CN112533290B - A method and device for sending feedback information based on PUCCH - Google Patents

Abstract

The embodiment of the invention provides a feedback information sending method and device based on PUCCH, wherein the method comprises the following steps: determining a radio frame in which data transmission is completed through a PDSCH; if the wireless frame adopts a target PUCCH format, determining a target SC-FDMA symbol occupied by ACK/NACK feedback information carried in the PUCCH according to the target PUCCH format; wherein the target SC-FDMA symbol is included in subframe 4 of the radio frame, and the target PUCCH format includes PUCCH format 0 or PUCCH format 3; and occupying the target SC-FDMA symbol to send the ACK/NACK feedback information. The apparatus performs the above method. The feedback information sending method and device based on the PUCCH can reduce service processing time delay, thereby meeting the requirement of low-time-delay service.

Description

A method and device for sending feedback information based on PUCCH

technical field

The present invention relates to the field of communication technology, in particular to a method and device for sending feedback information based on PUCCH.

Background technique

Figure 1 is a schematic diagram of a wireless frame structure in the prior art. As shown in Figure 1, a wireless frame is composed of 5 subframes with a length of 5ms, and each subframe is 640Ts, wherein, subframe 0 is a downlink subframe, and subframe 2, 3, and 4 are uplink subframes, and subframe 1 is a special subframe, including 3 fields, which are downlink pilot time slots DwPTS, GP and uplink pilot time slots UpPTS.

A physical uplink control channel (Physical Uplink Control Channel, "PUCCH" for short) carries ACK/NACK feedback information of a physical downlink shared channel (Physical Downlink Share Control Channel, "PDSCH" for short). The PUCCH supports multiple PUCCH formats, such as PUCCH format 0 to PUCCH format 3. Different PUCCH formats occupy different SC-FDMA symbols or subframes in the time domain. In the prior art, the terminal, that is, the UE, detects that the wireless frame when the data transmission (including retransmission data transmission is completed) is completed through the PDSCH is the wireless frame n, determines the ACK/NACK feedback information, and transmits the information in the next wireless frame Corresponding ACK/NACK feedback information is sent in radio frame n+1. Since there is a time interval between radio frame n and radio frame n+1, the requirement of low-latency services cannot be met.

Contents of the invention

Aiming at the problems existing in the prior art, the embodiments of the present invention provide a PUCCH-based feedback information sending method and device.

An embodiment of the present invention provides a method for sending feedback information based on PUCCH, including:

Determine the wireless frame for completing data transmission through the PDSCH;

If the radio frame adopts the target PUCCH format, then according to the target PUCCH format, determine the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH; wherein, the target SC-FDMA symbol is included in the In subframe 4 of the radio frame, the target PUCCH format includes PUCCH format 0 or PUCCH format 3;

Occupying the target SC-FDMA symbol to send the ACK/NACK feedback information.

Wherein, the determining the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH according to the target PUCCH format includes:

If the target PUCCH format is PUCCH format 0, then determine that the last 4 consecutive SC-FDMA symbols in the subframe 4 are the target SC-FDMA symbols;

If the target PUCCH format is PUCCH format 3, then determine the last 5 consecutive SC-FDMA symbols in the subframe 4; and/or the first 4 consecutive SC-FDMA symbols in the subframe 4 are the target SC - FDMA symbols.

Wherein, the PUCCH-based feedback information sending method further includes:

If the target PUCCH format is PUCCH format 0, then determine that the second SC-FDMA symbol and the third SC-FDMA symbol in the target SC-FDMA symbol are pilots;

If the target PUCCH format is PUCCH format 3, then determine that the second SC-FDMA symbol and the third SC-FDMA symbol in the last 5 consecutive SC-FDMA symbols in subframe 4 are pilots; and/or The second SC-FDMA symbol and the third SC-FDMA symbol in the first 4 consecutive SC-FDMA symbols in subframe 4 are pilots.

Wherein, the PUCCH-based feedback information sending method further includes:

If the target PUCCH format is PUCCH format 3, it is determined that the last 5 consecutive SC-FDMA symbols in subframe 4 and the first 4 consecutive SC-FDMA symbols in subframe 4 respectively form two PUCCH symbol groups.

An embodiment of the present invention provides a device for sending feedback information based on PUCCH, including:

A first determining unit, configured to determine a wireless frame for completing data transmission through the PDSCH;

The second determination unit is configured to determine, according to the target PUCCH format, the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH if the radio frame adopts the target PUCCH format; wherein, the target SC - the FDMA symbol is included in subframe 4 of the radio frame, and the target PUCCH format includes PUCCH format 0 or PUCCH format 3;

A sending unit, configured to occupy the target SC-FDMA symbol to send the ACK/NACK feedback information.

Wherein, the second determining unit is specifically used for:

If the target PUCCH format is PUCCH format 0, then determine that the last 4 consecutive SC-FDMA symbols in the subframe 4 are the target SC-FDMA symbols;

If the target PUCCH format is PUCCH format 3, then determine the last 5 consecutive SC-FDMA symbols in the subframe 4; and/or the first 4 consecutive SC-FDMA symbols in the subframe 4 are the target SC - FDMA symbols.

Wherein, the device for sending feedback information based on PUCCH is also specifically used for:

If the target PUCCH format is PUCCH format 0, then determine that the second SC-FDMA symbol and the third SC-FDMA symbol in the target SC-FDMA symbol are pilots;

If the target PUCCH format is PUCCH format 3, then determine that the second SC-FDMA symbol and the third SC-FDMA symbol in the last 5 consecutive SC-FDMA symbols in subframe 4 are pilots; and/or The second SC-FDMA symbol and the third SC-FDMA symbol in the first 4 consecutive SC-FDMA symbols in subframe 4 are pilots.

Wherein, the device for sending feedback information based on PUCCH is also specifically used for:

If the target PUCCH format is PUCCH format 3, it is determined that the last 5 consecutive SC-FDMA symbols in subframe 4 and the first 4 consecutive SC-FDMA symbols in subframe 4 respectively form two PUCCH symbol groups.

An embodiment of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and operable on the processor, wherein,

When the processor executes the computer program, the following method steps are implemented:

Determine the wireless frame for completing data transmission through the PDSCH;

If the radio frame adopts the target PUCCH format, then according to the target PUCCH format, determine the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH; wherein, the target SC-FDMA symbol is included in the In subframe 4 of the radio frame, the target PUCCH format includes PUCCH format 0 or PUCCH format 3;

Occupying the target SC-FDMA symbol to send the ACK/NACK feedback information.

An embodiment of the present invention provides a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the following method steps are implemented:

Determine the wireless frame for completing data transmission through the PDSCH;

If the radio frame adopts the target PUCCH format, then according to the target PUCCH format, determine the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH; wherein, the target SC-FDMA symbol is included in the In subframe 4 of the radio frame, the target PUCCH format includes PUCCH format 0 or PUCCH format 3;

Occupying the target SC-FDMA symbol to send the ACK/NACK feedback information.

The PUCCH-based feedback information transmission method and device provided by the embodiments of the present invention determine the wireless frame for data transmission through the PDSCH, and if the wireless frame adopts the target PUCCH format, determine the ACK/NACK feedback information carried on the PUCCH according to the target PUCCH format Occupying the target SC-FDMA symbol in subframe 4 of the same radio frame, and sending ACK/NACK feedback information, can reduce service processing delay, thereby meeting the requirements of low-delay services.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic diagram of a wireless frame structure in the prior art;

FIG. 2 is a flowchart of an embodiment of a method for sending feedback information based on PUCCH;

FIG. 3 is a schematic diagram of a target SC-FDMA symbol of PUCCH format 0 according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a target SC-FDMA symbol of PUCCH format 3 according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of an embodiment of a device for sending feedback information based on PUCCH in the present invention;

FIG. 6 is a schematic diagram of a physical structure of an electronic device provided by an embodiment of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

FIG. 2 is a flow chart of an embodiment of a method for sending feedback information based on PUCCH. As shown in FIG. 2 , a method for sending feedback information based on PUCCH provided by an embodiment of the present invention includes the following steps:

S201: Determine a radio frame in which data transmission is completed through the PDSCH.

Specifically, determine the wireless frame in which the data transmission is completed through the PDSCH. The step of the method may be performed by a computer device or the like, and the embodiment of the present invention may be a terminal. It should be noted that: completion of data transmission may include completion of retransmission data transmission. For example, a service transmits 70% of the data volume in the first wireless frame and 30% of the data volume in the second wireless frame. However, an error is reported during data transmission in the second wireless frame and needs to be retransmitted. , therefore, 30% of the data volume is retransmitted in the third radio frame, and at this time, it is determined that the radio frame in which the data transmission is completed through the PDSCH is the third radio frame.

S202: If the radio frame adopts the target PUCCH format, then according to the target PUCCH format, determine the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH; wherein, the target SC-FDMA symbol is included in In subframe 4 of the radio frame, the target PUCCH format includes PUCCH format 0 or PUCCH format 3.

Specifically, if the radio frame adopts the target PUCCH format, then according to the target PUCCH format, determine the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH; wherein, the target SC-FDMA symbol includes In subframe 4 of the radio frame, the target PUCCH format includes PUCCH format 0 or PUCCH format 3. Referring to Figure 1, the target SC-FDMA symbol is included in subframe 4 of the radio frame, that is, the same radio frame as the above radio frame is used to feed back the ACK/NACK feedback information. Unlike the prior art, the next radio frame of the radio frame is used. Frame feedback ACK/NACK feedback information. 3 is a schematic diagram of a target SC-FDMA symbol of PUCCH format 0 according to an embodiment of the present invention. According to the target PUCCH format, determining the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH may include:

If the target PUCCH format is PUCCH format 0, it is determined that the last 4 consecutive SC-FDMA symbols in the subframe 4 are the target SC-FDMA symbols, that is, PUCCH format 0 occupies 1 SC-FDMA containing 4 The PUCCH symbol group of the symbol is located in the last 4 consecutive SC-FDMA symbols of subframe 4. Further, the second SC-FDMA symbol and the third SC-FDMA symbol in the target SC-FDMA symbol can also be determined as a guide frequency, as shown in Figure 3.

FIG. 4 is a schematic diagram of a target SC-FDMA symbol of PUCCH format 3 according to an embodiment of the present invention. According to the target PUCCH format, determining the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH may include:

If the target PUCCH format is PUCCH format 3, then determine the last 5 consecutive SC-FDMA symbols in the subframe 4; and/or the first 4 consecutive SC-FDMA symbols in the subframe 4 are the target SC -FDMA symbols, that is, PUCCH format 3 can occupy 2 PUCCH symbol groups, the first PUCCH symbol group of this PUCCH format occupies the first 4 consecutive SC-FDMA symbols of subframe 4, and the second PUCCH symbol group occupies subframe 4 The last 5 consecutive SC-FDMA symbols of , further, the second SC-FDMA symbol and The third SC-FDMA symbol is a pilot, as shown in Figure 4.

The symbol group mapping methods of different PUCCH formats are shown in Table 1:

Table 1

The PUCCH-based feedback information sending method provided by the embodiment of the present invention determines the wireless frame that completes data transmission through the PDSCH. If the wireless frame adopts the target PUCCH format, determine the ACK/NACK feedback information carried on the PUCCH according to the target PUCCH format. The target SC-FDMA symbol in subframe 4 of the same radio frame, and send ACK/NACK feedback information, can reduce service processing delay, thereby meeting the requirements of low-latency services.

On the basis of the above embodiments, determining the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH according to the target PUCCH format includes:

Specifically, if the target PUCCH format is PUCCH format 0, then determine the last 4 consecutive SC-FDMA symbols in subframe 4 as the target SC-FDMA symbols. Reference may be made to the above description, and details are not repeated here.

Specifically, if the target PUCCH format is PUCCH format 3, then determine the last 5 consecutive SC-FDMA symbols in subframe 4; and/or the first 4 consecutive SC-FDMA symbols in subframe 4 as the target SC-FDMA symbols. Reference may be made to the above description, and details are not repeated here.

The PUCCH-based feedback information transmission method provided by the embodiment of the present invention determines a specific SC-FDMA symbol as the target SC-FDMA symbol in the same radio frame in which data transmission is completed through the PDSCH, which can realize fast transmission of ACK/NACK feedback information, and can Reduce service processing delay to meet the requirements of low-latency services.

On the basis of the above embodiments, the PUCCH-based method for sending feedback information further includes:

Specifically, if the target PUCCH format is PUCCH format 3, then determine the second SC-FDMA symbol and the third SC-FDMA symbol in the last 5 consecutive SC-FDMA symbols of subframe 4 as pilots; and /or the second SC-FDMA symbol and the third SC-FDMA symbol in the first 4 consecutive SC-FDMA symbols in subframe 4 are pilots. Reference may be made to the above description, and details are not repeated here.

The PUCCH-based feedback information transmission method provided by the embodiment of the present invention determines a specific SC-FDMA symbol as a pilot in the same radio frame in which data transmission is completed through the PDSCH, which helps to flexibly control the transmission of ACK/NACK feedback information, and more Fully meet business needs.

On the basis of the above embodiments, the PUCCH-based method for sending feedback information further includes:

Specifically, if the target PUCCH format is PUCCH format 3, it is determined that the last 5 consecutive SC-FDMA symbols in subframe 4 and the first 4 consecutive SC-FDMA symbols in subframe 4 respectively form two PUCCH symbol groups. Reference may be made to the above description, and details are not repeated here.

The PUCCH-based feedback information transmission method provided by the embodiment of the present invention can effectively distinguish different target SC-FDMA symbols through two PUCCH symbol groups, which is convenient for management.

Fig. 5 is a schematic structural diagram of an embodiment of a PUCCH-based feedback information sending device in the present invention. As shown in Fig. 5 , the embodiment of the present invention provides a PUCCH-based feedback information sending device, including a first determining unit 501 and a second determining unit 502 and sending unit 503, wherein:

The first determination unit 501 is used to determine the wireless frame for data transmission through the PDSCH; the second determination unit 502 is used to determine the ACK/NACK carried on the PUCCH according to the target PUCCH format if the wireless frame adopts the target PUCCH format The target SC-FDMA symbol occupied by the feedback information; wherein, the target SC-FDMA symbol is included in subframe 4 of the radio frame, and the target PUCCH format includes PUCCH format 0 or PUCCH format 3; the sending unit 503 uses Sending the ACK/NACK feedback information by occupying the target SC-FDMA symbol.

Specifically, the first determining unit 501 is used to determine the radio frame that completes data transmission through the PDSCH; the second determining unit 502 is used to determine the radio frame carried on the PUCCH according to the target PUCCH format if the wireless frame adopts the target PUCCH format. The target SC-FDMA symbol occupied by the ACK/NACK feedback information; wherein, the target SC-FDMA symbol is included in subframe 4 of the radio frame, and the target PUCCH format includes PUCCH format 0 or PUCCH format 3; sending Unit 503 is configured to occupy the target SC-FDMA symbol to send the ACK/NACK feedback information.

The PUCCH-based feedback information sending device provided by the embodiment of the present invention determines the wireless frame that completes the data transmission through the PDSCH. If the wireless frame adopts the target PUCCH format, according to the target PUCCH format, determine the ACK/NACK feedback information carried on the PUCCH. The target SC-FDMA symbol in subframe 4 of the same radio frame, and send ACK/NACK feedback information, can reduce service processing delay, thereby meeting the requirements of low-latency services.

On the basis of the above embodiments, the second determining unit 502 is specifically configured to: if the target PUCCH format is PUCCH format 0, determine that the last 4 consecutive SC-FDMA symbols in the subframe 4 are the The target SC-FDMA symbol; if the target PUCCH format is PUCCH format 3, then determine the last 5 consecutive SC-FDMA symbols in the subframe 4; and/or the first 4 consecutive SC-FDMA symbols in the subframe 4 Symbol is the target SC-FDMA symbol.

The PUCCH-based feedback information sending device provided by the embodiment of the present invention determines a specific SC-FDMA symbol as the target SC-FDMA symbol in the same radio frame in which data transmission is completed through the PDSCH, and can quickly send ACK/NACK feedback information, and can Reduce service processing delay to meet the requirements of low-latency services.

On the basis of the above embodiments, the apparatus for sending feedback information based on PUCCH is further specifically configured to: if the target PUCCH format is PUCCH format 0, determine the second SC-FDMA in the target SC-FDMA symbol symbol and the third SC-FDMA symbol are pilots; if the target PUCCH format is PUCCH format 3, then determine the second SC-FDMA symbol and the second SC-FDMA symbol in the last 5 consecutive SC-FDMA symbols in subframe 4 The three SC-FDMA symbols are pilots; and/or the second SC-FDMA symbol and the third SC-FDMA symbol in the first 4 consecutive SC-FDMA symbols in subframe 4 are pilots.

The PUCCH-based feedback information sending device provided by the embodiment of the present invention determines a specific SC-FDMA symbol as a pilot in the same radio frame in which data transmission is completed through the PDSCH, which helps to flexibly control the sending of ACK/NACK feedback information, and more Fully meet business needs.

On the basis of the above embodiments, the device for sending feedback information based on PUCCH is further specifically configured to: if the target PUCCH format is PUCCH format 3, determine the last 5 consecutive SC-FDMA symbols and subframes in subframe 4 The first 4 consecutive SC-FDMA symbols in 4 respectively form two PUCCH symbol groups.

The PUCCH-based feedback information sending device provided by the embodiment of the present invention can effectively distinguish different target SC-FDMA symbols through two PUCCH symbol groups, which is convenient for management.

The apparatus for sending feedback information based on PUCCH provided by the embodiments of the present invention can be specifically used to execute the processing procedures of the foregoing method embodiments, and its functions will not be repeated here, and reference can be made to the detailed description of the foregoing method embodiments.

FIG. 6 is a schematic diagram of the physical structure of an electronic device provided by an embodiment of the present invention. As shown in FIG. 6, the electronic device includes: a processor (processor) 601, a memory (memory) 602, and a bus 603;

Wherein, the processor 601 and the memory 602 complete mutual communication through the bus 603;

The processor 601 is used to call the program instructions in the memory 602 to execute the methods provided by the above method embodiments, for example, including: determining the wireless frame for completing data transmission through the PDSCH; if the wireless frame uses the target PUCCH format, then according to the target PUCCH format, determine the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH; wherein, the target SC-FDMA symbol is included in subframe 4 of the radio frame, The target PUCCH format includes PUCCH format 0 or PUCCH format 3; occupying the target SC-FDMA symbol to send the ACK/NACK feedback information.

This embodiment discloses a computer program product, the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, and when the program instructions are executed by the computer, the computer The methods provided by the above method embodiments can be executed, for example, including: determining the wireless frame that completes the data transmission through the PDSCH; if the wireless frame adopts the target PUCCH format, then according to the target PUCCH format, determine the ACK/ The target SC-FDMA symbol occupied by the NACK feedback information; wherein, the target SC-FDMA symbol is included in subframe 4 of the radio frame, and the target PUCCH format includes PUCCH format 0 or PUCCH format 3; occupying the The target SC-FDMA symbol sends the ACK/NACK feedback information.

This embodiment provides a non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions cause the computer to execute the methods provided in the above method embodiments, for example, including : Determining the wireless frame for completing data transmission through the PDSCH; if the wireless frame adopts the target PUCCH format, then according to the target PUCCH format, determine the target SC-FDMA symbol occupied by the ACK/NACK feedback information carried on the PUCCH; wherein, The target SC-FDMA symbol is included in subframe 4 of the radio frame, the target PUCCH format includes PUCCH format 0 or PUCCH format 3; the target SC-FDMA symbol is occupied to send the ACK/NACK feedback information.

Those of ordinary skill in the art can understand that all or part of the steps to realize the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the It includes the steps of the above method embodiments; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk and other various media that can store program codes.

The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative efforts.

Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic Disks, CDs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A feedback information transmitting method based on PUCCH, comprising:

determining a radio frame in which data transmission is completed through a PDSCH;

if the wireless frame adopts a target PUCCH format, determining a target SC-FDMA symbol occupied by ACK/NACK feedback information carried in the PUCCH according to the target PUCCH format; wherein the target SC-FDMA symbol is included in subframe 4 of the radio frame, and the target PUCCH format includes PUCCH format 0 or PUCCH format 3;

and occupying the target SC-FDMA symbol to send the ACK/NACK feedback information.

2. The PUCCH-based feedback information transmission method according to claim 1, wherein the determining, according to the target PUCCH format, a target SC-FDMA symbol occupied by ACK/NACK feedback information carried on PUCCH includes:

if the target PUCCH format is PUCCH format 0, determining the last 4 continuous SC-FDMA symbols in the subframe 4 as the target SC-FDMA symbols;

if the target PUCCH format is PUCCH format 3, determining the last 5 continuous SC-FDMA symbols in the subframe 4; and/or the first 4 consecutive SC-FDMA symbols in subframe 4 are the target SC-FDMA symbols.

3. The PUCCH-based feedback information transmission method according to claim 2, further comprising:

if the target PUCCH format is PUCCH format 0, determining a second SC-FDMA symbol and a third SC-FDMA symbol in the target SC-FDMA symbols as pilot frequency;

if the target PUCCH format is PUCCH format 3, determining that a second SC-FDMA symbol and a third SC-FDMA symbol in the last 5 continuous SC-FDMA symbols of the subframe 4 are pilot frequencies; and/or the second SC-FDMA symbol and the third SC-FDMA symbol of the first 4 consecutive SC-FDMA symbols in subframe 4 are pilots.

4. The PUCCH-based feedback information transmission method according to claim 2, further comprising:

if the target PUCCH format is PUCCH format 3, it is determined that the last 5 consecutive SC-FDMA symbols in subframe 4 and the first 4 consecutive SC-FDMA symbols in subframe 4 respectively constitute two PUCCH symbol groups.

5. A PUCCH-based feedback information transmitting apparatus, comprising:

a first determining unit configured to determine a radio frame for which data transmission is completed through a PDSCH;

a second determining unit, configured to determine, according to a target PUCCH format, a target SC-FDMA symbol occupied by ACK/NACK feedback information carried on a PUCCH if the radio frame adopts the target PUCCH format; wherein the target SC-FDMA symbol is included in subframe 4 of the radio frame, and the target PUCCH format includes PUCCH format 0 or PUCCH format 3;

and the sending unit is used for occupying the target SC-FDMA symbol to send the ACK/NACK feedback information.

6. The PUCCH-based feedback information transmitting apparatus according to claim 5, wherein the second determining unit is specifically configured to:

if the target PUCCH format is PUCCH format 0, determining the last 4 continuous SC-FDMA symbols in the subframe 4 as the target SC-FDMA symbols;

if the target PUCCH format is PUCCH format 3, determining the last 5 continuous SC-FDMA symbols in the subframe 4; and/or the first 4 consecutive SC-FDMA symbols in subframe 4 are the target SC-FDMA symbols.

7. The PUCCH-based feedback information transmitting apparatus according to claim 6, further specifically configured to:

if the target PUCCH format is PUCCH format 0, determining a second SC-FDMA symbol and a third SC-FDMA symbol in the target SC-FDMA symbols as pilot frequency;

if the target PUCCH format is PUCCH format 3, determining that a second SC-FDMA symbol and a third SC-FDMA symbol in the last 5 continuous SC-FDMA symbols in subframe 4 are pilot frequencies; and/or the second SC-FDMA symbol and the third SC-FDMA symbol of the first 4 consecutive SC-FDMA symbols in subframe 4 are pilots.

8. The PUCCH-based feedback information transmitting apparatus according to claim 6, further specifically configured to:

if the target PUCCH format is PUCCH format 3, it is determined that the last 5 consecutive SC-FDMA symbols in subframe 4 and the first 4 consecutive SC-FDMA symbols in subframe 4 respectively constitute two PUCCH symbol groups.

9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the method according to any one of claims 1 to 4 when the computer program is executed.

10. A non-transitory computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method according to any one of claims 1 to 4.