CN112787769B

CN112787769B - Method, device, equipment and storage medium for determining NFI

Info

Publication number: CN112787769B
Application number: CN201911084325.1A
Authority: CN
Inventors: 曾超君; 李�根; 李娜
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-11-07
Filing date: 2019-11-07
Publication date: 2023-07-25
Anticipated expiration: 2039-11-07
Also published as: CN112787769A

Abstract

The invention discloses a method, a device, equipment and a storage medium for determining NFI. The method comprises the following steps: receiving first downlink control information DCI sent by network equipment; determining a New Feedback Indication (NFI) according to the first DCI; wherein the NFI is indicated by reinterpretating a first indication field in the first DCI; alternatively, NFI is implicitly indicated by the first DCI. The method solves the problem of how to enable the UE to determine the NFI value when the NFI is not explicitly indicated in the DCI in the prior art so as to ensure that the UE can normally communicate with the corresponding network equipment.

Description

Method, device, equipment and storage medium for determining NFI

Technical Field

The present invention belongs to the field of communication technologies, and in particular, to a method, an apparatus, a device, and a storage medium for determining NFI.

Background

In a communication system, before a terminal device communicates with a network device, the network device and the terminal device are required to negotiate configurations such as uploading of communication parameters, working modes and the like. Here, the network device selects rules according to some parameters, and generates downlink control information (Downlink Control Information, DCI) to be sent to the terminal device for use.

In the new air interface (new RAT, NR) of the fifth generation (the 5th generation,5G) mobile communication system or the Unlicensed communication system (NR-Unlicensed, NR-U) technology based on the NR technology, if the DCI does not indicate or determine the corresponding new feedback indication (New Feedback Indicator, NFI), it cannot be determined that each PDSCH packet needs to feedback the PDSCH range of the HARQ-ACK, so that the UE cannot accurately construct the HARQ-ACK dynamic codebook and transmit the HARQ-ACK dynamic codebook, and downlink data transmission cannot be performed normally.

Disclosure of Invention

The embodiment of the invention provides a method for determining NFI, terminal equipment, network equipment and a computer readable storage medium, which are used for solving the problem that in the prior art, when the NFI is not indicated in DCI, normal communication can not be performed between UE and the corresponding network equipment.

In order to solve the technical problems, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a method for determining an NFI, which is applied to a terminal device, where the method may include:

receiving first downlink control information DCI sent by network equipment;

determining a New Feedback Indication (NFI) according to the first DCI;

wherein the NFI is indicated by reinterpretating a first indication field in the first DCI; alternatively, NFI is implicitly indicated by the first DCI.

In a second aspect, an embodiment of the present invention provides a method for determining an NFI, applied to a network device, where the method may include:

transmitting first downlink control information DCI to terminal equipment;

the first DCI is used for indicating the terminal equipment to determine a new feedback indication NFI according to the first DCI; wherein the NFI is indicated by reinterpretating a first indication field in the first DCI; alternatively, NFI is implicitly indicated by the first DCI.

In a third aspect, an embodiment of the present invention provides a method for determining an NFI, which is applied to a terminal device, where the method may include:

Receiving data transmitted by a semi-persistent scheduling (SPS) Physical Downlink Shared Channel (PDSCH) sent by network equipment;

determining that a new feedback indication NFI corresponding to the SPS PDSCH is the NFI in the second latest DCI;

wherein, the PDSCH scheduled by the second DCI belongs to the same PDSCH packet as the SPS PDSCH.

In a fourth aspect, an embodiment of the present invention provides a method for determining an NFI, applied to a network device, where the method may include:

transmitting a semi-persistent scheduling (SPS) Physical Downlink Shared Channel (PDSCH) to a terminal device;

determining that the new feedback indication NFI corresponding to the SPS PDSCH is the NFI in the second latest DCI by the terminal equipment;

In a fifth aspect, this embodiment provides an apparatus for determining an NFI, which is applied to a terminal device, and the apparatus may include:

a transceiver module, configured to receive first downlink control information DCI sent by a network device;

a determining module, configured to determine a new feedback indication NFI according to the first DCI;

In a sixth aspect, an embodiment of the present invention provides an apparatus for determining an NFI, applied to a network device, where the apparatus may include:

A transceiver module, configured to send first downlink control information DCI to a terminal device;

In a seventh aspect, this embodiment provides an apparatus for determining an NFI, which is applied to a terminal device, and the apparatus may include:

the receiving and transmitting module is used for receiving data transmitted by a PDSCH (physical downlink shared channel) of the SPS sent by the network equipment;

a determining module, configured to determine that a new feedback indication NFI corresponding to the SPS PDSCH is an NFI in a second DCI that is the nearest;

In an eighth aspect, the present embodiment provides an apparatus for determining an NFI, which is applied to a network device, and the apparatus may include:

a transceiver module, configured to send a semi-persistent scheduling SPS physical downlink shared channel PDSCH to a terminal device to transmit data to the terminal device, so as to determine that a new feedback indication NFI corresponding to the SPS PDSCH is an NFI in a second DCI that is the nearest;

A ninth aspect provides a method for determining PDSCH packet trigger indication information, applied to a terminal device, the method comprising:

when HARQ-ACK independent transmission of SPS PDSCH,

the HARQ-ACK corresponding to the SPS PDSCH is fed back to the network device,

or,

and when the network configures the first parameter for the terminal equipment, feeding back an HARQ-ACK bit sequence corresponding to a second PDSCH packet to the network equipment, wherein the second PDSCH packet is a PDSCH packet to which the SPS PDSCH belongs.

In a tenth aspect, a method for determining PDSCH packet trigger indication information is provided, and is applied to a network device, where the method includes:

when HARQ-ACK independent transmission of SPS PDSCH,

receiving HARQ-ACK corresponding to SPS PDSCH fed back by the terminal equipment,

or,

and when the network configures the first parameter for the terminal equipment, receiving an HARQ-ACK bit sequence corresponding to a second PDSCH packet fed back by the terminal equipment, wherein the second PDSCH packet is a PDSCH packet to which an SPS PDSCH belongs.

An eleventh aspect provides an apparatus for determining PDSCH packet trigger indication information, applied to a terminal device, the apparatus comprising:

the first transceiver module is used for feeding back the HARQ-ACK corresponding to the SPS PDSCH to the network equipment when the HARQ-ACK of the SPS PDSCH is independently transmitted;

Or,

and the second transceiver module is used for feeding back an HARQ-ACK bit sequence corresponding to a second PDSCH packet to the network equipment when the network configures the first parameter for the terminal equipment, wherein the second PDSCH packet is a PDSCH packet to which the SPS PDSCH belongs.

A twelfth aspect provides an apparatus for determining PDSCH packet trigger instruction information, applied to a network device, and comprising:

the first transceiver module is used for receiving HARQ-ACK corresponding to the SPS PDSCH fed back by the terminal equipment when the HARQ-ACK of the SPS PDSCH is independently transmitted;

or,

and the second transceiver module is used for receiving an HARQ-ACK bit sequence corresponding to a second PDSCH packet fed back by the terminal equipment when the network configures the first parameter for the terminal equipment, wherein the second PDSCH packet is a PDSCH packet to which the SPS PDSCH belongs.

A thirteenth aspect provides a terminal device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the method of determining NFI as shown in the first, third or ninth aspects when the computer program is executed by the processor.

In a fourteenth aspect, there is provided a network device comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps in the method of determining NFI as shown in the second, fourth or tenth aspects when the computer program is executed by the processor.

A fifteenth aspect provides a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps in the method of determining NFI shown in the first aspect, the second aspect, the third aspect, the fourth aspect, the ninth aspect or the tenth aspect.

In the embodiment of the invention, according to first downlink control information DCI sent by receiving network equipment, determining a new feedback indication NFI, wherein the NFI can interpret a first indication field indication in the first DCI again; or, implicitly indicated by the first DCI. Compared with the prior art, the NFI of the embodiment of the present invention can reinterpretate the first indication field indication in the first DCI, or can also implicitly indicate the first DCI, so that the first DCI can not introduce a new indication field for enhancing the dynamic codebook to change the size of the DCI, saving DCI indication overhead, conforming to the principle that NR does not have a field for a configurable function in a fallback DCI format, and also enabling the UE to determine the NFI value, so as to ensure that the UE can accurately feed back the HARQ-ACK dynamic codebook to the network device corresponding to the UE, thereby ensuring normal downlink data transmission.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a schematic diagram of an architecture for determining NFI according to an embodiment of the present invention;

fig. 2 is a flowchart of a method for determining NFI based on a terminal device according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a redundancy version selection scheme according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of another redundancy version selection scheme according to an embodiment of the present invention;

fig. 5 is an example schematic diagram of an example of using NFI and PDSCH packet trigger indication information according to an embodiment of the present invention;

fig. 6 is a flowchart of a method for determining NFI based on network equipment according to an embodiment of the present invention;

fig. 7 is an interactive flowchart of a method for determining NFI according to an embodiment of the present invention;

fig. 8 is a schematic block diagram of an apparatus for determining NFI based on a terminal device according to an embodiment of the present invention;

Fig. 9 is a schematic block diagram of an apparatus for determining NFI based on a network device according to an embodiment of the present invention;

fig. 10 is a schematic hardware structure of a terminal device according to an embodiment of the present invention;

fig. 11 is a schematic hardware structure of a network device according to an embodiment of the present invention.

Detailed Description

Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by showing examples of the invention.

Aiming at the problems in the related art, the embodiment of the invention provides a method, a device, terminal equipment and a storage medium for determining NFI.

The method for determining NFI provided by the embodiment of the present invention can be at least applied to the following architecture, and the following description is made:

the architecture mainly comprises a network device 10 and a terminal device 20.

Wherein the network device 10 generates first downlink control information DCI (i.e., first DCI); next, a first DCI is issued to the terminal device 20, wherein the first DCI may indicate the new feedback indication NFI, e.g. by re-interpreting the first indication field indication NFI in the first DCI; alternatively, NFI is implicitly indicated by the first DCI. Next, the terminal device 20 receives the first DCI, and determines NFI according to the first DCI.

Here, it is to be noted that, when the NFI is indicated by multiplexing the first indication field in the first DCI, the first indication field may also be used to indicate other information than the NFI.

In this way, the terminal device determines a new feedback indication NFI according to the first downlink control information DCI sent by the receiving network device, where the NFI may reinterpretate the first indication field indication in the first DCI; or, implicitly indicated by the first DCI. Compared with the prior art, the NFI of the embodiment of the present invention can reinterpretate the first indication field indication in the first DCI, so that the first DCI is ensured not to introduce a new indication field for the enhanced dynamic codebook to change the size of the DCI; in addition, the NFI in the embodiment of the present invention may also be implicitly indicated by the first DCI, so that when the NFI is not indicated in the DCI, the UE and the network device corresponding to the UE may not perform normal communication.

It should be noted that, the method provided by the embodiment of the invention can be applied to the scene of NR-U dynamic codebook enhancement.

Based on the above architecture and application scenario, the method for determining NFI provided by the embodiment of the present invention is described in detail below.

Fig. 2 is a flowchart of a method for determining NFI based on a terminal device according to an embodiment of the present invention.

As shown in fig. 2, the method may specifically include steps 210-220, as follows:

in step 210, first downlink control information DCI sent by a network device is received.

Wherein the first DCI corresponds to a new feedback indication NFI. Here, it should be noted that, in the embodiment of the present invention, the first DCI may refer to a fallback downlink control information fallback DCI format, or DCI format 1_0.

In step 220, a new feedback indication NFI is determined according to the first DCI.

Here, in a case where the indication field is not newly added to the first DCI, the NFI corresponding to the first DCI is determined as follows:

mode one: the NFI is indicated by multiplexing an indication field of other information in the first DCI, the other information being information different from the NFI, i.e. the NFI is indicated by re-interpreting the first indication field in the first DCI.

Mode two: NFI is implicitly indicated by the first DCI, e.g., NFI is implicitly indicated by other information in the first DCI, or by other information related to the first DCI.

The two modes are respectively described:

first, referring to mode one, the NFI may be indicated by N indication bits of a first indication field; wherein N is an integer greater than or equal to 1. For example: it may be determined to use 1 indication bit or a plurality of indication bits in the first indication field according to the actual situation.

Here, the first indication field in the embodiment of the present invention may include a frequency domain resource allocation indication field or a redundancy version indication field.

Further, when the first indication field is a redundancy version indication field, the redundancy version indication field includes a first indication bit and a second indication bit; wherein the first indication bit is used for indicating the NFI, and the second indication bit is used for indicating the first redundancy version in the preset redundancy version candidate set.

For example: extracting 1 bit from the redundancy version indicating field, if the protocol commits or the higher layer configuration extracts a certain bit in the 2-bit redundancy version indicating field specified in NR Rel-15, such as the first bit or the second bit, the remaining single bit may be used to select a single redundancy version from the two redundancy versions that are alternative, and the correspondence between the value of the NR Rel-152-bit redundancy version indicating field and the redundancy version ID may be adjusted to the content shown in fig. 4.

Or when the first indication domain is the frequency domain resource allocation indication domain, the indication bit of the highest order in the frequency domain resource allocation indication domain is used for indicating the NFI. The most significant indication bit is also understood to be the first bit in the frequency domain resource allocation indication field.

Therefore, in the first mode, when the enhanced dynamic codebook is configured for the terminal equipment, the bit number of the first DCI is not changed relative to that of the first DCI when the enhanced dynamic codebook is not configured, and no extra signaling overhead is caused; the alignment of the number of bits for the first DCI does not have any additional effect.

Secondly, referring to mode two, NFI is implicitly indicated by the first DCI.

In the embodiment of the present invention, the implicit indication of the NFI by the first DCI may be that the NFI is determined by the NFI in the second DCI, where the physical downlink shared channel (Physical downlink shared channel, PDSCH) scheduled by the second DCI and the PDSCH scheduled by the first DCI belong to the same PDSCH packet. It should be noted that, in the embodiment of the present invention, the second DCI refers to a Non-fallback downlink control information Non-fallback DCI format; alternatively, DCI format 1_1.

Here, with this approach, the following possibilities may occur:

in one embodiment, the default value may be generally not considered, and each first DCI is considered to always find the corresponding nearest second DCI, but an undetectable situation may also occur, that is, when there is no nearest second DCI, it is determined that the NFI corresponding to the first DCI is a preset NFI.

For example: non-fallback DCI is adopted for scheduling at the beginning of a certain PDSCH packet to ensure the integrity of the enhanced dynamic codebook operation. However, when there is no recent Non-Fallback DCI, the NFI of this Fallback DCI may take a default value (e.g., 0) and assume that no flip is made.

In another example, when determining the nearest second DCI corresponding to the first DCI, the nearest second DCI may be: the starting time of the PDSCH detection opportunity corresponding to the second DCI is not later than the second DCI corresponding to the starting time of the PDSCH detection opportunity corresponding to the first DCI;

and/or, the index of the serving cell where the PDSCH transmission and/or the Semi-persistent scheduling (Semi-Persistent Scheduling, SPS) PDSCH release indication corresponding to the second DCI is not greater than the serving cell index corresponding to the first DCI.

For example: the latest Non-Fallback DCI means that the start time of the PDCCH detection opportunity corresponding to the Non-Fallback DCI is no later than the PDCCH detection opportunity corresponding to the Fallback DCI.

And/or starting time of the PDCCH detection opportunities corresponding to the two DCIs is equal, and the index of the service cell where the PDSCH transmission and/or SPSPDSCH release instruction corresponding to the Non-Fallback DCI is not greater than the index of the service cell where the PDSCH transmission and/or SPSPDSCH release instruction corresponding to the Fallback DCI is located.

In yet another example, the first DCI and the second DCI point to the same or different slots through a hybrid automatic repeat request acknowledgement (Hybrid automatic repeat request acknowledgement, HARQ-ACK) Timing indication field. Or the first DCI and the second DCI point to the same HARQ-ACK dynamic codebook transmission or different HARQ-ACK dynamic codebook transmissions through the HARQ-ACK Timing indication field.

For example: the most recent Non-Fallback DCI does not require that the PUCCH or codebook transmission within the same slot be directed to the same slot by the HARQ-ACK Timing indication field (i.e. the "PDSCH-to-harq_ feedback Timing indicator" indication field in DCI format 1_0/1_1), i.e. it can be understood that either the same slot or a different slot may be directed to.

In the case that the pointed slots are different, if the PUCCH or codebook transmission related to the PDSCH packet 0 in the PUCCH slot m indicated by a certain Non-Fallback DCI x fails, the PUCCH or codebook transmission indicated by a certain Fallback DCI y in the PUCCH slot n (the slot n is after the slot m, the slot n is later than the slot m) can carry all HARQ-ACKs to be transmitted (including retransmission) of the PDSCH packet 0, and if no other Non-Fallback DCI exists between the Non-Fallback DCI x and the Fallback DCI y, the Non-Fallback DCI x is the latest Non-Fallback DCI of the Fallback DCI y, and the NFI corresponding to the Fallback DCI follows the NFI indicated in the Non-Fallback DCI x.

Therefore, the NFI in the embodiment of the present invention may also determine the NFI through the implicit indication of the first DCI, so as to construct a hybrid automatic repeat request acknowledgement Codebook (Hybrid automatic repeat request acknowledgement, HARQ-ACK Codebook) of the DCI, and finally ensure that the terminal device can perform normal communication with its corresponding network device.

In addition, in the method for determining NFI provided in the embodiment of the present invention, PDSCH packet triggering indication information corresponding to the first DCI may be further included, and the method for determining PDSCH packet triggering indication information may be implemented separately or in combination with the method for determining NFI, which is not limited in the embodiment of the present invention. In this way, based on the first or second mode, the scheme including the PDSCH packet triggering instruction information provided in the embodiment of the present invention will be described in detail.

In some embodiments, the embodiment of the present invention further provides a method for determining PDSCH packet trigger indication information, including:

receiving first DCI;

when the first DCI has corresponding PDSCH grouping triggering indication information, the PDSCH grouping triggering indication information uses the PDSCH grouping triggering indication information in the second DCI which is nearest; the hybrid automatic repeat request acknowledgement (HARQ-ACK) corresponding to the first DCI and the HARQ-ACK corresponding to the nearest second DCI are carried in the same HARQ-ACK dynamic codebook transmission.

In one embodiment, the PDSCH scheduled by the second DCI may belong to the same PDSCH packet as the PDSCH scheduled by the first DCI. Here, there may be no limitation as to whether the same PDSCH packet is attributed.

In another embodiment, the PDSCH packet trigger indication information in the second DCI is used to determine a set of PDSCH packets of the second DCI trigger feedback HARQ-ACK;

wherein the PDSCH packet set of the second DCI triggered feedback HARQ-ACK includes: PDSCH packets to which PDSCH of the second DCI schedule belongs, and other PDSCH packets or sets of PDSCH packets explicitly triggered by the second DCI.

Based on this, the embodiment of the present invention further provides another possibility, that is, when the second DCI does not exist, it is determined that the PDSCH packet triggering indication information corresponding to the first DCI is preset PDSCH packet triggering indication information, that is, only the PDSCH packet corresponding to the scheduled PDSCH is triggered, or only the PDSCH packet 0 is triggered.

Here, in the scheme including the PDSCH packet triggering indication information, the first DCI and the second DCI point to the same time slot through the HARQ-ACK Timing indication field, or point to the same HARQ-ACK dynamic codebook transmission.

It should be noted that, when the multiple first DCIs or the multiple second DCIs point to the same time slot through the HARQ-ACK Timing indication field, HARQ-ACKs corresponding to PDSCH scheduled by these DCIs are transmitted in the same dynamic codebook in the time slot and are carried in the same PUCCH transmission, and when the PUCCH transmission and PUSCH transmission satisfy the time domain overlapping condition, the dynamic codebook is actually carried in PUSCH transmission.

Thus, the embodiment of the present invention provides an example of the usage of NFI and PDSCH packet trigger indication information, which can be specifically described with reference to fig. 5.

As shown in fig. 5, G indicates a PDSCH packet number, and takes a value of 0 or 1, for simplicity of illustration, only single carrier operation is considered in the embodiment of the present invention, so that only counter DAI exists (i.e., when UE configures only a single serving cell, downlink allocation indexes (Downlink assignment index, DAI) are only counted one by one for a single carrier according to the time sequence indicated by DCI, which may be referred to as counter DAI for short, and referred to as C-DAI for short); t indicates whether another PDSCH packet is triggered (0 indicates no trigger, 1 indicates a trigger).

The information directly indicated in the fallback DCI is marked by black characters, and the information used in the way is marked by gray characters. As can be seen from fig. 5, the Fallback DCI corresponding to D2 and D3 uses the NFI and PDSCH packet trigger indication in the Non-Fallback DCI corresponding to D1, and the Fallback DCI corresponding to D5 uses the NFI and PDSCH packet trigger indication in the Non-Fallback DCI corresponding to D4. Here, D1 and D4 (collectively referred to as Dx) may each refer to a group 0PDSCH transmission scheduled by Non-fallback DCI, D2, D3, and D5 (collectively referred to as Dy) may each refer to a PDSCH transmission scheduled by fallback DCI (i.e., necessarily belonging to group 0), and U1 and Um (collectively referred to as Ux) carry a PUCCH or HARQ-ACK dynamic codebook transmission of HARQ-ACK.

In addition, the second mode may also be applied to a scenario of data transmitted by Semi-persistent scheduling (Semi-Persistent Scheduling, SPS) PDSCH (SPS PDSCH transmission may be understood as PDSCH transmission initiated periodically after activating downlink SPS transmission, where the PDSCH transmission does not have a corresponding DCI indication), so that the embodiment of the present invention further provides a method for determining NFI, which is specifically as follows:

the terminal equipment receives a semi-persistent scheduling (SPS) Physical Downlink Shared Channel (PDSCH) sent by the network equipment, and determines that a New Feedback Indication (NFI) corresponding to the SPS PDSCH is the NFI in the nearest second DCI. That is, SPS PDSCH belongs to PDSCH packet 0, NFI in the most recent Non-fallback DCI that schedules PDSCH belonging to PDSCH packet 0 is also used. Wherein, the PDSCH scheduled by the second DCI belongs to the same PDSCH packet as the SPS PDSCH.

Here, the PDSCH and the SPS PDSCH of the second DCI schedule are assigned to PDSCH packet 0.

In addition, the embodiment of the invention also provides a method for determining the PDSCH grouping trigger indication information.

When the HARQ-ACK of the SPS PDSCH is independently transmitted, the HARQ-ACK corresponding to the SPS PDSCH is fed back to the network device (i.e., the transmission of the HARQ-ACK of the second PDSCH packet is not triggered).

It should be noted that the first parameter is not considered here. In addition, in the process of considering the first parameter, the following manner may be referred to:

when the network configures the first parameter for the terminal device, the network device feeds back the HARQ-ACK bit sequence corresponding to the second PDSCH packet (i.e., triggers transmission of HARQ-ACK of the second PDSCH packet). The second PDSCH packet is a PDSCH packet to which the SPS PDSCH belongs. Here, the first parameter may be a parameter SPS-PUCCH-AN-List. Or when the network does not configure the first parameter for the terminal equipment, feeding back HARQ-ACK corresponding to the SPS PDSCH to the network equipment.

Here, feeding back the HARQ-ACK bit sequence corresponding to the second PDSCH packet to the network device may be understood as triggering the transmission of the HARQ-ACK of the second PDSCH packet. At this time, the HARQ-ACK bit sequence for the second PDSCH packet is transmitted on the PUCCH resource configured for the SPS PDSCH, where the HARQ-ACK bit sequence includes the HARQ-ACK corresponding to the SPS PDSCH. Specifically used PUCCH resources are selected from a PUCCH resource list configured by the network for the UE based on the number of bits included in the HARQ-ACK bit sequence. The HARQ-ACK bit sequence of the second PDSCH packet includes all HARQ-ACKs to be transmitted corresponding to the second PDSCH packet, where the PDSCH set of the HARQ-ACKs to be transmitted is determined by the NFI of the second PDSCH packet.

It should be noted that, in the embodiment of the present invention, the independent transmission means that the new HARQ-ACK included in the HARQ-ACK dynamic codebook transmission in a certain uplink slot only corresponds to SPS PDSCH transmission. Illustrating: when only the HARQ-ACK for the SPS PDSCH is fed back in a certain PUCCH or a certain HARQ-ACK transmission in a certain uplink slot (i.e. no joint transmission of HARQ-ACKs for the dynamically scheduled PDSCH is involved at this time), if the parameter SPS-PUCCH-AN-List is not configured for the terminal device, the HARQ-ACK transmission of the SPS PDSCH does not trigger the PDSCH packet to which it belongs, i.e. the HARQ-ACK transmission of PDSCH packet 0.

Otherwise, if the parameter SPS-PUCCH-AN-List is configured for the terminal device, HARQ-ACK transmission of the SPS PDSCH may trigger HARQ-ACK transmission of the PDSCH packet to which the SPS PDSCH belongs (at this time, a certain PUCCH resource in the PUCCH resource List corresponding to the parameter SPS-PUCCH-AN-List is selected according to the number of HARQ-ACK bits to be transmitted).

In summary, after the first or second mode is applied and the scheme including the PDSCH packet triggering indication information corresponding to the first DCI, the method may further include:

determining an HARQ-ACK bit sequence of a dynamic codebook based on the PDSCH packet trigger indication information corresponding to the last DCI corresponding to the HARQ-ACK carried in the dynamic codebook transmission, and the NFI corresponding to the last DCI corresponding to each triggered PDSCH packet; wherein the last DCI is the first DCI or the second DCI. Here, the PDSCH packet trigger instruction information corresponding to the last DCI may be directly indicated in the second DCI, or may be determined based on the above-described scheme of PDSCH packet trigger instruction information corresponding to the first DCI.

For example: the terminal device constructs an HARQ-ACK Codebook based on the last DCI (which may be DL fallback DCI or DL non-fallback DCI) indication corresponding to the HARQ-ACK carried in the same PUCCH or Codebook transmission or the NFI and PDSCH packet trigger indication that is used and the DAI in this DCI. Specifically, as shown in fig. 5, when the terminal device organizes the HARQ-ACK Codebook carried in U2, the HARQ-ACK Codebook is constructed based on the C-DAI indicated in the Fallback DCI scheduling D5 transmission, the predefined scheduled PDSCH packet, and the NFI and PDSCH packet trigger indication that is used.

Determining a new feedback indication NFI according to first downlink control information DCI sent by the receiving network device, wherein the NFI may reinterpretate a first indication field indication in the first DCI; or, implicitly indicated by the first DCI. Compared with the prior art, the NFI of the embodiment of the present invention can reinterpretate the first indication field indication in the first DCI, or can also implicitly indicate the first DCI, so that the first DCI can not introduce a new indication field for enhancing the dynamic codebook to change the size of the DCI, saving DCI indication overhead, conforming to the principle that NR does not have a field for a configurable function in a fallback DCI format, and also enabling the UE to determine the NFI value, so as to ensure that the UE can accurately feed back the HARQ-ACK dynamic codebook to the network device corresponding to the UE, thereby ensuring normal downlink data transmission.

Based on the method for determining NFI based on terminal equipment shown in fig. 2-5, the embodiment of the present invention further provides a method for determining NFI based on network equipment, which is described in detail below.

Fig. 6 is a flowchart of a method for determining NFI based on network equipment according to an embodiment of the present invention.

As shown in fig. 6, the method includes steps 610-620, which are specifically described as follows:

in step 610, first downlink control information DCI is generated.

Here, the first DCI is a fallback downlink control information fallback DCI format; alternatively, DCI format 1_0. The first DCI is used for indicating the terminal equipment to determine a new feedback indication NFI according to the first DCI; wherein the NFI is indicated by reinterpretating a first indication field in the first DCI; alternatively, NFI is implicitly indicated by the first DCI.

The embodiment of the invention provides two modes, wherein the NFI is indicated in the first DCI, and the two modes are specifically shown as follows:

mode one: the NFI is indicated by reinterpretating the first indication field in the first DCI.

Mode two: NFI is implicitly indicated by the first DCI.

The two modes are respectively described:

first, referring to mode one, the NFI is indicated by N indication bits of a first indication field; wherein N is an integer greater than or equal to 1.

Here, in the embodiment of the present invention, the first indication field includes: the frequency domain resource allocation indicates a domain or the redundancy version indicates a domain.

Further, when the first indication field is a redundancy version indication field, the redundancy version indication field includes a first indication bit and a second indication bit; wherein the first indication bit is used for indicating the NFI, and the second indication bit is used for indicating the first redundancy version in the preset redundancy version candidate set. Or when the first indication domain is the frequency domain resource allocation indication domain, the indication bit of the highest order in the frequency domain resource allocation indication domain is used for indicating the NFI.

Secondly, the second aspect is: in case the NFI is implicitly indicated by the first DCI, the NFI is determined by the NFI in the nearest second DCI, the physical downlink shared channel PDSCH scheduled by the second DCI being assigned to the same PDSCH packet as the PDSCH scheduled by the first DCI.

The second DCI in the embodiment of the invention is a Non-fallback downlink control information (Non-fallback) DCI format; alternatively, DCI format 1_1.

In one embodiment, the start time of the PDSCH detection opportunity corresponding to the second DCI is no later than the start time of the PDSCH detection opportunity corresponding to the first DCI.

In another example, the first DCI corresponds to PDSCH packet trigger indication information; wherein, the PDSCH packet triggering indication information is along with the PDSCH packet triggering indication information in the second most recent DCI.

The hybrid automatic repeat request acknowledgement (HARQ-ACK) corresponding to the first DCI and the HARQ-ACK corresponding to the nearest second DCI are carried in the same HARQ-ACK dynamic codebook transmission.

Here, the PDSCH of the second DCI schedule and the PDSCH of the first DCI schedule may be assigned to the same PDSCH packet.

In addition, when the second DCI does not exist, determining that the PDSCH grouping trigger indication information corresponding to the first DCI is preset PDSCH grouping trigger indication information.

Step 620, sending DCI to the terminal device.

The first DCI is used for indicating the terminal equipment to determine a new feedback indication NFI according to the first DCI; wherein the NFI is indicated by way one in step 610 or by way two.

In addition, the method may further include receiving an HARQ-ACK bit sequence of the HARQ-ACK dynamic codebook based on a set of PDSCH packets corresponding to the first PDSCH packet trigger indication information and a first NFI corresponding to each PDSCH packet in the set of PDSCH packets.

The first PDSCH packet triggering indication information is PDSCH packet triggering indication information corresponding to the last DCI corresponding to the HARQ-ACK carried in the HARQ-ACK dynamic codebook, the first NFI is NFI corresponding to the last DCI corresponding to each PDSCH packet in the PDSCH packet set, and the last DCI is the first DCI or the second DCI.

It should be noted that, the first and second modes in fig. 6 are the same as the first and second modes in the step 220, and detailed contents in the step 220 are detailed and are not described herein.

Fig. 7 is an interaction flow chart of a method for determining NFI according to an embodiment of the present invention.

As shown in fig. 7, the method may include steps 710-730, as follows:

in step 710, the network device sends first downlink control information DCI to the terminal device.

In step 720, the terminal device receives the first downlink control information DCI sent by the network device, and determines a new feedback indication NFI according to the first DCI.

Here, the principle of the step of determining the NFI by the terminal device is the same as that described in step 220, and details of the step 220 are detailed herein, which will not be described herein.

In step 730, the terminal device determines the HARQ-ACK codebook according to the content referred to in step 720 above, according to the determined NFI and PDSCH packet trigger indication information.

And determining the HARQ-ACK bit sequence of the dynamic codebook based on the triggered indication information of the PDSCH packet corresponding to the last DCI corresponding to the HARQ-ACK carried in the dynamic codebook transmission and the NFI corresponding to the last DCI corresponding to each triggered PDSCH packet. Here, the last DCI is the first DCI or the second DCI. Here, the PDSCH packet trigger instruction information corresponding to the last DCI may be directly indicated in the first DCI, or may be determined based on the above scheme including the PDSCH packet trigger instruction information corresponding to the first DCI.

Based on the methods related to fig. 2-fig. 7, the embodiment of the present invention provides a device for determining NFI based on a terminal device and based on a network device, which is specifically described with reference to fig. 8 and fig. 9, respectively.

Fig. 8 is a schematic block diagram of an apparatus for determining NFI based on a terminal device according to an embodiment of the present invention.

As shown in fig. 8, the apparatus 800 for determining NFI may include:

a transceiver module 801, configured to receive first downlink control information DCI sent by a network device; here, the first DCI is a fallback downlink control information fallback DCI format; alternatively, DCI format 1_0.

A determining module 802, configured to determine a new feedback indication NFI according to the first DCI;

here, the embodiment of the present invention provides two ways, in which NFI is indicated in the first DCI, specifically as follows:

Mode two: NFI is implicitly indicated by the first DCI.

The two modes are respectively described:

mode one: in case the NFI indicates by re-interpreting the first indication field in the first DCI, the NFI indicates by N indication bits of the first indication field; wherein N is an integer greater than or equal to 1.

Here, the first indication field includes: the frequency domain resource allocation indicates a domain or the redundancy version indicates a domain.

In one embodiment, when the first indication field is a redundancy version indication field, the redundancy version indication field includes a first indication bit and a second indication bit; wherein the first indication bit is used for indicating the NFI, and the second indication bit is used for indicating the first redundancy version in the preset redundancy version candidate set.

In another embodiment, when the first indication field is a frequency domain resource allocation indication field, an indication bit of the most significant bit in the frequency domain resource allocation indication field is used to indicate the NFI.

Mode two: in case the NFI is implicitly indicated by the first DCI, the NFI is determined by the NFI in the nearest second DCI, the physical downlink shared channel PDSCH scheduled by the second DCI being assigned to the same PDSCH packet as the PDSCH scheduled by the first DCI. Here, the second DCI is a Non-fallback downlink control information Non-fallback DCI format; alternatively, DCI format 1_1.

And when the second DCI does not exist, determining that the NFI corresponding to the first DCI is a preset NFI. The start time of the PDSCH detection opportunity corresponding to the second DCI is no later than the start time of the PDSCH detection opportunity corresponding to the first DCI.

In addition, the embodiment of the invention also provides a scheme based on the first mode or the second mode and the PDSCH grouping triggering indication information corresponding to the first DCI.

Based on this, the first DCI corresponds to PDSCH packet trigger indication information; the PDSCH grouping triggering indication information in the second DCI is used along with the PDSCH grouping triggering indication information in the second latest DCI;

Here, the PDSCH of the second DCI schedule is assigned to the same PDSCH packet as the PDSCH of the first DCI schedule.

The determining module 802 in the embodiment of the present invention may be further configured to determine, when the second DCI does not exist, that the PDSCH packet triggering indication information corresponding to the first DCI is preset PDSCH packet triggering indication information.

In addition, the apparatus 800 for determining NFI provided in the embodiment of the present invention may further include a processing module 803, configured to determine, based on the PDSCH packet triggering indication information corresponding to the last DCI corresponding to the HARQ-ACK carried in the dynamic codebook transmission, an NFI corresponding to the last DCI corresponding to each triggered PDSCH packet, a HARQ-ACK bit sequence of the dynamic codebook; wherein the last DCI is the first DCI or the second DCI.

Fig. 9 is a schematic block diagram of an apparatus for determining NFI based on a network device according to an embodiment of the present invention.

As shown in fig. 9, the apparatus 900 for determining an NFI may specifically include:

a processing module 901, configured to generate first downlink control information DCI.

Here, the first DCI is a fallback downlink control information fallback DCI format; alternatively, DCI format 1_0. The first DCI is used for indicating the terminal equipment to determine a new feedback indication NFI according to the first DCI; here, the NFI indicates by re-interpreting the first indication field in the first DCI; alternatively, NFI is implicitly indicated by the first DCI.

Mode two: NFI is implicitly indicated by the first DCI.

The two modes are respectively described:

Here, when the second DCI is not present, it is determined that the NFI corresponding to the first DCI is a preset NFI.

A transceiver module 901, configured to send first downlink control information DCI to a terminal device.

The first DCI is used for indicating the terminal equipment to determine a new feedback indication NFI according to the first DCI.

In addition, the transceiver module 901 provided in the embodiment of the present invention may be further configured to receive an HARQ-ACK bit sequence of an HARQ-ACK dynamic codebook based on a PDSCH packet set corresponding to the first PDSCH packet trigger indication information and a first NFI corresponding to each PDSCH packet in the PDSCH packet set; the first PDSCH packet triggering indication information is PDSCH packet triggering indication information corresponding to the last DCI corresponding to the HARQ-ACK carried in the HARQ-ACK dynamic codebook, the first NFI is NFI corresponding to the last DCI corresponding to each PDSCH packet in the PDSCH packet set, and the last DCI is the first DCI or the second DCI.

Fig. 10 is a schematic hardware structure of a terminal device according to an embodiment of the present invention.

As shown in fig. 10, the terminal device 1000 includes, but is not limited to: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, processor 1010, and power supply 1011.

It will be appreciated by those skilled in the art that the terminal device structure shown in fig. 10 does not constitute a limitation of the terminal device, and the terminal device may include more or less components than illustrated, or may combine certain components, or may have a different arrangement of components. In the embodiment of the invention, the terminal equipment comprises, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer and the like.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 1001 may be used to receive and send information or signals during a call, specifically, receive downlink resources from a base station, and then process the downlink resources with the processor 1010; in addition, uplink resources are transmitted to the base station. In general, the radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 1001 may also communicate with networks and other devices through a wireless communication system.

The terminal device provides wireless broadband internet access to the user through the network module 1002, such as helping the user to send and receive e-mail, browse web pages, access streaming media, etc.

The audio output unit 1003 may convert an audio resource received by the radio frequency unit 1001 or the network module 1002 or stored in the memory 1009 into an audio signal and output as sound. Also, the audio output unit 1003 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal device 1000. The audio output unit 1003 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1004 is used for receiving an audio or video signal. The input unit 1004 may include a graphics processor (Graphics Processing Unit, GPU) 10041 and a microphone 10042, the graphics processor 10041 processing an image resource of a still picture or video obtained by an image capturing apparatus (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frame may be displayed on the display unit 1007. The image frames processed by the graphics processor 10041 may be stored in the memory 1009 (or other storage medium) or transmitted via the radio frequency unit 1001 or the network module 1002. Microphone 10042 may receive sound and may be able to process such sound as an audio resource. The processed audio resources may be converted in case of a phone call mode into a format output that may be transmitted to the mobile communication base station via the radio frequency unit 1001.

Terminal device 1000 can also include at least one sensor 1005, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 10061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 10061 and/or the backlight when the terminal device 1000 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when the accelerometer sensor is stationary, and can be used for recognizing the gesture (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking) and the like of the terminal equipment; the sensor 1005 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described herein.

The display unit 1006 is used to display information input by a user or information provided to the user. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 1007 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. Specifically, the user input unit 1007 includes a touch panel 10071 and other input devices 10072. Touch panel 10071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on touch panel 10071 or thereabout using any suitable object or accessory such as a finger, stylus, or the like). The touch panel 10071 can include two portions, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 1010, and receives and executes commands sent by the processor 1010. In addition, the touch panel 10071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 1007 may include other input devices 10072 in addition to the touch panel 10071. Specifically, other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein.

Further, the touch panel 10071 may be overlaid on the display panel 10061, and when the touch panel 10071 detects a touch operation thereon or thereabout, the touch operation is transmitted to the processor 1010 to determine a type of touch event, and then the processor 1010 provides a corresponding visual output on the display panel 10061 according to the type of touch event. Although in fig. 10, the touch panel 10071 and the display panel 10061 are two independent components for implementing the input and output functions of the terminal device, in some embodiments, the touch panel 10071 and the display panel 10061 may be integrated to implement the input and output functions of the terminal device, which is not limited herein.

The interface unit 1008 is an interface to which an external device is connected to the terminal apparatus 1000. For example, the external devices may include wired or wireless headset ports, external power (or battery charger) ports, wired or wireless resource ports, memory card ports, ports for connecting devices having identification modules, audio input/output (I/O) ports, video I/O ports, earphone ports, and the like. Interface unit 1008 may be used to receive input (e.g., resource information, power, etc.) from an external device and transmit the received input to one or more elements within terminal device 1000 or may be used to transmit resources between terminal device 1000 and an external device.

The memory 1009 may be used to store software programs as well as various resources. The memory 1009 may mainly include a storage program area and a storage resource area, wherein the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage resource area may store resources (such as audio resources, phonebooks, etc.) created according to the use of the handset, etc. In addition, the memory 1009 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 1010 is a control center of the terminal device, and connects various parts of the entire terminal device using various interfaces and lines, and performs various functions and processing resources of the terminal device by running or executing software programs and/or modules stored in the memory 1009 and calling resources stored in the memory 1009, thereby performing overall monitoring of the terminal device. The processor 1010 may include one or more processing units; preferably, the processor 1010 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 1010.

Terminal device 1000 can also include a power supply 1011 (e.g., a battery) for powering the various components, and preferably power supply 1011 can be logically connected to processor 1010 via a power management system whereby charge, discharge, and power consumption management functions can be implemented via the power management system.

In addition, the terminal device 1000 includes some functional modules, which are not shown, and will not be described herein.

The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed in a computer, causes the computer to perform the steps of the method of determining NFI of the present invention.

As shown in fig. 11, a block diagram of an exemplary hardware architecture of a network device capable of implementing a method of determining NFI in an embodiment of the present invention.

The device may include a processor 1101 and a memory 1102 storing computer program instructions.

In particular, the processor 1101 may comprise a Central Processing Unit (CPU), or an application specific integrated circuit (application specific integrated circuit, ASIC), or may be configured to implement one or more integrated circuits of embodiments of the present application.

Memory 1102 may include mass storage for data or instructions. By way of example, and not limitation, memory 1102 may comprise a Hard Disk Drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or universal serial bus (universal serial bus, USB) drive, or a combination of two or more of these. Memory 1102 may include removable or non-removable (or fixed) media where appropriate. Memory 1102 may be internal or external to the integrated gateway device, where appropriate. In a particular embodiment, the memory 1102 is a non-volatile solid state memory. In a particular embodiment, the memory 1102 includes Read Only Memory (ROM). The ROM may be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically Erasable PROM (EEPROM), electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these, where appropriate.

The processor 1101 implements the method of determining NFI of any of the above embodiments by reading and executing computer program instructions stored in the memory 1102.

The transceiver 1103 is mainly used for implementing communications between each device and other devices (such as a terminal device) in the embodiment of the present invention.

In one example, the device may also include a bus 1104. As shown in fig. 11, the processor 1101, the memory 1102, and the transceiver 1103 are connected to each other via a bus 1104 and perform communication with each other.

Bus 1104 includes hardware, software, or both. By way of example, and not limitation, the buses may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a micro channel architecture (MCa) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus, or a combination of two or more of the above. The bus 1103 may include one or more buses, where appropriate. Although embodiments of the present application describe and illustrate a particular bus, the present application contemplates any suitable bus or interconnect.

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

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method of the embodiments of the present invention.

Claims

1. A method for determining a new feedback indication NFI, applied to a terminal device, comprising:

receiving first downlink control information DCI sent by network equipment;

determining a New Feedback Indication (NFI) according to the first DCI;

wherein the NFI is indicated by reinterpretating a first indication field in the first DCI or the NFI is implicitly indicated by the first DCI;

wherein, in case the NFI indicates by re-interpreting the first indication field in the first DCI, indicating the NFI by multiplexing an indication field of other information in the first DCI, the other information being information different from the NFI;

In the case that the NFI is implicitly indicated by the first DCI, the NFI is determined by the NFI in a second, nearest DCI, the physical downlink shared channel PDSCH scheduled by the second DCI and the PDSCH scheduled by the first DCI belong to the same PDSCH packet; and when the second DCI does not exist, determining that the NFI corresponding to the first DCI is a preset NFI.

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

in case the NFI is indicated by reinterpretating a first indication field in the first DCI, the NFI is indicated by N indication bits of the first indication field;

wherein N is an integer greater than or equal to 1.

3. The method according to claim 1 or 2, wherein the first indication field comprises: the frequency domain resource allocation indicates a domain or the redundancy version indicates a domain.

4. A method according to claim 3, wherein when the first indication field is the redundancy version indication field, the redundancy version indication field comprises a first indication bit and a second indication bit;

the first indication bit is used for indicating the NFI, and the second indication bit is used for indicating a first redundancy version in a preset redundancy version candidate set.

5. The method of claim 3, wherein when the first indication field is the frequency domain resource allocation indication field, an indication bit of a most significant bit in the frequency domain resource allocation indication field is used to indicate the NFI.

6. The method of claim 1, wherein the first DCI is a fallback downlink control information, fallback, DCI, format; alternatively, DCI format 1_0.

7. The method of claim 1, wherein a start time of a PDSCH detection opportunity corresponding to the second DCI is no later than a start time of a PDSCH detection opportunity corresponding to the first DCI.

8. The method of claim 1, wherein the first DCI corresponds to PDSCH packet trigger indication information; wherein,,

the PDSCH grouping triggering indication information uses PDSCH grouping triggering indication information in the second DCI which is nearest;

and the HARQ-ACK corresponding to the first DCI and the HARQ-ACK corresponding to the nearest second DCI are carried in the same HARQ-ACK dynamic codebook transmission.

9. The method of claim 8, wherein the method further comprises:

and when the second DCI does not exist, determining that the PDSCH grouping triggering indication information corresponding to the first DCI is preset PDSCH grouping triggering indication information.

10. The method according to any one of claims 7-9, wherein the second DCI is a Non-fallback downlink control information, non-fallback, DCI, format; alternatively, DCI format 1_1.

11. The method according to claim 1, wherein the method further comprises:

determining an HARQ-ACK bit sequence of an HARQ-ACK dynamic codebook based on a PDSCH packet set corresponding to the first PDSCH packet trigger indication information and a first NFI corresponding to each PDSCH packet in the PDSCH packet set;

the first PDSCH packet triggering indication information is PDSCH packet triggering indication information corresponding to a last DCI corresponding to an HARQ-ACK carried in the HARQ-ACK dynamic codebook, the first NFI is an NFI corresponding to a last DCI corresponding to each PDSCH packet in the PDSCH packet set, and the last DCI is the first DCI or the second DCI.

12. A method for determining NFI, applied to a network device, comprising:

transmitting first downlink control information DCI to terminal equipment;

the first DCI is used for indicating the terminal equipment to determine a new feedback indication NFI according to the first DCI; wherein the NFI indicates by re-interpreting a first indication field in the first DCI, wherein, in case the NFI indicates by re-interpreting the first indication field in the first DCI, the NFI is indicated by multiplexing an indication field of other information in the first DCI, the other information being information different from the NFI; or, implicitly indicating, by the NFI, by the first DCI, where, in the case where the NFI is implicitly indicated by the first DCI, the NFI is determined by an NFI in a second, nearest DCI, the physical downlink shared channel PDSCH scheduled by the second DCI and the PDSCH scheduled by the first DCI belong to the same PDSCH packet; and when the second DCI does not exist, determining that the NFI corresponding to the first DCI is a preset NFI.

13. The method according to claim 12, comprising:

wherein N is an integer greater than or equal to 1.

14. The method according to claim 12 or 13, wherein the first indication field comprises: the frequency domain resource allocation indicates a domain or the redundancy version indicates a domain.

15. The method of claim 14, wherein when the first indication field is the redundancy version indication field, the redundancy version indication field comprises a first indication bit and a second indication bit;

16. The method of claim 14, wherein when the first indication field is the frequency domain resource allocation indication field, an indication bit of a most significant bit in the frequency domain resource allocation indication field is used to indicate the NFI.

17. The method of claim 12, wherein the first DCI is a fallback downlink control information, fallback, DCI, format; alternatively, DCI format 1_0.

18. The method of claim 12, wherein a start time of a PDSCH detection opportunity corresponding to the second DCI is no later than a start time of a PDSCH detection opportunity corresponding to the first DCI.

19. The method of claim 12, wherein the first DCI corresponds to PDSCH packet trigger indication information; wherein,,

20. The method of claim 19, wherein the method further comprises:

21. The method according to any one of claims 12, 18-20, wherein the second DCI is a Non-fallback downlink control information, non-fallback, DCI, format; alternatively, DCI format 1_1.

22. The method according to claim 12, wherein the method further comprises:

Receiving an HARQ-ACK bit sequence of an HARQ-ACK dynamic codebook based on a PDSCH packet set corresponding to the first PDSCH packet trigger indication information and a first NFI corresponding to each PDSCH packet in the PDSCH packet set;

23. A method for determining a new feedback indication NFI, applied to a terminal device, comprising:

receiving a PDSCH (physical downlink shared channel) of a semi-persistent scheduling (SPS) sent by network equipment;

determining that a new feedback indication NFI corresponding to the SPS PDSCH is an NFI in a second DCI which is the nearest;

wherein, the PDSCH scheduled by the second DCI and the SPS PDSCH belong to the same PDSCH packet.

24. The method of claim 23, wherein the PDSCH of the second DCI schedule and the SPS PDSCH are assigned to PDSCH packet 0.

25. The method of claim 23, wherein the second DCI is a Non-fallback downlink control information, non-fallback, DCI, format; alternatively, DCI format 1_1.

26. A method for determining a new feedback indication, NFI, applied to a network device, comprising:

determining that a new feedback indication NFI corresponding to the SPS PDSCH is an NFI in a second DCI which is the nearest to the terminal device;

27. The method of claim 26, wherein the PDSCH of the second DCI schedule and the SPS PDSCH are assigned to PDSCH packet 0.

28. The method of claim 26, wherein the second DCI is a Non-fallback downlink control information, non-fallback, DCI, format; alternatively, DCI format 1_1.

29. An apparatus for determining a new feedback indication NFI, applied to a terminal device, the apparatus comprising:

wherein the NFI indicates by re-interpreting a first indication field in the first DCI, wherein, in case the NFI indicates by re-interpreting the first indication field in the first DCI, the NFI is indicated by multiplexing an indication field of other information in the first DCI, the other information being information different from the NFI; or, the NFI is implicitly indicated by the first DCI, where, in the case that the NFI is implicitly indicated by the first DCI, the NFI is determined by an NFI in a second DCI that is closest, where a physical downlink shared channel PDSCH scheduled by the second DCI and a PDSCH scheduled by the first DCI belong to the same PDSCH packet; and when the second DCI does not exist, determining that the NFI corresponding to the first DCI is a preset NFI.

30. An apparatus for determining a new feedback indication, NFI, applied to a network device, the apparatus comprising:

the first DCI is used for indicating the terminal equipment to determine a new feedback indication NFI according to the first DCI; the NFI indicates through a first indication field in the first DCI by re-interpreting, wherein in a case where the NFI indicates through the first indication field in the first DCI by re-interpreting, the NFI is indicated by multiplexing an indication field of other information in the first DCI, the other information being information different from the NFI; or, implicitly indicating, by the NFI, by the first DCI, where, in the case where the NFI is implicitly indicated by the first DCI, the NFI is determined by an NFI in a second, nearest DCI, the physical downlink shared channel PDSCH scheduled by the second DCI and the PDSCH scheduled by the first DCI belong to the same PDSCH packet; and when the second DCI does not exist, determining that the NFI corresponding to the first DCI is a preset NFI.

31. An apparatus for determining a new feedback indication NFI, applied to a terminal device, comprising:

the receiving and transmitting module is used for receiving a PDSCH (physical downlink shared channel) of the semi-persistent scheduling SPS sent by the network equipment;

32. An apparatus for determining a new feedback indication NFI, applied to a network device, comprising:

the receiving and transmitting module is used for transmitting a semi-persistent scheduling SPS physical downlink shared channel PDSCH to the terminal equipment;

33. A terminal device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 1 to 11, or 23-25 when the computer program is executed.

34. A network device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method according to any one of claims 12 to 22, or 26-28 when the computer program is executed.

35. A computer readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, implements the steps of the method according to any of claims 1 to 11, 12 to 22, 23-25, or 26-28.