WO2023010807A1

WO2023010807A1 - Control information transmission method, and devices

Info

Publication number: WO2023010807A1
Application number: PCT/CN2022/070447
Authority: WO
Inventors: 王志勤; 闫志宇; 沈霞; 杜滢; 焦慧颖; 刘晓峰
Original assignee: 中国信息通信研究院
Priority date: 2021-08-06
Filing date: 2022-01-06
Publication date: 2023-02-09
Also published as: CN113783675A; CN113783675B

Abstract

Disclosed in the present application is a control information transmission method, wherein feedback information is included in a target PUCCH of a second target time unit located in a second BWP, and the second target time unit overlaps with a first target time unit located in a first BWP; the feedback information comprises feedback for a first data set, the time difference between each first reference time unit of the first data set and a first target time unit is equal to the product of each parameter of a first parameter subset in a first parameter set and a first duration, and the first data set does not overlap with a second data set; and the time difference between each second reference time unit of the second data set and a second target time unit is equal to the product of each parameter in a second parameter set and a second duration. The present application further includes devices for implementing the method, and a system. By means of the present application, the problem that some PDSCHs to be fed back with HARQ-ACK information lose feedback due to the switching of a cell or BWP sending a PUCCH is thus solved.

Description

A control information transmission method and device

This application claims the priority of the Chinese patent application with the application number 202110904151.X and the title of the invention "a control information transmission method and device" submitted to the State Intellectual Property Office of China on August 06, 2021. The earlier application The entire contents are incorporated by reference in this application.

technical field

The present application relates to the technical field of mobile communication, and in particular to a method and device for transmitting control information.

Background technique

HARQ (Hybrid Automatic Repeat ReQuest, Hybrid Automatic Repeat Request) is a technology that combines FEC (Feed-forward Error Correction, feed-forward error correction) and ARQ (Automatic Repeat-ReQuest, automatic repeat request). Using this technology, the user terminal (UE) receives feedback acknowledgment (ACK) or non-acknowledgment (NACK) information for the downlink service data PDSCH, which can make the network equipment determine whether to reschedule the downlink service data or schedule new downlink service data to the user terminal . ACK and NACK information are collectively referred to as hybrid automatic repeat request acknowledgment (HARQ-ACK) information.

In the new air interface system, the configuration index u corresponding to the subcarriers of different cells may be different, corresponding to different configuration indexes μ, the number of time slots included in 1 subframe is different; and corresponding to the time slots included in different μ1 subframes The duration of the gap is also different. The μ of the PCell and the SCell in a cell group may be different, so when the SCell is used for downlink service data and the PCell is used for uplink feedback information, the time slots occupied by downlink service data and uplink feedback information are also different.

The HARQ-ACK codebook is the HARQ-ACK information sequence fed back on a PUCCH or PUSCH. Each bit corresponds to a transport block (TB), and each bit indicates whether the corresponding TB was received correctly. The NR system uses a semi-static HARQ-ACK codebook or a dynamic HARQ-ACK codebook.

When the semi-static HARQ-ACK codebook is used, the UE determines that each cell c corresponds to HARQ-ACK in the same time slot according to the HARQ-ACK feedback timing value K1, the semi-static slot structure, and the PDSCH candidate time domain resource allocation information. The set of time domain positions M _A,C where the PDSCH fed back by the ACK is located. Then according to M _A,C , map the PDSCH received in the PDSCH position set and the HARQ-ACK released by the SPS PDSCH to the corresponding position in the HARQ-ACK feedback sequence, thereby obtaining the HARQ-ACK code to be transmitted in slot n Book. Specifically, based on the HARQ-ACK feedback timing value configured by K1, the UE first determines the number of PDSCH time slots that require HARQ-ACK feedback in the same time slot of the cell, and secondly, determines the number of time slots that need to be fed back The maximum number of PDSCHs that can be transmitted in . When there is carrier aggregation, the PDSCH for each carrier in the HARQ-ACK codebook is determined according to the above process, and finally the HARQ-ACK information of each carrier is concatenated into a HARQ-ACK codebook. For the positions where no PDSCH is received in the PDSCH time domain position set _MA,C , the corresponding information in the HARQ-ACK codebook is NACK.

When a dynamic HARQ-ACK codebook is used, the HARQ-ACK codebook is generated based on the number of actually scheduled PDSCHs. The PDCCH listening opportunity set is determined according to the HARQ-ACK feedback timing value configured in K1 and the scheduling timing set of the PDSCH. Referring to 9.1 of 3GPP TS 38.213 V16.5.0, the PDSCH corresponding to each information of the HARQ-ACK codebook is determined according to the C-DAI and T-DAI in the PDCCH obtained from the PDCCH monitoring opportunity set.

Using the current technology, when the terminal device supports multiple uplink carriers (cells), the terminal device only sends PUCCH in the uplink primary cell (PCell, Primary Cell), which brings load between the PCell and the secondary cell (SCell, Secondary Cell) Unbalanced, and the delay of HARQ-ACK feedback is limited by the resource configuration on PCell. When there is no resource for PUCCH transmission on PCell, the feedback delay of HARQ-ACK will cause poor service delay characteristics. Allowing the cell in which the terminal equipment sends the PUCCH to switch between the PCell and each SCell can solve the problems of unbalanced load between the PCell and the SCell and poor HARQ-ACK feedback delay characteristics.

However, when the PUCCH is switched between uplink BWPs, the existing HARQ-ACK codebook determination method cannot meet the HARQ-ACK feedback requirements for downlink data transmission. and K1 configuration, when feedbacking PDSCH, because the time slot length of the cell or BWP before the handover is different from the K1 configuration, the corresponding PDSCH set is likely to be inconsistent with the PDSCH set to be fed back HARQ-ACK information before the handover, making the original cell or BWP Part of the PDSCH of the BWP to which the HARQ-ACK information is to be fed back loses feedback.

Contents of the invention

The present application proposes a method and device for transmitting control information to solve the problem of losing feedback of part of the PDSCH to be fed back HARQ-ACK information of the original cell or BWP caused by cell or BWP switching.

In the first aspect, the embodiment of the present application provides a method for transmitting control information, which is used under the condition of a BWP set, where the BWP set is composed of BWPs that support 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 the first duration, and the feedback timing value is the first parameter set; the duration of the time unit on the second BWP is the second duration, and the feedback timing value is the 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 the target PUCCH, the target PUCCH is located in a second target time unit of the second BWP, and the second target time unit overlaps with the first target time unit located in the first BWP;

The feedback information includes the feedback of the first data set, and 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 first parameter subset in the first parameter set The product of each parameter and the first duration;

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

Further, the feedback information also includes feedback of the third data set. 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.

Further, the feedback information includes feedback of the fourth data set. 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.

Preferably, the first parameter subset is a parameter indicated by first downlink control information, the first downlink control information is used to activate semi-persistent scheduling data, and the first downlink control information indicates the semi-persistent The feedback of 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 count downlink allocation indication and/or a total downlink allocation indication, and the second downlink control information Feedback indicating scheduled data is located at 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 count downlink allocation indication and/or a total downlink allocation indication, and the third downlink control information indicates Feedback of the scheduled data is located in the second target time unit.

Preferably, the combined counting of counting downlink allocation indications and/or total downlink allocation indications in the second downlink control information and the third downlink control information.

In any one embodiment of the first aspect of the present application, the feedback information is sent on a PUSCH time overlapping with the target PUCCH on the second BWP.

In any embodiment of the first aspect of the present application, dynamic indication information is used to indicate that the target PUCCH is located in the second target time unit, or semi-static indication information is used to indicate that the target PUCCH is located in the second target time unit.

Further, the method of the first aspect of the present application is used for terminal equipment, including the following steps:

The terminal device receives indication information, where the indication information is used to indicate to send the feedback information on the target PUCCH;

The terminal device determines the second data set according to the second parameter set, the second duration and the position of the second target time unit; according to the first parameter set, the first duration, the position of the first target time unit, and the second data set The position of the first data set is determined;

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

Further, the method of the first aspect of the present application is used for network equipment, including the following steps:

The network device sends indication information, where the indication information is used to indicate to send the feedback information on the target PUCCH;

The network device determines the second data set according to the second parameter set, the second duration, and the position of the second target time unit; according to the first parameter set, the first duration, the position of the first target time unit, and the second data set The position of the first data set is determined;

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

In the second aspect, the embodiments of the present application further provide a terminal device configured to implement the method described in any one of the embodiments of the first aspect of the present application. The terminal device is configured to receive indication information, the indication information is used to indicate that the feedback information is sent on the target PUCCH; determine the second data according to the position of the second parameter set, the second duration, and the second target time unit Set; determine 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; send the feedback information, including feedback on the first data set, and further , further comprising feedback on at least one of the second data set, the third data set, and the fourth data set.

In the third aspect, the embodiment of this application also provides a network device, which is used to implement the method described in any one of the embodiments of the first aspect of the application. The network device is configured to send indication information, the indication information is used to indicate to send the feedback information on the target PUCCH; determine the second data according to the position of the second parameter set, the second duration and the second target time unit Set; determine 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; receive the feedback information, identify the feedback to the first data set, and further , further comprising 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 also proposes a communication device, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, when the computer program is executed by the processor Implement the steps of the method described in any one of the embodiments of the present application.

In the fifth aspect, the present application also proposes a computer-readable medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method described in any one of the embodiments of the present application are implemented. .

In the sixth aspect, the present application also proposes a mobile communication system, including at least one network device as described in any embodiment of the present application and/or at least one terminal device as described in any embodiment of the present application .

The above at least one technical solution adopted in the embodiment of the present application can achieve the following beneficial effects:

This application solves the problem of how to determine the HARQ-ACK codebook in the target PUCCH when PUCCH is switched between uplink BWPs, so as to meet the HARQ-ACK feedback requirements of each downlink BWP data transmission, achieve load balancing between PCell and SCell and improve HARQ - Effect of ACK feedback latency performance.

Description of drawings

FIG. 1 is a schematic diagram of a time slot structure of a new air interface system;

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

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

FIG. 3 is a flow chart of an embodiment of the control information transmission method of the present application;

FIG. 4 is a schematic diagram of an embodiment in which the feedback information includes the PDSCH feedback of the first BWP semi-persistent scheduling when the BWP where the PUCCH is located is switched;

FIG. 5 is a schematic diagram of an embodiment in which the feedback information includes the first BWP dynamic scheduling PDSCH feedback when the BWP where the PUCCH is located is switched;

FIG. 6 is a flow chart of an embodiment of the 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 applied to 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 according to another embodiment of the present invention.

Detailed ways

By designing the determination method of the HARQ-ACK codebook in the target PUCCH, this application satisfies the HARQ-ACK feedback requirement of supporting the downlink data transmission when the PUCCH is switched between uplink BWPs, achieves load balancing of the PUCCH, and improves the time of HARQ-ACK feedback The effect of ductility.

The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

FIG. 1 is a schematic diagram of a time slot structure of a new air interface system.

In the figure, a subframe of a cell with μ=0 includes 10 time slots, and the length of each time slot is 1 ms; a subframe of a cell with μ=1 includes 20 time slots, and the length of each time slot is 0.5 ms. This is because, in the time slot 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 number μ, where μ=0 corresponds to a subcarrier spacing of 15KHz, and μ=1 corresponds to a subcarrier spacing of 30KHz. In the new air interface system, the length of a wireless frame is 10ms, including 10 subframes, so corresponding to different μ, the number of time slots included in a subframe is different, and corresponding to different μ, the time slots included in a subframe The time slots also vary in length.

In this application, the time slots used by each carrier to transmit PDSCH are collectively referred to as "time unit", and the duration of time units used by different cells can be different or the same.

The timing difference between the PDSCH and the corresponding HARQ-ACK information is not fixed, but indicated flexibly, which is called a "parameter" of the feedback timing value in this application.

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

For another example, Semi-Persistent Scheduling (SPS) allows PDSCH resources to be periodically allocated to a specific terminal device UE through one PDCCH scheduling. The UE receives the resource configured by the SPS, and activates the SPS configuration by obtaining the PDCCH sent by the network device. If the UE receives that the network device releases the SPS configuration parameters through the PDCCH, it stops 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 that activates the SPS, or by the high-level signaling K1.

Therefore, no matter under dynamic scheduling or semi-persistent scheduling conditions, there may be one or more parameters for feedback timing values, which may be called "parameter sets", for example, the first parameter set and the second parameter set in this application. In addition, in order to solve the problem, the "parameter subset" defined in this application is a subset of a specific "parameter set", for example, the first parameter subset and the third parameter subset are subsets of the first parameter set , the second parameter subset is a subset of the second parameter set.

In the prior art, the PUCCH of the terminal equipment is always transmitted on the PCell within the cell group. The time granularity of the HARQ-ACK timing relationship indicated by the network device to the terminal device is based on the time unit length of the Pcell. In the FDD system, the uplink and downlink carrier μ values can also be different. The following takes the time unit as an example of a time slot length. When the downlink service is fed back, the determination method of the HARQ-ACK feedback time unit in the uplink carrier is as follows:

In Figure 2(a)-(b), it is assumed that the OFDM parameter set on the uplink PCell is configured as μ _UL , and the length of a time slot is Slot _{μ_UL} ; the OFDM parameter set of the SCell where the PDSCH is located is configured as μ _DL , and the length of a time slot is It is Slot _{μ_DL} . The PDSCH is located in the downlink time slot n _D , and the HARQ-ACK feedback is located in the uplink time slot n _U . Define reference time slots n' _U located on the uplink PCell, and each reference time slot n' _U is aligned with the end time of one (or a minimum number of consecutive) downlink time slots n _D . The time difference between the PDSCH and the time unit where the corresponding HARQ-ACK is located satisfies the timing parameter K, which means that the time difference between the uplink reference time slot n' _U corresponding to the PDSCH and the time slot n _U where the HARQ-ACK is located is K Slot _{μ_UL} .

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

If Slot _{μ_UL} <Slot _{μ_DL} , there is only one corresponding downlink transmission time slot for X consecutive K1 values. in,

Here, the uplink reference time slot n′ _U corresponding to the PDSCH is the last uplink time slot overlapping in time with one downlink time slot n _D , that is, the end time of the uplink reference time slot and at least one downlink time slot of the PDSCH same.

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

If Slot _{μ_UL} >Slot _{μ_DL} , each K1 value corresponds to X downlink transmission time slots. n' _U is an uplink time slot that overlaps with downlink time slot n _D in time Here, the uplink reference time slot n' _U corresponding to PDSCH overlaps in time with a set of minimum number X consecutive downlink time slots n _D One uplink time slot, that is, at least one downlink time slot of the PDSCH is included in the period of the uplink reference time slot. In Fig. 2(b), X=2.

FIG. 3 is a flow chart of an embodiment of the control information transmission method of the present application.

The embodiment of the present application provides a control information transmission method, which is used under the condition of a BWP set. The BWP set is composed of multiple BWPs that support PUCCH transmission. In the following embodiments, the BWP set includes the first BWP and the second BWP. BWP; the duration of the time unit of the first BWP is the first duration, and the feedback timing value is the first parameter set; the duration of the time unit on the second BWP is the second duration, and the feedback timing value is the second parameter set . Include the following steps:

Step 101, determine the first time target unit located in the first BWP, the second target time unit located in the second BWP, the first target time unit and the second target time unit overlap, and the target PUCCH for sending feedback information is located in the second target time unit unit of time.

Preferably, step 101 is started using instruction information, wherein the instruction information is semi-static instruction information or dynamic instruction information.

Way 1: Indicate in the PDCCH that schedules the PDSCH which uplink cell/BWP the corresponding HARQ-ACK is sent on. Independent PUCCH resources can be configured for each uplink bandwidth part (BWP) of each cell. The PUCCH resource configuration includes the time difference option K1 between the time position of the PDSCH and its corresponding HARQ-ACK feedback time position, and K1 is based on each BWP is based on μ. The time unit where the target PUCCH is located is determined according to the K1 configuration of the uplink cell/BWP indicated by the PDCCH and the position of the PDSCH.

Mode 2: semi-statically preset the relationship between the cell for sending PUCCH and the time position, for example, preset using PCell to send PUCCH in the first time interval, use SCell to send PUCCH in the second time interval, . . . . A reference UL BWP is preset, and the time difference between the time units of PDSCH and HARQ-ACK is determined with the time difference option K1 of the PUCCH configuration on the BWP. The PUCCH where the HARQ-ACK feedback is determined according to the time difference is the "nominal PUCCH". After determining that the nominal PUCCH is located in the reference time unit, according to the time of the nominal PUCCH, the relationship between the semi-statically preset PUCCH transmitting cell and the time position, it is determined that the actually transmitted PUCCH is located in the switched BWP, which is the "target PUCCH".

For example, semi-statically presetting the cell and time position for sending the PUCCH includes, at the time position of the first target time unit, the cell for sending the PUCCH is located at the second target time unit of the second BWP.

For another example, the dynamically scheduled cell and the time position for sending the PUCCH are located in the second target time unit of the second BWP.

That is to say, in any embodiment of the first aspect of the present application, dynamic indication information is used to indicate that the target PUCCH is located in the second target time unit, or semi-static indication information is used to indicate that the target PUCCH is located in the second target time unit. unit of time.

Step 102. Determine the first data set and the second data set.

The first parameter set is not equal to the second parameter set, and/or, when 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 the second BWP, and the end time of each second reference time unit is the same as at least one time unit of the second data set, or the period of each second reference time unit Contains at least one time unit of the first data set

The "reference time unit" here refers to the reference time slot shown in Figure 2, the reference time unit defined in any carrier/BWP, used to determine whether the distance between it and the target time unit in the carrier/BWP complies with Feedback timing value within this carrier/BWP. For example, the reference time unit defined in the i-th carrier/BWP is the i-th reference time unit. Each i-th reference time unit is aligned with the end time of one or a group of j-th carrier/BWP time units. When the duration of the time unit in the j-th carrier/BWP is longer than the time unit in the i-th carrier/BWP, an i-th reference time unit is the last j-th time unit overlapping in time with the j-th carrier/BWP time unit The carrier/BWP time unit, that is, the i-th reference time unit is the same as the time unit end time of at least one j-th carrier/BWP. When the duration of the jth time unit is shorter than the ith time unit, the ith reference time unit corresponding to a specific jth carrier/BWP time unit is a set of minimum numbers with the specific jth carrier/BWP An i-th carrier/BWP time unit in which consecutive time units are aligned in time, that is, a time period of the i-th reference time unit includes at least one j-th carrier/BWP time unit.

When the solution of the present application is used for HARQ-ACK feedback of downlink service data by terminal equipment, further preferably, the first data set and the second data set include downlink service 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-persistently scheduled PDSCH set. Preferably, the first parameter subset is a parameter indicated by first downlink control information, the first downlink control information is used to activate semi-persistent scheduling data, and the first downlink control information indicates the semi-persistent The feedback of persistent scheduling data is located in the first target time unit. The first data set is a semi-persistently scheduled PDSCH set. The above is just an example, and does not exclude other dynamic scheduling or semi-persistent scheduling combinations. For example, the second data set is a dynamically scheduled PDSCH set or a semi-persistently scheduled PDSCH set. wait.

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, the above is just an example, and does not exclude other dynamic scheduling or semi-persistent scheduling combinations, and for example, the second data set is a dynamically scheduled PDSCH set or a semi-persistent scheduled PDSCH set, etc. .

It should be noted that the relationship between the first data set, the second data set and the first BWP and the second BWP is not limited here. For example, it may be: at least a part of the first data set is located in the first BWP, and/or at least a part of the first data set is located in 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 position of their respective reference time units, when the first data set is distributed in multiple BWPs, the time units of the data subsets of multiple BWPs overlap, and the second data set is also like this.

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

Step 103. Determine a third data set and/or a fourth data set that is a subset of the second data set.

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. Note that the second parameter subset is defined here, which can be a proper subset of the second parameter set, or the second parameter set 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 the third parameter subset is defined here, which can be the complement of the first parameter subset in the first parameter set.

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 those skilled in the art can understand that there is a fifth data set, and 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 time difference in the first parameter set The product of each parameter and the first 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 also be noted that in step 103, the range of data to be fed back can be further defined through the set second parameter subset and/or third parameter subset.

Step 104, determine 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 may further include feedback on the third data set and the fourth data set.

When the feedback information uses a HARQ-ACK codebook, a semi-static HARQ-ACK codebook or a dynamic HARQ-ACK codebook can be used. When the semi-static HARQ-ACK codebook is used, the HARQ-ACK information of each carrier is concatenated to form a HARQ-ACK codebook. For the time unit in which the PDSCH is not received in the time unit of the fed back data set, the HARQ-ACK codebook The corresponding information in is NACK. While using the dynamic HARQ-ACK codebook, the HARQ-ACH codebook is generated based on the number of actually scheduled PDSCHs. Further, the HARQ-ACK feedback information of SPS PDSCH is appended to the dynamic HARQ-ACK information generated based on C-DAI and T-DAI to form a dynamic HARQ-ACK codebook.

Preferably, the first data set is a data set determined according to the second downlink control information, and the second downlink control information includes count downlink allocation indication (C-DA1) and/or 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 combined counting of counting downlink allocation indications and/or total downlink allocation indications in the second downlink control information and the third downlink control information. It should be noted that in step 104, the ranges of the first data set and the fourth data set can be further determined through the second downlink control information and the third downlink control information. That is to say, when there is actually no PDSCH transmitted in each time unit in the first data set or the fourth data set, it can be indicated through the second downlink control information and the third downlink control information.

Therefore, a first data set that actually includes PDSCH can be determined through the second downlink control information, or, those skilled in the art can understand that when the first data set is determined through the first parameter subset, further, combined with the second The downlink control information can further determine an xth data set that actually includes the PDSCH. Through the third downlink control information, a third data set that actually includes PDSCH can be determined, or, those skilled in the art can understand that when the third data set is determined by the second parameter subset, further, combined with the third downlink control information, it is possible to further determine a y-th data set that actually includes the PDSCH.

Step 105, generate and transmit the HARQ-ACK codebook of the feedback information.

The feedback information is included in the target PUCCH, and the target PUCCH is located in the second target time unit of the second BWP.

The feedback information includes feedback on the first data set;

Further, the feedback information further includes feedback of the third data set, and/or, the feedback information includes feedback of the fourth data set.

As an optional embodiment in step 105, an indication of the BWP where the target PUCCH is located is included in the PDCCH that schedules the PDSCH, and the "target PUCCH" that carries the feedback information is located at the second target time of the second BWP (for example, located in the target cell, BWP) Unit; if not switched, the "nominal PUCCH" corresponding to the position of the second target time unit and located in the first target time unit of the first BWP should carry the feedback of the SPS PDSCH in the fifth data set, and the time unit where the nominal PUCCH is located It overlaps in time with the time unit where the target PUCCH is located. At this time, if the semi-static HARQ-ACK codebook method is used, the SPS PDSCH in the first data set corresponding to the nominal PUCCH of other uplink cells/BWPs is added to the PDSCH set corresponding to the semi-static HARQ-ACK codebook in the target PUCCH. As shown in FIG. 4 , the HARQ-ACK codebook sent by the target PUCCH of time slot n includes the HARQ-ACK feedback information of the PDSCH of the time slot where SPS0 is located in BWP1.

At this time, if the dynamic HARQ-ACK codebook method 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 nominal PUCCHs.

As another optional embodiment in step 105, the target PUCCH for sending the PUCCH is preset semi-statically in the UL BWP of the reference uplink carrier. The "target PUCCH" that actually carries the feedback information is located at the second target time unit of the second BWP (such as the target cell, BWP); if there is no handover, the position corresponding to the second target time unit position is located at the first target time of the first BWP The "nominal PUCCH" of the unit should carry the feedback of the PDSCH in the fifth data set. If the semi-static HARQ-ACK codebook method 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 PDSCHs corresponding to all nominal PUCCH semi-static HARQ-ACK codebooks. That is to say, the feedback of the PDSCH of the first data set in the nominal PUCCH should be included. For example, in FIG. 5 , the HARQ-ACK codebook sent by the target PUCCH of time slot n includes the HARQ-ACK feedback information of the PDSCH of the time slot D in BWP1.

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

The following will further illustrate 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, the first The meaning of the first to fifth data sets.

Fig. 4 is a schematic diagram of an embodiment of semi-persistent scheduling PDSCH feedback in which the target PUCCH retains the first BWP when there are multiple BWPs that support PUCCH transmission.

When the network device activates the SPS configuration, a specific uplink cell/BWP is used as the feedback cell/BWP (for example, BWP1) corresponding to the HARQ-ACK of the SPS PDSCH. The "PDSCH-to-HARQ-timing-indicator" field in the PDCCH that activates the SPS configuration indicates the time difference between the SPS PDSCH and the time slot m where the "nominal PUCCH" is located (ie, the first time unit of the first BWP). However, since the PUCCH is switched to another BWP, it is possible that the "target PUCCH" actually transmitted within the time slot m of the "nominal PUCCH" is located in the time slot n of BWP2 (ie, the second target time unit of the second BWP). According to the method of determining the semi-static HARQ-ACK codebook in the prior art, if the OFDM parameter configuration set index numbers μ of BWP1 and BWP2 are different, and/or, the timing parameter sets of PUCCH configured on BWP1 and BWP2 are different, it may cause some SPS PDSCH The HARQ-ACK information cannot be fed back in the PUCCH located in the second target time unit, which eventually leads to the failure of the HARQ-ACK transmission of the SPS PDSCH, affecting the performance and system efficiency of HARQ transmission.

Take the OFDM parameter configuration set index μ of BWP1 and BWP2 as an example: Assume that UL Cell-1 is currently activating BWP1, the OFDM parameter configuration set index number of BWP1 μ _{BWP 1} =1, and the PUCCH configuration on BWP1 is K1 _{BWP 1} ={ 2,3,4,5}. UL Cell-2 currently activates BWP2, and the OFDM parameter configuration set index number of BWP2 is μ _{BWP 2} =0. K1 _{BWP 2} ={2,3,4,5} in the PUCCH configuration on WP2. If the PDCCH for activating SPS indicates that SPS PDSCH and HARQ-ACK feedback are located in BWP1, and the time unit time difference between SPS PDSCH and HARQ-ACK is 2, then the HARQ-ACK corresponding to SPSOPDSCH in Figure 4 is located in time slot m of BWP1. However, at the time of slot m, the PUCCH is located in slot n of BWP2. According to the existing technology, the PDSCH time domain position set corresponding to the semi-static HARQ-ACK codebook on time slot n of BWP2 includes the PDSCH of time slot A to time slot H in BWP1, and the PDSCH of time slot I to time slot L in BWP2 , but does not include the PDSCH of the time slot where SPS0 is located in BWP1. In this way, the requirement of HARQ-ACK feedback corresponding to the SPS PDSCH cannot be met.

For this reason, according to the embodiment of the first aspect of the present application, the first BWP is defined as BWP1, and the second BWP is BWP2; the first target time unit is time slot m, and the second target time unit is time slot n; define the first data The set includes the PDSCH located in the time unit SPSO; the fifth data set includes the PDSCH located in the time units F, G, H, and SPSO; the second data set includes the PDSCH located in the time units A, B, C, D, E, F, PDSCH of G, H, I, J, K, L; the third data set and the fourth data set are both subsets of the second data set, and the time unit of the fourth data set is the time unit of the fifth data set The first reference time unit is defined in BWP1, and the second reference time unit is defined in BWP2; the first reference time unit of the first data set 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, are subsets of I, J, K, and L, and the first reference time unit of the fourth data set is a subset of F, G, and H. Among them, BWP2 time unit I overlaps with a group of BWP1 time units A and B, BWP2 time unit J overlaps with a group of BWP1 time units C and D, and BWP2 time unit K overlaps with a group of BWP1 time units E and F. The BWP2 time unit L temporally overlaps with a set of BWP1 time units G, H. The first set of constants is K1 _{BWP 1} ={5, 4, 3, 2}, and the second set of parameters is K1 _{BWP 2} ={5, 4, 3, 2}.

According to the method in steps 102-103, 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. The positions between each time unit 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, SPS0 of the fifth data set and the first target time unit time slot m in turn is equal to each parameter {5, 4, 3 of the first parameter set , 2} in turn multiplied by the first duration; since the fifth data set in this embodiment is only in BWP1, each time unit of the fifth data set is F, G, H, and SPS0.

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 in turn is equal to each parameter {5, 4, 3 of the second parameter set , 2} are sequentially multiplied by the second duration; 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 time slot m is equal to the product of parameter {2} of the first parameter subset in the first parameter set and the first duration. The time unit of the first data set is SPSO.

In the target PUCCH of slot n, feedback for 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. When the time unit of the third data set is indicated by the downlink control signaling including the second parameter subset, the range of the third data set can be determined. For example, the second parameter subset is {2,3}, the second reference time unit of the third data set is K, L, and the time units of the third data set include 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 the 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, it can be determined that the first data set that does not overlap with the second data set The time unit range of the data collection, which is SPS0.

Intersections F, G, and H exist in each time unit of the second data set and the fifth data set, so the HARQ-ACK feedback for the PDSCH of time units F, G, and H in the second target time unit only needs to occur once. When the third parameter subset is defined as {3,4,5}, each first reference time unit of the fourth data set is F, G, H, and the time units of the fourth data set are also F, G , H.

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

When the feedback information uses a semi-static HARQ-ACK codebook, the feedback of the first data set and the third data set should be concatenated according to BWP1 and BWP2 to generate a HARQ-ACK codebook. It should also be noted that when the third data set is indicated by the downlink control signaling including the dynamic codebook indication, the format and content of the codebook in the target PUCCH can be further determined.

In this embodiment, when the PUCCH is supported to be switched between multiple BWPs, the HARQ-ACK feedback of the PDSCH in the time unit SPSO is guaranteed.

Fig. 5 is a schematic diagram of an embodiment of retaining dynamic PDSCH scheduling feedback of the first BWP when there are multiple BWPs that support PUCCH transmission.

When semi-statically preset the relationship between the cell for sending PUCCH and the time position, the time domain position set of the PDSCH of the HARQ-ACK codebook on the "target PUCCH" determined according to the existing technology may not include part of the "nominal PUCCH" The time domain position of the PDSCH corresponding to the HARQ-ACK codebook. Suppose UL Cell-1 is currently activating BWP1, the OFDM parameter configuration set index number of BWP1 μ _BWP1 = 1, K1 _{BWP 1} = {2,3,4,5} in the PUCCH configuration on BWP1, UL Cell-2 is currently activating BWP2, The OFDM parameter configuration set index number of BWP2 is μ _BWP2 =0, and K1 _{BWP 2} ={2,3,4,5} in the PUCCH configuration on BWP2. If the PUCCH time difference option K1 of BWP1, the time difference between the time slots of PDSCH and HARQ-ACK, and the time slot length corresponding to the OFDM parameter configuration set index number μ ₁ of BWP1 are used to determine that the "nominal PUCCH" is in the time slot m of BWP1 , the PDSCH time-domain position set corresponding to the HARQ-ACK codebook on the "nominal PUCCH" includes the PDSCHs of time slots A, B, C, and D in BWP1 and time slots L and M in BWP2. According to the preset relationship between the cell sending the PUCCH and the time position, it is determined that the target PUCCH is located in the time slot n of the BWP2. For the target PUCCH of BWP2 time slot n, the time slot length corresponding to the OFDM parameter configuration set index μ ₂ of BWP2 is used to determine that the HARQ-ACK codebook includes time slots A, B, C, E, F, G, H, PDSCH of I, PDSCH of time slots J, K, L, and M in BWP2. Since the HARQ-ACK codebook of the target PUCCH does not include the PDSCH of time slot D in BWP1, HARQ-ACK cannot be fed back to the PDSCH scheduled for time slot D in BWP1, resulting in data scheduling restrictions and affecting system efficiency.

For this reason, according to the embodiment of the first aspect of the present application, the first BWP is defined as BWP1, and the second BWP is BWP2; the first target time unit is time slot m, and the second target time unit is time slot n; define the first data The set includes the PDSCH located in time unit D, the fifth data set includes the PDSCH located in time units A, B, C, and D; the second data set includes the PDSCH located in time units J, K, L, M, E, F, PDSCH of G, H, I, A, B, C; the third data set and the fourth data set are both subsets of the second data set, and the time unit of the fourth data set is the time unit of the fifth data set Subset; the first reference time unit is defined in BWP1, and the second reference time unit is defined in 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; the second reference time unit of the third data set is a subset of J, K, L, M; the time unit of the fifth data set is determined according to the first parameter set and the first target time unit, and is A, B, C, D; 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 also includes L, M. The first reference time unit of the fourth data set is a subset of A, B, and C. BWP2 time unit J overlaps with a group of BWP1 time units E and F, BWP2 time unit K overlaps with a group of BWP1 time units G and H, BWP2 time unit L overlaps with a group of BWP1 time units I and A, and BWP2 time Unit M is time-overlapped with a set of BWP1 time units B, C. The first timing parameter set is K1 _{BWP 1} ={5, 4, 3, 2}, and the second timing parameter set is K1 _{BWP 2} ={5, 4, 3, 2}.

According to the method in steps 102-103, 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. The positions between each time unit 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 time target unit satisfy The following characteristics:

The time difference between each first reference time unit A, B, C, D of the fifth data set and the first target time unit time slot m in turn is equal to each parameter {5, 4, 3, 2} are multiplied by the first duration in turn, especially, the end time of time unit D is inconsistent with the end time of time unit BWP2, so time unit D cannot be used as BWP2 although it satisfies the data 2 in the first parameter set The first reference time unit of the above data, so take A, B, and C as the first reference time unit to further determine that the time unit of the fifth data set also 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 in turn is equal to each parameter {5, 4, 3, 2} are sequentially multiplied by the second duration; each time unit of the second data set includes A, B, C, E, F, G, H, I, J, K, L, M.

The time difference between the first reference time unit D of the first data set and the time slot m of the first target time unit is equal to the product of the first parameter subset {2} of the first parameter set and the first duration; the 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. When the time unit of the third data set is indicated by the downlink control signaling including the second parameter subset, the range of the third data set can be determined. For example, the second parameter subset is {2,3}, the second reference time unit of the third data set is M, L, and the time units of the third data set include 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 the 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, it can be determined that the first data set that does not overlap with the second data set The time unit range of the dataset is D.

The time units of the second data set and the fifth data set have intersections A, B, and C, so in the second target time unit, the HARQ-ACK feedback of the PDSCH in the time units A, B, and C only needs to appear once . When the third parameter subset is defined as {3,4,5}, each first reference time unit of the fourth data set is A, B, C, and the time units of the fourth data set are also A, B , C.

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

In this embodiment, the PUCCH also realizes the HARQ-ACK feedback of the PDSCH in the time unit D after the BWP switching.

In this embodiment, if the relationship between the cell sending the PUCCH and the time position is preset semi-statically, a reference UL BWP is preset, and the time difference option K1 of the PUCCH configuration on the BWP is used to determine the PDSCH and HARQ-ACK The time difference between time units. The PUCCH where the HARQ-ACK feedback is determined according to the time difference is the "nominal PUCCH". After determining that the nominal PUCCH is located in the reference time unit, according to the time of the nominal PUCCH, the relationship between the semi-statically preset PUCCH transmitting cell and the time position, it is determined that the actually transmitted PUCCH is located in the switched BWP, which is the "target PUCCH". The data set corresponding to the feedback information in the "target PUCCH" is determined by the parameter set and time unit length configured on the BWP where the "nominal PUCCH" is located, not by the parameter set and time unit length configured on the BWP where the "target PUCCH" is located , it can ensure that the HARQ-ACK feedback information corresponding to the downlink data transmission can 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 flow chart of an embodiment of the method of the present invention applied to a terminal device.

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

Step 201, the terminal device acquires indication information, which is used to indicate to send the feedback information on the target PUCCH;

For example, switching the time unit for transmitting the feedback information from the first target time unit located in the first BWP to the second target time unit located in the second BWP;

Or, indicate that the time unit for transmitting the feedback information is the second target time unit of the second BWP.

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

The terminal device receives an indication of activating the first parameter set and the second parameter set through downlink control signaling;

Further, the downlink control signaling received by the terminal device includes first downlink control information, which is used to identify 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, which is used to indicate that a dynamic HARQ-ACK is generated for the first data set and/or the third data set codebook.

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

First parameter set, second parameter set, first duration, second duration, first target time unit, second target time unit, first reference time unit, second reference time unit, first data set, second data See steps 101-105 for the definition and interrelationships of the sets, which will not be repeated here.

The terminal device determines the second data set according to the second parameter set, the second duration and the position of the second target time unit; according to the first parameter set, the first duration, the position of the first target time unit, and the second data set The position of the first data set is determined.

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

Determine the nominal PUCCH, the nominal PUCCH is located in the first BWP, the time unit length of the first BWP is S ₁ , the set of PUCCH timing feedback parameters configured by the first BWP is the first parameter set; determine the target PUCCH, the The target PUCCH is located in the second BWP, the time unit length of the second BWP is S ₂ , and the set of PUCCH timing feedback parameters configured by the second BWP is the second parameter set; wherein S ₁ ≠ S ₂ , and/or , the first timing parameter set≠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 the HARQ-ACK in the nominal PUCCH and the corresponding PDSCH is determined by S ₁ and the first parameter set. On the second BWP, the time difference between the HARQ-ACK in the target PUCCH and its corresponding PDSCH is determined by S ₂ and the second parameter set. The method for the UE to determine the target PUCCH and the nominal PUCCH includes any of the following two methods:

method one:

The uplink cell/BWP in which the corresponding HARQ-ACK is sent is indicated in the PDCCH that schedules the PDSCH, for example, the second BWP is designated. For each BWP, an independent PUCCH resource is configured for the UE, and each PUCCH time difference option set takes the time unit corresponding to each μ as the granularity. The time unit where the target PUCCH is located can be determined according to the timing parameter indication of the PDCCH, the PUCCH timing difference set of the second BWP, that is, the second parameter set, the time unit length of the second BWP, and the position of the PDSCH.

The time units of the nominal PUCCH and the target PUCCH overlap in time, and are located in the first BWP, and the PUCCH timing difference set configured in the first BWP is the first parameter set.

Method 2:

The relationship between the cell for sending PUCCH and the time position is preset semi-statically, for example, PCell is used to send PUCCH in the first time interval, SCell is used to send PUCCH in the second time interval, . . . . A reference UL BWP is preset, which is recorded as the first BWP. The time unit where the nominal PUCCH is located can be determined according to the timing difference indication of the PDCCH, the PUCCH time difference candidate set (first parameter set) of the first BWP, the time unit length of the first BWP and the position of the PDSCH. The target PUCCH is determined according to the time at which the nominal PUCCH is located, the semi-static preset cell for sending the PUCCH, and the time position.

According to the embodiment shown in FIG. 4 , the SPS activation process indicates that the HARQ-ACK corresponding to the SPS transmission is located in the first BWP. The SPS transmission includes any of the SPS PDSCH and the PDCCH used to release the SPS. According to the prior art, the first parameter set represents alternatives for the time difference between the time position of the SPS PDSCH and its corresponding HARQ-ACK feedback time position, and the time unit of these alternatives is 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 determined by the second parameter set, S ₂ and the time unit where the target PUCCH is located. 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 determined by the first parameter set, S ₁ and the time unit where the nominal PUCCH is located. Therefore, S ₁ ≠ S ₂ , and/or the difference between the first parameter set and the second parameter set may cause the target HARQ-ACK codebook not to include a part of the PDSCH that should be fed back by the nominal HARQ-ACK codebook.

According to the embodiment shown in Figure 5, the PDSCH to be fed back determined according to the second parameter set, S ₂ and the time unit of the target PUCCH may not include the PDSCH to be fed back determined according to the first parameter set, S ₁ and the time unit of the nominal PUCCH. PDSCH.

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

Sending the target HARQ-ACK codebook, including feedback on the first data set.

Further, the target HARQ-ACK codebook further includes feedback to 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, realizes PUCCH channel switching between uplink BWPs, satisfies HARQ-ACK feedback requirements for each downlink BWP data transmission, achieves load balancing between PCell and SCell, and Improve HARQ-ACK feedback delay characteristics.

The target PUCCH includes a target HARQ-ACK codebook, and the target HARQ-ACK codebook includes HARQ-ACK information of the first PDSCH set, and the first PDSCH set satisfies the first parameter subset by the time difference between the first PDSCH set and the nominal PUCCH composed of PDSCHs, the first parameter subset is a subset of the first parameter set.

The target HARQ-ACK codebook in the target PUCCH includes the HARQ-ACK information on the nominal PUCCH, which can meet the requirement of switching the PUCCH from the nominal PUCCH to the target PUCCH, and avoid the restriction of HARQ feedback by PUCCH switching between BWPs. The target HARQ-ACK codebook includes the HARQ-ACK information of the 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 determined by S ₁ and the first subset of timing parameters, the first PDSCH set is used for SPS transmission.

Using the 204-1 scheme, corresponding to the nominal PUCCH, the first PDSCH set determined by the first parameter set, S ₁ and the first parameter subset indicated in the SPS activation process, the feedback information is included in the target HARQ-ACK codebook in the middle.

If the target HARQ-ACK codebook adopts a semi-static HARQ-ACK codebook, the HARQ-ACK information to be fed back to the PDSCH in each downlink BWP is sequentially arranged in the HARQ-ACK codebook. The PDSCH to be fed back on the downlink BWP corresponding to the first BWP includes two types: one is the second PDSCH set determined by the second timing parameter set, S ₂ and the time unit where the target PUCCH is located, and the other is the second PDSCH set determined by the first parameter Subset, S ₁ and the first PDSCH set determined by the time unit where the nominal PUCCH is located. Optionally, the HARQ-ACK information about the PDSCH to be fed back of the downlink BWP corresponding to the first BWP is sorted according to the time sequence of the PDSCH in the target HARQ-ACK codebook. Or optionally, in the target HARQ-ACK, the HARQ-ACK information of the second PDSCH set determined by the second parameter set, S ₂ and the time unit where the target PUCCH is located is ranked by the first parameter subset, S ₁ and the nominal The time unit where the PUCCH is located is in front of the first PDSCH set determined. 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 for the first data set and the feedback for the The feedback of the fourth data set occupies different information identification areas in the target feedback information.

If the target HARQ-ACK codebook adopts a dynamic HARQ-ACK codebook, obtain the C-DAI and T-DAI in the PDCCH according to the PDCCH monitoring opportunity set, and determine the PDSCH corresponding to each information of the HARQ-ACK codebook. On this basis, HARQ-ACK information of the first PDSCH set determined by the first parameter subset, S ₁ and the time unit where the nominal PUCCH is located is added to the HARQ-ACK codebook. The data set of the additional HARQ-ACK information corresponds to the C-DAI and T-DAI in the PDCCH, and the data set of the previous HARQ-ACK information corresponds to the C-DAI and T-DAI in the PDCCH, which are jointly counted together.

Optionally, the target PUCCH further includes temporary uplink control information, the temporary uplink control information is located in the nominal PUCCH, and the temporary uplink control information is determined by _S1 at the time position of the first BWP. If the nominal PUCCH also includes uplink control information such as CSI and SR, while discarding the nominal PUCCH, these uplink control information can be carried in the target PUCCH. The uplink control information configured by the network device is located in the first BWP, and its sending cycle or sending time It is determined by the time unit length _S1 of the first BWP. According to the prior art, resources for transmission of the uplink control information are not configured on the second BWP, and discarding the nominal PUCCH means discarding the uplink control information. Carrying these information in the target PUCCH can improve transmission efficiency of control information and improve system performance.

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

In the embodiment shown in Figure 5, the PDSCH to be fed back determined according to the second parameter set, S ₂ and the time unit of the target PUCCH may not include the PDSCH determined according to the first parameter subset, S ₁ and the time unit of the nominal PUCCH. The first PDSCH set. Using the scheme of step 304-2, when determining the target HARQ-ACK codebook, the standby PDSCH determined not by the second parameter set, S ₂ and the time unit where the target PUCCH is located, but by the first parameter set, S ₁ and the nominal The PDSCH to be fed back determined by the time unit where the PUCCH is located.

It should be noted that in this application, if multiple nominal PUCCHs and target PUCCHs overlap in time, then the relationship between the HARQ-ACK codebook in the target PUCCH and the HARQ-ACK information on each nominal PUCCH satisfies the requirements of this application. implementation. If multiple channels and the nominal PUCCH overlap in time, then when any one of the multiple channels is used as the target PUCCH, the relationship between the HARQ-ACK codebook and the HARQ-ACK information on the nominal PUCCH satisfies the embodiments described in this application.

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

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

Step 301. The network device sends indication information, which is used to instruct to send the feedback information on the target PUCCH.

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

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

The network device sends an instruction to activate the first parameter set and the second parameter set through downlink control signaling;

Further, the downlink control signaling includes first downlink control information, which is used to identify 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 location of the first data set and the second data set.

The network device determines the second data set according to the second parameter set, the second duration, and the position of the second target time unit; according to the first parameter set, the first duration, the position of the first target time unit, and the second data set The position of the first data set is determined.

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

After receiving the target HARQ-ACK codebook, the network device further acquires feedback on at least one of the second data set, the third data set, and the fourth data set.

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

The embodiment of the present application also proposes a network device, using the method in any one of the embodiments of the present application, the network device is configured to send the indication information for instructing to send the feedback information on the target PUCCH. determining a first target time unit located at the first BWP and a second target time unit located at the second BWP;

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

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

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

The network sending module is used to send indication information, and is further used to send 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; the 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 determination module is used to determine the position and content of the first data set and the second data set, and is also used to determine the position of at least one of the third data set and the fourth data set, and the network determination module is also used The first downlink control information is determined according to the first parameter subset; the second downlink control information is determined according to the first data set, and the third downlink control information is determined according to the third data set.

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

The specific methods for implementing the functions of the network sending module, the network determining module, and the network receiving module are as described in the method embodiments of the present application, and will not be repeated here.

The network device described in this application may be a base station device or a network-side processing device connected to the base station.

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

The present application also proposes a terminal device, using the method in any one of the embodiments of the present application, the terminal device is configured to: receive the indication information for instructing to send the feedback information on the target PUCCH. Determining the first target time unit located in the first BWP and the second target time unit located in the second BWP; also used for receiving the first parameter set and the second parameter set; and also used for receiving downlink service data.

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

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

In order to implement the above technical solution, a terminal device 500 proposed in this 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 is 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, the The terminal receiving module is further configured to receive the first downlink control information, the second downlink control information, and the third downlink control information.

The terminal determination module is used to determine the position and content of the first data set and the second data set, and is also used to determine the position of at least one of the third data set and the fourth data set; the terminal determination module is based on the first The downlink control information determines the first parameter subset; according to the second downlink control information, determines the dynamic HARQ-ACK codebook for the first data feedback; and determines the dynamic HARQ-ACK codebook for the third data feedback according to the third downlink control information. ACK codebook.

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

The terminal equipment mentioned in this application may refer to mobile terminal equipment.

Fig. 10 shows a schematic structural diagram of a network device according to another embodiment of the present invention. As shown in the figure, a 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, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium. The wireless interface realizes the communication function with the terminal equipment, processes wireless signals through the receiving and transmitting means, and the data carried by the signals communicates with the memory or the processor through the internal bus structure. The memory 603 contains a computer program for executing any one of the embodiments of the present application, and the computer program runs or changes 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 will not be repeated here.

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

Memory 702 stores executable modules or data structures. An operating system and application programs can be stored in the memory. Among them, the operating system includes various system programs, such as framework layer, core library layer, driver layer, etc., for realizing various basic services and processing tasks based on hardware. The application program includes various application programs, such as a media player, a browser, etc., and is used to implement various application services.

In the embodiment of the present invention, the memory 702 includes a computer program for executing any embodiment of the present application, and the computer program is run or changed on the processor 701 .

The memory 702 includes a computer-readable storage medium, and the processor 701 reads the information in the memory 702 and completes the steps of the above method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 701, each step of the method embodiment as described in any one of the foregoing embodiments is implemented.

The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the method of the present application may be completed by an integrated logic circuit of hardware in the processor 701 or 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, a discrete gate or transistor logic device, or a discrete hardware component. Various methods, steps and logic block diagrams disclosed in the embodiments of the present invention may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, and the like. The steps of the methods disclosed in 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.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. In a typical configuration, a device of the present application includes one or more processors (CPUs), input/output user interfaces, network interfaces and 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, etc.) having computer-usable program code embodied therein.

Therefore, the present application also proposes a computer-readable medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method described in any one embodiment of the present application are implemented. For example, the

memory

603, 702 of the present invention may include non-permanent memory in a computer-readable medium, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory ( flash RAM).

Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can be implemented by any method or technology for storage of information. 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 Disc (DVD) or other optical storage, Magnetic tape cartridge, tape magnetic disk storage or other magnetic storage device or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media excludes transitory computer-readable media, such as modulated data signals and carrier waves.

Based on the embodiments in Figures 8-11, this application also proposes a mobile communication system, including at least one embodiment of any terminal device in this application and/or at least one embodiment of any network device in this application.

It should also be noted that the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes Other elements not expressly listed, or elements inherent in the process, method, commodity, or apparatus are also included. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

It should also be noted that the terms "first", "second", "third", "fourth", and "fifth" in this application are for distinguishing multiple objects with the same name, not for directly expressing the order Or size, unless specified, has no other special meaning.

The above descriptions are only examples of the present application, and are not intended to limit the present application. For those skilled in the art, various modifications and changes may occur in this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

A method for transmitting control information, which is used under the condition of a BWP set, the BWP set is composed of BWPs that support 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 The first duration and the feedback timing value are the first parameter set, the duration of the time unit on the second BWP is the second duration, and the feedback timing value is the second parameter set; it is characterized in that,

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 the target PUCCH, the target PUCCH is located in a second target time unit of the second BWP, and the second target time unit overlaps with the first target time unit located in the first BWP;

The feedback information includes the feedback of the first data set, and 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 first parameter subset in the first parameter set the product of each parameter and the first duration;

The first reference time unit is a time unit of the first BWP, and the end 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 at least one time unit containing 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 the second BWP, and the end time of each second reference time unit is the same as at least one time unit of the second data set, or the period of each second reference time unit Contains at least one time unit of the first data set.
The method for transmitting control information according to claim 1, wherein:

The feedback information also includes feedback of the third data set;

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.
The method for transmitting control information according to claim 1, wherein:

The feedback information includes the feedback of the fourth data set, and the time difference between each first reference time unit of the fourth data set and the first target time unit is respectively equal to each of the third parameter subsets in the first parameter set. the product of the parameter and the first duration;

The first set of parameters includes the first subset of parameters and the third subset of parameters.
The method for transmitting control information according to claim 1, wherein:

The first parameter subset is a parameter indicated by first downlink control information, the first downlink control information is used to activate semi-persistent scheduling data, and the first downlink control information indicates the semi-persistent scheduling data The feedback is located in the first target time unit.
The method for transmitting control information according to claim 1, wherein:

The first data set is a data set determined according to the second downlink control information, the second downlink control information includes a count downlink allocation indication and/or a total downlink allocation indication, and the second downlink control information indicates the scheduled The data feedback is located in the first target time unit.
The method for transmitting control information according to claim 2, wherein:

The third data set is a data set indicated by third downlink control information, the third downlink control information includes a count downlink allocation indication and/or a total downlink allocation indication, and the third downlink control information indicates the scheduled data The feedback is located in the second target time unit.
The method for transmitting control information according to claim 6, wherein:

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

The second downlink control information and the third downlink control information count the downlink allocation indication and/or the joint counting of the total downlink allocation indication.
The method for transmitting control information according to claim 1, wherein:

The feedback information is sent or received on the PUSCH on the second BWP that overlaps with the target PUCCH in time.
The method for transmitting control information according to claim 1, wherein:

Use dynamic indication information to indicate that the target PUCCH is located in the second target time unit, or use semi-static indication information to indicate that the target PUCCH is located in the second target time unit.
The control information transmission method according to any one of claims 1-9, which is used for terminal equipment, is characterized in that it comprises the following steps:

The terminal device acquires indication information, which is used to indicate to send feedback information on the target PUCCH;

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

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;

Sending the feedback information includes feedback on the first data set.
The method for transmitting control information according to any one of claims 1 to 9, used for network equipment, characterized in that,

The network device sends indication information for instructing to send the feedback information on the target PUCCH;

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

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;

The feedback information is received, and feedback to the first data set is identified.
A terminal device, configured to implement the method according to any one of claims 1 to 10, characterized in that the terminal device is configured to: receive indication information for instructing to send the feedback information on the target PUCCH; Determine the second data set according to the second parameter set, the second duration and the position of the second target time unit; determine the second 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 A data set; sending the feedback information, including feedback on the first data set.
A network device, configured to implement the method described in any one of claims 1-9,, 1, characterized in that the network device is configured to send indication information for instructing to send the feedback on the target PUCCH information; determine the second data set according to the second parameter set, the second duration and the position of the second target time unit; 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, Determining a first data set; receiving the feedback information and identifying feedback to the first data set.
A communication device, characterized by comprising: a memory, a processor, and a computer program stored on the memory and operable on the processor, when the computer program is executed by the processor, the claimed The steps of any one of the methods described in 1-11.
A computer-readable medium, storing a computer program on the computer-readable medium, and implementing the steps of the method according to any one of claims 1-11 when the computer program is executed by a processor.
A mobile communication system, comprising at least one terminal device as claimed in claim 12 and/or at least one network device as claimed in claim 13.