmissions from UEs 222 and 224 to base station 210, and multiplexing of DL transmissions from base station 210 to one or more UEs 222 and 224 using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP). Additionally, for UL transmissions, the 5G NR specification provides support for Discrete Fourier Transform Extended OFDM (DFT-s-OFDM) with CP (also known as Single-Carrier FDMA (SC-FDMA)). However, within the scope of this 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 Extended Multiple Access (RSMA), or other suitable multiple access schemes. In addition, time division multiplexing (TDM), code division multiplexing (CDM), frequency division multiplexing (FDM), orthogonal frequency division multiplexing (OFDM), sparse code multiplexing (SCM) or other appropriate multiplexing schemes can be used to provide multiplexing for DL ​​transmission from base station 210 to UEs 222 and 224.

[0062] Reference Figure 4 The OFDM waveforms illustrated herein are used to describe various aspects of this disclosure. Those skilled in the art will understand that various aspects of this disclosure can be applied to DFT-s-OFDMA waveforms in substantially the same manner as described below. That is, while some examples of this disclosure may focus on OFDM links for clarity, it should be understood that the same principles can also be applied to DFT-s-OFDMA waveforms.

[0063] Within this disclosure, a frame refers to a duration of 10 ms used for wireless transmission, where each frame consists of 10 subframes, each subframe being 1 ms long. On a given carrier, there may be a set of frames in the UL and another set of frames in the DL. Now refer to... Figure 4An expanded view of an exemplary DL subframe 402 is shown, which illustrates the OFDM resource grid 404. However, as will be readily apparent to those skilled in the art, the PHY transmission structure for any particular application may differ from the example described herein, depending on any number of factors. Here, time is in the horizontal direction and in OFDM symbols; while frequency is in the vertical direction and in subcarriers or tones.

[0064] Resource grid 404 can be used to schematically represent time-frequency resources for a given antenna port. That is, in a MIMO implementation with multiple available antenna ports, the corresponding multiple resource grids 404 can be available for communication. 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 RE can represent one or more bits of information. In some examples, a block of REs may 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 may include 12 subcarriers, the number of which is independent of the digital scheme used. In some examples, depending on the digital scheme, an RB may include any appropriate number of consecutive OFDM symbols in the time domain. Within this disclosure, it is assumed that a single RB (such as RB 408) corresponds exactly to a single communication direction (for a given device, either the transmit or receive direction).

[0065] UEs typically utilize only a subset of resource grid 404. An RB can be the smallest unit of resources that can be allocated to a UE. Therefore, the more RBs scheduled for a UE and the more sophisticated the modulation scheme selected for the air interface, the higher the data rate for the UE.

[0066] In this illustration, RB 408 is shown occupying less than the entire bandwidth of subframe 402, with some subcarriers shown above and below RB 408. In a given implementation, subframe 402 can have a bandwidth corresponding to any number of one or more RBs 408. Furthermore, while RB 408 is shown occupying less than the entire duration of subframe 402 in this illustration, this is merely one possible example.

[0067] Each subframe 402 (e.g., a 1ms subframe) can consist of one or more adjacent time slots. Figure 4In the example shown, a subframe 402 includes four time slots 410, as an illustrative example. In some examples, time slots may be defined based on a specified number of OFDM symbols with a given cyclic prefix (CP) length. For example, a time slot may include 7 or 14 OFDM symbols with a nominal CP. Other examples may include micro-time slots with shorter durations (e.g., 1, 2, 4, or 7 OFDM symbols). In some cases, these micro-time slots may be transmitted by preempting resources scheduled for ongoing time slot transmissions for the same or different UEs.

[0068] An expanded view of time slot 410 shows that time slot 410 includes a control area 412 and a data area 414. Typically, control area 412 may carry a control channel (e.g., PDCCH), and data area 414 may carry a data channel (e.g., PDSCH or PUSCH). Of course, a time slot may contain all DLs, all ULs, or at least one DL portion and at least one UL portion. Figure 4 The simple structure shown is merely exemplary in nature, and different time slot structures can be utilized, and different time slot structures can include one or more regions in each of the control region and data region.

[0069] Despite Figure 4 Although not shown, the various REs 406 within RB 408 can be scheduled to carry one or more physical channels, including control channels, shared channels, data channels, etc. Other REs 406 within RB 408 can also carry pilot or reference signals. These pilot or reference signals can provide channel estimation for the receiving device to perform corresponding channel estimation, which enables coherent demodulation / detection of the control and / or data channels within RB 408.

[0070] In DL transmission, a transmitting device (e.g., scheduling entity 108) may allocate one or more REs 406 (e.g., within control area 412) to carry DL control information 114 to one or more scheduled entities 106. The DL control information 114 includes one or more DL control channels that typically carry information originating from higher layers, such as the Physical Broadcast Channel (PBCH), Physical Downlink Control Channel (PDCCH), etc. Additionally, DL REs may be allocated to carry DL physical signals that do not typically 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 (DM-RS); a phase tracking reference signal (PT-RS); a channel state information reference signal (CSI-RS), etc.

[0071] Synchronization signals PSS and SSS (collectively referred to as SS) (and in some examples, PBCH) can be transmitted in an SS block comprising four consecutive OFDM symbols numbered via time indices in ascending order from 0 to 3. In the frequency domain, the SS block can be extended to 240 adjacent subcarriers, where the subcarriers are numbered via frequency indices in ascending order from 0 to 239. Of course, this disclosure is not limited to this particular SS block configuration. Within the scope of this disclosure, other non-limiting examples may utilize more or fewer synchronization signals; may include one or more supplementary channels in addition to PBCH; may omit PBCH; and / or may use discontinuous symbols in the SS block.

[0072] The PDCCH can carry downlink control information (DCI) for one or more UEs in the cell. This may include, but is not limited to, power control commands, scheduling information, permission and / or assignment of REs for DL ​​and UL transmissions.

[0073] In UL transmission, the transmitting device (e.g., the scheduled entity 106) can use one or more REs 406 to carry UL control information 118 (UCI). The UCI can originate from a higher layer and be sent to the scheduling entity 108 via one or more UL control channels (such as the Physical Uplink Control Channel (PUCCH), Physical Random Access Channel (PRACH), etc.). Furthermore, the UL RE can carry UL physical signals that typically do not carry information from higher layers, such as demodulation reference signals (DM-RS), phase tracking reference signals (PT-RS), sounding reference signals (SRS), etc. In some examples, the control information 118 may include a scheduling request (SR), i.e., a request to schedule uplink transmissions for the scheduling entity 108. Here, in response to an SR transmitted on the control channel 118, the scheduling entity 108 can send downlink control information 114, which can schedule resources for uplink packet transmissions.

[0074] UL control information may also include Hybrid Automatic Repeat Request (HARQ) feedback, such as Acknowledgment (ACK) or Negative Acknowledgment (NACK), Channel State Information (CSI), or any other suitable UL control information. HARQ is a technique well-known to those skilled in the art, in which the integrity of packet transmissions can be verified for accuracy at the receiving end, for example, using any appropriate integrity verification mechanism, such as a checksum or Cyclic Redundancy Check (CRC). If the integrity of the transmission is acknowledged, an ACK can be sent; otherwise, a NACK can be sent. In response to a NACK, the transmitting device can send a HARQ retransmission, which can implement append-and-pause, incremental redundancy, etc.

[0075] In addition to control information, one or more RE 406s (e.g., within data area 414) may be allocated for user data or service data. These services may be carried on one or more service channels (e.g., a Physical Downlink Shared Channel (PDSCH) for DL ​​transmissions; or a Physical Uplink Shared Channel (PUSCH) for UL transmissions).

[0076] To enable the UE to gain initial access to the cell, the RAN can provide system information (SI) characterizing the cell. This system information can be provided using Minimal System Information (MSI) and Other System Information (OSI). MSI can be periodically broadcast on the cell to provide initial cell access and obtain the most basic information required by any OSI that can be periodically broadcast or sent on demand. In some examples, MSI can be provided on two different downlink channels. For example, the PBCH can carry the Master Information Block (MIB), and the PDSCH can carry System Information Block Type 1 (SIB1). In this art, SIB1 may be referred to as Residual Minimal System Information (RMSI).

[0077] OSI can include any SI that is not broadcast in MSI. In some examples, PDSCH can carry multiple sibs discussed above, not limited to SIB1. Here, OSI can be provided in these SIBs (e.g., SIB2 and above).

[0078] The above description and in Figure 1 and Figure 4 The channels or carriers shown may not be all channels or carriers that can be used between scheduling entity 108 and scheduled entity 106, and those skilled in the art will recognize that other channels or carriers, such as other service, control and feedback channels, may be used in addition to the channels or carriers shown.

[0079] The physical channels described above are typically multiplexed and mapped to transport channels for processing at the Media Access Control (MAC) layer. The transport channels carry blocks of information called transport blocks (TBs). The transport block size (TBS) (which can correspond to the number of bits of information) can be a controlled parameter based on the modulation and coding scheme (MCS) and the number of redundancies (RBs) in a given transmission.

[0080] Figure 5 An example application of timing advance offset at the first UE (UE1) and the second UE (UE2) is shown. Timing advance offset (also known as timing advance (TA)) can be applied at the UE to ensure that downlink subframes and uplink subframes are synchronized at the base station (BS). Figure 5In the example, UE1 can be located far from the BS, while UE2 can be located near the BS. UE1 may experience a first propagation delay δ1 504 on the downlink, while UE2 may experience a second propagation delay δ2 510 on the downlink. Since UE1 is located far from the BS compared to UE2, it can be assumed that δ1 > δ2. Therefore, when the BS transmits subframe #n (e.g., subframe #n 502-1) at time t1 500, UE1 can receive subframe #n (e.g., subframe #n 502-2) at time t1+δ1. UE2 can receive subframe #n (e.g., subframe #n 502-3) at time t1+δ2. Both UE1 and UE2 use the arrival of downlink subframes (along with timing advance) as a reference for calculating uplink subframe timing.

[0081] Assuming the same propagation delay applies to both the downlink and uplink directions, then the timing advance is equal to twice the propagation delay. Therefore, UE1 might need to start its uplink at t2+2δ1 (where t2 is the downlink reception time for UE1) (e.g., uplink subframe 508-1), while UE2 might need to start its uplink at t3+2δ2 (where t3 is the downlink reception time for UE2) (e.g., uplink subframe 514-1) to ensure that both uplink transmissions (from UE1 and UE2) arrive at the BS simultaneously (e.g., uplink subframes 508-2 and 514-2). This means that the uplink and downlink subframes are time-aligned.

[0082] If timing advance is not applied, the start of an uplink transmission from UE2 in subframe #n+1 may overlap with the end of an uplink transmission from UE1 in subframe #n. Assuming the same resource block is assigned to UE1 in subframe #n and to UE2 in subframe #n+1, this overlap can cause interference, leading to reception failure at the BS. Applying an appropriate timing advance value can avoid these subframe conflicts.

[0083] Figure 6 This is a schematic diagram illustrating example 600 of full-duplex (FD) communication. Figure 6 Example 600 includes a UE 602 and transmit / receive points (e.g., TRPs) 604, 606, wherein the UE 600 is transmitting a UL transmission (e.g., UL transmission 608) to TRP-1 604 and receiving a DL transmission (e.g., DL transmission 610) from TRP-2 606. Figure 6 In Example 600, FD is enabled for UE 600, but not for TRP 604 and 606.

[0084] This disclosure relates to improving the way flexible TDD operates to allow FD communication and simultaneous UL / DL transmission (e.g., in frequency range 2 (FR2)). Flexible TDD capability can be present at the base station or the UE, or both. For example, for the UE, UL transmission can originate from one antenna panel, while DL reception can be in another. FD communication can be conditional on beam separation of the UL and DL beams at the respective antenna panels. Therefore, it is desirable to improve the way the UL and DL beams are selected for FD communication. Utilizing FD communication can provide latency reduction, making it possible to receive DL signals in UL-only time slots, which can achieve latency savings. Furthermore, FD communication can enhance spectral efficiency per cell or per UE and can allow for more efficient use of resources.

[0085] This disclosure also relates to improving the timing alignment of DL and UL signals at the UE when operating in full-duplex mode, and improving the timing alignment of DL and UL signals for full-duplex transmission at both the UE and the base station (e.g., TRP).

[0086] Figure 7 The procedure for determining the reception timing difference between the reception time of the DL signal at the UE's receive (Rx) beam and the reception time of the UL signal at the UE's receive (Rx) beam, wherein the UL signal is transmitted from the UE's transmit (Tx) beam, is illustrated. Figure 7 As shown, UE 602 can send a Physical Random Access Channel (PRACH) message 718 from the first beam 708 to TRP-1 604. UE 602 can then receive a Random Access Response (RAR) message 720 from TRP-1 604 at the first beam 708. In some examples, the RAR message 720 may include a Timing Advance (TA) command. The TA command may include a timing advance to be applied by UE 602 to uplink transmissions. TRP-1 604 can then schedule a Layer 1 Signal-to-Interference-plus-Noise Ratio (L1-SINR) measurement for UE 602 via a configuration information message 721, where the L1-SINR measurement includes self-interference measurement (SIM) for UE 602, as well as DL and UL receive timing measurements. In some examples, as explained in detail herein, resources used for self-interference measurement (SIM) can be used for receive timing measurements, which can reduce signaling overhead.

[0087] In some aspects of this disclosure, UE 602 can perform L1-SINR measurements by performing one or more DL / Rx and UL / Tx beam scanning operations. L1-SINR measurements include self-interference measurements (SIM) and DL and UL receive timing measurements. For example, as... Figure 7As shown, UE 602 may have multiple transmit (Tx) beams (e.g., Tx beams 710, 712) and multiple receive (Rx) beams (e.g., Rx beams 714, 716). UE 602 can perform a first beam scan operation by transmitting a UL signal (e.g., a sounding reference signal (SRS)) from Tx beam 710 and determining both the reception timing of the UL signal at each of Rx beams 714 and 716 and self-interference caused by the UL signal. UE 602 can perform a second beam scan operation by transmitting a UL signal (e.g., a sounding reference signal (SRS)) from Tx beam 712 and determining both the reception timing of the UL signal at each of Rx beams 714 and 716 and self-interference caused by the UL signal. In some examples, UE 602 can transmit each UL signal during the beam scan operation by applying a timing advance received in RAR message 720.

[0088] In some aspects of this disclosure, UE 602 can determine the reception timing of DL signals from TRP-2 606 for each Rx beam. For example, UE 602 can determine the reception timing of DL signal 726 received at Rx beam 714, and can determine the reception timing of DL signal 728 received at Rx beam 716. For example, DL signals 726 and 728 may be CSI-RS signals.

[0089] exist Figure 7 In the example, two Tx beams 710 and 712 and two Rx beams 714 and 716 can form four beam pairs for FD communication at the UE. For example, Tx beam 710 and Rx beam 714 can form a first beam pair, Tx beam 710 and Rx beam 716 can form a second beam pair, Tx beam 712 and Rx beam 714 can form a third beam pair, and Tx beam 712 and Rx beam 716 can form a fourth beam pair.

[0090] Aspects related to layer 1 SINR measurement using measurement gaps configured with a network

[0091] Figure 8 This is a schematic diagram 800 illustrating the beam measurement process according to various aspects of this disclosure. Figure 8The schematic diagram 800 includes a base station (BS) 802 and a UE, the UE including multiple UE panels (e.g., UE panel-1 804, UE panel-2 806, UE panel-3 808). The BS 802 and UE can be configured to select a CSI-RS beam based on a beam measurement procedure (e.g., 810). The beam measurement procedure 810 allows the UE panels (e.g., 804, 806, 808) to measure the CSI-RS signal from the BS 802 to determine which Rx beam is optimal on the UE side. The determination of the optimal Rx beam can be based on the DL signal strength measured at the UE panel. Each Rx beam can be associated with a Tx CSI-RS beam at the BS 802. The beam measurement procedure 810 allows the BS 802 to send multiple CSI-RS resources to the UE panels to measure DL channel quality or signal strength on the UE side. The UE can send a CSI-RS report to BS 802, which indicates the foremost Tx beam at BS 802 and each associated foremost Rx beam on the UE side. Based on channel reciprocity, it can be assumed that the foremost Rx beam is the foremost Tx beam at the UE panel. In some aspects, the UE can report the foremost four Tx beams. However, in other aspects, the UE can report more or fewer than the foremost four Tx beams. After determining the foremost four Tx beams and their associated foremost Rx beams at the UE, the UE can perform self-interference measurement (SIM). The UE can also report the foremost four beams and the UE's associated panel ID, allowing the gNB to avoid configuring in-panel SIM to save resource overhead.

[0092] To perform SIM, the UE can transmit a transmission from beam 820 from UE panel-1 804 using repetitions (e.g., three times), allowing beams 822, 824, and 826 to measure the amount of energy they receive from the transmission from beam 820. The transmission from beam 820 may be an uplink transmission to BS 802; however, during the uplink transmission from beam 820 to BS 802, some energy may be received at beams on other panels. Such energy may be due to sidelobes or based on the configuration of other panels. Thus, beams 822, 824, and 826 can measure the amount of self-interference caused by the transmission from beam 820. This process is repeated for all the first four beams indicated in the CSI-RS report. For example, beam 822 can use repetitions (e.g., three times) to transmit a transmission, allowing beams 820, 824, and 826 to measure the amount of self-interference caused by the transmission from beam 822. After completing the self-interference procedure and channel measurement procedure, Instruction 836 can be sent to BS 802. Instruction 836 indicates the UE's leading DL and UL beam pairs in the L1-SINR report via the actual or maximum SINR value plus a differential value. The DL and UL beam pairs selected as leading beam pairs are those that have exceeded the threshold used for selection. In some aspects, the UE can report that no beams have exceeded the threshold, thus indicating that no viable beams and / or beam pairs exist.

[0093] To perform self-interference, a modified Layer 1 Signal-to-Interference-plus-Noise Ratio (L1-SINR) configuration and procedure can be utilized. L1-SINR can include two resource settings. A first resource setting, provided by the higher-layer parameter "resourcesForChannelMeasurement", is configured to perform channel measurement (CM) via CSI-RS. CM measures channel quality. A second resource, provided by either the higher-layer parameter "csi-IM-ResourcesForInterference" or "nzp-CSI-RS-ResourcesForInterference", is configured to perform interference measurement (IM) via CSI-RS. The modified L1-SINR can be configured to perform the interference measurement (IM) procedure using SRS instead of CSI-RS (e.g., for measuring self-interference at the UE). Each CSI-RS resource used as a channel measurement resource (CMR) can be associated with one SRS resource used as an interference measurement resource (IMR). The number of CSI-RS resources used for CM can be equal to the number of SRS resources used for interference measurement (IM). CMR can also be reused for the original L1-SINR beam management purpose. Furthermore, IMR can also be reused simultaneously for cross-link interference (CLI) measurement purposes to measure cross-link interference at adjacent UEs using the same SRS resources used for SIM. In some aspects, the IMR configuration can be configured to define full or reduced Tx power. For example, the reduced Tx power can be based on X dBm or X% of the full Tx power. The UE can use this configuration to amplify the calculated SINR accordingly.

[0094] Return to reference Figure 8 Diagram 800 provides an example of CM and IM using a modified L1-SINR configuration and procedure. The CM section includes four CMRs 812, 814, 816, and 818, such that BS 802 is configured to send CSI-RS to each of the first four Rx beams of the UE. For example, CMR 812 can be sent to Rx beam 820 of UE panel-1 804, CMR 814 can be sent to Rx beam 822 of UE panel-2 806, CMR 816 can be sent to Rx beam 824 of UE panel-3 808, and CMR 818 can be sent to Rx beam 826 of UE panel-3 808. The UE can measure the channel quality received at the UE through the corresponding Rx beam. The UE can store the channel quality measurement under the CMR to determine the SINR.

[0095] The IM portion includes the same or more resources as the CM portion, enabling CMRs to be mapped to corresponding IMRs. For example, each CMR is associated with an IMR used for interference measurement. Each CMR can also be mapped to multiple IMRs used to measure interference to the same Rx beam as the CMR, but transmitted from different beams on different panels of the UE. The IM portion includes four IMRs 828, 830, 832, and 834, and is mapped to corresponding CMRs. For example, CMR 812 can be mapped to IMR 828, CMR 814 can be mapped to IMR 830, CMR 816 can be mapped to IMR 832, and CMR 818 can be mapped to IMR 834. The IM portion allows SIM to be performed. To perform SIM, the IMR configures the UE with SRS resources. Each of these beams (e.g., 820, 822, 824, 826) can be configured to transmit SRS when transmitting uplink transmissions for SIM. The transmitted SRS can be used to measure the SIM. In some aspects, the UE panel-1 804 can transmit the SRS at beam 820, allowing beams 822, 824, and 826 to measure the self-interference caused by the transmission from beam 820. This process is repeated for all other beams 822, 824, and 826. For example, beam 822 can transmit a transmission, allowing beams 820, 824, and 826 to measure the self-interference caused by the transmission from beam 822. After completing the CM and SIM, the SINR can be determined.

[0096] The mapping between CMR and IMR allows for the calculation of SINR based on the results of the CM and IM components. SINR can be determined based on the ratio of CMR to the corresponding IMR, such as in... Figure 8 As shown in the table.

[0097] Figure 8 The aspect provides examples of CM and IM resources as TDM, allowing the CM and IM portions to occur at different times. In some aspects, DL timing can be used for CM, while UL timing can be used for IM. In such cases, SINR can be calculated based on the ratio of CM to IM and noise (e.g., CM / (IM+noise)). After calculating SINR, the UE can report the SINR result to BS 802. The SINR result may include a report of the DL and UL beam pairs with the highest SINR.

[0098] In the aspects described herein, the modified Layer 1 signal-to-interference-plus-noise ratio (L1-SINR) configuration may include a corresponding measurement gap between each of the self-interference measurements. In some aspects, the modified L1-SINR configuration information may also indicate an initial measurement gap between a channel measurement and a self-interference measurement. For example, as Figure 8 As shown, BS 802 can be configured with an initial measurement gap 838 between the last CSI-RS transmission of CMR 818 and the first SRS transmission of IMR 828 (e.g., from beam 822). In this example, BS 802 can also be configured with measurement gaps 840, 842 between each corresponding SRS transmission of IMR 828 (e.g., from beams 824, 826).

[0099] When performing a SIM, each measurement gap allows the UE to measure the reception time of uplink transmissions (e.g., SRS) at the UE's receive (Rx) beam. For example, measurement gap 838 allows the UE to measure the reception time of uplink transmissions from transmit (Tx) beam 822 (at Rx beam 820), measurement gap 840 allows the UE to measure the reception time of uplink transmissions from transmit (Tx) beam 824 (at Rx beam 820), and measurement gap 842 allows the UE to measure the reception time of uplink transmissions from transmit (Tx) beam 826 (at Rx beam 820). In some aspects of this disclosure, each measurement gap can also be used as a beam switching period.

[0100] In some aspects of this disclosure, the BS 802 can be configured with the duration of each measurement interval. In some examples, and as... Figure 8 As shown, each measurement gap can be configured to have a duration of one Orthogonal Frequency Division Multiplexing (OFDM) symbol. For example, measurement gap 838 can be configured for symbol n+1, measurement gap 840 can be configured for symbol n+3, and measurement gap 842 can be configured for symbol n+5. In other examples, each measurement gap can be configured to have a duration of multiple OFDM symbols. In some aspects of this disclosure, BS 802 can configure two or more measurement gaps to have different durations. For example, BS 802 can indicate the duration of the measurement gaps (e.g., measurement gaps 838, 840, 842) via Radio Resource Control (RRC) messages, Medium Access Control (MAC) control elements (MAC-CE), or in downlink control information (DCI). Although Figure 8 The examples depict measurement gaps 838, 840, and 842 for the IMR 828, but it should be understood that measurement gaps can also be configured for the remaining IMRs 830, 832, and 834 (not shown for ease of illustration).

[0101] In some aspects of this disclosure, the UE can use the reception time of uplink transmissions (e.g., SRS from the UE's transmit (Tx) beam when performing SIM) measured at the UE's receive (Rx) beam to determine the reception timing difference at the UE for a given Tx / Rx beam pair between the DL and UL signals. For example, referring to... Figure 9 In the example beam scanning operation for SIM shown, UE 602 can select a receive (Rx) beam 912 and first and second transmit (Tx) beams 908, 910. UE 602 can receive a DL signal 918 from TRP-2 606 at the Rx beam 912 and can determine the reception time of the DL signal 918. Then, UE 602 can transmit a first UL signal 914 via the first Tx beam 908. Figure 9 As shown, at least some energy of the first UL signal 914 (e.g., shown as dashed line 922) may be guided back to the Rx beam 912 via the first reflector 920. Therefore, Figure 9 The dashed line 922 in the diagram can represent a self-interference signal transmitted from the UL signal 914. The UE 602 can measure the reception time of the first UL signal 914 (e.g., self-interference signal 922) received at the Rx beam 912.

[0102] As in Figure 9 As further shown, UE 602 can transmit the second UL signal 916 via the second Tx beam 910. For example... Figure 9 As shown, at least some energy of the second UL signal 916 (e.g., shown as dashed line 926) may be guided back to the Rx beam 912 via the second reflector 924. Therefore, Figure 9 The dashed line 926 in the diagram can represent a self-interference signal transmitted from UL signal 916. UE 602 can measure the reception time of the second UL signal 916 (e.g., self-interference signal 926) received at Rx beam 912. In some examples, UE 602 can transmit UL signals 914, 916 by applying timing advance received from TRP-1 604.

[0103] Figure 10 A schematic diagram 1000 illustrates example timing of the DL and UL signals between UE 602 and TRP-1 604, and a schematic diagram 1050 illustrates example timing of the DL and UL signals between UE 602 and TRP-2 606. (Reference) Figure 6 and Figure 10In the schematic diagram 1000, TRP-1 604 can transmit DL signal 1002-1 in symbol #n at the first reference time (tRef_1) 1012. UE 602 can receive the DL signal at the receive (Rx) beam at time t3 1006. Figure 10 The time interval between time tRef_1 1012 and time t3 1006 is shown as duration b1 1008. Duration b1 1008 can be considered as the propagation delay between TRP-1 604 and UE 602.

[0104] As in Figure 10 As further shown, UE 602 can transmit UL signal 1004-1 (with timing advance (TA) received from TRP-1 604) in the transmit (Tx) beam at time t1 in symbol #n. The period between time t1 1010 and tRef_1 1012 is shown as duration a1 1014. Figure 10 In the example, duration a1 1014 can be approximated as duration b1 1008, such that the timing advance applied to the transmission of UL signal 1004-1 is the sum of a1 1014 and b1 1008 (e.g., TATRP-1 = a1 + b1). TRP-1 604 can receive the UL signal at time tRef_1 1012 (in Figure 10 (This is shown as UL signal 1004-2). Figure 10 In the example, the Rx beam can also receive the UL signal at time t2 1016 (in Figure 10 (This is shown as UL signal 1004-3). UL signal 1004-3 can be considered a self-interference signal. The time interval between time t2 1016 and tRef_11012 is shown as duration c1 1018.

[0105] refer to Figure 6 and Figure 10 In the schematic diagram 1050, TRP-2 606 can transmit DL signal 1052-1 at symbol #n at the second reference time (tRef_2) 1012. UE 602 can receive the DL signal at the receive (Rx) beam at time t6 1056. Figure 10 The time interval between time tRef_2 1062 and time t6 1056 is shown as duration b2 1058. Duration b1 1058 can be considered as the propagation delay between TRP-2 606 and UE 602.

[0106] As in Figure 10As further shown, UE 602 can transmit UL signal 1054-1 (with timing advance) in the transmit (Tx) beam at time t4 in symbol #n. The period between time t4 1060 and tRef_2 1062 is shown as duration a2 1064. Figure 10 In the example, duration a2 1064 can be approximated as duration b2 1058, such that the timing advance applied to the transmission of UL signal 1054-1 is the sum of a2 1064 and b2 1058 (e.g., TATRP-2 = a2 + b2). TRP-2 606 can receive the UL signal at time tRef_2 1062 (in Figure 10 (This is shown as UL signal 1054-2). Figure 10 In the example, the Rx beam can also receive the UL signal at time t5 1066 (in Figure 10 (This is shown as UL signal 1054-3). UL signal 1054-3 can be considered a self-interference signal. The time interval between time t5 1066 and tRef_2 1062 is shown as duration c2 1068.

[0107] Therefore, if a Tx beam is used to transmit a UL signal to TRP-1 604, and an Rx beam is used to receive a DL signal from TRP-2 606 in full-duplex mode, the timing difference between the DL and UL signals for the Tx / Rx beam pair can be expressed as the sum of durations c1 1018 and b2 1058. That is, the timing difference between the DL and UL signals for the Tx / Rx beam pair can be defined as the difference between the reception time of the DL signal 1052-2 received at the Rx beam (e.g., t6 1056) and the reception time of the UL signal 1004-3 received at the Rx beam (e.g., t2 1016). In some examples, from the perspective of the respective TRPs 604, 606, tRef_1 1012 and tRef_2 1062 can each represent a time zero point.

[0108] In some aspects of this disclosure, if the timing difference between the received DL signal and the UL signal at the UE is below a threshold, the UE 602 can select a Tx / Rx beam pair for full-duplex communication at the UE. In some examples, the threshold can be set to the cyclic prefix duration.

[0109] In the case of timing alignment for UL and DL signals, structured DL and UL transmissions can avoid signal leakage to subbands, partially overlapping FDM full-duplex bands, and quadrature UL and DL demodulation reference signals (DMRS). Furthermore, for UEs transmitting different reference signals (e.g., CSI-RS and SRS) using FDM, the previously described timing alignment of UL and DL signals can avoid signal leakage to other frequency bands.

[0110] Figure 11 An example procedure 1100 is shown for measuring different receive timing differences for different Tx / Rx beam pairs at a UE (e.g., UE 602). In one example scenario, reference is made to... Figure 9 UE 602 can selectively receive (Rx) beam 912 for receiving DL signals from TRP-2 606 in full-duplex mode. UE 602 can then use these Tx beams to perform beam scanning operations by transmitting UL signals (e.g., SRS) from one or more Tx beams (e.g., Tx beams 908, 910) at specified times (such as the measurement gap described herein).

[0111] like Figure 11 As shown, TRP-1 604 and / or TRP-2 606 can be configured with corresponding measurement gaps between UL transmissions (e.g., SRS transmissions) for the SIM, such as gap symbols #n-1 and #n+1. Therefore, refer to... Figure 9 and 11 UE602 can transmit a first UL signal 914 from the first Tx beam 908 within symbol #n (e.g., UL symbol #n 1102-1) during a measurement gap. The measurement gap can be during... Figure 11 The gap symbol #n-1 is shown in the diagram. Figure 11 In this context, it should be noted that UE 602 transmits the first UL signal 914 at a time t1 1104 with a timing advance of 1110, denoted as a1+b2. For example, a1 could be at... Figure 10 The duration shown is a1 = 1014, and b2 can be in Figure 10 The duration b2 1058 shown. For example, timing advance 1110 may include duration b2 1058 to achieve alignment with a reference time established for the DL Rx beam 912 (e.g., the time t6 1056 when the DL signal is received from TRP-2 606 via the Rx beam 912 at UE 602).

[0112] exist Figure 11In the example, UE 602 can measure the reception time (e.g., t2 1108) of the first UL signal 914 (e.g., self-interference signal 922) received at Rx beam 912. UE 602 can determine the time interval between time t2 1108 and tRef_1 1106, which is denoted as duration 1112 (e.g., c1_1+b2). ​​Duration 1112 can represent the timing difference between the reception of the UL signal from the first Tx beam 908 and the DL signal at Rx beam 912. In some aspects, the gap symbol #n-1 allows UE 602 to measure time t2 1108 at Rx beam 912 more accurately because no DL signal can interfere with the UL signal transmitted during gap symbol #n-1.

[0113] As in Figure 11 As further shown, UE 602 can transmit a second UL signal 916 from the second Tx beam 910 within symbol #n+2 (e.g., UL symbol #n+2 1114-1) during the measurement gap. The measurement gap can be during Figure 11 The gap symbol #n+1 is shown in the diagram. Figure 11 It should be noted that UE 602 sends the second UL signal 916 at a time t3 1116 with a timing advance of 1122 (which may be the same as timing advance 1110) denoted as a1+b2.

[0114] exist Figure 11 In the example, UE 602 can measure the reception time (e.g., t4 1120) of the second UL signal 916 (e.g., self-interference signal 926) received at Rx beam 912. UE 602 can determine the time interval between time t4 1120 and tRef_2 1118, which is shown as duration 1124 (e.g., c1_2+b2). ​​Duration 1124 can represent the reception timing difference between the UL signal from the second Tx beam 910 and the DL signal at Rx beam 912. In some aspects, the gap symbol #n+1 allows UE 602 to measure time t4 1120 at Rx beam 912 more accurately because no DL signal can interfere with the UL signal transmitted during gap symbol #n+1.

[0115] Reference Figure 9 and 11In the described example scenario, duration 1112 (e.g., c1_1 + b2) can be less than duration 1124 (e.g., c1_2 + b2). This is because the first reflector 920 is located further away from the UE 602 than the second reflector 924, resulting in a larger propagation delay in the transmission of the UL signal to the Rx beam 912. Therefore, duration c1_1 caused by the more distant reflector (e.g., the first reflector 920) can be greater than duration c1_2 caused by the closer reflector (e.g., the second reflector 924). Thus, in some examples, since the reception timing difference between Tx / Rx beams 908 and 912 (e.g., c1_1 + b2 1112) can be smaller than the reception timing difference between Tx / Rx beams 910 and 912 (e.g., c1_2 + b2 1124), Tx / Rx beams 908 and 912 may experience less self-interference and can provide better performance during full-duplex communication.

[0116] In some aspects of this disclosure, UE 602 can compare the corresponding receive timing difference for a Tx / Rx beam pair (e.g., Tx / Rx beams 908, 912, Tx / Rx beams 910, 912) with a threshold value, and can identify Tx / Rx beam pairs with receive timing differences below the threshold value. In some examples, the threshold value may be the cyclic prefix duration.

[0117] In some aspects of this disclosure, UE 602 can estimate the reception timing difference at the UE relative to the uplink base station and the downlink base station for the Tx / Rx beam pair based on the expression Trx_dl_i_m–Trx_ul_j_n, and can estimate whether Trx_dl_i_m–Trx_ul_j_n is less than a threshold (e.g., cyclic prefix duration). For example, the term Trx_dl_i_m can represent the reception time of a DL signal transmitted from a downlink base station (e.g., a downlink transmission point) with index i via a beam m on that downlink base station (e.g., at UE 602), and the term Trx_ul_j_n can represent the reception time of a UL signal transmitted from an uplink base station (e.g., an uplink transmission point) with index j via a beam n on that uplink base station (e.g., at UE 602).

[0118] Figure 12 This is a block diagram illustrating an example of a hardware implementation for a user equipment (UE) 1200 employing a processing system 1214. For example, UE 1200 may correspond to the above reference. Figure 1-11 Any UE shown and described.

[0119] UE 1200 can be implemented using a processing system 1214 including one or more processors 1204. Examples of processors 1204 include microprocessors, microcontrollers, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic units, discrete hardware circuitry, and other suitable hardware configured to perform the various functions described throughout this disclosure. In various examples, UE 1200 can be configured to perform any one or more of the functions described herein. That is, the processor 1204 utilized in UE 1200 can be used to implement the functions described below and Figure 14 Any one or more of the processes and procedures shown in the document.

[0120] In this example, processing system 1214 can be implemented using a bus architecture (typically represented by bus 1202). Depending on the specific application and overall design constraints of processing system 1214, bus 1202 may include any number of interconnect buses and bridges. Bus 1202 links together various circuits including one or more processors (typically represented by processor 1204), memory 1205, and computer-readable media (typically represented by computer-readable media 1206). Bus 1202 may also connect various other circuits such as timing sources, peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further.

[0121] Bus interface 1208 provides an interface between bus 1202 and transceiver 1210. Transceiver 1210 provides a unit 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 1212 (e.g., keypad, display, touchscreen, speaker, microphone, control knob, etc.) may also be provided. Of course, such a user interface 1212 is optional and may be omitted in some examples.

[0122] Processor 1204 is responsible for managing bus 1202 and general processing, including executing software stored on computer-readable medium 1206. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, software should be broadly interpreted 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. When executed by processor 1204, the software causes processing system 1214 to perform the various functions described below for any particular device. Computer-readable medium 1206 and memory 1205 may also be used to store data manipulated by processor 1204 during software execution.

[0123] Computer-readable medium 1206 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., compressed optical disks (CDs) or digital versatile optical disks (DVDs)), smart cards, flash memory devices (e.g., card, stick, 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. Computer-readable medium 1206 may be located within processing system 1214, outside of processing system 1214, or distributed among multiple entities including processing system 1214. Computer-readable medium 1206 may be embodied in a computer program product. For example, a computer program product may include a computer-readable medium having encapsulation material. In some examples, computer-readable medium 1206 may be part of memory 1205. Those skilled in the art will recognize how to best implement the functions described herein, depending on the specific application and the overall design constraints imposed on the system as a whole.

[0124] In some aspects of this disclosure, processor 1204 may include circuitry configured for various functions. For example, processor 1204 may include configuration information receiving circuitry 1240 configured to receive from a base station configuration information for performing beam pair selection measurements at the UE with respect to a subset of candidate beams (e.g., beams 820, 822, 824, 826 and / or beams 908, 910, 912). In some aspects, the subset of candidate beams may be the leading candidate beams for scanning the SRS. For example, the UE may determine the leading candidate beams by performing a channel measurement procedure on the candidate beams.

[0125] Beam pair selection measurements may include, at a minimum, self-interference measurements between one or more transmit (Tx) beams and one or more receive (Rx) beams in a candidate beam subset at the UE. Configuration information indicates the measurement intervals between self-interference measurements.

[0126] The processor 1204 may also include beampuppet selection measurement execution circuitry 1242, which is configured to perform beampuppet selection measurements based on configuration information.

[0127] The processor 1204 may also include a beampup selection circuit 1244 configured to select at least one Tx / Rx beampup from a subset of candidate beampup selections based on the beampup selection measurements performed.

[0128] The processor 1204 may also include a report transmission circuit 1246 configured to transmit a report to the base station including at least one selected Tx / Rx beam pair.

[0129] In one or more examples, computer-readable storage medium 1206 may include configuration information receiving software 1250 configured to receive configuration information from a base station for performing beam pair selection measurements at the UE with respect to a subset of candidate beams. The beam pair selection measurements may include at least self-interference measurements at the UE between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams. The configuration information indicates measurement intervals between self-interference measurements. For example, the configuration information receiving software 1250 may be configured to implement the following description... Figure 14 (For example, including one or more of the functions described in box 1402).

[0130] In one or more examples, the computer-readable storage medium 1206 may also include beampuppet selection measurement execution software 1252, which is configured to perform beampuppet selection measurements based on configuration information. For example, the beampuppet selection measurement execution software 1252 may be configured to implement the following description... Figure 14 (For example, including one or more of the functions described in box 1404).

[0131] In one or more examples, the computer-readable storage medium 1206 may also include beam pair selection software 1254 configured to select at least one Tx / Rx beam pair from a subset of candidate beams based on the performed beam pair selection measurements. For example, the beam pair selection software 1254 may be configured to implement the following description... Figure 14 (For example, including one or more of the functions described in box 1406).

[0132] In one or more examples, the computer-readable storage medium 1206 may also include report transmission software 1256 configured to transmit a report to the base station including at least one selected Tx / Rx beam pair. For example, the report transmission software 1256 may be configured to implement the following description... Figure 14 (For example, including one or more of the functions described in box 1408).

[0133] Figure 13 This is a conceptual diagram illustrating an example hardware implementation of an exemplary base station 1300 employing a processing system 1314. For example, base station 1300 could be as follows: Figure 6-9 The TRP-1 604, TRP-2 606, or base station 802 shown are examples.

[0134] According to various aspects of this disclosure, an element, any part of an element, or any combination of elements can be implemented using a processing system 1314 including one or more processors 1304. That is, the processor 1304, as utilized in base station 1300, can be used to implement any one or more processes described below. Figure 12 The processing system 1214 shown is substantially the same, including a bus interface 1308, a bus 1302, a memory 1305, a processor 1304, a computer-readable medium 1306, and a transceiver 1310.

[0135] In some aspects of this disclosure, processor 1304 may include circuitry configured for various functions. For example, processor 1304 may include configuration information transmission circuitry 1340 configured to transmit configuration information to a user equipment (UE) for beam pair selection measurements at the UE regarding a subset of candidate beams. The beam pair selection measurements may include at least self-interference measurements at the UE between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams. The configuration information indicates measurement gaps between self-interference measurements.

[0136] The processor 1304 may also include a report receiving circuit 1342 configured to receive from the UE a report including at least one Tx / Rx beam pair selected by the UE based on beam pair selection measurements.

[0137] In one or more examples, computer-readable storage medium 1306 may include configuration information transmitting software 1350 configured to transmit configuration information to a user equipment (UE) for beam pair selection measurements at the UE regarding a subset of candidate beams. The beam pair selection measurements may include at least self-interference measurements at the UE between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams. The configuration information indicates measurement gaps between self-interference measurements. For example, configuration information transmitting software 1350 may be configured to implement the following... Figure 15 (For example, including one or more of the functions described in box 1502).

[0138] In one or more examples, the computer-readable storage medium 1306 may also include report receiving software 1352 configured to receive from the UE a report including at least one Tx / Rx beam pair selected by the UE based on beam pair selection measurements. For example, the report receiving software 1352 may be configured to implement the following description... Figure 15 (For example, including one or more of the functions described in box 1504).

[0139] Figure 14This is a flowchart 1400 of a method for wireless communication at a UE according to some aspects of this disclosure. As described below, in certain implementations within the scope of this disclosure, some or all of the shown features may be omitted, and some shown features may be unnecessary for all implementations of the aspects. In some examples, process 1400 may be performed by... Figure 6 , 7 The process 1400 is performed by UE 602 shown in Figure 9. In some examples, the process 1400 may be performed by any suitable means or unit for performing the functions or algorithms described below.

[0140] At box 1402, the UE receives configuration information from the base station for performing beam pair selection measurements at the UE regarding a subset of candidate beams (e.g., configuration information message 721). The beam pair selection measurements may include at least self-interference measurements at the UE between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams (e.g., from...). Figure 8 The SRS transmission from Tx beams 822, 824, and 826 to Rx beam 820 is shown. Configuration information indicates the measurement gaps between self-interference measurements (e.g., measurement gaps 840 and 842). For example, the above combined... Figure 12 The configuration information receiving circuit 1240 shown and described, together with the transceiver 1210, can receive configuration information from the base station for performing beam pair selection measurements at the UE regarding a subset of candidate beams.

[0141] At box 1404, the UE performs beam pair selection measurements based on configuration information. For example, beam pair selection measurements may include reference... Figure 9 The beam scanning operation for SIM is described. In some aspects of this disclosure, the UE performs beam pair selection measurements by determining a corresponding receive timing difference between the downlink (DL) signal and the uplink (UL) signal for each of one or more Tx / Rx beam pairs from a subset of candidate beams. An example of the receive timing difference could be the previously described... Figure 10 The sum of durations c1 1018 and b2 1058. For example, the above combined Figure 12 The beampup selection measurement execution circuit 1242 shown and described, together with the transceiver 1210, can perform beampup selection measurements based on configuration information.

[0142] At block 1406, the UE selects at least one Tx / Rx beam pair from a subset of candidate beam pairs based on the performed beam pair selection measurement. In some aspects of this disclosure, the UE selects at least one Tx / Rx beam pair by comparing the corresponding reception timing difference between the DL signal and the UL signal for each of the one or more Tx / Rx beam pairs with a threshold value; and identifying one of the one or more Tx / Rx beam pairs for which the corresponding reception timing difference between the DL signal and the UL signal is lower than the threshold value. In some examples, the UE may be configured to set the threshold value to the cyclic prefix duration.

[0143] In some aspects, the UE determines a corresponding receive timing difference for each of one or more Tx / Rx beam pairs by: determining a first receive time for downlink transmission at the receive (Rx) beam in one of the one or more Tx / Rx beam pairs; transmitting uplink transmission from the transmit (Tx) beam in that one of the one or more Tx / Rx beam pairs; determining a second receive time for uplink transmission at the receive (Rx) beam in that one of the one or more Tx / Rx beam pairs; and determining the duration between the first receive time and the second receive time. In some examples, the uplink transmission includes a sounding reference signal (SRS). For example, the uplink transmission may be transmitted based on a timing advance received from the base station. In some aspects, the second receive time for uplink transmission is determined during a measurement gap within a measurement gap. In some aspects, the second receive time for uplink transmission is determined during a measurement gap within a measurement gap.

[0144] In some aspects of this disclosure, the UE selects at least one Tx / Rx beam pair by identifying one of one or more Tx / Rx beam pairs based on at least one constraint applied to the corresponding reception timing difference between the DL signal and the UL signal. For example, in conjunction with the above Figure 12 The beam pair selection circuit 1244 shown and described can select at least one Tx / Rx beam pair from a subset of candidate beam pairs based on the beam pair selection measurements performed.

[0145] In some aspects of this disclosure, the configuration information also indicates the duration of one or more measurement gaps in a measurement gap, wherein each self-interference measurement in the self-interference measurement is performed via a sounding reference signal (SRS) transmission. In some examples, the duration may be indicated as one or more orthogonal frequency division multiplexing (OFDM) symbols. In some aspects, the duration is indicated to the UE in a Radio Resource Control (RRC) message, a Medium Access Control (MAC) control element (MAC-CE), or in a Downlink Control Information (DCI). In some aspects, the configuration information also indicates an initial measurement gap between a self-interference measurement and a channel measurement.

[0146] At box 1408, the UE sends a report to the base station including at least one selected Tx / Rx beam pair. For example, in conjunction with the above... Figure 12 The report transmission circuit 1246 shown and described, together with the transceiver 1210, can transmit a report to the base station including at least one selected Tx / Rx beam pair.

[0147] Figure 15 This is a flowchart 1500 of a method for wireless communication at a base station, according to some aspects of this disclosure. As described below, in certain implementations within the scope of this disclosure, some or all of the shown features may be omitted, and some shown features may be unnecessary for all implementations of the aspects. In some examples, process 1500 may be performed by... Figure 6-9 The process 1500 may be performed by TRP-1604, TRP-2606, or base station 802 as shown. In some examples, process 1500 may be performed by any suitable means or unit for performing the functions or algorithms described below.

[0148] In box 1502, the BS sends configuration information to the User Equipment (UE) for beam pair selection measurements at the UE regarding a subset of candidate beams. The beam pair selection measurements may include, at least, self-interference measurements between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams at the UE. The configuration information indicates the measurement intervals between self-interference measurements. For example, in conjunction with the above... Figure 13 The configuration information transmission circuit 1340 shown and described, together with the transceiver 1310, can transmit configuration information to the user equipment (UE) for beam pair selection measurement at the UE regarding a subset of candidate beams at the UE.

[0149] In some aspects, each measurement gap enables the UE to determine a corresponding reception timing difference between the downlink (DL) signal and the uplink (UL) signal for each Tx / Rx beam pair from one or more Tx / Rx beam pairs in the candidate beam subset. The BS avoids scheduling downlink transmissions for the UE during the measurement gap. In some aspects, at least one measurement gap enables the UE to perform beam switching operations. In some aspects, the configuration information also indicates the duration of one or more measurement gaps. In some examples, the duration is indicated as one or more Orthogonal Frequency Division Multiplexing (OFDM) symbols. In some aspects, the BS indicates the duration to the UE in a Radio Resource Control (RRC) message, a Medium Access Control (MAC) control element (MAC-CE), or in a Downlink Control Information (DCI).

[0150] At box 1504, the BS receives from the UE a report including at least one Tx / Rx beam pair selected by the UE based on beam pair selection measurements. For example, in conjunction with the above... Figure 13 The report receiving circuit 1342 shown and described, together with the transceiver 1310, enables the BS to receive from the UE a report including at least one Tx / Rx beam pair selected by the UE based on beam pair selection measurement.

[0151] In one configuration, the apparatus 1200 for wireless communication includes: a unit for receiving from a base station configuration information for performing beam pair selection measurements at the apparatus with respect to a subset of candidate beams, the beam pair selection measurements including at least self-interference measurements between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams at the apparatus, wherein the configuration information indicates measurement gaps between self-interference measurements. The apparatus 1200 further includes: a unit for performing beam pair selection measurements based on the configuration information; a unit for selecting at least one Tx / Rx beam pair from the subset of candidate beams based on the performed beam pair selection measurements; and a unit for transmitting a report to the base station including the selected at least one Tx / Rx beam pair.

[0152] In one aspect, the aforementioned unit may be in Figure 12 The processor 1204 shown is configured to perform the functions described in the aforementioned unit. Alternatively, the aforementioned unit may be a circuit or any device configured to perform the functions described in the aforementioned unit.

[0153] Of course, in the above example, the circuitry included in processor 1204 is provided merely as an example, and other units for performing the described functions may be included in various aspects of this disclosure, including but not limited to instructions stored in computer-readable storage medium 1206, or in Figure 1-11 Any of the figures described and using, for example, this article on... Figure 14 Any other suitable device or unit for the described process and / or algorithm.

[0154] In one configuration, the apparatus 1300 for wireless communication includes: a unit for transmitting to a user equipment (UE) configuration information at the UE for beam pair selection measurements of a subset of candidate beams at the UE. The beam pair selection measurements may include at least self-interference measurements at the UE between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams. The configuration information indicates measurement gaps between self-interference measurements. The apparatus 1300 also includes: a unit for receiving from the UE a report including at least one Tx / Rx beam pair selected by the UE based on the beam pair selection measurements.

[0155] In one aspect, the aforementioned unit may be in Figure 13 The processor 1304 shown is configured to perform the functions described in the aforementioned unit. Alternatively, the aforementioned unit may be a circuit or any device configured to perform the functions described in the aforementioned unit.

[0156] Of course, in the above example, the circuitry included in processor 1304 is provided merely as an example, and other units for performing the described functions may be included in various aspects of this disclosure, including but not limited to instructions stored in computer-readable storage medium 1306, or in Figure 1-11 Any of the figures described and using, for example, this article on... Figure 15 Any other suitable device or unit for the described process and / or algorithm.

[0157] Example Terms

[0158] Implementation examples are described in the following numbered clauses:

[0159] Clause 1: A method for wireless communication for a user equipment (UE), comprising: receiving from a base station configuration information for performing beam pair selection measurements at the UE with respect to a subset of candidate beams, the beam pair selection measurements including at least self-interference measurements at the UE between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams, wherein the configuration information indicates measurement gaps between the self-interference measurements; performing the beam pair selection measurements based on the configuration information; selecting at least one Tx / Rx beam pair from the subset of candidate beams based on the performed beam pair selection measurements; and transmitting to the base station a report including the selected at least one Tx / Rx beam pair.

[0160] Clause 2, the method according to Clause 1, wherein performing the beam pair selection measurement comprises: determining a corresponding reception timing difference between a downlink (DL) signal and an uplink (UL) signal for each of one or more Tx / Rx beam pairs from the candidate beam subset.

[0161] Clause 3. The method according to Clause 2, wherein selecting the at least one Tx / Rx beam pair comprises: comparing the corresponding reception timing difference between the DL signal and the UL signal for each of the one or more Tx / Rx beam pairs with a threshold value; and identifying the Tx / Rx beam pair among the one or more Tx / Rx beam pairs for which the corresponding reception timing difference between the DL signal and the UL signal is lower than the threshold value.

[0162] Clause 4, the method according to Clause 3, wherein the threshold value is set to the cycle prefix duration.

[0163] Clause 5. The method according to any one of Clauses 2-4, wherein selecting the at least one Tx / Rx beam pair further comprises: identifying the Tx / Rx beam pair among the one or more Tx / Rx beam pairs based on at least one constraint applied to the corresponding reception timing difference between the DL signal and the UL signal.

[0164] Clause 6. The method according to any one of Clauses 2-5, wherein determining the corresponding reception timing difference for each of the one or more Tx / Rx beam pairs comprises: determining a first reception time for downlink transmission at the receive (Rx) beam in one of the one or more Tx / Rx beam pairs; transmitting uplink transmission from the transmit (Tx) beam in the one of the one or more Tx / Rx beam pairs; determining a second reception time for the uplink transmission at the receive (Rx) beam in the one of the one or more Tx / Rx beam pairs; and determining the duration between the first reception time and the second reception time.

[0165] Clause 7. The method according to Clause 6, wherein the uplink transmission includes a sounding reference signal (SRS).

[0166] Clause 8. The method according to any one of Clauses 6-7, wherein the second reception time of the uplink transmission is determined during one of the measurement gaps.

[0167] Clause 9. The method according to Clause 8, wherein one of the measurement gaps enables the UE to perform a beam switching operation.

[0168] Clause 10. The method according to any one of Clauses 6-9, wherein the uplink transmission is sent based on a timing advance received from the base station.

[0169] Clause 11. The method according to any one of Clauses 1-10, wherein the configuration information further indicates the duration for one or more measurement gaps in the measurement gaps, wherein each self-interference measurement in the self-interference measurements is performed via a probe reference signal (SRS) transmission.

[0170] Clause 12, the method according to Clause 11, wherein the duration is indicated as one or more orthogonal frequency division multiplexing (OFDM) symbols.

[0171] Clause 13, the method according to Clause 12, wherein the duration is indicated to the UE in a Radio Resource Control (RRC) message, a Media Access Control (MAC) Control Element (MAC-CE), or in a Downlink Control Information (DCI).

[0172] Clause 14. The method according to any one of Clauses 1-13, wherein the configuration information further indicates an initial measurement gap between a self-interference measurement and a channel measurement and the self-interference measurement.

[0173] Clause 15: A method for wireless communication for a base station (BS), comprising: transmitting to a user equipment (UE) configuration information at the UE for beam pair selection measurements of a subset of candidate beams at the UE, the beam pair selection measurements including at least self-interference measurements between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams at the UE, wherein the configuration information indicates measurement gaps between the self-interference measurements; and receiving from the UE a report including at least one Tx / Rx beam pair selected by the UE based on the beam pair selection measurements.

[0174] Clause 16. The method according to Clause 15, wherein each of the measurement gaps enables the UE to determine a corresponding reception timing difference between the downlink (DL) signal and the uplink (UL) signal for each Tx / Rx beam pair from one or more Tx / Rx beam pairs of the candidate beam subset.

[0175] Clause 17. The method according to any one of Clauses 15-16 further includes: avoiding scheduling downlink transmissions for the UE during the measurement gap.

[0176] Clause 18. The method according to any one of Clauses 15-17, wherein at least one of the measurement gaps enables the UE to perform a beam switching operation.

[0177] Clause 19. The method according to any one of Clauses 15-18, wherein the configuration information further indicates the duration of one or more measurement gaps in the measurement gaps.

[0178] Clause 20, the method according to Clause 19, wherein the duration is indicated as one or more orthogonal frequency division multiplexing (OFDM) symbols.

[0179] Clause 21, the method according to Clause 20, wherein the duration is indicated to the UE in a Radio Resource Control (RRC) message, a Media Access Control (MAC) Control Element (MAC-CE), or in a Downlink Control Information (DCI).

[0180] Clause 22. The method according to any one of Clauses 15-21, wherein the configuration information further indicates an initial measurement gap between a self-interference measurement and a channel measurement and the self-interference measurement.

[0181] Clause 23: A processing system comprising: a memory including computer-executable instructions; and one or more processors configured to execute the computer-executable instructions and cause the processing system to perform the method according to any one of Clauses 1-22.

[0182] Clause 24: A processing system comprising: a unit for performing the method according to any one of Clauses 1-22.

[0183] Clause 25: A non-transitory computer-readable medium comprising computer-executable instructions that, when executed by one or more processors of a processing system, cause the processing system to perform the method according to any one of Clauses 1-22.

[0184] Clause 26: A computer program product embodied on a computer-readable storage medium, comprising code for performing a method pursuant to any one of Clauses 1-22.

[0185] Additional considerations

[0186] Several aspects of wireless communication networks have been described with reference to exemplary implementations. As will be readily apparent to those skilled in the art, the various aspects described throughout this disclosure can be extended to other telecommunications systems, network architectures, and communication standards.

[0187] For example, these aspects can be implemented in other systems defined by 3GPP, such as Long Term Evolution (LTE), Evolved Packet System (EPS), Universal Mobile Telecommunications System (UMTS), and / or Global System for Mobile Communications (GSM). The aspects can also be extended to systems defined by 3GPP2 (3rd Generation Partnership Project 2), such as CDMA2000 and / or Evolved Data Optimized (EV-DO). Other examples can be implemented in systems using IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Ultra Wideband (UWB), Bluetooth, and / or other suitable systems. The actual telecommunications standards, network architecture, and / or communication standards used depend on the specific application and the overall design constraints imposed on the system.

[0188] In this disclosure, the term “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 superior or advantageous to other aspects of this disclosure. Similarly, the term “aspect” does not require that all aspects of this disclosure include the features, advantages, or modes of operation discussed. The term “coupling” is used herein to refer to 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 coupled to each other, even if they are not in direct physical contact. For example, a first object can be coupled to a second object, even if the first object never physically contacts the second object. The terms “circuit” and “electronic circuit” are used broadly, and they are intended to include hardware implementations of electronic devices and conductors (whereby these electronic devices and conductors, when connected and configured, perform the functions described in this disclosure, without limitation on the type of electronic circuit) and software implementations of information and instructions (whereby these information and instructions, when executed by a processor, perform the functions described in this disclosure). As used herein, the term “obtain” can include one or more actions, including but not limited to receiving, generating, determining, or any combination thereof.

[0189] Can be Figure 1-15One or more of the components, steps, features, and / or functions shown herein may be rearranged and / or combined into a single component, step, feature, or function, or embodied in several components, steps, or functions. Furthermore, additional elements, components, steps, and / or functions may be added without departing from the novel features disclosed herein. Figure 1-15 The apparatus, devices, and / or components shown herein can be configured to perform one or more of the methods, features, or steps described herein. The novel algorithms described herein can also be efficiently implemented in software and / or embedded in hardware.

[0190] It should be understood that the specific order or hierarchy of steps in the methods disclosed herein is merely illustrative of exemplary processes. It should be understood that the specific order or hierarchy of steps in these methods may be rearranged based on design preferences. The appended method claims give the elements of each step in an illustrative order, but this does not imply that they are limited to the given specific order or hierarchy unless expressly stated herein.

[0191] The preceding 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 apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but are given the full scope consistent with the text of the claims, wherein references to singular elements, unless expressly stated otherwise, are not intended to mean “one and only one,” but rather “one or more.” Unless expressly stated otherwise, the term “some” means one or more. The phrase “at least one” referring to a list of items means any combination of those items, including a single member. For example, “at least one of a, b, or c” is intended to cover: 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 throughout the various aspects described in this disclosure are expressly incorporated herein by reference and are intended to be included by the claims, such structural and functional equivalents being known or to be known by those skilled in the art. Furthermore, nothing herein is intended to be offered to the public, whether or not such disclosure is expressly recited in the claims.

Claims

1. A method for wireless communication for a user equipment (UE), comprising: The base station receives configuration information for performing beam pair selection measurements at the UE with respect to a subset of candidate beams, the beam pair selection measurements including at least self-interference measurements between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams at the UE; The beampair selection measurement is performed based on the configuration information, wherein performing the beampair selection measurement includes: determining a corresponding reception timing difference between a downlink (DL) signal and an uplink (UL) signal for each Tx / Rx beampair from one or more Tx / Rx beampairs from the candidate beampair subset, and wherein the configuration information indicates measurement gaps between transmissions used for the self-interference measurement, and each measurement gap enables the timing difference determination; At least one Tx / Rx beam pair is selected from the candidate beam subset based on the performed beam pair selection measurement; and Send a report to the base station including at least one selected Tx / Rx beam pair.

2. The method of claim 1, wherein, Selecting the at least one Tx / Rx beam pair includes: The corresponding reception timing difference between the DL signal and the UL signal for each of the one or more Tx / Rx beam pairs is compared with a threshold value; and Identify the Tx / Rx beam pair among the one or more Tx / Rx beam pairs for which the corresponding reception timing difference between the DL signal and the UL signal is below the threshold value.

3. The method of claim 2, wherein, The threshold value is set to the duration of the loop prefix.

4. The method of claim 1, wherein, The selection of the at least one Tx / Rx beam pair further includes: identifying the Tx / Rx beam pair among the one or more Tx / Rx beam pairs based on at least one constraint applied to the corresponding reception timing difference between the DL signal and the UL signal.

5. The method of claim 1, wherein, Determining the corresponding reception timing difference for each of the one or more Tx / Rx beam pairs includes: Determine the first reception time of downlink transmission at the receive (Rx) beam in one of the one or more Tx / Rx beam pairs; Uplink transmission is transmitted from the transmit (Tx) beam in one of the one or more Tx / Rx beam pairs; Determine the second reception time of the uplink transmission at the receive (Rx) beam in one of the one or more Tx / Rx beam pairs; and Determine the duration between the first reception time and the second reception time.

6. The method of claim 5, wherein, The uplink transmission includes a sounding reference signal (SRS).

7. The method according to claim 5, wherein, The second reception time of the uplink transmission is determined during one of the measurement gaps.

8. The method of claim 7, wherein, The measurement gap in the measurement gap enables the UE to perform beam switching operations.

9. The method of claim 5, wherein, The uplink transmission is based on a timing advance received from the base station.

10. The method of claim 1, wherein, The configuration information also indicates the duration of one or more measurement gaps in the measurement gaps, wherein each self-interference measurement in the self-interference measurement is performed via a probe reference signal (SRS) transmission.

11. The method of claim 10, wherein, The duration is indicated as one or more orthogonal frequency division multiplexing (OFDM) symbols.

12. The method of claim 11, wherein, The duration is indicated to the UE in a Radio Resource Control (RRC) message, a Media Access Control (MAC) Control Element (MAC-CE), or a Downlink Control Information (DCI).

13. The method of claim 1, wherein, The configuration information also indicates an initial measurement gap between the channel measurement and one of the self-interference measurements.

14. An apparatus for wireless communication, comprising: At least one processor; A transceiver communicatively coupled to the at least one processor; as well as A memory, communicatively coupled to the at least one processor. The processor is configured as follows: The device receives configuration information from a base station for performing beam pair selection measurements at the device with respect to a subset of candidate beams, the beam pair selection measurements including at least self-interference measurements between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams at the device. The processor is further configured to perform the beam pair selection measurement based on the configuration information, wherein the processor is also configured to determine a corresponding reception timing difference between a downlink (DL) signal and an uplink (UL) signal for each Tx / Rx beam pair from one or more Tx / Rx beam pairs of the candidate beam subset, and wherein the configuration information indicates measurement gaps between transmissions for the self-interference measurement, and each of the measurement gaps enables the timing difference determination; At least one Tx / Rx beam pair is selected from the candidate beam subset based on the performed beam pair selection measurement; and Send a report to the base station including at least one selected Tx / Rx beam pair.

15. The apparatus of claim 14, wherein, The processor configured to select the at least one Tx / Rx beam pair is further configured to: The corresponding reception timing difference between the DL signal and the UL signal for each of the one or more Tx / Rx beam pairs is compared with a threshold value. as well as Identify the Tx / Rx beam pair among the one or more Tx / Rx beam pairs for which the corresponding reception timing difference between the DL signal and the UL signal is below the threshold value.

16. The apparatus of claim 15, wherein, The threshold value is set to the duration of the loop prefix.

17. The apparatus of claim 14, wherein, In order to select the at least one Tx / Rx beam pair, the processor is further configured to identify the Tx / Rx beam pair among the one or more Tx / Rx beam pairs based on at least one constraint applied to the corresponding reception timing difference between the DL signal and the UL signal.

18. The apparatus of claim 14, wherein, The processor, configured to determine the corresponding receive timing difference for each of the one or more Tx / Rx beam pairs, is further configured to: Determine the first reception time of downlink transmission at the receive (Rx) beam in one of the one or more Tx / Rx beam pairs; Uplink transmission is transmitted from the transmit (Tx) beam in one of the one or more Tx / Rx beam pairs; Determine the second reception time of the uplink transmission at the receive (Rx) beam in one of the one or more Tx / Rx beam pairs; as well as Determine the duration between the first reception time and the second reception time.

19. The apparatus of claim 18, wherein, The uplink transmission includes a sounding reference signal (SRS).

20. A non-transitory computer-readable medium storing computer-executable code, comprising code for causing a computer to perform the following operations: The base station receives configuration information for performing beam pair selection measurements at the user equipment (UE) with respect to a subset of candidate beams, the beam pair selection measurements including at least self-interference measurements between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams at the UE; The beam pair selection measurement is performed based on the configuration information, wherein... The code also enables the computer to: determine a corresponding reception timing difference between a downlink (DL) signal and an uplink (UL) signal for each Tx / Rx beam pair from one or more Tx / Rx beam pairs of the candidate beam subset, wherein the configuration information indicates a measurement gap between transmissions for the self-interference measurement, and each of the measurement gaps enables the timing difference determination; At least one Tx / Rx beam pair is selected from the candidate beam subset based on the performed beam pair selection measurement; and Send a report to the base station including at least one selected Tx / Rx beam pair.

21. A method for wireless communication for a base station (BS), comprising: The configuration information is sent to the User Equipment (UE) for beam pair selection measurements at the UE regarding a subset of candidate beams, the beam pair selection measurements including at least self-interference measurements at the UE between one or more transmit (Tx) beams and one or more receive (Rx) beams in the subset of candidate beams, wherein the configuration information indicates measurement gaps between transmissions for the self-interference measurements, and each of the measurement gaps enables the UE to determine a corresponding reception timing difference between a downlink (DL) signal and an uplink (UL) signal for each of the one or more Tx / Rx beam pairs from the subset of candidate beams; and The UE receives a report including at least one Tx / Rx beam pair selected by the UE based on the beam pair selection measurement.

22. The method of claim 21, further comprising: Downlink transmissions for the UE are avoided during the measurement interval.

23. The method of claim 21, wherein, At least one of the measurement gaps enables the UE to perform beam switching operations.

24. The method of claim 21, wherein, The configuration information also indicates the duration of one or more of the measurement gaps.

25. The method of claim 24, wherein, The duration is indicated as one or more orthogonal frequency division multiplexing (OFDM) symbols.

26. The method of claim 25, wherein, The duration is indicated to the UE in a Radio Resource Control (RRC) message, a Media Access Control (MAC) Control Element (MAC-CE), or a Downlink Control Information (DCI).

27. The method of claim 21, wherein, The configuration information also indicates an initial measurement gap between the channel measurement and one of the self-interference measurements.

Images