Patent Description:
<CIT> discloses that control of an operation in part of frequency bands is enabled. <CIT> discloses a slot format indication method, device and system, for use in solving the existing problem of a terminal being unable to obtain the SFI of a terminal paired therewith.

In some aspects, a method of wireless communication, performed by a user equipment (UE), may include receiving, from a base station, downlink control information (DCI) that includes a plurality of frequency domain slot format indications (SFIs); and communicating with the base station based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs.

In some aspects, a method of wireless communication, performed by a base station, may include transmitting, to a UE, DCI that includes a plurality of frequency domain SFIs; and communicating with the UE based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs.

In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to receive, from a base station, DCI that includes a plurality of frequency domain SFIs; and communicate with the base station based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs.

In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to transmit, to a UE, DCI that includes a plurality of frequency domain SFIs; and communicate with the UE based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs.

In some aspects, a UE for wireless communication may include a memory, a transceiver, and one or more processors coupled to the memory. The memory and the one or more processors may be configured to receive, from a base station, via the transceiver, DCI that includes a plurality of frequency domain SFIs; and communicate, via the transceiver, with the base station based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs.

In some aspects, a base station for wireless communication may include a memory, a transceiver, and one or more processors coupled to the memory. The memory and the one or more processors may be configured to transmit, to a UE, via the transceiver, DCI that includes a plurality of frequency domain SFIs; and communicate, via the transceiver, with the UE based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs.

In some aspects, an apparatus for wireless communication may include means for receiving, from a base station, DCI that includes a plurality of frequency domain SFIs; and means for communicating with the base station based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs.

In some aspects, an apparatus for wireless communication may include means for transmitting, to a UE, DCI that includes a plurality of frequency domain SFIs; and means for communicating with the UE based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs.

While aspects are described in the present disclosure by illustration to some examples, those skilled in the art will understand that such aspects may be implemented in many different arrangements and scenarios. Techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, some aspects may be implemented via integrated chip embodiments or other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, or artificial intelligence-enabled devices). Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, or system-level components. Devices incorporating described aspects and features may include additional components and features for implementation and practice of claimed and described aspects. For example, transmission and reception of wireless signals may include a number of components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processor(s), interleavers, adders, or summers). It is intended that aspects described herein may be practiced in a wide variety of devices, components, systems, distributed arrangements, or end-user devices of varying size, shape, and constitution.

For example, the UEs <NUM> may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V<NUM>V) protocol or a vehicle-to-infrastructure (V2I) protocol), and/or a mesh network.

The transceiver may be used by a processor (e.g., controller/processor <NUM>) and memory <NUM> to perform aspects of any of the methods described herein (for example, as described with reference to <FIG>).

The transceiver may be used by a processor (e.g., controller/processor <NUM>) and memory <NUM> to perform aspects of any of the methods described herein (for example, as described with reference to <FIG>).

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 downlink control information (DCI) for frequency domain slot format indication, 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. In some aspects, memory <NUM> and/or memory <NUM> may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly, or after compiling, converting, and/or interpreting) by one or more processors of the base station <NUM> and/or the UE <NUM>, may cause the one or more processors, the UE <NUM>, and/or the base station <NUM> to perform or direct operations of, for example, process <NUM> of <FIG>, process <NUM> of <FIG>, and/or other processes as described herein. In some aspects, executing instructions may include running the instructions, converting the instructions, compiling the instructions, and/or interpreting the instructions, among other examples.

In some aspects, UE <NUM> may include means for receiving (e.g., using antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like), from a base station, DCI that includes a plurality of frequency domain slot format indications (SFIs), means for communicating (e.g., using antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, and/or the like) with the base station based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs, and/or the like. In some aspects, such means may include one or more components of UE <NUM> described in connection with <FIG>, such as controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, and/or the like.

In some aspects, base station <NUM> may include means for transmitting (e.g., using controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, memory <NUM>, and/or the like), to a UE, DCI that includes a plurality of frequency domain SFIs, means for communicating (e.g., using controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, and/or the like) with the UE based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs, and/or the like. In some aspects, such means may include one or more components of base station <NUM> described in connection with <FIG>, such as antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, and/or the like.

<FIG> are diagrams illustrating examples <NUM>, <NUM>, <NUM> of full duplex (FD) communication, in accordance with the present disclosure. FD communication may include a contemporaneous uplink and downlink communication. For example, the uplink and downlink communication may at least partially overlap in time.

The example <NUM> of <FIG> includes a UE1 <NUM> and two base stations (e.g., TRPs) <NUM>-<NUM>, <NUM>-<NUM>, where the UE1 <NUM> is sending a UL transmission to base station <NUM>-<NUM> and is receiving a DL transmission from base station <NUM>-<NUM>. In the example <NUM> of <FIG>, FD is enabled for the UE1 <NUM>, and FD is not enabled for base stations <NUM>-<NUM>, <NUM>-<NUM> (e.g., half duplex (HD) communication is enabled for base stations <NUM>-<NUM>, <NUM>-<NUM>). Moreover, as shown by reference number <NUM>, the UL transmission to base station <NUM>-<NUM> may self-interfere with the DL transmission from base station <NUM>-<NUM>. This may be caused by a variety of factors, such as the transmit power used for the UL transmission (as compared to the DL transmission), radio frequency bleeding, and/or the like.

The example <NUM> of <FIG> includes two UEs, UE1 <NUM>-<NUM> and UE2 <NUM>-<NUM>, and a base station <NUM>, where the UE1 <NUM>-<NUM> is receiving a DL transmission from the base station <NUM> and the UE2 <NUM>-<NUM> is transmitting a UL transmission to the base station <NUM>. In the example <NUM> of <FIG>, FD is enabled for the base station <NUM>, and FD is not enabled for UE1 <NUM>-<NUM> and UE2 <NUM>-<NUM> (e.g., HD communication is enabled for UE1 <NUM>-<NUM> and UE2 <NUM>-<NUM>). Moreover, as shown by reference number <NUM>, the DL transmission from base station <NUM> to UE1 <NUM>-<NUM> may self-interfere with the UL transmission from UE2 <NUM>-<NUM> to base station <NUM>.

The example <NUM> of <FIG> includes a UE1 <NUM> and a base station <NUM>, where the UE1 <NUM> is receiving a DL transmission from the base station <NUM> and the UE1 <NUM> is transmitting a UL transmission to the base station <NUM>. In the example <NUM> of <FIG>, FD is enabled for both the UE1 <NUM> and the base station <NUM>. Moreover, as shown by reference number <NUM>, the UL transmission to base station <NUM> may self-interfere with the DL transmission from base station <NUM>.

<FIG> are diagrams illustrating various duplexing modes in a radio access network, in accordance with the present disclosure. <FIG> depicts a time division duplexing (TDD) mode of communication between a UE and a base station. In TDD, only one endpoint (e.g., one of a UE or a base station) may send information to another endpoint (e.g., the other of the UE or the base station) at a time. For example, in TDD, transmissions in different directions on a given channel are separated from one another using time division multiplexing. That is, at some times the channel is dedicated for transmissions in one direction, while at other times the channel is dedicated for transmissions in the other direction. In some cases, the direction may change rapidly, such as several times per slot. Thus, as illustrated in <FIG>, DL communications <NUM> are separated from UL communications <NUM> in time.

<FIG> depicts a frequency division duplexing (FDD) mode of communication between a UE and a base station. In FDD, both endpoints may simultaneously communicate with one another on different frequencies (e.g., different frequency bands, sets of sub-carriers, resource blocks, and/or the like). In the FDD mode, as shown in <FIG>, transmissions in different directions operate at different carrier frequencies. Thus, as illustrated in <FIG>, DL communications <NUM> are separated from UL communications <NUM> in frequency, shown as a guard band. In some cases, FDD may be referred to as full duplex because a wireless communication device may be capable of transmitting and receiving at the same time, where transmission uses a first frequency and reception uses a second frequency. Because simultaneous transmission and reception by a device in FDD use different frequencies, this full duplex mode may be referred to as sub-band FDD (or flexible duplex).

<FIG> depicts a true FD mode of communication between a UE and a base station. In the true FD mode, as shown in <FIG>, transmissions in different directions operate at the same carrier frequency or within overlapping bandwidths. In the example shown in <FIG>, DL communications <NUM> overlap (e.g., partially or fully) UL communications <NUM> in both time and frequency. Thus, when operating in a true FD mode, the UE and base station are configured for concurrent transmission and reception within an overlapping bandwidth. That is, simultaneous transmission and reception by a device in this mode can use the same frequency. As a result, this FD mode may be referred to as in-band FD.

<FIG> is a diagram illustrating examples of an FDD configuration, in accordance with the present disclosure. <FIG> shows examples of time intervals <NUM> (e.g., slots, slot groups, subframes, sub-slots, mini-slots, and/or the like). A time interval may include an uplink frequency region, a downlink frequency region, or both an uplink frequency region and a downlink frequency region. Each time interval may be associated with a control region, which is illustrated as a darker-shaded portion of the time interval, and/or a data region, which is shown as DL Data for a downlink frequency region or physical uplink shared channel (PUSCH) for an uplink frequency region. Uplink frequency regions are illustrated using a tighter dotted fill than downlink frequency regions.

An FDD configuration may indicate one or more downlink frequency regions and one or more uplink frequency regions. For example, an FDD configuration may divide an unpaired band (e.g., one or more component carriers of an unpaired band) into uplink frequency regions, downlink frequency regions, and/or other regions (e.g., guard bands and/or the like). An uplink frequency region and a downlink frequency region may or may not be equal in bandwidth. In some aspects, the FDD configuration may identify bandwidth part (BWP) configurations corresponding to the uplink frequency regions and downlink frequency regions. For example, a respective BWP may be configured for each uplink frequency region and each downlink frequency region. FDD may increase throughput and improve spectral efficiency, and may enable the usage of always-on uplink (e.g., for ultra reliable low latency communication (URLLC) control channels).

As further shown in <FIG>, a base station (or a UE) may include multiple antenna panels (e.g., groups of antenna ports), shown as Panel <NUM> and Panel <NUM>. The multiple antenna panels may enable simultaneous transmit (Tx) and receive (Rx) operations. Moreover, the multiple antenna panels may provide improved isolation for the simultaneous transmit and receive operations.

In some cases, as shown in <FIG>, the base station (or a UE) may switch, on a slot-to-slot basis, between FD mode and HD mode. As an example, in an HD downlink time interval (e.g., slot), the base station may transmit a downlink transmission using Panel <NUM> and Panel <NUM>. In an FD time interval, the base station may transmit a downlink transmission using Panel <NUM> and receive an uplink transmission using Panel <NUM>. In an HD uplink time interval, the base station may receive an uplink transmission using Panel <NUM> and Panel <NUM>.

As shown by reference number <NUM>, in an FD mode, downlink communication (e.g., on Panel <NUM>) may use the edges of a frequency band, and uplink communication (e.g., on Panel <NUM>) may use a middle region of the frequency band (e.g., between the edges). However, as shown, frequency bleeding of uplink communication may cause interference with downlink communication (which may be a problem for a UE), and frequency bleeding of downlink communication may cause interference with uplink communication (which may be a problem for a base station).

A base station (or a UE) may perform various techniques for nullifying or cancelling self-interference, such as antenna isolation (using physically separated antennas for transmission or reception, as described above), analog interference cancellation, digital interference cancellation, massive MIMO (M-MIMO) based beamforming nulling for clutter reflection, and sub-band FD to achieve isolation based at least in part on an adjacent channel leakage ratio (ACLR), and/or the like. In sub-band FD, the downlink and the uplink are in different portions of a band or component carrier, as described above. A guard band (GB) may be provided between the uplink and the downlink. Receive weighted overlap and add (WOLA) operations may reduce ACLR leakage to the uplink signal. Analog low pass filters may improve analog-digital converter (ADC) dynamic range.

Other examples may differ from what is provided with regard to <FIG>.

<FIG> is a diagram illustrating an example of time domain slot format indication, in accordance with the present disclosure. As shown in <FIG>, a UE may receive DCI (e.g., UE group common DCI, such as in DCI format 2_0) that includes a plurality of time domain slot format indications (SFIs, which may also be referred to as slot format indicators). The UE may also receive (e.g., prior to receiving the DCI) a configuration for a position-in-DCI (e.g., PositionInDCI) value that the UE is to use to determine a time domain SFI from the plurality of time domain SFIs. That is, the UE may use the position-in-DCI value to determine a position in the DCI associated with a time domain SFI that is to be used by the UE <NUM>. For example, as shown in <FIG>, the position-in-DCI value may indicate that SFI <NUM> is to be used.

Each time domain SFI may be associated with a respective slot format combination identifier (e.g., SlotFormatCombinationID). For example, SFI <NUM> may map to slot format combination identifier <NUM>. Moreover, the UE may be configured with a plurality of time domain configurations for one or more slots (or other time intervals), and each slot format combination identifier may map to a respective time domain configuration of the plurality of time domain configurations. For example, as shown in <FIG>, slot format combination identifier <NUM> may map to slot format <NUM>, slot format <NUM>, and slot format <NUM>, which indicate time domain configurations for three slots. In some aspects, a time domain configuration for one or more slots may identify symbols that are for uplink (U) communication, downlink (D) communication, or flexible (F) communication (e.g., uplink or downlink).

In some cases, a time domain SFI may indicate a time domain configuration that configures one or more slots for FD communication. However, current wireless networks may lack a mechanism to indicate, in DCI, an FD frequency domain configuration that is to be used for FD slots. Some techniques and apparatuses described herein provide DCI that includes a plurality of frequency domain SFIs that are respectively associated with FD frequency domain configurations. In this way, a UE may determine a frequency domain SFI, of the plurality of frequency domain SFIs, that is to be used for one or more FD slots.

<FIG> is a diagram illustrating an example <NUM> of DCI for frequency domain slot format indication, in accordance with the present disclosure. As shown in <FIG>, a base station <NUM> and a UE <NUM> may communicate with one another. In some aspects, the UE <NUM> may be capable of operating in an FD mode (e.g., an FD UE). In some aspects, the UE <NUM> may not be capable of operating in an FD mode, but may be aware of FD operation, FD slots, and/or the like (e.g., an FD-aware UE). In some aspects, the UE <NUM> may be capable of operating in an HD-FDD mode, whereby the UE <NUM> may perform only one of uplink communications or downlink communications in an FD slot.

As shown by reference number <NUM>, the base station <NUM> may transmit, and the UE <NUM> may receive, one or more FD frequency domain configurations <NUM>, <NUM>. An FD frequency domain configuration may indicate a frequency domain slot format for one or more FD slots. For example, an FD frequency domain configuration may identify a frequency location of one or more uplink frequency bands and one or more downlink frequency bands (e.g., across a carrier bandwidth, a channel bandwidth, a component carrier (CC) bandwidth (BW), and/or the like) in one or more FD slots. Additionally, an FD frequency domain configuration may identify a frequency location of one or more guard bands between the one or more uplink frequency bands and the one or more downlink frequency bands.

As shown in <FIG>, each FD frequency domain configuration may be associated with a respective slot frequency combination identifier (e.g., SlotFreqCombinationID). Moreover, each slot frequency combination identifier may be associated with a respective frequency domain SFI, as described below.

As described above, the UE <NUM> also may receive, from the base station <NUM>, one or more time domain configurations. As described above, each time domain configuration may be associated with a respective slot format combination identifier.

In some aspects, the one or more frequency domain configurations and/or the one or more time domain configurations may be radio resource control (RRC) configured for the UE <NUM>. That is, the base station <NUM> may transmit, and the UE <NUM> may receive, the one or more frequency domain configurations and/or the one or more time domain configurations via RRC signaling.

As shown by reference number <NUM>, the base station <NUM> may transmit, and the UE <NUM> may receive, a DCI position configuration for DCI that includes frequency domain SFIs (which may be referred to herein as frequency domain DCI). In some aspects, the DCI position configuration may include information that identifies a position-in-DCI value (e.g., FreqpositioninDCI) for frequency domain DCI. The position-in-DCI value identifies a position in DCI that is associated with an SFI that the UE <NUM> is to use (e.g., identifies which frequency domain SFI, of a plurality of frequency domain SFIs in DCI, that the UE <NUM> is to follow).

As described above, the UE <NUM> also may receive, from the base station <NUM>, a DCI position configuration for DCI that includes time domain SFIs (which may be referred to herein as time domain DCI). In some aspects, the DCI position configuration may include information that identifies a position-in-DCI value (e.g., PositionInDCI) for time domain DCI, as described above.

In some aspects, the DCI position configuration for frequency domain DCI and/or the DCI position configuration for time domain DCI is DCI-, medium access control control element (MAC-CE)-, or RRC-configured for the UE <NUM>. That is, the base station <NUM> may transmit, and the UE <NUM> may receive, the DCI position configuration for frequency domain DCI and/or the DCI position configuration for time domain DCI via DCI, a MAC-CE, or RRC signaling.

As shown by reference number <NUM>, the base station <NUM> may transmit, and the UE <NUM> may receive, DCI. In some aspects, the base station <NUM> may transmit time domain DCI (e.g., UE group common DCI, such as in DCI format 2_0). The time domain DCI may include a plurality of time domain SFIs. As described above, a time domain SFI may map to a slot format combination identifier that indicates a time domain configuration. In some aspects, the base station <NUM> may transmit frequency domain DCI (e.g., UE group common DCI, such as in a DCI format referred to herein as DCI format 2_x). The frequency domain DCI may include frequency domain information, such as a plurality of frequency domain SFIs. As described above, a frequency domain SFI may map to a slot frequency combination identifier that indicates a frequency domain configuration.

In some aspects, if the UE <NUM> is an FD UE or an FD-aware UE, then the UE <NUM> may monitor for, and receive, both the time domain DCI and the frequency domain DCI. In some aspects, if the UE <NUM> is operating in an HD mode (e.g., an HD UE), then the UE <NUM> may monitor for, and receive, only the time domain DCI.

In some aspects, the time domain DCI and the frequency domain DCI may be associated with (e.g., scrambled by) different radio network temporary identifiers (RNTIs). Accordingly, the UE <NUM> may use a first RNTI to receive the time domain DCI, and use a second RNTI (e.g., SFI-freq-RNTI) to receive the frequency domain DCI.

In some aspects, time domain DCI and frequency domain DCI may be associated with the same periodicity. That is, the UE <NUM> may monitor for frequency domain DCI at the same periodicity as the periodicity that the UE <NUM> uses to monitor for time domain DCI. In some aspects, time domain DCI and frequency domain DCI may be associated with different periodicities. That is, the UE <NUM> may monitor for frequency domain DCI at a different periodicity than the periodicity that the UE <NUM> uses to monitor for time domain DCI.

In some aspects, time domain DCI and frequency domain DCI may be associated with different physical downlink control channel (PDCCH) monitoring occasions. That is, the UE <NUM> may use a first set of PDCCH monitoring occasions to monitor for time domain DCI, and use a second set of PDCCH monitoring occasions to monitor for frequency domain DCI. This may be useful, for example, when a frequency domain SFI for the UE <NUM> is updated less frequently than a time domain SFI for the UE <NUM>.

In some aspects, PDCCH monitoring occasions used for frequency domain DCI may be independent of (e.g., uncorrelated with) PDCCH monitoring occasions used for time domain DCI. For example, the UE <NUM> may receive separate PDCCH monitoring configurations for time domain DCI and for frequency domain DCI.

In some aspects, PDCCH monitoring occasions used for frequency domain DCI may be offset in time and/or frequency relative to PDCCH monitoring occasions used for time domain DCI. For example, the UE <NUM> may receive a PDCCH monitoring configuration for time domain DCI, and may determine a PDCCH monitoring configuration for frequency domain DCI using a time offset and/or a frequency offset relative to the PDCCH monitoring configuration for time domain DCI.

In some aspects, PDCCH monitoring occasions used for time domain DCI and for frequency domain DCI may be the same. For example, the UE <NUM> may monitor for time domain DCI and for frequency domain DCI in the same PDCCH monitoring occasions, according to a PDCCH monitoring configuration for time domain DCI (or a PDCCH monitoring configuration for frequency domain DCI).

In some aspects, the UE <NUM> may be operating in an HD-FDD mode. In some aspects (e.g., when the UE <NUM> is operating in the HD-FDD mode), the UE <NUM> may monitor (e.g., may be configured to monitor) a PDCCH monitoring occasion for frequency domain DCI regardless of whether a time domain SFI, of a time domain DCI previously received by the UE <NUM>, indicates a time domain configuration with an FD slot. In this case, the time domain DCI may indicate (e.g., according to an indicated time domain configuration) slots that are to be used for uplink and/or slots that are to be used for downlink. Moreover, the frequency domain DCI may indicate (e.g., according to an indicated FD frequency domain configuration) a downlink frequency location (e.g., a downlink frequency band location) for the slots that are to be used for downlink and indicate an uplink frequency location (e.g., an uplink frequency band location) for the slots that are to be used for uplink.

In some aspects (e.g., when the UE <NUM> is operating in the HD-FDD mode), the UE <NUM> may monitor (e.g., may be configured to monitor) a PDCCH monitoring occasion for frequency domain DCI only if a time domain SFI, of a time domain DCI previously received by the UE <NUM>, indicates a time domain configuration with an FD slot. In this case, the time domain DCI may indicate (e.g., according to an indicated time domain configuration) one or more FD slots, and the UE <NUM> may determine that the indicated FD slot(s) are to be used for HD-FDD. Moreover, the frequency domain DCI may indicate (e.g., according to a frequency domain configuration) the FD slots (e.g., that are to be used for HD-FDD) that are to be used for uplink communication or for downlink communication.

In some aspects, the UE <NUM> may decode time domain DCI received by the UE <NUM>, and use the DCI position configuration for time domain DCI, to determine a time domain SFI of the plurality of time domain SFIs included in the time domain DCI. The UE <NUM> may determine a time domain configuration that is to be used based at least in part on the determined time domain SFI (e.g., the time domain SFI may map to a particular time domain configuration, as described above). In some aspects, the time domain configuration may indicate one or more FD slots.

In some aspects, time domain DCI and frequency domain DCI may have a time offset (e.g., periodicities of time domain DCI and frequency domain DCI may be according to the time offset) that enables decoding of the time domain DCI before frequency domain DCI is received. For example, a time offset between a PDCCH monitoring occasion for time domain DCI and a PDCCH monitoring occasion for frequency domain DCI may be greater than an amount of time needed for decoding the time domain DCI.

In this way, the UE <NUM> may determine, before a PDCCH monitoring occasion for frequency domain DCI, whether a time domain SFI of the time domain DCI indicates an FD slot, and may monitor the PDCCH monitoring occasion for frequency domain DCI based at least in part on whether the time domain SFI indicates the FD slot. For example, the UE <NUM> may skip the PDCCH monitoring occasion for frequency domain DCI if a previous time domain SFI does not indicate an FD slot, thereby conserving network resources, UE processing resources, and/or the like. Thus, if a time domain SFI of a time domain DCI does not indicate an FD slot, then the UE <NUM> may skip PDCCH monitoring occasions for frequency domain DCI until the UE <NUM> receives a time domain SFI that indicates an FD slot. Alternatively, if the UE <NUM> successfully decodes a time domain DCI that indicates a time domain SFI indicating an FD slot, then the UE <NUM> may monitor the following PDCCH monitoring occasion for frequency domain DCI (e.g., in order to determine the frequency domain configuration for the FD slot).

In some aspects, the UE <NUM> may decode the frequency domain DCI received by the UE <NUM>, and use the DCI position configuration for frequency domain DCI, to determine a frequency domain SFI of the plurality of frequency domain SFIs included in the frequency domain DCI. The UE <NUM> may determine an FD frequency domain configuration that is to be used based at least in part on the determined frequency domain SFI (e.g., the frequency domain SFI may map to a particular FD frequency domain configuration, as described above). The FD frequency domain configuration may be associated with (e.g., used for) one or more FD slots indicated by the time domain configuration, as described above.

In some aspects, decoding of the frequency domain DCI at the UE <NUM> may fail. In particular, a time domain SFI may indicate at least one FD slot, but the UE <NUM> may be unable to determine a frequency domain configuration for the FD slot(s) due to a failure to decode the frequency domain DCI. In some aspects (e.g., when the UE <NUM> fails to decode the frequency domain DCI), the UE <NUM> may determine that an FD slot is to be used for HD communication (e.g., the FD slot is to be an HD slot) according to a fixed communication indication (e.g., a fixed communication indication configured for the UE <NUM>). For example, the UE <NUM> may determine that the FD slot is to be a downlink slot (e.g., all downlink symbols), an uplink slot (e.g., all uplink symbols), or a flexible slot (e.g., all flexible symbols, that can be used for downlink or uplink).

In some aspects (e.g., when the UE <NUM> fails to decode the frequency domain DCI), the UE <NUM> may determine that an FD slot is to use a default (e.g., preconfigured) FD frequency domain configuration. For example, the default FD frequency domain configuration may be RRC configured for the UE <NUM>. In some aspects (e.g., when the UE <NUM> fails to decode the frequency domain DCI), the UE <NUM> may determine that an FD slot is to use an FD frequency domain configuration indicated by a previous frequency domain DCI received by the UE <NUM> (e.g., the most-recent frequency domain DCI successfully decoded by the UE <NUM>).

In some aspects, the UE <NUM> may transmit, and the base station <NUM> may receive, an indication that decoding of the frequency domain DCI has failed. For example, the UE <NUM> may transmit the indication in connection with one of the above techniques that may be used when decoding of the frequency domain DCI fails.

As shown by reference number <NUM>, the base station <NUM> and the UE <NUM> may communicate based at least in part on the DCI received by the UE <NUM>. As described above, the UE <NUM> may determine a time domain configuration for one or more slots based at least in part on a time domain SFI indicated in the time domain DCI. In some aspects, the time domain configuration may indicate one or more FD slots. As described above, the UE <NUM> may determine an FD frequency domain configuration (e.g., locations of one or more uplink frequency bands and one or more downlink frequency bands) for the one or more FD slots based at least in part on a frequency domain SFI indicated in the frequency domain DCI. In this way, DCI may be used to indicate a time domain slot format, which may indicate an FD slot, and a frequency domain slot format that is to be used for the FD slot.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a UE, in accordance with the present disclosure. Example process <NUM> is an example where the UE (e.g., UE <NUM> and/or the like) performs operations associated with DCI for frequency domain slot format indication.

As shown in <FIG>, in some aspects, process <NUM> may include receiving, from a base station, DCI that includes a plurality of frequency domain SFIs (block <NUM>). For example, the UE (e.g., using antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, and/or the like) may receive, from a base station, DCI that includes a plurality of frequency domain SFIs, as described above, for example, with reference to <FIG>.

As further shown in <FIG>, in some aspects, process <NUM> may include communicating with the base station based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs (block <NUM>). For example, the UE (e.g., using antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, and/or the like) may communicate with the base station based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs, as described above, for example, with reference to <FIG>.

In a first aspect, the frequency domain SFI is to be used for one or more full duplex slots indicated by a time domain SFI.

In a second aspect, alone or in combination with the first aspect, the DCI is associated with a different RNTI than an RNTI associated with another DCI that includes time domain SFIs.

In a third aspect, alone or in combination with one or more of the first and second aspects, process <NUM> includes receiving information that indicates a position in the DCI associated with the frequency domain SFI of the plurality of frequency domain SFIs.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, the frequency domain SFI indicates a particular full duplex frequency domain configuration, of a plurality of full duplex frequency domain configurations, configured for the UE.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the DCI is associated with a different periodicity than a periodicity associated with another DCI that includes time domain SFIs.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the DCI is associated with a same periodicity as a periodicity associated with another DCI that includes time domain SFIs.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the DCI is associated with a different set of PDCCH monitoring occasions than a set of PDCCH monitoring occasions associated with another DCI that includes time domain SFIs.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the DCI is associated with a set of PDCCH monitoring occasions that are offset in at least one of time or frequency relative to a set of PDCCH monitoring occasions associated with another DCI that includes time domain SFIs.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the DCI is associated with a same set of PDCCH monitoring occasions as a set of PDCCH monitoring occasions associated with another DCI that includes time domain SFIs.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, a time offset between a first PDCCH monitoring occasion for another DCI that includes time domain SFIs, and a second PDCCH monitoring occasion for the DCI, is greater than a time for decoding the other DCI.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, process <NUM> includes receiving another DCI that includes a plurality of time domain SFIs, and communicating with the base station is further based at least in part on a time domain SFI of the plurality of time domain SFIs.

In a twelfth aspect, which is in accordance with the present invention, alone or in combination with one or more of the first through eleventh aspects, the DCI is received in a PDCCH monitoring occasion that is monitored by the UE only when a time domain SFI, previously received by the UE, indicates a full duplex slot.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, one or more slots, indicated for full duplex communication by a time domain SFI, are to use a half duplex frequency domain configuration when decoding of the DCI at the UE fails.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, one or more slots, indicated for full duplex communication by a time domain SFI, are to use a default full duplex frequency domain configuration when decoding of the DCI at the UE fails.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, one or more slots, indicated for full duplex communication by a time domain SFI, are to use a full duplex frequency domain configuration indicated by a previous DCI when decoding of the DCI at the UE fails.

In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, process <NUM> includes transmitting an indication that decoding of the DCI at the UE has failed.

In a seventeenth aspect, alone or in combination with one or more of the first through sixteenth aspects, when the UE is operating in a half duplex frequency division duplexing mode, the DCI is received in a PDCCH monitoring occasion that is monitored by the UE regardless of whether a time domain SFI, previously received by the UE, indicates a full duplex slot.

In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, when the UE is operating in a half duplex frequency division duplexing mode, the DCI is received in a PDCCH monitoring occasion that is monitored by the UE only when a time domain SFI, previously received by the UE, indicates a full duplex slot.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a base station, in accordance with the present disclosure. Example process <NUM> is an example where the base station (e.g., base station <NUM> and/or the like) performs operations associated with DCI for frequency domain slot format indication.

As shown in <FIG>, in some aspects, process <NUM> may include transmitting, to a UE, DCI that includes a plurality of frequency domain SFIs (block <NUM>). For example, the base station (e.g., using controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, and/or the like) may transmit, to a UE, DCI that includes a plurality of frequency domain SFIs, as described above, for example, with reference to <FIG>.

As further shown in <FIG>, in some aspects, process <NUM> may include communicating with the UE based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs (block <NUM>). For example, the base station (e.g., using controller/processor <NUM>, transmit processor <NUM>, TX MIMO processor <NUM>, MOD <NUM>, antenna <NUM>, DEMOD <NUM>, MIMO detector <NUM>, receive processor <NUM>, and/or the like) may communicate with the UE based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs, as described above, for example, with reference to <FIG>.

In a first aspect, the frequency domain SFI is to be used by the UE for one or more full duplex slots indicated by a time domain SFI.

In a third aspect, alone or in combination with one or more of the first and second aspects, process <NUM> includes transmitting information that indicates a position in the DCI associated with the frequency domain SFI of the plurality of frequency domain SFIs.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, process <NUM> includes transmitting another DCI that includes a plurality of time domain SFIs, and communicating with the UE is further based at least in part on a time domain SFI of the plurality of time domain SFIs.

In a twelfth aspect, which is in accordance with the present invention, alone or in combination with one or more of the first through eleventh aspects, the DCI is transmitted in a PDCCH monitoring occasion that is monitored by the UE only when a time domain SFI, previously received by the UE, indicates a full duplex slot.

In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, process <NUM> includes receiving an indication that decoding of the DCI at the UE has failed.

In a seventeenth aspect, alone or in combination with one or more of the first through sixteenth aspects, when the UE is operating in a half duplex frequency division duplexing mode, the DCI is transmitted in a PDCCH monitoring occasion that is monitored by the UE regardless of whether a time domain SFI, previously received by the UE, indicates a full duplex slot.

In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, when the UE is operating in a half duplex frequency division duplexing mode, the DCI is transmitted in a PDCCH monitoring occasion that is monitored by the UE only when a time domain SFI, previously received by the UE, indicates a full duplex slot.

Claim 1:
A user equipment, UE, (<NUM>) for wireless communication, comprising:
a memory;
a transceiver; and
one or more processors, coupled to the memory, configured to:
receive, from a base station (<NUM>), via the transceiver, downlink control information, DCI, that includes a plurality of frequency domain slot format indications, SFIs;
wherein the DCI is received in a physical downlink control channel monitoring occasion that is monitored by the UE (<NUM>) only when a time domain SFI, previously received by the UE (<NUM>), indicates a full duplex slot; and
communicate, via the transceiver, with the base station (<NUM>) based at least in part on a frequency domain SFI of the plurality of frequency domain SFIs.