Method for self-interferometry and cross-link interferometry in the millimeter wave band.

Abstract

A method, system, and device for wireless communications for self-interference or crosslink interference measurement in a user equipment (UE) are described. The UE may receive configuration information from a base station indicating one or more slot format index (SFI) values ​​compatible with crosslink or self-interference measurements. Based on the configured SFI(s), the UE may measure interference in multiple symbols that can be used to estimate the amount of crosslink or self-interference, and the UE may transmit a measurement report to the base station. Based on the measurement report, the base station may identify one or more compatible SFIs, beam pairs, or combinations thereof for subsequent communication with one or more UEs. The interference measurement may identify crosslink interference at the UE resulting from transmissions of different UEs or may identify self-interference of simultaneous communication of multiple channels at the same UE.

Description

Claiming priority

[0001] cross reference

[0001] This patent application claims the benefit of U.S. Provisional Patent Application No. 63 / 009,236, entitled "Methods for Self-Interference and Cross-Link Interference Measurements in Millimeter Wave Bands," filed April 13, 2020, by Raghavan et al., and U.S. Patent Application No. 17 / 224,004, entitled "Methods for Self-Interference and Cross-Link Interference Measurements in Millimeter Wave Bands," filed April 6, 2021, by Raghavan et al., each of which is assigned to the assignee of the present application. [Technical field]

[0002] The following relates generally to wireless communications and methods for self-interference and cross-link interference measurements in the millimeter wave (mmW) band. [Background technology]

[0003]

[0003] Wireless communication systems have been widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasts, and the like. These systems may be capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems, such as Long Term Evolution (LTE), LTE Advanced (LTE-A), or LTE-A Pro systems, and fifth generation (5G) systems, sometimes referred to as New Radio (NR) systems. These systems may employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, sometimes known as user equipment (UE). Summary of the Invention

[0004]

[0004] The described techniques relate to improved methods, systems, devices, and apparatuses supporting methods for self-interference measurement and crosslink interference measurement in the millimeter wave (mmW) band. Various aspects provide that a user equipment (UE) may receive configuration information from a base station indicating one or more slot format index (SFI) values ​​suitable for crosslink interference measurement or self-interference measurement. Based on the configured SFI(s), the UE may measure interference in multiple symbols that may be used to estimate an amount of crosslink interference or self-interference and transmit a measurement report to the base station. In some cases, the UE may indicate one or more SFIs suitable for communication with the UE based on the interference measurement. The base station may identify one or more suitable SFIs for communication with one or more UEs based on the measurement report and perform communication using the identified suitable SFIs. In some cases, the interference measurement may identify crosslink interference at the UE resulting from transmissions of different UEs. In some cases, the interference measurement may identify self-interference of simultaneous communication of multiple channels at the same UE.

[0005] A method of wireless communication in a base station is described. The method may include: selecting a first SFI for communication with a first UE via a first carrier and a second SFI for communication with a second UE via a second carrier, where the first SFI and the second SFI are selected based on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE, configuring a first slot format at the first UE with the first SFI and configuring a second slot format at the second UE with the second SFI, and receiving a measurement report for one or more of the first UE or the second UE, where the measurement report indicates one or more interference measurements according to the first SFI or the second SFI.

[0006] An apparatus for wireless communication in a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: select a first SFI for communication with a first UE over a first carrier and a second SFI for communication with a second UE over a second carrier, where the first SFI and the second SFI are selected based on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE; configure a first slot format at the first UE with the first SFI and configure a second slot format at the second UE with the second SFI; and receive a measurement report for one or more of the first UE or the second UE, where the measurement report indicates one or more interference measurements according to the first SFI or the second SFI.

[0007] Another apparatus for wireless communication in a base station is described. The apparatus may include means for selecting a first SFI for communication with a first UE over a first carrier and a second SFI for communication with a second UE over a second carrier, where the first SFI and the second SFI are selected based on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE, configuring a first slot format at the first UE with the first SFI and configuring a second slot format at the second UE with the second SFI, and receiving a measurement report for the one or more of the first UE or the second UE, where the measurement report indicates one or more interference measurements according to the first SFI or the second SFI.

[0008] A non-transitory computer-readable medium storing code for wireless communication in a base station is described. The code may include instructions executable by a processor to select a first SFI for communication with a first UE over a first carrier and a second SFI for communication with a second UE over a second carrier, where the first SFI and the second SFI are selected based on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE, configure a first slot format at the first UE with the first SFI and configure a second slot format at the second UE with the second SFI, and receive a measurement report for one or more of the first UE or the second UE, where the measurement report indicates one or more interference measurements according to the first SFI or the second SFI.

[0009]

[0009] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a first symbol of each of the first SFI and the second SFI is configured to be a downlink symbol, with the first UE and the second UE each receiving information from a base station during the first symbol, the second symbol of the first UE is configured for uplink transmission from the first UE, the second UE is configured for downlink reception during the second symbol, and the second UE is configured to measure interference from simultaneous transmissions from the first UE and the base station during the second symbol relative to a baseline case of downlink reception from only the base station during the first symbol. Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for configuring either uplink transmission or downlink reception in the first symbol or the second symbol at the first UE or the second UE via flexible or gap symbol reconfiguration, where the measurement report indicates a crosslink interference measurement of the first UE based on a measurement difference between the first symbol and the second symbol. In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based on a subcarrier spacing (SCS) of the first UE or the second UE. In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based on an interference estimation quality associated with the measurement report. In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the interference estimation quality may be a band-specific estimation quality, a bandwidth portion-specific estimation quality, or a link-specific estimation quality.

[0010] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a power level at the first UE may be configured based on the first SFI being selected for suitability for measuring interference between the first UE and the second UE. Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for configuring beamforming parameters of the first UE and beamforming parameters of the second UE to be consistent during at least a portion of the first SFI and a portion of the second SFI that are to be used to measure crosslink interference between the first UE and the second UE.

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include an operation, feature, means, or instruction for receiving a request from one or more of the first UE or the second UE to perform interference measurements for one or more SFIs, where the selecting and configuring are performed in response to the request. In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the measurement report is received from the second UE and provides one or more of an indication of a set of matching SFIs based on the interference measurements at the second UE, a first interference estimate associated with a first symbol of a slot during which the first UE does not transmit, a second interference estimate associated with a second symbol of a slot during which the first UE transmits uplink communications, or any combination thereof. In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first UE and the second UE may be the same UE, where the first carrier uses a first frequency band and the second carrier uses a second frequency band that is different from the first frequency band.

[0012] A method of wireless communication in a second UE is described, which may include receiving configuration information from a base station indicating a first SFI for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI, and transmitting a measurement report to the base station providing one or more of a first interference measurement, a second interference measurement, an indication of a set of matching SFIs based on the first interference estimate and the second interference estimate, or any combination thereof, where the first interference estimate is based on a first interference measurement during the first measurement symbol and the second interference estimate is based on a second interference measurement during the second measurement symbol.

[0013] An apparatus for wireless communication in a second UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive configuration information from a base station indicating a first SFI for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI, and to transmit to the base station a measurement report providing one or more of a first interference measurement, a second interference measurement, an indication of a set of matching SFIs based on the first interference estimate and the second interference estimate, or any combination thereof, where the first interference estimation is based on the first interference measurement during the first measurement symbol and the second interference estimation is based on the second interference measurement during the second measurement symbol.

[0014] Another apparatus for wireless communication in a second UE is described, which may include means for receiving, from a base station, configuration information indicating a first SFI for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI, and transmitting, to the base station, a measurement report providing one or more of a first interference measurement, a second interference measurement, an indication of a set of compatible SFIs based on the first interference estimate and the second interference estimate, or any combination thereof, where the first interference estimate is based on the first interference measurement during the first measurement symbol and the second interference estimate is based on the second interference measurement during the second measurement symbol.

[0015] A non-transitory computer-readable medium storing code for wireless communication in a second UE is described. The code may include instructions executable by a processor to receive, from a base station, configuration information indicating a first SFI for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI, and to transmit, to the base station, a measurement report providing one or more of a first interference measurement, a second interference measurement, an indication of a set of matching SFIs based on the first interference estimate and the second interference estimate, or any combination thereof, where the first interference estimate is based on the first interference measurement during the first measurement symbol and the second interference estimate is based on the second interference measurement during the second measurement symbol.

[0016]

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first measurement symbol is configured to be a downlink symbol for receiving information at the second UE from the base station during the first measurement symbol, the second measurement symbol is configured for uplink transmission at the first UE and is configured to be a downlink symbol for receiving information at the second UE from the base station, and the measurement report indicates interference from simultaneous transmissions from the first UE and the base station during the second measurement symbol relative to a baseline case of downlink reception from only the base station during the first measurement symbol. Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include operations, features, means, or instructions for receiving from the base station, via flexible or gap symbol reconfiguration, further configuration information for configuring either uplink transmission or downlink reception in the first measurement symbol or the second measurement symbol, where the measurement report indicates a crosslink interference measurement of the UE based on a measurement difference between the first measurement symbol and the second measurement symbol. In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the measurement report indicates one or more of a set of SFIs compatible for communication with the second UE, a set of beam pairs compatible for communication with the second UE, or any combination thereof.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of symbols or slots for which the first SFI is configured for crosslink measurements may be based on the SCS of the second UE. In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the number of symbols or slots for which the first SFI is configured for crosslink measurements may be based on an interference estimation quality associated with a measurement report. In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the interference estimation quality may be a band-specific estimation quality, a bandwidth portion-specific estimation quality, or a link-specific estimation quality.

[0018] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receive beamforming parameters of the second UE are configured to be consistent at least during the first measurement symbol and during the second measurement symbol. Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may further include an operation, feature, means, or instruction for transmitting a request to the base station to perform interference measurements for one or more slot formats, where the configuration information is received in response to the request. [Brief description of the drawings]

[0019] [Figure 1]

[0019] FIG. 1 illustrates an example of a system for wireless communications supporting a method for self-interference measurement and cross-link interference measurement in the millimeter wave (mmW) band according to an aspect of the present disclosure. [Diagram 2]

[0020] FIG. 2 illustrates an example of a portion of a wireless communication system supporting a method for self-interference and crosslink interference measurements in the mmW band, according to an embodiment of the present disclosure. [Diagram 3]

[0021] FIG. 1 illustrates an example of a configured slot format supporting a method for self-interference and cross-link interference measurements in the mmW band, according to an embodiment of the present disclosure. [Figure 4]

[0022] FIG. 1 illustrates an example of a configured slot format supporting a method for self-interference and cross-link interference measurements in the mmW band, according to an embodiment of the present disclosure. [Diagram 5]

[0023] FIG. 1 illustrates an example of a configured slot format supporting a method for self-interference and cross-link interference measurements in the mmW band, according to an embodiment of the present disclosure. [Figure 6]

[0024] FIG. 1 illustrates an example of a process flow supporting a method for self-interference and cross-link interferometry measurements in the mmW band, in accordance with an embodiment of the present disclosure. [Figure 7]

[0025] 1 is a block diagram of a device supporting a method for self-interference measurement and cross-link interference measurement in the mmW band, according to an embodiment of the present disclosure. [Figure 8] 1 is a block diagram of a device supporting a method for self-interference measurement and cross-link interference measurement in the mmW band, according to an embodiment of the present disclosure. [Figure 9]

[0026] 1 is a block diagram of a communications manager supporting a method for self-interference measurement and crosslink interference measurement in the mmW band, according to an embodiment of the present disclosure. [Figure 10]

[0027] FIG. 1 illustrates a diagram of a system including devices supporting a method for self-interference measurements and cross-link interference measurements in the mmW band, according to an embodiment of the present disclosure. [Figure 11]

[0028] 1 is a block diagram of a device supporting a method for self-interference measurement and cross-link interference measurement in the mmW band, according to an embodiment of the present disclosure. [Figure 12] 1 is a block diagram of a device supporting a method for self-interference measurement and cross-link interference measurement in the mmW band, according to an embodiment of the present disclosure. [Figure 13]

[0029] 1 is a block diagram of a communications manager supporting a method for self-interference measurement and crosslink interference measurement in the mmW band, according to an embodiment of the present disclosure. [Figure 14]

[0030] FIG. 1 illustrates a diagram of a system including devices supporting a method for self-interference measurements and cross-link interference measurements in the mmW band, according to an embodiment of the present disclosure. [Figure 15]

[0031] 1 is a flow chart illustrating a method supporting a method for self-interference measurements and cross-link interference measurements in the mmW band, according to an embodiment of the present disclosure. [Figure 16] 1 is a flow chart illustrating a method supporting a method for self-interference measurements and cross-link interference measurements in the mmW band, according to an embodiment of the present disclosure. [Figure 17] 1 is a flow chart illustrating a method supporting a method for self-interference measurements and cross-link interference measurements in the mmW band, according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020]

[0032] In some deployments, wireless communication systems may operate in millimeter wave (mmW) frequency ranges (e.g., 24.25-29 GHz, 37-40 GHz, 52.6-71 GHz, etc.). Wireless communication at these frequencies may be associated with increased signal attenuation (e.g., path loss, penetration loss, interference loss), which may be affected by various factors, such as diffraction, propagation environment, density of interference, material properties, etc. As a result, signal processing techniques such as beamforming may be used to coherently combine energy at these frequencies and overcome path loss. Due to the increased amount of path, penetration and interference loss in mmW communication systems, transmissions between wireless devices (e.g., from base stations and / or user equipment (UE)) may be beamformed. Moreover, receiving devices may use beamforming techniques to configure antenna(s) and / or antenna array(s) and / or antenna array(s) module(s) such that transmissions are received in a directional manner.

[0021]

[0033] Furthermore, in some deployments, the UE and base station may communicate using time division duplexing (TDD). To provide the UE and base station with enhanced flexibility, dynamic TDD techniques may be used, where several different TDD formats are available, where symbols within a slot may be configured as uplink symbols, downlink symbols, or flexible symbols. A particular TDD format suitable for the instantaneous ratio of uplink and downlink traffic at the UE may be selected. A particular TDD format may be requested by the UE and / or indicated to the UE as a slot format index (SFI), where multiple different SFIs are mapped to different TDD formats of uplink / downlink symbols or flexible symbols. Furthermore, if an SFI is associated with a slot format having one or more flexible symbols, the base station may indicate to the UE whether such a symbol should be used as an uplink symbol, a downlink symbol, or a gap symbol, which may be used for retuning transmit / receive circuitry, measurements at the UE, etc.

[0022]

[0034] Furthermore, different UEs may be configured with different SFIs, which may cause cross-link interference at one or more other UEs. For example, if a first UE is configured to receive downlink communication at a particular symbol and a neighboring UE is configured to transmit uplink communication at that same symbol, the first UE may experience interference when attempting to receive the downlink communication. Additionally or alternatively, the first UE may have the capability for simultaneous communication on different channels (e.g., using inter-band carrier aggregation in different frequency ranges or using full duplex techniques within the same UE) and may be configured with different SFIs for the different channels, which may cause self-interference at the first UE.

[0023]

[0035] Various techniques described herein provide for self-interference and crosslink interference measurements in one or more UEs. In some cases, the UE may receive configuration information from a base station indicating one or more SFIs compatible for crosslink or self-interference measurements. Based on the configured SFI(s), the UE may measure interference in a number of symbols that may be used to estimate an amount of crosslink or self-interference and send a measurement report to the base station. In some cases, the UE may indicate one or more SFIs compatible for communication with the UE based on the interference measurement. The base station may identify one or more compatible SFIs for communication with one or more UEs based on the measurement report and conduct the communication using the identified compatible SFIs.

[0024]

[0036] In some cases, the base station may coordinate compatible SFIs and coordinate beams in different UEs or within the same UE so that an appropriate set of symbols is configured in a transmit or receive role across one or more slots of one or more UEs to enable self-interference or crosslink interference measurements. In some cases, a UE with one or more symbols configured in a receive role may measure interference in different symbols, where at least one of the measured symbols is used for transmission of another UE or the same UE (e.g., on another carrier in an inter-band carrier aggregation configuration). Measurement reports indicating the measured interference may be used at the UE or at the base station to identify one or more compatible SFIs, one or more beamforming parameters, or any combination thereof for subsequent communication of one or more UEs.

[0025]

[0037] In some cases, the number of symbols / slots for which coordination is required for measurement depends on one or more of the subcarrier spacing (SCS) across one or more UEs, the crosslink interference or self-interference estimation quality (which may be band-specific or link quality-specific, for example), or any combination thereof. Furthermore, in some cases, the power level for simultaneous communication may be set by the base station such that the uplink transmission in the uplink symbol of the UE in the transmitting role is suitable for measuring interference. In some cases, one or more UEs may send a request to the base station to perform measurements, or the base station may determine that a measurement procedure should be performed. In some cases, based on measurements at the UEs in the measuring role, the self-interference or crosslink interference levels identified in these measurements, the UE may recommend a set of compatible SFI pairs for communication, an appropriate set of beam pairs for use in communication, or a combination thereof.

[0026]

[0038] Such techniques may provide one or more advantages in systems utilizing dynamic TDD. For example, by enabling measurements of crosslink interference or self-interference at the UE, a more accurate estimate of interference between different SFIs may be determined, which may enable selection of compatible SFIs and beam pairs for subsequent communications. This may result in enhanced likelihood of successful communications through management of potential interference sources. Wireless resource efficiency may be further enhanced by scheduling devices for simultaneous communications, which may enable multiple devices to communicate, thereby increasing overall system throughput. Additionally, beamforming parameter selection based on interference measurements may reduce instances where a transmitting device may interfere with a receiving device, which may reduce instances of retransmission of communications that were unsuccessfully received.

[0027]

[0039] Aspects of the present disclosure are first described in the context of a wireless communication system. Then, various examples of SFI and measurement techniques are described. Aspects of the present disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flow charts relating to methods for self-interference and cross-link interference measurements in the mmW band.

[0028]

[0040] FIG. 1 illustrates an example of a wireless communication system 100 supporting a method for self-interference measurement and crosslink interference measurement in the mmW band according to an embodiment of the disclosure. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, a LTE-Advanced (LTE-A) network, a LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission-critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.

[0029]

[0041] The base stations 105 may be distributed throughout a geographic area to form a wireless communication system 100 and may be devices of different forms or with different capabilities. The base stations 105 and the UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base stations 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which the base stations 105 and the UEs 115 may support communication of signals according to one or more radio access technologies.

[0030]

[0042] The UEs 115 may be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be fixed, or mobile, or both at different times. The UEs 115 may be devices of different forms or with different capabilities. Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), as shown in FIG. 1.

[0031]

[0043] The base stations 105 may communicate with the core network 130, with each other, or both. For example, the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface). The base stations 105 may communicate with each other over the backhaul links 120 (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0032]

[0044] One or more of the base stations 105 described herein may include or be referred to by one skilled in the art as a base transceiver station, radio base station, access point, radio transceiver, Node B, eNode B (eNB), Next Generation Node B or Giga Node B (any of which may be referred to as a gNB), Home Node B, Home eNode B, or other suitable terminology.

[0033]

[0045] The UE 115 may include or be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where a "device" may also be referred to as a unit, a station, a terminal, or a client, among other examples. The UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, the UE 115 may include or be referred to as a Wireless Local Loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a Machine Type Communication (MTC) device, among other examples, which may be implemented in various objects, such as an appliance, or a vehicle, a meter, among other examples.

[0034]

[0046] The UEs 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may act as relays at times, as shown in FIG. 1, as well as base stations 105 and network equipment, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples.

[0035]

[0047] The UE 115 and the base station 105 may wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier used for the communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling that coordinates the operation of the carrier, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. The UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0036]

[0048] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition or control signaling that coordinates operation for other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be arranged according to a channel raster for discovery by the UE 115. A carrier may be operated in a standalone mode where initial acquisition and connection may be made by the UE 115 over the carrier, or a carrier may be operated in a non-standalone mode where a connection is established using a different carrier (e.g., of the same or different radio access technology).

[0037]

[0049] The communication links 125 shown in the wireless communication system 100 may include uplink transmissions from the UE 115 to the base station 105 or downlink transmissions from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode) or may be configured to carry downlink and uplink communications (e.g., in TDD mode).

[0038]

[0050] A carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several determined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)) for a carrier of a particular radio access technology. The devices (e.g., the base station 105, the UE 115, or both) of the wireless communication system 100 may have a hardware configuration that supports communication on a particular carrier bandwidth or may be configurable to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., a sub-band, BWP) or all of the carrier bandwidth.

[0039]

[0051] A signal waveform transmitted on a carrier may be composed of multiple subcarriers (e.g., using a multicarrier modulation (MCM) technique such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may consist of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, where the symbol period and the subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Thus, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate for the UE 115 may be. Wireless communication resources may refer to a combination of radio frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communication with the UE 115.

[0040]

[0052] One or more numerologies may be supported for a carrier, where the numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communication for the UE 115 may be limited to one or more active BWPs.

[0041]

[0053] The time interval for the base station 105 or the UE 115 may be, for example, T s =1 / (Δf max N f ) seconds, where Δf max may represent the maximum subcarrier spacing supported, and N fmay represent the maximum discrete Fourier transform (DFT) size supported. The communication resource time intervals may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0042]

[0054] Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into several slots. Alternatively, each frame may include a variable number of slots, and the number of slots may depend on the subcarrier spacing. Each slot may include several symbol periods (e.g., depending on the length of a cyclic prefix prepended to each symbol period). In some wireless communications systems 100, a slot may be further divided into multiple minislots containing one or more symbols. Excluding the cyclic prefix, each symbol period may include one or more (e.g., N f A symbol period may include a sampling period of at least one symbol (symbol period). The duration of a symbol period may depend on the subcarrier spacing or the frequency operating band.

[0043]

[0055] A subframe, slot, minislot, or symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0044]

[0056] The physical channels may be multiplexed on the carriers according to various techniques. The physical control channels and the physical data channels may be multiplexed on the downlink carriers using, for example, one or more of a time division multiplexing (TDM), a frequency division multiplexing (FDM), or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for the physical control channel may be defined by a number of symbol periods and may span the system bandwidth of the carrier or a subset of the system bandwidth. One or more control regions (e.g., a CORESET) may be configured for a set of UEs 115. For example, one or more of the UEs 115 may monitor or search the control region for control information according to one or more search space sets, and each search space set may include one or more control channel candidates at one or more aggregation levels configured in a cascaded manner. The aggregation levels for the control channel candidates may refer to a number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for sending control information to multiple UEs 115 and a UE-specific search space set for sending control information to a particular UE 115.

[0045]

[0057] Each base station 105 may provide communication coverage via one or more cells, e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof. The term "cell" may refer to a logical communication entity used for communication with the base station 105 (e.g., on a carrier) and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other) to distinguish neighboring cells. In some examples, a cell may also refer to a geographic coverage area 110 or a portion (e.g., a sector) of a geographic coverage area 110 in which the logical communication entity operates. Such a cell may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area depending on various factors such as the capabilities of the base station 105. For example, a cell may be or include a building, a subset of a building, or an exterior space between or overlapping with the geographic coverage area 110, among other examples.

[0046]

[0058] A macro cell generally covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs 115 subscribing to the service of a network provider supporting the macro cell. A small cell may be associated with a lower power base station 105 compared to a macro cell, and the small cell may operate in the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to UEs 115 subscribing to the service of a network provider, or may provide restricted access to UEs 115 having an association with a small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with a user at home or in the office). A base station 105 may support one or more cells and may also support communication on one or more cells using one or more component carriers.

[0047]

[0059] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0048]

[0060] In some examples, the base stations 105 are mobile and may therefore provide communication coverage to moving geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may include heterogeneous networks in which different types of base stations 105 provide coverage to various geographic coverage areas 110, e.g., using the same or different radio access technologies.

[0049]

[0061] Some UEs 115, such as MTC devices or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technologies that allow devices to communicate with each other or with the base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that incorporate sensors or meters to measure or capture information and relay such information to a central server or application program that utilizes the information or presents the information to a human interacting with the application program. Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business billing.

[0050]

[0062] The wireless communication system 100 may be configured to support ultra-reliable or low-latency communications, or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communications (URLLC) or mission-critical communications. The UE 115 may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission-critical functions). Ultra-reliable communications may include private or group communications and may be supported by one or more mission-critical services, such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions may include service prioritization, and the mission-critical services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency may be used interchangeably herein.

[0051]

[0063] In some examples, the UE 115 may also be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within the geographic coverage area 110 of the base station 105. Other UEs 115 in such a group may be outside the geographic coverage area 110 of the base station 105 or otherwise unable to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system in which each UE 115 transmits to every other UE 115 in the group. In some examples, the base station 105 facilitates scheduling of resources for D2D communication. In other cases, D2D communication occurs between UEs 115 without the involvement of the base station 105.

[0052]

[0064] In some systems, the D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UE 115). In some examples, the vehicles may communicate using vehicle-to-anything (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination thereof. The vehicles may signal information regarding traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, the vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or a network via one or more network nodes (e.g., base stations 105) using vehicle-to-network (V2N) communication, or both.

[0053]

[0065] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) that may include at least one control plane entity (e.g., mobility management entity (MME), access and mobility management function (AMF)) that manages access and mobility, and at least one user plane entity (e.g., serving gateway (S-GW), packet data network (PDN) gateway (P-GW), or user plane function (UPF)) that routes packets or interconnection to external networks. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management, for UEs 115 served by base stations 105 associated with the core network 130. User IP packets may be forwarded through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to the network operator IP services 150. The operator IP services 150 may include access to the Internet, intranet(s), IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0054]

[0066] Some of the network devices, such as the base station 105, may include subcomponents, such as an access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with the UE 115 through one or more other access network transmitting entities 145, which may be referred to as a radio head, a smart radio head, or a transmit / receive point (TRP). Each access network transmitting entity 145 may include one or more antenna panels. In some configurations, various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or integrated into a single network device (e.g., the base station 105).

[0055]

[0067] The wireless communication system 100 may operate using one or more frequency bands typically within the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter in length. Although UHF waves may be blocked or redirected by buildings and environmental features, the waves may penetrate structures sufficiently for a macrocell to serve UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmissions using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0056]

[0068] The wireless communication system 100 may operate in the Super High Frequency (SHF) region, using a frequency band from 3 GHz to 30 GHz, also known as the centimeter band, or the Extremely High Frequency (EHF) region of the spectrum, also known as the millimeter band (e.g., from 30 GHz to 300 GHz). In some examples, the wireless communication system 100 may support mmW communications between the UE 115 and the base station 105, and the EHF antennas of the respective devices may be smaller and more closely spaced than the UHF antennas. In some examples, this may facilitate the use of antenna arrays within the devices. However, propagation of EHF transmissions may be subject to greater atmospheric attenuation and shorter distances than SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of bands across these frequency regions may vary by country or regulatory body.

[0057]

[0069] The wireless communication system 100 may utilize both licensed and unlicensed radio frequency spectrum bands. For example, the wireless communication system 100 may employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band, such as the 5 GHz Industrial, Scientific, and Medical (ISM) band. When operating in an unlicensed radio frequency spectrum band, devices such as the base station 105 and the UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation in an unlicensed band may be based on a carrier aggregation configuration with a component carrier operating in a licensed band (e.g., LAA). Operation in an unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.

[0058]

[0070] The base station 105 or UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located in one or more antenna arrays or antenna panels that may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located in an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with the base station 105 may be located in various geographic locations. The base station 105 may have an antenna array with several rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panels may support radio frequency beamforming for signals transmitted through the antenna ports.

[0059]

[0071] A base station 105 or a UE 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The multiple signals may be transmitted by a transmitting device via, for example, different antennas or different combinations of antennas. Similarly, the multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits related to the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurements and reporting. MIMO techniques include single-user MIMO (SU-MIMO), in which multiple spatial layers are transmitted to the same receiving device, and multi-user MIMO (MU-MIMO), in which multiple spatial layers are transmitted to multiple devices.

[0060]

[0072] Beamforming, sometimes referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting or receiving device (e.g., base station 105, UE 115) to shape or steer an antenna beam (e.g., transmit beam, receive beam) along a spatial path between the transmitting and receiving devices. Beamforming may be achieved by combining signals communicated through antenna elements of an antenna array such that some signals propagating in a particular orientation relative to the antenna array experience constructive interference and others experience destructive interference. Adjustment of signals communicated through antenna elements may include the transmitting or receiving device applying an amplitude offset, a phase offset, or both to signals conveyed through an antenna element associated with the device. The adjustment associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., relative to the transmitting or receiving device's antenna array or to some other orientation).

[0061]

[0073] The base station 105 or the UE 115 may use beam sweeping techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform a beamforming operation for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by the base station 105 in different directions. For example, the base station 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. The transmissions in various beam directions may be used to identify beam directions (e.g., by a transmitting device such as the base station 105 or by a receiving device such as the UE 115) for subsequent transmission or reception by the base station 105.

[0062]

[0074] Some signals, such as data signals associated with a particular receiving device, may be transmitted by the base station 105 in a single beam direction (e.g., a direction associated with a receiving device such as the UE 115). In some examples, the beam direction associated with a transmission along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, the UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions and report to the base station 105 an indication of the signal received by the UE 115 with the best signal quality or an otherwise acceptable signal quality.

[0063]

[0075] In some examples, transmission by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a composite beam for transmission (e.g., from the base station 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. The base station 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)), which may be precoded or amplicoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook). Although these techniques have been described with respect to signals transmitted in one or more directions by the base station 105, the UE 115 may employ similar techniques for transmitting a signal multiple times in different directions (e.g., to identify a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal in a single direction (e.g., to transmit data to a receiving device).

[0064]

[0076] A receiving device (e.g., UE 115) may attempt multiple receive configurations (e.g., directional listening) when receiving various signals from the base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, the receiving device may attempt multiple receive directions by receiving via different antenna subarrays, by processing the received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of the antenna array, or by processing the received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of the antenna array, any of which may be referred to as "listening" according to different receive configurations or receive directions. In some examples, the receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal). A single receive configuration may be aligned in a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening according to multiple beam directions).

[0065]

[0077] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based. A Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate over logical channels. A Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer may also use error detection, error correction, or both techniques to support retransmissions at the MAC layer to improve link efficiency. In the control plane, a Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between the UE 115 and the base station 105 or core network 130, which supports radio bearers for user plane data. In the physical layer, the transport channels may be mapped to physical channels.

[0066]

[0078] In some cases, one or more UEs 115 may perform self-interference measurements or crosslink interference measurements according to the techniques described herein. In some cases, the UE 115 may receive configuration information from the base station 105 indicating one or more SFI values ​​that are suitable for crosslink interference measurements or self-interference measurements. Based on the configured SFI(s), the UE 115 may measure interference in multiple symbols that may be used to estimate an amount of crosslink interference or self-interference, and the UE 115 may transmit a measurement report to the base station 105. In some cases, the UE 115 may indicate one or more SFIs that are suitable for communication based on the interference measurements. The base station 105 may identify one or more suitable SFIs for communication with one or more UEs 115 based on the measurement report, and may perform subsequent communication using the identified suitable SFIs. In some cases, the interference measurements may identify crosslink interference at the UE 115 resulting from transmissions of different UEs 115. In some cases, the interference measurements may identify self-interference of simultaneous communication of multiple channels at the same UE 115.

[0067]

[0079] FIG. 2 illustrates an example of a wireless communication system 200 supporting a method for self-interference measurement and crosslink interference measurement in the mmW band according to aspects of the disclosure. In some examples, the wireless communication system 200 may implement aspects of the wireless communication system 100. In this example, the wireless communication system 200 includes a first UE 115-a, a second UE 115-b, a first base station 105-a that may provide a serving cell to the first UE 115-a, and a second base station 105-b that may provide a serving cell to the second UE 115-b. Although illustrated separately, in some cases, the first base station 105-a and the second base station 105-b may be parts of the same base station (e.g., a radio head or antenna panel of a gNB). The UE 115 and the base station 105 may be examples of the UE 115 and the base station 105 described with reference to FIG. 1.

[0068]

[0080] The first base station 105-a may use a downlink beam 205 to transmit a downlink communication 210 to the first UE 115-a. Additionally, the second UE 115-b may use an uplink beam 215 to transmit an uplink communication 220 to the second base station 105-b. In other examples, the same UE 115 may both receive the downlink communication 210 and transmit the uplink communication 220, such as according to an intra-band or inter-band carrier aggregation technique or in a full duplex mode of operation. As described herein, in some cases, TDD may be used for communications between the base station 105 and the UE 115, and each UE 115 may be configured with one or several different available TDD slot formats, which may be indicated to the UE 115 in the SFI. In some cases, one or more symbols of the TDD format may provide uplink communication from the second UE 115-b to the second base station 105-b, and the same symbols provide downlink communication from the first base station 105-a to the first UE 115-a, which may cause crosslink interference 225 at the first UE 115-a. Similarly, if the first UE 115-a transmits uplink communication in a symbol during which the second UE 115-b receives downlink communication, the second UE 115-b may experience such crosslink interference 225. Furthermore, if the same UE 115 may communicate in different directions during one or more symbols, such UE 115 may generate self-interference between its own transmit and receive beams. As described herein, various techniques for measuring and reporting crosslink interference or self-interference. Figures 3-5 provide some examples of crosslink interference or self-interference and measurements of crosslink interference or self-interference.

[0069]

[0081] FIG. 3 illustrates an example of a configured slot format 300 supporting a method for self-interference and crosslink interference measurements in the mmW band according to aspects of the disclosure. In some examples, the configured slot format 300 may implement aspects of the wireless communication system 100 or 200. In this example, a first UE, or a first carrier of a first UE (e.g., UE 115 of FIG. 1 or FIG. 2) may be configured with a first SFI 305 (e.g., SFI 0) that provides a slot format with all downlink symbols. A second UE, or a second carrier of the first UE may be configured with a second SFI 310 (e.g., SFI 28) that provides a slot format with downlink symbols in symbols 0-11, a flexible symbol in symbol 12, and an uplink symbol in symbol 13.

[0070]

[0082] In some cases, measurements at the first UE may be configured according to the first SFI 305 and the second SFI 310 to enable inter-band self-interference measurements within the UE or crosslink interference measurements across the UE. Note that in this example, the same SCS is assumed and therefore the slot duration is the same. In some cases, the serving base station may configure the SFIs such that efficient self-interference or crosslink interference measurements may be made. In this example, the first set of symbols 315 across both the first SFI 305 and the second SFI 310 are downlink symbols, with a difference in the last two symbols of the slot, symbol 12 of the second SFI 310 is configured as a flexible / gap symbol 320 during which the first UE may measure downlink interference, and symbol 13 of the second SFI 310 is configured as an uplink symbol 325 during which the first UE may measure self-interference or crosslink interference. While the difference in symbols is shown in this example in the last two symbols of the slot, it should be understood that this example is provided merely for purposes of illustration and explanation and that techniques such as those described herein can be used with many different slot formats that can be coordinated across UEs such that one UE transmits and another UE has flexible / gap symbols for measurements.

[0071]

[0083] As shown, the first SFI 305 and the second SFI 310 may be configured in different UEs or in the same UE for the transmit / receive portion of the device (e.g., in inter-band carrier aggregation, such as frequency range FR2 / FR4 CA, or in full duplex operation). In this example, the second UE may be configured by the base station not to transmit on the flexible / gap symbol 320, and the first UE is configured to receive and measure downlink communication from the base station during the symbol 320. The second UE is then configured to transmit in the uplink symbol 325 during which the first UE may measure. Thus, the first UE may determine a differential measurement that may be used to estimate crosslink interference or self-interference at the UE. In some cases, the first UE may transmit a measurement report to the base station, and the base station may select one or more SFIs, beam pairs, or combinations thereof for subsequent communication at the first UE and the second UE (or different carriers of the first UE) that match the estimated interference based on the measurement at the first UE. In some cases, the first UE may provide an indication of one or more suitable SFIs based on the measurements, which may be selected at the base station for subsequent communications. In some cases, the downlink transmit beam for the first UE may be coordinated to be the same across symbols 320 and 325 to help provide measurement consistency (e.g., by using the same parameters across symbols). Furthermore, the power levels for use across symbols 320 and 325 may be configured to ensure good quality measurements that do not also interfere with other nodes in the network at the same time. Furthermore, in some cases, the SFI used for measurements at the first UE may be selected to provide a more accurate estimate of interference, such as by having the measuring UE measure during flexible symbols, as shown in FIG. 4.

[0072]

[0084] FIG. 4 illustrates an example of a configured slot format 400 supporting a method for self-interference and crosslink interference measurements in the mmW band according to aspects of the disclosure. In some examples, the configured slot format 400 may implement aspects of the wireless communication system 100 or 200. In this example, a first UE, or a first carrier of a first UE (e.g., UE 115 of FIG. 1 or FIG. 2) may be configured with a first SFI 405 (e.g., SFI3) that provides a slot format with downlink symbols in slots 0-12 and a flexible symbol in symbol 13. A second UE, or a second carrier of the first UE may be configured with a second SFI 410 (e.g., SFI28) that provides a slot format with downlink symbols in symbols 0-11, a flexible symbol in symbol 12, and an uplink symbol in symbol 13.

[0073]

[0085] In this example, inter-band self-interference within the UE or crosslink interference across the UE may be measured at the first UE based on the first SFI 405 and the second SFI 410. Again, this example assumes the same SCS for each SFI, and therefore the slot duration is the same. In this example, the first set of symbols 415 across both the first SFI 405 and the second SFI 410 are downlink symbols, with a difference being in the last two symbols of the slot, symbol 12 of the second SFI 410 is configured as a flexible / gap symbol 420 during which the first UE may measure downlink interference, and symbol 13 of the second SFI 410 is configured as an uplink symbol 425 for the second UE and as a flexible symbol during which the first UE may measure self-interference or crosslink interference.

[0074]

[0086] In this example, the second UE may be configured by the base station not to transmit on the flexible / gap symbol 420, and the first UE is configured to receive and measure downlink communications from the base station during the symbol 420. In the last symbol 425, the second UE, or the second carrier in the first UE, may be configured for uplink transmission, and the first UE, or the first carrier in the first UE, may be configured to receive and measure on the flexible symbol. Based on these two measurements, the first UE can determine the relative crosslink interference or self-interference. In this example, as in the example of FIG. 3, the beams may be coordinated to be the same across the measurement symbols to ensure consistency of the measurements, and the power levels may be appropriately configured to ensure good quality measurements that do not interfere with other nodes in the network.

[0075]

[0087] In some cases, the reliability in interference measurements may be used to determine how many symbols (e.g., measurement window length) are configured for measurements at the first UE, or for measurements at the second UE if the second UE also measures interference according to the configured SFI, regardless of whether the same SCS or different SCS is used for the two UEs or the two carriers. In some cases, the measurement window length may be band-specific, link-quality-specific, deployment-specific, or a combination thereof. A longer averaging measurement window may be required in some cases to filter out short-term fluctuations and noise, but incurs additional overhead of increased latency in interference estimation for cross-link interference and / or self-interference. In some cases, the base station may select the measurement window duration based on such factors.

[0076]

[0088] 5 illustrates an example of a configured slot format 500 supporting a method for self-interference and crosslink interference measurements in the mmW band according to aspects of the disclosure. In some examples, the configured slot format 500 may implement aspects of the wireless communication systems 100 or 200. In this example, a first UE, or a first carrier of a first UE (e.g., UE 115 of FIG. 1 or FIG. 2) may be configured with a first SFI 505 (e.g., SFI 3) that provides a slot format with downlink symbols in slots 0-12 and a flexible symbol in symbol 13.

[0077]

[0089] In the example of FIG. 5, the second UE, or the second carrier of the first UE, may be configured with a different SCS than the first UE, and therefore a different slot duration is used. In this example, the second UE or second carrier may have an SCS that provides two slots corresponding to the single slot of the first UE, including a first slot 515 configured with an SFI (e.g., SFI=0) with all downlink symbols, and a second slot 520 configured with an SFI (e.g., SFI=2) with all flexible symbols (e.g., the second UE / carrier may have an SCS of 240 kHz versus an SCS of 120 kHz for the first UE / carrier). The base station may configure an SFI across multiple slots based on a determination that crosslink interference measurements or self-interference measurements should be performed, so that one UE transmits and another UE has flexible / gap symbols for measurements for one or more symbols. Thus, in this example, the second UE / carrier may be configured to transmit in the last one or two symbols of the second slot 520. Furthermore, in some cases, the base station may configure the UE(s) such that interference measurements related to the second UE or the second carrier of the first UE may be performed. For example, in symbol 12 of the first UE / carrier, the second UE / carrier may be configured for downlink and uplink symbols of two corresponding symbols in the second UE / carrier, and the first UE may measure the relative interference to estimate the crosslink interference or self-interference present from the second UE or second carrier. The first UE / carrier in symbol 13 may transmit an uplink communication, and then the second UE, or the second carrier in the first UE, may measure to determine the crosslink interference or self-interference from the first UE / carrier. Thus, in such a case, the crosslink interference or self-interference may be measured in both the first UE / carrier and the second UE / carrier.Additionally, the reliability in the interference measurements may be used to determine how many symbols should be included in the measurement window length for measurements at either UE, regardless of whether the same or different SCSs are used for the two UEs or carriers at the same UE. In some cases, the measurement window length may be band-specific, link quality-specific, deployment-specific, or a combination thereof, similar to those described with respect to Figures 3 and 4.

[0078]

[0090] FIG. 6 illustrates an example of a process flow 600 supporting a method for self-interference measurement and crosslink interference measurement in the mmW band according to aspects of the disclosure. In some examples, the process flow 600 may implement aspects of the wireless communication system 100 or 200. The process flow 600 may be implemented by a first UE 115-c, a second UE 115-d, and a base station 105-b, which may be examples of the UE 115 and base station 105 described herein. Alternative examples of the following may be implemented, with some steps being performed in a different order than described or not performed at all. In some cases, the steps may include additional features not mentioned below, or further steps may be added.

[0079]

[0091] At 605, the first UE 115-c may optionally transmit an interference measurement request to the base station 105-b. At 610, the second UE 115-d may optionally transmit an interference measurement request to the base station 105-b. In some cases, the determination that interference measurement is needed may be based on, for example, a decoding error rate above a threshold, intermittent decoding errors, detection of increased interference in some symbols or slots, or a combination thereof. The interference measurement request may be transmitted to the base station 105-b in RRC signaling, in MAC-CE, in uplink control information (UCI), or any combination thereof.

[0080]

[0092] At 615, the base station 105-b may select an SFI for the first UE 115-c and the second UE 115-d, where the SFI may be selected to accommodate interference measurements at one or both of the first UE 115-c or the second UE 115-d. In some cases, the SFI may be selected to provide, for example, that the first UE 115-c is configured with a downlink symbol or a flexible / gap symbol for one or more symbols in a slot that may include the first symbol. The first UE 115-c, in such a case, may be configured by the SFI configuration to measure an interference level associated with normal downlink communication from the base station 105-b in the first symbol (and optionally one or more other symbols based on the measurement window) and may be configured by the SFI configuration to measure crosslink interference or self-interference in at least the second symbol (e.g., a downlink symbol, or a symbol configured as a flexible / gap symbol). The second UE 115-d may also be configured with an SFI configuration to refrain from transmitting during at least a first symbol and to perform uplink transmission during at least a second symbol to enable crosslink interference measurements or self-interference measurements. At 620, the base station 105-b may transmit an SFI configuration for the first UE 115-c. At 625, the base station 105-b may transmit an SFI configuration for the second UE 115-d. The SFI may be transmitted in downlink control information (DCI), in MAC-CE, in RRC signaling, or any combination thereof to each UE 115, in some cases.

[0081]

[0093] At 630, the first UE 115-c may determine an SFI for the upcoming slot, identify one or more symbols (e.g., a first symbol, and optionally one or more other symbols) for downlink interference measurements, and identify one or more symbols (e.g., a second symbol, and optionally one or more other symbols) for crosslink interference measurements. Similarly, at 635, the second UE 115-d may determine an SFI for the upcoming slot, identify one or more symbols (e.g., at least a first symbol) during which a transmission is not configured, and identify one or more symbols (e.g., at least a second symbol) during which the second UE 115-d should transmit an uplink communication. Furthermore, in some cases, the second UE 115-d may be configured to perform measurements on one or more symbols, thus enabling both the first UE 115-c and the second UE 115-d to determine an estimate of crosslink interference or self-interference as described with reference to FIG. 5.

[0082]

[0094] At 640, the base station 105-b may transmit a downlink transmission to the first UE 115-c according to the SFI configured in the first UE 115-c. Simultaneously, at 645, the base station 105-b may transmit a downlink transmission to the second UE 115-d according to the SFI configured in the second UE 115-d. At 650, the first UE 115-c may measure downlink interference in one or more configured downlink measurement symbols.

[0083]

[0095] At 655, the second UE 115-d may transmit an uplink transmission in one or more symbols according to a configured SFI at the second UE 115-d. At 660, the first UE 115-c may measure crosslink interference in one or more configured downlink or flexible / gap measurement symbols corresponding to symbols used by the second UE 115-d for uplink communication.

[0084]

[0096] At 665, the first UE 115-c may format a measurement report based on the downlink interference measurements and the crosslink interference measurements or the self-interference measurements. In some cases, the measurement report may also provide an indication of one or more SFIs that the first UE 115-c may identify as compatible for simultaneous communication with both the first UE 115-c and the second UE 115-d. At 670, the first UE 115-c may transmit the measurement report to the base station 105-b. At 675, the base station 105-b may identify compatible SFIs for both the first UE 115-c and the second UE 115-d and may identify compatible beam pairs for simultaneous communication with the first UE 115-c and the second UE 115-d. The identified SFIs and beam pairs may then be used for subsequent communication of the first UE 115-c, the second UE 115-d, and the base station 105-b.

[0085]

[0097] 7 illustrates a block diagram 700 of a device 705 supporting a method for self-interference and crosslink interference measurements in the mmW band according to an embodiment of the disclosure. The device 705 may be an example of an embodiment of a UE 115 described herein. The device 705 may include a receiver 710, a communications manager 715, and a transmitter 720. The device 705 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0086]

[0098] The receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., information related to control channels, data channels, and methods for self-interference measurements and crosslink interference measurements in the mmW band, etc.). The information may be passed on to other components of the device 705. The receiver 710 may be an example of an aspect of the transceiver 1020 described with reference to FIG. 10. The receiver 710 may utilize a single antenna or a set of antennas.

[0087]

[0099] The communications manager 715 may receive configuration information from a base station indicating a first SFI for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI, determine a first interference estimate based on a first interference measurement during the first measurement symbol, determine a second interference estimate based on a second interference measurement during the second measurement symbol, and send a measurement report to the base station providing one or more of the first interference measurement, the second interference measurement, an indication of a set of compatible SFIs based on the first interference estimate and the second interference estimate, or any combination thereof.

[0088]

[0100] The communications manager 715 may also receive configuration information from the base station indicating a first SFI for communication over the first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI, and transmit a measurement report to the base station providing one or more of a first interference measurement, a second interference measurement, an indication of a set of matching SFIs based on the first interference estimate and the second interference estimate, or any combination thereof, where the first interference estimate is based on the first interference measurement during the first measurement symbol and the second interference estimate is based on the second interference measurement during the second measurement symbol. The communications manager 715 may be an example of an aspect of the communications manager 1010 described herein.

[0089]

[0101] The communications manager 715 may be implemented to realize one or more potential advantages as described herein. One implementation may enable the device 705 to reliably determine cross-link interference, self-interference, or a combination thereof, and report the determined interference to a base station, which may enable enhanced reliability and reduced latency for communications based on interference mitigation or interference avoidance. Additionally, implementations may enable the device 705 to initiate interference measurement procedures based on detected channel conditions, which may further provide reduced latency for communications and increase signaling reliability, throughput, and user experience, among other advantages.

[0090]

[0102] Communications manager 715, or subcomponents thereof, may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of communications manager 715, or subcomponents thereof, may be performed by a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in this disclosure.

[0091]

[0103] The communications manager 715, or subcomponents thereof, may be physically located in various locations, including being distributed such that portions of the functionality are implemented at different physical locations by one or more physical components. In some examples, the communications manager 715, or subcomponents thereof, may be separate and distinct components according to various aspects of the present disclosure. In some examples, the communications manager 715, or subcomponents thereof, may be combined with one or more other hardware components, including, but not limited to, an input / output (I / O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or combinations thereof according to various aspects of the present disclosure.

[0092]

[0104] The transmitter 720 may transmit signals generated by other components of the device 705. In some examples, the transmitter 720 may be co-located with the receiver 710 in a transceiver module. For example, the transmitter 720 may be an example of an aspect of the transceiver 1020 described with reference to FIG. 10. The transmitter 720 may utilize a single antenna or a set of antennas.

[0093]

[0105] 8 illustrates a block diagram 800 of a device 805 supporting a method for self-interference and crosslink interference measurements in the mmW band according to an embodiment of the disclosure. The device 805 may be an example of an embodiment of a device 705 or a UE 115 described herein. The device 805 may include a receiver 810, a communications manager 815, and a transmitter 835. The device 805 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0094]

[0106] The receiver 810 may receive information such as packets, user data, or control information associated with various information channels (e.g., information related to control channels, data channels, and methods for self-interference measurements and crosslink interference measurements in the mmW band, etc.). The information may be passed on to other components of the device 805. The receiver 810 may be an example of an aspect of the transceiver 1020 described with reference to FIG. 10. The receiver 810 may utilize a single antenna or a set of antennas.

[0095]

[0107] Communications manager 815 may be an example of an aspect of communications manager 715 described herein. Communications manager 815 may include a configuration manager 820, a measurement manager 825, and a measurement reporting manager 830. Communications manager 815 may be an example of an aspect of communications manager 1010 described herein.

[0096]

[0108] The configuration manager 820 may receive configuration information from a base station indicating a first SFI for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI.

[0097]

[0109] The measurement manager 825 may determine a first interference estimate based on a first interference measurement during the first measurement symbol and may determine a second interference estimate based on a second interference measurement during the second measurement symbol.

[0098]

[0110] The measurement report manager 830 may send to the base station a measurement report providing one or more of the first interference measurement, the second interference measurement, an indication of a set of compatible SFIs based on the first interference estimate and the second interference estimate, or any combination thereof.

[0099]

[0111] The configuration manager 820 may also receive configuration information from the base station indicating a first SFI for communication over the first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI. The measurement report manager 830 may also send to the base station a measurement report providing one or more of the first interference measurement, the second interference measurement, an indication of a set of compatible SFIs based on the first interference estimate and the second interference estimate, or any combination thereof, where the first interference estimate is based on the first interference measurement during the first measurement symbol and the second interference estimate is based on the second interference measurement during the second measurement symbol.

[0100]

[0112] The transmitter 835 may transmit signals generated by other components of the device 805. In some examples, the transmitter 835 may be co-located with the receiver 810 in a transceiver module. For example, the transmitter 835 may be an example of an aspect of the transceiver 1020 described with reference to FIG. 10. The transmitter 835 may utilize a single antenna or a set of antennas.

[0101]

[0113] 9 illustrates a block diagram 900 of a communications manager 905 supporting a method for self-interference and cross-link interference measurements in the mmW band according to an embodiment of the disclosure. The communications manager 905 may be an example of an embodiment of the communications manager 715, communications manager 815, or communications manager 1010 described herein. The communications manager 905 may include a configuration manager 910, a measurement manager 915, a measurement report manager 920, an SFI manager 925, and a beam manager 930. Each of these modules may communicate with one another directly or indirectly (e.g., via one or more buses).

[0102]

[0114] The configuration manager 910 may receive configuration information from the base station indicating a first SFI for communication over the first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI. In some examples, the configuration manager 910 may receive further configuration information from the base station configuring either uplink transmission or downlink reception in the first measurement symbol or the second measurement symbol via flexible or gap symbol reconfiguration.

[0103]

[0115] In some cases, the first measurement symbol is configured to be a downlink symbol for receiving information at the second UE from the base station during the first measurement symbol, and in some cases, the second measurement symbol is configured for uplink transmission at the first UE and is configured to be a downlink symbol for receiving information at the second UE from the base station.

[0104]

[0116] The measurement manager 915 may determine a first interference estimate based on the first interference measurement during the first measurement symbol. In some examples, the measurement manager 915 may determine a second interference estimate based on the second interference measurement during the second measurement symbol. The measurement report manager 920 may send to the base station a measurement report providing one or more of the first interference measurement, the second interference measurement, an indication of a set of matching SFIs based on the first interference estimate and the second interference estimate, or any combination thereof. In some examples, the measurement report indicates a crosslink interference measurement of the UE based on a measurement difference between the first measurement symbol and the second measurement symbol.

[0105]

[0117] In some examples, the measurement report manager 920 may send a request to the base station to perform interference measurements for one or more slot formats, where the configuration information is received in response to the request. In some cases, the measurement report indicates interference from simultaneous transmissions from the first UE and the base station during the second measurement symbol relative to a baseline case of downlink reception from only the base station during the first measurement symbol. In some cases, the measurement report indicates one or more of a set of SFIs compatible with communication with the second UE, a set of beam pairs compatible with communication with the second UE, or any combination thereof. In some cases, the interference estimation quality is a band-specific estimation quality, a bandwidth portion-specific estimation quality, or a link-specific estimation quality.

[0106]

[0118] The SFI manager 925 may identify and configure the SFI. In some cases, the number of symbols or slots for which the first SFI is configured for crosslink measurements is based on the SCS of the second UE. In some cases, the number of symbols or slots for which the first SFI is configured for crosslink measurements is based on an interference estimation quality associated with a measurement report.

[0107]

[0119] The beam manager 930 may receive beamforming parameters of the second UE configured to be consistent at least during the first measurement symbol and during the second measurement symbol.

[0108]

[0120] In some examples, the configuration manager 910 may receive configuration information from the base station indicating a first SFI for communication over the first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI. In some examples, the measurement report manager 920 transmits to the base station a measurement report providing one or more of a first interference measurement, a second interference measurement, an indication of a set of compatible SFIs based on the first interference estimate and the second interference estimate, or any combination thereof, where the first interference estimate is based on the first interference measurement during the first measurement symbol and the second interference estimate is based on the second interference measurement during the second measurement symbol.

[0109]

[0121] 10 illustrates a diagram of a system 1000 including a device 1005 supporting a method for self-interference and crosslink interference measurements in the mmW band according to an embodiment of the disclosure. The device 1005 may be an example of or include components of a device 705, a device 805, or a UE 115 described herein. The device 1005 may include components for two-way voice and data communications, including components for transmitting and receiving communications, including a communications manager 1010, an I / O controller 1015, a transceiver 1020, an antenna 1025, a memory 1030, and a processor 1040. These components may be in electronic communication via one or more buses (e.g., bus 1045).

[0110]

[0122] The communications manager 1010 may receive configuration information from a base station indicating a first SFI for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI, determine a first interference estimate based on a first interference measurement during the first measurement symbol, determine a second interference estimate based on a second interference measurement during the second measurement symbol, and send a measurement report to the base station providing one or more of the first interference measurement, the second interference measurement, an indication of a set of compatible SFIs based on the first interference estimate and the second interference estimate, or any combination thereof.

[0111]

[0123] The communications manager 1010 may also receive configuration information from the base station indicating a first SFI for communication over the first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI, and transmit a measurement report to the base station providing one or more of a first interference measurement, a second interference measurement, an indication of a set of compatible SFIs based on the first interference estimate and the second interference estimate, or any combination thereof, where the first interference estimate is based on the first interference measurement during the first measurement symbol and the second interference estimate is based on the second interference measurement during the second measurement symbol.

[0112]

[0124] The communications manager 1010 may be implemented to realize one or more potential advantages as described herein. One implementation may enable the device 1005 to reliably determine cross-link interference, self-interference, or a combination thereof, and select a matching SFI and beam pair link for communication with one or more UEs, which may enable enhanced reliability and reduced latency for communications based on interference mitigation or avoidance.

[0113]

[0125] The I / O controller 1015 may manage input and output signals for the device 1005. The I / O controller 1015 may also manage peripherals that are not built into the device 1005. In some cases, the I / O controller 1015 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 1015 may utilize an operating system, such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or another known operating system. In other cases, the I / O controller 1015 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, the I / O controller 1015 may be implemented as part of a processor. In some cases, a user may interact with the device 1005 through the I / O controller 1015 or through hardware components controlled by the I / O controller 1015.

[0114]

[0126] The transceiver 1020 may communicate bidirectionally via one or more antennas, wired links, or wireless links, as described above. For example, the transceiver 1020 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1020 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and for demodulating packets received from the antenna.

[0115]

[0127] In some cases, a wireless device may include a single antenna 1025. However, in some cases, the device may have two or more antennas 1025 that may be capable of simultaneously transmitting or receiving multiple wireless transmissions.

[0116]

[0128] The memory 1030 may include random access memory (RAM) and read only memory (ROM). The memory 1030 may store computer-readable, computer-executable code 1035 that includes instructions that, when executed, cause the processor to perform various functions described herein. In some cases, the memory 1030 may include a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0117]

[0129] The processor 1040 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 1040 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be incorporated into the processor 1040. The processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1030) to cause the device 1005 to perform various functions (e.g., functions or tasks supporting methods for self-interference measurements and cross-link interference measurements in the mmW band).

[0118]

[0130] The code 1035 may include instructions for implementing aspects of the disclosure, including instructions for supporting wireless communication. The code 1035 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 1035 may not be directly executable by the processor 1040, but may (e.g., when compiled and executed) cause a computer to perform functions described herein.

[0119]

[0131] 11 illustrates a block diagram 1100 of a device 1105 supporting a method for self-interference and crosslink interference measurements in the mmW band according to an embodiment of the disclosure. The device 1105 may be an example of an embodiment of a base station 105 described herein. The device 1105 may include a receiver 1110, a communications manager 1115, and a transmitter 1120. The device 1105 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0120]

[0132] The receiver 1110 may receive information such as packets, user data, or control information associated with various information channels (e.g., information related to control channels, data channels, and methods for self-interference measurements and crosslink interference measurements in the mmW band, etc.). The information may be passed on to other components of the device 1105. The receiver 1110 may be an example of an aspect of the transceiver 1420 described with reference to FIG. 14. The receiver 1110 may utilize a single antenna or a set of antennas.

[0121]

[0133] The communications manager 1115 may select a first SFI for communication with the first UE over a first carrier and a second SFI for communication with the second UE over a second carrier, where the first SFI and the second SFI are selected based on suitability at one or more of the first UE or the second UE for measuring interference between the first UE and the second UE, configure a first slot format at the first UE with the first SFI and configure a second slot format at the second UE with the second SFI, receive a measurement report for one or more of the first UE or the second UE, where the measurement report indicates one or more interference measurements according to the first SFI or the second SFI. The communications manager 1115 may be an example of an aspect of the communications manager 1410 described herein.

[0122]

[0134] The communications manager 1115, or subcomponents thereof, may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 1115, or subcomponents thereof, may be performed by a general purpose processor, a DSP, an ASIC, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in this disclosure.

[0123]

[0135] The communications manager 1115, or subcomponents thereof, may be physically located in various locations, including being distributed such that portions of the functionality are implemented at different physical locations by one or more physical components. In some examples, the communications manager 1115, or subcomponents thereof, may be separate and distinct components according to various aspects of the present disclosure. In some examples, the communications manager 1115, or subcomponents thereof, may be combined with one or more other hardware components, including, but not limited to, an I / O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or combinations thereof according to various aspects of the present disclosure.

[0124]

[0136] The transmitter 1120 may transmit signals generated by other components of the device 1105. In some examples, the transmitter 1120 may be co-located with the receiver 1110 in a transceiver module. For example, the transmitter 1120 may be an example of an aspect of the transceiver 1420 described with reference to FIG. 14. The transmitter 1120 may utilize a single antenna or a set of antennas.

[0125]

[0137] 12 illustrates a block diagram 1200 of a device 1205 supporting a method for self-interference and crosslink interference measurements in the mmW band according to an embodiment of the disclosure. The device 1205 may be an example of an embodiment of a device 1105 or a base station 105 described herein. The device 1205 may include a receiver 1210, a communications manager 1215, and a transmitter 1235. The device 1205 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0126]

[0138] The receiver 1210 may receive information such as packets, user data, or control information associated with various information channels (e.g., information related to control channels, data channels, and methods for self-interference measurements and crosslink interference measurements in the mmW band, etc.). The information may be passed to other components of the device 1205. The receiver 1210 may be an example of an aspect of the transceiver 1420 described with reference to FIG. 14. The receiver 1210 may utilize a single antenna or a set of antennas.

[0127]

[0139] Communications manager 1215 may be an example of an aspect of communications manager 1115 described herein. Communications manager 1215 may include an SFI manager 1220, a configuration manager 1225, and a measurement reporting manager 1230. Communications manager 1215 may be an example of an aspect of communications manager 1410 described herein.

[0128]

[0140] The SFI manager 1220 may select a first SFI for communication with a first UE via a first carrier and a second SFI for communication with a second UE via a second carrier, where the first SFI and the second SFI are selected based on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE.

[0129]

[0141] The configuration manager 1225 may configure a first slot format in a first UE with a first SFI and configure a second slot format in a second UE with a second SFI.

[0130]

[0142] The measurement report manager 1230 may receive a measurement report for one or more of the first UE or the second UE, where the measurement report indicates one or more interference measurements according to the first SFI or the second SFI.

[0131]

[0143] The transmitter 1235 may transmit signals generated by other components of the device 1205. In some examples, the transmitter 1235 may be co-located with the receiver 1210 in a transceiver module. For example, the transmitter 1235 may be an example of an aspect of the transceiver 1420 described with reference to FIG. 14. The transmitter 1235 may utilize a single antenna or a set of antennas.

[0132]

[0144] 13 illustrates a block diagram 1300 of a communications manager 1305 supporting a method for self-interference and cross-link interference measurements in the mmW band according to an aspect of the disclosure. The communications manager 1305 may be an example of an aspect of the communications manager 1115, the communications manager 1215, or the communications manager 1410 described herein. The communications manager 1305 may include an SFI manager 1310, a configuration manager 1315, a measurement reporting manager 1320, a power level manager 1325, and a beam manager 1330. Each of these modules may communicate with one another directly or indirectly (e.g., via one or more buses).

[0133]

[0145] The SFI manager 1310 may select a first SFI for communication with the first UE over the first carrier and a second SFI for communication with the second UE over the second carrier, where the first SFI and the second SFI are selected based on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE. In some cases, the first symbol of each of the first SFI and the second SFI is configured to be a downlink symbol, where each of the first UE and the second UE receives information from the base station during the first symbol. In some cases, the second symbol of the first UE is configured for uplink transmission from the first UE and the second UE is configured for downlink reception during the second symbol.

[0134]

[0146] The configuration manager 1315 may configure a first slot format in the first UE with a first SFI and a second slot format in the second UE with a second SFI. In some examples, the configuration manager 1315 may configure either uplink transmission or downlink reception in the first symbol or the second symbol in the first UE or the second UE via flexible or gap symbol reconfiguration. In some cases, the second UE is configured to measure interference from simultaneous transmissions from the first UE and the base station during the second symbol relative to a baseline case of downlink reception from only the base station during the first symbol.

[0135]

[0147] In some cases, the number of symbols or slots in which the first SFI and the second SFI are configured for crosslink interference measurement is based on the SCS of the first UE or the second UE. In some cases, the number of symbols or slots in which the first SFI and the second SFI are configured for crosslink interference measurement is based on an interference estimation quality associated with a measurement report. In some cases, the interference estimation quality is a band-specific estimation quality, a bandwidth portion specific estimation quality, or a link-specific estimation quality. In some cases, the first UE and the second UE are the same UE, where the first carrier uses a first frequency band and the second carrier uses a second frequency band different from the first frequency band.

[0136]

[0148] The measurement report manager 1320 may receive a measurement report for one or more of the first UE or the second UE, where the measurement report indicates one or more interference measurements according to the first SFI or the second SFI. In some examples, the measurement report indicates a crosslink interference measurement of the first UE based on a measurement difference between the first symbol and the second symbol. In some examples, the measurement report manager 1320 may receive a request from one or more of the first UE or the second UE to perform an interference measurement for one or more SFIs, where the selecting and configuring are performed in response to the request. In some cases, the measurement report is received from the second UE and provides one or more of an indication of a set of matching SFIs based on the interference measurement at the second UE, a first interference estimate associated with a first symbol of a slot during which the first UE does not transmit, a second interference estimate associated with a second symbol of a slot during which the first UE transmits uplink communications, or any combination thereof.

[0137]

[0149] The power level manager 1325 may set power levels for the measurement symbols such that consistent interference measurements are provided. In some cases, the power level at the first UE is configured based on the first SFI being selected for suitability for measuring interference between the first UE and the second UE.

[0138]

[0150] The beam manager 1330 may identify beam pairs and beamforming parameters for the first UE and the second UE to provide consistent transmission during at least a portion of the first SFI and a portion of the second SFI that should be used to measure crosslink interference between the first UE and the second UE.

[0139]

[0151] 14 illustrates a diagram of a system 1400 including a device 1405 supporting a method for self-interference measurement and cross-link interference measurement in the mmW band according to an embodiment of the disclosure. The device 1405 may be an example of or include components of the device 1105, device 1205, or base station 105 described herein. The device 1405 may include components for two-way voice and data communication, including components for transmitting and receiving communications, including a communications manager 1410, a network communications manager 1415, a transceiver 1420, an antenna 1425, a memory 1430, a processor 1440, and an inter-station communications manager 1445. These components may be in electronic communication via one or more buses (e.g., a bus 1450).

[0140]

[0152] The communications manager 1410 may select a first SFI for communication with a first UE via a first carrier and a second SFI for communication with a second UE via a second carrier, where the first SFI and the second SFI are selected based on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE, configure a first slot format at the first UE with the first SFI and configure a second slot format at the second UE with the second SFI, receive a measurement report for one or more of the first UE or the second UE, where the measurement report indicates one or more interference measurements according to the first SFI or the second SFI.

[0141]

[0153] The network communications manager 1415 may manage communications with a core network (e.g., via one or more wired backhaul links). For example, the network communications manager 1415 may manage the transfer of data communications for client devices, such as one or more UEs 115.

[0142]

[0154] The transceiver 1420 may communicate bidirectionally via one or more antennas, wired links, or wireless links, as described above. For example, the transceiver 1420 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1420 may also include a modem for modulating packets and providing the modulated packets to an antenna for transmission, and for demodulating packets received from the antenna.

[0143]

[0155] In some cases, a wireless device may include a single antenna 1425. However, in some cases, the device may have two or more antennas 1425 that may be capable of simultaneously transmitting or receiving multiple wireless transmissions.

[0144]

[0156] The memory 1430 may include RAM, ROM, or a combination thereof. The memory 1430 may store computer-readable code 1435 including instructions that, when executed by a processor (e.g., the processor 1440), cause the device to perform various functions described herein. In some cases, the memory 1430 may include a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0145]

[0157] The processor 1440 may include intelligent hardware devices (e.g., general purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, the processor 1440 may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be incorporated into the processor 1440. The processor 1440 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1430) to cause the device 1405 to perform various functions (e.g., functions or tasks supporting methods for self-interference measurements and cross-link interference measurements in the mmW band).

[0146]

[0158] The inter-station communications manager 1445 may manage communications with other base stations 105 and may include a controller or scheduler for controlling communications with the UE 115 in cooperation with the other base stations 105. For example, the inter-station communications manager 1445 may coordinate scheduling for transmissions to the UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, the inter-station communications manager 1445 may provide an X2 interface within the LTE / LTE-A wireless communications network technology to communicate between the base stations 105.

[0147]

[0159] The code 1435 may include instructions for implementing aspects of the disclosure, including instructions for supporting wireless communication. The code 1435 may be stored in a non-transitory computer-readable medium, such as a system memory or other type of memory. In some cases, the code 1435 may not be directly executable by the processor 1440, but may (e.g., when compiled and executed) cause a computer to perform functions described herein.

[0148]

[0160] FIG. 15 illustrates a flow chart illustrating a method 1500 supporting a method for self-interference measurement and crosslink interference measurement in the mmW band according to an aspect of the disclosure. The operations of the method 1500 may be implemented by the base station 105 described herein or components thereof. For example, the operations of the method 1500 may be performed by a communications manager as described with reference to FIGS. 11-14. In some examples, the base station may execute a set of instructions to control functional elements of the base station to perform functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the functions described below.

[0149]

[0161] Optionally, at 1505, the base station may receive a request from one or more of the first UE or the second UE to perform interference measurements for one or more SFIs. The operations of 1505 may be performed according to methods described herein. In some examples, aspects of the operations of 1505 may be performed by a measurement report manager as described with reference to FIGS. 11-14.

[0150]

[0162] At 1510, the base station may select a first SFI for communication with the first UE over the first carrier and a second SFI for communication with the second UE over the second carrier, where the first SFI and the second SFI are selected based on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE. The operations of 1510 may be performed according to methods described herein. In some examples, aspects of the operations of 1510 may be performed by an SFI manager, as described with reference to FIGS. 11-14. In some examples, the selecting is performed in response to a request.

[0151]

[0163] At 1515, the base station may configure a first slot format in the first UE with the first SFI and configure a second slot format in the second UE with the second SFI. The operations of 1515 may be performed according to methods described herein. In some examples, aspects of the operations of 1515 may be performed by a configuration manager, as described with reference to FIGS. 11-14. In some examples, the configuring is performed in response to a request.

[0152]

[0164] At 1520, the base station may receive a measurement report for one or more of the first UE or the second UE, the measurement report indicating one or more interference measurements according to the first SFI or the second SFI. The operations of 1520 may be performed according to methods described herein. In some examples, aspects of the operations of 1520 may be performed by a measurement report manager, as described with reference to FIGS. 11-14.

[0153]

[0165] FIG. 16 illustrates a flow chart illustrating a method 1600 supporting a method for self-interference measurement and crosslink interference measurement in the mmW band according to an aspect of the disclosure. The operations of the method 1600 may be implemented by the base station 105 described herein or components thereof. For example, the operations of the method 1600 may be performed by a communications manager as described with reference to FIGS. 11-14. In some examples, the base station may execute a set of instructions to control functional elements of the base station to perform functions described below. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the functions described below.

[0154]

[0166] At 1605, the base station may select a first SFI for communication with the first UE over the first carrier and a second SFI for communication with the second UE over the second carrier, where the first SFI and the second SFI are selected based on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE. The operations of 1605 may be performed according to methods described herein. In some examples, aspects of the operations of 1605 may be performed by an SFI manager as described with reference to FIGS. 11-14.

[0155]

[0167] At 1610, the base station may configure a first slot format in the first UE with a first SFI and a second slot format in the second UE with a second SFI. The operations of 1610 may be performed according to methods described herein. In some examples, aspects of the operations of 1610 may be performed by a configuration manager as described with reference to Figures 11-14. In some cases, a first symbol of each of the first SFI and the second SFI is configured to be a downlink symbol, with each of the first UE and the second UE receiving information from the base station during the first symbol. In some cases, the second symbol of the first UE is configured for uplink transmission from the first UE and the second UE is configured for downlink reception during the second symbol.

[0156]

[0168] At 1615, the base station may configure the second UE to measure interference from simultaneous transmissions from the first UE and the base station during the second symbol relative to a baseline case of downlink reception from only the base station during the first symbol. The operations of 1615 may be performed according to methods described herein. In some examples, aspects of the operations of 1615 may be performed by a configuration manager, as described with reference to FIGS. 11-14.

[0157]

[0169] At 1620, the base station may configure either uplink transmission or downlink reception during the first symbol or the second symbol at the first UE or the second UE via flexible or gap symbol reconfiguration. The operations of 1620 may be performed according to methods described herein. In some examples, aspects of the operations of 1620 may be performed by a configuration manager, as described with reference to FIGS. 11-14.

[0158]

[0170] At 1625, the base station may receive a measurement report for one or more of the first UE or the second UE, the measurement report indicating one or more interference measurements according to the first SFI or the second SFI. The operations of 1625 may be performed according to methods described herein. In some examples, aspects of the operations of 1625 may be performed by a measurement report manager as described with reference to Figures 11-14. In some cases, the measurement report indicates a crosslink interference measurement of the first UE based on a measurement difference between the first symbol and the second symbol.

[0159]

[0171] FIG. 17 illustrates a flow chart illustrating a method 1700 supporting a method for self-interference measurement and crosslink interference measurement in the mmW band according to an aspect of the disclosure. The operations of the method 1700 may be implemented by the UE 115 or components thereof as described herein. For example, the operations of the method 1700 may be performed by a communications manager as described with reference to FIGS. 7-10. In some examples, the UE may execute a set of instructions to control functional elements of the UE to perform functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0160]

[0172] Optionally, at 1705, the UE may transmit a request to the base station to perform interference measurements for one or more slot formats. The operations of 1705 may be performed according to methods described herein. In some examples, aspects of the operations of 1705 may be performed by a measurement report manager, as described with reference to FIGS. 7-10.

[0161]

[0173] At 1710, the UE may receive configuration information from the base station indicating a first SFI for communication over the first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI. The operations of 1710 may be performed in accordance with methods described herein. In some examples, aspects of the operations of 1710 may be performed by a configuration manager, as described with reference to FIGS. 7-10. In some examples, the configuration information is received in response to a request.

[0162]

[0174] At 1715, the UE may transmit to the base station a measurement report providing one or more of the first interference measurement, the second interference measurement, an indication of a set of compatible SFIs based on the first interference estimate and the second interference estimate, or any combination thereof, where the first interference estimate is based on the first interference measurement during the first measurement symbol and the second interference estimate is based on the second interference measurement during the second measurement symbol. The operations of 1715 may be performed according to methods described herein. In some examples, aspects of the operations of 1715 may be performed by a measurement report manager as described with reference to FIGS. 7-10.

[0163]

[0175] It should be noted that the methods described herein represent possible implementations, and that the acts and steps may be rearranged or possibly modified, and that other implementations are possible. Furthermore, aspects from two or more of the methods may be combined.

[0164]

[0176] The following provides an overview of aspects of the disclosure.

[0165]

[0177] Aspect 1: A method for wireless communication in a base station, comprising: selecting a first SFI for communication with a first UE via a first carrier and a second SFI for communication with a second UE via a second carrier, where the first SFI and the second SFI are selected based at least in part on suitability for measuring interference between the first UE and the second UE, at one or more of the first UE or the second UE; configuring a first slot format at the first UE with the first SFI and configuring a second slot format at the second UE with the second SFI; receiving a measurement report for the one or more of the first UE or the second UE, where the measurement report indicates one or more interference measurements in accordance with the first SFI or the second SFI.

[0166]

[0178] Aspect 2: The method of aspect 1, wherein a first symbol of each of the first SFI and the second SFI is configured to be a downlink symbol, with the first UE and the second UE each receiving information from a base station during the first symbol; a second symbol of the first UE is configured for uplink transmission from the first UE and the second UE is configured for downlink reception during the second symbol; and the second UE is configured to measure interference from simultaneous transmissions from the first UE and the base station during the second symbol relative to a baseline case of downlink reception from only the base station during the first symbol.

[0167]

[0179] Aspect 3: The method of aspect 2, further comprising configuring either uplink transmission or downlink reception during the first symbol or the second symbol at the first UE or the second UE via flexible or gap symbol reconfiguration, wherein the measurement report indicates a crosslink interference measurement of the first UE based at least in part on a measurement difference between the first symbol and the second symbol.

[0168]

[0180] Aspect 4: A method as described in any of aspects 1 to 3, wherein beamforming parameters of the first UE and the second UE are configured to be the same during at least a portion of a first SFI and a portion of a second SFI that are to be used to measure crosslink interference between the first UE and the second UE.

[0169]

[0181] Aspect 5: A method according to any of aspects 1 to 4, wherein the number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based at least in part on the SCS of the first UE or the second UE.

[0170]

[0182] Aspect 6: A method according to any of aspects 1 to 5, wherein the number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based at least in part on an interference estimation quality associated with a measurement report.

[0171]

[0183] Aspect 7: The method of aspect 6, wherein the interference estimation quality is a band-specific estimation quality, a bandwidth portion-specific estimation quality, or a link-specific estimation quality.

[0172]

[0184] Aspect 8: A method as described in any of aspects 1 to 7, wherein the power level at the first UE is configured based at least in part on the first SFI being selected for suitability for measuring interference between the first UE and the second UE.

[0173]

[0185] Aspect 9: The method of any of aspects 1 to 8, further comprising receiving a request from one or more of the first UE or the second UE to perform interference measurements for one or more SFIs, wherein the selecting and configuring are performed in response to the request.

[0174]

[0186] Aspect 10: The method of aspect 9, wherein the measurement report is received from the second UE and provides one or more of an indication of a set of compatible SFIs based on an interference measurement at the second UE, a first interference estimate associated with a first symbol of a slot during which the first UE does not transmit, a second interference estimate associated with a second symbol of a slot during which the first UE transmits uplink communications, or any combination thereof.

[0175]

[0187] Aspect 11: The method of any of aspects 1 to 10, wherein the first UE and the second UE are the same UE, the first carrier uses a first frequency band, and the second carrier uses a second frequency band different from the first frequency band.

[0176]

[0188] Aspect 12: A method for wireless communication in a second UE, comprising: receiving, from a base station, configuration information indicating a first SFI for communication via a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI; transmitting, to the base station, a measurement report providing one or more of a first interference measurement, a second interference measurement, an indication of a set of matching SFIs based at least in part on the first interference estimate and the second interference estimate, or any combination thereof, wherein the first interference estimate is based at least in part on the first interference measurement during the first measurement symbol and the second interference estimate is based at least in part on the second interference measurement during the second measurement symbol.

[0177]

[0189] Aspect 13: The method of aspect 12, wherein the first measurement symbol is configured to be a downlink symbol for receiving information at the second UE from the base station during the first measurement symbol, and the second measurement symbol is configured for uplink transmission at the first UE and configured to be a downlink symbol for receiving information at the second UE from the base station; and the measurement report indicates interference from simultaneous transmissions from the first UE and the base station during the second measurement symbol relative to a baseline case of downlink reception from only the base station during the first measurement symbol.

[0178]

[0190] Aspect 14: The method of aspect 13, further comprising receiving further configuration information from the base station via flexible or gap symbol reconfiguration, configuring either uplink transmission or downlink reception in the first measurement symbol or the second measurement symbol; and the measurement report indicating a crosslink interference measurement of the UE based at least in part on a measurement difference between the first measurement symbol and the second measurement symbol.

[0179]

[0191] Aspect 15: The method of any of aspects 12 to 14, wherein a receive beamforming parameter of the second UE is configured to be the same at least during the first measurement symbol and during the second measurement symbol.

[0180]

[0192] Aspect 16: A method as described in any of aspects 12 to 15, wherein the measurement report indicates one or more of a set of SFIs suitable for communication with the second UE, a set of beam pairs suitable for communication with the second UE, or any combination thereof.

[0181]

[0193] Aspect 17: The method of any of aspects 12 to 16, wherein the number of symbols or slots for which the first SFI is configured for crosslink measurements is based at least in part on an SCS of the second UE.

[0182]

[0194] Aspect 18: The method of any of aspects 12 to 17, wherein the number of symbols or slots for which the first SFI is configured for crosslink measurements is based at least in part on an interference estimation quality associated with the measurement report.

[0183]

[0195] Aspect 19: The method of aspect 18, wherein the interference estimation quality is a band-specific estimation quality, a bandwidth portion-specific estimation quality, or a link-specific estimation quality.

[0184]

[0196] Aspect 20: The method of any of aspects 12 to 19, further comprising sending a request to a base station to perform interference measurements for one or more slot formats, wherein the configuration information is received in response to the request.

[0185]

[0197] Aspect 21: An apparatus for wireless communication in a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any of aspects 1 to 11.

[0186]

[0198] An apparatus for wireless communication in a base station, comprising at least one means for performing the method according to any one of aspects 1 to 11.

[0187]

[0199] Aspect 23: A non-transitory computer-readable medium storing code for wireless communication in a base station, the code comprising instructions executable by a processor to perform a method as described in any of aspects 1 to 11.

[0188]

[0200] Aspect 24: An apparatus for wireless communication in a second UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method as described in any of aspects 12 to 20.

[0189]

[0201] Aspect 25: An apparatus for wireless communication in a second UE, comprising at least one means for performing a method as recited in any of aspects 12 to 20.

[0190]

[0202] Aspect 26: A non-transitory computer-readable medium storing code for wireless communication in a second UE, the code comprising instructions executable by a processor to perform a method as described in any of aspects 12 to 20.

[0191]

[0203] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described as examples, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may be applicable to other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0192]

[0204] The information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0193]

[0205] The various example blocks and components described in connection with the disclosure herein may be implemented or performed using a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but alternatively, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0194]

[0206] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. When implemented in software executed by a processor, the functions may be stored on or transmitted over a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the scope of the appended claims. For example, due to the nature of the software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed such that parts of the functions are implemented in different physical locations.

[0195]

[0207] Computer-readable media includes both non-transitory computer storage media and communication media, including any medium that facilitates transfer of a computer program from one place to another. Non-transitory storage media may be any available medium that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, Electrically Erasable Programmable ROM (EEPROM), Flash memory, Compact Disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general purpose or special purpose computer, or a general purpose or special purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer readable media. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc, where disks typically reproduce data magnetically and discs reproduce data optically with lasers. Combinations of the above are also included within the scope of computer readable media.

[0196]

[0208] As used herein, including within the claims, "or" used in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such as, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, the phrase "based on" as used herein is not to be construed as a reference to a closed set of conditions. For example, an exemplary step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, the phrase "based on" as used herein is to be construed in the same manner as the phrase "based at least in part on."

[0197]

[0209] In the accompanying figures, similar components or features may have the same reference label. Furthermore, various components of the same type may be distinguished by following the reference label with a dash and a second label that distinguishes the similar components. If only a first reference label is used herein, the description is applicable to any of the similar components having the same first reference label, regardless of the second reference label, or any other subsequent reference label.

[0198]

[0210] The description set forth herein with respect to the accompanying drawings describes exemplary configurations and does not necessarily represent all examples that may be implemented or fall within the scope of the claims. The term "exemplary" as used herein means "serving as an example, instance, or illustration" and does not mean "preferred" or "advantageous over other examples." The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0199]

[0211] The description herein is provided to enable any person skilled in the art to make or use the disclosure. Various modifications of the disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. The invention as described in the claims of the original application is set forth below. [C1] A method for wireless communication in a base station, comprising: selecting a first slot format index (SFI) for communication with a first user equipment (UE) over a first carrier and a second SFI for communication with a second UE over a second carrier, wherein the first SFI and the second SFI are selected based at least in part on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE; Configuring a first slot format in the first UE with the first SFI and configuring a second slot format in the second UE with the second SFI; receiving a measurement report for one or more of the first UE or the second UE, the measurement report indicating one or more interference measurements according to the first SFI or the second SFI; A method comprising: [C2] A first symbol of each of the first SFI and the second SFI is configured to be a downlink symbol during which each of the first UE and the second UE receives information from the base station; a second symbol of the first UE is configured for uplink transmission from the first UE and the second UE is configured for downlink reception during the second symbol; the second UE is configured to measure interference from simultaneous transmissions from the first UE and the base station during the second symbol relative to a baseline case of downlink reception from only the base station during the first symbol. The method according to C1. [C3] configuring either the uplink transmission or the downlink reception during the first symbol or the second symbol at the first UE or the second UE via flexible or gap symbol reconfiguration; Further equipped with the measurement report indicating a crosslink interference measurement of the first UE based at least in part on a measurement difference between the first symbol and the second symbol. The method according to C2. [C4] beamforming parameters of the first UE and the second UE are configured to be the same during at least a portion of the first SFI and a portion of the second SFI to be used for measuring crosslink interference between the first UE and the second UE. The method according to C1. [C5] The method of C1, wherein the number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based at least in part on a subcarrier spacing (SCS) of the first UE or the second UE. [C6] The method of C1, wherein the number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based at least in part on an interference estimation quality associated with the measurement report. [C7] The method of C6, wherein the interference estimation quality is a band-specific estimation quality, a bandwidth portion-specific estimation quality, or a link-specific estimation quality. [C8] The method of C1, wherein a power level at the first UE is configured based at least in part on the first SFI being selected for suitability for measuring interference between the first UE and the second UE. [C9] further comprising receiving a request from one or more of the first UE or the second UE to perform interference measurements for one or more SFIs; said selecting and said configuring being performed in response to said request; The method according to C1. [C10] The method of C9, wherein the measurement report is received from the second UE and provides one or more of an indication of a set of suitable SFIs based on an interference measurement at the second UE, a first interference estimate associated with a first symbol of a slot during which the first UE does not transmit, a second interference estimate associated with a second symbol of the slot during which the first UE transmits uplink communications, or any combination thereof. [C11] The first UE and the second UE are the same UE; The method of C1, wherein the first carrier uses a first frequency band and the second carrier uses a second frequency band different from the first frequency band. [C12] A method for wireless communication in a second user equipment (UE), comprising: receiving, from a base station, configuration information indicating a first slot format index (SFI) for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI; transmitting to the base station a measurement report providing one or more of a first interference measurement, a second interference measurement, an indication of a set of suitable SFIs based at least in part on a first interference estimate and a second interference estimate, or any combination thereof, wherein the first interference estimate is based at least in part on the first interference measurement during the first measurement symbol and the second interference estimate is based at least in part on the second interference measurement during the second measurement symbol; A method comprising: [C13] The first measurement symbol is configured to be a downlink symbol for receiving information at the second UE from the base station during the first measurement symbol; The second measurement symbol is configured for uplink transmission at a first UE and is configured to be a downlink symbol for receiving information from the base station at the second UE; the measurement report indicating interference from simultaneous transmissions from the first UE and the base station during the second measurement symbol relative to a baseline case of downlink reception from only the base station during the first measurement symbol. The method according to C12. [C14] receiving further configuration information from the base station via flexible or gap symbol reconfiguration, for configuring either the uplink transmission or the downlink reception in the first measurement symbol or the second measurement symbol; Further equipped with the measurement report indicating a crosslink interference measurement of the UE based at least in part on a measurement difference between the first measurement symbol and the second measurement symbol. The method according to C13. [C15] The receive beamforming parameters of the second UE are configured to be the same at least during the first measurement symbol and during the second measurement symbol. The method according to C12. [C16] The method described in C12, wherein the measurement report indicates one or more of a set of SFIs suitable for communication with the second UE, a set of beam pairs suitable for communication with the second UE, or any combination thereof. [C17] The method of C12, wherein the number of symbols or slots for which the first SFI is configured for crosslink measurements is based at least in part on a subcarrier spacing (SCS) of the second UE. [C18] The method of C12, wherein the number of symbols or slots in which the first SFI is configured for crosslink measurements is based at least in part on an interference estimation quality associated with the measurement report. [C19] The method of C18, wherein the interference quality estimate is a band-specific quality estimate, a bandwidth portion-specific quality estimate, or a link-specific quality estimate. [C20] further comprising transmitting a request to the base station to perform interference measurements for one or more slot formats; the configuration information is received in response to the request; The method according to C12. [C21] An apparatus for wireless communication in a base station, comprising: means for selecting a first slot format index (SFI) for communication with a first user equipment (UE) over a first carrier and a second SFI for communication with a second UE over a second carrier, wherein the first SFI and the second SFI are selected based at least in part on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE; means for configuring a first slot format in the first UE with the first SFI and for configuring a second slot format in the second UE with the second SFI; means for receiving a measurement report for one or more of the first UE or the second UE, the measurement report indicating one or more interference measurements according to the first SFI or the second SFI; An apparatus comprising: [C22] A first symbol of each of the first SFI and the second SFI is configured to be a downlink symbol during which each of the first UE and the second UE receives information from the base station; a second symbol of the first UE is configured for uplink transmission from the first UE and the second UE is configured for downlink reception during the second symbol; the second UE is configured to measure interference from simultaneous transmissions from the first UE and the base station during the second symbol relative to a baseline case of downlink reception from only the base station during the first symbol. The apparatus described in C21. [C23] means for configuring either the uplink transmission or the downlink reception during the first symbol or the second symbol at the first UE or the second UE via flexible or gap symbol reconfiguration; Further equipped with the measurement report indicating a crosslink interference measurement of the first UE based at least in part on a measurement difference between the first symbol and the second symbol. The apparatus described in C22. [C24] The apparatus of C21, wherein beamforming parameters of the first UE and beamforming parameters of the second UE are configured to be the same during at least a portion of the first SFI and a portion of the second SFI that are to be used to measure crosslink interference between the first UE and the second UE. [C25] The apparatus of C21, wherein the number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based at least in part on a subcarrier spacing (SCS) of the first UE or the second UE. [C26] The apparatus of C21, wherein a number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based at least in part on an interference estimation quality associated with the measurement report. [C27] An apparatus for wireless communication in a second user equipment (UE), comprising: means for receiving configuration information from a base station indicating a first slot format index (SFI) for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI; means for transmitting to the base station a measurement report providing one or more of a first interference measurement, a second interference measurement, an indication of a set of suitable SFIs based at least in part on a first interference estimate and a second interference estimate, or any combination thereof, wherein the first interference estimate is based at least in part on the first interference measurement during the first measurement symbol and the second interference estimate is based at least in part on the second interference measurement during the second measurement symbol; An apparatus comprising: [C28] The first measurement symbol is configured to be a downlink symbol for receiving information at the second UE from the base station during the first measurement symbol; The second measurement symbol is configured for uplink transmission at a first UE and is configured to be a downlink symbol for receiving information from the base station at the second UE; the measurement report indicating interference from simultaneous transmissions from the first UE and the base station during the second measurement symbol relative to a baseline case of downlink reception from only the base station during the first measurement symbol. The apparatus described in C27. [C29] means for receiving further configuration information from the base station, via flexible or gap symbol reconfiguration, for configuring either the uplink transmission or the downlink reception in the first measurement symbol or the second measurement symbol; Further equipped with the measurement report indicating a crosslink interference measurement of the UE based at least in part on a measurement difference between the first measurement symbol and the second measurement symbol. The apparatus described in C28. [C30] The apparatus of C27, wherein receive beamforming parameters of the second UE are configured to be the same at least during the first measurement symbol and during the second measurement symbol.

Claims

1. 1. A method for wireless communication in a base station, comprising: selecting a first slot format index (SFI) for communication with a first user equipment (UE) over a first carrier and a second SFI for communication with a second UE over a second carrier, wherein the first SFI and the second SFI are selected based at least in part on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE; Configuring a first slot format in the first UE with the first SFI and configuring a second slot format in the second UE with the second SFI; receiving a measurement report for one or more of the first UE or the second UE, the measurement report indicating one or more interference measurements according to the first SFI or the second SFI; Equipped with A first symbol of each of the first SFI and the second SFI is configured to be a downlink symbol during which each of the first UE and the second UE receives information from the base station; a second symbol of the first UE is configured for uplink transmission from the first UE and the second UE is configured for downlink reception during the second symbol; the second UE is configured by the base station to measure interference from simultaneous transmissions from the first UE and the base station during the second symbol relative to a baseline case of downlink reception from only the base station during the first symbol. method.

2. configuring either the uplink transmission or the downlink reception during the first symbol or the second symbol at the first UE or the second UE via flexible or gap symbol reconfiguration; Further equipped with the measurement report indicating a crosslink interference measurement of the first UE based at least in part on a measurement difference between the first symbol and the second symbol. The method of claim 1.

3. 3. The method of claim 1 or 2, wherein a number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based at least in part on a subcarrier spacing (SCS) of the first UE or the second UE.

4. 4. The method of claim 1, wherein the number of symbols or slots for which the first SFI and the second SFI are configured for crosslink interference measurement is based at least in part on an interference estimation quality associated with the measurement report.

5. 5. The method of claim 1, wherein a power level at the first UE is configured based at least in part on the first SFI being selected for suitability for measuring interference between the first UE and the second UE.

6. receiving a request from one or more of the first UE or the second UE to perform interference measurements for one or more SFIs; said selecting and said configuring being performed in response to said request; 6. The method according to any one of claims 1 to 5.

7. 7. The method of claim 6, wherein the measurement report is received from the second UE and provides one or more of an indication of a set of suitable SFIs based on an interference measurement at the second UE, a first interference estimate associated with a first symbol of a slot during which the first UE does not transmit, a second interference estimate associated with a second symbol of the slot during which the first UE transmits uplink communications, or any combination thereof.

8. The first UE and the second UE are the same UE, 8. The method of claim 1, wherein the first carrier uses a first frequency band and the second carrier uses a second frequency band different from the first frequency band.

9. A method for wireless communication in a second user equipment (UE), comprising: receiving, from a base station, configuration information indicating a first slot format index (SFI) for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI; transmitting to the base station a measurement report providing one or more of a first interference measurement, a second interference measurement, an indication of a set of matching SFIs based at least in part on a first interference estimate and a second interference estimate, or any combination thereof, wherein the first interference estimate is based at least in part on the first interference measurement during the first measurement symbol and the second interference estimate is based at least in part on the second interference measurement during the second measurement symbol; Equipped with The first measurement symbol is configured to be a downlink symbol for receiving information at the second UE from the base station during the first measurement symbol; The second measurement symbol is configured for uplink transmission at a first UE and is configured to be a downlink symbol for receiving information from the base station at the second UE; the measurement report indicating interference from simultaneous transmissions from the first UE and the base station during the second measurement symbol relative to a baseline case of downlink reception from only the base station during the first measurement symbol. method.

10. receiving further configuration information from the base station via flexible or gap symbol reconfiguration, for configuring either the uplink transmission or the downlink reception in the first measurement symbol or the second measurement symbol; Further equipped with the measurement report indicating a crosslink interference measurement of the UE based at least in part on a measurement difference between the first measurement symbol and the second measurement symbol.

10. The method of claim 9.

11. 11. The method of claim 9 or 10, wherein the measurement report indicates one or more of a set of SFIs suitable for communication with the second UE, a set of beam pairs suitable for communication with the second UE, or any combination thereof.

12. 12. The method of claim 9, wherein a number of symbols or slots for which the first SFI is configured for crosslink measurements is based at least in part on an interference estimation quality associated with the measurement report.

13. and transmitting a request to the base station to perform interference measurements for one or more slot formats; the configuration information is received in response to the request; 13. The method according to any one of claims 9 to 12.

14. An apparatus for wireless communication in a base station, comprising: means for selecting a first slot format index (SFI) for communication with a first user equipment (UE) over a first carrier and a second SFI for communication with a second UE over a second carrier, wherein the first SFI and the second SFI are selected based at least in part on suitability for measuring interference between the first UE and the second UE at one or more of the first UE or the second UE; means for configuring a first slot format in the first UE with the first SFI and for configuring a second slot format in the second UE with the second SFI; means for receiving a measurement report for one or more of the first UE or the second UE, the measurement report indicating one or more interference measurements according to the first SFI or the second SFI; Equipped with A first symbol of each of the first SFI and the second SFI is configured to be a downlink symbol during which each of the first UE and the second UE receives information from the base station; a second symbol of the first UE is configured for uplink transmission from the first UE and the second UE is configured for downlink reception during the second symbol; the second UE is configured by the base station to measure interference from simultaneous transmissions from the first UE and the base station during the second symbol relative to a baseline case of downlink reception from only the base station during the first symbol. Device.

15. An apparatus for wireless communication in a second user equipment (UE), comprising: means for receiving configuration information from a base station indicating a first slot format index (SFI) for communication over a first carrier and indicating at least a first measurement symbol and a second measurement symbol within the indicated SFI; means for transmitting to the base station a measurement report providing one or more of a first interference measurement, a second interference measurement, an indication of a set of matching SFIs based at least in part on a first interference estimate and a second interference estimate, or any combination thereof, wherein the first interference estimate is based at least in part on the first interference measurement during the first measurement symbol and the second interference estimate is based at least in part on the second interference measurement during the second measurement symbol; Equipped with The first measurement symbol is configured to be a downlink symbol for receiving information at the second UE from the base station during the first measurement symbol; The second measurement symbol is configured for uplink transmission at a first UE and is configured to be a downlink symbol for receiving information from the base station at the second UE; the measurement report indicating interference from simultaneous transmissions from the first UE and the base station during the second measurement symbol relative to a baseline case of downlink reception from only the base station during the first measurement symbol. Device.

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