WO2018027808A1

WO2018027808A1 - Information feedback method and device

Info

Publication number: WO2018027808A1
Application number: PCT/CN2016/094680
Authority: WO
Inventors: 刘哲; 张兴炜; 黎超; 时洁; 孙迎花
Original assignee: 华为技术有限公司
Priority date: 2016-08-11
Filing date: 2016-08-11
Publication date: 2018-02-15

Abstract

The present invention provides an information feedback method and device. The method comprises: receiving, over a current subframe, scheduling information sent by a base station, the scheduling information being used for instructing a terminal device to send transmission information corresponding to the scheduling information to the base station; determining a target subframe used for sending the transmission information, the target subframe being spaced from the current subframe by k subframes, and k being a positive integer smaller than a preset threshold; and sending, over the target subframe, the determined transmission information to the base station. The invention is used for improving the flexibility of feedback of transmission information.

Description

Information feedback method and device

Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to an information feedback method and device.

Background technique

Licensed Assisted Access (LAA) is a spectrum usage scheme that enables efficient sharing of licensed and unlicensed spectrum.

In the LAA technology, since multiple applications (such as WiFi) can be deployed in the unlicensed spectrum, the use of the unlicensed spectrum has a contention access mechanism. Therefore, when the base station needs the terminal device to feed back the aperiodic type of transmission information (for example, For uplink data, aperiodic channel quality information, aperiodic reference signals, etc., the terminal equipment needs to perform data transmission under the scheduling of the base station. In the prior art, the base station sends scheduling information to the terminal device through the subframe n. After the terminal device receives the scheduling information, the terminal device determines the transmission information that needs to be fed back according to the scheduling information, and sends the transmission information to the base station in the subframe n+4. Determine the resulting transmission information.

However, in the prior art, after the terminal device receives the scheduling information through the subframe n, the transmission information can only be transmitted to the base station in the subframe n+4, resulting in poor flexibility in feeding back the transmission information to the base station to the base station. .

Summary of the invention

The embodiment of the invention provides an information feedback method and device for improving flexibility of transmission information feedback.

In a first aspect, an embodiment of the present invention provides an information feedback method, where the execution subject of the method is a terminal device, and the method includes: after the terminal device receives the scheduling information sent by the base station in the current subframe, the terminal device acquires the scheduling information corresponding to the And transmitting the information, and determining a target subframe for transmitting the transmission information, and transmitting the determined transmission information to the base station on the target subframe. The target subframe is separated from the current subframe by k subframes, and k is a positive integer smaller than a preset threshold.

In this application, after the terminal device receives the scheduling information, the terminal device does not need to transmit the transmission information only in the fourth subframe after the current subframe, and the terminal device may be after the current subframe. The transmission information is transmitted in any one of the preset threshold sub-frames, thereby improving the flexibility of the transmission information feedback. Further, if the terminal device sends the transmission information on the first to third subframes after the current subframe, the delay of the feedback transmission information may also be reduced.

In a possible implementation manner, determining a target subframe for transmitting transmission information includes:

Receiving first indication information sent by the base station, where the first indication information is used to indicate the target subframe;

Determining the target subframe according to the first indication information.

When the first indication information includes the identifier of the target subframe, correspondingly, determining the target subframe according to the first indication information, including:

The target subframe is determined according to the identity of the target subframe.

When the first indication information includes the preset time interval, correspondingly, determining the target subframe according to the first indication information includes:

Determining a target subframe according to the current subframe and the preset time interval, where the time interval between the current subframe and the target subframe is a preset time interval.

In the above process, the first indication information is sent by the base station to the terminal device, so that the terminal device determines the target subframe according to the first indication information. Specifically, the base station sends the indication to the terminal device according to the status of each second subframe. The first indication information of the target subframe avoids allocating the same target subframe to the terminal device that receives the scheduling information in different subframes, thereby avoiding frequency domain resource usage conflict.

In another possible implementation manner, after determining, by the terminal device, the target subframe according to the first indication information, the method further includes:

Determining whether the state of the target subframe is a normal state;

If the judgment result is no, the first subframe is determined;

Correspondingly, the determined transmission information is sent to the base station on the target subframe, including:

The transmission information is transmitted in the first subframe.

After the terminal device acquires the target subframe determined by the base station, the state of the target subframe is also detected. When the state of the target subframe is an abnormal state, the terminal device requests the base station to acquire the first subframe, and sends the transmission information to the base station in the first subframe, thereby increasing the transmission opportunity of the transmission information, and improving the feedback transmission information. reliability.

Optionally, determining the first subframe includes:

Sending spare subframe request information to the base station;

Receiving second indication information sent by the base station, where the second indication information is used to indicate the first subframe;

Determining the first subframe according to the second indication information.

In another possible implementation manner, determining a target subframe for transmitting transmission information includes:

Determining at least one second subframe corresponding to the current subframe, where the number of subframes between the second subframe and the current subframe is less than a preset threshold;

The target subframe is determined in the second subframe according to the state of each second subframe.

In this possible implementation manner, the terminal device may determine the target subframe in the second subframe according to the states of the second subframes by using two possible implementation manners as follows:

A feasible implementation:

Obtaining a state of the Nth second subframe, where the Nth subframe is separated from the current subframe by N-1 subframes;

If the state of the Nth second subframe is a normal state, determining the Nth second subframe as the target subframe;

If the state of the Nth second subframe is an abnormal state, N is incremented by 1, and the above process is repeatedly performed until it is determined that the target subframe is obtained;

Where N is a positive integer less than or equal to a preset threshold, and initially, N is equal to 1.

In this feasible implementation manner, as long as the terminal device detects the subframe in the normal state, the subframe in the normal state is determined as the target subframe, so that the terminal device can quickly acquire the target subframe in the normal state, and the determination is improved. The efficiency of the target subframe and the delay in transmitting the transmission information.

Another possible implementation:

Determining, according to the state of each second subframe, a normal subframe set in the second subframe, where the states of the subframes in the normal subframe set are all normal states;

The subframe in the normal subframe set with the smallest time interval between the current subframe is determined as the target subframe, thereby reducing the delay of transmitting the transmission information.

In a second aspect, an embodiment of the present invention provides an information feedback method, where the method is performed by a base station, and the method may include: after the base station determines to send scheduling information to the terminal device in the current subframe, acquiring the current subframe corresponding to the current subframe Determining, in the at least one second subframe, the target subframe in the at least one second subframe, and transmitting, to the terminal device, first indication information indicating the target subframe, where the second subframe is spaced from the current subframe k subframe, where k is a positive integer less than a preset threshold.

In this application, the target subframe determined by the base station may be any one of the preset threshold subframes after the current subframe, so that the terminal device may preset the subframes after the current subframe. The transmission information is transmitted in any one of the subframes, thereby improving the flexibility of transmitting information feedback. Further, if the terminal device sends the transmission information on the first to third subframes after the current subframe, the delay of the feedback transmission information may also be reduced.

In a possible implementation, determining the target subframe in the at least one second subframe includes:

Determining an idle subframe in the at least one second subframe, the idle subframe being a subframe that is not allocated for transmitting the transmission information;

The idle subframe is determined as the target subframe.

Optionally, determining the idle subframe as the target subframe includes:

Get the number of idle subframes;

If the number of idle subframes is 1, the idle subframe is determined as the target subframe;

If the number of idle subframes is greater than 1, the subframe with the smallest time interval between the current subframe and the current subframe is determined as the target subframe.

In this feasible implementation manner, when the base station allocates the target subframe to the terminal device, the base station allocates the target subframe to the terminal device according to the state of each second subframe, and avoids the terminal device that receives the scheduling information in different subframes. Allocate the same target subframe to avoid frequency domain resource usage conflicts.

In another possible implementation manner, determining the target subframe in the at least one second subframe includes:

Obtaining a resource occupancy rate corresponding to each second subframe, and a time interval between each second subframe and the current subframe;

Determining a selection coefficient of each second subframe according to a resource occupancy rate corresponding to each second subframe and a time interval between each second subframe and a current subframe;

The second subframe having the smallest selection coefficient is determined as the target subframe.

In another possible implementation manner, the first indication information used to indicate the target subframe is sent to the terminal device, including:

Generating first indication information according to the identifier of the target subframe;

Sending the first indication information to the terminal device.

Obtaining a time interval between the target subframe and the current subframe;

Generating first indication information according to the time interval;

Sending the first indication information to the terminal device.

In another possible implementation manner, after the first indication information for indicating the target subframe is sent to the terminal device, the method further includes:

Receiving spare subframe request information sent by the terminal device;

Determining the first subframe according to the spare subframe request information;

Sending second indication information indicating the first subframe to the terminal device.

In this possible implementation manner, when the state of the target subframe is an abnormal state, the terminal device sends the standby subframe request information to the base station, and after receiving the standby subframe request information, the base station determines the first subframe, and The terminal device sends the second indication information for indicating the first pointer, so that the terminal device sends the transmission information to the base station in the first subframe, thereby increasing the transmission opportunity of the transmission information, and improving the reliability of the feedback transmission information.

In a third aspect, an embodiment of the present invention provides a terminal device, including:

a receiving module, configured to receive scheduling information sent by the base station in the current subframe, where the scheduling information is used to instruct the terminal device to send the transmission information corresponding to the scheduling information to the base station;

a first determining module, configured to determine a target subframe for transmitting transmission information, where the target subframe is separated from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold;

And a sending module, configured to send the determined transmission information to the base station on the target subframe.

In a possible implementation manner, the receiving module is further configured to receive first indication information that is sent by the base station, where the first indication information is used to indicate the target subframe.

Correspondingly, the first determining module is specifically configured to determine the target subframe according to the first indication information.

In another possible implementation manner, the first indication information includes an identifier of the target subframe;

Correspondingly, the first determining module is specifically configured to determine the target subframe according to the identifier of the target subframe.

In another possible implementation manner, the first indication information includes a preset time interval;

Correspondingly, the first determining module is configured to determine the target subframe according to the current subframe and the preset time interval, where the time interval between the current subframe and the target subframe is a preset time interval.

In another possible implementation manner, the terminal device further includes a determining module and a second determining module, where

The determining module is configured to: after determining, by the first determining module, the target subframe according to the first indication information, determining whether the state of the target subframe is a normal state;

The second determining module is configured to: when the determining module determines that the state of the target subframe is not normal, Determining the first subframe;

Correspondingly, the sending module is specifically configured to send the transmission information in the first subframe.

In another possible implementation manner, the sending module is further configured to send the standby subframe request information to the base station;

The receiving module is further configured to receive second indication information sent by the base station, where the second indication information is used to indicate the first subframe;

Correspondingly, the second determining module is specifically configured to determine the first subframe according to the second indication information.

In another possible implementation manner, the first determining module includes a first determining unit and a second determining unit, where

The first determining unit is configured to determine at least one second subframe corresponding to the current subframe, where the number of subframes between the second subframe and the current subframe is less than a preset threshold;

The second determining unit is configured to determine the target subframe in the second subframe according to the state of each second subframe.

In another possible implementation manner, the second determining unit is specifically configured to:

A subframe in the normal subframe set that has the smallest time interval from the current subframe is determined as the target subframe.

The terminal device provided by the embodiment of the present invention can perform the technical solution shown in the foregoing method embodiment, and the implementation principle and the beneficial effects are similar, and details are not described herein again.

In a fourth aspect, an embodiment of the present invention provides a base station, including:

a first acquiring module, after determining to send scheduling information to the terminal device on the current subframe, Obtaining at least one second subframe corresponding to the current subframe, where the second subframe is spaced from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold;

a first determining module, configured to determine a target subframe in the at least one second subframe;

And a sending module, configured to send, to the terminal device, first indication information used to indicate the target subframe.

In a possible implementation, the first determining module includes a first determining unit and a second determining unit, where

The first determining unit is configured to determine, in the at least one second subframe, an idle subframe, where the idle subframe is a subframe that is not allocated for transmitting the transmission information;

The second determining unit is configured to determine the idle subframe as the target subframe.

Get the number of idle subframes;

In another possible implementation manner, the first determining module is specifically configured to:

In another possible implementation manner, the base station further includes a generating module, where

The generating module is configured to generate first indication information according to the identifier of the target subframe;

Correspondingly, the sending module is specifically configured to send the first indication information to the terminal device.

In another possible implementation manner, the base station further includes a second acquiring module, where

The second obtaining module is configured to acquire a time interval between the target subframe and the current subframe.

Correspondingly, the generating module is further configured to generate first indication information according to the time interval;

The sending module is specifically configured to send the first indication information to the terminal device.

In another possible implementation, the base station further includes a receiving module and a second determining module, where

The receiving module is configured to send, by the sending module, the first finger for indicating the target subframe to the terminal device After the information is displayed, receiving the standby subframe request information sent by the terminal device;

The second determining module is configured to determine, according to the spare subframe request information, the first subframe;

The sending module is further configured to send, to the terminal device, second indication information that is used to indicate the first subframe.

The base station provided by the embodiment of the present invention may perform the technical solution shown in the foregoing method embodiment, and the implementation principle and the beneficial effects are similar, and details are not described herein again.

In a fifth aspect, an embodiment of the present invention provides a terminal device, including a processor, a receiver, a transmitter, and a memory for storing an application, where

The receiver is configured to receive scheduling information sent by the base station in the current subframe, where the scheduling information is used to instruct the terminal device to send the transmission information corresponding to the scheduling information to the base station;

The processor is configured to determine a target subframe for transmitting transmission information, where the target subframe is separated from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold;

The transmitter is configured to send the determined transmission information to the base station on the target subframe.

In a possible implementation manner, the receiver is specifically configured to:

Determining the target subframe according to the first indication information.

Correspondingly, the processor is specifically configured to determine the target subframe according to the identifier of the target subframe.

Correspondingly, the processor is specifically configured to determine the target subframe according to the current subframe and the preset time interval, where the time interval between the current subframe and the target subframe is a preset time interval.

In another possible implementation manner, after the determining, by the processor, the target subframe according to the first indication information, the processor is further configured to:

Determining whether the state of the target subframe is a normal state;

If the result of the determination is no, the first subframe is determined, and the transmission information is transmitted in the first subframe.

In another possible implementation manner, the transmitter is specifically configured to send the standby subframe request information to the base station;

The receiver is specifically configured to receive second indication information that is sent by the base station, where the second indication information is used to indicate the first subframe;

Determining the first subframe according to the second indication information.

In another possible implementation manner, the processor is specifically configured to:

In a sixth aspect, an embodiment of the present invention provides a base station, including a processor, a transmitter, and a memory for storing an application, where

The processor is configured to: after determining to send the scheduling information to the terminal device in the current subframe, acquire at least one second subframe corresponding to the current subframe, and the interval between the second subframe and the current subframe is k subframes, k a positive integer less than a preset threshold;

The processor is further configured to determine a target subframe in the at least one second subframe;

The transmitter is configured to send, to the terminal device, first indication information used to indicate a target subframe.

In a possible implementation manner, the processor is specifically configured to:

The idle subframe is determined as the target subframe.

Get the number of idle subframes;

In another possible implementation manner, the processor is specifically configured to: acquire a resource occupancy rate corresponding to each second subframe, and a time interval between each second subframe and the current subframe;

In another possible implementation, the processor is specifically configured to: generate, according to the identifier of the target subframe, the first indication information;

The transmitter is specifically configured to send the first indication information to the terminal device.

In another possible implementation manner, the processor is specifically configured to: acquire a time interval between the target subframe and the current subframe, and generate first indication information according to the time interval;

In another possible implementation, the base station further includes a receiver, where

The receiver is configured to receive standby subframe request information sent by the terminal device;

The processor is specifically configured to determine, according to the spare subframe request information, the first subframe;

The transmitter is further configured to send, to the terminal device, second indication information that is used to indicate the first subframe.

The information feedback method and device provided by the embodiment of the present invention, after the terminal device receives the scheduling information sent by the base station in the current subframe, the terminal device determines the transmission information corresponding to the scheduling information, and determines the target subframe for transmitting the transmission information. The target subframe is separated from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold, and the measured transmission information is sent to the base station on the target subframe. In the foregoing process, the terminal device does not need to send the transmission information only in the fourth subframe after the current subframe, and the terminal device may send the transmission information in any one of the preset threshold subframes after the current subframe. This improves the flexibility of transmitting information feedback. Further, if the terminal device sends the transmission information on the first to third subframes after the current subframe, the delay of the feedback transmission information may also be reduced.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

FIG. 1 is a schematic diagram of an application scenario of a method for transmitting information feedback according to an embodiment of the present disclosure;

2 is a schematic flowchart of a method for feeding back information according to an embodiment of the present invention;

FIG. 3 is a structural diagram of a system frame according to an embodiment of the present invention;

4 is a schematic flowchart 1 of a method for determining a target subframe according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart 1 of a method for determining, by a base station, a target subframe according to an embodiment of the present disclosure;

FIG. 6 is a second schematic flowchart of a method for determining, by a base station, a target subframe according to an embodiment of the present disclosure;

FIG. 7 is a schematic flowchart of a method for determining a first subframe according to an embodiment of the present disclosure;

FIG. 8 is a second schematic flowchart of a method for determining a target subframe according to an embodiment of the present disclosure;

FIG. 9 is a schematic flowchart 1 of a method for determining a target subframe by a terminal device according to an embodiment of the present disclosure;

FIG. 10 is a second schematic flowchart of a method for determining a target subframe by a terminal device according to an embodiment of the present disclosure;

FIG. 11 is a schematic structural diagram 1 of a terminal device according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram 2 of a terminal device according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram 1 of a base station according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram 2 of a base station according to an embodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of hardware of a terminal device according to an embodiment of the present disclosure;

FIG. 16 is a first schematic structural diagram of a hardware structure of a base station according to an embodiment of the present disclosure;

FIG. 17 is a second schematic structural diagram of a hardware structure of a base station according to an embodiment of the present invention.

detailed description

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. The following description refers to the same or similar elements in the different figures unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent the same as the present invention. There are implementations. Instead, they are merely examples of devices and methods consistent with aspects of the invention as detailed in the appended claims.

FIG. 1 is a schematic diagram of an application scenario of an information feedback method according to an embodiment of the present invention. Referring to FIG. 1, a base station 101 and a plurality of terminal devices (recorded as 102-1 to 102-N, respectively) are included. Each of the multi-terminal devices is located within the service range of the base station. When the base station needs the terminal device to feed back the transmission information (for example, the uplink data, the aperiodic channel quality information, the aperiodic reference signal, and the like), the base station sends the scheduling information to the terminal device, where the scheduling information is used to instruct the terminal device to feed back the corresponding transmission to the base station. information. The terminal device determines corresponding transmission information according to the scheduling information, and feeds back the determined transmission information to the base station. In the present application, after the terminal device receives the scheduling information on the current subframe n, the terminal device may determine the target subframe n+k, and send the determined transmission information to the base station on the target subframe n+k, k Any positive integer between 0 and the preset threshold, so that the terminal device does not need to transmit the transmission information to the base station only on the target subframe n+4, thereby improving the flexibility of the transmission information feedback. Hereinafter, the technical solutions shown in the present application will be described in detail by way of specific examples.

It should be noted that the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

FIG. 2 is a schematic flowchart of a method for transmitting information feedback according to an embodiment of the present invention. Referring to FIG. 2, the method may include:

S201: Receive scheduling information sent by the base station in the current subframe, where the scheduling information is used to instruct the terminal device to send the transmission information corresponding to the scheduling information to the base station.

S202. Determine a target subframe for transmitting transmission information, where the target subframe is separated from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold.

S203. Send the determined transmission information to the base station on the target subframe.

In the embodiment shown in FIG. 2, in the LAA technique, uplink data (data transmitted by the terminal device to the base station) and downlink data (data transmitted by the base station to the terminal device) are transmitted in the form of system frames. Next, the structure of the system frame will be described in detail in conjunction with FIG.

FIG. 3 is a structural diagram of a system frame according to an embodiment of the present invention. Referring to FIG. 3, a system frame includes 10 subframes, and each subframe includes 2 slots. Each time slot is 0.5 milliseconds, each subframe is 1 millisecond, and one system frame is 10 milliseconds. In the actual application process, in the process of data transmission by the base station and the terminal device, data transmission may be started from any subframe in the system frame.

In the actual application process, when the base station needs to obtain the feedback information of the terminal device, the base station is The scheduling information is sent to the terminal device on the current subframe. Optionally, the scheduling information may include a type of transmission information that the base station needs to feed back the terminal device. Optionally, the type of the transmission information includes an uplink data type, a channel quality information type, a reference signal type, and the like. For example, when the base station needs to acquire the downlink channel information, the type of the transmission information included in the scheduling information sent by the base station to the terminal device is the channel quality information type; when the base station needs to acquire the uplink channel information, the base station sends the scheduling information to the terminal device. The type of the transmission information included is the reference signal type. When the base station needs to acquire the uplink data, the type of the transmission information included in the scheduling information sent by the base station to the terminal device is the uplink data type. Optionally, the base station may send scheduling information to the terminal device by using the same carrier or different carriers, where the scheduling information may also indicate the frequency domain resource that the terminal device needs to use.

After the terminal device receives the scheduling information sent by the base station in the current subframe, the terminal device acquires the transmission information corresponding to the scheduling information. Optionally, the transmission information may include uplink data, a channel state information (CSI) of a preset channel, a sounding reference signal (SRS), and the like, where the CSI may include Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Precoding Type Indication (PTI), and Rank Indicator (RI). Of course, the transmission information may also include other types of content. In the actual application process, the specific content included in the transmission information may be set according to actual needs, which is not specifically limited by the present invention.

The terminal device also determines a target subframe for transmitting the transmission information, and transmits the measured transmission information to the base station on the target subframe. Specifically, the terminal device may determine, as the target subframe, any subframe that is spaced from the current subframe by a k (k is a positive integer less than a preset threshold) subframes, where the target subframe is located after the current subframe. Optionally, the preset threshold may be 4. Optionally, the preset threshold may be pre-configured. For example, the preset threshold may be configured in a protocol. The preset threshold may also be configured when the base station sends scheduling information to the terminal device. Optionally, the preset threshold may be configured by physical layer signaling, high layer signaling, or the like.

Exemplarily, it is assumed that the terminal device receives the scheduling information sent by the base station on the subframe n, and the scheduling information is used to indicate that the terminal feeds back the channel information of the channel 1 - channel 3. The terminal device measures channel 1 - channel 3 according to the control command, and acquires channel information of channel 1 - channel 3. Assuming that the preset threshold is 4, the terminal device determines the target subframe as the subframe n+1, the subframe n+2, the subframe n+3, and the subframe n+4. The terminal device may be in the subframe n+1, the subframe n+2, the subframe n+3, and the subframe n+4. Any one of the subframes is determined as the target subframe. Assuming that the terminal device determines the subframe n+2 as the target subframe, the terminal device transmits the transmission information (transmission information) of the channel 1-channel 3 to the base station on the subframe n+2.

The information feedback method provided by the embodiment of the present invention, after the terminal device receives the scheduling information sent by the base station in the current subframe, the terminal device determines the transmission information corresponding to the scheduling information, and determines a target subframe for transmitting the transmission information, where The target subframe is separated from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold, and the measured transmission information is sent to the base station on the target subframe. In the foregoing process, the terminal device does not need to send the transmission information only in the fourth subframe after the current subframe, and the terminal device may send the transmission information in any one of the preset threshold subframes after the current subframe. This improves the flexibility of transmitting information feedback. Further, if the terminal device sends the transmission information on the first to third subframes after the current subframe, the delay of the feedback transmission information may also be reduced.

On the basis of the embodiment shown in FIG. 2, optionally, after the base station sends the scheduling information to the terminal device, the target subframe may be determined by the base station, or the target subframe may be determined by the terminal device. In the following, the above two feasible implementation manners are respectively described in detail. Specifically, the process of determining the target subframe by the base station will be described by using the embodiments shown in FIG. 4-7. The process of determining the target subframe by the terminal device will be described with reference to the embodiments shown in FIGS. 8-10.

FIG. 4 is a schematic flowchart 1 of a method for determining a target subframe according to an embodiment of the present invention. Referring to FIG. 4, the method may include:

S401. The base station acquires at least one second subframe corresponding to the current subframe. The second subframe is separated from the current subframe by a k subframe, where k is a positive integer smaller than a preset threshold.

S402. The base station determines the target subframe in the at least one second subframe.

S403. The base station sends, to the terminal device, first indication information that is used to indicate the target subframe.

S404. The terminal device determines the target subframe according to the first indication information.

In the embodiment shown in FIG. 4, after the base station determines that the scheduling information is sent to the terminal device in the current subframe, the base station acquires at least one second subframe corresponding to the current subframe, where the second subframe and the current subframe are Interval k subframes. For example, if the current subframe is the subframe n, the second subframe is any one of the subframe n+1, the subframe n+2, the subframe n+3, and the subframe n+4.

The base station determines the target subframe in the at least one second subframe. Optionally, the base station may randomly determine any one of the second subframes as the target subframe, and the base station may determine the target subframe according to the resource occupancy of each second subframe. Of course, the base station can also be based on other feasible implementations. The target subframe is determined in one second subframe, which is not specifically limited in the present invention.

After the base station determines that the target subframe is obtained, the base station generates first indication information for indicating the target subframe, and sends the first indication information to the terminal device. Optionally, the base station may carry the first indication information in the control instruction when sending the control instruction to the terminal device. The base station may also send the first indication information to the terminal device after sending the control command to the terminal device.

After the terminal device receives the first indication information sent by the base station, the terminal device determines the target subframe according to the first indication information. Specifically, the terminal device determines the subframe indicated by the first indication information as the target subframe.

On the basis of the embodiment shown in FIG. 4, optionally, the base station can determine the target subframe by using two possible implementation manners. For details, refer to the embodiment shown in FIG. 5-6.

5 is a schematic flowchart 1 of a method for a base station to determine a target subframe according to an embodiment of the present invention. Referring to FIG. 4, the method may include:

S501. The base station determines, in the at least one second subframe, an idle subframe, where the idle subframe is a subframe that is not allocated for transmitting the transmission information.

S502. The base station determines the idle subframe as the target subframe.

In the embodiment shown in FIG. 5, after the base station determines that at least one second subframe is obtained, the base station acquires the state of each second subframe. The state of the second subframe includes an occupied state and an idle state, wherein if the subframe for transmitting the transmission information is not allocated to the second subframe, the state of the second subframe is an idle state; A subframe for transmitting the transmission information is allocated in the two subframes, and the state of the second subframe is an occupied state.

It should be noted that, in the current time, if the second subframe is in the occupied state, the base station determines the second subframe as the target subframe corresponding to the other terminal device in the subframe before the current time.

Exemplarily, the current subframe is a subframe n, and the second subframe is a subframe n+1, a subframe n+2, a subframe n+3, and a subframe n+4, if the second subframe is n+2 For the occupied state, it is explained that in the subframe before the subframe n (for example, the subframe n-1, the subframe n-2, and the like), the second subframe n+2 is determined as the target subframe corresponding to the other terminal device.

After the base station acquires the obtained idle subframe, the base station determines the idle subframe as the target subframe. Optionally, the base station may obtain the number of idle subframes. If the number of idle subframes is 1, the idle subframe is determined as the target subframe; if the number of idle subframes is greater than 1, the idle subframe is obtained. The subframe in which the time interval between the current subframe and the current subframe is the smallest is determined as the target subframe.

In the actual application process, if the scheduling information is sent to different terminal devices in different subframes, and the target subframes allocated for the different terminal devices are the same, the different terminal devices are allocated in the target subframe. The frequency domain resources may be the same, which in turn leads to frequency domain resource usage conflicts. For example, the scheduling information is sent to the terminal device 1 on the subframe n, the target subframe allocated for the terminal device 1 is the subframe n+4, and the scheduling information is sent to the terminal device 2 on the subframe n+1, which is the terminal. The target subframe allocated by the device 2 is also the subframe n+4, and the frequency domain resources allocated to the terminal device 1 and the terminal device 2 in the subframe n+4 may be the same, thereby causing the frequency domain resource to use conflict. In the foregoing process, when the base station allocates the target subframe to the terminal device, the base station allocates the target subframe to the terminal device according to the state of each second subframe, and avoids assigning the same to the terminal device that receives the scheduling information in different subframes. Target sub-frames to avoid frequency domain resource usage conflicts.

Hereinafter, the method shown in the embodiment of Fig. 5 will be described in detail by way of a specific example.

Exemplarily, the current subframe is assumed to be subframe n, and the second subframe is subframe n+1, subframe n+2, subframe n+3, and subframe n+4. It is also assumed that the subframe in which the scheduling information is transmitted to other terminal devices in the subframe before the current time and the target subframe allocated to other terminal devices are as shown in Table 1:

Table 1

终端设备的标识Terminal device identification	发送调度信息的子帧Subframe from which scheduling information is sent	目标子帧Target subframe
终端设备2-终端设备10Terminal device 2 - terminal device 10	n-2N-2	n+1n+1
终端设备11-终端设备15Terminal device 11 - terminal device 15	n-1N-1	n+3n+3

After the base station determines that the scheduling information is sent to the terminal device 1 on the subframe n, the base station determines, according to Table 1, that the states of the subframe n+1 and the subframe n+3 are occupied, and the states of the subframe n+2 and the subframe n+4 are Idle state.

Since the time interval between the subframe n+2 and the subframe n is the duration of two subframes (2 milliseconds), the time interval between the subframe n+4 and the subframe n is the duration of four subframes (4 milliseconds). Therefore, the base station determines the subframe n+2 as the target subframe corresponding to the terminal device 1.

FIG. 6 is a schematic flowchart 2 of a method for a base station to determine a target subframe according to an embodiment of the present invention. Referring to FIG. 6, the method may include:

S601. The base station acquires a resource occupancy rate corresponding to each second subframe, and a time interval between each second subframe and the current subframe.

S602. The base station determines a selection coefficient of each second subframe according to a resource occupancy rate corresponding to each second subframe and a time interval between each second subframe and a current subframe.

S603. The base station determines the second subframe with the smallest selection coefficient as the target subframe.

In the embodiment shown in FIG. 6, after the base station determines that the at least one second subframe is obtained, the base station acquires the resource occupancy rate of each second subframe and the time interval between each second subframe and the current subframe. Optionally, the resource usage of each second subframe may be represented by a number of terminal devices allocated for transmitting the transmission information in the second subframe, and optionally, the resource occupancy of the second subframe. The ratio of the number of terminal devices for transmitting the transmission information to the maximum number of terminal devices for transmitting information that can be allocated to the second subframe may be allocated to the second subframe. For example, suppose that the maximum number of terminal devices for transmitting information that can be allocated to the second subframe is 20, and the number of terminal devices currently allocated to the second subframe for transmitting information is ten. Then, the resource occupancy rate of the second subframe is 0.5.

After the base station acquires the resource occupancy rate of each second subframe and the time interval between each second subframe and the current subframe, the resource occupancy rate corresponding to each second subframe and each second subframe are obtained. The selection coefficient of each second subframe is determined with a time interval between the current subframes. Optionally, for any one of the second subframes, the selection coefficient P of the second subframe may be determined by using the following formula 1:

P=λ ₁ ×Q+λ ₂ ×T Equation 1;

Where λ ₁ is a weighting factor of a resource occupancy rate of the second subframe, Q is a resource occupancy rate of the second subframe, and λ ₂ is a weighting coefficient of a time interval between the second subframe and the current subframe, where T is The time interval between the second subframe and the current subframe.

After the base station acquires the selection coefficients of the respective second subframes, the base station determines the second subframe with the highest selection coefficient as the target subframe.

In the foregoing process, the base station determines the target subframe according to the resource occupancy rate of each second subframe and the time interval between the second subframe and the current subframe, which not only improves the resource utilization rate of the subframe, but also reduces The delay of transmitting information with small feedback.

Hereinafter, the method shown in the embodiment of Fig. 6 will be described in detail by way of a specific example.

Exemplarily, the current subframe is assumed to be subframe n, and the second subframe is subframe n+1, subframe n+2, subframe n+3, and subframe n+4. It is assumed that the resource occupancy rate of each second subframe and the time interval between each second subframe and the current subframe are as shown in Table 2:

Table 2

第二子帧的标识Identification of the second subframe	资源占用率Resource occupancy rate	时间间隔(毫秒)Time interval (milliseconds)
子帧n+1Subframe n+1	0.80.8	11
子帧n+2Subframe n+2	0.30.3	22
子帧n+3Subframe n+3	0.50.5	33
子帧n+4Subframe n+4	00	44

Assuming that the weighting factor of the resource occupancy ratio of the second subframe is 0.2 and the weighting coefficient of the time interval is 0.8, the selection coefficients of the second subframes acquired by the base station are as shown in Table 3:

table 3

第二子帧的标识Identification of the second subframe	选择系数Selection factor
子帧n+1Subframe n+1	0.20.8+0.81＝0.960.20.8+0.81=0.96
子帧n+2Subframe n+2	0.20.3+0.82＝0.220.20.3+0.82=0.22
子帧n+3Subframe n+3	0.20.5+0.83＝0.340.20.5+0.83=0.34
子帧n+4Subframe n+4	0.20+0.84＝0.320.20+0.84=0.32

The base station determines the subframe n+2 with the smallest selection coefficient as the target subframe corresponding to the terminal device 1 according to the selection coefficient of each second subframe shown in Table 3.

On the basis of any of the foregoing embodiments, the base station may generate the first indication information by using the following two possible implementation manners:

A feasible implementation manner: generating first indication information according to the identifier of the target subframe.

In this feasible implementation manner, the base station acquires the identifier of the target subframe, and generates the first indication information according to the identifier of the target subframe, so that the identifier of the target subframe is included in the first indication information.

Correspondingly, after the terminal device receives the first indication information, the terminal device acquires the identifier of the target subframe in the first indication information, and determines the target subframe directly according to the identifier of the target subframe.

Another feasible implementation manner is: acquiring a time interval between the target subframe and the current subframe, and generating first indication information according to the time interval.

In this feasible implementation manner, the base station acquires a time interval between the target subframe and the current subframe, and generates first indication information according to the time interval, so that the first indication information includes a time interval between the target subframe and the current subframe.

Correspondingly, after the terminal device receives the first indication information, the terminal device acquires a time interval in the first indication information, and determines a target subframe according to the current subframe and the time interval, where The time interval between the current subframe and the target subframe is a preset time interval.

On the basis of any of the foregoing embodiments, after the terminal device obtains the target subframe determined by the base station, the terminal device may further detect the target subframe, in order to ensure that the terminal device can normally transmit the transmission information on the target subframe. If the target subframe is in a normal state, the transmission information is sent to the base station on the target subframe. If the target subframe is in an abnormal state, the terminal device requests the first subframe again from the base station. Specifically, please refer to the embodiment shown in FIG. 7.

FIG. 7 is a schematic flowchart of a method for determining a first subframe according to an embodiment of the present invention. Referring to FIG. 7, the method may include:

S701. When the terminal device determines that the state of the target subframe is an abnormal state, the terminal device sends the standby subframe request information to the base station.

S702. The base station determines, according to the spare subframe request information, the first subframe.

S703. The base station sends, to the terminal device, second indication information that is used to indicate the first subframe.

S704. The terminal device determines, according to the second indication information, the first subframe.

S705. The terminal device sends the transmission information to the base station in the first subframe.

In the embodiment shown in FIG. 7, after the terminal device acquires the target subframe determined by the base station, the terminal device acquires the state of the target subframe. Optionally, if the target subframe further includes an available resource, and the available resource is sufficient for the terminal device to send the transmission information in the target subframe, the state of the target subframe is a normal state; if the target subframe does not include The available resources, or the available resources in the target subframe, are insufficient for the terminal device to transmit the transmission information in the target subframe, and the state of the target subframe is an abnormal state.

If the terminal device determines that the state of the target subframe is an available state, the terminal device transmits the transmission information to the base station in the target subframe.

If the terminal device determines that the state of the target subframe is an abnormal state, the terminal device sends the standby subframe request information to the base station. After the base station receives the spare subframe request information, the base station acquires the first subframe. It should be noted that the process of acquiring the first subframe by the base station is similar to the process of acquiring the target subframe by the base station, and details are not described herein.

After the base station acquires the first subframe, the base station generates second indication information for indicating the first subframe, and sends the second indication information to the terminal device. It should be noted that the process of generating the second indication information by the base station is similar to the process of generating the first indication information by the base station, and details are not described herein.

After the terminal device receives the second indication information sent by the base station, the terminal device according to the second finger The indication information determines the first subframe and transmits the transmission information to the base station in the first subframe.

In the above process, after the terminal device acquires the target subframe determined by the base station, the state of the target subframe is also detected. When the state of the target subframe is an abnormal state, the terminal device requests the base station to acquire the first subframe, and sends the transmission information to the base station in the first subframe, thereby improving the reliability of the feedback transmission information.

FIG. 8 is a schematic flowchart 2 of a method for determining a target subframe according to an embodiment of the present invention. Referring to FIG. 8, the method may include:

S801. The terminal device determines at least one second subframe corresponding to the current subframe, where the number of subframes between the second subframe and the current subframe is less than a preset threshold.

S802. The terminal device determines the target subframe in the second subframe according to the state of each second subframe.

In the embodiment shown in FIG. 8, after the terminal device receives the scheduling information sent by the base station in the current subframe, the terminal device determines at least one second subframe corresponding to the current subframe, where the second subframe is located in the current subframe. Thereafter, the number of subframes between the second subframe and the current subframe is less than or equal to a preset threshold. For example, if the current subframe is subframe n, the second subframe is subframe n+1, subframe n+2, subframe n+3, and subframe n+4.

After the terminal device determines the obtained state information of each second subframe, the target subframe is determined in the second subframe according to the state information of each second subframe. Optionally, the terminal device may determine the subframe of the normal state as the target subframe.

In the above process, the terminal device determines the target subframe in the second subframe according to the state of each second subframe, so that the target subframe determined by the terminal device is determined to be a available subframe, so that the terminal device is in the target subframe. The transmission information can be successfully sent to the base station, thereby improving the reliability of the feedback transmission information.

Optionally, after the terminal device determines that the target subframe is obtained, the terminal device may further send, to the base station, the determined identifier of the target subframe, or a time interval between the target subframe and the current subframe, so that the base station determines the subframe. Resource occupancy status.

On the basis of the embodiment shown in FIG. 8, the terminal device can determine the target subframe by the following two feasible implementation manners. Specifically, please refer to the embodiment shown in FIGS. 9-10.

FIG. 9 is a schematic flowchart 1 of a method for determining a target subframe by a terminal device according to an embodiment of the present invention. Referring to FIG. 9, the method may include:

S901. Acquire a state of the Nth second subframe, and between the Nth second subframe and the current subframe. N-1 subframes.

S902. Determine whether the state of the Nth second subframe is a normal state.

If yes, execute S903.

If not, execute S904.

S903. Determine the Nth second subframe as the target subframe, and execute S906.

In S904, N is incremented by 1.

S905. Determine whether N is greater than a preset threshold.

If yes, execute S906.

If not, execute S901.

S906, the process ends.

Where N is a positive integer greater than or equal to 1, and initially, N is equal to 1.

In the embodiment shown in FIG. 9, the second subframe further includes an available resource, and the available resource is sufficient for the terminal device to send the transmission information in the second subframe, and the state of the second subframe is a normal state; If the available resources are not included in the second subframe, or the available resources in the second subframe are insufficient for the terminal device to transmit the transmission information in the second subframe, the state of the second subframe is an abnormal state.

In the actual application process, the terminal device first obtains the state information of the first second subframe. If the first second subframe is in the normal state, the terminal device determines the first second subframe as the target subframe.

If the first second subframe is in an abnormal state, the terminal device continues to acquire the state of the second second subframe, and if the second second subframe is in the normal state, the terminal device uses the second second subframe. Determined as the target subframe.

If the second second subframe is in an abnormal state, the terminal device continues to acquire the state of the third second subframe, and so on, until the terminal device determines that the target subframe is obtained, or N is greater than a preset threshold.

In the above process, as long as the terminal device detects the subframe of the normal state, the subframe of the normal state is determined as the target subframe, so that the terminal device can quickly acquire the target subframe in the normal state, and the target subframe is determined to be improved. effectiveness.

Exemplarily, assuming that the current subframe is a subframe n, and a preset threshold is 4, the second subframe is a subframe n+1, a subframe n+2, a subframe n+3, and a subframe n+4.

The terminal device first acquires the state of the subframe n+1, and if the subframe n+1 is in the normal state, the subframe n+1 is determined as the target subframe.

If the subframe n+1 is in an abnormal state, the terminal device acquires the state of the subframe n+2 again, if the subframe n+2 In the normal state, the subframe n+2 is determined as the target subframe.

If the subframe n+2 is in an abnormal state, the terminal device acquires the state of the subframe n+3, and so on, until the terminal device determines that the target subframe is obtained, or N is greater than 4.

10 is a schematic flowchart 2 of a method for determining a target subframe by a terminal device according to an embodiment of the present invention. Referring to FIG. 10, the method may include:

S1001: Determine, according to a state of each second subframe, a normal subframe set in the second subframe, where states of the subframes in the normal subframe set are all normal states;

S1002: Determine a subframe in the normal subframe set that has the smallest time interval from the current subframe as the target subframe.

In the embodiment shown in FIG. 10, the state of the second subframe is the same as the state of the second subframe described in the embodiment shown in FIG. 9, and details are not described herein.

In the actual application process, after the terminal device determines that the second subframe is obtained, the terminal device acquires the state of each second subframe, and determines a normal subframe set in the second subframe according to the state of each second subframe. The state of each subframe in the normal subframe set is a normal state.

The terminal device acquires a time interval between each second subframe and the current subframe in the normal subframe set, and determines a subframe with the smallest interval as the target subframe.

The terminal device acquires the states of the subframe n+1, the subframe n+2, the subframe n+3, and the subframe n+4, respectively, and determines a normal subframe set according to the state of each second subframe, assuming a normal subframe set. Including: subframe n+2 and subframe n+4.

The terminal device determines that the time interval between the subframe n+2 and the current subframe (2 milliseconds) is less than the time interval between the subframe n+4 and the current subframe (4 milliseconds), and the terminal device determines the subframe n+2 as the target. Subframe.

FIG. 11 is a schematic structural diagram 1 of a terminal device according to an embodiment of the present invention. Referring to FIG. 11, the terminal device may include:

The receiving module 11 is configured to receive scheduling information sent by the base station in the current subframe, where the scheduling information is used to instruct the terminal device to send the transmission information corresponding to the scheduling information to the base station;

a first determining module 12, configured to determine a target subframe for sending the transmission information, where the target subframe is separated from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold;

The sending module 13 is configured to send the determined transmission to the base station on the target subframe. Lose information.

In a possible implementation, the receiving module 11 is further configured to receive first indication information that is sent by the base station, where the first indication information is used to indicate the target subframe.

Correspondingly, the first determining module 12 is specifically configured to determine the target subframe according to the first indication information.

Correspondingly, the first determining module 12 is specifically configured to determine the target subframe according to the identifier of the target subframe.

Correspondingly, the first determining module 12 is specifically configured to determine, according to the current subframe and the preset time interval, the target subframe, where the current subframe and the target subframe are between The time interval is the preset time interval.

FIG. 12 is a schematic structural diagram of a terminal device according to an embodiment of the present invention. On the basis of the embodiment shown in FIG. 11, the terminal device further includes a determining module 14 and a second determining module 15, where

The determining module 14 is configured to determine, after the first determining module 12 determines the target subframe according to the first indication information, whether the state of the target subframe is a normal state;

The second determining module 15 is configured to determine the first subframe when the determining module 14 determines that the state of the target subframe is not a normal state;

Correspondingly, the sending module 13 is specifically configured to send the transmission information in the first subframe.

In another possible implementation, the sending module 13 is further configured to send the standby subframe request information to the base station;

The receiving module 11 is further configured to receive second indication information that is sent by the base station, where the second indication information is used to indicate the first subframe.

Correspondingly, the second determining module 15 is specifically configured to determine the first subframe according to the second indication information.

In another possible implementation manner, the first determining module 12 includes a first determining unit 121 and a second determining unit 122, where

The first determining unit 121 is configured to determine at least one second subframe corresponding to the current subframe, where the number of subframes between the second subframe and the current subframe is smaller than the preset Threshold value

The second determining unit 122 is configured to determine a target subframe in the second subframe according to a state of each of the second subframes.

In another possible implementation manner, the second determining unit 122 is specifically configured to:

Obtaining a state of the Nth second subframe, where the Nth second subframe and the current subframe are separated by N-1 subframes;

If the state of the Nth second subframe is an abnormal state, the N is incremented by 1, and the foregoing process is repeatedly performed until it is determined that the target subframe is obtained;

The N is a positive integer less than or equal to the preset threshold. Initially, the N is equal to 1.

Determining, according to a state of each of the second subframes, a normal subframe set in the second subframe, where states of each subframe in the normal subframe set are normal states;

FIG. 13 is a schematic structural diagram 1 of a base station according to an embodiment of the present invention. Referring to FIG. 13, the base station may include:

The first obtaining module 21 is configured to acquire, after the scheduling information is sent to the terminal device in the current subframe, the at least one second subframe corresponding to the current subframe, where the second subframe and the current subframe are Interval k subframes, where k is a positive integer less than a preset threshold;

a first determining module 22, configured to determine a target subframe in the at least one second subframe;

The sending module 23 is configured to send, to the terminal device, first indication information that is used to indicate the target subframe.

FIG. 14 is a schematic structural diagram 2 of a base station according to an embodiment of the present disclosure. On the basis of the embodiment shown in FIG. 14, referring to FIG. 14, the first determining module 22 includes a first determining unit 221 and a second determining unit 222. ,among them,

The first determining unit 221 is configured to determine, in the at least one second subframe, an idle subframe, where the idle subframe is a subframe that is not allocated for transmitting the transmission information;

The second determining unit 222 is configured to determine the idle subframe as the target subframe.

In a possible implementation, the second determining unit 222 is specifically configured to:

Obtaining the number of the idle subframes;

If the number of the idle subframes is 1, determining the idle subframe as the target subframe;

If the number of the idle subframes is greater than 1, the subframe in the idle subframe that is the smallest time interval from the current subframe is determined as the target subframe.

In another possible implementation manner, the first determining module 22 is specifically configured to:

Obtaining a resource occupancy rate corresponding to each of the second subframes, and a time interval between each of the second subframes and the current subframe;

Determining a selection coefficient of each of the second subframes according to a resource occupancy rate of each of the second subframes and a time interval between each of the second subframes and the current subframe;

A second subframe having the smallest selection coefficient is determined as the target subframe.

In another possible implementation manner, the base station further includes a generating module 24, where

The generating module 24 is configured to generate the first indication information according to the identifier of the target subframe;

Correspondingly, the sending module 23 is specifically configured to send the first indication information to the terminal device.

In another possible implementation manner, the base station further includes a second acquiring module 25, where

The second obtaining module 25 is configured to acquire a time interval between the target subframe and the current subframe.

Correspondingly, the generating module 24 is further configured to generate the first indication information according to the time interval;

The sending module 23 is specifically configured to send the first indication information to the terminal device.

In another possible implementation, the base station further includes a receiving module 26 and a second determining module 27, where

The receiving module 26 is configured to: after the sending module 23 sends the first indication information for indicating the target subframe to the terminal device, receive the standby subframe request information sent by the terminal device;

The second determining module 27 is configured to determine, according to the spare subframe request information, a first subframe;

FIG. 15 is a schematic structural diagram of hardware of a terminal device according to an embodiment of the present invention. Referring to FIG. 15, the terminal device includes a processor 31, a receiver 32, a transmitter 33, a memory 34, and a communication bus 35. The memory 34 is for storing an application, the communication bus 35 is for implementing a communication connection between the elements, and the processor 31 can execute an application in the memory 33, wherein

The receiver 32 is configured to receive scheduling information sent by the base station in the current subframe, where the scheduling information is used to instruct the terminal device to send the transmission information corresponding to the scheduling information to the base station;

The processor 31 is configured to determine a target subframe for sending the transmission information, where the target subframe is separated from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold;

The transmitter 33 is configured to send the determined transmission information to the base station on the target subframe.

In a possible implementation, the processor 31 is specifically configured to:

The receiver 32 is further configured to receive first indication information that is sent by the base station, where the first indication information is used to indicate the target subframe.

Correspondingly, the processor 31 is specifically configured to determine the target subframe according to the first indication information.

Correspondingly, the processor 31 is specifically configured to determine, according to the identifier of the target subframe, the Target subframe.

Correspondingly, the processor 31 is configured to determine, according to the current subframe and the preset time interval, the target subframe, where a time interval between the current subframe and the target subframe For the preset time interval.

In another possible implementation manner, after the processor 31 determines the target subframe according to the first indication information, the processor 31 is further configured to:

Determining whether the state of the target subframe is a normal state;

In another possible implementation manner, the transmitter 33 is further configured to send the standby subframe request information to the base station;

The receiver 32 is further configured to receive second indication information that is sent by the base station, where the second indication information is used to indicate the first subframe;

Determining the first subframe according to the second indication information.

In another possible implementation, the processor 31 is specifically configured to:

Determining at least one second subframe corresponding to the current subframe, where the number of subframes between the second subframe and the current subframe is less than the preset threshold;

Determining a target subframe in the second subframe according to a state of each of the second subframes.

Determining a normal subframe set in the second subframe according to a state of each of the second subframes, where The states of the subframes in the normal subframe set are all normal states;

FIG. 16 is a schematic diagram of a hardware structure of a base station according to an embodiment of the present invention. Referring to FIG. 16, the terminal device includes a processor 41, a transmitter 42, a memory 43, and a communication bus 44. The memory 43 is used to store an application, the communication bus 44 is used to implement a communication connection between the components, and the processor 41 is configured to execute an application in the memory 43, wherein

The processor 41 is configured to: after determining to send scheduling information to the terminal device in the current subframe, acquire at least one second subframe corresponding to the current subframe, where the second subframe and the current subframe Interval k subframes, where k is a positive integer less than a preset threshold;

The processor 41 is further configured to determine a target subframe in the at least one second subframe;

The transmitter 42 is configured to send, to the terminal device, first indication information used to indicate the target subframe.

In a possible implementation, the processor 41 is specifically configured to:

The idle subframe is determined as the target subframe.

In another possible implementation, the processor 41 is specifically configured to:

Obtaining the number of the idle subframes;

In another possible implementation manner, the processor 41 is specifically configured to: acquire a resource occupancy rate corresponding to each of the second subframes, and between each of the second subframes and the current subframe. time interval;

In another possible implementation, the processor 41 is specifically configured to generate the first indication information according to the identifier of the target subframe.

Correspondingly, the transmitter 42 is further configured to send the first indication information to the terminal device.

In another possible implementation, the processor 41 is specifically configured to acquire a time interval between the target subframe and the current subframe, and generate the first indication information according to the time interval.

The transmitter 42 is specifically configured to send the first indication information to the terminal device.

FIG. 17 is a second schematic structural diagram of a hardware structure of a base station according to an embodiment of the present invention. Referring to FIG. 17, the base station further includes a receiver 45, where

The receiver 45 is configured to receive standby subframe request information sent by the terminal device;

The processor 41 is further configured to determine, according to the spare subframe request information, a first subframe;

The transmitter 42 is further configured to send, to the terminal device, second indication information that is used to indicate the first subframe.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

An information feedback method is characterized in that it is applied to a terminal device, and the method includes:

Receiving scheduling information sent by the base station, where the scheduling information is used to indicate that the terminal device sends the transmission information corresponding to the scheduling information to the base station;

Determining a target subframe for transmitting the transmission information, where the target subframe is separated from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold;

And transmitting the determined transmission information to the base station on the target subframe.
The method according to claim 1, wherein the determining a target subframe for transmitting the transmission information comprises:

Receiving, by the base station, first indication information, where the first indication information is used to indicate the target subframe;

Determining the target subframe according to the first indication information.
The method according to claim 1 or 2, wherein after determining the target subframe according to the first indication information, the method further includes:

Determining whether the state of the target subframe is a normal state;

If the judgment result is no, the first subframe is determined;

Correspondingly, the sending, by the base station, the determined transmission information to the base station, including:

Transmitting the transmission information in the first subframe.
The method according to claim 3, wherein determining the first subframe comprises:

Sending spare subframe request information to the base station;

Receiving, by the base station, second indication information, where the second indication information is used to indicate the first subframe;

Determining the first subframe according to the second indication information.
The method according to claim 1, wherein the determining a target subframe for transmitting the transmission information comprises:

Determining at least one second subframe corresponding to the current subframe, where the number of subframes between the second subframe and the current subframe is less than the preset threshold;

Determining a target subframe in the second subframe according to a state of each of the second subframes.
The method according to claim 5, wherein said according to said each of said second subframes a state in which the target subframe is determined in the second subframe, including:

Obtaining a state of the Nth second subframe, where the Nth second subframe and the current subframe are separated by N-1 subframes;

If the state of the Nth second subframe is a normal state, determining the Nth second subframe as the target subframe;

If the state of the Nth second subframe is an abnormal state, the N is incremented by 1, and the foregoing process is repeatedly performed until it is determined that the target subframe is obtained;

The N is a positive integer less than or equal to the preset threshold. Initially, the N is equal to 1.
The method according to claim 5, wherein the determining the target subframe in the second subframe according to the state information of each of the second subframes comprises:

Determining, according to a state of each of the second subframes, a normal subframe set in the second subframe, where states of each subframe in the normal subframe set are normal states;

A subframe in the normal subframe set that has the smallest time interval from the current subframe is determined as the target subframe.
An information feedback method is characterized in that it is applied to a base station, and the method includes:

After determining that the scheduling information is sent to the terminal device on the current subframe, acquiring at least one second subframe corresponding to the current subframe, and spacing the subframe between the second subframe and the current subframe by using a subframe Said k is a positive integer less than a preset threshold;

Determining a target subframe in the at least one second subframe;

Sending, to the terminal device, first indication information indicating the target subframe.
The method according to claim 8, wherein determining the target subframe in the at least one second subframe comprises:

Determining an idle subframe in the at least one second subframe, the idle subframe being a subframe that is not allocated for transmitting the transmission information;

The idle subframe is determined as the target subframe.
The method according to claim 9, wherein the determining the idle subframe as the target subframe comprises:

Obtaining the number of the idle subframes;

If the number of the idle subframes is 1, determining the idle subframe as the target subframe;

If the number of the idle subframes is greater than 1, the subframe in the idle subframe that is the smallest time interval from the current subframe is determined as the target subframe.
The method according to claim 8, wherein determining the target subframe in the at least one second subframe comprises:

Obtaining a resource occupancy rate corresponding to each of the second subframes, and a time interval between each of the second subframes and the current subframe;

Determining a selection coefficient of each of the second subframes according to a resource occupancy rate of each of the second subframes and a time interval between each of the second subframes and the current subframe;

A second subframe having the smallest selection coefficient is determined as the target subframe.
The method according to any one of claims 8 to 11, wherein after the first indication information for indicating the target subframe is sent to the terminal device, the method further includes:

Receiving spare subframe request information sent by the terminal device;

Determining, according to the spare subframe request information, a first subframe;

Sending, to the terminal device, second indication information for indicating the first subframe.
A terminal device, comprising:

a receiving module, configured to receive scheduling information sent by the base station in the current subframe, where the scheduling information is used to instruct the terminal device to send the transmission information corresponding to the scheduling information to the base station;

a first determining module, configured to determine a target subframe for sending the transmission information, where the target subframe is separated from the current subframe by k subframes, where k is a positive integer smaller than a preset threshold;

And a sending module, configured to send, by using the target subframe, the determined transmission information to the base station.
The terminal device according to claim 13, wherein

The receiving module is further configured to receive first indication information that is sent by the base station, where the first indication information is used to indicate the target subframe;

Correspondingly, the first determining module is specifically configured to determine the target subframe according to the first indication information.
The terminal device according to claim 13 or 14, wherein the terminal device further comprises a determining module and a second determining module, wherein

The determining module is configured to determine, after the first determining module determines the target subframe according to the first indication information, whether the state of the target subframe is a normal state;

The second determining module is configured to: when the determining module determines that the state of the target subframe is not a normal state, determine the first subframe;

Correspondingly, the sending module is specifically configured to send the transmission information in the first subframe.
The terminal device according to claim 15, wherein

The sending module is further configured to send standby subframe request information to the base station;

The receiving module is further configured to receive second indication information that is sent by the base station, where the second indication information is used to indicate the first subframe;

Correspondingly, the second determining module is specifically configured to determine the first subframe according to the second indication information.
The terminal device according to claim 13, wherein the first determining module comprises a first determining unit and a second determining unit, wherein

The first determining unit is configured to determine at least one second subframe corresponding to the current subframe, where the number of subframes between the second subframe and the current subframe is smaller than the preset threshold. ;

The second determining unit is configured to determine a target subframe in the second subframe according to a state of each of the second subframes.
The terminal device according to claim 17, wherein the second determining unit is specifically configured to:

Obtaining a state of the Nth second subframe, where the Nth second subframe and the current subframe are separated by N-1 subframes;

If the state of the Nth second subframe is a normal state, determining the Nth second subframe as the target subframe;

If the state of the Nth second subframe is an abnormal state, the N is incremented by 1, and the foregoing process is repeatedly performed until it is determined that the target subframe is obtained;

The N is a positive integer less than or equal to the preset threshold. Initially, the N is equal to 1.
The terminal device according to claim 17, wherein the second determining unit is specifically configured to:

Determining, according to a state of each of the second subframes, a normal subframe set in the second subframe, where states of each subframe in the normal subframe set are normal states;

Determining a subframe in the normal subframe set that has a minimum time interval from the current subframe Is the target subframe.
A base station, comprising:

a first acquiring module, configured to acquire at least one second subframe corresponding to the current subframe, and the second subframe and the current subframe after determining that the scheduling information is sent to the terminal device in the current subframe Interval k subframes, where k is a positive integer less than a preset threshold;

a first determining module, configured to determine a target subframe in the at least one second subframe;

And a sending module, configured to send, to the terminal device, first indication information used to indicate the target subframe.
The base station according to claim 20, wherein the first determining module comprises a first determining unit and a second determining unit, wherein

The first determining unit is configured to determine, in the at least one second subframe, an idle subframe, where the idle subframe is a subframe that is not allocated for transmitting the transmission information;

The second determining unit is configured to determine the idle subframe as the target subframe.
The base station according to claim 21, wherein the second determining unit is specifically configured to:

Obtaining the number of the idle subframes;

If the number of the idle subframes is 1, determining the idle subframe as the target subframe;

If the number of the idle subframes is greater than 1, the subframe in the idle subframe that is the smallest time interval from the current subframe is determined as the target subframe.
The base station according to claim 20, wherein the first determining module is specifically configured to:

Obtaining a resource occupancy rate corresponding to each of the second subframes, and a time interval between each of the second subframes and the current subframe;

Determining a selection coefficient of each of the second subframes according to a resource occupancy rate of each of the second subframes and a time interval between each of the second subframes and the current subframe;

A second subframe having the smallest selection coefficient is determined as the target subframe.
The base station according to any one of claims 20 to 23, wherein the base station further comprises a receiving module and a second determining module, wherein

The receiving module is configured to: after the sending module sends the first indication information for indicating the target subframe to the terminal device, receive the standby subframe request information sent by the terminal device;

The second determining module is configured to determine, according to the spare subframe request information, a first subframe;

The sending module is further configured to send, to the terminal device, second indication information that is used to indicate the first subframe.