CN111447686A

CN111447686A - HARQ-ACK feedback method, terminal and network equipment

Info

Publication number: CN111447686A
Application number: CN201910118196.7A
Authority: CN
Inventors: 李娜
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-02-15
Filing date: 2019-02-15
Publication date: 2020-07-24
Anticipated expiration: 2039-02-15
Also published as: CN111447686B

Abstract

The embodiment of the invention provides a HARQ-ACK feedback method, a terminal and network equipment, wherein the method comprises the following steps: receiving DCI, wherein the DCI comprises a resource allocation domain, and the resource allocation domain is used for requesting or triggering the terminal to feed back HARQ-ACK; and feeding back the HARQ-ACK according to the DCI. The embodiment of the invention can improve the resource utilization rate.

Description

HARQ-ACK feedback method, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a hybrid automatic Repeat request Acknowledgement (HARQ-ACK) feedback method, a terminal, and a network device.

Background

For example, in a New Radio Unlicensed (NR-U) technology, the terminal needs to perform L BT detection before feeding back HARQ-ACK, and when detecting that the channel is in an idle state, HARQ-ACK may be transmitted, and if the channel is busy, HARQ-ACK may not be fed back, so that the network device may perform Physical Downlink Shared Channel (PDSCH) retransmission, but actually the terminal may have successfully received the PDSCH, which may cause unnecessary PDSCH retransmission, and thus resource utilization rate is low.

Disclosure of Invention

The embodiment of the invention provides a HARQ-ACK feedback method, a terminal and network equipment, aiming at solving the problem of low resource utilization rate.

In a first aspect, an embodiment of the present invention provides a HARQ-ACK feedback method, applied to a terminal, including:

receiving Downlink Control Information (DCI), wherein the DCI comprises a resource allocation domain, and the resource allocation domain is used for requesting or triggering the terminal to feed back HARQ-ACK;

and feeding back the HARQ-ACK according to the DCI.

In a second aspect, an embodiment of the present invention provides a HARQ-ACK feedback method, applied to a network device, including:

sending DCI, wherein the DCI comprises a resource allocation domain, and the resource allocation domain is used for requesting or triggering a terminal to feed back HARQ-ACK;

receiving the HARQ-ACK.

In a third aspect, an embodiment of the present invention provides a terminal, including:

a receiving module, configured to receive DCI, where the DCI includes a resource allocation field, and the resource allocation field is used to request or trigger the terminal to feed back HARQ-ACK;

and the feedback module is used for feeding back the HARQ-ACK according to the DCI.

In a fourth aspect, an embodiment of the present invention provides a network device, including:

a sending module, configured to send DCI, where the DCI includes a resource allocation field, and the resource allocation field is used to request or trigger a terminal to feed back HARQ-ACK;

a receiving module, configured to receive the HARQ-ACK.

In a fifth aspect, an embodiment of the present invention provides a terminal, including: the invention also provides a device for the terminal-side HARQ-ACK feedback, which comprises a memory, a processor and a program stored on the memory and capable of running on the processor, wherein the program realizes the steps in the terminal-side HARQ-ACK feedback method provided by the embodiment of the invention when being executed by the processor.

In a sixth aspect, an embodiment of the present invention provides a network device, including: the invention further provides a device for HARQ-ACK feedback, which comprises a memory, a processor and a program stored on the memory and capable of running on the processor, wherein the program realizes the steps in the HARQ-ACK feedback method at the network device side provided by the embodiment of the invention when being executed by the processor.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the computer program, when executed by a processor, implements the steps in the HARQ-ACK feedback method on the terminal side provided in the embodiment of the present invention, or the computer program, when executed by the processor, implements the steps in the HARQ-ACK feedback method on the network device side provided in the embodiment of the present invention.

In the embodiment of the invention, DCI is received, the DCI comprises a resource allocation domain, and the resource allocation domain is used for requesting or triggering the terminal to feed back HARQ-ACK; and feeding back the HARQ-ACK according to the DCI. Therefore, more opportunities can be provided for HARQ-ACK feedback, so that unnecessary retransmission is reduced, and the resource utilization rate is improved.

Drawings

Fig. 1 is a block diagram of a network system to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart of a HARQ-ACK feedback method according to an embodiment of the present invention;

fig. 3 is a schematic diagram of HARQ-ACK feedback provided in an embodiment of the present invention;

fig. 4 is a diagram illustrating another HARQ-ACK feedback provided by an embodiment of the present invention;

fig. 5 is a flowchart of another HARQ-ACK feedback method provided by an embodiment of the present invention;

fig. 6 is a structural diagram of a terminal according to an embodiment of the present invention;

fig. 7 is a block diagram of a network device according to an embodiment of the present invention;

fig. 8 is a block diagram of another terminal provided in an embodiment of the present invention;

fig. 9 is a block diagram of another network device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The HARQ-ACK feedback method, the terminal and the network device provided by the embodiment of the present invention may be applied to a wireless communication system, which may be a 5G system, an Evolved long Term Evolution (Evolved L ong Term Evolution, e L TE) system, a long Term Evolution (L ong Term Evolution, L TE) system, or a subsequent Evolved communication system, and the like.

Referring to fig. 1, fig. 1 is a structural diagram of a network system to which an embodiment of the present invention is applicable, and as shown in fig. 1, the network system includes a terminal 11 and a network Device 12, where the terminal 11 may be a User Equipment (UE) or other terminal-side Device, such as a mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a laptop Computer (L AP pc), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a robot, and it should be noted that a specific type of the terminal 11 is not limited in the embodiment of the present invention, the network Device 12 may be a 4G base station, or a 5G base station, or a later-version base station, or a base station in another communication system, or referred to as a Node B, an evolved Node B, or a Transmission Receiving Point (TRP), or an AP (AP), or other network devices may be referred to as a Node B, an evolved Node B, or an Access Point MN, or an Access Point (AP) as a Node MN, or a Master Node SN, and the network Device may be referred to as a Node B, or a Node MN.

Referring to fig. 2, fig. 2 is a flowchart of a HARQ-ACK feedback method according to an embodiment of the present invention, where the method is applied to a terminal, and as shown in fig. 2, the method includes the following steps:

step 201, receiving DCI, where the DCI includes a resource allocation field, and the resource allocation field is used to request or trigger the terminal to feed back HARQ-ACK.

Step 201 may be receiving DCI sent by a network device, where the resource allocation field may be an information field for allocating time domain resources or frequency domain resources in the DCI, for example: the resource allocation domain may include: a Time Domain Resource Allocation (TDRA) domain and/or a Frequency Domain Resource Allocation (FDRA) domain.

In addition, the resource allocation field may be configured to request or trigger the terminal to feed back HARQ-ACK, where bit information in the resource allocation field is used to indicate the terminal to feed back HARQ-ACK.

Further, the HARQ-ACK may include at least one of HARQ-ACKs not reported by the terminal, HARQ-ACKs indicated by the network device, HARQ-ACKs corresponding to all configured processes, and the like.

Step 202, feeding back the HARQ-ACK according to the DCI.

Since the resource allocation field is used for requesting or triggering the terminal to feed back the HARQ-ACK, the terminal can feed back the HARQ-ACK according to the DCI after receiving the DCI. For example: and feeding back at least one of HARQ-ACK which is not reported by the terminal, HARQ-ACK which is indicated by the network equipment, HARQ-ACK which corresponds to all configured processes and the like.

It should be noted that the HARQ-ACK in the embodiment of the present invention may be an HARQ-ACK fed back to a PDSCH transmitted in downlink or a PDCCH releasing Semi-Persistent Scheduling (SPS) PDSCH. The PDSCH may be a dynamically scheduled PDSCH or an SPS PDSCH. In addition, the DCI may be DCI for scheduling a PDSCH.

In the embodiment of the invention, because the resource allocation domain of the DCI is used for requesting or triggering the terminal to feed back the HARQ-ACK, more opportunities for feeding back the HARQ-ACK can be provided for the terminal so as to reduce unnecessary retransmission and further improve the resource utilization rate, for example, multiple opportunities can be provided for the HARQ-ACK feedback so as to avoid PDSCH retransmission caused by L BT failure.

As an optional implementation manner, the DCI further includes feedback timing information and Physical Uplink Control Channel (PUCCH) resource allocation information, and the feeding back the HARQ-ACK according to the DCI includes:

and feeding back the HARQ-ACK according to the feedback timing information and the PUCCH resource allocation information.

The feedback timing information may be used to indicate the timing from PDSCH to HARQ-ACK, for example: the feedback timing information may be a PDSCH-to-HARQ feedback timing indicator (PDSCH-to-HARQ feedback timing indicator).

The PUCCH resource allocation information may be used to indicate PUCCH resources for terminal feedback HARQ-ACK, for example: may be a PUCCH Resource Indicator (PRI).

And feeding back the HARQ-ACK according to the feedback timing information and the PUCCH resource allocation information, for example, determining the time for feeding back the HARQ-ACK according to the feedback timing information, determining the PUCCH resource for feeding back the HARQ-ACK according to the PUCCH resource allocation information, and feeding back. Preferably, HARQ-ACK may be fed back at the time and resource indicated by PDSCH-to-HARQ feedback timing indication (PDSCH-to-HARQ feedback timing indicator) and PUCCH Resource Indication (PRI), for example: and feeding back at least one of HARQ-ACK which is not reported by the terminal, HARQ-ACK which is indicated by the network equipment, HARQ-ACK which corresponds to all configured processes and the like.

In this embodiment, because the DCI further includes feedback timing information and PUCCH resource allocation information, the terminal may feed back on the resource indicated by the network device, and the network device receives the resource, so as to save power consumption of the network device.

It should be noted that, in the embodiment of the present invention, the resource for feeding back the HARQ-ACK is not limited to be determined by the feedback timing information and the PUCCH resource allocation information included in the DCI, for example: at least one of the time and channel resources for feeding back the HARQ-ACK may also be preconfigured or defined in the protocol, etc.

As an optional implementation manner, the resource indicated by the resource allocation field is empty or a preset value.

The preset value may be an invalid value, that is, invalid PDSCH resource allocation, to request or trigger the terminal to feed back HARQ-ACK. Specifically, the values in the protocol existing table, or the redefined specific values, may not be the values in the protocol existing table.

When the terminal receives the DCI and determines that the resource indicated by the resource allocation field is empty or a preset value, it may be determined that the resource allocation field is used to request or trigger the terminal to feed back HARQ-ACK.

In this embodiment, since the resource indicated by the resource allocation field is empty or a preset value to request or trigger the terminal to feed back HARQ-ACK, the format of DCI does not need to be modified to reduce complexity.

Optionally, when the resource allocation domain is a TDRA domain:

the length of the PDSCH corresponding to the TDRA domain indication value in a time domain resource allocation table is 0; or

And the value indicated by the TDRA domain corresponds to first information in a time domain resource allocation table, wherein the first information is the preset value and is used for requesting or triggering the terminal to feed back HARQ-ACK.

In addition, the domain value m of the TDRA field in the DCI may correspond to m +1 rows in the time domain resource allocation table, and each row in the table may correspond to different K0, start and length indicator (S L IV), or may directly be a start symbol S and an allocation length L, wherein the S L IV and the allocation length L may be used to indicate a slot offset of the PDSCH with respect to the PDCCH, K0, the start symbol and the symbol length, and the K0 may be used to indicate a slot offset number between the PDSCH and the PDCCH, and the start symbol S is used to indicate a start symbol of the PDSCH.

The time domain resource allocation table is illustrated in tables 1 to 4 below:

TABLE 1 Normal Cyclic Prefix (CP) Default PDSCH time domain resource allocation A for normal CP

Table 2: default PDSCH time domain resource allocation A for extended CP (Default PDSCH time domain resource CP)

Table 3: default PDSCH time domain resource allocation B (Default PDSCH time domain resource B)

Table 4: default PDSCH time domain resource allocation C (Default PDSCH time domain resource C)

It should be noted that the above 4 tables are only examples, and the present invention is not limited to these examples.

The first information may be Reserved (Reserved) information in the time domain resource allocation table, that is, in the embodiment of the present invention, the Reserved information in the time domain resource allocation table may be newly defined to request or trigger the terminal to feed back HARQ-ACK. Of course, the embodiments of the present invention are not limited thereto, and examples thereof include: a row may be newly added to the time domain resource allocation table or a definition of a row may be reinterpreted, where the row is a preset value and is used to indicate that the terminal is requested or triggered to feed back HARQ-ACK, that is, when the value indicated by the TDRA field corresponds to the value, the TDRA field is used to request or trigger the terminal to feed back HARQ-ACK.

Because the length of the PDSCH corresponding to the value indicated by the TDRA field in the time domain resource allocation table is 0 or the first information in the time domain resource allocation table, it is not necessary to introduce a field specifically used for indicating whether to request or trigger HARQ-ACK feedback, which is beneficial to reducing the size of DCI.

Optionally, when the resource allocation domain is a TDRA domain:

the value indicated by the TDRA domain corresponds to a first PDSCH time domain allocation value in a PDSCH time domain allocation list, and the first PDSCH time domain allocation value represents 0 time domain resources.

Wherein the PDSCH Time Domain Allocation list (PDSCH-Time Domain Allocation L ist) may be RRC configured, such as providing a PDSCH Time Domain Allocation list (PDSCH-Time Domain Allocation L ist provided in PDSCH Common configuration) or providing a PDSCH Time Domain Allocation list (PDSCH-Time Domain Allocation L st provided in PDSCH Common configuration) and further wherein the presence of a PDSCH Time Domain Allocation (PDSCH-Time Domain Allocation) value in the PDSCH Time Domain Allocation list represents 0 Time Domain symbols, such as 0 Orthogonal Frequency Division Multiplexing (OFDM) symbol or invalid representation of PDSCH Allocation or triggering HARQ-ACK feedback, such that the TDRA field may indicate the value to request or trigger terminal feedback-not-needed, and as such, may also implement a dedicated HARQ feedback request for indicating whether to reduce the DCI size or not to trigger HARQ feedback.

Optionally, when the resource allocation domain is an FDRA domain:

all bits of the bitmap (bitmap) of the FDRA field have a value of 0.

In this embodiment, it can also be achieved that no domain dedicated to indicating whether to request or trigger HARQ-ACK feedback needs to be introduced, which is beneficial to reducing the size of DCI.

As an optional implementation, the HARQ-ACK includes:

at least one non-reported HARQ-ACK; or

HARQ-ACK corresponding to all configured processes (processes); or

And the Process identification (Process ID) or the Process group identification (Process ID group) indicated by the DCI corresponds to the HARQ-ACK corresponding to the Process.

Further, the DCI may indicate the process identifier or the process group identifier through at least one of the following fields:

a Virtual Resource Block (VRB) and a Physical Resource Block (PRB) mapping (i.e., VRB-to-PRB mapping) domain;

modulation and Coding Scheme (MCS) field;

a New Data Indicator (NDI) field.

A Redundancy Version (RV) field;

HARQ process number (i.e., HARQ process number) field. In this embodiment, since the at least one domain indicates the process identifier or the process group identifier, it is not necessary to newly introduce a new domain to indicate the process identifier or the process group identifier for triggering HARQ-ACK feedback, so as to save DCI size.

Wherein, the at least one non-reported HARQ-ACK may be all or part of non-reported HARQ-ACKs of the terminal. And the above all configured processes may be all configured processes of the terminal.

In addition, in this embodiment, it may also be implemented that a process identifier or a process group identifier is indicated in the DCI, so that the terminal feeds back HARQ-ACK of a corresponding process, so as to save transmission overhead.

The HARQ-ACK feedback method provided by the embodiment of the invention can provide a DCI design method for requesting or triggering HARQ-ACK feedback in NR-U and a terminal behavior specification. The method specifically comprises the following steps:

the time domain or frequency domain resource indicated by the TDRA or FDRA in the DCI for scheduling the PDSCH by the network device is empty (or a preset value), specifically:

the TDRA indicates that the time domain resource is empty, which may be that the value indicated by the TDRA domain corresponds to reserved or the length of the corresponding PDSCH in the time domain resource allocation table is 0;

the FDRA indicates that the time domain resource is empty, and all bits of the bitmap of the FDRA may be 0.

After the terminal receives the DCI, the UE determines the time for feeding back the HARQ-ACK and the PUCCH resource according to a PDSCH-to-HARQ _ feedback timing indicator (PDSCH-to-HARQ _ feedback timing indicator) and a PUCCH Resource Indicator (PRI) in the DCI, and performs the following feedback on the PUCCH resource:

the UE feeds back all the unreported HARQ-ACKs; or

The UE feeds back HARQ-ACK information corresponding to all the processes; or

And the UE feeds back the HARQ-ACK information of the PDSCH corresponding to the Process ID or the Process ID group indicated in the DCI according to the Process ID or the Process ID group indicated in the DCI.

The following is illustrated by three examples:

example 1:

as shown in fig. 3, the network device schedules different PDSCHs (PDSCH1/2/3) and indicates that they feed back HARQ-ACK on PUCCH1, but the terminal detects that the channel is busy when it does L BT before transmitting PUCCH1, and therefore cannot send HARQ-ACK feedback for these PDSCHs, the network device triggers the terminal to feed back these HARQ-ACK feedback that cannot be sent on PUCCH2 by sending PDCCH4, where the time domain resource and/or frequency domain resource of the corresponding PDSCH indicated by TDRA and/or FDRA in PDCCH4 is empty, and the PUCCH time and resource (the active HARQ feedback time and resource acknowledged to the terminal in the DCI) indicated by PRI and PDSCH-to-HARQ feedback timing indicator in PDCCH4, respectively:

when the frequency domain resource is empty, which may be a resource allocation type 0(resource allocation type 0), all bits of the bitmap are 0;

the time domain resource being empty may be that a Row index (Row index) indicated by the TDRA field corresponds to reserved or that L corresponds to 0.

After receiving PDCCH4, the terminal feeds back the HARQ-ACK of the non-fed PDSCH1/2/3 according to the time and resources indicated by PDCCH 4. In addition, PDCCH4 may also include the triggered process ID(s) or process ID group(s), and in this case, the terminal feeds back HARQ-ACK corresponding to the indicated process ID or process ID group according to the instruction of the network device. Since the PDSCH scheduled by PDCCH4 is invalid, some other fields in the DCI are also invalid, such as information fields of VRB-to-PRB mapping, MCS and RV, HARQ process number, and New data indicator, so that other explanations can be made to these fields at this Time, such as HARQ-ACK process ID(s) or HARQ-ACK process ID group(s) for indicating the DCI trigger or Channel Occupancy Time (COT) information.

In this embodiment, PDCCH4 and PDSCH1/2/3 may be in the same COT or in different COTs, which is not limited.

In addition, if the terminal still fails to send HARQ-ACK in PUCCH2, the network device may request or trigger the terminal to feed back HARQ-ACK again until the corresponding HARQ-ACK feedback is successfully received.

Example 2:

as shown in fig. 4, the network device schedules different PDSCHs (PDSCH1/2/3), and the HARQ feedback timing indicator (PDSCH-to-HARQ _ feedback timing indicator) of the PDSCH in its corresponding DCI does not give a specific value, but indicates that the terminal stores its corresponding feedback HARQ-ACK first. The network device triggers the terminal to feed back the non-transmitted HARQ-ACK feedback on the PUCCH2 by sending PDCCH4, where the time domain resource and/or frequency domain resource indicated by the TDRA and/or FDRA in PDCCH4 is empty (0 OFDM symbol (row index corresponding to reserved) or 0 PRB (all bits in bitmap are 0)), and the time and resource (the exact HARQ feedback time and resource is provided in PDCCH 4) of HARQ-ACK feedback are indicated (the terminal is in the DCI). After receiving PDCCH4, the terminal feeds back the HARQ-ACK of the non-fed PDSCH1/2/3 according to the time and resources indicated by PDCCH 4. PDCCH4 may also include the triggered process ID or process ID group, and at this time, the terminal feeds back HARQ-ACK corresponding to the indicated process ID or process ID group according to the instruction of the network device.

Example three:

the TDRA may indicate 0 time domain resources (i.e., the resources are empty) in the following manner:

in one way: in the four tables provided above (e.g., Default PDSCH time domain resource allocation A/B/C), one row in the table indicates that the length of PDSCH is 0, and the TDRA in the DCI indicates that the PDSCH is in the row

For example, for the default a (default a) table, a certain row in the table may be reinterpreted to indicate that the length of the PDSCH is 0, for example, the row index is 16, which is as follows:

for default B or C (default B/C), the row of reserved in the table (default B table row index is 16, default row index is 6/7) may be redefined, which indicates that the length of PDSCH is 0, and is used for HARQ-ACK feedback triggering, specifically as follows:

in another mode, one PDSCH Time Domain Allocation (PDSCH-Time Domain Allocation) in a RRC configured PDSCH Time Domain Allocation list (PDSCH-Time Domain Allocation L ist) represents 0 OFDM symbol, specifically, the PDSCH Time Domain Allocation list (PDSCH-Time Domain Allocation L ist provided in a PDSCH-Confic Common configuration) or the PDSCH Time Domain Allocation list (PDSCH-Time Domain Allocation L actual provided in a PDSCH-Configi).

The embodiment of the invention specifically discloses a design method of DCI requesting/triggering HARQ-ACK feedback in NRU and a behavior specification of a terminal, and specifically comprises the following steps:

the time domain/frequency domain resource indicated by TDRA or FDRA in DCI of the PDSCH scheduled by the network equipment is empty;

after the terminal receives the DCI, HARQ-ACK is fed back on the time and resources indicated by the DCI,

the terminal feeds back all the unreported HARQ-ACK, or

The terminal feeds back HARQ-ACK information corresponding to all processes, or

If the DCI has the Process ID or the Process ID group indicating the trigger, the terminal transmits the HARQ-ACK information of the PDSCH corresponding to the Process ID or the Process ID group indicated in the DCI.

The HARQ-ACK feedback method provided by the invention can provide multiple opportunities for HARQ-ACK feedback, avoid PDSCH retransmission caused by L BT failure or be used for triggering PDSCH scheduling feedback HARQ-ACK without specific feedback timing, and simultaneously does not need to introduce a domain specially used for indicating whether to trigger HARQ-ACK feedback, thereby being beneficial to reducing DCI size or not introducing a new DCI format.

Referring to fig. 5, fig. 5 is a flowchart of another HARQ-ACK feedback method provided in an embodiment of the present invention, where the method is applied to a network device, and as shown in fig. 5, the method includes the following steps:

step 501, sending DCI, where the DCI includes a resource allocation field, and the resource allocation field is used to request or trigger a terminal to feed back HARQ-ACK;

step 502, receiving the HARQ-ACK.

Optionally, the resource allocation domain includes:

a TDRA domain and/or an FDRA domain.

Optionally, the resource indicated by the resource allocation field is empty or a preset value.

Optionally, when the resource allocation domain is a TDRA domain:

The value indicated by the TDRA domain corresponds to first information in a time domain resource allocation table, wherein the first information is the preset value and is used for requesting or triggering the terminal to feed back HARQ-ACK; or

Optionally, when the resource allocation domain is an FDRA domain:

and the values of all bits of the bitmap of the FDRA domain are 0.

Optionally, the HARQ-ACK includes:

at least one non-reported HARQ-ACK; or

HARQ-ACK corresponding to all configured processes; or

And the process identifier or the process group identifier indicated by the DCI is corresponding to the HARQ-ACK of the process.

Optionally, the DCI indicates the process identifier or the process group identifier through at least one of the following domains:

a VRB and PRB mapping domain;

an MCS domain;

an NDI domain;

an RV domain;

HARQ process number field.

Optionally, the DCI further includes feedback timing information and PUCCH resource allocation information.

It should be noted that, this embodiment is used as an implementation of a network device corresponding to the embodiment shown in fig. 2, and specific implementation of this embodiment may refer to the relevant description of the embodiment shown in fig. 2, so that, in order to avoid repeated descriptions, this embodiment is not described again, and the same beneficial effects may also be achieved.

Referring to fig. 6, fig. 6 is a structural diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 6, a terminal 600 includes:

a receiving module 601, configured to receive DCI, where the DCI includes a resource allocation field, and the resource allocation field is used to request or trigger the terminal to feed back HARQ-ACK;

a feedback module 602, configured to feed back the HARQ-ACK according to the DCI.

Optionally, the resource allocation domain includes:

a TDRA domain and/or an FDRA domain.

Optionally, when the resource allocation domain is a TDRA domain:

the length of the Physical Downlink Shared Channel (PDSCH) corresponding to the TDRA domain indication value in a time domain resource allocation table is 0; or

Optionally, when the resource allocation domain is an FDRA domain:

and the values of all bits of the bitmap of the FDRA domain are 0.

Optionally, the HARQ-ACK includes:

at least one non-reported HARQ-ACK; or

HARQ-ACK corresponding to all configured processes; or

a VRB and PRB mapping domain;

an MCS domain;

an NDI domain;

an RV domain;

HARQ process number field.

Optionally, the DCI further includes feedback timing information and PUCCH resource allocation information, and the feedback module 602 is configured to feed back the HARQ-ACK according to the feedback timing information and the PUCCH resource allocation information.

The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the method embodiment of fig. 2, and for avoiding repetition, details are not described here, and the resource utilization rate can be improved.

Referring to fig. 7, fig. 7 is a structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 7, a network device 700 includes:

a sending module 701, configured to send DCI, where the DCI includes a resource allocation field, and the resource allocation field is used to request or trigger a terminal to feed back HARQ-ACK;

a receiving module 702 configured to receive the HARQ-ACK.

Optionally, the resource allocation domain includes:

a TDRA domain and/or an FDRA domain.

Optionally, when the resource allocation domain is a TDRA domain:

Optionally, when the resource allocation domain is an FDRA domain:

and the values of all bits of the bitmap of the FDRA domain are 0.

Optionally, the HARQ-ACK includes:

at least one non-reported HARQ-ACK; or

HARQ-ACK corresponding to all configured processes; or

a VRB and PRB mapping domain;

an MCS domain;

an NDI domain;

an RV domain;

HARQ process number field.

The network device provided in the embodiment of the present invention can implement each process implemented by the network device in the method embodiment of fig. 5, and for avoiding repetition, details are not described here, and the resource utilization rate can be improved.

Figure 8 is a schematic diagram of the hardware architecture of a terminal implementing various embodiments of the present invention,

the terminal 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, a processor 810, and a power supply 811. Those skilled in the art will appreciate that the terminal configuration shown in fig. 8 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a robot, a wearable device, a pedometer, and the like.

A radio frequency unit 801, configured to receive DCI, where the DCI includes a resource allocation field, and the resource allocation field is used to request or trigger the terminal to feed back HARQ-ACK;

the radio frequency unit 801 is further configured to feed back the HARQ-ACK according to the DCI.

Optionally, the resource allocation domain includes:

a TDRA domain and/or an FDRA domain.

Optionally, when the resource allocation domain is a TDRA domain:

Optionally, when the resource allocation domain is an FDRA domain:

and the values of all bits of the bitmap of the FDRA domain are 0.

Optionally, the HARQ-ACK includes:

at least one non-reported HARQ-ACK; or

HARQ-ACK corresponding to all configured processes; or

a VRB and PRB mapping domain;

an MCS domain;

an NDI domain;

an RV domain;

HARQ process number field.

Optionally, the DCI further includes feedback timing information and PUCCH resource allocation information, and the feeding back the HARQ-ACK according to the DCI includes:

The terminal can improve the resource utilization rate.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 801 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 810; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 801 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. Further, the radio frequency unit 801 can also communicate with a network and other devices through a wireless communication system.

The terminal provides wireless broadband internet access to the user through the network module 802, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 803 may convert audio data received by the radio frequency unit 801 or the network module 802 or stored in the memory 809 into an audio signal and output as sound. Also, the audio output unit 803 may also provide audio output related to a specific function performed by the terminal 800 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 803 includes a speaker, a buzzer, a receiver, and the like.

The input unit 804 is used for receiving an audio or video signal. The input Unit 804 may include a Graphics Processing Unit (GPU) 8041 and a microphone 8042, and the Graphics processor 8041 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 806. The image frames processed by the graphics processor 8041 may be stored in the memory 809 (or other storage medium) or transmitted via the radio frequency unit 801 or the network module 802. The microphone 8042 can receive sound, and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 801 in case of a phone call mode.

The terminal 800 also includes at least one sensor 805, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 8061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 8061 and/or the backlight when the terminal 800 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 805 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The Display unit 806 may include a Display panel 8061, and the Display panel 8061 may be configured in the form of a liquid Crystal Display (L acquired Crystal Display, L CD), an Organic light-Emitting Diode (O L ED), or the like.

The user input unit 807 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. Specifically, the user input unit 807 includes a touch panel 8071 and other input devices 8072. The touch panel 8071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 8071 (e.g., operations by a user on or near the touch panel 8071 using a finger, a stylus, or any other suitable object or accessory). The touch panel 8071 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction 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 sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 810, receives a command from the processor 810, and executes the command. In addition, the touch panel 8071 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 8071, the user input unit 807 can include other input devices 8072. In particular, other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 8071 can be overlaid on the display panel 8061, and when the touch panel 8071 detects a touch operation on or near the touch panel 8071, the touch operation is transmitted to the processor 810 to determine the type of the touch event, and then the processor 810 provides a corresponding visual output on the display panel 8061 according to the type of the touch event. Although in fig. 8, the touch panel 8071 and the display panel 8061 are two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 8071 and the display panel 8061 may be integrated to implement the input and output functions of the terminal, which is not limited herein.

The interface unit 808 is an interface for connecting an external device to the terminal 800. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 808 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the terminal 800 or may be used to transmit data between the terminal 800 and external devices.

The memory 809 may be used to store software programs as well as various data. The memory 809 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 809 can include high speed random access memory, and can 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 810 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 809 and calling data stored in the memory 809, thereby integrally monitoring the terminal. Processor 810 may include one or more processing units; preferably, the processor 810 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 810.

The terminal 800 may also include a power supply 811 (e.g., a battery) for powering the various components, and preferably, the power supply 811 may be logically coupled to the processor 810 via a power management system to provide management of charging, discharging, and power consumption via the power management system.

In addition, the terminal 800 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, including a processor 810, a memory 809, and a computer program stored in the memory 809 and capable of running on the processor 810, where the computer program is executed by the processor 810 to implement each process of the foregoing HARQ-ACK feedback method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Referring to fig. 9, fig. 9 is a block diagram of another network device according to an embodiment of the present invention, and as shown in fig. 9, the network device 900 includes: a processor 901, a transceiver 902, a memory 903, and a bus interface, wherein:

a transceiver 902, configured to send DCI, where the DCI includes a resource allocation field, and the resource allocation field is used to request or trigger a terminal to feed back HARQ-ACK;

a transceiver 902 further configured to receive the HARQ-ACK.

Optionally, the resource allocation domain includes:

a TDRA domain and/or an FDRA domain.

Optionally, when the resource allocation domain is a TDRA domain:

Optionally, when the resource allocation domain is an FDRA domain:

and the values of all bits of the bitmap of the FDRA domain are 0.

Optionally, the HARQ-ACK includes:

at least one non-reported HARQ-ACK; or

HARQ-ACK corresponding to all configured processes; or

a VRB and PRB mapping domain;

an MCS domain;

an NDI domain;

an RV domain;

HARQ process number field.

The network equipment can improve the resource utilization rate.

Wherein the transceiver 902 is configured to receive and transmit data under the control of the processor 901, and the transceiver 902 includes at least two antenna ports.

In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 901 and various circuits of memory represented by memory 903 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 902 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 904 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 901 is responsible for managing a bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.

Preferably, an embodiment of the present invention further provides a network device, which includes a processor 901, a memory 903, and a computer program stored in the memory 903 and capable of running on the processor 901, where the computer program is executed by the processor 901 to implement each process of the foregoing HARQ-ACK feedback method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the HARQ-ACK feedback method embodiment on the terminal side provided in the embodiment of the present invention, or when the computer program is executed by a processor, the computer program implements each process of the HARQ-ACK feedback method embodiment on the network device side provided in the embodiment of the present invention, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A HARQ-ACK feedback method for hybrid automatic repeat request acknowledgement (HARQ-ACK) is applied to a terminal and is characterized by comprising the following steps:

and feeding back the HARQ-ACK according to the DCI.

2. The method of claim 1, wherein the resource allocation domain comprises:

a time domain resource allocation, TDRA, domain and/or a frequency domain resource allocation, FDRA, domain.

3. The method of claim 1 or 2, wherein the resource indicated by the resource allocation field is empty or a preset value.

4. The method of claim 3, wherein in case the resource allocation domain is a TDRA domain:

5. The method of claim 3, wherein in case the resource allocation domain is an FDRA domain:

and the values of all bits of the bitmap of the FDRA domain are 0.

6. The method of claim 1 or 2, wherein the HARQ-ACK comprises:

at least one non-reported HARQ-ACK; or

HARQ-ACK corresponding to all configured processes; or

7. The method of claim 6, wherein the DCI indicates the process identity or process group identity through at least one of:

a virtual resource block VRB and physical resource block PRB mapping domain;

modulation coding scheme MCS domain;

the new data indicates the NDI field;

a Redundancy Version (RV) field;

HARQ process number field.

8. The method of claim 1 or 2, wherein the DCI further comprises feedback timing information and physical uplink control channel, PUCCH, resource allocation information, and the feeding back the HARQ-ACK according to the DCI comprises:

9. A HARQ-ACK feedback method is applied to network equipment and is characterized by comprising the following steps:

receiving the HARQ-ACK.

10. The method of claim 9, wherein the resource allocation domain comprises:

a TDRA domain and/or an FDRA domain.

11. The method of claim 9 or 10, wherein the resource indicated by the resource allocation field is empty or a preset value.

12. The method of claim 11, wherein in case the resource allocation domain is a TDRA domain:

13. The method of claim 11, wherein in case the resource allocation domain is an FDRA domain:

and the values of all bits of the bitmap of the FDRA domain are 0.

14. The method of claim 9 or 10, wherein the HARQ-ACK comprises:

at least one non-reported HARQ-ACK; or

HARQ-ACK corresponding to all configured processes; or

15. The method of claim 14, wherein the DCI indicates the process identity or process group identity through at least one of:

a VRB and PRB mapping domain;

an MCS domain;

an NDI domain;

an RV domain;

HARQ process number field.

16. The method of claim 9 or 10, wherein the DCI further comprises feedback timing information and PUCCH resource allocation information.

17. A terminal, comprising:

18. A network device, comprising:

a receiving module, configured to receive the HARQ-ACK.

19. A terminal, comprising: memory, processor and program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the HARQ-ACK feedback method according to any of claims 1 to 8.

20. A network device, comprising: memory, processor and program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the HARQ-ACK feedback method according to any of claims 9 to 16.

21. A computer readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the HARQ-ACK feedback method according to any one of claims 1 to 8, or which, when being executed by a processor, carries out the steps of the HARQ-ACK feedback method according to any one of claims 9 to 16.