Techniques for self-interference measurement based on random access channel

Abstract

Methods, systems, and devices for wireless communication are described. A communication device can transmit a random access channel (RACH) signal using a transmit beam of a set of transmit beams. The RACH signal can include a RACH preamble. The communication device can receive a receive beam of a set of receive beams based on the transmitted RACH signal. The communication device can determine a self-interference level of the received beam. For example, the communication device can measure the self-interference level of the received beam based on the transmitted RACH signal including the RACH preamble. The communication device can operate in a mode based on the determined self-interference level.

Description

[0001] Cross-referencing

[0002] This patent application claims the rights of the following applications: U.S. Provisional Patent Application No. 63 / 039,807, filed June 16, 2020, entitled “TECHNIQUES FOR RANDOM ACCESS CHANNEL-BASED SELF-INTERFERENCE MEASUREMENT”, by Abedini et al.; and U.S. Patent Application No. 17 / 324,668, filed May 19, 2021, entitled “TECHNIQUES FOR RANDOM ACCESS CHANNEL-BASED SELF-INTERFERENCE MEASUREMENT”; each of the above applications is assigned to the assignee of this application. Technical Field

[0003] This disclosure relates, for example, to wireless communications, and more specifically, to techniques for self-interference measurements based on random access channels (RACH). Background Technology

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcasting. 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 (e.g., Long Term Evolution (LTE) systems, improved LTE (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 technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal OFDM (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM).

[0005] Wireless multiple access communication systems may include one or more base stations or one or more network access nodes, each supporting communication with multiple communication devices (which may also be referred to as user equipment (UE)) simultaneously. Some wireless communication systems (such as 4G and 5G systems) can support duplex communication, such as half-duplex and full-duplex communication. In some cases, these wireless communication systems may experience interference problems due to half-duplex and full-duplex communication, which may affect the reliability of the wireless communication system. With increasing demands for communication efficiency, it may be expected that wireless communication systems (such as 4G and 5G systems) will provide improvements in duplex communication to support higher reliability and lower latency duplex operation, and other examples. Summary of the Invention

[0006] Various aspects of this disclosure relate to improved methods, systems, apparatuses, and devices for supporting techniques for self-interference measurement based on a random access channel (RACH). This disclosure provides techniques for configuring a communication device to provide self-interference measurement based on RACH. The communication device can transmit a RACH signal using a transmit beam from a set of transmit beams. The RACH signal may include, for example, a RACH preamble. The communication device can determine (e.g., measure) the self-interference level based on the transmitted RACH signal. For example, the communication device can receive a receive beam from a set of receive beams based on the transmitted RACH signal. The communication device can determine the self-interference level of the received beam. Therefore, this disclosure can include features for improving full-duplex communication and, in some examples, can facilitate enhanced efficiency of high-reliability and low-latency full-duplex operation in 5G systems, among other benefits.

[0007] A method for wireless communication at a device is described. The method may include: transmitting a RACH signal using a transmit beam from a transmit beam set; receiving a receive beam from a receive beam set based on the transmitted RACH signal; determining a self-interference level of the received beam; and operating in a mode based on the determined self-interference level.

[0008] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: transmit a RACH signal using a transmit beam from a transmit beam set; receive a receive beam from a receive beam set based on the transmitted RACH signal; determine a self-interference level of the received beam; and operate in a mode based on the determined self-interference level.

[0009] Another apparatus for wireless communication is described. The apparatus may include units for performing the following operations: transmitting a RACH signal using a transmit beam from a transmit beam set; receiving a receive beam from a receive beam set based on the transmitted RACH signal; determining the self-interference level of the received beam; and operating in a mode based on the determined self-interference level.

[0010] A non-transitory computer-readable medium is described, storing code for wireless communication at a device. The code may include instructions executable by a processor to: transmit a RACH signal using a transmit beam from a transmit beam set; receive a receive beam from a receive beam set based on the transmitted RACH signal; determine a self-interference level of the received beam; and operate in a mode based on the determined self-interference level.

[0011] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining a RACH configuration, wherein determining the self-interference level includes: determining the self-interference level of the received beam based on the RACH configuration.

[0012] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving a message from a network device including the RACH configuration, wherein determining the self-interference level includes: determining the self-interference level of the received beam based on the message received from the network device.

[0013] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining the transmit power level of the RACH signal based on the RACH configuration, wherein transmitting the RACH signal comprises: transmitting the RACH signal using the transmit beams in the set of transmit beams based on the determined transmit power level of the RACH signal.

[0014] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining a timing advance associated with the RACH signal based on one or more timing advances associated with one or more uplink transmissions, wherein transmitting the RACH signal comprises: transmitting the RACH signal using the transmit beams in the transmit beam set based on the timing advance, wherein the timing advance associated with the RACH signal and the one or more timing advances associated with the one or more uplink transmissions may be the same.

[0015] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving a message including an indication of timing advance associated with the RACH signal, wherein transmitting the RACH signal comprises: transmitting the RACH signal using the transmit beams in the transmit beam set based on the timing advance indicated in the received message, wherein the timing advance associated with the RACH signal may be different from one or more timing advances associated with the one or more uplink transmissions.

[0016] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: selecting a preamble format associated with the RACH signal based on a timing offset, wherein transmitting the RACH signal comprises: transmitting the RACH signal using the transmit beams in the transmit beam set based on the selected preamble format, wherein the preamble format includes a short preamble format or a long preamble format.

[0017] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving a message including an indication of a set of preamble identifiers or a set of preamble resources, or both, wherein the set of preamble resources is associated with one or more reference signals, the one or more reference signals including one or more of a synchronization signal block (SSB), an uplink reference signal, or a downlink reference signal; selecting a preamble identifier from the set of preamble identifiers or a preamble resource from the set of preamble resources, or both, based on the received message, wherein transmitting the RACH signal includes: transmitting the RACH signal using the transmit beam from the set of transmit beams based on the selected preamble identifier or the selected preamble resource, or both, wherein the RACH signal includes a RACH preamble associated with the selected preamble identifier.

[0018] In some examples of the methods, apparatuses and non-transitory computer-readable media described herein, selecting a preamble identifier from the set of preamble identifiers or a preamble resource from the set of preamble resources, or both, may include an operation, feature, unit or instruction for randomly selecting a preamble identifier from the set of preamble identifiers or a preamble resource from the set of preamble resources, or both.

[0019] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, selecting a preamble identifier from the set of preamble identifiers or a preamble resource from the set of preamble resources, or both, may include operations, features, units, or instructions for selecting a preamble identifier from the set of preamble identifiers or a preamble resource from the set of preamble resources, or both, based on a standard.

[0020] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: selecting a subset of preamble resources from the preamble resource set; ramping up the transmit power level of the RACH signal over one or more RACH periods based on the selected subset of preamble resources from the preamble resource set, wherein transmitting the RACH signal comprises: using the transmit beams from the transmit beam set to transmit the RACH signal based on ramping up the transmit power level of the RACH signal over the one or more RACH periods.

[0021] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: selecting the transmit beam and the receive beam based on determining a quasi-colocation relationship between the transmit beam and the receive beam, wherein transmitting the RACH signal includes: using the transmit beams in the set of transmit beams to transmit the RACH signal based on the determined quasi-colocation relationship, wherein determining the self-interference level includes: determining the self-interference level of the received beam based on the determined quasi-colocation relationship.

[0022] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving a reference signal using the receive beams in the set of receive beams; determining a transmit power level of the RACH signal based on the received reference signal, wherein transmitting the RACH signal comprises: transmitting the RACH signal using the transmit beams in the set of transmit beams based on the determined transmit power level of the RACH signal.

[0023] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing: receiving a set of reference signals using the set of receive beams; determining, based on the received set of reference signals, a transmit power level for each RACH signal in the set of RACH signals for each receive beam in the set of receive beams, wherein transmitting the RACH signals comprises: transmitting the set of RACH signals using the set of transmit beams based on the determined transmit power level for each RACH signal in the set of RACH signals.

[0024] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, determining the self-interference level may include operations, features, units, or instructions for performing the following: determining the self-interference level of a received beam based on a set of transmitted RACH signals using the received beam set, wherein operating in the mode includes: operating in the mode based on the determined self-interference level, the determined self-interference level being based on the set of transmitted RACH signals using the received beam set.

[0025] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving a message including an indication of a set of preamble resources, the set of preamble resources including a common set of preamble resources for determining the self-interference level at the device and at least one other device, wherein determining the set of self-interference levels includes: determining the self-interference level of the received beam based on the common set of preamble resources.

[0026] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing: determining an additional RACH configuration; and performing at least one RACH operation different from determining the self-interference level based on the additional RACH configuration, wherein the at least one RACH operation includes an initial access operation, a system information request operation, or a beam management operation.

[0027] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: receiving a System Information Block (SIB) message including a RACH configuration from a network device, wherein determining the self-interference level includes: determining the self-interference level of the received beam based on the received SIB message including the RACH configuration.

[0028] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining a set of RACH timings or a set of RACH time periods, or both, based on a RACH configuration, wherein determining the self-interference level includes: determining the self-interference level of the received beam based on the set of RACH timings or the set of RACH time periods, or both.

[0029] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: allocating a set of preamble identifiers or a set of preamble resources, or both; and sending a message including an indication to the set of preamble identifiers or the set of preamble resources, or both.

[0030] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: transmitting a report including an indication of a determined self-interference level of a received beam, wherein operating in the mode comprises: operating in the mode based on the transmitted report including the indication of a determined self-interference level of the received beam.

[0031] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, transmitting the report may include operations, features, units, or instructions for transmitting the report in a RACH payload associated with the RACH signal.

[0032] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the wireless communication includes full-duplex communication.

[0033] A method for wireless communication at a network device is described. The method may include: determining a RACH configuration for the device to transmit RACH signals using transmit beams from a set of transmit beams; determining the self-interference level of receive beams from a set of receive beams associated with the device; and transmitting a message including the RACH configuration.

[0034] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: determine a RACH configuration for the device to transmit RACH signals using transmit beams in a transmit beam set; determine the self-interference level of receive beams in a receive beam set associated with the device; and transmit a message including the RACH configuration.

[0035] Another apparatus for wireless communication is described. The apparatus may include units for performing the following operations: determining a RACH configuration for the device to transmit RACH signals using transmit beams from a set of transmit beams, and determining the self-interference level of receive beams from a set of receive beams associated with the device; and transmitting a message including the RACH configuration.

[0036] A non-transitory computer-readable medium is described, storing code for wireless communication at a network device. The code may include instructions executable by a processor to: determine a RACH configuration for the device to transmit RACH signals using transmit beams from a set of transmit beams, and determine the self-interference level of receive beams from a set of receive beams associated with the device; and transmit a message including the RACH configuration.

[0037] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing: receiving a report including an indication of a determined self-interference level of the received beams in the set of received beams associated with the device; and operating in a mode based on the received report, the received report including the indication of the determined self-interference level of the received beams in the set of received beams associated with the device.

[0038] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, receiving the report may include operations, features, units, or instructions for receiving the report in a RACH payload associated with the RACH signal.

[0039] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for: receiving the RACH signal from the device using a receive beam from a set of receive beams; and operating in a mode based on the RACH signal received from the device.

[0040] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: determining a timing advance associated with the RACH configuration based on one or more timing advances associated with one or more uplink transmissions, wherein receiving the RACH signal includes: using the receive beam from the transmit beam set to receive the RACH signal based on the timing advance.

[0041] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, units, or instructions for performing the following: allocating a set of preamble identifiers or a set of preamble resources, or both, wherein sending the message includes: sending the message including an indication to the set of preamble identifiers or the set of preamble resources, or both. Attached Figure Description

[0042] Figure 1 and 2 Examples of wireless communication systems supporting techniques for self-interference measurement based on random access channel (RACH) are shown, according to various aspects of this disclosure.

[0043] Figure 3A and 3B An example of a wireless communication system supporting techniques for RACH-based self-interference measurement is shown, according to various aspects of this disclosure.

[0044] Figure 4 An example of a process flow supporting techniques for RACH-based self-interference measurements is shown, according to various aspects of this disclosure.

[0045] Figure 5 and 6 A block diagram of an apparatus supporting techniques for RACH-based self-interference measurements is shown, according to various aspects of this disclosure.

[0046] Figure 7 A block diagram of a communication manager supporting techniques for RACH-based self-interference measurements is shown, according to various aspects of this disclosure.

[0047] Figure 8 A diagram of a system including a device supporting a technique for RACH-based self-interference measurement is shown, according to various aspects of this disclosure.

[0048] Figure 9 and 10 A block diagram of an apparatus supporting techniques for RACH-based self-interference measurements is shown, according to various aspects of this disclosure.

[0049] Figure 11 A block diagram of a communication manager supporting techniques for RACH-based self-interference measurements is shown, according to various aspects of this disclosure.

[0050] Figure 12 A diagram of a system including a device supporting a technique for RACH-based self-interference measurement is shown, according to various aspects of this disclosure.

[0051] Figures 13 to 17A flowchart illustrating a method for supporting techniques for RACH-based self-interference measurements according to various aspects of this disclosure is shown. Detailed Implementation

[0052] Some wireless communication systems may include communication equipment that supports multiple radio access technologies, such as user equipment (UE) and base stations, such as eNodeB (eNB), next-generation NodeB, or gigabit NodeB (any of which may be referred to as gNB). Examples of radio access technologies include 4G systems (such as Long Term Evolution (LTE) systems) and fifth-generation (5G) systems (which may be referred to as New Radio (NR) systems). Communication equipment may support full-duplex communication in 4G and 5G systems, such as half-duplex and full-duplex communication. In some cases, communication equipment may experience interference issues due to half-duplex and full-duplex communication, which may affect the reliability and latency of full-duplex communication. As the demand for communication efficiency increases, it may be expected that communication equipment will provide improvements in full-duplex communication to support higher reliability and lower latency full-duplex operation, and other examples.

[0053] Communication devices may experience a certain level of self-interference due to signal leakage between the transmitting and receiving antennas. For example, communication devices using full-duplex communication (e.g., simultaneously transmitting on an uplink channel and receiving wireless communication on a downlink channel) may experience a certain level of self-interference on the receiving antenna due to the uplink wireless communication of the communication device. Therefore, it may be desirable to reduce or eliminate the effects of self-interference at the communication device. In some cases, the communication device can use a reference signal (e.g., an uplink reference signal, a downlink reference signal) to measure self-interference. However, self-interference measurement using a reference signal may involve timing advance of the reference signal transmission, which can be inefficient and increase the delay of the self-interference measurement.

[0054] Various aspects of this disclosure relate to configuring a communication device to reduce or eliminate self-interference experienced at the communication device by measuring self-interference levels using one or more Random Access Channel (RACH) signals. In some examples, the communication device may be configured to use a RACH preamble or a RACH payload, or both, to measure the self-interference level. The example techniques described herein for utilizing RACH signals can provide advantages over techniques using other signals (e.g., downlink reference signals, uplink reference signals) to measure self-interference at the communication device. In some examples, utilizing RACH signals can accommodate large time misalignments. For example, the RACH preamble may have a guard period (GP) to prevent resource leakage, which can improve the reliability of self-interference measurements. In some examples, the communication device may transmit RACH signals without timing advance, thereby reducing the delay in self-interference measurements.

[0055] As described herein, communication devices can support techniques for RACH-based self-interference measurement that, when operating in full-duplex mode, account for self-interference between uplink and downlink communication. The communication device can transmit RACH signals using transmit beams from a transmit beamset. The RACH signals may include, for example, a RACH preamble. The communication device can determine (e.g., measure) the self-interference level based on the transmitted RACH signals. For example, the communication device can receive receive beams from a receive beamset based on the transmitted RACH signals. The communication device can determine the self-interference level of the received beams.

[0056] Various aspects of the subject matter described in this disclosure can be implemented to achieve one or more of the following potential improvements. The techniques employed by the communication device can provide benefits and enhancements to the operation of the communication device. For example, the operations performed by the communication device can provide improvements to full-duplex communication. In some examples, configuring the communication device to support techniques for RACH-based self-interference measurements can support improvements in power consumption, spectral efficiency, and in some examples, can promote enhanced efficiency and reduced latency in full-duplex communication operation, as well as other benefits.

[0057] Various aspects of this disclosure are first described in the context of a wireless communication system. These aspects are further illustrated by apparatus diagrams, system diagrams, and flowcharts relating to techniques for RACH-based self-interference measurement, and are described with reference to these diagrams.

[0058] Figure 1 Examples of a wireless communication system 100 supporting techniques for RACH-based self-interference measurement according to various aspects of this disclosure are shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an improved LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (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, or communication with low-cost and low-complexity devices, or any combination thereof.

[0059] Base stations 105 can be distributed throughout a geographical area to form a wireless communication system 100, and can be devices of different forms or with different capabilities. Base stations 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 where base station 105 and UE 115 can support signal transmission according to one or more radio access technologies.

[0060] UE 115 can be distributed throughout the entire coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary, mobile, or both at different times. UE 115 can be devices of different forms or with different capabilities. Figure 1 Some example UE 115s are shown in the document. The UE 115 described herein is capable of communicating with various types of devices, such as other UE 115s, base station 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), such as... Figure 1 As shown.

[0061] Base station 105 can communicate with core network 130, communicate with each other, or perform both of these operations. For example, base station 105 can interface with core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base station 105 can communicate with each other directly (e.g., directly between base stations 105) on backhaul links 120 (e.g., via X2, Xn, or other interfaces), or indirectly (e.g., via core network 130), or perform both of these operations. In some examples, backhaul link 120 can be or includes one or more radio links. One or more of the base stations 105 described herein can include or can be referred to by those skilled in the art as base transceiver, radio base station, access point, radio transceiver, Node B, evolved Node B (eNB), next-generation Node B, or gigabit Node B (any of which can be referred to as gNB), home node B, home evolved Node B, or some other suitable term.

[0062] 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, and other examples. 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, and other examples, which may be implemented in various items such as electrical appliances, or vehicles, meters, and other examples. The UE 115 described herein is capable of communicating with various types of devices, such as other UE 115s that may sometimes act as repeaters, as well as base station 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, and other examples, such as... Figure 1 As shown.

[0063] 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 band 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 a radio frequency spectrum band (e.g., a bandwidth portion (BWP)) that operates 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 operation for the carrier, user data, or other signaling. Wireless communication system 100 can support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used in conjunction with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers.

[0064] In some examples (e.g., in a carrier aggregation configuration), carriers may also have acquisition or control signaling that coordinates operation against other carriers. Carriers may be associated with frequency channels (e.g., Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be positioned according to a channel grid for discovery by UE 115. Carriers may operate in standalone mode, where UE 115 performs initial acquisition and connection via a carrier, or in non-standalone mode, where different carriers (e.g., the same or different radio access technologies) are used to anchor the connection.

[0065] The communication link 125 shown in the wireless communication system 100 may include uplink transmission from UE 115 to base station 105, or downlink transmission from base station 105 to UE 115. A carrier may carry either 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). A carrier may be associated with the bandwidth of a radio frequency spectrum band, 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 a number of defined bandwidths for a radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz). Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have hardware configurations supporting communication over a carrier bandwidth, or may be configurable to support communication over a carrier bandwidth within a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., subband, BWP) or all of the carrier bandwidth.

[0066] The signal waveform transmitted on a carrier can consist of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as Orthogonal Frequency Division Multiplexing (OFDM) or Discrete Fourier Transform Spread Spectrum OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element can 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 can depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Therefore, the more resource elements UE 115 receives and the higher the order of the modulation scheme, the higher the data rate can be for UE 115. Wireless communication resources can refer to a combination of radio frequency spectrum band resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers can further increase the data rate or data integrity used for communication with UE 115.

[0067] One or more digital schemes (numerologies) can be supported for a carrier, where the digital scheme may include subcarrier spacing (Δf) and a cyclic prefix. A carrier can be divided into one or more BWPs with the same or different digital schemes. 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 restricted to one or more active BWPs. The basic time unit (which may be, for example, T) can be used. s =1 / (Δf) max ·N f The sampling period is ) seconds, where Δf max This can represent the maximum supported subcarrier spacing, and N f The time interval for base station 105 or UE 115 can be represented as a multiple of the maximum supported Discrete Fourier Transform (DFT) size. The time interval for communication resources can be organized based on radio frames, each having 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).

[0068] 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 be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of 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 a number of symbol periods (e.g., this depends 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 micro-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 can depend on the subcarrier spacing or the operating radio frequency spectrum band. A subframe, time slot, micro-time slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst form of a shortened TTI (sTTI)).

[0069] Physical channels can be multiplexed on a carrier using various techniques. For example, one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels on a downlink carrier. 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., CORESETs) can be configured for a group of UEs 115. For example, one or more of the UEs 115 can monitor or search for control regions against control information based on one or more search space sets, and each search space set can include one or more control channel candidates arranged in a cascaded manner at one or more aggregation levels. The 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 for 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 used to send control information to a specific UE 115.

[0070] Each base station 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used (e.g., on a carrier) to communicate with base station 105 and may be associated with an identifier used to distinguish neighboring cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), or other identifier). 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. Depending on various factors (such as the capabilities of base station 105), the range of such cells can range from small areas (e.g., structures, subsets of structures) to large areas. For example, a cell may be or include buildings, subsets of buildings, or external space between or overlapping geographic coverage areas 110, and other examples.

[0071] Macro cells, for example, cover a relatively large geographical area (e.g., a radius of several kilometers) and can allow unrestricted access by UE 115 with a service subscription to a network provider supporting macro cells. In contrast, small cells can be associated with a lower-power base station 105 and can operate in the same or different (e.g., licensed, unlicensed) radio frequency spectrum bands as macro cells. Small cells can provide unrestricted access to UE 115 with a service subscription to a network provider, or restricted access to UE 115 associated with a small cell (e.g., UE 115 in a Closed Subscriber Group (CSG), UE 115 associated with a user in a residence or office). Base station 105 can support one or more cells and can also support communication on one or more cells using one or more component carriers. In some examples, carriers can support multiple cells and different cells can be configured based on different protocol types that can provide access for different types of devices (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)).

[0072] In some examples, base station 105 may be mobile, and therefore provide communication coverage for mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but 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 for various geographic coverage areas 110.

[0073] The wireless communication system 100 can support synchronous or asynchronous operation. For synchronous operation, base stations 105 can have similar frame timings, and transmissions from different base stations 105 can be approximately time-aligned. For asynchronous operation, base stations 105 can have different frame timings, and in some examples, transmissions from different base stations 105 may not be time-aligned. The techniques described herein can be used for both synchronous and asynchronous operation.

[0074] Some UE 115s (e.g., MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated machine-to-machine communication (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 can 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 humans interacting with the application. Some UE 115s can 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, wildlife monitoring, climate and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based billing.

[0075] Some UE 115s can be configured to operate in a power-saving mode, such as half-duplex communication (e.g., a mode that supports unidirectional communication via either transmission or reception, rather than simultaneous transmission and reception). In some examples, half-duplex communication may 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, when operating on limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UE 115s can be configured to operate using a narrowband protocol type associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs) within a carrier, within a carrier's guard band, or outside a carrier.

[0076] Wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE 115 can be designed to support ultra-reliable, low-latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private or group communication and can be supported by one or more mission-critical services (such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData)). Support for mission-critical functions can include service prioritization, and mission-critical services can 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.

[0077] In some examples, UE 115 is able to communicate directly with other UE 115 on a device-to-device (D2D) communication link 135 (e.g., using peer-to-peer (P2P) or D2D protocols). One or more UE 115s utilizing D2D communication can 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 otherwise unable to receive transmissions from base station 105. In some examples, groups of UE 115s communicating via D2D communication can 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 UE 115s without involving base station 105.

[0078] Core network 130 can provide 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), and can include at least one control plane entity (e.g., a mobility management entity (MME), access and mobility management function unit (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 unit (UPF)) routing packets to or interconnecting with external networks. The control plane entity can manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by base station 105 associated with core network 130. User IP packets can be transmitted through the user plane entity, which can provide IP address allocation and other functions. The user plane entity can connect to network operator IP service 150. Carrier IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0079] Some network devices (e.g., 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 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 individual network devices (e.g., radio headends and ANCs) or incorporated into a single network device (e.g., base station 105).

[0080] Wireless communication system 100 can operate using one or more radio frequency spectrum bands (e.g., in the range of 300 MHz to 300 GHz). For example, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength range extends from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, but the waves may be sufficient to penetrate structures for use in macrocells to provide service to UE 115 located indoors. Compared to the transmission of smaller frequencies and longer waves using the lower frequencies (HF) or very high frequencies (VHF) portions of the spectrum below 300 MHz, UHF wave transmission can be associated with smaller antennas and shorter distances (e.g., less than 100 km).

[0081] The wireless communication system 100 can also operate in the ultra-high frequency (SHF) region using a radio frequency spectrum band from 3 GHz to 30 GHz (also referred to as the centimeter band) or in the extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) (also referred to 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 device can be even smaller and more closely spaced compared to UHF antennas. In some examples, this can facilitate the use of antenna arrays within the device. However, EHF transmissions may suffer from even greater atmospheric attenuation and shorter distances compared to SHF or UHF transmissions. The techniques disclosed herein can be employed across transmissions using one or more different frequency regions, and the designated use of frequency bands across these frequency regions may vary depending on the country or regulatory authority.

[0082] Wireless communication system 100 can utilize both licensed and unlicensed radio frequency spectrum bands. For example, wireless communication system 100 can 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 frequency spectrum bands, devices (such as base station 105 and UE 115) can employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands can be based on carrier aggregation configurations that combine component carriers operating in licensed frequency bands (e.g., LAA). Operation in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and other examples.

[0083] Base station 105 or UE 115 may be equipped with multiple antennas, which can be used to employ techniques 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 (which may support MIMO operation or transmit or receive beamforming). For example, one or more base station antennas or antenna arrays may be co-located 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 having a number of 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, antenna panels may support radio frequency beamforming for signals transmitted via antenna ports.

[0084] Base station 105 or UE 115 can use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such a technique can be called spatial multiplexing. For example, a transmitting device can transmit multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device can receive multiple signals via different antennas or different combinations of antennas. Each of the multiple signals can be referred to as a separate spatial stream and can carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers can 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).

[0085] 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 form or guide antenna beams (e.g., transmit beams, receive beams) 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 the orientation of the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements can include applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with the transmitting or receiving device. The adjustments associated with each antenna element can be defined by a set of beamforming weights associated with the orientation (e.g., relative to the antenna array of the transmitting or receiving device, or relative to some other orientation).

[0086] As part of beamforming operations, base station 105 or UE 115 may use beam scanning techniques. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Base station 105 may transmit some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) multiple times in different directions. For example, base station 105 may transmit signals according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by a transmitting device (such as base station 105) or by a receiving device (such as UE 115)) to identify the beam direction for subsequent transmissions or receptions performed by base station 105.

[0087] Base station 105 may transmit signals (e.g., data signals associated with the receiving device) 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 signal received by UE 115 with the highest signal quality or otherwise acceptable signal quality.

[0088] In some examples, multiple beam directions can be used to perform transmissions by a device (e.g., base station 105 or UE 115), and the device can use a combination of digital precoding or radio frequency beamforming to generate combined beams for (e.g., from base station 105 to UE 115) transmissions. UE 115 can report feedback indicating precoding weights for one or more beam directions, and this feedback can correspond to a configured number of beams spanning the system bandwidth or one or more subbands. Base station 105 can 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 can provide feedback on beam selection, which can 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 employ similar techniques to transmit signals multiple times in different directions (e.g., to identify beam directions for subsequent transmissions or receptions by UE 115) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0089] When receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105, the receiving device (e.g., UE 115) can attempt multiple receiving configurations (e.g., directional listening). For example, the receiving device can attempt multiple receiving directions by receiving via different antenna subarrays, by processing the received signals according to different antenna subarrays, by receiving according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different sets of directional listening weights), or by processing the received signals according to different sets of receiving beamforming weights applied to signals received at multiple antenna elements of the antenna array (any of these operations can be referred to as "listening" according to different receiving configurations or receiving directions). In some examples, the receiving device can use a single receiving configuration to receive along a single beam direction (e.g., when receiving data signals). A single receiver configuration can be aligned to a beam direction determined based on listening in different receiver configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality based on listening in multiple beam directions).

[0090] 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 can perform packet fragmentation and reassembly for transmission over logical channels. The Media Access Control (MAC) layer can perform priority handling and multiplexing of logical channels to transport channels. The MAC layer can also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide the establishment, configuration, and maintenance of RRC connections (which support radio bearers for user plane data) between the UE 115 and the base station 105 or core network 130. At the physical layer, transport channels can be mapped to physical channels.

[0091] UE 115 and base station 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique used to increase the likelihood of correct data reception on communication link 125. HARQ can 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 throughput at the MAC layer under poor radio conditions (e.g., low signal and noise conditions). In some examples, the device can support same-slot HARQ feedback, where the device can provide HARQ feedback for data received in a previous symbol within a specific time slot. In other cases, the device can provide HARQ feedback in subsequent time slots or according to some other time interval.

[0092] Base station 105 may be configured with multiple antenna panels, one of which may be dedicated to downlink communication and another to simultaneous uplink communication (e.g., simultaneous communication on both uplink and downlink during a time period). Simultaneous downlink and uplink communication may cause self-interference at base station 105, UE 115, or both. In some cases, self-interference such as clutter interference (e.g., associated with signal echoes in wireless communication system 100) can reduce the reliability of mmW communication between UE 115 and base station 105 using full-duplex operation (e.g., full-duplex operation) and increase latency. In some cases of clutter interference, detecting and estimating clutter echoes may involve using increased transmission power (e.g., compared to near-field coupling). Clutter echoes may include large round-trip times, and in some cases, the direction of the clutter echo may differ from the active beam, candidate beam, or both.

[0093] In some cases, techniques for mitigating clutter interference in mmW communications may include high isolation (e.g., >85 dB) at the transmitter-receiver array of the equipment (e.g., UE 115, base station 105). In other cases, digital and analog cancellation techniques for self-interference measurements may be applied at UE 115 and base station 105. Therefore, improvements to full-duplex communications to mitigate clutter echoes from objects surrounding the equipment may be desirable, as some techniques can mitigate leakage between the antenna panels of the equipment (e.g., the antenna panel associated with the transmit beam and the antenna panel associated with the receive beam). In some examples, UE 115 and base station 105 may support null-forming processes for mitigating clutter interference. For example, UE 115 and base station 105 may adjust any combination of transmit and receive beams, which can form nulls in the direction of the clutter echo. Some exemplary techniques for measuring self-interference between uplink and downlink communications at a device (e.g., UE 115 or base station 105) operating in full-duplex mode may include measuring signals transmitted by the device (e.g., RACH signals transmitted by UE 115, such as RACH preamble or RACH payload, or both).

[0094] As described herein, UE 115 may support RACH-based self-interference measurement techniques for self-interference between uplink and downlink communications at UE 115 and base station 105, for example, when operating in full-duplex mode. UE 115 may transmit a RACH signal using a transmit beam from a transmit beam set. In one example, UE 115 may transmit a RACH signal. The RACH signal may include, for example, a RACH preamble. In some examples, UE 115 may determine (e.g., measure) the self-interference level at UE 115 based on the transmitted RACH signal. For example, UE 115 may receive a receive beam from a receive beam set based on the transmitted RACH signal. UE 115 may determine the self-interference level of the received beam. UE 115 may operate in a mode (e.g., half-duplex, full-duplex) based on the determined self-interference level. UE 115 may transmit a report including an indication of the self-interference level measured at UE 115. In some examples, UE 115 may determine (e.g., measure) the self-interference level of the received beam based on the RACH configuration. In one example, UE 115 may determine the RACH configuration based on a message from base station 105. This message may include an indication of the RACH configuration.

[0095] As described herein, base station 105 can support techniques for RACH-based self-interference measurement, taking into account self-interference between uplink and downlink communication between UE 115 operating in full-duplex mode and base station 105. Base station 105 can determine the RACH configuration for UE 115 to transmit RACH signals using UE 115's transmit beams, and determine the self-interference level of the received beams in the set of received beams associated with UE 115. In some examples, base station 105 can transmit a message including the RACH configuration. Base station 105 can receive a report including an indication of the determined self-interference level of the received beams in the set of received beams associated with UE 115. In some examples, base station 105 can operate in a mode based on the received report (e.g., half-duplex, full-duplex).

[0096] Figure 2 Examples of a wireless communication system 200 supporting techniques for RACH-based self-interference measurement according to various aspects of this disclosure are shown. In some examples, the wireless communication system 200 may implement various aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a base station 105 and a UE 115 as described herein. The wireless communication system 200 may support a variety of 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).

[0097] Base station 105 or UE 115 may be equipped 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 (which may support MIMO operation or transmit or receive beamforming). For example, the antennas or antenna arrays of base station 105 may be co-located 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 having a number of 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 one or more antenna ports. Therefore, base station 105 and UE 115 may be configured to support directional communication 205 (e.g., beamforming communication) using multiple antennas.

[0098] Base station 105 and UE 115 can communicate via directional communication 205 using multiple component carriers. For example, base station 105 and UE 115 can be configured to support multiple downlink component carriers and multiple uplink component carriers. Base station 105 and UE 115 can be configured to support directional communication 205 over a carrier bandwidth, or can be configured to support directional communication 205 over one of multiple carrier bandwidths. In some examples, base station 105 or UE 115 can support duplex communication 210 via carriers associated with multiple carrier bandwidths over directional communication 205, such as half-duplex communication or full-duplex communication, or both.

[0099] In some cases, base station 105 and UE 115 can support subband half-duplex communication or subband full-duplex communication. Base station 105 and UE 115 can support full-duplex communication using TDD or FDD technologies. In some cases, base station 105 and UE 115 can support TDD and FDD operations in unpaired or paired spectrum. Unpaired spectrum provides a single subband or a single frequency band for both downlink and uplink communication. Paired spectrum provides different subbands or frequency bands for downlink and uplink communication. For example, wireless communication system 200 may have a radio frequency spectrum block in a lower radio frequency spectrum band and an associated radio frequency spectrum block in a higher radio frequency spectrum band. This arrangement of radio frequency spectrum bands with one frequency band for uplink communication and one frequency band for downlink communication is called paired spectrum. In some cases, when base station 105 and UE 115 are configured with multiple antenna panels, one of which may be dedicated to downlink communication and another to uplink communication in unpaired or paired spectrum, base station 105 and UE 115 may experience self-interference. Self-interference can be a result of using multiple antenna panels simultaneously for uplink and downlink communication (e.g., in full-duplex communication).

[0100] UE 115 and base station 105 can support techniques for RACH-based self-interference measurement, which can take into account self-interference between uplink and downlink communications at UE 115 and base station 105 operating in full-duplex mode. In some examples, self-interference measurement at UE 115 may include the use of a RACH preamble. In some other examples, self-interference measurement at UE 115 may include the use of a RACH configuration. In some cases, UE 115 may send a RACH signal to base station 105 to achieve uplink synchronization with base station 105. In one example, UE 115 may transmit a RACH preamble to base station 105 to achieve uplink synchronization. UE 115 can select between different formats for the RACH preamble. For example, UE 115 can select between a long preamble format (e.g., format 0, format 1, format 2, or format 3) or a short preamble format (e.g., format A1, format A2, format A3, format B1, format B2, format B3, format B4, format C0, format C1) for the RACH preamble. In some examples, UE 115 can select the interval (e.g., gap length or GP) for the RACH preamble from the synchronization signal block (SSB) symbols. Therefore, UE 115 can select the RACH preamble to accommodate time misalignment (e.g., in the case of large time offsets, the GP of the RACH preamble can prevent leakage to the next symbol).

[0101] In some cases, where clutter echoes are present and cell and network-specific parameters (e.g., system information (SI)) include large round-trip times (e.g., significant time between retransmissions in a HARQ protocol), GP can prevent leakage (e.g., between transmit and receive beams). In some examples, UE 115 can transmit the RACH preamble without timing advance (e.g., the uplink transmission timing of the RACH preamble can be aligned with the downlink receive timing). Therefore, UE 115 can transmit self-interference measurement signals without timing advance. For example, the self-interference measurement signal can be aligned with the downlink reference timing. In some RACH configurations, wireless communication system 200 can support a power ramp for retransmissions of the RACH preamble (e.g., for clutter echo detection). In some examples, wireless communication system 200 (e.g., base station 105) can configure RACH timing to be associated with SSB. In one example, UE 115 can utilize this association in self-interference measurements.

[0102] To mitigate self-interference at UE 115, UE 115 (or any other UE of the wireless communication system 200) may use one or more transmit beams to transmit one or more RACH preambles. UE 115 may simultaneously use one or more receive beams to measure self-interference (e.g., based on the transmitted RACH preambles). Therefore, UE 115 may operate in a mode based on the measured self-interference (e.g., half-duplex, full-duplex). In some examples, UE 115 may determine the RACH configuration for self-interference measurement at UE 115. In some examples, UE 115 may autonomously determine at least a portion of the RACH configuration for self-interference measurement. In one example, the RACH configuration for self-interference measurement may be network-configured. For example, UE 115 may receive at least a portion of the RACH configuration for self-interference measurement from a network node (e.g., parent node, control node, control unit) of the wireless communication system 200. The network node may include, for example, base station 105 of the wireless communication system 200 or another UE.

[0103] UE 115 can determine the timing advance associated with the RACH signal. In some examples, UE 115 can determine the timing advance based on the timing advance associated with the uplink transmission at UE 115. In one example, UE 115 can transmit the RACH signal based on the determined timing advance. In some examples, UE 115 can transmit the RACH signal without applying a timing advance (e.g., the timing advance is equal to zero). In some examples, UE 115 can transmit the RACH signal with a timing advance equal to the timing advance associated with the uplink transmission at UE 115. In some other aspects, UE 115 can transmit the RACH with a timing advance different from the timing advance associated with the uplink transmission at UE 115.

[0104] UE 115 can perform clutter echo detection associated with the transmit or receive beam of UE 115, for example, based on self-interference measurements at UE 115. In some examples, UE 115 can operate in a clutter echo detection-based mode (e.g., half-duplex communication, full-duplex communication). In some examples, UE 115 can measure the self-interference of the transmit and receive beams of UE 115 in a configuration intended for (or currently being used for) full-duplex communication. In some other examples, UE 115 can measure the self-interference of the transmit and receive beams of UE 115 in a configuration intended for (or currently being used for) null formation.

[0105] UE 115 can select a preamble format (e.g., RACH preamble) for the RACH signal based on the time offset to be adapted relative to the clutter echo. For example, UE 115 can select a preamble format to adapt to the time offset associated with the maximum round-trip time in the clutter echo detected by UE 115. In some examples, UE 115 can utilize short preamble formats (e.g., format A1, format A2, format A3, format B1, format B2, format B3, format B4, format C0, format C1) for self-interference measurements. In one example, UE 115 can combine a GP (e.g., a relatively large GP) with a short preamble format to accommodate any timing misalignment associated with using a short preamble format.

[0106] Wireless communication system 200 (e.g., base station 105) can configure a pool of RACH preamble identifiers. In some other aspects, wireless communication system 200 can configure a resource pool for UE 115 to transmit RACH signals (e.g., RACH preambles for self-interference measurement), which can provide contention-free access to base station 105. In some examples, wireless communication system 200 can assign one or more preamble identifiers from the preamble identifier pool for UE 115 to transmit RACH preambles (e.g., for self-interference measurement). In some other examples, wireless communication system 200 can (e.g., randomly or based on criteria) assign a set of resources (e.g., for contention-free access to base station 105) from the resource pool to UE 115. Wireless communication system 200 can specifically assign preamble identifiers or resource sets to UE 115, which can mitigate potential conflicts with other devices (e.g., transmissions). In some other aspects, UE 115 may (e.g., randomly or based on standards) select a set of resources from a resource pool (e.g., for contention-free access to base station 105). In some other aspects, UE 115 may (e.g., randomly or based on standards) select a RACH preamble identifier from a RACH preamble identifier pool.

[0107] In some examples, the wireless communication system 200 can configure and indicate the transmit power of a RACH configuration for self-interference measurement. In one example, the wireless communication system 200 can indicate the transmit power in a self-interference measurement configuration (e.g., a RACH configuration for self-interference measurement). In some examples, the wireless communication system 200 can configure a set of RACH resources (e.g., jointly, iteratively, or across RACH periods for self-interference measurement). In some examples, the wireless communication system 200 can configure the steps or levels of power ramping. For example, the wireless communication system 200 can configure an initial transmit power level, a power increase per transmission iteration (e.g., per transmission or retransmission), and the number of transmissions or retransmissions used for power ramping. In one example, the UE 115 can ramp up the transmit power level of a RACH signal (e.g., a RACH preamble) over one or more RACH periods.

[0108] Resources configured for random access and self-interference measurements can be associated with the transmission of other reference signals. For example, wireless communication system 200 can identify resources associated with random access and self-interference measurements and synchronization blocks (e.g., SSBs), and configure (or reconfigure) the resources for random access and self-interference measurements. In some examples, the transmit beam for a RACH signal on a given resource can be associated with a receive beam for receiving an associated reference signal (e.g., SSB) (e.g., quasi-co-located in space). For example, UE 115 can select the transmit beam and receive beam based on the quasi-co-location relationship between the transmit and receive beams. In some examples, UE 115 can select independently configured receive beams (e.g., without a desired or fixed quasi-co-location relationship with the associated reference signal). In one example, UE 115 can use the associated beam to transmit self-interference measurements for random channel access (also known as SIM-RACH).

[0109] In some examples, UE 115 can set the transmit power for the self-interference measurement RACH signal (also known as the SIM-RACH signal) based on a reference signal. For example, UE 115 can use an associated reference signal (e.g., SSB) as a reference signal for path loss estimation to set the transmit power. In some examples, wireless communication system 200 can include a one-to-many mapping between reference signals and self-interference measurement RACH signals. In some examples, wireless communication system 200 can support the transmission of self-interference measurement RACH signals using multiple transmit beams (e.g., performed by UE 115). In some examples, wireless communication system 200 can support the measurement of self-interference measurement RACH signals using multiple receive beams (e.g., performed by UE 115). In some examples, self-interference measurement based on RACH signals can omit the Random Access Response (RAR) or other RACH messages.

[0110] The wireless communication system 200 can support system-wide RACH configuration for self-interference measurement. In one example, the wireless communication system 200 can configure a common resource set for the self-interference measurement RACH. In some examples, the wireless communication system 200 can indicate the self-interference measurement RACH configuration in a System Information Block (SIB) message. In some examples, multiple wireless devices (e.g., UE 115) can utilize common resources for self-interference measurement based on the RACH. In one example, for example, the wireless communication system 200 can reserve a system-wide RACH configuration for self-interference measurement, in addition to other RACH configurations used for other purposes (e.g., initial access, SI request).

[0111] In some examples, base station 105 may avoid receiving transmitted self-interference measurement RACH signals. In some examples, base station 105 may ignore transmitted self-interference measurement RACH signals. In some examples, a node other than base station 105 (e.g., another base station of wireless communication system 200) may use the transmitted self-interference measurement RACH signals for operations such as beam management, interference measurement, or other measurements. In some examples, UE 115 may be configured to perform self-interference measurements using a set of RACH timings within or across RACH periods. For example, UE 115 may be configured with a RACH retransmission set (e.g., wireless communication system 200 may indicate the number of RACH retransmissions). In some examples, UE 115 may employ transmit power ramping on the configured RACH retransmission set.

[0112] UE 115 can generate reports indicating self-interference measurements. In some examples, UE 115 can send reports over RACH payload transmissions. For example, UE 115 can send reports over RACH payload transmissions associated with a RACH preamble. In some examples, UE 115 can send reports based on a two-step RACH operation. UE 115 can use transmit beams from the transmit beam set to transmit RACH signals. In one example, UE 115 can transmit RACH signals. RACH signals may include, for example, a RACH preamble. In some examples, UE 115 can determine (e.g., measure) the self-interference level at UE 115 based on the transmitted RACH signals. For example, UE 115 can receive beams from the receive beam set based on the transmitted RACH signals. UE 115 can determine the self-interference level of the received beams. UE 115 can operate in a mode (e.g., half-duplex, full-duplex) based on the determined self-interference level. UE 115 may send a report including an indication of the self-interference level measured at UE 115. In some examples, UE 115 may determine (e.g., measure) the self-interference level of the received beam based on the RACH configuration. In one example, UE 115 may determine the RACH configuration based on a message from base station 105. This message may include an indication of the RACH configuration.

[0113] Base station 105 can determine the RACH configuration for UE 115 to transmit RACH signals using the transmit beam of UE 115, and determine the self-interference level of the receive beams in the set of receive beams associated with UE 115. In some examples, base station 105 can transmit a message including the RACH configuration. Base station 105 can receive a report including an indication of the determined self-interference level of the receive beams in the set of receive beams associated with UE 115. In some examples, base station 105 can operate in a mode (e.g., half-duplex, full-duplex) based on the received report.

[0114] Base station 105 and UE 115 may include multiple antenna panels, one of which may be dedicated to downlink communication and another to uplink communication. For example, base station 105 and UE 115 may be full-duplex with a split-panel architecture to support simultaneous transmission or reception, or both, in sub-band full-duplex. In some examples, base station 105 or UE 115 may use multiple antenna panels for downlink or uplink communication, while using a single panel (e.g., a half-antenna panel) for sub-band full-duplex downlink or uplink communication. In some cases, as described herein, using multiple antenna panels simultaneously for uplink and downlink communication may result in self-interference. In some cases, due to self-interference, for example, between downlink and uplink communication, the selected downlink or uplink beam may be insufficient for sub-band full-duplex downlink or uplink communication. Therefore, base station 105 or UE 115 may select different directional beams to reduce or avoid self-interference.

[0115] In such a scenario, base station 105 may use two antenna panels for downlink transmission in some time slots. Alternatively, base station 105 may use half a panel for downlink transmission in subband full-duplex time slots. In some examples, the use of antenna panels may affect downlink beamforming between two time slots because the number of ports in each time slot differs, the power in each time slot differs, or both. In some cases, UE 115 may select and recommend precoders and beams for base station 105 for downlink transmission. However, using the selected downlink beam in subband full-duplex may cause self-interference between downlink and uplink transmissions (e.g., backhaul communication from another UE or another base station). That is, base station 105 may determine that selecting a different beam than the beam indicated by UE 115 can reduce or avoid self-interference.

[0116] Figure 3A Examples of wireless communication system 300-a supporting techniques for RACH-based self-interference measurement according to various aspects of this disclosure are shown. In some examples, wireless communication system 300-a may implement aspects of wireless communication system 100 and wireless communication system 200. For example, wireless communication system 300-a may support half-duplex or full-duplex communication. Figure 3A In the examples, device 301 can be configured to support full-duplex communication in wireless communication system 300-a. Device 301 can be an example of base station 105 or UE 115 as described in 1 and 2 herein. In some examples, device 301 can be a backhaul node. In some examples, device 301 can support full-duplex communication with another device (e.g., base station 105, UE 115).

[0117] Device 301 can be configured to operate in half-duplex or full-duplex mode. In half-duplex mode, device 301 can be configured to receive signals from base station 105 (e.g., ...). Figure 1 and 2 (As shown) receiving downlink communication or sending uplink communication to base station 105. In other words, in half-duplex mode, device 301 may not be able to jointly receive downlink communication and send uplink communication within the same time period. However, in full-duplex mode, device 301 can be configured to simultaneously receive downlink communication and send uplink communication from base station 105 (as shown) within the same time period. Figure 1 and 2 (As shown) It receives downlink communication and sends uplink communication to base station 105.

[0118] Device 301 can use one or more directional beams (e.g., transmit beam 310) to provide downlink communication. Similarly, device 301 can use one or more multi-directional beams (e.g., receive beam 311) to receive multiple uplink communications. See reference... Figure 3A In the example where device 301 is base station 105, device 301 can operate in full-duplex mode, while UE115 (such as...) Figure 1 and Figure 2 (As shown) operates in half-duplex mode. In some cases, one or more of device 301 and UE 115 may experience interference in the wireless communication system 300-a. For example, device 301 may experience self-interference from downlink communication to uplink communication (e.g., at transmit antenna 305 and receive antenna 306). In some examples, device 301 may be configured to establish transmitter-receiver array isolation 315 between transmit antenna 305 and receive antenna 306.

[0119] For example, when device 301 is base station 105, device 301 can use its antenna array (e.g., including transmit antenna 305) to transmit downlink communication to UE 115, and use its antenna array (e.g., including receive antenna 306) to receive uplink communication from UE 115. In some cases, device 301 may experience self-interference due to, for example, simultaneous transmission of downlink communication and reception of uplink communication. Alternatively or additionally, refer to Figure 3A In the example where device 301 is UE 115, device 301 can operate in full-duplex mode, while base station 105 (such as...) Figure 1 and 2(As shown) operates in half-duplex mode. In some cases, one or more of device 301 and base station 105 may experience interference in the wireless communication system 300-a. For example, device 301 may experience self-interference from downlink communication to uplink communication (e.g., at transmit antenna 305 and receive antenna 306). For instance, device 301 may use its antenna array (e.g., including transmit antenna 305) to transmit uplink communication to base station 105, and use its antenna array (e.g., including receive antenna 306) to receive downlink communication from base station 105. In some cases, device 301 may experience self-interference, such as simultaneous transmission of downlink communication and reception of uplink communication.

[0120] Figure 3B Examples of wireless communication system 300-b according to various aspects of this disclosure are shown. In some examples, wireless communication system 300-b may implement aspects of wireless communication system 100, wireless communication system 200, and wireless communication system 300-a. Wireless communication system 300-b may support half-duplex or full-duplex communication. Figure 3B In the example, devices 302 and 303 can be configured to support full-duplex communication in wireless communication system 300-b. For example, devices 302 and 303 can support communication with UE 115 (such as...). Figure 1 and 2 (as shown) and base stations (such as) Figure 1 and 2 Full-duplex communication (as shown). Devices 302 and 303 can be the base station 105 described herein (e.g., Figure 1 and 2 As shown), UE 115 (as shown) Figure 1 and 2 (as shown) and device 301 (as shown) Figure 3A Examples are shown. For example, device 302 may include (e.g., an antenna array) a transmitting antenna 305 and (e.g., an antenna array) a receiving antenna 306.

[0121] Device 302 may use one or more directional beams (e.g., transmit beam 310) to transmit downlink communication and one or more directional beams (e.g., receive beam 311) to receive uplink communication. Alternatively or additionally, in the example where device 302 is UE 115, device 302 may use one or more directional beams (e.g., transmit beam 310) to transmit uplink communication and one or more directional beams (e.g., receive beam 311) to receive downlink communication. Figure 3BIn some examples, device 302 may experience self-interference that may be related to downlink and uplink communication between device 302 and device 303. In some examples, device 302 may experience self-interference that may be related to communication signals 325 and 326 between device 302 and device 303. In some examples, device 302 may experience self-interference that may be related to clutter echoes from objects surrounding device 302 (e.g., objects 320 and 321). Objects 320 and 321 may be devices, such as base station 105 (e.g., […]). Figure 1 and 2 As shown), UE 115 (as shown) Figure 1 and 2 (as shown) or device 301 (e.g. Figure 3A (As shown). In some examples, objects 320 and 321 may be non-device objects (e.g., physical objects within the physical environment associated with the wireless communication system 300-b).

[0122] In some cases, the receiving and transmitting antennas of device 302 may generate interference at device 302. For example, at the receiving antenna 306 of device 302, sidelobe 313 may pick up interference signals (e.g., signal 331) from object 320 and interference signals (e.g., signal 336) from object 321, which may increase the interference level in the receiver at device 302. Signals 331 and 336 may be, for example, clutter echoes associated with object 320 and object 321, respectively. In some examples, at the transmitting antenna 305 of device 302, sidelobe radiation (e.g., signals 330, 335) may radiate to object 320 and object 321, which may cause interference at object 320, object 321, device 302, and device 303. In some examples, device 302 may support nulling processes for mitigating clutter interference. For example, device 302 can adjust any combination of transmit and receive beams that may form nulls in the direction of clutter echoes (e.g., in the direction of signals 331 and 336).

[0123] Figure 4 An example of a process flow 400 supporting techniques for RACH-based self-interference measurements is shown, according to various aspects of this disclosure. Process flow 400 can be implemented with reference to... Figure 1 , Figure 2 , Figure 3A , Figure 3B and Figure 4The description covers various aspects of wireless communication system 100, wireless communication system 200, wireless communication device 300-a, and wireless communication device 300-b. Process flow 400 can be based on the configuration of a network device (e.g., base station 405) or a communication device (e.g., UE 415). For example, process flow 400 can be based on the configuration of base station 405 or UE 415 and implemented by UE 415 to reduce power consumption, reduce or eliminate interference, and promote higher reliability and lower latency in full-duplex communication, among other benefits.

[0124] Process flow 400 may include base station 405 and UE 415, which may be as described in reference Figure 1 and 2 Examples of base station 105 and UE 115 are described below. In the following description of process flow 400, operations between base station 405 and UE 415 may be transmitted in a different order than the example order shown, or operations performed by base station 405 and UE 415 may be performed in a different order or at different times. Some operations may also be omitted from process flow 400, and other operations may be added to process flow 400.

[0125] At 410, base station 405 can determine the RACH configuration for UE 415 to transmit RACH signals using transmit beams from the transmit beam set, and determine the self-interference level of the receive beams from the receive beam set associated with UE 415. The RACH configuration may include a set of preamble identifiers for random channel access of UE 415, a set of preamble resources for random channel access of UE 415, or both. In some other aspects, the RACH configuration may include a set of RACH timings or a set of RACH periods. In one example, base station 405 may allocate a set of preamble identifiers, a set of preamble resources, or both.

[0126] At 420, base station 405 may send a message to UE 415. This message may include RACH configuration. This message may be, for example, an SIB message. In some examples, the message may include an indication of a set of preamble identifiers. In some examples, the message may include an indication of a set of preamble resources. The preamble resource set may be associated with one or more reference signals (e.g., SSB, uplink reference signal, or downlink reference signal). In some examples, the preamble resource set may include a common preamble resource set. In some other examples, the message may include an indication of timing advance associated with the RACH signal.

[0127] At 425, UE 415 can determine the RACH configuration (e.g., to determine the self-interference level of the received beams in the set of received beams associated with UE 415). UE 415 can determine the RACH configuration based on the received messages. In some examples, UE 415 can determine the preamble identifier, preamble resource, or both based on the RACH configuration.

[0128] At 430, UE 415 can use a transmit beam from the transmit beam set to transmit a RACH signal. UE 415 can transmit the RACH signal to base station 405 (or another base station). In some examples, UE 415 can transmit the RACH signal based on the transmit power level. For example, UE 415 can determine the transmit power level of the RACH signal based on the RACH configuration. In another example, UE 415 can determine the transmit power level of the RACH signal based on a received reference signal (e.g., received from base station 405 or another base station).

[0129] UE 415 may transmit the RACH signal based on timing advance. In one example, UE 415 may determine the timing advance associated with the RACH signal based on the timing advance indicated in the message received at 420. In some examples, UE 415 may determine the timing advance associated with the RACH signal based on one or more timing advances associated with one or more uplink transmissions (e.g., uplink transmissions to base station 405 or another base station). The timing advance associated with the RACH signal may be the same as (e.g., equal to) one or more timing advances associated with one or more uplink transmissions. In another example, the timing advance associated with the RACH signal may be different from one or more timing advances associated with one or more uplink transmissions.

[0130] UE 415 can transmit RACH signals based on preamble formats. For example, UE 415 can select between a long preamble format (e.g., format 0, format 1, format 2, or format 3) or a short preamble format (e.g., format A1, format A2, format A3, format B1, format B2, format B3, format B4, format C0, format C1) for RACH signals. In some examples, UE 415 can select between long and short preamble formats for RACH signals based on timing offsets.

[0131] In some examples, UE 415 may transmit a RACH signal using a transmit beam from a transmit beam set based on a selected preamble identifier. For example, UE 415 may select a preamble identifier (e.g., randomly or based on a standard) from a set of preamble identifiers indicated in a message received at 420. In one example, the RACH signal transmitted by UE 415 may include a RACH preamble associated with the selected preamble identifier. In some other aspects, UE 415 may transmit a RACH signal using a transmit beam from a transmit beam set based on a selected preamble resource. For example, UE 415 may select a preamble resource (e.g., randomly or based on a standard) from a set of preamble resources indicated in a message received at 420.

[0132] In another example, UE 415 may select a subset of preamble resources from the preamble resource set indicated in the message received at 420. UE 415 may ramp up the transmit power level of the RACH signal during one or more RACH periods based on the selected subset of preamble resources in the preamble resource set. In one example, UE 415 may transmit the RACH signal at 430 using a transmit beam from the transmit beam set based on the ramped transmit power level of the RACH signal during one or more RACH periods.

[0133] At 435, UE 415 can receive a received beam from the received beam set based on the transmitted RACH signal. At 440, UE 415 can determine the self-interference level of the received beam. UE 415 can determine the self-interference level of the received beam based on the determined quasi-colocation relationship between the transmit and receive beams. In one example, UE 415 can select the transmit and receive beams based on the determined quasi-colocation relationship. In some examples, UE 415 can perform RACH operations different from the RACH operations described herein for determining the self-interference level. For example, UE 415 can perform RACH operations such as initial access operations, system information request operations, or beam management operations. For example, at 425, UE 415 can determine the RACH configuration for different RACH operations.

[0134] At 445, UE 415 can generate a report including an indication of the determined self-interference level of the received beam. At 450, UE 415 can send the report to base station 405 (or another base station). In some examples, UE 415 can send the report to base station 405 (or another base station) over RACH payload transmission. For example, UE 415 can send the report in the RACH payload (e.g., RACH preamble) associated with the RACH signal. Base station 405 can thus identify uplink and downlink resource constraints associated with communication with UE 415.

[0135] At 455, UE 415 can operate in a mode (e.g., full-duplex mode) based on a determined self-interference level (e.g., as determined at 440) of the received beam. In some examples, UE 415 can operate in this mode based on a report generated (e.g., at 445) or transmitted (e.g., at 450) that includes an indication of the determined self-interference level. At 460, base station 105 can operate in a mode (e.g., full-duplex mode) based on the received report. For example, base station 105 can operate in a mode based on a determined self-interference level of the received beam, as indicated in the report. At 465, UE 415 can use its transmit and receive beams to transmit data with base station 405.

[0136] Figure 5 A block diagram 500 of a device 505 supporting techniques for RACH-based self-interference measurements is shown, according to various aspects of this disclosure. Device 505 may be an example of various aspects of the device as described herein. Device 505 may include a receiver 510, a communication manager 515, and a transmitter 520. Device 505 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0137] 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 RACH-based self-interference measurements). It can pass this information to other components of device 505. Receiver 510 can be a reference... Figure 8 Examples of various aspects of the transceiver 820 are described. The receiver 510 can utilize a single antenna or a set of antennas.

[0138] The communication manager 515 can transmit a RACH signal using a transmit beam from the transmit beam set. The communication manager 515 can receive a receive beam from the receive beam set based on the transmitted RACH signal and determine the self-interference level of the received beam. The communication manager 515 can operate in a mode based on the determined self-interference level. The communication manager 515 can be an example of various aspects of the communication manager 810 described herein.

[0139] The communication manager 515 can be implemented as an integrated circuit or chipset of a mobile device modem, and the receiver 510 and transmitter 520 can be implemented as analog components (e.g., amplifiers, filters, antennas) coupled to the mobile device modem to enable wireless transmission and reception. The communication manager 515 can be implemented to achieve one or more potential improvements. At least one implementation can enable the communication manager 515 to measure self-interference at device 505 using one or more receive beams from a set of receive beams based on at least one transmitted RACH signal (e.g., RACH preamble). Based on self-interference measurement according to at least one transmitted RACH signal, one or more processors of device 505 (e.g., processors controlling or associated with the communication manager 515) can facilitate highly reliable and low-latency interference measurement operation, as well as other benefits.

[0140] The communication manager 515 or its sub-components may be implemented in hardware, processor-executable code (e.g., software or firmware), or any combination thereof. If implemented in processor-executable code, the functionality of the communication manager 515 or its sub-components may be performed by a general-purpose 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 in this disclosure.

[0141] The communication manager 515 or its subcomponents may be physically located at various locations, including being distributed such that some functions are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of this disclosure, the communication manager 515 or its subcomponents may be separate and distinct components. In some examples, according to various aspects of this disclosure, the communication manager 515 or its subcomponents 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.

[0142] Transmitter 520 can transmit signals generated by other components of device 505. In some examples, transmitter 520 may be co-located with receiver 510 in a transceiver assembly. For example, transmitter 520 may be a reference... Figure 8 Examples of various aspects of the transceiver 820 are described. The transmitter 520 can utilize a single antenna or a set of antennas.

[0143] Figure 6 A block diagram 600 of a device 605 supporting techniques for RACH-based self-interference measurement is shown according to various aspects of this disclosure. Device 605 may be an example of aspects of device 505, base station 105, or UE 115 as described herein. Device 605 may include a receiver 610, a communication manager 615, and a transmitter 640. Device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0144] Receiver 610 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 RACH-based self-interference measurements). It can transmit this information to other components of device 605. Receiver 610 can be a reference... Figure 8 Examples of various aspects of the transceiver 820 are described. The receiver 610 can utilize a single antenna or a set of antennas.

[0145] Communication manager 615 may be an example of aspects of communication manager 515 as described herein. Communication manager 615 may include signal component 620, beam component 625, jamming component 630, and mode component 635. Communication manager 615 may be an example of aspects of communication manager 810 described herein. Signal component 620 may transmit a RACH signal using a transmit beam from a transmit beam set. Beam component 625 may receive a receive beam from a receive beam set based on the transmitted RACH signal. Jamming component 630 may determine the self-interference level of the received beam. Mode component 635 may operate in a mode based on the determined self-interference level.

[0146] Transmitter 640 can transmit signals generated by other components of device 605. In some examples, transmitter 640 may be co-located with receiver 610 in a transceiver assembly. For example, transmitter 640 may be a reference... Figure 8 Examples of various aspects of the transceiver 820 are described. The transmitter 640 can utilize a single antenna or a set of antennas.

[0147] Figure 7A block diagram 700 of a communication manager 705 supporting techniques for RACH-based self-interference measurements is shown according to various aspects of this disclosure. The communication manager 705 may be an example of aspects of the communication manager 515, communication manager 615, or communication manager 810 described herein. The communication manager 705 may include a signal component 710, a beam component 715, an interference component 720, a mode component 725, a configuration component 730, a power component 735, a timing component 740, a preamble component 745, a resource component 750, and a reporting component 755. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0148] Signal component 710 may use a transmit beam from a transmit beam set to transmit RACH signals. In some examples, signal component 710 may use a receive beam set to receive a reference signal set. Signal component 710 may determine the transmit power level of each RACH signal in the RACH signal set for each receive beam in the receive beam set based on the received reference signal set. In some examples, signal component 710 may use the transmit beam set to transmit the RACH signal set based on the determined transmit power level of each RACH signal in the RACH signal set.

[0149] Beaming component 715 can receive a receive beam from a set of receive beams based on the transmitted RACH signal. In some examples, beaming component 715 can select the transmit and receive beams based on determining a quasi-colocation relationship between the transmit and receive beams. Beaming component 715 can use a transmit beam from the set of transmit beams to transmit the RACH signal based on the determined quasi-colocation relationship. In some examples, beaming component 715 can determine the self-interference level of the received beam based on the determined quasi-colocation relationship.

[0150] Beaming component 715 can use a receive beam from the receive beam set to receive a reference signal. In some examples, beaming component 715 can determine the transmit power level of the RACH signal based on the received reference signal. In some examples, beaming component 715 can use a transmit beam from the transmit beam set to transmit the RACH signal based on the determined transmit power level of the RACH signal.

[0151] The jamming component 720 can determine the self-interference level of the received beam. In some examples, the jamming component 720 can determine the self-interference level of the received beam based on a set of transmitted RACH signals using the received beam set. The mode component 725 can operate in a mode based on the determined self-interference level. In some examples, the mode component 725 can operate in a mode based on a determined self-interference level, which is based on a set of transmitted RACH signals using the received beam set. In some cases, the wireless communication includes full-duplex communication.

[0152] Configuration component 730 can determine the RACH configuration. In some examples, configuration component 730 can determine the self-interference level of the received beam based on the RACH configuration. In some examples, configuration component 730 can receive a message including the RACH configuration from the network device. In some examples, configuration component 730 can determine the self-interference level of the received beam based on a message received from the network device. In some examples, configuration component 730 can determine an additional RACH configuration. In some examples, configuration component 730 can perform at least one RACH operation different from determining the self-interference level based on the additional RACH configuration.

[0153] Configuration component 730 can receive SIB messages including RACH configuration from the network device. In some examples, configuration component 730 can determine the self-interference level of the received beam based on the received SIB message including RACH configuration. In some cases, at least one RACH operation includes an initial access operation, a system information request operation, or a beam management operation. Power component 735 can determine the transmit power level of the RACH signal based on the RACH configuration. In some examples, power component 735 can transmit the RACH signal using a transmit beam from the transmit beam set based on the determined transmit power level of the RACH signal.

[0154] Timing component 740 can determine the timing advance associated with the RACH signal based on one or more timing advances associated with one or more uplink transmissions. In some examples, timing component 740 can use transmit beams from a transmit beam set to transmit the RACH signal based on the timing advance. Timing component 740 can receive a message including an indication of the timing advance associated with the RACH signal. In some examples, timing component 740 can use transmit beams from a transmit beam set to transmit the RACH signal based on the timing advance indicated in the received message. Timing component 740 can determine a RACH timing set or a RACH period set, or both, based on the RACH configuration. In some examples, timing component 740 can determine the self-interference level of the received beam based on a RACH timing set or a RACH period set, or both. In some cases, the timing advance associated with the RACH signal is the same as one or more timing advances associated with one or more uplink transmissions. In some cases, the timing advance associated with the RACH signal is different from one or more timing advances associated with one or more uplink transmissions.

[0155] The preamble component 745 can select the preamble format associated with the RACH signal based on a timing offset. In some examples, the preamble component 745 can transmit the RACH signal using a transmit beam from a transmit beam set based on the selected preamble format. In some examples, the preamble component 745 can receive a message including an indication of a set of preamble identifiers or a set of preamble resources, or both. The preamble component 745 can select a preamble identifier from the set of preamble identifiers or a preamble resource from the set of preamble resources, or both, based on the received message. In some examples, the preamble component 745 can transmit the RACH signal using a transmit beam from a transmit beam set based on the selected preamble identifier or the selected preamble resource, or both, wherein the RACH signal includes a RACH preamble associated with the selected preamble identifier. In some examples, the preamble component 745 can randomly select a preamble identifier from the set of preamble identifiers or a preamble resource from the set of preamble resources, or both. In some examples, the preamble component 745 can select a preamble identifier from the preamble identifier set or a preamble resource from the preamble resource set, or both, based on a standard.

[0156] In some examples, the preamble component 745 may receive a message including an indication of a preamble resource set, the preamble resource set including a common preamble resource set for determining the self-interference level at the device and at least one other device. In some examples, the preamble component 745 may determine the self-interference level of the received beam based on the common preamble resource set. In some examples, the preamble component 745 may assign a preamble identifier set or a preamble resource set, or both. In some examples, the preamble component 745 may send a message including an indication of a preamble identifier set or a preamble resource set, or both. In some cases, the preamble format includes a short preamble format or a long preamble format.

[0157] Resource component 750 can select a subset of preamble resources from the preamble resource set. In some examples, resource component 750 can ramp up the transmit power level of the RACH signal over one or more RACH periods based on the selected subset of preamble resources from the preamble resource set. In some examples, resource component 750 can use a transmit beam from the transmit beam set to transmit the RACH signal based on ramping up the transmit power level of the RACH signal over one or more RACH periods. In some cases, the preamble resource set is associated with one or more reference signals. In some cases, the one or more reference signals include an SSB. In some cases, the one or more reference signals include an uplink reference signal or a downlink reference signal, or both.

[0158] Reporting component 755 can transmit a report including an indication of the determined self-interference level of the received beam. In some examples, reporting component 755 can operate in mode based on the transmitted report including an indication of the determined self-interference level of the received beam. In some examples, reporting component 755 can transmit the report in a RACH payload associated with a RACH signal.

[0159] Figure 8 A diagram of a system 800 including a device 805 supporting techniques for RACH-based self-interference measurement is shown according to various aspects of this disclosure. Device 805 may be an example of a device 505, device 605, or device (e.g., base station 105, UE 115, or both) as described herein, or a component including device 505, device 605, or a device (e.g., base station 105, UE 115, or both). Device 805 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a communication manager 810, an I / O controller 815, a transceiver 820, an antenna 825, a memory 830, a processor 840, and an encoding manager 850. These components may communicate electronically via one or more buses (e.g., bus 845).

[0160] Communication manager 810 can transmit RACH signals using transmit beams from a transmit beam set. Communication manager 810 can receive receive beams from a receive beam set based on the transmitted RACH signals and determine the self-interference level of the received beams. Communication manager 810 can operate in a mode based on the determined self-interference level. At least one implementation allows communication manager 810 to measure self-interference at device 805 using one or more receive beams from a receive beam set based on at least one transmitted RACH signal (e.g., RACH preamble). Based on self-interference measurement according to at least one transmitted RACH signal, one or more processors of device 805 (e.g., processors controlling or associated with communication manager 810) can experience reduced power consumption and facilitate highly reliable and low-latency wireless communication (e.g., full-duplex communication), among other benefits.

[0161] I / O controller 815 can manage input and output signals for device 805. I / O controller 815 can also manage peripheral devices not integrated into device 805. In some cases, I / O controller 815 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 815 can utilize, for example... This can be an operating system such as a modem, keyboard, mouse, touchscreen, or similar device, or an interaction with such devices. In some cases, the I / O controller 815 may be implemented as part of a processor. In some cases, a user may interact with device 805 via the I / O controller 815 or via hardware components controlled by the I / O controller 815.

[0162] Transceiver 820 can communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, transceiver 820 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 820 may also include a modem for modulating packets and providing the modulated packets to the antenna for transmission, and for demodulating packets received from the antenna. In some cases, device 805 may include a single antenna 825. However, in some cases, device 805 may have more than one antenna 825, which are capable of transmitting or receiving multiple wireless transmissions simultaneously.

[0163] Memory 830 may include random access memory (RAM) and read-only memory (ROM). Memory 830 may store computer-readable, computer-executable code 835, which includes instructions that, when executed, cause processor 840 to perform the various functions described herein. In some cases, in addition, memory 830 may also include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices. Code 835 may include instructions for implementing various aspects of this disclosure, including instructions for supporting wireless communication. Code 835 may be stored in a non-transitory computer-readable medium (e.g., system memory or other types of memory). In some cases, code 835 may not be directly executable by processor 840, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0164] Processor 840 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, central processing units (CPUs), microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 840 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 840. Processor 840 may be configured to execute computer-readable instructions stored in memory (e.g., memory 830) to cause device 805 to perform various functions (e.g., functions or tasks supporting RACH-based self-interference measurements).

[0165] Figure 9 A block diagram 900 of a network device 905 supporting techniques for RACH-based self-interference measurement is shown according to various aspects of this disclosure. Network device 905 may be an example of various aspects of network device 105 as described herein. Network device 905 may include a receiver 910, a communication manager 915, and a transmitter 920. Network device 905 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0166] 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 RACH-based self-interference measurements). It can transmit this information to other components of network device 905. Receiver 910 can be a reference... Figure 12 Examples of various aspects of the transceiver 1220 are described. The receiver 910 can utilize a single antenna or a set of antennas.

[0167] The communication manager 915 can perform the following operations: determine the RACH configuration for the device to transmit RACH signals using transmit beams from the transmit beam set, and determine the self-interference level of the receive beams from the receive beam set associated with the device; and transmit a message including the RACH configuration. The communication manager 915 may be an example of various aspects of the communication manager 1210 described herein.

[0168] The communication manager 915 or its sub-components may be implemented in hardware, processor-executable code (e.g., software or firmware), or any combination thereof. If implemented in processor-executable code, the functionality of the communication manager 915 or its sub-components may be performed by a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination thereof designed to perform the functions described in this disclosure.

[0169] The communication manager 915 or its sub-components may be physically located at various locations, including being distributed such that some functions are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of this disclosure, the communication manager 915 or its sub-components may be separate and distinct components. In some examples, according to various aspects of this disclosure, the communication manager 915 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 920 can transmit signals generated by other components of network device 905. In some examples, transmitter 920 may be co-located with receiver 910 in a transceiver assembly. For example, transmitter 920 may be a reference... Figure 12 Examples of various aspects of the transceiver 1220 are described. The transmitter 910 can utilize a single antenna or a set of antennas.

[0171] Figure 10 A block diagram 1000 of a network device 1005 supporting techniques for RACH-based self-interference measurement is shown according to various aspects of this disclosure. Network device 1005 may be an example of various aspects of network device 905 or base station 105 as described herein. Network device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1030. Network device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0172] Receiver 1010 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 RACH-based self-interference measurements). It can transmit this information to other components of network device 1005. Receiver 1010 can be a reference... Figure 12 Examples of various aspects of the transceiver 1220 are described. The receiver 1010 may utilize a single antenna or a set of antennas.

[0173] Communication manager 1015 may be an example of aspects of communication manager 915 as described herein. Communication manager 1015 may include configuration component 1020 and messaging component 1025. Communication manager 1015 may be an example of aspects of communication manager 1210 as described herein. Configuration component 1020 may determine the RACH configuration for the device to transmit RACH signals using transmit beams in the transmit beam set, and determine the self-interference level of receive beams in the receive beam set associated with the device. Messaging component 1025 may send a message including the RACH configuration.

[0174] Transmitter 1030 can transmit signals generated by other components of network device 1005. In some examples, transmitter 1030 may be co-located with receiver 1010 in a transceiver assembly. For example, transmitter 1030 may be a reference... Figure 12 Examples of various aspects of the transceiver 1220 are described. The transmitter 1030 may utilize a single antenna or a set of antennas.

[0175] Figure 11 A block diagram 1100 of a communication manager 1105 supporting techniques for RACH-based self-interference measurements is shown according to various aspects of this disclosure. The communication manager 1105 may be an example of aspects of the communication manager 915, communication manager 1015, or communication manager 1210 described herein. The communication manager 1105 may include a configuration component 1110, a messaging component 1115, a reporting component 1120, a mode component 1125, a signaling component 1130, a timing component 1135, and a preamble component 1140. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0176] Configuration component 1110 can determine the RACH configuration for the device to transmit RACH signals using transmit beams from the transmit beam set, and determine the self-interference level of the receive beams from the receive beam set associated with the device. Message component 1115 can send a message including the RACH configuration. Reporting component 1120 can receive a report including an indication of the determined self-interference level of the receive beams from the receive beam set associated with the device. In some examples, reporting component 1120 can receive the report in the RACH payload associated with the RACH signal.

[0177] Mode component 1125 can operate in a mode based on a received report, which includes an indication of a determined self-interference level for a received beam in a set of received beams associated with the device. Signal component 1130 can use a received beam in the set of received beams to receive a RACH signal from the device. In some examples, signal component 1130 can operate in a mode based on a RACH signal received from the device.

[0178] Timing component 1135 can determine the timing advance associated with the RACH configuration based on one or more timing advances associated with one or more uplink transmissions. In some examples, timing component 1135 can use a receive beam from the transmit beam set to receive the RACH signal based on the timing advance. Preamble component 1140 can allocate a preamble identifier set or a preamble resource set, or both. In some examples, preamble component 1140 can send a message including an indication of the preamble identifier set or the preamble resource set, or both.

[0179] Figure 12 A diagram of a system 1200 including a network device 1205 supporting techniques for RACH-based self-interference measurement is shown according to various aspects of this disclosure. The network device 1205 may be an example of a network device 905, network device 1005, or base station 105 as described herein, or a component including a network device 905, network device 1005, or base station 105. The network device 1205 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a communication manager 1210, an I / O controller 1215, a transceiver 1220, an antenna 1225, a memory 1230, and a processor 1235. These components may communicate electronically via one or more buses (e.g., bus 1245).

[0180] The communication manager 1210 can determine the RACH configuration for a device (e.g., UE 115) to use transmit beams from the transmit beam set to transmit RACH signals. The communication manager 1210 can determine the self-interference level of the receive beams in the receive beam set associated with the device and send a message including the RACH configuration.

[0181] I / O controller 1215 can manage input and output signals for network device 1205. I / O controller 1215 can also manage peripheral devices not integrated into network device 1205. In some cases, I / O controller 1215 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1215 can utilize, for example... This can be an operating system such as a modem, keyboard, mouse, touchscreen, or similar device, or an operating system of the known type. In other cases, the I / O controller 1215 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 1215 may be implemented as part of a processor. In some cases, a user may interact with the device 1205 via the I / O controller 1215 or via hardware components controlled by the I / O controller 1215.

[0182] Transceiver 1220 can communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, transceiver 1220 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1220 may also include a modem for modulating packets and providing the modulated packets to the antenna for transmission, and demodulating packets received from the antenna. In some cases, network device 1205 may include a single antenna 1225. However, in some cases, network device 1205 may have more than one antenna 1225, which are capable of transmitting or receiving multiple wireless transmissions simultaneously.

[0183] Memory 1230 may include RAM and ROM. Memory 1230 may store computer-readable, computer-executable code 1240, which includes instructions that, when executed, cause processor 1235 to perform the various functions described herein. In some cases, in addition, memory 1230 may also include a BIOS that controls basic hardware or software operations, such as interaction with peripheral components or devices. Code 1240 may include instructions for implementing various aspects of this disclosure, including instructions for supporting wireless communication. Code 1240 may be stored in a non-transitory computer-readable medium (e.g., system memory or other types of memory). In some cases, code 1240 may not be directly executable by processor 1235, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0184] Processor 1235 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 1235 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1235. Processor 1235 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1230) to cause network device 1205 to perform various functions (e.g., functions or tasks supporting RACH-based self-interference measurements).

[0185] Figure 13 A flowchart illustrating a method 1300 for supporting techniques for RACH-based self-interference measurements according to various aspects of this disclosure is shown. Operation of method 1300 can be implemented by a device or component thereof as described herein. For example, operation of method 1300 can be implemented by, as referred to... Figures 5 to 8 The communication manager described herein is used to perform these functions. In some examples, the device (e.g., base station 105, UE 115) may execute a set of instructions to control the functional units of the device to perform the functions described below. Alternatively, the device (e.g., base station 105, UE 115) may use dedicated hardware to perform aspects of the functions described below.

[0186] At 1305, the device can use a transmit beam from the transmit beam set to transmit a RACH signal. Operation of 1305 can be performed according to the method described herein. In some examples, aspects of the operation of 1305 can be derived as described in reference... Figures 5 to 8 The described signal components are used to perform this action.

[0187] At 1310, the device can receive a receive beam from the receive beam set based on the transmitted RACH signal. Operation of 1310 can be performed according to the method described herein. In some examples, aspects of the operation of 1310 can be derived as described in reference... Figures 5 to 8 The described beamforming components are used to perform this.

[0188] At point 1315, the device can determine the self-interference level of the received beam. Operation at point 1315 can be performed according to the method described herein. In some examples, aspects of operation at point 1315 can be determined by, as referenced... Figures 5 to 8 The described interference components are used to execute.

[0189] At 1320, the UE can operate in a mode based on the determined self-interference level. The operation at 1320 can be performed according to the method described herein. In some examples, aspects of the operation at 1320 can be determined by referring to... Figures 5 to 8 The described pattern components are used for execution.

[0190] Figure 14 A flowchart illustrating a method 1400 for supporting techniques for RACH-based self-interference measurements according to various aspects of this disclosure is shown. Operation of method 1400 can be implemented by a device or component thereof as described herein. For example, operation of method 1400 can be implemented by, as referred to... Figures 5 to 8 The communication manager described herein is used to perform these functions. In some examples, the device (e.g., base station 105, UE 115) may execute a set of instructions to control the functional units of the device to perform the functions described below. Alternatively, the device (e.g., base station 105, UE 115) may use dedicated hardware to perform aspects of the functions described below.

[0191] At point 1405, the device can determine the RACH configuration. Operation at point 1405 can be performed according to the methods described herein. In some examples, aspects of operation at point 1405 can be determined as described in reference... Figures 5 to 8 The configuration components described are used for execution.

[0192] At 1410, the device can determine the transmit power level of the RACH signal based on the RACH configuration. Operation of 1410 can be performed according to the method described herein. In some examples, aspects of the operation of 1410 can be determined as described in reference... Figures 5 to 8 The power components described are used to perform this.

[0193] At point 1415, the device can transmit a RACH signal using a transmit beam from the transmit beam set. Operation at point 1415 can be performed according to the method described herein. In some examples, aspects of operation at point 1415 can be derived as described in reference... Figures 5 to 8 The described signal components are used to perform this action.

[0194] At 1420, the device can receive a receive beam from the receive beam set based on the transmitted RACH signal. Operation at 1420 can be performed according to the method described herein. In some examples, aspects of the operation at 1420 can be derived as described in reference... Figures 5 to 8 The described beamforming components are used to perform this.

[0195] At point 1425, the device can determine the self-interference level of the received beam. Operation at point 1425 can be performed according to the method described herein. In some examples, aspects of operation at point 1425 can be determined by, as referenced... Figures 5 to 8 The described interference components are used to execute.

[0196] At 1430, the UE can operate in a mode based on the determined self-interference level. The operation at 1430 can be performed according to the method described herein. In some examples, aspects of the operation at 1430 can be determined by referring to... Figures 5 to 8 The described pattern components are used for execution.

[0197] Figure 15 A flowchart illustrating a method 1500 for supporting techniques for RACH-based self-interference measurements according to various aspects of this disclosure is shown. Operation of method 1500 can be implemented by a device or component thereof as described herein. For example, operation of method 1500 can be implemented by, as referred to... Figures 5 to 8 The communication manager described herein is used to perform these functions. In some examples, the device (e.g., base station 105, UE 115) may execute a set of instructions to control the functional units of the device to perform the functions described below. Alternatively, the device (e.g., base station 105, UE 115) may use dedicated hardware to perform aspects of the functions described below.

[0198] At 1505, the device can determine the timing advance associated with the RACH signal based on one or more timing advances associated with one or more uplink transmissions. Operation of 1505 can be performed according to the methods described herein. In some examples, aspects of the operation of 1505 can be determined as referenced... Figures 5 to 8 The described timed component is used for execution.

[0199] At 1510, the device can transmit a RACH signal using a transmit beam from the transmit beam set based on a determined timing advance, wherein the timing advance associated with the RACH signal is the same as one or more timing advances associated with one or more uplink transmissions. Operation of 1510 can be performed according to the method described herein. In some examples, aspects of the operation of 1510 can be determined as referenced... Figures 5 to 8 The described signal components are used to perform this action.

[0200] At 1515, the device can receive a receive beam from the receive beam set based on the transmitted RACH signal. Operation at 1515 can be performed according to the method described herein. In some examples, aspects of operation at 1515 can be derived as described in reference... Figures 5 to 8 The described beamforming components are used to perform this.

[0201] At 1520, the device can determine the self-interference level of the received beam. Operation at 1520 can be performed according to the method described herein. In some examples, aspects of operation at 1520 can be determined as described in reference... Figures 5 to 8 The described interference components are used to execute.

[0202] At point 1525, the UE can operate in a mode based on the determined self-interference level. Operation at point 1525 can be performed according to the method described herein. In some examples, aspects of operation at point 1525 can be determined by, as referenced... Figures 5 to 8 The described pattern components are used for execution.

[0203] Figure 16 A flowchart illustrating a method 1600 for supporting techniques for RACH-based self-interference measurements according to various aspects of this disclosure is shown. Operation of method 1600 can be implemented by a device or component thereof as described herein. For example, operation of method 1600 can be performed by, as referenced... Figures 5 to 8 The communication manager described herein is used to perform these functions. In some examples, the device (e.g., base station 105, UE 115) may execute a set of instructions to control the functional units of the device to perform the functions described below. Alternatively, the device (e.g., base station 105, UE 115) may use dedicated hardware to perform aspects of the functions described below.

[0204] At 1605, the device can select the preamble format associated with the RACH signal based on the timing offset. Operation at 1605 can be performed according to the method described herein. In some examples, aspects of operation at 1605 can be determined by reference to... Figures 5 to 8 The described preamble component is used for execution.

[0205] At 1610, the device can transmit a RACH signal using a transmit beam from the transmit beam set based on a selected preamble format, wherein the preamble format includes a short preamble format or a long preamble format. Operation of 1610 can be performed according to the method described herein. In some examples, aspects of the operation of 1610 can be derived from, as referenced... Figures 5 to 8 The described signal components are used to perform this action.

[0206] At point 1615, the device can receive a receive beam from the receive beam set based on the transmitted RACH signal. Operation at point 1615 can be performed according to the method described herein. In some examples, aspects of operation at point 1615 can be derived as described in reference... Figures 5 to 8 The described beamforming components are used to perform this.

[0207] At 1620, the device can determine the self-interference level of the received beam. Operation at 1620 can be performed according to the method described herein. In some examples, aspects of operation at 1620 can be determined as described in reference... Figures 5 to 8 The described interference components are used to execute.

[0208] At point 1625, the UE can operate in a mode based on the determined self-interference level. Operation at point 1625 can be performed according to the method described herein. In some examples, aspects of operation at point 1625 can be determined by, as referenced... Figures 5 to 8 The described pattern components are used for execution.

[0209] Figure 17 A flowchart illustrating a method 1700 for supporting techniques for RACH-based self-interference measurement according to various aspects of this disclosure is shown. Operation of method 1700 can be implemented by a network device or its components as described herein. For example, operation of method 1700 can be implemented by, as referred to... Figures 9 to 12 The network device executes the described communication manager. In some examples, the network device may execute a set of instructions to control the functional units of the network device to perform the functions described below. Alternatively, the network device may use dedicated hardware to perform aspects of the functions described below.

[0210] At 1705, the network device can determine the RACH configuration for the device to transmit RACH signals using transmit beams from the transmit beam set, and determine the self-interference level of the receive beams from the receive beam set associated with the device. Operation at 1705 can be performed according to the method described herein. In some examples, aspects of operation at 1705 can be determined by, as referenced... Figures 9 to 12 The configuration components described are used for execution.

[0211] At 1710, network devices can send messages including RACH configuration. Operations at 1710 can be performed according to the methods described herein. In some examples, aspects of the operation at 1710 can be derived from, as referenced... Figures 9 to 12 The message component described is used for execution.

[0212] The following provides an overview of the various aspects of this disclosure:

[0213] Aspect 1: A method for wireless communication at a device, comprising: transmitting a RACH signal using a transmit beam from a transmit beam set; receiving a receive beam from a receive beam set based at least in part on the transmitted RACH signal; determining a self-interference level of the received beam; and operating in a mode based at least in part on the determined self-interference level.

[0214] Aspect 2: The method according to aspect 1 further includes: determining a RACH configuration, wherein determining the self-interference level includes: determining the self-interference level of the received beam based at least in part on the RACH configuration.

[0215] Aspect 3: The method according to aspect 2 further includes: receiving a message including the RACH configuration from a network device, wherein determining the self-interference level includes: determining the self-interference level of the received beam based at least in part on the message received from the network device.

[0216] Aspect 4: The method according to any one of Aspects 2 to 3 further includes: determining the transmit power level of the RACH signal at least in part based on the RACH configuration, wherein transmitting the RACH signal includes: transmitting the RACH signal using the transmit beams in the transmit beam set at least in part based on the determined transmit power level of the RACH signal.

[0217] Aspect 5: The method according to any one of Aspects 1 to 4 further includes: determining a timing advance associated with the RACH signal based at least in part on one or more timing advances associated with one or more uplink transmissions, wherein transmitting the RACH signal includes: transmitting the RACH signal using the transmit beams in the transmit beam set based at least in part on the timing advance, wherein the timing advance associated with the RACH signal and the one or more timing advances associated with the one or more uplink transmissions are the same.

[0218] Aspect 6: The method according to any one of Aspects 1 to 5 further includes: receiving a message including an indication of timing advance associated with the RACH signal, wherein transmitting the RACH signal includes: transmitting the RACH signal using the transmit beams in the transmit beam set based at least in part on the timing advance indicated in the received message, wherein the timing advance associated with the RACH signal is different from one or more timing advances associated with one or more uplink transmissions.

[0219] Aspect 7: The method according to any one of Aspects 1 to 6 further includes: selecting a preamble format associated with the RACH signal at least in part based on a timing offset, wherein transmitting the RACH signal includes: transmitting the RACH signal using the transmit beams in the transmit beam set at least in part based on the selected preamble format, wherein the preamble format includes a short preamble format or a long preamble format.

[0220] Aspect 8: The method according to any one of Aspects 1 to 7 further includes: receiving a message including an indication of a set of preamble identifiers or a set of preamble resources, or both, wherein the set of preamble resources is associated with one or more reference signals, the one or more reference signals including one or more of an SSB, an uplink reference signal, or a downlink reference signal; selecting a preamble identifier in the set of preamble identifiers or a preamble resource in the set of preamble resources, or both, at least in part based on the received message, wherein transmitting the RACH signal includes: transmitting the RACH signal using the transmit beam in the set of transmit beams, at least in part based on the selected preamble identifier or the selected preamble resource, or both, wherein the RACH signal includes a RACH preamble associated with the selected preamble identifier.

[0221] Aspect 9: According to the method of aspect 8, wherein selecting the preamble identifier in the preamble identifier set or the preamble resource in the preamble resource set, or both, comprises: randomly selecting the preamble identifier in the preamble identifier set or the preamble resource in the preamble resource set, or both.

[0222] Aspect 10: The method according to any one of Aspects 8 to 9, wherein selecting the preamble identifier in the preamble identifier set or the preamble resource in the preamble resource set, or both, comprises: selecting the preamble identifier in the preamble identifier set or the preamble resource in the preamble resource set, or both, at least in part based on a standard.

[0223] Aspect 11: The method according to any one of Aspects 8 to 10 further includes: selecting a subset of preamble resources of the preamble resource set; ramping up the transmit power level of the RACH signal over one or more RACH periods at least in part based on the selected subset of preamble resources of the preamble resource set, wherein transmitting the RACH signal includes: using the transmit beams in the transmit beam set to transmit the RACH signal at least in part based on ramping up the transmit power level of the RACH signal over the one or more RACH periods.

[0224] Aspect 12: The method according to any one of Aspects 1 to 11 further includes: selecting the transmit beam and the receive beam at least in part based on determining a quasi-colocation relationship between the transmit beam and the receive beam, wherein transmitting the RACH signal includes: using the transmit beams in the set of transmit beams to transmit the RACH signal at least in part based on the determined quasi-colocation relationship, wherein determining the self-interference level includes: determining the self-interference level of the received beam at least in part based on the determined quasi-colocation relationship.

[0225] Aspect 13: The method according to any one of Aspects 1 to 12 further includes: receiving a reference signal using the receiving beams in the receiving beam set; determining the transmit power level of the RACH signal based at least in part on the received reference signal, wherein transmitting the RACH signal includes: transmitting the RACH signal using the transmit beams in the transmitting beam set based at least in part on the determined transmit power level of the RACH signal.

[0226] Aspect 14: The method according to any one of Aspects 1 to 13 further includes: using the receive beam set to receive a plurality of reference signals; determining, at least in part, a transmit power level of each RACH signal in a set of RACH signals for each receive beam in the receive beam set based on the received plurality of reference signals, wherein transmitting the RACH signals includes: using the transmit beam set to transmit the set of RACH signals based at least in part on the determined transmit power level of each RACH signal in the set of RACH signals.

[0227] Aspect 15: The method according to aspect 14, wherein determining the self-interference level comprises: determining the self-interference level of the received beam at least in part based on the set of transmitted RACH signals using the received beam set, wherein operating in the mode comprises: operating in the mode at least in part based on the determined self-interference level, the determined self-interference level being at least in part based on the set of transmitted RACH signals using the received beam set.

[0228] Aspect 16: The method according to any one of Aspects 1 to 15 further includes: receiving a message including an indication of a preamble resource set, the preamble resource set including a common preamble resource set for determining the self-interference level at the device and at least one other device, wherein determining the self-interference level set includes: determining the self-interference level of the received beam based at least in part on the common preamble resource set.

[0229] Aspect 17: The method according to any one of Aspects 1 to 16 further includes: determining an additional RACH configuration; and performing at least one RACH operation different from determining the self-interference level based at least in part on the additional RACH configuration, wherein the at least one RACH operation includes an initial access operation, a system information request operation, or a beam management operation.

[0230] Aspect 18: The method according to any one of Aspects 1 to 17 further includes: receiving from a network device a SIB message including a RACH configuration, wherein determining the self-interference level includes: determining the self-interference level of the received beam based at least in part on the received SIB message including the RACH configuration.

[0231] Aspect 19: The method according to any one of Aspects 1 to 18 further includes: determining a RACH timing set or a RACH time period set, or both, at least in part based on the RACH configuration, wherein determining the self-interference level includes: determining the self-interference level of the received beam at least in part based on the RACH timing set or the RACH time period set, or both.

[0232] Aspect 20: The method according to any one of aspects 1 to 19 further includes: allocating a set of preamble identifiers or a set of preamble resources, or both; and sending a message including an indication to the set of preamble identifiers or the set of preamble resources, or both.

[0233] Aspect 21: The method according to any one of aspects 1 to 20 further includes: transmitting a report including an indication of a determined level of self-interference of the received beam, wherein operating in the mode comprises: operating in the mode at least in part based on the transmitted report including the indication of a determined level of self-interference of the received beam.

[0234] Aspect 22: According to the method of aspect 21, sending the report includes: sending the report in a RACH payload associated with the RACH signal.

[0235] Aspect 23: The method according to any one of Aspects 1 to 22, wherein the wireless communication includes full-duplex communication.

[0236] Aspect 24: A method for wireless communication at a network device, comprising: determining a RACH configuration for the device to transmit RACH signals using transmit beams in a set of transmit beams, and determining a self-interference level of receive beams in a set of receive beams associated with the device; and transmitting a message including the RACH configuration.

[0237] Aspect 25: The method according to aspect 24 further includes: receiving a report including an indication of a determined self-interference level of the received beams in the set of received beams associated with the device; and operating in a mode at least partially based on the received report, the received report including the indication of the determined self-interference level of the received beams in the set of received beams associated with the device.

[0238] Aspect 26: The method according to aspect 25, wherein receiving the report includes: receiving the report in a RACH payload associated with the RACH signal.

[0239] Aspect 27: The method according to any one of aspects 24 to 26 further includes: receiving the RACH signal from the device using a receive beam from a set of receive beams; and operating in a mode based at least in part on the RACH signal received from the device.

[0240] Aspect 28: The method according to aspect 27 further includes: determining a timing advance associated with the RACH configuration based at least in part on one or more timing advances associated with one or more uplink transmissions, wherein receiving the RACH signal includes: using the receive beam in the transmit beam set to receive the RACH signal based at least in part on the timing advance.

[0241] Aspect 29: The method according to any one of Aspects 24 to 28 further includes: allocating a set of preamble identifiers or a set of preamble resources, or both, wherein sending the message includes: sending the message including an indication to the set of preamble identifiers or the set of preamble resources, or both.

[0242] Aspect 30: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to any one of aspects 1 to 23.

[0243] Aspect 31: An apparatus for wireless communication at a device, comprising at least one unit for performing the method according to any one of aspects 1 to 23.

[0244] Aspect 32: A non-transitory computer-readable medium storing code for wireless communication at a device, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 23.

[0245] Aspect 33: An apparatus for wireless communication at a network device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to any one of aspects 24 to 29.

[0246] Aspect 34: An apparatus for wireless communication at a network device, comprising at least one unit for performing the method according to any one of aspects 24 to 29.

[0247] Aspect 35: A non-transitory computer-readable medium storing code for wireless communication at a network device, said code including instructions executable by a processor to perform the method according to any one of aspects 24 to 29.

[0248] 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 possible. Furthermore, aspects from two or more methods can be combined.

[0249] 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 technologies described herein apply beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, this disclosure 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.

[0250] The information and signals described herein can be represented using any of a variety of different techniques and methods. For example, the data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, light fields or particles, or any combination thereof.

[0251] The various illustrative blocks and components described herein can be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but alternatively, 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 combined with a DSP core, or any other such configuration).

[0252] The functions described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions can be stored as one or more instructions or code on or transmitted through a computer-readable medium. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing the functions can also be physically located in various locations, including being distributed such that different parts of the functions are implemented in different physical locations.

[0253] Computer-readable media includes both non-transitory computer storage media and communication media, with communication media encompassing any medium that facilitates the transfer of computer programs from one place to another. Non-transitory storage media can be any available medium accessible by a general-purpose computer or a special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compressed optical disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired units of program code in the form of instructions or data structures, and accessible by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately 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 coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs, wherein disks typically copy data magnetically, while optical discs use lasers to copy data optically. The combinations described above are also included within the scope of computer-readable media.

[0254] As used herein (including in the claims), the word "or" in a list of items (e.g., a list of items ending with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, such that a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could 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 way as the phrase "at least partially based on".

[0255] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by a dash and a second reference numeral following the reference numeral, used to differentiate between similar components. If only the first reference numeral is used in the specification, the description applies to any one of the similar components having the same first reference numeral, without regard to the second reference numeral or other subsequent reference numerals.

[0256] This document describes exemplary configurations with reference to the accompanying drawings, but does not represent all examples that can be implemented or that are within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," and not "preferred" or "advantageous over other examples." Detailed descriptions, including specific details, are provided for the purpose of providing an understanding of this disclosure. However, these techniques may be implemented without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of this disclosure.

[0257] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, the present disclosure is not limited to the examples and designs described herein, but is to be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a device, comprising: The preamble format associated with the random access channel signal is identified at least in part based on the timing offset, wherein the preamble format includes a short preamble format or a long preamble format; The random access channel signal is transmitted using a transmit beam from the transmit beam set, based at least in part on the identified preamble format; The receive beams in the receive beam set are received at least in part based on the transmitted random access channel signals; Determine the self-interference level of the received beam; and Operate in a mode based at least in part on the determined level of self-interference.

2. The method according to claim 1, further comprising: Determining the random access channel configuration, wherein determining the self-interference level includes: The self-interference level of the received beam is determined at least in part based on the random access channel configuration.

3. The method according to claim 2, further comprising: Receive a message from the network device including the random access channel configuration, wherein determining the self-interference level includes: The self-interference level of the received beam is determined at least in part based on messages received from the network device.

4. The method according to claim 2, further comprising: The transmit power level of the random access channel signal is determined at least in part based on the random access channel configuration, wherein transmitting the random access channel signal includes: The random access channel signal is transmitted using the transmit beams in the transmit beam set, based at least in part on the determined transmit power level of the random access channel signal.

5. The method according to claim 1, further comprising: The timing advance associated with the random access channel signal is determined at least in part based on one or more timing advances associated with one or more uplink transmissions, wherein transmitting the random access channel signal includes: The random access channel signal is transmitted using the transmit beams from the transmit beam set, based at least in part on the timing advance. The timing advance associated with the random access channel signal and the timing advance associated with the one or more uplink transmissions are the same timing advance.

6. The method according to claim 1, further comprising: Receiving a message including an indication of timing advance associated with the random access channel signal, wherein sending the random access channel signal includes: The random access channel signal is transmitted using the transmit beams from the transmit beam set, based at least in part on the timing advance indicated in the received message. The timing advance associated with the random access channel signal is different from the timing advance associated with one or more uplink transmissions.

7. The method according to claim 2, further comprising: Determine the configuration of additional random access channels; as well as At least one random access channel operation, different from the one used to determine the self-interference level, is performed based at least in part on the additional random access channel configuration. The at least one random access channel operation includes an initial access operation, a system information request operation, or a beam management operation.

8. The method according to claim 1, further comprising: Receive a message including an indication of a set of preamble identifiers or a set of preamble resources, or both, wherein the set of preamble resources is associated with one or more reference signals, the one or more reference signals including one or more of a synchronization signal block, an uplink reference signal, or a downlink reference signal; and Selecting a preamble identifier from the preamble identifier set or a preamble resource from the preamble resource set, or both, at least in part based on the received message, wherein transmitting the random access channel signal includes: The random access channel signal is transmitted using the transmit beams from the transmit beam set, at least in part based on the selected preamble identifier or the selected preamble resource, or both. The random access channel signal includes a random access channel preamble associated with the selected preamble identifier.

9. The method according to claim 8, wherein, Selecting either the preamble identifier from the preamble identifier set or the preamble resource from the preamble resource set, or both: Randomly select the preamble identifier from the preamble identifier set or the preamble resource from the preamble resource set, or both.

10. The method according to claim 8, wherein, Selecting either the preamble identifier from the preamble identifier set or the preamble resource from the preamble resource set, or both: The selection of the preamble identifier from the set of preamble identifiers or the preamble resource from the set of preamble resources, or both, is based at least in part on a standard.

11. The method of claim 8, further comprising: Select a subset of the preamble resources from the preamble resource set; as well as At least in part based on a subset of the selected preamble resources of the preamble resource set, the transmit power level of the random access channel signal is ramped up over one or more random access channel periods, wherein transmitting the random access channel signal includes: The random access channel signal is transmitted using the transmit beams in the transmit beam set, based at least in part on ramping up the transmit power level of the random access channel signal during one or more random access channel periods.

12. The method according to claim 1, further comprising: The selection of the transmit beam and the receive beam is based at least in part on determining a quasi-co-location relationship between the transmit beam and the receive beam, wherein transmitting the random access channel signal includes: The random access channel signal is transmitted using the transmit beams in the transmit beam set, at least in part based on the determined quasi-co-location relationship, wherein determining the self-interference level includes: The self-interference level of the received beam is determined at least in part based on the established quasi-colocation relationship.

13. The method according to claim 1, further comprising: The reference signal is received using the receiving beams in the set of receiving beams; The transmit power level of the random access channel signal is determined at least in part based on the received reference signal, wherein transmitting the random access channel signal includes: The random access channel signal is transmitted using the transmit beams in the transmit beam set, based at least in part on the determined transmit power level of the random access channel signal.

14. The method according to claim 1, further comprising: The receiving beam set is used to receive multiple reference signals; as well as The transmit power level of each random access channel signal in the set of random access channel signals for each of the received beam sets is determined at least in part based on a plurality of received reference signals, wherein transmitting the random access channel signals includes: The set of transmit beams is used to transmit the set of random access channel signals, at least in part, based on the transmit power level of each random access channel signal in the determined set of random access channel signals.

15. The method according to claim 14, wherein, Determining the self-interference level includes: The self-interference level of the received beam is determined at least in part based on the set of transmitted random access channel signals using the received beam set, wherein operation in the mode includes: Operating in the mode based at least in part on a determined level of self-interference, which is based at least in part on a set of transmitted random access channel signals using the set of received beams.

16. The method according to claim 1, further comprising: Receive a message including an indication of a preamble resource set, the preamble resource set including a common preamble resource set for determining the self-interference level at the device and at least one other device, wherein determining the self-interference level includes: The self-interference level of the received beam is determined at least in part based on the set of public preamble resources.

17. The method according to claim 1, further comprising: Receive a system information block message from the network device, including a random access channel configuration, wherein determining the self-interference level includes: The self-interference level of the received beam is determined at least in part based on the received system information block messages, including the random access channel configuration.

18. The method according to claim 1, further comprising: The random access channel timing set or random access channel time period set, or both, is determined at least in part based on the random access channel configuration, wherein determining the self-interference level includes: The self-interference level of the received beam is determined at least in part based on the set of random access channel timings or the set of random access channel time periods, or both.

19. The method according to claim 1, further comprising: Allocate a set of preamble identifiers or a set of preamble resources, or both. as well as Send a message that includes an indication of the set of preamble identifiers or the set of preamble resources, or both.

20. The method according to claim 1, further comprising: Transmitting a report including an indication of the determined self-interference level of the received beam, wherein operation in the mode includes: The system operates in the mode based at least in part on the transmitted report, which includes an indication of the determined self-interference level of the received beam, wherein... The modes include half-duplex communication mode or full-duplex communication mode.

21. The method according to claim 20, wherein, Sending the report includes: The report is transmitted in the random access channel payload associated with the random access channel signal.

22. A method for wireless communication at a network device, comprising: A random access channel configuration is determined for the device to transmit random access channel signals using transmit beams from a set of transmit beams, and a self-interference level is determined for receive beams from a set of receive beams associated with the device, wherein the self-interference level is associated with the network device operating in a mode, and wherein the random access channel signals are associated with a preamble format based at least in part on a timing offset, the preamble format including a short preamble format or a long preamble format; and Send a message including the random access channel configuration.

23. The method of claim 22, further comprising: Receive a report including an indication of the determined self-interference level of the received beams in the set of received beams associated with the device; as well as Operating in a mode at least in part based on received reports, the received reports including an indication of a determined self-interference level for the received beams in the set of received beams associated with the device, wherein, The modes include half-duplex communication mode or full-duplex communication mode.

24. The method according to claim 23, wherein, Receiving the report includes: The report is received in the random access channel payload associated with the random access channel signal.

25. The method of claim 22, further comprising: The random access channel signal is received from the device using a receive beam from the receive beam set; as well as It operates in a mode based at least in part on the random access channel signal received from the device.

26. The method of claim 25, further comprising: The timing advance associated with the random access channel configuration is determined at least in part based on one or more timing advances associated with one or more uplink transmissions, wherein receiving the random access channel signal includes: The random access channel signal is received using the receive beam from the transmit beam set, at least in part based on the timing advance.

27. The method of claim 22, further comprising: Allocating a set of preamble identifiers or a set of preamble resources, or both, wherein sending the message includes: Send the message which includes an indication of the set of preamble identifiers or the set of preamble resources, or both.

28. An apparatus for wireless communication, comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, cause the device to perform the following operations: The preamble format associated with the random access channel signal is identified at least in part based on the timing offset, wherein the preamble format includes a short preamble format or a long preamble format; The random access channel signal is transmitted using a transmit beam from the transmit beam set, based at least in part on the identified preamble format; The receive beams in the receive beam set are received at least in part based on the transmitted random access channel signals; Determine the self-interference level of the received beam; and Operate in a mode based at least in part on the determined level of self-interference.

29. The apparatus according to claim 28, wherein, The instructions may also be executed by the processor to cause the device to perform the method according to any one of claims 2-21.

30. An apparatus for wireless communication, comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, cause the device to perform the following operations: A random access channel configuration is determined for the device to transmit random access channel signals using transmit beams from a transmit beam set, and a self-interference level of the receive beams from a receive beam set associated with the device is determined, wherein the self-interference level is associated with network device operation in a mode, and wherein the random access channel signals are associated with a preamble format based at least in part on a timing offset, the preamble format including a short preamble format or a long preamble format; and Send a message including the random access channel configuration.

31. The apparatus according to claim 30, wherein, The instructions may also be executed by the processor to cause the device to perform the method according to any one of claims 23-27.

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