CN116964973A

CN116964973A - Method, device and equipment for determining hybrid automatic repeat feedback codebook

Info

Publication number: CN116964973A
Application number: CN202180095036.0A
Authority: CN
Inventors: 张轶
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2023-10-27
Also published as: WO2022246825A1

Abstract

The embodiment of the application provides a method and a device for determining a HARQ feedback codebook, terminal equipment and network equipment, wherein the method comprises the following steps: the terminal equipment receives first downlink control information DCI; the first DCI carries a first downlink allocation index DAI; wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current physical downlink control channel PDCCH monitors the opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI; the at least one target DCI comprises DCI which is transmitted by the network equipment and used for scheduling a plurality of downlink information until the current service cell in the current PDCCH monitoring opportunity; the terminal equipment determines a first HARQ feedback codebook based on the first DAI.

Description

Method, device and equipment for determining hybrid automatic repeat feedback codebook

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to a method, a device and equipment for determining a hybrid automatic retransmission feedback codebook.

Background

In order to improve spectrum efficiency while ensuring a smooth transition from the 4th generation mobile communication network (the 4th generation mobile communication technology,4G) to the 5th generation mobile communication network (the 5th generation mobile communication technology,5G), the third generation partnership project (3rd Generation Partnership Project,3GPP) has proposed a dynamic spectrum sharing (Dynamic Spectrum Sharing, DSS) technique between a long term evolution (Long Term Evolution, LTE) system and a New air interface (NR) system. DSS refers to the dynamic and flexible allocation of spectrum resources for LTE and NR systems within the same frequency band.

In practical applications, in order to avoid interference of the NR system to the LTE system, in the spectrum resources shared by LTE and NR, the NR transmission cannot use the resources of the LTE cell reference signal (Cell Reference Signal, CRS) and the LTE physical downlink control CHannel (Physical Downlink Control chnnel, PDCCH). Thus, in DSS, the capacity of NR PDCCH will be affected.

In order to solve the problem of limited resource usage of PDCCH in DSS, multiple downlink information is scheduled in Release 17 (Release 17, R17) of NR in support of one downlink control information (Downlink Control Information, DCI), where the multiple downlink information are located in different serving cells (may also be referred to as carriers). For example, one DCI transmitted in a Primary Cell (PCell) or a Secondary Cell (SCell) may schedule a Physical Downlink Shared CHannel (PDSCH) of the PCell and a PDSCH of the SCell at the same time. However, in the scenario of multiple downlink information scheduled by the same DCI, there is no clear method how to determine a Hybrid Automatic Retransmission (HARQ) feedback codebook corresponding to multiple downlink information.

Disclosure of Invention

The embodiment of the application provides a method, a device and equipment for determining an HARQ feedback codebook, which are used for solving the problem that the HARQ feedback codebook cannot be determined when one DCI schedules a plurality of downlink information.

In a first aspect, an embodiment of the present application provides a method for determining an HARQ feedback codebook, including:

the terminal equipment receives first DCI; the first DCI carries a first downlink allocation index (Downlink Assignment Index, DAI);

wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current PDCCH monitoring opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI; the at least one target DCI comprises DCI which is transmitted by the network equipment and used for scheduling a plurality of downlink information until the current service cell in the current PDCCH monitoring opportunity;

the terminal equipment determines a first HARQ feedback codebook based on the first DAI.

In a second aspect, an embodiment of the present application provides a method for determining an HARQ feedback codebook, including:

The network equipment sends first DCI; the first DCI carries a first DAI;

the network device determines a first HARQ feedback codebook based on the first DAI.

In a third aspect, an embodiment of the present application provides a device for determining an ARQ feedback codebook, which is applied to a terminal device, including:

a first communication interface configured to receive a first DCI; the first DCI carries a first DAI;

wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current PDCCH monitoring opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI; the at least one target DCI comprises a plurality of downlink information DCI which is transmitted by the network equipment and used for scheduling until the current service cell in the current PDCCH monitoring opportunity;

A first processing unit configured to determine a first HARQ feedback codebook based on the first DAI.

In a fourth aspect, an embodiment of the present application provides a device for determining an ARQ feedback codebook, which is applied to a network device, including:

a second communication interface configured to transmit the first DCI; the first DCI carries a first DAI;

and a second processing unit configured to determine a first HARQ feedback codebook based on the first DAI.

In a fifth aspect, an embodiment of the present application provides a terminal device, including: the method comprises the steps of calling and running the computer program stored in the memory, and executing the method for determining the HARQ feedback codebook according to the first aspect.

In a sixth aspect, an embodiment of the present application provides a network device, including: a processor and a memory, where the memory is configured to store a computer program, and the processor is configured to invoke and execute the computer program stored in the memory, and perform the method for determining the HARQ feedback codebook according to the second aspect.

The chip provided by the embodiment of the application is used for realizing the method for determining the HARQ feedback codebook.

Specifically, the chip includes: and a processor for calling and running the computer program from the memory, so that the device installed with the chip executes the method for determining the HARQ feedback codebook.

The computer readable storage medium provided by the embodiment of the application is used for storing a computer program, and the computer program enables a computer to execute the method for determining the HARQ feedback codebook.

The computer program product provided by the embodiment of the application comprises computer program instructions, wherein the computer program instructions enable a computer to execute the method for determining the HARQ feedback codebook.

The computer program provided by the embodiment of the application, when running on a computer, causes the computer to execute the method for determining the HARQ feedback codebook.

In the method for determining the HARQ feedback codebook provided by the embodiment of the application, terminal equipment receives first DCI; the first DCI carries a first DAI; wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current PDCCH monitoring opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI; at least one target DCI comprises DCI which is transmitted by the network equipment and used for scheduling a plurality of downlink information until a current service cell in a current PDCCH monitoring opportunity; the terminal device determines a first HARQ feedback codebook based on the first DAI. It can be seen that the first DAI carried in the first DCI may not only accumulate the number of downlink information scheduled by the DCI until the current PDCCH monitoring opportunity and the current serving cell are cut off, but also accumulate the number of downlink information associated with the target DCI for scheduling a plurality of downlink information. In this way, the first HARQ feedback codebook determined by the terminal device according to the value of the first DAI may include HARQ-ACK information corresponding to the plurality of downlink information scheduled by the at least one target DCI, so that efficiency of information transmission is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application;

fig. 2A is a schematic diagram of data transmission in the related art according to an embodiment of the present application;

fig. 2B is a schematic diagram of data transmission in the related art according to the embodiment of the present application;

fig. 3 is a flow chart of a method for determining a HARQ feedback codebook according to an embodiment of the present application;

fig. 4A is a schematic diagram of data transmission according to an embodiment of the present application;

fig. 4B is a schematic diagram of a second data transmission according to an embodiment of the present application;

fig. 5 is a third schematic diagram of data transmission according to an embodiment of the present application;

fig. 6 is a schematic diagram of data transmission according to an embodiment of the present application;

fig. 7 is a schematic diagram of data transmission according to an embodiment of the present application;

fig. 8 is a schematic diagram of the structural components of a determining device of an HARQ feedback codebook according to an embodiment of the present application;

fig. 9 is a schematic diagram ii of the structural composition of a determining device of an HARQ feedback codebook according to an embodiment of the present application;

Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application;

FIG. 11 is a schematic block diagram of a chip of an embodiment of the application;

fig. 12 is a schematic block diagram of a communication system provided in an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Fig. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

As shown in fig. 1, communication system 100 may include a terminal device 110 and a network device 120. Network device 120 may communicate with terminal device 110 over the air interface. Multi-service transmission is supported between terminal device 110 and network device 120.

It should be understood that embodiments of the present application are illustrated by way of example only with respect to communication system 100, and embodiments of the present application are not limited thereto. That is, the technical solution of the embodiment of the present application may be applied to various communication systems, for example: LTE system, LTE time division duplex (Time Division Duplex, TDD), universal mobile telecommunications system (Universal Mobile Telecommunication System, UMTS), internet of things (Internet of Things, ioT) system, narrowband internet of things (Narrow Band Internet of Things, NB-IoT) system, enhanced Machine-type-Type Communications, eMTC) system, 5G communication system (also referred to as New Radio (NR) communication system), or future communication system, etc.

In the communication system 100 shown in fig. 1, the network device 120 may be an access network device in communication with the terminal device 110. The access network device may provide communication coverage for a particular geographic area and may communicate with terminal devices 110 located within the coverage area.

The network device 120 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a next generation radio access network (Next Generation Radio Access Network, NG RAN) device, or a base station (gNB) in an NR system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device 120 may be a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN), etc.

Terminal device 110 may be any terminal device including, but not limited to, a terminal device that employs a wired or wireless connection with network device 120 or other terminal devices.

For example, the terminal device 110 may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, an IoT device, a satellite handset, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handset with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolution network, etc.

The terminal Device 110 may be used for Device-to-Device (D2D) communication.

The wireless communication system 100 may further comprise a core network device 130 in communication with the base station, which core network device 130 may be a 5G core,5gc device, e.g. an access and mobility management function (Access and Mobility Management Function, AMF), further e.g. an authentication server function (Authentication Server Function, AUSF), further e.g. a user plane function (User Plane Function, UPF), further e.g. a session management function (Session Management Function, SMF). Optionally, the core network device 130 may also be a packet core evolution (Evolved Packet Core, EPC) device of the LTE network, for example a session management function+a data gateway (Session Management Function + Core Packet Gateway, smf+pgw-C) device of the core network. It should be appreciated that SMF+PGW-C may perform the functions performed by both SMF and PGW-C. In the network evolution process, the core network device may also call other names, or form new network entities by dividing the functions of the core network, which is not limited in this embodiment of the present application.

Communication may also be achieved by establishing connections between various functional units in the communication system 100 through a next generation Network (NG) interface.

For example, the terminal device establishes an air interface connection with the access network device through an NR interface, and is used for transmitting user plane data and control plane signaling; the terminal equipment can establish control plane signaling connection with AMF through NG interface 1 (N1 for short); an access network device, such as a next generation radio access base station (gNB), can establish a user plane data connection with a UPF through an NG interface 3 (N3 for short); the access network equipment can establish control plane signaling connection with AMF through NG interface 2 (N2 for short); the UPF can establish control plane signaling connection with the SMF through an NG interface 4 (N4 for short); the UPF can interact user plane data with the data network through an NG interface 6 (N6 for short); the AMF may establish a control plane signaling connection with the SMF through NG interface 11 (N11 for short); the SMF may establish a control plane signaling connection with the PCF via NG interface 7 (N7 for short).

Fig. 1 exemplarily illustrates one base station, one core network device, and two terminal devices, alternatively, the wireless communication system 100 may include a plurality of base station devices and each base station may include other number of terminal devices within a coverage area, which is not limited by the embodiment of the present application.

It should be noted that fig. 1 is only an exemplary system to which the present application is applicable, and of course, the method shown in the embodiment of the present application may be applicable to other systems. Furthermore, the terms "system" and "network" are often used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship. It should also be understood that, in the embodiments of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B. It should also be understood that "corresponding" mentioned in the embodiments of the present application may mean that there is a direct correspondence or an indirect correspondence between the two, may mean that there is an association between the two, and may also be a relationship between an instruction and an indicated, configured, or the like. It should also be understood that "predefined" or "predefined rules" mentioned in the embodiments of the present application may be implemented by pre-storing corresponding codes, tables or other manners in which related information may be indicated in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation thereof. Such as predefined may refer to what is defined in the protocol. It should be further understood that, in the embodiment of the present application, the "protocol" may refer to a standard protocol in the field of communications, and may include, for example, an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited by the present application.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following description describes related technologies of the embodiments of the present application, and the following related technologies may be optionally combined with the technical solutions of the embodiments of the present application as alternatives, which all belong to the protection scope of the embodiments of the present application.

Before describing the present application, the following description will be made of relevant knowledge related to the present application.

HARQ feedback codebook: the terminal device may feed back the reception results of the plurality of downlink information transmitted by the network device, that is, HARQ acknowledgement (HARQ-ACK) information, to the network device in one uplink control information (Uplink Control Information, UCI). Wherein the downlink information may include one or more of the following information: PDSCH, semi-persistent scheduling (Semi-Persistent Scheduling, SPS) PDSCH release indication information, SCell sleep indication information. The embodiment of the present application is not limited thereto. The plurality of downlink information may be from different downlink time units and/or different codewords under MIMO and/or different carriers under carrier aggregation.

Currently, a communication system may support two different HARQ feedback codebooks, one is a semi-static HARQ feedback codebook (also referred to as a Type-1 HARQ-ACK feedback codebook) and the other is a dynamic HARQ feedback codebook (also referred to as a Type-2 HARQ-ACK feedback codebook).

The dynamic HARQ feedback codebook mainly reduces signaling overhead of feedback information, i.e., in the PDCCH monitoring opportunity set (The set of PDCCH monitoring occasions), the number of bits of positive/negative (ACK/NACK) information is determined according to the number of PDSCH actually scheduled by DCI, SPS PDSCH release indication, and SCell sleep indication.

In particular, to address the problem of DCI omission, the network device may configure one DAI information for each DCI.

In a scenario where the network device configures only 1 carrier to transmit downlink information, each DCI carries one DAI information, which may also be referred to as a count DCI (C-DAI).

For example, referring to fig. 2A, in a related art data transmission scheme 1, in the data transmission scenario, a network device configures one serving cell to transmit downlink information (i.e., serving cell 1 in fig. 2A) and a transmission manner based on transmission blocks (Transmission Block, TB), and each DCI schedules only 1 codebook. As shown in fig. 2A, the network device transmits DCI 1 to DCI 4 to the terminal device. The DCI 1 is used to schedule the PDSCH 1, and the value of the DAI corresponding to the DCI is 1.DCI 2 is used to schedule PDSCH 2, and the value of the corresponding DAI is 2.DCI 3 is used to schedule PDSCH 3, and its corresponding DAI has a value of 3.DCI 4 is used to schedule PDSCH 4, and its corresponding DAI has a value of 4. If the terminal device fails to check DCI 3 of the scheduled PDSCH 3, the terminal device does not receive the PDSCH 3. The terminal equipment receives DCI 4 of the scheduling PDSCH 4, and the value of the corresponding DAI is 4, so that the terminal equipment can judge that the PDSCH 3 is missed according to the received DCI 1, DCI 2 and the DCI value in the DCI 4, and then feed back 4-bit HARQ-ACK information to the network side.

In a scenario where a network device configures multiple carriers to transmit downlink information, the DAI may include a C-DAI and a Total DCI (T-DCI). The C-DAI represents the cumulative number of PDSCH, SPS PDSCH release indication information or SCell sleep indication information associated with DCI to the current serving cell and the current PDCCH monitoring opportunity. The T-DAI represents the cumulative number of DCI-associated PDSCH receptions, SPS PDSCH release information, or SCell sleep indication information on all serving cells to the current PDCCH monitoring opportunity.

Illustratively, the C-DAI contained in the DCI is 2 bits. The C-DAI configured by the network equipment is a cycle count value of 1-4, namely the value of the C-DAI is cycled between 1,2,3 and 4, the first occurrence of the 1 count is 1, and the second occurrence of the 1 count is 5. Based on this, the dynamic HARQ feedback codebook construction process is as follows:

firstly, initializing a first temporary value to 0; initializing j=0, where j represents the number of times the C-DAI reaches a maximum.

Secondly, traversing all PDCCH monitoring opportunities and serving cells in the order in which the index of the serving cell is increased and then the index of the PDCCH monitoring opportunities is increased.

Specifically, in the current PDCCH monitoring opportunity and the current serving cell, if the terminal device receives PDSCH or SPS PDSCH release information or SCell sleep indication information, then:

Judging the size relation between the C-DAI carried in the DCI and the first temporary value;

if the value of the C-DAI is smaller than or equal to the first temporary value, j+1 is added, and the first temporary value is updated to be the value of the C-DAI;

otherwise, the first temporary value is updated to be the value of the C-DAI.

If the maximum code word number that a DCI can schedule is 1, the terminal equipment fills the HARQ-ACK information of the data scheduled by the DCI on the bit of 4 x j+C-DAI-1 of the HARQ feedback codebook;

if the maximum code word number that can be scheduled by one DCI is 2 and the terminal equipment is configured with HARQ-ACK space binding, namely HARQ-ACK-SpatialBundling PUCCH, the terminal equipment fills the HARQ-ACK information logical AND values of two Tbs scheduled by the DCI in the current service cell on the bit of the 4 th xj+C-DAI-1;

if the maximum number of codewords that can be scheduled by one DCI is 2 and the terminal device is not configured with HARQ-ACK space bundling, the terminal device fills HARQ-ACK information of the first TB scheduled by the DCI in bits of 2x4xj+2 (C-DAI-1) and fills HARQ-ACK information of the second TB scheduled by the DCI in bits of 2x4xj+2 (C-DAI-1) +1.

Finally, the terminal device can determine the total bit number of the HARQ feedback codebook according to the value of the last DAI received in the PDCCH monitoring opportunity set, and record the total bit number as O ^ACK If the corresponding HARQ-ACK information is not filled in some bit positions of the HARQ feedback codebook in the above execution process, NACK is filled in the bit positions.

And supporting one DCI in R17 to schedule the downlink information transmitted in a plurality of service cells. Referring to fig. 2B, a related art data transmission diagram is shown, and a network device sends DCI 1 to DCI 4 to a terminal device. Wherein DCI 1 is used to schedule PDSCH 1 transmitted in serving cell 1.DCI 2 is used to schedule PDSCH 2 transmitted in serving cell 1, and the value of the corresponding DAI is 2.DCI 3 is used to schedule PDSCH 3 transmitted in serving cell 1 and PDSCH4 transmitted in serving cell 2.DCI 4 is used to schedule PDSCH 5 transmitted in serving cell 1.

In the related art, when the network device transmits both DCI for scheduling one downlink message and DCI for scheduling a plurality of downlink messages in the PDCCH monitoring opportunity set, if a certain DCI is missed, the terminal device cannot know whether the missed DCI schedules the DCI of one downlink message or the DCI of a plurality of downlink messages. Further, the terminal device cannot determine whether the corresponding location should contain 1-bit HARQ-ACK information or multiple-bit HARQ-ACK information, that is, whether the terminal device cannot distinguish whether the missed DCI 3 in fig. 2A and 2B is DCI for scheduling one downlink information or DCI for scheduling multiple downlink information. This will lead to the problem that the network device and the terminal device will not understand the information carried by the HARQ feedback codebook consistently. For example, in fig. 2A, the terminal device fails to detect DCI 3 for scheduling one PDSCH, so the HARQ feedback codebook constructed by the terminal device needs to include 4 bits of information; in fig. 2B, the terminal device does not detect DCI 3 for scheduling two PDSCH, so the HARQ feedback codebook constructed by the terminal device needs to include 5 bits of information.

Therefore, how to determine the HARQ feedback codebook is a technical problem to be solved by the present application when the DCI schedules downlink information in two or more serving cells, i.e., when one DCI schedules downlink information transmitted by a plurality of serving cells.

In order to solve the technical problems, the application provides a method, a device and equipment for determining a HARQ feedback codebook. In order to facilitate understanding of the technical solution of the embodiments of the present application, the technical solution of the present application is described in detail below through specific embodiments. The above related technologies may be optionally combined with the technical solutions of the embodiments of the present application, which all belong to the protection scope of the embodiments of the present application. Embodiments of the present application include at least some of the following.

Fig. 3 is a flowchart of a method for determining a HARQ feedback codebook according to an embodiment of the present application, as shown in fig. 3, where the method includes the following steps:

step 310, the network device sends a first DCI; the first DCI carries a first DAI,

step 320, the terminal equipment receives a first DCI; the first DCI carries a first DAI;

wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current PDCCH monitoring opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI; the at least one target DCI includes DCI transmitted by the network device to schedule a plurality of downlink information until a current serving cell in a current PDCCH monitoring opportunity.

Step 330, the terminal device determines a first HARQ feedback codebook based on the first DAI.

Step 340, the network device determines a first HARQ feedback codebook based on the first DAI.

In the embodiment of the present application, the first DCI bearer is transmitted in the PDCCH. Here, the terminal device may detect the first DCI transmitted by the network device in the PDCCH monitoring opportunity set. That is, the first DCI may be that the terminal device receives in any one PDCCH listening opportunity in the PDCCH monitoring opportunity set.

In some embodiments, the first DCI may be DCI for scheduling one downlink information, or may be DCI for scheduling a plurality of downlink information, which is not limited in the embodiments of the present application.

In the embodiment of the present application, the first DCI may carry the first DAI. The first DAI is used for accumulating the number of downlink information transmitted in the PDCCH monitoring opportunity set.

In some embodiments, the first DAI may be a counter-type DAI, i.e., a C-DAI.

In some embodiments, the value of the first DAI may be a first cumulative number, or a sum of the first cumulative number and the first adjustment amount.

The first accumulated number is the accumulated number of downlink information associated with DCI transmitted by the network device until the current PDCCH monitors the opportunity and the current service cell.

Here, the current PDCCH monitoring opportunity refers to a PDCCH monitoring opportunity for receiving the first DCI. The current serving cell refers to a serving cell transmitting the first DCI.

It can be understood that the first cumulative number is the cumulative number of downlink information scheduled by all DCIs transmitted by the network device in the PDCCH monitoring opportunity set according to the order of increasing the index value of the serving cell and then increasing the index value of the PDCCH monitoring opportunity until the PDCCH monitoring opportunity of the first DCI is currently transmitted and the serving cell of the first DCI is currently transmitted.

In some embodiments, the first adjustment amount may be related to downlink information associated with at least one target DCI; at least one target DCI is included in a PDCCH monitoring opportunity set currently transmitting a first DCI, and up to a current serving cell, all DCIs transmitted by a network device for scheduling a plurality of downlink information.

That is, the target DCI refers to DCI for scheduling a plurality of downlink information.

The at least one target DCI may or may not include the first DCI. If the first DCI can schedule a plurality of downlink information, at least one target DCI includes the first DCI. If the first DCI only schedules one piece of downlink information, the first DCI is not included in at least one target DCI.

It may be appreciated that the first adjustment amount may be determined according to the number of downlink information associated with the at least one target DCI. That is, the first adjustment amount may count a plurality of downlink information scheduled by the target DCI, so as to ensure that the terminal device and the network device understand and agree with each other about the number of the scheduled downlink information.

In some embodiments, the downstream information may include at least one of the following:

PDSCH, SPS PDSCH release indication information, SCell sleep indication information.

Further, the terminal device may determine, according to the first DAI, a bit position of HARQ-ACK information corresponding to downlink information scheduled by the first DCI in the first HARQ feedback codebook, and fill the determined bit position with the HARQ-ACK information corresponding to the downlink information scheduled by the first DCI.

And the network device may determine, according to the first DAI, which bits of the first HARQ feedback code are located in HARQ-ACK information corresponding to the downlink information scheduled by the first DCI.

It should be noted that, the first HARQ feedback codebook is a dynamic HARQ feedback codebook, i.e., a Type-2 HARQ-ACK feedback codebook.

Optionally, the method provided by the embodiment of the present application may further include steps 350 and 360.

Step 350, the terminal device sends the first HARQ feedback codebook to the network device.

Step 360, the network device receives the first HARQ feedback codebook sent by the terminal device.

In this way, the network device may determine, according to the information included in the first HARQ feedback codebook, a reception result of the downlink information transmitted in the PDCCH monitoring opportunity set, and perform corresponding processing.

Therefore, the first DAI carried in the first DCI may not only accumulate the number of downlink information scheduled by the DCI until the current PDCCH monitoring opportunity and the current serving cell are cut off, but also accumulate the number of downlink information associated with the target DCI for scheduling a plurality of downlink information. In this way, the first HARQ feedback codebook determined by the terminal device according to the value of the first DAI may include HARQ-ACK information corresponding to the plurality of downlink information scheduled by the at least one target DCI, so that efficiency of information transmission is improved. .

In some embodiments, if, in the current PDCCH monitoring opportunity, at least one target DCI transmitted by the network device exists until the current serving cell, and a serving cell having an index value greater than that of the current serving cell exists in the serving cell where the plurality of downlink information scheduled by the at least one target DCI is located, the value of the first DAI is a sum of the first cumulative number and the first adjustment amount.

It may be understood that, in the PDCCH monitoring opportunity of the current transmission of the first DCI, the current serving cell is traversed according to the order of increasing the index value of the serving cell, and if there is at least one target DCI (i.e. DCI scheduling a plurality of downlink information) transmitted by the network device, and the current serving cell is not the serving cell with the largest index value where the downlink information scheduled by the at least one target DCI is located, the value of the first DAI is the sum of the first cumulative number and the first adjustment amount.

In some embodiments, the first adjustment amount is the number of downlink information of a serving cell having an index value greater than that of the current serving cell, among the serving cells where the plurality of downlink information scheduled by the at least one target DCI are located.

It may be understood that, if the network device may transmit multiple DCIs in one PDCCH monitoring opportunity, and the multiple DCIs transmitted by the network device include at least one target DCI (i.e. DCI for scheduling multiple downlink information), the first adjustment amount may be the number of all downlink information transmitted on a serving cell where the multiple downlink information scheduled by the at least one target DCI is located, where the index value is greater than the index value of the current serving cell.

In some embodiments, if there is no downlink information of a serving cell having an index value greater than that of the current serving cell until the current serving cell in the current PDCCH monitoring opportunity, the value of the first DAI is the first cumulative number.

In the present PDCCH monitoring opportunity, until the present serving cell, there is no downlink information of the serving cell having an index value greater than that of the present serving cell, which may include any one of the following cases:

in the current PDCCH monitoring opportunity, the network equipment does not transmit target DCI until the current serving cell;

in the current PDCCH monitoring opportunity, until the current serving cell, the network device transmits at least one target DCI, but the index values of the serving cells where the plurality of downlink information scheduled by the at least one target DCI are located are smaller than the index value of the current serving cell, that is, the serving cell where the current serving cell is the largest index value where the downlink information scheduled by the at least one target DCI is located.

In an example, referring to one data transmission diagram one shown in fig. 4A, the PDCCH monitoring opportunity set includes only one PDCCH monitoring opportunity. The network device may transmit downlink information in serving cell 1 through serving cell 4.

The network device may transmit DCI a through the serving cell 1, where the DCI a may schedule PDSCH 1 of the serving cell 1 and PDSCH 3 in the serving cell 3. The network device may transmit DCI b through serving cell 2, which may schedule PDSCH 2 of serving cell 2 and PDSCH 4 in serving cell 4.

Here, when the DAI corresponding to DCI a is determined, statistics may be performed in the order in which the index values of the serving cells are increased. In the current PDCCH monitoring opportunity, there is one DCI for scheduling a plurality of downlink information, i.e., DCI a, ending in serving cell 1. The serving cell with the largest index value of PDSCH scheduled by DCI a is serving cell 3, and its index value is greater than that of current serving cell 1. Therefore, the value of the DAI carried in the DCI a should be the first cumulative number+the first adjustment amount. The first cumulative number is 1, and the first adjustment amount is the number of downlink information of the serving cell 3, that is, the first adjustment amount is 1. Therefore, the DAI corresponding to DCI a has a value of 2.

Further, when determining the DAI corresponding to DCI b, it may be determined that, in the current PDCCH monitoring opportunity, there are two DCIs scheduling multiple downlink information, i.e., DCI a and DCI b, up to the current serving cell 2 transmitting DCI b. The serving cell with the largest index value of the PDSCHs scheduled by the DCI a and the DCI b is serving cell 4, and the index value is larger than the index value of the current serving cell 2. Therefore, the value of the DAI carried in the DCI b should be the first cumulative number+the first adjustment amount. The first cumulative number is the number of PDSCH transmitted by the serving cell 1 and the serving cell 2, that is, the first cumulative number is 2. The first adjustment amount is the number of PDSCH of the serving cell 3 and the serving cell 4, that is, the first adjustment amount is 2. Therefore, the DAI value corresponding to DCI b is 4.

In another example, referring to one data transmission diagram two shown in fig. 4B, the network device may transmit DCI a through the serving cell 1, and the DCI a may schedule PDSCH 1 of the serving cell 1 and PDSCH 3 in the serving cell 3. The network device may transmit DCI b through serving cell 2, which may schedule PDSCH 2 of serving cell 2. The network device may also transmit DCI c through serving cell 4, which may schedule PDSCH 4 of serving cell 4.

Here, when the DAI corresponding to DCI a is determined, statistics may be performed in the order in which the index values of the serving cells are increased. In the current PDCCH monitoring opportunity, there is one DCI for scheduling a plurality of downlink information, i.e., DCI a, ending in serving cell 1. The serving cell with the largest index value of PDSCH 3 scheduled by DCI a is serving cell 3, and its index value is greater than that of current serving cell 1. Therefore, the value of the DAI carried in the DCI a should be the first cumulative number+the first adjustment amount. The first cumulative number is 1, and the first adjustment amount is the number of downlink information of the serving cell 3, that is, the first adjustment amount is 1. Therefore, the DAI corresponding to DCI a has a value of 2.

When determining the DAI corresponding to DCI b, it may be determined that, in the current PDCCH monitoring opportunity, there is one DCI scheduling a plurality of downlink information, i.e., DCI a, until the current serving cell 2 transmitting DCI b. The serving cell with the largest index value of PDSCH scheduled by DCI a is serving cell 3, and its index value is greater than that of current serving cell 2. Therefore, the value of the DAI carried in the DCI b should be the first cumulative number+the first adjustment amount. The first cumulative number is 2, and the first adjustment amount is the number of downlink information of the serving cell 3, that is, the first adjustment amount is 1. Therefore, the DAI corresponding to DCI b takes a value of 3.

When determining the DAI corresponding to DCI c, it may be determined that, in the current PDCCH monitoring opportunity, there is one DCI scheduling a plurality of downlink information, i.e., DCI a, up to the current serving cell 4 transmitting DCI c. The serving cell with the largest index value of the PDSCH scheduled by DCI a is serving cell 3, and its index value is smaller than that of the current serving cell 4. Therefore, the value of the DAI carried in DCI c should be the first cumulative number. The first cumulative number is 4, i.e. the cumulative number of PDSCH transmitted in serving cell 1 to serving cell 4. Therefore, the DAI corresponding to DCI c has a value of 4.

In summary, in the feedback codebook determining method provided by the embodiment of the present application, the value of the first DAI does not change the counting essence of the downlink information, and only the accumulated number is corrected, so that the problem that the network device and the terminal device understand the HARQ-ACK bit number inconsistently due to DCI missed detection can be avoided.

In some embodiments, the format of the first DCI is a first DCI format; the first DCI format indicates that the first DCI is used for scheduling N pieces of downlink information; n is an integer greater than or equal to 2;

or,

the format of the first DCI is a second DCI format; the second DCI format indicates that the first DCI is used to schedule one downlink message.

It may be understood that the first DCI received by the terminal device may be DCI for scheduling one downlink information, or may be DCI for scheduling multiple downlink information.

In some implementations, the DCI currently transmitted may be indicated by a DCI format, whether the DCI schedules one downlink information or a DCI schedules a plurality of downlink information.

When the format of a certain DCI is the first DCI format, it is determined that the DCI is a DCI scheduling a plurality of downlink information. When the format of a certain DCI is a second DCI format, it is determined that the DCI is a DCI scheduling one downlink message. Here, the second DCI format may be any one of DCI format 1_0 (i.e., DCI format 1_0), DCI format 1_1, or DCI format 1_2, which is not limited in the embodiment of the present application.

In some embodiments, in a case where the first DCI is a first DCI format capable of scheduling a plurality of downlink information, the DAI values corresponding to the plurality of downlink information scheduled by the first DCI are the same, or the plurality of downlink information scheduled by the first DCI share the same DAI indication field.

Illustratively, referring to fig. 4A, DCI a schedules PDSCH 1 and PDSCH 3. Therefore, the DAI values corresponding to PDSCH 1 and PDSCH 3 are both 2.

In the embodiment of the application, a plurality of downlink information scheduled by the same DCI share the same DAI, so that DCI signaling overhead can be reduced.

In the embodiment of the present application, if the formats of DCI received by the terminal device are different, the manner of determining the HARQ feedback codebook of the DCI is different.

In some embodiments, if the first DCI is a second DCI format for scheduling one downlink message, the terminal device and the network device may determine a position of the downlink message scheduled by the first DCI in the first HARQ feedback codebook according to the above-described related art, and fill HARQ-ACK information corresponding to the downlink message in the determined position.

In some embodiments, if the first DCI is a first DCI format for scheduling N pieces of downlink information, the terminal device and the network device may construct a first HARQ feedback codebook including HARQ-ACK information corresponding to the N pieces of downlink information in the following two ways.

A mode one,

In case the terminal device satisfies the first condition, the terminal device determines the first HARQ feedback codebook based on the first DAI, which may be implemented by:

the terminal device is in the first HARQ feedback codebook (T _D * j+first DAI-N) to (T) _D * j+bits of the first DAI-1), filling HARQ-ACK information corresponding to N downlink information scheduled by the first DCI, respectively;

The arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located; t (T) _D And determining according to the bit number occupied by the first DAI in the first DCI, wherein j is the occurrence number of the DAI as the maximum value until the current PDCCH monitoring time and the current serving cell.

It may be understood that, according to the value of the first DAI, the terminal device may determine N bits in the first HARQ feedback codebook, and fill HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI, respectively.

The terminal device may fill the first HARQ feedback codebook with HARQ-ACK information corresponding to the N downlink information respectively according to the order of the index values of the serving cell where the N downlink information is located.

In the embodiment of the present application, in order to reduce signaling overhead of DCI, a DAI carried in the DCI may be a cycle count value. Namely the DAI has a value of 1-T _D And the cycle therebetween. Wherein T is _D Is 2 ^M M is the number of bits occupied by DAI in DCI.

In addition, j is the number of occurrences when the DAI value is the maximum value until the current PDCCH monitoring opportunity and the current serving cell, when the index value of the serving cell increases and then the index value of the PDCCH monitoring opportunity increases is counted. For example, it is assumed that the number of bits occupied by the DAI in the DCI is 2 bits, i.e., the value of the DAI carried in each DCI is cycled between 1 and 4. In the initial case, j takes a value of 0. The terminal can perform the first round of cycle counting, and the DAI values are 1, 2, 3 and 4 respectively. When detecting that the DAI has the maximum value of '4' for the first time, setting the value of j to be 1, and continuing the second round of cycle counting, wherein the values of the DAI are respectively 1, 2, 3 and 4. In the second round of cycle counting, "dai=1" (i.e., the second occurrence of "dai=1") indicates that the DAI has a value of 5 (i.e., 4×1+1), "dai=2" indicates that the DAI has a value of 6 (i.e., 4×1+2), "dai=3" indicates that the DAI has a value of 7 (4×1+3), and "dai=4" indicates that the DAI has a value of 8 (4×1+4). Further, when it is determined that the maximum value "4" occurs for the second time for the DAI, setting the value of j to 2, and continuing the third round of cycle counting until the DAI in the last DCI is counted. That is, j is the number of occurrences of the maximum value of DAI.

In some embodiments, the first condition may include at least one of:

the terminal equipment is configured with a first parameter, and the value of a second parameter configured on at least one serving cell in the serving cells where the N pieces of downlink information are located by the terminal equipment is 2;

the value of the second parameter configured on each service cell in the service cells where the N pieces of downlink information are located by the terminal equipment is 1;

wherein, the first parameter is used for enabling HARQ-ACK space binding, and the second parameter is used for indicating the maximum code word number that one DCI can schedule.

In one possible implementation, if the DCI transmitted in all serving cells schedules only 1 codeword, i.e. the terminal device receives one TB in all serving cells, the terminal device may send a first HARQ feedback codebook (T _D * j+first DAI-N) to (T) _D * j+the bits of the first DAI-1), and filling HARQ-ACK information corresponding to the N PDSCHs scheduled by the first DCI, respectively.

For example, if the first DCI schedules downlink information transmitted in two serving cells and the DCI transmitted in each serving cell schedules only 1 codeword, the terminal device may perform the processing in the (T) _D * j+the bit of the first DAI-2) is filled with HARQ-ACK information corresponding to the serving cell with the larger index value among the two serving cells. In addition, the terminal device may be set at (T) _D * j+the bit of the first DAI-1) is filled with HARQ-ACK information corresponding to the serving cell with the larger index value among the two serving cells.

In another possible implementation, if the terminal device is configured withHARQ-ACK space bundling (i.e., terminal device configured with HARQ-ACK-spatlbundlingpucch) and DCI for terminal device on at least one serving cell may schedule 2 codewords (i.e., terminal device configured to receive 2 TBs on at least one serving cell), then terminal device may be in the first HARQ feedback codebook (T _D * j+first DAI-N) to (T) _D * j+the bits of the first DAI-1), and filling HARQ-ACK information corresponding to the N PDSCHs scheduled by the first DCI, respectively.

Wherein, the HAQR-ACK information filled by each bit in the first HARQ feedback codebook is the HARQ-ACK information logic and processed value of two TB transmitted by each service cell.

For example, if the first DCI schedules downlink information transmitted in two serving cells and the DCI transmitted in all serving cells schedules 2 codewords at maximum, the terminal device may perform the scheduling in the (T) _D * j+the bit of the first DAI-2) is filled with the logical and value of the HARQ-ACK information of 2 TBs transmitted by the serving cell with the smaller index value. In addition, the terminal device may be set at (T) _D * j+the bit of the first DAI-1) is filled with the logical and value of the HARQ-ACK information of 2 TBs transmitted by the serving cell with the larger index value in the two serving cells.

In some embodiments, the first condition may include any one of the following conditions in addition to:

the terminal equipment is not configured with the first parameter, and the value of the configured second parameter on at least one serving cell in the serving cells where the N pieces of downlink information are located is 2.

That is, in any scenario where the terminal device is not configured with HARQ-ACK spatial bundling and the terminal device is configured with DCI on at least one serving cell for maximum scheduling of 2 codewords, the terminal device may be in the first HARQ feedback codebook (T _D * j+first DAI-N) to (T) _D * j+the bits of the first DAI-1), and filling HARQ-ACK information corresponding to the N PDSCHs scheduled by the first DCI, respectively.

In an example, referring to a data transmission diagram three shown in fig. 5, the network device may transmit downlink information to the terminal device in the serving cell 1 and the serving cell 2, and neither the serving cell 1 nor the serving cell 2 is configured for Code Block Group (CBG) based transmission. The PDCCH monitoring opportunity set includes a PDCCH monitoring opportunity 1 and a PDCCH monitoring opportunity 2. The network device may transmit DCI a in PDCCH monitoring opportunity 1 through serving cell 1, where DCI a is a second DCI format, and DCI a is used to schedule PDSCH 1. In PDCCH monitoring opportunity 1, DCI b is transmitted through serving cell 2, and DCI b is a second DCI format, DCI b being used to schedule PDSCH 2. In PDCCH monitoring opportunity 2, DCI c is transmitted through serving cell 1 and is the second DCI format, DCI b is used to schedule PDSCH 3. In PDCCH monitoring opportunity 2, DCI d is transmitted through serving cell 2, and DCI d is the first DCI format, and DCI d may schedule PDSCH 4 of serving cell 1 and PDSCH 5 transmitted by serving cell 2.

Dai=1 for DCI a, dai=2 for DCI b, dai=3 for DCI c, and dai=1 for DCI d because two downstream messages are scheduled.

In this way, the terminal device may determine that the first HARQ feedback codebook includes 5 bits according to the value of the DAI in the DCI d. The terminal device fills the HARQ-ACK information corresponding to PDSCH 1 scheduled by DCI a in the 0 th bit of the first HARQ feedback codebook, fills the HARQ-ACK information corresponding to PDSCH 2 scheduled by DCI b in the 1 st bit, fills the HARQ-ACK information corresponding to PDSCH 3 scheduled by DCI c in the 2 nd bit, fills the HARQ-ACK information corresponding to PDSCH 4 transmitted by PDSCH 1 scheduled by DCI d in the 3 rd bit, and fills the HARQ-ACK information corresponding to PDSCH 5 transmitted by PDSCH 2 scheduled by DCI d in the 4 th bit. In summary, the final first HARQ feedback codebook is: { ACK/NACK _{PDSCH 1} ，ACK/NACK _{PDSCH 2} ，ACK/NACK _{PDSCH 3} ，ACK/NACK _{PDSCH 4} ，ACK/NACK _{PDSCH 5} }。

In another example, referring to a data transmission diagram four shown in fig. 6, the network device may transmit downlink information to the terminal device in serving cell 1 and serving cell 2, and neither serving cell 1 nor serving cell 2 is configured for CBG-based transmission.

The PDCCH monitoring opportunity set includes PDCCH monitoring opportunities 1 to 4. The network device may transmit DCI a in PDCCH monitoring opportunity 1 through serving cell 1, where DCI a is a second DCI format, and DCI a is used to schedule PDSCH 1. In PDCCH monitoring opportunity 1, DCI b is transmitted through serving cell 2, and DCI b is a second DCI format, DCI b being used to schedule PDSCH 2. In PDCCH monitoring opportunity 2, DCI c is transmitted through serving cell 1 and is the second DCI format, DCI b is used to schedule PDSCH 3. In PDCCH monitoring opportunity 2, DCI d is transmitted through serving cell 2, and DCI d is the first DCI format, and DCI d may schedule PDSCH 4 of serving cell 1 and PDSCH 5 transmitted by serving cell 2. In PDCCH monitoring opportunity 3, DCI e is transmitted through serving cell 1, and is the first DCI format, which may schedule PDSCH 6 of serving cell 1 and PDSCH 7 transmitted by serving cell 2. In PDCCH monitoring opportunity 4, DCI f is transmitted through serving cell 2 and is the second DCI format, which may schedule PDSCH 8.

The network device may determine that dai=1 for DCI a, dai=2 for DCI b, dai=3 for DCI c, dai=1 for DCI d, dai=3 for DCI e, and dai=4 for DCI f according to the above method.

In the scenario shown in fig. 6, when the terminal device fails to detect DCI e, the terminal device may determine that the length of the first HARQ feedback codebook is 8 bits according to the DAI carried by DCI f transmitted in PDCCH monitoring occasion 4. The first HARQ feedback codebook may be: { ACK/NACK _{PDSCH 1} ，ACK/NACK _{PDSCH 2} ，ACK/NACK _{PDSCH 3} ，ACK/NACK _{PDSCH 4} ，ACK/NACK _{PDSCH 5} ，NACK，NACK，ACK/NACK _{PDSCH 8} }

It should be noted that, the terminal device may determine that two downlink information are missed according to the DAI information carried by the received DCI. However, whether the two downlink information are scheduled by one DCI or two DCIs respectively scheduled is transparent to the terminal device.

A second mode,

In case the terminal device satisfies the second condition, the terminal device determines the first HARQ feedback codebook based on the first DAI, which may be implemented by:

2*T th of terminal equipment in first HARQ feedback codebook _D * Bits j+2 (first DAI-N) to 2*T _D * j+2 (first DAI-N) +2*N-1 bits, filling HARQ-ACK information corresponding to N downlink information scheduled by the first DCI;

the arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located;

The second condition includes: the terminal device is not configured with the first parameter, and the value of the second parameter configured on at least one serving cell of the serving cells where the N PDSCH are located is 2.

That is, when the terminal device is not configured with HARQ-ACK spatial bundling (i.e., the terminal device is not configured with HARQ-ACK-spatialbindingpucch), and the DCI of the terminal device on at least one serving cell may schedule 2 codewords (i.e., the terminal device is configured to receive 2 TBs in at least one serving cell), the terminal device may determine 2*N bits in the first HARQ feedback codebook according to the value of the first DAI, and fill HARQ-ACK information corresponding to N downlink information scheduled by the first DCI, respectively, with each downlink information corresponding to 2 TBs.

The terminal device may fill the first HARQ feedback codebook with HARQ-ACK information corresponding to the N downlink information respectively according to the order of the index values of the serving cell where the N downlink information is located. And, the positions of the HARQ-ACK information corresponding to the plurality of TB transmitted by each serving cell are adjacent in the first HARQ feedback codebook.

For example, if the first DCI schedules downlink information transmitted in two serving cells and the DCI transmitted in a certain serving cell may schedule 2 codewords, the terminal device may perform a scheduling operation according to 2*T _D * Filling HARQ-ACK bit information corresponding to a first TB transmitted by a serving cell with a smaller index value in bits of j+2 (first DAI-2), at 2*T _D * Filling the bit of j+2 (first DAI-1) with the second T of the serving cell transmission with smaller index valueHARQ-ACK information for B. In addition, at 2*T _D * Filling the bit of j+2 (first DAI) with HARQ-ACK information of the first TB transmitted by the serving cell with larger index value, at 2*T _D * The bits of j+2 (first DAI) +1 are filled with HARQ-ACK information of the second TB transmitted by the serving cell with a larger index value.

For example, in the scenario shown in fig. 5, when the terminal device is configured with DCI in any one serving cell to schedule 2 codewords, the terminal device may determine that the length of the first HARQ feedback codebook is 10 bits, and the first HARQ feedback codebook is: { ACK/NACK _{PDSCH 1，TB1} ，ACK/NACK _{PDSCH 1，TB2} ，ACK/NACK _{PDSCH 2，TB1} ，ACK/NACK _{PDSCH 2，TB2} ，ACK/NACK _{PDSCH 3，TB1} ，ACK/NACK _{PDSCH 3，TB2} ，ACK/NACK _{PDSCH 4，TB1} ，ACK/NACK _{PDSCH 4，TB2} ，ACK/NACK _{PDSCH 5，TB1} ，ACK/NACK _{PDSCH 5，TB2} }。

In practical application, in the scenario that DCI is the cycle count, if the terminal device continuously fails to detect multiple DCIs, the number of bits of the first HARQ feedback codebook generated by the terminal device and the number of bits of the first HARQ feedback codebook expected to be generated by the network device will be inconsistent.

For example, referring to fig. 7, the network device may transmit downlink information to the terminal device in the serving cell 1 and the serving cell 2, and neither the serving cell 1 nor the serving cell 2 is configured for CBG-based transmission, and the terminal device supports a maximum of 1 codeword. The DAI is a cycle count and contains 2 bits, i.e., the maximum value of DAI is 4.

The PDCCH monitoring opportunity set includes PDCCH monitoring opportunities 1 to 4. The network device may transmit DCI a through serving cell 1 in PDCCH monitoring opportunity 1, where DCI a is a second DCI format for scheduling PDSCH 1. In PDCCH monitoring opportunity 1, the network device transmits DCI b through serving cell 2, where DCI b is a second DCI format used to schedule PDSCH 2.

In PDCCH monitoring opportunity 2, the network device transmits DCI c through serving cell 1, where DCI c is a second DCI format used for scheduling PDSCH 3. In PDCCH monitoring opportunity 2, DCI d is transmitted through serving cell 2, and DCI d is the first DCI format, which may schedule PDSCH 4 of serving cell 1 and PDSCH 5 of serving cell 2. The network device may also transmit DCI e over serving cell 1 in PDCCH monitoring opportunity 3, where DCI e is a second DCI format for scheduling PDSCH 6. In PDCCH monitoring opportunity 3, DCI f is transmitted through serving cell 2 and is the first DCI format for scheduling PDSCH 7 of serving cell 1 and PDSCH 8 of serving cell 2. In PDCCH monitoring opportunity 4, DCI g is transmitted through serving cell 2 and is a first DCI format for scheduling PDSCH 9 of serving cell 1 and PDSCH 10 of a second serving cell.

The network device may determine that dai=1 for DCI a, dai=2 for DCI b, dai=3 for DCI c, dai=1 for DCI d, dai=2 for DCI e, dai=4 for DCI f, and dai=2 for DCI g according to the above method.

In the scenario shown in fig. 7, if the terminal device fails to detect DCI e and DCI f transmitted in PDCCH monitoring opportunity 3, the terminal device determines that the length of the final HARQ feedback codebook is 6 bits according to the last DCI g. And the network device expects the HARQ feedback information generated by the terminal device to be 10 bits.

In view of the above problems, the method for determining the HARQ feedback codebook according to the embodiment of the present application may further include the following steps:

if the difference value of the first DAI minus the second DAI is smaller than N and the first DCI is in the first DCI format, the terminal equipment sets the value of j to be j+1;

wherein the second DAI is carried by the second DCI; the service cell where the downlink information scheduled by the second DCI is located comprises the service cell with the index value being a first index value, the first index value is smaller than the second index value, and the terminal equipment does not receive the downlink information on the service cell with the index value being larger than the first index value and smaller than the second index value;

the second index value is the minimum value in the index values corresponding to the serving cells where the N pieces of downlink information are located.

Here, the terminal device may also receive a second DCI in the PDCCH monitoring opportunity set. The second DCI includes a second DAI.

In some embodiments, the second DCI may be a first DCI format or a second DCI format; that is, the second DCI may schedule one downlink message or may schedule a plurality of downlink messages, which is not limited in the embodiment of the present application.

In some embodiments, the terminal device may receive the first DCI and the second DCI in the same PDCCH monitoring opportunity. In the same PDCCH monitoring opportunity, the terminal device may detect DCI in order of the serving cell from large to small.

If the terminal equipment detects that the downlink information scheduled by the second DCI includes a serving cell with an index value being a first index value, the first index value is smaller than the second index value, and the terminal equipment does not receive the downlink information on the serving cell between the index value being larger than the first index value and smaller than the second index value, the second DCI can be considered to be received before the first DCI.

If the terminal equipment detects that the serving cell in which the downlink information scheduled by the second DCI is located includes a serving cell with an index value being a first index value, the first index value is smaller than the minimum value of the index values of the serving cells in which the plurality of downlink information scheduled by the first DCI is located, and the terminal equipment does not receive the downlink information on the serving cell with the index value between the first index value and the minimum value of the index values of the serving cells, the second DCI can be considered to be received before the first DCI. In this scenario, the terminal device determines that it may be subject to a continuous miss.

When the second DCI is in the first DCI format, the first index value may be an index value of any one of the serving cells in which the plurality of downlink information scheduled by the second DCI is located. For example, the first index value may be a maximum index value in a plurality of serving cells, and the first index value may also be a minimum index value in a plurality of serving cells, which is not limited in the embodiment of the present application. In addition, when the second DCI is in the second DCI format, the first index value is the index value of the serving cell where the downlink information scheduled by the second DCI is located.

That is, if the terminal device detects that the index value of the serving cell where a certain downlink information scheduled by the second DCI is located is smaller than the minimum index value of N serving cells associated with the first DCI, and no downlink information is received in the serving cell between the index values of the two serving cells, it may be considered that the terminal device may have a continuous omission.

In this way, before filling the first HARQ feedback codebook with HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI, the terminal device may calculate a difference value of the first DCI minus the second DCI. If the difference is smaller than N and the first DCI is the first DCI format, the terminal device determines that the continuous missed detection condition has occurred, and at this time, the terminal device may set j=j+1. And filling HARQ-ACK information corresponding to the downlink information scheduled by the first DCI according to the adjusted j value.

In an example, if the terminal device receives the first DCI after the second DCI, and the first DCI schedules downlink information transmitted in two serving cells, the construction process of the first HARQ feedback codebook is as follows:

firstly, initializing a first temporary value to 0; initializing j=0, where j represents the number of times DAI reaches a maximum value.

Secondly, traversing all PDCCH monitoring opportunities and the serving cell according to the sequence that the index value of the serving cell is increased and then the index value of the PDCCH monitoring opportunity is increased.

Specifically, in the current PDCCH monitoring opportunity and the current serving cell, if the terminal device receives multiple downlink information scheduled by the first DCI, then:

judging the magnitude relation between the first DAI and the first temporary value;

if the value of the first DAI is smaller than or equal to the first temporary value, j+1 is added, and the first temporary value is updated to be the value of the first DAI;

if the difference of the value of the first DAI minus the first temporary value is 1, j+1 is added, and the value of the first temporary value is updated to be the value of the first DAI;

otherwise, the first temporary value is updated to be the value of the first DAI.

In one possible approachIn an implementation manner, after determining the value of j, the terminal device may, when the first condition is satisfied, perform a feedback operation on the first HARQ feedback codebook (T _D * j+the bit of the first DAI-2) fills HARQ-ACK information corresponding to downlink information transmitted by a serving cell with a smaller index value in the two serving cells. And, at (T) _D * j+the bit of the first DAI-1), filling HARQ-ACK information corresponding to downlink information transmitted by a serving cell with a smaller index value in the two serving cells.

In another possible implementation manner, after determining the value of j, the terminal device may, when the second condition is satisfied, in the first HARQ feedback codebook, be 2*T _D * j+2 bits (first DAI-2) to 2*T _D * j+2 (first DAI) +1 bits, and filling HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI.

In another example, in the scenario shown in fig. 7, the construction process of the first HARQ feedback codebook is as follows:

the terminal equipment firstly initializes a first temporary value to 0, and j=0;

the terminal device may receive DCI a, dai=1 of DCI a at PDCCH monitoring occasion 1 and serving cell 1. And if the terminal equipment determines that the current first temporary value is smaller than 1, updating the first temporary value to be 1. Based on the above, the terminal device fills the HARQ-ACK information corresponding to the downlink information scheduled by DCI a in the 0 th bit in the first HARQ feedback codebook.

Next, the terminal device receives DCI b at PDCCH monitoring occasion 1 and serving cell 2, the dai=2 of DCI b. And if the terminal equipment determines that the current first temporary value is smaller than 2, updating the first temporary value to be 2. And, the terminal equipment fills the HARQ-ACK information corresponding to the downlink information scheduled by DCI b in the bit 1 in the first HARQ feedback codebook.

Next, the terminal device may receive DCI c, dai=3 of DCI c at PDCCH monitoring occasion 2 and serving cell 1. And if the terminal equipment determines that the current first temporary value is smaller than 3, updating the first temporary value to be 3. And the terminal equipment fills the HARQ-ACK information corresponding to the downlink information scheduled by DCI c in the bit 2 in the first HARQ feedback codebook.

Further, the terminal device may receive DCI d, dai=1 of DCI d at PDCCH monitoring occasion 2 and serving cell 2. And when the current first temporary value is 3 and is greater than the value of DAI in DCI d, adjusting the value of j to be 1, and updating the first temporary value to be 1 by the terminal equipment.

Based on this, the terminal device fills the HARQ-ACK information corresponding to the downlink information in the serving cell 1 scheduled by DCI d in the bit (4×1+1-2) in the first HARQ feedback codebook, i.e. the bit 3, and fills the HARQ-ACK information corresponding to the downlink information in the serving cell 2 scheduled by DCI d in the bit (4×1+1-1), i.e. the bit 4.

Next, the terminal device receives DCI g at PDCCH monitoring occasion 4 and serving cell 2, the dai=2 of the DCI g. The current first temporary value is 1, which is smaller than the DAI value in DCI g. However, if the terminal device detects that the difference between the DAI of the DCI g and the DAI of the previous DCI d is 1 and the current DCI g is the first DCI format, the terminal device adjusts the value of j to 2 and updates the first temporary value to 2. In this way, the terminal device may fill the HARQ-ACK information corresponding to the downlink information in the serving cell 1 scheduled by the DCI g in the (4×2+2-2) th bit, that is, the 8 th bit, in the first HARQ feedback codebook, and fill the HARQ-ACK information corresponding to the downlink information in the serving cell 2 scheduled by the DCI g in the (4×2+2-1) th bit, that is, the 9 th bit.

Therefore, the method for determining the HARQ feedback codebook provided by the embodiment of the present application can avoid the problem that the number of bits contained in the HARQ feedback codebook generated by the terminal device due to continuous DCI missed detection is inconsistent with the number of bits contained in the HARQ feedback codebook expected to be generated by the network device.

The preferred embodiments of the present application have been described in detail above with reference to the accompanying drawings, but the present application is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present application within the scope of the technical concept of the present application, and all the simple modifications belong to the protection scope of the present application. For example, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further. As another example, any combination of the various embodiments of the present application may be made without departing from the spirit of the present application, which should also be regarded as the disclosure of the present application. For example, on the premise of no conflict, the embodiments described in the present application and/or technical features in the embodiments may be combined with any other embodiments in the prior art, and the technical solutions obtained after combination should also fall into the protection scope of the present application.

It should be further understood that, in the various method embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic of the processes, and should not constitute any limitation on the implementation process of the embodiments of the present application. Furthermore, in the embodiment of the present application, the terms "downstream", "upstream" and "sidestream" are used to indicate a transmission direction of signals or data, where "downstream" is used to indicate that the transmission direction of signals or data is a first direction from a station to a user equipment of a cell, and "upstream" is used to indicate that the transmission direction of signals or data is a second direction from the user equipment of the cell to the station, and "sidestream" is used to indicate that the transmission direction of signals or data is a third direction from the user equipment 1 to the user equipment 2. For example, "downstream signal" means that the transmission direction of the signal is the first direction. In addition, in the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which means that three relationships may exist. Specifically, a and/or B may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Fig. 8 is a schematic structural diagram of a determining apparatus for HARQ feedback codebook according to an embodiment of the present application, which is applied to a terminal device, as shown in fig. 8, and the determining apparatus 80 for HARQ feedback codebook includes:

a first communication interface 81 configured to receive first downlink control information DCI; the first DCI carries a first downlink allocation index DAI;

wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current physical downlink control channel PDCCH monitors the opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI; the at least one downlink information comprises DCI which is transmitted by the network equipment and used for scheduling a plurality of downlink information until a current service cell in the current PDCCH monitoring opportunity;

a first processing unit 82 is configured to determine a first HARQ feedback codebook based on the first DAI.

In some embodiments, the first adjustment amount is the number of downlink information of a serving cell having an index value greater than that of the current serving cell, where the plurality of downlink information scheduled by the at least one target DCI is located in the serving cell.

In some embodiments, if, in the current PDCCH monitoring opportunity, the at least one target DCI exists until the current serving cell, and a serving cell in which the plurality of downlink information scheduled by the at least one target DCI is located, there is a serving cell having an index value greater than an index value of the current serving cell, the value of the first DAI is a sum of the first cumulative number and the first adjustment amount.

In some embodiments, if in the current PDCCH monitoring opportunity, until the current serving cell, there is no downlink information of a serving cell having an index value greater than that of the current serving cell, the value of the first DAI is the first cumulative number.

In some embodiments, the format of the first DCI is a first DCI format; the first DCI format indicates that the first DCI is used to schedule N pieces of downlink information; n is an integer greater than or equal to 2;

or,

In some embodiments, the first DCI is a first DCI format; in case the terminal device fulfils a first condition, the first processing unit 82 is specifically configured to, in the first HARQ feedback codebook (T _D * j+first DAI-N) to (T) _D * j+bits of the first DAI-1), filling HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI respectively; the arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located;

wherein T is _D And determining that j is the occurrence number of which the DAI is the maximum value until the current PDCCH monitoring time and the current service cell according to the bit number occupied by the first DAI in the first DCI.

In some embodiments, the first condition includes at least one of:

the value of the second parameter configured on each serving cell in the serving cells where the N pieces of downlink information are located is 1;

the first parameter is used for enabling HARQ-ACK space bundling, and the second parameter is used for indicating the maximum number of codewords that one DCI can schedule.

In some embodiments, the first condition comprises any one of the following conditions:

The terminal equipment is not configured with a first parameter, and the value of a second parameter configured on at least one serving cell in the serving cells where the N pieces of downlink information are located is 2; the first parameter is used to enable HARQ-ACK spatial bundling, and the second parameter is used to indicate the maximum number of codewords that one DCI can schedule.

In some embodiments, the first DCI is a first DCI formatA formula (I); in case the terminal device fulfils the second condition, the first processing unit 82 is specifically configured to be 2*T in the first HARQ feedback codebook _D * Bits j+2 (first DAI-N) to 2*T _D * j+2 (first DAI-N) +2*N-1 bits, filling HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI respectively; the arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located;

wherein T is _D Determining, according to the number of bits occupied by the first DAI in the first DCI, that j is the number of occurrences when DAI is the maximum value until the current PDCCH monitoring occasion and the current serving cell; the second condition includes: the terminal equipment is not configured with the first parameter, and the value of the configured second parameter on at least one serving cell in the serving cells where the N pieces of downlink information are located is 2.

In some embodiments, the first processing unit 82 is further configured to set the value of j to j+1 if the difference of the first DAI minus the second DAI is less than N and the first DCI is the first DCI format;

wherein the second DAI is carried by a second DCI; the service cell where the downlink information scheduled by the second DCI is located includes a service cell with an index value being a first index value, the first index value is smaller than a second index value, and the terminal equipment does not receive the downlink information on the service cell with the index value being larger than the first index value and smaller than the second index value;

and the second index value is the minimum value in the index values of the service cells corresponding to the service cells where the N pieces of downlink information are located.

Fig. 9 is a schematic diagram ii of the structural composition of the determining device of the HARQ feedback codebook provided in the embodiment of the present application, which is applied to a network device, as shown in fig. 9, where the determining device 90 of the HARQ feedback codebook includes:

a second communication interface 91 configured to send first downlink control information DCI by the network device; the first DCI carries a first downlink allocation index DAI;

wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current physical downlink control channel PDCCH monitors the opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI; the at least one target DCI comprises DCI which is transmitted by the network equipment and used for scheduling a plurality of downlink information until a current service cell in the current PDCCH monitoring opportunity;

A second processing unit 92 is configured to determine a first HARQ feedback codebook based on the first DAI.

In some embodiments, the first adjustment amount is the number of downlink information of a serving cell having an index value larger than that of the current serving cell, where the plurality of downlink information scheduled by the at least one target DCI are located in the serving cell.

In some embodiments, if in the current PDCCH monitoring opportunity, until the current serving cell, there is the at least one target DCI, and there is a serving cell in which the plurality of downlink information scheduled by the at least one target DCI is located, and an index value is greater than an index value of the current serving cell, the value of the first DAI is a sum of the first cumulative number and the first adjustment amount.

Or,

In some embodiments, the determining device 90 of the HARQ feedback codebook further includes: a second communication interface 91;

in some embodiments, the first DCI is a first DCI format; in case the terminal device satisfies a first condition, in the first HARQ feedback codebook (T _D * j+first DAI-N) to (T) _D * j+bits of the first DAI-1), respectively filling HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI; the arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located;

wherein T is _D And determining, according to the number of bits occupied by the first DAI in the first DCI, that j is the number of occurrences when DAI is the maximum value until the current PDCCH monitoring opportunity and the current serving cell.

In some embodiments, the first condition includes at least one of:

The value of the second parameter configured by the terminal equipment on each service cell in the service cells where the N pieces of downlink information are located is 1;

In some embodiments, the first DCI is a first DCI format; 2*T in the first HARQ feedback codebook in case the terminal device fulfils a second condition _D * j+2 bits (first DAI-N) to 2*T _D * j+2 (first DAI-N) +2*N-1 bits, respectively filled with HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI; the arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located;

Wherein T is _D Determining, according to the number of bits occupied by the first DAI in the first DCI, that j is the number of occurrences when DAI is the maximum value until the current PDCCH monitoring occasion and the current serving cell; the second condition includes: the terminal device is not configured with the first parameter, and the value of the second parameter configured on at least one serving cell of the serving cells where the N PDSCH are located is 2.

In some embodiments, the second processing unit 92 is further configured to set the value of j to j+1 if the difference of the first DAI minus the second DAI is less than N and the first DCI is the first DCI format;

and the second index value is the minimum value in index values corresponding to the service cells where the N pieces of downlink information are located.

It should be understood by those skilled in the art that the description of the determination device of the HARQ feedback codebook according to the embodiment of the present application may be understood by referring to the description of the determination method of the HARQ feedback codebook according to the embodiment of the present application.

Fig. 10 is a schematic block diagram of a communication device 1000 according to an embodiment of the present application. The communication device may be a terminal device or a network device. The communication device 1000 shown in fig. 10 comprises a processor 1010, from which the processor 1010 may call and run a computer program to implement the method in an embodiment of the application.

Optionally, as shown in fig. 10, the communication device 1000 may also include a memory 1020. Wherein the processor 1010 may call and run a computer program from the memory 1020 to implement the methods in embodiments of the present application.

The memory 1020 may be a separate device from the processor 1010 or may be integrated into the processor 1010.

Optionally, as shown in fig. 10, the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, and in particular, may send information or data to other devices or receive information or data sent by other devices.

The transceiver 1030 may include, among other things, a transmitter and a receiver. The transceiver 1030 may further include an antenna, the number of which may be one or more.

Optionally, the communication device 1000 may be specifically a network device according to an embodiment of the present application, and the communication device 1000 may implement corresponding flows implemented by the network device in each method according to an embodiment of the present application, which are not described herein for brevity

It should be noted that, when the communication device 1000 is a network device according to an embodiment of the present application, the operations performed by the second processing unit 92 shown in fig. 9 may be implemented by the processor 1010 in the communication device 1000. The operations performed by the second communication interface 91 shown in fig. 9 may be implemented by the transceiver 1030 in the communication device 1000.

Optionally, the communication device 1000 may be specifically a mobile terminal/terminal device according to an embodiment of the present application, and the communication device 1000 may implement corresponding processes implemented by the mobile terminal/terminal device in each method according to the embodiment of the present application, which are not described herein for brevity.

It should be noted that, when the communication device 1000 is a mobile terminal/terminal device according to an embodiment of the present application, the operations performed by the first processing unit 82 shown in fig. 8 may be implemented by the processor 1010 in the communication device 1000. The operations performed by the first communication interface 81 shown in fig. 8 may be implemented by the transceiver 1030 in the communication device 1000.

Fig. 11 is a schematic structural view of a chip of an embodiment of the present application. The chip 1100 shown in fig. 11 includes a processor 1110, and the processor 1110 may call and run a computer program from a memory to implement the method in the embodiment of the present application.

Optionally, as shown in fig. 11, the chip 1100 may also include a memory 1120. Wherein the processor 1110 may call and run a computer program from the memory 1120 to implement the methods in embodiments of the present application.

Wherein the memory 1120 may be a separate device from the processor 1110 or may be integrated in the processor 1910.

Optionally, the chip 1100 may also include an input interface 1130. The processor 1110 may control the input interface 1130 to communicate with other devices or chips, and in particular, may obtain information or data sent by the other devices or chips.

Optionally, the chip 1100 may also include an output interface 1140. Wherein the processor 1110 may control the output interface 1140 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

Fig. 12 is a schematic block diagram of a communication system 1200 provided by an embodiment of the present application. As shown in fig. 12, the communication system 1200 includes a terminal device 1210 and a network device 1220.

The terminal device 1210 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1220 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is illustrative but not restrictive, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method for determining HARQ feedback codebook for hybrid automatic repeat request includes:

the terminal equipment receives first downlink control information DCI; the first DCI carries a first downlink allocation index DAI;

wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current physical downlink control channel PDCCH monitors the opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI, wherein the at least one target DCI comprises DCI which is transmitted by the network equipment and used for scheduling a plurality of downlink information until the current service cell in the current PDCCH monitoring opportunity;

the terminal equipment determines a first HARQ feedback codebook based on the first DAI.
The method of claim 1, wherein the first adjustment amount is a number of downlink information of a serving cell having an index value greater than an index value of the current serving cell among the plurality of downlink information scheduled by the at least one target DCI.
The method of claim 1 or 2, wherein if in the current PDCCH monitoring opportunity, until the current serving cell, there is the at least one target DCI, and there is a serving cell in which a plurality of downlink information scheduled by the at least one target DCI is located, an index value is greater than an index value of the current serving cell, the value of the first DAI is a sum of the first cumulative number and the first adjustment amount.
A method according to any of claims 1-3, wherein the value of the first DAI is the first accumulated number if there is no downlink information of a serving cell having an index value greater than the index value of the current serving cell until the current serving cell in the current PDCCH monitoring opportunity.
The method of any one of claims 1-4, wherein the format of the first DCI is a first DCI format; the first DCI format indicates that the first DCI is used to schedule N pieces of downlink information; n is an integer greater than or equal to 2;

Or,

the format of the first DCI is a second DCI format; the second DCI format indicates that the first DCI is used to schedule one downlink message.
The method of any one of claims 1-5, wherein the first DCI is a first DCI format; in the case that the terminal device meets a first condition, the terminal device determines a first HARQ feedback codebook based on the first DAI, including:

the terminal device is in the first HARQ feedback codebook (T _D * j+first DAI-N) to (T) _D * j+bits of the first DAI-1), filling HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI respectively; the arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located;

wherein T is _D And determining, according to the number of bits occupied by the first DAI in the first DCI, that j is the number of occurrences when DAI is the maximum value until the current PDCCH monitoring opportunity and the current serving cell.
The method of claim 6, wherein the first condition comprises at least one of:

the terminal equipment is configured with a first parameter, and the value of a second parameter configured on at least one serving cell in the serving cells where the N pieces of downlink information are located by the terminal equipment is 2;

The value of the second parameter configured on each serving cell in the serving cells where the N pieces of downlink information are located is 1;

the first parameter is used for enabling HARQ-ACK space bundling, and the second parameter is used for indicating the maximum number of codewords that one DCI can schedule.
The method of claim 6, wherein the first condition comprises any one of the following conditions except:

the terminal equipment is not configured with a first parameter, and the value of a second parameter configured on at least one serving cell in the serving cells where the N pieces of downlink information are located is 2;

the first parameter is used for enabling HARQ-ACK space bundling, and the second parameter is used for indicating the maximum number of codewords that one DCI can schedule.
The method of any one of claims 1-5, wherein the first DCI is a first DCI format; and under the condition that the terminal equipment meets a second condition, determining a first HARQ feedback codebook by the terminal equipment based on the first DAI, wherein the method comprises the following steps:

2*T th of the terminal device in the first HARQ feedback codebook _D * Bits j+2 (first DAI-N) to 2*T _D * j+2 (first DAI-N) +2*N-1 bits, filling HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI respectively; the arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located;

Wherein T is _D Determining, according to the number of bits occupied by the first DAI in the first DCI, that j is the number of occurrences when DAI is the maximum value until the current PDCCH monitoring occasion and the current serving cell; the second condition includes: the terminal equipment is not configured with the first parameter, and the value of the configured second parameter on at least one serving cell in the serving cells where the N pieces of downlink information are located is 2.
The method according to any one of claims 6-9, wherein the method further comprises:

if the difference value of the first DAI minus the second DAI is smaller than N and the first DCI is in a first DCI format, the terminal equipment sets the value of j to be j+1;

wherein the second DAI is carried by a second DCI; the service cell where the downlink information scheduled by the second DCI is located includes a service cell with an index value being a first index value, the first index value is smaller than a second index value, and the terminal equipment does not receive the downlink information on the service cell with the index value being larger than the first index value and smaller than the second index value;

and the second index value is the minimum value of index values of the service cells in the index values corresponding to the service cells where the N pieces of downlink information are located.
A method for determining HARQ feedback codebook for hybrid automatic repeat request is applied to network equipment and comprises the following steps:

the network equipment sends first downlink control information DCI; the first DCI carries a first downlink allocation index DAI;

wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current physical downlink control channel PDCCH monitors the opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI, wherein the at least one target DCI comprises DCI which is transmitted by the network equipment and used for scheduling a plurality of downlink information until the current service cell in the current PDCCH monitoring opportunity;

the network device determines a first HARQ feedback codebook based on the first DAI.
The method of claim 11, wherein the first adjustment amount is a number of downlink information of a serving cell having an index value greater than an index value of the current serving cell among the plurality of downlink information scheduled by the at least one target DCI.
The method of claim 11 or 12, wherein if in the current PDCCH monitoring opportunity, until the previous serving cell, there is the at least one target DCI, and there is a serving cell in which a plurality of downlink information scheduled by the at least one target DCI is located, an index value of which is greater than an index value of the current serving cell, the value of the first DAI is a sum of the first cumulative number and the first adjustment amount.
The method of claim 13, wherein the value of the first DAI is the first cumulative number if there is no downlink information for a serving cell having an index value greater than the index value of the current serving cell until the current serving cell in the current PDCCH monitoring opportunity.
The method of claim 14, wherein the format of the first DCI is a first DCI format; the first DCI format indicates that the first DCI is used to schedule N pieces of downlink information; n is an integer greater than or equal to 2;

or,

the format of the first DCI is a second DCI format; the second DCI format indicates that the first DCI is used to schedule one downlink message.
The method of claims 11-15, wherein the first DCI is a first DCI format; in case the terminal device satisfies a first condition, in the first HARQ feedback codebook (T _D * j+first DAI-N) to (T) _D * j+bits of the first DAI-1), respectively filling HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI; the arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located;

Wherein T is _D And determining, according to the number of bits occupied by the first DAI in the first DCI, that j is the number of occurrences when DAI is the maximum value until the current PDCCH monitoring opportunity and the current serving cell.
The method of claim 16, wherein the first condition comprises at least one of:

the terminal equipment is configured with a first parameter, and the value of a second parameter configured on at least one serving cell in the serving cells where the N pieces of downlink information are located by the terminal equipment is 2;

the value of the second parameter configured by the terminal equipment on each service cell in the service cells where the N pieces of downlink information are located is 1;

the first parameter is used for enabling HARQ-ACK space bundling, and the second parameter is used for indicating the maximum number of codewords that one DCI can schedule.
The method of claim 16, wherein the first condition comprises any condition other than:

the terminal equipment is not configured with a first parameter, and the value of a second parameter configured on at least one serving cell in the serving cells where the N pieces of downlink information are located is 2;

the first parameter is used for enabling HARQ-ACK space bundling, and the second parameter is used for indicating the maximum number of codewords that one DCI can schedule.
The method of any of claims 11-18, wherein the first DCI is a first DCI format;

2*T in the first HARQ feedback codebook in case the terminal device fulfils a second condition _D * j+2 bits (first DAI-N) to 2*T _D * j+2 (first DAI-N) +2*N-1 bits, which are HARQ-ACK information corresponding to the N downlink information scheduled by the first DCI; the arrangement sequence of the HARQ-ACK information corresponding to the N pieces of downlink information in the first HARQ feedback codebook is related to the index value of the serving cell where the N pieces of downlink information are located;

wherein T is _D Determining, according to the number of bits occupied by the first DAI in the first DCI, that j is the number of occurrences when DAI is the maximum value until the current PDCCH monitoring occasion and the current serving cell; the second condition includes: the terminal device is not configured with the first parameter, and the value of the second parameter configured on at least one serving cell of the serving cells where the N PDSCH are located is 2.
The method of any one of claims 16-19, wherein the method further comprises:

if the difference value of the first DAI minus the second DAI is smaller than N and the first DCI is in a first DCI format, the network equipment sets the value of j to be j+1;

Wherein the second DAI is carried by a second DCI; the service cell where the downlink information scheduled by the second DCI is located includes a service cell with an index value being a first index value, the first index value is smaller than a second index value, and the terminal equipment does not receive the downlink information on the service cell with the index value being larger than the first index value and smaller than the second index value;

and the second index value is the minimum value in index values corresponding to the service cells where the N pieces of downlink information are located.
A determining device of a hybrid automatic repeat request HARQ feedback codebook is applied to terminal equipment and comprises:

a first communication interface configured to receive first downlink control information DCI; the first DCI carries a first downlink allocation index DAI;

wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current physical downlink control channel PDCCH monitors the opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI; the at least one target DCI comprises DCI which is transmitted by the network equipment and used for scheduling a plurality of downlink information until the current service cell in the current PDCCH monitoring opportunity;

A first processing unit configured to determine a first HARQ feedback codebook based on the first DAI.
A determining device of a hybrid automatic repeat request HARQ feedback codebook is applied to network equipment and comprises:

a second communication interface configured to transmit first downlink control information DCI; the first DCI carries a first downlink allocation index DAI;

wherein, the value of the first DAI is a first accumulated number or the sum of the first accumulated number and a first adjustment amount; the first accumulated number is the accumulated number of downlink information associated with DCI until the current physical downlink control channel PDCCH monitors the opportunity and the current service cell; the first adjustment amount is related to downlink information associated with at least one target DCI; the at least one target DCI comprises DCI which is transmitted by the network equipment and used for scheduling a plurality of downlink information until the current service cell in the current PDCCH monitoring opportunity;

and a second processing unit configured to determine a first HARQ feedback codebook based on the first DAI.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method according to any of claims 1 to 10.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 11 to 20.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 10.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 11 to 20.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 10.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 11 to 20.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 10.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 11 to 20.
A computer program which causes a computer to perform the method of any one of claims 1 to 10.
A computer program which causes a computer to perform the method of any of claims 11 to 20.