Patent Description:
<CIT> relates to a full-duplex transmission control method, user equipment, and a base station.

<CIT> relates to a signal transmission method and device.

In the following, each of the described methods, apparatuses, examples, and aspects which do not fully correspond to the invention as defined in the claims is thus not according to the invention and is, as well as the whole following description, present for illustration purposes only or to highlight specific aspects or features of the claims.

<NUM> wireless networks are designed to provide a high data rate and to support a wide scope of application scenarios. Wireless full-duplex communication is a technique intended to increase link capacity in <NUM> wireless networks and/or to reduce latency for time-critical services. Wireless full-duplex enables radio network nodes to transmit and receive simultaneously on the same frequency band and at the same time slot. This contrasts with conventional half-duplex operation where transmission and reception differ in either time or in frequency. In full-duplex communications, a node, such as a base station (BS) or a user equipment (UE), can communicate simultaneously in uplink and downlink directions with two half-duplex nodes using the same radio resources (e.g., the same frequency band and time slot). Another full-duplex scenario includes one relay node communicating simultaneously with an anchor node and a mobile node in a one-hop manner.

One issue with full-duplex communications is self-interference cancelation. In order for a radio network node to implement full-duplex communications, the node needs to be capable of canceling self-interference from simultaneous downlink and uplink communications. For example, uplink and downlink communications can coexist at the same frequency and time resources at a BS with use of full-duplex (e.g., the BS can receive an uplink communication from a first UE at a same time and at a same frequency at which the BS is transmitting a downlink communication to a second UE). As another example, an integrated and backhaul (IAB) node, which functions as a relay node between an IAB donor and a UE, can receive backhaul downlink communications on the same time-frequency resources that the IAB node is using to transmit access downlink communications to the UE, or vice versa (e.g., the IAB node may receive access uplink communications from the UE on the same time-frequency resources that the IAB node is using to transmit backhaul uplink communications to the IAB donor). Some techniques for canceling self-interference use beamforming, analog cancelation, digital cancelation, and/or antenna cancelation to cancel self-interference.

In addition to the self-interference issue, in practice, different communications from and/or to different wireless nodes have different loads and/or urgencies. For example, in some scenarios, the communications associated with a BS may include uplink enhanced mobile broadband (eMBB)-related communications that are high loaded (and thus need to occupy all radio resources of a slot), and downlink ultra reliable low latency communication (URLLC)-related communications that are low loaded but have a high urgency (and thus cannot wait until the uplink eMBB-related communications have been transmitted). As another example for IAB nodes, backhaul communications or access communications may be high loaded or may be low loaded and have a high urgency depending on a direction of the communications, similar to that described with regard to eMBB-related and URLLC-related communications.

In these examples, some part of the radio resources within a slot can be used for full-duplex communications, while other radio resources cannot be used for full-duplex communications. When all radio resources of a slot are used for full-duplex, all of the uplink communications experience the same self-interference from the downlink communications. In this case, the BS can determine a transmit power configuration, for communication on the uplink (e.g., physical uplink shared channel (PUSCH) communication), based at least in part on the expected self-interference, and the BS can configure the UE to utilize prior operations which are regulated for non-full-duplex communications. However, when a subset of the radio resources in a slot is used for full-duplex communications and another subset is used for non-full-duplex communications, the self-interference may not occur until full-duplex is used. In this case, using prior operations creates a conflicting choice for the BS. If the BS configures the UE with a transmit power configuration that is determined based on non-full-duplex (e.g., uplink-only) radio resources, the reception performance of PUSCH communications at the BS will be degraded. Conversely, if the BS configures the UE with a transmit power configuration that is based at least in part on the radio resources used for full-duplex, the transmit performance of the PUSCH communications become inefficient.

Some techniques and apparatuses described herein provide for physical uplink shared channel (PUSCH) transmit power configuration. In some aspects, a BS may transmit, to a wireless communication device (e.g., a UE, an IAB node, and/or the like), an indication of a first transmit power configuration and a second transmit power configuration for a PUSCH communication. The wireless communication device may receive the indication of the first transmit power configuration and the second transmit power configuration, and may transmit, using a first transmit power that is based at least in part on the first transmit power configuration, a first portion of the PUSCH communication in a full-duplex portion of a time-frequency resource, and transmit, using a second transmit power that is based at least in part on the second transmit power configuration, a second portion of the PUSCH communication in a non-full-duplex portion of the time-frequency resource.

In this way, utilizing different transmit powers mitigates self-interference that might occur at a BS that is using full-duplex communications, thereby improving use of full-duplex. This facilitates use of full-duplex and non-full-duplex (e.g., half-duplex) in a single slot, without degrading a performance of communications, without decreasing an efficiency of the communications, and/or the like. Further, some techniques and apparatuses described herein reduce or eliminate a need to suspend on-going uplink communications for new downlink traffic by providing a way to perform the downlink transfer at any time during the on-going uplink transfer, or vice versa. Further, some techniques and apparatuses described herein maximize utilization of channel capacity (e.g., for eMBB services) while facilitating low latency (e.g., for URLLC services).

These apparatuses and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements").

A BS is an entity that communicates with user equipment (UEs) (e.g., using full-duplex communication, non-full-duplex communication, and/or the like) and may also be referred to as a base station, a NR BS, a Node B, a gNB, a <NUM> node B (NB), an access point, a transmit receive point (TRP), and/or the like. In some aspects, a BS may configure a UE with one or more transmit power configurations for communicating with the BS using full-duplex communication, non-full-duplex communication, and/or the like, as described herein.

A relay station may also be referred to as a relay BS, a relay base station, a relay, etc..

Wireless network <NUM> may be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in wireless network <NUM>.

A UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc. A UE may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.

MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a base station, another device (e.g., remote device), or some other entity.

Transmit processor <NUM> may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.) and provide overhead symbols and control symbols.

A channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE <NUM> may be included in a housing.

On the uplink, at UE <NUM>, a transmit processor <NUM> may receive and process data from a data source <NUM> and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, CQI, etc.) from controller/processor <NUM>. The symbols from transmit processor <NUM> may be precoded by a TX MIMO processor <NUM> if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to base station <NUM>.

Controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform one or more techniques associated with PUSCH transmit power configuration, as described in more detail elsewhere herein. For example, controller/processor <NUM> of base station <NUM>, controller/processor <NUM> of UE <NUM>, and/or any other component(s) of <FIG> may perform or direct operations of, for example, process <NUM> of <FIG>, process <NUM> of <FIG>, and/or other processes as described herein. Memories <NUM> and <NUM> may store data and program codes for base station <NUM> and UE <NUM>, respectively.

The stored program codes, when executed by processor <NUM> and/or other processors and modules at UE <NUM>, may cause the UE <NUM> to perform operations described with respect to process <NUM> of <FIG> and/or other processes as described herein. The stored program codes, when executed by processor <NUM> and/or other processors and modules at base station <NUM>, may cause the base station <NUM> to perform operations described with respect to process <NUM> of <FIG>, process <NUM> of <FIG>, and/or other processes as described herein.

In some aspects, a wireless communication device (e.g., base station <NUM>, UE <NUM>) may include means for receiving an indication of a first transmit power configuration and a second transmit power configuration for a PUSCH communication, means for transmitting, using a first transmit power that is based at least in part on the first transmit power configuration, a first portion of the PUSCH communication in a full-duplex portion of a time-frequency resource, means for transmitting, using a second transmit power that is based at least in part on the second transmit power configuration, a second portion of the PUSCH communication in a non-full-duplex portion of the time-frequency resource, and/or the like. In some aspects, such means may include one or more components of base station <NUM> and/or UE <NUM> described in connection with <FIG>.

In some aspects, base station <NUM> may include means for transmitting an indication of a first transmit power configuration and a second transmit power configuration for a PUSCH communication, means for receiving a first portion of the PUSCH communication that is transmitted in a full-duplex portion of a time-frequency resource and at a first transmit power that is based at least in part on the first transmit power configuration, means for receiving a second portion of the PUSCH communication that is transmitted in a non-full-duplex portion of the time-frequency resource and at a second transmit power that is based at least in part on the second transmit power configuration, and/or the like. In some aspects, such means may include one or more components of base station <NUM> described in connection with <FIG>.

For example, the functions described with respect to the transmit processor <NUM>, the receive processor <NUM>, and/or the TX MIMO processor <NUM> may be performed by or under the control of processor <NUM>.

<FIG> are diagrams illustrating one or more examples <NUM> of PUSCH transmit power configuration, in accordance with various aspects of the present disclosure. As shown in <FIG>, one or more examples <NUM> include a BS (e.g., BS <NUM>) and a wireless communication device (e.g., another BS <NUM>, UE <NUM>, and/or the like).

In some aspects, the BS may determine a time-frequency resource (e.g., one or more symbols, one or more slots, one or more resource elements, one or more resource blocks, and/or the like) in which full-duplex communication and non-full-duplex communication are to be performed. In this case, the BS may determine a non-full-duplex portion of the time-frequency resource and a full-duplex portion of the time-frequency resource based at least in part on having data to transmit to the wireless communication device and/or based at least in part on having data to receive from the wireless communication device in the time-frequency resource. The full-duplex portion may be intended for simultaneous downlink transmission (e.g., for transmitting one or more PDSCH communications to the wireless communication device, to another wireless communication device, and/or the like) and uplink reception (e.g., for receiving one or more PUSCH communications from the wireless communication device), and the non-full-duplex portion may be intended for only reception (e.g., for receiving one or more PUSCH communications from the wireless communication device).

As shown in <FIG>, and by reference number <NUM>, the BS may transmit, based at least in part on determining the time-frequency resource in which full-duplex communication and non-full-duplex communication are to be performed, an indication of a first transmit power configuration and a second transmit power configuration to the wireless communication device. In some aspects, the BS may transmit the indication of the first transmit power configuration and the second transmit power configuration in one or more signaling communications. The one or more signaling communications may include one or more radio resource control (RRC) communications, one or more medium access control (MAC) control element (MAC-CE) communications, one or more downlink control information (DCI) communications, and/or the like.

The first transmit power configuration may be associated with the full-duplex portion of the time-frequency resource and the second transmit power configuration may be associated with the non-full-duplex portion of the time-frequency resource. That is, the wireless communication device may use the first transmit power configuration to transmit, to the BS, a portion of a PUSCH communication (and/or one or more PUSCH communications) in the full-duplex portion, and may use the second transmit power configuration to transmit, to the BS, another portion of the PUSCH (and/or one or more other PUSCH communications) in the non-full-duplex portion.

The transmit power configurations (e.g., the first transmit power configuration and the second transmit power configuration) may indicate one or more transmit power parameters. The wireless communication device may use the one or more transmit power parameters, indicated in the first transmit power configuration, to determine a first transmit power for transmitting the portion of the PUSCH communication (and/or one or more PUSCH communications) in the full-duplex portion, and may use the one or more transmit power parameters, indicated in the second transmit power configuration, to determine a second transmit power for transmitting the other portion of the PUSCH communication (and/or one or more other PUSCH communications) in the non-full-duplex portion. The first transmit power and the second transmit power may be different transmit powers. For example, the BS may configure the first transmit power configuration and the second transmit power configuration such that the first transmit power is a greater transmit power relative to the second transmit power. This may mitigates self-interference that would otherwise occur at the BS due to simultaneous transmission and reception in the full-duplex portion, while increasing transmit performance and efficiency at the wireless communication device in the non-full-duplex portion.

In some aspects, the one or more transmit power parameters may include an open-loop power control parameter and/or a closed-loop transmit power control (TPC) command. For example, the first transmit power configuration may include a first open-loop power control parameter and/or a first closed-loop TPC command, and the second transmit power configuration may include a second open-loop power control parameter and/or a second closed-loop TPC command.

The open-loop control parameter may indicate a target receive power and/or a pathloss multiplier. The target receive power may be a receive power, specified by the BS, at which a PUSCH communication is to be received at the BS. The pathloss multiplier may include a value that compensates for pathloss between the wireless communication device and the BS. In some aspects, the BS may determine the pathloss multiplier based at least in part on a distance between the BS and the wireless communication device, inference experienced between the BS and the wireless communication device, and/or the like.

In some aspects, the first open-loop control parameter may indicate a first target receive power and/or a first pathloss multiplier, and the second open-loop control parameter may indicate a second target receive power and/or a second pathloss multiplier. The BS may configure the first transmit power configuration and the second transmit power configuration such that the first target receive power is greater relative to the second target receive power and/or the first pathloss multiplier is a greater value relative to the second pathloss multiplier.

In some aspects, the BS may limit the difference in receive power between the first target receive power and the second target receive power to reduce and/or prevent interference between wireless communication devices in the full-duplex portion. In this case, the BS may limit the difference in receive power between the first target receive power and the second target receive power based at least in part on a permitted interference power at another wireless communication device (or the other wireless communication device's capability to handle and/or accommodate interference), based at least in part on a distance between the wireless communication device and the other wireless communication device, and/or the like. For example, the BS may limit the difference in receive power between the first target receive power and the second target receive power such that the first transmit power, of the portion of the PUSCH communication in the full-duplex portion, multiplied by the inter- wireless communication device pathloss between the wireless communication device and the other wireless communication device, is not greater than a maximum permitted interference power at the other wireless communication device. In this way, the BS can reduce, minimize, and/or otherwise prevent interference with the other wireless communication device's downlink reception that is caused by the wireless communication device's uplink transmission in the full-duplex portion.

In some aspects, the BS may explicitly indicate, to the wireless communication device, the first target receive power, the second target receive power, the first pathloss multiplier, and/or the second pathloss multiplier. In some aspects, the BS may explicitly indicate the second target receive power and may implicitly indicate the first target receive power (e.g., by indicating a difference or delta between the second target receive power and the first target receive power). In some aspects, the BS may explicitly indicate the second pathloss multiplier and may implicitly indicate the first pathloss multiplier (e.g., by indicating a difference or delta between the value of the second pathloss multiplier and the value of the first pathloss multiplier).

A closed-loop TPC command may indicate, to the wireless communication device, to adjust (e.g., increase or decrease) the current transmit power of the UE. For example, a closed-loop TPC command may indicate a transmit power adjustment in decibels (dB) (e.g., +3dB, -2dB, and/or the like), in a percentage (e.g., +<NUM>%, -<NUM>%, and/or the like), and/or the like. The BS may use the first closed-loop TPC command to fine-tune the transmit power, of the wireless communication device, in the full-duplex portion, and may use the second closed-loop TPC command to fine-tune the transmit power, of the wireless communication device, in the non-full-duplex portion.

In some aspects, the first closed-loop TPC command and the second closed-loop TPC command may share a TPC accumulation for the time-frequency resource or may be associated with separate TPC accumulations. A TPC accumulation may include an accumulation of closed-loop TPC command adjustment values. For example, if the BS transmits, to the wireless communication device, three closed-loop TPC command adjustment values in a time-frequency resource, respectively being +3dB, +3dB, -3dB, the TPC accumulation for the time-frequency resource would be +3dB. If the first closed-loop TPC command and the second closed-loop TPC command may share a TPC accumulation, the wireless communication device may carry over the TPC accumulation from one portion of the time-frequency resource (e.g., the non-full-duplex portion or the full-duplex portion) to another portion of the time-frequency resource. If the first closed-loop TPC command and the second closed-loop TPC command are associated with separate TPC accumulations, the wireless communication device may track a first TPC accumulation for the full-duplex portion of the time-frequency resource and a second TPC accumulation for the non-full-duplex portion, which increases the BS's flexibility in mitigating self-interference at the BS.

In some aspects, the first transmit power configuration and the second transmit power configuration may further respectively indicate respective resource positions for the full-duplex portion and the non-full-duplex portion. For example, the first transmit power configuration may indicate a first resource position of the full-duplex portion, which may indicate the time-domain resources and/or the frequency domain resources, included in the time-frequency resource, occupied by the full-duplex portion. Similarly, the second transmit power configuration may indicate a second resource position of the non-full-duplex portion, which may indicate the time-domain resources and/or the frequency domain resources, included in the time-frequency resource, occupied by the non-full-duplex portion.

In some aspects, the first transmit power configuration and the second transmit power configuration may further respectively indicate transport formats (e.g., modulation coding schemes (MCS), and/or the like) for the full-duplex portion and the non-full-duplex portion. For example, if the BS expects a gain (or difference) between the first target receive power and the second target receive power to mitigate an interference-plus-noise boost associated with full-duplex self-interference at the BS, the BS may specify that the first transport format and the second transport format are the same transport format. As another example, if the BS expects that a gain (or difference) between the first target receive power and the second target receive power might not mitigate an interference-plus-noise boost associated with full-duplex self-interference at the BS, the BS may specify different transport formats for the first transport format and the second transport format. As another example, if the BS expects the first target receive power and the second target receive power to be the same (e.g., the exact same, substantially the same, within a threshold percentage, and/or the like), the BS may specify different transport formats for the first transport format and the second transport format.

As shown in <FIG>, and by reference number <NUM>, the wireless communication device may transmit, to the BS, the first portion of the PUSCH communication in the full-duplex portion of the time-frequency resource based at least in part on the first transmit power configuration and, as shown by reference number <NUM>, the wireless communication device may transmit, to the BS, the second portion of the PUSCH communication in the non-full-duplex portion of the time-frequency resource based at least in part on the second transmit power configuration. In some aspects, the wireless communication device may transmit one or more PUSCH communications in the full-duplex portion based at least in part on the first transmit power configuration, and may transmit one or more other PUSCH communications in the non-full-duplex portion based at least in part on the second transmit power configuration.

In some aspects, the wireless communication device may determine a first transmit power based at least in part on the first transmit power configuration and may determine a second transmit power based at least in part on the second transmit power configuration. The wireless communication device may transmit the first portion of the PUSCH communication in the full-duplex portion using the first transmit power and may transmit the second portion of the PUSCH communication in the non-full-duplex portion using the second transmit power.

In some aspects, the wireless communication device may determine the first transmit power based at least in part on Equation <NUM>: <MAT> where PPUSCH is the first transmit power, PCMAX is maximum transmit power of the wireless communication device, PO_PUSCH is the first target receive power indicated in the first open-loop control parameter of the first transmit power configuration, α is the first pathloss multiplier indicated in the first open-loop control parameter of the first transmit power configuration, f is the TPC accumulation indicated in the first closed-loop TPC command of the first transmit power configuration, and <MAT> is the quantity of physical resource blocks (PRBs) included in the PUSCH communication during the full-duplex portion. The wireless communication device may similarly determine the second transmit power, according to Equation <NUM>, using the second target receive power indicated in the second open-loop control parameter of the second transmit power configuration, the second pathloss multiplier indicated in the second open-loop control parameter of the second transmit power configuration, the TPC accumulation indicated in the second closed-loop TPC command, and the quantity of PRBs included in the PUSCH communication during the non-full-duplex portion.

In some aspects, the wireless communication device may determine the first transmit power and the second transmit power based at least in part on whether the full-duplex portion and the non-full-duplex portion are time division multiplexed (TDM) in the time-frequency resource, frequency division multiplexed (FDM) in the time-frequency resource, or TDM and FDM in the time-frequency resource. <FIG> illustrates respective examples of the full-duplex portion and the non-full-duplex portion being TDM in the time-frequency resource, the full-duplex portion and the non-full-duplex portion being FDM in the time-frequency resource, and the full-duplex portion and the non-full-duplex portion being TDM and FDM in the time-frequency resource.

As shown in the TDM example in <FIG>, a first portion of the PUSCH communication transmission may occupy the same time-domain resources (e.g., symbols, slots, and/or the like) and frequency-domain resources (e.g., resource elements, resource blocks, and/or the like) as the BS's PDSCH communication transmission in the full-duplex portion, and a second portion of the PUSCH communication transmission may occupy the non-full-duplex portion. The time-domain resources of the time-frequency resource may be divided among the full-duplex portion and the non-full-duplex portion. In this case, the wireless communication device may determine the first transmit power, according to Equation <NUM>, for the entire bandwidth of the PUSCH communication in the full-duplex portion (e.g., for all of the PRBs of the PUSCH communication in the full-duplex portion). Moreover, the wireless communication device may determine the second transmit power, according to Equation <NUM>, for the entire bandwidth of the PUSCH communication in the non-full-duplex portion (e.g., for all of the PRBs of the PUSCH communication in the non-full-duplex portion).

As shown in the FDM example in <FIG>, a first portion of the PUSCH communication transmission may occupy the same time-domain resources (e.g., symbols, slots, and/or the like) and frequency-domain resources (e.g., resource elements, resource blocks, and/or the like) as the BS's PDSCH communication transmission in the full-duplex portion, and a second portion of the PUSCH communication transmission may occupy the non-full-duplex portion. The frequency-domain resources of the time-frequency resource may be divided among the full-duplex portion and the non-full-duplex portion. In this case, the wireless communication device may determine the first transmit power, according to Equation <NUM>, for one or more first PRBs in which the PUSCH communication is to be transmitted in the full-duplex portion, and may determine the second transmit power, according to Equation <NUM>, for one or more second PRBs in which the PUSCH communication is to be transmitted in the non-full-duplex portion. The wireless communication device may determine whether a sum of the first transmit power and the second transmit power satisfies a transmit power threshold for the wireless communication device. The transmit power threshold may be the maximum transmit power of the wireless communication device. If the sum of the first transmit power and the second transmit power in the time-frequency resource satisfies the transmit power threshold (e.g., the sum does not exceed the maximum transmit power of the wireless communication device), the wireless communication device may transmit the first portion of the PUSCH communication using the first transmit power, and may transmit the second portion of the PUSCH communication using the second transmit power.

If the sum of the first transmit power and the second transmit power in the time-frequency resource does not satisfy the transmit power threshold (e.g., the sum exceeds the maximum transmit power of the wireless communication device), the wireless communication device may perform one or more techniques to reduce the sum of the first transmit power and the second transmit power until the sum satisfies the transmit power threshold (e.g., until the sum does not exceed the maximum transmit power of the wireless communication device). For example, the wireless communication device may decrease the first transmit power and the second transmit power, based at least in part on a common decreasing ratio, until the sum of the first transmit power and the second transmit power satisfies the transmit power threshold. In this case, the first transmit power and the second transmit power are equally reduced according to the ratio, which may be specified in the one or more signaling communications, hard-coded at the wireless communication device, calculated by the wireless communication device, and/or the like. The wireless communication device may then transmit the first portion of the PUSCH communication using the decreased first transmit power, and may transmit the second portion of the PUSCH communication using the decreased second transmit power.

As another example, the wireless communication device may decrease the first transmit power until the sum of the first transmit power and the second transmit power satisfies the transmit power threshold or until the first transmit power reaches a threshold or zero. If the sum of the first transmit power and the second transmit power satisfies the transmit power threshold after decreasing the first transmit power, the wireless communication device may transmit the first portion of the PUSCH communication using the decreased first transmit power, and may transmit the second portion of the PUSCH communication using the second transmit power. If the sum of the first transmit power and the second transmit power still does not satisfy the transmit power threshold after decreasing the first transmit power to the threshold or zero, the wireless communication device may decrease the second transmit power until the sum of the first transmit power and the second transmit power satisfies the transmit power threshold.

As shown in the TDM and FDM example in <FIG>, a first portion of the PUSCH communication transmission may occupy the same time-domain resources (e.g., symbols, slots, and/or the like) and frequency-domain resources (e.g., resource elements, resource blocks, and/or the like) as the BS's PDSCH communication transmission in the full-duplex portion, and a second portion of the PUSCH communication transmission may occupy the non-full-duplex portion. At least a portion of the time-domain resources and/or at least a portion of the frequency-domain resources of the full-duplex portion may overlap with at least a portion of the time-domain resources and/or at least a portion of the frequency-domain resources of the non-full-duplex portion. In this case, the UE may determine the first transmit power and the second transmit power in the overlapped time-domain resource using similar techniques as described above in connection with the FDM example, and determine the second transmit power in the non-overlapped time-domain resource using similar techniques as described above in connection with the TDM example.

As shown in <FIG>, and by reference number <NUM>, the wireless communication device may transmit (e.g., concurrently with the PUSCH communication(s), after the transmission of the PUSCH communication(s), and/or the like) a power headroom report to the BS. In some aspects, the wireless communication device may transmit the power headroom report in a communication such as an uplink control information (UCI) communication, a MAC-CE communication, and/or the like.

The power headroom report may include one or more power headroom values that indicate an amount of headroom (or margin) between the first transmit power and the second transmit power, that were used to transmit the PUSCH communication(s) in the time-frequency resource, and a maximum transmit power of the wireless communication device. The BS may receive the power headroom report and may adjust the first transmit power configuration and/or the second transmit power configuration based at least in part on the one or more power headroom values indicated in the power headroom report. For example, the BS may adjust, based at least in part on the one or more power headroom values, the first target receive power, the second target receive power, the first pathloss multiplier, the second pathloss multiplier, the one or more TPC accumulations, and/or the like.

In some aspects, the one or more power headroom values may include a first power headroom value that is based at least in part on the first transmit power configuration (e.g., based at least in part on the first target receive power, the first pathloss multiplier, the TPC accumulation associated with the full-duplex portion, and/or the like), a second power headroom value that is based at least in part on the second transmit power configuration (e.g., based at least in part on the second target receive power, the second pathloss multiplier, the TPC accumulation associated with the non-full-duplex portion, and/or the like), a third power headroom value that is based at least in part on the first transmit power configuration and the second transmit power configuration (e.g., based at least in part on the first target receive power, the first pathloss multiplier, the TPC accumulation associated with the full-duplex portion, the second target receive power, the second pathloss multiplier, the TPC accumulation associated with the non-full-duplex portion, and/or the like), and/or the like.

In some aspects, the wireless communication device may determine the first headroom value based at least in part on determining a total transmit power in the full-duplex portion (e.g., by multiplying the first target receive power per PRB by the quantity of PRBs in the full-duplex portion of the PUSCH communication) and subtracting the total transmit power from the maximum transmit power of the wireless communication device. In some aspects, the wireless communication device may determine the second headroom value based at least in part on determining a total transmit power in the non-full-duplex portion (e.g., by multiplying the second target receive power per PRB by the quantity of PRBs in the non-full-duplex portion of the PUSCH communication) and subtracting the total transmit power from the maximum transmit power of the wireless communication device. In some aspects, the wireless communication device may determine the first power headroom value and the second power headroom value according to Equation <NUM>: <MAT> where PH is the power headroom value, PCMAX is the maximum transmit power of the wireless communication device, <MAT> is the quantity of PRBs included in the full-duplex portion (e.g., for the first power headroom value) or non-full-duplex portion (e.g., for the second power headroom value), P<NUM> is the first target receive power (e.g., for the first power headroom value) or the second target receive power (e.g., for the second power headroom value), α is the first pathloss multiplier (e.g., for the first power headroom value) or the second pathloss multiplier (e.g., for the second power headroom value), and f is the TPC accumulation (e.g., for the first power headroom value or the second power headroom value). In some aspects, the wireless communication device may determine the first power headroom value and the second power headroom value according to Equation <NUM> when the full-duplex portion and the non-full-duplex portion are TDM in the time-frequency resource.

In some aspects, the wireless communication device may determine the third headroom value based at least in part on determining a total transmit power in the full-duplex portion and non-full-duplex portion (e.g., by multiplying the first target receive power per PRB by the quantity of PRBs in the full-duplex portion of the PUSCH communication, and by adding the resulting product by the product of multiplying the second target receive power per PRB by the quantity of PRBs in the non-full-duplex portion of the PUSCH communication) and subtracting the total transmit power from the maximum transmit power of the wireless communication device. In some aspects, the wireless communication device may determine the third power headroom value according to Equation <NUM>: <MAT> where PH is the power headroom value, PCMAX is the maximum transmit power of the wireless communication device, M(<NUM>) and M(<NUM>) are respectively the quantity of PRBs included in the full-duplex portion and non-full-duplex portion, and <MAT> and <MAT> are respectively the first target receive power and the second target receive power. In some aspects, the wireless communication device may determine the first power headroom value and the second power headroom value according to Equation <NUM> when the full-duplex portion and the non-full-duplex portion are FDM or TDM and FDM in the time-frequency resource.

In this way, the BS may transmit, to the wireless communication device, an indication of a first transmit power configuration and a second transmit power configuration for a PUSCH communication. The wireless communication device may receive the indication of the first transmit power configuration and the second transmit power configuration, and may transmit, using a first transmit power that is based at least in part on the first transmit power configuration, a first portion of the PUSCH communication in a full-duplex portion of a time-frequency resource, and transmit, using a second transmit power that is based at least in part on the second transmit power configuration, a second portion of the PUSCH communication in a non-full-duplex portion of the time-frequency resource. Utilizing different transmit powers mitigates self-interference that might occur at the BS, thereby improving use and/or performance of full-duplex communications. This facilitates use of full-duplex and non-full-duplex in a time-frequency resource, without degrading a performance of communications, without decreasing an efficiency of the communications, and/or the like. Further, some techniques and apparatuses described herein reduce or eliminate a need to suspend on-going uplink communications for new downlink traffic by providing a way to perform the downlink transfer at any time during the on-going uplink transfer, or vice versa. Further, some techniques and apparatuses described herein maximize utilization of channel capacity (e.g., for eMBB services) while facilitating low latency (e.g., for URLLC services).

For example, <FIG> illustrate one or more examples where a full-duplex portion of a time-frequency resource includes a PUSCH communication transmission and a PDSCH communication transmission, such as where a BS and a UE communicate in the time-frequency resource. However, the techniques and aspects described above in connection with <FIG> may be practiced in other scenarios, such as where a BS and another BS communicate in the time-frequency resource. For example, the BS (e.g., an IAB node) may receive a backhaul downlink communication from the other BS (e.g., an IAB donor) and may transmit an access downlink communication to a UE in the full-duplex portion. As another example, the BS (e.g., an IAB node) may transmit a backhaul uplink communication from the other BS (e.g., an IAB donor) and may receive an access uplink communication to a UE in the full-duplex portion.

<FIG> are diagrams illustrating one or more examples <NUM> related to PUSCH transmit power configuration in a slot with full-duplex, in accordance with various aspects of the present disclosure. For example, <FIG> show various example deployment scenarios in which some aspects described herein may be implemented.

<FIG> shows a first example deployment scenario in which some aspects described herein may be implemented. In this first example scenario, uplink (UL) and downlink (DL) communications between a BS (e.g., BS <NUM>) and multiple UEs (e.g., UEs <NUM>) may be full-duplex communications. For example, and as shown by reference number <NUM>, a UE1 may transmit UL (eMBB) communications to the BS. As shown by reference number <NUM>, the BS may transmit DL (URLLC) communications to a UE2 on a same carrier on which the BS is receiving the UL communications. Some aspects described herein mitigates self-interference that would otherwise occur at the BS due to the simultaneous reception and transmission described above.

<FIG> shows a second example deployment scenario in which some aspects described herein may be implemented. In this second example scenario, an IAB node (e.g., a first BS <NUM>) communicates simultaneously with an IAB donor (e.g., a second BS <NUM>) and a UE. As shown by reference number <NUM>, the IAB node may receive backhaul DL (high load) communications from the IAB donor. As shown by reference number <NUM>, the IAB node may transmit access DL (low load) communications to the UE on a same carrier as the backhaul DL communications. Some aspects described herein mitigates self-interference that would otherwise occur at the IAB node due to the simultaneous reception and transmission described above.

<FIG> shows a third example deployment scenario in which some aspects described herein may be implemented. In this third example scenario, an IAB node (e.g., a first BS <NUM>) communicates simultaneously with an IAB donor (e.g., a second BS <NUM>) and a UE. As shown by reference number <NUM>, the IAB node may transmit backhaul UL (low load) communications to the IAB donor. As shown by reference number <NUM>, the IAB node may receive access UL (high load) communications from the UE on a same carrier as the backhaul uplink communications. Some aspects described herein mitigates self-interference that would otherwise occur at the IAB node due to the simultaneous reception and transmission described above.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a wireless communication device, in accordance with various aspects of the present disclosure. Example process <NUM> is an example where a wireless communication device (e.g., BS <NUM>, UE <NUM>, and/or the like) performs operations associated with PUSCH transmit power configuration.

As shown in <FIG>, in some aspects, process <NUM> may include receiving an indication of a first transmit power configuration and a second transmit power configuration for a PUSCH communication (block <NUM>). For example, the wireless communication device (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive an indication of a first transmit power configuration and a second transmit power configuration for a PUSCH communication, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include transmitting, using a first transmit power that is based at least in part on the first transmit power configuration, a first portion of the PUSCH communication in a full-duplex portion of a time-frequency resource (block <NUM>). For example, the wireless communication device (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit, using a first transmit power that is based at least in part on the first transmit power configuration, a first portion of the PUSCH communication in a full-duplex portion of a time-frequency resource, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include transmitting, using a second transmit power that is based at least in part on the second transmit power configuration, a second portion of the PUSCH communication in a non-full-duplex portion of the time-frequency resource (block <NUM>). For example, the wireless communication device (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit, using a second transmit power that is based at least in part on the second transmit power configuration, a second portion of the PUSCH communication in a non-full-duplex portion of the time-frequency resource, as described above.

Process <NUM> may include additional aspects, such as any single implementation or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In a first aspect, the first transmit power configuration indicates a first open-loop power control parameter and a first closed-loop TPC command and the second transmit power configuration indicates a second open-loop power control parameter and a second closed-loop TPC command. In a second aspect, alone or in combination with the first aspect, the first open-loop power control parameter comprises at least one of a first target receive power or a first pathloss multiplier, and the second open-loop power control parameter comprises at least one of a second target receive power or a second pathloss multiplier.

In a third aspect, alone or in combination with one or more of the first and second aspects, the first target receive power is greater relative to the second target receive power and/or the first pathloss multiplier is greater relative to the second pathloss multiplier. In a fourth aspect, alone or in combination with one or more of the first through third aspects, the first target receive power and the second target receive power are explicitly indicated. In a fifth aspect, alone or in combination with one or more of the first through third aspects, the second target receive power is explicitly indicated. In some aspects, the first target receive power is implicitly indicated relative to the second target receive power.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, a difference between the first target receive power and the second target receive power is based at least in part on a permitted interference power at another wireless communication device associated with the full-duplex portion. In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, a difference between the first target receive power and the second target receive power is based at least in part on a distance between the wireless communication device and another wireless communication device.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the first closed-loop TPC command and the second closed-loop TPC command share a TPC accumulation for the time-frequency resource. In a ninth aspect, alone or in combination with one or more of the first through seventh aspects, the first closed-loop TPC command is associated with a TPC accumulation for the full-duplex portion of the time-frequency resource. In some aspects, the second closed-loop TPC command is associated with a TPC accumulation for the non-full-duplex portion of the time-frequency resource.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the first transmit power configuration indicates a first resource position and a first transport format for the full-duplex portion, and the second transmit power configuration indicates a second resource position and a second transport format for the non-full-duplex portion. In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the first transport format and the second transport format are a same transport format if a gain of a first target receive power of the first portion of the PUSCH communication, relative to a second target receive power of the second portion of the PUSCH communication, is expected to mitigate an interference-plus-noise power boost associated with full-duplex self-interference at a BS that is to receive the PUSCH communication.

In a twelfth aspect, alone or in combination with one or more of the first through tenth aspects, the first transport format and the second transport format are different transport formats if a gain of a first target receive power of the first portion of the PUSCH communication, relative to a second target receive power of the second portion of the PUSCH communication, is expected to not mitigate an interference-plus-noise power boost associated with full-duplex self-interference at a BS that is to receive the PUSCH communication. In a thirteenth aspect, alone or in combination with one or more of the first through tenth aspects, the first transport format and the second transport format are different transport formats if a first target receive power of the first portion of the PUSCH communication, and a second target receive power of the second portion of the PUSCH communication, are expected to be a same receive power.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, process <NUM> further comprises transmitting a power headroom report that indicates at least one of a first power headroom value that is based at least in part on the first transmit power configuration, a second power headroom value that is based at least in part on the second transmit power configuration, or a third power headroom value that is based at least in part on the first transmit power configuration and the second transmit power configuration. In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the full-duplex portion is time division multiplexed with the non-full-duplex portion in the time-frequency resource.

In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, process <NUM> further comprises determining the first transmit power, based at least in part on the first transmit power configuration, for an entire bandwidth of the PUSCH communication during the full-duplex portion, and determining the second transmit power, based at least in part on the second transmit power configuration, for the entire bandwidth of the PUSCH communication during the non-full-duplex portion.

In a seventeenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the full-duplex portion is frequency division multiplexed with the non-full-duplex portion in the time-frequency resource. In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, process <NUM> further comprises determining the first transmit power for one or more first resource blocks in which the PUSCH communication is to be transmitted in the full-duplex portion, determining the second transmit power for one or more second resource blocks in which the PUSCH communication is to be transmitted in the non-full-duplex portion, determining that a sum of the first transmit power and the second transmit power does not satisfy a transmit power threshold, and decreasing the first transmit power and the second transmit power, based at least in part on a common decreasing ratio, until the sum of the first transmit power and the second transmit power satisfies the transmit power threshold.

In a nineteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, process <NUM> further comprises determining the first transmit power for one or more first resource blocks in which the PUSCH communication is to be transmitted in the full-duplex portion, determining the second transmit power for one or more second resource blocks in which the PUSCH communication is to be transmitted in the non-full-duplex portion, determining that a sum of the first transmit power and the second transmit power does not satisfy a transmit power threshold, decreasing the first transmit power until the sum of the first transmit power and the second transmit power satisfies the transmit power threshold or the first transmit power is zero, and decreasing, if the sum of the first transmit power and the second transmit power does not satisfy the transmit power threshold after decreasing the first transmit power to zero, the second transmit power until the sum of the first transmit power and the second transmit power satisfies the transmit power threshold.

In a twentieth aspect, alone or in combination with one or more of the first through nineteenth aspects, the full-duplex portion is time division multiplexed and frequency division multiplexed with the non-full-duplex portion in the time-frequency resource. In a twenty-first aspect, alone or in combination with one or more of the first through twentieth aspects, receiving the indication of the first transmit power configuration and the second transmit power configuration comprises receiving the indication of the first transmit power configuration and the second transmit power configuration in one or more signaling communications. In a twenty-second aspect, alone or in combination with one or more of the first through twenty-first aspects, the one or more signaling communications comprise an RRC communication, a MAC-CE communication, or a DCI communication.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a BS, in accordance with various aspects of the present disclosure. Example process <NUM> is an example where a BS (e.g., BS <NUM>) performs operations associated with PUSCH transmit power configuration.

As shown in <FIG>, in some aspects, process <NUM> may include transmitting an indication of a first transmit power configuration and a second transmit power configuration for a PUSCH communication (block <NUM>). For example, the BS (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit an indication of a first transmit power configuration and a second transmit power configuration for a PUSCH communication, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include receiving a first portion of the PUSCH communication that is transmitted in a full-duplex portion of a time-frequency resource and at a first transmit power that is based at least in part on the first transmit power configuration (block <NUM>). For example, the BS (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive a first portion of the PUSCH communication that is transmitted in a full-duplex portion of a time-frequency resource and at a first transmit power that is based at least in part on the first transmit power configuration, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include receiving a second portion of the PUSCH communication that is transmitted in a non-full-duplex portion of the time-frequency resource and at a second transmit power that is based at least in part on the second transmit power configuration (block <NUM>). For example, the BS (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive a second portion of the PUSCH communication that is transmitted in a non-full-duplex portion of the time-frequency resource and at a second transmit power that is based at least in part on the second transmit power configuration, as described above.

In a first aspect, the first transmit power configuration indicates a first open-loop power control parameter and a first closed-loop TPC command, and the second transmit power configuration indicates a second open-loop power control parameter and a second closed-loop TPC command. In a second aspect, alone or in combination with the first aspect, the first open-loop power control parameter comprises at least one of a first target receive power or a first pathloss multiplier, and the second open-loop power control parameter comprises at least one of a second target receive power or a second pathloss multiplier. In a third aspect, alone or in combination with one or more of the first and second aspects, the first target receive power is greater relative to the second target receive power, and/or the first pathloss multiplier is greater relative to the second pathloss multiplier.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, the first target receive power and the second target receive power are explicitly indicated. In a fifth aspect, alone or in combination with one or more of the first through third aspects, the second target receive power is explicitly indicated. In some aspects, the first target receive power is implicitly indicated relative to the second target receive power. In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, a difference between the first target receive power and the second target receive power is based at least in part on a permitted interference power at another wireless communication device associated with the full-duplex portion.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, a difference between the first target receive power and the second target receive power is based at least in part on a distance between a first wireless communication device and a second wireless communication device. In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the first closed-loop TPC command and the second closed-loop TPC command share a TPC accumulation for the time-frequency resource. In a ninth aspect, alone or in combination with one or more of the first through seventh aspects, the first closed-loop TPC command is associated with a TPC accumulation for the full-duplex portion of the time-frequency resource, and the second closed-loop TPC command is associated with a TPC accumulation for the non-full-duplex portion of the time-frequency resource.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the first transmit power configuration indicates a first resource position and a first transport format for the full-duplex portion, and the second transmit power configuration indicates a second resource position and a second transport format for the non-full-duplex portion. In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the first transport format and the second transport format are a same transport format if a gain of a first target receive power of the first portion of the PUSCH communication, relative to a second target receive power of the second portion of the PUSCH communication, is expected to mitigate an interference-plus-noise power boost associated with full-duplex self-interference at the BS.

In a twelfth aspect, alone or in combination with one or more of the first through tenth aspects, the first transport format and the second transport format are different transport formats if a gain of a first target receive power of the first portion of the PUSCH communication, relative to a second target receive power of the second portion of the PUSCH communication, is expected to not mitigate an interference-plus-noise power boost associated with full-duplex self-interference at the BS. In a thirteenth aspect, alone or in combination with one or more of the first through tenth aspects, the first transport format and the second transport format are different transport formats if a first target receive power of the first portion of the PUSCH communication, and a second target receive power of the second portion of the PUSCH communication, is expected to be a same receive power.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, process <NUM> further comprises receiving a power headroom report that indicates at least one of a power headroom value that is based at least in part on the first transmit power configuration, a second power headroom value that is based at least in part on the second transmit power configuration, or a third power headroom value that is based at least in part on the first transmit power configuration and the second transmit power configuration.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the full-duplex portion is time division multiplexed with the non-full-duplex portion in the time-frequency resource. In a sixteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the full-duplex portion is frequency division multiplexed with the non-full-duplex portion in the time-frequency resource. In a seventeenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the full-duplex portion is time division multiplexed and frequency division multiplexed with the non-full-duplex portion in the time-frequency resource.

In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, transmitting the indication of the first transmit power configuration and the second transmit power configuration comprises transmitting the indication of the first transmit power configuration and the second transmit power configuration in one or more signaling communications. In a nineteenth aspect, alone or in combination with one or more of the first through eighteenth aspects, the one or more signaling communications comprise an RRC communication, a MAC-CE communication, or a DCI communication.

Claim 1:
A method (<NUM>) of wireless communication performed by a wireless communication device, the method (<NUM>) comprising:
receiving (<NUM>) an indication of a first transmit power configuration and a second transmit power configuration for a physical uplink shared channel, PUSCH, communication;
transmitting (<NUM>), using a first transmit power that is based at least in part on the first transmit power configuration, a first portion of the PUSCH communication in a full-duplex portion of a time-frequency resource, wherein the first portion of the PUSCH communication occupies the same time-frequency resource as a PDSCH communication from a base station; and
transmitting (<NUM>), using a second transmit power that is based at least in part on the second transmit power configuration, a second portion of the PUSCH communication in a non-full-duplex portion of the time-frequency resource, wherein the first transmit power is a greater transmit power relative to the second transmit power.