DEMODULATION REFERENCE SIGNAL BUNDLING WITH ANTENNA SWITCHING

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling. The UE may calculate, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration. The UE may calculate an adjusted quantity of nominal time domain windows and may identify a plurality of actual time domain windows. Numerous other aspects are described.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for demodulation reference signal bundling with antenna switching.

BACKGROUND

SUMMARY

Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include identifying a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling. The method may include calculating, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration. The method may include calculating an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration. The method may include identifying a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows. The method may include transmitting, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling.

Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include identifying a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling. The method may include calculating, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled. The method may include identifying a plurality of actual time domain windows. The method may include transmitting, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling.

Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include identifying an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity. The method may include transmitting, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling.

Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to identify a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling. The one or more processors may be configured to calculate, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration. The one or more processors may be configured to calculate an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration. The one or more processors may be configured to identify a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows. The one or more processors may be configured to transmit, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling.

Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to identify a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling. The one or more processors may be configured to calculate, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled. The one or more processors may be configured to identify a plurality of actual time domain windows. The one or more processors may be configured to transmit, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling.

Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to identify an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity. The one or more processors may be configured to transmit, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling.

Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to identify a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling. The set of instructions, when executed by one or more processors of the UE, may cause the UE to calculate, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration. The set of instructions, when executed by one or more processors of the UE, may cause the UE to calculate an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration. The set of instructions, when executed by one or more processors of the UE, may cause the UE to identify a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows. The set of instructions, when executed by one or more processors of the UE, may cause the UE to transmit, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling.

Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to identify a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling. The set of instructions, when executed by one or more processors of the UE, may cause the UE to calculate, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled. The set of instructions, when executed by one or more processors of the UE, may cause the UE to identify a plurality of actual time domain windows. The set of instructions, when executed by one or more processors of the UE, may cause the UE to transmit, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling.

Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to identify an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity. The set of instructions, when executed by one or more processors of the UE, may cause the UE to transmit, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for identifying a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling. The apparatus may include means for calculating, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration. The apparatus may include means for calculating an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration. The apparatus may include means for identifying a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows. The apparatus may include means for transmitting, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for identifying a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling. The apparatus may include means for calculating, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled. The apparatus may include means for identifying a plurality of actual time domain windows. The apparatus may include means for transmitting, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for identifying an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity. The apparatus may include means for transmitting, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling.

DETAILED DESCRIPTION

A demodulation reference signal (DMRS) may carry information that is used to estimate a radio channel for demodulation of an associated physical channel. The design and mapping of the DMRS may be specific to the physical channel for which the DMRS is used for estimation. DMRSs may be used for uplink communications (such as communications from the UE to a network node) and/or for downlink communications (such as communications from the network node to the UE). In the example where the DMRS is used for uplink communications, the DMRS may be transmitted by the UE via a physical uplink shared channel (PUSCH) and/or a physical uplink control channel (PUCCH). In some cases, DMRS bundling may be used to improve an accuracy of DMRS reception and channel estimation. For example, DMRS bundling may improve channel estimation performance when a communication is transmitted over multiple slots (for example, due to an amount of data included in the communication) and via the same channel. DMRS bundling may apply to a PUSCH/PUCCH transmission with multi-slot repetitions, and/or may apply to a single transport block (TB) multi-slot PUSCH transmission. This may enable the network node to use the DMRSs from each of the slots that include the communication (or a respective portion of the communication) for performing a channel estimation, which may improve an accuracy of the channel estimation by the network node. In some cases, the UE may perform antenna switching to improve a transmission performance by the UE. For example, a UE that is transmitting via a first antenna may determine that transmitting via a second antenna may improve transmission performance for example, via an increased diversity gain), and the UE may switch from transmitting via the first antenna to transmitting via the second antenna accordingly. In some cases, the UE may perform the antenna switching during a transmission that uses DMRS bundling. This may result in improper channel estimation by the network node due, for example, to changes to the channel conditions resulting from the antenna switch.

Various aspects relate generally to wireless communications. Some aspects more specifically relate to DMRS bundling with antenna switching. A UE may identify a nominal time domain window (TDW) duration and a quantity of nominal TDWs for DMRS bundling. In some aspects, the UE may calculate, in accordance with the quantity of nominal TDWs being a single nominal TDW, and in accordance with an indication that antenna switching is enabled, an adjusted nominal TDW duration in accordance with applying a parameter to the nominal TDW duration, and may calculate an adjusted quantity of nominal TDWs in accordance with the adjusted nominal TDW duration. In some examples, the parameter may be an integer. For example, the parameter may be an integer having a value of two. In some other aspects, the UE may calculate, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal TDWs being equal to a single nominal TDW and in accordance with an indication that antenna switching is enabled. The UE may identify a plurality of actual TDWs, for example, in accordance with the adjusted nominal TDW duration or the other antenna switching location, and may transmit, to a network node, using the plurality of actual TDWs, a communication using DMRS bundling. In some aspects, the UE may identify an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity. In some examples, the event may be an antenna switching event. In some other examples, the event may be associated with a restart of a physical uplink shared channel window enabled condition or a physical uplink control channel window enabled condition. The UE may transmit, to the network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using DMRS bundling.

Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, by calculating an adjusted nominal time domain window duration and an adjusted quantity of nominal time domain windows, or by calculating another antenna switching event location, the described techniques can be used to enable DMRS bundling with antenna switching. Additionally, by calculating the adjusted nominal time domain window duration and the adjusted quantity of nominal time domain windows, or by calculating the other antenna switching event location, the described techniques can be used to maintain a power consistency and/or a phase continuity across communications that use DMRS bundling. These example advantages, among others, are described in more detail below.

In some aspects, the UE120may include a communication manager140. In some aspects, as described in more detail elsewhere herein, the communication manager140may identify a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling; calculate, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration; calculate an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration; identify a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows; and transmit, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling. In some other aspects, as described in more detail elsewhere herein, the communication manager140may identify a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling; calculate, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled; identify a plurality of actual time domain windows in accordance with the antenna switching event causing a change to at least one of a power consistence or a phase continuity; and transmit, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling. In some other aspects, as described in more detail elsewhere herein, the communication manager140may identify an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity; and transmit, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling. Additionally, or alternatively, the communication manager140may perform one or more other operations described herein.

In some aspects, the UE120includes means for identifying a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling; means for calculating, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration; means for calculating an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration; means for identifying a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows; and/or means for transmitting, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling. The means for the UE120to perform operations described herein may include, for example, one or more of communication manager140, antenna252, modem254, MIMO detector256, receive processor258, transmit processor264, TX MIMO processor266, controller/processor280, or memory282.

In some aspects, the UE120includes means for identifying a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling; means for calculating, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled; means for identifying a plurality of actual time domain windows in accordance with the antenna switching event causing a change to at least one of a power consistence or a phase continuity; and/or means for transmitting, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling. The means for the UE120to perform operations described herein may include, for example, one or more of communication manager140, antenna252, modem254, MIMO detector256, receive processor258, transmit processor264, TX MIMO processor266, controller/processor280, or memory282.

In some aspects, the UE120includes means for identifying an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity; and/or means for transmitting, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling. The means for the UE120to perform operations described herein may include, for example, one or more of communication manager140, antenna252, modem254, MIMO detector256, receive processor258, transmit processor264, TX MIMO processor266, controller/processor280, or memory282.

FIG.4is a diagram illustrating examples of demodulation reference signal bundling, in accordance with the present disclosure.

DMRS bundling may be used to improve an accuracy of DMRS reception and channel estimation. DMRS bundling may improve channel estimation performance when a communication is transmitted over multiple slots (for example, due to an amount of data included in the communication) and via the same channel. DMRS bundling may apply to a PUSCH/PUCCH transmission with multi-slot repetitions, and/or may apply to a single TB multi-slot PUSCH transmission. This may enable the network node to use the DMRSs from each of the slots that include the communication (or a respective portion of the communication) for performing a channel estimation, which may improve an accuracy of the channel estimation by the network node.

Antenna switching by the UE for uplink communications may provide a performance gain for the uplink communication. A transmission by the UE to a network node (such as a transmission by the UE to a non-terrestrial network (NTN) node) may be a PUSCH transmission with two DMRS bundling windows, where each DMRS bundling window has a duration of K slots. Performing an antenna switch between the first set of K slots and the second set of K slots (as shown in example400) may provide a performance gain (for example, a 1 decibel (dB) performance gain) compared to a PUSCH transmission that uses a single DMRS bundling window of 2K slots (as shown in example405).

In some aspects, a UE may determine a time domain window (TDW) for DMRS bundling in accordance with the following. The DMRS bundling may be associated with an uplink transmission by the UE having a duration that is indicated by a quantity of slots. In one example, the transmission by the UE may have a duration of seven slots.

In a first operation, the UE may determine a nominal TDW duration. In one example, as shown in example410, the UE may determine that the nominal TDW duration is three (e.g., the nominal TDW has a duration of three slots).

In a second operation, the UE may determine the nominal TDWs to be used for the DMRS bundling. In the example where the transmission by the UE has a duration of seven slots, and the nominal TDW duration is three, the UE may determine that a quantity of nominal TDWs is to be three nominal TDWs. As shown in example410, the UE may determine that the quantity of nominal TDWs is to include nominal TDW 1, nominal TDW 2, and nominal TDW 3. In some aspects, each of the nominal TDWs may have the same duration. In some other aspects, each of the nominal TDWs, except for the last nominal TDW (e.g., nominal TDW 3), may have the same duration. In some aspects, the UE may determine that a first DMRS bundling is to be used for a first nominal TDW (nominal TDW 1), a second DMRS bundling is to be used for the second nominal TDW (nominal TDW 2), and a third DMRS bundling is to be used for the third nominal TDW (nominal TDW 3).

In a third operation, the UE may determine the actual TDWs. The UE may determine the actual TDWs in accordance with the nominal TDW duration and/or the quantity of nominal TDWs. Additionally, the UE may determine the actual TDWs in accordance with an event. The event may correspond to any event that causes power consistency and/or phase continuity not to be maintained across a PUSCH/PUCCH transmission. In one example, the event may correspond to a PUSCH/PUCCH window restart (PUSCH (PUCCH)-window-restart) being enabled. In some aspects, the start of the first actual TDW may be the first symbol of the first PUSCH/PUCCH transmission in a slot determined for the PUSCH/PUCCH transmission within the nominal TDW. In some aspects, the end of the actual TDW may be the last symbol of the last PUSCH transmission in a slot determined for transmission of the PUSCH within the nominal TDW, for example, in accordance with the actual TDW reaching the end of the last PUCCH transmission within the nominal TDW. In some other aspects, the end of the actual TDW may be the last symbol of a PUSCH/PUCCH transmission before the event, in accordance with an event occurrence that causes power consistency and/or phase continuity not to be maintained across PUSCH/PUCCH transmissions of PUSCH/PUCCH repetition within the nominal TDW, and the PUSCH/PUCCH transmission is in a slot determined for transmission of the PUSCH/PUCCH. When a PUSCH (PUCCH)-Window-Restart is enabled, the start of a new actual TDW may be the first symbol of the PUSCH/PUCCH transmission after the event which causes the power consistency and/or phase continuity not to be maintained across the PUSCH/PUCCH transmissions of a PUCCH repetition within the nominal TDW, and the PUCCH transmission may be in a slot determined for transmission of the PUCCH. If an event occurs that causes power consistency and/or phase continuity not to be maintained, the actual TDW may end.

FIG.5is a diagram illustrating an example500of demodulation reference signal bundling with antenna switching, in accordance with the present disclosure.

As shown by reference number505, the UE120may transmit, and the network node110may receive, antenna switching capability information associated with the UE120. In some aspects, the network node110may transmit an indication that the UE120supports antenna switching (e.g., is configured to perform antenna switching and/or is capable of performing antenna switching). In some other aspects, the network node110may transmit an indication that the UE120does not support antenna switching (e.g., is not configured to perform antenna switching and/or is not capable of performing antenna switching). In some aspects, the antenna switching capability information may include an indication of an antenna switching gap duration. For example, the UE120may transmit, and the network node110may receive, antenna switching capability information that includes an indication of an antenna switching gap duration.

As shown by reference number510, the network node110may transmit, and the UE120may receive, an indication to enable antenna switching or an indication to disable antenna switching. For example, the network node110may transmit a transmission antenna switching (TxAntSwitching) configuration parameter that indicates for the UE120to enable antenna switching or disable antenna switching. In some aspects, the UE120may be configured with a default value that indicates for the UE120to enable antenna switching or that indicates for the UE120to disable antenna switching. The UE120may enable antenna switching or disable antenna switching in accordance with the default value and in accordance with not receiving an indication from the network node110associated with enabling antenna switching or disabling antenna switching.

As shown by reference number515, the UE120may identify a nominal TDW duration and a quantity of nominal TDWs for DMRS bundling. In some examples, the UE120may identify the nominal TDW duration as described in connection with the first operation of the example400, and may identify the quantity of nominal TDWs as described in connection with the second operation of example400.

As shown by reference number520, the UE120may calculate an adjusted nominal TDW duration. The UE120may calculate the adjusted nominal TDW duration in accordance with the quantity of nominal TDWs being equal to one. Additionally, or alternatively, the UE120may calculate the adjusted nominal TDW duration in accordance with an occurrence of an event, such as an antenna switching event, and/or in accordance with an indication that antenna switching is enabled. In some aspects, the UE120may calculate the adjusted nominal TDW duration in accordance with applying a parameter to the nominal TDW duration. In some examples, the parameter may be an integer. For example, the parameter may be an integer having a value of two. In some other aspects, the parameter may not be an integer, or may be an integer having a value that is different than the value of two. In some aspects, calculating the adjusted nominal TDW duration may include rounding the adjusted nominal TDW duration to a next largest integer. For example, the UE120may round the adjusted nominal TDW duration to a next largest integer in accordance with the adjusted nominal TDW duration not being equal to an integer. In one example, the nominal TDW duration may be seven, and the parameter may be two. In this case, calculating the adjusted nominal TDW duration may include dividing seven by two to obtain a value of three and a half, and rounding to the next largest integer to obtain a value of four. In another example, the nominal TDW duration may be six, and the parameter may be two. In this case, calculating the adjusted nominal TDW duration may include dividing six by two to obtain a value of three. The UE120may not need to round the adjusted TDW duration to a next largest integer in accordance with the adjusted TDW duration being equal to an integer (e.g., three). In some aspects, the UE120may calculate the adjusted nominal TDW duration as follows:

If the number of nominal TDW is equal to 1 and TxAntSwitching is enabled, let nominal_TDW_duration=[nominal_TDW_duration/2], where [x] is the immediate integer larger than or equal to x.

As shown by reference number525, the UE120may calculate an adjusted quantity of nominal TDWs. The UE120may calculate the adjusted quantity of nominal TDWs in accordance with the adjusted nominal TDW duration. In the example where the nominal TDW duration is equal to seven, the quantity of nominal TDWs is equal to one, and the adjusted nominal TDW duration is equal to four, the UE120may calculate an adjusted quantity of nominal TDWs that is equal to two. For example, the UE120may determine that the adjusted quantity of nominal TDWs is to be two TDWs, where each TDW of the two TDWs has a duration of four (e.g., four slots). Alternatively, the UE120may determine that the adjusted quantity of TDWs is to be two TDWs, where the first TDW of the two TDWs has a duration of four and the second TDW of the two TDWs has a duration of three.

As shown by reference number530, the UE120may identify a plurality of actual TDWs. The UE120may identify the plurality of actual TDWs in accordance with at least one of an amount of data to be transmitted, the adjusted nominal TDW duration, or the adjusted quantity of nominal TDWs. In some aspects, the UE120may identify the plurality of actual TDWs as described in connection with the third operation of the example400.

As shown by reference number535, the UE120may transmit, and the network node110may receive, a communication using DMRS bundling. For example, the UE120may transmit, and the network node110may receive, a communication using DMRS bundling and in accordance with the plurality of actual TDWs.

FIG.6is a diagram illustrating an example600of demodulation reference signal bundling with antenna switching, in accordance with the present disclosure.

As shown by reference number605, the UE120may transmit, and the network node110may receive, antenna switching capability information associated with the UE120. In some aspects, the network node110may transmit an indication that the UE120supports antenna switching (e.g., is configured to perform antenna switching and/or is capable of performing antenna switching). In some other aspects, the network node110may transmit an indication that the UE120does not support antenna switching (e.g., is not configured to perform antenna switching and/or is not capable of performing antenna switching). In some aspects, the antenna switching capability information may include an indication of an antenna switching gap duration. For example, the UE120may transmit, and the network node110may receive, antenna switching capability information that includes an indication of an antenna switching gap duration.

As shown by reference number610, the network node110may transmit, and the UE120may receive, an indication to enable antenna switching or an indication to disable antenna switching. For example, the network node110may transmit a transmission antenna switching (TxAntSwitching) configuration parameter that indicates for the UE120to enable antenna switching or disable antenna switching. In some aspects, the UE120may be configured with a default value that indicates for the UE120to enable antenna switching or that indicates for the UE120to disable antenna switching. The UE120may enable antenna switching or disable antenna switching in accordance with the default value and in accordance with not receiving an indication from the network node110associated with enabling antenna switching or disabling antenna switching.

As shown by reference number615, the UE120may identify a nominal TDW duration and a quantity of nominal TDWs for DMRS bundling. In some examples, the UE120may identify the nominal TDW duration as described in connection with the first operation of the example400, and may identify the quantity of nominal TDWs as described in connection with the second operation of example400.

As shown by reference number620, the UE120may calculate another antenna switching event location (e.g., an adjusted antenna switching event location). In some aspects, the UE120may identify an occurrence of an event. The event may be an antenna switching event. Alternatively, the event may be any event that causes a change to at least one of a power consistency or a phase continuity. Additional details regarding these features are described in connection withFIG.7. In some aspects, the antenna switching event may occur at an antenna switching event location. In the example where the nominal TDW duration is seven (e.g., seven slots), the antenna switching event may occur, for example, at the second slot (e.g., at an end of the second slot). The UE120may calculate the other antenna switching event location in accordance with detecting the occurrence of the antenna switching event. In some aspects, the UE120may calculate the other antenna switching event location in accordance with the quantity of nominal TDWs being equal to a single nominal TDW window. Additionally, or alternatively, the UE120may calculate the other antenna switching event location in accordance with an indication that antenna switching is enabled.

In some aspects, calculating the other antenna switching event location may include dividing a quantity of slots associated with a communication to be transmitted by the UE120to the network node110by a parameter, and setting the other antenna switching event location to a slot location that is equal to the quantity of slots associated with the communication divided by the parameter. In some examples, the parameter may be an integer. For example, the parameter may be an integer having a value of two. In some other aspects, the parameter may not be an integer, or may be an integer having a value that is different than the value of two. In some aspects, calculating the other antenna switching event location may include rounding the other antenna switching event location to a next largest integer. For example, the UE120may round the other antenna switching event location duration to a next slot number in accordance with the other antenna switching event location not being equal to an integer. In one example, the communication may span seven slots, and the parameter may be two. In this case, calculating the other antenna switching event location may include dividing seven by two to obtain a value of three and a half, and rounding to the next largest integer to obtain a value of four. Thus, the other antenna switching event location may occur at slot4(e.g., at an end of slot4). In another example, the communication may span six slots, and the parameter may be two. In this case, calculating the other antenna switching event location may include dividing six by two to obtain a value of three. Thus, the other antenna switching event location may occur at slot3(e.g., at an end of slot3). The UE120may not need to round the other antenna switching event location to a next largest slot number in accordance with the other antenna switching event location being equal to an integer. In some aspects, the UE120may calculate the other antenna switching event location as follows:

If the number of nominal TDW is equal to 1 and TxAntSwitching is enabled, set the Tx antenna event at the at the end of slot x, where x=[N/2] and N is the total transmission duration in slots.

As shown by reference number625, the UE120may identify a plurality of actual TDWs. The UE120may identify the plurality of actual TDWs, for example, as described in connection with the third operation of the example400.

As shown by reference number630, the UE120may transmit, and the network node110may receive, the communication. For example, the UE120may transmit, and the network node110may receive, the communication using DMRS bundling and in accordance with the plurality of actual TDWs.

FIG.7is a diagram illustrating an example700of event detection for demodulation reference signal bundling, in accordance with the present disclosure.

As shown by reference number705, the UE120may identify (e.g., detect) an occurrence of an event. The event may be any event that causes a change to at least one of a power consistency or a phase continuity. In some aspects, the event may be an antenna switching event. In some other aspects, the event may be associated with a restart of a physical uplink shared channel window enabled condition or associated with a physical uplink control channel window enabled condition (e.g., that indicates no additional signaling).

As shown by reference number710, the UE120may (optionally) calculate an adjusted nominal TDW duration and an adjusted quantity of nominal TDWs. For example, the UE120may calculate the adjusted nominal TDW duration and the adjusted quantity of nominal TDWs as described above in connection with reference numbers520and525ofFIG.5.

As shown by reference number715, the UE120may (optionally) calculate another event location (e.g., an adjusted event location). For example, the UE120may calculate another antenna switching event location (e.g., an adjusted antenna switching event location) as described above in connection with reference number620ofFIG.6.

As shown by reference number720, the UE120may (optionally) identify a plurality of actual TDWs. For example, the UE120may identify the plurality of actual TDWs as described in connection with the third operation of the example400.

As shown by reference number725, the UE120may transmit, and the network node110may receive, a communication using DMRS bundling. For example, the UE120may transmit the communication using DMRS bundling in accordance with identifying the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity.

FIG.8is a diagram illustrating an example process800performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure. Example process800is an example where the apparatus or the UE (e.g., UE120) performs operations associated with demodulation reference signal bundling.

As shown inFIG.8, in some aspects, process800may include identifying a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling (block810). For example, the UE (e.g., using communication manager1106, depicted inFIG.11) may a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling, as described above.

As further shown inFIG.8, in some aspects, process800may include calculating, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration (block820). For example, the UE (e.g., using communication manager1106, depicted inFIG.11) may calculate, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration, as described above.

As further shown inFIG.8, in some aspects, process800may include calculating an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration (block830). For example, the UE (e.g., using communication manager1106, depicted inFIG.11) may calculate an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration, as described above.

As further shown inFIG.8, in some aspects, process800may include identifying a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows (block840). For example, the UE (e.g., using communication manager1106, depicted inFIG.11) may identify a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows, as described above.

As further shown inFIG.8, in some aspects, process800may include transmitting, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling (block850). For example, the UE (e.g., using transmission component1104and/or communication manager1106, depicted inFIG.11) may transmit, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling, as described above.

In a first aspect, calculating the adjusted nominal time domain window duration in accordance with applying the parameter to the nominal time domain window duration comprises calculating the adjusted nominal time domain window duration in accordance with dividing the nominal time domain window duration by the parameter.

In a second aspect, alone or in combination with the first aspect, the parameter is an integer.

In a third aspect, alone or in combination with one or more of the first and second aspects, the parameter is equal to two, and the plurality of actual time domain windows is two time domain windows.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, calculating the adjusted nominal time domain window duration further comprises rounding, in accordance with the adjusted nominal time domain window duration not being equal to an integer, the adjusted nominal time domain window duration to a next largest integer.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, process800includes transmitting, to the network node, an indication that the UE is configured to perform antenna switching.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the indication that the UE is configured to perform antenna switching includes an indication of an antenna switching gap duration.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, process800includes receiving, from the network node, an indication to enable antenna switching or an indication to disable antenna switching.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the indication to enable antenna switching or the indication to disable antenna switching includes an antenna switching parameter that indicates to enable antenna switching or that indicates to disable antenna switching.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, process800includes obtaining an indication of a default value that indicates to enable antenna switching or that indicates to disable antenna switching.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, process800includes enabling the antenna switching or disabling the antenna switching in accordance with the default value and in accordance with identifying that an indication to enable antenna switching or an indication to disable the antenna switching has not been received from the network node.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the indication that antenna switching is enabled is an indication of an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the indication that antenna switching is enabled is an indication of a restart of a physical uplink shared channel window enabled condition or a physical uplink control channel window enabled condition.

FIG.9is a diagram illustrating an example process900performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure. Example process900is an example where the apparatus or the UE (e.g., UE120) performs operations associated with demodulation reference signal bundling.

As shown inFIG.9, in some aspects, process900may include identifying a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling (block910). For example, the UE (e.g., using communication manager1106, depicted inFIG.11) may identify a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling, as described above.

As further shown inFIG.9, in some aspects, process900may include calculating, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled (block920). For example, the UE (e.g., using communication manager1106, depicted inFIG.11) may calculate, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled, as described above.

As further shown inFIG.9, in some aspects, process900may include identifying a plurality of actual time domain windows (block930). For example, the UE (e.g., using communication manager1106, depicted inFIG.11) may identify a plurality of actual time domain windows, as described above.

As further shown inFIG.9, in some aspects, process900may include transmitting, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling (block940). For example, the UE (e.g., using transmission component1104and/or communication manager1106, depicted inFIG.11) may transmit, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling, as described above.

In a first aspect, calculating the other antenna switching event location comprises dividing a quantity of slots associated with the communication by a parameter, and setting the other antenna switching event location to a slot location that is equal to the quantity of slots associated with the communication divided by the parameter.

In a second aspect, alone or in combination with the first aspect, the parameter is an integer.

In a third aspect, alone or in combination with one or more of the first and second aspects, the parameter is equal to two.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process900includes identifying that the quantity of slots associated with the communication is not equal to an integer, and rounding the slot location to a slot location that corresponds to a next largest integer, wherein setting the other antenna switching event location to the slot location comprises setting the other antenna switching event location to the slot location that corresponds to the next largest integer.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, process900includes transmitting, to the network node, an indication that the UE is configured to perform antenna switching.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the indication that the UE is configured to perform antenna switching includes an indication of an antenna switching gap duration.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, process900includes receiving, from the network node, an indication to enable antenna switching or an indication to disable antenna switching.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the indication to enable antenna switching or the indication to disable antenna switching includes an antenna switching parameter that indicates to enable antenna switching or indicates to disable antenna switching.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, process900includes obtaining an indication of a default value that indicates to enable antenna switching or indicates to disable antenna switching.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, process900includes enabling the antenna switching or disabling the antenna switching in accordance with the default value and in accordance with identifying that an indication to enable the antenna switching or an indication to disable the antenna switching has not been received from the network node.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the indication that antenna switching is enabled is an indication of an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the indication that antenna switching is enabled is an indication of a restart of a physical uplink shared channel window enabled condition or a physical uplink control channel window enabled condition.

FIG.10is a diagram illustrating an example process1000performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure. Example process1000is an example where the apparatus or the UE (e.g., UE120) performs operations associated with demodulation reference signal bundling.

As shown inFIG.10, in some aspects, process1000may include identifying an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity (block1010). For example, the UE (e.g., using communication manager1106, depicted inFIG.11) may identify an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity, as described above.

As further shown inFIG.10, in some aspects, process1000may include transmitting, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling (block1020). For example, the UE (e.g., using transmission component1104and/or communication manager1106, depicted inFIG.11) may transmit, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling, as described above.

In a first aspect, the event is an antenna switching event.

In a second aspect, alone or in combination with the first aspect, the event is associated with a restart of a physical uplink shared channel window enabled condition or associated with a physical uplink control channel window enabled condition.

In a third aspect, alone or in combination with one or more of the first and second aspects, process1000includes identifying a nominal time domain window duration and a quantity of nominal time domain windows for the demodulation reference signal bundling; calculating, in accordance with the quantity of nominal time domain windows being a single nominal time domain window, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration; calculating an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration; and identifying a plurality of actual time domain windows in accordance with calculating the adjusted quantity of nominal time domain windows, wherein transmitting the communication using the demodulation reference signal bundling comprises transmitting, to the network node using the plurality of actual time domain windows, the communication using the demodulation reference signal bundling.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, calculating the adjusted nominal time domain window duration in accordance with applying the parameter to the nominal time domain window duration comprises calculating the adjusted nominal time domain window duration in accordance with dividing the nominal time domain window duration by the parameter.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the parameter is an integer.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the parameter is equal to two, and the plurality of actual time domain windows is two time domain windows.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, calculating the adjusted nominal time domain window duration further comprises rounding, in accordance with the adjusted nominal time domain window duration not being equal to an integer, the adjusted nominal time domain window duration to a next largest integer.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, process1000includes identifying a nominal time domain window duration and a quantity of nominal time domain windows for the demodulation reference signal bundling; calculating, in accordance with the event occurring at an event location, an adjusted event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window; and identifying a plurality of actual time domain windows, wherein transmitting the communication using the demodulation reference signal bundling comprises transmitting, to the network node using the plurality of actual time domain windows and in accordance with the adjusted event location, the communication using the demodulation reference signal bundling.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, calculating the adjusted event location comprises dividing a quantity of slots associated with the communication by a parameter, and setting the adjusted event location to a slot location that is equal to the quantity of slots associated with the communication divided by the parameter.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the parameter is an integer.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the parameter is equal to two.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, process1000includes identifying that the quantity of slots associated with the communication is not equal to an integer, and rounding the slot location to a slot location that corresponds to a next largest integer, wherein setting the adjusted event location to the slot location comprises setting the adjusted event location to the slot location that corresponds to the next largest integer.

FIG.11is a diagram of an example apparatus1100for wireless communication, in accordance with the present disclosure. The apparatus1100may be a UE, or a UE may include the apparatus1100. In some aspects, the apparatus1100includes a reception component1102, a transmission component1104, and/or a communication manager1106, which may be in communication with one another (for example, via one or more buses and/or one or more other components). In some aspects, the communication manager1106is the communication manager140described in connection withFIG.1. As shown, the apparatus1100may communicate with another apparatus1108, such as a UE or a network node (such as a CU, a DU, an RU, or a base station), using the reception component1102and the transmission component1104.

The reception component1102may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus1108. The reception component1102may provide received communications to one or more other components of the apparatus1100. In some aspects, the reception component1102may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and may provide the processed signals to the one or more other components of the apparatus1100. In some aspects, the reception component1102may include one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receive processors, one or more controllers/processors, one or more memories, or a combination thereof, of the UE described in connection withFIG.2.

The transmission component1104may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus1108. In some aspects, one or more other components of the apparatus1100may generate communications and may provide the generated communications to the transmission component1104for transmission to the apparatus1108. In some aspects, the transmission component1104may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and may transmit the processed signals to the apparatus1108. In some aspects, the transmission component1104may include one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers/processors, one or more memories, or a combination thereof, of the UE described in connection withFIG.2. In some aspects, the transmission component1104may be co-located with the reception component1102in one or more transceivers.

The communication manager1106may support operations of the reception component1102and/or the transmission component1104. For example, the communication manager1106may receive information associated with configuring reception of communications by the reception component1102and/or transmission of communications by the transmission component1104. Additionally, or alternatively, the communication manager1106may generate and/or provide control information to the reception component1102and/or the transmission component1104to control reception and/or transmission of communications.

The communication manager1106may identify a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling. The communication manager1106may calculate, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration. The communication manager1106may calculate an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration. The communication manager1106may identify a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows. The transmission component1104may transmit, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling.

The transmission component1104may transmit, to the network node, an indication that the UE is configured to perform antenna switching. The reception component1102may receive, from the network node, an indication to enable antenna switching or an indication to disable antenna switching. The reception component1102may obtain an indication of a default value that indicates to enable antenna switching or that indicates to disable antenna switching. The communication manager1106may enable the antenna switching or disable the antenna switching in accordance with the default value and in accordance with identifying that an indication to enable antenna switching or an indication to disable the antenna switching has not been received from the network node.

The communication manager1106may identify a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling. The communication manager1106may calculate, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled. The communication manager1106may identify a plurality of actual time domain windows. The transmission component1104may transmit, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling.

The communication manager1106may identify that the quantity of slots associated with the communication is not equal to an integer. The communication manager1106may round the slot location to a slot location that corresponds to a next largest integer, wherein setting the other antenna switching event location to the slot location comprises setting the other antenna switching event location to the slot location that corresponds to the next largest integer. The transmission component1104may transmit, to the network node, an indication that the UE is configured to perform antenna switching. The reception component1102may receive, from the network node, an indication to enable antenna switching or an indication to disable antenna switching. The reception component1102may obtain an indication of a default value that indicates to enable antenna switching or indicates to disable antenna switching. The communication manager1106may enable the antenna switching or disable the antenna switching in accordance with the default value and in accordance with identifying that an indication to enable the antenna switching or an indication to disable the antenna switching has not been received from the network node.

The communication manager1106may identify an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity. The transmission component1104may transmit, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling.

The communication manager1106may identify a nominal time domain window duration and a quantity of nominal time domain windows for the demodulation reference signal bundling. The communication manager1106may calculate, in accordance with the quantity of nominal time domain windows being a single nominal time domain window, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration. The communication manager1106may calculate an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration. The communication manager1106may identify a plurality of actual time domain windows in accordance with calculating the adjusted quantity of nominal time domain windows, wherein transmitting the communication using the demodulation reference signal bundling comprises transmitting, to the network node using the plurality of actual time domain windows, the communication using the demodulation reference signal bundling. The communication manager1106may identify a nominal time domain window duration and a quantity of nominal time domain windows for the demodulation reference signal bundling. The communication manager1106may calculate, in accordance with the event occurring at an event location, an adjusted event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window. The communication manager1106may identify a plurality of actual time domain windows, wherein transmitting the communication using the demodulation reference signal bundling comprises transmitting, to the network node using the plurality of actual time domain windows and in accordance with the adjusted event location, the communication using the demodulation reference signal bundling. The communication manager1106may identify that the quantity of slots associated with the communication is not equal to an integer. The communication manager1106may round the slot location to a slot location that corresponds to a next largest integer, wherein setting the adjusted event location to the slot location comprises setting the adjusted event location to the slot location that corresponds to the next largest integer.

Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: identifying a nominal time domain window duration and at least one of a quantity of nominal time domain windows or a quantity of actual time domain windows for demodulation reference signal bundling; calculating, in accordance with the quantity of nominal time domain windows being a single nominal time domain window or the quantity of actual time domain windows being a single actual time domain window, and in accordance with an indication that antenna switching is enabled, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration; calculating an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration; identifying a plurality of actual time domain windows in accordance with the adjusted quantity of nominal time domain windows; and transmitting, to a network node, using the plurality of actual time domain windows, a communication using demodulation reference signal bundling.

Aspect 2: The method of Aspect 1, wherein calculating the adjusted nominal time domain window duration in accordance with applying the parameter to the nominal time domain window duration comprises calculating the adjusted nominal time domain window duration in accordance with dividing the nominal time domain window duration by the parameter.

Aspect 3: The method of Aspect 2, wherein the parameter is an integer.

Aspect 4: The method of Aspect 2, wherein the parameter is equal to two, and the plurality of actual time domain windows is two time domain windows.

Aspect 5: The method of Aspect 2, wherein calculating the adjusted nominal time domain window duration further comprises rounding, in accordance with the adjusted nominal time domain window duration not being equal to an integer, the adjusted nominal time domain window duration to a next largest integer.

Aspect 6: The method of any of Aspects 1-5, further comprising transmitting, to the network node, an indication that the UE is configured to perform antenna switching.

Aspect 7: The method of Aspect 6, wherein the indication that the UE is configured to perform antenna switching includes an indication of an antenna switching gap duration.

Aspect 8: The method of any of Aspects 1-7, further comprising receiving, from the network node, an indication to enable antenna switching or an indication to disable antenna switching.

Aspect 9: The method of Aspect 8, wherein the indication to enable antenna switching or the indication to disable antenna switching includes an antenna switching parameter that indicates to enable antenna switching or that indicates to disable antenna switching.

Aspect 10: The method of any of Aspects 1-9, further comprising obtaining an indication of a default value that indicates to enable antenna switching or that indicates to disable antenna switching.

Aspect 11: The method of Aspect 10, further comprising enabling the antenna switching or disabling the antenna switching in accordance with the default value and in accordance with identifying that an indication to enable antenna switching or an indication to disable the antenna switching has not been received from the network node.

Aspect 12: The method of any of Aspects 1-11, wherein the indication that antenna switching is enabled is an indication of an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity.

Aspect 13: The method of any of Aspects 1-12, wherein the indication that antenna switching is enabled is an indication of a restart of a physical uplink shared channel window enabled condition or a physical uplink control channel window enabled condition.

Aspect 14: A method of wireless communication performed by a user equipment (UE), comprising: identifying a nominal time domain window duration and a quantity of nominal time domain windows for demodulation reference signal bundling; calculating, in accordance with an antenna switching event occurring at an antenna switching event location, another antenna switching event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window and in accordance with an indication that antenna switching is enabled; identifying a plurality of actual time domain windows in accordance with the antenna switching event causing a change to at least one of a power consistence or a phase continuity; and transmitting, to a network node, using the plurality of actual time domain windows and in accordance with the other antenna switching event location, a communication using demodulation reference signal bundling.

Aspect 15: The method of Aspect 14, wherein calculating the other antenna switching event location comprises: dividing a quantity of slots associated with the communication by a parameter; and setting the other antenna switching event location to a slot location that is equal to the quantity of slots associated with the communication divided by the parameter.

Aspect 16: The method of Aspect 15, wherein the parameter is an integer.

Aspect 17: The method of Aspect 15, wherein the parameter is equal to two.

Aspect 18: The method of Aspect 17, further comprising: identifying that the quantity of slots associated with the communication is not equal to an integer; and rounding the slot location to a slot location that corresponds to a next largest integer, wherein setting the other antenna switching event location to the slot location comprises setting the other antenna switching event location to the slot location that corresponds to the next largest integer.

Aspect 19: The method of any of Aspects 14-18, further comprising transmitting, to the network node, an indication that the UE is configured to perform antenna switching.

Aspect 20: The method of Aspect 19, wherein the indication that the UE is configured to perform antenna switching includes an indication of an antenna switching gap duration.

Aspect 21: The method of any of Aspects 14-20, further comprising receiving, from the network node, an indication to enable antenna switching or an indication to disable antenna switching.

Aspect 22: The method of Aspect 21, wherein the indication to enable antenna switching or the indication to disable antenna switching includes an antenna switching parameter that indicates to enable antenna switching or indicates to disable antenna switching.

Aspect 23: The method of any of Aspects 14-22, further comprising obtaining an indication of a default value that indicates to enable antenna switching or indicates to disable antenna switching.

Aspect 24: The method of Aspect 23, further comprising enabling the antenna switching or disabling the antenna switching in accordance with the default value and in accordance with identifying that an indication to enable the antenna switching or an indication to disable the antenna switching has not been received from the network node.

Aspect 25: The method of any of Aspects 14-24, wherein the indication that antenna switching is enabled is an indication of an occurrence of an event that causes a change to at least one of the power consistency or the phase continuity.

Aspect 26: The method of any of Aspects 14-25, wherein the indication that antenna switching is enabled is an indication of a restart of a physical uplink shared channel window enabled condition or a physical uplink control channel window enabled condition.

Aspect 27: A method of wireless communication performed by a user equipment (UE), comprising: identifying an occurrence of an event that causes a change to at least one of a power consistency or a phase continuity; and transmitting, to a network node, in accordance with the occurrence of the event that causes the change to at least one of the power consistency or the phase continuity, a communication using demodulation reference signal bundling.

Aspect 28: The method of Aspect 27, wherein the event is an antenna switching event.

Aspect 29: The method of any of Aspects 27-28, wherein the event is associated with a restart of a physical uplink shared channel window enabled condition or associated with a physical uplink control channel window enabled condition.

Aspect 30: The method of any of Aspects 27-29, further comprising: identifying a nominal time domain window duration and a quantity of nominal time domain windows for the demodulation reference signal bundling; calculating, in accordance with the quantity of nominal time domain windows being a single nominal time domain window, an adjusted nominal time domain window duration in accordance with applying a parameter to the nominal time domain window duration; calculating an adjusted quantity of nominal time domain windows in accordance with the adjusted nominal time domain window duration; and identifying a plurality of actual time domain windows in accordance with calculating the adjusted quantity of nominal time domain windows, wherein transmitting the communication using the demodulation reference signal bundling comprises transmitting, to the network node using the plurality of actual time domain windows, the communication using the demodulation reference signal bundling.

Aspect 31: The method of Aspect 30, wherein calculating the adjusted nominal time domain window duration in accordance with applying the parameter to the nominal time domain window duration comprises calculating the adjusted nominal time domain window duration in accordance with dividing the nominal time domain window duration by the parameter.

Aspect 32: The method of Aspect 31, wherein the parameter is an integer.

Aspect 33: The method of Aspect 31, wherein the parameter is equal to two, and the plurality of actual time domain windows is two time domain windows.

Aspect 34: The method of Aspect 31, wherein calculating the adjusted nominal time domain window duration further comprises rounding, in accordance with the adjusted nominal time domain window duration not being equal to an integer, the adjusted nominal time domain window duration to a next largest integer.

Aspect 35: The method of any of Aspects 27-34, further comprising: identifying a nominal time domain window duration and a quantity of nominal time domain windows for the demodulation reference signal bundling; calculating, in accordance with the event occurring at an event location, an adjusted event location in accordance with the quantity of nominal time domain windows being equal to a single nominal time domain window; and identifying a plurality of actual time domain windows, wherein transmitting the communication using the demodulation reference signal bundling comprises transmitting, to the network node using the plurality of actual time domain windows and in accordance with the adjusted event location, the communication using the demodulation reference signal bundling.

Aspect 36: The method of Aspect 35, wherein calculating the adjusted event location comprises: dividing a quantity of slots associated with the communication by a parameter; and setting the adjusted event location to a slot location that is equal to the quantity of slots associated with the communication divided by the parameter.

Aspect 37: The method of Aspect 36, wherein the parameter is an integer.

Aspect 38: The method of Aspect 36, wherein the parameter is equal to two.

Aspect 39: The method of Aspect 38, further comprising: identifying that the quantity of slots associated with the communication is not equal to an integer; and rounding the slot location to a slot location that corresponds to a next largest integer, wherein setting the adjusted event location to the slot location comprises setting the adjusted event location to the slot location that corresponds to the next largest integer.

Aspect 40: The method of any of Aspects 1-13, further comprising: enabling antenna switching or disabling antenna switching in accordance with a default value that indicates to enable antenna switching or that indicates to disable antenna switching and in accordance with identifying that an indication to enable antenna switching or an indication to disable the antenna switching has not been received from the network node.

Aspect 41: The method of any of Aspects 14-26, further comprising: enabling antenna switching or disabling antenna switching in accordance with a default value that indicates to enable antenna switching or that indicates to disable antenna switching and in accordance with identifying that an indication to enable antenna switching or an indication to disable the antenna switching has not been received from the network node.

Aspect 44: An apparatus for wireless communication, the apparatus comprising at least one means for performing the method of one or more of Aspects 1-41.

Aspect 45: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to perform the method of one or more of Aspects 1-41.