Patent Description:
Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for time domain resource assignment for multiple cells scheduled by a single downlink control information message.

<CIT> describes aspects of suppressing deterioration of communication quality when communication is performed using a plurality of transmission points. The user terminal is used to transmit from a plurality of transmission points based on predetermined downlink control.

Aspects of the present invention include a method according to claim <NUM>, a user equipment according to claim <NUM> and a non-transitory computer-readable medium according to claim <NUM>. Further aspects are disclosed in the appended dependent claims.

It should be noted that while aspects may be described herein using terminology commonly associated with a <NUM> or NR radio access technology (RAT), aspects of the present disclosure can be applied to other RATs, such as a <NUM> RAT, a <NUM> RAT.

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 time domain resource assignment (TDRA) for multiple cells scheduled by a single downlink control information (DCI) message, 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 a single DCI message that schedules communications on multiple cells, wherein the single DCI message indicates multiple TDRAs corresponding to the multiple cells, wherein each of the multiple TDRAs corresponds to a different scheduled communication; and/or means for communicating using the multiple TDRAs corresponding to the multiple cells, wherein the means for communicating comprises: means for transmitting the communications using the multiple TDRAs corresponding to the multiple cells, or means for receiving the communications using the multiple TDRAs corresponding to the multiple cells. 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>, and/or receive processor <NUM>.

In some aspects, base station <NUM> may include means for transmitting a single DCI message that schedules communications on multiple cells, wherein the single DCI message indicates multiple TDRAs corresponding to the multiple cells, wherein each of the multiple TDRAs corresponds to a different scheduled communication; and/or means for communicating using the multiple TDRAs corresponding to the multiple cells, wherein the means for communicating comprises: means for transmitting the communications using the multiple TDRAs corresponding to the multiple cells, or means for receiving the communications using the multiple TDRAs corresponding to the multiple cells. 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>, and/or antenna <NUM>.

<FIG> is a diagram illustrating example time domain resource assignments, in accordance with the present disclosure. <FIG> shows an example downlink time domain resource assignment (TDRA) table <NUM> and an example uplink TDRA table <NUM>. The downlink TDRA table <NUM> may be, for example, a physical downlink shared channel (PDSCH) TDRA table. The uplink TDRA table <NUM> may be, for example, a physical uplink shared channel (PUSCH) TDRA table. In some aspects, the base station <NUM> and the UE <NUM> may use different TDRA tables than those shown in <FIG>, such as for different configurations, different cells, different sub-carrier spacings of cells, and/or the like.

When scheduling a communication, a base station <NUM> may transmit downlink control information (DCI) that indicates a TDRA for the communication. For example, the DCI may include a TDRA field that includes a TDRA index value. The TDRA index value may indicate a row index of a corresponding TDRA table, and the row index may correspond to a set of TDRA parameters (sometimes referred to as scheduling parameters or scheduling information). The base station <NUM> and the UE <NUM> may use those TDRA parameters for the scheduled communications. In the examples shown in <FIG>, a TDRA index value of m in the DCI may correspond to a row index of m+<NUM> in the TDRA table. For example, a TDRA index value of <NUM> may correspond to a row index of <NUM>.

For a downlink communication (e.g., a PDSCH communication), the TDRA parameters may include, for example, a K<NUM> value, an S value, and an L value. The K<NUM> value may represent a scheduling offset (e.g., in number of slots) between the slot containing the scheduling DCI (that schedules the PDSCH communication) and the slot containing the scheduled PDSCH communication (scheduled by the scheduling DCI). The S value may represent a starting symbol for the PDSCH communication in the indicated slot. The L value may represent a length (e.g., a number of consecutive symbols) of the PDSCH communication (e.g., in the indicated slot). In some aspects, the same row index value may correspond to a different set of TDRA parameters depending on a Type A demodulation reference signal (DMRS) position (e.g., a symbol within a resource block that contains the DMRS), a PDSCH mapping type (e.g., indicating a starting symbol of the DMRS, a length of the DMRS, and/or whether slot-based scheduling or mini-slot-based scheduling is used), and/or the like.

For an uplink communication (e.g., a PUSCH communication), the TDRA parameters may include, for example, a K<NUM> value, an S value, and an L value. The K<NUM> value may represent a scheduling offset (e.g., in number of slots) between the slot containing the scheduling DCI (that schedules the PUSCH communication) and the slot containing the scheduled PUSCH communication (scheduled by the scheduling DC1). The S value may represent a starting symbol for the PUSCH communication in the indicated slot. The L value may represent a length (e.g., a number of consecutive symbols) of the PUSCH communication (e.g., in the indicated slot). In some aspects, the same row index value may correspond to a different set of TDRA parameters depending on, for example, a PUSCH mapping type (e.g., indicating a starting symbol of the DMRS, a length of the DMRS, and/or whether slot-based scheduling or mini-slot-based scheduling is used).

<FIG> is a diagram illustrating an example <NUM> of DCI (e.g., a single DCI message) that schedules multiple cells, in accordance with the present disclosure. As shown in <FIG>, a base station <NUM> and a UE <NUM> may communicate with one another.

As shown, the base station <NUM> may transmit, to the UE <NUM>, DCI <NUM> (e.g., a single DCI message) that schedules multiple communications for the UE <NUM>. The multiple communications may be scheduled for at least two different cells. In some cases, a cell may be referred to as a carrier or a component carrier (CC). In some cases, DCI that schedules a communication for a cell via which the DCI is transmitted may be referred to as self-carrier (or self-cell) scheduling DCI. In some cases, DCI that schedules a communication for a cell via which the DCI is transmitted may be referred to as cross-carrier (or cross-cell) scheduling DCI. In some aspects, the DCI <NUM> may be cross-carrier scheduling DCI, and may or may not be self-carrier scheduling DCI. In some aspects, the DCI <NUM> that schedules communications in at least two cells may be referred to as combination DCI, a single DCI message that schedules communications on multiple cells, and/or the like. Different cells scheduled by the DCI <NUM> may have the same sub-carrier spacing (SCS) or different SCSs.

In example <NUM>, the DCI <NUM> schedules a communication for a first cell <NUM> that carries the DCI <NUM> (shown as CC0), schedules a communication for a second cell <NUM> that does not carry the DCI <NUM> (shown as CC1), and schedules a communication for a third cell <NUM> that does not carry the DCI <NUM> (shown as CC2). In some aspects, the DCI <NUM> may schedule communications on a different number of cells than shown in <FIG> (e.g., two cells, four cells, five cells, and so on). The number of cells may be greater than or equal to two.

A communication scheduled by the DCI <NUM> may include a data communication, such as a physical downlink shared channel (PDSCH) communication, a physical uplink shared channel (PUSCH) communication, and/or the like. For a data communication, the DCI <NUM> may schedule a single transport block (TB) across multiple cells or may separately schedule multiple TBs in the multiple cells. Additionally, or alternatively, a communication scheduled by the DCI <NUM> may include a reference signal, such as a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), and/or the like. For a reference signal, the DCI <NUM> may trigger a single resource for reference signal transmission across multiple cells or may separately schedule multiple resources for reference signal transmission in the multiple cells. In some cases, scheduling information in the DCI <NUM> may be indicated once and reused for multiple communications (e.g., on different cells), such as a modulation and coding scheme (MCS), a resource to be used for acknowledgement (ACK) or negative acknowledgement (NACK) of a communication scheduled by the DCI <NUM>, a resource allocation for a scheduled communication, and/or the like, to conserve signaling overhead.

In some aspects, the base station <NUM> may configure a cell with a TDRA table, as described above in connection with <FIG>. In this case, when the base station <NUM> transmits DCI to the UE <NUM> to schedule a communication (e.g., an uplink communication or a downlink communication), the base station <NUM> may include, in the DCI (e.g. in a TDRA field of the DCI), a TDRA index value that indicates a set of TDRA parameters (e.g., corresponding to a row index indicated by the TDRA index value) included in the TDRA table. The UE <NUM> may transmit or receive (e.g., monitor for) the communication on the cell using the indicated TDRA parameters. For example, the UE <NUM> may transmit or receive the communication on the cell in a slot indicated by the TDRA index value and for a time period defined by a starting symbol and a length indicated by the TDRA index value.

However, when a single DCI message schedules communications on multiple cells, as shown in <FIG>, each cell may be associated with (e.g., configured with) a different TDRA table. In this case, the UE <NUM> may misinterpret a TDRA index value included in the single DCI message, and may select a TDRA that was not intended by the base station <NUM>. This may lead to errors and dropped communications, may increase latency, may reduce reliability, may reduce spectral efficiency (e.g., due to retransmissions), and/or the like.

Some techniques and apparatuses described herein enable a UE <NUM> to properly interpret a TDRA index value included in a single DCI message that schedules communication in multiple cells, and to apply that TDRA index value to determine a respective TDRA on each of the multiple cells. In this way, communication errors may be reduced, latency may be reduced, reliability may be improved, spectral efficiency may be improved, and/or the like. Furthermore, some techniques and apparatuses described herein enable a single TDRA index value to be applied across multiple cells, thereby reducing signaling overhead.

<FIG> is a diagram illustrating an example <NUM> of time domain resource assignment for multiple cells scheduled by a single DCI message, in accordance with the present disclosure. As shown in <FIG>, a base station <NUM> and a UE <NUM> may communicate with one another.

As shown by reference number <NUM>, the base station <NUM> may transmit, to the UE <NUM>, a TDRA configuration for multiple cells. For example, the base station <NUM> may configure one or more TDRA tables for each cell that is configured for the UE <NUM>. In some aspects, the base station <NUM> may configure a first TDRA table for a first cell (having a cell ID of <NUM>) and may configure a second TDRA table for a second cell (having a cell ID of <NUM>). In some aspects, the base station <NUM> may configure, for each cell configured for the UE <NUM>, one or more uplink TDRA tables (e.g., one or more PUSCH TDRA tables) for uplink communications on that cell and/or one or more downlink TDRA tables (e.g., one or more PDSCH TDRA tables) for downlink communication on that cell. In some aspects, the TDRA configuration may be included in a configuration message, such as a radio resource control (RRC) message (e.g., an RRC configuration message, an RRC reconfiguration message, and/or the like). In some aspects, the TDRA configuration may be specified according to a wireless communication standard.

As shown by reference number <NUM>, the base station <NUM> may transmit, to the UE <NUM>, a single DCI message that schedules communications on multiple cells, as described in more detail above in connection with <FIG>. As shown by reference number <NUM>, the single DCI message may indicate multiple TDRAs corresponding to the multiple cells. Each TDRA, of the multiple TDRAs, may correspond to a different scheduled communication.

In example <NUM>, the single DCI message indicates that a first communication is scheduled on the first cell (Cell <NUM>) according to a first set of TDRA parameter values (shown as A, B, and C), and that a second communication is scheduled on the second cell (Cell <NUM>) according to a second set of TDRA parameter values (shown as D, E, and F). As described in more detail below, the first set of TDRA parameter values may be the same as or different from the second set of TDRA parameter values. As further shown, the first set of TDRA parameters may correspond to a row index of X, and the second set of TDRA parameters may correspond to a row index of Y. As described in more detail below, the row index for the first set of TDRA parameters (e.g., X) may be the same as or different from the row index for the second set of TDRA parameters (e.g., Y). Additional details regarding techniques for indicating the multiple TDRAs are described below in connection with <FIG>.

As shown by reference number <NUM>, the UE <NUM> and the base station <NUM> may communicate with one another using the multiple TDRAs (indicated in the single DCI message) corresponding to the multiple cells. For example, the base station <NUM> may transmit downlink communications (e.g., PDSCH communications) to the UE <NUM> using the multiple TDRAs corresponding to the multiple cells, and the UE <NUM> may monitor for and/or receive the downlink communications using the multiple TDRAs corresponding to the multiple cells. Alternatively, the UE <NUM> may transmit uplink communications (e.g., PUSCH communications) to the base station <NUM> using the multiple TDRAs corresponding to the multiple cells, and the base station <NUM> may monitor for and/or receive the uplink communications using the multiple TDRAs corresponding to the multiple cells.

For example, if the single DCI message includes downlink grants that schedule downlink communications on multiple cells, then the single DCI message may indicate multiple downlink TDRAs corresponding to the multiple cells. For example, the single DCI message may include one or more TDRA index values, which may indicate multiple downlink TDRAs corresponding to the multiple cells. The multiple downlink TDRAs may be indicated in the same downlink TDRA table used across multiple cells, or may be indicated in different downlink TDRA tables used for different cells. The base station <NUM> may transmit the downlink communications using the indicated downlink TDRAs for respective cells, and the UE <NUM> may monitor for and/or receive the downlink communications using the indicated downlink TDRAs for respective cells.

As another example, if the single DCI message includes uplink grants that schedule uplink communications on multiple cells, then the single DCI message may indicate multiple uplink TDRAs corresponding to the multiple cells. For example, the single DCI message may include one or more TDRA index values, which may indicate multiple uplink TDRAs corresponding to the multiple cells. The multiple uplink TDRAs may be indicated in the same uplink TDRA table used across multiple cells, or may be indicated in different uplink TDRA tables used for different cells. The base station <NUM> may transmit the uplink communications using the indicated uplink TDRAs for respective cells, and the UE <NUM> may monitor for and/or receive the uplink communications using the indicated uplink TDRAs for respective cells.

By enabling an indication of multiple TDRAs, corresponding to multiple cells, in the single DCI message, communication errors may be reduced, latency may be reduced, reliability may be improved, spectral efficiency may be improved, and/or the like. Furthermore, signaling overhead may be reduced according to some techniques described herein. Additional details regarding techniques for indicating the multiple TDRAs are described below in connection with <FIG>. In some aspects, a first technique described below may be used to indicate multiple TDRAs for downlink communications, and a second (e.g., different) technique described below may be used to indicate multiple TDRAs for uplink communications. In some aspects, the same technique may be used to indicate multiple TDRAs for both downlink communications and uplink communications.

<FIG> is a diagram illustrating an example <NUM> of time domain resource assignment for multiple cells scheduled by a single DCI message, in accordance with the present disclosure.

As shown by reference number <NUM>, in some aspects, the single DCI message includes a single TDRA index value within a single TDRA field. The term "TDRA index value" may refer to a value that indicates or identifies a TDRA to be used for a scheduled communication, as described above in connection with <FIG>. The term "TDRA field" may refer to a field, in the single DCI message, that includes the TDRA index value, such as a dedicated field of the single DCI message that includes the TDRA index value. The example single DCI message of <FIG> includes a single field dedicated to carrying bits of the TDRA index value. By using a single TDRA field and a single TDRA index value, signaling overhead may be reduced and network resources may be conserved.

In example <NUM>, the single TDRA index value indicates a single set of TDRA parameters, in a single TDRA table, that is used for the multiple cells scheduled by the single DCI message. For example, the single TDRA index value (shown as <NUM>) may indicate a single set of TDRA parameters that is used for each cell on which the single DCI message schedules a communication. In some aspects, the single set of TDRA parameters may correspond to a single row index of a single TDRA table. For example, as shown by reference number <NUM>, the single TDRA index value of <NUM> indicates a row index of <NUM> in a single TDRA table that is used for both a first cell (Cell <NUM>) and a second cell (Cell <NUM>) scheduled by the single DCI message. In this case, the same row index and the same TDRA table are used for both the first cell and the second cell to identify a set of TDRA parameters that is used for both cells. For example, the PDSCH communications on both the first cell and the second cell may be scheduled according to a K<NUM> value of <NUM>, an S value of <NUM>, and an L value of <NUM>, as shown.

In some aspects, the UE <NUM> may be configured with different TDRA tables for different cells. For example, the UE <NUM> may be configured with a first TDRA table for the first cell, and may be configured with a second TDRA table for the second cell. This may lead to misinterpretation of the TDRA index value (e.g., due to misinterpretation of to which TDRA table the TDRA index value is to be applied). To mitigate this issue, the UE <NUM> may follow a rule to determine a TDRA table to be used in association with the TDRA index value indicated in the single DCI message. The rule may be configured by the base station <NUM> or may be specified according to a wireless communication standard.

For example, as shown by reference number <NUM>, the base station <NUM> may transmit, to the UE <NUM>, a configuration (e.g., in an RRC message) that indicates the TDRA table (e.g., the single TDRA table) to be used for single DCI that schedules communications on multiple cells. In some aspects, the base station <NUM> may configure a TDRA table, for single DCI scheduling of multiple cells, that is different from all of the TDRA tables configured for the cells configured for the UE <NUM>. For example, a TDRA table configured for single DCI scheduling of multiple cells may be dedicated to or used only for a single DCI message that schedules multiple cells, and may not be used for DCI that schedules a single cell (e.g., single DCI scheduling of a single cell).

Alternatively, the base station <NUM> and/or the UE <NUM> may use a TDRA table associated with and/or configured for a specific cell that is configured for the UE <NUM> for single DCI scheduling of multiple cells. In this case, a TDRA table that is configured for a specific cell may be reused for single DCI scheduling of multiple cells, thereby conserving signaling overhead. The specific cell may or may not be included in the multiple cells scheduled by the single DCI message. In some aspects, the specific cell may be a cell via which the single DCI message is received (e.g., a scheduling cell). In some aspects, the specific cell may be a cell, of multiple cells scheduled by the single DCI message, that has a smallest cell identifier or a smallest SCS among all cells of the multiple cells (or that has a smallest cell identifier or a smallest SCS among a set of cells that includes the multiple cells and that includes the scheduling cell). In some aspects, the specific cell may be a cell, of multiple cells scheduled by the single DCI message, that has a largest cell identifier or a largest SCS among all cells of the multiple cells (or that has a largest cell identifier or a largest SCS among a set of cells that includes the multiple cells and that includes the scheduling cell).

As shown by reference number <NUM>, in some aspects, the single DCI message includes a single TDRA index value within a single TDRA field. By using a single TDRA field and a single TDRA index value, signaling overhead may be reduced and network resources may be conserved. In example <NUM>, the single TDRA index value indicates multiple sets of TDRA parameters in corresponding multiple TDRA tables. In this case, each set of TDRA parameters, of the multiple sets of TDRA parameters, corresponds to a different cell of the multiple cells scheduled by the single DCI message. In some aspects, the multiple sets of TDRA parameters are associated with a same row index in different TDRA tables.

For example, as shown by reference number <NUM>, a single TDRA index value of <NUM> may indicate that a row index of <NUM> is to be used for both a first cell (Cell <NUM>) scheduled by the single DCI message and a second cell (Cell <NUM>) scheduled by the single DCI message. As shown by reference number <NUM>, the first cell may be associated with a first TDRA table (e.g., according to a configuration). As shown by reference number <NUM>, the second cell may be associated with a second (e.g., different) TDRA table (e.g., according to a configuration). As shown by reference number <NUM>, in some aspects, the first TDRA table and the second TDRA table may have different sets of TDRA parameters associated with the same row index. As shown, a row index of <NUM> in the first TDRA table for the first cell (e.g., having a specific SCS, such as <NUM>) indicates a K<NUM> value of <NUM>, an S value of <NUM>, and an L value of <NUM>. As further shown, a row index of <NUM> in the second TDRA table for the second cell (e.g., having an SCS that is twice that of, or some other multiple of, the SCS of the first cell, such as <NUM>) indicates a K<NUM> value of <NUM>, an S value of <NUM>, and an L value of <NUM>. Thus, the single TDRA index value of <NUM> may indicate a first set of TDRA parameters (e.g., a K<NUM> value of <NUM>, an S value of <NUM>, and an L value of <NUM>) for the first cell, and may indicate a second set of TDRA parameters (e.g., a K<NUM> value of <NUM>, an S value of <NUM>, and an L value of <NUM>) for the second cell. In this way, communications on different cells having different SCSs may be time-aligned (e.g., with the same start time and the same duration).

In some aspects, the UE <NUM> may be configured with different TDRA tables for different cells, and those different TDRA tables may have different numbers of rows. For example, the UE <NUM> may be configured with a first TDRA table, for the first cell that includes a first number of rows, and may be configured with a second TDRA table, for the second cell, that includes a second number of rows. The number of rows may be the same or different in the different TDRA tables. If different TDRA tables have different numbers of rows, this may lead to misinterpretation of the TDRA index value. To mitigate this issue, the UE <NUM> may follow a rule to determine a number of bits (e.g., a bit length, a bit width, or a bit size) included in the TDRA field (e.g., a number of bits of the TDRA index value). The rule may be configured by the base station <NUM> or may be specified according to a wireless communication standard.

For example, as shown by reference number <NUM>, the base station <NUM> may transmit, to the UE <NUM>, a configuration (e.g., in an RRC message) that indicates a number of bits to be included in the single TDRA field (e.g., a bit length, bit width, or bit size of the field). For example, the base station <NUM> may indicate that the TDRA field is <NUM> bit in length, is <NUM> bits in length, is <NUM> bits in length, or is <NUM> bits in length, among other examples. Alternatively, the base station <NUM> may indicate a manner in which the number of bits is to be determined. In some aspects, the number of bits (e.g., the bit length, bit width, or bit size) or the manner in which the number of bits is to be determined may be specified in a wireless communication standard.

In some aspects, the number of bits included in the TDRA field of the single DCI message may be based at least in part on a number of rows in a TDRA configured for a cell (e.g., for any cell) on which a communication is scheduled by the single DCI message. In some aspects, all cells scheduled by the single DCI message may be required to be configured with TDRA tables having the same number of rows (e.g., a same number of rows for a downlink TDRA table for single DCI scheduling downlink communications, or a same number of rows for an uplink TDRA table for single DCI scheduling uplink communications). For example, if all of the multiple cells scheduled by the single DCI message have TDRA tables with <NUM> rows (sometimes referred to as entries), then the TDRA field may contain four bits. As another example, if all of the multiple cells scheduled by the single DCI message have TDRA tables with <NUM> rows, then the TDRA field may contain three bits. This reduces the likelihood of ambiguity when scheduling communications on multiple cells.

In some aspects, the number of bits included in the TDRA field of the single DCI message may be based at least in part on a maximum number of rows permitted in a TDRA table. For example, if a maximum of <NUM> rows are permitted to be included in a TDRA table (e.g., if a TDRA table is not permitted to be configured with more than <NUM> rows), then the TDRA field may contain four bits.

In some aspects, the number of bits included in the TDRA field of the single DCI message may be based at least in part on a smallest number of rows in a TDRA table configured for a cell, of multiple cells scheduled by the single DCI message, as compared to all other TDRA tables configured for the multiple cells. For example, if a first cell scheduled by the single DCI message is associated with a TDRA table having <NUM> rows, and a second cell scheduled by the single DCI message is associated with a TDRA table having <NUM> rows, then the TDRA field may contain three bits (e.g., to indicate <NUM> possible values, one for each of the rows of the TDRA table of the second cell). This may reduce signaling overhead.

In some aspects, the number of bits included in the TDRA field of the single DCI message may be based at least in part on a largest number of rows in a TDRA table configured for a cell, of multiple cells scheduled by the single DCI message, as compared to all other TDRA tables configured for the multiple cells. For example, if a first cell scheduled by the single DCI message is associated with a TDRA table having <NUM> rows, and a second cell scheduled by the single DCI message is associated with a TDRA table having <NUM> rows, then the TDRA field may contain four bits (e.g., to indicate <NUM> possible values, one for each of the rows of the TDRA table of the first cell). This may increase scheduling flexibility.

In some aspects, the number of bits included in the TDRA field of the single DCI message may be based at least in part on a number of rows in a TDRA table configured for a specific cell. The specific cell may or may not be included in the multiple cells scheduled by the single DCI message. In some aspects, the specific cell may be a cell via which the single DCI message is received (e.g., a scheduling cell). In some aspects, the specific cell may be a cell, of multiple cells scheduled by the single DCI message, that has a smallest cell identifier or a smallest SCS among all cells of the multiple cells (or that has a smallest cell identifier or a smallest SCS among a set of cells that includes the multiple cells and that includes the scheduling cell). In some aspects, the specific cell may be a cell, of multiple cells scheduled by the single DCI message, that has a largest cell identifier or a largest SCS among all cells of the multiple cells (or that has a largest cell identifier or a largest SCS among a set of cells that includes the multiple cells and that includes the scheduling cell).

In some aspects, the single TDRA value included in the single DCI message may correspond to a row index (e.g., a row index value) that is greater than a number of rows in a TDRA table configured for a cell of the multiple cells scheduled by the single DCI message. For example, if a first cell scheduled by the single DCI message is associated with a TDRA table having <NUM> rows, and a second cell scheduled by the single DCI message is associated with a TDRA table having <NUM> rows, then the TDRA field may contain four bits to enable an indication of each of the <NUM> rows of the TDRA table configured for the first cell. However, the second cell does not have <NUM> rows in the associated TDRA table to correspond to each of the possible values in the TDRA field.

In some aspects, when the single TDRA value corresponds to a row index that is greater than a number of rows in a TDRA table configured for a cell, then the UE <NUM> and/or the base station <NUM> may refrain from scheduling a communication on that cell (e.g., may refrain from transmitting or receiving a scheduled communication on that cell). However, in this case, the UE <NUM> and/or the base station <NUM> may schedule a communication in a cell for which the TDRA index value is valid.

Alternatively, when the single TDRA value corresponds to a row index that is greater than a number of rows in a TDRA table configured for a cell, then the UE <NUM> and/or the base station <NUM> may schedule a communication on that cell (e.g., may transmit or receive a scheduled communication on that cell) using a TDRA that is determined based at least in part on performing a modulo operation using the TDRA index value and a number of rows in a TDRA table configured for that cell. For example, if the TDRA index value is <NUM> and the number of rows of a TDRA table configured for the cell is <NUM>, then the UE <NUM> and/or the base station <NUM> may calculate <NUM> mod <NUM> = <NUM>. The UE <NUM> and/or the base station <NUM> may interpret the TDRA index value of <NUM> as a value of <NUM>, and may identify a TDRA (e.g., a set of TDRA parameters) for the cell corresponding to the value of <NUM> (e.g., a row index of <NUM>, or a TDRA index value of <NUM> corresponding to a row index of <NUM>, among other examples).

Alternatively, when the single TDRA value corresponds to a row index that is greater than a number of rows in a TDRA table configured for a cell, then the UE <NUM> and/or the base station <NUM> may schedule a communication (e.g., may transmit or receive a scheduled communication) using a specific TDRA (e.g., a specific set of TDRA parameters) for that cell. The specific TDRA may be, for example, a TDRA included in a first row of the TDRA table configured for the cell (e.g., a TDRA indicated by a row index of <NUM>) or a TDRA included in a last row of the TDRA table configured for the cell, among other examples.

As shown by reference number <NUM>, in some aspects, the single DCI message includes multiple TDRA index values in corresponding multiple TDRA fields. In this case, each TDRA index value may correspond to a different cell of multiple cells scheduled by the single DCI message. The example single DCI message of <FIG> includes multiple fields (e.g., two fields) dedicated to carrying bits of respective TDRA index values. By using multiple TDRA fields and corresponding multiple TDRA index values, scheduling flexibility may be increased.

In example <NUM>, a first TDRA index value, in a first TDRA field associated with a first cell (Cell <NUM>), has a value of <NUM>. As shown by reference number <NUM>, the first TDRA index value of <NUM> indicates a first set of TDRA parameters for the first cell (Cell <NUM>), which may be associated with a row index of <NUM> in a TDRA table configured for the first cell. As further shown, a second TDRA index value, in a second TDRA field associated with a second cell (Cell <NUM>), has a value of <NUM>. As shown by reference number <NUM>, the second TDRA index value of <NUM> indicates a second set of TDRA parameters for the second cell (Cell <NUM>), which may be associated with a row index of <NUM> in a TDRA table configured for the second cell. In some aspects, the same TDRA table may be configured for different cells. In some aspects, different TDRA tables may be configured for different cells. In some aspects, one or more row indexes of different TDRA tables may be associated with the same set of TDRA parameters. In some aspects, one or more row indexes of different TDRA tables may be associated with different sets of TDRA parameters. In some aspects, a number of bits included in a TDRA field for a cell may be based at least in part on the number of rows of a TDRA table configured for that cell (e.g., <NUM> bits for four rows, <NUM> bits for eight rows, or <NUM> bits for sixteen rows, among other examples).

In some aspects, the size of the single DCI message may be limited. In this case, the single DCI message may include multiple TDRA index values, in corresponding multiple TDRA fields, only if a number of cells scheduled by the single DCI message is less than or equal to a threshold (e.g., two, among other examples). In this way, the size limit of the single DCI message may be satisfied.

As shown by reference number <NUM>, in some aspects, the single DCI message may include a single TDRA index value within a single TDRA field, which may conserve signaling overhead and may conserve network resources. In example <NUM>, the single TDRA index value indicates multiple sets of TDRA parameters associated with a single row index of a single TDRA table. Each set of TDRA parameters, of the multiple sets of TDRA parameters, may correspond to a different cell of the multiple cells scheduled by the single DCI message. For example, as shown by reference number <NUM>, the single TDRA index value (shown as <NUM>) may indicate a first set of TDRA parameters <NUM> (e.g., a K<NUM> value of <NUM>, an S value of <NUM>, and anL value of <NUM>) for a first scheduled cell (e.g., Cell <NUM>) and may also indicate a second set of TDRA parameters <NUM> (e.g., a K<NUM> value of <NUM>, an S value of <NUM>, and an L value of <NUM>) for a second scheduled cell (e.g., Cell <NUM>). The first set of TDRA parameters and the second set of TDRA parameters may be included in a single TDRA table <NUM>. In some aspects, the number of bits in the TDRA field is based at least in part on the number of rows in the single TDRA table <NUM>.

As shown by reference number <NUM>, the base station <NUM> may transmit, to the UE <NUM>, a configuration (e.g., in an RRC message) that indicates a mapping of scheduled cells and sets of TDRA parameters. In example <NUM>, the base station <NUM> indicates that a first set of TDRA parameters associated with a row index (shown as TDRA parameters associated with the "First" cell in the TDRA table <NUM>) is mapped to Cell <NUM>, and that a second set of TDRA parameters associated with the row index (shown as TDRA parameters associated with the "Second" cell in the TDRA table <NUM>) is mapped to Cell <NUM>. In some aspects, rather than mapping sets of TDRA parameters associated with the same row index to specific cells, the configuration may indicate a mapping that is based at least in part on cell identifiers of the scheduled cells. For example, a cell with the lowest cell identifier may be mapped to the first set of TDRA parameters associated with a row index, a cell with the next-lowest cell identifier (or highest cell identifier, in the case of two scheduled cells) may be mapped to the second set of TDRA parameters associated with the row index, and so on. In some aspects, the mapping may be specified in a wireless communication standard. This may enable increased scheduling flexibility while also reducing signaling overhead.

As shown by reference number <NUM>, in some aspects, the single DCI message includes a single TDRA index value within a single TDRA field, which may reduce signaling overhead and may conserve network resources. In example <NUM>, the single TDRA index value indicates a single set of TDRA parameters, in a single TDRA table, that is used for a reference cell. In some aspects, the single set of TDRA parameters may correspond to a single row index of a single TDRA table <NUM>. The single TDRA table <NUM> may be a TDRA table that is configured for the reference cell. For example, as shown by reference number <NUM>, a single TDRA index value of <NUM> indicates a row index of <NUM> in the single TDRA table <NUM> that is configured for a reference cell. For example, the communications on the reference cell may be scheduled according to a K<NUM> value of <NUM>, an S value of <NUM>, and an L value of <NUM>, as shown.

The reference cell may or may not be included in the multiple cells scheduled by the single DCI message. In some aspects, the reference cell may be a cell via which the single DCI message is received (e.g., a scheduling cell). In some aspects, the reference cell may be a cell, of multiple cells scheduled by the single DCI message, that has a smallest cell identifier or a smallest SCS among all cells of the multiple cells (or that has a smallest cell identifier or a smallest SCS among a set of cells that includes the multiple cells and that includes the scheduling cell). In some aspects, the reference cell may be a cell, of multiple cells scheduled by the single DCI message, that has a largest cell identifier or a largest SCS among all cells of the multiple cells (or that has a largest cell identifier or a largest SCS among a set of cells that includes the multiple cells and that includes the scheduling cell). In some aspects, the reference cell may be configured by the base station <NUM>. In some aspects, the reference cell may be specified according to a wireless communication standard.

As shown by reference number <NUM>, the UE <NUM> (and/or the base station <NUM>) may determine a set of TDRA parameters for a cell, of the multiple cells scheduled by the single DCI message, other than the reference cell. For example, the UE <NUM> (and/or the base station <NUM>) may determine the set of TDRA parameters for a scheduled cell other than the reference cell (e.g., for a non-reference cell) based at least in part on performing a calculation using one or more modification parameters and the single set of TDRA parameters determined for the reference cell. The calculation may include, for example, applying an offset to a parameter of the single set of TDRA parameters (e.g., applying an offset of <NUM> to a K<NUM> value of <NUM> for the reference cell to determine a K<NUM> value of <NUM> for the non-reference cell, among other examples), applying a scaling factor to a parameter of the single set of TDRA parameters (e.g., applying a scaling factor of <NUM> to an S value of <NUM> for the reference cell to determine an S value of <NUM> for the non-reference cell, or applying a scaling factor of <NUM> to an L value of <NUM> for the reference cell to determine an L value of <NUM> for the non-reference cell, among other examples), and/or the like.

As shown by reference number <NUM>, in some aspects, the one or more modification parameters (e.g., an offset, a scaling factor, and/or the like) may be indicated in a configuration from the base station <NUM>. In some aspects, the one or more modification parameters may be specified according to a wireless communication standard. In this way, signaling overhead may be reduced while also enabling scheduling flexibility.

<FIG> is a diagram illustrating an example process <NUM> performed, for example, by a UE, in accordance with the present invention. Example process <NUM> is an example where the UE (e.g., UE <NUM>) performs operations associated with time domain resource assignment for multiple cells scheduled by a single DCI message.

As shown in <FIG>, in some aspects, process <NUM> includes receiving a single DCI message that schedules communications on multiple cells, wherein the single DCI message indicates multiple TDRAs corresponding to the multiple cells, wherein each of the multiple TDRAs corresponds to a different scheduled communication (block <NUM>). For example, the UE (e.g., using receive processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may receive a single DCI message that schedules communications on multiple cells, as described above. The single DCI message indicates multiple TDRAs corresponding to the multiple cells, wherein each of the multiple TDRAs corresponds to a different scheduled communication.

As further shown in <FIG>, process <NUM> includes communicating using the multiple TDRAs corresponding to the multiple cells, wherein the communicating comprises: transmitting the communications using the multiple TDRAs corresponding to the multiple cells, or receiving the communications using the multiple TDRAs corresponding to the multiple cells (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 communicate using the multiple TDRAs corresponding to the multiple cells, as described above. In some aspects, the communicating comprises transmitting the communications using the multiple TDRAs corresponding to the multiple cells. In some aspects, the communicating comprises receiving the communications using the multiple TDRAs corresponding to the multiple cells.

In a first aspect, the communications are downlink communications, the multiple TDRAs are multiple downlink TDRAs, and the communicating comprises receiving the downlink communications using the multiple TDRAs corresponding to the multiple cells.

In a second aspect, alone or in combination with the first aspect, the communications are uplink communications, the multiple TDRAs are multiple uplink TDRAs, and the communicating comprises transmitting the uplink communications using the multiple TDRAs corresponding to the multiple cells.

According to the invention, the single DCI message includes a single TDRA index value within a single TDRA field, and the single TDRA index value indicates a single set of TDRA parameters, in a single TDRA table, that is to be used for all of the multiple cells, wherein the single TDRA table is different from all TDRA tables configured for multiple cells.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process <NUM> includes receiving a configuration that indicates the single TDRA table to be used for single DCI scheduling of multiple cells.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the single TDRA table is a TDRA table associated with: a cell on which the single DCI message is received; a cell, of the multiple cells, that has a smallest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a largest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a smallest sub-carrier spacing among all cells of the multiple cells; or a cell, of the multiple cells, that has a largest sub-carrier spacing among all cells of the multiple cells.

According to the invention and in an alternative to the previous feature, the single DCI message includes a single TDRA index value within a single TDRA field, the single TDRA index value indicates multiple sets of TDRA parameters in corresponding multiple TDRA tables, and each set of TDRA parameters corresponds to a different cell of the multiple cells, wherein the multiple sets of TDRA parameters are associated with a same row index in different TDRA tables.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, a number of bits included in the single TDRA field is based at least in part on a number of rows in a TDRA table of the multiple TDRA tables, and all TDRA tables of the multiple TDRA tables include a same number of rows.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, a number of bits included in the single TDRA field is based at least in part on a maximum number of rows permitted in a TDRA table of the multiple TDRA tables.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, a number of bits included in the single TDRA field is based at least in part on a smallest number of rows in a TDRA table compared to all other TDRA tables configured for the multiple cells.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, a number of bits included in the single TDRA field is based at least in part on a largest number of rows in a TDRA table compared to all other TDRA tables configured for the multiple cells.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, a number of bits included in the single TDRA field is based at least in part on a number of rows in a TDRA table associated with a specific cell.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the specific cell is: a cell on which the single DCI message is received; a cell, of the multiple cells, that has a smallest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a largest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a smallest sub-carrier spacing among all cells of the multiple cells; or a cell, of the multiple cells, that has a largest sub-carrier spacing among all cells of the multiple cells.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the single TDRA index value corresponds to a row index that is greater than a number of rows in a TDRA table associated with a cell of the multiple cells.

In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, the UE is configured to refrain from scheduling a communication, of the communications scheduled by the single DCI message, in the cell based at least in part on a determination that the single TDRA index value corresponds to a row index that is greater than the number of rows in the TDRA table associated with the cell.

In a seventeenth aspect, alone or in combination with one or more of the first through sixteenth aspects, the UE is configured to schedule a communication, of the communications scheduled by the single DCI message, using a TDRA for the cell based at least in part on a determination that the single TDRA index value corresponds to a row index that is greater than the number of rows in the TDRA table associated with the cell, and the TDRA is determined based at least in part on performing a modulo operation using the single TDRA index value and the number of rows in the TDRA table associated with the cell.

In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, the UE is configured to schedule a communication, of the communications scheduled by the single DCI message, using a specific TDRA for the cell based at least in part on a determination that the single TDRA index value corresponds to a row index that is greater than the number of rows in the TDRA table associated with the cell.

In a nineteenth aspect, alone or in combination with one or more of the first through eighteenth aspects, the specific TDRA corresponds to a first row of the TDRA table or a last row of the TDRA table.

In a twentieth aspect, alone or in combination with one or more of the first through nineteenth aspects, a number of bits included in the single TDRA field is based at least in part on at least one of: a number of rows in a TDRA table of the multiple TDRA tables, wherein all TDRA tables of the multiple TDRA tables include a same number of rows, a maximum number of rows permitted in a TDRA table of the multiple TDRA tables, a smallest number of rows in a TDRA table compared to all other TDRA tables configured for the multiple cells, a largest number of rows in a TDRA table compared to all other TDRA tables configured for the multiple cells, or a number of rows in a TDRA table associated with a specific cell.

In a twenty-first aspect, alone or in combination with one or more of the first through twentieth aspects, the single DCI message includes multiple TDRA index values in corresponding multiple TDRA fields, and each TDRA index value corresponds to a different cell of the multiple cells.

In a twenty-second aspect, alone or in combination with one or more of the first through twenty-first aspects, a number of cells, included in the multiple cells, is less than or equal to a threshold.

In a twenty-third aspect, alone or in combination with one or more of the first through twenty-second aspects, the single DCI message includes a single TDRA index value within a single TDRA field, the single TDRA index value indicates multiple sets of TDRA parameters associated with a single row index of a single TDRA table, and each set of TDRA parameters corresponds to a different cell of the multiple cells.

In a twenty-fourth aspect, alone or in combination with one or more of the first through twenty-third aspects, process <NUM> includes receiving a configuration that indicates a mapping between the multiple cells and the multiple sets of TDRA parameters.

In a twenty-fifth aspect, alone or in combination with one or more of the first through twenty-fourth aspects, process <NUM> includes determining a mapping between the multiple cells and the multiple sets of TDRA parameters based at least in part on cell identifiers of the multiple cells.

In a twenty-sixth aspect, alone or in combination with one or more of the first through twenty-fifth aspects, the single DCI message includes a single TDRA index value within a single TDRA field, and the single TDRA index value indicates a single set of TDRA parameters, in a single TDRA table, that is to be used for a reference cell of the multiple cells.

In a twenty-seventh aspect, alone or in combination with one or more of the first through twenty-sixth aspects, the reference cell is: a cell on which the single DCI message is received; a cell, of the multiple cells, that has a smallest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a largest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a smallest sub-carrier spacing among all cells of the multiple cells; or a cell, of the multiple cells, that has a largest sub-carrier spacing among all cells of the multiple cells.

In a twenty-eighth aspect, alone or in combination with one or more of the first through twenty-seventh aspects, process <NUM> includes determining a set of TDRA parameters for a cell, of the multiple cells, other than the reference cell, based at least in part on performing a calculation using one or more modification parameters and the single set of TDRA parameters.

In a twenty-ninth aspect, alone or in combination with one or more of the first through twenty-eighth aspects, the calculation includes at least one of applying an offset to a parameter of the single set of TDRA parameters, applying a scaling factor to a parameter of the single set of TDRA parameters, or a combination thereof.

In a thirtieth aspect, alone or in combination with one or more of the first through twenty-ninth aspects, process <NUM> includes receiving a configuration that indicates the one or more modification parameters.

<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>) performs operations associated with time domain resource assignment for multiple cells scheduled by a single DCI message.

As shown in <FIG>, in some aspects, process <NUM> may include transmitting a single DCI message that schedules communications on multiple cells, wherein the single DCI message indicates multiple TDRAs corresponding to the multiple cells, and wherein each of the multiple TDRAs corresponds to a different scheduled communication (block <NUM>). For example, the base station (e.g., using transmit processor <NUM>, controller/processor <NUM>, memory <NUM>, and/or the like) may transmit a single DCI message that schedules communications on multiple cells, as described above. In some aspects, the single DCI message indicates multiple TDRAs corresponding to the multiple cells. In some aspects, each of the multiple TDRAs corresponds to a different scheduled communication.

As further shown in <FIG>, in some aspects, process <NUM> may include communicating using the multiple TDRAs corresponding to the multiple cells, wherein the communicating comprises: transmitting the communications using the multiple TDRAs corresponding to the multiple cells, or receiving the communications using the multiple TDRAs corresponding to the multiple cells (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 communicate using the multiple TDRAs corresponding to the multiple cells, as described above. In some aspects, the communicating comprises transmitting the communications using the multiple TDRAs corresponding to the multiple cells. In some aspects, the communicating comprises receiving the communications using the multiple TDRAs corresponding to the multiple cells.

In a first aspect, the communications are downlink communications, the multiple TDRAs are multiple downlink TDRAs, and the communicating comprises transmitting the downlink communications using the multiple TDRAs corresponding to the multiple cells.

In a second aspect, alone or in combination with the first aspect, the communications are uplink communications, the multiple TDRAs are multiple uplink TDRAs, and the communicating comprises receiving the uplink communications using the multiple TDRAs corresponding to the multiple cells.

In a third aspect, alone or in combination with one or more of the first and second aspects, the single DCI message includes a single TDRA index value within a single TDRA field, and the single TDRA index value indicates a single set of TDRA parameters, in a single TDRA table, that is to be used for all of the multiple cells.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process <NUM> includes transmitting a configuration that indicates the single TDRA table to be used for single DCI scheduling of multiple cells.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the single TDRA table is different from all TDRA tables configured for the multiple cells.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the single TDRA table is a TDRA table associated with: a cell on which the single DCI message is transmitted; a cell, of the multiple cells, that has a smallest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a largest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a smallest sub-carrier spacing among all cells of the multiple cells; or a cell, of the multiple cells, that has a largest sub-carrier spacing among all cells of the multiple cells.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the single DCI message includes a single TDRA index value within a single TDRA field, and the single TDRA index value indicates multiple sets of TDRA parameters in corresponding multiple TDRA tables, each set of TDRA parameters corresponds to a different cell of the multiple cells.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the multiple sets of TDRA parameters are associated with a same row index in different TDRA tables.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the specific cell is: a cell on which the single DCI message is transmitted; a cell, of the multiple cells, that has a smallest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a largest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a smallest sub-carrier spacing among all cells of the multiple cells; or a cell, of the multiple cells, that has a largest sub-carrier spacing among all cells of the multiple cells.

In a sixteenth aspect, alone or in combination with one or more of the first through fifteenth aspects, the base station is configured to refrain from scheduling a communication, of the communications scheduled by the single DCI message, in the cell based at least in part on a determination that the single TDRA index value corresponds to a row index that is greater than the number of rows in the TDRA table associated with the cell.

In a seventeenth aspect, alone or in combination with one or more of the first through sixteenth aspects, the base station is configured to schedule a communication, of the communications scheduled by the single DCI message, using a TDRA for the cell based at least in part on a determination that the single TDRA index value corresponds to a row index that is greater than the number of rows in the TDRA table associated with the cell, and the TDRA is determined based at least in part on performing a modulo operation using the single TDRA index value and the number of rows in the TDRA table associated with the cell.

In an eighteenth aspect, alone or in combination with one or more of the first through seventeenth aspects, the base station is configured to schedule a communication, of the communications scheduled by the single DCI message, using a specific TDRA for the cell based at least in part on a determination that the single TDRA index value corresponds to a row index that is greater than the number of rows in the TDRA table associated with the cell.

In a twenty-fourth aspect, alone or in combination with one or more of the first through twenty-third aspects, process <NUM> includes transmitting a configuration that indicates a mapping between the multiple cells and the multiple sets of TDRA parameters.

In a twenty-seventh aspect, alone or in combination with one or more of the first through twenty-sixth aspects, the reference cell is: a cell on which the single DCI message is transmitted; a cell, of the multiple cells, that has a smallest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a largest cell identifier among all cells of the multiple cells; a cell, of the multiple cells, that has a smallest sub-carrier spacing among all cells of the multiple cells; or a cell, of the multiple cells, that has a largest sub-carrier spacing among all cells of the multiple cells.

In a thirtieth aspect, alone or in combination with one or more of the first through twenty-ninth aspects, process <NUM> includes transmitting a configuration that indicates the one or more modification parameters.

Claim 1:
A method of wireless communication performed by a user equipment, UE, comprising:
receiving (<NUM>) a single downlink control information, DCI, message that schedules communications on multiple cells, wherein the single DCI message indicates multiple time domain resource assignments, TDRAs, corresponding to the multiple cells, wherein each of the multiple TDRAs corresponds to a different scheduled communication;
wherein the single DCI message includes a single TDRA index value within a single TDRA field, wherein the single TDRA index value indicates:
a single set of TDRA parameters, in a single TDRA table, that is to be used for all of the multiple cells, wherein the single TDRA table is different from all TDRA tables configured for the multiple cells; or
multiple sets of TDRA parameters in corresponding multiple TDRA tables, wherein each set of TDRA parameters corresponds to a different cell of the multiple cells, wherein the multiple sets of TDRA parameters are associated with a same row index in different TDRA tables;
and
communicating (<NUM>) using the multiple TDRAs corresponding to the multiple cells, wherein the communicating comprises:
transmitting the communications using the multiple TDRAs corresponding to the multiple cells, or
receiving the communications using the multiple TDRAs corresponding to the multiple cells.