CN113783675B

CN113783675B - Control information transmission method and equipment

Info

Publication number: CN113783675B
Application number: CN202110904151.XA
Authority: CN
Inventors: 王志勤; 闫志宇; 沈霞; 杜滢; 焦慧颖; 刘晓峰
Original assignee: China Academy of Information and Communications Technology CAICT
Current assignee: China Academy of Information and Communications Technology CAICT
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2022-11-11
Anticipated expiration: 2041-08-06
Also published as: WO2023010807A1; CN113783675A

Abstract

Disclosed is a control information transmission method including feedback information in a target PUCCH located at a second target time unit of a second BWP, the second target time unit overlapping a first target time unit located at a first BWP; the feedback information comprises feedback of a first data set, time differences between each first reference time unit and a first target time unit of the first data set are respectively equal to the product of each parameter of a first parameter subset in the first parameter set and a first time length, and the first data set and a second data set are not overlapped; and the time difference between each second reference time unit and the second target time unit of the second data set is respectively equal to the product of each parameter in the second parameter set and the second duration. The application also includes devices and systems implementing the method. The method and the device solve the problem that partial PDSCH of the HARQ-ACK information to be fed back loses feedback due to switching of the cell or BWP for sending the PUCCH.

Description

Control information transmission method and equipment

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a method and an apparatus for transmitting control information.

Background

HARQ (Hybrid Automatic Repeat ReQuest) is a technology combining FEC (Feed-forward Error Correction) and ARQ (Automatic Repeat-ReQuest). By adopting the technology, the user terminal (UE) receives feedback Acknowledgement (ACK) or non-acknowledgement (NACK) information for the downlink service data PDSCH, so that the network equipment can determine whether to reschedule the downlink service data or to schedule new downlink service data for the user terminal. The ACK and NACK information is collectively referred to as hybrid automatic repeat request-acknowledgement (HARQ-ACK) information.

In a new air interface system, the configuration indexes u corresponding to the subcarriers of different cells can be different, the time slots included in 1 subframe are different corresponding to different configuration indexes mu; and the time duration of the time slots included in the corresponding different mu 1 subframes is also different. Mu of the PCell and the SCell in one cell group can be different, so when downlink service data uses the SCell and uplink feedback information uses the PCell, the time lengths of time slots occupied by the downlink service data and the uplink feedback information are different.

The HARQ-ACK codebook is an information sequence of HARQ-ACK fed back on one PUCCH or PUSCH. Each bit corresponds to a Transport Block (TB), and each bit indicates whether the corresponding TB is correctly received. The NR system employs a semi-static HARQ-ACK codebook or a dynamic HARQ-ACK codebook.

When a semi-static HARQ-ACK codebook is adopted, the UE determines a time domain position set M of a PDSCH (physical downlink shared channel) corresponding to HARQ-ACK feedback in the same time slot on each cell c according to the HARQ-ACK feedback timing value K1, the semi-static time slot structure and PDSCH candidate time domain resource allocation information _A,C . Then according to M _A,C And mapping the HARQ-ACK released by the PDSCH and the SPS PDSCH received in the PDSCH position set to the corresponding position in the HARQ-ACK feedback sequence, thereby obtaining the HARQ-ACK codebook to be transmitted in the time slot n. Specifically, the UE determines, based on the HARQ-ACK feedback timing value configured by K1, the number of PDSCH time slots that need to perform HARQ-ACK feedback in the same time slot of the cell, and then determines the maximum number of PDSCHs that can be transmitted in each time slot that needs to be fed back. When carrier aggregation exists, the PDSCH aiming at each carrier in the HARQ-ACK codebook is determined according to the process, and finally, the HARQ-ACK information of each carrier is cascaded into the HARQ-ACK codebook. For PDSCH time domain position set M _A,C Where the PDSCH is not received, the corresponding information in the HARQ-ACK codebook is NACK.

When the dynamic HARQ-ACK codebook is employed, the HARQ-ACK codebook is generated based on the number of actually scheduled PDSCHs. And determining a PDCCH monitoring opportunity set according to the HARQ-ACK feedback timing value configured by the K1 and the scheduling time sequence set of the PDSCH. And referring to 9.1 in 3GPP TS 38.213 V16.5.0, obtaining C-DAI and T-DAI in PDCCH according to the PDCCH monitoring opportunity set to determine PDSCH corresponding to each information of the HARQ-ACK codebook.

By adopting the prior art, under the condition that the terminal equipment supports a plurality of uplink carriers (cells), the terminal equipment only sends PUCCH in an uplink Primary Cell (PCell, primary Cell), so that load imbalance between the PCell and a Secondary Cell (SCell, secondary Cell) is brought, in addition, the HARQ-ACK feedback time delay is limited by resource configuration on the PCell, and when the PCell does not meet the resource transmitted by the PUCCH, the HARQ-ACK feedback time delay causes poor service time delay characteristic. The cell which transmits the PUCCH is allowed to be switched between the PCell and each SCell, so that the problems of unbalanced load between the PCell and the SCell and poor HARQ-ACK feedback delay characteristics can be solved.

However, when the PUCCH is switched between uplink BWPs, the conventional HARQ-ACK codebook determination method cannot meet the HARQ-ACK feedback requirement for downlink data transmission, because after switching, when feeding back the PDSCH according to the slot length and K1 configuration of the new cell or BWP, the corresponding PDSCH set is not consistent with the PDSCH set of the HARQ-ACK information to be fed back before switching due to the difference between the slot length and K1 configuration of the cell or BWP before switching, so that it is likely that part of the PDSCH of the HARQ-ACK information to be fed back in the original cell or BWP loses feedback.

Disclosure of Invention

The application provides a control information transmission method and equipment, which solve the problem that a switching cell or BWP causes part of PDSCH of HARQ-ACK information to be fed back of an original cell or BWP to lose feedback.

In a first aspect, an embodiment of the present application provides a method for transmitting control information, where, under a BWP set condition, the BWP set is composed of BWPs supporting PUCCH transmission, and the BWP set includes a first BWP and a second BWP; the duration of the time unit of the first BWP is a first duration, the feedback timing value is a first parameter set, the duration of the time unit on the second BWP is a second duration, and the feedback timing value is a second parameter set:

the first parameter set is not equal to the second parameter set, and/or the first duration is not equal to the second duration;

including feedback information in a target PUCCH that is located at a second target time unit of a second BWP that overlaps with a first target time unit located at the first BWP;

the feedback information includes feedback of a first data set, and time differences between each first reference time unit of the first data set and the first target time unit are respectively equal to a product of each parameter of a first parameter subset in the first parameter set and the first duration;

the first reference time unit is a time unit of a first BWP, and an end time of each first reference time unit is the same as at least one time unit of the first data set, or a period of each first reference time unit contains at least one time unit of the first data set;

the first data set and the second data set do not overlap;

the time difference between each second reference time unit of the second data set and the second target time unit is respectively equal to the product of each parameter in the second parameter set and the second duration;

the second reference time unit is a time unit of a second BWP, and an end time of each second reference time unit is the same as at least one time unit of the second data set, or a period of each second reference time unit includes at least one time unit of the first data set.

Further, the feedback information also includes feedback of a third set of data. And the time difference between each second reference time unit of the third data set and the second target time unit is equal to the product of each parameter of the second parameter subset in the second parameter set and the duration of the second time unit in turn.

Further, the feedback information comprises feedback of a fourth set of data. The time difference between each first reference time unit of the fourth data set and the first target time unit is respectively equal to the product of each parameter of a third parameter subset in the first parameter set and the first time length; the first set of parameters includes the first subset of parameters and the third subset of parameters.

Preferably, the first parameter subset is a parameter indicated by first downlink control information, the first downlink control information is used for activating semi-persistent scheduling data, and the first downlink control information indicates that feedback of the semi-persistent scheduling data is located in the first target time unit.

Preferably, the first data set is a data set determined according to second downlink control information, the second downlink control information includes a counting downlink allocation indication and/or a total downlink allocation indication, and the second downlink control information indicates that the feedback of the scheduled data is located in the first target time unit.

Preferably, the third data set is a data set indicated by third downlink control information, the third downlink control information includes a counting downlink allocation indication and/or a total downlink allocation indication, and the third downlink control information indicates that the feedback of the scheduled data is located in the second target time unit.

Preferably, the second downlink control information and the third downlink control information count downlink allocation indications and/or total downlink allocation indications in a joint count mode.

In any embodiment of the first aspect of the present application, the feedback information is transmitted on a PUSCH time-overlapped with the target PUCCH on the second BWP.

In any embodiment of the first aspect of the present application, the target PUCCH is indicated to be located in a second target time unit by using dynamic indication information, or the target PUCCH is indicated to be located in the second target time unit by using semi-static indication information.

Further, the method of the first aspect of the present application is applied to a terminal device, and includes the following steps:

the terminal device receives indication information, wherein the indication information is used for indicating that the feedback information is sent in the target PUCCH;

the terminal equipment determines a second data set according to the second parameter set, the second duration and the position of a second target time unit; determining a first data set according to the first parameter set, the first duration, the position of the first target time unit and the position of the second data set;

the terminal device sends the feedback information, including feedback to the first data set, and further including feedback to at least one of a second data set, a third data set, and a fourth data set.

Further, the method of the first aspect of the present application is applied to a network device, and includes the following steps:

the network equipment sends indication information, wherein the indication information is used for indicating that the feedback information is sent in the target PUCCH;

the network equipment determines a second data set according to the second parameter set, the second duration and the position of a second target time unit; determining a first data set according to the first parameter set, the first duration, the position of the first target time unit and the position of the second data set;

the network device receives the feedback information, identifies feedback for the first data set, and further includes identifying feedback for at least one of the second data set, the third data set, and the fourth data set.

In a second aspect, an embodiment of the present application further provides a terminal device, configured to implement the method in any one of the embodiments of the first aspect of the present application. The terminal device is configured to receive indication information, where the indication information is used to indicate that the feedback information is sent on the target PUCCH; determining a second data set according to the second parameter set, the second duration and the position of a second target time unit; determining a first data set according to the first parameter set, the first duration, the position of the first target time unit and the position of the second data set; and sending the feedback information, wherein the feedback information comprises feedback on the first data set, and further comprises feedback on at least one of the second data set, the third data set and the fourth data set.

In a third aspect, an embodiment of the present application further provides a network device, configured to implement the method in any one of the embodiments of the first aspect of the present application. The network device is configured to send indication information, where the indication information is used to indicate that the feedback information is sent in the target PUCCH; determining a second data set according to the second parameter set, the second duration and the position of a second target time unit; determining a first data set according to the first parameter set, the first duration, the position of the first target time unit and the position of the second data set; receiving the feedback information, identifying feedback to the first data set, and further including identifying feedback to at least one of the second data set, the third data set, and the fourth data set.

In a fourth aspect, the present application further provides a communication device, including: memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method according to any one of the embodiments of the present application.

In a fifth aspect, the present application also proposes a computer-readable medium on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application.

In a sixth aspect, the present application further provides a mobile communication system, which includes at least 1 network device according to any embodiment of the present application and/or at least 1 terminal device according to any embodiment of the present application.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

the method and the device solve the problem of how to determine the HARQ-ACK codebook in the target PUCCH when the PUCCH is switched between uplink BWPs, so as to meet the HARQ-ACK feedback requirement of data transmission of each downlink BWP, and achieve the effects of load balancing between the PCell and the SCell and improving the HARQ-ACK feedback delay performance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic diagram of a timeslot structure of a new air interface system;

fig. 2 (a) is a schematic diagram of a feedback opportunity with a long downlink time slot and a short uplink time slot;

fig. 2 (b) is a schematic diagram of feedback timing of a short downlink time slot and a long uplink time slot;

FIG. 3 is a flow chart of an embodiment of a method for transmitting control information according to the present application;

fig. 4 is a schematic diagram of an embodiment in which feedback information includes feedback of a first BWP semi-persistent scheduling PDSCH during BWP handover of a PUCCH;

fig. 5 is a schematic diagram of an embodiment in which feedback information includes feedback of a first BWP dynamically scheduled PDSCH when a PUCCH is in BWP handover;

FIG. 6 is a flowchart of an embodiment of a method of the present invention applied to a terminal device;

FIG. 7 is a flow chart of an embodiment of the method of the present invention for a network device;

FIG. 8 is a schematic diagram of an embodiment of a network device;

FIG. 9 is a schematic diagram of an embodiment of a terminal device;

fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention;

fig. 11 is a block diagram of a terminal device of another embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

By designing the determination mode of the HARQ-ACK codebook in the target PUCCH, the HARQ-ACK feedback requirement of downlink data transmission when the PUCCH is switched between uplink BWPs is met, and the effects of load balancing of the PUCCH and improvement of HARQ-ACK feedback delay performance are achieved.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a timeslot structure of a new air interface system.

In the figure, a cell with μ =0 includes 10 slots in one subframe, and each slot is 1ms in length; the μ =1 cell includes 20 slots in one subframe, each slot being 0.5ms in length. This is because, in the timeslot structure of the new air interface system, the sets of OFDM parameter configurations, such as the subcarrier spacing size and the cyclic prefix size, used by different cells may be different. As described in 4.2 of 3gpp TS 38.211 v16.5.0, the OFDM parameter configuration set is preset with a specific index μ, where μ =0 corresponds to a subcarrier spacing of 15KHz, μ =1 corresponds to a subcarrier spacing of 30KHz, and so on. In the new air interface system, the length of one radio frame is 10ms, and the radio frame includes 10 subframes, so that the number of time slots included in corresponding to different μ and 1 subframe is different, and the time lengths of the time slots included in corresponding to different μ and 1 subframe are also different.

In the present application, the time slots used by each carrier for transmitting PDSCH are collectively referred to as "time units", and the time duration of the time units used by different cells may be different or the same.

The timing difference between the PDSCH and the HARQ-ACK information corresponding thereto is not fixed but flexibly indicated, and is referred to herein as a "parameter" of the feedback timing value.

For example, under the dynamic scheduling condition, the time difference between the HARQ-ACK feedback and the PDSCH is determined by the "PDSCH-to-HARQ-timing-indicator" field in the PDCCH corresponding to the PDSCH, or by the higher layer signaling "dl-DataToUL-ACK" (denoted as K1). If K1 configures a plurality of values, a "PDSCH-to-HARQ-timing-indicator" field indicates one of the plurality of values configured by K1; if K1 is configured with only one value, the PDCCH does not need to include a "PDSCH-to-HARQ-timing-indicator" field, and the time difference between HARQ-ACK feedback and PDSCH is the configured value of K1.

As another example, semi-Persistent Scheduling (SPS) allows the resource of the PDSCH to be periodically allocated to a specific terminal device UE through one-time PDCCH Scheduling. And the UE receives the SPS configuration resource and activates the SPS configuration by acquiring the PDCCH sent by the network equipment. And if the UE receives that the network equipment releases the SPS configuration parameters through the PDCCH, stopping configuring corresponding resources in the SPS to receive data. The time difference between the SPS PDSCH and its corresponding HARQ-ACK feedback is also determined by the "PDSCH-to-HARQ-timing-indicator" field in the PDCCH activating SPS, or by higher layer signaling K1.

Therefore, whether in the dynamic scheduling condition or the semi-static scheduling condition, there may be 1 or more parameters of the feedback timing value, which may be referred to as "parameter set", for example, the first parameter set and the second parameter set in the present application. Furthermore, to address the need for the problem, a "subset of parameters" as defined in the present application is a subset of a particular "set of parameters", e.g., a first subset of parameters, a third subset of parameters is a subset of the first set of parameters, and a second subset of parameters is a subset of the second set of parameters.

In the prior art, the PUCCH of the terminal equipment is always transmitted in the PCell in the cell group. The time granularity of the HARQ-ACK timing relation indicated to the terminal equipment by the network equipment is subject to the time unit length of the Pcell. In the FDD system, the μ values of uplink and downlink carriers may also be different, and in the following, taking a time unit as a time slot length as an example, when feeding back downlink traffic, the determination method of the HARQ-ACK feedback time unit in the uplink carrier is as follows:

in fig. 2 (a) - (b), it is assumed that the OFDM parameter set on the uplink PCell is configured as μ _UL The length of a Slot is Slot _{μ_UL} (ii) a The OFDM parameter set of the SCell where the PDSCH is located is configured to be mu _DL The length of a Slot is Slot _{μ_DL} . PDSCH is positioned in downlink time slot n _D HARQ-ACK feedback in uplink time slot n _U . Defining reference time slot n 'located on uplink PCell' _U Each reference time slot n' _U And one (or a set of a minimum number of consecutive) downlink time slots n _D Are aligned with the end time of. The time difference between the time units of the PDSCH and the corresponding HARQ-ACK meets a timing parameter K, and refers to an uplink reference time slot n 'corresponding to the PDSCH' _U And time slot n of HARQ-ACK _U The time difference between the two slots is K slots _{μ_UL} 。

Fig. 2 (a) is a schematic diagram of a feedback timing with a long downlink time slot and a short uplink time slot.

If Slot _{μ_UL} <Slot _{μ_DL} The continuous X K1 values only have one corresponding downlink transmission time slot. Wherein,

here, the uplink reference corresponding to the PDSCHTime slot n' _U Is and a downlink time slot n _D The last uplink slot overlapping in time, that is, the end time of the uplink reference slot and at least one downlink slot of the PDSCH are the same.

Fig. 2 (b) is a schematic diagram of feedback timing of a short downlink time slot and a long uplink time slot.

If Slot is _{μ_UL} >Slot _{μ_DL} Each K1 value corresponds to X downlink transmission slots. n' _U Is and downlink time slot n _D Uplink time slots overlapped in time, here, uplink reference time slot n 'corresponding to PDSCH' _U Is summed with a set of minimum number X of consecutive downlink time slots n _D One uplink slot overlapping in time, that is, at least one downlink slot containing a PDSCH in the period of the uplink reference slot. In fig. 2 (b), X =2.

Fig. 3 is a flowchart of an embodiment of a method for transmitting control information according to the present application.

The embodiment of the present application provides a control information transmission method, which is used for a BWP set, where the BWP set is composed of multiple BWPs supporting PUCCH transmission, and in the following embodiment, the BWP set includes a first BWP and a second BWP; the duration of the time unit of the first BWP is a first duration, the feedback timing value is a first parameter set, the duration of the time unit on the second BWP is a second duration, and the feedback timing value is a second parameter set. The method comprises the following steps:

step 101, determining a first target time unit located in a first BWP and a second target time unit located in a second BWP, where the first target time unit and the second target time unit overlap, and a target PUCCH for sending feedback information is located in the second target time unit.

Preferably, step 101 is initiated by using indication information, wherein the indication information is semi-static indication information or dynamic indication information.

The first method is as follows: and indicating the uplink cell/BWP to which the corresponding HARQ-ACK is transmitted in the PDCCH for scheduling the PDSCH. Independent PUCCH resources can be configured aiming at each uplink Bandwidth Part (BWP) of each cell, the PUCCH resource configuration comprises a time difference alternative K1 between the time position of the PDSCH and the time position of the corresponding HARQ-ACK feedback, and the K1 is based on mu of each BWP. And determining a time unit of the target PUCCH according to the K1 configuration of the uplink cell/BWP indicated by the PDCCH and the position of the PDSCH.

The second method comprises the following steps: the relationship between the cell and the time position for transmitting the PUCCH is preset semi-statically, for example, PUCCH is transmitted by PCell in the first time interval, PUCCH is transmitted by SCell in the second time interval, and … … is preset. Presetting a reference UL BWP, and determining the time difference between the time units of the PDSCH and the HARQ-ACK according to the time difference alternative K1 of the PUCCH configuration on the BWP. And the PUCCH where the HARQ-ACK feedback determined according to the time difference is located is the nominal PUCCH. And after the nominal PUCCH is determined to be positioned in the reference time unit, determining the BWP of the actually transmitted PUCCH after switching as the target PUCCH according to the relation among the time of the nominal PUCCH, the semi-statically preset PUCCH transmitting cell and the time position.

For example, the cell and time location for transmitting the PUCCH are semi-statically preset, including that the cell for transmitting the PUCCH is located in the second target time unit of the second BWP at the time location of the first target time unit.

For another example, the cell and time position for transmitting the PUCCH by dynamic scheduling are located in a second target time unit of the second BWP.

That is, in any embodiment of the first aspect of the present application, the target PUCCH is indicated to be located in the second target time unit by using dynamic indication information, or the target PUCCH is indicated to be located in the second target time unit by using semi-static indication information.

Step 102, determining a first data set and a second data set.

The first set of parameters is not equal to the second set of parameters, and/or the first duration is not equal to the second duration,

the time difference between each first reference time unit of the first data set and the first target time unit is respectively equal to the product of each parameter of the first parameter subset in the first parameter set and the first duration;

the first data set and the second data set do not overlap;

the second reference time unit is a time unit of a second BWP, an end time of each second reference time unit is the same as at least one time unit of the second data set, or a period of each second reference time unit contains at least one time unit of the first data set

Here, "reference time unit", such as the reference time slot shown in fig. 2, is a reference time unit defined in any carrier/BWP, and is used to determine whether the distance between the reference time unit and the target time unit in the carrier/BWP conforms to the feedback timing value in the carrier/BWP. For example, the reference time unit defined within the ith carrier/BWP is the ith reference time unit. Each ith reference time unit is aligned with the end time of one or a group of jth carrier/BWP time units. When the duration of the time unit in the jth carrier/BWP is greater than the time unit in the ith carrier/BWP, an ith reference time unit is the last jth carrier/BWP time unit that overlaps with the jth carrier/BWP time unit in time, i.e., the ith reference time unit is the same as the end time of the time unit in at least one jth carrier/BWP. When the duration of the jth time cell is less than the ith time cell, the ith reference time cell corresponding to the jth carrier/BWP time cell is an ith carrier/BWP time cell that is time-aligned with a minimum number of consecutive time cells of the jth carrier/BWP, i.e., the interval of the ith reference time cell contains at least one jth carrier/BWP time cell.

When the scheme of the application is used for HARQ-ACK feedback of downlink traffic data by the terminal device, further preferably, the first data set and the second data set include downlink traffic data, which are PDSCHs located in each time unit.

Preferably, at least one of the first data set and the second data set is a semi-statically scheduled PDSCH set. Preferably, the first parameter subset is a parameter indicated by first downlink control information, the first downlink control information is used for activating semi-persistent scheduling data, and the first downlink control information indicates that feedback of the semi-persistent scheduling data is located in the first target time unit. The first data set is a semi-statically scheduled PDSCH set, which is only an example, and does not exclude other situations of dynamic scheduling or semi-static scheduling combination, for example, the second data set is a dynamically scheduled PDSCH set or a semi-statically scheduled PDSCH set.

Preferably, at least one of the first data set and the second data set is a dynamically scheduled PDSCH set. The first data set is a dynamically scheduled PDSCH set, which is only an example, and does not exclude other situations of dynamic scheduling or semi-static scheduling combination, and for example, the second data set is a dynamically scheduled PDSCH set or a semi-static scheduled PDSCH set.

It should be noted that, the relationship between the first data set and the second data set and the first BWP and the second BWP is not limited herein. For example, it may be: at least a portion of the first data set is at the first BWP and/or at least a portion is at the second BWP. At least a portion of the second data set is at the first BWP and/or at least a portion is at the second BWP. Since the first data set or the second data set is defined by the location of the respective reference time unit, when the first data set is distributed over multiple BWPs, the time units of the data subsets of the multiple BWPs overlap, as do the second data set.

Therefore, it can be said that the first data set is downlink data in a time unit overlapping with the first reference time unit in all (or at least one) BWPs including the first BWP in the BWP set; the second data set is the downlink data in the time unit overlapping with the second reference time unit in all (or at least one) BWPs including the second BWP in the BWP set. A relationship between the first reference time unit and the first target time unit satisfies a first set of parameters; the relationship between the second reference time unit and the second target time unit satisfies the second set of parameters.

And 103, determining a subset of the second data set, namely a third data set and/or a fourth data set.

And the time difference between each second reference time unit of the third data set and the second target time unit is equal to the product of each parameter of the second parameter subset in the second parameter set and the duration of the second time unit in sequence. Note that the second subset of parameters is defined here, either as a proper subset of the second set of parameters, or as the second set of parameters itself.

The time difference between each first reference time unit of the fourth data set and the first target time unit is respectively equal to the product of each parameter of the third parameter subset in the first parameter set and the first duration.

The first set of parameters includes the first subset of parameters and the third subset of parameters. Note that a third subset of parameters is defined here, which may be the complement of the first subset of parameters in the first set of parameters.

When the first parameter subset and the third parameter subset are disjoint, the third data set and the fourth data set are both subsets of the second data set. It should be noted that, as can be understood by those skilled in the art, there exists a fifth data set, and the time difference between each first reference time unit and the first target time unit in the fourth data set is respectively equal to the product of each parameter in the first parameter set and the first time duration.

When the first parameter subset and the third parameter subset are disjoint, the time unit of the first data set and the time unit of the fourth data set are subsets of the time unit of the fifth data set.

It should be noted that, in step 103, the range of the fed-back data can be further defined by setting the second parameter subset and/or the third parameter subset.

And 104, determining the content of the feedback information transmitted by the second target time unit.

The feedback information includes feedback on the first data set in the first BWP, and further may include feedback on the third data set and the fourth data set.

When the feedback information uses the HARQ-ACK codebook, a semi-static HARQ-ACK codebook or a dynamic HARQ-ACK codebook may be used. When the semi-static HARQ-ACK codebook is used, the HARQ-ACK information of each carrier is cascaded into the HARQ-ACK codebook, and for the time unit of the fed-back data set, which does not receive the PDSCH, the corresponding information in the HARQ-ACK codebook is NACK. And when the dynamic HARQ-ACK codebook is used, the HARQ-ACH codebook is generated based on the number of actually scheduled PDSCHs. Further, the HARQ-ACK feedback information of the SPS PDSCH is attached to the dynamic HARQ-ACK information generated based on the C-DAI and the T-DAI to form a dynamic HARQ-ACK codebook.

Preferably, the first data set is a data set determined according to second downlink control information, the second downlink control information includes a counting downlink allocation indication (C-DA 1) and/or a total downlink allocation indication (T-DAI), and the second downlink control information indicates that the feedback of the scheduled data is located in the first target time unit.

Preferably, the second downlink control information and the third downlink control information count downlink allocation indications and/or total downlink allocation indications jointly. In step 104, the ranges of the first data set and the fourth data set can be further determined by the second downlink control information and the third downlink control information. That is, in each time unit of the first data set or the fourth data set, when there is no PDSCH transmitted in some time units, the indication may be performed through the second downlink control information and the third downlink control information.

Therefore, a first data set actually containing the PDSCH can be determined by the second downlink control information, or, as can be understood by those skilled in the art, when the first data set is determined by the first parameter subset, further, in combination with the second downlink control information, an xth data set actually containing the PDSCH can be further determined. A third data set actually containing PDSCH can be determined by the third downlink control information, or, as will be understood by those skilled in the art, when the third data set is determined by the second parameter subset, a y data set actually containing PDSCH can be further determined by combining the third downlink control information.

And 105, generating and transmitting the HARQ-ACK codebook of the feedback information.

Feedback information is contained in a target PUCCH located in a second target time unit of a second BWP.

The feedback information comprises feedback on a first set of data;

further, the feedback information further comprises feedback of a third set of data, and/or the feedback information comprises feedback of a fourth set of data.

As an alternative embodiment in step 105, the PDCCH for scheduling the PDSCH includes an indication of the BWP where the target PUCCH is located, where the "target PUCCH" carrying the feedback information is located in a second target time unit of a second BWP (for example, located in the target cell, BWP); if not, the "nominal PUCCH" located in the first target time unit of the first BWP corresponding to the second target time unit location should carry feedback of the SPS PDSCH in the fifth data set, and the time unit where the nominal PUCCH is located and the time unit where the target PUCCH is located overlap in time. At this time, if the semi-static HARQ-ACK codebook scheme is used, the SPS PDSCH in the first data set corresponding to the nominal PUCCH of the other uplink cell/BWP is added to the PDSCH set corresponding to the semi-static HARQ-ACK codebook in the target PUCCH. As shown in FIG. 4, HARQ-ACK codebook transmitted in the target PUCCH of the slot n includes HARQ-ACK feedback information of PDSCH of the slot where SPS0 is located in BWP 1.

At this time, if the dynamic HARQ-ACK codebook scheme is used, the HARQ-ACK codebook in the target PUCCH should also include the time domain bits of the PDSCH corresponding to the semi-static HARQ-ACK codebook in all the nominal PUCCHs.

As another alternative embodiment in step 105, the target PUCCH for semi-static pre-set PUCCH transmission is located in the reference uplink carrier UL BWP. The "target PUCCH" actually carrying the feedback information is located in a second target time unit of a second BWP (e.g., target cell, BWP); if not, the "nominal PUCCH" located in the first target time unit of the first BWP corresponding to the second target time unit location should carry feedback of PDSCH in the fifth data set. If the semi-static HARQ-ACK codebook mode is used, the time domain position set of the PDSCH corresponding to the semi-static HARQ-ACK codebook in the target PUCCH is determined by the time domain positions of the PDSCH corresponding to all the nominal PUCCH semi-static HARQ-ACK codebooks. That is, feedback for the PDSCH of the first set of data in the nominal PUCCH is to be included. For example, in fig. 5, the HARQ-ACK codebook transmitted on the target PUCCH of slot n includes HARQ-ACK feedback information of the PDSCH of the slot where D is located in BWP 1.

It should be further noted that, in any embodiment of the first aspect of the present application, the feedback information may also be sent in a PUSCH time-overlapped with the target PUCCH on the second BWP.

The meaning of the first to second BWPs, the first to second target time units, the first to second reference time units, the first to second parameter sets, the first to third parameter subsets, and the first to fifth data sets are further described below with reference to the embodiments of fig. 4 to 5.

Fig. 4 is a diagram of an embodiment in which a target PUCCH retains first BWP semi-persistent scheduling PDSCH feedback when BWP supporting transmission of the PUCCH includes a plurality of BWPs.

When the network device activates SPS configuration, a certain uplink cell/BWP is used as a feedback cell/BWP (e.g., BWP 1) of HARQ-ACK corresponding to the SPS PDSCH. Indicated in the "PDSCH-to-HARQ-timing-indicator" field of the PDCCH activating the SPS configuration is the time difference between the SPS PDSCH and the slot m in which the "nominal PUCCH" is located (i.e., the first time unit of the first BWP). However, since the PUCCH is switched to other BWPs, it is possible that the "target PUCCH" actually transmitted within the time of slot m of the "nominal PUCCH" is located in slot n of BWP2 (i.e., the second target time unit of the second BWP). According to the method for determining the semi-static HARQ-ACK codebook in the prior art, if the indexes μ of the OFDM parameter configuration sets of BWP1 and BWP2 are different and/or the timing parameter sets of the PUCCH configured on BWP1 and BWP2 are different, the HARQ-ACK information of the partial SPS PDSCH may not be fed back in the PUCCH located in the second target time unit, which may eventually cause the HARQ-ACK transmission failure of the SPS PDSCH, and affect the performance of HARQ transmission and the system efficiency.

Taking the difference between the index numbers μ of the OFDM parameter configuration sets of BWP1 and BWP2 as an example: suppose UL Cell-1 currently activates BWP1, the index number mu of OFDM parameter configuration set of BWP1 _BWP1 K1 in PUCCH configuration on =1,bwp1 _BWP1 =2,3,4,5. UL Cell-2 currently activates BWP2, and index number of OFDM parameter configuration set of BWP2 is mu _BWP2 And =0. K1 in PUCCH configuration on WP2 _BWP2 = {2,3,4,5}. If the PDCCH activating SPS indicates that the SPS PDSCH and HARQ-ACK feedback are positioned in BWP1, and the time unit time difference of the SPS PDSCH and HARQ-ACK is 2, then the HARQ-ACK corresponding to the SPS0 PDSCH is positioned in a time slot m of BWP1 in figure 4. However, at the time of slot m, the PUCCH is located in slot n of BWP 2. According to the prior art, the PDSCH time domain position set corresponding to the semi-static HARQ-ACK codebook on the timeslot n of BWP2 includes the PDSCH from timeslot a to timeslot H in BWP1, and the PDSCH from timeslot I to timeslot L in BWP2, but does not include the PDSCH from the timeslot where SPS0 is located in BWP 1. Thus, the requirement for HARQ-ACK feedback corresponding to SPS PDSCH cannot be met.

To this end, according to an embodiment of the first aspect of the present application, the first BWP is defined as BWP1, and the second BWP is defined as BWP2; the first target time unit is a time slot m, and the second target time unit is a time slot n; defining a first set of data comprising a PDSCH located in time unit SPS0; a fifth data set comprising PDSCH in time unit F, G, H, SPS; a second data set comprising PDs in time units A, B, C, D, E, F, G, H, I, J, K, LSCH; the third data set and the fourth data set are subsets of the second data set, and the time unit of the fourth data set is a subset of the time unit of the fifth data set; the first reference time unit is defined at BWP1, and the second reference time unit is defined at BWP2; the first reference time unit of the first set of data is SPS0; the second reference time unit of the second data set is I, J, K, L, the second reference time unit of the third data set is a subset of I, J, K, L, and the first reference time unit of the fourth data set is a subset of F, G, H. Wherein BWP2 time unit I time overlaps a group of BWP1 time units A, B, BWP2 time unit J time overlaps a group of BWP1 time units C, D, BWP2 time unit K time overlaps a group of BWP1 time units E, F, and BWP2 time unit L time overlaps a group of BWP1 time units G, H. The first definite number set is K1 _BWP1 = {5,4,3,2} the second parameter set is K1 _BWP2 ＝{5，4，3，2}。

The positions of the first data set, the second data set, the third data set, the fourth data set and the fifth data set are determined according to the method of steps 102 to 103. The positions between the time units of the first data set, the second data set, the third data set, the fourth data set and the fifth data set and the first target time unit and the second target time unit satisfy the following characteristics:

the time difference between each first reference time unit F, G, H, SPS of the fifth data set and the first target time unit timeslot m is equal to the product of each parameter {5,4,3,2} of the first parameter set and the first time length in sequence; since the fifth data set is only in BWP1, each time unit of the fifth data set is F, G, H, SPS.

The time difference between each second reference time unit I, J, K, L of the second data set and the second target time unit time slot n is equal to the product of each parameter {5,4,3,2} of the second parameter set and the second duration in sequence; each time unit of the second data set includes A, B, C, D, E, F, G, H, I, J, K, L.

The time difference between the first reference time unit SPS0 of the first data set and the first target time unit slot m is equal to a product of the parameter {2} of the first subset of parameters in the first set of parameters and the first time length. The time unit of the first set of data is SPS0.

In the target PUCCH of slot n, feedback on the first data set and the third data set is included.

It should be noted that the third data set is a subset of the second data set. The range of the third set of data can be determined when the time unit of the third set of data is indicated by downlink control signaling containing a second subset of parameters. For example, the second subset of parameters is {2,3}, the second reference time unit for the third data set is K, L, and the time unit for the third data set comprises E, F, G, H, K, L.

It should also be noted that the first data set is a subset of the fifth data set. When the first data set is indicated by downlink control signaling containing the first parameter subset, or according to the time position relationship between the fifth data set and the second data set, the time unit range of the first data set which is not overlapped with the second data set can be determined to be SPS0.

There is an intersection F, G, H for each time unit of the second data set and the fifth data set, so HARQ-ACK feedback for PDSCH of time unit F, G, H only needs to occur 1 time in the second target time unit. When the third subset of parameters is defined as {3,4,5}, then each first reference time unit of the fourth set of data is F, G, H, which is also F, G, H.

In this embodiment, it is assumed that the fifth data set is the SPS PDSCH indicated by the PDCCH activating SPS, and the PUCCH is switched from BWP1 to BWP2 by dynamic signaling, so that the first data set that does not overlap with the time unit of the second data set is the SPS PDSCH, and the fourth data set that overlaps with the time unit of the second data set is changed to the dynamic PDSCH.

When the feedback information uses a semi-static HARQ-ACK codebook, the HARQ-ACK codebook is generated by cascading the feedbacks of the first data set and the third data set according to BWP1 and BWP 2. It should be further noted that, when the third data set is indicated by the downlink control signaling containing the dynamic codebook indication, the format and the content of the codebook in the target PUCCH can be further determined.

In the embodiment, when the PUCCH is supported to be switched among a plurality of BWPs, HARQ-ACK feedback of PDSCH in a time unit SPS0 is ensured.

Fig. 5 is a diagram illustrating an embodiment of reserving first BWP dynamic PDSCH scheduling feedback when BWP supporting PUCCH transmission includes a plurality of BWPs.

When the relation between the cell for sending the PUCCH and the time position is semi-statically preset, the time domain position set of the PDSCH of the HARQ-ACK codebook on the "target PUCCH" determined according to the prior art may not include the time domain position of the PDSCH corresponding to the HARQ-ACK codebook in the partial "nominal PUCCH". Suppose UL Cell-1 currently activates BWP1, the OFDM parameter configuration set index number mu of BWP1 _BWP1 K1 in PUCCH configuration on 1,bwp1 _BWP1 = {2,3,4,5}, UL Cell-2 currently activates BWP2, and index number of OFDM parameter configuration set of BWP2 is μ _BWP2 K1 in PUCCH configuration on bwp2 =0, _BWP2 = {2,3,4,5}. If the time difference among the PUCCH time difference alternative K1 of BWP1, the time difference among the time slots of PDSCH and HARQ-ACK and the OFDM parameter configuration set index number mu of BWP1 are adopted ₁ The corresponding slot length determines slot m of "nominal PUCCH" in BWP1, and the set of PDSCH temporal positions corresponding to the HARQ-ACK codebook on "nominal PUCCH" includes slot A, B, C, D in BWP1 and slot L, M in BWP 2. And determining the time slot n of the target PUCCH at BWP2 according to the preset relation between the cell for transmitting the PUCCH and the time position. Configuring set index number mu with OFDM parameter of BWP2 for target PUCCH of BWP2 slot n ₂ The corresponding time slot length determination HARQ-ACK codebook comprises PDSCH of time slot A, B, C, E, F, G, H, I in BWP1 and PDSCH of time slot J, K, L, M in BWP 2. Because the HARQ-ACK codebook of the target PUCCH does not include the PDSCH of slot D in BWP1, HARQ-ACK cannot be fed back to the PDSCH scheduled by slot D in BWP1, which causes data scheduling limitation and affects system efficiency.

To this end, according to embodiments of the first aspect of the present application, definitions are providedThe first BWP is BWP1, and the second BWP is BWP2; the first target time unit is a time slot m, and the second target time unit is a time slot n; defining a first data set containing PDSCH located in time unit D, and a fifth data set containing PDSCH located in time unit A, B, C, D; a second data set comprising PDSCH at time unit J, K, L, M, E, F, G, H, I, A, B, C; the third data set and the fourth data set are subsets of the second data set, and the time unit of the fourth data set is a subset of the time unit of the fifth data set; the first reference time unit is defined at BWP1, and the second reference time unit is defined at BWP2; the first reference time unit of the first data set is D; the second reference time unit of the second data set is J, K, L, M; a second reference time unit of the third set of data is a subset of J, K, L, M; the time unit of the fifth data set is A, B, C, D determined according to the first parameter set and the first target time unit; the first reference time unit of the fifth data set is A, B, C, and further, it is determined that the time unit of the fifth data set further includes L, M. The first reference time unit of the fourth set of data is a subset of A, B, C. BWP2 time cell J time overlaps a set of BWP1 time cells E, F, BWP2 time cell K time overlaps a set of BWP1 time cells G, H, BWP2 time cell L time overlaps a set of BWP1 time cells I, A, and BWP2 time cell M time overlaps a set of BWP1 time cells B, C. The first set of timing parameters is K1 _BWP1 = {5,4,3,2}, and the second timing parameter set is K1 _BWP2 ＝{5，4，3，2}。

each first reference time unit A, B, C, D of the fifth data set is in turn multiplied by the first target time unit slot m by a time difference equal to each parameter {5,4,3,2} of the first timing parameter set, wherein, in particular, the end time of time unit D does not coincide with the time unit end time of BWP2, and therefore time unit D, although satisfying data 2 in the first parameter set, cannot serve as the first reference time unit of data on BWP2, and therefore, using A, B, C as the first reference time unit further determines that the time unit of the fifth data set further includes L, M;

the time difference between each second reference time unit J, K, L, M of the second data set and the second target time unit time slot n is equal to the product of each parameter {5,4,3,2} of the second timing parameter set and the second duration in sequence; each time unit of the second data set includes A, B, C, E, F, G, H, I, J, K, L, M.

A time difference between a first reference time unit D of the first data set and the first target time unit slot m is equal to a first parameter subset {2} of a first parameter set multiplied by a first duration; time unit D is the time unit of the first data set.

It should be noted that the third data set is a subset of the second data set. The range of the third set of data can be determined when the time unit of the third set of data is indicated by downlink control signaling containing a second subset of parameters. For example, the second subset of parameters is {2,3}, the second reference time unit for the third set of data is M, L, and the time unit for the third set of data comprises I, A, B, C, L, M.

It should also be noted that the first data set is a subset of the fifth data set. When the first data set is indicated by downlink control signaling containing the first parameter subset, or according to a time position relationship between the fifth data set and the second data set, it can be determined that a time unit range of the first data set which is not coincident with the second data set is D.

There is an intersection A, B, C for each time unit of the second data set and the fifth data set, so HARQ-ACK feedback for PDSCH in time unit A, B, C only needs to occur 1 time in the second target time unit. When the third subset of parameters is defined as {3,4,5}, then each first reference time unit of the fourth set of data is A, B, C, which is also A, B, C.

In this embodiment, it is assumed that the fifth data set is of a PDSCH indicated by a dynamic PDCCH, and the PUCCH is determined to be located in the second BWP by semi-static signaling, so that the first data set that does not overlap with a time unit of the second data set and the fourth data set that overlaps with a time unit of the second data set are both dynamic PDSCHs.

In this embodiment, PUCCH also implements HARQ-ACK feedback of PDSCH in time unit D after BWP handover.

In this embodiment, if the relation between the cell transmitting PUCCH and the time position is semi-statically preset, a reference UL BWP is preset, and the time difference between the PDSCH and the time unit of HARQ-ACK is determined with the time difference option K1 configured for PUCCH on this BWP. And the PUCCH where the HARQ-ACK feedback determined according to the time difference is located is the nominal PUCCH. And after the nominal PUCCH is determined to be positioned in the reference time unit, determining the BWP of the PUCCH actually transmitted after switching as the target PUCCH according to the relation among the time of the nominal PUCCH, the semi-statically preset PUCCH transmitting cell and the time position. The data set corresponding to the feedback information in the target PUCCH is determined by the parameter set and the time unit length configured on the BWP where the nominal PUCCH is located, but not by the parameter set and the time unit length configured on the BWP where the target PUCCH is located, so that the HARQ-ACK feedback information corresponding to downlink data transmission can be guaranteed to be included in the target PUCCH. For example, in the example shown in fig. 5, the HARQ-ACK codebook in the "target PUCCH" is determined by the feedback of the first data set and the fifth data set.

Fig. 6 is a flowchart of an embodiment of the method of the present invention applied to a terminal device.

The method of the first aspect of the present application is applied to a terminal device, and includes the following steps 201 to 204:

step 201, the terminal device obtains indication information for indicating that the feedback information is sent on the target PUCCH;

for example, switching a time unit transmitting feedback information from a first target time unit located at a first BWP to a second target time unit located at a second BWP;

alternatively, the time unit indicating the transmission of the feedback information is a second target time unit of the second BWP.

Step 202, the terminal device receives a downlink control signaling, which includes an indication of a feedback timing value and/or an indication of a codebook type.

The terminal equipment receives an indication for activating the first parameter set and the second parameter set through a downlink control signaling;

further, the downlink control signaling received by the terminal device includes first downlink control information for identifying a first parameter subset, a second parameter subset, and a third parameter subset;

further, the downlink control signaling received by the terminal device further includes second downlink control information and/or third downlink control information, and is used to instruct to generate a dynamic HARQ-ACK codebook for the first data set and/or the third data set.

Step 203, the terminal device determines the content and the position of the first data set and the second data set;

the definitions and interrelations of the first parameter set, the second parameter set, the first duration, the second duration, the first target time unit, the second target time unit, the first reference time unit, the second reference time unit, the first data set, and the second data set are shown in steps 101 to 105, and are not repeated herein.

The terminal equipment determines a second data set according to the second parameter set, the second duration and the position of a second target time unit; and determining a first data set according to the first parameter set, the first duration, the position of the first target time unit and the position of the second data set.

For example, if the nominal PUCCH is located in the first target time unit and the target PUCCH is located in the second target time unit, then:

determining a nominal PUCCH, wherein the nominal PUCCH is located at a first BWP, and the time unit length of the first BWP is S ₁ The set of PUCCH timing feedback parameters configured by the first BWP is a first parameter set; determining a target PUCCH, wherein the target PUCCH is located at a second BWP, and the time unit length of the second BWP is S ₂ The set of PUCCH timing feedback parameters configured by the second BWP is a second parameter set; wherein S ₁ ≠S ₂ And/or the first timing parameter set is not equal to the second timing parameter set; the time units of the nominal PUCCH and the target PUCCH overlap in time;

on the first BWP, the time difference between HARQ-ACK in the nominal PUCCH and the corresponding PDSCH is S ₁ And a first parameter set determination. On the second BWP, the time difference between the HARQ-ACK in the target PUCCH and the corresponding PDSCH is S ₂ And a second parameter set determination. The method for determining the target PUCCH and the nominal PUCCH by the UE comprises any one of the following two ways:

the first method is as follows:

the PDCCH that schedules the PDSCH indicates which uplink cell/BWP the corresponding HARQ-ACK is transmitted in, for example, the second BWP is specified. And configuring independent PUCCH resources for the UE aiming at each BWP, wherein each PUCCH time difference alternative set takes the time unit corresponding to each mu as granularity. And determining the time unit of the target PUCCH according to the timing parameter indication of the PDCCH, the PUCCH timing difference set of the second BWP, namely the second parameter set, the time unit length of the second BWP and the position of the PDSCH.

The time unit of the nominal PUCCH and the target PUCCH is overlapped in time and is positioned at a first BWP, and the PUCCH timing difference set configured at the first BWP is a first parameter set.

The second method comprises the following steps:

the relation between the cell and the time position for transmitting the PUCCH is preset semi-statically, for example, PUCCH is transmitted by the PCell in the first time interval, PUCCH is transmitted by the SCell in the second time interval, and … … are preset. A reference UL BWP is preset and is marked as a first BWP. The time unit of the nominal PUCCH is determined according to the timing difference indication of the PDCCH, the PUCCH time difference alternate set (first parameter set) of the first BWP, the time unit length of the first BWP, and the location of the PDSCH. And determining the target PUCCH according to the time of the nominal PUCCH, the semi-statically preset PUCCH transmitting cell and the relation between the time positions.

According to the embodiment shown in fig. 4, the SPS activation procedure indicates that HARQ-ACK corresponding to SPS transmission is located in the first BWP. The SPS transmission includes any of the SPS PDSCH and the PDCCH for releasing SPS. According to the prior art, the first set of parameters represents alternatives to the time difference between the time position of the SPS PDSCH and its corresponding HARQ-ACK feedback time position, the time unit of these alternatives being S ₁ . The SPS activation indicates which of the alternatives is the time difference between the SPS transmission and the HARQ-ACK feedback time. In the target HARQ-ACK codebook on the second BWP, the PDSCH set to be fed back on the downlink BWP corresponding to the first BWP is a second parameter set and S ₂ And the time unit of the target PUCCH. In the nominal PUCCH on the first BWP, the PDSCH set to be fed back on the downlink BWP corresponding to the first BWP is a first parameter set and S ₁ And the time unit in which the nominal PUCCH is located. Thus, S ₁ ≠S ₂ And/or the first and second sets of parameters are not the same, it may be possible that the target HARQ-ACK codebook does not include a portion of the PDSCH that the nominal HARQ-ACK codebook should feed back.

According to the embodiment shown in FIG. 5, according to a second set of parameters, S ₂ The PDSCH to be fed back determined by the time unit of the target PUCCH may not comprise the parameter S according to the first parameter set ₁ And the PDSCH to be fed back is determined by the time unit where the nominal PUCCH is located.

Step 204, the terminal device generates and sends a target HARQ-ACK codebook, which includes feedback for the first data set.

And sending the target HARQ-ACK codebook, wherein the target HARQ-ACK codebook comprises feedback of the first data set.

Further, the target HARQ-ACK codebook further includes feedback for at least one of the second data set, the third data set, and the fourth data set.

For example, the terminal sends the target PUCCH and discards the nominal PUCCH, so that switching of a PUCCH channel between uplink BWPs is achieved, HARQ-ACK feedback requirements of each downlink BWP data transmission are met, load balancing between a PCell and an SCell is achieved, and HARQ-ACK feedback delay characteristics are improved.

The target PUCCH includes a target HARQ-ACK codebook including HARQ-ACK information of a first PDSCH set composed of PDSCHs having a time difference with a nominal PUCCH satisfying a first parameter subset, the first parameter subset being a subset of the first parameter set.

The target HARQ-ACK codebook in the target PUCCH comprises HARQ-ACK information on the nominal PUCCH, the requirement that the PUCCH is switched from the nominal PUCCH to the target PUCCH can be met, and the constraint that the HARQ feedback is switched between BWPs by the PUCCH is avoided. The target HARQ-ACK codebook includes HARQ-ACK information for a nominal PUCCH including the following steps 204-1 and or 204-2:

step 204-1, the time difference between the first PDSCH set and the nominal PUCCH is represented by S ₁ And a first subset of timing parameters, the first set of PDSCH being for SPS transmissions.

Using a 204-1 scheme, corresponding to a nominal PUCCH, with a first set of parameters, S ₁ And a first set of PDSCH determined by the first subset of parameters indicated in the SPS activation process, the feedback information being included in the target HARQ-ACK codebook.

And if the target HARQ-ACK codebook adopts a semi-static HARQ-ACK codebook, the HARQ-ACK information of the PDSCH to be fed back in each downlink BWP is sequentially arranged in the HARQ-ACK codebook. The PDSCH to be fed back for the downlink BWP corresponding to the first BWP includes two types: one is with the second set of timing parameters, S ₂ And a second PDSCH set determined by the time unit of the target PUCCH, and the other is a first parameter subset S ₁ And the nominal PUCCH isThe determined first set of PDSCH. Optionally, HARQ-ACK information of the PDSCH to be fed back of the downlink BWP corresponding to the first BWP is sorted in the target HARQ-ACK codebook according to the time sequence of the PDSCH. Or optionally, in the target HARQ-ACK, the second parameter set, S ₂ And the HARQ-ACK information of the second PDSCH set determined by the time unit of the target PUCCH is arranged in a first parameter subset S ₁ And the first PDSCH set determined by the time unit of the nominal PUCCH. That is, the feedback for the first data set and the feedback for the third data set occupy different information identification areas in the target feedback information; or the feedback aiming at the first data set and the feedback aiming at the fourth data set occupy different information identification areas in the target feedback information.

And if the target HARQ-ACK codebook adopts a dynamic HARQ-ACK codebook, acquiring the C-DAI and the T-DAI in the PDCCH according to the PDCCH monitoring opportunity set, and determining the PDSCH corresponding to each information of the HARQ-ACK codebook. On the basis, a first parameter subset S is added in the HARQ-ACK codebook ₁ And determining the HARQ-ACK information of the first PDSCH set according to the time unit of the nominal PUCCH. The C-DAI and T-DAI in the PDCCH corresponding to the data set of the additional HARQ-ACK information and the C-DAI and T-DAI in the PDCCH corresponding to the data set of the previous HARQ-ACK information are uniformly counted jointly.

Optionally, the target PUCCH further includes temporary uplink control information, where the temporary uplink control information is located in a nominal PUCCH, and the temporary uplink control information is located at a time position of the first BWP by S ₁ And (4) determining. If the nominal PUCCH also includes CSI, SR, etc. uplink control information, the nominal PUCCH may be discarded while the uplink control information is carried in the target PUCCH, and the uplink control information configured by the network device is located in the first BWP, where the transmission period or transmission time of the uplink control information is determined by the time unit length S of the first BWP ₁ And (4) determining. According to the prior art, the second BWP has no resource configured for transmitting the uplink control information, and discarding the nominal PUCCH means discarding the uplink control information. The information is carried in the target PUCCH, so that the transmission efficiency of the control information can be improved, and the improvement of the transmission efficiency of the control information is promotedThe system performance.

Step 204-2, the time difference between the first PDSCH set and the nominal PUCCH is represented by S ₁ And first timing parameter subset determination

In the embodiment shown in FIG. 5, according to the second parameter set, S ₂ The PDSCH to be fed back, which is determined by the time unit where the target PUCCH is located, may not comprise the parameter S according to the first parameter subset ₁ And a first set of PDSCH determined by the time unit of the nominal PUCCH. When the scheme of step 304-2 is adopted and the target HARQ-ACK codebook is determined, the second parameter set and the S are not used ₂ And the standby PDSCH determined by the time unit of the target PUCCH, but uses the first parameter set, S ₁ And the PDSCH to be fed back is determined by the time unit where the nominal PUCCH is located.

It should be noted that, in the present application, if multiple nominal PUCCHs and target PUCCHs overlap in time, the relationship between the HARQ-ACK codebook in the target PUCCH and the HARQ-ACK information on each nominal PUCCH satisfies the embodiments described in the present application. If the multiple channels and the nominal PUCCH are overlapped in time, the relation between the HARQ-ACK codebook and the HARQ-ACK information on the nominal PUCCH can meet the implementation mode of the application when any one of the multiple channels is taken as the target PUCCH.

Fig. 7 is a flowchart of an embodiment of the method of the present invention applied to a network device.

The method of the first aspect of the present application is applied to a network device, and includes the following steps 301 to 304:

step 301, the network device sends indication information, configured to indicate that the feedback information is sent on the target PUCCH.

For example, the time unit transmitting the feedback information is switched from a first target time unit located at a first BWP to a second target time unit located at a second BWP.

Step 302, the network device sends a downlink control signaling, which includes an indication of a feedback timing value and/or an indication of a codebook type.

The network equipment sends an indication for activating the first parameter set and the second parameter set through a downlink control signaling;

further, the downlink control signaling includes first downlink control information for identifying a first parameter subset, a second parameter subset, and a third parameter subset;

further, the downlink control signaling further includes second downlink control information and/or third downlink control information, which is used to instruct to generate a dynamic HARQ-ACK codebook for the first data set and/or the third data set.

Step 303, the network device determines the content and the location of the first data set and the second data set.

The network equipment determines a second data set according to a second parameter set, a second duration and the position of a second target time unit; and determining the first data set according to the first parameter set, the first duration, the position of the first target time unit and the position of the second data set.

Step 304, the network device receives the target HARQ-ACK codebook and obtains the feedback of the first data set.

And the network equipment further acquires feedback of at least one set of a second data set, a third data set and a fourth data set after receiving the target HARQ-ACK codebook.

Fig. 8 is a schematic diagram of an embodiment of a network device.

The embodiment of the present application further provides a network device, and with use of the method in any embodiment of the present application, the network device is configured to send the indication information, and is configured to indicate that the feedback information is sent on the target PUCCH. Determining a first target time unit located at a first BWP and a second target time unit located at a second BWP;

the network device is further configured to determine the positions of the first data set and the second data set, and further, determine a third data set, a fourth data set and a fifth data set. The network redundancy device is further configured to determine a first parameter subset, a second parameter subset, and a third parameter subset. The network device is further configured to determine a format of a HARQ-ACK codebook of the feedback information.

The network device is further configured to receive the feedback information, identify feedback of the first data set, and further identify feedback of at least one of the second data set, the third data set, and the fourth data set.

In order to implement the foregoing technical solution, the network device 400 provided in the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403.

The network sending module is configured to send indication information, and further, is further configured to send the downlink service data, which includes the PDSCH of the first data set, the second data set, the third data set, and the fourth data set; the network sending module is further configured to send at least one of the first downlink control information, the second downlink control information, and the third downlink control information.

The network determining module is configured to determine positions and contents of the first data set and the second data set, and is further configured to determine a position of at least one of the third data set and the fourth data set, and the network determining module is further configured to determine first downlink control information according to the first parameter subset; and determining second downlink control information according to the first data set, and determining third downlink control information according to the third data set.

The network receiving module is configured to receive the feedback signal according to a second time unit position and the format of the HARQ-ACK codebook, obtain feedback information of the first data set, and further obtain feedback information for at least one of the second data set, the third data set, and the fourth data set.

The specific method for implementing the functions of the network sending module, the network determining module, and the network receiving module is described in the embodiments of the methods of the present application, and is not described herein again.

The network device may be a base station device or a network side processing device connected to a base station.

Fig. 9 is a schematic diagram of an embodiment of a terminal device.

The present application further provides a terminal device, which uses the method of any one of the embodiments of the present application, and is configured to: and receiving the indication information, wherein the indication information is used for indicating that the feedback information is sent in the target PUCCH. Determining a first target time unit located at a first BWP and a second target time unit located at a second BWP; the device is also used for receiving a first parameter set and a second parameter set; and is also used for receiving downlink service data.

The terminal device is further configured to: determining a first data set and a second data set; the data processing device is further used for determining a third data set, a fourth data set and a fifth data set; and determining a first parameter subset, a second parameter subset and a third parameter subset according to the downlink control information. The terminal device is further configured to determine a HARQ-ACK codebook for feedback information, including the feedback information.

The terminal device is further configured to: and sending the HARQ-ACK codebook, wherein the HARQ-ACK codebook comprises feedback on the first data set, and further comprises feedback on at least one of the second data set, the third data set and the fourth data set.

In order to implement the foregoing technical solution, the terminal device 500 provided in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503.

The terminal receiving module is configured to receive indication information, and further configured to receive the downlink service data including the PDSCH of the first data set, the second data set, the third data set, and the fourth data set, and the terminal receiving module is further configured to receive first downlink control information, second downlink control information, and third downlink control information.

The terminal determining module is used for determining the positions and contents of the first data set and the second data set and also used for determining the position of at least one of the third data set and the fourth data set; the terminal determining module is used for determining a first parameter subset according to the first downlink control information; determining a dynamic HARQ-ACK codebook fed back to the first data according to the second downlink control information; and determining a dynamic HARQ-ACK codebook fed back to the third data according to the third downlink control information.

And the terminal sending module is configured to send the feedback signal according to a second target time unit position and the format of the HARQ-ACK codebook, where the feedback signal includes feedback for the first data set, and further includes feedback for at least one of the second data set, the third data set, and the fourth data set. .

The terminal equipment can be mobile terminal equipment.

Fig. 10 is a schematic structural diagram of a network device according to another embodiment of the present invention. As shown, network device 600 includes a processor 601, a wireless interface 602, and a memory 603. Wherein the wireless interface may be a plurality of components, i.e. including a transmitter and a receiver, providing means for communicating with various other apparatus over a transmission medium. The wireless interface realizes the communication function with the terminal equipment, wireless signals are processed through the receiving and transmitting devices, and data carried by the signals are communicated with the memory or the processor through the internal bus structure. The memory 603 contains a computer program that executes any of the embodiments of the present application, running or changed on the processor 601. When the memory, the processor and the wireless interface circuit are connected through a bus system. The bus system includes a data bus, a power bus, a control bus, and a status signal bus, which are not described herein.

Fig. 11 is a block diagram of a terminal device of another embodiment of the present invention. The terminal device 700 comprises at least one processor 701, a memory 702, a user interface 703 and at least one network interface 704. The various components in the terminal device 700 are coupled together by a bus system. A bus system is used to enable connection communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

The user interface 703 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch pad, or a touch screen, among others.

The memory 702 stores executable modules or data structures. The memory may have stored therein an operating system and an application program. The operating system includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application programs include various application programs such as a media player, a browser, and the like for implementing various application services.

In the embodiment of the present invention, the memory 702 contains a computer program for executing any of the embodiments of the present application, and the computer program runs or changes on the processor 701.

The memory 702 contains a computer readable storage medium, and the processor 701 reads the information in the memory 702 and combines the hardware to complete the steps of the above-described method. In particular, the computer-readable storage medium has a computer program stored thereon, which when executed by the processor 701 implements the steps of the method embodiments as described in any of the embodiments above.

The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the method of the present application may be implemented by hardware integrated logic circuits in the processor 701 or by instructions in the form of software. The processor 701 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, an off-the-shelf programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (CPUs), an input/output user interface, a network interface, and a memory.

Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application therefore also proposes a computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of the embodiments of the present application. For example, the

memory

603, 702 of the present invention may include volatile memory in a computer readable medium, random Access Memory (RAM) and/or nonvolatile memory such as Read Only Memory (ROM) or flash memory (flash RAM).

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

Based on the embodiments in fig. 8 to 11, the present application further provides a mobile communication system, which includes at least 1 embodiment of any terminal device in the present application and/or at least 1 embodiment of any network device in the present application.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

It should be noted that "first", "second", "third", "fourth" and "fifth" in this application are used to distinguish objects having the same name, and are not intended to directly indicate order or size, and have no other special meaning unless specifically stated.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A control information transmission method, used in a BWP set condition, where the BWP set consists of BWPs supporting PUCCH transmission, and the BWP set includes a first BWP and a second BWP; the duration of the time unit of the first BWP is a first duration, the feedback timing value is a first parameter set, the duration of the time unit on the second BWP is a second duration, and the feedback timing value is a second parameter set; it is characterized in that the preparation method is characterized in that,

including feedback information in a target PUCCH that is located at a second target time unit of a second BWP, the second target time unit overlapping a first target time unit located at the first BWP;

the first reference time unit is a time unit of a first BWP, and the ending time of each first reference time unit is the same as at least one time unit of the first data set, or the period of each first reference time unit comprises at least one time unit of the first data set;

the first data set and the second data set do not overlap;

2. The control information transmission method of claim 1,

the feedback information further comprises feedback of a third set of data;

and the time difference between each second reference time unit of the third data set and the second target time unit is equal to the product of each parameter of the second parameter subset in the second parameter set and the duration of the second time unit in sequence.

3. The control information transmission method of claim 1,

the feedback information comprises feedback of a fourth data set, and time differences between each first reference time unit and the first target time unit of the fourth data set are respectively equal to the product of each parameter of a third parameter subset in the first parameter set and the first duration;

the first set of parameters includes the first subset of parameters and the third subset of parameters.

4. The control information transmission method of claim 1,

the first subset of parameters is parameters indicated by first downlink control information, the first downlink control information is used for activating semi-persistent scheduling data, and the first downlink control information indicates that feedback of the semi-persistent scheduling data is located in the first target time unit.

5. The control information transmission method of claim 1,

the first data set is determined according to second downlink control information, the second downlink control information includes a counting downlink allocation indication and/or a total amount downlink allocation indication, and the second downlink control information indicates that feedback of scheduled data is located in the first target time unit.

6. The control information transmission method of claim 2,

the third data set is a data set indicated by third downlink control information, where the third downlink control information includes a counting downlink allocation indication and/or a total downlink allocation indication, and the third downlink control information indicates that feedback of the scheduled data is located in the second target time unit.

7. The control information transmission method of claim 6,

the first data set is determined according to second downlink control information, the second downlink control information includes a counting downlink allocation indication and/or a total amount downlink allocation indication, and the second downlink control information indicates that the feedback of the scheduled data is located in the first target time unit;

counting downlink allocation indications and/or total downlink allocation indication joint counting in the second downlink control information and the third downlink control information.

8. The control information transmission method of claim 1,

transmitting or receiving the feedback information on the PUSCH that is time-overlapped with the target PUCCH on the second BWP.

9. The control information transmission method of claim 1,

and indicating the target PUCCH to be positioned in a second target time unit by using dynamic indication information, or indicating the target PUCCH to be positioned in the second target time unit by using semi-static indication information.

10. The control information transmission method according to any one of claims 1 to 9, for a terminal device, characterized by comprising the steps of:

the terminal equipment acquires indication information and is used for indicating that the feedback information is sent in the target PUCCH;

determining a second data set according to the second parameter set, the second duration and the position of a second target time unit;

determining a first data set according to the first parameter set, the first duration, the position of the first target time unit and the position of the second data set;

and sending the feedback information, including feedback on the first data set.

11. The control information transmission method according to any one of claims 1 to 9, for a network device,

the network equipment sends indication information, which is used for indicating that the feedback information is sent in the target PUCCH;

receiving the feedback information, identifying feedback to the first set of data.

12. A terminal device, configured to implement the method according to any one of claims 1 to 10, wherein the terminal device is configured to: receiving indication information for indicating that the feedback information is sent in the target PUCCH; determining a second data set according to the second parameter set, the second duration and the position of a second target time unit; determining a first data set according to the first parameter set, the first duration, the position of the first target time unit and the position of the second data set; and sending the feedback information, including feedback on the first data set.

13. A network device, configured to implement the method of any one of claims 1 to 9 and 11, wherein the network device is configured to: sending indication information for indicating that the feedback information is sent in the target PUCCH; determining a second data set according to the second parameter set, the second duration and the position of a second target time unit; determining a first data set according to the first parameter set, the first duration, the position of the first target time unit and the position of the second data set; receiving the feedback information, identifying feedback to the first set of data.

14. A communication device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 11.

15. A computer-readable medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 11.

16. A mobile communication system comprising at least 1 terminal device according to claim 12 and/or at least 1 network device according to claim 13.