Patent Description:
<NPL>) discusses implementation difficulties and complexities, due to the support of multiple numerologies and bandwidth by UE, and also provided corresponding proposals.

Advantageous, optional features of the invention are then set out in the appended dependent claims.

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 receiver automatic gain control, 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>, 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.

In some aspects, UE <NUM> may include means for determining an automatic gain control parameter, for a group of downlink symbols associated with a base station, based at least in part on an automatic gain control resource included in the group of downlink symbols, means for performing, based at least in part on the automatic gain control parameter, automatic gain control for one or more data symbols included in the group of downlink symbols, and/or the like. In some aspects, UE <NUM> may include means for receiving a first communication that indicates a plurality of automatic gain control parameters, means for receiving a second communication that indicates an automatic gain control parameter, of the plurality of automatic gain control parameters, for a group of downlink symbols, means for performing, based at least in part on the automatic gain control parameter, automatic gain control for one or more data symbols included in the group of downlink symbols, and/or the like. In some aspects, such means may include one or more components of UE <NUM> described in connection with <FIG>.

In some aspects, base station <NUM> may include means for determining an automatic gain control parameter, for a group of uplink symbols associated with a user equipment, based at least in part on an automatic gain control resource included in the group of uplink symbols, means for performing, based at least in part on the automatic gain control parameter, automatic gain control for one or more data symbols included in the group of uplink symbols, and/or the like. In some aspects, base station <NUM> may include means for transmitting, to a user equipment, a first communication that indicates a plurality of automatic gain control parameters, means for transmitting, to the user equipment, a second communication that indicates an automatic gain control parameter, of the plurality of automatic gain control parameters, for a group of downlink symbols associated with the base station, and/or the like. In some aspects, such means may include one or more components of base station <NUM> described in connection with <FIG>.

An interlace structure may be used for each of the downlink and uplink for FDD in certain telecommunications systems (e.g., NR). For example, Q interlaces with indices of <NUM> through Q - <NUM> may be defined, where Q may be equal to <NUM>, <NUM>, <NUM>, <NUM>, or some other value. Each interlace may include slots that are spaced apart by Q frames. In particular, interlace q may include slots q, q + Q, q + 2Q, etc., where q ∈ {<NUM>,. , Q - <NUM>}.

In aspects, NR may utilize OFDM with a CP (herein referred to as cyclic prefix OFDM or CP-OFDM) and/or SC-FDM on the uplink, may utilize CP-OFDM on the downlink and include support for half-duplex operation using time division duplexing (TDD).

In a wireless network, a UE and a BS may communicate using various communication modes. For example, the UE and the BS may communicate using a full-duplex modes, such as where the UE and the BS simultaneously communicate on a downlink and an uplink, where the UE simultaneously communicates with the BS and another BS, where the BS simultaneously communicates with the UE and another UE, and/or the like. As another example, the UE and the BS may communicate using a non-full-duplex modes, such as where the UE and the BS perform half-duplex communication and/or another type of non-full-duplex communication.

When a receiver (e.g., the UE or the BS) receives a communication from a transmitter (e.g., the UE or the BS), the receiver may perform automatic gain control (AGC) for the reception of the communication. For example, the receiver may regulate a received signal strength of the communication by performing outer loop AGC on the transmission of the communication after a radio frequency (RF) chain of the receiver and prior to the transmission of the communication being provided to an analog-to-digital converter for analog-to-digital conversion. The outer loop AGC may include a closed feedback loop that measures a signal strength of the transmission of the communication after analog-to-digital conversion, and modifies the RF gain parameter based at least in part on the measurement. If the signal strength of the transmission of the communication is weak, the outer loop AGC may modify the RF gain parameter to boost one or more receiver gain stages in the RF chain to reduce noise and improve the signal-to-noise ratio (SNR) of the transmission of the communication. If the signal strength of the transmission of the communication is strong, the outer loop AGC may modify the RF gain parameter to attenuate the one or more receiver gain stages in the RF chain to reduce signal clipping and/or nonlinear degradations of the transmission of the communication.

In some cases, the receiver may experience large and/or fast variations in receive signal strength when the transmitter switches between full-duplex communication and non-full-duplex communication. For example, if the UE is the receiver, the UE may experience a large and/or fast decrease in received signal strength from the BS, when the BS switches from non-full-duplex mode to full-duplex mode, since the BS may reduce downlink transmit power in order to reduce self-interference at the BS (e.g., interference with receiving uplink transmissions at the BS due to the BS simultaneously transmitting downlink communications). As another example, the UE may experience a large and/or fast increase in received signal strength from the BS as the BS switches from full-duplex mode to non-full-duplex mode and accordingly increases downlink transmit power.

If the receiver is the BS, the self-interference at the BS, when the BS switches from non-full-duplex mode to full-duplex mode, may cause a large and/or fast increase in uplink receive signal strength at the BS (e.g., due to the BS decreasing downlink transmit power during full-duplex mode). When the BS switches from full-duplex mode to non-full-duplex mode, the BS may experience a large and/or fast decrease in receive signal strength as the BS increases downlink transmit power in the non-full-duplex mode.

In some cases, the receiver may reduce the effects of variations in receive signal strength by using configured receive AGC states. For example, if the receiver knows or expects an increase or decrease in receive signal strength (such as known or expected transitions between different types of downlink channels or uplink channels), the receiver may use the configured receive AGC states to perform outer loop AGC to adjust RF gain to the increase or decrease in receive signal strength. However, since transitions between full-duplex mode and non-full-duplex mode may not be known to the receiver, and/or may not be predictable, the use of configured receive AGC states may be impractical for transitions between full-duplex mode and non-full-duplex mode. This may cause a decrease in SNR, an increase in clipping, and/or an increase in nonlinear degradations for communications that are received at the receiver.

Some aspects described herein provide techniques and apparatuses for receive automatic gain control. In some aspects, a transmitter (e.g., a UE or a BS) may be configured to transmit a group of symbols that includes an AGC resource and one or more data symbols. The group of symbols may include full-duplex symbols or non-full-duplex symbols. A receiver (e.g., a UE or a BS) may receive the group of symbols, may determine an AGC parameter (e.g., an RF gain parameter and/or another type of AGC parameter) based at least in part on the AGC resource, and may perform, based at least in part on the AGC parameter, AGC for the one or more data symbols. In some aspects, a transmitter may transmit a first communication that indicates a plurality of AGC parameters. The transmitter may transmit a second communication that indicates an AGC parameter, of the plurality of AGC parameters, for a group of symbols. A receiver may receive the first communication and the second communication, and may perform, based at least in part on the AGC parameter indicated in the second communication, AGC for one or more data symbols included in the group of symbols.

In this way, the receiver is capable of using the AGC parameter to perform outer loop AGC for transitions between full-duplex mode and non-full-duplex mode, which increases SNR, decreases clipping, and/or decreases nonlinear degradations for communications that are received at the receiver.

<FIG> are diagrams illustrating an example <NUM> of receiver automatic gain control, in accordance with various aspects of the present disclosure. As shown in <FIG>, example <NUM> may include a user equipment (e.g., UE <NUM>) and a base station (e.g., BS <NUM>). In some aspects, UE <NUM> and BS <NUM> may be communicatively connected and may communicate via a wireless communication link. The wireless communication link may include a downlink and an uplink. In some aspects, UE <NUM> and BS <NUM> may communicate using various communication modes, such as a full duplex mode, a non-full-duplex mode, and/or the like.

As shown in <FIG>, and by reference number <NUM>, BS <NUM> may communicate with UE <NUM> by transmitting a group of downlink symbols to UE <NUM>. The group of downlink symbols may be included in a full-duplex resource or a non-full-duplex resource associated with BS <NUM>. The group of downlink symbols may include an AGC resource and one or more data symbols. The AGC resource may include a reference signal (e.g., an AGC reference signal (AGC-RS) and/or another type of reference signal), a repetitive data transmission of data that is transmitted in the one or more data symbols, and/or the like.

In some aspects, BS <NUM> may indicate a configuration of the AGC resource to UE <NUM>. The configuration of the AGC resource may be indicated in a signaling communication, such as a radio resource control (RRC) communication, a medium access control (MAC) control element (MAC-CE) communication, a downlink control information (DCI) communication, and/or the like. In some aspects, the configuration of the AGC resource may indicate whether a particular group of downlink symbols includes an AGC resource and/or one or more parameters for the AGC resource in the group of downlink symbols.

In some aspects, BS <NUM> may include the AGC resource in each group of downlink symbols transmitted from BS <NUM>. In some aspects, BS <NUM> may include the AGC resource based at least in part on a transition between transition modes (e.g., a transition from a full-duplex mode to a non-full-duplex mode, a transition from a non-full-duplex mode to a full-duplex mode, and/or the like). In this case, BS <NUM> may include an AGC resource in a full-duplex resource that follows a non-full-duplex resource, may include an AGC resource in a non-full-duplex resource that follows a full-duplex resource, and/or the like. In some aspects, BS <NUM> may include an AGC resource, in a group of downlink symbols, based at least in part on receiving, from UE <NUM>, an indication of received power saturation at UE <NUM>. The indication of the received power saturation may include a saturation index and/or another type of indication of received power saturation. UE <NUM> may transmit the indication of the received power saturation on a physical uplink control channel (PUCCH), on a physical uplink shared channel (PUSCH), and/or the like.

The one or more parameters for the AGC resource may include a subcarrier spacing of the AGC resource (e.g., the subcarrier spacing of the AGC resource may be the same or different from the subcarrier spacing of the one or more data symbols), a transmit power of the AGC resource (e.g., the transmit power of the AGC resource may be the same or different from the transmit power of the one or more data symbols), a location of the AGC resource in the group of downlink symbols (e.g., an indication of the symbols that include the AGC resource), a length of the AGC resource (e.g., a quantity of symbols included in the AGC resource), a type of the AGC resource (e.g., whether the AGC resource includes an AGC-RS or a repetitive data transmission), a quasi-co-location (QCL) of the AGC resource (e.g., an indication of whether the AGC resource is QCL'ed with the one or more data symbols), and/or the like.

<FIG> illustrates various examples of AGC resource configurations where the AGC resource includes an AGC-RS. Other examples of AGC resource configurations for an AGC-RS may be used.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a full AGC symbol in which the AGC-RS is transmitted. The full AGC symbol may be located at the beginning of the group of downlink symbols (e.g., may be the first symbol in the group of downlink symbols), such that UE <NUM> may use the AGC-RS to perform AGC for the data symbols included in the group of downlink symbols, or another location in the group of downlink symbols.

As shown in Example <NUM> illustrated in <FIG>, the AGC-RS may be transmitted in less than a full AGC symbol in the group of downlink symbols. For example, the AGC-RS may be transmitted in a half AGC symbol, a quarter AGC symbol, and/or other symbol portions. The less than a full AGC symbol may be located at the beginning of the group of downlink symbols or another location in the group of downlink symbols.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a plurality of full AGC symbols in which the AGC-RS is transmitted. The plurality of full AGC symbols may be located at the beginning of the group of downlink symbols (e.g., may be the first symbols in the group of downlink symbols) or another location in the group of downlink symbols. The plurality of full AGC symbols may be continuous symbols or non-contiguous symbols. Other examples of AGC resource configurations include a plurality of less than full AGC symbols in the group of downlink symbols, a combination of full AGC symbols and less than full AGC symbols in the group of downlink symbols, and/or the like.

<FIG> illustrates various examples of AGC resource configurations where the AGC resource includes a repetitive data transmission of data that is transmitted in the one or more data symbols included in the group of downlink symbols. Other examples of AGC resource configurations for a repetitive data transmission may be used.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a full AGC symbol in which repetitive data for a full data symbol is transmitted. The full AGC symbol may be located at the beginning of the group of downlink symbols (e.g., may be the first symbol in the group of downlink symbols) such that UE <NUM> may use the repetitive data transmission to perform AGC for the data symbols included in the group of downlink symbols. The full AGC symbol may be adjacent to the data symbol associated with the repetitive data transmission. That is, the data that is to be transmitted in the full AGC symbol may be a repetition of the data that is to be transmitted in the data symbol adjacent to the full AGC symbol. For example, a repetition of the data from data symbol <NUM> may be transmitted in the full AGC symbol. In other examples, the data that is to be transmitted in the full AGC symbol may be a repetition of data that is to be transmitted in a data symbol that is not adjacent to the full AGC symbol.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a less than full AGC symbol (e.g., a half AGC symbol, a quarter AGC symbol, and/or the like) in which repetitive data for a full data symbol is transmitted. The less than full AGC symbol may be located at the beginning of the group of downlink symbols (e.g., may be the first half-symbol in the group of downlink symbols). The less than full AGC symbol may be adjacent to a full or less than full data symbol associated with the repetitive data transmission. That is, the data that is to be transmitted in the less than full AGC symbol may be a repetition of the data that is to be transmitted in the full or less than full data symbol adjacent to the less than full AGC symbol. For example, a repetition of the data from data symbol <NUM> (e.g., a half data symbol) may be transmitted in the less than full AGC symbol. In other examples, the data that is to be transmitted in the less than full AGC symbol may be a repetition of data that is to be transmitted in a data symbol that is not adjacent to the less than full AGC symbol.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a plurality of AGC symbols (e.g., full AGC symbols, less than full AGC symbols, and/or the like) in which repetitive data for a data symbol is transmitted (e.g., a full data symbol or a less than full data symbol). The plurality of AGC symbols may be located at the beginning of the group of downlink symbols (e.g., may be the first symbols in the group of downlink symbols) or another location in the group of downlink symbols. The plurality of full AGC symbols may be contiguous symbols or non-contiguous symbols. The plurality of AGC symbols may be adjacent to the data symbol associated with the repetitive data transmission. That is, the data that is to be transmitted in the plurality of AGC symbols may be a repetition of the data that is to be transmitted in the data symbol adjacent to the plurality of AGC symbols. For example, repetitions of the data from data symbol <NUM> may be transmitted in the plurality of AGC symbols. In other examples, the data that is to be transmitted in the plurality of AGC symbols may be a repetition of data that is to be transmitted in a data symbol that is not adjacent to the plurality of AGC symbols.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a plurality of AGC symbols (e.g., full AGC symbols, less than full AGC symbols, and/or the like) in which repetitive data for a plurality of data symbols is transmitted (e.g., full data symbols, less than full data symbols, and/or the like). The plurality of AGC symbols may be located at the beginning of the group of downlink symbols (e.g., may be the first symbols in the group of downlink symbols) or another location in the group of downlink symbols. The plurality of full AGC symbols may be continuous symbols or non-contiguous symbols. In some aspects, the plurality of AGC symbols may be adjacent to the plurality of data symbols associated with the repetitive data transmission. In some aspects, the plurality of AGC symbols may not be adjacent to the plurality of data symbols associated with the repetitive data transmission. In some aspects, one or more AGC symbols of the plurality of AGC symbols may be adjacent to the plurality of data symbols associated with the repetitive data transmission, and one or more other AGC symbols of the plurality of AGC symbols may not be adjacent to the plurality of data symbols associated with the repetitive data transmission. In an example, repetitions of the data from data symbol <NUM> and data symbol <NUM> may be respectively transmitted in AGC symbols of the plurality of AGC symbols.

As shown in <FIG>, UE <NUM> may perform outer loop AGC based at least in part on the AGC resource included in the group of downlink symbols. As shown by reference number <NUM>, to perform outer loop AGC for the one or more data symbols included in the group of downlink symbols, UE <NUM> may determine an AGC gain parameter for the group of downlink symbols. UE <NUM> may determine the AGC gain parameter by performing one or more signal measurements of the AGC-RS or repetitive data transmission of the AGC resource. The one or more signal measurements may include a reference signal received power (RSRP) measurement, a received signal strength indicator (RSSI) measurement, a reference signal received quality (RSRQ) measurement, and/or the like. UE <NUM> may determine the AGC parameter (e.g., an RF gain parameter and/or another type of AGC parameter), for the one or more data symbols that are included in the group of downlink symbols, based at least in part on a result of the one or more signal measurements.

As further shown in <FIG>, and by reference number <NUM>, UE <NUM> may perform, based at least in part on the AGC parameter, AGC for the one or more data symbols included in the group of data symbols. For example, UE <NUM> may use the RF gain parameter and/or another type of AGC parameter to perform outer loop AGC to adjust an RF gain to increase or decrease a received signal strength of the one or more data symbols. Accordingly, if the receive signal strength of the one or more data symbols is too weak, UE <NUM> may use the RF gain parameter to boost one or more receiver gain stages, in an RF chain of UE <NUM>, to reduce noise and improve the SNR of the transmission of the one or more data symbols. Moreover, if the receive signal strength of the transmission of the one or more data symbols is too strong, UE <NUM> may use the RF gain parameter to attenuate the one or more receiver gain stages in the RF chain to reduce signal clipping and/or nonlinear degradations of the transmission of the one or more data symbols.

In this way, UE <NUM> is capable of using the AGC parameter to perform outer loop AGC for transitions between full-duplex mode and non-full-duplex mode, which increases SNR, decreases clipping, and/or decreases nonlinear degradations for communications that are received at UE <NUM>.

<FIG> and <FIG> are diagrams illustrating an example <NUM> of receiver automatic gain control, in accordance with various aspects of the present disclosure. As shown in <FIG>, example <NUM> may include a user equipment (e.g., UE <NUM>) and a base station (e.g., BS <NUM>). In some aspects, UE <NUM> and BS <NUM> may be communicatively connected and may communicate via a wireless communication link. The wireless communication link may include a downlink and an uplink. In some aspects, UE <NUM> and BS <NUM> may communicate using various communication modes, such as a full duplex mode, a non-full-duplex mode, and/or the like.

As shown in <FIG>, and by reference number <NUM>, BS <NUM> may configure UE <NUM> with a plurality of AGC parameters by transmitting, to UE <NUM>, a first communication that indicates the plurality of AGC parameters. In some aspects, BS <NUM> may transmit the first communication based at least in part on UE <NUM> communicatively connecting with BS <NUM>, may transmit the first communication to UE <NUM> by broadcasting and/or multicasting the first communication to UE <NUM> and/or one or more other UEs, and/or the like. In some aspects, the first communication may include a broadcast communication (e.g., transmitted on a physical broadcast channel (PBCH)), such as a master information block (MIB), a system information block (SIB), a remaining minimum system information (RMSI) communication, an other system information (OSI) communication, and/or the like. In some aspects, the first communication may include a signaling communication (e.g., transmitted on a physical downlink control channel (PDCCH)), such as an RRC communication, a MAC-CE communication, a DCI communication, and/or the like.

In some aspects, the plurality of AGC parameters may include a plurality of downlink power ratios and/or another type of AGC parameter. In some aspects, a downlink power ratio may include a ratio between downlink power for full-duplex communication and a downlink power for non-full-duplex communication. In some aspects, a downlink power ratio may include a ratio between downlink power for a non-full-duplex communication and a downlink power for a full-duplex communication. BS <NUM> may configure UE <NUM> with the plurality of downlink power ratios so that BS <NUM> can instruct UE <NUM> to use a particular downlink power ratio, of the plurality of downlink power ratios, for AGC for a particular group (or groups) of downlink symbols. In some aspects, UE <NUM> may use a downlink power ratio to determine an RF gain parameter, for full-duplex communication, from an RF gain parameter for non-full-duplex communication. In some aspects, UE <NUM> may use a downlink power ratio to determine an RF gain parameter, for non-full-duplex communication, from an RF gain parameter for full-duplex communication.

As shown in <FIG>, and by reference number <NUM>, BS <NUM> may transmit, to UE <NUM>, a second communication that indicates an AGC parameter, of the plurality of AGC parameters, for a group (or for a plurality of groups) of downlink symbols. The second communication may include a signaling communication (e.g., transmitted on a PDCCH), such as an RRC communication, a MAC-CE communication, a DCI communication, and/or the like. In some aspects, BS <NUM> may transmit the second communication in another group of downlink symbols preceding the group of downlink symbols (e.g., adjacent to the group of downlink symbols or not adjacent to the group of downlink symbols) for which UE <NUM> is to use the AGC parameter to perform AGC.

In some aspects, BS <NUM> may indicate an AGC parameter for each group of downlink symbols transmitted from BS <NUM>. In some aspects, BS <NUM> may indicate an AGC parameter based at least in part on a transition between transition modes (e.g., a transition from a full-duplex mode to a non-full-duplex mode, a transition from a non-full-duplex mode to a full-duplex mode, and/or the like). In this case, BS <NUM> may indicate an AGC parameter based at least in part on a transition to a full-duplex resource that follows a non-full-duplex resource, may indicate an AGC parameter based at least in part on a transition to a non-full-duplex resource that follows a full-duplex resource, and/or the like. In some aspects, BS <NUM> may indicate an AGC parameter based at least in part on receiving, from UE <NUM>, an indication of received power saturation at UE <NUM>. The indication of the received power saturation may include a saturation index and/or another type of indication of received power saturation. UE <NUM> may transmit the indication of the received power saturation on a PUCCH, on a PUSCH, and/or the like.

As further shown in <FIG>, and by reference number <NUM>, UE <NUM> may perform AGC, for one or more data symbols included in the group of downlink symbols, based at least in part on the AGC parameter (e.g., the RF gain ratio) indicated in the second communication. In some aspects, UE <NUM> may determine, based at least in part on the RF gain ratio, an RF gain that is to be used for outer loop AGC for the one or more data symbols included in the group of downlink symbols. For example, UE <NUM> may use the RF gain ratio to adjust (e.g., increase or decrease) the RF gain that was used for the group of downlink symbols in which the second communication was received from BS <NUM>, and use the adjusted RF gain as the RF gain for the one or more data symbols included in the group of downlink symbols.

Accordingly, if the receive signal strength of the one or more data symbols is too weak, UE <NUM> may use the RF gain parameter to boost one or more receiver gain stages, in an RF chain of UE <NUM>, to reduce noise and improve the SNR of the transmission of the one or more data symbols. Moreover, if the receive signal strength of the transmission of the one or more data symbols is too strong, UE <NUM> may use the RF gain parameter to attenuate the one or more receiver gain stages in the RF chain to reduce signal clipping and/or nonlinear degradations of the transmission of the one or more data symbols.

As indicated above, <FIG> and <FIG> are provided as an example. Other examples may differ from what is described with respect to <FIG> and <FIG>.

As shown in <FIG>, and by reference number <NUM>, UE <NUM> may communicate with BS <NUM> by transmitting a group of uplink symbols to BS <NUM>. The group of uplink symbols may be included in a full-duplex resource or a non-full-duplex resource associated with BS <NUM>. The group of uplink symbols may include an AGC resource and one or more data symbols. The AGC resource may include a reference signal (e.g., an AGC-RS and/or another type of reference signal), a repetitive data transmission of data that is transmitted in the one or more data symbols, and/or the like.

In some aspects, BS <NUM> (and/or another base station) may indicate a configuration of the AGC resource to UE <NUM>. The configuration of the AGC resource may be indicated in a signaling communication, such as an RRC communication, a MAC-CE communication, a DCI communication, and/or the like. In some aspects, the configuration of the AGC resource may indicate whether a particular group of uplink symbols includes an AGC resource and/or one or more parameters for the AGC resource in the group of uplink symbols. UE <NUM> may transmit the AGC resource in the group of uplink symbols based at least in part on receiving the indication of the configuration.

In some aspects, UE <NUM> may include the AGC resource in each group of uplink symbols transmitted from UE <NUM>. In some aspects, UE <NUM> may include the AGC resource based at least in part on a transition between transition modes (e.g., a transition from a full-duplex mode to a non-full-duplex mode, a transition from a non-full-duplex mode to a full-duplex mode, and/or the like). In this case, UE <NUM> may include an AGC resource in a full-duplex resource that follows a non-full-duplex resource, may include an AGC resource in a non-full-duplex resource that follows a full-duplex resource, and/or the like.

The one or more parameters for the AGC resource may include a subcarrier spacing of the AGC resource (e.g., the subcarrier spacing of the AGC resource may be the same or different from the subcarrier spacing of the one or more data symbols), a transmit power of the AGC resource (e.g., the transmit power of the AGC resource may be the same or different from the transmit power of the one or more data symbols), a location of the AGC resource in the group of uplink symbols (e.g., an indication of the symbols that include the AGC resource), a length of the AGC resource (e.g., a quantity of symbols included in the AGC resource), a type of the AGC resource (e.g., whether the AGC resource includes an AGC-RS or a repetitive data transmission), a QCL of the AGC resource (e.g., an indication of whether the AGC resource is QCL'ed with the one or more data symbols), and/or the like.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a full AGC symbol in which the AGC-RS is transmitted. The full AGC symbol may be located at the beginning of the group of uplink symbols (e.g., may be the first symbol in the group of uplink symbols), such that BS <NUM> may use the AGC-RS to perform AGC for the data symbols included in the group of uplink symbols, or another location in the group of uplink symbols.

As shown in Example <NUM> illustrated in <FIG>, the AGC-RS may be transmitted in less than a full AGC symbol in the group of uplink symbols. For example, the AGC-RS may be transmitted in a half AGC symbol, a quarter AGC symbol, and/or other symbol portions. The less than a full AGC symbol may be located at the beginning of the group of uplink symbols or another location in the group of uplink symbols.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a plurality of full AGC symbols in which the AGC-RS is transmitted. The plurality of full AGC symbols may be located at the beginning of the group of uplink symbols (e.g., may be the first symbols in the group of uplink symbols) or another location in the group of uplink symbols. The plurality of full AGC symbols may be contiguous symbols or non-contiguous symbols. Other examples of AGC resource configurations include a plurality of less than full AGC symbols in the group of uplink symbols, a combination of full AGC symbols and less than full AGC symbols in the group of uplink symbols, and/or the like.

<FIG> illustrates various examples of AGC resource configurations where the AGC resource includes a repetitive data transmission of data that is transmitted in the one or more data symbols included in the group of uplink symbols. Other examples of AGC resource configurations for a repetitive data transmission may be used.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a full AGC symbol in which repetitive data for a full data symbol is transmitted. The full AGC symbol may be located at the beginning of the group of uplink symbols (e.g., may be the first symbol in the group of uplink symbols) such that BS <NUM> may use the repetitive data transmission to perform AGC for the data symbols included in the group of uplink symbols. The full AGC symbol may be adjacent to the data symbol associated with the repetitive data transmission. That is, the data that is to be transmitted in the full AGC symbol may be a repetition of the data that is to be transmitted in the data symbol adjacent to the full AGC symbol. For example, a repetition of the data from data symbol <NUM> may be transmitted in the full AGC symbol. In other examples, the data that is to be transmitted in the full AGC symbol may be a repetition of data that is to be transmitted in a data symbol that is not adjacent to the full AGC symbol.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a less than full AGC symbol (e.g., a half AGC symbol, a quarter AGC symbol, and/or the like) in which repetitive data for a full data symbol is transmitted. The less than full AGC symbol may be located at the beginning of the group of uplink symbols (e.g., may be the first half-symbol in the group of uplink symbols). The less than full AGC symbol may be adjacent to a full or less than full data symbol associated with the repetitive data transmission. That is, the data that is to be transmitted in the less than full AGC symbol may be a repetition of the data that is to be transmitted in the full or less than full data symbol adjacent to the less than full AGC symbol. For example, a repetition of the data from data symbol <NUM> (e.g., a half data symbol) may be transmitted in the less than full AGC symbol. In other examples, the data that is to be transmitted in the less than full AGC symbol may be a repetition of data that is to be transmitted in a data symbol that is not adjacent to the less than full AGC symbol.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a plurality of AGC symbols (e.g., full AGC symbols, less than full AGC symbols, and/or the like) in which repetitive data for a data symbol is transmitted (e.g., a full data symbol or a less than full data symbol). The plurality of AGC symbols may be located at the beginning of the group of uplink symbols (e.g., may be the first symbols in the group of uplink symbols) or another location in the group of uplink symbols. The plurality of full AGC symbols may be contiguous symbols or non-contiguous symbols. The plurality of AGC symbols may be adjacent to the data symbol associated with the repetitive data transmission. That is, the data that is to be transmitted in the plurality of AGC symbols may be a repetition of the data that is to be transmitted in the data symbol adjacent to the plurality of AGC symbols. For example, repetitions of the data from data symbol <NUM> may be transmitted in the plurality of AGC symbols. In other examples, the data that is to be transmitted in the plurality of AGC symbols may be a repetition of data that is to be transmitted in a data symbol that is not adjacent to the plurality of AGC symbols.

As shown in Example <NUM> illustrated in <FIG>, the AGC resource may include a plurality of AGC symbols (e.g., full AGC symbols, less than full AGC symbols, and/or the like) in which repetitive data for a plurality of data symbols is transmitted (e.g., full data symbols, less than full data symbols, and/or the like). The plurality of AGC symbols may be located at the beginning of the group of uplink symbols (e.g., may be the first symbols in the group of uplink symbols) or another location in the group of uplink symbols. The plurality of full AGC symbols may be continuous symbols or non-contiguous symbols. In some aspects, the plurality of AGC symbols may be adjacent to the plurality of data symbols associated with the repetitive data transmission. In some aspects, the plurality of AGC symbols may not be adjacent to the plurality of data symbols associated with the repetitive data transmission. In some aspects, one or more AGC symbols of the plurality of AGC symbols may be adjacent to the plurality of data symbols associated with the repetitive data transmission, and one or more other AGC symbols of the plurality of AGC symbols may not be adjacent to the plurality of data symbols associated with the repetitive data transmission. In an example, repetitions of the data from data symbol <NUM> and data symbol <NUM> may be respectively transmitted in AGC symbols of the plurality of AGC symbols.

As shown in <FIG>, BS <NUM> may perform outer loop AGC based at least in part on the AGC resource included in the group of uplink symbols. As shown by reference number <NUM>, to perform outer loop AGC for the one or more data symbols included in the group of uplink symbols, BS <NUM> may determine an AGC gain parameter for the group of uplink symbols. BS <NUM> may determine the AGC gain parameter by performing one or more signal measurements of the AGC-RS or repetitive data transmission of the AGC resource. The one or more signal measurements may include an RSRP measurement, an RSSI measurement, an RSRQ measurement, and/or the like. BS <NUM> may determine the AGC parameter (e.g., an RF gain parameter and/or another type of AGC parameter), for the one or more data symbols that are included in the group of uplink symbols, based at least in part on a result of the one or more signal measurements.

As further shown in <FIG>, and by reference number <NUM>, BS <NUM> may perform, based at least in part on the AGC parameter, AGC for the one or more data symbols included in the group of data symbols. For example, BS <NUM> may use the RF gain parameter and/or another type of AGC parameter to perform outer loop AGC to adjust an RF gain to increase or decrease a received signal strength of the one or more data symbols. Accordingly, if the receive signal strength of the one or more data symbols is too weak, BS <NUM> may use the RF gain parameter to boost one or more receiver gain stages, in an RF chain of BS <NUM>, to reduce noise and improve the SNR of the transmission of the one or more data symbols. Moreover, if the receive signal strength of the transmission of the one or more data symbols is too strong, BS <NUM> may use the RF gain parameter to attenuate the one or more receiver gain stages in the RF chain to reduce signal clipping and/or nonlinear degradations of the transmission of the one or more data symbols.

In this way, BS <NUM> is capable of using the AGC parameter to perform outer loop AGC for transitions between full-duplex mode and non-full-duplex mode, which increases SNR, decreases clipping, and/or decreases nonlinear degradations for communications that are received at BS <NUM>.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a UE , in accordance with various aspects of the present disclosure. Example process <NUM> is an example where a UE (e.g., UE <NUM>) performs operations associated with receiver automatic gain control.

As shown in <FIG>, in some aspects, process <NUM> may include determining an automatic gain control parameter, for a group of downlink symbols associated with a base station, based at least in part on an automatic gain control resource included in the group of downlink symbols (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may determine an automatic gain control parameter, for a group of downlink symbols associated with a base station, based at least in part on an automatic gain control resource included in the group of downlink symbols, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include performing, based at least in part on the automatic gain control parameter, automatic gain control for one or more data symbols included in the group of downlink symbols (block <NUM>). For example, the UE (e.g., using demodulator <NUM>, receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may perform, based at least in part on the automatic gain control parameter, automatic gain control for one or more data symbols included in the group of downlink symbols, 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, in connection with process <NUM>, the automatic gain control parameter comprises a radio frequency gain parameter. In a second aspect, alone or in combination with the first aspect, and in connection with process <NUM>, the group of downlink symbols is included in at least one of a full-duplex resource associated with the base station or a non-full-duplex resource associated with the base station. In a third aspect, alone or in combination with any one or more of the first through second aspects, and in connection with process <NUM>, process <NUM> further comprises receiving a communication that indicates a configuration of the automatic gain control resource, and the communication comprises at least one of a radio resource control communication, a medium access control control element communication, or a downlink control information communication.

In a fourth aspect, alone or in combination with any one or more of the first through third aspects, and in connection with process <NUM>, the automatic gain control resource comprises at least one of a half automatic gain control symbol included in the group of downlink symbols, a full automatic gain control symbol included in the group of downlink symbols, or a plurality of automatic gain control symbols included in the group of downlink symbols. In a fifth aspect, alone or in combination with any one or more of the first through fourth aspects, and in connection with process <NUM>, the automatic gain control resource comprises an automatic gain control reference signal. In some aspects, determining the automatic gain control parameter comprises performing one or more signal measurements of the automatic gain control reference signal and determining the automatic gain control parameter based at least in part on the one or more signal measurements. In a sixth aspect, alone or in combination with any one or more of the first through fifth aspects, and in connection with process <NUM>, the one or more signal measurements comprise at least one of a received signal strength indicator measurement, a reference signal received power measurement, or a reference signal received quality measurement.

In a seventh aspect, alone or in combination with any one or more of the first through sixth aspects, and in connection with process <NUM>, the automatic gain control resource is located at a beginning of the group of downlink symbols. In an eighth aspect, alone or in combination with any one or more of the first through seventh aspects, and in connection with process <NUM>, a configuration of the automatic gain control resource is based at least in part on at least one of a subcarrier spacing of the one or more data symbols, or a transmit power of the one or more data symbols. In a ninth aspect, alone or in combination with any one or more of the first through eighth aspects, and in connection with process <NUM>, the automatic gain control resource is quasi-co-located with the one or more data symbols. In a tenth aspect, alone or in combination with any one or more of the first through ninth aspects, and in connection with process <NUM>, a subcarrier spacing, of the automatic gain control resource, is different from a subcarrier spacing of the one or more data symbols.

In a eleventh aspect, alone or in combination with any one or more of the first through tenth aspects, and in connection with process <NUM>, the automatic gain control resource comprises a repetitive data transmission associated with the one or more data symbols, and determining the automatic gain control parameter comprises performing one or more signal measurements of the repetitive data transmission and determining the automatic gain control parameter based at least in part on the one or more signal measurements. In a twelfth aspect, alone or in combination with any one or more of the first through eleventh aspects, and in connection with process <NUM>, the one or more signal measurements comprise at least one of a received signal strength indicator measurement, a reference signal received power measurement, or a reference signal received quality measurement.

In a thirteenth aspect, alone or in combination with any one or more of the first through twelfth aspects, and in connection with process <NUM>, the automatic gain control resource is included in a full automatic gain control symbol included in the group of downlink symbols and the repetitive data transmission is associated with a data symbol, of the one or more data symbols, adjacent to the full automatic gain control symbol. In a fourteenth aspect, alone or in combination with any one or more of the first through thirteenth aspects, and in connection with process <NUM>, the automatic gain control resource is included in a plurality of contiguous full automatic gain control symbols included in the group of downlink symbols and the repetitive data transmission is associated with a data symbol, of the one or more data symbols, adjacent to the plurality of contiguous full automatic gain control symbols.

In a fifteenth aspect, alone or in combination with any one or more of the first through fourteenth aspects, and in connection with process <NUM>, the automatic gain control resource is included in a plurality of contiguous full automatic gain control symbols included in the group of downlink symbols and the repetitive data transmission is associated with a plurality of contiguous data symbols, of the one or more data symbols, adjacent to the plurality of contiguous full automatic gain control symbols. In some aspects, respective full automatic gain control symbols, of the plurality of contiguous full automatic gain control symbols, include respective repetitive data transmissions of the plurality of contiguous data symbols.

In a sixteenth aspect, alone or in combination with any one or more of the first through fifteenth aspects, and in connection with process <NUM>, the automatic gain control resource includes a half automatic gain control symbol included in the group of downlink symbols and the repetitive data transmission is associated with a half data symbol, of the one or more data symbols, adjacent to the half automatic gain control symbol. In a seventeenth aspect, alone or in combination with any one or more of the first through sixteenth aspects, and in connection with process <NUM>, process <NUM> further comprises detecting received power saturation at the user equipment, transmitting, to the base station and based at least in part on detecting the received power saturation, a saturation index to indicate, to the base station, the received power saturation, and receiving, from the base station and based at least in part on transmitting the saturation index to the base station, an indication that the group of downlink symbols includes the automatic gain control resource. In an eighteenth aspect, alone or in combination with any one or more of the first through seventeenth aspects, and in connection with process <NUM>, transmitting the saturation index comprises transmitting the saturation index on a physical uplink control channel, or transmitting the saturation index on a physical uplink shared channel.

As shown in <FIG>, in some aspects, process <NUM> may include receiving a first communication that indicates a plurality of automatic gain control parameters (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive a first communication that indicates a plurality of automatic gain control parameters, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include receiving a second communication that indicates an automatic gain control parameter, of the plurality of automatic gain control parameters, for a group of downlink symbols (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive a second communication that indicates an automatic gain control parameter, of the plurality of automatic gain control parameters, for a group of downlink symbols, as described above.

In a first aspect, and in connection with process <NUM>, the plurality of automatic gain control parameters comprises a plurality of downlink power ratios between a full-duplex resource associated with a base station and a non-full-duplex resource associated with the base station. In a second aspect, alone or in combination with the first aspect, and in connection with process <NUM>, the first communication comprises a master information block, a system information block, a remaining minimum system information communication, or an other system information communication. In a third aspect, alone or in combination with any one or more of the first through second aspects, and in connection with process <NUM>, the second communication comprises a radio resource control communication, a medium access control control element communication, or a downlink control information communication. In a fourth aspect, alone or in combination with any one or more of the first through third aspects, and in connection with process <NUM>, receiving the second communication comprises receiving the second communication in a downlink symbol that is included in another group of downlink symbols.

<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 receiver automatic gain control.

As shown in <FIG>, in some aspects, process <NUM> may include determining an automatic gain control parameter, for a group of uplink symbols associated with a user equipment, based at least in part on an automatic gain control resource included in the group of uplink symbols (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 determine an automatic gain control parameter, for a group of uplink symbols associated with a user equipment, based at least in part on an automatic gain control resource included in the group of uplink symbols, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include performing, based at least in part on the automatic gain control parameter, automatic gain control for one or more data symbols included in the group of uplink symbols (block <NUM>). For example, the BS (e.g., using transmit processor <NUM>, demodulator <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may perform, based at least in part on the automatic gain control parameter, automatic gain control for one or more data symbols included in the group of uplink symbols, as described above.

In a first aspect, and in connection with process <NUM>, the automatic gain control parameter comprises a radio frequency gain parameter. In a second aspect, alone or in combination with the first aspect, and in connection with process <NUM>, the group of uplink symbols is included in at least one of a full-duplex resource associated with the base station or a non-full-duplex resource associated with the base station. In a second aspect, alone or in combination with the first aspect, and in connection with process <NUM>, process <NUM> further comprises transmitting a communication that indicates a configuration of the automatic gain control resource, the communication comprising at least one of a radio resource control communication, a medium access control control element communication, or a downlink control information communication.

In a third aspect, alone or in combination with any one or more of the first through second aspects, and in connection with process <NUM>, the automatic gain control resource comprises at least one of a half automatic gain control symbol included in the group of uplink symbols a full automatic gain control symbol included in the group of uplink symbols, or a plurality of automatic gain control symbols included in the group of uplink symbols. In a fourth aspect, alone or in combination with any one or more of the first through third aspects, and in connection with process <NUM>, the automatic gain control resource comprises an automatic gain control reference signal, and determining the automatic gain control parameter comprises determining the automatic gain control parameter based at least in part on the one or more signal measurements.

In a fifth aspect, alone or in combination with any one or more of the first through fourth aspects, and in connection with process <NUM>, the one or more signal measurements comprise at least one of a received signal strength indicator measurement, a reference signal received power measurement, or a reference signal received quality measurement. In a sixth aspect, alone or in combination with any one or more of the first through fifth aspects, and in connection with process <NUM>, the automatic gain control resource is located at a beginning of the group of uplink symbols. In a seventh aspect, alone or in combination with any one or more of the first through sixth aspects, and in connection with process <NUM>, a configuration of the automatic gain control resource is based at least in part on at least one of a subcarrier spacing of the one or more data symbols or a transmit power of the one or more data symbols. In an eighth aspect, alone or in combination with any one or more of the first through seventh aspects, and in connection with process <NUM>, the automatic gain control resource is quasi-co-located with the one or more data symbols.

In a ninth aspect, alone or in combination with any one or more of the first through eighth aspects, and in connection with process <NUM>, a subcarrier spacing, of the automatic gain control resource, is different from a subcarrier spacing of the one or more data symbols. In a tenth aspect, alone or in combination with any one or more of the first through ninth aspects, and in connection with process <NUM>, the automatic gain control resource comprises a repetitive data transmission associated with the one or more data symbols. In some aspects, determining the automatic gain control parameter comprises performing one or more signal measurements of the automatic gain control reference signal and determining the automatic gain control parameter based at least in part on the one or more signal measurements. In an eleventh aspect, alone or in combination with any one or more of the first through tenth aspects, and in connection with process <NUM>, the one or more signal measurements comprise at least one of a received signal strength indicator measurement, a reference signal received power measurement, or a reference signal received quality measurement.

In a twelfth aspect, alone or in combination with any one or more of the first through eleventh aspects, and in connection with process <NUM>, the automatic gain control resource is included in a full automatic gain control symbol included in the group of uplink symbols and the repetitive data transmission is associated with a data symbol, of the one or more data symbols, adjacent to the full automatic gain control symbol. In a thirteenth aspect, alone or in combination with any one or more of the first through twelfth aspects, and in connection with process <NUM>, the automatic gain control resource is included in a plurality of contiguous full automatic gain control symbols included in the group of uplink symbols and the repetitive data transmission is associated with a data symbol, of the one or more data symbols, adjacent to the plurality of contiguous full automatic gain control symbols.

In a fourteenth aspect, alone or in combination with any one or more of the first through thirteenth aspects, and in connection with process <NUM>, the automatic gain control resource is included in a plurality of contiguous full automatic gain control symbols included in the group of uplink symbols and the repetitive data transmission is associated with a plurality of contiguous data symbols, of the one or more data symbols, adjacent to the plurality of contiguous full automatic gain control symbols. In some aspects, respective full automatic gain control symbols, of the plurality of contiguous full automatic gain control symbols include respective repetitive data transmissions of the plurality of contiguous data symbols.

In a fifteenth aspect, alone or in combination with any one or more of the first through fourteenth aspects, and in connection with process <NUM>, the automatic gain control resource includes a half automatic gain control symbol included in the group of uplink symbols and the repetitive data transmission is associated with a half data symbol, of the one or more data symbols, adjacent to the half automatic gain control symbol.

As shown in <FIG>, in some aspects, process <NUM> may include transmitting, to a user equipment, a first communication that indicates a plurality of automatic gain control parameters (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, to a user equipment, a first communication that indicates a plurality of automatic gain control parameters, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include transmitting, to the user equipment, a second communication that indicates an automatic gain control parameter, of the plurality of automatic gain control parameters, for a group of downlink symbols associated with the base station (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, to the user equipment, a second communication that indicates an automatic gain control parameter, of the plurality of automatic gain control parameters, for a group of downlink symbols associated with the base station, as described above.

In a first aspect, and in connection with process <NUM>, the plurality of automatic gain control parameters comprises a plurality of downlink power ratios between a full-duplex resource associated with a base station and a non-full-duplex resource associated with the base station. In a second aspect, alone or in combination with the first aspect, and in connection with process <NUM>, the first communication comprises a master information block, a system information block, a remaining minimum system information communication, or an other system information communication. In a third aspect, alone or in combination with any one or more of the first through second aspects, and in connection with process <NUM>, the second communication comprises a radio resource control communication, a medium access control control element communication, or a downlink control information communication.

In a fourth aspect, alone or in combination with any one or more of the first through third aspects, and in connection with process <NUM>, transmitting the second communication comprises transmitting the second communication in a downlink symbol that is included in another group of downlink symbols. In a fifth aspect, alone or in combination with any one or more of the first through fourth aspects, and in connection with process <NUM>, transmitting the second communication comprises transmitting the second communication based at least in part on receiving, from the user equipment, an indication of received power saturation at the user equipment. In a sixth aspect, alone or in combination with any one or more of the first through fifth aspects, and in connection with process <NUM>, the indication of the received power saturation at the user equipment comprises a saturation index included in an uplink communication. In a seventh aspect, alone or in combination with any one or more of the first through sixth aspects, and in connection with process <NUM>, the uplink communication comprises a physical uplink control channel communication, or a physical uplink shared channel communication.

Claim 1:
A user equipment (<NUM>) for wireless communication, comprising:
a memory; and
one or more processors coupled to the memory, the memory and the one or more processors configured to:
determine an automatic gain control parameter, for a group of downlink symbols received via a signal transmitted by a base station, based at least in part on an automatic gain control resource included in the group of downlink symbols; and
perform, based at least in part on the automatic gain control parameter, automatic gain control for one or more data symbols included in the group of downlink symbols to enable regulation of the signal strength of the signal, wherein the group of downlink symbols is included in at least one of:
a full-duplex resource associated with the base station, or a non-full-duplex resource associated with the base station.