Flow control feedback for full duplex communication

Abstract

Flow control feedback for full duplex communications. The described techniques provide for improving negative acknowledgement (NACK) feedback from a user equipment (UE) to limit self-interference during full duplex communication with a base station. Upon failing to receive a downlink transmission from the base station, the UE may generate feedback associated with self-interference at the UE for transmission to the base station. The UE may then transmit a report to the base station indicating that the UE fails to successfully decode the downlink transmission, and the UE may include the feedback associated with self-interference at the UE in the report. The base station may receive the report and adapt a configuration used for full duplex communication with the UE based on the feedback, thereby limiting self-interference at the UE during full two-handed communication.

Description

[0001] This application is a divisional application of the patent application filed on October 4, 2021, with application number 202180064095.1, international application number PCT / US2021 / 053370, and entitled "Flow control feedback for full-duplex communication".

[0002] Cross-references

[0003] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 087,846, filed October 5, 2020, entitled "FLOW CONTROLFEEDBACK FOR FULL-DUPLEX COMMUNICATIONS", and U.S. Patent Application No. 17 / 492,409, filed October 1, 2021, entitled "FLOW CONTROLFEEDBACK FOR FULL-DUPLEX COMMUNICATIONS"; each of these applications is assigned to its assignee, and each of these applications is expressly incorporated herein by reference. Technical Field

[0004] The following pertains to wireless communication in wireless communication systems, including the management of wireless communication in half-duplex and full-duplex wireless communication systems. Background Technology

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. These systems can support 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) systems, LTE-A Advanced (LTE-A) systems, or LTE-A Pro systems) and fifth-generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems can employ various 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 Extended 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 of which simultaneously supports communication from multiple communication devices, which may also be referred to as User Equipment (UE). Summary of the Invention

[0006] A method for wireless communication at a UE operating in full-duplex mode is described. The method may include: identifying that the UE has failed to successfully decode a downlink transmission from a base station; generating feedback associated with self-interference at the UE based on the identification and the UE operating in full-duplex mode; generating a report indicating that the UE has failed to successfully decode the downlink transmission, the report including feedback associated with self-interference at the UE based on the UE operating in full-duplex mode; and transmitting the report with the feedback associated with self-interference at the UE to the base station.

[0007] A method for performing wireless communication at a UE is described. The method may include: generating feedback associated with self-interference at the UE based on the UE's failure to successfully decode a downlink transmission in full-duplex mode; generating a report including the feedback associated with self-interference at the UE based on the full-duplex mode; and transmitting the report containing the feedback associated with self-interference at the UE.

[0008] An apparatus for wireless communication in full-duplex mode is described. The apparatus may include a processor and a memory coupled to the processor. The processor and memory may be configured to: generate feedback associated with self-interference at the apparatus based on the apparatus's failure to successfully decode a downlink transmission in full-duplex mode; generate a report including the feedback associated with self-interference at the apparatus based on the full-duplex mode; and transmit the report having the feedback associated with self-interference at the apparatus.

[0009] Another device for wireless communication in full-duplex mode is described. The device may include means for: generating feedback associated with self-interference at the device based on the device's failure to successfully decode a downlink transmission in full-duplex mode; generating a report including the feedback associated with self-interference at the device based on the full-duplex mode; and transmitting the report having the feedback associated with self-interference at the device.

[0010] A non-transient computer-readable medium is described, storing code for wireless communication at a UE. The code may include instructions executable by a processor to: generate feedback associated with self-interference at the UE based on the UE's failure to successfully decode a downlink transmission in full-duplex mode; generate a report including the feedback associated with self-interference at the UE based on full-duplex mode; and transmit the report containing the feedback associated with self-interference at the UE.

[0011] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, a report may indicate that the UE has failed to successfully decode a downlink transmission.

[0012] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, generating feedback associated with self-interference at the UE may include operations, features, means, or instructions for generating feedback including a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength of downlink transmission, or both.

[0013] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means, or instructions for determining that the UE has failed to successfully decode a downlink transmission based on self-interference caused by uplink transmissions from the UE, wherein generating feedback associated with the self-interference at the UE may include operations, features, means, or instructions for generating feedback including an uplink power configuration at the UE used for transmitting uplink transmissions, an indication that the UE has failed to successfully decode a downlink transmission based at least in part on self-interference, or both.

[0014] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, generating feedback associated with self-interference at the UE may include operations, features, means, or instructions for generating feedback including a recommended beam pair for full-duplex communication with the base station, a recommended uplink power configuration for full-duplex communication with the base station, or both.

[0015] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means, or instructions for transmitting a semi-persistent scheduled uplink transmission that overlaps with downlink transmission in the time domain, wherein generating feedback associated with self-interference at the UE may include operations, features, means, or instructions for generating feedback including an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with downlink transmission in the time domain.

[0016] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving configurations for full-duplex communication between the UE and the base station based on transmitting a report having feedback associated with self-interference at the UE.

[0017] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving radio resource control (RRC) signaling that instructs the UE to include feedback associated with self-interference at the UE in a report when the UE is capable of operating in full-duplex mode.

[0018] A method for wireless communication at a base station is described. The method may include: transmitting downlink transmissions to a UE; receiving a report from the UE including feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmitting a configuration for full-duplex communication between the UE and the base station to the UE based on the report including the feedback related to self-interference.

[0019] An apparatus for wireless communication is described. The apparatus may include a processor and memory coupled to the processor. The processor and memory may be configured to: transmit downlink transmissions to a UE; receive a report from the UE including feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmit a configuration for full-duplex communication between the UE and the apparatus based on the report including the feedback related to self-interference.

[0020] Another device for wireless communication is described. The device may include means for: transmitting downlink transmissions to a UE; receiving a report from the UE including feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmitting a configuration for full-duplex communication between the UE and the device based on the report including the feedback related to self-interference.

[0021] A non-transient computer-readable medium is described, storing code for wireless communication at a base station. The code may include instructions executable by a processor to: transmit downlink transmissions to a UE; receive a report from the UE including feedback related to self-interference at the UE based on the UE's operation in full-duplex mode; and transmit a configuration for full-duplex communication between the UE and the base station based on the report including the feedback related to self-interference.

[0022] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, a report may indicate that the UE has failed to successfully decode a downlink transmission.

[0023] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, feedback associated with self-interference at the UE includes: a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength of the downlink transmission, or both. In such examples, transmitting configuration for full-duplex communication to the UE may include operations, features, means, or instructions for transmitting configuration for full-duplex communication to the UE based on a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength, or both.

[0024] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, feedback associated with self-interference at the UE may include an uplink power configuration at the UE used to transmit uplink transmissions that cause self-interference to downlink transmissions, an indication that the UE has failed to successfully decode downlink transmissions based on self-interference, or both. In such examples, transmitting configuration for full-duplex communication to the UE may include operations, features, means, or instructions for transmitting configuration for full-duplex communication to the UE based on uplink power configuration, an indication that the UE has failed to successfully decode downlink transmissions based on self-interference, or both.

[0025] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, feedback associated with self-interference at the UE may include: a recommended beam pair for full-duplex communication, a recommended uplink power configuration for full-duplex communication, or both. In such examples, transmitting the configuration for full-duplex communication to the UE may include operations, features, means, or instructions for transmitting the configuration for full-duplex communication to the UE based on the recommended beam pair for full-duplex communication, the recommended uplink power configuration for full-duplex communication, or both.

[0026] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, feedback associated with self-interference at the UE includes: an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain. In such examples, transmitting configuration for full-duplex communication to the UE may include operations, features, means, or instructions for transmitting configuration for full-duplex communication to the UE based on an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain.

[0027] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting RRC signaling that instructs the UE to include feedback associated with self-interference at the UE in a report when the UE is capable of operating in full-duplex mode.

[0028] An apparatus for wireless communication at a UE operating in full-duplex mode is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: identify that the UE has failed to successfully decode a downlink transmission from a base station; generate feedback associated with self-interference at the UE based on the identification and based on the UE operating in full-duplex mode; generate a report indicating that the UE has failed to successfully decode the downlink transmission, the report including feedback associated with self-interference at the UE based on the UE operating in full-duplex mode; and transmit the report with feedback associated with self-interference at the UE to the base station.

[0029] Another apparatus for wireless communication at a UE operating in full-duplex mode is described. The apparatus may include means for: identifying that the UE has failed to successfully decode a downlink transmission from a base station; generating feedback associated with self-interference at the UE based on the identification and based on the UE operating in full-duplex mode; generating a report indicating that the UE has failed to successfully decode the downlink transmission, the report including feedback associated with self-interference at the UE based on the UE operating in full-duplex mode; and transmitting the report with the feedback associated with self-interference at the UE to the base station.

[0030] A non-transient computer-readable medium is described, storing code for wireless communication at a UE operating in full-duplex mode. The code may include instructions executable by a processor to: identify that the UE has failed to successfully decode a downlink transmission from a base station; generate feedback associated with self-interference at the UE based on the identification and based on the UE operating in full-duplex mode; generate a report indicating that the UE has failed to successfully decode the downlink transmission, the report including feedback associated with self-interference at the UE based on the UE operating in full-duplex mode; and transmit the report with the feedback associated with self-interference at the UE to the base station.

[0031] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, generating feedback associated with self-interference at the UE may include operations, features, means, or instructions for generating feedback that includes a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength transmitted downlink, or both.

[0032] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means, or instructions for determining that the UE has failed to successfully decode a downlink transmission based on self-interference caused by uplink transmissions from the UE, wherein generating feedback associated with the self-interference at the UE may include operations, features, means, or instructions for generating feedback including an uplink power configuration at the UE used for transmitting uplink transmissions, an indication that the UE has failed to successfully decode a downlink transmission based at least in part on self-interference, or both.

[0033] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, generating feedback associated with self-interference at the UE may include operations, features, means, or instructions for generating feedback including a recommended beam pair for full-duplex communication with the base station, a recommended uplink power configuration for full-duplex communication with the base station, or both.

[0034] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means, or instructions for transmitting a semi-persistent scheduled uplink transmission that overlaps with downlink transmission in the time domain, wherein generating feedback associated with self-interference at the UE may include operations, features, means, or instructions for generating feedback including an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with downlink transmission in the time domain.

[0035] Some examples of the methods, apparatus (devices) and non-transient computer-readable sections described herein may further include operations, features, devices or instructions for receiving configurations for full-duplex communication between the UE and the base station based on a report that has transmitted feedback with self-interference associated with the UE.

[0036] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, transmitting a report with feedback associated with self-interference at the UE to the base station may include operations, features, means, or instructions for transmitting a report with feedback associated with self-interference at the UE to the base station in a control channel, a data channel, or both.

[0037] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, transmitting a report in a control channel, a data channel, or both may include operations, features, means, or instructions for: a first phase of transmitting a report to a base station in a control channel; a second phase of receiving permission that allocates resources in a data channel for the UE to transmit the report; and a second phase of transmitting the report in a data channel based on receiving the permission, wherein the second phase of the report includes feedback associated with self-interference at the UE.

[0038] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving RRC signaling that instructs the UE to include feedback associated with self-interference at the UE in a report when the UE is capable of operating in full-duplex mode.

[0039] A method for wireless communication at a base station is described. The method may include: transmitting a downlink transmission to a UE; receiving from the UE a report indicating that the UE failed to successfully decode the downlink transmission, wherein the report includes feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmitting a configuration for full-duplex communication between the UE and the base station to the UE based on the received report with feedback related to self-interference.

[0040] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. These instructions may be executed by the processor to cause the apparatus to: transmit a downlink transmission to a UE; receive from the UE a report indicating that the UE has failed to successfully decode the downlink transmission, wherein the report includes feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and based on receiving the report with feedback related to self-interference, transmit a configuration for full-duplex communication between the UE and the base station to the UE.

[0041] Another apparatus for wireless communication at a base station is described. The apparatus may include means for: transmitting a downlink transmission to a UE; receiving from the UE a report indicating that the UE failed to successfully decode the downlink transmission, wherein the report includes feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmitting configuration for full-duplex communication between the UE and the base station to the UE based on the received report with feedback related to self-interference.

[0042] A non-transient computer-readable medium is described, storing code for wireless communication at a base station. The code may include instructions executable by a processor to: transmit a downlink transmission to a UE; receive from the UE a report indicating that the UE failed to successfully decode the downlink transmission, wherein the report includes feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmit to the UE a configuration for full-duplex communication between the UE and the base station based on the received report with feedback related to self-interference.

[0043] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, feedback associated with self-interference at the UE includes: a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength of the downlink transmission, or both. In such examples, transmitting configuration for full-duplex communication to the UE may include operations, features, means, or instructions for transmitting configuration for full-duplex communication to the UE based at least in part on the measurement of self-interference at the UE, the ratio of self-interference at the UE to the downlink signal strength, or both.

[0044] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, feedback associated with self-interference at the UE may include an uplink power configuration at the UE used to transmit uplink transmissions that cause self-interference to downlink transmissions, an indication that the UE has failed to successfully decode downlink transmissions based on self-interference, or both. In such examples, transmitting configuration for full-duplex communication to the UE may include operations, features, means, or instructions for transmitting configuration for full-duplex communication to the UE based on uplink power configuration, an indication that the UE has failed to successfully decode downlink transmissions based on self-interference, or both.

[0045] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, feedback associated with self-interference at the UE may include: a recommended beam pair for full-duplex communication, a recommended uplink power configuration for full-duplex communication, or both. In such examples, transmitting the configuration for full-duplex communication to the UE may include operations, features, means, or instructions for transmitting the configuration for full-duplex communication to the UE based on the recommended beam pair for full-duplex communication, the recommended uplink power configuration for full-duplex communication, or both.

[0046] In some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein, feedback associated with self-interference at the UE includes: an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain. In such examples, transmitting configuration for full-duplex communication to the UE may include operations, features, means, or instructions for transmitting configuration for full-duplex communication to the UE based on an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain.

[0047] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, receiving a report with feedback associated with self-interference at the UE may include operations, features, means, or instructions for receiving a report with feedback associated with self-interference at the UE in a control channel, a data channel, or both.

[0048] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, receiving a report in a control channel, a data channel, or both may include operations, features, means, or instructions for: a first phase of receiving the report in the control channel; a second phase of transmitting permission that allocates resources in the data channel to the UE for transmitting the report; and a second phase of receiving the report in the data channel based on the transmission of the permission, wherein the second phase of reporting includes feedback associated with self-interference at the UE.

[0049] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting RRC signaling that instructs the UE to include feedback associated with self-interference at the UE in a report when the UE is capable of operating in full-duplex mode. Attached Figure Description

[0050] Figure 1 and Figure 2 Examples of wireless communication systems that support flow control feedback for full-duplex communication according to one or more aspects of this disclosure are described.

[0051] Figure 3 An example of a process flow supporting flow control feedback for full-duplex communication, according to one or more aspects of this disclosure, is described.

[0052] Figure 4 and Figure 5 A block diagram of a device supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure is shown.

[0053] Figure 6A block diagram of a UE communication manager supporting flow control feedback for full-duplex communication, according to one or more aspects of this disclosure, is shown.

[0054] Figure 7 A diagram of a system including a device supporting flow control feedback for full-duplex communication, according to one or more aspects of this disclosure, is shown.

[0055] Figure 8 and Figure 9 A block diagram of a device supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure is shown.

[0056] Figure 10 A block diagram of a base station communication manager supporting flow control feedback for full-duplex communication, according to one or more aspects of this disclosure, is shown.

[0057] Figure 11 A diagram of a system including a device supporting flow control feedback for full-duplex communication, according to one or more aspects of this disclosure, is shown.

[0058] Figures 12 to 15 A flowchart illustrating a method for flow control feedback for full-duplex communication according to one or more aspects of this disclosure is shown. Detailed Implementation

[0059] Wireless communication systems may include communication devices, such as UEs or base stations (e.g., evolved B-nodes (eNBs), next-generation B-nodes, or gigabit B-nodes (any of which may be referred to as gNBs), or some other type of base station), that support wireless communication via one or more radio access technologies. Examples of radio access technologies include 4G systems (such as LTE systems) and 5G systems (which may be referred to as NR systems). Communication devices may operate in half-duplex or full-duplex mode, or a combination of both. For example, in half-duplex mode, a UE may transmit uplink communication or receive downlink communication during a transmission time interval (TTI). In full-duplex mode, a UE may transmit uplink communication and receive downlink communication simultaneously during a TTI. A TTI may span one or more time resources (e.g., symbols, mini-slots, time slots, etc.). As described herein, simultaneous wireless communication by a base station or a UE, or both, may include uplink transmission, uplink reception, downlink transmission, or downlink reception, or a combination thereof, occurring at the same time (e.g., symbol period, mini-slot, time slot, etc.). As described in this article, the term "simultaneous wireless communication" can refer to wireless communications that overlap in the time domain.

[0060] In some situations, when communicating in full-duplex mode, the UE may experience self-interference. As used herein, the term "self-interference" can refer to interference caused by uplink transmissions from the UE to downlink transmissions destined for the UE, or interference caused by downlink transmissions destined for the UE to uplink transmissions from the UE (e.g., between transmitted and received signals). In such cases, if the base station transmits a downlink transmission to the UE and the self-interference at the UE exceeds a threshold, the UE may fail to receive the downlink transmission. Thus, the UE may transmit a negative acknowledgment (NACK) feedback to the base station indicating that it failed to receive the downlink transmission. According to some examples, the base station may be unaware of the self-interference at the UE, and thus may determine that the UE failed to receive the downlink transmission based on channel conditions. Accordingly, to increase the likelihood that the UE will successfully receive subsequent transmissions, the base station may perform rate adaptation and adjust the modulation and coding scheme (MCS). However, since the UE failed to receive the downlink transmission based on self-interference rather than channel conditions, the adjustments made by the base station may be unnecessary and unhelpful, and the UE may continue to fail to receive subsequent downlink transmissions due to self-interference. As used herein, the term “feedback” may include NACK feedback information or additional information associated with self-interference.

[0061] As described herein, the UE and base station may support techniques for using NACK feedback to limit self-interference during full-duplex communication with the base station. As used herein, the term "full-duplex" may refer to a mode that supports bidirectional communication via simultaneous transmission and reception. After failing to receive a downlink transmission from the base station, the UE may generate feedback associated with self-interference at the UE for transmission to the base station. The UE may then transmit a report to the base station indicating that the UE failed to successfully decode the downlink transmission, and the UE may include the feedback associated with self-interference at the UE in the report. As used herein, the term "report" may refer to a feedback message that includes feedback information associated with self-interference. The base station may receive the report and adapt full-duplex communication with the UE based on the feedback associated with self-interference at the UE. For example, the base station may modify the configuration for full-duplex communication with the UE based on the report to limit self-interference during full-duplex communication. As used herein, the term “configuration” may refer to an uplink transmit beam used by the UE to transmit uplink transmissions during full-duplex communication, a downlink receive beam used by the UE to receive downlink transmissions during full-duplex communication, or a modulation and coding scheme (MCS), precoding matrix indicator (PMI), or rank indicator (RI) used for uplink or downlink transmissions during full-duplex communication.

[0062] Communication equipment (e.g., a base station or UE) may be configured with multiple antennas for transmitting and receiving communications when operating in full-duplex mode. In some cases, the communication equipment may be configured with multiple antenna panels for uplink and downlink communications. In some cases, as a result of using multiple antenna panels for uplink and downlink communications simultaneously (e.g., in full-duplex mode), the communication equipment may experience self-interference. In some cases, self-interference may occur due to signal leakage between the transmitting and receiving antennas.

[0063] The aspects of the subject matter described in this disclosure can be implemented to configure communication devices to support techniques for providing feedback on self-interference, and can support improvements in power consumption and spectral efficiency, and in some examples can provide more reliable and lower latency full-duplex communication. In some examples, these techniques can be used by communication devices for full-duplex communication.

[0064] The aspects of this disclosure described above are described below in the context of a wireless communication system. Examples of processes and signaling exchange supporting flow control feedback for full-duplex communication are then described. The aspects of this disclosure are further explained and described with reference to apparatus diagrams, system diagrams, and flowcharts relating to flow control feedback for full-duplex communication.

[0065] Figure 1 Examples of a wireless communication system 100 supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure are described. 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 an LTE network, an LTE-A network, an LTE-A Pro network, or an NR network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0066] Base station 105 can be distributed across a geographical area to form wireless communication system 100, and can be different types of devices or devices with different capabilities. Base station 105 and UE 115 can communicate wirelessly via one or more communication links 125. Each base station 105 can provide a coverage area 110, and UE 115 and base station 105 can establish one or more communication links 125 on the coverage area 110. Coverage area 110 can be an example of a geographical area over which base station 105 and UE 115 can support signal communication according to one or more radio access technologies.

[0067] Each UE 115 can be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. Each UE 115 can be a different type of device or a device with different capabilities. Figure 1 The document describes some example UE 115s. The UE 115 described herein can communicate with various types of devices, such as other UE 115s, base station 105, or network equipment (e.g., core network nodes, relay equipment, integrated access and backhaul (IAB) nodes, or other network equipment). Figure 1 As shown in the image.

[0068] Each base station 105 may communicate with the core network 130, or with each other, or both. For example, base station 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base stations 105 may communicate with each other directly (e.g., directly between base stations 105), indirectly (e.g., via the core network 130), or directly and indirectly on backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, backhaul link 120 may be or include one or more radio links. UE 115 may communicate with the core network 130 via communication link 155. One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, base transceiver station, radio base station, access point, radio transceiver, B-node, eNB, next-generation B-node or gigabit B-node (any of which may be referred to as gNB), home B-node, home evolved B-node, or other suitable terms.

[0069] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or some other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, which can be implemented in various objects such as electrical appliances or vehicles, meters, etc. The UE 115 described herein can be able to communicate with various types of devices, such as other UE 115s that may sometimes act as relays, as well as base station 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1 As shown in the image.

[0070] UE 115 and base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the radio spectrum band (e.g., a bandwidth portion (BWP)) operating 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 coordinating carrier operation, user data, or other signaling. Wireless communication system 100 may support communication with UE 115 using carrier aggregation or multi-carrier operation. UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used in conjunction with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0071] The carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. The 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 located according to a channel grid for discovery by UE 115. The carrier may operate in an autonomous mode in which initial acquisition and connection can be performed by UE 115 via the carrier, or in a non-autonomous mode in which different carriers (e.g., different carriers anchored using the same or different radio access technologies) are connected. The communication link 125 shown in the wireless communication system 100 may include uplink transmissions from UE 115 to base station 105, or downlink transmissions from base station 105 to UE 115. The carrier may carry downlink or uplink communication (e.g., in FDD mode), or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).

[0072] A carrier may be associated with a specific 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 defined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz) of a carrier for a particular radio access technology. Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication over a specific carrier bandwidth, or may be configurable to support communication over a single carrier bandwidth within 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 over a portion (e.g., a subband, BWP) or all of the carrier bandwidth.

[0073] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or DFT-S-OFDM). In a system employing MCM, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and 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 code 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 the UE 115 can achieve. Wireless communication resources can refer to a combination of radio frequency spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and using multiple spatial layers can further improve the data rate or data integrity of communication with the UE 115.

[0074] It can support one or more parameter designs for the carrier, wherein the parameter design may include the subcarrier spacing ( Δf The carrier can be divided into one or more BWPs with the same or different parameter designs. In some examples, UE 115 can be configured with multiple BWPs. In some examples, a single BWP for a carrier can be active at a given time, and communication for UE 115 can be limited to one or more active BWPs. The time interval of base station 105 or UE 115 can be expressed as a multiple of a basic time unit, such as a sampling period. T s = 1 / (Δ f max N f ) seconds, of which Δf max This can represent the maximum supported subcarrier spacing, while N f This can represent the maximum supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0075] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into several time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include several symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple mini-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f (Number) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or operating frequency band. A subframe, time slot, mini-time slot, or symbol may be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and may be referred to as a TTI. In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0076] Physical channels can be multiplexed on a carrier using various techniques. Physical control channels and physical data channels can be multiplexed on a downlink carrier, for example, using one or more of time-division multiplexing (TDM), frequency-division multiplexing (FDM), or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for physical control channels can be defined by the number of symbol periods and can extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESET) can be configured for a group of UEs 115. For example, one or more UEs 115 can monitor or search control regions for control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information in a control information format having a given payload size. The search space set may include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set configured to send control information to a specific UE 115.

[0077] Each base station 105 may provide communication coverage via one or more cells (e.g., macrocells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with base station 105 (e.g., on a carrier) and may be associated with an identifier used to distinguish adjacent cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), or others). In some examples, a cell may also refer to a geographic coverage area 110 or a portion of geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. The extent of such cells may vary from smaller areas (e.g., structures, subsets of structures) to larger areas depending on various factors (such as the capabilities of base station 105). For example, a cell may be or include buildings, subsets of buildings, or external space between or overlapping geographic coverage areas 110, among other examples.

[0078] Macrocells cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access for UEs 115 that have service subscriptions with network providers supporting macrocells. Small cells may be associated with lower-power base stations 105 (compared to macrocells) and may operate in the same or different (e.g., licensed, unlicensed) frequency bands as macrocells. Small cells may provide unrestricted access to UEs 115 that have service subscriptions with network providers, or may provide restricted access to UEs 115 associated with small cells (e.g., UEs 115 in a Closed Subscriber Group (CSG), or UEs 115 associated with a user in a home or office). 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. In some examples, carriers may support multiple cells, and different cells may be configured according to different protocol types that provide access for different types of devices (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)).

[0079] Base station 105 can be mobile, and therefore provides communication coverage to mobile 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. Wireless communication system 100 may include, for example, a heterogeneous network, in which different types of base stations 105 use the same or different radio access technologies to provide coverage to various geographic coverage areas 110.

[0080] The wireless communication system 100 can support synchronous or asynchronous operation. For synchronous operation, base stations 105 can have similar frame timing, and transmissions from different base stations 105 can be approximately time-aligned. For asynchronous operation, base stations 105 can have different frame timing, and transmissions from different base stations 105 may not be time-aligned in some examples. The techniques described herein can be used for both synchronous and asynchronous operation.

[0081] Some UE 115 devices (such as MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with each other or with base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that have integrated sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents it to people interacting with the application. Some UE 115 devices may be designed to collect information or automate the behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wilderness survival monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0082] UE 115 can be configured to operate in a power-saving mode, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication can be performed at a reduced peak rate. Other power-saving techniques for UE 115 include entering a power-saving deep sleep mode when not engaged in active communication, operating on limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UE 115 can be configured to operate using a narrowband protocol type associated with a defined portion or range (e.g., a subcarrier or resource block (RB) set) within the carrier, within the carrier's guard band, or outside the carrier.

[0083] As a supplement or replacement for half-duplex mode, some UEs 115 may also support full-duplex mode. Full-duplex mode refers to a mode that supports bidirectional communication via simultaneous transmission and reception. Full-duplex mode is an emerging technology that theoretically doubles link capacity by enabling radio network nodes to transmit and receive simultaneously on the same frequency and time radio resources. Full-duplex breaks the constraints of half-duplex operation where transmission and reception differ in time or frequency. Full-duplex network nodes (such as base station 105 or UE 115 in a cellular network) can communicate simultaneously with two half-duplex panels using the same radio resources in both uplink and downlink. Therefore, a UE 115 equipped with multiple TRPs and capable of simultaneous transmission and reception using the same time-frequency radio resources (e.g., a vehicle in V2X communication) can be referred to as a full-duplex UE. UE 115 can also operate in full-duplex mode and revert to half-duplex mode.

[0084] In the wireless communication system 100, UE 115 or base station 105, or both, may support half-duplex communication, full-duplex communication, or a combination thereof. For example, UE 115 may operate in half-duplex mode, in which, during a TTI, UE 115 may receive downlink communication from or transmit uplink communication to base station 105. Similarly, base station 105 may operate in half-duplex mode, in which, during a TTI, base station 105 may transmit downlink communication to or receive uplink communication from UE 115. In some cases, UE 115 or base station 105, or both, may experience self-interference when operating in full-duplex mode. In some examples, self-interference may occur due to signal leakage between the transmit and receive antennas. In some examples, self-interference may occur from the transmit antenna to the receive chain due to proxying by UE 115 or base station 105, or both. In some other examples, self-interference can occur from the transmit antenna to the receive chain due to one or more signal reflections caused by local antenna clutter. In some cases, using cancellation techniques (e.g., analog cancellation, digital cancellation, etc.), self-interference from the transmitted signal can be as strong as that from the received signal.

[0085] When operating in full-duplex mode, UE 115 or base station 105, or both, may use different BWPs to reduce self-interference. In other words, UE 115 or base station 105, or both, may use different BWPs for downlink and uplink communications. For example, UE 115 may use one BWP to receive downlink transmissions from base station 105 and another BWP to transmit uplink transmissions to base station 105. Similarly, base station 105 may use one BWP to transmit downlink transmissions to UE 115 and another BWP to receive uplink transmissions from UE 115. In some cases, reducing or mitigating self-interference can improve the spectral efficiency in wireless communication system 100. In other cases, reducing or mitigating self-interference can provide higher reliability and lower latency for wireless communication between UE 115 and base station 105, or between at least two UEs 115, etc. (e.g., in D2D wireless communication).

[0086] The wireless communication system 100 may additionally or alternatively support reducing or eliminating self-interference based on beampair selection. Base station 105 or UE 115, or both, may reduce or mitigate self-interference based on the selection of uplink and downlink beampairs. For example, base station 105 or UE 115, or both, may select transmit beams (e.g., transmit uplink beam, transmit downlink beam) and receive beams (e.g., receive uplink beam, receive downlink beam) from different antenna panels or beams with different spatial orientations and orientations. In some examples, base station 105 or UE 115, or both, may select uplink and downlink beampairs based on beam training procedures using simultaneous reference signal sweep operations (e.g., CSI-RS, SRS, etc.). In full-duplex mode, base station 105 or UE 115, or both, can use two beam pairs on the link to achieve uplink and downlink equalization of signal strength in the expected link (e.g., uplink and downlink path loss equalization) and to achieve uplink and downlink equalization of self-interference. For example, if the uplink beam changes, UE 115 can also update the downlink beam.

[0087] In the wireless communication system 100, the UE 115 and the base station 105 (e.g., an eNB, a next-generation B-node, or a gigabit B-node (any of which may be referred to as a gNB), or some other base station) can support wireless communication via one or more radio access technologies. Examples of radio access technologies include 4G systems (such as LTE systems) and 5G systems (which may be referred to as NR systems). The base station 105 and the UE 115 can operate in half-duplex mode or full-duplex mode, or a combination of both. The wireless communication system 100 can be configured to support techniques at the UE 115 for reporting feedback associated with self-interference to the base station 105 after failing to receive downlink transmissions from the base station 105. In other words, the UE 115 can be configured to transmit additional feedback (e.g., as a supplement to an indication that the UE 115 has failed to receive downlink transmissions) to assist the base station 105 in appropriately configuring the UE 115 for full-duplex communication. Because additional feedback may be associated with self-interference (e.g., including self-interference measurements or may otherwise be based on self-interference), additional feedback may differ from any feedback reported by UE 115 operating in half-duplex mode (e.g., because UE 115 operating in half-duplex mode may not experience self-interference).

[0088] Base station 105 may include base station communication manager 102, which enables base station 105 to receive reports from UE 115 including feedback associated with self-interference at UE 115 and to configure UE 115 for full-duplex communication based on the self-interference associated feedback. UE 115 may include UE communication manager 101, which enables UE 115 to transmit reports including feedback associated with self-interference at UE 115 to the base station and to receive configurations for full-duplex communication based on the self-interference associated feedback from the base station. Because the configuration at UE 115 for receiving downlink transmissions can be adapted to limit self-interference, the chances of UE 115 successfully receiving and decoding subsequent downlink transmissions from base station 105 may be increased.

[0089] Wireless communication system 100 may be configured to support ultra-reliable communication or low latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low latency communication (URLLC) or mission-critical communication. UE 115 may be designed to support ultra-reliable, low latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private or group communication and may be supported by one or more mission-critical services, such as Mission-Critical Talk-to-Talk (MCPTT), Mission-Critical Video (MCVideo), or Mission-Critical Data (MCData). Support for mission-critical functions may include prioritization of services, and 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 are used interchangeably herein.

[0090] UE 115 may also be able to communicate directly with other UE 115 on a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UE 115s utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UE 115s in such a group may be outside the geographic coverage area 110 of base station 105 or may be unable to receive transmissions from base station 105 for other reasons. In some examples, groups of UE 115s communicating via D2D communication may utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between the individual UE 115s without involving base station 105.

[0091] 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, vehicles may communicate using vehicle-to-vehicle (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles may signal information related to traffic conditions, signaling, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate via vehicle-to-network (V2N) communication through one or more network nodes (e.g., base station 105) with roadside infrastructure (such as roadside units), or with the network, or with both.

[0092] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC). The EPC or 5GC may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by base station 105 associated with core network 130. User IP packets can be delivered through the user plane entity, which provides IP address allocation and other functions. The user plane entity may be connected to one or more network operator IP services 150. The IP service 150 may include access to the Internet, intranet, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0093] Some network devices (such as base station 105) may include sub-components, such as access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with each UE 115 through one or more other access network transport entities 145, which may be referred to as a radio headend, smart radio headend, or transmit / receive point (TRP). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio headends and ANCs) or combined into a single network device (e.g., base station 105).

[0094] Wireless communication system 100 can operate using one or more frequency bands in the range of 300 MHz to 300 GHz. The 300 MHz to 3 GHz band is referred to as a UHF band or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter. UHF waves can be blocked or redirected by buildings and environmental features, but these waves can penetrate various structures sufficiently for macrocells to provide service to UE 115 located indoors. 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, UHF wave transmission can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0095] The wireless communication system 100 can also operate in the ultra-high frequency (SHF) zoning using a frequency band from 3 GHz to 30 GHz (also known as the centimeter band) or in the extremely high frequency (EHF) zoning using a spectrum (e.g., from 30 GHz to 300 GHz) (also known as the millimeter band). In some examples, the wireless communication system 100 can support millimeter-wave (mmW) communication between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices can be smaller and more closely spaced than UHF antennas. In some examples, this can facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may suffer even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein can be employed across transmissions using one or more different frequency zonings, and the frequency band usage specified across these frequency zonings may vary by country or regulatory authority.

[0096] The electromagnetic spectrum is typically subdivided into various classes, bands, channels, etc., based on frequency / wavelength. In 5G NR, two initial operating bands have been designated as frequency ranges FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is generally (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. Similar naming issues sometimes arise regarding FR2; although different from the Very High Frequency (EHF) band (30 GHz – 300 GHz) designated as the "millimeter wave" band by the International Telecommunication Union (ITU), FR2 is generally (interchangeably) referred to as the "millimeter wave" band in various documents and articles.

[0097] Although a portion of FR1 exceeds 6 GHz, FR1 is generally (interchangeably) referred to as the "sub-6 GHz band" in various documents and articles. Similar naming issues sometimes arise with FR2, although it is generally (interchangeably) referred to as the "millimeter wave" band in various documents and articles, although distinct from the Very High Frequency (EHF) band (30 GHz – 300 GHz) identified by the ITU as the "millimeter wave" band. Taking all of the above into account, unless specifically stated otherwise, it should be understood that, if used herein, the term "sub-6 GHz," etc., can broadly refer to frequencies less than 6 GHz, within FR1, or that may include mid-band frequencies. Furthermore, unless specifically stated otherwise, it should be understood that, if used herein, the term "millimeter wave," etc., can broadly refer to frequencies that may include mid-band frequencies, within FR2, or within the EHF band.

[0098] The frequencies between FR1 and FR2 are generally referred to as intermediate frequency (IF) bands. Recent 5G NR studies have identified the operating bands of these IF bands as the frequency range designation FR3 (7.125 GHz – 24.25 GHz). Bands falling within FR3 can inherit FR1 and / or FR2 characteristics, thus effectively extending the features of FR1 and / or FR2 into the IF band. Additionally, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating frequency bands have been identified as the frequency range designations FR4a or FR4-1 (52.6 GHz – 71 GHz), FR4 (52.6 GHz – 114.25 GHz), and FR5 (114.25 GHz – 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0099] In light of the foregoing, unless otherwise stated, it should be understood that, as used herein, the term "sub-6 GHz" and the like can broadly refer to frequencies less than 6 GHz, within FR1, or including intermediate frequency band frequencies. Furthermore, unless otherwise stated, it should be understood that, as used herein, the term "millimeter wave" and the like can broadly refer to frequencies that can include intermediate frequency band frequencies, within FR2, FR4, FR4-a or FR4-1 and / or FR5, or within the EHF band.

[0100] Wireless communication system 100 may utilize both licensed and unlicensed radio spectrum bands. For example, wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed frequency bands, such as the 5 GHz Industrial, Scientific, and Medical (ISM) band. When operating in unlicensed radio spectrum bands, devices (such as base station 105 and UE 115) may employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands may be based on carrier aggregation configuration (e.g., LAA) in coordination with component carriers operating in licensed frequency bands. Operation in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0101] Base station 105 or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels that can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may coexist at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have an antenna array with several rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0102] Base station 105 or UE 115 can use MIMO communication to leverage multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. This technique is known as spatial multiplexing. For example, a transmitting device may transmit multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device may receive multiple signals 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 associated with 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 measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device; and multi-user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices.

[0103] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array, such that some signals propagating relative to a particular orientation of the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include the transmitting or receiving device applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with that device. The adjustments associated with each antenna element may be defined by a beamforming weight set associated with a particular orientation (e.g., the antenna array relative to the transmitting or receiving device, or relative to some other orientation).

[0104] Base station 105 or UE 115 may use beamsweeping techniques as part of beamforming operations. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) for beamforming operations to facilitate directional communication with UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by base station 105 in different directions. For example, base station 105 may transmit signals based on different beamforming weight sets associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by the transmitting device (such as base station 105) or the receiving device (such as UE 115)) to identify the beam direction that base station 105 will use for later transmission or reception. Some signals (such as data signals associated with a particular receiving device) may be transmitted by base station 105 in a single beam direction (e.g., the direction associated with the receiving device (such as UE 115)). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions, and may report to base station 105 an indication of the signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0105] In some examples, transmissions performed by a device (e.g., by base station 105 or 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 combined beams for transmission (e.g., from base station 105 to UE 115). UE 115 may report feedback indicating precoding weights for one or more beam directions, and this feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. Base station 105 may transmit reference signals that can be precoded or unprecoded (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)). UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify the beam direction used by UE 115 for subsequent transmission or reception) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0106] A receiver device (e.g., UE 115) may attempt multiple receive configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105. For example, the receiver device may attempt multiple receive directions by: receiving via different antenna subarrays; processing received signals according to different antenna subarrays; receiving according to different sets of receive beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets); or processing received signals according to different sets of receive beamforming weights 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 receiver device may use a single receive configuration to receive along a single beam direction (e.g., when a data signal is received). The single receive configuration may be aligned on 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 other acceptable signal quality based on listening according to multiple beam directions).

[0107] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP-based. The Radio Link Control (RLC) layer performs packet segmentation and reassembly for communication on logical channels. The Media Access Control (MAC) layer performs priority handling and multiplexing of logical channels into transport channels. The MAC layer can also use error detection, error correction, or both to support MAC layer retransmissions to improve link efficiency. In the control plane, the RRC protocol layer provides the establishment, configuration, and maintenance of RRC connections between the UE 115 and the base station 105 or core network 130 that support user plane data radio bearers. At the physical layer, transport channels can be mapped to physical channels.

[0108] As a complement or replacement to the implementation between UE 115 and base station 105, the techniques described herein can also be implemented via additional or replacement radio devices, including IAB node 104, distributed unit (DU) 165, centralized unit (CU) 160, radio unit (RU) 170, and so on. For example, in some implementations, the aspects described herein can be implemented in the context of a decomposed radio access network architecture (e.g., an open RAN architecture). In a decomposed architecture, the RAN can be divided into three functional areas corresponding to CU 160, DU 165, and RU 170. The functional division between CU 160, DU 165, and RU 175 is flexible and thus results in numerous permutations and combinations of different functions depending on which functions (e.g., MAC functions, baseband functions, radio frequency functions, and any combination thereof) are performed at CU 160, DU 165, and RU 175. For example, a functional split of the protocol stack can be used between DU 165 and RU 170, so that DU 165 can support one or more layers of the protocol stack while RU 170 can support different layers of the protocol stack.

[0109] Some wireless communication systems (e.g., wireless communication system 100), infrastructure, and spectrum resources for NR access may additionally support wireless backhaul link capabilities as a complement to wired backhaul connections, thereby providing an IAB network architecture. One or more base stations 105 may include CU 160, DU 165, and RU 170, and may be referred to as donor base station 105 or IAB donor. One or more DU 165s (e.g., and / or RU 170) associated with donor base station 105 may potentially be controlled by CU 160 associated with donor base station 105. One or more donor base stations 105 (e.g., IAB donors) may communicate with one or more additional base stations 105 (e.g., IAB node 104) via supported access and backhaul links. IAB node 104 may support mobile terminal (MT) functionality controlled and / or scheduled by the coupled IAB donor's DU 165. Additionally, IAB node 104 may include communication links with additional entities (e.g., IAB node 104, UE 115, etc.) within the access network's relay chain or configuration (e.g., downstream). In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of IAB node 104) may be configured to operate according to the techniques described herein.

[0110] In some examples, the wireless communication system 100 may include a core network 130 (e.g., a next-generation core network (NGC)), one or more IAB donors, IAB nodes 104, and a UE 115, wherein the IAB nodes 104 may partially control each other and / or be controlled by the IAB donors. The IAB donors and IAB nodes 104 may be examples of various aspects of a base station 105. The IAB donors and one or more IAB nodes 104 may be configured as a relay chain (e.g., or communicate according to a relay chain).

[0111] For example, the access network (AN) or RAN can refer to communication between an access node (e.g., an IAB donor), IAB node 104, and one or more UEs 115. An IAB donor can facilitate connectivity between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130). In other words, an IAB donor can refer to a RAN node with a wired or wireless connection to the core network 130. An IAB donor may include a CU 160 and at least one DU 165 (e.g., and an RU 170), where the CU 160 communicates with the core network 130 via an NG interface (e.g., a backhaul link). The CU 160 may store Layer 3 (L3) functionality and signaling (e.g., RRC, Serving Data Adaptation Protocol (SDAP), PDCP, etc.). At least one DU 165 and / or RU 170 can store lower-layer (such as Layer 1 (L1) and Layer 2 (L2) functions and signaling (e.g., RLC, MAC, physical (PHY) etc.)) and can each be at least partially controlled by CU 160. DU 165 can support one or more different cells. IAB donors and IAB nodes 104 can communicate via an F1 interface according to a protocol that defines the signaling messages (e.g., the F1 AP protocol). Additionally, CU 160 can communicate with the core network via an NG interface (which may be an example of a backhaul link) and can communicate with other CU 160s (e.g., CU 160 associated with a replacement IAB donor) via an Xn-C interface (which may be an example of a backhaul link).

[0112] IAB node 104 may refer to a RAN node that provides IAB functionality (e.g., access for UE 115, radio self-backhaul capability, etc.). IAB node 104 may include DU 165 and MT. DU 165 may act as a distributed scheduling node toward child nodes associated with IAB node 104, and MT may act as a scheduled node toward a parent node associated with IAB node 104. In other words, an IAB donor may be referred to as a parent node communicating with one or more child nodes (e.g., an IAB donor may relay transmissions for the UE through one or more other IAB nodes 104). Additionally, depending on the AN's relay chain or configuration, IAB node 104 may also be referred to as a parent node or child node of other IAB nodes 104. Therefore, the MT entity (e.g., MT) of IAB node 104 can provide a Uu interface for child nodes to receive signaling from parent IAB node 104, and the DU interface (e.g., DU 165) can provide a Uu interface for parent nodes to send signals to child IAB nodes 104 or 115.

[0113] For example, IAB node 104 can be referred to as a parent node associated with an IAB node and a child node associated with an IAB donor. An IAB donor may include a CU 160 with a wired (e.g., fiber optic) or wireless connection to the core network and may act as a parent node of IAB node 104. For example, the IAB donor's DU 165 can relay transmissions to UE 115 through IAB node 104 and can directly signal transmissions to UE 115. The IAB donor's CU 160 can signal the establishment of a communication link to IAB node 104 via the F1 interface, and IAB node 104 can schedule transmissions (e.g., transmissions relayed from the IAB donor to UE 115) through DU 165. In other words, data can be relayed to or from IAB node 104 via the NR Uu interface of the MT to IAB node 104. Communication with IAB node 104 can be scheduled by DU 165 of the IAB donor, and communication with IAB node 104 can be scheduled by DU 165 of IAB node 104.

[0114] The techniques described herein are applied in the context of a decomposed RAN architecture, where one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of IAB node 104) can be configured to support flow control feedback techniques for full-duplex communication as described herein. For example, some operations described as being performed by UE 115 or base station 105 may be additionally or alternatively performed by components of the decomposed RAN architecture (e.g., IAB nodes, DUs, CUs, etc.).

[0115] UE 115 and base station 105 can support data retransmission to increase the likelihood of successful data reception. Flow control feedback is a technique used to increase the likelihood of correctly receiving data on communication link 125. Flow control feedback may include an acknowledgment (ACK) indicating that the receiving device has successfully decoded a transmission and a non-acknowledgment (NACK) indicating that the receiving device has failed to decode a transmission. An example of flow control feedback (i.e., feedback that controls the communication flow between base station 105 and UE 115) is hybrid automatic repeat request (HARQ) feedback. HARQ may include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve MAC layer throughput in poor radio conditions (e.g., low signal-to-noise ratio conditions). In some aspects, the device may support simultaneous time-slot HARQ feedback, where the device can provide HARQ feedback in a specific time slot for data received in a previous symbol within that time slot. In other cases, the device may provide HARQ feedback in subsequent time slots or according to a different time interval.

[0116] In some aspects, base station 105 in wireless communication system 100 can support rate control and rate adaptation to adjust the transmission rate based on channel conditions. For example, when UE 115 moves and changes location, the channel gain of the channel may change over time (e.g., time-varying fading). Therefore, base station 105 can adjust the transmission rate (e.g., MCS) based on channel gain or channel conditions to improve throughput in wireless communication system 100. Base station 105 can perform rate control based on ACK / NACK from UE 115. For example, base station 105 can increment MCS by 1 after receiving M consecutive ACKs, and base station can decrement MCS by X after receiving one or more NACKs. By using these techniques, base station 105 can handle downlink failures due to changes in channel conditions.

[0117] Additionally, as described above, a major cause of downlink failure in full-duplex mode may be self-interference. For example, uplink transmissions from UE 115 may be too strong, causing significant self-interference at UE 115 on downlink transmissions. Besides rate control (e.g., changing the MCS), there may be more efficient ways to handle downlink failures due to self-interference. In one example, base station 105 may request UE 115 to change its uplink power. In another example, base station 105 may request UE 115 to change from operating in full-duplex mode to operating in half-duplex mode. In yet another example, base station 105 and UE 115 may switch to another uplink / downlink beamp pair for full-duplex communication to limit self-interference.

[0118] However, in some situations, base station 105 may not be aware of whether UE 115 is operating in full-duplex mode or whether UE 115 is experiencing self-interference. For example, UE 115 may perform self-interference measurements, and base station 105 may not be aware of these measurements. Furthermore, for unpermitted uplink transmissions, base station 105 may not accurately know whether uplink transmissions were delivered when downlink failures occur. Specifically, unpermitted uplink transmissions (which may be referred to as semi-static, semi-persistent, or semi-persistent scheduling (SPS) uplink transmissions) may be transmissions on pre-allocated resources (e.g., resources allocated via RRC rather than via permission), and base station 105 may not be able to identify whether these pre-allocated resources include uplink transmissions. Because base station 105 may not be aware of self-interference at UE 115, base station 105 may not be able to adapt full-duplex communication with UE 115 based on self-interference. As a result, UE 115 may continue to experience downlink failures due to self-interference. The UE 115 in the wireless communication system 100 can support efficient techniques for providing feedback related to self-interference at the UE 115 to the base station 105 using NACK feedback.

[0119] Figure 2 Examples of a wireless communication system 200 supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure are described. The wireless communication system 200 may implement aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a base station 105 and a user interface unit (UE) 115, which may be examples of base station 105 and UE 115 as described herein. The wireless communication system 200 may support various radio access technologies, including 4G systems (such as LTE systems, LTE-A systems, or LTE-A Pro systems) and 5G systems (which may be referred to as NR systems).

[0120] Base station 105 and UE 115 may be configured with multiple antennas, which can be used to employ techniques such as transmit diversity, receive diversity, MIMO communication, or beamforming, or any combination thereof. The antennas of base station 105 and UE 115 may be located within one or more antenna arrays or antenna panels that can support MIMO operation or transmit or receive beamforming. For example, the antennas or antenna arrays of base station 105 may coexist at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have an antenna array with several rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panels may support radio frequency beamforming for signals transmitted via one or more antenna ports. Therefore, base station 105 and UE 115 can be configured to support directional communication (e.g., beamforming communication) using multiple antennas.

[0121] Base station 105 or UE 115, or both, may operate in half-duplex mode, full-duplex mode, or a combination of both. For example, in half-duplex mode, UE 115 may transmit uplink communication or receive downlink communication during one or more TTIs. In full-duplex mode, UE 115 may transmit uplink communication and receive downlink communication simultaneously during one or more TTIs. A TTI may span one or more time resources (e.g., symbols, mini-slots, slots, etc.) and one or more frequency resources (e.g., subcarriers, carriers, etc.).

[0122] exist Figure 2 In the example, when base station 105 and UE 115 are configured with multiple antenna panels, one of which is dedicated to downlink communication and another to uplink communication, base station 105 and UE 115 may experience self-interference. Self-interference (e.g., self-interference 201) may be a result of simultaneously using multiple antenna panels for both uplink and downlink communication (e.g., in full-duplex communication). In some examples, self-interference 201 may occur due to, for example, signal leakage between transmit antenna 205 and receive antenna 210. In some other examples, self-interference may also occur due to, for example, signal leakage between transmit antenna 215 and receive antenna 210, but this self-interference (not shown) may be smaller than self-interference 201 between transmit antenna 205 and receive antenna 210.

[0123] In some situations, modifying the configuration used for full-duplex communication may be appropriate to limit self-interference during full-duplex communication for UE 115. Specifically, when UE 115 fails to receive downlink transmissions from base station 105 due to self-interference (e.g., experiencing a downlink failure), adapting the configuration used for full-duplex communication to limit self-interference for subsequent downlink transmissions may be appropriate. However, as mentioned above... Figure 1 As described, base station 105 may not have sufficient information to determine the cause of downlink failure in full-duplex mode. For example, base station 105 may not be able to determine whether the downlink failure is due to a poor channel or due to strong self-interference. Accordingly, base station 105 may not be able to take different actions to prevent downlink failure depending on the cause of the downlink failure.

[0124] As described herein, the UE 115 in the wireless communication system 100 can support efficient techniques for notifying the base station 105 of the cause of downlink failure. Specifically, when the UE 115 fails to receive downlink transmission 220 from the base station 105, the UE 115 can generate feedback (e.g., self-interference feedback 224) associated with self-interference at the UE 115. The UE 115 can transmit the self-interference feedback 224 in a report 225 (e.g., a feedback message) indicating that the UE 115 failed to receive downlink transmission 220. In other words, the UE 115 can provide additional information related to self-interference to the base station 105 along with downlink NACK. The base station 105 can use the self-interference feedback 224 to update the configuration (e.g., configuration 230) for full-duplex communication with the UE 115. In some examples, the base station 105 can transmit configuration 230 to the UE 115 based on the report 225, which includes the self-interference feedback 224. The configuration described herein or the configuration used for full-duplex communication (e.g., configuration 230) may refer to an uplink transmit beam used by UE 115 to transmit uplink transmissions during full-duplex communication, a downlink receive beam used by UE 115 to receive downlink transmissions during full-duplex communication, or MCS, PMI, RI, etc. used for uplink or downlink transmissions during full-duplex communication.

[0125] In one example, feedback associated with self-interference may include an indication of measured or estimated self-interference at UE 115, or an indication of the ratio of measured or estimated self-interference at UE 115 to (e.g., the downlink signal strength of downlink transmission 220). In this example, base station 105 may receive feedback and transmit a configuration for full-duplex communication to UE 115 based on the measured or estimated self-interference at UE 115, or the ratio of measured or estimated self-interference at UE 115 to the downlink signal strength. For example, the configuration transmitted by base station 105 to UE 115 may reduce self-interference at UE 115 to below a threshold, or reduce the ratio of measured or estimated self-interference at UE 115 to the downlink signal strength to below a threshold.

[0126] In another example, feedback associated with self-interference may include an indication of the uplink power configuration used for uplink transmissions overlapping with the failed downlink transmission 220, or an indication of a suspected cause of failure to receive downlink communication 220 (e.g., a bit indicating whether UE 115 failed to receive downlink transmission 220 due to self-interference or poor channel conditions). In this example, base station 105 may receive feedback and transmit a configuration for full-duplex communication to UE 115 based on the uplink configuration used for uplink transmissions or the indication of a suspected cause of failure to receive downlink transmissions. For example, if the suspected cause of failure to receive downlink transmission 220 is self-interference, base station 105 may update the configuration for full-duplex communication at the UE. Furthermore, base station 105 may update the uplink power configuration at the UE for subsequent uplink transmissions based on the indication of the uplink power configuration used for uplink transmissions overlapping with the failed downlink transmission 220.

[0127] In yet another example, feedback associated with self-interference may include an indication of a recommended beam pair for full-duplex communication (e.g., transmit and receive beams at UE 115) or an indication of a recommended uplink power configuration for the corresponding full-duplex link. In this example, base station 105 may receive feedback and transmit a configuration for full-duplex communication to UE 115 based on the recommended beam pair and the recommended uplink power configuration. For example, base station 105 may instruct UE 115 to use the recommended beam pair for full-duplex communication, or base station 105 may instruct UE 115 to use a beam pair selected based on the recommended beam pair for full-duplex communication. Similarly, base station 105 may instruct UE 115 to use the recommended uplink power configuration for full-duplex communication, or base station 105 may instruct UE 115 to use an uplink power configuration selected based on the recommended uplink power configuration for full-duplex communication.

[0128] In another example, if UE 115 fails to receive downlink transmission 220 because it transmits an uplink unpermitted transmission concurrently with downlink transmission (e.g., over overlapping time resources or overlapping in the time domain), feedback associated with self-interference may include an indication that UE 115 transmitted an unpermitted transmission overlapping with downlink transmission 220 in the time domain. Accordingly, base station 105 may be able to infer the cause of the downlink failure (e.g., self-interference). In this example, base station 105 may receive feedback and, based on the indication that UE 115 transmitted an unpermitted transmission overlapping with downlink transmission 220 in the time domain, transmit configuration for full-duplex communication to UE 115.

[0129] Without an indication that UE 115 transmitted an unpermitted transmission that overlaps with downlink transmission 220 in the time domain, base station 105 may not be able to determine that UE 115 transmitted an unpermitted transmission (e.g., because the unpermitted transmission may be pre-configured by RRC). Specifically, UE 115 may not transmit an unpermitted transmission on every available resource pre-allocated for unpermitted transmissions (e.g., UE 115 may skip unpermitted transmissions when there is no data or very little data in the buffer at UE 115). Therefore, base station 105 may not clearly understand whether an unpermitted transmission was transmitted or whether self-interference caused the downlink failure. In some examples, the base station may blindly detect the power on resources allocated for unpermitted uplink transmissions to estimate whether an unpermitted uplink transmission was transmitted. However, such an estimation may be unavailable or inaccurate due to noise or interference. Furthermore, if the UE 115 is connected to different base stations (or cells) for downlink and uplink communication, this estimate may not be available (for example, because the downlink base station may not be aware of uplink transmissions being received by another base station at the same time).

[0130] In some aspects, UE 115 may transmit a report 225 with feedback associated with self-interference in a control channel (e.g., Physical Uplink Control Channel (PUCCH)) or a data channel (e.g., Physical Uplink Shared Channel (PUSCH)). Furthermore, UE 115 may also transmit feedback associated with self-interference based on a request from base station 105. As an example, UE 115 may transmit a NACK in the PUCCH, and base station 105 may transmit permission to UE 115 to allocate resources for transmitting feedback associated with self-interference in the PUSCH. UE 115 may then transmit the feedback associated with self-interference in the PUSCH (e.g., in a MAC control element (MAC-CE) within the PUSCH). Additionally or alternatively, base station 105 may configure UE 115 to transmit or avoid transmitting feedback associated with self-interference. For example, base station 105 may transmit RRC signaling to UE 115 instructing whether UE 115 wants to include feedback associated with self-interference in a report or feedback message. Base station 105 can also be configured to include information or indications in the feedback associated with self-interference. (For example, after configuration, if UE 115 is configured to send feedback associated with self-interference) UE 115 can then autonomously send the feedback associated with self-interference as well as NACK.

[0131] Figure 3 An example of a process flow 300 supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure is described. The process flow 300 can be implemented respectively with reference to... Figure 1 and Figure 2 Various aspects of the wireless communication system 100 and the wireless communication system 200 are described. Figure 3 In the example, UE 115 can operate in half-duplex mode or full-duplex mode, or a combination of both. Process flow 300 can be based on a configuration performed by base station 105 and implemented by UE 115 to facilitate power savings for UE 115 when operating in full-duplex mode. Process flow 300 can also be based on a configuration performed by base station 105 and implemented by UE 115 to facilitate highly reliable and low-latency wireless communication.

[0132] In the following description of process flow 300, operations between base station 105 and UE 115 may be transmitted in a different order than the example order shown, or operations performed by base station 105 and UE 115 may be performed in a different order or at different times. Some operations may also be omitted from process flow 300, and other operations may be added to process flow 300. Base station 105 and UE 115 may be respectively as shown in reference Figure 1 and Figure 2 Examples of base station 105 and UE 115 described.

[0133] At 305, base station 105 may transmit downlink transmissions to UE 115. At 310, UE 115 may identify that it has failed to successfully decode the downlink transmission from base station 105. At 315, UE 115 may generate feedback associated with self-interference at UE 115 based on the failure to successfully decode the downlink transmission and based on UE 115 operating in full-duplex mode. UE 115 may then generate a report or feedback message indicating that it has failed to successfully decode the downlink transmission and to base station 105, wherein the report includes feedback associated with self-interference at UE 115 based on UE 115 operating in full-duplex mode. At 320, UE 115 may transmit a report with feedback associated with self-interference at UE 115 to base station 105. At 325, base station 105 may transmit a report based on feedback associated with self-interference at UE 115, and UE 115 may receive a configuration for full-duplex communication between UE and base station based on the report.

[0134] In some scenarios, UE 115 may generate feedback including a measurement of self-interference at UE 115, a ratio of self-interference at UE 115 to the downlink signal strength transmitted downlink, or both, and transmit this feedback to base station 105. In such scenarios, base station 105 may transmit configuration for full-duplex communication to UE 115 based on the measurement of self-interference at UE, the ratio of self-interference at UE to the downlink signal strength, or both.

[0135] In some cases, UE 115 may determine that the UE failed to successfully decode a downlink transmission due to self-interference caused by uplink transmissions from UE 115. Therefore, UE 115 may generate feedback including an uplink power configuration at the UE for transmitting uplink transmissions, an indication that the UE failed to successfully decode a downlink transmission at least partially due to self-interference, or both; and transmit this feedback to base station 105. In such cases, base station 105 may transmit a configuration for full-duplex communication to UE 115 based on the uplink power configuration, the indication that the UE failed to successfully decode a downlink transmission at least partially due to self-interference, or both.

[0136] In some scenarios, UE 115 may generate feedback including a recommended beam pair for full-duplex communication with the base station, a recommended uplink power configuration for full-duplex communication with the base station, or both. In such scenarios, base station 105 may transmit a configuration for full-duplex communication to UE 115 based on the recommended beam pair for full-duplex communication, the recommended uplink power configuration for full-duplex communication, or both.

[0137] In some scenarios, UE 115 may transmit SPS uplink transmissions that overlap with downlink transmissions in the time domain (e.g., uplink transmission is not permitted). Therefore, UE 115 may generate feedback including an indication that the UE has transmitted an SPS uplink transmission that overlaps with downlink transmissions in the time domain. In such cases, base station 105 may transmit configuration for full-duplex communication to UE 115 based on the indication that the UE has transmitted an SPS uplink transmission that overlaps with downlink transmissions in the time domain.

[0138] Figure 4 A block diagram 400 illustrates a device 405 supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure. Device 405 may be an example of various aspects of UE 115 as described herein. Device 405 may include a receiver 410, a UE communication manager 415, and a transmitter 420. Device 405 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0139] Receiver 410 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to flow control feedback for full-duplex communication). This information can be transmitted to other components of device 405. Receiver 410 can be a reference... Figure 7 Examples of various aspects of the transceiver 720 described. The receiver 410 may utilize a single antenna or a set of antennas.

[0140] The UE communication manager 415 may be implemented as an integrated circuit or chipset for device 405, and the receiver 410 and transmitter 420 may be implemented as analog components (e.g., amplifiers, filters, antennas) coupled to the modem of device 405 to enable wireless transmission and reception. Actions performed by the UE communication manager 415 as described herein may be implemented to achieve one or more potential enhancements. At least one implementation may enable the UE communication manager 415 to support full-duplex communication with limited self-interference when device 405 is operating in full-duplex mode.

[0141] For example, the UE communication manager 415 may identify that device 405 has failed to successfully decode a downlink transmission from a base station; based on this identification and based on device 405 operating in full-duplex mode, generate feedback associated with self-interference at device 405; generate a report indicating that device 405 has failed to successfully decode the downlink transmission, the report including feedback associated with self-interference at device 405 based on device 405 operating in full-duplex mode; and transmit the report with feedback associated with self-interference at device 405 to the base station. Based on the transmission of the report including feedback associated with self-interference at device 405, one or more processors of device 405 (e.g., processors controlling UE communication manager 415 or processors merged with UE communication manager 415) may experience power savings (e.g., increased battery life) because the UE can successfully receive subsequent downlink transmissions and does not need to continue monitoring for retransmissions.

[0142] Additionally or alternatively, the UE communication manager 415 may generate a report including feedback related to self-interference at device 405 based on full-duplex mode; and a report transmitting feedback related to self-interference at device 405. Based on the report transmitting feedback related to self-interference at the UE, one or more processors of device 405 (e.g., processors controlling UE communication manager 415 or processors merged with UE communication manager 415) may experience power savings (e.g., increased battery life) because device 405 can successfully receive subsequent downlink transmissions and does not need to continue monitoring for retransmissions.

[0143] The UE communication manager 415 may be an example of a means for performing aspects of managing flow control feedback for full-duplex communication as described herein. The UE communication manager 415 or its sub-components may be implemented in hardware (e.g., in a communication management circuitry system). This circuitry system may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), 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 herein. The UE communication manager 415 may be an example of aspects of the UE communication manager 710 described herein.

[0144] The UE communication manager 415 or its sub-components 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 functionality of the UE communication manager 415 or its sub-components may be performed by a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device designed to perform the functions described in this disclosure, discrete gate or transistor logic, discrete hardware components, or any combination thereof. In some examples, the UE communication manager 415 may be configured to use or otherwise cooperate with the receiver 410, transmitter 420, or both to perform various operations (e.g., receive, determine, transmit).

[0145] The UE communication manager 415 or its sub-components may be physically located in various locations, including being distributed such that parts of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of this disclosure, the UE communication manager 415 or its sub-components may be separate and distinct components. In some examples, according to various aspects of this disclosure, the UE communication manager 415 or its sub-components may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, transceivers, network servers, other computing devices, one or more other components described in this disclosure, or combinations thereof.

[0146] Transmitter 420 can transmit signals generated by other components of device 405. In some examples, transmitter 420 may coexist with receiver 410 in a transceiver module. For example, transmitter 420 may be a reference... Figure 7 Examples of various aspects of the transceiver 720 described. The transmitter 420 may utilize a single antenna or an antenna set.

[0147] Figure 5 A block diagram 500 of a device 505 supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure is shown. Device 505 may be an example of aspects of device 405 or UE 115 as described herein. Device 505 may include a receiver 510, a UE communication manager 515, and a transmitter 535. Device 505 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0148] Receiver 510 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to flow control feedback for full-duplex communication). This information can be transmitted to other components of device 505. Receiver 510 can be a reference... Figure 7Examples of various aspects of the transceiver 720 described. The receiver 510 may utilize a single antenna or a set of antennas.

[0149] UE communication manager 515 may be an example of aspects of UE communication manager 415 as described herein. UE communication manager 515 may include flow control manager 520, feedback generator 525, and flow control report manager 530. UE communication manager 515 may be an example of aspects of UE communication manager 710 as described herein.

[0150] Flow control manager 520 can identify when the UE fails to successfully decode a downlink transmission from the base station. Feedback generator 525 can generate feedback associated with self-interference at the UE based on the identification and based on the UE's operation in full-duplex mode, and generate a report indicating that the UE failed to successfully decode the downlink transmission, the report including feedback associated with self-interference at the UE based on the UE's operation in full-duplex mode. Flow control report manager 530 can transmit the report with feedback associated with self-interference at the UE to the base station.

[0151] Additionally or alternatively, the feedback generator 525 may generate feedback associated with self-interference at device 505 based on device 505's failure to successfully decode a downlink transmission in full-duplex mode, and generate a report including the feedback associated with self-interference at device 505 based on full-duplex mode. The flow control report manager 530 may transmit a report with feedback associated with self-interference at device 505.

[0152] Transmitter 535 can transmit signals generated by other components of device 505. In some examples, transmitter 535 may coexist with receiver 510 in a transceiver module. For example, transmitter 535 may be a reference... Figure 7 Examples of various aspects of the transceiver 720 described. The transmitter 535 may utilize a single antenna or an antenna set.

[0153] Figure 6 A block diagram 600 is shown of a UE communication manager 605 supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure. The UE communication manager 605 may be an example of aspects of the UE communication manager 415, UE communication manager 515, or UE communication manager 710 described herein. The UE communication manager 605 may include a flow control manager 610, a feedback generator 615, a flow control report manager 620, a no-permission transmission manager 625, a full-duplex configuration manager 630, and an RRC manager 635. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0154] Flow control manager 610 can identify when the UE fails to successfully decode a downlink transmission from the base station. Feedback generator 615 can generate feedback associated with self-interference at the UE based on the identification and based on the UE operating in full-duplex mode. In some examples, feedback generator 615 can generate a report indicating that the UE failed to successfully decode a downlink transmission, the report including feedback associated with self-interference at the UE based on the UE operating in full-duplex mode. Flow control report manager 620 can transmit a report with feedback associated with self-interference at the UE to the base station. Additionally or alternatively, feedback generator 615 can generate feedback associated with self-interference at the UE based on the UE failing to successfully decode a downlink transmission when in full-duplex mode. In some examples, feedback generator 615 can generate a report including feedback associated with self-interference at the UE based on full-duplex mode. Flow control report manager 620 can transmit a report with feedback associated with self-interference at the UE.

[0155] In some examples, feedback generator 615 may generate feedback including a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength of the downlink transmission, or both. In some examples, flow control manager 610 may determine that the UE failed to successfully decode the downlink transmission based on self-interference caused by uplink transmissions from the UE, and feedback generator 615 may generate feedback including an uplink power configuration at the UE used for transmitting the uplink transmission, an indication that the UE failed to successfully decode the downlink transmission at least in part based on self-interference, or both. In some cases, feedback generator 615 may generate feedback including a recommended beampair for full-duplex communication with the base station, a recommended uplink power configuration for full-duplex communication with the base station, or both. Unpermitted transmission manager 625 may transmit a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain. Feedback generator 615 may then generate feedback including an indication that the UE transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain.

[0156] Full-duplex configuration manager 630 can receive configuration for full-duplex communication between the UE and the base station based on transmitting a report with feedback associated with self-interference at the UE to the base station. In some examples, flow control report manager 620 can transmit a report with feedback associated with self-interference at the UE to the base station in a control channel, a data channel, or both. In some examples, flow control report manager 620 can transmit a report to the base station in a first phase in the control channel; receive permission to allocate resources in the data channel for the UE to transmit the report in a second phase; and transmit the report in the data channel based on receiving the permission, wherein the second phase of the report includes feedback associated with self-interference at the UE. RRC manager 635 can receive RRC signaling instructing the UE to include feedback associated with self-interference at the UE in the report when the UE is operating in full-duplex mode.

[0157] Figure 7 A diagram is shown of a system 700 including a device 705 supporting flow control feedback for full-duplex communication, according to one or more aspects of this disclosure. Device 705 may be an example of device 405, device 505, or UE 115 as described herein, or a component including the aforementioned devices. Device 705 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a UE communication manager 710, an I / O controller 715, a transceiver 720, an antenna 725, a memory 730, and a processor 740. These components may be in electronic communication via one or more buses (e.g., bus 745).

[0158] At least one implementation enables the UE communication manager 710 to support full-duplex communication with limited self-interference. For example, the UE communication manager 710 may identify that device 705 has failed to successfully decode a downlink transmission from a base station; generate feedback associated with self-interference at device 705 based on the identification and based on device 705 operating in full-duplex mode; generate a report indicating that device 705 has failed to successfully decode the downlink transmission, the report including feedback associated with self-interference at device 705 based on device 705 operating in full-duplex mode; and transmit the report with feedback associated with self-interference at device 705 to the base station. Based on the transmission of the report including feedback associated with self-interference at device 705, one or more processors of device 705 (e.g., processors controlling UE communication manager 710 or those merged with UE communication manager 710) may experience power savings (e.g., increased battery life) because device 705 can successfully receive subsequent downlink transmissions and does not need to continue monitoring for retransmissions.

[0159] Additionally or alternatively, the UE communication manager 710 may generate feedback associated with self-interference at device 705 based on the device 705's failure to successfully decode a downlink transmission in full-duplex mode; generate a report including the feedback associated with self-interference at device 705 based on full-duplex mode; and transmit the report with feedback associated with self-interference at device 705. Based on the transmission of the report including feedback associated with self-interference at device 705, one or more processors of device 705 (e.g., processors controlling UE communication manager 710 or those merged with UE communication manager 710) may experience power savings (e.g., increased battery life) because device 705 can successfully receive subsequent downlink transmissions and does not need to continue monitoring for retransmissions.

[0160] I / O controller 715 manages the input and output signals of device 705. I / O controller 715 can also manage peripheral devices not integrated into device 705. In some cases, I / O controller 715 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 715 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, I / O controller 715 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, I / O controller 715 may be implemented as part of a processor. In some cases, a user may interact with device 705 via I / O controller 715 or via hardware components controlled by I / O controller 715.

[0161] Transceiver 720 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 720 may represent a wireless transceiver and be able to communicate bidirectionally with another wireless transceiver. Transceiver 720 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna. In some cases, the wireless device may include a single antenna 725. However, in some cases, the device may have more than one antenna 725, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0162] Memory 730 may include random access memory (RAM) and read-only memory (ROM). Memory 730 may store computer-readable, computer-executable code 735, including instructions that, when executed, cause a processor to perform the various functions described herein. In some cases, memory 730 may, in particular, include a basic input / output system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices. In some examples, memory 730 may temporarily store information (e.g., uplink control information, uplink data, etc.). Code 735 may include instructions for implementing various aspects of this disclosure, including instructions for supporting wireless communication. Code 735 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 735 may not be directly executed by processor 740, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0163] Processor 740 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, processor 740 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 740. Processor 740 may be configured to execute computer-readable instructions stored in memory (e.g., memory 730) to cause device 705 to perform various functions (e.g., functions or tasks supporting flow control feedback for full-duplex communication).

[0164] Figure 8 A block diagram 800 of a device 805 supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure is shown. Device 805 may be an example of aspects of a base station 105 as described herein. Device 805 may include a receiver 810, a base station communication manager 815, and a transmitter 820. 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).

[0165] Receiver 810 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to flow control feedback for full-duplex communication). This information can be transmitted to other components of device 805. Receiver 810 can be a reference... Figure 11 Examples of various aspects of the transceiver 1120 described herein. The receiver 810 may utilize a single antenna or a set of antennas.

[0166] The base station communication manager 815 can transmit downlink transmissions to the UE; receive from the UE a report indicating that the UE failed to successfully decode the downlink transmission, wherein the report includes feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmit configuration for full-duplex communication between the UE and the base station to the UE based on the received report with feedback related to self-interference. The base station communication manager 815 may be an example of aspects of the base station communication manager 1110 described herein.

[0167] Additionally or alternatively, the base station communication manager 815 may transmit downlink transmissions to the UE; receive reports from the UE, wherein the reports include feedback related to self-interference at the UE based on the UE's operation in full-duplex mode; and transmit configuration for full-duplex communication between the UE and the base station based on the reports including the feedback related to self-interference. The base station communication manager 815 may be an example of aspects of the base station communication manager 1110 described herein.

[0168] The base station communication manager 815 or its sub-components 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 functionality of the base station communication manager 815 or its sub-components may be performed by a general-purpose processor, DSP, application-specific integrated circuit (ASIC), 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.

[0169] The base station communication manager 815 or its sub-components may be physically located at various locations, including being distributed such that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of this disclosure, the base station communication manager 815 or its sub-components may be separate and distinct components. In some examples, according to various aspects of this disclosure, the base station communication manager 815 or its sub-components may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, transceivers, network servers, other computing devices, one or more other components described in this disclosure, or combinations thereof.

[0170] Transmitter 820 can transmit signals generated by other components of device 805. In some examples, transmitter 820 may coexist with receiver 810 in a transceiver module. For example, transmitter 820 may be a reference... Figure 11 Examples of various aspects of the transceiver 1120 described herein. The transmitter 820 may utilize a single antenna or an antenna set.

[0171] Figure 9A block diagram 900 illustrates a device 905 supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure. Device 905 may be an example of aspects of device 805 or base station 105 as described herein. Device 905 may include a receiver 910, a base station communication manager 915, and a transmitter 935. Device 905 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0172] Receiver 910 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to flow control feedback for full-duplex communication). This information can be transmitted to other components of device 905. Receiver 910 can be a reference... Figure 11 Examples of various aspects of the transceiver 1120 described herein. The receiver 910 may utilize a single antenna or a set of antennas.

[0173] Base station communication manager 915 may be an example of aspects of base station communication manager 815 as described herein. Base station communication manager 915 may include downlink transmission manager 920, flow control report manager 925, and full-duplex configuration manager 930. Base station communication manager 915 may be an example of aspects of base station communication manager 1110 as described herein.

[0174] Downlink transmission manager 920 can transmit downlink transmissions to the UE. Flow control report manager 925 can receive from the UE a report indicating that the UE failed to successfully decode a downlink transmission, wherein the report includes feedback related to self-interference at the UE based on the UE operating in full-duplex mode. Full-duplex configuration manager 930 can transmit configurations for full-duplex communication between the UE and the base station to the UE based on the received report with feedback related to self-interference.

[0175] Additionally or alternatively, the downlink transmission manager 920 may transmit downlink transmissions to the UE. The flow control report manager 925 may receive reports from the UE, wherein the reports include feedback related to self-interference at the UE based on the UE's operation in full-duplex mode. The full-duplex configuration manager 930 may transmit configurations for full-duplex communication between the UE and the base station to the UE based on the reports including feedback related to self-interference.

[0176] Transmitter 935 can transmit signals generated by other components of device 905. In some examples, transmitter 935 may coexist with receiver 910 in a transceiver module. For example, transmitter 935 may be a reference... Figure 11 Examples of various aspects of the transceiver 1120 described. The transmitter 935 may utilize a single antenna or an antenna set.

[0177] Figure 10 A block diagram 1000 of a base station communication manager 1005 supporting flow control feedback for full-duplex communication, according to one or more aspects of this disclosure, is shown. The base station communication manager 1005 may be an example of aspects of the base station communication manager 815, base station communication manager 915, or base station communication manager 1110 described herein. The base station communication manager 1005 may include a downlink transmission manager 1010, a flow control reporting manager 1015, a full-duplex configuration manager 1020, and an RRC manager 1025. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0178] Downlink transmission manager 1010 can transmit downlink transmissions to the UE. Flow control report manager 1015 can receive from the UE a report indicating that the UE failed to successfully decode the downlink transmission, wherein the report includes feedback related to self-interference at the UE based on the UE operating in full-duplex mode. Full-duplex configuration manager 1020 can transmit configuration for full-duplex communication between the UE and the base station to the UE based on the received report with feedback related to self-interference. Additionally or alternatively, downlink transmission manager 1010 can transmit downlink transmissions to the UE. Flow control report manager 1015 can receive a report from the UE, wherein the report includes feedback related to self-interference at the UE based on the UE operating in full-duplex mode. Full-duplex configuration manager 1020 can transmit configuration for full-duplex communication between the UE and the base station to the UE based on the report including feedback related to self-interference.

[0179] In some examples, feedback associated with self-interference at the UE includes: a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength of the downlink transmission, or both. In such examples, the full-duplex configuration manager 1020 may transmit a configuration for full-duplex communication to the UE based on a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength, or both. In some examples, feedback associated with self-interference at the UE includes: an uplink power configuration at the UE used to transmit uplink transmissions that cause self-interference in the downlink transmission, an indication that the UE has failed to successfully decode the downlink transmission at least in part due to self-interference, or both. In such examples, the full-duplex configuration manager 1020 may transmit a configuration for full-duplex communication to the UE based on an uplink power configuration, an indication that the UE has failed to successfully decode the downlink transmission due to self-interference, or both.

[0180] In some examples, feedback associated with self-interference at the UE includes: a recommended beam pair for full-duplex communication, a recommended uplink power configuration for full-duplex communication, or both. In such examples, the full-duplex configuration manager 1020 may transmit a configuration for full-duplex communication to the UE based on the recommended beam pair for full-duplex communication, the recommended uplink power configuration for full-duplex communication, or both. In some examples, feedback associated with self-interference at the UE includes: an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with downlink transmission in the time domain. In such examples, the full-duplex configuration manager 1020 may transmit a configuration for full-duplex communication to the UE based on the indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with downlink transmission in the time domain.

[0181] In some examples, the flow control report manager 1015 may receive reports with feedback associated with self-interference at the UE in a control channel, a data channel, or both. In some examples, the flow control report manager 1015 may have a first phase of receiving the report from the UE in the control channel; a second phase of transmitting permission, which allocates resources in the data channel for the UE to transmit the report; and a second phase of receiving the report in the data channel based on the transmitted permission, wherein the second phase of the report includes feedback associated with self-interference at the UE. The RRC manager 1025 may transmit RRC signaling, which instructs the UE to include feedback associated with self-interference at the UE in the report when the UE is operating in full-duplex mode.

[0182] Figure 11 A diagram of a system 1100 including a device 1105 supporting flow control feedback for full-duplex communication, according to one or more aspects of this disclosure, is shown. Device 1105 may be an example of device 805, device 905, or base station 105 as described herein, or may include components thereof. Device 1105 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a base station communication manager 1110, a network communication manager 1115, a transceiver 1120, an antenna 1125, a memory 1130, a processor 1140, and an inter-station communication manager 1145. These components may be in electronic communication via one or more buses (e.g., bus 1150).

[0183] The base station communication manager 1110 can transmit downlink transmissions to the UE; receive from the UE a report indicating that the UE failed to successfully decode the downlink transmission, wherein the report includes feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmit configuration for full-duplex communication between the UE and the base station to the UE based on the received report with feedback related to self-interference.

[0184] Additionally or alternatively, the base station communication manager 1110 may transmit downlink transmissions to the UE; receive reports from the UE, wherein the reports include feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmit configuration for full-duplex communication between the UE and the base station to the UE based on the reports including the feedback related to self-interference.

[0185] The network communication manager 1115 can manage communication with the core network (e.g., via one or more wired backhaul links). For example, the network communication manager 1115 can manage the delivery of data communication by client devices (such as one or more UEs 115).

[0186] Transceiver 1120 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 1120 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1120 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna.

[0187] In some cases, the wireless device may include a single antenna 1125. However, in other cases, the device may have more than one antenna 1125, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0188] Memory 1130 may include RAM, ROM, or a combination thereof. Memory 1130 may store computer-readable code 1135 including instructions that, when executed by a processor (e.g., processor 1140), cause the device to perform the various functions described herein. In some cases, memory 1130 may, in particular, include a BIOS that controls basic hardware or software operation, such as interaction with peripheral components or devices. Code 1135 may include instructions for implementing aspects of this disclosure, including instructions for supporting wireless communication. Code 1135 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1135 may not be directly executable by processor 1140, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0189] Processor 1140 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, processor 1140 may be configured to use a memory controller to operate a memory array. In some cases, the memory controller may be integrated into processor 1140. Processor 1140 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1130) to cause device 1105 to perform various functions (e.g., functions or tasks supporting flow control feedback for full-duplex communication).

[0190] Inter-site communication manager 1145 manages communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with UE 115. For example, inter-site communication manager 1145 may coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, inter-site communication manager 1145 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0191] Figure 12 A flowchart illustrating a method 1200 for supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure is shown. Operation of method 1200 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1200 may be implemented by, as described in reference... Figures 4 to 7 The described communication manager is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the following functions. Alternatively or alternatively, the UE can use dedicated hardware to perform aspects of the following functions.

[0192] At step 1205, the UE can indicate that it failed to successfully decode the downlink transmission from the base station. The operation at step 1205 can be performed according to the methods described herein. In some examples, aspects of the operation at step 1205 can be determined by referring to... Figures 4 to 7 The described flow control manager is used to execute this.

[0193] At 1210, the UE can generate feedback associated with self-interference at the UE based on an identifier and based on the UE's operation in full-duplex mode. The operation of 1210 can be performed according to the methods described herein. In some examples, aspects of the operation of 1210 can be derived from, as referenced... Figures 4 to 7 The described feedback generator is used for execution.

[0194] At 1215, the UE may generate a report indicating that the UE has failed to successfully decode a downlink transmission. This report includes feedback related to self-interference at the UE based on the UE's operation in full-duplex mode. The operation of 1215 may be performed according to the methods described herein. In some examples, aspects of the operation of 1215 may be determined by reference to... Figures 4 to 7 The described feedback generator is used for execution.

[0195] At 1220, the UE may transmit a report to the base station containing feedback associated with self-interference at the UE. The operation of 1220 may be performed according to the methods described herein. In some examples, aspects of the operation of 1220 may be determined by reference to... Figures 4 to 7 The described flow control report manager is used to perform this.

[0196] Figure 13 A flowchart illustrating a method 1300 for supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure is shown. Operation of method 1300 may be implemented by a base station 105 or its components as described herein. For example, operation of method 1300 may be implemented by, as described in reference... Figures 8 to 11 The described communication manager is used to perform this. In some examples, the base station can execute a set of instructions to control the functional elements of the base station to perform the following functions. Additionally or alternatively, the base station may use dedicated hardware to perform aspects of the following functions.

[0197] At point 1305, the base station can transmit downlink transmissions to the UE. The operation of point 1305 can be performed according to the methods described herein. In some examples, aspects of the operation of point 1305 can be derived from, as referenced... Figures 8 to 11 The described downlink transmission manager is used to perform this.

[0198] At 1310, the base station may receive from the UE a report indicating that the UE has failed to successfully decode a downlink transmission, wherein the report includes feedback related to self-interference at the UE based on the UE's operation in full-duplex mode. The operation of 1310 may be performed according to the methods described herein. In some examples, aspects of the operation of 1310 may be derived from, as referenced... Figures 8 to 11 The described flow control report manager is used to perform this.

[0199] At 1315, the base station may transmit a configuration for full-duplex communication between the UE and the base station to the UE based on a report received with feedback associated with self-interference. The operation of 1315 may be performed according to the methods described herein. In some examples, aspects of the operation of 1315 may be as described in reference... Figures 8 to 11 The full-duplex configuration manager described is used to execute this.

[0200] Figure 14A flowchart illustrating a method 1400 for supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure is shown. Operation of method 1400 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1400 may be implemented by, as described in reference... Figures 4 to 7 The described communication manager is used for execution. In some examples, the device can execute a set of instructions to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the device can use dedicated hardware to perform aspects of the functions described below.

[0201] At 1410, the UE may generate feedback associated with self-interference at that UE based on its failure to successfully decode a downlink transmission when in full-duplex mode. The operation of 1410 may be performed according to the methods described herein. In some examples, aspects of the operation of 1410 may be derived from, as referenced... Figures 4 to 7 The described feedback generator is used for execution.

[0202] At point 1415, the UE can generate a report that includes feedback related to self-interference at the UE based on full-duplex mode. The operation of point 1415 can be performed according to the methods described herein. In some examples, aspects of the operation of point 1415 can be derived from, as referenced... Figures 4 to 7 The described feedback generator is used for execution.

[0203] At 1420, the device can transmit a report with feedback associated with self-interference at the UE. The operation of 1420 can be performed according to the methods described herein. In some examples, aspects of the operation of 1420 can be determined by reference to... Figures 4 to 7 The described flow control report manager is used to perform this.

[0204] Figure 15 A flowchart illustrating a method 1500 for supporting flow control feedback for full-duplex communication according to one or more aspects of this disclosure is shown. Operation of method 1500 may be implemented by a base station 105 or its components as described herein. For example, operation of method 1500 may be implemented by, as referred to... Figures 8 to 11 The described communication manager is used for execution. In some examples, the device can execute a set of instructions to control the functional elements of the device to perform the functions described below. Additionally or alternatively, the device can use dedicated hardware to perform aspects of the functions described below.

[0205] At point 1505, the base station can transmit downlink transmissions to the UE. The operation of point 1505 can be performed according to the methods described herein. In some examples, aspects of the operation of point 1505 can be derived from, as referenced... Figures 8 to 11 The described downlink transmission manager is used to perform this.

[0206] At 1510, the base station can receive a report from the UE, which includes feedback related to self-interference at the UE based on the UE's operation in full-duplex mode. The operation of 1510 can be performed according to the methods described herein. In some examples, aspects of the operation of 1510 can be determined by referring to... Figures 8 to 11 The described flow control report manager is used to perform this.

[0207] At point 1515, the base station may transmit a configuration for full-duplex communication between the UE and the base station to the UE based on a report including feedback associated with self-interference. The operation of point 1515 may be performed according to the methods described herein. In some examples, aspects of the operation of point 1515 may be provided as referenced... Figures 8 to 11 The full-duplex configuration manager described is used to execute this.

[0208] It should be noted that the methods described in this paper describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are also possible. Furthermore, aspects from two or more methods can be combined.

[0209] The aspects of the following examples can be combined with any of the previous examples or aspects described herein.

[0210] Aspect 1: A method for performing wireless communication at a UE, comprising: generating feedback associated with self-interference at the UE based at least in part on the UE's failure to successfully decode a downlink transmission when in full-duplex mode; generating a report including feedback associated with self-interference at the UE based at least in part on full-duplex mode; and transmitting the report having feedback associated with self-interference at the UE.

[0211] Aspect 2: The method of aspect 1, wherein the report indicates that the UE failed to successfully decode the downlink transmission.

[0212] Aspect 3: The method of Aspects 1 and 2, wherein generating feedback associated with self-interference at the UE includes generating feedback including a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength transmitted in the downlink, or both.

[0213] Aspect 4: The method of aspects 1 to 3 further includes: determining that the UE failed to successfully decode the downlink transmission at least in part based on self-interference caused by uplink transmission from the UE, wherein generating feedback associated with the self-interference at the UE includes: generating feedback including uplink power configuration at the UE used for transmitting uplink transmission, an indication that the UE failed to successfully decode the downlink transmission at least in part based on self-interference, or both.

[0214] Aspect 5: The method of aspects 1 to 4, wherein generating feedback associated with self-interference at the UE includes generating feedback including a recommended beam pair for full-duplex communication with the base station, a recommended uplink power configuration for full-duplex communication with the base station, or both.

[0215] Aspect 6: The method of aspects 1 to 5 further includes: transmitting a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain, wherein generating feedback associated with self-interference at the UE includes: generating feedback including an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain.

[0216] Aspect 7: The method of aspects 1 to 6 further includes: receiving a configuration for full-duplex communication between the UE and the base station based at least in part on a report that has transmitted feedback having self-interference associated with the UE.

[0217] Aspect 8: The method of aspects 1 to 7 further includes: receiving RRC signaling, the RRC signaling instructing the UE to include feedback associated with self-interference at the UE in a report when the UE is operating in full-duplex mode.

[0218] Aspect 9: A method for wireless communication at a base station, comprising: transmitting downlink transmissions to a UE; receiving a report from the UE including feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmitting a configuration for full-duplex communication between the UE and the base station to the UE based at least in part on the report including the feedback related to self-interference.

[0219] Aspect 10: The method of aspect 9, wherein the report indicates that the UE failed to successfully decode the downlink transmission.

[0220] Aspect 11: The method of Aspects 9 and 10, wherein the feedback associated with self-interference at the UE includes: a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength of the downlink transmission, or both, and wherein transmitting configuration for full-duplex communication to the UE includes: transmitting configuration for full-duplex communication to the UE based at least in part on a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength, or both.

[0221] Aspect 12: The method of aspects 9 to 11, wherein the feedback associated with self-interference at the UE includes: an uplink power configuration at the UE used to transmit uplink transmissions that cause self-interference to downlink transmissions, an indication that the UE has failed to successfully decode downlink transmissions at least in part based on self-interference, or both, and wherein transmitting configuration for full-duplex communication to the UE includes: transmitting configuration for full-duplex communication to the UE at least in part based on uplink power configuration, an indication that the UE has failed to successfully decode downlink transmissions at least in part based on self-interference, or both.

[0222] Aspect 13: The method of aspects 9 to 12, wherein the feedback associated with self-interference at the UE includes: a recommended beam pair for full-duplex communication, a recommended uplink power configuration for full-duplex communication, or both, and wherein transmitting the configuration for full-duplex communication to the UE includes: transmitting the configuration for full-duplex communication to the UE at least in part based on the recommended beam pair for full-duplex communication, the recommended uplink power configuration for full-duplex communication, or both.

[0223] Aspect 14: The method of aspects 9 to 13, wherein the feedback associated with self-interference at the UE includes: an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain, and wherein transmitting the configuration for full-duplex communication to the UE includes: transmitting the configuration for full-duplex communication to the UE at least in part based on the UE's indication that a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain.

[0224] Aspect 15: The method of aspects 9 to 14 further includes: transmitting RRC signaling, the RRC signaling instructing the UE to include feedback associated with self-interference at the UE in a report when the UE is operating in full-duplex mode.

[0225] Aspect 16: An apparatus for wireless communication, comprising at least one means for performing the method as described in any one of aspects 9 to 15.

[0226] Aspect 17: An apparatus for wireless communication, comprising a processor and a memory coupled to the processor, the processor and the memory being configured to perform a method as described in any one of Aspects 1 to 8.

[0227] Aspect 18: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in any one of Aspects 1 to 8.

[0228] Aspect 19: An apparatus for wireless communication, comprising at least one means for performing a method as described in any one of aspects 9 to 15.

[0229] Aspect 20: An apparatus for wireless communication, comprising a processor and a memory coupled to the processor, the processor and the memory being configured to perform the method of any one of aspects 9 to 15.

[0230] Aspect 21: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in any one of Aspects 9 to 15.

[0231] Aspect 22: A method for wireless communication at a UE operating in full-duplex mode, comprising: generating feedback associated with self-interference at the UE based at least in part on the UE's failure to successfully decode a downlink transmission and based on the UE's operation in full-duplex mode; generating a report including feedback associated with self-interference at the UE based at least in part on the UE's operation in full-duplex mode; and transmitting the report having feedback associated with self-interference at the UE.

[0232] Aspect 23: The method of aspect 22, wherein the report indicates that the UE failed to successfully decode the downlink transmission.

[0233] Aspect 24: The method of aspects 22 and 23, wherein generating feedback associated with self-interference at the UE includes generating feedback including a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength transmitted in the downlink, or both.

[0234] Aspect 25: The method of aspects 22 to 24 further includes: determining that the UE failed to successfully decode the downlink transmission at least in part based on self-interference caused by uplink transmissions from the UE, wherein generating feedback associated with the self-interference at the UE includes: generating feedback including an uplink power configuration at the UE used for transmitting uplink transmissions, an indication that the UE failed to successfully decode the downlink transmission at least in part based on self-interference, or both.

[0235] Aspect 26: The method of aspects 22 to 25, wherein generating feedback associated with self-interference at the UE includes generating feedback including a recommended beam pair for full-duplex communication with the base station, a recommended uplink power configuration for full-duplex communication with the base station, or both.

[0236] Aspect 27: The method of aspects 22 to 26 further includes: transmitting a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain, wherein generating feedback associated with self-interference at the UE includes: generating feedback including an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain.

[0237] Aspect 28: The method of aspects 22 to 27 further includes: receiving a configuration for full-duplex communication between the UE and the base station based at least in part on a report that has transmitted feedback having self-interference associated with the UE.

[0238] Aspect 29: The method of aspects 22 to 28 further includes: receiving RRC signaling, the RRC signaling instructing the UE to include feedback associated with self-interference at the UE in a report when the UE is operating in full-duplex mode.

[0239] Aspect 30: A method for wireless communication at a base station, comprising: transmitting downlink transmissions to a UE; receiving a report from the UE including feedback related to self-interference at the UE based on the UE operating in full-duplex mode; and transmitting a configuration for full-duplex communication between the UE and the base station to the UE based at least in part on the report including the feedback related to self-interference.

[0240] Aspect 31: The method of aspect 30, wherein the report indicates that the UE failed to successfully decode the downlink transmission.

[0241] Aspect 32: The method of aspects 30 and 31, wherein the feedback associated with self-interference at the UE includes: a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength of the downlink transmission, or both, and wherein transmitting configuration for full-duplex communication to the UE includes: transmitting configuration for full-duplex communication to the UE based at least in part on a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength, or both.

[0242] Aspect 33: The method of aspects 30 to 32, wherein the feedback associated with self-interference at the UE includes: an uplink power configuration at the UE used to transmit uplink transmissions that cause self-interference to downlink transmissions, an indication that the UE has failed to successfully decode downlink transmissions at least in part based on self-interference, or both, and wherein transmitting configuration for full-duplex communication to the UE includes: transmitting configuration for full-duplex communication to the UE at least in part based on uplink power configuration, an indication that the UE has failed to successfully decode downlink transmissions at least in part based on self-interference, or both.

[0243] Aspect 34: The method of aspects 30 to 33, wherein the feedback associated with self-interference at the UE includes: a recommended beam pair for full-duplex communication, a recommended uplink power configuration for full-duplex communication, or both, and wherein transmitting the configuration for full-duplex communication to the UE includes: transmitting the configuration for full-duplex communication to the UE at least in part based on the recommended beam pair for full-duplex communication, the recommended uplink power configuration for full-duplex communication, or both.

[0244] Aspect 35: The method of aspects 30 to 34, wherein the feedback associated with self-interference at the UE includes: an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain, and wherein transmitting the configuration for full-duplex communication to the UE includes: transmitting the configuration for full-duplex communication to the UE at least in part based on the indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain.

[0245] Aspect 36: The method of aspects 30 to 35 further includes: transmitting RRC signaling, the RRC signaling instructing the UE to include feedback associated with self-interference at the UE in a report when the UE is operating in full-duplex mode.

[0246] Aspect 37: An apparatus for wireless communication, comprising at least one means for performing the method as described in any one of aspects 22 to 29.

[0247] Aspect 38: An apparatus for wireless communication, comprising a processor and a memory coupled to the processor, the processor and the memory being configured to perform the method of any one of aspects 22 to 29.

[0248] Aspect 39: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in any of Aspects 22 to 29.

[0249] Aspect 40: An apparatus for wireless communication, comprising at least one means for performing the method as described in any one of aspects 30 to 36.

[0250] Aspect 41: An apparatus for wireless communication, comprising a processor and a memory coupled to the processor, the processor and the memory being configured to perform the method of any one of aspects 30 to 36.

[0251] Aspect 42: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in any of Aspects 30 to 36.

[0252] Aspect 43: A method for wireless communication at a UE operating in full-duplex mode, comprising: identifying that the UE has failed to successfully decode a downlink transmission from a base station; generating feedback associated with self-interference at the UE, based at least in part on the identification and on the UE operating in full-duplex mode; generating a report indicating that the UE has failed to successfully decode the downlink transmission, the report including feedback associated with self-interference at the UE, based at least in part on the UE operating in full-duplex mode; and transmitting the report having feedback associated with self-interference at the UE to a base station.

[0253] Aspect 44: The method of aspect 43, wherein generating feedback associated with self-interference at the UE includes generating feedback including a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength transmitted in the downlink, or both.

[0254] Aspect 45: The method of aspect 43 further includes: determining that the UE failed to successfully decode the downlink transmission at least in part based on self-interference caused by uplink transmissions from the UE, wherein generating feedback associated with the self-interference at the UE includes: generating feedback including uplink power configuration at the UE used for transmitting uplink transmissions, an indication that the UE failed to successfully decode the downlink transmission at least in part based on self-interference, or both.

[0255] Aspect 46: The method of aspects 43 to 45, wherein generating feedback associated with self-interference at the UE includes generating feedback including a recommended beam pair for full-duplex communication with the base station, a recommended uplink power configuration for full-duplex communication with the base station, or both.

[0256] Aspect 47: The method of aspects 43 to 46 further includes: transmitting a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain, wherein generating feedback associated with self-interference at the UE includes: generating feedback including an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain.

[0257] Aspect 48: The method of aspects 43 to 47 further includes: receiving, at least in part, a configuration for full-duplex communication between the UE and the base station based on a report transmitted to the base station having feedback associated with self-interference at the UE.

[0258] Aspect 49: The method of aspects 43 to 48, wherein transmitting a report with feedback associated with self-interference at the UE to the base station includes transmitting the report with feedback associated with self-interference at the UE to the base station in a control channel, a data channel, or both.

[0259] Aspect 50: The method of aspects 43 to 49, wherein transmitting a report in a control channel, a data channel, or both includes: a first phase of transmitting a report to a base station in the control channel; a second phase of receiving permission, which grants the UE resources in the data channel to transmit the report; and a second phase of transmitting the report in the data channel at least in part based on receiving the permission, wherein the second phase of the report includes feedback associated with self-interference at the UE.

[0260] Aspect 51: The method of aspects 43 to 50 further includes: receiving RRC signaling, the RRC signaling instructing the UE to include feedback associated with self-interference at the UE in a report when the UE is operating in full-duplex mode.

[0261] Aspect 52: A method for wireless communication at a base station, comprising: transmitting a downlink transmission to a UE; receiving from the UE a report indicating that the UE failed to successfully decode the downlink transmission, wherein the report includes feedback at least in part based on self-interference associated with the UE operating in full-duplex mode; and transmitting to the UE a configuration for full-duplex communication between the UE and the base station based at least in part on the received report having feedback associated with self-interference.

[0262] Aspect 53: The method of aspect 52, wherein the feedback associated with self-interference at the UE includes: a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength of the downlink transmission, or both, and wherein transmitting configuration for full-duplex communication to the UE includes: transmitting configuration for full-duplex communication to the UE at least in part based on a measurement of self-interference at the UE, a ratio of self-interference at the UE to the downlink signal strength, or both.

[0263] Aspect 54: The method of aspects 52 to 53, wherein the feedback associated with self-interference at the UE includes: an uplink power configuration at the UE used to transmit uplink transmissions that cause self-interference to downlink transmissions, an indication that the UE has failed to successfully decode downlink transmissions at least in part based on self-interference, or both, and wherein transmitting configuration for full-duplex communication to the UE includes: transmitting configuration for full-duplex communication to the UE at least in part based on the uplink power configuration, an indication that the UE has failed to successfully decode downlink transmissions at least in part based on self-interference, or both.

[0264] Aspect 55: The method of aspects 52 to 54, wherein the feedback associated with self-interference at the UE includes: a recommended beam pair for full-duplex communication, a recommended uplink power configuration for full-duplex communication, or both, and wherein transmitting the configuration for full-duplex communication to the UE includes: transmitting the configuration for full-duplex communication to the UE at least in part based on the recommended beam pair for full-duplex communication, the recommended uplink power configuration for full-duplex communication, or both.

[0265] Aspect 56: The method of aspects 52 to 55, wherein the feedback associated with self-interference at the UE includes: an indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain, and wherein transmitting the configuration for full-duplex communication to the UE includes: transmitting the configuration for full-duplex communication to the UE at least in part based on the indication that the UE has transmitted a semi-persistent scheduled uplink transmission that overlaps with the downlink transmission in the time domain.

[0266] Aspect 57: The method of aspects 52 to 56, wherein receiving a report having feedback associated with self-interference at the UE includes receiving a report having feedback associated with self-interference at the UE in a control channel, a data channel, or both.

[0267] Aspect 58: The method of aspects 52 to 57, wherein receiving a report in a control channel, a data channel, or both includes: a first phase of receiving a report from a UE in a control channel; a second phase of transmitting an authorization that allocates resources in a data channel for the UE to transmit the report; and a second phase of receiving the report in a data channel at least in part based on the transmission of the authorization, wherein the second phase of the report includes feedback associated with self-interference at the UE.

[0268] Aspect 59: The method of aspects 52 to 58 further includes: transmitting RRC signaling, the RRC signaling instructing the UE to include feedback associated with self-interference at the UE in a report when the UE is operating in full-duplex mode.

[0269] Aspect 60: A device for wireless communication, comprising at least one means for performing the method as described in any one of aspects 43 to 51.

[0270] Aspect 61: An apparatus for wireless communication, comprising a processor and a memory coupled to the processor, the processor and the memory being configured to perform the method of any one of aspects 43 to 51.

[0271] Aspect 62: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in any of Aspects 43 to 51.

[0272] Aspect 63: An apparatus for wireless communication, comprising at least one means for performing the method of any one of aspects 52 to 59.

[0273] Aspect 64: An apparatus for wireless communication, comprising a processor and a memory coupled to the processor, the processor and the memory being configured to perform the method of any one of aspects 52 to 59.

[0274] Aspect 65: A non-transient computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods as described in any of Aspects 52 to 59.

[0275] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein can also be applied to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described can be applied to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0276] The information and signals described herein can be represented using any of a wide variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout this description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0277] The various illustrative boxes and components described herein can be implemented or executed using a general-purpose processor, DSP, ASIC, CPU, 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. The general-purpose processor may be a microprocessor, but in alternatives, the processor may be any processor, controller, microcontroller, or state machine. The 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 working in conjunction with a DSP core, or any other such configuration).

[0278] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations fall within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed such that different parts of the function are implemented at different physical locations.

[0279] Computer-readable media includes both non-transitory computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media can be any available medium accessible to 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 disc (CD) ROM or other optical disc 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 in the form of instructions or data structures and is accessible to a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Similarly, any connection is also legitimately referred to as computer-readable media. For example, if 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, then such coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable media. As used in this article, disk and disc include CDs, laser discs, optical discs, DVDs, floppy disks, and Blu-ray discs, where disks often magnetically reproduce data while discs optically reproduce data using lasers. Combinations of these media are also included within the scope of computer-readable media.

[0280] As used herein (including in the claims), the word "or" in an enumeration of items (e.g., an enumeration of items accompanied by phrases such as "at least one" or "one or more") indicates an inclusive enumeration, such that an enumeration of at least one of, for example, 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). Similarly, as used herein, the phrase "based on" should not be interpreted as referring to a closed set of conditions. For example, an example step described as "based on condition A" may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0281] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, components of the same type may be distinguished by a dash following the reference numeral and a second reference numeral used to differentiate between similar components. If only the first reference numeral is used in the description, the description may apply to any of the similar components having the same first reference numeral, regardless of the second reference numeral or other subsequent reference numerals.

[0282] The descriptions herein, illustrated with reference to the accompanying drawings, depict exemplary configurations and are not representative of all examples that may be implemented or fall within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration" and does not imply "superior" or "outperforming" other examples. This detailed description includes specific details to provide 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.

[0283] The description provided herein is intended to enable those skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the universal principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for wireless communication, comprising: One or more memory units; as well as One or more processors coupled to the one or more memories, the one or more processors being configured such that the device: The feedback associated with self-interference at the device is generated at least in part based on the device's failure to successfully decode downlink transmissions when in full-duplex mode. A report is generated, which includes, at least in part, the feedback associated with the self-interference at the device based on the full-duplex mode; as well as The report is transmitted with the feedback associated with the self-interference at the device.

2. The apparatus of claim 1, wherein, The report indicated that the device failed to successfully decode the downlink transmission.

3. The apparatus of claim 1, wherein, In order to generate the feedback associated with the self-interference at the device, the one or more processors are further configured such that the device: The generation includes a measurement of the self-interference at the device, a ratio of the self-interference at the device to the downlink signal strength transmitted in the downlink, or feedback of both.

4. The apparatus of claim 1, wherein, The one or more processors are further configured to cause the device to: The device is determined to have failed to decode the downlink transmission at least in part due to self-interference caused by uplink transmissions from the device, wherein, in order to generate the feedback associated with the self-interference at the device, the one or more processors are further configured such that the device: Generate feedback including an uplink power configuration at the device used to transmit the uplink transmission, an indication that the device failed to successfully decode the downlink transmission at least in part due to the self-interference, or both.

5. The apparatus of claim 1, wherein, In order to generate the feedback associated with the self-interference at the device, the one or more processors are further configured such that the device: The generation includes feedback on recommended beam pairs for full-duplex communication with the base station, recommended uplink power configurations for the full-duplex communication with the base station, or both.

6. An apparatus for wireless communication, comprising: One or more memory units; as well as One or more processors coupled to the one or more memories, the one or more processors being configured such that the device: Transmit downlink transmissions to user equipment (UE); The report is received from the UE, the report including feedback at least in part based on self-interference associated with the UE when the UE is operating in full-duplex mode; as well as The configuration for full-duplex communication between the UE and the device is transmitted to the UE based at least in part on the report, which includes the feedback associated with the self-interference at the UE.

7. The apparatus of claim 6, wherein, The report indicates that the UE failed to successfully decode the downlink transmission.

8. The apparatus of claim 6, wherein, The feedback associated with the self-interference at the UE includes: a measurement of the self-interference at the UE, a ratio of the self-interference at the UE to the downlink signal strength transmitted in the downlink, or both, and wherein, in order to transmit the configuration for the full-duplex communication to the UE, the one or more processors are further configured such that the device: The configuration for the full-duplex communication is transmitted to the UE based at least in part on the measurement of the self-interference at the UE, the ratio of the self-interference at the UE to the downlink signal strength, or both.

9. The apparatus of claim 6, wherein, The feedback associated with the self-interference at the UE includes: an uplink power configuration at the UE used to transmit uplink transmissions that cause the self-interference to the downlink transmissions, an indication that the UE has failed to successfully decode the downlink transmissions at least in part based on the self-interference, or both, and wherein, in order to transmit the configuration for the full-duplex communication to the UE, the one or more processors are further configured such that the device: The configuration for the full-duplex communication is transmitted to the UE at least in part based on the uplink power configuration, the indication that the UE has failed to decode the downlink transmission at least in part based on the self-interference, or both.

10. The apparatus of claim 6, wherein, The feedback associated with the self-interference at the UE includes: a recommended beam pair for the full-duplex communication, a recommended uplink power configuration for the full-duplex communication, or both, and wherein, in order to transmit the configuration for the full-duplex communication to the UE, the one or more processors are further configured such that the device: The configuration for full-duplex communication is transmitted to the UE at least in part based on the recommended beam pair for full-duplex communication, the recommended uplink power configuration for full-duplex communication, or both.

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