WO2023202520A1

WO2023202520A1 - Harq-ack codebook feedback method and apparatus, and terminal and readable storage medium

Info

Publication number: WO2023202520A1
Application number: PCT/CN2023/088640
Authority: WO
Inventors: 李�灿; 李�根
Original assignee: 维沃移动通信有限公司
Priority date: 2022-04-21
Filing date: 2023-04-17
Publication date: 2023-10-26
Also published as: CN116996178A

Abstract

The present application belongs to the technical field of communications. Disclosed are an HARQ-ACK codebook feedback method and apparatus, and a terminal and a readable storage medium. The HARQ-ACK codebook feedback method in the embodiments of the present application comprises: a terminal determining, on the basis of a slot timing set corresponding to an HARQ-ACK feedback slot unit, a candidate physical downlink shared channel (PDSCH) reception occasion set of a target cell, wherein the target cell may be any one of at least two cells scheduled by target downlink control information (DCI), and each cell at least comprises a PDSCH; and the terminal determining an HARQ-ACK codebook for the target cell on the basis of the candidate PDSCH reception occasion set.

Description

HARQ ACK codebook feedback method, device, terminal and readable storage medium

Cross-references to related applications

This application claims the priority of the Chinese patent application with application number 202210425850.0 submitted on April 21, 2022, and the invention name is "HARQ ACK codebook feedback method, device, terminal and readable storage medium", which is all by reference incorporated into this application.

Technical field

This application belongs to the field of communication technology, and specifically relates to a HARQ ACK codebook feedback method, device, terminal and readable storage medium.

Background technique

In the communication network, when the network side device schedules the physical downlink shared channel (PDSCH) of a cell (cell) through a downlink control information (DCI), the terminal is in a hybrid The HARQ-ACK information corresponding to the PDSCH is fed back on the Hybrid Automatic Repeat Request (HARQ) feedback resource. In practice, feedback resources include physical uplink control channel (Physical Uplink Control Channel, PUCCH) or physical uplink shared channel (Physical uplink shared channel, PUSCH).

The time slot/sub-slot offset value between PDSCH and its corresponding feedback resource (PUCCH/PUSCH) is called timing parameter K1. Usually, the network side device specifies or predefines a set of possible values through Radio Resource Control (RRC), and then the network side device indicates a value (ie, K1) through the information field of the DCI corresponding to the PDSCH. In the related art, the terminal infers candidate downlink (DL) time slots based on the time slot sequence set configured in the uplink part broadband (Bandwidth Part, BWP) where the PUCCH is located, and obtains candidate PDSCH reception based on the candidate downlink time slots. Time to gather.

In the case where DCI schedules PDSCH of multiple cells, since the DL BWP of different cells may be different, the PDSCH time domain resource allocation (Time Domain Resource Allocation, TDRA) tables corresponding to different cells may also be different, and there is no guarantee that the PDSCH scheduled by DCI will be the same. There may be a corresponding PUCCH for HARQ ACK codebook feedback, resulting in the terminal side being unable to feedback all HARQ ACK codebooks. Therefore, how to expand the time slot sequence set is an issue that needs to be solved urgently.

Contents of the invention

Embodiments of the present application provide a HARQ ACK codebook feedback method, device, terminal and readable storage medium, which can solve the problem that the terminal side cannot feedback all HARQ ACK codebooks.

In the first aspect, a HARQ ACK codebook feedback method is provided, which includes:

The terminal determines the set of candidate physical downlink shared channel PDSCH reception opportunities of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit; wherein the target cell includes at least two cells scheduled by the target downlink control information DCI Any one of them, each cell includes at least one PDSCH;

The terminal determines the HARQ ACK codebook of the target cell based on the set of candidate PDSCH reception opportunities.

In the second aspect, a HARQ ACK codebook feedback device is provided, which includes:

The first determination module is used to determine the set of candidate physical downlink shared channel PDSCH reception opportunities of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit; wherein the target cell includes target downlink control information DCI scheduling Any one of at least two cells, each cell including at least one PDSCH;

The second determination module is configured to determine the HARQ ACK codebook of the target cell based on the set of candidate PDSCH reception opportunities.

In a third aspect, a terminal is provided. The terminal includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.

In a fourth aspect, a terminal is provided, including a processor and a communication interface; wherein the processor is configured to: determine a candidate physical downlink shared channel of the target cell based on a time slot sequence set corresponding to the HARQ ACK feedback time slot unit. A set of PDSCH reception opportunities; wherein the target cell includes any one of at least two cells scheduled by the target downlink control information DCI, and each cell includes at least one PDSCH; based on the set of candidate PDSCH reception opportunities, determine the target The HARQ ACK codebook of the cell.

In a fifth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented.

In a sixth aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the method described in the first aspect. .

In a seventh aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the method described in the first aspect. Method steps.

In the embodiment of this application, for the situation where the target DCI schedules PDSCH of multiple cells, the terminal determines the candidate PDSCH reception opportunity set of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit. Since the target cell is the target DCI Any one of the multiple scheduled cells, so the terminal can obtain the candidate PDSCH reception opportunity sets of at least two cells, and then the terminal determines the HARQ ACK codebook of the target cell based on the candidate PDSCH reception opportunity set, so that the terminal side can feed back all HARQ ACK codebook.

Description of the drawings

Figure 1 is a schematic diagram of a wireless communication system applicable to the embodiment of the present application;

Figure 2 is a schematic diagram of DCI scheduling PDSCH of multiple target cells;

Figure 3 is one of the flow diagrams of the HARQ ACK codebook feedback method provided by the embodiment of the present application;

Figure 4 is the second flow diagram of the HARQ ACK codebook feedback method provided by the embodiment of the present application;

Figure 5 is a schematic structural diagram of a HARQ ACK codebook feedback device provided by an embodiment of the present application;

Figure 6 is one of the structural schematic diagrams of a terminal provided by an embodiment of the present application;

Figure 7 is a second structural schematic diagram of a terminal provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and "second" are distinguished objects It is usually one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, and NR terminology is used in most of the following description, but these techniques can also be applied to communication systems other than NR system applications, such as 6th generation Generation, 6G) communication system.

Figure 1 is a schematic diagram of a wireless communication system applicable to the embodiment of the present application. The wireless communication system shown in Figure 1 includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, or a super mobile personal computer. (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device) , vehicle-mounted equipment (VUE), pedestrian terminal (PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (personal computers, PC), teller machines or self-service Terminal devices such as mobile phones, wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), Smart wristbands, smart clothing, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11.

The network side device 12 may include an access network device or a core network device, where the access network device may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a wireless device. access network unit. Access network equipment may include base stations, WLAN access points or WiFi nodes, etc. The base stations may be called Node B, Evolved Node B (eNB), Access Point, Base Transceiver Station (BTS), Radio Base Station , radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home B-Node, Home Evolved B-Node, Transmitting Receiving Point (TRP) or the above Some other appropriate terminology in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only the base station in the NR system is used as an example for introduction. Define the specific type of base station. The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), unified Data warehousing (Unified Data Repository, UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), location management function (LMF), enhanced Serving Mobile Location Center (Enhanced Serving Mobile Location Centre, E-SMLC), network data analytics function (NWDAF), etc. It should be noted that in the embodiment of this application, only the core network equipment in the NR system is used as an example for introduction, and the specific type of the core network equipment is not limited.

In related technologies, for one DCI to schedule multiple PDSCHs of a cell, the time slot sequence set can be extended. However, for one DCI to schedule PDSCH of multiple cells, since the TDRA table of PDSCH is configured based on each downlink BWP of each cell, and the SCS of different downlink BWPs may be different. Therefore, when DCI schedules PDSCHs of multiple cells, the terminal cannot extend the time slot sequence set (K1 set), and thus cannot obtain the candidate PDSCH reception opportunity sets corresponding to each of the multiple cells. Figure 2 is a schematic diagram of DCI scheduling PDSCH of multiple target cells. As shown in Figure 2, a DCI schedules PDSCH1 of cell 1, PDSCH2 of cell 2, PDSCH3 of cell 3 and PDSCH4 of cell 4; time slot n is the time slot where the PUCCH is located; the candidate DL slot inferred by the terminal based on the time slot sequence set are time slot n-1, time slot n-2 and time slot n-4. Since the SLIVs of multiple PDSCHs scheduled by DCI belong to different TDRAs, the time slot sequence set cannot be expanded using related technologies.

The HARQ ACK codebook feedback method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios.

Figure 3 is one of the flow diagrams of the HARQ ACK codebook feedback method provided by the embodiment of the present application. As shown in Figure 3, the method includes steps 301-302; where:

Step 301: The terminal determines the set of candidate physical downlink shared channel PDSCH reception opportunities of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit; wherein the target cell includes at least two pieces of target downlink control information DCI scheduling. Any one of the cells, each cell includes at least one PDSCH;

Step 302: The terminal determines the HARQ ACK codebook of the target cell based on the set of candidate PDSCH reception opportunities.

It should be noted that the embodiments of the present application can be applied in a scenario where the network side device schedules PDSCHs of multiple cells through one DCI, and each cell has at least one PDSCH. The terminal includes but is not limited to the types of terminal 11 listed above, and this application is not limited thereto.

In practice, the SLIV and/or K0 of the PDSCHs of multiple cells scheduled by the target DCI are determined by the high-level parameter configuration sent by the network side device; the high-level parameter configuration includes a target table; each row of the target table includes: at least The joint coding information of the number of a cell, or the joint coding information of the corresponding start and length indicator (SLIV) of at least one cell; the SLIV is used to indicate the starting symbol and the number of consecutive symbols of the PDSCH of the cell; the target At least one row in the table contains the numbers of at least two cells or the joint coding information of SLIV.

In the HARQ ACK codebook feedback method provided by the embodiment of this application, in the case where the target DCI schedules PDSCH of multiple cells, the terminal determines the candidate PDSCH reception opportunity set of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit. , since the target cell is any one of the multiple cells scheduled by the target DCI, the terminal can obtain the candidate PDSCH reception opportunity sets of at least two cells, and then the terminal determines the HARQ ACK codebook of the target cell based on the candidate PDSCH reception opportunity set, This allows the terminal side to feedback all HARQ ACK codebooks.

In the embodiment of this application, the terminal determines the candidate PDSCH reception opportunity set of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit, which may include the following steps:

Step a. The terminal feedbacks the time slot sequence set corresponding to the time slot unit based on HARQ ACK, and the The first SLIV of the first cell jointly encoded with the second SLIV of the target cell in the target table determines the extended time slot sequence set corresponding to the target cell, thereby realizing expansion of the time slot sequence set between different cells.

Wherein, the first SLIV represents the SLIV with the latest time domain end time in the target row; the target behavior is the row where the target cell is located in the target table; the time slot sequence set corresponding to the HARQ ACK feedback time slot unit is Configured by network side equipment through high-level parameters;

The second SLIV represents at least one of the following:

1) A SLIV of the target cell in the target row of the target table; the target row includes any row in the target table;

2) The SLIV with the latest end time of the target cell in the target row of the target table;

3) The second SLIV represents all SLIVs of the target cell in the target row that are jointly encoded with the first SLIV.

It should be noted that the second SLIV can be a SLIV. For example: when the target cell has a SLIV in the x-th row of the target table, the second SLIV corresponds to the SLIV; if there are multiple SLIVs in the x-th row, the second SLIV It is the SLIV with the latest end time among the multiple SLIVs in row x of the target table for the target cell;

Alternatively, the second SLIV may be a set including all SLIVs of the target cell in the target row that are jointly encoded with the first SLIV.

Step b: The terminal determines a set of candidate PDSCH reception opportunities for the target cell based on the extended time slot timing set corresponding to the target cell. Since the target cell is any one of the multiple cells scheduled by the target DCI, the terminal can obtain the set of candidate PDSCH reception opportunities of at least two cells, ensuring that the PDSCH scheduled by the DCI can have corresponding PUCCH for HARQ ACK codebook feedback. It can reduce HARQ ACK feedback overhead and reduce terminal energy consumption.

In the embodiment of the present application, in the above step a, the terminal feedbacks the time slot sequence set corresponding to the time slot unit based on the HARQ ACK, and the first value of the first cell jointly encoded with the second SLIV of the target cell in the target table. SLIV, the implementation method of determining the extended time slot sequence set corresponding to the target cell, may include at least one of the following methods:

(1) The first method, for the case where the subcarrier spacing (SCS) of the downlink BWP where the PDSCH is located is the same, includes the following steps 1 and 2:

Step 1. When the SCS of the downlink BWP where multiple PDSCHs of the target cell are located are the same, the terminal determines the difference between the first K0 corresponding to the first SLIV and the second K0 corresponding to the second SLIV. value to obtain the first value; the K0 represents the number of time slots/sub-slots from the target DCI end position to the PDSCH start position.

Optionally, the terminal calculates the difference between the first K0 corresponding to the first SLIV and the second K0 corresponding to the second SLIV based on formula (1), and obtains the first value ΔK0,r(d);
ΔK0,r(d)＝|K0,2-K0,1| (1)

Step 2: The terminal determines the time slot sequence set corresponding to the uplink BWP where the HARQ ACK feedback time slot unit is located based on the first value, the SCS of the uplink BWP where the HARQ ACK feedback time slot unit is located, and the second SLIV The corresponding second SCS determines the extended time slot sequence set corresponding to the target cell.

Optionally, the terminal calculates the extended time slot sequence set K1,T corresponding to the target cell based on formula (2);

Wherein, K1 represents the time slot sequence set corresponding to the uplink BWP where the HARQ ACK feedback time slot unit is located; K0,1 represents the first K0 corresponding to the first SLIV, and K0,2 represents the third K0 corresponding to the second SLIV. K0; μ _UL represents the SCS of the uplink BWP where the HARQ ACK feedback slot unit is located, μ _DL1 represents the first SCS corresponding to the first SLIV, and μ _DL2 represents the second SCS corresponding to the second SLIV; so The ΔK0,r(d) represents the d-th ΔK0 in the r-th row of the target table; d is the number of SLIVs included in the second SLIV.

In practice, when the second SLIV is a SLIV, d is equal to 1; when the second SLIV is a set, d is equal to the number of SLIVs included in the second SLIV.

For example, in the case where the second SLIV represents a SLIV of the target cell in the target row of the target table, d is equal to 1;

The second SLIV indicates the end time of the target cell in the target row of the target table. In the case of late SLIV, d equals 1;

In the case where the second SLIV represents all the SLIVs of the target cell in the target row that are jointly encoded with the first SLIV, d is equal to the number of SLIVs included in the second SLIV.

It should be noted that the first SLIV may include at least one of the following:

The SLIV corresponding to the largest K0 in the target row of the target table;

The maximum SLIV of the sum of the symbol start index S and the symbol length L in the target row of the target table;

In the case where at least two K0s in the target rows of the target table are the same and have maximum values, and the sums of S and L are the same, the SLIV corresponding to the cell with the smallest or largest SCS of the cell in each SLIV;

In the case where at least two K0s in the target row of the target table are the same and both have maximum values, and the sums of S and L are the same, the SLIV corresponding to the BWP with the smallest or largest SCS of the BWP in each SLIV;

In the case where at least two K0s in the target rows of the target table are the same and have maximum values, and the sums of S and L are the same, the SLIV corresponding to the cell with the smallest or largest cell index of the cell in each SLIV;

When there are at least two K0s in the target row of the target table that are the same and have maximum values, and the sums of S and L are the same, the SLIV corresponding to the BWP with the smallest or largest BWP index in each SLIV.

(2) The second method specifically includes the following steps A and B:

Step A: The terminal performs the calculation based on the first K0 corresponding to the first SLIV, the second K0 corresponding to the second SLIV, the SCS of the uplink BWP where the HARQ ACK feedback slot unit is located, and the third K0 corresponding to the first SLIV. An SCS and a second SCS corresponding to the second SLIV determine the second value.

Optionally, the terminal is based on the first K0 corresponding to the first SLIV, the second K0 corresponding to the second SLIV, the SCS of the UL BWP where the HARQ ACK feedback slot unit is located, the first SLIV For the corresponding first SCS and the second SCS corresponding to the second SLIV, formula (3) and formula (4) are used to calculate the second value ΔK' ₁ , or formula (3) and formula (5) are used to calculate the second value ΔK' 1 The second value ΔK'₁;

ΔK' ₁ =ΔK ₁ ∪(ΔK ₁ -m ₁ )∪(ΔK ₁ -m ₂ ) (4)
ΔK' ₁ =ΔK ₁ ∪(ΔK ₁ -m ₁ )∪...(ΔK ₁ -m _i )...∪(ΔK ₁ -m _k ) (5)

Step B: The terminal determines the extended slot timing set corresponding to the target cell based on the second value and the slot timing set corresponding to the uplink BWP where the HARQ ACK feedback slot unit is located.

For example, the terminal adds the second value to each element in the time slot sequence set corresponding to the HARQ ACK feedback time slot unit to obtain the extension value corresponding to each element; calculates the union of the extension values , obtain the extended time slot sequence set corresponding to the target cell.

Optionally, the terminal uses formula (6) to calculate the extended time slot sequence set K _1,T corresponding to the target cell;
K _1,T ＝K _1,T ∪(K ₁ +ΔK' ₁ ) (6)

Wherein, μ _UL represents the SCS of the UL BWP where the HARQ ACK feedback slot unit is located, μ _DL1 represents the first SCS corresponding to the first SLIV, and μ _DL2 represents the second SCS corresponding to the second SLIV; K0, 1 represents the first K0 corresponding to the first SLIV, and K0, 2 represents the second K0 corresponding to the second SLIV; 1<i<k,k,m _k is a positive integer. For example, when k is 2, m1=1, and mk=2, formula (5) is equivalent to: ΔK' ₁ =ΔK ₁ ∪(ΔK ₁ -1)∪(ΔK ₁ -2).

Based on the second method, the first SLIV is determined according to the following steps:

The SLIV with the latest end time in the target row in the target table determined based on the first reference SCS;

Include reference K0 and reference SLIV for all SLIVs of the target row in the target table determined based on the first reference SCS;

Determine the SLIV with the latest end time of the target row in the target table based on the reference K0 and the reference SLIV.

Optionally, the first SLIV may include at least one of the following:

1) The SLIV corresponding to the largest reference K0 in the target row of the target table; the target row refers to the row where the second SLIV is located;

2) When at least two references K0 in the target row of the target table are the same, the maximum SLIV of the sum of the reference start index S and the reference symbol length L; the target row refers to the second The row where SLIV is located;

3) In the case where at least two references K0 in the target row of the target table are the same and both have maximum values, and the sum of reference S and reference L is the same, the cell with the smallest or largest SCS of the cell in each SLIV The corresponding SLIV; the target row refers to the row where the second SLIV is located;

4) When there are at least two references K0 in the target row of the target table that are the same and both have maximum values, and the sum of reference S and reference L is the same, the BWP with the smallest or largest SCS of the BWP in each SLIV The corresponding SLIV; the target row refers to the row where the second SLIV is located;

5) When at least two references K0 in the target row of the target table are the same and both have maximum values, and the sum of reference S and reference L is the same, the cell index of the cell in each SLIV is the smallest or the largest. The SLIV corresponding to the cell; the target row refers to the row where the second SLIV is located;

6) When there are at least two references K0 in the target row of the target table that are the same and both have the maximum value, and the sum of the reference S and the reference L is the same, the BWP index of the BWP in each SLIV is the smallest or the largest The SLIV corresponding to the BWP; the target row refers to the row where the second SLIV is located.

In practice, the time domain position of the PUCCH is determined based on the end time domain position of the first PDSCH and K1. The first PDSCH is the PDSCH with the latest time domain end time of the PDSCHs of multiple cells scheduled by DCI. K1 is the first PDSCH to PUCCH. The number of time domain units (slot/sub-slot/symbol, etc.).

Optionally, the first reference SCS may include at least one of the following:

a) The SCS used to carry the PDCCH of the target DCI;

b) The SCS of the PUCCH corresponding to the HARQ ACK feedback slot unit;

c) The SCS of the PUSCH corresponding to the HARQ ACK feedback slot unit;

d) The SCS of the SLIV at the preset position of each row of the preset target table;

e) The SCS of the cell with the smallest or largest cell index among the cells scheduled by the target DCI;

f) The SCS of the BWP with the smallest or largest BWP index among the BWPs of each cell scheduled by the target DCI.

Give an example of SCS conversion: compare the values of the first reference SCS conversion reference K0 and or reference SLIV to determine the PDSCH with the latest end time in the rth row of the time domain resource allocation table, and obtain the reference K0 is the largest, or when there is the same maximum reference K0, the S+L of the reference SLIV is the largest. If the values of reference K0 and reference S+L are the same, that is, the absolute end time of PDSCH is the same, it is determined based on the maximum/minimum SCS where the PDSCH is located and the maximum/minimum cell/BWP index.

In practice, the first reference SCS is the SCS of PDCCH/PUCCH/PUSCH or the SCS of the preset first/last SLIV, the cell index or the SCS with the smallest/largest BWP index.

In the embodiment of the present application, in step b above, the terminal determines the candidate PDSCH reception opportunity set of the target cell based on the extended time slot timing set corresponding to the target cell. The implementation method may include step 1) and step 2):

Step 1), the terminal determines at least one candidate PDSCH reception slot position based on the extended slot timing set corresponding to the target cell and the time domain position of the HARQ ACK feedback slot unit;

Step 2): The terminal excludes candidate PDSCH reception opportunities that conflict with the uplink symbols configured by the network side device at each candidate PDSCH reception time slot position, and determines a set of candidate PDSCH reception opportunities within each PDSCH reception time slot position. ; The candidate PDSCH reception opportunity corresponds to a SLIV in the target table.

In practice, the terminal determines a set of candidate PDSCH reception opportunities in each slot for each K1 value. Based on the K0 and SLIV associated with the downlink BWP, rows with non-overlapping time domain resources are obtained, and only one of the overlapping rows is considered.

Optionally, in the case where at least one of the candidate PDSCH reception opportunities conflicts with an uplink symbol, the terminal excludes other SLIVs jointly encoded with the target SLIV in the target table; the candidate PDSCH reception opportunities correspond to the target SLIV .

That is to say, when one SLIV in the jointly encoded SLIV conflicts with the uplink symbol, other SLIVs in the same line cannot be sent. And based on the excluded SLIV, exclude other SLIVs indicated by the joint encoding of other cells in the target row in the target table.

Here, an example is given to illustrate the HARQ ACK codebook feedback method provided by the embodiment of the present application.

Example 1: DCI schedules 2 cells (Cell 1 and Cell 2), and the HARQ ACK corresponding to the cells is fed back on the PUCCH of UL BWP.

An example of a target table is shown in Table 1: Each row in Table 1 includes the SLIV for Cell 1 and Cell 2 jointly encoded information. The SLIV of cell 1 and cell 2 is jointly indicated through higher layer joint TDRA.

Table 1

The terminal can obtain which SLIV's time domain end position is at the end based on the SCS of cell 1 (BWP) and cell 2 (BWP) and the K0 configured in the target row (row).

1) When the SCS of cell 1 and the SCS of cell 2 are the same, take the first row of Table 1 as an example, assuming that the time domain end position of {K0,2,SLIV 2} in the first row is later than {K0, 1, SLIV 1}, then ΔK0,1(d)=|K0,2-K0,1|; then feedback the time slot sequence set corresponding to the uplink BWP where the time slot unit is located based on ΔK0,1(d) and HARQ ACK , calculate the extended K1 value K1,T corresponding to cell 1:

Wherein, K1 represents the time slot sequence set corresponding to the uplink BWP where the HARQ ACK feedback time slot unit is located; μ _UL represents the SCS of the uplink BWP where the HARQ ACK feedback time slot unit is located; μ _DL1 represents the first SLIV corresponding The first SCS.

2) When the SCS of cell 1 is different from the SCS of cell 2, take the first row of Table 1 as an example, assuming that the time domain end position of {K0,2,SLIV 2} in the first row is later than {K0, 1, SLIV 1}, then the terminal uses formula (3) and formula (4) to calculate the second value ΔK' ₁ , or uses formula (3) and formula (5) to calculate the second value ΔK'₁;

ΔK' ₁ =ΔK ₁ ∪(ΔK ₁ -m ₁ )∪(ΔK ₁ -m ₂ ) (4)
ΔK' ₁ =ΔK ₁ ∪(ΔK ₁ -m ₁ )∪...(ΔK ₁ -m _i )...∪(ΔK ₁ -m _k ) (5)

The terminal uses formula (6) to calculate the extended time slot timing set K _1,T corresponding to the target cell;
K _1,T ＝K _1,T ∪(K ₁ +ΔK' ₁ ) (6)

Wherein, μ _UL represents the SCS of the UL BWP where the HARQ ACK feedback slot unit is located, μ _DL1 represents the first SCS corresponding to the first SLIV, and μ _DL2 represents the second SCS corresponding to the second SLIV; 1<i<k, k, m _k is a positive integer.

Similarly, for row 2 of Table 1, assuming that the time domain end position of {K0,3,SLIV 3} is later than {K0,4,SLIV 4}, cell 2 also gets an expanded K1 value.

After the terminal polls all rows (TDRA table) according to the row index in Table 1, it obtains the extended time slot sequence set for each target cell.

Example 2: After the terminal obtains the extended time slot sequence set for each cell, the terminal obtains the downlink candidates of each cell according to the uplink time slot where the PUCCH is located in order of the cell index from small to large or from large to small. slot. When SLIV1 conflicts with the uplink symbols configured by the network side device, SLIV1 is excluded. Since SLIV1 and SLIV2 are jointly encoded and indicated in the first line, SLIV2 is also excluded even though SLIV2 does not conflict with the uplink symbols configured by the network side device. Furthermore, if SLIV2 also exists in at least one other row in Table 1, SLIV2 can be retained.

Example 3: When the network side device schedules the PDSCH of multiple cells through DCI, the K1 obtained by indirect or direct instructions for each PDSCH needs to be guaranteed to be within the time slot sequence set of the UL BWP corresponding to the PDSCH.

The time slot sequence set corresponding to the HARQ ACK feedback time slot unit includes the time slot sequence corresponding to the PDSCH of each cell indicated by the network side device. For example, DCI schedules 2 cells (cell 1 and cell 2), and the corresponding HARQ ACK is fed back on the PUCCH of UL BWP. The K0 and SLIV of cell 1 (the BWP) and cell 2 (the BWP) are respectively indicated by DCI. The K1 indicated by DCI is the number of slots from the UL slot corresponding to the PDSCH with the latest time domain end time to the PUCCH (for example, the PDSCH of cell 1). From this, the K1 corresponding to the PDSCH of cell 2 can be deduced. The base station scheduling needs to ensure that cell 1 K1 and K1 of cell 2 are both within the time slot sequence set associated with UL BWP. The HARQ ACK codebook feedback method provided by the embodiment of this application can clarify the UE behavior and reduce the risk of HARQ ACK feedback by extending the time slot sequence set between different cells and excluding SLIV when one DCI schedules the PDSCH of multiple cells. overhead and reduce terminal energy consumption.

Figure 4 is a second flow diagram of the HARQ ACK codebook feedback method provided by the embodiment of the present application. As shown in Figure 4, the method includes steps 401-403; wherein:

Step 401: The terminal determines that the target cell corresponds to the time slot sequence set corresponding to the HARQ ACK feedback time slot unit and the first SLIV of the first cell jointly encoded with the second SLIV of the target cell in the target table. A set of extended time slot sequences;

Optionally, the target cell includes any one of at least two cells scheduled by the target downlink control information DCI, and each cell includes at least one PDSCH.

Step 402: The terminal determines a set of candidate PDSCH reception opportunities for the target cell based on the extended time slot timing set corresponding to the target cell;

Wherein, the first SLIV represents the SLIV with the latest time domain end time in the target row; the target behavior is the row in the target table where the target cell is located; the second SLIV represents at least one of the following:

1) A SLIV of the target cell in the target row of the target table;

Step 403: The terminal determines the HARQ ACK codebook of the target cell based on the set of candidate PDSCH reception opportunities.

For the HARQ ACK codebook feedback method provided by the embodiment of the present application, the execution subject may be a HARQ ACK codebook feedback device. In the embodiment of the present application, the HARQ ACK codebook feedback device performs the HARQ ACK codebook feedback method as an example to illustrate the HARQ ACK codebook feedback device provided by the embodiment of the present application.

Figure 5 is a schematic structural diagram of a HARQ ACK codebook feedback device provided by an embodiment of the present application. As shown in Figure 5, the HARQ ACK codebook feedback device 500 is applied to a terminal and includes:

The first determination module 501 is used to determine the candidate physical downlink shared channel PDSCH reception opportunity set of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit; wherein the target cell includes target downlink control information DCI Any one of at least two scheduled cells, each cell including at least one PDSCH;

The second determination module 502 is configured to determine the HARQ ACK codebook of the target cell based on the set of candidate PDSCH reception opportunities.

The HARQ ACK codebook feedback device provided by the embodiment of this application determines the candidate PDSCH reception opportunity set of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit for the situation where the target DCI schedules PDSCH of multiple cells. The target cell is any one of the multiple cells scheduled by the target DCI, so the terminal can obtain the candidate PDSCH reception opportunity sets of at least two cells, and then the terminal determines the HARQ ACK codebook of the target cell based on the candidate PDSCH reception opportunity set, so that The terminal side can feedback all HARQ ACK codebooks.

Optionally, the target DCI scheduled cell is determined through high-layer parameter configuration sent by the network side device;

The high-level parameter configuration includes a target table; each row of the target table includes: joint coding information of the number of at least one cell, or joint coding information of the start and length indicator SLIV corresponding to at least one cell; the SLIV uses Indicates the starting symbol and the number of consecutive symbols of the PDSCH of the cell; at least one row in the target table contains the numbers of at least two cells or the joint coding information of SLIV.

Optionally, the first determination module 501 is further used to:

Based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit and the first SLIV of the first cell jointly encoded with the second SLIV of the target cell in the target table, the extended time slot corresponding to the target cell is determined time series collection;

Based on the extended time slot timing set corresponding to the target cell, determine a set of candidate PDSCH reception opportunities for the target cell;

A SLIV of the target cell in the target row of the target table;

The SLIV with the latest end time of the target cell in the target row of the target table;

The second SLIV represents all SLIVs of the target cell in the target row that are jointly encoded with the first SLIV.

Optionally, the first determination module 501 is further used to:

When the subcarrier spacing SCS of the downlink partial bandwidth BWP where multiple PDSCHs of the target cell are located is the same, determine the difference between the first K0 corresponding to the first SLIV and the second K0 corresponding to the second SLIV. , obtain the first value; the K0 represents the number of time slots/sub-slots from the target DCI end position to the PDSCH start position;

Based on the first value, the time slot sequence set corresponding to the uplink BWP where the HARQ ACK feedback time slot unit is located, the SCS of the uplink BWP where the HARQ ACK feedback time slot unit is located, and the second corresponding to the second SLIV SCS determines the extended time slot sequence set corresponding to the target cell.

Optionally, the first determination module 501 is further used to:

Calculate the difference between the first K0 corresponding to the first SLIV and the second K0 corresponding to the second SLIV based on formula (1) to obtain a first value ΔK0,r(d);
ΔK0,r(d)＝|K0,2-K0,1| (1)

Calculate the extended time slot timing set K1,T corresponding to the target cell based on formula (2);

Wherein, K1 represents the time slot sequence set corresponding to the uplink BWP where the HARQ ACK feedback time slot unit is located; K0,1 represents the first K0 corresponding to the first SLIV, and K0,2 represents the third K0 corresponding to the second SLIV. K0; μ _UL represents the SCS of the uplink BWP where the HARQ ACK feedback slot unit is located, μ _DL1 represents the first SCS corresponding to the first SLIV, and μ _DL2 represents the second SCS corresponding to the second SLIV; so The above ΔK0,r(d) represents the dth Δ in the rth row of the target table K0;d is the number of SLIVs included in the second SLIV.

Optionally, the first SLIV may include at least one of the following:

The SLIV corresponding to the largest K0 in the target row of the target table;

Optionally, the first determination module 501 is further used to:

Based on the first K0 corresponding to the first SLIV, the second K0 corresponding to the second SLIV, the SCS of the uplink BWP where the HARQ ACK feedback slot unit is located, the first SCS corresponding to the first SLIV and the The second SCS corresponding to the second SLIV is used to determine the second value;

Based on the second value and the time slot timing set corresponding to the uplink BWP where the HARQ ACK feedback slot unit is located, the extended time slot timing set corresponding to the target cell is determined.

Optionally, the first determination module 501 is further used to:

Based on the first K0 corresponding to the first SLIV, the second K0 corresponding to the second SLIV, the SCS of the UL BWP where the HARQ ACK feedback slot unit is located, the first SCS corresponding to the first SLIV and the For the second SCS corresponding to the second SLIV, formula (3) and formula (4) are used to calculate the second value ΔK' ₁ , or formula (3) and formula (5) are used to calculate the second value ΔK'₁;

ΔK' ₁ =ΔK ₁ ∪(ΔK ₁ -m ₁ )∪(ΔK ₁ -m ₂ ) (4)
ΔK' ₁ =ΔK ₁ ∪(ΔK ₁ -m ₁ )∪...(ΔK ₁ -m _i )...∪(ΔK ₁ -m _k ) (5)

Use formula (6) to calculate the extended time slot timing set K _1,T corresponding to the target cell;
K _1,T ＝K _1,T ∪(K ₁ +ΔK' ₁ ) (6)

Wherein, μ _UL represents the SCS of the UL BWP where the HARQ ACK feedback slot unit is located, μ _DL1 represents the first SCS corresponding to the first SLIV, and μ _DL2 represents the second SCS corresponding to the second SLIV; K0, 1 represents the first K0 corresponding to the first SLIV, and K0, 2 represents the second K0 corresponding to the second SLIV; 1<i<k,k,m _k is a positive integer.

Optionally, the first SLIV is determined according to the following steps:

Optionally, the first SLIV includes at least one of the following:

The SLIV corresponding to the largest reference K0 in the target row of the target table;

In the case where at least two references K0 in the target row of the target table are the same, the maximum SLIV of the sum of the reference start index S and the reference symbol length L;

In the case where at least two references K0 in the target row of the target table are the same and both have maximum values, and the sum of reference S and reference L is the same, the cell corresponding to the minimum or maximum SCS of the cell in each SLIV SLIV;

When there are at least two references K0 in the target row of the target table that are the same and both have maximum values, and the sum of reference S and reference L is the same, the BWP corresponding to the smallest or largest SCS of the BWP in each SLIV SLIV;

When at least two references K0 in the target row of the target table are the same and both have maximum values, and the sum of reference S and reference L is the same, the cell index of the cell in each SLIV is the smallest. Or the SLIV corresponding to the largest cell;

When there are at least two references K0 in the target row of the target table that are the same and have maximum values, and the sum of reference S and reference L is the same, the BWP with the smallest or largest BWP index of the BWP in each SLIV corresponds to SLIV.

Optionally, the first reference SCS includes at least one of the following:

The SCS of the physical downlink control channel PDCCH used to carry the target DCI;

The SCS of the physical uplink control channel PUCCH corresponding to the HARQ ACK feedback time slot unit;

The SCS of the physical uplink shared channel PUSCH corresponding to the HARQ ACK feedback time slot unit;

The SCS of SLIV at the preset position of each row of the default target table;

The SCS of the cell with the smallest or largest cell index among the cells scheduled by the target DCI;

The SCS of the BWP with the smallest or largest BWP index among the BWPs of each cell scheduled by the target DCI.

Optionally, the first determination module 501 is further used to:

Determine at least one candidate PDSCH reception slot position based on the extended slot timing set corresponding to the target cell and the time domain position of the HARQ ACK feedback slot unit;

At each candidate PDSCH reception slot position, candidate PDSCH reception opportunities that conflict with the uplink symbols configured by the network side device are excluded. The candidate PDSCH reception opportunities correspond to a SLIV in the target table, and each PDSCH reception time is determined. The set of candidate PDSCH reception opportunities within the slot position.

Optionally, the first determination module 501 is further used to:

In the case where at least one of the candidate PDSCH reception opportunities conflicts with an uplink symbol, other SLIVs jointly encoded with the target SLIV in the target table are excluded; the candidate PDSCH reception opportunities correspond to the target SLIV.

Optionally, the time slot timing set corresponding to the HARQ ACK feedback time slot unit includes the time slot timing corresponding to the PDSCH of each cell indicated by the network side device.

The HARQ ACK codebook feedback device in the embodiment of the present application may be an electronic device, for example, with The electronic device that operates the operating system can also be a component in the electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal.

The HARQ ACK codebook feedback device provided by the embodiments of this application can implement each process implemented by the method embodiments of Figures 3 to 4, and achieve the same technical effect. To avoid duplication, it will not be described again here.

Figure 6 is one of the structural schematic diagrams of a terminal provided by an embodiment of the present application. As shown in Figure 6, the terminal 600 includes a processor 601 and a memory 602. The memory 602 stores programs that can run on the processor 601. or instructions. When this program or instruction is executed by the processor 601, each step of the above HARQ ACK codebook feedback method embodiment is implemented, and the same technical effect can be achieved.

Embodiments of the present application also provide a terminal, including a processor and a communication interface, wherein the processor is configured to: determine the candidate physical downlink shared channel of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit A set of PDSCH reception opportunities; wherein the target cell includes any one of at least two cells scheduled by the target downlink control information DCI, and each cell includes at least one PDSCH; based on the set of candidate PDSCH reception opportunities, determine the target The HARQ ACK codebook of the cell. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.

Figure 7 is the second structural schematic diagram of a terminal provided by an embodiment of the present application. As shown in Figure 7, the terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, At least some components of the display unit 706, the user input unit 707, the interface unit 708, the memory 709, the processor 710, and the like.

Those skilled in the art can understand that the terminal 700 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 710 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in FIG. 7 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.

It should be understood that in this embodiment of the present application, the input unit 704 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and microphone 7042, the graphics processor 7041 processes image data of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072 . Touch panel 7071, also called touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 701 can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.

Memory 709 may be used to store software programs or instructions as well as various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 709 may include volatile memory or non-volatile memory, or memory 709 may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and Direct Rambus RAM (Direct Rambus RAM, DRRAM). Memory 709 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above-mentioned modem processor may not be integrated into the processor 710.

Wherein, the processor 710 is configured to determine the candidate physical downlink shared channel PDSCH reception opportunity set of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit; wherein the target cell includes target downlink control information DCI Any one of the at least two scheduled cells, each cell includes at least one PDSCH; based on the set of candidate PDSCH reception opportunities, determine the HARQ ACK codebook of the target cell.

The terminal provided by the embodiment of this application, for the situation where the target DCI schedules PDSCH of multiple cells, the terminal determines the candidate PDSCH reception opportunity set of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit, because the target cell is the target Any one of the multiple cells scheduled by DCI, so the terminal can obtain the candidate PDSCH reception opportunity set of each of at least two cells, and then the terminal determines the HARQ ACK codebook of the target cell based on the candidate PDSCH reception opportunity set, so that the terminal side can provide feedback All HARQ ACK codebooks.

Embodiments of the present application also provide a readable storage medium. The readable storage medium may be volatile or non-volatile. The readable storage medium stores a program or instructions. The program Or when the instruction is executed by the processor, each process of the above HARQ ACK codebook feedback method embodiment is implemented, and the same technical effect can be achieved. To avoid duplication, it will not be described again here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the above HARQ ACK codebook feedback method. Each process of the embodiment, and can achieve the same technical effect, is To avoid repetition, we will not go into details here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the above HARQ ACK codebook feedback Each process of the method embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations, which are only illustrative and not restrictive. Inspired by this application, those of ordinary skill in the art can make many forms without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims

A hybrid automatic retransmission confirmation HARQ ACK codebook feedback method includes:

The terminal determines the set of candidate physical downlink shared channel PDSCH reception opportunities of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit; wherein the target cell includes at least two cells scheduled by the target downlink control information DCI Any one of them, each cell includes at least one PDSCH;

The terminal determines the HARQ ACK codebook of the target cell based on the set of candidate PDSCH reception opportunities.
The HARQ ACK codebook feedback method according to claim 1, wherein the target DCI scheduled cell is determined by the high-level parameter configuration sent by the network side device;

The high-level parameter configuration includes a target table; each row of the target table includes: joint coding information of the number of at least one cell, or joint coding information of the start and length indicator SLIV corresponding to at least one cell; the SLIV uses Indicates the starting symbol and the number of consecutive symbols of the PDSCH of the cell; at least one row in the target table contains the numbers of at least two cells or the joint coding information of SLIV.
The HARQ ACK codebook feedback method according to claim 2, wherein the terminal determines the candidate physical downlink shared channel PDSCH reception opportunity set of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit, including :

The terminal determines the time slot sequence set corresponding to the HARQ ACK feedback time slot unit and the first SLIV of the first cell jointly encoded with the second SLIV of the target cell in the target table. Extended slot timing set;

The terminal determines a set of candidate PDSCH reception opportunities for the target cell based on an extended time slot timing set corresponding to the target cell;

Wherein, the first SLIV represents the SLIV with the latest time domain end time in the target row; the target behavior is the row in the target table where the target cell is located; the second SLIV represents at least one of the following:

A SLIV of the target cell in the target row of the target table;

The SLIV with the latest end time of the target cell in the target row of the target table;

The second SLIV represents all SLIVs of the target cell in the target row that are jointly encoded with the first SLIV.
The HARQ ACK codebook feedback method according to claim 3, wherein the terminal is based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit, and the second SLIV joint coding with the target cell in the target table The first SLIV of the first cell is used to determine the extended time slot sequence set corresponding to the target cell, including:

When the subcarrier spacing SCS of the downlink partial bandwidth BWP where multiple PDSCHs of the target cell are located is the same, the terminal determines the first K0 corresponding to the first SLIV and the second K0 corresponding to the second SLIV. The difference is the first value; the K0 represents the number of time slots/sub-slots from the target DCI end position to the PDSCH start position;

The terminal corresponds to the first value, the time slot sequence set corresponding to the uplink BWP where the HARQ ACK feedback time slot unit is located, the SCS of the uplink BWP where the HARQ ACK feedback time slot unit is located, and the second SLIV. The second SCS determines the extended time slot sequence set corresponding to the target cell.
The HARQ ACK codebook feedback method according to claim 4, wherein the terminal determines the difference between the first K0 corresponding to the first SLIV and the second K0 corresponding to the second SLIV to obtain the first value, include:

The terminal calculates the difference between the first K0 corresponding to the first SLIV and the second K0 corresponding to the second SLIV based on formula (1), and obtains a first value ΔK0,r(d);
ΔK0,r(d)＝|K0,2-K0,1| (1)

The terminal corresponds to the first value, the time slot sequence set corresponding to the uplink BWP where the HARQ ACK feedback time slot unit is located, the SCS of the uplink BWP where the HARQ ACK feedback time slot unit is located, and the second SLIV. The second SCS determines the extended time slot sequence set corresponding to the target cell, including:

The terminal calculates the extended time slot timing set K1,T corresponding to the target cell based on formula (2);

Wherein, K1 represents the time slot sequence set corresponding to the uplink BWP where the HARQ ACK feedback time slot unit is located; K0,1 represents the first K0 corresponding to the first SLIV, and K0,2 represents the third K0 corresponding to the second SLIV. K0; μ UL represents the SCS of the uplink BWP where the HARQ ACK feedback slot unit is located, μ DL1 represents the first SCS corresponding to the first SLIV, and μ DL2 represents the second SCS corresponding to the second SLIV; so The ΔK0,r(d) represents the d-th ΔK0 in the r-th row of the target table; d is the number of SLIVs included in the second SLIV.
The HARQ ACK codebook feedback method according to claim 4, wherein the first SLIV includes at least one of the following:

The SLIV corresponding to the largest K0 in the target row of the target table;

The maximum SLIV of the sum of the symbol start index S and the symbol length L in the target row of the target table;

In the case where at least two K0s in the target rows of the target table are the same and have maximum values, and the sums of S and L are the same, the SLIV corresponding to the cell with the smallest or largest SCS of the cell in each SLIV;

In the case where at least two K0s in the target row of the target table are the same and both have maximum values, and the sums of S and L are the same, the SLIV corresponding to the BWP with the smallest or largest SCS of the BWP in each SLIV;

In the case where at least two K0s in the target rows of the target table are the same and have maximum values, and the sums of S and L are the same, the SLIV corresponding to the cell with the smallest or largest cell index of the cell in each SLIV;

When there are at least two K0s in the target row of the target table that are the same and have maximum values, and the sums of S and L are the same, the SLIV corresponding to the BWP with the smallest or largest BWP index in each SLIV.
The HARQ ACK codebook feedback method according to claim 3, wherein the terminal is based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit, and the second SLIV joint coding with the target cell in the target table The first SLIV of the first cell is used to determine the extended time slot sequence set corresponding to the target cell, including:

The terminal is based on the first K0 corresponding to the first SLIV, the second K0 corresponding to the second SLIV, the SCS of the uplink BWP where the HARQ ACK feedback slot unit is located, and the first K0 corresponding to the first SLIV. SCS and the second SCS corresponding to the second SLIV, determine the second value;

The terminal determines the extended slot timing set corresponding to the target cell based on the second value and the slot timing set corresponding to the uplink BWP where the HARQ ACK feedback slot unit is located.
The HARQ ACK codebook feedback method according to claim 7, wherein the terminal is based on the first K0 corresponding to the first SLIV, the second K0 corresponding to the second SLIV, and the HARQ ACK feedback time slot unit. The SCS of the uplink BWP, the first SCS corresponding to the first SLIV, and the second SCS corresponding to the second SLIV determine the second value, including:

The terminal is based on the first K0 corresponding to the first SLIV, the second K0 corresponding to the second SLIV, the SCS of the ULBWP where the HARQ ACK feedback slot unit is located, and the first SCS corresponding to the first SLIV. and the second SCS corresponding to the second SLIV, use formula (3) and formula (4) to calculate the second value ΔK' 1 , or use formula (3) and formula (5) to calculate the second value ΔK '1;

ΔK' 1 =ΔK 1 ∪(ΔK 1 -m 1 )∪(ΔK 1 -m 2 ) (4)
ΔK' 1 =ΔK 1 ∪ ( ΔK 1 -m 1 )∪…(ΔK 1 -m i )…∪(ΔK 1 -m k ) (5)

The terminal determines the extended slot timing set corresponding to the target cell based on the second value and the slot timing set corresponding to the uplink BWP where the HARQ ACK feedback slot unit is located, including:

The terminal uses formula (6) to calculate the extended time slot timing set K 1,T corresponding to the target cell;
K 1,T ＝K 1,T ∪(K 1 +ΔK' 1 ) (6)

Wherein, μ UL represents the SCS of the ULBWP where the HARQ ACK feedback slot unit is located, μ DL1 represents the first SCS corresponding to the first SLIV, and μ DL2 represents the second SCS corresponding to the second SLIV; K0,1 represents the first K0 corresponding to the first SLIV, K0, 2 represents the second K0 corresponding to the second SLIV; 1<i<k,k,m k is a positive integer.
The HARQ ACK codebook feedback method according to claim 7, wherein the first SLIV is determined according to the following steps:

The SLIV with the latest end time in the target row in the target table determined based on the first reference SCS;

Include reference K0 and reference SLIV for all SLIVs of the target row in the target table determined based on the first reference SCS;

Determine the SLIV with the latest end time of the target row in the target table based on the reference K0 and the reference SLIV.
The HARQ ACK codebook feedback method according to claim 7, wherein the first SLIV includes at least one of the following:

The SLIV corresponding to the largest reference K0 in the target row of the target table;

In the case where at least two references K0 in the target row of the target table are the same, the maximum SLIV of the sum of the reference start index S and the reference symbol length L;

In the case where at least two references K0 in the target row of the target table are the same and both have maximum values, and the sum of reference S and reference L is the same, the cell corresponding to the minimum or maximum SCS of the cell in each SLIV SLIV;

When there are at least two references K0 in the target row of the target table that are the same and both have maximum values, and the sum of reference S and reference L is the same, the BWP corresponding to the smallest or largest SCS of the BWP in each SLIV SLIV;

When there are at least two references K0 in the target row of the target table that are the same and have maximum values, and the sum of reference S and reference L is the same, the cell with the smallest or largest cell index of the cell in each SLIV corresponds to SLIV;

When there are at least two references K0 in the target row of the target table that are the same and have maximum values, and the sum of reference S and reference L is the same, the BWP with the smallest or largest BWP index of the BWP in each SLIV corresponds to SLIV.
The HARQ ACK codebook feedback method according to claim 10, wherein the first reference SCS includes at least one of the following:

The SCS of the physical downlink control channel PDCCH used to carry the target DCI;

The SCS of the physical uplink control channel PUCCH corresponding to the HARQ ACK feedback time slot unit;

The physical uplink shared channel PUSCH corresponding to the HARQ ACK feedback slot unit SCS;

The SCS of SLIV at the preset position of each row of the default target table;

The SCS of the cell with the smallest or largest cell index among the cells scheduled by the target DCI;

The SCS of the BWP with the smallest or largest BWP index among the BWPs of each cell scheduled by the target DCI.
The HARQ ACK codebook feedback method according to claim 3, wherein the terminal determines the candidate PDSCH reception opportunity set of the target cell based on the extended time slot timing set corresponding to the target cell, including:

The terminal determines at least one candidate PDSCH reception slot position based on the extended slot timing set corresponding to the target cell and the time domain position of the HARQ ACK feedback slot unit;

The terminal excludes candidate PDSCH reception opportunities that conflict with the uplink symbols configured by the network side device at each of the candidate PDSCH reception slot positions. The candidate PDSCH reception opportunities correspond to a SLIV in the target table, and determine that each A set of candidate PDSCH reception opportunities within the PDSCH reception slot position.
The HARQ ACK codebook feedback method according to claim 12, wherein the terminal excludes candidate PDSCH reception opportunities that conflict with uplink symbols configured by the network side device at each candidate PDSCH reception slot position, and determines the The set of candidate PDSCH reception opportunities within each PDSCH reception slot position includes:

In the case where at least one of the candidate PDSCH reception opportunities conflicts with an uplink symbol, the terminal excludes other SLIVs jointly encoded with the target SLIV in the target table; the candidate PDSCH reception opportunities correspond to the target SLIV.
The HARQ ACK codebook feedback method according to claim 1, wherein the time slot timing set corresponding to the HARQ ACK feedback time slot unit includes the time slot timing corresponding to the PDSCH of each cell indicated by the network side device.
A hybrid automatic retransmission confirmation HARQ ACK codebook feedback device, including:

The first determination module is configured to determine the set of candidate physical downlink shared channel PDSCH reception opportunities of the target cell based on the time slot sequence set corresponding to the HARQ ACK feedback time slot unit; wherein, The target cell includes any one of at least two cells scheduled by the target downlink control information DCI, and each cell includes at least one PDSCH;

The second determination module is configured to determine the HARQ ACK codebook of the target cell based on the set of candidate PDSCH reception opportunities.
A terminal includes a processor and a memory, the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the implementation of any one of claims 1 to 14 is achieved. The steps of the HARQ ACK codebook feedback method described above.
A readable storage medium storing programs or instructions on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the HARQ ACK codebook feedback method as described in any one of claims 1 to 14 are implemented. .