CN111447686B - HARQ-ACK feedback method, terminal and network equipment - Google Patents

HARQ-ACK feedback method, terminal and network equipment Download PDF

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CN111447686B
CN111447686B CN201910118196.7A CN201910118196A CN111447686B CN 111447686 B CN111447686 B CN 111447686B CN 201910118196 A CN201910118196 A CN 201910118196A CN 111447686 B CN111447686 B CN 111447686B
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domain
harq
ack
resource allocation
dci
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CN111447686A (en
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李娜
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

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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 (Hybrid Automatic Repeat request Acknowledgement, HARQ-ACK) feedback method, a terminal, and a network device.
Background
A listen before talk (Listen Before Talk, LBT) detection is required by the terminal before feeding back HARQ-ACKs in the unlicensed band. For example: in the new air interface unlicensed (New Radio Unlicensed, NR-U) technology, a terminal needs to perform LBT detection before feeding back HARQ-ACK, and when detecting that a channel is in an idle state, HARQ-ACK may be transmitted, if the channel is busy, HARQ-ACK is not fed back, so that a network device may perform retransmission of a physical layer downlink shared channel (Physical downlink shared channel, PDSCH), but in reality, the terminal may have successfully received PDSCH, which may cause unnecessary retransmission of PDSCH, so that resource utilization is low.
Disclosure of Invention
The embodiment of the invention provides a HARQ-ACK feedback method, a terminal and network equipment, which are used for solving the problem of lower 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 (Downlink Control Information, DCI), the DCI comprising a resource allocation field for requesting or triggering the terminal to feed back HARQ-ACKs;
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:
transmitting 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;
and 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 domain, where the resource allocation domain is configured to request or trigger the terminal to feed back HARQ-ACK;
and a feedback module, configured to feed 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 domain, where the resource allocation domain is configured to request or trigger a terminal to feed back HARQ-ACK;
And the receiving module is used for receiving the HARQ-ACK.
In a fifth aspect, an embodiment of the present invention provides a terminal, including: the system comprises a memory, a processor and a program stored in the memory and capable of running on the processor, wherein the program realizes the steps in the HARQ-ACK feedback method at the terminal side 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 system comprises a memory, a processor and a program stored in the memory and capable of running on the processor, wherein the program realizes the steps in the HARQ-ACK feedback method at the network equipment 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, where the computer program when executed by a processor implements a step in a HARQ-ACK feedback method on a terminal side provided by an embodiment of the present invention, or where the computer program when executed by a processor implements a step in a HARQ-ACK feedback method on a network device side provided by an embodiment of the present invention.
In the embodiment of the invention, 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. In this way, more opportunities can be provided for HARQ-ACK feedback to reduce unnecessary retransmissions and thereby improve resource utilization.
Drawings
FIG. 1 is a block diagram of a network system to which embodiments of the present invention are applicable;
fig. 2 is a flowchart of a HARQ-ACK feedback method provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of HARQ-ACK feedback provided by an embodiment of the present invention;
fig. 4 is a schematic diagram of 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 block 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 according to 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 following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "comprises," "comprising," or any other variation thereof, 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 or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means at least one of the connected objects, e.g., a and/or B, meaning that it includes a single a, a single B, and that there are three cases of a and B.
In embodiments of the invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
Embodiments of the present invention are described below with reference to the accompanying drawings. The HARQ-ACK feedback method, the terminal and the network equipment provided by the embodiment of the invention can be applied to a wireless communication system. The wireless communication system may be a 5G system, or an evolved long term evolution (Evolved Long Term Evolution, elet) system, or a long term evolution (Long Term Evolution, LTE) system, or a subsequent evolved communication system, etc.
Referring to fig. 1, fig. 1 is a block 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 devices, for example: a terminal-side Device such as a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer), a personal digital assistant (personal digital assistant, PDA), a mobile internet Device (Mobile Internet Device, MID), a Wearable Device (weardable Device), or a robot, it should be noted that the 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 other communication systems, or referred to as a node B, an evolved node B, or a transmission receiving Point (Transmission Reception Point, TRP), or an Access Point (AP), or other words in the field, and the network device is not limited to a specific technical word as long as the same technical effect is achieved. In addition, the network device 12 may be a Master Node (MN) or a Secondary Node (SN). It should be noted that, in the embodiment of the present invention, only a 5G base station is taken as an example, but the specific type of the network device is not limited.
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, as shown in fig. 2, and includes the following steps:
step 201, receiving DCI, where the DCI includes a resource allocation domain, where the resource allocation domain 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 domain may be an information domain used 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 (Time domain resource assignment, TDRA) domain and/or a frequency domain resource allocation (frequency domain resource assignment, FDRA) domain.
In addition, the resource allocation domain is used for requesting or triggering the terminal to feed back the HARQ-ACK may be that bit information in the resource allocation domain is used for indicating the terminal to feed back the HARQ-ACK.
Further, the HARQ-ACK may include at least one of an HARQ-ACK not reported by the terminal, an HARQ-ACK indicated by the network device, and an HARQ-ACK corresponding to all configured processes.
Step 202, feeding back the HARQ-ACK according to the DCI.
The resource allocation domain is used for requesting or triggering the terminal to feed back the HARQ-ACK, so that 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 the HARQ-ACK which is not reported by the terminal, the HARQ-ACK indicated by the network equipment, the HARQ-ACK corresponding to all configured processes and the like.
Note that, in the embodiment of the present invention, HARQ-ACK may be fed back to PDSCH transmitted in downlink or PDCCH releasing Semi-persistent scheduling (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 PDSCH.
In the embodiment of the invention, the resource allocation domain of the DCI is used for requesting or triggering the terminal to feed back the HARQ-ACK, so that more opportunities for feeding back the HARQ-ACK can be provided for the terminal, unnecessary retransmission is reduced, and the resource utilization rate is further improved. For example: multiple opportunities can be provided for HARQ-ACK feedback, and PDSCH retransmission caused by LBT failure is avoided. In addition, for some PDSCHs where the network device does not indicate a valid feedback timing (e.g., invalid PDSCH-to-HARQ_feedback timing) at the time of scheduling, a way to trigger the HARQ-ACK feedback may be provided. Since a domain dedicated to indicate whether to request or trigger HARQ-ACK feedback is not required to be introduced, the size of DCI is advantageously reduced, and a new DCI format is not required to be introduced.
As an alternative embodiment, the DCI further includes feedback timing information and physical uplink control channel (Physical uplink shared channel, PUCCH) resource allocation information, and 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 of PDSCH to HARQ-ACK, for example: the feedback timing information may be a PDSCH-to-HARQ feedback timing indication (PDSCH-to-HARQ feedback timing indicator).
The above PUCCH resource allocation information may be used to instruct the terminal to feed back PUCCH resources of HARQ-ACK, for example: may be a PUCCH resource indication (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-ACKs may be fed back at the time and resources indicated by PDSCH-to-HARQ feedback timing indication (PDSCH-to-HARQ feedback timing indicator) and PUCCH resource indication (PUCCH resource indicator, PRI), for example: and feeding back at least one of the HARQ-ACK which is not reported by the terminal, the HARQ-ACK indicated by the network equipment, the HARQ-ACK corresponding to all configured processes and the like.
In this embodiment, since the DCI further includes feedback timing information and PUCCH resource allocation information, the terminal may feed back on a resource indicated by the network device, where the network device receives the feedback information, so as to save power consumption of the network device.
Note that, in the embodiment of the present invention, the resources for feeding back HARQ-ACK are not limited to being determined by the feedback timing information and PUCCH resource allocation information included in the DCI, for example: at least one of time and channel resources of the feedback HARQ-ACK may also be preconfigured or defined in a protocol, etc.
As an optional implementation manner, the resource indicated by the resource allocation domain is null or a preset value.
The preset value may be an invalid value, that is, an invalid PDSCH resource allocation, so as to request or trigger the terminal to feed back the HARQ-ACK. In particular, the values in the protocol existing table, or redefined specific values, are not values in the protocol existing table.
When the terminal receives the DCI, and determines that the resource indicated by the resource allocation domain is empty or a preset value, the resource allocation domain can be determined to be used for requesting or triggering the terminal to feed back the HARQ-ACK.
In this embodiment, since the resource indicated by the resource allocation domain is null or a preset value to request or trigger the terminal to feed back the HARQ-ACK, the DCI format does not need to be modified, so as to reduce complexity.
Optionally, in the case that the resource allocation domain is a TDRA domain:
The length of the PDSCH corresponding to the TDRA domain indicated value in the time domain resource allocation table is 0; or alternatively
The value indicated by the TDRA field 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.
The time domain resource allocation table may be an RRC configured or protocol defined time domain resource allocation table. In addition, the threshold 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 a different K0, start and length indication (start and length indicator, SLIV), or each row in the table may be directly the start symbol S and the allocation length L. The slot and allocation length L may be used to indicate a slot offset K0, a start symbol and a symbol length of the PDSCH with respect to the PDCCH, and the K0 may be 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 above-described time domain resource allocation table is exemplified in tables 1 to 4 below:
TABLE 1 default PDSCH time-domain resource allocation A (Default PDSCH time domain resource allocation A for normal CP) for normal Cyclic Prefix (CP)
Figure BDA0001970946850000071
Figure BDA0001970946850000081
Table 2: default PDSCH time domain resource allocation A (Default PDSCH time domain resource allocation A for extended CP) of extended CP
Figure BDA0001970946850000082
Figure BDA0001970946850000091
Table 3: default PDSCH time domain resource allocation B (Default PDSCH time domain resource allocation B)
Figure BDA0001970946850000092
Figure BDA0001970946850000101
Table 4: default PDSCH time domain resource allocation C (Default PDSCH time domain resource allocation C)
Figure BDA0001970946850000102
Figure BDA0001970946850000111
It should be noted that the above 4 tables are merely illustrative, and the embodiments of the present invention are not limited thereto.
The first information may be Reserved (Reserved) information in the time domain resource allocation table, that is, in the embodiment of the present invention, 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, in the embodiment of the present invention, this is not limited, for example: a row of definitions can be newly added to the time domain resource allocation table or a row of definitions can be newly interpreted, and the preset behavior value is used for indicating that the terminal is requested or triggered to feed back the HARQ-ACK, namely when the value indicated by the TDRA field corresponds to the value, the TDRA field is used for requesting or triggering the terminal to feed back the HARQ-ACK.
Since 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, a field dedicated for indicating whether to request or trigger HARQ-ACK feedback may not be introduced, which is beneficial to reducing the size of DCI.
Optionally, in the case that the resource allocation domain is a TDRA domain:
the value of the TDRA field indication corresponds to a first PDSCH time domain allocation value in a PDSCH time domain allocation list, the first PDSCH time domain allocation value representing 0 time domain resources.
The PDSCH time domain allocation list (PDSCH-time Domain Allocation List) may be configured by RRC, for example: PDSCH time domain allocation list (PDSCH-Time Domain Allocation List provided in PDSCH-Config Common) is provided in the PDSCH Common configuration or PDSCH time domain allocation list (PDSCH-Time Domain Allocation List provided in PDSCH-Config) is provided in the PDSCH configuration. In addition, there is one PDSCH time domain allocation (PDSCH-time Domain Allocation) value in the PDSCH time domain allocation list representing 0 time domain symbols, for example: 0 orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols or means invalid PDSCH allocation or triggering HARQ-ACK feedback. The TDRA field may thus indicate this value to request or trigger the terminal to feed back the HARQ-ACK. In this way, it is also possible to realize that there is no need to introduce a field dedicated to indicating whether to request or trigger HARQ-ACK feedback, which is advantageous for reducing the size of DCI.
Optionally, in the case that the resource allocation domain is an FDRA domain:
the value of all bits of the bitmap (bitmap) of the FDRA domain is 0.
In this embodiment, too, it may be achieved that a field dedicated to indicating whether to request or trigger HARQ-ACK feedback need not be introduced, which is beneficial to reduce the size of DCI.
As an alternative embodiment, the HARQ-ACK includes:
at least one unreported HARQ-ACK; or alternatively
HARQ-ACKs corresponding to all configured processes (processes); or alternatively
And the HARQ-ACK corresponding to the Process identification (Process ID) or the Process group identification (Process ID group) indicated by the DCI.
Further, the DCI may indicate the process identifier or the process group identifier through at least one of the following fields:
virtual resource blocks (Virtual Resource Block, VRBs) to physical resource blocks (Physical Resource Block, PRBs) mapping (i.e., VRB-to-PRB mapping) fields;
modulation coding scheme (Modulation and Coding Scheme, MCS) field;
the new data indicates (New data indicator, NDI) the field.
Redundancy version (Redundancy Version, RV) domain;
HARQ process number (i.e., HARQ process number) field. In this embodiment, since the at least one field indicates a process identifier or a process group identifier, a new field may not be needed to be newly introduced to indicate a process identifier or a process group identifier that triggers HARQ-ACK feedback, so as to save the DCI size.
The at least one unreported HARQ-ACK may be all or part of unreported HARQ-ACKs of the terminal. And the process of all the configurations may be a process of all the configurations of the terminal.
In addition, in this embodiment, the process identifier or the process group identifier may be indicated in the DCI, so that the terminal feeds back the HARQ-ACK of the corresponding process, so as to save transmission overhead.
In the embodiment of the invention, 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. In this way, more opportunities can be provided for HARQ-ACK feedback to reduce unnecessary retransmissions and thereby improve resource utilization.
The HARQ-ACK feedback method provided by the embodiment of the invention can provide a design method of DCI (downlink control information) for requesting or triggering HARQ-ACK feedback in NR-U and a behavior specification of a terminal. Specifically, the method comprises the following steps:
the time domain or frequency domain resource indicated by TDRA or FDRA in DCI for scheduling PDSCH by the network device is null (or is a preset value), specifically:
the TDRA indicates that the time domain resource is empty, and may be that the length of the value indicated by the TDRA domain corresponding to reserved or corresponding PDSCH in the time domain resource allocation table is 0;
The FDRA indicates that the time domain resource is null and that all bits of the bitmap, which may be the FDRA, are 0.
After the terminal receives the DCI, the UE determines the time and the PUCCH resources for feeding back the HARQ-ACK according to the PDSCH-to-HARQ feedback timing indication (PDSCH-to-HARQ_ feedback timing indicator) and the PUCCH Resource Indication (PRI) in the DCI, and performs the following feedback on the PUCCH resources:
the UE feeds back all the HARQ-ACKs which are not reported; or alternatively
The UE feeds back HARQ-ACK information corresponding to all the processes; or alternatively
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 PDSCH (PDSCH 1/2/3) and instructs it to feed back HARQ-ACK at PUCCH1, but when the terminal performs LBT before transmitting PUCCH1, it detects that the channel is busy, and thus cannot transmit HARQ-ACK feedback of these PDSCH. The network device triggers the terminal to feed back the failed HARQ-ACK feedback on PUCCH2 by sending PDCCH4, wherein the time domain resource and/or the frequency domain resource of the corresponding PDSCH indicated by TDRA and/or FDRA in PDCCH4 is null, and PUCCH time and resource of HARQ-ACK feedback are indicated by PRI and PDSCH-to-HARQ feedback timing indicator in PDCCH4 (the exact HARQ feedback timing and resource is provided to the terminal in the DCI). Specific:
When the frequency domain resource is empty and can be of a resource allocation type 0 (resource allocation type 0), all bit positions of the bitmap are 0;
the time domain resource being empty may be that the Row index (Row index) of the TDRA domain indication corresponds to reserved or that the corresponding L is 0.
After receiving the PDCCH4, the terminal feeds back the HARQ-ACK of the non-fed-back PDSCH1/2/3 according to the time and the resource indicated by the PDCCH 4. In addition, the PDCCH4 may also include a process ID(s) or a process ID group(s) triggered by the trigger, and the terminal feeds back the indicated process ID or the HARQ-ACK corresponding to the process ID group according to the indication of the network device. Since PDSCH scheduled by PDCCH4 is invalid at this time, some other fields in DCI are also invalid, such as information fields of VRB-to-PRB mapping, MCS and RV, HARQ process number, new data indicator, etc., and thus other interpretations may be made for these fields at this time, such as HARQ-ACK process ID(s) or HARQ-ACK process ID group(s) or channel occupancy time (Channel Occupancy Time, COT) information for indicating this DCI trigger.
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 transmit HARQ-ACK in PUCCH2, the network device may request or trigger the terminal to feedback HARQ-ACK again until the corresponding HARQ-ACK feedback is successfully received.
Example 2:
as shown in fig. 4, the network device schedules different PDSCH (PDSCH 1/2/3), and the HARQ feedback timing indication (PDSCH-to-harq_ feedback timing indicator) of PDSCH in its corresponding DCI does not give a specific value, but instructs the terminal to store its corresponding feedback HARQ-ACK first. The network device triggers the terminal to feed back these unsent HARQ-ACK feedback on PUCCH2 by sending PDCCH4, where the time domain resources and/or frequency domain resources indicated by TDRA and/or FDRA in PDCCH4 are empty (0 OFDM symbols (corresponding to reserved) or 0 PRB (all bits in bitmap are 0)), and the time and resources of HARQ-ACK feedback are indicated in PDCCH4 (the exact HARQ feedback timing and resource is provided to the terminal in the DCI). After receiving the PDCCH4, the terminal feeds back the HARQ-ACK of the non-fed-back PDSCH1/2/3 according to the time and the resource indicated by the PDCCH 4. In addition, the PDCCH4 may also include a process ID or a process ID group triggered by the PDCCH, and at this time, the terminal feeds back the indicated process ID or the HARQ-ACK corresponding to the process ID group according to the indication of the network device.
Embodiment III:
TDRA may indicate 0 time domain resources (i.e., the resources are empty) by:
In one mode: of the four tables provided above (e.g., default PDSCH time domain resource allocation A/B/C) one row in the table indicates that the PDSCH has a length of 0, and TDRA in DCI indicates this row
For example, for a default a (default a) table, a certain row in the table may be reinterpreted, which indicates that the PDSCH is 0 in length, e.g., row index=16, as follows:
Figure BDA0001970946850000151
for default B or C (default B/C), the reserved row in the table (default B table row index=16, default row index=6/7) may be redefined, which indicates that the PDSCH length is 0, which is used for HARQ-ACK feedback triggering, specifically as follows:
Figure BDA0001970946850000152
in another approach: one PDSCH time domain allocation (PDSCH-time Domain Allocation) in the RRC configured PDSCH time domain allocation list (PDSCH-time Domain Allocation List) represents 0 OFDM symbols. Specifically, a PDSCH time domain allocation list (PDSCH-Time Domain Allocation List provided in PDSCH-Config Common) is provided in the PDSCH Common configuration, or a PDSCH time domain allocation list (PDSCH-Time Domain Allocation List provided in PDSCH-Config) is provided in the PDSCH configuration.
The embodiment of the invention specifically discloses a DCI design method for requesting/triggering HARQ-ACK feedback in NRU and a behavior specification of a terminal, and specifically comprises the following steps:
The network equipment is empty in time domain/frequency domain resources indicated by TDRA or FDRA in DCI of the scheduling PDSCH;
after receiving the DCI, the terminal feeds back HARQ-ACK on the time and resource indicated by the DCI,
the terminal feeds back all the HARQ-ACKs which are not reported, or
The terminal feeds back the HARQ-ACK information corresponding to all the processes, or
If the DCI has a Process ID or a Process ID group indicating the trigger, the terminal uses 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 can provide multiple opportunities for HARQ-ACK feedback, avoids retransmission of a PDSCH caused by LBT failure or is used for triggering PDSCH scheduling feedback HARQ-ACK without specific feedback timing, does not need to introduce a domain specially used for indicating whether to trigger HARQ-ACK feedback, is beneficial to reducing the size of DCI or does not need to introduce a new DCI format.
Referring to fig. 5, fig. 5 is a flowchart of another HARQ-ACK feedback method according to an embodiment of the present invention, where the method is applied to a network device, as shown in fig. 5, and includes the following steps:
step 501, transmitting 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;
Step 502, receiving the HARQ-ACK.
Optionally, the resource allocation domain includes:
TDRA domain and/or FDRA domain.
Optionally, the resource indicated by the resource allocation domain is null or a preset value.
Optionally, in the case that the resource allocation domain is a TDRA domain:
the length of the PDSCH corresponding to the TDRA domain indicated value in the time domain resource allocation table is 0; or alternatively
The value indicated by the TDRA field 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 alternatively
The value of the TDRA field indication corresponds to a first PDSCH time domain allocation value in a PDSCH time domain allocation list, the first PDSCH time domain allocation value representing 0 time domain resources.
Optionally, in the case that the resource allocation domain is an FDRA domain:
the value of all bits of the bitmap of the FDRA domain is 0.
Optionally, the HARQ-ACK includes:
at least one unreported HARQ-ACK; or alternatively
HARQ-ACKs corresponding to all configured processes; or alternatively
And the HARQ-ACK corresponding to the process identifier indicated by the DCI or the process group identifier.
Optionally, the DCI indicates the process identity or process group identity by at least one of the following fields:
A VRB and PRB mapping domain;
MCS field;
NDI domain;
RV domain;
HARQ process number field.
Optionally, the DCI further includes feedback timing information and PUCCH resource allocation information.
It should be noted that, as an implementation manner of the network device corresponding to the embodiment shown in fig. 2, a specific implementation manner of the embodiment may refer to a related description of the embodiment shown in fig. 2, so that in order to avoid repeated description, the embodiment is not described again, and the same beneficial effects may be achieved.
Referring to fig. 6, fig. 6 is a block 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 domain, where the resource allocation domain is configured 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:
TDRA domain and/or FDRA domain.
Optionally, the resource indicated by the resource allocation domain is null or a preset value.
Optionally, in the case that the resource allocation domain is a TDRA domain:
the length of the physical downlink shared channel PDSCH corresponding to the value indicated by the TDRA domain in the time domain resource allocation table is 0; or alternatively
The value indicated by the TDRA field 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 alternatively
The value of the TDRA field indication corresponds to a first PDSCH time domain allocation value in a PDSCH time domain allocation list, the first PDSCH time domain allocation value representing 0 time domain resources.
Optionally, in the case that the resource allocation domain is an FDRA domain:
the value of all bits of the bitmap of the FDRA field is 0.
Optionally, the HARQ-ACK includes:
at least one unreported HARQ-ACK; or alternatively
HARQ-ACKs corresponding to all configured processes; or alternatively
And the HARQ-ACK corresponding to the process identifier indicated by the DCI or the process group identifier.
Optionally, the DCI indicates the process identity or process group identity by at least one of the following fields:
a VRB and PRB mapping domain;
MCS field;
NDI domain;
RV domain;
HARQ process number field.
Optionally, the DCI further includes feedback timing information and physical uplink control channel PUCCH resource allocation information, and the feedback module 602 is configured to feedback the HARQ-ACK according to the feedback timing information and the PUCCH resource allocation information.
The terminal provided by the embodiment of the invention can realize each process realized by the terminal in the embodiment of the method of fig. 2, so that repetition is avoided, the description is omitted here, and the resource utilization rate can be improved.
Referring to fig. 7, fig. 7 is a block diagram of a network device according to an embodiment of the present invention, 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 domain, where the resource allocation domain is configured 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:
TDRA domain and/or FDRA domain.
Optionally, the resource indicated by the resource allocation domain is null or a preset value.
Optionally, in the case that the resource allocation domain is a TDRA domain:
the length of the PDSCH corresponding to the TDRA domain indicated value in the time domain resource allocation table is 0; or alternatively
The value indicated by the TDRA field 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 alternatively
The value of the TDRA field indication corresponds to a first PDSCH time domain allocation value in a PDSCH time domain allocation list, the first PDSCH time domain allocation value representing 0 time domain resources.
Optionally, in the case that the resource allocation domain is an FDRA domain:
the value of all bits of the bitmap of the FDRA field is 0.
Optionally, the HARQ-ACK includes:
at least one unreported HARQ-ACK; or alternatively
HARQ-ACKs corresponding to all configured processes; or alternatively
And the HARQ-ACK corresponding to the process identifier indicated by the DCI or the process group identifier.
Optionally, the DCI indicates the process identity or process group identity by at least one of the following fields:
a VRB and PRB mapping domain;
MCS field;
NDI domain;
RV domain;
HARQ process number field.
Optionally, the DCI further includes feedback timing information and PUCCH resource allocation information.
The network device provided by the embodiment of the present invention can implement each process implemented by the network device in the method embodiment of fig. 5, so that repetition is avoided, and details are omitted here, and the resource utilization rate can be improved.
Figure 8 is a schematic diagram of a hardware architecture of a terminal implementing various embodiments of the present invention,
the terminal 800 includes, but is not limited to: radio frequency unit 801, network module 802, audio output unit 803, input unit 804, sensor 805, display unit 806, user input unit 807, interface unit 808, memory 809, processor 810, and power supply 811. It will be appreciated by those skilled in the art that the terminal structure shown in fig. 8 is not limiting of the terminal and that the terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. In the embodiment of the invention, the terminal comprises, 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 domain, where the resource allocation domain is configured 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:
TDRA domain and/or FDRA domain.
Optionally, the resource indicated by the resource allocation domain is null or a preset value.
Optionally, in the case that the resource allocation domain is a TDRA domain:
the length of the physical downlink shared channel PDSCH corresponding to the value indicated by the TDRA domain in the time domain resource allocation table is 0; or alternatively
The value indicated by the TDRA field 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 alternatively
The value of the TDRA field indication corresponds to a first PDSCH time domain allocation value in a PDSCH time domain allocation list, the first PDSCH time domain allocation value representing 0 time domain resources.
Optionally, in the case that the resource allocation domain is an FDRA domain:
the value of all bits of the bitmap of the FDRA field is 0.
Optionally, the HARQ-ACK includes:
at least one unreported HARQ-ACK; or alternatively
HARQ-ACKs corresponding to all configured processes; or alternatively
And the HARQ-ACK corresponding to the process identifier indicated by the DCI or the process group identifier.
Optionally, the DCI indicates the process identity or process group identity by at least one of the following fields:
a VRB and PRB mapping domain;
MCS field;
NDI domain;
RV domain;
HARQ process number field.
Optionally, the DCI further includes feedback timing information and physical uplink control channel PUCCH resource allocation information, and 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 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 transmitting signals during the process of receiving and transmitting information or communication, specifically, receiving downlink data from a base station, and then processing the received downlink data by the processor 810; and, the uplink data is transmitted to the base station. In general, the 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. In addition, the radio frequency unit 801 may also communicate with networks 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 to send and receive e-mail, browse web pages, access streaming media, etc.
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 (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal 800. 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 processor (Graphics Processing Unit, GPU) 8041 and a microphone 8042, the graphics processor 8041 processing image data of still pictures or video obtained by an image capturing apparatus (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 that can be transmitted to the mobile communication base station via the radio frequency unit 801 in case of a telephone call mode.
The terminal 800 also includes at least one sensor 805 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 8061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 8061 and/or the backlight when the terminal 800 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 terminal 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; the sensor 805 may also 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 806 is used to display information input by a user or information provided to the user. 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 (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 807 is operable to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the terminal. In particular, the user input unit 807 includes a touch panel 8071 and other input devices 8072. Touch panel 8071, 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 8071 or thereabout using any suitable object or accessory such as a finger, stylus, etc.). The touch panel 8071 may include two parts, 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 it into touch point coordinates, sends the touch point coordinates to the processor 810, and receives and executes commands sent from the processor 810. In addition, the touch panel 8071 may be implemented in various types such as resistive, capacitive, infrared, and 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, physical keyboards, function keys (e.g., volume control keys, switch keys, etc.), trackballs, mice, joysticks, and so forth, which are not described in detail herein.
Further, the touch panel 8071 may be overlaid on the display panel 8061, and when the touch panel 8071 detects a touch operation thereon or thereabout, the touch operation is transmitted to the processor 810 to determine a type of touch event, and then the processor 810 provides a corresponding visual output on the display panel 8061 according to the type of 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 to which an external device is connected to the terminal 800. For example, the external devices may include a wired or wireless headset port, an external power (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 an external device 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 an external device.
The memory 809 can be used to store software programs as well as various data. The memory 809 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory 809 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 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 running or executing software programs and/or modules stored in the memory 809 and calling data stored in the memory 809, thereby performing overall monitoring of the terminal. The processor 810 may include one or more processing units; preferably, the processor 810 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 810.
Terminal 800 may also include a power supply 811 (e.g., a battery) for powering the various components, and preferably, power supply 811 may be logically coupled to processor 810 through a power management system that provides for managing charge, discharge, and power consumption.
In addition, the terminal 800 includes some functional modules, which are not shown, and will not be described herein.
Preferably, the embodiment of the present invention further provides a terminal, which includes 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 when executed by the processor 810 implements each process of the above embodiment of the HARQ-ACK feedback method, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein.
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: processor 901, transceiver 902, memory 903, and bus interface, wherein:
a transceiver 902 configured to send DCI, where the DCI includes a resource allocation domain, where the resource allocation domain is configured to request or trigger a terminal to feed back HARQ-ACKs;
the transceiver 902 is further configured to receive the HARQ-ACK.
Optionally, the resource allocation domain includes:
TDRA domain and/or FDRA domain.
Optionally, the resource indicated by the resource allocation domain is null or a preset value.
Optionally, in the case that the resource allocation domain is a TDRA domain:
the length of the PDSCH corresponding to the TDRA domain indicated value in the time domain resource allocation table is 0; or alternatively
The value indicated by the TDRA field 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 alternatively
The value of the TDRA field indication corresponds to a first PDSCH time domain allocation value in a PDSCH time domain allocation list, the first PDSCH time domain allocation value representing 0 time domain resources.
Optionally, in the case that the resource allocation domain is an FDRA domain:
the value of all bits of the bitmap of the FDRA field is 0.
Optionally, the HARQ-ACK includes:
at least one unreported HARQ-ACK; or alternatively
HARQ-ACKs corresponding to all configured processes; or alternatively
And the HARQ-ACK corresponding to the process identifier indicated by the DCI or the process group identifier.
Optionally, the DCI indicates the process identity or process group identity by at least one of the following fields:
A VRB and PRB mapping domain;
MCS field;
NDI domain;
RV domain;
HARQ process number field.
Optionally, the DCI further includes feedback timing information and physical uplink control channel PUCCH resource allocation information.
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, the transceiver 902 comprising at least two antenna ports.
In fig. 9, a bus architecture may comprise any number of interconnected buses and bridges, with various circuits of the one or more processors, represented in particular by processor 901, and the memory, represented by memory 903, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 902 may be a number of elements, i.e., include a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 904 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 901 is responsible for managing the bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.
Preferably, the 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 when executed by the processor 901 implements each process of the above embodiment of the HARQ-ACK feedback method, and can achieve the same technical effects, and for avoiding repetition, a detailed description is omitted herein.
The embodiment of the invention also provides a computer readable storage medium, and the computer readable storage medium stores a computer program, which when executed by a processor, implements each process of the embodiment of the HARQ-ACK feedback method at the terminal side provided by the embodiment of the invention, or implements each process of the embodiment of the HARQ-ACK feedback method at the network device side provided by the embodiment of the invention when executed by the processor, and can achieve the same technical effect, so that repetition is avoided and redundant description is omitted. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or 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 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 instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present invention.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.

Claims (19)

1. The HARQ-ACK feedback method is applied to a terminal and is characterized by comprising the following steps:
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;
feeding back the HARQ-ACK according to the DCI;
wherein the resource allocation domain comprises:
the time domain resource allocation TDRA domain and/or the frequency domain resource allocation FDRA domain.
2. The method of claim 1, wherein the resource indicated by the resource allocation domain is null or a preset value.
3. The method of claim 2, wherein in the case where the resource allocation domain is a TDRA domain:
the length of the physical downlink shared channel PDSCH corresponding to the value indicated by the TDRA domain in the time domain resource allocation table is 0; or alternatively
The value indicated by the TDRA field 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 alternatively
The value of the TDRA field indication corresponds to a first PDSCH time domain allocation value in a PDSCH time domain allocation list, the first PDSCH time domain allocation value representing 0 time domain resources.
4. The method of claim 3, wherein in the case where the resource allocation domain is an FDRA domain:
the value of all bits of the bitmap of the FDRA domain is 0.
5. The method of claim 1, wherein the HARQ-ACK comprises:
at least one unreported HARQ-ACK; or alternatively
HARQ-ACKs corresponding to all configured processes; or alternatively
And the HARQ-ACK corresponding to the process identifier indicated by the DCI or the process group identifier.
6. The method of claim 5, wherein the DCI indicates the process identity or process group identity by at least one of:
virtual Resource Block (VRB) and Physical Resource Block (PRB) mapping fields;
modulation Coding Scheme (MCS) domain;
the new data indicates NDI fields;
redundancy version RV domain;
HARQ process number field.
7. The method of claim 1, wherein the DCI further includes feedback timing information and physical uplink control channel, PUCCH, resource allocation information, the feeding back the HARQ-ACK according to the DCI, comprising:
And feeding back the HARQ-ACK according to the feedback timing information and the PUCCH resource allocation information.
8. The HARQ-ACK feedback method is applied to network equipment and is characterized by comprising the following steps:
transmitting 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;
wherein the resource allocation domain comprises:
TDRA domain and/or FDRA domain.
9. The method of claim 8, wherein the resource indicated by the resource allocation domain is null or a preset value.
10. The method of claim 9, wherein, in the case where the resource allocation domain is a TDRA domain:
the length of the PDSCH corresponding to the TDRA domain indicated value in the time domain resource allocation table is 0; or alternatively
The value indicated by the TDRA field 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 alternatively
The value of the TDRA field indication corresponds to a first PDSCH time domain allocation value in a PDSCH time domain allocation list, the first PDSCH time domain allocation value representing 0 time domain resources.
11. The method of claim 9, wherein, in the case where the resource allocation domain is an FDRA domain:
The value of all bits of the bitmap of the FDRA field is 0.
12. The method of claim 8, wherein the HARQ-ACK comprises:
at least one unreported HARQ-ACK; or alternatively
HARQ-ACKs corresponding to all configured processes; or alternatively
And the HARQ-ACK corresponding to the process identifier indicated by the DCI or the process group identifier.
13. The method of claim 12, wherein the DCI indicates the process identity or process group identity by at least one of:
a VRB and PRB mapping domain;
MCS field;
NDI domain;
RV domain;
HARQ process number field.
14. The method of claim 8, wherein the DCI further includes feedback timing information and PUCCH resource allocation information.
15. A terminal, comprising:
a receiving module, configured to receive DCI, where the DCI includes a resource allocation domain, where the resource allocation domain is configured to request or trigger the terminal to feed back HARQ-ACK;
a feedback module, configured to feedback the HARQ-ACK according to the DCI;
wherein the resource allocation domain comprises:
TDRA domain and/or FDRA domain.
16. A network device, comprising:
a sending module, configured to send DCI, where the DCI includes a resource allocation domain, where the resource allocation domain is configured to request or trigger a terminal to feed back HARQ-ACK;
A receiving module, configured to receive the HARQ-ACK;
wherein the resource allocation domain comprises:
TDRA domain and/or FDRA domain.
17. A terminal, comprising: a memory, a processor and a 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 7.
18. A network device, comprising: memory, a processor and a 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 8 to 14.
19. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps in the HARQ-ACK feedback method according to any of claims 1 to 7 or which, when executed by a processor, implements the steps in the HARQ-ACK feedback method according to any of claims 8 to 14.
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