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WO2018166392A1 - 帧结构确定方法和基站 - Google Patents

帧结构确定方法和基站 Download PDF

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Publication number
WO2018166392A1
WO2018166392A1 PCT/CN2018/078386 CN2018078386W WO2018166392A1 WO 2018166392 A1 WO2018166392 A1 WO 2018166392A1 CN 2018078386 W CN2018078386 W CN 2018078386W WO 2018166392 A1 WO2018166392 A1 WO 2018166392A1
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WO
WIPO (PCT)
Prior art keywords
transmission
control information
uplink control
frame structure
terminal
Prior art date
Application number
PCT/CN2018/078386
Other languages
English (en)
French (fr)
Inventor
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 (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京佰才邦技术有限公司 filed Critical 北京佰才邦技术有限公司
Publication of WO2018166392A1 publication Critical patent/WO2018166392A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a frame structure determining method and a base station.
  • the MulteFire technology is a radio access technology that extends LTE (Long Term Evolution) to an unlicensed band.
  • LTE Long Term Evolution
  • an unlicensed band carrier can provide independent services without using a licensed band carrier.
  • 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.
  • LTE generally adopts a base station-centric centralized scheduling.
  • the UE 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.
  • LBT Listen Before Talk
  • 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.
  • 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.
  • 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 uplink transmission may also be a re-upload transmission after the downlink transmission.
  • 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.
  • 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.
  • the transmission parameter in the uplink control information includes a maximum channel occupation duration.
  • the transmission parameter in the uplink control information further includes a length of a preamble signal for performing uplink transmission.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the uplink transmission may also be a re-upload transmission after the downlink transmission.
  • 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.
  • 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.
  • the transmission parameter in the uplink control information includes a maximum channel occupation duration.
  • the transmission parameter in the uplink control information further includes a length of a preamble signal for performing uplink transmission.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • FIG. 1 shows a flow chart of a frame structure determining method according to an embodiment of the present application
  • FIG. 2 is a diagram showing a frame structure distribution of a channel occupation duration in the embodiment shown in FIG. 1;
  • FIG. 3 shows a block diagram of a base station in accordance with one embodiment of the present application
  • FIG. 4 shows a block diagram of a base station in accordance with another embodiment of the present application.
  • FIG. 1 shows a flow chart of a frame structure determining method according to an embodiment of the present application.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the uplink transmission may also be a re-upload transmission after the downlink transmission.
  • 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.
  • the uplink control information of the terminal is one, and all the transmission parameters are carried.
  • 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.
  • each uplink control information carries a corresponding partial transmission parameter.
  • 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.
  • the frame structure of the final communication transmission may also be determined according to uplink control information of one of the terminals.
  • 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.
  • 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 eNB radio resource control
  • the eNB 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.
  • the presenceOfAnyOtherTechnology-r14 is true, it means that no other technology shares the current carrier.
  • the length of the MCOT maximum channel occupation duration
  • the absenceOfAnyOtherTechnology-r14 is not True (for example, when the indication is not sent), indicating that other technologies share the current carrier.
  • the MCOT length is 6 ms.
  • the terminal can indicate the channel access priority in the uplink control information (for example, G-UCI).
  • 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.
  • the MCOT There is no difference in MCOT, so there is no distinction.
  • the terminal may directly length the MCOT in the uplink control information, for example, 2-bit: 2ms, 3ms, 6ms, 10ms.
  • the uplink control information can notify the length of the MCOT or Notification channel access priority
  • 2-bit 2ms, 3ms, 6ms, 8ms; when the absenceOfAnyOtherTechnology-r14 is sent, 2-bit: 2ms, 3ms, 10ms, NA/10ms.
  • 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 ⁇ s in a time no longer than 6 ms.
  • the first predetermined channel occupation time is 6 ms
  • the second predetermined channel occupation time is 8 ms
  • the predetermined interval is 100 ⁇ s. .
  • 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 ⁇ s.
  • 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.
  • 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 ⁇ s 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 ⁇ s, 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 ⁇ s, and it can be determined that the MCOT is maintained for 6 ms.
  • 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.
  • 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.
  • 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:
  • 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;
  • 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;
  • 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.
  • 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.
  • downlink control information eg, G-DCI
  • uplink transmission eg, GUL
  • G-DCI downlink control information
  • GUL uplink transmission
  • FIG. 3 shows a block diagram of a base station in accordance with one embodiment of the present application.
  • 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.
  • 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.
  • 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.
  • 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.
  • each uplink control information carries a corresponding partial transmission parameter.
  • the transmission parameter in the uplink control information includes a maximum channel occupation duration.
  • the transmission parameter in the uplink control information further includes a length of the preamble signal for performing uplink transmission.
  • 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.
  • 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.
  • 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.
  • FIG. 4 shows a block diagram of a base station in accordance with another embodiment of the present application.
  • 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.
  • 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.
  • the uplink transmission may also be a re-upload transmission after the downlink transmission.
  • the processor 424 is configured to invoke an instruction stored in the memory 423, and may also perform the following operations:
  • 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.
  • the processor 424 is configured to invoke an instruction stored in the memory 423, and may perform the following operations:
  • the processor 424 is configured to invoke an instruction stored in the memory 423, and may perform the following operations:
  • 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.
  • the processor 424 is configured to invoke an instruction stored in the memory 423, and may perform the following operations:
  • 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.
  • 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.
  • 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.
  • second time interval may also be referred to as a first time interval.
  • the word “if” as used herein may be interpreted as “when” or “when” or “in response to determining” or “in response to detecting.”
  • 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)”.
  • 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.
  • PC personal computer
  • PDA personal digital assistant
  • Mobile phones MP3 players, MP4 players, etc.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined. Or it can be integrated into another system, or some features can be ignored or not executed.
  • 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.
  • 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. .

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Abstract

本申请提出了一种帧结构确定方法和一种基站，其中，帧结构确定方法包括：获取终端发布的上行控制信息；根据上行控制信息中的传输参数，确定通信传输的帧结构，其中，帧结构包括终端在最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在最大信道占用时长内进行数据下行传输的起始位置和最大信道占用时长。通过本申请的技术方案，可以由终端发布上行控制信息进行调度，这样，基站可以根据终端发布的上行控制信息获取到完整的帧结构，在上行传输的信道占用时间内直接进行下行传输，降低了时延，从而提升了LBT的成功率。

Description

帧结构确定方法和基站
本申请要求于2017年03月14日提交中国专利局、申请号为201710150988.3、发明名称为“帧结构确定方法和基站”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种帧结构确定方法和一种基站。
背景技术
MulteFire技术是一种将LTE(Long Term Evolution，长期演进)扩展到非授权频段的无线接入技术，该技术中，非授权频段载波可以不借助授权频段载波独立提供服务。
目前，为使多个非授权频段设备(如Wi-Fi设备)公平占用非授权频段信道，并避免非授权频段设备之间的相互干扰，在MF(MulteFire)物理层引入类似Wi-Fi的载波监听技术的LBT(Listen Before Talk，先听后说)机制，在基站或终端监听到非授权频段信道被占用时，即LBT失败时，不得发送信号，当监听到非授权频段信道空闲时，即LBT成功时，才发送信号。
相关技术中，LTE一般采用基站为中心的集中式调度，对于UE(用户设备)的上行传输而言，需要UE先发起调度请求，然后等待基站的上行调度，才能发送开始上行传输，且其中每次发送信号前，作为发送端的基站或者UE都需要进行LBT(Listen Before Talk)，这加大了时延，降低了LBT成功率，进而造成基于基站调度的上行传输在非授权频段的传输中发生上行吞吐量和时延等性能下降的情况。
因此，如何提供一种更为有效的通信方式，成为目前亟待解决 的技术问题。
申请内容
本申请实施例提供了一种帧结构确定方法和一种基站，能够提供一种更为有效的通信方式，使得基站在终端自主调度上行传输的基础上，能够准确确定最大信道占用时长及其内部的帧结构，从而方便基站确定下行传输的起始位置。
第一方面，本申请实施例提供了一种帧结构确定方法，包括：获取终端发布的上行控制信息；根据所述上行控制信息中的传输参数，确定通信传输的帧结构，其中，所述帧结构包括所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在所述最大信道占用时长内进行数据下行传输的起始位置和最大信道占用时长。
在本申请上述实施例中，可选地，所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，具体包括：根据所述上行控制信息中的进行数据上行传输的起始位置指示、占用子帧的数目、占用子帧的位置、子帧间隔配置和传输占用的总长度，确定所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置。
在本申请上述实施例中，可选地，该上行传输也可以为下行传输之后的再次上传传输。
在本申请上述实施例中，可选地，所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，还包括：根据所述终端在所述最大信道占用时长内进行数据上行传输的停止位置，确定下行传输的第一可能起始位置；在所述第一可能起始位置发起LBT；当LBT成功时，将所述第一可能起始位置确定为所述进行数据下行传输的起始位置；当LBT失败时，选择所述第一可能起始位置后的第二可能起始位置进行发起LBT，直至LBT成功时，将能够成功发起LBT的位置确定为所述进行数据下行传输的起始位置，其 中在所述终端在所述最大信道占用时长内的LBT与在所述终端在所述最大信道占用时长外的LBT的类型和/或参数可以不同。
在本申请上述实施例中，可选地，所述终端的上行控制信息为一个，携带有全部传输参数；或者所述终端的上行控制信息为多个，其中，每个所述上行控制信息均携带有所述全部传输参数，或者，每个所述上行控制信息携带有对应的部分传输参数。
在本申请上述实施例中，可选地，所述上行控制信息中的传输参数包括最大信道占用时长。
在本申请上述实施例中，可选地，所述上行控制信息中的传输参数还包括进行上行传输的前导信号的长度。
在本申请上述实施例中，可选地，所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，包括：获取所述上行控制信息中的已扩展信道占用时长，作为所述最大信道占用时长。
在本申请上述实施例中，可选地，所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，包括：获取所述上行控制信息中的未扩展的第一信道占用时长；判断所述初始信道占用时长内是否首次出现大于或等于预定间隔的第一时间间隔；当确定首次出现大于或等于所述预定间隔的所述第一时间间隔时，将所述第一信道占用时长扩展至第二信道占用时长，其中，首次出现所述第一时间间隔的时间为所述终端的下行传输中、所述下行传输与所述基站进行上行传输之间、所述上行传输中、所述上行传输与所述终端的再次下行传输之间或所述再次下行传输中。
在本申请上述实施例中，可选地，所述获取终端发布的上行控制信息的步骤包括：获取多个终端发布的多个上行控制信息；所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，包括：根据所述多个上行控制信息，确定每个上行控制信息所属终端对应的通信传输的帧结构；将所述多个终端的对应的通信传输的帧结构的并集作为最终的通信传输的帧结构。
第二方面，本申请实施例提供了一种基站，包括：上行控制信 息获取单元，获取终端发布的上行控制信息；帧结构确定单元，根据所述上行控制信息中的传输参数，确定通信传输的帧结构，其中，所述帧结构包括所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在所述最大信道占用时长内进行数据下行传输的起始位置和最大信道占用时长。
在本申请上述实施例中，可选地，所述帧结构确定单元包括：上行起止位置确定单元，根据所述上行控制信息中的进行数据上行传输的起始位置指示、占用子帧的数目、占用子帧的位置、子帧间隔配置和传输占用的总长度，确定所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置。
在本申请上述实施例中，可选地，该上行传输也可以为下行传输之后的再次上传传输。
在本申请上述实施例中，可选地，所述帧结构确定单元还包括：下行起始位置确定单元，根据所述终端在所述最大信道占用时长内进行数据上行传输的停止位置，确定下行传输的第一可能起始位置，并在所述第一可能起始位置发起LBT，其中，当LBT成功时，将所述第一可能起始位置确定为所述进行数据下行传输的起始位置，而当LBT失败时，选择所述第一可能起始位置后的第二可能起始位置进行发起LBT，直至LBT成功时，将能够成功发起LBT的位置确定为所述进行数据下行传输的起始位置。，其中在所述终端在所述最大信道占用时长内的LBT与在所述终端在所述最大信道占用时长外的LBT的类型和/或参数可以不同
在本申请上述实施例中，可选地，所述终端的上行控制信息为一个，携带有全部传输参数；或者所述终端的上行控制信息为多个，其中，每个所述上行控制信息均携带有所述全部传输参数，或者，每个所述上行控制信息携带有对应的部分传输参数。
在本申请上述实施例中，可选地，所述上行控制信息中的传输参数包括最大信道占用时长。
在本申请上述实施例中，可选地，所述上行控制信息中的传输 参数还包括进行上行传输的前导信号的长度。
在本申请上述实施例中，可选地，所述帧结构确定单元包括：最大信道占用时长确定单元，获取所述上行控制信息中的已扩展信道占用时长，作为所述最大信道占用时长。
在本申请上述实施例中，可选地，所述帧结构确定单元包括：最大信道占用时长确定单元，获取所述上行控制信息中的未扩展的第一信道占用时长，并判断所述初始信道占用时长内是否首次出现大于或等于预定间隔的第一时间间隔；当确定首次出现大于或等于所述预定间隔的所述第一时间间隔时，将所述第一信道占用时长扩展至第二信道占用时长，其中，首次出现所述第一时间间隔的时间为所述终端的下行传输中、所述下行传输与所述基站进行上行传输之间、所述上行传输中、所述上行传输与所述终端的再次下行传输之间或所述再次下行传输中。
在本申请上述实施例中，可选地，所述上行控制信息获取单元用于：获取多个终端发布的多个上行控制信息；以及所述帧结构确定单元用于：根据所述多个上行控制信息，确定每个上行控制信息所属终端对应的通信传输的帧结构，并将所述多个终端的对应的通信传输的帧结构的并集作为最终的通信传输的帧结构。
第三方面，本申请实施例提供了一种基站，包括发射机、接收机、存储器以及分别与发射机、接收机和存储器连接的处理器，所述接收机，用于获取终端发布的上行控制信息；所述存储器中存储有能够被所述处理器执行的指令，且处理器用于调用所述存储器存储的所述指令，执行以下操作：根据所述上行控制信息中的传输参数，确定通信传输的帧结构，其中，所述帧结构包括所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在所述最大信道占用时长内进行数据下行传输的起始位置和最大信道占用时长。
第四方面，本申请实施例提供了一种非暂态计算机可读存储介质，所述非暂态计算机可读存储介质存储计算机指令，所述计算机 指令用于使所述计算机执行前述任一项帧结构确定方法。
以上技术方案，针对相关技术中的以基站为中心的集中式调度带来的一系列问题，可以由终端发布上行控制信息进行调度，这样，基站可以根据终端发布的上行控制信息来确定最大信道占用时长以及上行传输的起始位置和停止位置、下行传输的起始位置，获取到完整的帧结构，简化了基站的工作，降低了时延，从而提升了LBT的成功率。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其它的附图。
图1示出了根据本申请的一个实施例的帧结构确定方法的流程图；
图2示出了图1示出的实施例中信道占用时长的帧结构分布图；
图3示出了根据本申请的一个实施例的基站的框图；
图4示出了根据本申请的另一个实施例的基站的框图。
具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目 的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
图1示出了根据本申请的一个实施例的帧结构确定方法的流程图。
如图1所示，帧结构确定方法包括：
步骤102，获取终端发布的上行控制信息。
步骤104，根据上行控制信息中的传输参数，确定通信传输的帧结构。
其中，帧结构包括终端在最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在最大信道占用时长内进行数据下行传输的起始位置和最大信道占用时长。
由此，可以由终端发布上行控制信息进行调度，这样，基站可以根据终端发布的上行控制信息来确定最大信道占用时长以及上行传输的起始位置和停止位置、下行传输的起始位置，获取到完整的帧结构，在上行传输的信道占用时间内直接进行下行传输，降低了时延，从而提升了LBT的成功率。
在本实施例的一种实现方式中，步骤104具体包括：根据上行控制信息中的进行数据上行传输的起始位置指示、占用子帧的数目、占用子帧的位置、子帧间隔配置和传输占用的总长度，确定终端在最大信道占用时长内进行数据上行传输的起始位置和停止位置。
也就是说，上行控制信息中的传输参数可以包括进行数据上行传输的起始位置指示、占用子帧的数目、占用子帧的位置、子帧间隔配置和传输占用的总长度等内容，通过这些传输参数，基站可以判断出终端进行数据上行传输的起始位置和停止位置，从而便于进一步确定下行传输的起始位置和最大信道占用时长。
需要补充的是，终端可以在发布的上行控制信息、DMRS(解调参考信号)序列和前导序列中的任一项或多项中携带这些传输参数，以便基站进行获取或检测。其中，携带的传输参数还可以包括进行 上行传输的前导信号的长度，以便基站在计算终端进行数据上行传输的起始位置和停止位置之前减去进行上行传输的前导信号的长度，以获取更精确的终端进行数据上行传输的起始位置和停止位置。
在本实施例的一种实现方式中，该上行传输也可以为下行传输之后的再次上传传输。换句话说，如果在总的上行传输对应的信道占用时间内，完成了终端与基站的上行传输和基站对终端的下行传输后，还可以发起终端与基站的再次上行传输，而该再次上行传输的起始位置和停止位置也是可以由终端的上行控制信息和/或基站的下行控制信息来确定的。
在本实施例的一种实现方式中，终端的上行控制信息为一个，携带有全部传输参数。
在本实施例的一种实现方式中，终端的上行控制信息为多个，其中，每个上行控制信息均携带有全部传输参数，这样，可以在单个上行控制信息发布或接收出现问题时，仍能够保证有其他备份被终端发布或被基站接收，提升了通信的有效性。或者，每个上行控制信息携带有对应的部分传输参数。
在本实施例的一种实现方式中，如果多个终端发布了多个上行控制信息，那么，可确定每个上行控制信息所属终端对应的通信传输的帧结构，并将多个终端的对应的通信传输的帧结构的并集(即，合并后最大的占用时长)作为最终的通信传输的帧结构。可选的，也可以根据其中一个终端的上行控制信息确定最终的通信传输的帧结构。
在本实施例的一种实现方式中，上行控制信息中的传输参数包括已扩展信道占用时长，即最大信道占用时长，这样，基站可以直接获取到最大信道占用时长，并进一步判断是否需要对信道占用时长进行延长。
在本实施例的一种实现方式中，获取所述上行控制信息中的未扩展的第一信道占用时长，并判断所述初始信道占用时长内是否首次出现大于或等于预定间隔的第一时间间隔；当确定首次出现大于 或等于所述预定间隔的所述第一时间间隔时，将所述第一信道占用时长扩展至第二信道占用时长，其中，首次出现所述第一时间间隔的时间为所述终端的下行传输中、所述下行传输与所述基站进行上行传输之间、所述上行传输中、所述上行传输与所述终端的再次下行传输之间或所述再次下行传输中。
下面，结合具体场景对上述实现方式进行详细说明。
基站可以通过RRC(无线资源控制)通知终端是否有其他技术共享当前载波，终端根据该通知可以确定MCOT(最大信道占用时长)。
其中，absenceOfAnyOtherTechnology-r14为true时，表示没有其他技术共享当前载波，此时，在信道接入优先级为3或4时，MCOT(最大信道占用时长)长度为10ms，反之，absenceOfAnyOtherTechnology-r14不为true(例如，未发送该指示)时，表示有其他技术共享当前载波，在信道接入优先级为3或4时，MCOT长度为6ms。
由此，终端在上行控制信息(例如，G-UCI)中可以指示信道接入优先级，例如，2-bit对应1，2，3，4来查表1获得对应MCOT，其中3或4对MCOT而言无区别因此也可不做区分。
表1
Figure PCTCN2018078386-appb-000001
或者，终端在上行控制信息中可以直接MCOT的长度，例如，2-比特：2ms，3ms，6ms，10ms。具体来说，当终端能够确定当前信道存在其他技术共享信道且在信道接入优先级为3或4时，并满足MCOT从6ms扩展到8ms的条件时，上行控制信息中可以通知MCOT的长度或者通知信道接入优先级
通知MCOT的长度的示例如下：
当absenceOfAnyOtherTechnology-r14未发送时，2-bit：2ms，3ms，6ms，8ms；当absenceOfAnyOtherTechnology-r14发送时，2-bit：2ms，3ms，10ms，NA/10ms。
通知信道接入优先级的示例如下：
absenceOfAnyOtherTechnology-r14未发送时，2-bit：1，2，3或4，3或4延长至8ms MCOT；当absenceOfAnyOtherTechnology-r14发送时，2-bit：1，2，3，4。其中3或4对MCOT而言无区别因此也可不做区分。
此外，也可以在上述通知基础上，基站进一步结合上行控制信息中的下行传输的起始位置、终止位置和上行传输的最早起始位置中的一项或多项来判断是否存在满足MCOT从6ms扩展到8ms的条件。其中，满足MCOT从6ms扩展到8ms的条件为在不大于6ms的时间内存在大于100μs的间隔，此处，第一预定信道占用时长为 6ms，第二预定信道占用时长为8ms，预定间隔为100μs。
进一步地，当absenceOfAnyOtherTechnology-r14未发送时，在终端采用的信道接入优先级为3或4的情况下，且第一预定信道占用时长内不满足MCOT从6ms扩展到8ms的条件(即不存在大于100μs的间隔)时，基站根据上行传输与下行传输的间隔(如LBT导致的间隔)是否满足大于100μs来判断是否将MCOT从6ms扩展到8ms。如果在总的上行传输对应的信道占用时间内，完成了终端与基站的上行传输和基站对终端的下行传输后，还可以发起终端与基站的再次上行传输，因此，同理，基站也可以进一步根据下行传输和再次上行传输的时间间隔，以及再次上行传输过程内的时间间隔等，来判断是否满足扩展信道占用时长的条件。
例如当absenceOfAnyOtherTechnology-r14未发送时，上行控制信息指示的信息包括：信道接入优先级为3，上行传输占用4ms且中间无大于100μs的间隔，请求基站在剩余MCOT发送下行信号。如果基站在信道接入成功后在第5ms的第二个slot开始发送下行，则因上行传输与下行传输的间隔大于100μs，可判断扩展MCOT至8ms。而如果基站在第5ms的第一个slot开始发送下行，则因上行传输与下行传输的间隔小于100μs，可判断MCOT维持6ms。
在本实施例的一种实现方式中，步骤104还包括：根据终端在最大信道占用时长内进行数据上行传输的停止位置，确定下行传输的第一可能起始位置；在第一可能起始位置发起LBT；当LBT成功时，将第一可能起始位置确定为进行数据下行传输的起始位置；当LBT失败时，选择第一可能起始位置后的第二可能起始位置进行发起LBT，直至LBT成功时，将能够成功发起LBT的位置确定为进行数据下行传输的起始位置，其中在所述终端在所述最大信道占用时长内的LBT与在所述终端在所述最大信道占用时长外的LBT的类型和/或参数可以不同。
例如，基站判断最早可能的下行传输位置在第一可能起始位置的子帧N的子帧(起始)边界时，可以先尝试在子帧N的子帧边界 前进行LBT，当LBT成功则在子帧N的子帧边界发起下行传输，当LBT不成功则尝试在下一个可能的下行传输位置进行LBT，下一个可能的下行传输位置可以为子帧N的第二个slot的边界或子帧N+1的起始边界等任意位置。
此外，针对终端在上行控制信息中指示下行传输是起始位置的指示方式可以包括以下实现方式：
1、终端指示的下行起始位置，基站在指示的位置开始进行下行传输；
2、终端指示的下行起始位置，基站在指示的下行位置开始的窗长内开始进行下行传输；
3、终端仅指示下行请求及上行传输的时长，基站根据上行传输的结束位置确定下行起始位置；
4、终端仅指示下行请求及上行传输的时长，基站根据上行传输的结束位置确定下行起始位置并在窗长内开始进行下行传输。
上述四种实现方式均可能需要先进行LBT。
图2示出了图1示出的实施例中信道占用时长的帧结构分布图。
如图2所示，可以在整个上行传输的信道占用时长内，进行上行传输后的剩余时间内继续调度基站进行下行传输，如果在基站进行下行传输后，还有剩余时间，则可以由基站继续调度终端进行上行传输，例如通过C-PDCCH trigger B触发的上行传输。
另外，需要补充的是，针对上行传输(例如，GUL)进行反馈的下行控制信息(例如，G-DCI)可以在下行传输的结尾子帧进行或者最后一个完整的子帧进行发送。
图3示出了根据本申请的一个实施例的基站的框图。
如图3所示，基站300包括：上行控制信息获取单元302，获取终端发布的上行控制信息；帧结构确定单元304，根据上行控制信息中的传输参数，确定通信传输的帧结构，其中，帧结构包括终端在最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在最大信道占用时长内进行数据下行传输的起始位置和最大信 道占用时长。
在本申请上述实施例中，可选地，帧结构确定单元304包括：上行起止位置确定单元3042，根据上行控制信息中的进行数据上行传输的起始位置指示、占用子帧的数目、占用子帧的位置、子帧间隔配置和传输占用的总长度，确定终端在最大信道占用时长内进行数据上行传输的起始位置和停止位置。
在本申请上述实施例中，可选地，帧结构确定单元304还包括：下行起始位置确定单元3044，根据终端在最大信道占用时长内进行数据上行传输的停止位置，确定下行传输的第一可能起始位置，并在第一可能起始位置发起LBT，其中，当LBT成功时，将第一可能起始位置确定为进行数据下行传输的起始位置，而当LBT失败时，选择第一可能起始位置后的第二可能起始位置进行发起LBT，直至LBT成功时，将能够成功发起LBT的位置确定为进行数据下行传输的起始位置，其中在所述终端在所述最大信道占用时长内的LBT与在所述终端在所述最大信道占用时长外的LBT的类型和/或参数可以不同。
在本申请上述实施例中，可选地，终端的上行控制信息为一个，携带有全部传输参数；或者终端的上行控制信息为多个，其中，每个上行控制信息均携带有全部传输参数，或者，每个上行控制信息携带有对应的部分传输参数。
在本申请上述实施例中，可选地，上行控制信息中的传输参数包括最大信道占用时长。
在本申请上述实施例中，可选地，上行控制信息中的传输参数还包括进行上行传输的前导信号的长度。
在本实施例的另一种实现方式中，帧结构确定单元304包括：最大信道占用时长确定单元3046，获取所述上行控制信息中的已扩展信道占用时长，作为所述最大信道占用时长。
而在本实施例的另一种实现方式中，最大信道占用时长确定单元3046则于：获取所述上行控制信息中的未扩展的第一信道占用时 长，并判断所述初始信道占用时长内是否首次出现大于或等于预定间隔的第一时间间隔；当确定首次出现大于或等于所述预定间隔的所述第一时间间隔时，将所述第一信道占用时长扩展至第二信道占用时长，其中，首次出现所述第一时间间隔的时间为所述终端的下行传输中、所述下行传输与所述基站进行上行传输之间、所述上行传输中、所述上行传输与所述终端的再次下行传输之间或所述再次下行传输中。
在本申请上述实施例中，可选地，上行控制信息获取单元302用于：获取多个终端发布的多个上行控制信息；以及帧结构确定单元304用于：根据多个上行控制信息，确定每个上行控制信息所属终端对应的通信传输的帧结构，并将多个终端的对应的通信传输的帧结构的并集作为最终的通信传输的帧结构。
图4示出了根据本申请的另一个实施例的基站的框图。
如图4所示，基站400包括发射机422、接收机421、存储器423以及分别与发射机422、接收机421和存储器423连接的处理器424，接收机421用于获取终端发布的上行控制信息；存储器423中存储有能够被处理器424执行的指令，且处理器424用于调用存储器423存储的指令，执行以下操作：根据上行控制信息中的传输参数，确定通信传输的帧结构，其中，帧结构包括终端在最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在最大信道占用时长内进行数据下行传输的起始位置和最大信道占用时长。
在本申请的一种实现方式中，处理器424用于调用存储器423存储的指令，执行以下操作：
根据上行控制信息中的传输参数，确定通信传输的帧结构的步骤，具体包括：根据上行控制信息中的进行数据上行传输的起始位置指示、占用子帧的数目、占用子帧的位置、子帧间隔配置和传输占用的总长度，确定终端在最大信道占用时长内进行数据上行传输的起始位置和停止位置。
在本申请的一种实现方式中，该上行传输也可以为下行传输之 后的再次上传传输。
在本申请的一种实现方式中，处理器424用于调用存储器423存储的指令，还可以执行以下操作：
根据终端在最大信道占用时长内进行数据上行传输的停止位置，确定下行传输的第一可能起始位置；在第一可能起始位置发起LBT；当LBT成功时，将第一可能起始位置确定为进行数据下行传输的起始位置；当LBT失败时，选择第一可能起始位置后的第二可能起始位置进行发起LBT，直至LBT成功时，将能够成功发起LBT的位置确定为进行数据下行传输的起始位置，其中在终端在最大信道占用时长内的LBT与在终端在最大信道占用时长外的LBT的类型和/或参数可以不同。
其中，终端的上行控制信息为一个，携带有全部传输参数；或者终端的上行控制信息为多个，其中，每个上行控制信息均携带有全部传输参数，或者，每个上行控制信息携带有对应的部分传输参数。
上行控制信息中的传输参数包括最大信道占用时长。
上行控制信息中的传输参数还包括进行上行传输的前导信号的长度。
在本申请的一种实现方式中，处理器424用于调用存储器423存储的指令，可以执行以下操作：
获取上行控制信息中的已扩展信道占用时长，作为最大信道占用时长。
在本申请的一种实现方式中，处理器424用于调用存储器423存储的指令，可以执行以下操作：
获取上行控制信息中的未扩展的第一信道占用时长；判断初始信道占用时长内是否首次出现大于或等于预定间隔的第一时间间隔；当确定首次出现大于或等于预定间隔的第一时间间隔时，将第一信道占用时长扩展至第二信道占用时长，其中，首次出现第一时间间隔的时间为终端的下行传输中、下行传输与基站进行上行传输之间、 上行传输中、上行传输与终端的再次下行传输之间或再次下行传输中。
在本申请的一种实现方式中，处理器424用于调用存储器423存储的指令，可以执行以下操作：
获取多个终端发布的多个上行控制信息；根据上行控制信息中的传输参数，确定通信传输的帧结构的步骤，包括：根据多个上行控制信息，确定每个上行控制信息所属终端对应的通信传输的帧结构；将多个终端的对应的通信传输的帧结构的并集作为最终的通信传输的帧结构。
本申请提供了一种非暂态计算机可读存储介质，所述非暂态计算机可读存储介质存储计算机指令，所述计算机指令用于使所述计算机执行前述任一项所述的帧结构确定方法。
以上结合附图详细说明了本申请的技术方案，通过本申请的技术方案，可以由终端发布上行控制信息进行调度，这样，基站可以根据终端发布的上行控制信息获取到完整的帧结构，在上行传输的信道占用时间内直接进行下行传输，降低了时延，从而提升了LBT的成功率。
应当理解，尽管在本申请实施例中可能采用术语第一、第二等来描述时间间隔，但这些时间间隔不应限于这些术语。这些术语仅用来将时间间隔彼此区分开。例如，在不脱离本申请实施例范围的情况下，第一时间间隔也可以被称为第二时间间隔，类似地，第二时间间隔也可以被称为第一时间间隔。
取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”或“响应于检测”。类似地，取决于语境，短语“如果确定”或“如果检测(陈述的条件或事件)”可以被解释成为“当确定时”或“响应于确定”或“当检测(陈述的条件或事件)时”或“响应于检测(陈述的条件或事件)”。
需要说明的是，本申请实施例中所涉及的终端可以包括但不限于个人计算机(Personal Computer，PC)、个人数字助理(Personal  Digital Assistant，PDA)、无线手持设备、平板电脑(Tablet Computer)、手机、MP3播放器、MP4播放器等。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如，多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机装置(可以是个人计算机，服务器，或者网络装置等)或处理器(Processor)执行本申请各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。

Claims (20)

  1. 一种帧结构确定方法，其特征在于，包括：
    获取终端发布的上行控制信息；
    根据所述上行控制信息中的传输参数，确定通信传输的帧结构，其中，所述帧结构包括所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在所述最大信道占用时长内进行数据下行传输的起始位置和最大信道占用时长。
  2. 根据权利要求1所述的帧结构确定方法，其特征在于，所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，具体包括：
    根据所述上行控制信息中的进行数据上行传输的起始位置指示、占用子帧的数目、占用子帧的位置、子帧间隔配置和传输占用的总长度，确定所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置。
  3. 根据权利要求2所述的帧结构确定方法，其特征在于，所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，还包括：
    根据所述终端在所述最大信道占用时长内进行数据上行传输的停止位置，确定下行传输的第一可能起始位置；
    在所述第一可能起始位置发起LBT；
    当LBT成功时，将所述第一可能起始位置确定为所述进行数据下行传输的起始位置；
    当LBT失败时，选择所述第一可能起始位置后的第二可能起始位置进行发起LBT，直至LBT成功时，将能够成功发起LBT的位置确定为所述进行数据下行传输的起始位置，其中在所述终端在所述最大信道占用时长内的LBT与在所述终端在所述最大信道占用时长外的LBT的类型和/或参数可以不同。
  4. 根据权利要求1所述的帧结构确定方法，其特征在于，所述 终端的上行控制信息为一个，携带有全部传输参数；或者
    所述终端的上行控制信息为多个，其中，每个所述上行控制信息均携带有所述全部传输参数，或者，每个所述上行控制信息携带有对应的部分传输参数。
  5. 根据权利要求1至4中任一项所述的帧结构确定方法，其特征在于，所述上行控制信息中的传输参数包括最大信道占用时长。
  6. 根据权利要求5所述的帧结构确定方法，其特征在于，所述上行控制信息中的传输参数还包括进行上行传输的前导信号的长度。
  7. 根据权利要求1至4中任一项所述的帧结构确定方法，其特征在于，所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，包括：
    获取所述上行控制信息中的已扩展信道占用时长，作为所述最大信道占用时长。
  8. 根据权利要求1至4中任一项所述的帧结构确定方法，其特征在于，所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，包括：
    获取所述上行控制信息中的未扩展的第一信道占用时长；
    判断所述初始信道占用时长内是否首次出现大于或等于预定间隔的第一时间间隔；
    当确定首次出现大于或等于所述预定间隔的所述第一时间间隔时，将所述第一信道占用时长扩展至第二信道占用时长，其中，首次出现所述第一时间间隔的时间为所述终端的下行传输中、所述下行传输与所述基站进行上行传输之间、所述上行传输中、所述上行传输与所述终端的再次下行传输之间或所述再次下行传输中。
  9. 根据权利要求1至4中任一项所述的帧结构确定方法，其特征在于，所述获取终端发布的上行控制信息的步骤包括：
    获取多个终端发布的多个上行控制信息；
    所述根据所述上行控制信息中的传输参数，确定通信传输的帧结构的步骤，包括：
    根据所述多个上行控制信息，确定每个上行控制信息所属终端对应的通信传输的帧结构；
    将所述多个终端的对应的通信传输的帧结构的并集作为最终的通信传输的帧结构。
  10. 一种基站，其特征在于，包括：
    上行控制信息获取单元，获取终端发布的上行控制信息；
    帧结构确定单元，根据所述上行控制信息中的传输参数，确定通信传输的帧结构，其中，所述帧结构包括所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在所述最大信道占用时长内进行数据下行传输的起始位置和最大信道占用时长。
  11. 根据权利要求10所述的基站，其特征在于，所述帧结构确定单元包括：
    上行起止位置确定单元，根据所述上行控制信息中的进行数据上行传输的起始位置指示、占用子帧的数目、占用子帧的位置、子帧间隔配置和传输占用的总长度，确定所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置。
  12. 根据权利要求11所述的基站，其特征在于，所述帧结构确定单元还包括：
    下行起始位置确定单元，根据所述终端在所述最大信道占用时长内进行数据上行传输的停止位置，确定下行传输的第一可能起始位置，并在所述第一可能起始位置发起LBT，其中，
    当LBT成功时，将所述第一可能起始位置确定为所述进行数据下行传输的起始位置，而当LBT失败时，选择所述第一可能起始位置后的第二可能起始位置进行发起LBT，直至LBT成功时，将能够成功发起LBT的位置确定为所述进行数据下行传输的起始位置，其中在所述终端在所述最大信道占用时长内的LBT与在所述终端在所述最大信道占用时长外的LBT的类型和/或参数可以不同。
  13. 根据权利要求10所述的基站，其特征在于，所述终端的上 行控制信息为一个，携带有全部传输参数；或者
    所述终端的上行控制信息为多个，其中，每个所述上行控制信息均携带有所述全部传输参数，或者，每个所述上行控制信息携带有对应的部分传输参数。
  14. 根据权利要求10至13中任一项所述的基站，其特征在于，所述上行控制信息中的传输参数包括最大信道占用时长。
  15. 根据权利要求14所述的基站，其特征在于，所述上行控制信息中的传输参数还包括进行上行传输的前导信号的长度。
  16. 根据权利要求10至13中任一项所述的基站，其特征在于，所述帧结构确定单元包括：
    最大信道占用时长确定单元，获取所述上行控制信息中的已扩展信道占用时长，作为所述最大信道占用时长。
  17. 根据权利要求10至13中任一项所述的基站，其特征在于，所述帧结构确定单元包括：
    最大信道占用时长确定单元，获取所述上行控制信息中的未扩展的第一信道占用时长，并判断所述初始信道占用时长内是否首次出现大于或等于预定间隔的第一时间间隔；当确定首次出现大于或等于所述预定间隔的所述第一时间间隔时，将所述第一信道占用时长扩展至第二信道占用时长，其中，首次出现所述第一时间间隔的时间为所述终端的下行传输中、所述下行传输与所述基站进行上行传输之间、所述上行传输中、所述上行传输与所述终端的再次下行传输之间或所述再次下行传输中。
  18. 根据权利要求10至13中任一项所述的基站，其特征在于，所述上行控制信息获取单元用于：
    获取多个终端发布的多个上行控制信息；以及
    所述帧结构确定单元用于：
    根据所述多个上行控制信息，确定每个上行控制信息所属终端对应的通信传输的帧结构，并将所述多个终端的对应的通信传输的帧结构的并集作为最终的通信传输的帧结构。
  19. 一种基站，其特征在于，包括发射机、接收机、存储器以及分别与发射机、接收机和存储器连接的处理器，
    所述接收机，用于获取终端发布的上行控制信息；
    所述存储器中存储有能够被所述处理器执行的指令，且处理器用于调用所述存储器存储的所述指令，执行以下操作：
    根据所述上行控制信息中的传输参数，确定通信传输的帧结构，其中，所述帧结构包括所述终端在所述最大信道占用时长内进行数据上行传输的起始位置和停止位置、基站在所述最大信道占用时长内进行数据下行传输的起始位置和最大信道占用时长。
  20. 一种非暂态计算机可读存储介质，其特征在于，所述非暂态计算机可读存储介质存储计算机指令，所述计算机指令用于使所述计算机执行权利要求1-9任一项所述的方法。
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