CN113472487A

CN113472487A - HARQ-ACK feedback triggering method, feedback method and device

Info

Publication number: CN113472487A
Application number: CN202010238966.4A
Authority: CN
Inventors: 李娜; 潘学明; 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2021-10-01
Anticipated expiration: 2040-03-30
Also published as: WO2021197202A1; CN113472487B

Abstract

The embodiment of the invention provides a triggering method, a feedback method and equipment for HARQ-ACK feedback, wherein the triggering method comprises the following steps: transmitting DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel; or configuring the terminal with the periodic information of HARQ-ACK corresponding to the downlink channel fed back by the terminal, wherein the periodic information is used for triggering the terminal to feed back the HARQ-ACK of the downlink channel scheduled in the first time period on the target time domain resource; in the embodiment of the invention, the network side equipment triggers the specific terminal to feed back the HARQ-ACK of the downlink channel through DCI or configured period information according to requirements, thereby not only adapting to the broadcast or multicast service characteristics, but also saving the feedback overhead.

Description

HARQ-ACK feedback triggering method, feedback method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for triggering HARQ-ACK feedback, a method for feedback, and a device for feedback.

Background

In the prior art, a terminal needs to perform Hybrid Automatic Repeat Request acknowledgement (HARQ-ACK) feedback on a Physical Downlink Shared Channel (PDSCH) for Downlink transmission or a Physical Downlink Control Channel (PDCCH) for releasing a Semi-Persistent Scheduling (SPS) PDSCH or a PDCCH (SCell Downlink indication without PDSCH Scheduling) indicating that a secondary cell (SCell) sleeps and does not schedule the PDSCH. The HARQ-ACK feedback is transmitted on a Physical Uplink Control Channel (PUCCH). For example, the terminal receives the PDSCH in slot n, and then feeds back HARQ-ACK in slot n + k1, where k1 is indicated by the PDCCH scheduling the PDSCH, and the value range of k1 is configured by Radio Resource Control (RRC). On the base station side, the base station receives the corresponding HARQ-ACK feedback information at the corresponding time position, and if the base station does not receive the corresponding HARQ-ACK feedback, the base station considers that the terminal does not receive the PDCCH for scheduling the PDSCH and needs to retransmit the PDSCH.

In the HARQ-ACK mechanism in the prior art, each PDSCH corresponds to one HARQ-ACK feedback information, which increases feedback overhead. In addition, the main purpose of the existing HARQ-ACK feedback mechanism is PDSCH retransmission, but for broadcast or multicast traffic, the PDSCH thereof does not necessarily need retransmission, and thus the existing HARQ-ACK mechanism is not suitable for the characteristics of the broadcast or multicast traffic.

Disclosure of Invention

The embodiment of the invention provides a triggering method, a feedback method and equipment for HARQ-ACK feedback, and aims to solve the problem that a HARQ-ACK feedback mechanism in the prior art is not suitable for broadcasting or multicasting service characteristics.

In order to solve the above technical problem, the embodiment of the present invention is implemented as follows: a method for triggering HARQ-ACK feedback of hybrid automatic repeat request response is applied to network side equipment and comprises the following steps:

sending downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel;

alternatively, the first and second electrodes may be,

and configuring the periodic information of HARQ-ACK corresponding to the downlink channel fed back by the terminal for the terminal, wherein the periodic information is used for triggering the terminal to feed back the HARQ-ACK of the downlink channel scheduled in the first time period on the target time domain resource.

The embodiment of the invention also provides a method for triggering hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback, which is applied to a terminal and comprises the following steps:

receiving downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel;

alternatively, the first and second electrodes may be,

and receiving the period information of the HARQ-ACK corresponding to the feedback downlink channel configured by the network side equipment, wherein the period information is used for triggering the terminal to feed back the HARQ-ACK of the downlink channel scheduled in the first time period on the target time domain resource.

The embodiment of the invention also provides a feedback method of hybrid automatic repeat request-acknowledgement HARQ-ACK, which is applied to a terminal and comprises the following steps:

feeding back M-bit HARQ-ACK information corresponding to the N downlink channels to network side equipment;

wherein N is an integer greater than or equal to 1, and M is an integer less than N.

The embodiment of the invention also provides a feedback method of hybrid automatic repeat request-acknowledgement HARQ-ACK, which is applied to network side equipment and comprises the following steps:

receiving M-bit HARQ-ACK information corresponding to N downlink channels fed back by a terminal;

An embodiment of the present invention further provides a network side device, including:

the first trigger module is used for sending downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel;

or, configuring the periodic information of the HARQ-ACK corresponding to the downlink channel fed back by the terminal for the terminal, where the periodic information is used to trigger the terminal to feed back the HARQ-ACK of the downlink channel scheduled in the first time period on the target time domain resource.

An embodiment of the present invention further provides a terminal, including:

the second trigger module is used for receiving downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel;

or, the method is used for receiving the period information of the HARQ-ACK corresponding to the feedback downlink channel configured by the network side device, where the period information is used to trigger the terminal to feed back the HARQ-ACK of the downlink channel scheduled in the first time period on the target time domain resource.

The embodiment of the invention also provides a terminal, comprising;

the feedback module is used for feeding back M-bit HARQ-ACK information corresponding to the N downlink channels to the network side equipment;

the feedback receiving module is used for receiving M-bit HARQ-ACK information corresponding to the N downlink channels fed back by the terminal;

The embodiment of the present invention further provides a communication device, which includes a processor, a memory, and a computer program stored in the memory and operable on the processor, where the computer program, when executed by the processor, implements the steps of the method for triggering HARQ-ACK feedback according to the above-mentioned HARQ-ACK feedback; alternatively, the computer program realizes the steps of the feedback method of hybrid automatic repeat request acknowledgement, HARQ-ACK as described above when being executed by the processor.

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 method for triggering HARQ-ACK feedback according to the foregoing hybrid automatic repeat request acknowledgement is implemented; alternatively, the computer program realizes the steps of the feedback method of hybrid automatic repeat request acknowledgement, HARQ-ACK as described above when executed by a processor.

On one hand, in the embodiment of the invention, the network side equipment triggers the specific terminal to feed back the HARQ-ACK of the downlink channel through DCI or configured period information according to the requirement, thereby not only adapting to the broadcast or multicast service characteristics, but also saving the feedback overhead; on the other hand, in the embodiment of the invention, the terminal feeds back the M-bit HARQ-ACK information corresponding to the N downlink channels in a compression mode, so that the aim of saving feedback overhead can be further achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic diagram illustrating a step of a method for triggering HARQ-ACK feedback according to an embodiment of the present invention;

fig. 2 is a diagram illustrating an example of periodic triggering in a method for triggering HARQ-ACK feedback according to an embodiment of the present invention;

fig. 3 is a second schematic diagram illustrating the steps of the method for triggering HARQ-ACK feedback according to the embodiment of the present invention;

FIG. 4 is a schematic diagram of a first method of example three provided by embodiments of the present invention;

fig. 5 is a schematic diagram of a second method according to a third example of the present invention;

fig. 6 is a schematic diagram illustrating a step of a feedback method for HARQ-ACK according to an embodiment of the present invention;

fig. 7 is a second schematic diagram illustrating the steps of a feedback method for HARQ-ACK according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 10 is a second schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 11 is a second schematic structural diagram of a network-side device according to an embodiment of the present invention;

fig. 12 is a third schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 13 is a third schematic structural diagram of a network-side 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.

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 terminal provided by the embodiment of the invention can be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, a Wearable Device, a vehicle-mounted Device or a Personal Digital Assistant (PDA), and the like. It should be noted that the specific type of the terminal is not limited in the embodiment of the present invention. The network side device may be a base station, where the base station may be a commonly used base station, may also be an evolved node base station (eNB), and may also be a network side device in a 5G system (for example, a next generation base station (gNB), a Transmission and Reception Point (TRP), a cell, or other devices).

As shown in fig. 1, an embodiment of the present invention provides a method for triggering HARQ-ACK feedback for HARQ-arq, which is applied to a network device, and includes:

step 101, sending downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel;

or configuring the terminal with the period information of the HARQ-ACK corresponding to the downlink channel fed back by the terminal, wherein the period information is used for triggering the terminal to feed back the HARQ-ACK of the downlink channel scheduled in the first time period on the target time domain resource.

Optionally, one DCI may trigger one or more terminals to feed back HARQ-ACKs corresponding to a downlink channel; and each terminal can also feed back HARQ-ACK corresponding to one or more downlink channels.

As an alternative embodiment, the method further comprises:

and receiving HARQ-ACK (hybrid automatic repeat request-acknowledgement) of the downlink channel scheduled in the first time period fed back to the network side equipment by the terminal on the target time domain resource.

The HARQ-ACK period information corresponding to the feedback downlink channel configured for the terminal by the network side device includes: a feedback period and a target time domain resource (time slot or sub-time slot). And after receiving the periodic information configured by the network side equipment, the terminal feeds back the HARQ-ACK of the downlink channel scheduled in the first time period on the target time domain resource. Here, since the PDSCH processing requires time, the HARQ-ACK may not be fed back immediately after receiving the PDSCH, but a certain processing time is required, as shown in fig. 2, the first time period is a forward offset T1 with respect to the starting symbol of the feedback slot or sub-slot or PUCCH feeding back the HARQ-ACK. Optionally, the value of T1 may be a predefined or high-level configuration, and optionally, T1 may be 0.

It should be noted that the PDSCH scheduled in the first time period may be any of the following:

a starting symbol of the PDSCH is located in a first time period;

an end symbol of the PDSCH is located in a first time period;

the PDSCH starting symbol and the PDSCH ending symbol are positioned in a first time period;

a starting symbol of a PDCCH for scheduling a PDSCH is positioned in a first time period;

an end symbol of a PDCCH for scheduling a PDSCH is located in a first time period;

a starting symbol and an ending symbol of a PDCCH for scheduling the PDSCH are positioned in a first time period;

the PDCCH scheduling the PDSCH and the start and end symbols of the PDSCH are located in the first time period.

As an optional embodiment, the sending the downlink control information DCI includes:

transmitting group common DCI; the group of common DCI is DCI of one broadcast or multicast service;

the group of common DCI is used for triggering a terminal receiving the group of common DCI to feed back HARQ-ACK corresponding to a downlink channel; triggering all terminals receiving the broadcast or multicast service or all terminals receiving the DCI to feed back HARQ-ACK through the group common DCI;

or the group of common DCI is used for triggering terminals contained in at least one subset to feed back HARQ-ACK corresponding to a downlink channel, wherein the terminals receiving the group of common DCI are divided into at least two subsets; namely, all terminals receiving the group common DCI or all terminals receiving the broadcast or multicast service are divided into a plurality of subsets, each subset comprises one or more terminals, and the terminals of one or more subsets are triggered to feed back HARQ-ACK through the group common DCI.

As another optional embodiment, the DCI comprises: DCI for scheduling a downlink channel (optionally, the downlink channel is PDSCH); alternatively, the DCI not used for scheduling the downlink channel (optionally, the downlink channel is the PDSCH) may also be referred to as the DCI of the non-scheduled PDSCH.

And if the DCI is the DCI for scheduling the PDSCH, when the terminal equipment receives the PDSCH, and if the network side equipment does not trigger the HARQ-ACK feedback of the PDSCH, the terminal does not feed back the HARQ-ACK corresponding to the PDSCH temporarily.

And if the DCI is the DCI of the non-scheduling PDSCH, for the PDSCH, after the terminal receives the multicast PDSCH every time, the terminal does not feed back HARQ-ACK of the PDSCH until the network side equipment is triggered by the DCI of the non-scheduling PDSCH.

As an alternative embodiment of the invention, the method further comprises:

and receiving HARQ-ACK corresponding to at least one downlink channel triggered by the DCI fed back by the terminal.

Wherein the at least one downlink channel triggered by the DCI comprises at least one of the following:

a Physical Downlink Shared Channel (PDSCH) scheduled by the terminal in a second time period;

a Physical Downlink Control Channel (PDCCH) for releasing the semi-statically scheduled PDSCH in a second time period;

and indicating that the secondary cell is sleeping (SCell dormant) and no PDCCH for scheduling the PDSCH is used in the second time period.

It should be noted that the PDSCH scheduled by the terminal in the second time period may be any of the following:

the starting symbol of the PDSCH is located in a second time period;

an end symbol of the PDSCH is located in a second time period;

the PDSCH starting symbol and the PDSCH ending symbol are positioned in a second time period;

the starting symbol of the PDCCH for scheduling the PDSCH is positioned in a second time period;

an end symbol of a PDCCH for scheduling the PDSCH is located in a second time period;

the starting symbol and the ending symbol of the PDCCH for scheduling the PDSCH are positioned in a second time period;

the PDCCH scheduling the PDSCH and the start and end symbols of the PDSCH are located in the second time period.

Further, if the DCI is a DCI for scheduling a downlink channel, the at least one downlink control channel triggered by the DCI further includes:

a PDSCH scheduled by the DCI.

Wherein the second time period comprises any one of:

a target time length before a start symbol or an end symbol of a control resource set in which the DCI is located;

the time length from the DCI triggering the HARQ-ACK feedback last time to the DCI currently triggering the HARQ-ACK feedback.

As an optional embodiment, the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

PDSCH scheduled by DCI of a target control resource set CORESET;

PDSCH of DCI of a target search space (search space);

a target type of PDSCH; the type of PDSCH may include a multicast type and a unicast type; wherein the target type of PDSCH may be at least one of: multicast PDSCH, PDSCH used for transmitting multimedia broadcast multicast service;

a PDSCH that satisfies PDSCH processing time requirements; and the PDSCH processing time is a time interval from a transmission end symbol of the PDSCH to an uplink transmission starting symbol of the HARQ-ACK feedback.

It should be noted that the multicast PDSCH in the embodiment of the present invention mainly indicates a PDSCH transmitted to multiple terminals through the same physical resource, and may also be a broadcast (broadcast) PDSCH or a multicast (multicast) PDSCH.

In summary, in the embodiment of the present invention, the network side device triggers the specific terminal to feed back the HARQ-ACK of the downlink channel through the DCI or the configured period information according to the requirement, and specifies which downlink channel HARQ-ACKs are fed back by the terminal, which can not only adapt to broadcast or multicast service characteristics, but also save feedback overhead.

As shown in fig. 3, an embodiment of the present invention further provides a method for triggering HARQ-ACK feedback for HARQ-arq, which is applied to a terminal, and includes:

step 301, receiving downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel;

or receiving the period information of the HARQ-ACK corresponding to the feedback downlink channel configured by the network side equipment, wherein the period information is used for triggering the terminal to feed back the HARQ-ACK of the downlink channel scheduled in the first time period on the target time domain resource.

As an alternative embodiment, the method further comprises:

and according to the period information, feeding back the HARQ-ACK of the downlink channel scheduled in the first time period to the network side equipment on the target time domain resource.

The HARQ-ACK period information corresponding to the feedback downlink channel configured for the terminal by the network side device includes: a feedback period and a target time domain resource (time slot or sub-time slot). And after receiving the periodic information configured by the network side equipment, the terminal feeds back the HARQ-ACK of the downlink channel scheduled in the first time period on the target time domain resource. However, since the PDSCH processing requires time, the HARQ-ACK is not fed back immediately after receiving the PDSCH, but requires a certain processing time, and as shown in fig. 2, the first time period is T1 offset forward from the starting symbol of the PUCCH fed back by the feedback slot or sub-slot or the HARQ-ACK. Optionally, the value of T1 may be a predefined or high-level configuration, and optionally, T1 may be 0.

a starting symbol of the PDSCH is located in a first time period;

an end symbol of the PDSCH is located in a first time period;

As an alternative embodiment, the DCI is a group common DCI; the set of common DCIs is DCI for one broadcast or multicast service.

As an alternative embodiment of the invention, the method further comprises:

and feeding back HARQ-ACK corresponding to at least one downlink channel triggered by the DCI to network side equipment.

the starting symbol of the PDSCH is located in a second time period;

an end symbol of the PDSCH is located in a second time period;

a PDSCH scheduled by the DCI.

Wherein the second time period comprises any one of:

As an optional embodiment, the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

PDSCH scheduled by DCI of a target control resource set CORESET;

a DCI-scheduled PDSCH of a target search space (search space);

In order to describe the triggering method for specifying HARQ-ACK feedback more clearly, the following describes in detail with reference to several examples.

Example 1

And the base station triggers all terminals (optional terminals supporting the multicast PDSCH or terminals receiving the group of common PDCCH) to feed back the HARQ-ACK through the group common PDCCH (carrying the group common DCI).

For example, the base station sends a DCI, the DCI is a group common DCI, and a specific field is included in the DCI for triggering the terminal to feed back HARQ-ACK. For example, the specific field may be a newly introduced field, such as an X-bit HARQ-ACK feedback trigger indication, or a specific state or combination using an existing field, such as a field of frequency domain resource allocation FDRA, redundancy version RV, HARQ process number, PDSCH-to-HARQ feedback time domain indication, etc.

For another example, the base station schedules the transmission of the broadcast/multicast downlink service data through a certain DCI format, and all terminals interested in the broadcast/multicast in the cell can receive the DCI and receive the PDSCH scheduled by the DCI. The DCI includes a 1-bit HARQ-ACK trigger field, and when the bit is 0, it indicates that the terminal temporarily does not need to feed back HARQ-ACK feedback of the PDSCH, and when the bit is 1, it indicates that the terminal needs to feed back HARQ-ACK feedback of the PDSCH and other PDSCHs (if any). Or the DCI includes a PDSCH-to-HARQ feedback time domain indication field for indicating a time interval from the PDSCH to the corresponding HARQ-ACK feedback, when the field indicates a specific value (for example, the indicated state is a non-numerical value), it indicates that the terminal temporarily does not need to feed back HARQ-ACK information of the PDSCH, and when the field indicates other values, it indicates that the terminal needs to feed back HARQ-ACK information of the PDSCH and other PDSCHs. That is to say, when the multicast PDSCH is scheduled, if the base station does not instruct/trigger HARQ-ACK feedback, the terminal does not feed back HARQ-ACK information corresponding to its PDSCH for a while until the base station instructs/triggers the terminal to feed back HARQ-ACK information.

For another example, the base station schedules broadcast/multicast downlink service data transmission through a certain DCI format, and when scheduling each multicast PDSCH transmission, the base station does not need to indicate PDSCH HARQ-ACK feedback related information, and when receiving the PDSCH, the base station does not need to feed back HARQ-ACK of the multicast PDSCH temporarily. The base station triggers the terminal to feed back the HARQ-ACK feedback of the previously scheduled multicast PDSCH through the DCI of another non-scheduled PDSCH, and indicates the information related to the HARQ-ACK feedback in the DCI of the non-scheduled PDSCH (optionally, such as PDSCH-to-HARQ feedback time domain indication, PUCCH resource indication PRI, transmission power control TPC for transmitting PUCCH, etc.)

For another example, the multicast PDSCH is transmitted only on specific time domain resources (e.g., time domain resources configured by higher layer signaling), and dynamic scheduling of the PDCCH is not required, so that the terminal does not need to feed back HARQ-ACK temporarily after receiving the PDSCH. The base station transmitting DCI (e.g., group common PDCCH or terminal specific PDCCH) triggers the terminal to feed back HARQ-ACK information for the previously scheduled multicast PDSCH.

In the above example, the PUCCH resource for feeding back the HARQ-ACK information by the terminal may be obtained according to the DCI indication (for example, the terminal determines the PUCCH resource for feeding back the HARQ-ACK according to the PRI, where the terminal determines, according to the PRI indication, a plurality of resources or resource sets configured by the terminal, and optionally, the PUCCH resource or resource set corresponding to the set of common PDCCH is different from the PUCCH resource set corresponding to the terminal-specific PDCCH. In the method, the base station can trigger all the terminals receiving the DCI to perform corresponding HARQ-ACK feedback once, so that DCI overhead is saved.

Example two

For example, the base station schedules the multicast PDSCH transmission by some method (e.g., DCI dynamic scheduling or semi-static configuration of resources of the multicast PDSCH), and when the terminal receives the group PDSCH, the terminal does not need to feed back HARQ-ACK information of the PDSCH. The base station divides the terminals into a plurality of subsets, each subset comprises one or more terminals, the base station sends a group common DCI, the DCI comprises a specific domain for triggering the terminal to feed back the HARQ-ACK, or a specific combination of certain domains is used for triggering the terminal to feed back the HARQ-ACK of one or more subsets, for example, the DCI has a bitmap (bitmap) with multiple bits, each bit corresponds to one subset respectively, when the bit state is 1, the bit state indicates that the terminal belonging to the subset is triggered to feed back the HARQ-ACK, wherein the base station can configure that each terminal belongs to one subset through a high-layer parameter. In the method, the base station can trigger one or more subsets of terminals to perform corresponding HARQ-ACK feedback at one time, thereby saving DCI overhead, and meanwhile, the terminals can be selected in a targeted manner to perform feedback (for example, users at the edge of a cell).

For another example, the base station schedules the transmission of the multicast PDSCH by some method (e.g., DCI dynamic scheduling or semi-static configuration of resources of the multicast PDSCH), and when the terminal receives the multicast PDSCH, the terminal does not need to feed back HARQ-ACK information of the PDSCH. And the base station triggers the specific terminal to perform HARQ-ACK feedback by using the terminal specific DCI. A specific field (e.g., the field may be a newly introduced field such as a 1-bit HARQ-ACK feedback trigger indication, or a specific state or combination of existing fields is used) is included in the DCI for triggering the terminal to feed back the HARQ-ACK. In the method, the base station can perform corresponding HARQ-ACK feedback on one terminal and can allocate a special PUCCH resource to each terminal for transmitting the HARQ-ACK.

Example three

A terminal receives a DCI, and the DCI triggers the terminal to feed back HARQ-ACK information corresponding to one or more PDSCHs, where the one or more PDSCHs may include:

the method comprises the following steps: all PDSCHs scheduled in a period of time T before the starting symbol (or the ending symbol) of the DCI and PDSCHs scheduled by the DCI (if the DCI schedules one PDSCH; if the DCI does not schedule one PDSCH, the terminal only needs to feed back all PDSCHs scheduled in a period of time T before the starting symbol of the DCI); or, all PDSCHs scheduled in a time T before the start symbol (or end symbol) of the DCI is shifted forward by the symbol of time T2 and the DCI scheduled PDSCH (if the DCI schedules one PDSCH). Where time T may be a predefined or higher layer signaling configuration or DCI indication, offset time T2 may be a predefined or higher layer signaling configuration or DCI indication. In particular, the PDSCH is a specific PDSCH, such as a PDSCH scheduled by a specific DCI format (such as a DCI format for broadcast/multicast traffic scheduling) or a specific RNTI (such as group RNTI (g-RNTI)), within the feedback time T, and in order to distinguish from unicast PDSCH transmission, it is assumed that the transmission of the broadcast/multicast PDSCH is scrambled with a specific RNTI, such as g-RNTI. As shown in fig. 4, the DCI 2 scheduled PDSCH is PDSCH4, and DCI 2 triggers the terminal to feed back HARQ-ACK information, the terminal will feed back PDSCH (PDSCH2 and PDSCH3) received T time before the DCI 2 start symbol and HARQ-ACK information corresponding to PDSCH4, or, as shown in fig. 4, DCI 2 scheduled PDSCH is PDSCH4, and DCI 2 triggers the terminal to feed back HARQ-ACK information, the terminal will feed back DCI 2 start symbol forward by PDSCH (PDSCH1 and PDSCH2) received T time before the symbol of time T2 and HARQ-ACK information corresponding to PDSCH 4.

The method 2 comprises the following steps: all PDSCHs received from the starting symbol (or ending symbol) of the DCI triggering HARQ-ACK feedback last time to the starting symbol (or ending symbol) of the DCI and PDSCHs scheduled by the DCI (if the DCI schedules one PDSCH; if the DCI does not schedule one PDSCH, the terminal only needs to feed back all PDSCHs received from the starting symbol (or ending symbol) of the DCI triggering HARQ-ACK feedback last time to the starting symbol of the DCI). Or all PDSCHs received from the starting symbol forward offset time T3 of DCI which triggered HARQ-ACK feedback last time to the starting symbol forward offset time T3 of the DCI and the DCI scheduled PDSCH.

In particular, the PDSCH is a specific PDSCH, such as a PDSCH scheduled by a specific DCI format (such as a DCI format used for broadcast/multicast traffic scheduling) or a specific RNTI (such as g-RNTI), which is a PDSCH scrambled by a specific RNTI scrambling, such as g-RNTI, which is assumed for transmission of the broadcast/multicast PDSCH to distinguish from unicast PDSCH transmissions. As shown in fig. 5, DCI1 schedules PDSCH1 and triggers the terminal to feed back HARQ-ACK information, DCI 2 scheduled PDSCH is PDSCH4 and triggers the terminal to feed back HARQ-ACK information, the terminal feeds back PDSCH (PDSCH1, PDSCH2 and PDSCH3) received between DCI 2 starting symbols after DCI1 starting symbols and HARQ-ACK information corresponding to PDSCH 4.

The method 3 comprises the following steps: as shown in fig. 4 or fig. 5, all PDSCHs received in a T period from the starting symbol of PUCCH or from the slot or sub-slot shifted forward by T4; in particular, the PDSCH is a specific PDSCH, such as a PDSCH scheduled by a specific DCI format (such as a DCI format used for broadcast/multicast traffic scheduling) or a specific RNTI (such as g-RNTI), which is a PDSCH scrambled by a specific RNTI scrambling, such as g-RNTI, which is assumed for transmission of the broadcast/multicast PDSCH to distinguish from unicast PDSCH transmissions. As shown in fig. 5, the terminal forwards offsets the starting symbol of the PUCCH by T4 to feed back HARQ-ACK information corresponding to the PDSCH (PDSCH3 and PDSCH4) received for T periods.

As shown in fig. 6, an embodiment of the present invention further provides a feedback method for HARQ-ACK, which is applied to a terminal, and includes:

step 601, feeding back M-bit HARQ-ACK information corresponding to N downlink channels to network side equipment;

As an optional embodiment, when M is equal to 1, the feeding back, to the network side device, M-bit HARQ-ACK information corresponding to N downlink channels includes:

determining a proportional value of Negative Acknowledgement (NACK) and positive Acknowledgement (ACK) according to HARQ-ACK respectively corresponding to the N downlink channels;

feeding back HARQ-ACK information indicating negative response to the network side equipment under the condition that the proportional value is larger than a preset threshold value; otherwise, feeding back one HARQ-ACK information or not feeding back the HARQ-ACK information indicating the positive acknowledgement to the network side equipment.

The threshold value may be configured or predefined by a higher layer parameter or obtained by an implicit manner (e.g., related to quality of service, QoS, etc., of the service).

As a further alternative, in case M is greater than 1, for example, different values of M bits correspond to different proportional value ranges of NACK/ACK. Namely, according to the proportional value, feeding back the M-bit HARQ-ACK information corresponding to the proportional value to the network side device. For example, when M equals 2, 4 states of 2 bits are: 00. 01, 10, 11; and respectively correspond to different proportional value ranges of NACK/ACK, such as [0,25], (25,50], (50,75], (75,100 ]. if the proportional value of NACK/ACK is 0.3, HARQ-ACK information fed back to the network side equipment by the terminal is '01'.

As an alternative embodiment, the method further comprises:

and determining a feedback mode of the HARQ-ACK according to the high-layer parameter configuration or DCI indication or predefining of the network side equipment, wherein the feedback mode comprises a compression mode or other modes, and M in the compression mode is smaller than N.

In the embodiment of the present invention, the compression method is that M-bit HARQ-ACK information corresponding to N downlink channels is fed back to the network side device in step 601, where M is smaller than N. And the other method may be a non-compression method, that is, the terminal feeds back HARQ-ACK information for each PDSCH separately.

As an optional embodiment, the N downlink channels include at least one of:

feeding back PDSCH of HARQ-ACK in the same time unit (time slot or subslot);

a PDCCH for releasing a semi-statically scheduled PDSCH;

a PDCCH indicating the secondary cell is sleeping and not scheduling PDSCH.

As another alternative, the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

PDSCH scheduled by DCI of a target control resource set CORESET;

a DCI-scheduled PDSCH of a target search space (search space);

In summary, in the embodiment of the present invention, the terminal feeds back the M-bit HARQ-ACK information corresponding to the N downlink channels in a compressed manner, which not only can adapt to broadcast or multicast service characteristics, but also saves feedback overhead.

As shown in fig. 7, an embodiment of the present invention further provides a feedback method for HARQ-ACK, which is applied to a network device, and includes:

step 701, receiving M-bit HARQ-ACK information corresponding to N downlink channels fed back by a terminal;

As an alternative embodiment, the method further comprises:

configuring a feedback mode of HARQ-ACK for the terminal through a high-level parameter, or indicating the feedback mode of HARQ-ACK through downlink control information DCI, or predefining the feedback mode of HARQ-ACK;

the feedback mode comprises a compression mode or other modes, and M is smaller than N in the compression mode.

As an optional embodiment, the N downlink channels include at least one of:

feeding back PDSCH of HARQ-ACK in the same time unit (time slot or subslot);

a PDCCH for releasing a semi-statically scheduled PDSCH;

a PDCCH indicating the secondary cell is sleeping and not scheduling PDSCH.

As another alternative, the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

PDSCH scheduled by DCI of a target control resource set CORESET;

a DCI-scheduled PDSCH of a target search space (search space);

In order to describe the triggering method of the HARQ-ACK more clearly, the following description is made in detail with reference to an example.

Example four

When the terminal feeds back the HARQ-ACK information of one or more PDSCHs, the terminal may feed back the HARQ-ACK information in a compressed manner, or may feed back the HARQ-ACK information in a non-compressed manner, for example, when the terminal feeds back the HARQ-ACK information of PDSCH2, PDSCH3, and PDSCH4, the terminal may:

the method comprises the following steps: the ACK/NACK corresponding to the PDSCH2, the PDSCH3 and the PDSCH4 is compressed and fed back, the compression mode is that 1 bit information is determined according to the ACK corresponding to the PDSCH2, the PDSCH3 and the PDSCH4 or the NACK/ACK ratio in the NACK/NACK, if the NACK/ACK ratio is larger than or equal to a certain threshold value, the terminal feeds back 1 bit NACK, otherwise, the terminal feeds back 1 bit ACK or the terminal does not feed back HARQ-ACK information (namely, even if the base station triggers the terminal to feed back, when the NACK/ACK ratio does not reach the specific requirement, the UE does not feed back the HARQ-ACK information).

Optionally, the threshold of the NACK/ACK ratio may be configured by higher layer signaling, such as RRC message, predefined by a protocol, or obtained in some implicit manner, such as determined according to QoS requirements of the service corresponding to the PDSCH.

And on the base station side, after triggering the terminal to feed back the HARQ-ACK information, the base station detects and receives the PUCCH on a specific PUCCH resource, and if the base station detects NACK fed back by the terminal, the base station indicates that more PDSCHs in the one or more PDSCHs fail to decode. If the base station detects an ACK or the base station does not detect a PUCCH transmission, it indicates that more PDSCHs of the one or more PDSCHs are successfully decoded.

In the method, the terminal only needs to feed back 1-bit information, thereby saving the uplink HARQ-ACK feedback overhead, and in addition, if the terminal only transmits PUCCH in NACK, the PUCCH resources fed back by a plurality of terminals in the cell can be the same, thereby saving the PUCCH resource overhead and simplifying the PUCCH resource indication mode of HARQ-ACK feedback in multicast or broadcast services.

The method 2 comprises the following steps: and feeding back ACK/NACK corresponding to the PDSCH2, the PDSCH3 and the PDSCH4 to the base station. For example, each PDSCH corresponds to only one TB (Transport Block), or the terminal is configured with HARQ-ACK feedback spatial bundling (i.e., when each PDSCH corresponds to multiple TBs, the multiple TBs only feed back 1-bit HARQ-ACK information, such as configured by the parameter HARQ-ACK-spatialbundling PUCCH (HARQ-ACK spatial bundling PUCCH), or HARQ-ACK-spatialbundling PUSCH (HARQ-ACK spatial bundling PUSCH)), the terminal generates 1-bit ACK or NACK for PDSCH2, PDSCH3, and PDSCH4, respectively, and feeds back 3-bit information to the base station.

In the method, the terminal feeds back corresponding HARQ-ACK information for each PDSCH respectively, and the base station can obtain the decoding result of each PDSCH, thereby facilitating the retransmission scheduling of the corresponding PDSCH.

As shown in fig. 8, an embodiment of the present invention further provides a network-side device 800, including:

a first trigger module 801, configured to send downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel;

As an alternative embodiment, the first triggering module includes:

a first transmitting sub-module for transmitting a group common DCI;

the group of common DCI is used for triggering a terminal receiving the group of common DCI to feed back HARQ-ACK corresponding to a downlink channel;

or the group of common DCI is used for triggering terminals contained in at least one subset to feed back HARQ-ACK corresponding to a downlink channel, wherein the terminals receiving the group of common DCI are divided into at least two subsets.

As an optional embodiment, the DCI includes: a DCI for scheduling a downlink channel; or, not DCI for scheduling a downlink channel.

As an optional embodiment, the network side device further includes:

and the first receiving module is used for receiving HARQ-ACK (hybrid automatic repeat request-acknowledgement) of the downlink channel scheduled in the first time period fed back to the network side equipment by the terminal on the target time domain resource.

As an optional embodiment, the network side device further includes:

and the second receiving module is used for receiving HARQ-ACK corresponding to at least one downlink channel triggered by the DCI fed back by the terminal.

As an optional embodiment, the at least one downlink channel triggered by the DCI includes at least one of:

and the PDCCH used for indicating the secondary cell to sleep and not scheduling the PDSCH in the second time period.

As an optional embodiment, if the DCI is a DCI for scheduling a downlink channel, the at least one downlink control channel triggered by the DCI further includes:

a PDSCH scheduled by the DCI.

As an alternative embodiment, the second time period comprises any one of:

As an optional embodiment, the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

a target type of PDSCH;

a PDSCH satisfying a PDSCH processing time; and the PDSCH processing time is a time interval from a transmission end symbol of the PDSCH to an uplink transmission starting symbol of the HARQ-ACK feedback.

The network side device provided in the embodiment of the present invention can implement each process implemented by the network side device in the method embodiment of fig. 1, and is not described herein again to avoid repetition.

In the embodiment of the invention, the network side equipment triggers the specific terminal to feed back the HARQ-ACK of the downlink channel through DCI or configured period information according to the requirement, and specifies which HARQ-ACK of the downlink channel is fed back by the terminal, thereby not only adapting to the broadcast or multicast service characteristics, but also saving the feedback overhead.

An embodiment of the present invention further provides a communication device, where the communication device is a network-side device, and the communication device includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the computer program implements each process of the above-mentioned HARQ-ACK feedback triggering method embodiment applied to the network-side device, and can achieve the same technical effect, and is not described herein again to avoid repetition.

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 executed by a processor, the computer program implements each process of the above-mentioned embodiment of the method for triggering HARQ-ACK feedback applied to a network device, 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.

As shown in fig. 9, an embodiment of the present invention further provides a terminal 900, which includes:

a second trigger module 901, configured to receive downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel;

As an alternative embodiment, the DCI is a group common DCI.

As an optional embodiment, the DCI includes: DCI for scheduling a downlink channel, or DCI not for scheduling a downlink channel.

As an optional embodiment, the terminal further includes:

and the first sending module is used for feeding back the HARQ-ACK of the downlink channel scheduled in the first time period to the network side equipment on the target time domain resource according to the period information.

As an optional embodiment, the terminal further includes:

and the second sending module is used for feeding back the HARQ-ACK corresponding to the at least one downlink channel triggered by the DCI to the network side equipment.

a PDSCH scheduled by the DCI.

As an alternative embodiment, the second time period comprises any one of:

As an optional embodiment, the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

a target type of PDSCH;

The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the method embodiment of fig. 3, and is not described herein again to avoid repetition.

An embodiment of the present invention further provides a communication device, where the communication device is a terminal and includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the above-mentioned embodiment of the method for triggering HARQ-ACK feedback applied to the terminal, and can achieve the same technical effect, and is not described herein again to avoid repetition.

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 above-mentioned HARQ-ACK feedback triggering method embodiment applied to a terminal, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted 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.

As shown in fig. 10, an embodiment of the present invention further provides a terminal 100, including;

a feedback module 110, configured to feed back M-bit HARQ-ACK information corresponding to the N downlink channels to a network side device;

As an alternative embodiment, in the case where M is equal to 1, the feedback module comprises:

the first determining submodule is used for determining the proportion value of the negative acknowledgement and the positive acknowledgement according to the HARQ-ACK respectively corresponding to the N downlink channels;

the first feedback sub-module is used for feeding back HARQ-ACK information indicating negative response to the network side equipment under the condition that the proportional value is larger than a preset threshold value; otherwise, feeding back one HARQ-ACK information or not feeding back the HARQ-ACK information indicating the positive acknowledgement to the network side equipment.

As an optional embodiment, the terminal further includes:

and the second determining submodule is used for determining a feedback mode of the HARQ-ACK according to the high-layer parameter configuration or DCI indication or predefining of the network side equipment, wherein the feedback mode comprises a compression mode or other modes, and M in the compression mode is smaller than N.

As an optional embodiment, the N downlink channels include at least one of:

feeding back PDSCH of HARQ-ACK in the same time unit;

a PDCCH for releasing a semi-statically scheduled PDSCH;

a PDCCH indicating the secondary cell is sleeping and not scheduling PDSCH.

As an optional embodiment, the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

a target type of PDSCH;

The terminal provided by the embodiment of the present invention can implement each process implemented by the terminal in the method embodiment of fig. 6, and is not described here again to avoid repetition.

In the embodiment of the invention, the terminal feeds back the M-bit HARQ-ACK information corresponding to the N downlink channels in a compression mode, thereby not only adapting to the broadcast or multicast service characteristics, but also saving the feedback overhead.

An embodiment of the present invention further provides a communication device, where the communication device is a terminal and includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program, when executed by the processor, implements each process of the above-mentioned HARQ-ACK feedback method embodiment applied to the terminal, and can achieve the same technical effect, and is not described herein again to avoid repetition.

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 applied to the terminal, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

As shown in fig. 11, an embodiment of the present invention further provides a network-side device 1100, including:

a feedback receiving module 1101, configured to receive M-bit HARQ-ACK information corresponding to the N downlink channels fed back by the terminal;

As an optional embodiment, the network side device further includes:

a configuration module, configured to configure a HARQ-ACK feedback mode for the terminal according to a high-level parameter, or indicate the HARQ-ACK feedback mode according to downlink control information DCI, or predefine the HARQ-ACK feedback mode;

As an optional embodiment, the N downlink channels include at least one of:

feeding back PDSCH of HARQ-ACK in the same time unit;

a PDCCH for releasing a semi-statically scheduled PDSCH;

a PDCCH indicating the secondary cell is sleeping and not scheduling PDSCH.

As an optional embodiment, the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

a target type of PDSCH;

The network side device provided in the embodiment of the present invention can implement each process implemented by the network side device in the method embodiment of fig. 7, and is not described herein again to avoid repetition.

An embodiment of the present invention further provides a communication device, where the communication device is a network-side device, and the communication device includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the computer program implements each process of the HARQ-ACK feedback method embodiment applied to the network-side device, and can achieve the same technical effect, and is not described herein again to avoid repetition.

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 applied to a network device, 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.

Fig. 12 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention, where the terminal 1200 includes, but is not limited to: radio frequency unit 1201, network module 1202, audio output unit 1203, input unit 1204, sensor 1205, display unit 1206, user input unit 1207, interface unit 1208, memory 1209, processor 1210, and power source 1211. Those skilled in the art will appreciate that the terminal configuration shown in fig. 12 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 wearable device, a pedometer, and the like.

A radio frequency unit 1201, configured to receive downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel;

or, the radio frequency unit 1201 is configured to receive cycle information of an HARQ-ACK corresponding to a feedback downlink channel configured by a network side device, where the cycle information is used to trigger the terminal to feed back an HARQ-ACK of the downlink channel scheduled in a first time period on a target time domain resource;

or, the radio frequency unit 1201 is configured to feed back M-bit HARQ-ACK information corresponding to the N downlink channels to the network side device; wherein N is an integer greater than or equal to 1, and M is an integer less than N.

In the embodiment of the invention, the network side equipment triggers the specific terminal to feed back the HARQ-ACK of the downlink channel through DCI or configured period information according to the requirement, thereby not only adapting to the broadcast or multicast service characteristics, but also saving the feedback overhead; on the other hand, in the embodiment of the invention, the terminal feeds back the M-bit HARQ-ACK information corresponding to the N downlink channels in a compression mode, so that the aim of saving feedback overhead can be further achieved.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 1201 may be used for receiving and sending signals during information transmission and reception or during a call, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 1210; in addition, the uplink data is transmitted to the base station. Typically, the radio frequency unit 1201 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 1201 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 1202, such as assisting the user in sending and receiving e-mails, browsing web pages, and accessing streaming media.

The audio output unit 1203 may convert audio data received by the radio frequency unit 1201 or the network module 1202 or stored in the memory 1209 into an audio signal and output as sound. Also, the audio output unit 1203 may also provide audio output related to a specific function performed by the terminal 1200 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 1203 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1204 is used to receive audio or video signals. The input Unit 1204 may include a Graphics Processing Unit (GPU) 12041 and a microphone 12042, and the Graphics processor 12041 processes image data of a still picture 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 1206. The image frames processed by the graphics processor 12041 may be stored in the memory 1209 (or other storage medium) or transmitted via the radio frequency unit 1201 or the network module 1202. The microphone 12042 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 1201 in case of the phone call mode.

The terminal 1200 also includes at least one sensor 1205, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 12061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 12061 and/or backlight when the terminal 1200 moves 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 1205 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., and will not be described further herein.

The display unit 1206 is used to display information input by the user or information provided to the user. The Display unit 1206 may include a Display panel 12061, and the Display panel 12061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 1207 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 1207 includes a touch panel 12071 and other input devices 12072. The touch panel 12071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 12071 (e.g., operations by a user on or near the touch panel 12071 using a finger, a stylus, or any suitable object or attachment). The touch panel 12071 may include two parts 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 1210, receives a command from the processor 1210, and executes the command. In addition, the touch panel 12071 may be implemented by using various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 1207 may include other input devices 12072 in addition to the touch panel 12071. In particular, the other input devices 12072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 12071 may be overlaid on the display panel 12061, and when the touch panel 12071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 1210 to determine the type of the touch event, and then the processor 1210 provides a corresponding visual output on the display panel 12061 according to the type of the touch event. Although the touch panel 12071 and the display panel 12061 are shown as two separate components in fig. 12 to implement the input and output functions of the terminal, in some embodiments, the touch panel 12071 and the display panel 12061 may be integrated to implement the input and output functions of the terminal, and this is not limited herein.

An interface unit 1208 is an interface for connecting an external device to the terminal 1200. 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 1208 may be used to receive input from an external device (e.g., data information, power, etc.) and transmit the received input to one or more elements within the terminal 1200 or may be used to transmit data between the terminal 1200 and the external device.

The memory 1209 may be used to store software programs as well as various data. The memory 1209 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, 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 1209 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 1210 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 1209 and calling data stored in the memory 1209, thereby monitoring the entire terminal. Processor 1210 may include one or more processing units; preferably, the processor 1210 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 is to be appreciated that the modem processor described above may not be integrated into processor 1210.

The terminal 1200 may also include a power source 1211 (e.g., a battery) for powering the various components, and preferably, the power source 1211 is logically connected to the processor 1210 via a power management system such that the functions of managing charging, discharging, and power consumption are performed via the power management system.

In addition, the terminal 1200 includes some functional modules that are not shown, and are not described in detail herein.

Fig. 13 is a structural diagram of a network side device according to an embodiment of the present invention, which can implement details of the information receiving method described above and achieve the same effect. As shown in fig. 13, the network-side device 1300 includes: a processor 1301, a transceiver 1302, a memory 1303 and a bus interface, wherein:

the processor 1301 is configured to read the program in the memory 1303, and execute the following processes:

sending downlink control information DCI; the DCI is used for triggering one or more terminals to feed back HARQ-ACK corresponding to a downlink channel.

Or receiving M-bit HARQ-ACK information corresponding to the N downlink channels fed back by the terminal;

In fig. 13, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1301 and various circuits of memory represented by memory 1303 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 1302 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

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.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for triggering HARQ-ACK feedback of hybrid automatic repeat request response is applied to network side equipment, and is characterized by comprising the following steps:

alternatively, the first and second electrodes may be,

2. The method of claim 1, wherein the sending the downlink control information DCI comprises:

transmitting group common DCI;

3. The method of claim 1, wherein the DCI comprises: a DCI for scheduling a downlink channel; or, not DCI for scheduling a downlink channel.

4. The method of claim 1, further comprising:

5. The method of claim 1, further comprising:

6. The method of claim 5, wherein the at least one downlink channel triggered by the DCI comprises at least one of:

7. The method of claim 6, wherein if the DCI is a DCI for scheduling a downlink channel, the at least one downlink control channel triggered by the DCI further comprises:

a PDSCH scheduled by the DCI.

8. The method of claim 6, wherein the second time period comprises any one of:

9. The method of claim 6, wherein the PDSCH comprises at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

a target type of PDSCH;

10. A method for triggering HARQ-ACK feedback of hybrid automatic repeat request response is applied to a terminal, and is characterized by comprising the following steps:

alternatively, the first and second electrodes may be,

11. The method of claim 10, wherein the DCI is a group-common DCI.

12. The method of claim 10, wherein the DCI comprises: DCI for scheduling a downlink channel, or DCI not for scheduling a downlink channel.

13. The method of claim 10, further comprising:

14. The method of claim 10, further comprising:

15. The method of claim 14, wherein the at least one downlink channel triggered by the DCI comprises at least one of:

16. The method of claim 15, wherein if the DCI is a DCI scheduling a downlink channel, the at least one downlink control channel triggered by the DCI further comprises:

a PDSCH scheduled by the DCI.

17. The method of claim 15, wherein the second time period comprises any one of:

18. The method of claim 15, wherein the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

a target type of PDSCH;

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

20. The method of claim 19, wherein when M is equal to 1, the feeding back M-bit HARQ-ACK information corresponding to N downlink channels to the network side device includes:

determining the proportional value of the negative acknowledgement and the positive acknowledgement according to the HARQ-ACK respectively corresponding to the N downlink channels;

21. The method of claim 19, further comprising:

22. The method of claim 19, wherein the N downlink channels comprise at least one of:

feeding back PDSCH of HARQ-ACK in the same time unit;

a PDCCH for releasing a semi-statically scheduled PDSCH;

a PDCCH indicating the secondary cell is sleeping and not scheduling PDSCH.

23. The method of claim 22, wherein the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

a target type of PDSCH;

24. A feedback method of hybrid automatic repeat request-acknowledgement (HARQ-ACK) is applied to network side equipment and is characterized by comprising the following steps:

25. The method of claim 24, further comprising:

26. The method of claim 24, wherein the N downlink channels comprise at least one of:

feeding back PDSCH of HARQ-ACK in the same time unit;

a PDCCH for releasing a semi-statically scheduled PDSCH;

a PDCCH indicating the secondary cell is sleeping and not scheduling PDSCH.

27. The method of claim 26, wherein the PDSCH includes at least one of:

PDSCH scrambled by the target radio network temporary identifier RNTI;

PDSCH scheduled by a target DCI format;

a target type of PDSCH;

28. A network-side device, comprising:

29. A terminal, comprising:

30. A terminal, comprising;

31. A network-side device, comprising:

32. A communication device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for triggering hybrid automatic repeat request acknowledgement, HARQ, ACK, feedback of any of claims 1 to 9; or, the computer program when being executed by the processor implements the steps of the method for triggering hybrid automatic repeat request acknowledgement, HARQ-ACK, feedback according to any of claims 10 to 18; or, the computer program when being executed by the processor realizes the steps of the feedback method of hybrid automatic repeat request acknowledgement, HARQ-ACK, according to any of claims 19 to 23; alternatively, the computer program realizes the steps of the feedback method of hybrid automatic repeat request acknowledgement, HARQ-ACK, according to any of claims 24 to 27 when executed by the processor.

33. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for triggering hybrid automatic repeat request acknowledgement, HARQ-ACK, feedback of any of claims 1 to 9; or, the computer program when being executed by a processor realizes the steps of the method for triggering hybrid automatic repeat request acknowledgement, HARQ-ACK, feedback according to any of claims 10 to 18; or, the computer program when being executed by a processor realizes the steps of the feedback method of hybrid automatic repeat request acknowledgement, HARQ-ACK, according to any of the claims 19 to 23; alternatively, the computer program realizes the steps of the feedback method of hybrid automatic repeat request acknowledgement, HARQ-ACK, according to any of claims 24 to 27 when executed by a processor.