CN106851839B - Frame structure determining method and base station - Google Patents
Frame structure determining method and base station Download PDFInfo
- Publication number
- CN106851839B CN106851839B CN201710150988.3A CN201710150988A CN106851839B CN 106851839 B CN106851839 B CN 106851839B CN 201710150988 A CN201710150988 A CN 201710150988A CN 106851839 B CN106851839 B CN 106851839B
- Authority
- CN
- China
- Prior art keywords
- transmission
- control information
- uplink control
- terminal
- frame structure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Classifications
-
- 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
- H04W72/12—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
- H04W72/20—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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a frame structure determining method and a base station, wherein the frame structure determining method comprises the following steps: acquiring uplink control information issued by a terminal; and determining a frame structure of communication transmission according to the transmission parameters in the uplink control information, wherein the frame structure comprises a starting position and a stopping position of the terminal for performing data uplink transmission within the maximum channel occupation duration, and a starting position and a maximum channel occupation duration of the base station for performing data downlink transmission within the maximum channel occupation duration. Through the technical scheme of the invention, the terminal can issue the uplink control information for scheduling, so that the base station can acquire a complete frame structure according to the uplink control information issued by the terminal, and directly perform downlink transmission within the occupied time of an uplink transmission channel, thereby reducing time delay and improving the success rate of LBT.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of communications technologies, and in particular, to a method for determining a frame structure and a base station
[ background of the invention ]
The MulteFire technology is a wireless access technology for extending LTE (Long Term Evolution) to an unlicensed frequency band, and in the technology, a carrier wave of the unlicensed frequency band can independently provide service without the help of a carrier wave of the licensed frequency band.
At present, in order to enable a plurality of unlicensed band devices (e.g., Wi-Fi devices) to fairly occupy an unlicensed band channel and avoid mutual interference between the unlicensed band devices, a Listen-Before-Talk (LBT) mechanism similar to a Wi-Fi carrier monitoring technique is introduced into an mf (multefire) physical layer, when a base station or a terminal monitors that the unlicensed band channel is occupied, that is, when LBT fails, a signal must not be sent, and when the unlicensed band channel is monitored to be idle, that is, when LBT succeeds, the signal is sent.
In the related art, LTE generally adopts centralized scheduling with a base station as a center, for uplink transmission of UE (user equipment), the UE needs to initiate a scheduling request first, and then wait for uplink scheduling of the base station to send uplink transmission, and Before sending a signal each time, the base station or UE serving as a sending end needs to perform LBT (listen Before talk), which increases the time delay, reduces the success rate of LBT, and further causes performance degradation such as uplink throughput and time delay in transmission of an unlicensed frequency band in uplink transmission based on base station scheduling.
Therefore, how to provide a more efficient communication method is a technical problem to be solved urgently.
[ summary of the invention ]
The embodiment of the invention 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 the internal frame structure thereof on the basis of the terminal autonomously scheduling uplink transmission, thereby facilitating the base station to determine the initial position of downlink transmission.
In a first aspect, an embodiment of the present invention provides a method for determining a frame structure, including: acquiring uplink control information issued by a terminal; and determining a frame structure of communication transmission according to the transmission parameters in the uplink control information, wherein the frame structure comprises a starting position and a stopping position of the terminal for performing data uplink transmission within the maximum channel occupation duration, and a starting position and a maximum channel occupation duration of the base station for performing data downlink transmission within the maximum channel occupation duration.
In the above embodiment of the present invention, optionally, the step of determining a frame structure of communication transmission according to the transmission parameter in the uplink control information specifically includes: and determining the starting position and the stopping position of the terminal for performing the data uplink transmission within the maximum channel occupation duration according to the starting position indication for performing the data uplink transmission, the number of occupied subframes, the positions of the occupied subframes, the subframe interval configuration and the total length occupied by the transmission in the uplink control information.
In the above embodiment of the present invention, optionally, the uplink transmission may also be a retransmission after the downlink transmission.
In the above embodiment of the present invention, optionally, the step of determining a frame structure of communication transmission according to the transmission parameter in the uplink control information further includes: determining a first possible starting position of downlink transmission according to a stopping position of the terminal for performing data uplink transmission within the maximum channel occupying time; initiating an LBT at the first possible starting position; when the LBT is successful, determining the first possible starting position as the starting position for carrying out data downlink transmission; when LBT fails, selecting a second possible starting position after the first possible starting position to initiate LBT, and determining a position capable of successfully initiating LBT as the starting position for performing data downlink transmission until LBT succeeds, wherein the type and/or parameters of LBT of the terminal in the maximum channel occupying duration may be different from those of LBT of the terminal outside the maximum channel occupying duration.
In the above embodiment of the present invention, optionally, one uplink control information of the terminal is provided, and carries all transmission parameters; or the uplink control information of the terminal is multiple, where each uplink control information carries all the transmission parameters, or each uplink control information carries a corresponding part of the transmission parameters.
In the foregoing embodiment of the present invention, optionally, the transmission parameter in the uplink control information includes a maximum channel occupancy duration.
In the above embodiment of the present invention, optionally, the transmission parameter in the uplink control information further includes a length of a preamble signal for performing uplink transmission.
In the above embodiment of the present invention, optionally, the step of determining a frame structure of communication transmission according to the transmission parameter in the uplink control information includes: and acquiring the extended channel occupation duration in the uplink control information as the maximum channel occupation duration.
In the above embodiment of the present invention, optionally, the step of determining a frame structure of communication transmission according to the transmission parameter in the uplink control information includes: acquiring the unextended first channel occupation duration in the uplink control information; judging whether a first time interval which is greater than or equal to a preset interval occurs for the first time in the initial channel occupation duration; and when the first time interval which is larger than or equal to the preset interval appears for the first time, expanding the first channel occupation time length to a second channel occupation time length, wherein the time of the first time interval appearing for the first time is in downlink transmission of the terminal, between the downlink transmission and uplink transmission of the base station, in the uplink transmission, between the uplink transmission and downlink transmission again of the terminal or in the downlink transmission again.
In the foregoing embodiment of the present invention, optionally, the step of acquiring the uplink control information issued by the terminal includes: acquiring a plurality of uplink control information issued by a plurality of terminals; the step of determining a frame structure of communication transmission according to the transmission parameter in the uplink control information includes: determining a frame structure of communication transmission corresponding to a terminal to which each uplink control information belongs according to the plurality of uplink control information; and taking 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 second aspect, an embodiment of the present invention provides a base station, including: an uplink control information acquisition unit for acquiring uplink control information issued by a terminal; and the frame structure determining unit is used for determining a frame structure of communication transmission according to the transmission parameters in the uplink control information, wherein the frame structure comprises a starting position and a stopping position of the terminal for performing data uplink transmission in the maximum channel occupation duration, and a starting position and a maximum channel occupation duration of the base station for performing data downlink transmission in the maximum channel occupation duration.
In the above embodiment of the present invention, optionally, the frame structure determining unit includes: and the uplink starting and stopping position determining unit is used for determining the starting position and the stopping position of the terminal for performing the data uplink transmission within the maximum channel occupation duration according to the starting position indication for performing the data uplink transmission, the number of occupied subframes, the positions of the occupied subframes, the subframe interval configuration and the total length occupied by the transmission in the uplink control information.
In the above embodiment of the present invention, optionally, the uplink transmission may also be a retransmission after the downlink transmission.
In the above embodiment of the present invention, optionally, the frame structure determining unit further includes: a downlink start position determining unit, configured to determine a first possible start position for downlink transmission according to a stop position where the terminal performs uplink data transmission within the maximum channel occupancy duration, and initiate LBT at the first possible start position, where when LBT succeeds, the first possible start position is determined as the start position for downlink data transmission, and when LBT fails, a second possible start position after the first possible start position is selected to initiate LBT, and until LBT succeeds, a position where LBT can be successfully initiated is determined as the start position for downlink data transmission. Wherein the type and/or parameters of the LBT for the terminal within the maximum channel occupancy duration may be different from the type and/or parameters of the LBT for the terminal outside the maximum channel occupancy duration
In the above embodiment of the present invention, optionally, one uplink control information of the terminal is provided, and carries all transmission parameters; or the uplink control information of the terminal is multiple, where each uplink control information carries all the transmission parameters, or each uplink control information carries a corresponding part of the transmission parameters.
In the foregoing embodiment of the present invention, optionally, the transmission parameter in the uplink control information includes a maximum channel occupancy duration.
In the above embodiment of the present invention, optionally, the transmission parameter in the uplink control information further includes a length of a preamble signal for performing uplink transmission.
In the above embodiment of the present invention, optionally, the frame structure determining unit includes: and a maximum channel occupation duration determining unit, configured to obtain the extended channel occupation duration in the uplink control information, as the maximum channel occupation duration.
In the above embodiment of the present invention, optionally, the frame structure determining unit includes: a maximum channel occupation duration determining unit, configured to obtain an unexpanded first channel occupation duration in the uplink control information, and determine whether a first time interval greater than or equal to a predetermined interval first occurs within the initial channel occupation duration; and when the first time interval which is larger than or equal to the preset interval appears for the first time, expanding the first channel occupation time length to a second channel occupation time length, wherein the time of the first time interval appearing for the first time is in downlink transmission of the terminal, between the downlink transmission and uplink transmission of the base station, in the uplink transmission, between the uplink transmission and downlink transmission again of the terminal or in the downlink transmission again.
In the above embodiment of the present invention, optionally, the uplink control information obtaining unit is configured to: acquiring a plurality of uplink control information issued by a plurality of terminals; and the frame structure determining unit is configured to: and determining a frame structure of communication transmission corresponding to the terminal to which each uplink control information belongs according to the uplink control information, and taking the union of the frame structures of the communication transmission corresponding to the terminals as the final frame structure of the communication transmission.
In a third aspect, an embodiment of the present invention provides a base station, including a transmitter, a receiver, a memory, and a processor respectively connected to the transmitter, the receiver, and the memory, where the receiver is configured to obtain uplink control information issued by a terminal; the memory has stored therein instructions executable by the processor, and the processor is configured to invoke the instructions stored by the memory to perform the following operations: and determining a frame structure of communication transmission according to the transmission parameters in the uplink control information, wherein the frame structure comprises a starting position and a stopping position of the terminal for performing data uplink transmission within the maximum channel occupation duration, and a starting position and a maximum channel occupation duration of the base station for performing data downlink transmission within the maximum channel occupation duration.
According to the technical scheme, the terminal can issue the uplink control information for scheduling aiming at a series of problems caused by centralized scheduling taking the base station as the center in the related technology, so that the base station can determine the maximum channel occupation time, the starting position and the stopping position of uplink transmission and the starting position of downlink transmission according to the uplink control information issued by the terminal, acquire a complete frame structure, simplify the work of the base station, reduce time delay and improve the success rate of LBT.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
FIG. 1 shows a flow diagram of a frame structure determination method according to one embodiment of the invention;
FIG. 2 is a diagram showing a frame structure distribution of channel occupation durations in the embodiment shown in FIG. 1;
FIG. 3 shows a block diagram of a base station according to an embodiment of the invention;
fig. 4 shows a block diagram of a base station according to another embodiment of the invention.
[ detailed description ] embodiments
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the examples of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
Fig. 1 shows a flow chart of a frame structure determination method according to an embodiment of the invention.
As shown in fig. 1, the frame structure determining method includes:
and 102, acquiring uplink control information issued by the terminal.
And step 104, determining a frame structure of communication transmission according to the transmission parameters in the uplink control information.
The frame structure comprises an initial position and a stop position of the terminal for performing data uplink transmission within the maximum channel occupation time, and an initial position and a maximum channel occupation time of the base station for performing data downlink transmission within the maximum channel occupation time.
Therefore, the terminal can issue the uplink control information for scheduling, so that the base station can determine the maximum channel occupation time, the starting position and the stopping position of uplink transmission and the starting position of downlink transmission according to the uplink control information issued by the terminal, acquire a complete frame structure, directly perform downlink transmission within the uplink transmission channel occupation time, reduce time delay and improve the success rate of LBT.
In an implementation manner of this embodiment, step 104 specifically includes: and determining the starting position and the stopping position of the terminal for carrying out the data uplink transmission within the maximum channel occupation duration according to the starting position indication for carrying out the data uplink transmission, the number of occupied subframes, the positions of the occupied subframes, the subframe interval configuration and the total length occupied by the transmission in the uplink control information.
That is to say, the transmission parameters in the uplink control information may include the content of the start position indication for performing uplink data transmission, the number of occupied subframes, the position of occupied subframes, subframe interval configuration, the total length occupied for transmission, and the like, and through these transmission parameters, the base station may determine the start position and the stop position of the terminal for performing uplink data transmission, so as to further determine the start position and the maximum channel occupation duration of downlink transmission.
It should be added that the terminal may carry the transmission parameters in any one or more of the issued uplink control information, DMRS (demodulation reference signal) sequence and preamble sequence, so that the base station can perform acquisition or detection. The carried transmission parameters may further include the length of the preamble signal for uplink transmission, so that the base station subtracts the length of the preamble signal for uplink transmission before calculating the start position and the stop position of the terminal for uplink data transmission, so as to obtain a more accurate start position and stop position of the terminal for uplink data transmission.
In an implementation manner of this embodiment, the uplink transmission may also be a retransmission after the downlink transmission. In other words, if the uplink transmission between the terminal and the base station and the downlink transmission between the base station and the terminal are completed within the total channel occupation time corresponding to the uplink transmission, the re-uplink transmission between the terminal and the base station may also be initiated, and the start position and the stop position of the re-uplink transmission may also be 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, there is one uplink control information of the terminal, and the uplink control information carries all transmission parameters.
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 problem occurs in issuing or receiving a single uplink control information, it can still be ensured that other backups are issued by the terminal or received by the base station, and the effectiveness of communication is improved. Or, each piece of uplink control information carries a corresponding part of transmission parameters.
In one implementation manner of this embodiment, if a plurality of terminals issue a plurality of pieces of uplink control information, the frame structure of the communication transmission corresponding to the terminal to which each piece of uplink control information belongs may be determined, and the union (i.e., the maximum occupied time after the union) of the frame structures of the communication transmissions corresponding to the plurality of terminals is used as the frame structure of the final communication transmission. Optionally, the frame structure of the final communication transmission may also be determined according to the uplink control information of one of the terminals.
In an implementation manner of this embodiment, the transmission parameter in the uplink control information includes an extended channel occupation duration, that is, a maximum channel occupation duration, so that the base station can directly obtain the maximum channel occupation duration and further determine whether the channel occupation duration needs to be extended.
In an implementation manner of this embodiment, an unexpanded first channel occupation duration in the uplink control information is obtained, and it is determined whether a first time interval greater than or equal to a predetermined interval first occurs within the initial channel occupation duration; and when the first time interval which is larger than or equal to the preset interval appears for the first time, expanding the first channel occupation time length to a second channel occupation time length, wherein the time of the first time interval appearing for the first time is in downlink transmission of the terminal, between the downlink transmission and uplink transmission of the base station, in the uplink transmission, between the uplink transmission and downlink transmission again of the terminal or in the downlink transmission again.
The above implementation is described in detail with reference to specific scenarios.
The base station may notify the terminal whether there is another technology sharing the current carrier through RRC (radio resource control), and the terminal may determine MCOT (maximum channel occupancy duration) according to the notification.
Here, when the abseneofanoother technology-r14 is true, it indicates that no other technology shares the current carrier, and at this time, when the channel access priority is 3 or 4, the length of the MCOT (maximum channel occupancy duration) is 10ms, whereas, when the absenenoother technology-r14 is not true (for example, the indication is not sent), it indicates that another technology shares the current carrier, and when the channel access priority is 3 or 4, the length of the MCOT is 6 ms.
Thus, the terminal may indicate the channel access priority in the uplink control information (e.g., G-UCI), e.g., 2-bit corresponds to 1, 2, 3, 4 to look up table 1 to obtain the corresponding MCOT, where 3 or 4 is not different for the MCOT and therefore may not be distinguished.
TABLE 1
Alternatively, the terminal may directly obtain, in the uplink control information, the length of the MCOT, for example, 2-bit: 2ms, 3ms, 6ms, 10 ms. Specifically, when the terminal is able to determine that the current channel has another technology shared channel and the channel access priority is 3 or 4, and meets the condition that the MCOT extends from 6ms to 8ms, the length of the MCOT or the channel access priority may be notified in the uplink control information
Examples of the length of the notification MCOT are as follows:
when absenceof anyother technology-r14 is not sent, 2-bit: 2ms, 3ms, 6ms and 8 ms; when absenceof anyother technology-r14 is sent, 2-bit: 2ms, 3ms, 10ms, NA/10 ms.
Examples of informing the channel access priority are as follows:
when absenceof anyother technology-r14 is not sent, 2-bit: 1, 2, 3 or 4 extends to 8 msMCOT; when absenceof anyother technology-r14 is sent, 2-bit: 1,2,3,4. Where 3 or 4 are indistinguishable from MCOT and therefore also indistinguishable.
In addition, in addition to the above notification, the base station may further determine whether or not a condition that the MCOT extends from 6ms to 8ms is satisfied in combination with one or more of the start position, the end position, and the earliest start position of the uplink transmission in the uplink control information. The condition that the MCOT extends from 6ms to 8ms is that an interval larger than 100 μ s exists in a time not larger than 6ms, wherein the first preset channel occupation duration is 6ms, the second preset channel occupation duration is 8ms, and the preset interval is 100 μ s.
Further, when the absenceof anyother technology-r14 is not transmitted, in case that the channel access priority adopted by the terminal is 3 or 4, and the condition that the MCOT extends from 6ms to 8ms is not satisfied within the first predetermined channel occupancy duration (i.e., there is no interval greater than 100 μ s), the base station determines whether to extend the MCOT from 6ms to 8ms according to whether an interval between uplink transmission and downlink transmission (e.g., an interval caused by LBT) satisfies greater than 100 μ s. If the uplink transmission between the terminal and the base station and the downlink transmission between the base station and the terminal are completed within the channel occupation time corresponding to the total uplink transmission, the base station may also initiate the uplink transmission between the terminal and the base station again.
For example, when abseneofandother technology-r14 is not transmitted, the information indicated by the uplink control information includes: the channel access priority is 3, the uplink transmission occupies 4ms and no interval larger than 100 mus exists in the middle, and the base station is requested to send downlink signals at the rest of the MCOT. If the base station starts to send the downlink at the second slot of the 5ms after the channel access is successful, the MCOT can be judged to be expanded to 8ms because the interval between the uplink transmission and the downlink transmission is more than 100 mus. If the base station starts to send downlink in the first slot of the 5 th ms, it can be determined that the MCOT maintains 6ms because the interval between the uplink transmission and the downlink transmission is less than 100 μ s.
In an implementation manner of this embodiment, step 104 further includes: determining a first possible initial position of downlink transmission according to a stop position of a terminal for performing data uplink transmission within a maximum channel occupation time; initiating an LBT at a first possible starting location; when the LBT is successful, determining a first possible initial position as an initial position for carrying out data downlink transmission; when LBT fails, selecting a second possible starting position after the first possible starting position to initiate LBT, and determining a position capable of successfully initiating LBT as a starting position for data downlink transmission until LBT succeeds, wherein the LBT of the terminal in the maximum channel occupying duration may be different from the LBT of the terminal outside the maximum channel occupying duration in type and/or parameter.
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 attempt LBT before the subframe boundary of the subframe N, initiate downlink transmission at the subframe boundary of the subframe N when LBT is successful, and attempt LBT at the next possible downlink transmission position when LBT is unsuccessful, where the next possible downlink transmission position may be any position such as the boundary of the second slot of the subframe N or the starting boundary of the subframe N + 1.
In addition, the manner of indicating that downlink transmission is the starting position in the uplink control information for the terminal may include the following implementation manners:
1. the base station starts to perform downlink transmission at the indicated position;
2. the base station starts downlink transmission within the window length from the indicated downlink position;
3. the terminal only indicates the downlink request and the uplink transmission duration, and the base station determines the downlink starting position according to the uplink transmission ending position;
4. the terminal only indicates the downlink request and the uplink transmission time length, and the base station determines the downlink starting position according to the uplink transmission ending position and starts to perform downlink transmission in the window length.
All four implementations described above may require LBT first.
Fig. 2 shows a frame structure distribution diagram of the channel occupation duration in the embodiment shown in fig. 1.
As shown in fig. 2, the base station may be continuously scheduled to perform downlink transmission within the remaining time after performing uplink transmission within the entire channel occupation duration of uplink transmission, and if there is remaining time after performing downlink transmission by the base station, the base station may continuously schedule the terminal to perform uplink transmission, for example, uplink transmission triggered by C-PDCCH trigger B.
In addition, it is to be added that downlink control information (e.g., G-DCI) fed back for uplink transmission (e.g., GUL) can be transmitted in the last full subframe or the last ending subframe of the downlink transmission.
Fig. 3 shows a block diagram of a base station according to an embodiment of the invention.
As shown in fig. 3, the base station 300 includes: an uplink control information obtaining unit 302, which obtains uplink control information issued by a terminal; the frame structure determining unit 304 determines a frame structure of communication transmission according to the transmission parameters in the uplink control information, where the frame structure includes a start position and a stop position where the terminal performs uplink data transmission within the maximum channel occupancy duration, and a start position and a maximum channel occupancy duration where the base station performs downlink data transmission within the maximum channel occupancy duration.
In the above embodiment of the present invention, optionally, the frame structure determining unit 304 includes: the uplink start-stop position determining unit 3042 determines the start position and the stop position of the terminal for performing the uplink data transmission within the maximum channel occupation duration according to the start position indication for performing the uplink data transmission in the uplink control information, the number of occupied subframes, the position of the occupied subframes, the subframe interval configuration, and the total length occupied by transmission.
In the above embodiment of the present invention, optionally, the frame structure determining unit 304 further includes: a downlink start position determining unit 3044, determining a first possible start position for downlink transmission according to a stop position of a terminal for performing uplink data transmission within a maximum channel occupying duration, and initiating LBT at the first possible start position, where when LBT succeeds, the first possible start position is determined as a start position for performing downlink data transmission, and when LBT fails, a second possible start position after the first possible start position is selected for initiating LBT, until LBT succeeds, a position where LBT can be successfully initiated is determined as a start position for performing downlink data transmission, where LBT within the maximum channel occupying duration of the terminal may be different from LBT outside the maximum channel occupying duration of the terminal in type and/or parameter.
In the above embodiment of the present invention, optionally, one uplink control information of the terminal is provided, and carries all transmission parameters; or the uplink control information of the terminal is multiple, wherein each uplink control information carries all transmission parameters, or each uplink control information carries a corresponding part of transmission parameters.
In the above embodiment of the present invention, optionally, the transmission parameter in the uplink control information includes a maximum channel occupancy duration.
In the above embodiment of the present invention, optionally, the transmission parameter in the uplink control information further includes a length of a preamble for performing uplink transmission.
In another implementation manner of this embodiment, the frame structure determining unit 304 includes: the maximum channel occupying duration determining unit 3046 obtains the extended channel occupying duration in the uplink control information as the maximum channel occupying duration.
In another implementation manner of this embodiment, the maximum duration of channel occupancy determination unit 3046 is: acquiring unexpanded first channel occupation duration in the uplink control information, and judging whether a first time interval greater than or equal to a preset interval occurs for the first time in the initial channel occupation duration; and when the first time interval which is larger than or equal to the preset interval appears for the first time, expanding the first channel occupation time length to a second channel occupation time length, wherein the time of the first time interval appearing for the first time is in downlink transmission of the terminal, between the downlink transmission and uplink transmission of the base station, in the uplink transmission, between the uplink transmission and downlink transmission again of the terminal or in the downlink transmission again.
In the foregoing embodiment of the present invention, optionally, the uplink control information obtaining unit 302 is configured to: acquiring a plurality of uplink control information issued by a plurality of terminals; and a frame structure determination unit 304 for: and determining a frame structure of communication transmission corresponding to the terminal to which each uplink control information belongs according to the plurality of uplink control information, and taking the union of the frame structures of the communication transmission corresponding to the plurality of terminals as the final frame structure of the communication transmission.
Fig. 4 shows a block diagram of a base station according to another embodiment of the invention.
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, where the receiver 421 is configured to obtain uplink control information issued by the terminal; the memory 423 stores instructions executable by the processor 424, and the processor 424 is configured to call the instructions stored by the memory 423 to perform the following operations: and determining a frame structure of communication transmission according to the transmission parameters in the uplink control information, wherein the frame structure comprises a starting position and a stopping position of the terminal for performing data uplink transmission within the maximum channel occupation duration, and a starting position and a maximum channel occupation duration of the base station for performing data downlink transmission within the maximum channel occupation duration.
In one implementation of the invention, processor 424 is configured to call instructions stored by memory 423 to perform the following operations:
the step of determining a frame structure of communication transmission according to a transmission parameter in the uplink control information specifically includes: and determining the starting position and the stopping position of the terminal for carrying out the data uplink transmission within the maximum channel occupation duration according to the starting position indication for carrying out the data uplink transmission, the number of occupied subframes, the positions of the occupied subframes, the subframe interval configuration and the total length occupied by the transmission in the uplink control information.
In an implementation manner of the present invention, the uplink transmission may also be a re-upload transmission after the downlink transmission.
In one implementation of the present invention, processor 424 is configured to call instructions stored by memory 423, and may further perform the following operations:
determining a first possible initial position of downlink transmission according to a stop position of a terminal for performing data uplink transmission within a maximum channel occupation time; initiating an LBT at a first possible starting location; when the LBT is successful, determining a first possible initial position as an initial position for carrying out data downlink transmission; when the LBT fails, selecting a second possible starting position after the first possible starting position to initiate the LBT, and determining a position capable of successfully initiating the LBT as a starting position for performing data downlink transmission until the LBT succeeds, wherein the type and/or parameters of the LBT of the terminal within the maximum channel occupying duration may be different from those of the LBT of the terminal outside the maximum channel occupying duration.
The uplink control information of the terminal is one and carries all transmission parameters; or the uplink control information of the terminal is multiple, wherein each uplink control information carries all transmission parameters, or each uplink control information carries a corresponding part of transmission parameters.
The transmission parameters in the uplink control information include a maximum channel occupation duration.
The transmission parameters in the uplink control information further include the length of the preamble signal for uplink transmission.
In one implementation of the invention, processor 424 is configured to call instructions stored by memory 423 and may perform the following operations:
and acquiring the extended channel occupation time in the uplink control information as the maximum channel occupation time.
In one implementation of the invention, processor 424 is configured to call instructions stored by memory 423 and may perform the following operations:
acquiring the unextended first channel occupation duration in the uplink control information; judging whether a first time interval which is greater than or equal to a preset interval occurs for the first time within the initial channel occupation duration; and when a first time interval which is larger than or equal to a preset interval is determined to occur for the first time, the first channel occupation time length is extended to a second channel occupation time length, wherein the time of the first time interval occurring for the first time is in downlink transmission of the terminal, between the downlink transmission and uplink transmission of the base station, between the uplink transmission and downlink transmission again of the terminal or in downlink transmission again.
In one implementation of the invention, processor 424 is configured to call instructions stored by memory 423 and may perform the following operations:
acquiring a plurality of uplink control information issued by a plurality of terminals; the step of determining the frame structure of the communication transmission according to the transmission parameters in the uplink control information comprises the following steps: determining a frame structure of communication transmission corresponding to a terminal to which each uplink control information belongs according to the plurality of uplink control information; and taking 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.
The technical scheme of the invention is described in detail in the above with reference to the accompanying drawings, and by the technical scheme of the invention, the terminal can issue the uplink control information for scheduling, so that the base station can acquire a complete frame structure according to the uplink control information issued by the terminal, and directly perform downlink transmission within the occupied time of an uplink transmission channel, thereby reducing the time delay and improving the success rate of LBT.
It should be understood that although the terms first, second, etc. may be used to describe time intervals in embodiments of the present invention, these time intervals should not be limited by these terms. These terms are only used to distinguish time intervals from each other. For example, a first time interval may also be referred to as a second time interval, and similarly, a second time interval may also be referred to as a first time interval, without departing from the scope of embodiments of the present invention.
The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It should be noted that the terminal according to the embodiment of the present invention may include, but is not limited to, a Personal Computer (PC), a Personal Digital Assistant (PDA), a wireless handheld device, a Tablet Computer (Tablet Computer), a mobile phone, an MP3 player, an MP4 player, and the like.
In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (19)
1. A method for determining a frame structure, comprising:
acquiring uplink control information issued by a terminal;
and determining a frame structure of communication transmission according to the transmission parameters in the uplink control information, wherein the frame structure comprises a starting position and a stopping position of the terminal for performing data uplink transmission within the maximum channel occupation duration, and a starting position and a maximum channel occupation duration of the base station for performing data downlink transmission within the maximum channel occupation duration.
2. The method for determining a frame structure according to claim 1, wherein the step of determining a frame structure of communication transmission according to the transmission parameter in the uplink control information specifically includes:
and determining the starting position and the stopping position of the terminal for performing the data uplink transmission within the maximum channel occupation duration according to the starting position indication for performing the data uplink transmission, the number of occupied subframes, the positions of the occupied subframes, the subframe interval configuration and the total length occupied by the transmission in the uplink control information.
3. The method according to claim 2, wherein the step of determining the frame structure of the communication transmission according to the transmission parameter in the uplink control information further comprises:
determining a first possible starting position of downlink transmission according to a stopping position of the terminal for performing data uplink transmission within the maximum channel occupying time;
initiating an LBT at the first possible starting position;
when the LBT is successful, determining the first possible starting position as the starting position for carrying out data downlink transmission;
when LBT fails, selecting a second possible starting position after the first possible starting position to initiate LBT, and determining a position capable of successfully initiating LBT as the starting position for performing data downlink transmission until LBT succeeds, wherein the type and/or parameters of LBT of the terminal in the maximum channel occupying duration may be different from those of LBT of the terminal outside the maximum channel occupying duration.
4. The method 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, wherein each uplink control information carries all the transmission parameters, or each uplink control information carries a corresponding part of the transmission parameters.
5. The method according to any of claims 1 to 4, wherein the transmission parameter in the uplink control information comprises a maximum channel occupancy duration.
6. The method according to claim 5, wherein the transmission parameters in the uplink control information further include a length of a preamble for uplink transmission.
7. The method according to any one of claims 1 to 4, wherein the step of determining the frame structure of the communication transmission according to the transmission parameter in the uplink control information comprises:
and acquiring the extended channel occupation duration in the uplink control information as the maximum channel occupation duration.
8. The method according to any one of claims 1 to 4, wherein the step of determining the frame structure of the communication transmission according to the transmission parameter in the uplink control information comprises:
acquiring the unextended first channel occupation duration in the uplink control information;
judging whether a first time interval which is greater than or equal to a preset interval occurs for the first time within the initial channel occupation duration;
and when the first time interval which is larger than or equal to the preset interval appears for the first time, expanding the first channel occupation time length to a second channel occupation time length, wherein the time of the first time interval appearing for the first time is in downlink transmission of the terminal, between the downlink transmission and uplink transmission of the base station, in the uplink transmission, between the uplink transmission and downlink transmission again of the terminal or in the downlink transmission again.
9. The method according to any one of claims 1 to 4, wherein the step of obtaining the uplink control information issued by the terminal includes:
acquiring a plurality of uplink control information issued by a plurality of terminals;
the step of determining a frame structure of communication transmission according to the transmission parameter in the uplink control information includes:
determining a frame structure of communication transmission corresponding to a terminal to which each uplink control information belongs according to the plurality of uplink control information;
and taking 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.
10. A base station, comprising:
an uplink control information acquisition unit for acquiring uplink control information issued by a terminal;
and the frame structure determining unit is used for determining a frame structure of communication transmission according to the transmission parameters in the uplink control information, wherein the frame structure comprises a starting position and a stopping position of the terminal for performing data uplink transmission in the maximum channel occupation duration, and a starting position and a maximum channel occupation duration of the base station for performing data downlink transmission in the maximum channel occupation duration.
11. The base station of claim 10, wherein the frame structure determining unit comprises:
and the uplink starting and stopping position determining unit is used for determining the starting position and the stopping position of the terminal for performing the data uplink transmission within the maximum channel occupation duration according to the starting position indication for performing the data uplink transmission, the number of occupied subframes, the positions of the occupied subframes, the subframe interval configuration and the total length occupied by the transmission in the uplink control information.
12. The base station of claim 11, wherein the frame structure determining unit further comprises:
a downlink starting position determining unit, configured to determine a first possible starting position of downlink transmission according to a stop position of the terminal for performing uplink data transmission within the maximum channel occupancy duration, and initiate LBT at the first possible starting position, where,
when LBT succeeds, determining the first possible starting position as the starting position for performing data downlink transmission, and when LBT fails, selecting a second possible starting position after the first possible starting position to perform LBT initiation, until LBT succeeds, determining a position capable of successfully initiating LBT as the starting position for performing data downlink transmission, where LBT within the maximum channel occupancy duration of the terminal may be different from types and/or parameters of LBT outside the maximum channel occupancy duration of the terminal.
13. The base station of claim 10, 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, wherein each uplink control information carries all the transmission parameters, or each uplink control information carries a corresponding part of the transmission parameters.
14. The base station according to any of claims 10 to 13, wherein the transmission parameter in the uplink control information comprises a maximum channel occupancy duration.
15. The base station of claim 14, wherein the transmission parameters in the uplink control information further include a length of a preamble signal for uplink transmission.
16. The base station according to any of claims 10 to 13, wherein the frame structure determining unit comprises:
and a maximum channel occupation duration determining unit, configured to obtain the extended channel occupation duration in the uplink control information, as the maximum channel occupation duration.
17. The base station according to any of claims 10 to 13, wherein the frame structure determining unit comprises:
a maximum channel occupation duration determining unit, configured to obtain an unexpanded first channel occupation duration in the uplink control information, and determine whether a first time interval greater than or equal to a predetermined interval first occurs within an initial channel occupation duration; and when the first time interval which is larger than or equal to the preset interval appears for the first time, expanding the first channel occupation time length to a second channel occupation time length, wherein the time of the first time interval appearing for the first time is in downlink transmission of the terminal, between the downlink transmission and uplink transmission of the base station, in the uplink transmission, between the uplink transmission and downlink transmission again of the terminal or in the downlink transmission again.
18. The base station according to any of claims 10 to 13, wherein the uplink control information obtaining unit is configured to:
acquiring a plurality of uplink control information issued by a plurality of terminals; and
the frame structure determination unit is configured to:
and determining a frame structure of communication transmission corresponding to the terminal to which each uplink control information belongs according to the uplink control information, and taking the union of the frame structures of the communication transmission corresponding to the terminals as the final frame structure of the communication transmission.
19. A base station comprising a transmitter, a receiver, a memory, and a processor coupled to the transmitter, the receiver, and the memory,
the receiver is used for acquiring uplink control information issued by the terminal;
the memory has stored therein instructions executable by the processor, and the processor is configured to invoke the instructions stored by the memory to perform the following operations:
and determining a frame structure of communication transmission according to the transmission parameters in the uplink control information, wherein the frame structure comprises a starting position and a stopping position of the terminal for performing data uplink transmission within the maximum channel occupation duration, and a starting position and a maximum channel occupation duration of the base station for performing data downlink transmission within the maximum channel occupation duration.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710150988.3A CN106851839B (en) | 2017-03-14 | 2017-03-14 | Frame structure determining method and base station |
| PCT/CN2018/078386 WO2018166392A1 (en) | 2017-03-14 | 2018-03-08 | Frame structure determining method and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710150988.3A CN106851839B (en) | 2017-03-14 | 2017-03-14 | Frame structure determining method and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106851839A CN106851839A (en) | 2017-06-13 |
| CN106851839B true CN106851839B (en) | 2020-06-12 |
Family
ID=59144517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710150988.3A Active CN106851839B (en) | 2017-03-14 | 2017-03-14 | Frame structure determining method and base station |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106851839B (en) |
| WO (1) | WO2018166392A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114375053A (en) | 2017-11-17 | 2022-04-19 | 华为技术有限公司 | Data transmission method, terminal equipment and network equipment |
| CN109995483B (en) | 2017-12-29 | 2020-09-04 | 华为技术有限公司 | Transmission method and device of TRS section |
| CN110062464B (en) * | 2018-01-19 | 2023-05-09 | 华为技术有限公司 | Method and apparatus for managing channel occupation duration of unlicensed band |
| CN116506087A (en) | 2018-01-19 | 2023-07-28 | 华为技术有限公司 | Method and apparatus for managing channel occupation duration of unlicensed band |
| EP3809772A4 (en) | 2018-06-15 | 2021-07-07 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for determining uplink and downlink switching points |
| CN112314026A (en) | 2018-06-26 | 2021-02-02 | Oppo广东移动通信有限公司 | Uplink signal transmission method, terminal equipment and network equipment |
| CN110831159B (en) * | 2018-08-07 | 2022-04-12 | 华为技术有限公司 | Information transmission method and device |
| SG11202101363SA (en) | 2018-08-17 | 2021-03-30 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Signal transmission method, terminal device and network device |
| WO2020087424A1 (en) * | 2018-10-31 | 2020-05-07 | Oppo广东移动通信有限公司 | Data transmission method, terminal device and storage medium |
| WO2020140224A1 (en) | 2019-01-03 | 2020-07-09 | 北京小米移动软件有限公司 | Channel detection method and apparatus |
| CN111107637B (en) * | 2019-03-25 | 2022-04-01 | 维沃移动通信有限公司 | Method and apparatus for sharing channel occupation time |
| CN114845417A (en) * | 2020-01-09 | 2022-08-02 | Oppo广东移动通信有限公司 | Information determining method, information indicating method, terminal equipment and network equipment |
| WO2021147062A1 (en) * | 2020-01-23 | 2021-07-29 | Qualcomm Incorporated | User equipment as initiating device in frame based equipment mode |
| CN114731621A (en) * | 2020-02-17 | 2022-07-08 | 中兴通讯股份有限公司 | Zero setting method and system in wireless communication network |
| CN113434280A (en) * | 2021-07-15 | 2021-09-24 | 湖北央中巨石信息技术有限公司 | Method for dynamically adjusting scheduling interval based on time |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840931A (en) * | 2012-11-23 | 2014-06-04 | 电信科学技术研究院 | Data transmission method and device in time-division duplex TDD guard band |
| WO2016053639A1 (en) * | 2014-10-02 | 2016-04-07 | Qualcomm Incorporated | Contention based uplink transmissions for latency reduction |
| CN105578573A (en) * | 2015-05-28 | 2016-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Authorized frequency band channel occupation time configuration method and device |
| CN105991216A (en) * | 2015-01-30 | 2016-10-05 | 上海贝尔股份有限公司 | Method for configuration uplink frame structure based on LTE frame structure type 2 |
| CN106162658A (en) * | 2015-04-24 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of method of data transmission |
| CN106301738A (en) * | 2016-06-28 | 2017-01-04 | 宇龙计算机通信科技(深圳)有限公司 | Communication means based on frame structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8923880B2 (en) * | 2012-09-28 | 2014-12-30 | Intel Corporation | Selective joinder of user equipment with wireless cell |
| CN105357162B (en) * | 2014-08-22 | 2020-12-11 | 中兴通讯股份有限公司 | Signal processing method, base station and terminal |
| CN105636231B (en) * | 2014-11-05 | 2019-01-25 | 电信科学技术研究院 | A kind of channel-monitoring method and apparatus |
| CN105992373B (en) * | 2015-01-30 | 2020-09-15 | 中兴通讯股份有限公司 | Data transmission method, device, base station and user equipment |
-
2017
- 2017-03-14 CN CN201710150988.3A patent/CN106851839B/en active Active
-
2018
- 2018-03-08 WO PCT/CN2018/078386 patent/WO2018166392A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103840931A (en) * | 2012-11-23 | 2014-06-04 | 电信科学技术研究院 | Data transmission method and device in time-division duplex TDD guard band |
| WO2016053639A1 (en) * | 2014-10-02 | 2016-04-07 | Qualcomm Incorporated | Contention based uplink transmissions for latency reduction |
| CN105991216A (en) * | 2015-01-30 | 2016-10-05 | 上海贝尔股份有限公司 | Method for configuration uplink frame structure based on LTE frame structure type 2 |
| CN106162658A (en) * | 2015-04-24 | 2016-11-23 | 中兴通讯股份有限公司 | A kind of method of data transmission |
| CN105578573A (en) * | 2015-05-28 | 2016-05-11 | 宇龙计算机通信科技(深圳)有限公司 | Authorized frequency band channel occupation time configuration method and device |
| CN106301738A (en) * | 2016-06-28 | 2017-01-04 | 宇龙计算机通信科技(深圳)有限公司 | Communication means based on frame structure |
Non-Patent Citations (1)
| Title |
|---|
| On Autonomous UL Transmissions for NR in Unlicensed Spectrum;Ericsson;《3GPP TSG RAN WG1 AH_NR Meeting R1-1701135》;20170110;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106851839A (en) | 2017-06-13 |
| WO2018166392A1 (en) | 2018-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106851839B (en) | Frame structure determining method and base station | |
| KR101901219B1 (en) | Transmission method and communications device | |
| CN111316737B (en) | Data transmission method, terminal equipment and network equipment | |
| CN110167035B (en) | Beam management method, terminal, network device and storage medium | |
| US10609632B2 (en) | SRS sending method, SRS sending device and terminal | |
| CN108632981B (en) | Downlink synchronization signal sending method, receiving method and equipment | |
| CN107919929B (en) | Channel detection method and device based on wave beams | |
| CN111108800B (en) | Communication method and device | |
| CN106922032B (en) | Data time domain transmission method, control method, terminal, base station and baseband chip | |
| CN104322134B (en) | Access method, device and base station | |
| EP3468289B1 (en) | Signal transmission method and apparatus | |
| US20210176017A1 (en) | HARQ Feedback Method And Apparatus | |
| CN112584539B (en) | Random access method and device | |
| CN110062464B (en) | Method and apparatus for managing channel occupation duration of unlicensed band | |
| CN110267226B (en) | Information sending method and device | |
| CN114389721A (en) | Channel occupation time sharing method, device, system and storage medium | |
| CN113364568A (en) | Method, terminal and base station for sending uplink control information | |
| CN113169835A (en) | Data transmission method and device | |
| CN112118630B (en) | Resource allocation method, device and storage medium | |
| WO2020088362A1 (en) | Method and apparatus for transmitting indication information | |
| CN107155409A (en) | A kind of signaling method and equipment | |
| CN108174454B (en) | Information processing method and device | |
| CN111130721B (en) | Data transmission method and device | |
| CA3046573C (en) | Random access method and apparatus | |
| CN116506087A (en) | Method and apparatus for managing channel occupation duration of unlicensed band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100094 9 / F, 10 / F, building 1, zone 1, 81 Beiqing Road, Haidian District, Beijing Patentee after: Beijing baicaibang Technology Co.,Ltd. Address before: 100085 Beijing Haidian District city information industry base development road 1, 3 tier 3001 Patentee before: Beijing Bai Caibang Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address |