WO2018166392A1

WO2018166392A1 - Frame structure determining method and base station

Info

Publication number: WO2018166392A1
Application number: PCT/CN2018/078386
Authority: WO
Inventors: 孙立新; 丁颖哲; 周明宇; 王力
Original assignee: 北京佰才邦技术有限公司
Priority date: 2017-03-14
Filing date: 2018-03-08
Publication date: 2018-09-20
Also published as: CN106851839A; CN106851839B

Abstract

Provided in the present application are a frame structure determining method and a base station, the frame structure determining method comprising: acquiring uplink control information issued by a terminal; on the basis of the transmission parameters in the uplink control information, determining the frame structure of the communication transmission, the frame structure comprising the start position and end position of data uplink transmission of the terminal in a maximum channel occupation duration, the start position of the data downlink transmission of the base station in a maximum channel occupation duration, and the maximum channel occupation duration. By means of the technical solution in the present application, uplink control information can be issued by the terminal for scheduling, and the base station can acquire the complete frame structure on the basis of the uplink control information issued by the terminal, and directly perform downlink transmission in the uplink transmission channel occupation duration, reducing latency, and thereby improving the LBT success rate.

Description

Frame structure determination method and base station

The present application claims the priority of the Chinese Patent Application, the entire disclosure of which is hereby incorporated by reference.

Technical field

The present application relates to the field of communications technologies, and in particular, to a frame structure determining method and a base station.

Background technique

The MulteFire technology is a radio access technology that extends LTE (Long Term Evolution) to an unlicensed band. In this technology, an unlicensed band carrier can provide independent services without using a licensed band carrier.

At present, a Wi-Fi-like carrier is introduced at the physical layer of the MF (MulteFire) in order to enable a plurality of unlicensed band devices (such as Wi-Fi devices) to occupy the unlicensed band channels fairly and avoid mutual interference between devices in the unlicensed band. The LBT (Listen Before Talk) mechanism of the monitoring technology shall not transmit a signal when the base station or the terminal monitors that the unlicensed band channel is occupied, that is, when the LBT fails, when the unlicensed band channel is idle, The signal is sent only when the LBT is successful.

In the related art, LTE generally adopts a base station-centric centralized scheduling. For uplink transmission of a UE (user equipment), the UE needs to initiate a scheduling request first, and then waits for uplink scheduling of the base station to send an uplink transmission, and each of them Before the signal is transmitted, the base station or the UE that is the transmitting end needs to perform LBT (Listen Before Talk), which increases the delay and reduces the success rate of the LBT, thereby causing the uplink transmission based on the base station scheduling to occur in the transmission of the unlicensed band. Performance such as uplink throughput and latency degradation.

Therefore, how to provide a more effective communication method has become a technical problem that needs to be solved urgently.

Application content

The embodiment of the present application provides a frame structure determining method and a base station, which can provide a more effective communication mode, so that the base station can accurately determine the maximum channel occupation duration and its internality on the basis of the terminal autonomously scheduling uplink transmission. The frame structure is convenient for the base station to determine the starting position of the downlink transmission.

In a first aspect, the embodiment of the present application provides a method for determining a frame structure, including: acquiring uplink control information advertised by a terminal; and determining a frame structure of the communication transmission according to a transmission parameter in the uplink control information, where the frame is The structure includes a start position and a stop position of the data uplink transmission by the terminal during the maximum channel occupation duration, a start position of the data downlink transmission and a maximum channel occupation duration of the base station in the maximum channel occupation duration.

In the foregoing embodiment of the present application, optionally, the step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information includes: performing uplink transmission of data according to the uplink control information. The starting position indication, the number of occupied subframes, the position of the occupied subframe, the subframe interval configuration, and the total length of the transmission occupation, determining the starting position and stopping of the data uplink transmission in the maximum channel occupation time of the terminal position.

In the foregoing embodiment of the present application, optionally, the uplink transmission may also be a re-upload transmission after the downlink transmission.

In the foregoing embodiment of the present application, optionally, the step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information further includes: performing, according to the terminal, the duration of the maximum channel occupation period a stop position of the data uplink transmission, determining a first possible starting position of the downlink transmission; initiating an LBT at the first possible starting position; and determining, when the LBT is successful, determining the first possible starting position as the performing data a starting position of the downlink transmission; when the LBT fails, selecting a second possible starting position after the first possible starting position to initiate the LBT, until the LBT is successful, determining the location of the LBT that can be successfully initiated as the performing The starting position of the data downlink transmission, wherein the LBT within the maximum channel occupation duration of the terminal may be different from the type and/or parameter of the LBT outside the maximum channel occupation duration of the terminal.

In the foregoing embodiment of the present application, optionally, the uplink control information of the terminal is one, and all the transmission parameters are carried; or the uplink control information of the terminal is multiple, where each of the uplink control information is Carrying all the transmission parameters, or each of the uplink control information carries a corresponding partial transmission parameter.

In the foregoing embodiment of the present application, optionally, the transmission parameter in the uplink control information includes a maximum channel occupation duration.

In the foregoing embodiment of the present application, optionally, the transmission parameter in the uplink control information further includes a length of a preamble signal for performing uplink transmission.

In the foregoing embodiment of the present application, optionally, the step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information includes: acquiring an extended channel occupation duration in the uplink control information, where As the maximum channel occupation time.

In the foregoing embodiment of the present application, optionally, the step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information includes: acquiring an unexpanded first channel in the uplink control information Taking a long time; determining whether a first time interval greater than or equal to a predetermined interval occurs for the first time in the initial channel occupation duration; and when the first time interval greater than or equal to the predetermined interval is determined to occur for the first time, the first time is The channel occupant duration is extended to the second channel occupant duration, where the time when the first time interval occurs for the first time is the downlink transmission of the terminal, the downlink transmission is performed with the base station, and the uplink transmission is performed. And between the uplink transmission and the downlink transmission of the terminal or the downlink transmission again.

In the foregoing embodiment of the present application, optionally, the step of acquiring the uplink control information advertised by the terminal includes: acquiring multiple uplink control information that is sent by multiple terminals; and according to the transmission parameter in the uplink control information, Determining a frame structure of the communication transmission, comprising: determining, according to the plurality of uplink control information, a frame structure of a communication transmission corresponding to a terminal to which each uplink control information belongs; and a frame structure of a corresponding communication transmission of the multiple terminals The union of the frames as the final communication transmission.

In a second aspect, the embodiment of the present application provides a base station, including: an uplink control information acquiring unit, which acquires uplink control information advertised by a terminal, and a frame structure determining unit that determines a communication transmission according to a transmission parameter in the uplink control information. a frame structure, where the frame structure includes a start position and a stop position of the data uplink transmission of the terminal during the maximum channel occupation duration, and a start position of the data downlink transmission performed by the base station in the maximum channel occupation duration And the maximum channel occupancy time.

In the foregoing embodiment of the present application, optionally, the frame structure determining unit includes: an uplink start and stop position determining unit, according to the initial position indication of the data uplink transmission in the uplink control information, the number of occupied subframes, The position of the occupied subframe, the configuration of the subframe interval, and the total length of the transmission occupying are determined, and the starting position and the stopping position of the uplink transmission of the data in the maximum channel occupation duration of the terminal are determined.

In the foregoing embodiment of the present application, optionally, the frame structure determining unit further includes: a downlink start position determining unit, determining, according to the stop position of the data uplink transmission in the maximum channel occupation time of the terminal, determining the downlink a first possible starting position of the transmission, and initiating an LBT at the first possible starting position, wherein when the LBT is successful, determining the first possible starting position as the starting position of the data downlink transmission And when the LBT fails, the second possible starting position after the first possible starting position is selected to initiate the LBT, and when the LBT is successful, the location where the LBT can be successfully initiated is determined as the data downlink transmission. Starting position. The LBT in the maximum channel occupation duration of the terminal may be different from the type and/or parameter of the LBT outside the maximum channel occupation duration of the terminal.

In the foregoing embodiment of the present application, optionally, the frame structure determining unit includes: a maximum channel occupation duration determining unit, and acquiring an extended channel occupation duration in the uplink control information, as the maximum channel occupation duration.

In the foregoing embodiment of the present application, optionally, the frame structure determining unit includes: a maximum channel occupation duration determining unit, acquiring an unexpanded first channel occupation duration in the uplink control information, and determining the initial channel. Whether a first time interval greater than or equal to a predetermined interval occurs for the first time in the occupation time period; when it is determined that the first time interval greater than or equal to the predetermined interval occurs for the first time, the first channel occupation time length is extended to the second channel The duration of the first time interval, wherein the first time interval is the downlink transmission of the terminal, the downlink transmission is performed with the base station, the uplink transmission, the uplink transmission, and the uplink transmission Between the downlink transmissions of the terminal or the downlink transmission again.

In the foregoing embodiment of the present application, the uplink control information acquiring unit is configured to: acquire multiple uplink control information that is sent by multiple terminals; and the frame structure determining unit is configured to: according to the multiple uplinks Controlling information, determining a frame structure of the communication transmission corresponding to the terminal to which each uplink control information belongs, and using the union of the frame structures of the corresponding communication transmissions of the plurality of terminals as the frame structure of the final communication transmission.

In a third aspect, an embodiment of the present application provides a base station, including a transmitter, a receiver, a memory, and a processor respectively connected to a transmitter, a receiver, and a memory, where the receiver is configured to acquire an uplink control issued by the terminal. Information; the memory stores instructions executable by the processor, and the processor is configured to invoke the instructions stored by the memory, and perform the following operations: determining communication transmission according to transmission parameters in the uplink control information a frame structure, where the frame structure includes a start position and a stop position of the data uplink transmission of the terminal during the maximum channel occupation duration, and a start of data downlink transmission by the base station within the maximum channel occupation duration Location and maximum channel occupancy time.

In a fourth aspect, an embodiment of the present application provides a non-transitory computer readable storage medium, where the non-transitory computer readable storage medium stores computer instructions, where the computer instructions are used to cause the computer to perform any of the foregoing Frame structure determination method.

In the above technical solution, for a series of problems caused by the base station-centric centralized scheduling in the related art, the terminal may issue uplink control information for scheduling, so that the base station may determine the maximum channel occupation according to the uplink control information advertised by the terminal. The duration and the starting position and stopping position of the uplink transmission and the starting position of the downlink transmission acquire a complete frame structure, simplify the work of the base station, and reduce the delay, thereby improving the success rate of the LBT.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application. One of ordinary skill in the art can also obtain other drawings based on these drawings without paying for inventive labor.

FIG. 1 shows a flow chart of a frame structure determining method according to an embodiment of the present application;

2 is a diagram showing a frame structure distribution of a channel occupation duration in the embodiment shown in FIG. 1;

Figure 3 shows a block diagram of a base station in accordance with one embodiment of the present application;

4 shows a block diagram of a base station in accordance with another embodiment of the present application.

detailed description

For a better understanding of the technical solutions of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The terms used in the embodiments of the present application are for the purpose of describing particular embodiments only and are not intended to limit the application. The singular forms "a", "the", and "the"

FIG. 1 shows a flow chart of a frame structure determining method according to an embodiment of the present application.

As shown in FIG. 1, the frame structure determining method includes:

Step 102: Acquire uplink control information advertised by the terminal.

Step 104: Determine a frame structure of the communication transmission according to the transmission parameter in the uplink control information.

The frame structure includes a start position and a stop position of the data uplink transmission in the maximum channel occupation time, a start position of the data downlink transmission and a maximum channel occupation duration in the maximum channel occupation time length of the base station.

Therefore, the terminal can issue uplink control information for scheduling, so that the base station can determine the maximum channel occupation duration, the start position and the stop position of the uplink transmission, and the start position of the downlink transmission according to the uplink control information issued by the terminal, and obtain The complete frame structure directly performs downlink transmission during the channel occupancy time of the uplink transmission, thereby reducing the delay, thereby improving the success rate of the LBT.

In an implementation manner of this embodiment, the step 104 includes: performing, according to the uplink control information, a start position indication, a number of occupied subframes, a position of the occupied subframe, and a subframe interval configuration and transmission. The total length of the occupation determines the start position and stop position of the data uplink transmission of the terminal within the maximum channel occupation time.

That is, the transmission parameters in the uplink control information may include a start position indication for performing data uplink transmission, a number of occupied subframes, a position of the occupied subframe, a subframe interval configuration, and a total length of the transmission occupation, and the like. The transmission parameter, the base station can determine the starting position and the stopping position of the data uplink transmission of the terminal, thereby facilitating further determining the starting position of the downlink transmission and the maximum channel occupation duration.

It should be added that the terminal may carry the transmission parameters in any one or more of the released uplink control information, the DMRS (Demodulation Reference Signal) sequence and the preamble sequence, so that the base station performs acquisition or detection. The carried transmission parameter may further include a length of the preamble signal for performing uplink transmission, so that the base station subtracts the length of the preamble signal for performing uplink transmission before the computing terminal performs the initial position and the stop position of the data uplink transmission, so as to obtain more accurate. The terminal performs the start position and the stop position of the data uplink transmission.

In an implementation manner of this embodiment, the uplink transmission may also be a re-upload transmission after the downlink transmission. In other words, if the uplink transmission of the terminal and the base station and the downlink transmission of the base station to the terminal are completed within the time interval of the channel corresponding to the total uplink transmission, the uplink transmission of the terminal and the base station may also be initiated, and the uplink transmission is performed again. The starting position and the stopping position are also determined by the uplink control information of the terminal and/or the downlink control information of the base station.

In an implementation manner of this embodiment, the uplink control information of the terminal is one, and all the transmission parameters are carried.

In an implementation manner of this embodiment, the uplink control information of the terminal is multiple, where each uplink control information carries all transmission parameters, so that when a single uplink control information is issued or received, It can ensure that other backups are released by the terminal or received by the base station, which improves the effectiveness of the communication. Alternatively, each uplink control information carries a corresponding partial transmission parameter.

In an implementation manner of this embodiment, if multiple terminals issue multiple uplink control information, the frame structure of the communication transmission corresponding to the terminal to which each uplink control information belongs may be determined, and the corresponding terminals of the multiple terminals are The union of the frame structures of the communication transmission (i.e., the maximum occupied duration after merging) is taken as the frame structure of the final communication transmission. Optionally, the frame structure of the final communication transmission may also be determined according to uplink control information of one of the terminals.

In an implementation manner of the embodiment, the transmission parameter in the uplink control information includes the extended channel occupation duration, that is, the maximum channel occupation duration, so that the base station can directly obtain the maximum channel occupation duration, and further determine whether the channel is required. The length of time is extended.

In an implementation manner of this embodiment, acquiring an unexpanded first channel occupation duration in the uplink control information, and determining whether a first time interval greater than or equal to a predetermined interval occurs for the first time in the initial channel occupation duration When it is determined that the first time interval greater than or equal to the predetermined interval occurs for the first time, the first channel occupation duration is extended to the second channel occupation duration, wherein the first time interval of the first time interval is In the downlink transmission of the terminal, between the downlink transmission and the uplink transmission by the base station, in the uplink transmission, between the uplink transmission and the downlink transmission of the terminal, or in the downlink transmission again.

The above implementation manner will be described in detail below in conjunction with specific scenarios.

The eNB (radio resource control) can notify the terminal whether other technologies share the current carrier, and the terminal can determine the MCOT (the maximum channel occupation duration) according to the notification.

If the presenceOfAnyOtherTechnology-r14 is true, it means that no other technology shares the current carrier. In this case, when the channel access priority is 3 or 4, the length of the MCOT (maximum channel occupation duration) is 10 ms. Otherwise, the absenceOfAnyOtherTechnology-r14 is not True (for example, when the indication is not sent), indicating that other technologies share the current carrier. When the channel access priority is 3 or 4, the MCOT length is 6 ms.

Therefore, the terminal can indicate the channel access priority in the uplink control information (for example, G-UCI). For example, the 2-bit corresponds to 1, 2, 3, and 4 to check the table 1 to obtain the corresponding MCOT, and 3 or 4 pairs. There is no difference in MCOT, so there is no distinction.

Table 1

Alternatively, the terminal may directly length the MCOT in the uplink control information, for example, 2-bit: 2ms, 3ms, 6ms, 10ms. Specifically, when the terminal can determine that the current channel has other technology sharing channels and the channel access priority is 3 or 4, and the MCOT is extended from 6 ms to 8 ms, the uplink control information can notify the length of the MCOT or Notification channel access priority

An example of notifying the length of the MCOT is as follows:

When the absenceOfAnyOtherTechnology-r14 is not sent, 2-bit: 2ms, 3ms, 6ms, 8ms; when the absenceOfAnyOtherTechnology-r14 is sent, 2-bit: 2ms, 3ms, 10ms, NA/10ms.

An example of notifying the channel access priority is as follows:

When absenceOfAnyOtherTechnology-r14 is not sent, 2-bit: 1, 2, 3 or 4, 3 or 4 is extended to 8ms MCOT; when absenceOfAnyOtherTechnology-r14 is sent, 2-bit: 1, 2, 3, 4. Of these, 3 or 4 are indistinguishable from MCOT, so no distinction can be made.

In addition, based on the foregoing notification, the base station may further determine, according to one or more of a start position, a termination position, and an earliest start position of the uplink transmission in the uplink control information, whether the MCOT is satisfied from 6 ms. Expand to 8ms conditions. The condition that the MCOT is extended from 6 ms to 8 ms is that there is an interval greater than 100 μs in a time no longer than 6 ms. Here, the first predetermined channel occupation time is 6 ms, the second predetermined channel occupation time is 8 ms, and the predetermined interval is 100 μs. .

Further, when the absenceOfAnyOtherTechnology-r14 is not sent, if the channel access priority adopted by the terminal is 3 or 4, and the first predetermined channel occupation time does not satisfy the condition that the MCOT is extended from 6 ms to 8 ms (ie, does not exist) When the interval is greater than 100 μs, the base station determines whether to extend the MCOT from 6 ms to 8 ms according to whether the interval between the uplink transmission and the downlink transmission (such as the interval caused by the LBT) satisfies greater than 100 μs. If the uplink transmission of the terminal and the base station and the downlink transmission of the base station to the terminal are completed within the time interval of the channel corresponding to the total uplink transmission, the uplink transmission between the terminal and the base station may also be initiated. Therefore, the base station may further The condition of whether the extended channel occupation time is satisfied is determined according to the time interval of the downlink transmission and the uplink transmission again, and the time interval in the uplink transmission process.

For example, when the absenceOfAnyOtherTechnology-r14 is not sent, the information indicated by the uplink control information includes: the channel access priority is 3, the uplink transmission takes 4 ms, and there is no interval greater than 100 μs in the middle, and the base station is requested to send the downlink signal in the remaining MCOT. If the base station starts to transmit downlink in the second slot of the 5th ms after the channel access succeeds, the interval between the uplink transmission and the downlink transmission is greater than 100 μs, and it can be determined that the MCOT is extended to 8 ms. If the base station starts to transmit downlink in the first slot of the 5th ms, the interval between the uplink transmission and the downlink transmission is less than 100 μs, and it can be determined that the MCOT is maintained for 6 ms.

In an implementation manner of this embodiment, the step 104 further includes: determining, according to the stopping position of the data uplink transmission in the maximum channel occupation time, determining the first possible starting position of the downlink transmission; at the first possible starting position Initiating LBT; when the LBT is successful, determining the first possible starting position as the starting position for performing data downlink transmission; when the LBT fails, selecting the second possible starting position after the first possible starting position to initiate the LBT, The location of the LBT that can be successfully initiated until the LBT is successful is determined as the starting position of the data downlink transmission, wherein the LBT in the terminal is in the maximum channel occupation duration and the maximum channel occupation time in the terminal. The type and/or parameters of the external LBT can vary.

For example, when the base station determines that the earliest possible downlink transmission position is at the subframe (starting) boundary of the subframe N of the first possible starting position, the base station may first try to perform the LBT before the subframe boundary of the subframe N, and when the LBT succeeds, Initiating a downlink transmission at a subframe boundary of the subframe N, and attempting to perform LBT at the next possible downlink transmission location when the LBT is unsuccessful, and the next possible downlink transmission location may be a boundary or a subframe of the second slot of the subframe N. Any position such as the starting boundary of N+1.

In addition, the indication manner that the terminal indicates that the downlink transmission is the starting position in the uplink control information may include the following implementation manners:

1. The downlink starting position indicated by the terminal, and the base station starts downlink transmission at the indicated location;

2. The downlink starting position indicated by the terminal, and the base station starts downlink transmission within the window length starting from the indicated downlink position;

3. The terminal only indicates the duration of the downlink request and the uplink transmission, and the base station determines the downlink starting position according to the ending position of the uplink transmission;

4. The terminal only indicates the duration of the downlink request and the uplink transmission, and the base station determines the downlink starting position according to the ending position of the uplink transmission and starts downlink transmission within the window length.

All of the above four implementations may require LBT first.

FIG. 2 is a diagram showing a frame structure distribution of a channel occupation duration in the embodiment shown in FIG.

As shown in FIG. 2, the base station may continue to be scheduled for downlink transmission for the remaining time after the uplink transmission, and if there is remaining time after the base station performs downlink transmission, the base station may continue. The scheduling terminal performs uplink transmission, for example, uplink transmission triggered by C-PDCCH trigger B.

In addition, it should be added that downlink control information (eg, G-DCI) that is fed back for uplink transmission (eg, GUL) may be transmitted in the end subframe of the downlink transmission or the last complete subframe.

FIG. 3 shows a block diagram of a base station in accordance with one embodiment of the present application.

As shown in FIG. 3, the base station 300 includes: an uplink control information acquiring unit 302, which acquires uplink control information issued by the terminal; the frame structure determining unit 304 determines a frame structure of the communication transmission according to the transmission parameter in the uplink control information, where the frame The structure includes a start position and a stop position of the data uplink transmission of the terminal in the maximum channel occupation time period, a start position of the data downlink transmission and a maximum channel occupation duration of the base station in the maximum channel occupation duration.

In the foregoing embodiment of the present application, optionally, the frame structure determining unit 304 includes: an uplink start and stop position determining unit 3042, according to the initial position indication of the data uplink transmission in the uplink control information, the number of occupied subframes, and the occupant. The position of the frame, the configuration of the subframe interval, and the total length of the transmission occupying determine the starting position and the stopping position of the data uplink transmission of the terminal within the maximum channel occupation time.

In the foregoing embodiment of the present application, optionally, the frame structure determining unit 304 further includes: a downlink starting position determining unit 3044, determining the first downlink transmission according to the stopping position of the data uplink transmission in the maximum channel occupation duration of the terminal. a possible starting position, and initiating an LBT at a first possible starting position, wherein when the LBT is successful, the first possible starting position is determined as a starting position for performing data downlink transmission, and when the LBT fails, selecting the first The second possible starting position after the possible starting position is used to initiate the LBT, and when the LBT is successful, the location where the LBT can be successfully initiated is determined as the starting position for performing data downlink transmission, where the terminal is occupied by the maximum channel. The LBT within the duration may be different from the type and/or parameter of the LBT outside the maximum channel occupancy duration of the terminal.

In the foregoing embodiment of the present application, optionally, the uplink control information of the terminal is one, and all the transmission parameters are carried; or the uplink control information of the terminal is multiple, where each uplink control information carries all transmission parameters. Alternatively, each uplink control information carries a corresponding partial transmission parameter.

In the foregoing embodiment of the present application, optionally, the transmission parameter in the uplink control information further includes a length of the preamble signal for performing uplink transmission.

In another implementation manner of this embodiment, the frame structure determining unit 304 includes: a maximum channel occupation duration determining unit 3046, and acquires an extended channel occupation duration in the uplink control information, as the maximum channel occupation duration.

In another implementation manner of this embodiment, the maximum channel occupation duration determining unit 3046 is configured to: acquire an unexpanded first channel occupation duration in the uplink control information, and determine whether the initial channel occupation duration is a first time interval greater than or equal to the predetermined interval occurs for the first time; when it is determined that the first time interval greater than or equal to the predetermined interval occurs for the first time, the first channel occupation duration is extended to the second channel occupation duration, wherein The first time interval of the first time interval is between the downlink transmission of the terminal, the uplink transmission between the downlink transmission and the base station, the uplink transmission, the uplink transmission, and the terminal again. Between downlink transmissions or in the downlink transmission again.

In the foregoing embodiment of the present application, the uplink control information acquiring unit 302 is configured to: acquire multiple uplink control information that is sent by multiple terminals; and the frame structure determining unit 304 is configured to: determine, according to multiple uplink control information, The frame structure of the communication transmission corresponding to the terminal to which each uplink control information belongs, and the union of the frame structures of the corresponding communication transmissions of the plurality of terminals is used as the frame structure of the final communication transmission.

As shown in FIG. 4, the base station 400 includes a transmitter 422, a receiver 421, a memory 423, and a processor 424 connected to the transmitter 422, the receiver 421, and the memory 423, respectively. The receiver 421 is configured to acquire uplink control information advertised by the terminal. The memory 423 stores instructions that can be executed by the processor 424, and the processor 424 is configured to call the instructions stored in the memory 423, and perform the following operations: determining a frame structure of the communication transmission according to the transmission parameters in the uplink control information, where The frame structure includes a start position and a stop position of the data uplink transmission of the terminal in the maximum channel occupation time, a start position of the data downlink transmission and a maximum channel occupation duration of the base station in the maximum channel occupation duration.

In an implementation of the present application, the processor 424 is configured to invoke an instruction stored in the memory 423 to perform the following operations:

The step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information includes: performing, according to the uplink control information, a start position indication of the data uplink transmission, a number of occupied subframes, a position of the occupied subframe, and a sub The frame interval configuration and the total length occupied by the transmission determine the start position and stop position of the data uplink transmission of the terminal within the maximum channel occupation time.

In an implementation manner of the present application, the uplink transmission may also be a re-upload transmission after the downlink transmission.

In an implementation of the present application, the processor 424 is configured to invoke an instruction stored in the memory 423, and may also perform the following operations:

Determining a first possible starting position of the downlink transmission according to the stopping position of the data uplink transmission in the maximum channel occupation time; initiating the LBT at the first possible starting position; determining the first possible starting position when the LBT is successful For the start position of the data downlink transmission; when the LBT fails, the second possible starting position after the first possible starting position is selected to initiate the LBT, and when the LBT is successful, the location where the LBT can be successfully initiated is determined as the data. The starting position of the downlink transmission, wherein the LBT within the maximum channel occupation duration of the terminal may be different from the type and/or parameter of the LBT outside the maximum channel occupation duration of the terminal.

The uplink control information of the terminal is one, and all the transmission parameters are carried; or the uplink control information of the terminal is multiple, where each uplink control information carries all transmission parameters, or each uplink control information carries a corresponding Part of the transmission parameters.

The transmission parameters in the uplink control information include the maximum channel occupation duration.

The transmission parameters in the uplink control information also include the length of the preamble signal for uplink transmission.

In an implementation of the present application, the processor 424 is configured to invoke an instruction stored in the memory 423, and may perform the following operations:

Obtain the extended channel occupation duration in the uplink control information as the maximum channel occupation duration.

Obtaining an unexpanded first channel occupation duration in the uplink control information; determining whether a first time interval greater than or equal to a predetermined interval occurs for the first time in the initial channel occupation duration; when determining that the first time interval greater than or equal to the predetermined interval occurs for the first time The duration of the first channel is extended to the duration of the second channel, where the first time interval is the downlink transmission of the terminal, the uplink transmission between the downlink transmission and the base station, the uplink transmission, and the uplink transmission and the terminal. The next downlink transmission or between the downlink transmission again.

Obtaining a plurality of uplink control information that is sent by multiple terminals; determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information, including: determining, according to the multiple uplink control information, a communication corresponding to the terminal to which each uplink control information belongs The frame structure of the transmission; the union of the frame structures of the corresponding communication transmissions of the plurality of terminals is taken as the frame structure of the final communication transmission.

The application provides a non-transitory computer readable storage medium storing computer instructions for causing the computer to perform frame structure determination as described in any of the preceding claims method.

The technical solution of the present application is described in detail with reference to the accompanying drawings. The technical solution of the present application can be used by the terminal to advertise the uplink control information, so that the base station can obtain the complete frame structure according to the uplink control information advertised by the terminal, and The downlink transmission is directly performed during the channel time of the transmission, which reduces the delay, thereby improving the success rate of the LBT.

It should be understood that although the terms first, second, etc. may be used to describe the time interval in the embodiments of the present application, these time intervals should not be limited to these terms. These terms are only used to distinguish time intervals from each other. For example, the first time interval may also be referred to as a second time interval without departing from the scope of the embodiments of the present application. Similarly, the second time interval may also be referred to as a first time interval.

Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining" or "in response to detecting." Similarly, depending on the context, the phrase "if determined" or "if detected (conditions or events stated)" may be interpreted as "when determined" or "in response to determination" or "when detected (stated condition or event) "Time" or "in response to a test (condition or event stated)".

It should be noted that the terminals involved in the embodiments of the present application may include, but are not limited to, a personal computer (PC), a personal digital assistant (PDA), a wireless handheld device, a tablet computer, and a tablet computer. Mobile phones, MP3 players, MP4 players, etc.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present application. Part of the steps. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc., which are made within the spirit and principles of the present application, should be included in the present application. Within the scope of protection.

Claims

A frame structure determining method, comprising:

Obtaining uplink control information issued by the terminal;

Determining, according to the transmission parameter in the uplink control information, a frame structure of the communication transmission, where the frame structure includes a start position and a stop position of the uplink transmission of the data in the maximum channel occupation time of the terminal, and the base station is in The starting position of the data downlink transmission and the maximum channel occupation duration in the maximum channel occupation time.
The method for determining a frame structure according to claim 1, wherein the step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information comprises:

Determining, according to the initial position indication of the data uplink transmission in the uplink control information, the number of occupied subframes, the position of the occupied subframe, the subframe interval configuration, and the total length of the transmission occupation, determining that the terminal is in the maximum channel. The starting position and stopping position of data uplink transmission within the occupied time.
The method for determining a frame structure according to claim 2, wherein the step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information further includes:

Determining, according to the stop position of the uplink transmission of the data in the maximum channel occupation time of the terminal, determining a first possible starting position of the downlink transmission;

Initiating an LBT at the first possible starting position;

When the LBT is successful, determining the first possible starting position as the starting position of the data downlink transmission;

When the LBT fails, the second possible starting position after the first possible starting position is selected to initiate the LBT, and when the LBT is successful, the location where the LBT can be successfully initiated is determined as the starting position of the data downlink transmission. And wherein the type and/or parameter of the LBT within the maximum channel occupation duration of the terminal may be different from the type and/or parameter of the LBT outside the maximum channel occupation duration of the terminal.
The method for determining a frame structure according to claim 1, wherein the uplink control information of the terminal is one and carries all transmission parameters; or

The uplink control information of the terminal is multiple, where each of the uplink control information carries the entire transmission parameter, or each of the uplink control information carries a corresponding partial transmission parameter.
The frame structure determining method according to any one of claims 1 to 4, wherein the transmission parameter in the uplink control information includes a maximum channel occupation duration.
The frame structure determining method according to claim 5, wherein the transmission parameter in the uplink control information further comprises a length of a preamble signal for performing uplink transmission.
The frame structure determining method according to any one of claims 1 to 4, wherein the step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information comprises:

Obtaining an extended channel occupation duration in the uplink control information, as the maximum channel occupation duration.
The frame structure determining method according to any one of claims 1 to 4, wherein the step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information comprises:

Obtaining an unexpanded first channel occupation duration in the uplink control information;

Determining whether a first time interval greater than or equal to a predetermined interval occurs for the first time in the initial channel occupation duration;

When it is determined that the first time interval that is greater than or equal to the predetermined interval occurs for the first time, the first channel occupation duration is extended to the second channel occupation duration, wherein the time when the first time interval first occurs is In the downlink transmission of the terminal, between the downlink transmission and the uplink transmission by the base station, in the uplink transmission, between the uplink transmission and the downlink transmission of the terminal, or in the downlink transmission again.
The method for determining a frame structure according to any one of claims 1 to 4, wherein the step of acquiring uplink control information issued by the terminal comprises:

Obtaining multiple uplink control information issued by multiple terminals;

The step of determining a frame structure of the communication transmission according to the transmission parameter in the uplink control information includes:

Determining, according to the multiple uplink control information, a frame structure of a communication transmission corresponding to a terminal to which each uplink control information belongs;

The union of the frame structures of the corresponding communication transmissions of the plurality of terminals is taken as the frame structure of the final communication transmission.
A base station, comprising:

The uplink control information acquiring unit acquires uplink control information issued by the terminal;

a frame structure determining unit, configured to determine a frame structure of the communication transmission according to the transmission parameter in the uplink control information, where the frame structure includes a starting position of the uplink transmission of the data in the maximum channel occupation time of the terminal The stop position, the starting position of the downlink transmission of the data and the maximum channel occupation duration of the base station within the maximum channel occupation duration.
The base station according to claim 10, wherein the frame structure determining unit comprises:

The uplink start and stop position determining unit determines, according to the initial position indication of the data uplink transmission, the number of occupied subframes, the position of the occupied subframe, the subframe interval configuration, and the total length of the transmission occupation in the uplink control information. The terminal performs a start position and a stop position of data uplink transmission within the maximum channel occupation time.
The base station according to claim 11, wherein the frame structure determining unit further comprises:

The downlink start position determining unit determines a first possible starting position of the downlink transmission according to the stopping position of the data uplink transmission in the maximum channel occupation time, and initiates the LBT at the first possible starting position. ,among them,

When the LBT is successful, the first possible starting position is determined as the starting position of the data downlink transmission, and when the LBT fails, the second possible starting position after the first possible starting position is selected. Performing an LBT, until the LBT is successful, determining a location at which the LBT can be successfully initiated as the starting location of the data downlink transmission, where the LBT within the maximum channel occupation duration of the terminal is at the terminal The type and/or parameter of the LBT outside the maximum channel occupancy duration may be different.
The base station according to claim 10, wherein the uplink control information of the terminal is one, carrying all transmission parameters; or

The uplink control information of the terminal is multiple, where each of the uplink control information carries the entire transmission parameter, or each of the uplink control information carries a corresponding partial transmission parameter.
The base station according to any one of claims 10 to 13, wherein the transmission parameter in the uplink control information includes a maximum channel occupation duration.
The base station according to claim 14, wherein the transmission parameter in the uplink control information further comprises a length of a preamble signal for performing uplink transmission.
The base station according to any one of claims 10 to 13, wherein the frame structure determining unit comprises:

The maximum channel occupation duration determining unit acquires the extended channel occupation duration in the uplink control information as the maximum channel occupation duration.
The base station according to any one of claims 10 to 13, wherein the frame structure determining unit comprises:

The maximum channel occupation duration determining unit acquires the unexpanded first channel occupation duration in the uplink control information, and determines whether the first time interval greater than or equal to the predetermined interval occurs for the first time in the initial channel occupation duration; When the first time interval is greater than or equal to the predetermined interval, the first channel occupation duration is extended to the second channel occupation duration, where the first time interval of the first time interval is the terminal In the downlink transmission, between the downlink transmission and the uplink transmission by the base station, in the uplink transmission, between the uplink transmission and the downlink transmission of the terminal, or in the downlink transmission again.
The base station according to any one of claims 10 to 13, wherein the uplink control information acquiring unit is configured to:

Obtaining multiple uplink control information issued by multiple terminals;

The frame structure determining unit is configured to:

Determining, according to the multiple uplink control information, a frame structure of a communication transmission corresponding to a terminal to which each uplink control information belongs, and using a union of frame structures of corresponding communication transmissions of the multiple terminals as a frame of the final communication transmission structure.
A base station, comprising: a transmitter, a receiver, a memory, and a processor respectively connected to the transmitter, the receiver, and the memory,

The receiver is configured to acquire uplink control information issued by the terminal;

The memory stores instructions executable by the processor, and the processor is configured to invoke the instructions stored by the memory to perform the following operations:

Determining, according to the transmission parameter in the uplink control information, a frame structure of the communication transmission, where the frame structure includes a start position and a stop position of the uplink transmission of the data in the maximum channel occupation time of the terminal, and the base station is in The starting position of the data downlink transmission and the maximum channel occupation duration in the maximum channel occupation time.
A non-transitory computer readable storage medium storing computer instructions for causing the computer to perform any of claims 1-9 Methods.