HARQ-ACK codebook decision technique

Abstract

A description is given of a technique for determining a HARQ-ACK codebook. An example wireless communication method includes a communication device receiving control information from a cell including a field including a value, the value indicating a current number of control channel monitoring opportunities associated with the cell and to be monitored by the communication device, the current number of control channel monitoring opportunities being part of a set of numbers associated with a set of control channel monitoring opportunities in which a control channel has been or will be received from the cell, and transmitting one or more hybrid automatic repeat request acknowledgement (HARQ-ACK) information bits indicating that a shared channel associated with the control channel monitoring opportunity has been received by the communication device or that the communication device has received the control information.

Description

[Technical field]

[0001] TECHNICAL FIELD This disclosure is directed generally to digital wireless communications. [Background technology]

[0002] background Wireless communication technologies are moving the world towards an increasingly connected and networked society. Compared to existing wireless networks, next generation systems and wireless communication technologies will be required to address the characteristics of a much wider range of use cases and provide a more complex and sophisticated range of access requirements and flexibility.

[0003] Long Term Evolution (LTE) is a wireless communication standard for mobile devices and data terminals developed by the 3rd Generation Partnership Project (3GPP®). LTE Advanced (LTE-A) is an enhancement of the LTE standard. The fifth generation wireless system, known as 5G, evolves the LTE and LTE-A wireless standards to address higher data rates, greater numbers of connections, ultra-low latency, high reliability, and other emerging business needs. Summary of the Invention [Means for solving the problem]

[0004] overview Techniques for transmitting and receiving HARQ-ACK information bits are disclosed.

[0005] An example wireless communication method includes receiving, by a communications device, control information from a cell, the control information including a field including a value, the value indicating a current number of control channel monitoring opportunities associated with the cell and to be monitored by the communications device, the current number of control channel monitoring opportunities being part of a set of numbers associated with a set of control channel monitoring opportunities in which a control channel has been or will be received from the cell, and transmitting one or more hybrid automatic repeat request acknowledgement (HARQ-ACK) information bits indicating that a shared channel associated with the control channel monitoring opportunity has been received by the communications device or that the communications device has received the control information.

[0006] In an embodiment, the value of the field indicates a current number of control channel monitoring opportunities associated with a cell, the cell being a scheduling cell for a scheduled cell in a group of scheduled cells. In an embodiment, the value of the field indicates a current number of control channel monitoring opportunities associated with a cell and one or more other cells, the cell being a scheduling cell for a group of scheduled cells including the cell and one or more other cells. In an embodiment, the field is based on or indicates a control channel monitoring opportunity index of a control channel monitoring opportunity, or a shared channel reception start time of a shared channel and a control channel monitoring opportunity index of a control channel monitoring opportunity, or a shared channel reception start time, a serving cell index, and a control channel monitoring opportunity index of a control channel monitoring opportunity. In an embodiment, the method further includes receiving second control information including a second field having a second value indicating a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell, and transmitting one or more HARQ-ACK information bits includes obtaining multiplexed HARQ-ACK information bits by multiplexing a plurality of HARQ-ACK information bits indicating whether a set of shared channels has been received by the communication device and / or that the communication device has received the control information, the plurality of HARQ-ACK information bits including one or more HARQ-ACK information bits, and transmitting the multiplexed HARQ-ACK information bits on an uplink shared channel scheduled by the control channel including the second field.

[0007] In an embodiment, the second value of the second field indicates a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell that is the reference cell, and the communications device determines one or more second values ​​associated with the one or more other cells based on the second value of the second field, each of the one or more second values ​​indicating a total number of control channel monitoring opportunities in one of the sets of control channel monitoring opportunities associated with one of the one or more other cells. In an embodiment, the second field of the second value is a Total Downlink Allocation Indicator (T-DAI) field of the cell, and the communications device determines a third value of a second T-DAI field based on the second value of the T-DAI field, the third value of the second T-DAI field indicating a second total number of control channel monitoring opportunities in a second set of control channel monitoring opportunities associated with the second cell and to be monitored by the communications device, the second value being referred to as Y and the third value being referred to as X. In one embodiment, X is equal to the maximum value (X1) of a series of numbers associated with a set of control channel monitoring opportunities during which a control channel has been or will be received from the cell.

[0008] In an embodiment, X1 is a maximum value in a set of numbers associated with a set of control channel monitoring opportunities in which a control channel has been or will be received from the cell, and in response to X being greater than X1, the communications device transmits a negative acknowledgement (NACK) value of the HARQ-ACK information bits corresponding to a last X-X1 Counter Downlink Assignment Indicator (C-DAI) value in a HARQ-ACK codebook for at least a portion of a second set of control channel monitoring opportunities. In an embodiment, X=p*Y, where p is a scaling factor and p is an integer greater than 0. In an embodiment, [ka] where p is a scaling factor, p is an integer or a decimal, and p is greater than 0. In an embodiment, p is determined by the subcarrier spacing, the numerology corresponding to the subcarrier spacing, the total number of control channel monitoring opportunities, or the physical downlink control channel (PDCCH) monitoring capability, or p is configured by the base station.

[0009] In one embodiment, X=Y+q, where q is an integer, and q is determined by the subcarrier spacing, the numerology corresponding to the subcarrier spacing, the total number of control channel monitoring opportunities, or the PDCCH monitoring capability, or q is configured by the base station. In one embodiment, (X-1) mod T+1=(Y-1) mod T+1, where T and N are integers. In one embodiment, T is 2 N and N is the number of bits in the field. In an embodiment, X, Y, and N are integers greater than 0. In an embodiment, X is greater than or equal to the total number of control channel monitoring opportunities in the set of control channel monitoring opportunities in which the control channel was received. In an embodiment, the cell is a reference cell, and the communication device determines not to generate or transmit feedback to the second cell in response to the second value of the T-DAI field being greater than zero and the communication device determining that there is no reception of one or more control channels from the second cell. In an embodiment, the cell is a reference cell, and the communication device generates and transmits one bit of negative acknowledgement (NACK) information to the second cell in response to the second value of the T-DAI field being greater than M, where M is an integer greater than zero, and the communication device determining that there is no reception of one or more control channels from the second cell.

[0010] In an embodiment, the cell is a reference cell, and in response to determining that there is no reception of one or more control channels from the cell, the communication device determines not to generate or transmit feedback to the cell, and the communication device generates and transmits feedback to the second cell based on a value indicative of a second current number of second control channel monitoring opportunities associated with the second cell. In an embodiment, the cell is a reference cell, and the method further includes receiving second control information including a second field having a second value indicative of a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell, and in response to the second value being equal to zero, the communication device determines not to generate or transmit feedback to the cell, and the communication device generates and transmits feedback to the second cell based on a value indicative of a second current number of second control channel monitoring opportunities associated with the second cell. In an embodiment, the field includes a counter downlink allocation indicator (C-DAI) field. In an embodiment, the control information includes downlink control information (DCI).

[0011] Another example wireless communication method includes transmitting, by a network device, control information including a field including a value, the value indicating a current number of control channel monitoring opportunities associated with a cell of the network device and to be monitored by the communication device, the current number of control channel monitoring opportunities being part of a set of numbers associated with a set of control channel monitoring opportunities in which a control channel has been or will be transmitted from the cell to the communication device; and receiving one or more hybrid automatic repeat request acknowledgement (HARQ-ACK) information bits indicating whether a shared channel associated with the control channel monitoring opportunity has been received by the communication device or that the communication device has received the control information.

[0012] In an embodiment, the value of the field indicates a current number of control channel monitoring opportunities associated with a cell, the cell being a scheduling cell for a scheduled cell in a group of scheduled cells. In an embodiment, the value of the field indicates a current number of control channel monitoring opportunities associated with a cell and one or more other cells, the cell being a scheduling cell for a group of scheduled cells including the cell and one or more other cells. In an embodiment, the field is based on or indicates a control channel monitoring opportunity index of a control channel monitoring opportunity, or a shared channel reception start time of a shared channel and a control channel monitoring opportunity index of a control channel monitoring opportunity, or a shared channel reception start time, a serving cell index, and a control channel monitoring opportunity index of a control channel monitoring opportunity. In an embodiment, the method further includes transmitting second control information including a second field including a second value indicating a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell, and receiving one or more HARQ-ACK information bits includes receiving multiplexed HARQ-ACK information bits in an uplink shared channel scheduled by the control channel including the second field, the multiplexed HARQ-ACK information bits including a plurality of HARQ-ACK information bits indicating whether the set of shared channels has been received by the communication device and / or that the communication device has received control information, as well as one or more HARQ-ACK information bits.

[0013] In an embodiment, the second value of the second field indicates a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell that is the reference cell. In an embodiment, the second field of the second value is a Total Downlink Allocation Indicator (T-DAI) field of the cell. In an embodiment, the field includes a Counter Downlink Allocation Indicator (C-DAI) field. In an embodiment, the control information includes Downlink Control Information (DCI).

[0014] In yet another exemplary aspect, the methods described above are embodied in the form of processor executable code and stored in a non-transitory computer readable storage medium, the code contained in the computer readable storage medium, when executed by a processor, causing the processor to perform the methods described in this patent document.

[0015] In yet another exemplary embodiment, a device configured or operable to perform the above-described method is disclosed.

[0016] These and other aspects and implementations thereof are described in more detail in the drawings, description, and claims. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is an example of the use of the Counter Downlink Allocation Indicator (C-DAI) for self-carrier scheduling.

[0018] [Diagram 2] FIG. 2 shows an example of the use of C-DAI for cross-carrier scheduling. [Diagram 3] FIG. 3 shows an example of the use of C-DAI for cross-carrier scheduling.

[0019] [Figure 4] FIG. 4 shows an example of the use of the Total Downlink Allocation Indicator (T-DAI) for a reference cell. [Diagram 5] FIG. 5 shows an example of the use of the Total Downlink Allocation Indicator (T-DAI) for a reference cell.

[0020] [Figure 6] FIG. 6 illustrates an example of a wireless communication system including a base station (BS) and user equipment (UE) according to some implementations of the disclosed technology.

[0021] [Figure 7] FIG. 7 illustrates an example block diagram of a hardware platform that may be part of a network or communication device.

[0022] [Figure 8] FIG. 8 shows an example flow chart for transmitting HARQ-ACK information bits.

[0023] [Figure 9] FIG. 9 shows an example flow chart for receiving a HARQ-ACK information bit. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Detailed Description In existing 5G specifications, two different methods of determining a Hybrid Automatic Repeat Request-Acknowledgement (HARQ-ACK) codebook are commonly used. The first method is to determine the HARQ-ACK codebook based on a semi-static configuration, such as a time division duplex (TDD) configuration and a time domain resource allocation (TDRA) configuration. The second method is to determine the HARQ-ACK codebook based on a downlink allocation index (DAI) value across different cells. The first method may have a large overhead in scenarios such as when a UE is configured with multiple cells. The second method may require tight (or strict) and frequent coordination between different cells, since DAI values ​​may be set across different cells. To address at least these technical challenges with existing technologies, this patent document describes a HARQ-ACK codebook determination method that can reduce overhead and, in some embodiments, does not require frequent and strict coordination between different cells.

[0025] The following examples of headings of various sections are used to facilitate understanding of the disclosed subject matter and are not intended to limit the scope of the claimed subject matter in any way. Thus, one or more features of one example section can be combined with one or more features of another example section. Furthermore, although 5G terminology is used for clarity of explanation, the technology disclosed herein is not limited to 5G technology alone and can be used in wireless systems implementing other protocols.

[0026] I. Embodiment 1: Overview

[0027] The UE may receive a value of a Counter Downlink Allocation Indicator (C-DAI) field of the DCI indicating the cumulative number of PDCCH monitoring opportunities up to the current PDCCH monitoring opportunity for one cell. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including the PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in a situation where the PDCCH may not schedule a PDSCH) to indicate whether the UE has received a PDSCH in a time slot associated with the PDCCH monitoring opportunity or to indicate whether the UE has received a DCI carried by the PDCCH. In this patent document, the term "cumulative number" may refer to the current value of the counter.

[0028] In an embodiment, a PDSCH reception associated with a DCI may refer to a PDSCH reception received by a UE that is scheduled for a DCI.

[0029] In an embodiment, the HARQ-ACK information bit associated with a DCI may refer to a HARQ-ACK information bit that is not a response to a PDSCH reception, for example, a DCI indicating an SPS PDSCH release, a DCI indicating an SCell dormant state, etc.

[0030] In the case of self-carrier scheduling, the base station transmits DCI in a cell and the UE monitors DCI in the same cell, and the PDSCH reception or HARQ-ACK information bit is also for this cell.

[0031] For cross-carrier scheduling, the PDCCH and the corresponding scheduled PDSCH are on different cells. Therefore, there may be at least two options for self-carrier scheduling and cross-carrier scheduling.

[0032] Option 1: The value of the C-DAI field of the DCI indicates the cumulative number of PDCCH monitoring opportunities up to the current PDCCH monitoring opportunity for one scheduled cell. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including the PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in a situation where the PDCCH may not schedule a PDSCH) to indicate whether the UE has received a PDSCH in a time slot associated with the PDCCH monitoring opportunity or to indicate whether the UE has received a DCI carried by the PDCCH.

[0033] Option 2: The value of the C-DAI field of the DCI indicates the cumulative number of PDCCH monitoring opportunities up to the current PDCCH monitoring opportunity of the scheduling cell for the group of scheduled cells. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including the PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in a situation where the PDCCH may not schedule a PDSCH) to indicate whether the UE has received a PDSCH in a time slot associated with the PDCCH monitoring opportunity or to indicate whether the UE has received a DCI carried by the PDCCH.

[0034] The values ​​of the C-DAI field of the DCI are ordered based on one of the following options:

[0035] Option 1: PDCCH monitoring opportunity index

[0036] For example, the values ​​of the C-DAI field of the DCI are arranged in ascending order of the PDCCH monitoring opportunity index.

[0037] Option 2: PDSCH reception start time and PDCCH monitoring opportunity index

[0038] For example, the values ​​of the C-DAI field of the DCI are first arranged in order of increasing PDSCH reception start times for PDSCH reception scheduled from the same PDCCH monitoring occasion, and then arranged in ascending order of the index of the PDCCH monitoring occasion.

[0039] Option 3: PDSCH reception start time, serving cell index, PDCCH monitoring opportunity index

[0040] For example, the values ​​of the C-DAI field of the DCI are first arranged in order of increasing PDSCH reception start time for PDSCH reception in the same serving cell scheduled from the same PDCCH monitoring opportunity, then arranged in ascending order of serving cell index, and further arranged in ascending order of PDCCH monitoring opportunity index.

[0041] Figure 1 is an example of C-DAI in the case of self-carrier scheduling. In self-carrier scheduling, PDCCH and PDSCH are transmitted in the same cell. C-DAI values ​​are tallied separately for each cell. The PDCCH corresponding to C-DAI=2 in cell 2 may refer to the PDCCH carrying DCI indicating SPS PDSCH release.

[0042] Figure 2 is an example of C-DAI in case of cross-carrier scheduling (e.g., first option 1 in section 1 of this patent document). In cross-carrier scheduling, PDCCH and PDSCH can be transmitted in different cells. In Figure 2, cell 0 schedules PDSCH for itself and PDSCH for cell 1. Cell 2 is self-scheduling. In this case, C-DAI values ​​are aggregated separately for each scheduled cell.

[0043] Figure 3 is another example of C-DAI in case of cross-carrier scheduling (e.g., first option 2 in section 1 of this patent document). In Figure 3, cell 0 schedules PDSCH for itself and schedules PDSCH for cell 1. Cell 2 is self-scheduling. In this case, the C-DAI is aggregated per scheduling cell for all scheduled cells (i.e., cell 0 and cell 1) since both PDCCH for cell 0 and PDCCH for cell 1 are transmitted on cell 0.

[0044] In one embodiment, Table 1 (below) shows an example of the relationship between PDCCH monitoring occasions (indicated by PDCCH monitoring index), received PDCCH, C-DAI values, and DCI fields. [Table 1]

[0045] II. Embodiment 2: Method 1: T-DAI

[0046] The UE generates HARQ-ACK feedback based on the C-DAI value. Taking FIG. 1 as an example, the UE generates HARQ-ACK feedback for the four PDSCHs of cell 0. If the PDCCH corresponding to C-DAI=2 is missed by the UE, the UE can find out or determine this because the C-DAI value of the received PDCCH is not consecutive. However, if the PDCCH corresponding to C-DAI=4 in this example is missed by the UE, the UE cannot find out or determine this because the C-DAI value of the received PDCCH is still consecutive. To overcome this, a total DAI (T-DAI) value can be introduced. In an embodiment, the C-DAI can schedule the DL PDSCH in DCI format, while the T-DAI can schedule the UL PUSCH in DCI format. In an embodiment, both the C-DAI and the T-DAI can schedule the DL PDSCH in DCI format.

[0047] T-DAI can be defined as any of the following:

[0048] Option 1: The value of T-DAI in the DCI indicates, for each scheduling cell, the total number of PDCCH monitoring opportunities up to the current PDCCH monitoring opportunity, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI, and the HARQ-ACK information bit is transmitted by the UE to indicate whether the UE has received a PDSCH in the time slot associated with the PDCCH monitoring opportunity (e.g., in a situation where the PDCCH may not schedule a PDSCH) or to indicate whether the UE has received a DCI carried by the PDCCH. For example, if the UE is configured for three cells, the DCI includes three T-DAI fields. Each T-DAI field indicates a value of T-DAI for each cell.

[0049] Option 2: The T-DAI value of the DCI indicates the total number of PDCCH monitoring opportunities up to the current PDCCH monitoring opportunity for each scheduled cell. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including the PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in a situation where the PDCCH may not schedule a PDSCH) to indicate whether the UE received a PDSCH in a time slot associated with the PDCCH monitoring opportunity or to indicate whether the UE received a DCI carried by the PDCCH.

[0050] Option 3: The T-DAI value of the DCI indicates the total number of PDCCH monitoring opportunities up to the current PDCCH monitoring opportunity of the cell group(s). In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including the PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in a situation where the PDCCH may not schedule the PDSCH) to indicate whether the UE has received a PDSCH in the time slot associated with the PDCCH monitoring opportunity or to indicate whether the UE has received a DCI carried by the PDCCH. The base station may configure one or more cells in a group. Taking FIG. 3 as an example, if cell 0 and cell 1 are configured as one group and cell 2 is configured as another group, the DCI includes two T-DAI fields. Each T-DAI field indicates one value of T-DAI for each group.

[0051] T-DAI can also be defined as any of the following:

[0052] Option 4: The T-DAI value indicates the total number of PDCCH monitoring opportunities for one cell, and the HARQ-ACK feedback for these PDCCH monitoring opportunities is multiplexed into the PUSCH scheduled by the DCI carrying the T-DAI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including the PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in a situation where the PDCCH may not schedule a PDSCH) to indicate whether the UE has received a PDSCH in a time slot associated with the PDCCH monitoring opportunity or to indicate whether the UE has received a DCI carried by the PDCCH.

[0053] Taking Figure 1 as an example, if all HARQ-ACK feedbacks for four PDCCH monitoring opportunities in cell 0, two PDCCH monitoring opportunities in cell 1, and three PDCCH monitoring opportunities in cell 2 are to be multiplexed into one PUSCH scheduled by the DCI, the DCI indicates three T-DAI values ​​(i.e., one each for cell 0, cell 1, and cell 2). The T-DAI values ​​for cell 0, cell 1, and cell 2 indicate 4, 2, and 3, respectively.

[0054] Option 5: The value of T-DAI indicates the total number of PDCCH monitoring opportunities for a group(s) of cells, and the HARQ-ACK feedback for these PDCCH monitoring opportunities will be multiplexed on the PUSCH scheduled by the DCI carrying the T-DAI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including a PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in a situation where the PDCCH may not schedule the PDSCH) to indicate whether the UE has received a PDSCH in a time slot associated with the PDCCH monitoring opportunity or to indicate whether the UE has received a DCI carried by the PDCCH. The base station may configure one or more cells in a group. Typically, when cross-carrier scheduling is configured, all cells scheduled by the same scheduling cell are included in one group.

[0055] Taking Figure 3 as an example, if all HARQ-ACK feedbacks for four PDCCH monitoring opportunities in cell 0, two PDCCH monitoring opportunities in cell 1, and three PDCCH monitoring opportunities in cell 2 are to be multiplexed into one PUSCH scheduled by DCI, the DCI indicates two T-DAI values, one for the first group and one for the second group. The first group includes cell 0 and cell 1, and the second group includes cell 2. The T-DAI of the first group is 6, and the T-DAI of the second group is 2.

[0056] III. Embodiment 3: Method 2: T-DAI of Reference Cell

[0057] The T-DAI value indicates the total number of PDCCH monitoring opportunities for a cell, and the HARQ-ACK feedback for these PDCCH monitoring opportunities will be multiplexed on the PUSCH scheduled by the DCI carrying the T-DAI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including the PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in situations where the PDCCH may not schedule a PDSCH) to indicate whether the UE has received a PDSCH on a time slot associated with a PDCCH monitoring opportunity or to indicate whether the UE has received a DCI carried by the PDCCH.

[0058] In an embodiment, the DCI may indicate the T-DAI of the reference cell to the UE, and the UE may determine one or more T-DAI values ​​for one or more other cells based on the T-DAI for the reference cell. If the value of T-DAI for the reference cell is Y, the value of T-DAI for the other cell (denoted as X) may be determined (e.g., by the UE) in one of the following ways: HARQ-ACK feedback for X's PDCCH monitoring opportunities for the other cells may also be multiplexed on the PUSCH. Y is an integer greater than 0.

[0059] The reference cell may be a PCell, a PSCell, a PUCCH-SCell, a scheduling cell, or a cell configured by a base station. For example, the DCI indicates the T-DAI value of the PCell, and the UE determines the T-DAI value of the SCell based on the T-DAI value of the PCell.

[0060] In an embodiment, X is equal to the largest C-DAI value (denoted as X1) received by the UE for the cell, but if X is greater than X1, the UE reports NACK value(s) for the HARQ-ACK information bits corresponding to the last X-X1 C-DAI value in the HARQ-ACK codebook.

[0061] Option 1: X=p*Y, where p is a scaling factor and p is an integer greater than 0.

[0062] The scaling factor may be determined according to the subcarrier interval, the numerology corresponding to the subcarrier interval, the number of PDCCH monitoring opportunities, or the PDCCH monitoring capability. The scaling factor may also be configured by the base station.

[0063] If the numerology corresponding to the subcarrier spacing of the reference cell is u0 and the numerology corresponding to the subcarrier spacing of the other cell is u1, p=2 u1-u0 It becomes.

[0064] Taking Figure 4 as an example, cell 0 is the reference cell and the T-DAI of the reference cell is 2, i.e., Y=2. The scaling factor for cell 1 is 1 and the scaling factor for cell 2 is 2. Thus, the T-DAI of cell 1 and cell 2 are 2 and 4, respectively. Since the UE only receives three DCIs in cell 2, the UE reports NACK value(s) for feedback corresponding to C-DAI=4. In this embodiment, the HARQ-ACK feedback corresponding to all C-DAI values ​​in these cells are multiplexed on the same PUCCH.

[0065] Option 2: [ka] where p is a scaling factor, p may be an integer or a decimal, and p is greater than 0.

[0066] The scaling factor may be determined according to the subcarrier interval, the numerology corresponding to the subcarrier interval, the number of PDCCH monitoring opportunities, or the PDCCH monitoring capability. The scaling factor may also be configured by the base station.

[0067] If the numerology corresponding to the subcarrier spacing of the reference cell is u0 and the numerology corresponding to the subcarrier spacing of the other cell is u1, p=2 u1-u0 It becomes.

[0068] Option 3: X=Y+q, where q is an integer, and q is determined by the subcarrier interval, the numerology corresponding to the subcarrier interval, the number of PDCCH monitoring opportunities configured by the base station, or the PDCCH monitoring capability. In addition, q can also be configured by the base station.

[0069] IV. Embodiment 4: Method 3: T-DAI of the Reference Cell

[0070] If the value of T-DAI of the reference cell is Y, then the value of T-DAI of another cell (denoted as X) can be determined as follows: (X-1) mod T+1=(Y-1) mod T+1, where T is an integer. Usually, the number of bits of C-DAI is denoted as N, and T=2 N Set to.

[0071] X and Y are integers greater than 0. N is an integer greater than 0, typically N=2.

[0072] X is equal to or greater than the total number of PDCCH monitoring opportunities for the cells where the UE received the PDCCH, and the HARQ-ACK feedback for these PDCCH monitoring opportunities will be multiplexed on the PUSCH scheduled by the DCI carrying the T-DAI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including the PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in situations where the PDCCH may not schedule a PDSCH) to indicate whether the UE received a PDSCH on a time slot associated with the PDCCH monitoring opportunity or to indicate whether the UE received a DCI carried by the PDCCH.

[0073] Taking Figure 4 as an example, N is set to 2, that is, T = 4. The base station can indicate Y = 2 for the reference cell (i.e., cell 0). (Y-1) mod T+1=(2-1) mod 4+1=2. Then, it can be derived that (X-1) mod 4+1=2. X should be equal to or greater than the total number of PDCCH monitoring opportunities for cell 2, so X can be 6. In an embodiment, a time slot associated with a PDCCH monitoring opportunity may include a PDSCH reception associated with a DCI. In an embodiment, a time slot associated with a PDCCH monitoring opportunity may be different from a time slot that includes a PDSCH reception associated with a DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in a situation where the PDCCH may not schedule a PDSCH) to indicate whether the UE has received a PDSCH in a time slot associated with a PDCCH monitoring opportunity or to indicate whether the UE has received a DCI carried by the PDCCH. Since the UE only receives PDCCHs corresponding to the three C-DAI values ​​of cell 2, the UE reports NACK value(s) for the HARQ-ACK information bit(s) corresponding to the last three C-DAI values ​​in the HARQ-ACK codebook.

[0074] X is equal to or greater than the total number of PDCCH monitoring opportunities for the group(s) of cells, and the HARQ-ACK feedback for these PDCCH monitoring opportunities will be multiplexed on the PUSCH scheduled by the DCI carrying the T-DAI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may include a PDSCH reception associated with the DCI. In an embodiment, the time slot associated with the PDCCH monitoring opportunity may be different from the time slot including the PDSCH reception associated with the DCI. The HARQ-ACK information bit is transmitted by the UE (e.g., in situations where the PDCCH may not schedule a PDSCH) to indicate whether the UE has received a PDSCH on a time slot associated with the PDCCH monitoring opportunity or to indicate whether the UE has received a DCI carried by the PDCCH.

[0075] Taking FIG. 5 as an example, cell 0 is self-carrier scheduled, and cell 1 cross-carrier scheduled cell 2. Cell 1 and cell 2 are configured as a group for C-DAI aggregation. Set N=2, i.e., T=4. The base station can indicate Y=2 to the reference cell (i.e., cell 0). (Y-1) mod T+1=(2-1) mod 4+1=2. Then, it can be derived that (X-1) mod 4+1=2. X should be equal to or greater than the total number of PDCCH monitoring opportunities where PDSCH reception or HARQ-ACK information bits associated with DCIs of cell 1 and cell 2 exist in cell 2, so X is 6. Since the UE only receives PDCCHs corresponding to the four C-DAI values ​​of cell 1 and cell 2, the UE reports NACK value(s) for the HARQ-ACK information bit(s) corresponding to the last two C-DAI values ​​in the HARQ-ACK codebook.

[0076] V. Embodiment 5: Fallback Behavior

[0077] To further reduce the feedback overhead, certain fallback behaviors can be defined.

[0078] If the value of the T-DAI of the reference cell is greater than 0 and the UE does not receive a PDCCH in another cell, the UE will not generate feedback to this other cell, in which case the UE does not need to generate dummy feedback to the other cell, thus reducing the feedback overhead.

[0079] If the value of the T-DAI of the reference cell is greater than M and the UE does not receive the PDCCH in another cell, the UE generates 1-bit NACK information to this other cell. M is an integer greater than 0. Usually, M is the same value as T, i.e., M=T=2. N If N is set to 2, then M will be 4.

[0080] If the UE does not receive a PDCCH in the reference cell, the UE generates feedback to other cells based on the C-DAI values ​​of the other cells, and does not generate feedback to the reference cell.

[0081] If the value of the T-DAI of the reference cell is 0, the UE generates feedback to other cells based on the C-DAI values ​​of the other cells and does not generate feedback to the reference cell.

[0082] VI. Embodiment 6: PRI Indication

[0083] A PUCCH resource indicator (PRI) is used to indicate a PUCCH resource for carrying HARQ-ACK feedback for a PDCCH received in a corresponding PDCCH monitoring occasion. Different DCIs can carry different PRI values.

[0084] The PUCCH resource determination is based on the PRI field in the reference DCI that the UE detects among the DCIs indicating the same slot for PUCCH transmission and transmits the corresponding HARQ-ACK information on the PUCCH.

[0085] The reference DCI is determined by one of the following options:

[0086] Option 1: The reference DCI is the last DCI among the DCIs indicating the same slot for PUCCH transmission in the reference cell.

[0087] Taking Figure 4 as an example, the DCI of cell 0 corresponding to C-DAI=2 is the reference DCI. The PRI carried by this reference DCI is used to determine the PUCCH resource.

[0088] Option 2: The reference DCI is the last DCI among those in the cell with the smallest serving cell index that indicates the same slot for PUCCH transmission.

[0089] Option 3: The reference DCI is the last DCI among those in the cell with the highest serving cell index that indicates the same slot for PUCCH transmission.

[0090] Option 4: For the last DCI among the DCIs indicating the same slot for PUCCH transmission in each cell, the reference DCI is the last DCI in each cell with the smallest PRI value.

[0091] Option 5: For the last DCI among the DCIs indicating the same slot for PUCCH transmission in each cell, the reference DCI is the last DCI in each cell with the largest PRI value.

[0092] Option 6: The reference DCI is the last DCI among the DCIs that indicate the same slot for PUCCH transmission among all cells.

[0093] The DCI may include a DCI to schedule a PDSCH, a DCI to indicate an SPS release, a DCI to indicate an SCell dormant state, etc. The DCI may exclude an SPS activation DCI. The slot of the PUCCH transmission may be indicated by the PDSCH-to-HARQ_feedback timing indicator field or a value configured by RRC signaling (e.g., dl-DataToUL-ACK, or dl-DataToUL-ACK-r16, or dl-DataToUL-ACK-DCI-1-2, or dl-DataToUL-ACK-r17, or dl-DataToUL-ACK-MulticastDciFormat4_1).

[0094] VII. Embodiment 7: Final DCI Indication

[0095] One field in the DCI is used to indicate whether the DCI is the last DCI of one cell that indicates the same slot of PUCCH transmission among the DCIs detected by the UE and for which the UE transmits corresponding HARQ-ACK information on the PUCCH. For example, if the DCI contains one bit, then "1" indicates that it is the last DCI and "0" indicates that it is not the last DCI.

[0096] The following options are possible:

[0097] Option 1: If the UE does not receive a DCI indicated as the last DCI for one cell, the UE does not generate feedback for this cell.

[0098] Option 2: If the UE does not receive a DCI indicated as the last DCI for a cell, the UE generates feedback for this cell and adds a 1-bit NACK to the end of the feedback for this cell.

[0099] VIII. Embodiment 8: Indication in PUCCH

[0100] For PUCCH carrying HARQ-ACK feedback, one bit is included in the PUCCH to indicate whether there is HARQ-ACK feedback for a cell or group(s) of cells.

[0101] Taking FIG. 5 as an example, one bit is for cell 0 and another bit is for cell 1 and cell 2, since cell 2 and cell 2 are configured as a group of cells.

[0102] The implementation described above is applied to wireless communication. Figure 6 shows an example of a wireless communication system (e.g., a 5G or NR cellular network) including a base station 620 and one or more user equipments (UEs) 611, 612, 613. In one embodiment, the UE accesses a BS (e.g., a network) using a communication link to the network (sometimes referred to as an uplink direction, as shown by dashed arrows 631, 632, 633), after which subsequent communication is possible from the BS to the UE (sometimes referred to as a downlink direction, as shown by arrows 641, 642, 643 in the network to UE direction). In one embodiment, the BS transmits information to the UE (sometimes referred to as a downlink direction, as shown by arrows 641, 642, 643). This allows subsequent communication to be possible from the UE to the BS (sometimes referred to as an uplink direction, as shown by dashed arrows 631, 632, 633 from the UE to the BS). Examples of UEs include smartphones, tablets, mobile computers, machine-to-machine (M2M) devices, Internet of Things (IoT) devices, and the like.

[0103] FIG. 7 illustrates an example block diagram of a hardware platform 700, which may be part of a network device (e.g., a base station) or a communication device (e.g., a user equipment, UE). The hardware platform 700 includes at least one processor 710 and a memory 705 having instructions stored therein. The instructions executed by the processor 710 configure the hardware platform 700 to perform the operations described in FIGS. 1-6, 8-9, and in various embodiments described in this patent document. The transmitter 715 transmits information or data to another device. For example, a transmitter of a network device can transmit a message to a user equipment. The receiver 720 receives information or data transmitted or sent by another device. For example, a user equipment can receive a message from a network device.

[0104] 8 shows an example flow chart for transmitting HARQ-ACK information bits. Operation 802 includes receiving, by the communication device, control information from a cell including a field including a value, the value indicating a current number of control channel monitoring opportunities associated with the cell and to be monitored by the communication device, the current number of control channel monitoring opportunities being part of a set of numbers associated with a set of control channel monitoring opportunities in which a control channel has been or will be received from the cell. Operation 804 includes transmitting one or more hybrid automatic repeat request acknowledgement (HARQ-ACK) information bits indicating whether a shared channel associated with the control channel monitoring opportunity has been received by the communication device or indicating that the communication device has received the control information.

[0105] In an embodiment, the value of the field indicates a current number of control channel monitoring opportunities associated with a cell, the cell being a scheduling cell for a scheduled cell in a group of scheduled cells. In an embodiment, the value of the field indicates a current number of control channel monitoring opportunities associated with a cell and one or more other cells, the cell being a scheduling cell for a group of scheduled cells including the cell and one or more other cells. In an embodiment, the field is based on or indicates a control channel monitoring opportunity index of a control channel monitoring opportunity, or a shared channel reception start time of a shared channel and a control channel monitoring opportunity index of a control channel monitoring opportunity, or a shared channel reception start time, a serving cell index, and a control channel monitoring opportunity index of a control channel monitoring opportunity. In an embodiment, the method further includes receiving second control information including a second field having a second value indicating a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell, and transmitting one or more HARQ-ACK information bits includes obtaining multiplexed HARQ-ACK information bits by multiplexing a plurality of HARQ-ACK information bits indicating whether a set of shared channels has been received by the communication device and / or that the communication device has received the control information, the plurality of HARQ-ACK information bits including one or more HARQ-ACK information bits, and transmitting the multiplexed HARQ-ACK information bits on an uplink shared channel scheduled by the control channel including the second field.

[0106] In an embodiment, the second value of the second field indicates a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell that is the reference cell, and the communications device determines one or more second values ​​associated with the one or more other cells based on the second value of the second field, each of the one or more second values ​​indicating a total number of control channel monitoring opportunities in one of the sets of control channel monitoring opportunities associated with one of the one or more other cells. In an embodiment, the second field of the second value is a Total Downlink Allocation Indicator (T-DAI) field of the cell, and the communications device determines a third value of a second T-DAI field based on the second value of the T-DAI field, the third value of the second T-DAI field indicating a second total number of control channel monitoring opportunities in a second set of control channel monitoring opportunities associated with the second cell and to be monitored by the communications device, the second value being referred to as Y and the third value being referred to as X. In one embodiment, X is equal to the maximum value (X1) of a series of numbers associated with a set of control channel monitoring opportunities during which a control channel has been or will be received from the cell.

[0107] In an embodiment, X1 is a maximum value in a set of numbers associated with a set of control channel monitoring opportunities in which a control channel has been or will be received from the cell, and in response to X being greater than X1, the communications device transmits a negative acknowledgement (NACK) value of the HARQ-ACK information bits corresponding to a last X-X1 Counter Downlink Assignment Indicator (C-DAI) value in a HARQ-ACK codebook for at least a portion of a second set of control channel monitoring opportunities. In an embodiment, X=p*Y, where p is a scaling factor and p is an integer greater than 0. In an embodiment, [ka] where p is a scaling factor, p is an integer or a decimal, and p is greater than 0. In an embodiment, p is determined by the subcarrier spacing, the numerology corresponding to the subcarrier spacing, the total number of control channel monitoring opportunities, or the PDCCH monitoring capability, or p is configured by the base station.

[0108] In one embodiment, X=Y+q, where q is an integer, and q is determined by the subcarrier spacing, the numerology corresponding to the subcarrier spacing, the total number of control channel monitoring opportunities, or the PDCCH monitoring capability, or q is configured by the base station. In one embodiment, (X-1) mod T+1=(Y-1) mod T+1, where T and N are integers. In one embodiment, T is 2 N and N is the number of bits in the field. In an embodiment, X, Y, and N are integers greater than 0. In an embodiment, X is greater than or equal to the total number of control channel monitoring opportunities in the set of control channel monitoring opportunities in which the control channel was received. In an embodiment, the cell is a reference cell, and the communication device determines not to generate or transmit feedback to the second cell in response to the second value of the T-DAI field being greater than zero and the communication device determining that there is no reception of one or more control channels from the second cell. In an embodiment, the cell is a reference cell, and the communication device generates and transmits one bit of negative acknowledgement (NACK) information to the second cell in response to the second value of the T-DAI field being greater than M, where M is an integer greater than zero, and the communication device determining that there is no reception of one or more control channels from the second cell.

[0109] In an embodiment, the cell is a reference cell, and in response to determining that there is no reception of one or more control channels from the cell, the communication device determines not to generate or transmit feedback to the cell, and the communication device generates and transmits feedback to the second cell based on a value indicative of a second current number of second control channel monitoring opportunities associated with the second cell. In an embodiment, the cell is a reference cell, and the method further includes receiving second control information including a second field including a second value indicative of a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell, and in response to the second value being equal to zero, the communication device determines not to generate or transmit feedback to the cell, and the communication device generates and transmits feedback to the second cell based on a value indicative of a second current number of second control channel monitoring opportunities associated with the second cell. In an embodiment, the field includes a counter downlink allocation indicator (C-DAI) field. In an embodiment, the control information includes downlink control information (DCI).

[0110] 9 shows an example flow chart for receiving HARQ-ACK information bits. Operation 902 includes transmitting, by a network device, control information including a field including a value, the value indicating a current number of control channel monitoring opportunities associated with a cell of the network device and to be monitored by the communication device, the current number of control channel monitoring opportunities being part of a set of numbers associated with a set of control channel monitoring opportunities in which a control channel has been or will be transmitted from the cell to the communication device. Operation 904 includes receiving one or more hybrid automatic repeat request acknowledgement (HARQ-ACK) information bits indicating whether a shared channel associated with the control channel monitoring opportunity has been received by the communication device or that the communication device has received the control information.

[0111] In an embodiment, the value of the field indicates a current number of control channel monitoring opportunities associated with a cell, the cell being a scheduling cell for a scheduled cell in a group of scheduled cells. In an embodiment, the value of the field indicates a current number of control channel monitoring opportunities associated with a cell and one or more other cells, the cell being a scheduling cell for a group of scheduled cells including the cell and one or more other cells. In an embodiment, the field is based on or indicates a control channel monitoring opportunity index of a control channel monitoring opportunity, or a shared channel reception start time of a shared channel and a control channel monitoring opportunity index of a control channel monitoring opportunity, or a shared channel reception start time, a serving cell index, and a control channel monitoring opportunity index of a control channel monitoring opportunity. In an embodiment, the method further includes transmitting second control information including a second field including a second value indicating a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell, and receiving one or more HARQ-ACK information bits includes receiving multiplexed HARQ-ACK information bits in an uplink shared channel scheduled by the control channel including the second field, the multiplexed HARQ-ACK information bits including a plurality of HARQ-ACK information bits indicating whether the set of shared channels has been received by the communication device and / or that the communication device has received control information, as well as one or more HARQ-ACK information bits.

[0112] In an embodiment, the second value of the second field indicates a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with the cell that is the reference cell. In an embodiment, the second field of the second value is a Total Downlink Allocation Indicator (T-DAI) field of the cell. In an embodiment, the field includes a Counter Downlink Allocation Indicator (C-DAI) field. In an embodiment, the control information includes Downlink Control Information (DCI).

[0113] In this document, the word "exemplary" is used to mean "example," and unless expressly stated, is not intended to imply an ideal or preferred embodiment.

[0114] Some of the embodiments described herein are described in the general context of a method or process, which may be implemented in one embodiment by a computer program product embodied in a computer-readable medium including computer-executable instructions, such as program code, executed by a computer in a network environment. The computer-readable medium may include, but is not limited to, removable and non-removable storage devices, including read-only memory (ROM), random access memory (RAM), compact discs (CDs), digital versatile discs (DVDs), and the like. Thus, the computer-readable medium may include non-transitory storage media. Generally, program modules may include routines, programs, objects, components, data structures, and the like that perform particular tasks or implement particular abstract data types. Computer or processor-executable instructions, associated data structures, and program modules are examples of program code for performing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures is an example of corresponding acts for implementing the functions described in such steps or processes.

[0115] Some of the disclosed embodiments can be implemented as devices or modules using hardware circuits, software, or a combination thereof. For example, hardware circuit implementations can include separate analog and / or digital components integrated, for example, as part of a printed circuit board. Alternatively or additionally, the disclosed components or modules can be implemented as application specific integrated circuits (ASICs) and / or field programmable gate array (FPGA) devices. In some embodiments, they can also or instead include digital signal processors (DSPs), which are dedicated microprocessors with architectures optimized for the operational needs of digital signal processing related to the disclosed functions of this application. Similarly, the various components or subcomponents within each module can be implemented in software, hardware, or firmware. Connections between modules and / or between components within a module can be achieved using any one of the connection methods and media known to those skilled in the art, including, but not limited to, communication over the Internet, wired, or wireless networks using appropriate protocols.

[0116] While this document contains many details, these should not be construed as limitations on the scope of the claimed invention or what may be claimed, but rather as descriptions of features specific to particular embodiments. Certain features described in this document in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable subcombination. Furthermore, even if features are described above as functioning in a particular combination and originally claimed as such, one or more features from a claimed combination may in some cases be deleted from the combination, and the claimed combination may be directed to a subcombination or variations of the subcombination. Similarly, although the figures show operations in a particular order, it should not be understood that such operations need to be performed in the particular order shown, or in the sequential order, or that all of the operations shown need to be performed, to achieve desired results.

[0117] Only some embodiments and examples have been described; other embodiments, enhancements, and variations can be obtained based on what is described and illustrated in this disclosure.

Claims

1. 1. A wireless communication method, comprising: receiving, by a communication device, control information from a cell, the control information including a field including a value; the value indicates a current number of control channel monitoring opportunities associated with the cell and to be monitored by the communications device; the current number of control channel monitoring opportunities being part of a series of numbers associated with the set of control channel monitoring opportunities for which a control channel has been or will be received from the cell; and transmitting one or more Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) information bits indicating whether a shared channel associated with the control channel monitoring opportunity has been received by the communication device or indicating that the communication device has received the control information; A method comprising:

2. the value in the field indicates the current number of control channel monitoring opportunities associated with the cell; the cell is a scheduling cell for one scheduled cell in a group of scheduled cells; The method of claim 1.

3. the value in the field indicates the current number of control channel monitoring opportunities associated with the cell and one or more other cells; the cell is a scheduling cell for a group of scheduled cells that includes the cell and the one or more other cells. The method of claim 1.

4. The field is: A control channel monitoring opportunity index of the control channel monitoring opportunity, or A shared channel reception start time of the shared channel and a control channel monitoring opportunity index of the control channel monitoring opportunity, or the shared channel reception start time, the serving cell index, and the control channel monitoring opportunity index of the control channel monitoring opportunity; The method of claim 1 , which is based on or indicates:

5. receiving second control information including a second field including a second value indicating a total number of control channel monitoring opportunities in the set of control channel monitoring opportunities associated with the cell; Further comprising: Transmitting the one or more HARQ-ACK information bits comprises: obtaining a multiplexed HARQ-ACK information bit by multiplexing a plurality of HARQ-ACK information bits, the multiplexed HARQ-ACK information bits indicating whether a set of shared channels has been received by the communication device and / or whether the communication device has received the control information, the plurality of HARQ-ACK information bits including the one or more HARQ-ACK information bits; transmitting the multiplexed HARQ-ACK information bits scheduled by the control channel including the second field in an uplink shared channel; The method of claim 1 , comprising:

6. the second value of the second field indicates a total number of the control channel monitoring opportunities in the set of control channel monitoring opportunities associated with the cell that is a reference cell; The communications device determines one or more second values ​​associated with one or more other cells based on the second value of the second field; each of the one or more second values ​​indicating a total number of control channel monitoring opportunities in a set of control channel monitoring opportunities associated with one of the one or more other cells. The method according to claim 5.

7. the second field for the second value is a Total Downlink Allocation Indicator (T-DAI) field for the cell; the communications device determines a third value for a second T-DAI field based on the second value of the T-DAI field; the third value of the second T-DAI field is associated with a second cell and indicates a second total number of control channel monitoring opportunities in a second set of control channel monitoring opportunities to be monitored by the communications device; The second value is referred to as Y and the third value is referred to as X. The method according to claim 5.

8. 8. The method of claim 7, wherein X is equal to a maximum value (X1) of the series of numbers associated with the set of control channel monitoring opportunities during which a control channel has been or will be received from the cell.

9. X1 is the maximum value in the series of numbers associated with the set of control channel monitoring opportunities during which a control channel has been or will be received from the cell; In response to X being greater than X1, the communications device transmits, for at least a portion of the second set of control channel monitoring opportunities, a negative acknowledgement (NACK) value for a HARQ-ACK information bit that corresponds to a last X-X1 Counter Downlink Assignment Indicator (C-DAI) value in a HARQ-ACK codebook. The method of claim 7.

10. X=p*Y, p is a scaling factor, p is an integer greater than 0; The method of claim 7. 【Request 11】 【Number 1】 and p is a scaling factor, p is an integer or a decimal number, p is greater than 0; The method of claim 7.

12. p is determined by a subcarrier interval, a numerology corresponding to the subcarrier interval, a total number of control channel monitoring opportunities, or a PDCCH monitoring capability; or p is configured by the base station, 12. The method according to claim 10 or 11.

13. X=Y+q, q is an integer, q is determined by a subcarrier interval, a numerology corresponding to the subcarrier interval, a total number of control channel monitoring opportunities, or a PDCCH monitoring capability; or q is configured by a base station; The method of claim 7.

14. (X-1) mod T+1=(Y-1) mod T+1, T and N are integers. The method of claim 7.

15. T is 2 Ｎ is an integer equal to N is the number of bits in the field. The method of claim 14.

16. 15. The method of claim 14, wherein X, Y, and N are integers greater than 0.

17. 15. The method of claim 14, wherein X is greater than or equal to a total number of the control channel monitoring opportunities in the set of control channel monitoring opportunities at which a control channel is received.

18. the cell is a reference cell, The communication device includes: the second value of the T-DAI field is greater than zero; and determining, by the communications device, that there is no reception of one or more control channels from the second cell; determining not to generate feedback to the second cell or determining not to transmit feedback to the second cell in response to The method of claim 7.

19. the cell is a reference cell, The communication device includes: the second value of the T-DAI field is greater than M, where M is an integer greater than 0; determining, by the communications device, that there is no reception of one or more control channels from the second cell; generating one-bit negative acknowledgement (NACK) information for the second cell in response to the second cell; The method of claim 7.

20. the cell is a reference cell, in response to determining that one or more control channels are not being received from the cell; The communication device determines not to generate feedback to the cell or determines not to transmit feedback to the cell; generating and transmitting feedback to the second cell based on the value indicating a second current number of second control channel monitoring opportunities associated with the second cell, The method of claim 7.

21. the cell is a reference cell, The method comprises: receiving second control information including a second field including a second value indicating a total number of control channel monitoring opportunities in the set of control channel monitoring opportunities associated with the cell; Further comprising: in response to the second value being equal to zero, The communication device determines not to generate or transmit feedback to the cell; generating and transmitting feedback to the second cell based on the value indicating a second current number of second control channel monitoring opportunities associated with the second cell, The method of claim 7.

22. The method of any one of claims 1 to 21, wherein the field includes a Counter Downlink Allocation Indicator (C-DAI) field.

23. The method of claim 1 , wherein the control information comprises downlink control information (DCI).

24. 1. A wireless communication method, comprising: transmitting, by the network device, control information including a field containing a value; the value indicates a current number of control channel monitoring opportunities associated with a cell of the network device and to be monitored by a communication device; the current number of control channel monitoring opportunities being part of a series of numbers associated with a set of control channel monitoring opportunities in which a control channel has been or will be transmitted from the cell to the communication device; receiving one or more Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) information bits indicating whether a shared channel associated with the control channel monitoring opportunity has been received by the communication device or indicating that the communication device has received the control information; A method comprising:

25. the value in the field indicates the current number of control channel monitoring opportunities associated with the cell; the cell is a scheduling cell for one scheduled cell in a group of scheduled cells; 25. The method of claim 24.

26. the value in the field indicates the current number of control channel monitoring opportunities associated with the cell and one or more other cells; the cell is a scheduling cell for a group of scheduled cells that includes the cell and the one or more other cells.

25. The method of claim 24.

27. The field is: A control channel monitoring opportunity index of the control channel monitoring opportunity, or a shared channel reception start time of the shared channel and a control channel monitoring opportunity index of the control channel monitoring opportunity; or the shared channel reception start time, the serving cell index, and the control channel monitoring opportunity index of the control channel monitoring opportunity; 25. The method of claim 24, which is based on or indicative of:

28. transmitting second control information including a second field including a second value indicating a total number of control channel monitoring opportunities in the set of control channel monitoring opportunities associated with the cell; Receiving the one or more HARQ-ACK information bits includes: receiving multiplexed HARQ-ACK information bits in an uplink shared channel scheduled by the control channel including the second field, the multiplexed HARQ-ACK information bits including a plurality of HARQ-ACK information bits indicating whether the set of shared channels has been received by the communication device and / or that the communication device has received the control information, and the one or more HARQ-ACK information bits; 25. The method of claim 24, comprising:

29. 30. The method of claim 28, wherein the second value of the second field indicates a total number of the control channel monitoring opportunities in the set of control channel monitoring opportunities associated with a cell that is the reference cell.

30. 29. The method of claim 28, wherein the second field for the second value is a Total Downlink Allocation Indicator (T-DAI) field for the cell.

31. The method of any one of claims 24 to 30, wherein the field includes a Counter Downlink Allocation Indicator (C-DAI) field.

32. 31. The method of any one of claims 24 to 30, wherein the control information comprises downlink control information (DCI).

33. An apparatus for wireless communication comprising a processor configured to perform a method according to one or more of claims 1 to 32.

34. 33. A non-transitory computer readable program storage medium having code stored thereon that, when executed by a processor, causes the processor to perform a method according to one or more of claims 1 to 32.

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