Patent Description:
Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for indicating a signal to noise ratio for downlink communication.

<CIT> involves determining a capability of an UE for at least one modulation order associated with a first transmission time interval (TTI) and a second TTI that is shorter than the first TTI, transmitting a UE capability message based on determining the UE capability, receiving a message including a parameter and a modulation coding scheme (MCS) index based on the UE capability message, and selecting a modulation table for communicating, to a base station, a transmission associated with the first TTI and the second TTI.

The invention is defined by its independent claims.

Preferred embodiments are stipulated by dependent claims.

In some aspects, a method of wireless communication, performed by a user equipment (UE), may include receiving, from a base station and in a first slot, an indication of a signal to noise ratio (SNR) mode, of a plurality of SNR modes, to be used by the UE for one or more downlink communications in one or more slots that occur after the first slot, wherein different SNR modes of the plurality of SNR modes support at least one of different modulation and coding schemes, different ranks, or a combination thereof; and operating using the SNR mode in the one or more slots based at least in part on the indication.

In some aspects, a method of wireless communication, performed by a base station, may include determining a modulation and coding scheme (MCS) and a rank to be used for one or more downlink communications in one or more slots; determining a SNR mode, of a plurality of SNR modes, to be indicated to a UE for the one or more downlink communications in the one or more slots based at least in part on at least one of the MCS, the rank, or a combination thereof; and transmitting, to the UE, an indication of the SNR mode.

In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to receive, from a base station and in a first slot, an indication of a SNR mode, of a plurality of SNR modes, to be used by the UE for one or more downlink communications in one or more slots that occur after the first slot, wherein different SNR modes of the plurality of SNR modes support at least one of different modulation and coding schemes, different ranks, or a combination thereof; and operate using the SNR mode in the one or more slots based at least in part on the indication.

In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to determine an MCS and a rank to be used for one or more downlink communications in one or more slots; determine a SNR mode, of a plurality of SNR modes, to be indicated to a UE for the one or more downlink communications in the one or more slots based at least in part on at least one of the MCS, the rank, or a combination thereof; and transmit, to the UE, an indication of the SNR mode.

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 and in a first slot, an indication of a SNR mode, of a plurality of SNR modes, to be used by the UE for one or more downlink communications in one or more slots that occur after the first slot, wherein different SNR modes of the plurality of SNR modes support at least one of different modulation and coding schemes, different ranks, or a combination thereof; and operate using the SNR mode in the one or more slots based at least in part on the indication.

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 determine an MCS and a rank to be used for one or more downlink communications in one or more slots; determine a SNR mode, of a plurality of SNR modes, to be indicated to a UE for the one or more downlink communications in the one or more slots based at least in part on at least one of the MCS, the rank, or a combination thereof; and transmit, to the UE, an indication of the SNR mode.

In some aspects, an apparatus for wireless communication may include means for receiving, from a base station and in a first slot, an indication of a SNR mode, of a plurality of SNR modes, to be used by the apparatus for one or more downlink communications in one or more slots that occur after the first slot, wherein different SNR modes of the plurality of SNR modes support at least one of different modulation and coding schemes, different ranks, or a combination thereof; and means for operating using the SNR mode in the one or more slots based at least in part on the indication.

In some aspects, an apparatus for wireless communication may include means for determining an MCS and a rank to be used for one or more downlink communications in one or more slots; means for determining a SNR mode, of a plurality of SNR modes, to be indicated to a UE for the one or more downlink communications in the one or more slots based at least in part on at least one of the MCS, the rank, or a combination thereof; and means for transmitting, to the UE, an indication of the SNR mode.

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 indicating a signal to noise ratio (SNR) for downlink communication, 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, from a base station and in a first slot, an indication of a signal to noise ratio (SNR) mode, of a plurality of SNR modes, to be used by the UE for one or more downlink communications in one or more slots that occur after the first slot, wherein different SNR modes of the plurality of SNR modes support at least one of different modulation and coding schemes, different ranks, or a combination thereof, means for operating using the SNR mode in the one or more slots based at least in part on the indication, 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 determining a modulation and coding scheme (MCS) and a rank to be used for one or more downlink communications in one or more slots, means for determining a signal to noise ratio (SNR) mode, of a plurality of SNR modes, to be indicated to a user equipment (UE) for the one or more downlink communications in the one or more slots based at least in part on at least one of the MCS, the rank, or a combination thereof, means for transmitting, to the UE, an indication of the SNR mode, 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> is a diagram illustrating an example <NUM> of a downlink communication, in accordance with the present disclosure.

As shown in <FIG>, a time domain component of a downlink communication may include a number of consecutive slots (shown as "slot <NUM>," "slot <NUM>," "slot <NUM>," and "slot <NUM>"). Each slot may include a physical downlink control channel (PDCCH) for transmitting control information and a physical downlink shared channel (PDSCH) for transmitting data.

For example, as shown, slot <NUM> may include a first PDCCH <NUM> carrying downlink control information (DCI) <NUM> and a first PDSCH <NUM> carrying data <NUM>. Slot <NUM> may include a second PDCCH <NUM> carrying DCI <NUM> and a second PDSCH <NUM> carrying data <NUM>. Slot <NUM>, slot <NUM>, and/or the like, may be similarly configured. The DCI <NUM> may schedule the transmission of the data <NUM> in the first PDSCH <NUM>, and may include an indication <NUM> of a modulation and coding scheme (MCS), a MIMO rank, and/or the like, corresponding to the first PDSCH <NUM>. Similarly, the DCI <NUM> may schedule the transmission of the data <NUM> in the second PDSCH <NUM>, and may include an indication <NUM> of an MCS, a MIMO rank, and/or the like, corresponding to the second PDSCH <NUM>.

A UE may be configured with hardware components and/or software processes that support enhanced communications capabilities, such as greater sampling rates and greater numbers of component carriers. For example, the UE <NUM> may include hardware components of a receive chain and be configured with processes that support downlink communications in portions of the radio frequency spectrum exceeding several GHz (e.g., millimeter wave (mmW) transmissions in <NUM> or NR, which may be communicated at a frequency of <NUM> or higher), with a relatively high degree of accuracy and granularity.

Although the power consumption per bit in mmW cellular is smaller than that of <NUM>-NR SUB6 or LTE, the bandwidths in mmW deployments may be approximately <NUM> to <NUM> times larger than those of <NUM>-NR SUB6 or LTE, and therefore the total power consumption may be significantly larger. In a typical mmW <NUM>-NR case, the modulation and coding scheme (MCS) and rank combination is the same for all carrier waves in a slot. The first one or more symbols may contain only physical downlink control channel (PDCCH) transmissions. The required SNR for decoding PDCCH is low (e.g., less than <NUM> dB), as is the required SNR for decoding nearly <NUM>% of communications, since the UE <NUM> is in the cell edge in many cases. However, to decode some downlink communications, SNRs of up to <NUM> dB may be required. This high SNR operation may be achieved using power-intensive hardware.

To facilitate power savings, the UE <NUM> may be configured to operate in two or more different SNR modes, in which different hardware configurations are used for decoding data based at least in part on the required SNR for decoding the data, which is based at least in part on an associated MCS and/or rank. As indicated above, the MCS and rank information (from which SNR requirements can be determined) for each slot is contained in the DCI of that slot.

Thus, an adaptive solution in which a UE <NUM> switches to a different SNR mode based on information about the slot is not useful, as changing the SNR mode requires activating or deactivating hardware components, which takes time. For example, if the UE <NUM> determines an appropriate SNR mode based on the indication <NUM> associated with the data <NUM>, the UE <NUM> will have already started (and maybe completed) decoding the data <NUM> before the UE <NUM> has completely transitioned to the appropriate SNR mode. Moreover, switching to a different SNR mode in the middle of the slot may be risky due to long transition effects that may add nonlinear performance degradation.

According to various aspects described herein, a BS <NUM> may provide an indication of an SNR mode to be used for downlink communications in one or more slots after a current slot, thereby giving the UE <NUM> time to activate an appropriate SNR mode, thereby enabling power savings where appropriate (e.g., using lower SNR modes), and preserving communication efficiency by selectively enabling higher SNR modes, which facilitate more accurate decoding. Some aspects of the signaling for indicating SNR mode described herein may enable these power savings without increasing transmission overhead.

<FIG> is a diagram illustrating an example <NUM> of indicating an SNR for downlink communication, in accordance with the present disclosure. As shown in <FIG>, a BS <NUM> and a UE <NUM> may communicate with one another.

As shown by reference number <NUM>, the BS <NUM> may transmit, and the UE <NUM> may receive, an indication of an SNR mode of a plurality of SNR modes. The indication may be transmitted in a first slot <NUM> and may indicate the SNR mode to be used by the UE <NUM> for one or more downlink communications in one or more slots (e.g., slot n <NUM>, slot n+<NUM><NUM>, and/or the like) that occur after the first slot <NUM>. In this way, the UE <NUM> may have time to transition to the indicated SNR mode before decoding the communication to which the SNR mode applies.

The SNR mode may include an operating mode that the UE <NUM> uses in decoding a transmission. An indication of an SNR mode may indicate a specified SNR, a specified range of SNR, and/or the like, to be used for decoding downlink communications. In this way, different SNR modes of the plurality of SNR modes support at least one of different MCSs, different ranks, and/or the like. The BS <NUM> may determine an MCS and a rank to be used for one or more downlink communications in one or more slots (e.g., slot n <NUM>, slot n+<NUM>, and/or the like) and determine the SNR mode based at least in part on at least one of the MCS, the rank, or a combination thereof.

In some aspects, the plurality of SNR modes may include two SNR modes - a low SNR mode and a high SNR mode. For example, a low SNR mode may correspond to less than <NUM> decibels (dB) and a high SNR mode may correspond to greater than <NUM> dB. In some aspects, the plurality of SNR modes may include three or more SNR modes, each corresponding to an SNR range. For example, the plurality of SNR modes may include four SNR modes. A first SNR mode may correspond to a range of <NUM> - <NUM> dB, a second SNR mode may correspond to a range of <NUM> - <NUM> dB, a third SNR mode may correspond to a range of <NUM> - <NUM> dB, and a fourth SNR mode may correspond to greater than <NUM> dB. In some aspects, any number of different SNR modes may be used, depending on the hardware capabilities of the UE <NUM>.

In some aspects, as shown in <FIG>, the indication of the SNR mode to be used by the UE <NUM> is included in downlink control information (DCI) <NUM>. For example, as shown, the indication of the SNR mode may include a single bit <NUM> in the DCI <NUM> of the first slot <NUM>. The bit <NUM> may indicate a first SNR mode (e.g., by using a value of "<NUM>") or a second SNR mode (e.g., by using a value of "<NUM>"). The indicated SNR mode may correspond to downlink communications <NUM> in slot n <NUM>, downlink communications <NUM> in slot n+<NUM><NUM>, and/or the like.

In some aspects, the indication of the SNR mode to be used by the UE <NUM> for the one or more downlink communications in the one or more slots may include multiple bits in the DCI <NUM> that indicates the SNR mode from more than two SNR modes. The indication of the SNR mode may include a specific field pattern of the DCI <NUM>. For example, the SNR mode may be indicated using a PDCCH order that includes a specified field pattern of a DCI Format 1_0. In some aspects, the indication of the SNR mode may indicate the one or more slots for which the SNR mode is to be used.

In some aspects, the indication of the SNR mode may include an indication that the SNR mode is a higher SNR mode than an SNR mode that is active for the UE <NUM> in the first slot <NUM>. That is, for example, the BS <NUM> may transmit an indication that an upcoming slot or slots (e.g., slot n <NUM>, slot n+<NUM><NUM>, and/or the like) may require a higher SNR mode than the first slot <NUM> requires. The higher SNR mode may be indicated based at least in part on DCI <NUM> including a slot offset parameter, K<NUM>, with a value that satisfies a threshold (e.g., K<NUM> > <NUM>). The slot offset parameter, K<NUM>, may indicate an amount of time between the DCI <NUM> and a communication (e.g., the downlink communication <NUM>, the downlink communication <NUM>, and/or the like) scheduled by the DCI <NUM>. The communication scheduled by the DCI <NUM> may be transmitted via PDSCH, power control subchannel (PCSCH), and/or the like.

As shown by reference number <NUM>, the UE <NUM> may operate using the indicated SNR mode in the one or more slots (e.g., slot n <NUM>, slot n+<NUM><NUM>, and/or the like) based at least in part on the indication. The UE <NUM> may be configured to operate in the SNR mode until a new indication of a different SNR mode is received, for a duration (e.g., number of slots) specified by the indication, and/or the like.

In some aspects, a low SNR mode may refer to an operating mode in which any number of power optimizations may be applied. The power optimizations may include, for example, reducing an effective number of bits that an analog-to-digital converter (ADC) may use, corresponding to an effective resolution of the ADC, and/or reducing a number of bits used through the overall receive chain (e.g., ignoring or "zeroing out" one or more least significant bits (LSBs) of a received number of bits per data packet). In some aspects, power optimizations may include deactivating or modifying operation of a synthesizer (e.g., reducing an amount of power to the synthesizer, or effectively turning off the synthesizer), reduce the power driving a low-noise amplifier (LNA), reduce a power to a signal from an oscillator to be combined with a received signal at a mixer, and/or other like operations that may introduce additional phase and/or thermal noise into the received signal. In some aspects, power optimizations may include reducing an amount of power to an anti-aliasing filter, which may, for example, deactivate or diminish the function of one more of the filtering elements of the anti-aliasing filter. In some aspects, the power optimizations may include using a linear minimum mean square error (LMMSE) mapper instead of a maximum likelihood (ML) mapper, using a 2D linear interpolation channel estimation (chEst: <NUM>), and/or the like.

Some aspects of the SNR indication techniques described above may enable a UE <NUM> to activate a low SNR mode when a lower SNR is required for decoding transmissions, thereby facilitating power savings. Some aspects of the SNR indication techniques described above also enable a BS <NUM> to provide an indication of an SNR mode for upcoming slots so that the UE <NUM> may have time to transition to the indicated SNR mode before decoding the communications in the slots. Some aspects of the signaling for indicating SNR mode described herein may enable these power savings without increasing transmission overhead. A number of different SNR modes may be used to increase the efficiency of operations by enabling a more granular correlation between SNR mode and MCS and/or rank.

<FIG> is a diagram illustrating another example <NUM> of indicating an SNR for downlink communication, in accordance with the present disclosure. As shown in <FIG>, a BS <NUM> and a UE <NUM> may communicate with one another.

As shown by reference number <NUM>, the UE <NUM> may transmit, and the BS <NUM> may receive, a UE capability report that may include an indication that the UE <NUM> supports an SNR mode. In some aspects, the UE capability report may indicate one or more additional SNR modes, of the plurality of SNR modes, that the UE <NUM> supports. The UE capability report may indicate a number of bits that the BS <NUM> is to use to indicate the SNR mode. In some aspects, the number of bits that the BS <NUM> is to use to indicate the SNR mode may be indicated (and/or determined by the BS <NUM>) based at least in part on a number of supported SNR modes indicated in the UE capability report.

As shown by reference number <NUM>, the BS <NUM> may transmit, and the UE <NUM> may receive, an indication of a mapping between a set of bit values, for one or more bits used to indicate the SNR mode, and at least one of a corresponding set of SNR modes, a corresponding set of MCSs, a corresponding set of ranks, a corresponding set of combinations of MCSs and ranks, or a combination thereof. The indication of the mapping may be transmitted in a radio resource control (RRC) communication. In some aspects, the mapping may be specified according to a wireless communication standard.

As shown by reference number <NUM>, the BS <NUM> may determine an MCS and a rank to be used for one or more downlink communications in one or more slots. In some aspects, the BS <NUM> may determine an SNR mode, of a plurality of SNR modes, to be indicated to the UE <NUM> for the one or more downlink communications in the one or more slots. The SNR mode may be determined based at least in part on at least one of the MCS, the rank, or a combination thereof.

As shown by reference number <NUM>, the BS <NUM> may transmit, and the UE <NUM> may receive, DCI having one or more bit values of the set of bit values. The one or more bit values may indicate the SNR mode to be used by the UE <NUM> for the one or more downlink communications in the one or more slots. As shown by reference number <NUM>, the UE <NUM> may determine the SNR mode to be used based at least in part on the one or more bit values and the indication of the mapping of the bit values received from the BS <NUM>.

In this way, some aspects of the SNR indication techniques described above may enable a UE <NUM> to negotiate indication signaling with a BS <NUM> so that the BS <NUM> can provide an indication to the UE <NUM> to activate an appropriate SNR mode for upcoming downlink communications, thereby facilitating power savings. Some aspects of the signaling for indicating SNR mode described above may enable these power savings without increasing transmission overhead, e.g., by using a PDCCH field pattern, which does not require the addition of any bits to the DCI.

<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 indicating a signal to noise ratio for downlink communication.

As shown in <FIG>, in some aspects, process <NUM> may include receiving, from a base station and in a first slot, an indication of a signal to noise ratio (SNR) mode, of a plurality of SNR modes, to be used by the UE for one or more downlink communications in one or more slots that occur after the first slot, wherein different SNR modes of the plurality of SNR modes support at least one of different modulation and coding schemes, different ranks, or a combination thereof (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive, from a base station and in a first slot, an indication of a signal to noise ratio (SNR) mode, of a plurality of SNR modes, to be used by the UE for one or more downlink communications in one or more slots that occur after the first slot, as described above. In some aspects, different SNR modes of the plurality of SNR modes support at least one of different modulation and coding schemes, different ranks, or a combination thereof.

As further shown in <FIG>, in some aspects, process <NUM> may include operating using the SNR mode in the one or more slots based at least in part on the indication (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 operate using the SNR mode in the one or more slots based at least in part on the indication, as described above.

In a first aspect, process <NUM> includes transmitting, to the base station, a UE capability report that includes an indication that the UE supports the SNR mode.

In a second aspect, alone or in combination with the first aspect, the UE capability report indicates one or more additional SNR modes, of the plurality of SNR modes, that the UE supports.

In a third aspect, alone or in combination with one or more of the first and second aspects, the UE capability report indicates a number of bits that the base station is to use to indicate the SNR mode.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process <NUM> includes receiving, from the base station, an indication of a mapping between a set of bit values, for one or more bits used to indicate the SNR mode, and at least one of: a corresponding is setting of SNR modes, a corresponding is setting of modulation and coding schemes, a corresponding is setting of ranks, a corresponding is setting of combinations of modulation and coding scheme and rank, or a combination thereof.

In a fifth aspect, alone or in combination with the fourth aspect, the indication of the SNR mode to be used by the UE for the one or more downlink communications in the one or more slots comprises one or more bit values of the set of bit values.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the indication of the SNR mode to be used by the UE for the one or more downlink communications in the one or more slots is included in downlink control information (DCI).

In a seventh aspect, alone or in combination with the sixth aspect, the indication of the SNR mode to be used by the UE for the one or more downlink communications in the one or more slots is a single bit in the DCI that indicates a first SNR mode or a second SNR mode.

In an eighth aspect, alone or in combination with the sixth aspect, the indication of the SNR mode to be used by the UE for the one or more downlink communications in the one or more slots includes multiple bits in the DCI that indicates the SNR mode from more than two SNR modes.

In a ninth aspect, alone or in combination with one or more of the sixth or eighth aspects, the indication of the SNR mode to be used by the UE for the one or more downlink communications in the one or more slots comprises a specific field pattern of the DCI.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the indication of the SNR mode to be used by the UE for the one or more downlink communications in the one or more slots indicates the one or more slots.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the indication of the SNR mode to be used by the UE for the one or more downlink communications in the one or more slots comprises an indication that the SNR mode is a higher SNR mode than an SNR mode that is active for the UE in the first slot.

In a twelfth aspect, alone or in combination with the eleventh aspect, the higher SNR mode is indicated based at least in part on downlink control information (DCI) including a slot offset parameter with a value greater than a threshold, the slot offset parameter indicates an amount of time between the DCI and a communication scheduled by the DCI.

<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 indicating a signal to noise ratio for downlink communication.

As shown in <FIG>, in some aspects, process <NUM> may include determining a modulation and coding scheme (MCS) and a rank to be used for one or more downlink communications in one or more slots (block <NUM>). For example, the base station (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may determine a modulation and coding scheme (MCS) and a rank to be used for one or more downlink communications in one or more slots, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include determining a signal to noise ratio (SNR) mode, of a plurality of SNR modes, to be indicated to a UE for the one or more downlink communications in the one or more slots based at least in part on at least one of the MCS, the rank, or a combination thereof (block <NUM>). For example, the base station (e.g., using transmit processor <NUM>, receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may determine a signal to noise ratio (SNR) mode, of a plurality of SNR modes, to be indicated to a UE for the one or more downlink communications in the one or more slots based at least in part on at least one of the MCS, the rank, or a combination thereof, as described above.

As further shown in <FIG>, in some aspects, process <NUM> may include transmitting, to the UE, an indication of the SNR mode (block <NUM>). For example, the base station (e.g., using transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit, to the UE, an indication of the SNR mode, as described above.

In a first aspect, process <NUM> includes receiving, from the UE, a UE capability report that includes an indication that the UE supports the SNR mode.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process <NUM> includes transmitting, to the UE, an indication of a mapping between a set of bit values, for one or more bits used to indicate the SNR mode, and at least one of: a corresponding is setting of SNR modes, a corresponding is setting of modulation and coding schemes, a corresponding is setting of ranks, a corresponding is setting of combinations of modulation and coding scheme and rank, or a combination thereof.

Even though particular combinations of features are disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects, which are solely defined by the appended claims.

Claim 1:
A user equipment, UE (<NUM>) for wireless communication, comprising:
means for receiving, from a base station (<NUM>) and in a first slot, an indication of a signal to noise ratio, SNR, mode, of a plurality of SNR modes, to be used by the UE (<NUM>) for one or more downlink communications in one or more slots that occur after the first slot, wherein different SNR modes of the plurality of SNR modes support at least one of different modulation and coding schemes, different ranks, or a combination thereof, and wherein the indication of the SNR mode to be used by the UE (<NUM>) for the one or more downlink communications in the one or more slots is included in downlink control information, DCI, of the first slot, and wherein the DCI includes a slot offset parameter that indicates an amount of time between the DCI and the one or more downlink communications for which the SNR mode is to be used; and
means for operating using the SNR mode in the one or more slots based at least in part on the indication.