CN110139242B

CN110139242B - Data transmission method, device, equipment and computer readable storage medium

Info

Publication number: CN110139242B
Application number: CN201810136188.0A
Authority: CN
Inventors: 冯媛; 彭莹; 赵锐; 李媛媛
Original assignee: Telecommunications Science and Technology Research Institute Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-02-09
Filing date: 2018-02-09
Publication date: 2021-03-05
Anticipated expiration: 2038-02-09
Also published as: WO2019154274A1; CN110139242A

Abstract

The embodiment of the invention provides a data transmission method, a data transmission device, data transmission equipment and a computer readable storage medium, relates to the technical field of communication, and aims to improve the data transmission rate. The data transmission method of the invention comprises the following steps: acquiring configuration information of a transmission mode; under the condition that the transmission mode configuration information indicates that data transmission needs to be carried out by using continuous Transmission Time Intervals (TTI), transmitting data to be transmitted to a receiving end by using M continuous TTIs on the same carrier wave; in M continuous TTIs, data mapping is carried out from the 1 st TTI to the last symbol of the M-1 th TTI, the last symbol of the M-th TTI is used as GP, M is an integer and is more than or equal to 2. The embodiment of the invention can improve the data transmission rate.

Description

Data transmission method, device, equipment and computer readable storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method, an apparatus, a device, and a computer-readable storage medium.

Background

In the existing LTE (Long Term Evolution) V2X (Vehicle to X, where X stands for Infrastructure (Infrastructure), Vehicle (Vehicle), person (Pedestrian), etc., and X may also be any possible "person or thing" (eventing)) technology (such as Rel-14LTE V2X technology), a PC5 interface (also called a direct link, described as sildenk in the protocol) that transmits data between a V2X terminal and a V2X terminal may already support transmission of basic traffic based on road security, where mainly oriented to a traffic packet size between 50-1200bytes, and the reliability of transmission of the required traffic packet within the specified coverage is greater than 95%.

With the further development of the car networking technology, new application scenarios such as vehicle formation, advanced driving, sensor information sharing, remote control and the like occur, a higher requirement is put forward on a direct link between the V2X terminal and the V2X terminal, the carried data packet is required to be larger, the transmission reliability is higher (the reliability of transmission required by some applications needs to reach 99.999%), and the transmission distance is farther.

While the system bandwidth may be large under R16NR (New Radio, New air interface), one symbol may carry more data, and the NR has a higher requirement for the data rate. However, in the existing data transmission method, each symbol of the subframe cannot be reasonably utilized, so that the method cannot adapt to future data.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a data transmission method, apparatus, device and computer readable storage medium for increasing a data transmission rate.

To solve the foregoing technical problem, in a first aspect, an embodiment of the present invention provides a data transmission method applied to a V2X terminal serving as a sending end, including:

acquiring configuration information of a transmission mode;

under the condition that the transmission mode configuration information indicates that data transmission needs to be carried out by using continuous Transmission Time Intervals (TTI), transmitting data to be transmitted to a receiving end by using M continuous TTIs on the same carrier wave;

in M continuous TTIs, data mapping is carried out from the 1 st TTI to the last symbol of the M-1 th TTI, the last symbol of the M-th TTI is used as GP, M is an integer and is more than or equal to 2.

Wherein the acquiring the transmission mode configuration information includes:

acquiring transmission mode configuration information sent by network side equipment; or

And acquiring the transmission mode configuration information of the system configuration.

Wherein, the sending data to be transmitted to the receiving end by using M continuous TTIs on the same carrier wave comprises:

under the condition that the transmission mode configuration information indicates that target service type or target direct communication data packet priority PPPP or target QoS must utilize continuous TTIs (transmission time intervals) for data transmission, transmitting data to be transmitted by utilizing M continuous TTIs on the same carrier for the data to be transmitted of the target service type or the target PPPP or the target QoS; and/or

And under the condition that the transmission mode configuration information indicates that the target resource pool has to use continuous TTIs for data transmission, when the target resource pool is used for data transmission, transmitting data to be transmitted by using M continuous TTIs on the same carrier wave.

Wherein, when the transmission mode configuration information indicates that the target service class, the target PPPP, or the target QoS can utilize consecutive TTIs for data transmission, the method further includes:

transmitting transmission mode indication information to a receiving end;

the transmission mode indication information is used for indicating a target service type or a target PPPP or a target QoS or whether data transmission is carried out by continuous TTI in a target resource pool.

Wherein, the sending the transmission mode indication information to the receiving end includes:

transmitting transmission mode indication information to a receiving end by using target information in the scheduling assignment SA; and/or

Transmitting transmission mode indication information to a receiving end by using a reserved bit in the SA;

wherein the target information is information indicating a transmission capability of the V2X terminal as a transmitting end.

Before or after the obtaining of the transmission mode configuration information, the method further includes:

consecutive M TTIs are selected for data transmission.

Wherein the selecting consecutive M TTIs for data transmission comprises:

acquiring a set transmission frequency N, wherein N is an integer and is more than or equal to 2;

searching for idle TTIs meeting continuous M-time transmission in the candidate resources, and taking the idle TTIs meeting the continuous M-time transmission as continuous M TTIs for data transmission;

wherein M < N;

wherein the M consecutive TTIs have the same or different frequency domain resources; or the M consecutive TTIs correspond to the same transport block, TB, or different TBs for the same V2X terminal.

Wherein the M consecutive TTIs have the same or different frequency domain resources; or

For the same V2X terminal, the M consecutive TTIs correspond to the same transport block, TB, or different TBs; or

For the same TB of the same V2X terminal, data transmission is preferentially performed using consecutive TTIs.

In a second aspect, an embodiment of the present invention provides a data transmission method, which is applied to V2X serving as a receiving end, and includes:

receiving data sent by a sending end;

determining whether the sending end utilizes continuous TTI to carry out data transmission;

if the sending end is determined to utilize continuous TTI to carry out data transmission, merging the data transmitted by M continuous TTIs on the same carrier wave by the sending end in the data;

Wherein the determining whether the transmitting end utilizes continuous TTIs for data transmission includes:

acquiring transmission mode configuration information sent by network side equipment, or acquiring transmission mode configuration information configured by a system, or acquiring transmission mode indication information sent by a sending end;

and determining that the transmitting end utilizes continuous TTIs for data transmission when the transmission mode configuration information or the transmission mode indication information indicates that the transmitting end utilizes continuous TTIs for data transmission.

Wherein, when the transmission mode configuration information indicates that the transmitting end utilizes continuous TTIs for data transmission, determining that the transmitting end utilizes continuous TTIs for data transmission includes:

determining that the sending end utilizes continuous TTI to transmit data under the condition that the transmission mode configuration information indicates that target service or target service category or target PPPP or target QoS needs to utilize continuous TTI to transmit data; and/or

And under the condition that the transmission mode configuration information indicates that the target resource pool needs to utilize continuous TTIs for data transmission, determining that the sending end utilizes the continuous TTIs for data transmission.

When the transmission mode indication information indicates that the transmitting end utilizes continuous TTIs for data transmission, determining that the transmitting end utilizes continuous TTIs for data transmission comprises:

when the target information in the SA is preset information and/or the reserved bit in the SA is a preset value, determining that the sending end utilizes continuous TTI to perform data transmission;

the target information is information used for representing the transmission capability of the sending end.

under the condition that the information in the SA indicates that the time interval between resources is 1, blind detection is carried out on the received data; the blind detection result comprises a first blind detection result and a second blind detection result, the first blind detection result is the blind detection result when the last symbol from the 1 st TTI to the M-1 st TTI is assumed to be subjected to data mapping, and the second blind detection result is the blind detection result when the last symbol from the 1 st TTI to the M-1 st TTI is not subjected to data mapping;

respectively checking the first blind test result and the second blind test result;

under the condition that the first blind detection result is accurately checked, determining that the sending end utilizes continuous TTI to carry out data transmission; and under the condition that the second blind detection result is accurately checked, determining that the sending end does not utilize continuous TTI for data transmission.

In a third aspect, an embodiment of the present invention provides a data transmission method, which is applied to a network device, and includes:

selecting TTIs to be allocated for data transmission; wherein, the selected TTIs to be allocated are continuous TTIs;

and transmitting transmission mode configuration information to the terminal according to the selected TTI to be allocated, wherein the transmission mode configuration information indicates that continuous TTIs are required to be utilized for data transmission.

Wherein the selecting the TTI to be allocated for data transmission comprises:

in the candidate resources, searching idle TTI meeting continuous P times of transmission as TTI to be allocated, wherein P is an integer and is more than or equal to 2 and less than or equal to N; in the process of selecting P, a value that minimizes the difference between N and the selected P is preferably selected.

Wherein consecutive TTIs have the same or different frequency domain resources; or consecutive TTIs correspond to the same TB or different TBs.

In a fourth aspect, an embodiment of the present invention provides a data transmission apparatus, including:

the acquisition module is used for acquiring the configuration information of the transmission mode;

a transmission module, configured to send data to be transmitted to a receiving end by using M consecutive TTIs on a same carrier when the transmission mode configuration information indicates that data transmission needs to be performed by using consecutive transmission time intervals TTI;

The obtaining module is specifically configured to obtain transmission mode configuration information sent by a network side device; or acquiring the transmission mode configuration information of the system configuration.

In a fifth aspect, an embodiment of the present invention provides a data transmission apparatus, including:

the receiving module is used for receiving data sent by the sending end;

a determining module, configured to determine whether the sending end utilizes consecutive TTIs for data transmission;

the processing module is used for merging the data transmitted by the transmitting end on the same carrier wave by using M continuous TTIs in the data if the transmitting end is determined to use the continuous TTIs for data transmission;

Wherein the determining module comprises:

the obtaining submodule is used for obtaining the transmission mode configuration information sent by the network side equipment, or obtaining the transmission mode configuration information configured by the system, or obtaining the transmission mode indication information sent by the sending end;

and a determining sub-module, configured to determine that the transmitting end performs data transmission using consecutive TTIs when the transmission mode configuration information or the transmission mode indication information indicates that the transmitting end performs data transmission using consecutive TTIs.

In a sixth aspect, an embodiment of the present invention provides a data transmission device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

acquiring transmission mode configuration information through the transceiver; under the condition that the transmission mode configuration information indicates that data transmission needs to be carried out by using continuous Transmission Time Intervals (TTI), transmitting data to be transmitted to a receiving end by using M continuous TTIs on the same carrier wave;

Wherein the processor is further configured to read the program in the memory and execute the following processes:

acquiring transmission mode configuration information sent by network side equipment; or acquiring the transmission mode configuration information of the system configuration.

under the condition that the transmission mode configuration information indicates that the target service type, the target PPPP or the target QoS must utilize continuous TTIs (transmission time intervals) for data transmission, transmitting the data to be transmitted by utilizing M continuous TTIs on the same carrier wave for the data to be transmitted of the target service type, the target PPPP or the target QoS; and/or

transmitting transmission mode indication information to a receiving end;

consecutive M TTIs are selected for data transmission.

wherein M < N;

In a seventh aspect, an embodiment of the present invention provides a data transmission device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

receiving data sent by a sending end through the transceiver; determining whether the sending end utilizes continuous TTI to carry out data transmission; if the sending end is determined to utilize continuous TTI to carry out data transmission, merging the data transmitted by M continuous TTIs on the same carrier wave by the sending end in the data; in M continuous TTIs, data mapping is carried out from the 1 st TTI to the last symbol of the M-1 th TTI, the last symbol of the M-th TTI is used as GP, M is an integer and is more than or equal to 2.

In an eighth aspect, an embodiment of the present invention provides a data transmission apparatus, including:

a selection module, configured to select a TTI to be allocated for data transmission; wherein, the selected TTIs to be allocated are continuous TTIs;

and the sending module is used for sending transmission mode configuration information to the terminal according to the selected TTI to be allocated, wherein the transmission mode configuration information indicates that continuous TTIs are required to be utilized for data transmission.

Wherein the selection module is specifically configured to,

In a ninth aspect, an embodiment of the present invention provides a data transmission device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

Wherein consecutive TTIs have the same or different frequency domain resources; or

Consecutive TTIs correspond to the same TB or different TBs.

In a tenth aspect, an embodiment of the present invention provides a computer-readable storage medium for storing a computer program, which when executed by a processor implements the steps in the method according to the first aspect; alternatively, the computer program realizes the steps in the method according to the second aspect when executed by a processor; alternatively, the computer program realizes the steps in the method according to the third aspect when executed by a processor.

The technical scheme of the embodiment of the invention has the following beneficial effects:

in the embodiment of the invention, in M continuous TTIs, data mapping is carried out on the last symbol from the 1 st TTI to the M-1 st TTI, the last symbol of the M TTI is used as GP, and the M TTIs are continuously transmitted, so that more data can be carried on one symbol, and the transmission rate of the data is improved.

Drawings

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

FIG. 2 is a flow chart of a data transmission method according to an embodiment of the present invention;

FIG. 3 is a flow chart of a data transmission method according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating simultaneous transmission of 2 consecutive TTIs according to an embodiment of the invention;

FIG. 5 is a diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 6 is a block diagram of a data transmission apparatus according to an embodiment of the present invention;

fig. 7 is a second schematic diagram of a data transmission apparatus according to an embodiment of the invention;

FIG. 8 is a diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 9 is a diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 11 is a diagram of a data transmission device according to an embodiment of the present invention;

fig. 12 is a schematic diagram of a data transmission device according to an embodiment of the present invention.

Detailed Description

The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the R14V 2X PSCCH (Physical Sidelink Shared Channel)/psch frame structure, the last symbol of a subframe serves as the GP.

As shown in fig. 1, a data transmission method according to an embodiment of the present invention is applied to a V2X terminal serving as a sending end, and includes:

step 101, obtaining transmission mode configuration information.

In the embodiment of the present invention, the sending end may obtain the transmission mode configuration information sent by the network side device, or obtain the transmission mode configuration information configured by the system.

The Transmission mode configuration information may indicate which TTIs may be continuously transmitted, which Service types (Service types), which PPPPs (ProSe Per-Packet Priority, direct communication Packet Priority), or which QoS (Quality of Service) may transmit data using continuous TTIs (Transmission Time Interval).

And 102, under the condition that the transmission mode configuration information indicates that data transmission needs to be carried out by using continuous Transmission Time Intervals (TTI), transmitting data to be transmitted to a receiving end by using M continuous TTIs on the same carrier wave.

In the embodiment of the present invention, "data transmission needs to be performed by using consecutive TTI" may have two meanings: firstly, a sending end must transmit data according to the configuration information of a transmission mode; secondly, the sending end can transmit data according to the transmission configuration information.

If the first meaning is that, that is, under the condition that the transmission mode configuration information indicates that the target service class, the target PPPP or the target QoS must use consecutive TTIs for data transmission, for the data to be transmitted of the target service class, the target PPPP or the target QoS, the transmitting end transmits the data to be transmitted on the same carrier by using M consecutive TTIs. And/or, under the condition that the transmission mode configuration information indicates that the target resource pool must use continuous TTIs for data transmission, when the target resource pool is used for data transmission, the transmitting end transmits data to be transmitted on the same carrier wave by using M continuous TTIs.

Wherein, the target service class, the target PPPP or the target QoS can be set arbitrarily.

If the second meaning is the above meaning, the sending end needs to indicate to the receiving end whether it sends according to the transmission configuration information. At this time, the sending end can send transmission mode indication information to the receiving end; the transmission mode indication information is used for indicating a target service type or a target PPPP or a target QoS or whether data transmission is carried out by continuous TTI in a target resource pool.

Specifically, the sending end may send the transmission mode indication information to the receiving end by using the target information in the Scheduling Assignment (a); and/or transmitting transmission mode indication information to a receiving end by using reserved bits in the SA; wherein the target information is information indicating a transmission capability of the V2X terminal as a transmitting end.

For example, if the reserved bit is 1, it indicates that the sending end performs data transmission according to the transmission mode configuration information; otherwise, the sending end does not transmit data according to the transmission mode configuration information.

On the basis of the above embodiment, before or after step 101, the transmitting end may further select consecutive M TTIs for data transmission. Specifically, a sending end obtains a set transmission frequency N, wherein N is an integer and is more than or equal to 2; searching for idle TTIs meeting continuous M-time transmission in the candidate resources, and taking the idle TTIs meeting the continuous M-time transmission as continuous M TTIs for data transmission;

wherein M < N; wherein the M consecutive TTIs have the same or different frequency domain resources; or the M consecutive TTIs correspond to the same TB (transport block) or different TBs for the same V2X terminal.

For example, if the number of transmission times N is 3, then, when selecting a resource from a candidate resource set satisfying the delay requirement among the candidate resources, first, whether idle resources that can be continuously transmitted for 3 times are satisfied is searched for, and if there are idle resources, the idle resources are randomly selected from the satisfied idle resource set; if there is no free resource satisfying 3 consecutive transmissions, a free resource for 2 consecutive transmissions is selected.

In the above embodiment, if the sending end itself does not select resources but utilizes resources allocated by the network side device, the resources allocated by the network side device find that, and the M consecutive TTIs have the same or different frequency domain resources; or for the same V2X terminal, the M consecutive TTIs correspond to the same transport block, TB, or different TBs; or the same TB of the same V2X terminal preferentially utilizes continuous TTI to carry out data transmission.

As shown in fig. 2, the data transmission method according to the embodiment of the present invention is applied to a V2X terminal serving as a receiving end, and includes:

step 201, receiving data sent by a sending end.

Step 202, determining whether the sending end utilizes continuous TTIs for data transmission.

Specifically, in this step, transmission mode configuration information sent by a network side device is obtained, or transmission mode configuration information configured by a system is obtained, or transmission mode indication information sent by the sending end is obtained; and determining that the transmitting end utilizes continuous TTIs for data transmission when the transmission mode configuration information or the transmission mode indication information indicates that the transmitting end utilizes continuous TTIs for data transmission.

Under the condition that the transmission mode configuration information indicates that the transmitting end utilizes continuous TTIs for data transmission, the receiving end determines that the transmitting end utilizes the continuous TTIs for data transmission under the condition that the transmission mode configuration information indicates that target service or target service category or target PPPP or target quality of service (QoS) needs to utilize the continuous TTIs for data transmission; and/or determining that the sending end utilizes continuous TTIs for data transmission under the condition that the transmission mode configuration information indicates that the target resource pool needs to utilize continuous TTIs for data transmission.

When the transmission mode indication information indicates that the transmitting end utilizes continuous TTIs for data transmission, determining that the transmitting end utilizes continuous TTIs for data transmission when target information in the SA is preset information and/or reserved bits in the SA are preset values; the target information is information used for representing the transmission capability of the sending end. The preset value is a value predetermined by the terminal and the network side device.

Or, under the condition that the sending end does not carry out any indication, the receiving end can also carry out blind detection on the received data under the condition that the time interval between information indication resources in the SA is 1; the blind detection result comprises a first blind detection result and a second blind detection result, the first blind detection result is the blind detection result when the last symbol from the 1 st TTI to the M-1 st TTI is assumed to be subjected to data mapping, and the second blind detection result is the blind detection result when the last symbol from the 1 st TTI to the M-1 st TTI is not subjected to data mapping. And then, respectively checking the first blind test result and the second blind test result. Under the condition that the first blind detection result is accurately checked, determining that the sending end utilizes continuous TTI to carry out data transmission; and under the condition that the second blind detection result is accurately checked, determining that the sending end does not utilize continuous TTI for data transmission.

Step 203, if it is determined that the sending end utilizes continuous TTIs for data transmission, merging the data transmitted by the sending end on the same carrier by using M continuous TTIs.

As shown in fig. 3, the data transmission method according to the embodiment of the present invention is applied to a network device, and includes:

301, selecting TTI to be allocated for data transmission; wherein, the selected TTIs to be allocated are continuous TTIs.

In this step, the network side device obtains a set transmission number N, wherein N is an integer and is greater than or equal to 2. Then, searching idle TTI meeting continuous P times of transmission in the candidate resources as TTI to be allocated, wherein P is an integer and is more than or equal to 2 and less than or equal to N; in the process of selecting P, a value that minimizes the difference between N and the selected P is preferably selected.

Step 302, according to the selected TTI to be allocated, transmitting transmission mode configuration information to the terminal, where the transmission mode configuration information indicates that data transmission needs to be performed using consecutive TTIs.

In an existing R14V 2X PSCCH (Physical Sidelink Shared Channel)/PSCCH frame structure, the last symbol of a subframe is used as a GP without data mapping. Considering that the system bandwidth under R16NR may be large, more data can be carried on one symbol, and NR has higher requirement for data rate, so more efficient transmission mode can be considered.

Therefore, in the embodiment of the present invention, for the same carrier, M consecutive TTIs (M is an integer and M ≧ 2) are simultaneously transmitted. In M consecutive TTIs, data mapping is performed from the 1 st TTI to the last symbol of the M-1 st TTI, and the last symbol of the M-th TTI is used as a GP. Fig. 4 shows a schematic diagram when consecutive 2 TTIs are transmitted simultaneously. When a plurality of TTIs are continuously and simultaneously transmitted, if TTIs are continuously transmitted, the time domain gap of two resources is 1.

In practical application, in a plurality of consecutive TTIs, the frequency domain resources on each TTI are not limited, and may be the same frequency domain resources or different frequency domain resources. In a plurality of continuous TTIs, the transmission attribute of each TTI is not limited, and the same or different TBs can be used for the same V2X terminal; the first transmission or the retransmission can be both performed. It is preferable to guarantee that all transmissions are continuous for the same TB for the same V2X terminal. If it is not guaranteed that all transmissions are continuous, then it may also be partial transmissions; in general, the principle is to ensure that as many times as possible a transmission continues.

In addition, in practical application, in a centralized scheduling mode, no collision can be guaranteed, and a continuous transmission mode of the embodiment of the invention can be selected as much as possible to improve the data rate. In a distributed mode, in order to avoid simultaneous collision, certain randomness is ensured as much as possible, that is, the continuous transmission mode of the embodiment of the present invention needs to be considered on the basis of certain randomness.

In the prior art, currently, R14 itself has gap 1, that is, for different transmissions of the same TB, the resource must be continuously transmitted by gap 1, but if gap 1, the resource is not necessarily continuously transmitted. Therefore, the transmitting end can indicate to the receiving end whether it utilizes consecutive TTIs for data transmission. The indication method of the transmitting end and the receiving method of the receiving end can be summarized as follows.

The method I comprises the following steps that a sending end implicitly indicates:

the sender is differentiated from the perspective of the SA user. In the prior art, the information included in the SA (Scheduling Assignment) is mainly as follows:

priority (8 kinds): 3 bits.

Resource reservation period index value: 4 bits to indicate the reservation period of the resource, that is, the resource indicated by the current SA will be used continuously in the next reservation period. The corresponding relation between the resource reservation period index value and the resource reservation period is configured by high-level signaling.

Frequency domain resource location occupied by retransmission (starting point/length): and < ═ 8 bits, which are used for indicating the frequency resources occupied by the data of initial transmission and retransmission indicated by the current SA.

Time interval of initial transmission/retransmission: 4 bits, when only one transmission is carried out, all the current bit information positions are set to be 0.

Modulation and coding: 5 bits. And (3) retransmission indication: 1 bit, indicating whether the data associated with the current SA is an initial transmission or a retransmission.

Reserved/padding bits: the information contained in 7 bits is mainly as follows:

in the embodiment of the invention, the sending end can utilize the information which indicates the transmission capability of the sending end in the SA and simultaneously indicate whether the sending end adopts a continuous transmission mode. If the information indicating the transmission capability of the transmitting end is an appointed value, the transmitting end of the specification adopts a continuous transmission mode. At this time, if the receiving end can determine whether the transmitting end is a non-R14 user by using a transmission method or the like, for example, by using a 64QAM (Quadrature Amplitude Modulation) or TxD, the receiving end can assume that the V2X terminal employs a continuous transmission method.

And in the second mode, the sending end does not indicate whether the sending end adopts a continuous sending mode.

That is, in this case, the transmitting end does not indicate whether it employs the continuous transmission mode, but the receiving end determines whether the transmitting end employs the continuous transmission mode.

For the TB with gap equal to 1, the V2X terminal performs two receiving and combining processes according to whether GP maps data. When the receiving end determines that gap is 1, it cannot determine whether GP does data mapping. Therefore, the receiving end performs blind detection processing. This time is equivalent to one TB corresponding to two HARQ (Hybrid Automatic Repeat reQuest) receiving processes, one receiving end considers that data mapping is not performed, and the other receiving end considers that data mapping is performed. Then, for the two blind detection results, the receiving end confirms which transmission mode is specifically adopted by the transmitting end through CRC (Cyclic Redundancy Check) Check and the like. If the result of not performing GP mapping is correct, determining that GP does not perform data mapping; if the result of the GP mapping is correct, the GP is determined to be data mapped.

The third method comprises the following steps: binding with a Service, or with a Service type (target ID), or with a PPPP, or with a QoS (Quality of Service) class.

That is, for a certain service, a certain service type, a certain PPPP, and a certain QoS, the sending end must or may transmit its corresponding data using consecutive TTIs through network side indication or system configuration.

In this case, if the network side instructs or the system configuration sender to transmit the corresponding data using consecutive TTIs, then the sender only needs to transmit data using consecutive TTIs according to the information of the instruction or the system configuration. That is, in this case, the transmitting end and the receiving end have agreed according to the network side indication or the configuration of the system. For the receiving end, the data transmitted on consecutive TTIs may be combined according to the network side indication or the system configuration information.

If the network side indicates or the system configures that the sender may use consecutive TTIs to transmit its corresponding data, then: (1) the sending end adopts continuous TTI to transmit corresponding data according to the network side instruction or system configuration; (2) the sending end does not adopt continuous TTI to transmit the corresponding data according to the network side instruction or the system configuration. For the first case, the processing mode is different from the above processing mode of "the network side indicates or the system configuration sender must transmit the corresponding data using consecutive TTIs". For the first case, if the sending end does not use consecutive TTIs for transmission according to the network side indication or the system configuration, the sending end further needs to indicate the receiving end to use consecutive TTIs for transmission. At this time, the receiving end combines the data transmitted in consecutive TTIs according to the further indication sent.

The method is as follows: from a resource pool perspective.

In a specific application, different resource pools may use different transmission mechanisms, some resource pools allow TTI continuous transmission, and some resource pools do not allow TTI continuous transmission. Then, whether a certain resource pool allows TTI to be continuously transmitted or not may be determined by means of pre-configuration or SIB (System Information Block) 21 or System fixed configuration. For example, if the sender shares a resource pool with the R14 user, then continuous sending is not considered; continuous transmission may be considered if the resource pool is not shared with R14 users. In this way, the receiving end can determine whether data mapping is performed under the condition that gap is 1 according to the corresponding receiving resource pool.

The fifth mode is as follows: and displaying the indication.

In this manner, the transmitting end uses the reserved bit indication in the SA. For example, if the reserved bit is 1, the receiving end may consider that the transmitting end employs consecutive TTIs for transmission, otherwise, it may consider that the transmitting end does not employ consecutive TTIs for transmission. The consecutive transmission here may be of the same TB or of resources of different TBs.

Of course, the above is only an example of several possible indication ways, and in practical application, the above is not limited by the above way.

Hereinafter, the resource allocation method in the embodiment of the present invention will be described in conjunction with different application scenarios.

The application scene one: centralized allocation & same TB initial transmission \ retransmission.

In the centralized allocation manner of the base station, no matter whether the V2X vehicle is in unicast, multicast or broadcast service, when allocating resources for a certain TB, it may be considered to allocate consecutive TTIs for initial transmission and retransmission of the TB.

Considering the existence of the zoning and non-logical subframes and the existence of some reserved resources under SPS (Semi-Persistent Scheduling) resource allocation, it is sometimes not guaranteed that the initial transmission and all retransmissions are continuous, but such resources may be allocated as preferentially as possible.

For example, in practical applications, it is sufficient to ensure that all or part of the transmissions are in consecutive TTIs. For example, the following allocation methods can be guaranteed: (1) initial transmission + retransmission + xxxxx + retransmission; (2) primary transmission and retransmission; (3) initial transmission + retransmission; (4) initial transmission + xxxxx + retransmission. The first mode and the second mode are used for continuously sending the initial transmission and the first retransmission; in the third mode, initial transmission and all retransmission are continuously transmitted; the fourth way is that two retransmissions are sent consecutively. Here xxxxx represents TTI resources not allocated in the middle for transmitting the TB; from a frequency domain perspective, the frequency domain resources that may be the same may be different frequency domain resources.

The base station may allocate a DCI (Downlink Control Information) of resources to the V2X terminal to indicate corresponding resources, and the PC5V2X terminal only needs to indicate the resources, and whether the GP maps data when the gap is 1 is related to a specific indication method. For example, if it is related to a service, a mapping of data is made with gap ═ 1.

The centralized base station allocation can be equivalently replaced by allocating resources to members in the fleet through the head vehicle in the fleet.

Application scenario two: centralized allocation & different TBs.

Under the centralized distribution mode of the base station, no matter whether the V2X vehicle is a unicast, multicast or broadcast service, the base station distribution cannot meet the transmission requirement that a Buffer Status Report (BSR) reports a logical channel Buffer; or when the same MAC (Media Access Control) PDU (Protocol Data Unit) cannot be multiplexed, for example, the target IDs are different, the service size is limited, or the resource triggering conditions are different, so that these services cannot be multiplexed. For different TBs, allocation on different slot resources may be considered, for example, consecutive slot resources may be considered, that is, consecutive TTI transmissions are allocated for different TBs.

Assuming 2 TBs, 2 TBs are allocated with initial transmission resources: initial transmission 1+ initial transmission 2.

Considering retransmission, similarly to the first application scenario, considering the existence of the zoning and non-logical subframes and the existence of some reserved resources under SPS resource allocation, it may not be guaranteed that the initial transmission and all retransmissions are continuous, but such resources may be allocated as preferentially as possible.

Application scenario three: distributed & same carrier different TBs.

When the vehicle needs to select 2 resources, for example, the vehicle cannot be multiplexed in the same MAC PDU (for example, conditions such as different target IDs, traffic size limitation, or different resource triggering conditions). In this case, the selection may be performed simultaneously or may be performed at different times, but there are grants that have not yet been transmitted by the group packets.

For example, there is service 1 in the current cache, the corresponding resource is the 5 th TTI of the initial transmission resource, and the 10 th TTI of the retransmission resource (the initial transmission and the retransmission of the same TB are not restricted, and in the existing implementation, in this way, gap is 1, which is not actively selected, and has a small probability); if a new service comes, resource selection needs to be triggered, and priority selection processing can be added on the basis of ensuring randomness.

For example, it is ensured that one of the resources and the previous resource can be continuously transmitted as much as possible, for example, if 2 resources are selected, the 4 th TTI, the 6 th TTI, the 9 th TTI and the 11 th TTI are preferably selected in one selection, and the other selection ensures randomness according to the existing implementation.

And an application scene four: the angle of resource selection.

Whether the resources are distributed in a centralized manner and the same TB initial transmission/retransmission or distributed in a centralized manner and different TBs, the resources with continuous initial transmission and retransmission resources are selected as far as possible when the resources are selected from the candidate resource set from the aspect of resource selection.

For example, when determining that the transmission times is 3, when the base station allocates resources, and selects resources from a candidate resource set satisfying the delay requirement, first, whether idle resources which can be continuously transmitted for 3 times can be found, and if any, the idle resources are randomly selected from the satisfied idle resource set; if there is no free resource satisfying 3 consecutive transmissions, a free resource for 2 consecutive transmissions is selected. Specifically, the initial transmission and the first retransmission are continuous, or two retransmissions are continuous.

As shown in fig. 5, the data transmission apparatus according to the embodiment of the present invention includes:

an obtaining module 501, configured to obtain configuration information of a transmission mode; a transmission module 502, configured to send data to be transmitted to a receiving end by using M consecutive TTIs on the same carrier when the transmission mode configuration information indicates that data transmission needs to be performed by using consecutive transmission time intervals TTI; in M continuous TTIs, data mapping is carried out from the 1 st TTI to the last symbol of the M-1 th TTI, the last symbol of the M-th TTI is used as GP, M is an integer and is more than or equal to 2.

The obtaining module 501 is specifically configured to obtain transmission mode configuration information sent by a network side device; or acquiring the transmission mode configuration information of the system configuration.

The transmission module 502 is specifically configured to:

under the condition that the transmission mode configuration information indicates that the target service type, the target PPPP or the target QoS must utilize continuous TTIs (transmission time intervals) for data transmission, transmitting the data to be transmitted by utilizing M continuous TTIs on the same carrier wave for the data to be transmitted of the target service type, the target PPPP or the target QoS; and/or under the condition that the transmission mode configuration information indicates that the target resource pool has to use continuous TTIs for data transmission, when the target resource pool is used for data transmission, sending data to be transmitted by using M continuous TTIs on the same carrier wave.

As shown in fig. 6, the apparatus may further include: a sending module 503, configured to send transmission mode indication information to a receiving end; the transmission mode indication information is used for indicating a target service type or a target PPPP or a target QoS or whether data transmission is carried out by continuous TTI in a target resource pool. Specifically, the sending module 503 sends the transmission mode indication information to the receiving end by using the target information in the SA; and/or transmitting transmission mode indication information to a receiving end by using reserved bits in the SA; wherein the target information is information indicating a transmission capability of the V2X terminal as a transmitting end.

If the resource is allocated by the network side equipment, the M continuous TTIs in the resource allocated by the network side equipment have the same or different frequency domain resources; or for the same V2X terminal, the M consecutive TTIs correspond to the same transport block, TB, or different TBs; or the same TB of the same V2X terminal preferentially utilizes continuous TTI to carry out data transmission.

As shown in fig. 7, the apparatus may further include: a selecting module 504 for selecting consecutive M TTIs for data transmission. Specifically, the selecting module 504 is configured to: acquiring a set transmission frequency N, wherein N is an integer and is more than or equal to 2; searching for idle TTIs meeting continuous M-time transmission in the candidate resources, and taking the idle TTIs meeting the continuous M-time transmission as continuous M TTIs for data transmission; wherein M < N; wherein the M consecutive TTIs have the same or different frequency domain resources; or the M consecutive TTIs correspond to the same transport block, TB, or different TBs for the same V2X terminal.

The working principle of the device according to the invention can be referred to the description of the method embodiment described above.

As shown in fig. 8, the data transmission apparatus according to the embodiment of the present invention includes:

a receiving module 801, configured to receive data sent by a sending end; a determining module 802, configured to determine whether the sending end utilizes consecutive TTIs for data transmission; a processing module 803, configured to, if it is determined that the sending end utilizes consecutive TTIs for data transmission, perform merging processing on data transmitted by M consecutive TTIs on the same carrier by the sending end in the data; in M continuous TTIs, data mapping is carried out from the 1 st TTI to the last symbol of the M-1 th TTI, the last symbol of the M-th TTI is used as GP, M is an integer and is more than or equal to 2.

Wherein the determining module 802 comprises: the obtaining submodule is used for obtaining the transmission mode configuration information sent by the network side equipment, or obtaining the transmission mode configuration information configured by the system, or obtaining the transmission mode indication information sent by the sending end; and a determining sub-module, configured to determine that the transmitting end performs data transmission using consecutive TTIs when the transmission mode configuration information or the transmission mode indication information indicates that the transmitting end performs data transmission using consecutive TTIs.

The determining sub-module is specifically configured to determine that the sender utilizes continuous TTIs for data transmission when the transmission mode configuration information indicates that the sender utilizes continuous TTIs for data transmission and when the transmission mode configuration information indicates that the target service or the target service category or the target PPPP or the target QoS requires to utilize continuous TTIs for data transmission; and/or determining that the sending end utilizes continuous TTIs for data transmission under the condition that the transmission mode configuration information indicates that the target resource pool needs to utilize continuous TTIs for data transmission.

The determining submodule is specifically configured to, when the transmission mode indication information indicates that the transmitting end utilizes continuous TTIs for data transmission, determine that the transmitting end utilizes continuous TTIs for data transmission when target information in an SA is preset information and/or reserved bits in the SA are preset values; the target information is information used for representing the transmission capability of the sending end.

Wherein the determining module 802 comprises:

the detection submodule is used for carrying out blind detection on the received data under the condition that the information in the SA indicates that the time interval between resources is 1; the blind detection result comprises a first blind detection result and a second blind detection result, the first blind detection result is the blind detection result when the last symbol from the 1 st TTI to the M-1 st TTI is assumed to be subjected to data mapping, and the second blind detection result is the blind detection result when the last symbol from the 1 st TTI to the M-1 st TTI is not subjected to data mapping; the verification submodule is used for respectively verifying the first blind test result and the second blind test result; the determining submodule is used for determining that the sending end utilizes continuous TTI to carry out data transmission under the condition that the first blind detection result is accurately checked; and under the condition that the second blind detection result is accurately checked, determining that the sending end does not utilize continuous TTI for data transmission.

As shown in fig. 9, the data transmission apparatus according to the embodiment of the present invention includes:

a selecting module 901, configured to select a TTI to be allocated for data transmission; wherein, the selected TTIs to be allocated are continuous TTIs; a sending module 902, configured to send transmission mode configuration information to the terminal according to the selected TTI to be allocated, where the transmission mode configuration information indicates that data transmission needs to be performed using consecutive TTIs.

The selection module 901 is specifically configured to obtain a set transmission time N, where N is an integer and N is greater than or equal to 2; in the candidate resources, searching idle TTI meeting continuous P times of transmission as TTI to be allocated, wherein P is an integer and is more than or equal to 2 and less than or equal to N; in the process of selecting P, a value that minimizes the difference between N and the selected P is preferably selected.

As shown in fig. 10, the data transmission device according to the embodiment of the present invention includes:

the processor 1000, which is used to read the program in the memory 1020, executes the following processes: selecting TTIs to be allocated for data transmission; wherein, the selected TTIs to be allocated are continuous TTIs; and according to the selected TTI to be allocated, transmitting transmission mode configuration information to the terminal through the transceiver 1010, wherein the transmission mode configuration information indicates that continuous TTIs are required to be used for data transmission.

A transceiver 1010 for receiving and transmitting data under the control of the processor 1000.

Where in fig. 10, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 1000 and memory represented by memory 1020. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1010 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1000 in performing operations.

The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1000 in performing operations.

The processor 1000 is further configured to read the computer program and execute the following steps:

As shown in fig. 11, the data transmission device according to the embodiment of the present invention includes:

the processor 1100, which reads the program in the memory 1120, performs the following processes:

acquiring configuration information of a transmission mode; when the transmission mode configuration information indicates that data transmission needs to be performed by using consecutive transmission time intervals TTI, transmitting data to be transmitted to a receiving end by using M consecutive TTIs on the same carrier through the transceiver 1110; in M continuous TTIs, data mapping is carried out from the 1 st TTI to the last symbol of the M-1 th TTI, the last symbol of the M-th TTI is used as GP, M is an integer and is more than or equal to 2. A transceiver 1110 for receiving and transmitting data under the control of the processor 1100.

A transceiver 1110 for receiving and transmitting data under the control of the processor 1100.

Where in fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1100, and various circuits, represented by memory 1120, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1110 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 1130 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 in performing operations.

The processor 1100 is also adapted to read the computer program and perform the following steps:

transmitting transmission mode indication information to a receiving end;

consecutive M TTIs are selected for data transmission.

wherein M < N;

As shown in fig. 12, the data transmission device according to the embodiment of the present invention includes:

a processor 1200 for reading the program in the memory 1220 and executing the following processes:

receiving data transmitted by a transmitting end through the transceiver 1210; determining whether the sending end utilizes continuous TTI to carry out data transmission; if the sending end is determined to utilize continuous TTI to carry out data transmission, merging the data transmitted by M continuous TTIs on the same carrier wave by the sending end in the data; in M continuous TTIs, data mapping is carried out from the 1 st TTI to the last symbol of the M-1 th TTI, the last symbol of the M-th TTI is used as GP, M is an integer and is more than or equal to 2.

A transceiver 1210 for receiving and transmitting data under the control of the processor 1200.

Where in fig. 12, the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors represented by processor 1200 and memory represented by memory 1220 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1210 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 1230 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1200 in performing operations.

The processor 1200 is further configured to read the computer program and execute the following steps:

Furthermore, a computer-readable storage medium of an embodiment of the present invention stores a computer program executable by a processor to implement:

acquiring configuration information of a transmission mode;

Wherein the acquiring the transmission mode configuration information includes:

transmitting transmission mode indication information to a receiving end;

consecutive M TTIs are selected for data transmission.

Wherein the selecting consecutive M TTIs for data transmission comprises:

wherein M < N;

receiving data sent by a sending end;

Wherein the selecting the TTI to be allocated for data transmission comprises:

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A data transmission method, applied to a V2X terminal as a transmitting end, comprising:

acquiring configuration information of a transmission mode;

in M continuous TTIs, data mapping is carried out from the 1 st TTI to the last symbol of the M-1 th TTI, the last symbol of the M-th TTI is used as GP, M is an integer and is more than or equal to 2;

in a case that the transmission mode configuration information indicates that a target service class, a target PPPP, or a target QoS may utilize consecutive TTIs for data transmission, the method further includes:

transmitting transmission mode indication information to a receiving end;

the transmission mode indication information is used for indicating the target PPPP or the target QoS or whether the continuous TTI is utilized in the target resource pool for data transmission;

the sending of the transmission mode indication information to the receiving end includes:

the target information is information used for representing the transmission capability of a V2X terminal as a transmitting end;

wherein the M consecutive TTIs have different frequency domain resources; or

2. The method of claim 1, wherein the obtaining the transmission mode configuration information comprises:

3. The method of claim 1, wherein the sending data to be transmitted to a receiving end by using M consecutive TTIs on the same carrier comprises:

4. The method according to any of claims 1-3, wherein before or after said obtaining the transmission mode configuration information, the method further comprises:

consecutive M TTIs are selected for data transmission.

5. The method of claim 4, wherein selecting consecutive M TTIs for data transmission comprises:

wherein M < N;

6. A data transmission method, applied to V2X as a receiving end, comprising:

receiving data sent by a sending end;

the determining whether the sending end utilizes continuous TTIs for data transmission includes:

acquiring transmission mode indication information sent by the sending end;

determining that the transmitting end utilizes continuous TTIs for data transmission under the condition that the transmission mode indication information indicates that the transmitting end utilizes continuous TTIs for data transmission;

when the transmission mode indication information indicates that the transmitting end utilizes continuous TTIs for data transmission, determining that the transmitting end utilizes continuous TTIs for data transmission includes:

the target information is information used for expressing the transmission capability of a sending end;

wherein the M consecutive TTIs have different frequency domain resources; or

7. The method of claim 6, wherein the determining whether the sender utilizes consecutive TTIs for data transmission comprises:

acquiring transmission mode configuration information sent by network side equipment, or acquiring transmission mode configuration information configured by a system;

and determining that the transmitting end utilizes continuous TTI to perform data transmission under the condition that the transmission mode configuration information indicates that the transmitting end utilizes continuous TTI to perform data transmission.

8. The method of claim 7, wherein determining that the transmitter performs data transmission using consecutive TTIs when the transmission scheme configuration information indicates that the transmitter performs data transmission using consecutive TTIs comprises:

9. The method of claim 6, wherein the determining whether the sender utilizes consecutive TTIs for data transmission comprises:

10. A data transmission method is applied to network side equipment and comprises the following steps:

according to the selected TTI to be allocated, transmitting transmission mode configuration information to the terminal, wherein the transmission mode configuration information indicates that continuous TTIs are required to be utilized for data transmission;

the selecting a TTI to be allocated for data transmission comprises:

in the candidate resources, searching idle TTI meeting continuous P times of transmission as TTI to be allocated, wherein P is an integer and is more than or equal to 2 and less than or equal to N; in the process of selecting P, a value which enables the difference value between N and the selected P to be minimum is preferentially selected;

wherein consecutive TTIs have different frequency domain resources; or

Consecutive TTIs correspond to the same TB or different TBs.

11. A data transmission apparatus, comprising:

the device further comprises: the sending module is used for sending the transmission mode indication information to the receiving end; the transmission mode indication information is used for indicating the target PPPP or the target QoS or whether the continuous TTI is utilized in the target resource pool for data transmission;

the sending module is specifically configured to send transmission mode indication information to a receiving end by using target information in the SA; and/or transmitting transmission mode indication information to a receiving end by using reserved bits in the SA; the target information is information used for representing the transmission capability of a V2X terminal as a transmitting end;

wherein the M consecutive TTIs have different frequency domain resources; or

12. The apparatus according to claim 11, wherein the obtaining module is specifically configured to obtain transmission scheme configuration information sent by a network side device; or acquiring the transmission mode configuration information of the system configuration.

13. A data transmission apparatus, comprising:

the receiving module is used for receiving data sent by the sending end;

wherein the determining module comprises: the obtaining submodule is used for obtaining the transmission mode indication information sent by the sending end; a determining sub-module, configured to determine that the transmitting end performs data transmission using consecutive TTIs when the transmission mode indication information indicates that the transmitting end performs data transmission using consecutive TTIs;

the determining submodule is specifically configured to, when the transmission mode indication information indicates that the transmitting end utilizes continuous TTIs for data transmission, determine that the transmitting end utilizes continuous TTIs for data transmission when target information in an SA is preset information and/or reserved bits in the SA are preset values; the target information is information used for expressing the transmission capability of a sending end;

wherein the M consecutive TTIs have different frequency domain resources; or

14. The apparatus of claim 13, wherein the determining module comprises:

15. A data transmission device comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

the processor is also used for reading the program in the memory and executing the following processes:

transmitting transmission mode indication information to a receiving end;

wherein the M consecutive TTIs have different frequency domain resources; or

16. The apparatus of claim 15, wherein the processor is further configured to read a program in the memory and perform the following:

17. The apparatus of claim 15, wherein the processor is further configured to read a program in the memory and perform the following:

18. The apparatus according to any of claims 15-17, wherein the processor is further configured to read a program in the memory and perform the following process:

consecutive M TTIs are selected for data transmission.

19. The apparatus of claim 18, wherein the processor is further configured to read a program in the memory and perform the following:

wherein M < N;

20. A data transmission device comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

receiving data sent by a sending end through the transceiver; determining whether the sending end utilizes continuous TTI to carry out data transmission; if the sending end is determined to utilize continuous TTI to carry out data transmission, merging the data transmitted by M continuous TTIs on the same carrier wave by the sending end in the data; in M continuous TTIs, data mapping is carried out from the 1 st TTI to the last symbol of the M-1 th TTI, the last symbol of the M-th TTI is used as GP, M is an integer and is more than or equal to 2;

the processor is also used for reading the program in the memory and executing the following processes: acquiring transmission mode indication information sent by the sending end;

wherein the M consecutive TTIs have different frequency domain resources; or

21. The apparatus of claim 20, wherein the processor is further configured to read a program in the memory and perform the following:

22. The apparatus of claim 21, wherein the processor is further configured to read a program in the memory and perform the following:

23. The apparatus of claim 22, wherein the processor is further configured to read a program in the memory and perform the following:

24. A data transmission apparatus, comprising:

a sending module, configured to send transmission mode configuration information to a terminal according to the selected TTI to be allocated, where the transmission mode configuration information indicates that data transmission needs to be performed using consecutive TTIs; the selection module is specifically configured to select,

wherein consecutive TTIs have different frequency domain resources; or

Consecutive TTIs correspond to the same TB or different TBs.

25. A data transmission device comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor; the processor is used for reading the program in the memory and executing the following processes:

wherein consecutive TTIs have different frequency domain resources; or

Consecutive TTIs correspond to the same TB or different TBs.

26. A computer-readable storage medium for storing a computer program, wherein the computer program, when executed by a processor, implements the steps in the method according to any one of claims 1 to 6; or, the computer program when executed by a processor implementing the steps in the method according to any of claims 7 to 10; alternatively, the computer program realizes the steps in the method according to any one of claims 11 to 12 when executed by a processor.