CN109586857B

CN109586857B - HARQ feedback method, transmission method, terminal and network side equipment

Info

Publication number: CN109586857B
Application number: CN201710912146.7A
Authority: CN
Inventors: 胡丽洁; 侯雪颖
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2021-07-13
Anticipated expiration: 2037-09-29
Also published as: CN109586857A

Abstract

The invention provides a HARQ feedback method, a transmission method, a terminal and network side equipment, wherein the HARQ feedback method comprises the following steps: receiving downlink information sent by network side equipment, determining a first TTI offset according to a first TTI serial number of a transmission time interval TTI where the downlink information is located, an uplink and downlink configuration mode of a currently adopted TDD frame structure and processing time capability of a terminal, determining a first target TTI when HARQ-ACK feedback is required, and performing HARQ-ACK feedback in the first target TTI; the difference value between the second TTI serial number of the first target TTI and the first TTI offset is equal to the first TTI serial number, the TTI size is 0.5ms, and the processing time capability of the terminal is minimum 6 TTIs. The scheme of the invention can realize HARQ feedback more suitable for the processing capacity of the terminal and the scheduling of the uplink PUSCH.

Description

HARQ feedback method, transmission method, terminal and network side equipment

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a HARQ feedback method, a transmission method, a terminal, and a network device.

Background

Hybrid Automatic Repeat reQuest (HARQ) is a combination of ARQ and Forward Error Correction (FEC), and is a means for link adaptation of an LTE system.

The LTE system adopts a stop-and-wait type HARQ protocol of N channels, namely N processes exist simultaneously, each process adopts stop-and-wait type ARQ protocol transmission, a sending end stops temporarily after sending a data packet to wait for the confirmation message of a receiving end, when the data reaches the receiving end, the data is detected, if the data is received correctly, an ACK message is fed back to the sending end, otherwise, a NACK message is fed back to the sending end, when the sending end receives the ACK signal, new data is sent again, otherwise, the last data packet is retransmitted. The parallel N processes are in the process of stopping and the like, and other processes can utilize channel resource transmission.

The minimum rtt (round Trip time) of HARQ is defined as the completion time of a data packet transmission process, and includes the process of starting transmission of a data packet, receiving and processing by a receiving end, performing ACK/NACK feedback, and determining to perform data retransmission or transmit a new data packet after the transmitting end receives and demodulates an ACK/NACK signal. For the frame structure of FDD, uplink and downlink transmissions are always continuous, and feedback of ACK/NACK signals or retransmission of data can be performed in a fixed subframe. For TDD frame structures, since uplink and downlink transmissions are time division multiplexed, a fixed and same feedback time interval cannot be found for each subframe. For different TDD uplink and downlink (UL/DL) configurations, the time intervals of ACK/NACK feedback and retransmission are different in different subframes.

Currently, a feedback timing design of downlink PDSCH is defined in 3GPP TS 36.213, and a scheduling timing design of uplink PUSCH is also defined, wherein the delay processing capability is minimum 4 Transmission Time Intervals (TTI).

However, the delay processing capability of a minimum of 4 TTIs is challenging for the terminal processing capability. It is therefore necessary to provide a new solution to adapt the terminal processing capabilities.

Disclosure of Invention

The embodiment of the invention provides a HARQ feedback method, a transmission method, a terminal and network side equipment, which are used for realizing HARQ feedback and uplink PUSCH scheduling suitable for the processing capacity of the terminal.

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

receiving downlink information sent by network side equipment;

determining a first TTI offset according to a first TTI serial number of a transmission time interval TTI where the downlink information is located, an uplink and downlink configuration mode of a currently adopted TDD frame structure and processing time capability of a terminal;

when HARQ-ACK feedback needs to be carried out, a first target TTI is determined;

performing HARQ-ACK feedback in the first target TTI;

the downlink information is PDSCH information or PDCCH/EPDCCH information indicating downlink SPS release, the difference value between the second TTI serial number of the first target TTI and the first TTI offset is equal to the first TTI serial number, the TTI size is 0.5ms, and the processing time capability of the terminal is minimum 6 TTIs.

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

sending downlink information in a TTI with a first TTI sequence number;

receiving HARQ-ACK feedback information sent by a terminal in a first target TTI;

the downlink information is PDSCH information or PDCCH/EPDCCH information indicating downlink SPS release, the difference value between the second TTI serial number of the first target TTI and the first TTI offset is equal to the first TTI serial number, the first TTI offset is related to the first TTI serial number, the uplink and downlink configuration mode of the currently adopted TDD frame structure and the processing time capability of the terminal, the size of the TTI is 0.5ms, and the processing time capability of the terminal is 6 TTIs at minimum.

In a third aspect, an embodiment of the present invention further provides a transmission method, applied to a terminal, including:

receiving uplink scheduling authorization information sent by network side equipment;

determining a second TTI offset according to a third TTI serial number of a TTI where the uplink scheduling authorization information is located, an uplink and downlink configuration mode of a currently adopted TDD frame structure and the processing time capability of the terminal;

determining a second target TTI;

transmitting a Physical Uplink Shared Channel (PUSCH) in the second target TTI;

and the difference value between the fourth TTI sequence number and the third TTI sequence number of the second target TTI is equal to the second TTI offset, the TTI size is 0.5ms, and the processing time capability of the terminal is minimum 6 TTIs.

In a fourth aspect, an embodiment of the present invention further provides a transmission method, applied to a network side device, including:

transmitting uplink scheduling authorization information in a TTI with a third TTI sequence number;

receiving a PUSCH transmitted by a terminal in a second target TTI;

the difference value between the fourth TTI sequence number of the second target TTI and the third TTI sequence number is equal to the second TTI offset, where the second TTI offset is related to the third TTI sequence number, the uplink and downlink configuration mode of the currently-used TDD frame structure, and the processing time capability of the terminal, the TTI size is 0.5ms, and the processing time capability of the terminal is 6 TTIs at minimum.

In a fifth aspect, an embodiment of the present invention further provides a terminal, including a processor and a receiver;

the receiver receives downlink information sent by network side equipment;

the processor is used for determining a first TTI offset according to a first TTI serial number of a transmission time interval TTI where the downlink information is located, an uplink and downlink configuration mode of a currently adopted TDD frame structure and the processing time capability of a terminal, determining a first target TTI when HARQ-ACK feedback is required, and performing HARQ-ACK feedback in the first target TTI;

In a sixth aspect, an embodiment of the present invention further provides a network-side device, including a transmitter and a receiver;

the transmitter is used for transmitting downlink information in a TTI with a first TTI sequence number;

the receiver is used for receiving HARQ-ACK feedback information sent by a terminal in a first target TTI;

In a seventh aspect, an embodiment of the present invention further provides a terminal, including a processor, a transmitter, and a receiver;

the receiver is used for receiving uplink scheduling authorization information sent by network side equipment;

the processor is used for determining a second TTI offset and determining a second target TTI according to a third TTI serial number of a TTI where the uplink scheduling authorization information is located, an uplink and downlink configuration mode of a currently adopted TDD frame structure and the processing time capability of the terminal;

the transmitter is configured to transmit a PUSCH in the second target TTI;

In an eighth aspect, an embodiment of the present invention further provides a network-side device, including a transmitter and a receiver;

wherein the transmitter is configured to transmit uplink scheduling grant information in a TTI with a third TTI sequence number;

the receiver is used for receiving the PUSCH transmitted by the terminal in a second target TTI;

In a ninth aspect, an embodiment of the present invention further provides a communication device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the feedback method or the transmission method applied to the terminal, or the steps of the feedback method or the transmission method applied to the network side device.

In a tenth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the feedback method or the transmission method applied to the terminal, or the steps of the feedback method or the transmission method applied to the network-side device.

Compared with the prior art, the HARQ feedback method, the transmission method, the terminal and the network side device provided by the embodiment of the invention can realize HARQ feedback and uplink PUSCH scheduling more suitable for the processing capability of the terminal under the condition that the processing time capability of the terminal is minimum 6 TTIs aiming at different TDD uplink and downlink configuration modes and special subframe matching modes.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described 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 to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a flowchart of a HARQ feedback method according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating a configuration of a frame configuration according to an embodiment of the present invention;

fig. 3A, fig. 3B, and fig. 3C are downlink timing diagrams of a TDD uplink/downlink configuration mode 2 according to an embodiment of the present invention, respectively, for three types of special subframe matching modes;

fig. 4 is a flowchart of another HARQ feedback method according to an embodiment of the present invention;

FIG. 5 is a flow chart of a transmission method according to an embodiment of the present invention;

fig. 6A, fig. 6B, and fig. 6C are uplink timing diagrams of the TDD uplink and downlink configuration mode 2 according to the embodiment of the present invention, respectively, for three types of special subframe matching modes;

FIG. 7 is a flow chart of another transmission method according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a network-side device 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.

Detailed Description

Referring to fig. 1, an embodiment of the present invention provides a HARQ feedback method, which is applied to a terminal, and includes the following steps:

step 101: and receiving downlink information sent by the network side equipment.

Step 102: and determining the offset of the first TTI according to the first TTI serial number of the transmission time interval TTI where the downlink information is located, the uplink and downlink configuration mode of the currently adopted TDD frame structure and the processing time capability of the terminal.

Step 103: and when HARQ-ACK feedback is needed, determining a first target TTI.

Step 104: and performing HARQ-ACK feedback in the first target TTI.

The Downlink information may be Physical Downlink Shared Channel (PDSCH) information or Physical Downlink Control Channel (PDCCH)/Enhanced Downlink Control Channel (EPDCCH) information indicating a Downlink Semi-Persistent Scheduling (SPS) release, a difference between a second TTI sequence number of the first target TTI and the first TTI offset is equal to the first TTI sequence number, the TTI size is 0.5ms, and the processing time capability of the terminal is 6 TTIs at minimum.

According to the HARQ feedback method provided by the embodiment of the invention, by reconstructing the corresponding relation among the TTI serial number of the TTI for sending the downlink information, the TTI serial number of the target TTI for carrying out HARQ-ACK feedback, the TDD uplink and downlink configuration mode and the processing time delay, the HARQ feedback more suitable for the processing capability of the terminal can be realized aiming at different TDD uplink and downlink configuration modes and special subframe matching modes under the condition that the processing time capability of the terminal is minimum 6 TTIs.

It should be noted that the HARQ feedback method provided in the embodiment of the present invention can be applied to an LTE system that adopts a TDD frame structure. For the TDD frame structure, different UL/DL configurations are considered, as shown in fig. 2, the LTE system supports 7 uplink and downlink configuration modes, i.e., uplink and downlink configuration mode 0, uplink and downlink configuration mode 1, uplink and downlink configuration mode 2, uplink and downlink configuration mode 3, uplink and downlink configuration mode 4, uplink and downlink configuration mode 5, and uplink and downlink configuration mode 6.

In addition, for the special subframe in the TDD frame structure, the embodiment of the present invention may apply a special subframe matching mode defined by 3GPP TS 36.211 of 0-9, and further, for the special subframe matching mode of 0-9, the embodiment of the present invention further adds a special subframe matching mode, wherein the ratio of DwPTS: GP: UpPTS is: 6:2:6. For convenience of description, the new special subframe matching mode is referred to as a special subframe matching mode 10, i.e. the ratio of DwPTS to GP to UpPTS of the special subframe matching mode 10 is: 6:2:6.

In the embodiment of the present invention, the size of each TTI is 0.5ms, and in the TDD frame structure, each subframe is divided into 2 TTIs, that is, each normal subframe is divided into 2 TTIs, which is also called short TTIs (sTTI). For the special subframe, considering the number of DwPTS, GP and UpPTS symbols in the special subframe, it can be distinguished, for the special

subframe configuration modes

1,2,3,4,6,7 and 8 of TDD, the DwPTS portion is divided into a 1-slot sTTI and an sTTI containing X symbols, the second sTTI can also contain symbols in GP and UpPTS, for the

special subframe configuration

0,5,9, 10, the 1 st sTTI contains all DwPTS symbols, and the 2 nd sTTI only contains uplink UpPTS symbols and GP. Accordingly, each radio frame includes 10 subframes, each subframe is divided into 2 sTTI, and each radio frame includes 20 sTTI, which may also be directly denoted as TTI for convenience of description. Furthermore, the TTI can adopt a numbering mode of numbering from 0 in the radio frame, and the TTI is sequentially numbered from 0 to 19 in the radio frame.

For the special subframe in the TDD frame structure, when a TTI structure of 0.5ms, i.e., 7 OFDM symbols, is considered, 11 special subframe matching modes corresponding to the special subframe, i.e., special subframe matching modes 0 to 10, can be divided into three types of matching modes, i.e., a first type matching mode, a second type matching mode, and a third type matching mode.

In the first configuration mode, the 1 st TTI of the 2 TTIs of the special subframe may be used for downlink transmission, and in the 2 nd TTI, because there are only 1 or 2 OFDM symbols of UpPTS, it is assumed here that there is no uplink transmission nor downlink transmission, nor uplink feedback transmission.

The second kind of matching mode may be referred to as Case2 or Class2 for short, in the second kind of matching mode, 2 TTIs of the special subframe all include OFDM symbols of DwPTS, it is assumed here that both TTIs can be used for downlink transmission, i.e. there is a downlink process and there is no uplink feedback;

the third kind of configuration mode may be referred to as Case3 or Class3 for short, in the third kind of configuration mode, the 1 st TTI of 2 TTIs of the special subframe is used for downlink scheduling and/or data transmission, and the 2 nd TTI may be used for transmission of uplink transmission and HARQ feedback of downlink PDSCH.

For better distinction and understanding of the three classes of matching patterns, here, for example, the first class of matching patterns may include special

subframe matching patterns

0,5,9, the second class of matching patterns may include special

subframe matching patterns

1,2,3,4,6,7, 8, and the third class of matching patterns may include special subframe matching pattern 10. For the convenience of describing the embodiment of the present invention, the following description will adopt the division manner of the three kinds of matching modes.

Next, with reference to table 1, the corresponding relationship between the second TTI sequence number (n) and the first TTI offset (k) is described by a one-to-one combination of 7 uplink and downlink configuration modes and three types of special subframe matching modes of the TDD frame structure. The TTI herein may be referred to as sTTI. When the terminal detects the PDSCH transmission or indicates the PDCCH/EPDCCH released by the downlink SPS in TTI n-k and needs to perform corresponding HARQ-ACK feedback, the terminal performs HARQ-ACK feedback in uplink TTI n. Where K ∈ K ', K' is { K ∈₀,k₁,…，k_M’-1And M' represents the number of downlink transmission TTIs fed back corresponding to a certain uplink feedback TTI according to the determined HARQ time sequence relation.

TABLE 1

As can be seen from table 1 above:

corresponding to a TDD uplink and downlink configuration mode 0, the number of downlink processes corresponding to the three classes is respectively 5, 6 and 5; corresponding to a TDD uplink and downlink configuration mode 1, the number of downlink processes corresponding to the three classes is respectively 8, 10 and 7; corresponding to the TDD uplink and downlink configuration mode 2, the downlink process numbers corresponding to the three classes are respectively 14, 16 and 13; corresponding to the TDD uplink and downlink configuration mode 3, the downlink process numbers corresponding to the three classes are respectively 13, 14 and 13; corresponding to the TDD uplink and downlink configuration mode 4, the downlink process numbers corresponding to the three classes are respectively 18, 20 and 17; corresponding to the TDD uplink and downlink configuration mode 5, the downlink process numbers corresponding to the three classes are respectively 24, 26 and 23; corresponding to the TDD uplink and downlink configuration mode 6, the number of downlink processes corresponding to the three classes is 7, 8, and 7, respectively.

Also, referring to table 1, it can be seen that:

when the uplink and downlink configuration mode of the TDD frame structure is 0 and a first kind of matching mode is adopted, and the serial numbers of the second TTIs are 6,7, 8, 16, 17, and 18, the offset of the first TTI is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 0 and a second-class matching mode is adopted, and the second TTI number is 6,7, 8, 9, 16, 17, 18, and 19, the first TTI offset is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 0 and the third-class matching mode is adopted, and the serial number of the second TTI is 6,7, 8, 16, 17, or 18, the offset of the first TTI is 6.

Or, when the uplink and downlink configuration mode of the TDD frame structure is 1 and a first kind of matching mode is adopted, and the serial numbers of the second TTIs are 4 and 14, the offset of the first TTI is 12 and/or 6; when the second TTI sequence number is 5, 6,7, 15, 16, 17, the first TTI offset is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 1 and a second-class matching mode is adopted, and the serial numbers of the second TTIs are 4 and 14, the offset of the first TTI is 12 and/or 11; when the serial number of the second TTI is 5 or 15, the offset of the first TTI is 7 and/or 6; when the serial number of the second TTI is 6,7, 16, 17, the offset of the first TTI is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 1 and a third-class matching mode is adopted, and the serial number of the second TTI is 3 or 13, the offset of the first TTI is 11; and when the second TTI sequence number is 4, 5, 6,7, 14, 15, 16, 17, the first TTI offset is 6.

Or, when the uplink and downlink configuration mode of the TDD frame structure is 2 and a first configuration mode is adopted, and the serial number of the second TTI is 4 or 14, the offset of the first TTI is at least one of 14, 13, 12, and 8; when the second TTI serial number is 5 or 15, the first TTI offset is at least one of 8, 7 and 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 2 and a second-class matching mode is adopted, and the second TTI sequence number is 4 or 14, the offset of the first TTI is at least one of 14, 13, 12, and 11; when the second TTI sequence number is 5 or 15, the first TTI offset is at least one of 9, 8, 7, and 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 2 and a third-class matching mode is adopted, and the serial number of the second TTI is 3 or 13, the offset of the first TTI is at least one of 13, 12, and 11; when the second TTI sequence number is 4, 14, the first TTI offset is 8 and/or 7; and when the second TTI serial number is 5 or 15, the first TTI offset is 7 and/or 6.

Or, when the uplink and downlink configuration mode of the TDD frame structure is 3 and a first configuration mode is adopted, and the second TTI number is 4, the offset of the first TTI is at least one of 14, 13, and 12; when the second TTI sequence number is 5, the first TTI offset is 12 and/or 11; when the second TTI sequence number is 6, the first TTI offset is 11 and/or 10; when the second TTI sequence number is 7, the first TTI offset is 10 and/or 9; when the second TTI sequence number is 8, the first TTI offset is 9 and/or 8; when the second TTI sequence number is 9, the first TTI offset is 8 and/or 7;

or, when the uplink and downlink configuration mode of the TDD frame structure is 3 and a second-class matching mode is adopted, and the second TTI sequence number is 4, the offset of the first TTI is at least one of 14, 13, and 12; when the second TTI sequence number is 5, the first TTI offset is at least one of 12, 11, and 10; when the second TTI sequence number is 6, the first TTI offset is 10 and/or 9; when the second TTI sequence number is 7, the first TTI offset is 9 and/or 8; when the second TTI sequence number is 8, the first TTI offset is 8 and/or 7; when the second TTI sequence number is 9, the first TTI offset is 7 and/or 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 3 and a third-class matching mode is adopted, and the serial number of the second TTI is 3, the offset of the first TTI is 13 and/or 12; when the second TTI sequence number is 4, the first TTI offset is 12 and/or 11; when the second TTI sequence number is 5, the first TTI offset is 11 and/or 10; when the second TTI sequence number is 6, the first TTI offset is 10 and/or 9; when the second TTI sequence number is 7, the first TTI offset is 9 and/or 8; when the second TTI sequence number is 8, the first TTI offset is 8 and/or 7; and when the second TTI sequence number is 9, the first TTI offset is 7.

Or, when the uplink and downlink configuration mode of the TDD frame structure is 4 and a first configuration mode is adopted, and the second TTI number is 4, the offset of the first TTI is at least one of 22, 16, 15, and 14; when the second TTI sequence number is 5, the first TTI offset is at least one of 14, 13, 12, and 11; when the second TTI sequence number is 6, the first TTI offset is at least one of 11, 10, 9, and 8; when the second TTI sequence number is 7, the first TTI offset is at least one of 8, 7 and 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 4 and a second-class matching mode is adopted, and the second TTI number is 4, the offset of the first TTI is at least one of 22, 21, 16, and 15; when the second TTI sequence number is 5, the first TTI offset is at least one of 15, 14, 13, and 12; when the second TTI sequence number is 6, the first TTI offset is at least one of 12, 11, 10, and 9; when the second TTI sequence number is 7, the first TTI offset is at least one of 9, 8, 7, and 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 4 and a third-class matching mode is adopted, and the second TTI sequence number is 3, the offset of the first TTI is at least one of 21, 15, and 14; when the second TTI sequence number is 4, the first TTI offset is at least one of 14, 13, and 12; when the second TTI sequence number is 5, the first TTI offset is at least one of 12, 11, and 10; when the second TTI sequence number is 6, the first TTI offset is at least one of 10, 9, and 8; and when the second TTI sequence number is 7, the first TTI offset is at least one of 8, 7 and 6.

Or, when the uplink and downlink configuration mode of the TDD frame structure is 5 and a first configuration mode is adopted, and the second TTI number is 4, the first TTI offset is at least one of 24, 23, 22, 18, 17, 16, 15, 14, and 13; when the second TTI sequence number is 5, the first TTI offset is at least one of 13, 12, 11, 10, 9, 8, 7, and 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 5 and a second-class configuration mode is adopted, and the second TTI number is 4, the first TTI offset is at least one of 24, 23, 22, 21, 18, 17, 16, 15, and 14; when the second TTI sequence number is 5, the first TTI offset is at least one of 14, 13, 12, 11, 10, 9, 8, 7, and 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 5 and a third-class matching mode is adopted, and the second TTI number is 3, the offset of the first TTI is at least one of 23, 22, 21, 17, 16, and 15; when the second TTI sequence number is 4, the first TTI offset is at least one of 15, 14, 13, 12, 11, and 10; and when the second TTI sequence number is 5, the first TTI offset is at least one of 10, 9, 8, 7 and 6.

Or, when the uplink and downlink configuration mode of the TDD frame structure is 6 and a first kind of matching mode is adopted, and the serial number of the second TTI is 4, the offset of the first TTI is 12; when the serial number of the second TTI is 5, 6,7, 8, 9, the offset of the first TTI is 7; when the second TTI serial number is 16, 17, the first TTI offset is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 6 and a second-class matching mode is adopted, and the second TTI sequence number is 4, the offset of the first TTI is 12 and/or 11; the second TTI sequence number is 5, and the first TTI offset is 7 and/or 6; when the second TTI sequence number is 6,7, 8, 9, 16, 17, the first TTI offset is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 6 and a third-class matching mode is adopted, and the serial number of the second TTI is 3, the offset of the first TTI is 11; and when the second TTI sequence number is 4, 5, 6,7, 8, 16, 17, the first TTI offset is 6.

For the above offset setting, there may be other partitioning methods, for example, for

special subframes

1,2,6, and 7, if it is considered that downlink traffic data is not transmitted in the second TTI, for these configurations, the offset of HARQ feedback for downlink transmission may refer to

special subframe configuration

0,5, and 9, that is, the same offset as that of class 1.

It should be noted that, for the uplink and

downlink configuration modes

0, 1, and 2, since the uplink and downlink switching period is 5ms, and the first half frame and the second half frame are completely symmetrical, the TTI number may only correspond to 5ms of the existing LTE, that is, the number is 0 to 9.

With reference to fig. 3A, fig. 3B and fig. 3C, a downlink configuration mode 2 of a TDD frame structure is taken as an example, and downlink timing design is respectively described for three types of special subframe matching modes.

Referring to fig. 3A, fig. 3B and fig. 3C, wherein "↓" n "indicates a downlink HARQ process n, and a square where" ↓ "n" is located indicates a TTI for the downlink HARQ process n; ") n represents uplink HARQ feedback of a downlink HARQ process n, and a grid where" ± n "represents a TTI for transmitting the uplink HARQ feedback of the downlink HARQ process n; "a" n "represents an optional TTI for transmitting uplink HARQ feedback for downlink HARQ process n. The blank squares have neither upstream nor downstream processes.

Specifically, fig. 3A shows that there are 14 downlink processes for Class1, and the RTT is 10 ms. Fig. 3B shows a total of 16 downstream processes for Class2 with an RTT of 10 ms. Fig. 3C shows a total of 13 downstream processes for Class3 with an RTT of 9.29 ms.

Referring to fig. 4, an embodiment of the present invention further provides a HARQ feedback method, which is applied to a network side device, and includes the following steps:

step 401: and sending the downlink information in the TTI with the first TTI sequence number.

Step 404: and receiving HARQ-ACK feedback information sent by the terminal in the first target TTI.

In the embodiment of the present invention, in the TDD frame structure, each subframe is divided into 2 TTIs; the 11 special subframe matching modes corresponding to the special subframes in the TDD frame structure are divided into three types of matching modes: a first class matching mode, a second class matching mode and a third class matching mode;

in the first matching mode, the 1 st TTI of the 2 TTIs of the special subframe is used for downlink transmission, and the 2 nd TTI is not used for uplink transmission or downlink transmission and does not have uplink feedback transmission;

in the second type of matching mode, 2 TTIs of the special subframe are all used for downlink transmission, and no uplink feedback exists;

in the third kind of matching mode, the 1 st TTI of the 2 TTIs of the special subframe is used for downlink scheduling and/or data transmission, and the 2 nd TTI is used for uplink transmission and transmission of HARQ feedback of a downlink PDSCH.

subframe matching patterns

0,5,9, the second class of matching patterns may include special

subframe matching patterns

1,2,3,4,6,7, 8, and the third class of matching patterns may include special subframe matching pattern 10.

Next, the corresponding relationship between the second TTI sequence number and the first TTI offset is described by a one-to-one combination of 7 uplink and downlink configuration modes and three types of special subframe matching modes of the TDD frame structure. The TTIs are numbered sequentially from 0 within the radio frame.

Specifically, when the uplink and downlink configuration mode of the TDD frame structure is 0 and the first-class matching mode is adopted, and the serial number of the second TTI is 6,7, 8, 16, 17, 18, the offset of the first TTI is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 0 and a third-class matching mode is adopted, and the serial number of the second TTI is 6,7, 8, 16, 17, or 18, the offset of the first TTI is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 1 and a third-class matching mode is adopted, and the serial number of the second TTI is 3 or 13, the offset of the first TTI is 11; when the second TTI number is 4, 5, 6,7, 14, 15, 16, 17, the first TTI offset is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 2 and a third-class matching mode is adopted, and the serial number of the second TTI is 3 or 13, the offset of the first TTI is at least one of 13, 12, and 11; when the second TTI sequence number is 4, 14, the first TTI offset is 8 and/or 7; when the serial number of the second TTI is 5 or 15, the offset of the first TTI is 7 and/or 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 3 and a third-class matching mode is adopted, and the serial number of the second TTI is 3, the offset of the first TTI is 13 and/or 12; when the second TTI sequence number is 4, the first TTI offset is 12 and/or 11; when the second TTI sequence number is 5, the first TTI offset is 11 and/or 10; when the second TTI sequence number is 6, the first TTI offset is 10 and/or 9; when the second TTI sequence number is 7, the first TTI offset is 9 and/or 8; when the second TTI sequence number is 8, the first TTI offset is 8 and/or 7; when the second TTI sequence number is 9, the first TTI offset is 7;

or, when the uplink and downlink configuration mode of the TDD frame structure is 4 and a third-class matching mode is adopted, and the second TTI sequence number is 3, the offset of the first TTI is at least one of 21, 15, and 14; when the second TTI sequence number is 4, the first TTI offset is at least one of 14, 13, and 12; when the second TTI sequence number is 5, the first TTI offset is at least one of 12, 11, and 10; when the second TTI sequence number is 6, the first TTI offset is at least one of 10, 9, and 8; when the second TTI sequence number is 7, the first TTI offset is at least one of 8, 7 and 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 5 and a third-class matching mode is adopted, and the second TTI number is 3, the offset of the first TTI is at least one of 23, 22, 21, 17, 16, and 15; when the second TTI sequence number is 4, the first TTI offset is at least one of 15, 14, 13, 12, 11, and 10; when the second TTI sequence number is 5, the first TTI offset is at least one of 10, 9, 8, 7, and 6;

Referring to fig. 5, an embodiment of the present invention further provides a transmission method, applied to a terminal, including the following steps:

step 501: and receiving uplink scheduling authorization information sent by the network side equipment.

Step 502: and determining the offset of the second TTI according to the third TTI serial number of the TTI where the uplink scheduling authorization information is located, the uplink and downlink configuration mode of the currently adopted TDD frame structure and the processing time capability of the terminal.

Step 503: a second target TTI is determined.

Step 504: and transmitting a Physical Uplink Shared Channel (PUSCH) in the second target TTI.

According to the transmission method provided by the embodiment of the invention, by reconstructing the corresponding relation among the TTI serial number of the TTI for sending the uplink scheduling authorization information, the TTI serial number of the target TTI for transmitting the PUSCH, the TDD uplink and downlink configuration mode and the processing time delay, the scheduling of the uplink PUSCH more suitable for the processing capability of the terminal can be realized aiming at different TDD uplink and downlink configuration modes and special subframe matching modes under the condition that the processing time capability of the terminal is minimum 6 TTIs.

For the special subframe in the TDD frame structure, the embodiment of the present invention may apply a special subframe matching mode defined by 3GPP TS 36.211 of 0-9, and further, for the special subframe matching mode of 0-9, the embodiment of the present invention further adds a special subframe matching mode, wherein the ratio of DwPTS: GP: UpPTS is: 6:2:6. For convenience of description, the new special subframe matching mode is referred to as a special subframe matching mode 10, i.e. the ratio of DwPTS to GP to UpPTS of the special subframe matching mode 10 is: 6:2:6. In the TDD frame structure, each subframe is divided into 2 TTIs.

In the embodiment of the present invention, the 11 special subframe matching modes corresponding to the special subframes in the TDD frame structure are divided into three types of matching modes: a first class matching mode, a second class matching mode and a third class matching mode;

the first matching mode can be called Case1 or Class1 for short, in the first matching mode, the 1 st TTI of 2 TTIs of the special subframe is used for downlink transmission, and the 2 nd TTI is not used for uplink transmission or downlink transmission and does not have uplink feedback transmission;

in the second type matching mode, the special subframe can be called Case2 or Class2 for short, and in the second type matching mode, 2 TTIs of the special subframe are all used for downlink transmission and uplink feedback does not exist;

the third kind of matching mode may be referred to as Case3 or Class3 for short, in the third kind of matching mode, the 1 st TTI of 2 TTIs of the special subframe is used for downlink scheduling and/or data transmission, and the 2 nd TTI is used for uplink transmission and transmission of HARQ feedback of downlink PDSCH.

subframe matching patterns

0,5,9, the second class of matching patterns may include special

subframe matching patterns

Next, with reference to table 2, the corresponding relationship between the third TTI sequence number (m) and the second TTI offset (h) is described by a combination of the uplink and

downlink configuration modes

1 and 2 of the TDD frame structure and three types of special subframe matching modes. The TTI herein may be referred to as sTTI. And when the terminal detects the uplink scheduling authorization information carried in the PDCCH/EPDCCH in the sTTI m, adjusting the corresponding PUSCH transmission in the sTTI m + h.

TABLE 2

From table 2 above, it can be seen that:

when the uplink and downlink configuration mode of the TDD frame structure is 1 and the first-class matching mode is adopted, and the serial number of the third TTI is 0, 1, 8, 9, 10, 11, 18, and 19, the offset of the second TTI is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 1 and a second-class matching mode is adopted, and the third TTI number is 0, 1, 8, 9, 10, 11, 18, and 19, the second TTI offset is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 1 and a third-class matching mode is adopted, and the third TTI number is 0, 1, 8, 9, 10, 11, 18, and 19, the second TTI offset is 6; and when the third TTI sequence number is 2 and 12, the second TTI offset is 11.

Or, when the uplink and downlink configuration mode of the TDD frame structure is 2 and the first kind of matching mode is adopted, and the sequence number of the third TTI is 8, 9, 18, or 19, the offset of the second TTI is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 2 and a second-class matching mode is adopted, and the sequence number of the third TTI is 8, 9, 18, or 19, the offset of the second TTI is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 2 and a third-class matching mode is adopted, and the third TTI number is 7, 8, 9, 17, 18, or 19, the second TTI offset is 6.

With reference to fig. 6A, fig. 6B, and fig. 6C, the following describes uplink timing design for three types of special subframe matching modes, taking an uplink/downlink configuration mode 2 of a TDD frame structure as an example.

Referring to fig. 6A, fig. 6B and fig. 6C, wherein "↓" n "indicates an upstream process n, a cell where" ↓ "n" is located indicates a TTI for the upstream process n, a cell where "↓" n "is located immediately before the upstream process, which is the same as the upstream process number, indicates a downstream process n for scheduling the upstream process n, and a cell where" ↓ "n" is located indicates a TTI for the downstream process n. The blank squares have neither upstream nor downstream processes.

Specifically, fig. 6A has 4 upstream processes for Class 1. Fig. 3B has a total of 4 upstream processes for Class 2. Fig. 3C has a total of 5 upstream processes for Class 3.

Referring to fig. 7, an embodiment of the present invention further provides a transmission method, which is applied to a network side device, and includes the following steps:

step 701: and transmitting the uplink scheduling authorization information in the TTI with the third TTI sequence number.

Step 702: and receiving the PUSCH transmitted by the terminal in the second target TTI.

In the embodiment of the invention, in the TDD frame structure, each subframe is divided into 2 TTIs; the 11 special subframe matching modes corresponding to the special subframes in the TDD frame structure are divided into three types of matching modes: a first class matching mode, a second class matching mode and a third class matching mode;

Optionally, when the uplink and downlink configuration mode of the TDD frame structure is 1 and the first-class matching mode is adopted, and the sequence number of the third TTI is 0, 1, 8, 9, 10, 11, 18, and 19, the offset of the second TTI is 6;

or, when the uplink and downlink configuration mode of the TDD frame structure is 1 and a third-class matching mode is adopted, and the third TTI number is 0, 1, 8, 9, 10, 11, 18, and 19, the second TTI offset is 6; when the third TTI sequence number is 2, 12, the second TTI offset is 11;

The above embodiments describe the method according to the present invention, and the terminal and the network side device according to the present invention will be described with reference to the embodiments and the drawings.

Referring to fig. 8, an embodiment of the present invention further provides a terminal, which includes a processor 81, a transmitter 82, and a receiver 83.

The receiver 83 receives downlink information sent by a network side device;

the processor 81 is configured to determine a first TTI offset according to a first TTI sequence number of a transmission time interval TTI in which the downlink information is located, an uplink/downlink configuration mode of a currently-used TDD frame structure, and a processing time capability of a terminal, determine a first target TTI when HARQ-ACK feedback is required, and perform HARQ-ACK feedback in the first target TTI;

The terminal of the embodiment of the invention can realize HARQ feedback more suitable for the processing capability of the terminal aiming at different TDD uplink and downlink configuration modes and special subframe matching modes under the condition that the processing time capability of the terminal is minimum 6 TTIs by reconstructing the corresponding relation of the TTI serial number of the TTI for sending the downlink information, the TTI serial number of the target TTI for carrying out HARQ-ACK feedback, the TDD uplink and downlink configuration mode and the processing time delay.

Optionally, each subframe is divided into 2 TTIs; the 11 special subframe matching modes corresponding to the special subframes in the TDD frame structure are divided into three types of matching modes: a first class matching mode, a second class matching mode and a third class matching mode;

Optionally, the TTI uses a numbering mode that numbers sequentially from 0 in a radio frame; when the uplink and downlink configuration mode of the TDD frame structure is 0 and a first kind of matching mode is adopted, and the serial numbers of the second TTIs are 6,7, 8, 16, 17, and 18, the offset of the first TTI is 6;

In FIG. 8, a bus architecture (represented by bus 80), bus 80 may include any number of interconnected buses and bridges, with bus 80 connecting together various circuits including one or more processors, represented by processor 81, and memory, represented by memory 84. The transmitter 82 and the receiver 83 may be a transceiver interface, and the transmitter 82 and the receiver 83 may be connected to the processor 81 and the memory 84 through the bus 80.

The processor 81 is responsible for managing the bus 80 and general processing, while the memory 84 may be used for storing data used by the processor 81 in performing operations.

Referring to fig. 9, an embodiment of the present invention further provides a network-side device, which includes a processor 91, a transmitter 92, and a receiver 93.

Wherein, the transmitter 92 is configured to transmit downlink information in a TTI with a first TTI sequence number;

the receiver 93 is configured to receive HARQ-ACK feedback information sent by a terminal in a first target TTI;

The network side device provided by the embodiment of the invention can realize HARQ feedback more suitable for the processing capability of the terminal under the condition that the processing time capability of the terminal is minimum 6 TTIs aiming at different TDD uplink and downlink configuration modes and special subframe matching modes by reconstructing the corresponding relation among the TTI serial number of the TTI for sending the downlink information, the TTI serial number of the target TTI for carrying out HARQ-ACK feedback, the TDD uplink and downlink configuration mode and the processing time delay.

Optionally, in the TDD frame structure, each subframe is divided into 2 TTIs;

the 11 special subframe matching modes corresponding to the special subframes in the TDD frame structure are divided into three types of matching modes: a first class matching mode, a second class matching mode and a third class matching mode;

in the first matching mode, the 1 st TTI of the 2 TTIs of the special subframe is used for downlink transmission, and the 2 nd TTI is not used for uplink transmission or downlink transmission and has no uplink feedback;

in the second type of matching mode, 2 TTIs of the special subframe are all used for downlink transmission, and uplink feedback transmission does not exist;

In FIG. 9, a bus architecture (represented by bus 90), bus 90 may include any number of interconnected buses and bridges, bus 90 connecting together various circuits including one or more processors, represented by processor 91, and memory, represented by memory 94. The transmitter 92 and the receiver 93 may be a transceiver interface, and the transmitter 92 and the receiver 93 may be connected to the processor 91 and the memory 94 through the bus 90.

The processor 91 is responsible for managing the bus 90 and general processing, and the memory 94 may be used for storing data used by the processor 91 in performing operations.

Referring to fig. 10, an embodiment of the present invention further provides a terminal, which includes a processor 111, a transmitter 112, and a receiver 113.

The receiver 113 is configured to receive uplink scheduling grant information sent by a network side device;

the processor 111 is configured to determine a second TTI offset and determine a second target TTI according to a third TTI sequence number of a TTI in which the uplink scheduling grant information is located, an uplink/downlink configuration mode of a currently-used TDD frame structure, and a processing time capability of the terminal;

the transmitter 112 is configured to transmit a PUSCH in the second target TTI;

The terminal of the embodiment of the invention can realize the scheduling of the uplink PUSCH more suitable for the processing capability of the terminal under the condition of meeting the requirement that the processing time capability of the terminal is minimum 6 TTIs aiming at different TDD uplink and downlink configuration modes and special subframe matching modes by reconstructing the corresponding relation among the TTI serial number of the TTI for sending the uplink scheduling authorization information, the TTI serial number of the target TTI for transmitting the PUSCH, the TDD uplink and downlink configuration mode and the processing time delay.

Optionally, in the TDD frame structure, each subframe is divided into 2 TTIs; the 11 special subframe matching modes corresponding to the special subframes in the TDD frame structure are divided into three types of matching modes: a first class matching mode, a second class matching mode and a third class matching mode;

In FIG. 10, a bus architecture (represented by bus 110), bus 110 may include any number of interconnected buses and bridges, with bus 110 connecting various circuits including one or more processors, represented by processor 111, and memory, represented by memory 114. The transmitter 112 and the receiver 113 may be a transceiving interface, and the transmitter 112 and the receiver 113 may be connected to the processor 111 and the memory 114 through the bus 110.

The processor 111 is responsible for managing the bus 110 and general processing, while the memory 114 may be used to store data used by the processor 111 in performing operations.

Referring to fig. 11, an embodiment of the present invention further provides a network side device, where the network side device includes a processor 121, a transmitter 122, and a receiver 123.

Wherein the transmitter 122 is configured to transmit the uplink scheduling grant information in a TTI with a third TTI sequence number;

the receiver 123 is configured to receive a PUSCH transmitted by a terminal in a second target TTI;

The network side equipment of the embodiment of the invention can realize the scheduling of the uplink PUSCH which is more suitable for the processing capability of the terminal under the condition of meeting the requirement that the processing time capability of the terminal is minimum 6 TTIs aiming at different TDD uplink and downlink configuration modes and special subframe proportioning modes by reconstructing the corresponding relation among the TTI serial number of the TTI for sending the uplink scheduling authorization information, the TTI serial number of the target TTI for transmitting the PUSCH, the TDD uplink and downlink configuration modes and the processing time delay.

In FIG. 11, a bus architecture (represented by bus 120), bus 120 may include any number of interconnected buses and bridges, bus 120 connecting together various circuits including one or more processors, represented by processor 121, and memory, represented by memory 124. The transmitter 122 and the receiver 123 may be a transceiving interface, and the transmitter 122 and the receiver 123 may be connected to the processor 121 and the memory 124 through the bus 120.

The processor 121 is responsible for managing the bus 120 and general processing, and the memory 124 may be used for storing data used by the processor 121 in performing operations.

In addition, an embodiment of the present invention further provides a communication device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the computer program, when executed by the processor, implements the processes of the feedback method or transmission method embodiment applied to the terminal, or the processes of the feedback method or transmission method embodiment applied to the network side device, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The communication device may be a terminal or a network side device.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored thereon, where the computer program, when executed by a processor, implements the processes in the feedback method or transmission method embodiment applied to the terminal, or the processes in the feedback method or transmission method embodiment applied to the network side device, and can achieve the same technical effects, and in order to avoid repetition, the descriptions are omitted here. The computer-readable storage medium can be applied to a terminal or a network side device.

Computer-readable media, which include both non-transitory and non-transitory, removable and non-removable media, may implement the information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

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.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

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 device (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.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A HARQ feedback method of hybrid automatic repeat request is applied to a terminal, and is characterized by comprising the following steps:

receiving downlink information sent by network side equipment;

performing HARQ-ACK feedback in the first target TTI;

the downlink information is downlink shared channel PDSCH information or downlink control channel PDCCH/enhanced downlink control channel EPDCCH information indicating downlink semi-persistent scheduling SPS release, the difference value between the second TTI serial number of the first target TTI and the first TTI offset is equal to the first TTI serial number, the TTI size is 0.5ms, and the processing time capability of the terminal is 6 TTIs at minimum.

2. The feedback method according to claim 1, wherein each subframe in the TDD frame structure is divided into 2 TTIs;

3. The feedback method of claim 2, wherein the TTIs are numbered sequentially starting from 0 within a radio frame;

4. A HARQ feedback method is applied to network side equipment and is characterized by comprising the following steps:

sending downlink information in a TTI with a first TTI sequence number;

5. The feedback method according to claim 4, wherein each subframe in the TDD frame structure is divided into 2 TTIs;

6. The feedback method of claim 5, wherein the TTIs are numbered sequentially starting from 0 within a radio frame;

7. A transmission method applied to a terminal is characterized by comprising the following steps:

determining a second target TTI;

transmitting a Physical Uplink Shared Channel (PUSCH) in the second target TTI;

8. The transmission method according to claim 7, wherein in the TDD frame structure, each subframe is divided into 2 TTIs;

9. The transmission method according to claim 8, wherein when the uplink/downlink configuration mode of the TDD frame structure is 1 and the first configuration mode is adopted, and the third TTI number is 0, 1, 8, 9, 10, 11, 18, and 19, the second TTI offset is 6;

10. A transmission method is applied to network side equipment, and is characterized by comprising the following steps:

receiving a PUSCH transmitted by a terminal in a second target TTI;

the difference value between the fourth TTI sequence number of the second target TTI and the third TTI sequence number is equal to a second TTI offset, where the second TTI offset is related to the third TTI sequence number, the uplink and downlink configuration mode of the currently-used TDD frame structure, and the processing time capability of the terminal, the size of the TTI is 0.5ms, and the processing time capability of the terminal is 6 TTIs at minimum.

11. The transmission method according to claim 10, wherein in the TDD frame structure, each subframe is divided into 2 TTIs;

12. The transmission method according to claim 11, wherein when the uplink/downlink configuration mode of the TDD frame structure is 1 and the first configuration mode is adopted, and the third TTI number is 0, 1, 8, 9, 10, 11, 18, and 19, the second TTI offset is 6;

13. A terminal comprising a processor and a receiver;

the receiver receives downlink information sent by network side equipment;

14. The terminal of claim 13, wherein each subframe in the TDD frame structure is divided into 2 TTIs;

15. The terminal of claim 14, wherein the TTIs are numbered sequentially starting from 0 within a radio frame;

16. A network side device, comprising a transmitter and a receiver;

17. The network device of claim 16, wherein in the TDD frame structure, each subframe is divided into 2 TTIs;

18. The network-side device of claim 17, wherein the TTIs are numbered sequentially starting from 0 within a radio frame;

19. A terminal comprising a processor, a transmitter and a receiver;

the transmitter is configured to transmit a PUSCH in the second target TTI;

20. The terminal of claim 19, wherein each subframe in the TDD frame structure is divided into 2 TTIs;

21. The terminal of claim 20, wherein when the uplink and downlink configuration mode of the TDD frame structure is 1 and a first configuration mode is adopted, and the third TTI number is 0, 1, 8, 9, 10, 11, 18, and 19, the second TTI offset is 6;

22. A network side device, comprising a transmitter and a receiver;

23. The network device of claim 22, wherein in the TDD frame structure, each subframe is divided into 2 TTIs;

24. The network-side device of claim 23, wherein when an uplink and downlink configuration mode of the TDD frame structure is 1 and a first configuration mode is adopted, and the third TTI number is 0, 1, 8, 9, 10, 11, 18, and 19, the second TTI offset is 6;

25. A communication device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the computer program realizes the steps of the feedback method according to any one of claims 1 to 3, or the steps of the feedback method according to any one of claims 4 to 6, or the steps of the transmission method according to any one of claims 7 to 9, or the steps of the transmission method according to any one of claims 10 to 12 when executed by the processor.

26. 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 feedback method according to any one of claims 1 to 3, or the steps of the feedback method according to any one of claims 4 to 6, or the steps of the transmission method according to any one of claims 7 to 9, or the steps of the transmission method according to any one of claims 10 to 12.