CN108633087B - Data transmission method, access network equipment and terminal equipment - Google Patents

Abstract

The present application provides a data transmission method, an access network device, and a terminal device. In the method, the access network device first determines at least one first transmission time unit in a plurality of first transmission time units included in a subframe. The determined first transmission time unit is used to schedule the first terminal device to perform data transmission, and secondly, the access network device sends first scheduling information to the first terminal device, where the first scheduling information is used to indicate the determined first terminal device. A transmission time unit. Wherein, the subframe includes multiple OFDM symbols, and the first transmission time unit is formed by at least two OFDM symbols among the multiple OFDM symbols. In the method provided by the present application, by determining a reasonable first transmission time unit, when two wireless access technologies coexist, the OFDM symbols in the subframe can be used for data transmission, thereby avoiding resource waste.

Description

Data transmission method, access network equipment and terminal equipment

technical field

The present application relates to communication technologies, and in particular, to a data transmission method, access network equipment and terminal equipment.

Background technique

In a Long Term Evolution (Long Term Evolution, LTE) system, a short transmission time interval (Short-Transmission Time Interva, short-TTI) is used as a possible minimum scheduling unit, wherein a TTI is divided into multiple short-TTI, forming a fixed short-TTI pattern. In 5G New Radio (NR), a mini-slot (mini-slot) is defined as the smallest possible scheduling unit, in which a mini-slot can be used from any OFDM technology of a time slot ( Orthogonal Frequency Division Multiplexing, OFDM) symbol starts and ends at any OFDM symbol in a slot.

When LTE and NR coexist, when NR resource scheduling is performed according to mini-slot, any OFDM symbol in a time slot can be used. Since the LTE short-TTI pattern is fixed, it may appear after the mini-slot resource scheduling. Some of the remaining resources in the time slot cannot be used for LTE short-TTI scheduling, so that some resources cannot be used, resulting in a waste of resources.

SUMMARY OF THE INVENTION

The present application provides a data transmission method, access network equipment and terminal equipment, which are used to solve the problem of resource waste in the prior art.

A first aspect of the present application provides a data transmission method. In the method, an access network device first determines at least one first transmission time unit among multiple first transmission time units included in a subframe, and the determined first transmission time unit The time unit is used to schedule the first terminal device to perform data transmission, and secondly, the access network device sends first scheduling information to the first terminal device, where the first scheduling information is used to indicate the determined first transmission time unit.

Wherein, the subframe includes a plurality of orthogonal frequency division multiplexing technology OFDM symbols, and the first transmission time unit is formed by at least two OFDM symbols in the plurality of OFDM symbols.

In an optional manner, the subframe is divided into the plurality of first transmission time units according to a first division manner, and the subframe is further divided into a plurality of second transmission time units according to a second division manner unit, the first division manner is different from the second division manner;

The method also includes:

The access network device determines at least one second transmission time unit among the plurality of second transmission time units included in the subframe, and the determined second transmission time unit is used to schedule the second terminal device to perform data transmission; and

sending, by the access network device, second scheduling information to the second terminal device, where the second scheduling information is used to indicate the determined second transmission time unit;

Wherein, the second transmission time unit is composed of at least two OFDM symbols among the plurality of OFDM symbols, and for each first transmission time unit and at least one second transmission time unit, symbols are continuous or only separated by a preset symbol.

In an optional manner, the preset symbol is the 5th, 8th or 12th OFDM symbol in the subframe; or,

The preset symbol is the 5th, 8th, 9th or 12th OFDM symbol in the subframe.

In an optional manner, the OFDM symbols occupied by the multiple first transmission time units included in the subframe are known to the first terminal device; or,

The access network device sends indication information to the first terminal device, where the indication information is used to indicate OFDM symbols occupied by multiple first transmission time units included in the subframe.

In an optional manner, the radio access technology RAT used by the first terminal device and the second terminal device are different.

In an optional manner, the access network device uses a first frequency domain resource to perform data transmission with the first terminal device in the determined first transmission time unit, and the first frequency domain resource is different Frequency domain resources shared by RATs.

A second aspect of the present application provides a data transmission method. In the method, a terminal device receives first scheduling information sent by an access network device, where the first scheduling information is used to indicate a first transmission time unit, and the indicated first The transmission time unit is at least one first transmission time unit among the multiple first transmission time units included in the subframe, and the indicated first transmission time unit is used for scheduling the terminal device to perform data transmission.

The terminal device performs data transmission with the access network device on the indicated first transmission time unit.

Wherein, the subframe includes a plurality of orthogonal frequency division multiplexing technology OFDM symbols, and the first transmission time unit is formed by at least two OFDM symbols in the plurality of OFDM symbols.

In an optional manner, the OFDM symbols occupied by the multiple first transmission time units included in the subframe are known to the terminal device; or,

The terminal device receives the indication information sent by the access network device, where the indication information is used to indicate the OFDM symbols occupied by the multiple first transmission time units included in the subframe.

In an optional manner, the data transmission performed by the terminal device with the access network device in the indicated first transmission time unit includes:

The terminal device performs data transmission with the access network device on the indicated first transmission time unit using a first frequency domain resource, where the first frequency domain resource is a frequency domain resource shared by different RATs.

For the first aspect and the second aspect, in an optional manner, at least one first transmission time unit in the plurality of first transmission time units is formed by a plurality of discontinuous symbols in the subframe .

In an optional manner, if the subframe is configured as a regular cyclic prefix CP, each of the first transmission time units does not include the 5th, 8th and 12th OFDM in the subframe symbol, or each of the first transmission time unit does not include the 5th, 8th, 9th and 12th OFDM symbols in the subframe, or each of the first transmission time unit does not include the subframe The 2nd, 5th, 8th, 9th and 12th OFDM symbols in the frame;

and / or,

If the subframe is configured as an extended CP, each of the first transmission time units does not include the 4th, 7th and 10th OFDM symbols in the subframe, or each of the first transmissions The time unit does not include the 4th, 7th, 8th, and 10th OFDM symbols in the subframe, or each of the first transmission time units does not include the 2nd, 4th, and 10th OFDM symbols in the subframe 7. The 8th and 10th OFDM symbols.

In an optional manner, if the subframe is configured as a regular CP, the multiple first transmission time units included in the subframe include at least one of the following:

a first transmission time unit consisting of the third and fourth OFDM symbols in the subframe;

a first transmission time unit consisting of the sixth and seventh OFDM symbols in the subframe;

a first transmission time unit formed by the 9th, 10th and 11th OFDM symbols in the subframe;

a first transmission time unit formed by the 13th and 14th OFDM symbols in the subframe;

a first transmission time unit formed by the 3rd, 4th, 6th and 7th OFDM symbols in the subframe;

a first transmission time unit formed by the 3rd, 4th, 6th, 7th and 9th OFDM symbols in the subframe;

a first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe;

a first transmission time unit formed by the 9th, 10th, 11th, 13th and 14th OFDM symbols in the subframe;

a first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe

a first transmission time unit formed by the 4th, 6th, 7th and 9th OFDM symbols in the subframe;

a first transmission time unit formed by the ninth and tenth OFDM symbols in the subframe;

a first transmission time unit formed by the 11th, 13th and 14th OFDM symbols in the subframe;

a first transmission time unit formed by the 10th, 11th, 13th and 14th OFDM symbols in the subframe;

and / or,

If the subframe is configured as an extended CP, the multiple first transmission time units included in the subframe include at least one of the following:

a first transmission time unit formed by the 3rd, 5th and 6th OFDM symbols in the subframe;

a first transmission time unit formed by the eighth and ninth OFDM symbols in the subframe;

a first transmission time unit formed by the 11th and 12th OFDM symbols in the subframe;

a first transmission time unit formed by the third and fifth OFDM symbols in the subframe;

a first transmission time unit formed by the sixth, eighth and ninth OFDM symbols in the subframe;

a first transmission time unit formed by the fifth and sixth OFDM symbols in the subframe;

a first transmission time unit formed by the 8th, 9th, 11th and 12th OFDM symbols in the subframe;

a first transmission time unit formed by the second and third OFDM symbols in the subframe;

a first transmission time unit formed by the 2nd, 3rd, 5th and 6th OFDM symbols in the subframe;

a first transmission time unit formed by the 5th, 6th, 8th and 9th OFDM symbols in the subframe;

A first transmission time unit formed by the 9th, 11th, and 12th OFDM symbols in the subframe.

In an optional manner, the above-mentioned first transmission time unit is a mini-slot.

A third aspect of the present application provides an access network device, the access network device having the function of implementing the access network device in the above method design. These functions can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the access network device may include a processor and a transceiver, and the processor and the transceiver may perform corresponding functions in the above method, for example, a processor for multiple At least one first transmission time unit is determined in the first transmission time unit, and the determined first transmission time unit is used to schedule the first terminal device to perform data transmission; the transceiver is used to send the first schedule to the first terminal device information, where the first scheduling information is used to indicate the determined first transmission time unit.

A fourth aspect of the present invention provides a terminal device, and the terminal device has the function of implementing the first terminal device in the above method design. These functions can be implemented by hardware or by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the terminal device may include a transceiver and a processor, and the transceiver and the processor may perform corresponding functions in the foregoing method, for example: a transceiver for receiving the first schedule sent by the access network device information, the first scheduling information is used to indicate the first transmission time unit, the indicated first transmission time unit is at least one first transmission time unit in the multiple first transmission time units included in the subframe, and the indicated first transmission time unit The first transmission time unit is used to schedule the terminal equipment to perform data transmission; the processor is used to perform data transmission with the access network equipment on the indicated first transmission time unit.

A fifth aspect of the present application provides an access network device, the access network device includes a memory and a processor, the memory is used for storing program instructions, and the processor is used for calling the program instructions in the memory, so as to realize the above-mentioned first Methods in an aspect and various embodiments thereof.

A sixth aspect of the present application provides a terminal device, the terminal device includes a memory and a processor, the memory is used for storing program instructions, and the processor is used for calling the program instructions in the memory, so as to implement the above-mentioned second aspect and the same. The method in each embodiment.

In the method provided by the present application, by determining a reasonable first transmission time unit, when two wireless access technologies coexist, the OFDM symbols in the subframe can be used for data transmission, thereby avoiding resource waste.

Description of drawings

1 is a schematic diagram of a short-TTI pattern in a subframe;

FIG. 2 is a schematic diagram of another short-TTI pattern in a subframe;

3 is an example diagram of scheduling LTE terminal equipment and 5G terminal equipment on a subframe;

FIG. 4 is an interactive flowchart of Embodiment 1 of the data transmission method provided by the present application;

5-40 are schematic diagrams of patterns formed by the first transmission time unit respectively;

FIG. 41 is a module structure diagram of Embodiment 1 of an access network device provided by this application;

FIG. 42 is a module structure diagram of Embodiment 1 of a terminal device provided by this application;

FIG. 43 is an entity block diagram of Embodiment 1 of an access network device according to an embodiment of the present invention;

FIG. 44 is an entity block diagram of Embodiment 1 of a terminal device according to an embodiment of the present invention.

Detailed ways

It should be understood that the term "and/or" used in this document is only an association relationship to describe the associated objects, indicating that there may be three kinds of relationships, for example, A and/or B, which may indicate that A exists alone, and A and B exist at the same time. B, there are three cases of B alone. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

The access network device in this application may be a base station, and the terminal device may be a mobile phone that performs data interaction with the base station, or the like.

The short-TTI is the smallest scheduling unit in LTE, and the short-TTI in one subframe has a fixed pattern. Specifically, when the Physical Downlink Control Channel (PDCCH) occupies 2 OFDM symbols, the pattern of the short-TTI in one subframe is shown in Figure 1; when the PDCCH occupies 3 OFDM symbols, one subframe The pattern of short-TTI in a frame is shown in Figure 2.

When LTE and 5G coexist, the access network equipment may schedule both LTE terminal equipment and 5G terminal equipment in one subframe. 5G uses mini-slot as the minimum scheduling unit, and the starting position and length of mini-slot may not be fixed. This may result in wasted resources. Exemplarily, FIG. 3 is an example diagram of scheduling LTE terminal equipment and 5G terminal equipment on one subframe. As shown in FIG. 3 , the subframe is a regular cyclic prefix (Cyclic Prefix, CP), and the first and second subframes are symbols are PDCCH channels, and it is assumed that the access network equipment schedules 5G terminal equipment on the 3rd, 4th and 6th OFDM symbols of the subframe, and the LTE terminal equipment needs to be scheduled next. The starting position of the short-TTI is the 8th OFDM symbol, so the access network equipment can only schedule LTE terminal equipment from the 8th OFDM symbol, and the 7th OFDM symbol cannot be used for data transmission, resulting in a waste of resources.

Based on the above problems, the present application proposes a data transmission method. By defining the position and length of the mini-slot in the subframe, when LTE and 5G coexist, the OFDM symbols in the subframe can be used for data transmission to avoid resource waste. .

FIG. 4 is an interactive flowchart of Embodiment 1 of the data transmission method provided by the present application. As shown in FIG. 4 , the process includes:

S401. The access network device determines at least one first transmission time unit from the multiple first transmission time units included in the subframe.

The first transmission time unit determined by the access network device is used to schedule the first terminal device to perform data transmission. The first terminal device performs data transmission, which may be the first terminal device sending data to the access network device, or the terminal device receiving data from the access network device.

S402: The access network device sends first scheduling information to the first terminal device, where the first scheduling information is used to indicate the determined first transmission time unit.

S403: The first terminal device performs data transmission with the access network device in the indicated first transmission time unit according to the first scheduling information.

Specifically, the first transmission time unit is a time domain resource, and the first transmission time unit may correspond to multiple frequency domain resources in the frequency domain, that is, multiple subcarriers. When the access network device determines the first time to schedule the first terminal device After the time unit is transmitted, a first frequency domain resource is further selected from a plurality of frequency domain resources corresponding to the first transmission time unit for data transmission.

Correspondingly, the first terminal device also uses the above-mentioned first frequency domain resource to perform data transmission with the access network device on the indicated first transmission time unit.

The above-mentioned first frequency domain resource is a frequency domain resource shared by different radio access technologies (Radio Access Technology, RAT).

Optionally, the above-mentioned first time unit may be a mini-slot.

The OFDM symbols occupied by the multiple first transmission time units included in the subframe may be pre-configured on the access network device and the first terminal device, that is, the multiple first transmission time units included in the subframe may be configured in advance. The occupied OFDM symbols are known to both the access network device and the first terminal device. For example, when the first time unit is a mini-slot, the access network device and the first terminal device can pre-configure which mini-slots the subframe can include, and then, as described in step S401, the access network device can At least one of these mini-slots is selected to send data to the first terminal device, and the first terminal device is notified of the selected mini-slot to access the network device through the scheduling information, and the first terminal device uses the corresponding mini-slot according to the scheduling information. to receive data.

Alternatively, the OFDM symbols occupied by the multiple first transmission time units included in the subframe may be notified by the access network device to the first terminal device through indication information, that is, before the above step S401, the access network device may notify the first terminal device The device sends a notification message, where the notification message carries the OFDM symbols occupied by the multiple first transmission time units included in the subframe.

The subframe includes multiple OFDM symbols, and the first transmission time unit is composed of at least two OFDM symbols in the multiple OFDM symbols. In different subframe structures, the first transmission time unit may correspond to a specific OFDM in the subframe symbol.

Optionally, if the subframe is configured as a conventional CP, each first transmission time unit does not include the 5th, 8th, and 12th OFDM symbols in the subframe, or each first transmission time unit does not include a subframe. the 5th, 8th, 9th and 12th OFDM symbols in the frame, or each first transmission time unit does not include the 2nd, 5th, 8th, 9th and 12th OFDM symbols in the subframe;

and / or,

If the subframe is configured as an extended CP, each first transmission time unit does not include the 4th, 7th and 10th OFDM symbols in the subframe, or each first transmission time unit does not include the 10th OFDM symbol in the subframe 4. The 7th, 8th, and 10th OFDM symbols, or each first transmission time unit does not include the 2nd, 4th, 7th, 8th, and 10th OFDM symbols in the subframe.

Specifically, according to the number of ports of cell-specific reference signals (Cell-Specific Reference Signals, CRS) and different structures of the PDCCH, the OFDM symbols not included in the first transmission unit are different:

If the subframe is configured as a regular CP and the Cell-Specific Reference Signals (CRS) has 1 or 2 ports, each first transmission time unit does not include the 5th, 8th and 12th OFDM symbol.

If the subframe is configured as an extended CP and the CRS has 1 or 2 ports, each first transmission time unit does not include the 4th, 7th and 10th OFDM symbols in the subframe.

If the subframe is configured as a conventional CP, the CRS has 4 ports, and the Physical Downlink Control Channel (PDCCH) occupies 2 or 3 OFDM symbols in the frame, each first transmission time unit does not include the subframe The 5th, 8th, 9th and 12th OFDM symbols in .

If the sub-configuration is extended CP, and the CRS has 4 ports, and the PDCCH occupies 2 or 3 OFDM symbols in the subframe, each first transmission time unit does not include the 4th, 7th, 8th and 10th OFDM symbol.

If the subframe is configured as a regular CP, and the CRS has 4 ports, and the PDCCH occupies 1 OFDM symbol in the subframe, each first transmission time unit does not include the 2nd, 5th, 8th, and 9th in the subframe. and the 12th OFDM symbol;

If the subframe is configured as extended CP, and the CRS has 4 ports, and the PDCCH occupies 1 OFDM symbol in the subframe, each first transmission time unit does not include the 2nd, 4th, 7th, and 8th subframes. and the 10th OFDM symbol.

In some optional embodiments, the possible symbols of the first transmission time unit in the subframe are composed as follows:

If the subframe is configured as a regular CP, the multiple first transmission time units included in the subframe include at least one of the following:

A first transmission time unit consisting of the 3rd and 4th OFDM symbols in the subframe.

A first transmission time unit consisting of the 6th and 7th OFDM symbols in the subframe.

A first transmission time unit consisting of the 9th, 10th, and 11th OFDM symbols in the subframe.

The first transmission time unit formed by the 13th and 14th OFDM symbols in the subframe.

A first transmission time unit consisting of the 3rd, 4th, 6th and 7th OFDM symbols in the subframe.

A first transmission time unit consisting of the 3rd, 4th, 6th, 7th and 9th OFDM symbols in the subframe.

A first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe.

A first transmission time unit consisting of the 9th, 10th, 11th, 13th and 14th OFDM symbols in the subframe.

A first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe.

A first transmission time unit formed by the 4th, 6th, 7th and 9th OFDM symbols in the subframe.

The first transmission time unit formed by the 9th and 10th OFDM symbols in the subframe.

A first transmission time unit consisting of the 11th, 13th, and 14th OFDM symbols in .

A first transmission time unit consisting of the 10th, 11th, 13th and 14th OFDM symbols in the subframe. and / or,

If the subframe is configured as an extended CP, the multiple first transmission time units included in the subframe include at least one of the following:

A first transmission time unit consisting of the 3rd, 5th and 6th OFDM symbols in the subframe.

The first transmission time unit formed by the 8th and 9th OFDM symbols in the subframe.

The first transmission time unit formed by the 11th and 12th OFDM symbols in the subframe.

The first transmission time unit formed by the 3rd and 5th OFDM symbols in the subframe.

a first transmission time unit consisting of the 6th, 8th and 9th OFDM symbols in the subframe;

The first transmission time unit formed by the 5th and 6th OFDM symbols in the subframe.

A first transmission time unit consisting of the 8th, 9th, 11th and 12th OFDM symbols in the subframe.

The first transmission time unit formed by the second and third OFDM symbols in the subframe.

A first transmission time unit consisting of the 2nd, 3rd, 5th and 6th OFDM symbols in the subframe.

A first transmission time unit consisting of the 5th, 6th, 8th and 9th OFDM symbols in the subframe.

A first transmission time unit consisting of the 9th, 11th, and 12th OFDM symbols in the subframe.

It should be noted that the X th symbol described in the embodiment of the present application is counted from 1, and the numbering of the OFDM symbol can be the number described in the embodiment of the present application, or can be transformed according to certain rules. For example, the numbering of the OFDM symbol The number of one OFDM symbol can be 0, and so on.

Specifically, if the subframe is configured as a regular CP, and the cell-specific reference signal (Cell-SpecificReferenceSignals, CRS) has 1 or 2 ports, the multiple first transmission time units included in the subframe include at least one of the following:

A first transmission time unit consisting of the 3rd and 4th OFDM symbols in the subframe.

A first transmission time unit consisting of the 6th and 7th OFDM symbols in the subframe.

A first transmission time unit consisting of the 9th, 10th, and 11th OFDM symbols in the subframe.

The first transmission time unit formed by the 13th and 14th OFDM symbols in the subframe.

A first transmission time unit consisting of the 3rd, 4th, 6th and 7th OFDM symbols in the subframe.

A first transmission time unit consisting of the 3rd, 4th, 6th, 7th and 9th OFDM symbols in the subframe.

A first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe.

A first transmission time unit consisting of the 9th, 10th, 11th, 13th and 14th OFDM symbols in the subframe.

A first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe.

A first transmission time unit formed by the 4th, 6th, 7th and 9th OFDM symbols in the subframe.

The first transmission time unit formed by the 9th and 10th OFDM symbols in the subframe.

A first transmission time unit consisting of the 11th, 13th, and 14th OFDM symbols in .

If the subframe is configured as an extended CP and the CRS has 1 or 2 ports, the multiple first transmission time units included in the subframe include at least one of the following:

A first transmission time unit consisting of the 3rd, 5th and 6th OFDM symbols in the subframe.

The first transmission time unit formed by the 8th and 9th OFDM symbols in the subframe.

The first transmission time unit formed by the 11th and 12th OFDM symbols in the subframe.

The first transmission time unit formed by the 3rd and 5th OFDM symbols in the subframe.

a first transmission time unit consisting of the 6th, 8th and 9th OFDM symbols in the subframe;

The first transmission time unit formed by the 5th and 6th OFDM symbols in the subframe.

A first transmission time unit consisting of the 8th, 9th, 11th and 12th OFDM symbols in the subframe.

The first transmission time unit formed by the second and third OFDM symbols in the subframe.

A first transmission time unit consisting of the 2nd, 3rd, 5th and 6th OFDM symbols in the subframe.

A first transmission time unit consisting of the 5th, 6th, 8th and 9th OFDM symbols in the subframe.

If the subframe is configured as a regular CP, the CRS has 4 ports, and the PDCCH occupies 2 or 3 OFDM symbols in the subframe, the multiple first transmission time units included in the subframe include at least one of the following:

A first transmission time unit consisting of the 3rd and 4th OFDM symbols in the subframe.

A first transmission time unit consisting of the 6th and 7th OFDM symbols in the subframe.

The first transmission time unit formed by the 10th and 11th OFDM symbols in the subframe.

The first transmission time unit formed by the 13th and 14th OFDM symbols in the subframe.

A first transmission time unit consisting of the 3rd, 4th, 6th and 7th OFDM symbols in the subframe.

A first transmission time unit consisting of the 10th, 11th, 13th and 14th OFDM symbols in the subframe.

A first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe.

If the sub-configuration is an extended CP, and the CRS has 4 ports, and the PDCCH occupies 2 or 3 OFDM symbols in the subframe, the multiple first transmission time units included in the subframe include at least one of the following:

A first transmission time unit consisting of the 3rd, 5th and 6th OFDM symbols in the subframe.

The first transmission time unit formed by the 5th and 6th OFDM symbols in the subframe.

A first transmission time unit consisting of the 9th, 11th, and 12th OFDM symbols in the subframe.

If the subframe is configured as a regular CP, the CRS has 4 ports, and the PDCCH occupies one OFDM symbol in the subframe, the multiple first transmission time units included in the subframe include at least one of the following:

A first transmission time unit consisting of the 3rd and 4th OFDM symbols in the subframe.

A first transmission time unit consisting of the 6th and 7th OFDM symbols in the subframe.

A first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe.

The first transmission time unit formed by the 13th and 14th OFDM symbols in the subframe.

A first transmission time unit consisting of the 3rd, 4th, 6th and 7th OFDM symbols in the subframe.

A first transmission time unit consisting of the 10th, 11th, 13th and 14th OFDM symbols in the subframe.

If the subframe is configured as an extended CP, the CRS has 4 ports, and the PDCCH occupies 1 OFDM symbol in the subframe, the multiple first transmission time units included in the subframe include at least one of the following:

A first transmission time unit consisting of the 3rd, 5th and 6th OFDM symbols in the subframe.

A first transmission time unit consisting of the 9th, 11th, and 12th OFDM symbols in the subframe.

It should be noted that the above is a combination of OFDM symbols that may be occupied by a first transmission time unit under various circumstances. In the specific implementation process, several first transmission time units in the above-mentioned multiple first transmission time units may be selected according to actual needs. The transmission unit, that is, combining several first transmission units in the above-mentioned first transmission time unit as required to form a pattern of the first transmission time unit in a subframe.

An optional first transmission time unit pattern composed of the above-mentioned first transmission time units is exemplarily shown below.

5-40 are schematic diagrams of patterns formed by the combination of the first transmission time units, respectively.

1. When the subframe is configured as a conventional CP, and the CRS has 1 or 2 ports, the pattern formed by the first transmission time unit may be the pattern described in FIG. 5-FIG. 19 , wherein FIG. 5-FIG 19 includes The case where the PDCCH occupies 2, 3 and 1 OFDM symbols in a subframe.

2. When the subframe is configured as an extended CP, and the CRS has 1 or 2 ports, the pattern formed by the first transmission time unit may be the pattern described in FIG. 20-FIG. 27 .

3. When the subframe is configured as a conventional CP, and the CRS has 4 ports, and the PDCCH occupies 2 or 3 OFDM symbols in the subframe, the pattern formed by the first transmission time unit can be as described in Figure 28-Figure 33 pattern.

4. When the subframe is configured as an extended CP, and the CRS has 4 ports, and the PDCCH occupies 2 or 3 OFDM symbols in the subframe, the pattern formed by the first transmission time unit can be as described in Figure 34-Figure 35 pattern.

5. When the subframe is configured as a conventional CP, and the CRS has 4 ports, and the PDCCH occupies 1 OFDM symbol in the subframe, the pattern formed by the first transmission time unit may be the pattern described in FIG. 36-FIG. 39 .

6. When the subframe is configured as an extended CP, and the CRS has 4 ports, and the PDCCH occupies 1 OFDM symbol in the subframe, the pattern formed by the first transmission time unit may be the pattern described in FIG. 40 .

The pattern composition of the first transmission time unit in FIGS. 5 to 40 is specifically described in the following embodiments.

Further, the access network device may also schedule the second terminal device according to the second transmission time unit. When the access network device schedules the second terminal device according to the second transmission time unit, the scheduling process includes:

First, the access network device determines at least one second transmission time unit among the plurality of second transmission time units included in the subframe, and the determined second transmission time unit is used to schedule the second terminal device to perform data transmission.

Next, the access network device sends second scheduling information to the second terminal device, where the second scheduling information is used to indicate the determined second transmission time unit. Further, the second terminal device receives data on the corresponding second transmission time unit according to the second scheduling information.

Wherein, the above-mentioned first transmission time unit is divided by the access network equipment according to the first division manner, and the above-mentioned second transmission time unit is divided by the access network equipment according to the second division manner, and the first division manner and the second division manner are different. The access network device may schedule the first terminal device and the second terminal device according to the first transmission time unit and the second transmission time unit, respectively, on the same subframe. When the access network device schedules the first terminal device and the second terminal device on the same subframe, for each first transmission time unit, it is continuous with at least one second transmission time unit symbol or only separated by a preset symbol.

Specifically, if the CRS has 1 or 2 ports, the preset symbol is the 5th, 8th or 12th OFDM symbol in the subframe. If the CRS has 4 ports, the preset symbol is the 5th, 8th, 9th or 12th OFDM symbol in the subframe.

Optionally, the above-mentioned second transmission time unit may be a short-TTI.

The RATs used by the first terminal device and the second terminal device are different. Optionally, the first terminal device may be a 5G terminal device, and the second terminal device may be an LTE terminal device.

Like the first transmission time unit, multiple second transmission time units included in the subframe can also be pre-configured on the access network device and the second terminal device. For example, when the second time unit is short-TTI, the The network access device and the second terminal device can pre-configure which short-TTIs the subframe can contain, and then the access network device can select at least one of these pre-configured short-TTIs to send data to the second terminal device, and pass The scheduling information notifies the second terminal device of the short-TTI selected by the access network device, and the second terminal device receives data on the corresponding mini-slot according to the scheduling information.

Optionally, when the access network device schedules the first terminal device and the second terminal device on the same subframe, the first transmission time unit and the second transmission time unit may be as shown in Figures 5-9 and 11-13. , the pattern described in Figure 28-Figure 33 is divided. Taking FIG. 5 as an example, the division method of the second transmission time unit is shown at the bottom of FIG. 5 , that is, the second transmission time unit is divided according to 2, 3, 2, 2, 2, and 3 in the subframe, and the first transmission time unit is divided. The units can be divided according to 2, 2, 3, and 2 shown in the upper part of FIG. 5. Each first transmission time unit is continuous with each second transmission time unit or symbol, or only separated by one CRS. According to this division method, Regardless of the order in which the access network device schedules the first transmission time unit and the second transmission time unit, it can ensure that the remaining unscheduled resources are used normally, and there will be no waste of resources.

The pattern of the first transmission time unit in FIGS. 5-40 will be described in detail below.

It should be noted that the pattern of the first transmission time unit corresponding to the coexistence of the first transmission time unit and the second transmission time unit in FIG. 5 to FIG. 40 can also be applied when the first transmission time unit does not and the second transmission time In the scenario of unit coexistence, for example, taking FIG. 5 as an example, when the access network device only needs to schedule according to the first transmission time unit, the pattern corresponding to the first transmission time unit in FIG. 5 can also be used to schedule the first terminal device. .

In addition, in the diagrams involving the second transmission unit in FIG. 5 to FIG. 40 , the subframe includes 6 second transmission time units, and the division methods can be divided into two types. In the first type, the first second transmission time unit is composed of the first and second OFDM symbols in the subframe, and the second second transmission time unit is composed of the third, fourth, and fifth OFDM symbols in the subframe. The three second transmission time units are composed of the sixth and seventh OFDM symbols in the subframe, the fourth second transmission time unit is composed of the eighth and ninth OFDM symbols in the subframe, and the fifth second transmission time unit is composed of subframes. The 10th and 11th OFDM symbols in the frame are formed, and the sixth second transmission time unit is formed by the 12th, 13th, and 14th OFDM symbols in the subframe. The pattern formed by the 6 second transmission time units is 2, 3, 2, 2, 2, 3. In the second type, the first second transmission time unit is composed of the first, second, and third OFDM symbols in the subframe, and the second second transmission time unit is composed of the fourth and fifth OFDM symbols in the subframe. The three second transmission time units are composed of the sixth and seventh OFDM symbols in the subframe, the fourth second transmission time unit is composed of the eighth and ninth OFDM symbols in the subframe, and the fifth second transmission time unit is composed of subframes. The 10th and 11th OFDM symbols in the frame are formed, and the sixth second transmission time unit is formed by the 12th, 13th, and 14th OFDM symbols in the subframe. The pattern formed by the 6 second transmission time units is 3, 2, 2, 2, 2, 3. In each figure, one of the above division manners may be used for the second transmission time unit, which will not be repeated in the descriptions of the following figures.

Figure 5:

It includes 4 first transmission time units, the first first transmission time unit is composed of the third and fourth OFDM symbols in the subframe, and the second first transmission time unit is composed of the sixth and seventh OFDM symbols in the subframe , the third first transmission time unit is composed of the 9th, 10th, and 11th OFDM symbols in the subframe, and the fourth first transmission time unit is composed of the 13th and 14th OFDM symbols in the subframe. The pattern formed by the transmission time unit is 2, 2, 3, 2.

It can be seen from Figure 5 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Image 6:

It includes 3 first transmission time units, the first first transmission time unit consists of the 3rd, 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit consists of the 9th, 4th, 6th, and 7th OFDM symbols in the subframe. 10. The eleventh OFDM symbol is formed, the third first transmission time unit is formed by the 13th and 14th OFDM symbols in the subframe, and the pattern formed by the three first transmission time units is 4, 3, and 2.

It can be seen from Figure 6 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 7:

It includes 3 first transmission time units, the first first transmission time unit is composed of the 3rd, 4th, 6th, 7th, and 9th OFDM symbols in the subframe, and the second first transmission time unit is composed of the OFDM symbols in the subframe. The 10th and 11th OFDM symbols are formed, the third first transmission time unit is formed by the 13th and 14th OFDM symbols in the subframe, and the patterns formed by these three first transmission time units are 5, 2, and 2.

It can be seen from Figure 7 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 8:

It includes 2 first transmission time units, the first first transmission time unit is composed of the 3rd, 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 9th, 4th, and 7th OFDM symbols in the subframe. The 10th, 11th, 13th, and 14th OFDM symbols are formed, and the patterns formed by these two first transmission time units are 4 and 5.

It can be seen from Figure 8 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 9:

It includes 3 first transmission time units, the first first transmission time unit is composed of the third and fourth OFDM symbols in the subframe, and the second first transmission time unit is composed of the sixth and seventh OFDM symbols in the subframe , the third first transmission time unit is formed by the 9th, 10th, 11th, 13th, and 14th OFDM symbols in the subframe, and the patterns formed by these three first transmission time units are 2, 2, and 5.

It can be seen from Figure 9 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, no matter the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 10:

It includes 4 first transmission time units, the first first transmission time unit is composed of the third and fourth OFDM symbols in the subframe, and the second first transmission time unit is composed of the sixth and seventh OFDM symbols in the subframe , the third first transmission time unit is composed of the 9th and 10th OFDM symbols in the subframe, and the fourth first transmission time unit is composed of the 11th, 13th, and 14th OFDM symbols in the subframe. A transmission time unit constitutes a pattern of 2, 2, 2, 3.

It can be seen from Figure 10 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 11:

It includes 3 first transmission time units, the first first transmission time unit is composed of the 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 9th, 10th, and 10th OFDM symbols in the subframe. The 11th OFDM symbol is formed, the third first transmission time unit is formed by the 13th and 14th OFDM symbols in the subframe, and the pattern formed by the three first transmission time units is 3, 3, and 2.

It can be seen from Figure 11 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 12:

It includes 2 first transmission time units, the first first transmission time unit is composed of the 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 9th, 10th, and 10th OFDM symbols in the subframe. The 11th, 13th, and 14th OFDM symbols are formed, and the patterns formed by these two first transmission time units are 3 and 5.

It can be seen from Figure 12 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 13:

It includes 3 first transmission time units, the first first transmission time unit consists of the 4th, 6th, 7th, and 9th OFDM symbols in the subframe, and the second first transmission time unit consists of the 10th, 6th, 7th, and 9th OFDM symbols in the subframe. The 11th OFDM symbol is formed, the third first transmission time unit is formed by the 13th and 14th OFDM symbols in the subframe, and the pattern formed by the three first transmission time units is 4, 2, and 2.

It can be seen from Figure 13 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 14:

It includes 3 first transmission time units, the first first transmission time unit consists of the 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit consists of the 9th and 10th OFDM symbols in the subframe The third first transmission time unit is formed by the 11th, 13th, and 14th OFDM symbols in the subframe, and the patterns formed by the three first transmission time units are 3, 2, and 3.

It can be seen from FIG. 14 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 15:

It includes 4 first transmission time units, the first first transmission time unit consists of the 2nd, 3rd, and 4th OFDM symbols in the subframe, and the second first transmission time unit consists of the 6th and 7th OFDM symbols in the subframe It is composed of OFDM symbols, the third first transmission time unit is composed of the 9th and 10th OFDM symbols in the subframe, and the fourth first transmission time unit is composed of the 11th, 13th, and 14th OFDM symbols in the subframe. The pattern formed by the four first transmission time units is 3, 2, 2, and 3.

As can be seen from FIG. 15 , the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 16:

It includes 3 first transmission time units, the first first transmission time unit is composed of the 2nd, 3rd, and 4th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 6th, 7th, and 4th OFDM symbols in the subframe. The 9th and 10th OFDM symbols are formed, and the third first transmission time unit is formed by the 11th, 13th, and 14th OFDM symbols in the subframe. The pattern formed by these three first transmission time units is 3,4 , 3.

It can be seen from FIG. 16 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 17:

It includes 4 first transmission time units, the first first transmission time unit is composed of the 2nd and 3rd OFDM symbols in the subframe, and the second first transmission time unit is composed of the 4th, 6th, and 7th OFDM symbols in the subframe It is composed of OFDM symbols, the third first transmission time unit is composed of the 9th and 10th OFDM symbols in the subframe, and the fourth first transmission time unit is composed of the 11th, 13th, and 14th OFDM symbols in the subframe. The pattern formed by the 4 first transmission time units is 2,3,2,3.

As can be seen from FIG. 17 , the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 18:

It includes 3 first transmission time units, the first first transmission time unit is composed of the 2nd, 3rd, 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit is composed of the second, third, fourth, sixth, and seventh OFDM symbols in the subframe. The 9th and 10th OFDM symbols are formed, and the third first transmission time unit is formed by the 11th, 13th, and 14th OFDM symbols in the subframe. The pattern formed by these three first transmission time units is 5,2 , 3.

It can be seen from FIG. 18 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 19:

It includes 3 first transmission time units, the first first transmission time unit is composed of the second and third OFDM symbols in the subframe, and the second first transmission time unit is composed of the fourth, sixth, and seventh subframes. It is composed of OFDM symbols. The third first transmission time unit is composed of the 9th, 10th, 11th, 13th, and 14th OFDM symbols in the subframe. The pattern formed by these three first transmission time units is 2, 3 , 5.

It can be seen from FIG. 19 that the first transmission time unit avoids the control channel and the CRS and is not continuous, thus ensuring flexible scheduling.

Figure 20:

It includes 3 first transmission time units, the first first transmission time unit is composed of the 3rd, 5th, and 6th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 8th and 9th OFDM symbols in the subframe It is composed of OFDM symbols, and the third first transmission time unit is composed of the 11th and 12th OFDM symbols in the subframe, and the pattern formed by these three first transmission time units is 3, 2, and 2.

It can be seen from FIG. 20 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 21:

Including 3 first transmission time units, the first first transmission time unit is composed of the 3rd and 5th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 6th, 8th, and 9th symbols in the subframe It is composed of OFDM symbols, and the third first transmission time unit is composed of the 11th and 12th OFDM symbols in the subframe, and the patterns formed by these three first transmission time units are 2, 3, and 2.

It can be seen from FIG. 21 that the first transmission time unit avoids the control channel and the CRS and is not continuous, thus ensuring flexible scheduling.

Figure 22:

It includes 3 first transmission time units, the first first transmission time unit is composed of the 5th and 6th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 8th and 9th OFDM symbols in the subframe , the third first transmission time unit is formed by the 11th and 12th OFDM symbols in the subframe, and the patterns formed by the three first transmission time units are 2, 2, and 2.

It can be seen from FIG. 22 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 23:

It includes 2 first transmission time units, the first first transmission time unit is composed of the 5th and 6th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 8th, 9th, 11th, The 12th OFDM symbol is formed, and the pattern formed by the two first transmission time units is 2,4.

It can be seen from FIG. 23 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 24:

It includes 4 first transmission time units, the first first transmission time unit is composed of the second and third OFDM symbols in the subframe, and the second first transmission time unit is composed of the fifth and sixth OFDM symbols in the subframe , the third first transmission time unit is composed of the 8th and 9th OFDM symbols in the subframe, and the fourth first transmission time unit is composed of the 11th and 12th OFDM symbols in the subframe. These 4 first transmission time units The pattern formed by the cells is 2,2,2,2.

It can be seen from FIG. 24 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 25:

It includes 3 first transmission time units, the first first transmission time unit is composed of the 2nd, 3rd, 5th, and 6th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 8th, 5th, and 6th OFDM symbols in the subframe. The ninth OFDM symbol is formed, the third first transmission time unit is formed by the 11th and 12th OFDM symbols in the subframe, and the pattern formed by the three first transmission time units is 4, 2, and 2.

It can be seen from FIG. 25 that the first transmission time unit avoids the control channel and CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 26:

It includes 3 first transmission time units, the first first transmission time unit is composed of the second and third OFDM symbols in the subframe, and the second first transmission time unit is composed of the fifth and sixth OFDM symbols in the subframe , the third first transmission time unit is formed by the 8th, 9th, 11th, and 12th OFDM symbols in the subframe, and the patterns formed by these three first transmission time units are 2, 2, and 4.

It can be seen from FIG. 26 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 27:

It includes three first transmission time units, the first first transmission time unit is composed of the second and third OFDM symbols in the subframe, and the second first transmission time unit is composed of the fifth, sixth, eighth, The ninth OFDM symbol is formed, the third first transmission time unit is formed by the 11th and 12th OFDM symbols in the subframe, and the patterns formed by the three first transmission time units are 2, 4, and 2.

It can be seen from FIG. 27 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 28:

It includes 4 first transmission time units, the first first transmission time unit is composed of the third and fourth OFDM symbols in the subframe, and the second first transmission time unit is composed of the sixth and seventh OFDM symbols in the subframe , the third first transmission time unit is composed of the 10th and 11th OFDM symbols in the subframe, and the fourth first transmission time unit is composed of the 13th and 14th OFDM symbols in the subframe. These four first transmission time units The pattern formed by the cells is 2, 2, 2, 2.

As can be seen from Figure 28, the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 29:

It includes 3 first transmission time units, the first first transmission time unit is composed of the 3rd, 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 10th, 4th, 6th, and 7th OFDM symbols in the subframe. The 11th OFDM symbol is formed, the fourth first transmission time unit is formed by the 13th and 14th OFDM symbols in the subframe, and the pattern formed by the three first transmission time units is 4, 2, and 2.

As can be seen from Figure 29, the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, no matter the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 30:

It includes 2 first transmission time units, the first first transmission time unit is composed of the 3rd, 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 10th, 4th, 6th, and 7th OFDM symbols in the subframe. The 11th, 13th, and 14th OFDM symbols are formed, and the patterns formed by these two first transmission time units are 4 and 4.

It can be seen from Figure 30 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, no matter the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 31:

It includes 3 first transmission time units, the first first transmission time unit is composed of the third and fourth OFDM symbols in the subframe, and the second first transmission time unit is composed of the sixth and seventh OFDM symbols in the subframe , the third first transmission time unit is formed by the 10th, 11th, 13th, and 14th OFDM symbols in the subframe, and the patterns formed by these three first transmission time units are 2, 2, and 4.

As can be seen from Figure 31, the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 32:

Including 3 first transmission time units, the first first transmission time unit consists of the 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit consists of the 10th and 11th OFDM symbols in the subframe It is composed of OFDM symbols, and the third first transmission time unit is composed of the 13th and 14th OFDM symbols in the subframe, and the pattern formed by the three first transmission time units is 3, 2, and 2.

It can be seen from Figure 32 that the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, no matter the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 33:

It includes 2 first transmission time units, the first first transmission time unit is composed of the 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 10th, 11th, and 11th OFDM symbols in the subframe. 13. The 14th OFDM symbol is formed, and the pattern formed by the two first transmission time units is 3 and 4.

As can be seen from Figure 33, the first transmission time unit and the second transmission time unit are either continuous or separated by only one CRS. Such a division can ensure that when the first transmission time unit and the second time unit coexist, regardless of the access network No matter how the device is scheduled, the resources in the subframe will not be wasted.

In addition, the first transmission time unit avoids the PDCCH control channel and the CRS, and thus avoids affecting the data reception and channel estimation of the LTE user.

Figure 34:

It includes 2 first transmission time units, the first first transmission time unit is composed of the 3rd, 5th, and 6th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 9th, 11th, 11th, The 12th OFDM symbol is formed, and the pattern formed by the two first transmission time units is 3,3.

It can be seen from FIG. 34 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 35:

It includes 2 first transmission time units, the first first transmission time unit is composed of the 5th and 6th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 9th, 11th, and 12th symbols in the subframe The OFDM symbol is formed, and the pattern formed by the two first transmission time units is 2,3.

It can be seen from FIG. 35 that the first transmission time unit avoids the control channel and CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 36:

It includes 4 first transmission time units, the first first transmission time unit is composed of the third and fourth OFDM symbols in the subframe, and the second first transmission time unit is composed of the sixth and seventh OFDM symbols in the subframe , the third first transmission time unit is composed of the 10th and 11th OFDM symbols in the subframe, and the fourth first transmission time unit is composed of the 13th and 14th OFDM symbols in the subframe. These four first transmission time units The pattern formed by the cells is 2,2,2,2.

It can be seen from FIG. 36 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 37:

It includes 3 first transmission time units, the first first transmission time unit is composed of the 3rd, 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 10th, 4th, 6th, and 7th OFDM symbols in the subframe. The 11th OFDM symbol is formed, the third first transmission time unit is formed by the 13th and 14th OFDM symbols in the subframe, and the pattern formed by the three first transmission time units is 4, 2, and 2.

It can be seen from FIG. 37 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 38:

It includes 3 first transmission time units, the first first transmission time unit is composed of the third and fourth OFDM symbols in the subframe, and the second first transmission time unit is composed of the sixth and seventh OFDM symbols in the subframe , the third first transmission time unit is formed by the 10th, 11th, 13th, and 14th OFDM symbols in the subframe, and the patterns formed by these three first transmission time units are 2, 2, and 4.

It can be seen from FIG. 38 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 39:

It includes 2 first transmission time units, the first first transmission time unit is composed of the 3rd, 4th, 6th, and 7th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 10th, 4th, 6th, and 7th OFDM symbols in the subframe. The 11th, 13th, and 14th OFDM symbols are formed, and the patterns formed by the two first transmission time units are 4 and 4.

It can be seen from FIG. 39 that the first transmission time unit avoids the control channel and CRS and is discontinuous, thus ensuring flexible scheduling.

Figure 40:

It includes 2 first transmission time units, the first first transmission time unit is composed of the 3rd, 5th, and 6th OFDM symbols in the subframe, and the second first transmission time unit is composed of the 9th, 11th, 11th, The 12th OFDM symbol is formed, and the pattern formed by the two first transmission time units is 3,3.

It can be seen from FIG. 40 that the first transmission time unit avoids the control channel and the CRS and is discontinuous, thus ensuring flexible scheduling.

When the access network device schedules the terminal device according to the above-mentioned first transmission time unit, it may schedule the terminal device according to the single first transmission time unit described in the above FIG. 5 to FIG. 40 . Further, in some scenarios, the access network device may also The multiple first transmission time units shown in FIG. 5 to FIG. 40 can be combined to form a larger first transmission time unit for scheduling terminal devices. Taking FIG. 5 as an example, the access network device may combine the four first transmission time units 2, 2, 3, and 2 into one first transmission time unit, and this first transmission time unit contains 9 symbols, or, The access network device may combine the four first transmission time units of 2, 2, 3, and 2 into two first transmission time units of 7 and 2. Therefore, the first transmission time unit described in this application may be the above-mentioned single first transmission time unit, or may be the first transmission time unit formed by the combination of these single transmission time units, whether it is a single transmission time unit or other The transmission time unit formed by the combination is all within the protection scope of the present application. When some terminal devices need more transmission resources and a single first transmission time unit cannot meet the scheduling requirements, the access network device may schedule the terminal by using a first transmission time unit formed by combining multiple first transmission time units equipment to meet scheduling requirements.

FIG. 41 is a module structure diagram of the first embodiment of the access network device provided by this application. As shown in FIG. 41 , the access network device includes:

The processor 4101 is configured to determine at least one first transmission time unit among the multiple first transmission time units included in the subframe, and the determined first transmission time unit is used to schedule the first terminal device to perform data transmission.

The transceiver 4102 is configured to send first scheduling information to the first terminal device, where the first scheduling information is used to indicate the determined first transmission time unit.

Wherein, the subframe includes multiple OFDM symbols, and the first transmission time unit is composed of at least two OFDM symbols among the multiple OFDM symbols.

The access network device is used to implement the functions corresponding to the access network device in the foregoing method embodiments, and the implementation principle and technical effect thereof are similar, which will not be repeated here.

In another embodiment, at least one first transmission time unit in the plurality of first transmission time units is composed of a plurality of discontinuous symbols in a subframe.

In another embodiment, if the subframe is configured as a regular CP, each first transmission time unit does not include the 5th, 8th, and 12th OFDM symbols in the subframe, or each first transmission time unit does not include the 5th, 8th, and 12th OFDM symbols in the subframe. Including the 5th, 8th, 9th and 12th OFDM symbols in the subframe, or each first transmission time unit does not include the 2nd, 5th, 8th, 9th and 12th OFDM symbols in the subframe symbol;

and / or,

If the subframe is configured as an extended CP, each first transmission time unit does not include the 4th, 7th and 10th OFDM symbols in the subframe, or each first transmission time unit does not include the 10th OFDM symbol in the subframe 4. The 7th, 8th, and 10th OFDM symbols, or each first transmission time unit does not include the 2nd, 4th, 7th, 8th, and 10th OFDM symbols in the subframe.

In another embodiment, if the subframe is configured as a regular CP, the multiple first transmission time units included in the subframe include at least one of the following:

a first transmission time unit consisting of the 3rd and 4th OFDM symbols in the subframe;

a first transmission time unit consisting of the sixth and seventh OFDM symbols in the subframe;

a first transmission time unit consisting of the 9th, 10th and 11th OFDM symbols in the subframe;

a first transmission time unit consisting of the 13th and 14th OFDM symbols in the subframe;

a first transmission time unit formed by the 3rd, 4th, 6th and 7th OFDM symbols in the subframe;

a first transmission time unit consisting of the 3rd, 4th, 6th, 7th and 9th OFDM symbols in the subframe;

a first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe;

a first transmission time unit formed by the 9th, 10th, 11th, 13th and 14th OFDM symbols in the subframe;

The first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe

a first transmission time unit consisting of the 4th, 6th, 7th and 9th OFDM symbols in the subframe;

a first transmission time unit formed by the 9th and 10th OFDM symbols in the subframe;

a first transmission time unit consisting of the 11th, 13th and 14th OFDM symbols in the subframe;

a first transmission time unit consisting of the 10th, 11th, 13th and 14th OFDM symbols in the subframe;

and / or,

If the subframe is configured as an extended CP, the multiple first transmission time units included in the subframe include at least one of the following:

a first transmission time unit consisting of the 3rd, 5th and 6th OFDM symbols in the subframe;

a first transmission time unit consisting of the 8th and 9th OFDM symbols in the subframe;

a first transmission time unit consisting of the 11th and 12th OFDM symbols in the subframe;

a first transmission time unit consisting of the third and fifth OFDM symbols in the subframe;

a first transmission time unit consisting of the 6th, 8th and 9th OFDM symbols in the subframe;

a first transmission time unit formed by the fifth and sixth OFDM symbols in the subframe;

a first transmission time unit consisting of the 8th, 9th, 11th and 12th OFDM symbols in the subframe;

a first transmission time unit consisting of the second and third OFDM symbols in the subframe;

a first transmission time unit consisting of the 2nd, 3rd, 5th and 6th OFDM symbols in the subframe;

a first transmission time unit consisting of the 5th, 6th, 8th and 9th OFDM symbols in the subframe;

A first transmission time unit consisting of the 9th, 11th, and 12th OFDM symbols in the subframe.

In another embodiment, the above-mentioned first transmission time unit is a mini-slot.

In another embodiment, the subframe is divided into a plurality of first transmission time units according to a first division manner, and the subframe is further divided into a plurality of second transmission time units according to a second division manner, and the first division manner is the same as the first division manner. The two divisions are different.

Processor 4101 is also used to:

determining at least one second transmission time unit among the plurality of second transmission time units included in the subframe, where the determined second transmission time unit is used to schedule the second terminal device to perform data transmission; and

Transceiver 4102 is also used to:

Send second scheduling information to the second terminal device, where the second scheduling information is used to indicate the determined second transmission time unit.

Wherein, the second transmission time unit is composed of at least two OFDM symbols among the plurality of OFDM symbols, and each first transmission time unit and at least one second transmission time unit symbol are consecutive or separated by only one preset symbol.

In another embodiment, the above-mentioned preset symbol is the 5th, 8th or 12th OFDM symbol in the subframe; or,

The above-mentioned preset symbol is the 5th, 8th, 9th or 12th OFDM symbol in the subframe.

In another embodiment, the OFDM symbols occupied by the multiple first transmission time units included in the subframe are known to the first terminal device; or,

Transceiver 4102 is also used to:

Sending indication information to the first terminal device, where the indication information is used to indicate OFDM symbols occupied by multiple first transmission time units included in the subframe.

In another embodiment, the RATs used by the first terminal device and the second terminal device are different.

In another embodiment, the transceiver 4102 is further used to:

Data transmission is performed with the first terminal device on the determined first transmission time unit by using first frequency domain resources, where the first frequency domain resources are frequency domain resources shared by different RATs.

FIG. 42 is a module structure diagram of Embodiment 1 of a terminal device provided by this application. As shown in FIG. 42 , the terminal device includes:

The transceiver 4201 is configured to receive first scheduling information sent by an access network device, where the first scheduling information is used to indicate a first transmission time unit, and the indicated first transmission time unit is a plurality of first transmission time units included in a subframe At least one first transmission time unit in the transmission time unit, and the indicated first transmission time unit is used for scheduling terminal equipment to perform data transmission.

The processor 4202 is configured to perform data transmission with the access network device on the indicated first transmission time unit.

Wherein, the subframe includes multiple OFDM symbols with orthogonal frequency division multiplexing technology, and the first transmission time unit is formed by at least two OFDM symbols among the multiple OFDM symbols.

The terminal device is used to implement the function corresponding to the first terminal device in the foregoing method embodiments, and its implementation principle and technical effect are similar, and details are not repeated here.

In another embodiment, at least one first transmission time unit in the plurality of first transmission time units is composed of a plurality of discontinuous symbols in a subframe.

In another embodiment, if the subframe is configured as a regular CP, each first transmission time unit does not include the 5th, 8th, and 12th OFDM symbols in the subframe, or each first transmission time unit does not include the 5th, 8th, and 12th OFDM symbols in the subframe. Including the 5th, 8th, 9th and 12th OFDM symbols in the subframe, or each first transmission time unit does not include the 2nd, 5th, 8th, 9th and 12th OFDM symbols in the subframe symbol;

and / or,

If the subframe is configured as an extended CP, each first transmission time unit does not include the 4th, 7th and 10th OFDM symbols in the subframe, or each first transmission time unit does not include the 10th OFDM symbol in the subframe 4. The 7th, 8th, and 10th OFDM symbols, or each first transmission time unit does not include the 2nd, 4th, 7th, 8th, and 10th OFDM symbols in the subframe.

In another embodiment, if the subframe is configured as a regular CP, the multiple first transmission time units included in the subframe include at least one of the following:

a first transmission time unit consisting of the 3rd and 4th OFDM symbols in the subframe;

a first transmission time unit consisting of the sixth and seventh OFDM symbols in the subframe;

a first transmission time unit consisting of the 9th, 10th and 11th OFDM symbols in the subframe;

a first transmission time unit consisting of the 13th and 14th OFDM symbols in the subframe;

a first transmission time unit formed by the 3rd, 4th, 6th and 7th OFDM symbols in the subframe;

a first transmission time unit consisting of the 3rd, 4th, 6th, 7th and 9th OFDM symbols in the subframe;

a first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe;

a first transmission time unit formed by the 9th, 10th, 11th, 13th and 14th OFDM symbols in the subframe;

The first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe

a first transmission time unit consisting of the 4th, 6th, 7th and 9th OFDM symbols in the subframe;

a first transmission time unit formed by the 9th and 10th OFDM symbols in the subframe;

a first transmission time unit consisting of the 11th, 13th and 14th OFDM symbols in the subframe;

a first transmission time unit consisting of the 10th, 11th, 13th and 14th OFDM symbols in the subframe;

and / or,

If the subframe is configured as an extended CP, the multiple first transmission time units included in the subframe include at least one of the following:

a first transmission time unit consisting of the 3rd, 5th and 6th OFDM symbols in the subframe;

a first transmission time unit consisting of the 8th and 9th OFDM symbols in the subframe;

a first transmission time unit consisting of the 11th and 12th OFDM symbols in the subframe;

a first transmission time unit consisting of the third and fifth OFDM symbols in the subframe;

a first transmission time unit consisting of the 6th, 8th and 9th OFDM symbols in the subframe;

a first transmission time unit formed by the fifth and sixth OFDM symbols in the subframe;

a first transmission time unit consisting of the 8th, 9th, 11th and 12th OFDM symbols in the subframe;

a first transmission time unit consisting of the second and third OFDM symbols in the subframe;

a first transmission time unit consisting of the 2nd, 3rd, 5th and 6th OFDM symbols in the subframe;

a first transmission time unit consisting of the 5th, 6th, 8th and 9th OFDM symbols in the subframe;

A first transmission time unit consisting of the 9th, 11th, and 12th OFDM symbols in the subframe.

In another embodiment, the above-mentioned first transmission time unit is a mini-slot.

In another embodiment, the OFDM symbols occupied by the multiple first transmission time units included in the subframe are known to the first terminal device; or,

Transceiver 4201 is also used to:

The indication information sent by the access network device is received, where the indication information is used to indicate the OFDM symbols occupied by the multiple first transmission time units included in the subframe.

In another embodiment, the transceiver 4201 is further used for:

Data transmission is performed with the access network device on the indicated first transmission time unit using the first frequency domain resource, where the first frequency domain resource is a frequency domain resource shared by different RATs.

FIG. 43 is an entity block diagram of the first embodiment of an access network device according to an embodiment of the present invention. As shown in FIG. 43 , the access network device includes:

Memory 4301 and Processor 4302.

The memory 4301 is used to store program instructions, and the processor 4302 is used to call the program instructions in the memory 4301 to implement the functions of the access network device described in the above method embodiments.

FIG. 44 is an entity block diagram of Embodiment 1 of a terminal device provided by an embodiment of the present invention. As shown in FIG. 44 , the terminal device includes:

Memory 4401 and Processor 4402.

The memory 4401 is used to store program instructions, and the processor 4402 is used to call the program instructions in the memory 4301 to implement the functions of the first terminal device described in the above method embodiments.

Claims (28)

1. a data transmission method, is characterized in that, comprises: The access network device determines at least one first transmission time unit among the multiple first transmission time units included in the subframe, and the determined first transmission time unit is used to schedule the first terminal device to perform data transmission; sending, by the access network device, first scheduling information to the first terminal device, where the first scheduling information is used to indicate the determined first transmission time unit; Wherein, the subframe includes multiple orthogonal frequency division multiplexing technology OFDM symbols, and the first transmission time unit is composed of at least two OFDM symbols in the multiple OFDM symbols; The subframe is divided into the plurality of first transmission time units according to a first division manner, and the subframe is further divided into a plurality of second transmission time units according to a second division manner, the first division manner different from the second division; The method also includes: The access network device determines at least one second transmission time unit among the plurality of second transmission time units included in the subframe, and the determined second transmission time unit is used to schedule the second terminal device to perform data transmission; and The access network device sends second scheduling information to the second terminal device, where the second scheduling information is used to indicate the determined second transmission time unit, Wherein, the radio access technologies adopted by the first terminal device and the second terminal device are different, the second transmission time unit is composed of at least two OFDM symbols in the plurality of OFDM symbols, and for each OFDM symbol The first transmission time unit and at least one second transmission time unit symbol are consecutive or separated by only one preset symbol, and the preset symbol is the 5th, 8th or 12th OFDM symbol in the subframe; or, The preset symbol is the 5th, 8th, 9th or 12th OFDM symbol in the subframe. 2 . The method according to claim 1 , wherein at least one first transmission time unit in the plurality of first transmission time units is composed of a plurality of discontinuous symbols in the subframe. 3 . 3. The method according to claim 1 or 2, characterized in that, If the subframe is configured as a regular cyclic prefix CP, each of the first transmission time units does not include the 5th, 8th and 12th OFDM symbols in the subframe, or each of the 12th OFDM symbols A transmission time unit does not include the 5th, 8th, 9th and 12th OFDM symbols in the subframe, or each of the first transmission time unit does not include the 2nd and 5th OFDM symbols in the subframe , the 8th, 9th and 12th OFDM symbols; and / or, If the subframe is configured as an extended CP, each of the first transmission time units does not include the 4th, 7th and 10th OFDM symbols in the subframe, or each of the first transmissions The time unit does not include the 4th, 7th, 8th, and 10th OFDM symbols in the subframe, or each of the first transmission time units does not include the 2nd, 4th, and 10th OFDM symbols in the subframe 7. The 8th and 10th OFDM symbols. 4. The method according to any one of claims 1 to 3, characterized in that, If the subframe is configured as a regular CP, the multiple first transmission time units included in the subframe include at least one of the following: a first transmission time unit consisting of the third and fourth OFDM symbols in the subframe; a first transmission time unit consisting of the sixth and seventh OFDM symbols in the subframe; a first transmission time unit formed by the 9th, 10th and 11th OFDM symbols in the subframe; a first transmission time unit formed by the 13th and 14th OFDM symbols in the subframe; a first transmission time unit formed by the 3rd, 4th, 6th and 7th OFDM symbols in the subframe; a first transmission time unit formed by the 3rd, 4th, 6th, 7th and 9th OFDM symbols in the subframe; a first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe; a first transmission time unit formed by the 9th, 10th, 11th, 13th and 14th OFDM symbols in the subframe; a first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe; a first transmission time unit formed by the 4th, 6th, 7th and 9th OFDM symbols in the subframe; a first transmission time unit formed by the ninth and tenth OFDM symbols in the subframe; a first transmission time unit formed by the 11th, 13th and 14th OFDM symbols in the subframe; a first transmission time unit formed by the 10th, 11th, 13th and 14th OFDM symbols in the subframe; and / or, If the subframe is configured as an extended CP, the multiple first transmission time units included in the subframe include at least one of the following: a first transmission time unit formed by the 3rd, 5th and 6th OFDM symbols in the subframe; a first transmission time unit formed by the eighth and ninth OFDM symbols in the subframe; a first transmission time unit formed by the 11th and 12th OFDM symbols in the subframe; a first transmission time unit formed by the third and fifth OFDM symbols in the subframe; a first transmission time unit formed by the sixth, eighth and ninth OFDM symbols in the subframe; a first transmission time unit formed by the fifth and sixth OFDM symbols in the subframe; a first transmission time unit formed by the 8th, 9th, 11th and 12th OFDM symbols in the subframe; a first transmission time unit formed by the second and third OFDM symbols in the subframe; a first transmission time unit formed by the 2nd, 3rd, 5th and 6th OFDM symbols in the subframe; a first transmission time unit formed by the 5th, 6th, 8th and 9th OFDM symbols in the subframe; A first transmission time unit formed by the 9th, 11th, and 12th OFDM symbols in the subframe. 5. The method according to any one of claims 1 to 4, wherein the first transmission time unit is a mini-slot. 6. The method according to claim 1, wherein the OFDM symbols occupied by multiple first transmission time units included in the subframe are known to the first terminal device; or, The access network device sends indication information to the first terminal device, where the indication information is used to indicate OFDM symbols occupied by multiple first transmission time units included in the subframe. 7. The method according to any one of claims 1 to 6, further comprising: The access network device performs data transmission with the first terminal device on the determined first transmission time unit using a first frequency domain resource, where the first frequency domain resource is a frequency domain resource shared by different RATs. 8. A data transmission method, comprising: The first terminal device receives first scheduling information sent by the access network device, where the first scheduling information is used to indicate at least one first transmission time unit, and the indicated first transmission time unit is a plurality of first transmission time units included in the subframe. At least one first transmission time unit in a transmission time unit, the indicated first transmission time unit is used to schedule the first terminal device to perform data transmission; the first terminal device performs data transmission with the access network device on the indicated first transmission time unit; Wherein, the subframe includes multiple orthogonal frequency division multiplexing technology OFDM symbols, and the first transmission time unit is formed by at least two OFDM symbols in the multiple OFDM symbols; The subframe is divided into the plurality of first transmission time units according to a first division manner, and the subframe is further divided into a plurality of second transmission time units according to a second division manner, the first division manner different from the second division; The method also includes: The second terminal device receives second scheduling information sent by the access network device, where the second scheduling information is used to indicate at least one second transmission time unit, and the indicated second transmission time unit is a plurality of first transmission time units included in the subframe. At least one second transmission time unit in the two transmission time units, the indicated second transmission time unit is used to schedule the second terminal device to perform data transmission; Wherein, the radio access technologies adopted by the first terminal device and the second terminal device are different, the second transmission time unit is composed of at least two OFDM symbols in the plurality of OFDM symbols, and for each OFDM symbol The first transmission time unit and at least one second transmission time unit symbol are consecutive or separated by only one preset symbol, and the preset symbol is the 5th, 8th or 12th OFDM symbol in the subframe; or, The preset symbol is the 5th, 8th, 9th or 12th OFDM symbol in the subframe. 9 . The method according to claim 8 , wherein at least one first transmission time unit in the plurality of first transmission time units is composed of a plurality of discontinuous symbols in the subframe. 10 . 10. The method according to claim 8 or 9, characterized in that, If the subframe is configured as a regular cyclic prefix CP, each of the first transmission time units does not include the 5th, 8th and 12th OFDM symbols in the subframe, or each of the 12th OFDM symbols A transmission time unit does not include the 5th, 8th, 9th and 12th OFDM symbols in the subframe, or each of the first transmission time unit does not include the 2nd and 5th OFDM symbols in the subframe , the 8th, 9th and 12th OFDM symbols; and / or, If the subframe is configured as an extended CP, each of the first transmission time units does not include the 4th, 7th, and 10th OFDM symbols in the subframe, or each of the first transmissions The time unit does not include the 4th, 7th, 8th, and 10th OFDM symbols in the subframe, or each of the first transmission time units does not include the 2nd, 4th, and 10th OFDM symbols in the subframe 7. The 8th and 10th OFDM symbols. 11. The method according to any one of claims 8 to 10, wherein, If the subframe is configured as a regular CP, the multiple first transmission time units included in the subframe include at least one of the following: a first transmission time unit consisting of the third and fourth OFDM symbols in the subframe; a first transmission time unit consisting of the sixth and seventh OFDM symbols in the subframe; a first transmission time unit formed by the 9th, 10th and 11th OFDM symbols in the subframe; a first transmission time unit formed by the 13th and 14th OFDM symbols in the subframe; a first transmission time unit formed by the 3rd, 4th, 6th and 7th OFDM symbols in the subframe; a first transmission time unit formed by the 3rd, 4th, 6th, 7th and 9th OFDM symbols in the subframe; a first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe; a first transmission time unit formed by the 9th, 10th, 11th, 13th and 14th OFDM symbols in the subframe; a first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe; a first transmission time unit formed by the 4th, 6th, 7th and 9th OFDM symbols in the subframe; a first transmission time unit formed by the ninth and tenth OFDM symbols in the subframe; a first transmission time unit formed by the 11th, 13th and 14th OFDM symbols in the subframe; a first transmission time unit formed by the 10th, 11th, 13th and 14th OFDM symbols in the subframe; and / or, If the subframe is configured as an extended CP, the multiple first transmission time units included in the subframe include at least one of the following: a first transmission time unit formed by the 3rd, 5th and 6th OFDM symbols in the subframe; a first transmission time unit formed by the eighth and ninth OFDM symbols in the subframe; a first transmission time unit formed by the 11th and 12th OFDM symbols in the subframe; a first transmission time unit formed by the third and fifth OFDM symbols in the subframe; a first transmission time unit formed by the sixth, eighth and ninth OFDM symbols in the subframe; a first transmission time unit formed by the fifth and sixth OFDM symbols in the subframe; a first transmission time unit formed by the 8th, 9th, 11th and 12th OFDM symbols in the subframe; a first transmission time unit formed by the second and third OFDM symbols in the subframe; a first transmission time unit formed by the 2nd, 3rd, 5th and 6th OFDM symbols in the subframe; a first transmission time unit formed by the 5th, 6th, 8th and 9th OFDM symbols in the subframe; A first transmission time unit formed by the 9th, 11th, and 12th OFDM symbols in the subframe. 12. The method according to any one of claims 8 to 11, wherein the first transmission time unit is a mini-slot. The method according to any one of claims 8-12, wherein the OFDM symbols occupied by multiple first transmission time units included in the subframe are known to the first terminal device; or, The first terminal device receives indication information sent by the access network device, where the indication information is used to indicate OFDM symbols occupied by multiple first transmission time units included in the subframe. The method according to any one of claims 8-13, wherein the data transmission performed by the first terminal device with the access network device in the indicated first transmission time unit comprises: The first terminal device performs data transmission with the access network device on the indicated first transmission time unit using a first frequency domain resource, where the first frequency domain resource is a frequency domain resource shared by different RATs. 15. An access network device, comprising: a processor, configured to determine at least one first transmission time unit among the multiple first transmission time units included in the subframe, and the determined first transmission time unit is used to schedule the first terminal device to perform data transmission; a transceiver, configured to send first scheduling information to the first terminal device, where the first scheduling information is used to indicate the determined first transmission time unit; Wherein, the subframe includes multiple orthogonal frequency division multiplexing technology OFDM symbols, and the first transmission time unit is composed of at least two OFDM symbols in the multiple OFDM symbols; The subframe is divided into the plurality of first transmission time units according to a first division manner, and the subframe is further divided into a plurality of second transmission time units according to a second division manner, the first division manner different from the second division; The processor is also used to: determining at least one second transmission time unit among the plurality of second transmission time units included in the subframe, where the determined second transmission time unit is used to schedule the second terminal device to perform data transmission; and The transceiver is also used to: sending second scheduling information to the second terminal device, where the second scheduling information is used to indicate the determined second transmission time unit; Wherein, the radio access technologies adopted by the first terminal device and the second terminal device are different, the second transmission time unit is composed of at least two OFDM symbols in the plurality of OFDM symbols, and for each OFDM symbol The first transmission time unit and at least one second transmission time unit symbol are consecutive or separated by only one preset symbol, and the preset symbol is the 5th, 8th or 12th OFDM symbol in the subframe; or, The preset symbol is the 5th, 8th, 9th or 12th OFDM symbol in the subframe. 16 . The access network device according to claim 15 , wherein at least one first transmission time unit in the plurality of first transmission time units is composed of a plurality of discontinuous symbols in the subframe. 17 . . 17. The access network device according to claim 15 or 16, wherein if the subframe is configured as a regular cyclic prefix (CP), each of the first transmission time units does not include the subframe in the subframe. The 5th, 8th and 12th OFDM symbols, or each of said first transmission time units does not include the 5th, 8th, 9th and 12th OFDM symbols in said subframe, or each the first transmission time unit does not include the 2nd, 5th, 8th, 9th and 12th OFDM symbols in the subframe; and / or, If the subframe is configured as an extended CP, each of the first transmission time units does not include the 4th, 7th and 10th OFDM symbols in the subframe, or each of the first transmissions The time unit does not include the 4th, 7th, 8th, and 10th OFDM symbols in the subframe, or each of the first transmission time units does not include the 2nd, 4th, and 10th OFDM symbols in the subframe 7. The 8th and 10th OFDM symbols. 18. The access network device according to any one of claims 15-17, wherein, If the subframe is configured as a regular CP, the multiple first transmission time units included in the subframe include at least one of the following: a first transmission time unit consisting of the third and fourth OFDM symbols in the subframe; a first transmission time unit consisting of the sixth and seventh OFDM symbols in the subframe; a first transmission time unit formed by the 9th, 10th and 11th OFDM symbols in the subframe; a first transmission time unit formed by the 13th and 14th OFDM symbols in the subframe; a first transmission time unit formed by the 3rd, 4th, 6th and 7th OFDM symbols in the subframe; a first transmission time unit formed by the 3rd, 4th, 6th, 7th and 9th OFDM symbols in the subframe; a first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe; a first transmission time unit formed by the 9th, 10th, 11th, 13th and 14th OFDM symbols in the subframe; a first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe; a first transmission time unit formed by the 4th, 6th, 7th and 9th OFDM symbols in the subframe; a first transmission time unit formed by the ninth and tenth OFDM symbols in the subframe; a first transmission time unit formed by the 11th, 13th and 14th OFDM symbols in the subframe; a first transmission time unit formed by the 10th, 11th, 13th and 14th OFDM symbols in the subframe; and / or, If the subframe is configured as an extended CP, the multiple first transmission time units included in the subframe include at least one of the following: a first transmission time unit formed by the 3rd, 5th and 6th OFDM symbols in the subframe; a first transmission time unit formed by the eighth and ninth OFDM symbols in the subframe; a first transmission time unit formed by the 11th and 12th OFDM symbols in the subframe; a first transmission time unit formed by the third and fifth OFDM symbols in the subframe; a first transmission time unit formed by the sixth, eighth and ninth OFDM symbols in the subframe; a first transmission time unit formed by the fifth and sixth OFDM symbols in the subframe; a first transmission time unit formed by the 8th, 9th, 11th and 12th OFDM symbols in the subframe; a first transmission time unit formed by the second and third OFDM symbols in the subframe; a first transmission time unit formed by the 2nd, 3rd, 5th and 6th OFDM symbols in the subframe; a first transmission time unit formed by the 5th, 6th, 8th and 9th OFDM symbols in the subframe; A first transmission time unit formed by the 9th, 11th, and 12th OFDM symbols in the subframe. 19. The access network device according to any one of claims 15-18, wherein the first transmission time unit is a mini-slot. 20. The access network device according to claim 15, wherein the OFDM symbols occupied by multiple first transmission time units included in the subframe are known to the first terminal device; or, The transceiver is also used to: Sending indication information to the first terminal device, where the indication information is used to indicate OFDM symbols occupied by multiple first transmission time units included in the subframe. 21. The access network device according to any one of claims 15-20, wherein the transceiver is further configured to: Data transmission is performed with the first terminal device on the determined first transmission time unit using a first frequency domain resource, where the first frequency domain resource is a frequency domain resource shared by different RATs. 22. A terminal device, the terminal device comprising a first terminal device and a second terminal device, the first terminal device comprising a first transceiver and a first processor, the second terminal device comprising a second transceiver and a second processor, characterized in that it includes: A first transceiver, configured to receive first scheduling information sent by an access network device, where the first scheduling information is used to indicate a first transmission time unit, and the indicated first transmission time unit is a plurality of subframes included At least one first transmission time unit in the first transmission time unit, the indicated first transmission time unit is used to schedule the first terminal device to perform data transmission; a first processor, configured to perform data transmission with the access network device on the indicated first transmission time unit; Wherein, the subframe includes multiple orthogonal frequency division multiplexing technology OFDM symbols, and the first transmission time unit is composed of at least two OFDM symbols in the multiple OFDM symbols; The subframe is divided into the plurality of first transmission time units according to a first division manner, and the subframe is further divided into a plurality of second transmission time units according to a second division manner, the first division manner different from the second division; A second transceiver for: Receive second scheduling information sent by the access network device, where the second scheduling information is used to indicate at least one second transmission time unit, and the indicated second transmission time unit is a plurality of second transmission time units included in the subframe At least one second transmission time unit in the indicated second transmission time unit is used to schedule the second terminal device to perform data transmission; a second processor, configured to: perform data transmission with the access network device on the indicated second transmission time unit; Wherein, the radio access technologies adopted by the first terminal device and the second terminal device are different, the second transmission time unit is composed of at least two OFDM symbols in the plurality of OFDM symbols, and for each OFDM symbol The first transmission time unit and at least one second transmission time unit symbol are consecutive or separated by only one preset symbol, and the preset symbol is the 5th, 8th or 12th OFDM symbol in the subframe; or, The preset symbol is the 5th, 8th, 9th or 12th OFDM symbol in the subframe. 23. The terminal device according to claim 22, wherein at least one first transmission time unit in the plurality of first transmission time units is composed of a plurality of discontinuous symbols in the subframe. 24. The terminal device according to claim 22 or 23, wherein, If the subframe is configured as a regular cyclic prefix CP, each of the first transmission time units does not include the 5th, 8th and 12th OFDM symbols in the subframe, or each of the 12th OFDM symbols A transmission time unit does not include the 5th, 8th, 9th and 12th OFDM symbols in the subframe, or each of the first transmission time unit does not include the 2nd and 5th OFDM symbols in the subframe , the 8th, 9th and 12th OFDM symbols; and / or, If the subframe is configured as an extended CP, each of the first transmission time units does not include the 4th, 7th and 10th OFDM symbols in the subframe, or each of the first transmissions The time unit does not include the 4th, 7th, 8th, and 10th OFDM symbols in the subframe, or each of the first transmission time units does not include the 2nd, 4th, and 10th OFDM symbols in the subframe 7. The 8th and 10th OFDM symbols. 25. The terminal device according to any one of claims 22-24, wherein, If the subframe is configured as a regular CP, the multiple first transmission time units included in the subframe include at least one of the following: a first transmission time unit consisting of the third and fourth OFDM symbols in the subframe; a first transmission time unit consisting of the sixth and seventh OFDM symbols in the subframe; a first transmission time unit formed by the 9th, 10th and 11th OFDM symbols in the subframe; a first transmission time unit formed by the 13th and 14th OFDM symbols in the subframe; a first transmission time unit formed by the 3rd, 4th, 6th and 7th OFDM symbols in the subframe; a first transmission time unit formed by the 3rd, 4th, 6th, 7th and 9th OFDM symbols in the subframe; a first transmission time unit consisting of the 10th and 11th OFDM symbols in the subframe; a first transmission time unit formed by the 9th, 10th, 11th, 13th and 14th OFDM symbols in the subframe; a first transmission time unit consisting of the 4th, 6th and 7th OFDM symbols in the subframe; a first transmission time unit formed by the 4th, 6th, 7th and 9th OFDM symbols in the subframe; a first transmission time unit formed by the ninth and tenth OFDM symbols in the subframe; a first transmission time unit formed by the 11th, 13th and 14th OFDM symbols in the subframe; a first transmission time unit formed by the 10th, 11th, 13th and 14th OFDM symbols in the subframe; and / or, If the subframe is configured as an extended CP, the multiple first transmission time units included in the subframe include at least one of the following: a first transmission time unit formed by the 3rd, 5th and 6th OFDM symbols in the subframe; a first transmission time unit formed by the eighth and ninth OFDM symbols in the subframe; a first transmission time unit formed by the 11th and 12th OFDM symbols in the subframe; a first transmission time unit formed by the third and fifth OFDM symbols in the subframe; a first transmission time unit formed by the sixth, eighth and ninth OFDM symbols in the subframe; a first transmission time unit formed by the fifth and sixth OFDM symbols in the subframe; a first transmission time unit formed by the 8th, 9th, 11th and 12th OFDM symbols in the subframe; a first transmission time unit formed by the second and third OFDM symbols in the subframe; a first transmission time unit formed by the 2nd, 3rd, 5th and 6th OFDM symbols in the subframe; a first transmission time unit formed by the 5th, 6th, 8th and 9th OFDM symbols in the subframe; A first transmission time unit formed by the 9th, 11th, and 12th OFDM symbols in the subframe. 26. The terminal device according to any one of claims 22-25, wherein the first transmission time unit is a mini-slot. 27. The terminal device according to any one of claims 22-26, wherein the OFDM symbols occupied by multiple first transmission time units included in the subframe are known to the first terminal device; or , The first transceiver is also used for: Receive indication information sent by the access network device, where the indication information is used to indicate OFDM symbols occupied by multiple first transmission time units included in the subframe. 28. The terminal device according to any one of claims 22-27, wherein the first transceiver is further configured to: Data transmission is performed with the access network device on the indicated first transmission time unit by using a first frequency domain resource, where the first frequency domain resource is a frequency domain resource shared by different RATs.

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