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WO2017101667A1 - Procédé de commande de détection de canal, et dispositif associé - Google Patents

Procédé de commande de détection de canal, et dispositif associé Download PDF

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Publication number
WO2017101667A1
WO2017101667A1 PCT/CN2016/107551 CN2016107551W WO2017101667A1 WO 2017101667 A1 WO2017101667 A1 WO 2017101667A1 CN 2016107551 W CN2016107551 W CN 2016107551W WO 2017101667 A1 WO2017101667 A1 WO 2017101667A1
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WIPO (PCT)
Prior art keywords
terminal
base station
information
time
scheduling request
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PCT/CN2016/107551
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English (en)
Chinese (zh)
Inventor
乔梁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Jinli Communication Equipment Co Ltd
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Shenzhen Jinli Communication Equipment Co Ltd
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Publication of WO2017101667A1 publication Critical patent/WO2017101667A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • 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
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel detection control method and related device.
  • LAA Licensed Assisted Access
  • LTE Long Term Evolution
  • the transmitting node needs to perform LBT detection to detect whether the transport channel is available. Therefore, there will be some unnecessary LBT detection; in addition, excessive LBT detection will result in increased power consumption of the transmission node.
  • the embodiment of the invention provides a channel detection control method and related device, which can reduce the number of LBT detections and reduce the power consumption of the device.
  • a first aspect of the embodiments of the present invention provides a channel detection control method, which is applied to an authorized auxiliary access LAA technology, and includes:
  • the operation for transmitting the uplink grant information is not performed after the LBT detection is performed.
  • a second aspect of the embodiments of the present invention provides a channel detection control method, which is applied to an authorized auxiliary access LAA technology, and includes:
  • the base station is the same as the carrier used by the first terminal for downlink data transmission and the carrier used by the second terminal for the PUSCH transmission.
  • a third aspect of the embodiments of the present invention provides a channel detection control method, which is applied to an authorized auxiliary access LAA technology, and includes:
  • the terminal After the terminal randomly accesses the base station, the terminal sends a scheduling request to the base station by using a physical uplink control channel (PUCCH);
  • PUCCH physical uplink control channel
  • the terminal receives the uplink grant information and the indication information that are sent by the base station in response to the scheduling request, where the indication information is used to indicate that the terminal responds to the uplink grant information and performs physical uplink shared channel PUSCH transmission with the base station.
  • the start time and the identifier information for indicating whether to perform the LBT detection after the listener is performed, when the start time of the PUSCH transmission and the deadline information included by the base station for the downlink data transmission with the first terminal include When the interval is within the preset time range, or when the system subframe number corresponding to the PUSCH transmission and the system subframe number corresponding to the cutoff time include the interval of the system subframe number in the preset time range When the number of frame symbols is within, the identifier information of whether to perform LBT detection is configured by the base station not to perform the LBT detection;
  • the identifier information of whether the LBT detection is performed is used to indicate whether the terminal performs the LBT detection operation, the carrier used by the base station and the first terminal for downlink data transmission, and the PUSCH of the terminal The carrier used for transmission is the same.
  • a fourth aspect of the embodiments of the present invention provides a base station, including:
  • An obtaining unit configured to acquire deadline information for performing downlink data transmission with the first terminal
  • a receiving unit configured to receive a scheduling request sent by a second terminal that is randomly accessed by using a physical uplink control channel (PUCCH), where the base station and the first terminal use a carrier for downlink data transmission and the second terminal
  • PUCCH physical uplink control channel
  • a first determining unit configured to determine, according to the cutoff time information and the preset time range, a time for sending the uplink grant information to the second terminal in response to the scheduling request, so that the base station sends the second base terminal to the second terminal
  • the operation for transmitting the uplink grant information is not performed after the LBT detection is performed.
  • a fifth aspect of the embodiments of the present invention provides a base station, including:
  • An obtaining unit configured to acquire deadline information for performing downlink data transmission with the first terminal
  • a receiving unit configured to receive a scheduling request sent by the second terminal of the random access through the physical uplink control channel PUCCH;
  • a sending unit configured to send uplink authorization information to the second terminal in response to the scheduling request, and Instructing information, where the indication information includes a start time for indicating that the second terminal performs physical uplink shared channel PUSCH transmission with the base station in response to the uplink grant information, and indicating whether to perform LBT detection after listening
  • the identifier information when the interval between the start time of the PUSCH transmission and the cutoff time included in the cutoff time information is within a preset time range, or the system subframe number corresponding to the PUSCH transmission and the deadline information When the interval of the system subframe number corresponding to the cutoff time is within the number of subframe symbols corresponding to the preset time range, whether the identifier information for performing LBT detection is configured by the base station not to perform the LBT detection, And the operation of performing the LBT detection on the PUSCH when the second terminal and the base station perform the PUSCH transmission, where the identifier information of whether the LBT detection is performed is used to indicate whether the second terminal is Performing the operation of the
  • a sixth aspect of the embodiments of the present invention provides a terminal, including:
  • a sending unit configured to send a scheduling request to the base station by using a physical uplink control channel (PUCCH) after the terminal randomly accesses the base station;
  • PUCCH physical uplink control channel
  • a receiving unit configured to receive uplink authorization information and indication information that is sent by the base station in response to the scheduling request, where the indication information is used to indicate that the terminal performs a physical uplink shared channel PUSCH with the base station in response to the uplink grant information.
  • the interval of the cutoff time is within the preset time range, or the interval between the system subframe number corresponding to the PUSCH transmission and the system subframe number corresponding to the cutoff time included in the cutoff time information corresponds to the preset time range
  • the identifier information of whether to perform LBT detection is configured by the base station not to perform the LBT detection;
  • a determining unit configured to determine, according to the indication information, a start time of performing the PUSCH transmission with the base station, so that the terminal does not perform the LBT detection on the PUSCH when performing the PUSCH transmission with the base station Operation
  • the identifier information of whether the LBT detection is performed is used to indicate whether the terminal performs the LBT detection operation, the carrier used by the base station and the first terminal for downlink data transmission, and the PUSCH of the terminal The carrier used for transmission is the same.
  • the base station may acquire the deadline information of the downlink data transmission with the first terminal, and receive the scheduling of the second terminal that is randomly connected to the same terminal as the first terminal. And determining, according to the deadline information and the preset time range, a time for sending the uplink authorization information to the second terminal in response to the scheduling request, so that the base station may send the uplink authorization information when sending the uplink authorization information to the second terminal.
  • the channel does not perform the operation of the LBT detection after listening first.
  • the time for the base station to send the uplink grant information to the terminal is dynamically adjusted, so that the interval between the adjusted time for sending the uplink grant information and the cutoff time for the downlink data transmission of the previous terminal is within a preset time range.
  • the LBT detection is not performed on the channel for transmitting the uplink grant information. Thereby reducing the number of times the base station performs LBT detection and reducing the power consumption of the base station.
  • FIG. 1 is a schematic flowchart of a channel detection control method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart diagram of another method for controlling channel detection according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of uplink and downlink data transmission according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of still another method for controlling channel detection according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of another uplink and downlink data transmission according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of still another method for controlling channel detection according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of still another base station according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of another terminal according to an embodiment of the present invention.
  • the embodiment of the present invention provides a channel detection control method and related equipment, which dynamically adjusts the time when the base station sends the uplink grant information to the terminal, so that the adjusted time for transmitting the uplink grant information and the end of the downlink data transmission of the previous terminal are
  • LBT detection is not performed on the channel for transmitting the uplink grant information, thereby reducing the number of LBT detections and reducing the power consumption of the device.
  • FIG. 1 is a schematic flowchart diagram of a channel detection control method according to an embodiment of the present invention.
  • the channel detection control method can be applied to the authorized auxiliary access LAA technology to expand the use of the unlicensed spectrum based on the licensed spectrum.
  • an LBT detection technique can be introduced after listening.
  • the process is generally: before the signal transmission, the transmitting node (base station or terminal) needs to perform CCA (Clear Channel Assessment) detection on the transmission channel, where the energy detection method can be used to determine that when the energy of the transmission channel exceeds When a certain threshold is used, the transmission channel can be considered occupied, the transmission node cannot transmit on the transmission channel, and the transmission channel is observed during the CCA detection time; when the energy of the transmission channel is lower than a certain threshold, the transmission can be considered as the transmission. The channel is idle, and the transmitting node can perform data transmission on the channel.
  • CCA Carrier Channel Assessment
  • the embodiment of the invention discloses a scheme, when the interval between the downlink data transmission and the start time of the data transmission of the transmission node is within a specific range (which may be a preset time range) under the same carrier and the same base station.
  • the transmission node (base station or terminal) may not need to perform LBT detection. This not only helps to improve the efficiency of the system, but also significantly reduces the power consumption of the transmission node.
  • the method for controlling channel detection may include the following steps:
  • the base station acquires deadline information for performing downlink data transmission with the first terminal.
  • the base station in the LAA technology, can work in the licensed frequency band or Working in an unlicensed band.
  • the deadline information of the downlink data transmission may be obtained, and the first terminal may include a mobile phone, a tablet computer, a palmtop computer, a personal digital assistant (PDA), and a mobile internet.
  • a device Mobile Internet Device, MID
  • a smart wearable device such as a smart watch, a smart wristband, etc.
  • the cutoff time information may include, but is not limited to, at least one of a cutoff time (ie, an end time of downlink data transmission) and a system subframe number corresponding to the cutoff time.
  • the cutoff time may be converted into a corresponding system subframe number according to a preset rule, where the system subframe number corresponding to the cutoff time is a system subframe number corresponding to the base station and the second terminal, for example, the base station and the second terminal in the LTE system transmit Corresponding system subframe number.
  • the preset rule may be an existing conversion method, which is not limited in the embodiment of the present invention.
  • the specific implementation manner of the step 101 that the base station acquires the deadline information for performing downlink data transmission with the first terminal may include the following steps:
  • the base station performs downlink data transmission with the first terminal by using a physical downlink shared channel (PDSCH), and the downlink data transmission carries a reference signal, so that the first terminal demodulates the reference signal and feeds back the PDSCH to the base station.
  • PDSCH physical downlink shared channel
  • the base station determines the deadline information of the downlink data transmission according to the channel state information.
  • the base station when performing downlink data transmission with the first terminal, may perform quality estimation on the channel by including a reference signal in the PDSCH, and after receiving the reference signal, the first terminal demodulates the reference signal.
  • the channel state information of the PDSCH is fed back to the base station, and the base station can estimate the deadline information of the current downlink data transmission according to the channel state information.
  • the maximum downlink transmission time supported is 32 ms, and the cutoff time of the downlink data transmission may be delayed by 32 ms for the start time of the current downlink data transmission.
  • the reference signal may be a CRS (Cell Reference Signal), a DMRS (Demodulation Reference Signal), a CSI-RS (Channel State Information Reference Signal), or the like.
  • the embodiment of the invention is not limited.
  • the channel state information, that is, CSI may include, but is not limited to, PMI (Precoding Matrix Indicator), CQI (Channel Quality Indicator), RI (Rand Indicator), and PTI (Precoding). Type Indicator, Precoding type indication) and so on.
  • the base station receives a scheduling request sent by the second terminal that is randomly accessed by using the physical uplink control channel PUCCH.
  • the first terminal and the second terminal may be the same terminal, or may be two different terminals, which are not limited in the embodiment of the present invention.
  • the second terminal may include various types of terminals, such as a mobile phone, a tablet, a PDA, a PDA, a MID, a smart wearable device (such as a smart watch, a smart wristband, etc.), which are not limited in the embodiment of the present invention.
  • the second terminal when the same carrier is in the same base station, the second terminal may initiate random access to the base station to successfully access the base station.
  • the second terminal may send a scheduling request to the base station by using UCI (Uplink Control Information) of the PUCCH (Physical Uplink Control Channel) in addition to the Scheduling Request (SR) transmission.
  • UCI Uplink Control Information
  • PUCCH Physical Uplink Control Channel
  • SR Scheduling Request
  • the same carrier of the first terminal and the second terminal can be understood as the carrier used by the base station and the first terminal for downlink data transmission, and the base station is the same as the carrier used by the second terminal for PUCCH transmission. Wherein one or more channels may be included under one carrier.
  • the base station determines, according to the cutoff time information and the preset time range, a time for sending the uplink grant information to the second terminal in response to the scheduling request, so that when the base station sends the uplink grant information to the second terminal, the base station is configured to transmit the uplink grant.
  • the channel of the information is not subjected to the operation of the LBT detection after listening first.
  • the base station may respond to the scheduling request when the priority of the second terminal can be scheduled under the current base station and the uplink resource can be scheduled. And sending uplink grant information (Uplink Grant, UL grant) to the second terminal.
  • the base station may determine, according to the deadline information of the downlink data transmission of the first terminal and the preset time range, the time for sending the uplink grant information, so that the determined uplink grant information is sent, in order to reduce the LBT detection that is not necessary for the base station to perform the transmission.
  • the time interval between the time and the deadline information included in the downlink data transmission of the first terminal and the downlink data of the first terminal is within a preset time range, or the system subframe number corresponding to the uplink authorization information is corresponding to the deadline included in the deadline information.
  • the interval of the system subframe number is within the number of subframe symbols corresponding to the preset time range.
  • the determined time for sending the uplink grant information is a time point, and may also be a time range.
  • the preset time range is a time triggering threshold of the LBT detection, and the time triggering threshold may be 35 microseconds (us), or 25 us, or 16 us or less than 16 us, and the like, which is not limited in the embodiment of the present invention.
  • the time trigger threshold is 16us
  • the preset time range is 0 ⁇ 16us. If the cutoff time is a millisecond (ms), the time range for sending the uplink grant information is (a-16*10 -3 , a+ 16*10 -3 ).
  • the deadline information includes a cutoff time
  • the step 103 determines, according to the cutoff time information and the preset time range, a specific implementation manner of the time for sending the uplink grant information to the second terminal in response to the scheduling request, where The following steps:
  • the base station determines, according to the deadline, a time for sending the uplink grant information to the second terminal in response to the scheduling request, so that the interval between the cutoff time and the time for sending the uplink grant information is within a preset time range.
  • the base station when the interval between the downlink time of the downlink transmission of the base station and the first terminal and the time when the base station sends the uplink authorization information to the second terminal are within a preset time range, when the base station sends the uplink authorization information to the second terminal, The LBT detection is not performed on the channel used for transmitting the uplink grant information, that is, the base station can directly send the uplink grant information on the channel without detecting whether the channel for transmitting the uplink grant information is available.
  • the deadline information includes a system subframe number corresponding to the deadline
  • the step 103 determines, according to the deadline information and the preset time range, that the uplink authorization information is sent to the second terminal in response to the scheduling request.
  • the specific implementation of time includes the following steps:
  • the base station determines, according to the system subframe number corresponding to the cutoff time, a time for sending the uplink grant information to the second terminal in response to the scheduling request, so that the system subframe number corresponding to the cutoff time is a system subframe corresponding to the uplink grant information.
  • the interval of the number is within the number of subframe symbols corresponding to the preset time range.
  • the system subframe number corresponding to the cutoff time of the downlink data transmission of the first terminal and the system subframe number corresponding to the base station transmitting the uplink grant information to the second terminal are in the preset time range.
  • the base station sends the uplink grant information to the second terminal, the base station does not perform LBT detection on the channel for transmitting the uplink grant information, that is, the base station does not need to detect whether the channel for transmitting the uplink grant information is available, and may directly
  • the uplink grant information is sent on the channel.
  • the number of subframe symbols is the difference between the subframe numbers.
  • the base station may acquire the deadline information of the downlink data transmission with the first terminal, and receive the scheduling request sent by the second terminal that is the same as the first terminal of the first terminal, and according to the deadline.
  • the time and the preset time range are determined to be sent to the second terminal in response to the scheduling request.
  • the time of the uplink grant information, so that when the base station sends the uplink grant information to the second terminal, the operation for transmitting the uplink grant information may not be performed after the LBT detection is performed.
  • the time for the base station to send the uplink grant information to the terminal can be dynamically adjusted, so that the interval between the adjusted time for sending the uplink grant information and the deadline for the downlink data transmission of the previous terminal is at a preset time.
  • the LBT detection is not performed on the channel for transmitting the uplink grant information in the range. Thereby reducing the number of times the base station performs LBT detection and reducing the power consumption of the base station.
  • FIG. 2 is a schematic flowchart diagram of another method for controlling channel detection according to an embodiment of the present invention.
  • the channel detection control method can be applied to the authorized auxiliary access LAA technology to expand the use of the unlicensed spectrum based on the licensed spectrum.
  • the method for controlling channel detection may include the following steps:
  • the base station acquires deadline information for performing downlink data transmission with the first terminal.
  • the cutoff time information may include, but is not limited to, at least one of a cutoff time (ie, an end time of downlink data transmission) and a system subframe number corresponding to the cutoff time.
  • the base station receives a scheduling request sent by the second terminal that is randomly accessed by using the physical uplink control channel PUCCH.
  • the first terminal and the second terminal may be the same terminal, or may be two different terminals, and the base station and the first terminal use downlink carrier data transmission, and the base station and the second terminal perform PUCCH transmission.
  • the carrier used is the same.
  • the second terminal may periodically send a scheduling request to the base station. When the base station receives the scheduling request sent by the second terminal, the base station may not be scheduled or has no available uplink resources because the priority of the second terminal is too low. Instead of responding to the scheduling request, the second terminal periodically sends a scheduling request to the base station until the base station responds.
  • the base station determines, according to the cutoff time information and the preset time range, a time for sending the uplink grant information to the second terminal in response to the scheduling request, so that when the base station sends the uplink grant information to the second terminal, the base station transmits the uplink grant information.
  • the channel does not perform the operation of the LBT detection after listening first.
  • the preset time range is a time triggering threshold of the LBT detection, and the time triggering threshold may be 35 us, or 25 us, or 16 us or less than 16 us, and the like, which is not limited in the embodiment of the present invention.
  • the base station counts the number of times the scheduling request sent by the second terminal is received within the target time.
  • the target time is a time interval when the base station first receives the scheduling request sent by the second terminal to the determined critical time for transmitting the uplink authorization information.
  • the time for transmitting the uplink grant information determined by the deadline information and the preset time range may be a time range, and the critical time for transmitting the uplink grant information is the boundary of the time range.
  • the base station determines whether the number of times is less than or equal to a preset maximum retransmission threshold. If yes, step 206 is performed; if no, step 207 is performed.
  • the preset maximum retransmission threshold is a preset maximum number of times that the second terminal is allowed to repeatedly send a scheduling request to the base station.
  • the preset maximum retransmission threshold can be preset and stored in the base station.
  • the base station sends the uplink authorization information to the second terminal without performing the LBT detection operation, in response to the scheduling request sent by the second terminal received by the Nth time.
  • the base station may not send the second request to the second terminal without responding to the scheduling request, if the determined time for transmitting the uplink authorization information is not to perform the LBT detection.
  • the uplink authorization information may be selected to continue to wait.
  • the second terminal may periodically send a scheduling request to the base station. Each time the base station receives the scheduling request, the base station may determine to send the uplink to the second terminal in response to the scheduling request.
  • the time of the authorization information still satisfies the condition that the LBT detection is not performed, that is, whether the interval between the time when the uplink authorization information is sent to the second terminal in response to the scheduling request and the deadline included in the deadline information remains within the preset time range.
  • the time until the uplink grant information is sent to the second terminal tends to a critical value.
  • the base station sends the uplink grant information in a waiting manner, and dynamically adjusts the time for transmitting the uplink grant information, so that the base station can communicate with other terminals connected to the base station while waiting for the uplink grant information to be sent, thereby improving communication efficiency.
  • the base station when the number of times the scheduling request sent by the second terminal is received in the target time is less than or equal to the preset maximum retransmission threshold, that is, the number of times does not exceed the preset maximum retransmission threshold.
  • the time when the uplink authorization information is sent has reached the critical value.
  • the base station does not continue to wait, and can respond to the scheduling request sent by the second terminal received by the Nth time, and send the uplink authorization information to the second terminal without performing the LBT detection operation.
  • N is a positive integer not greater than the number of times.
  • the base station sends the uplink authorization information to the second terminal without performing the LBT detection operation, in response to the scheduling request sent by the second terminal received by the Mth.
  • the second terminal when the number of times the scheduling request sent by the second terminal is received in the target time is greater than the preset maximum retransmission threshold, it means that the uplink authorization information is sent when the number exceeds the preset maximum retransmission threshold.
  • the time has not yet reached the critical value.
  • the second terminal can only send the scheduling request with the same number of times as the preset maximum retransmission threshold to the base station, and the base station can respond to the scheduling of the second terminal received by the Mth time.
  • the request is to send the uplink authorization information to the second terminal without performing the LBT detection operation, where M is a positive integer not greater than a preset maximum retransmission threshold.
  • the second terminal may perform a PUSCH (Physical Uplink Shared Channel) transmission with the base station in response to the uplink grant information.
  • PUSCH Physical Uplink Shared Channel
  • the base station may control the second terminal in the subframe according to the TA (Timing Advance) configured by the base station to the second terminal.
  • PUSCH transmission is performed on n+k (k is a positive integer not less than 0).
  • k is 4
  • TDD Time Division Duplex
  • FIG. 3 is a schematic diagram of uplink and downlink data transmission according to an embodiment of the present invention.
  • each small cell represents one subframe.
  • the base station may control the second terminal to perform PUSCH transmission on at least the n+4th subframe.
  • the interval between the deadline of the downlink data transmission between the base station and the first terminal and the time when the base station sends the uplink authorization information is within a preset time range.
  • the preset time range in which the above base station does not need to perform LBT detection is defined as a subframe boundary. Considering that the unit after the sub-frame is converted into time is milliseconds, the time range unit here should also be milliseconds, and the symbols in the subframe should also be Convert to the corresponding milliseconds. Of course, in view of the time unit of LBT detection, the range unit can also be microseconds.
  • the start node of the second terminal uplink burst or the downlink transmission cutoff time of the first terminal is not located at the boundary, the remaining symbols in the subframe send a start signal for downlink coarse synchronization and/or channel reservation ( Initial signal) or reservation signal.
  • the time for the base station to send the uplink grant information to the terminal can be dynamically adjusted, thereby reducing the number of times the base station performs LBT detection and reducing the power consumption of the base station.
  • the concept of the maximum threshold for sending a scheduling request by the terminal is introduced, and the time for transmitting the uplink authorization information can be more flexibly adjusted.
  • FIG. 4 is a schematic flowchart diagram of still another method for controlling channel detection according to an embodiment of the present invention.
  • the channel detection control method can be applied to the authorized auxiliary access LAA technology to expand the use of the unlicensed spectrum based on the licensed spectrum.
  • the method for controlling channel detection may include the following steps:
  • the base station acquires deadline information for performing downlink data transmission with the first terminal.
  • the cutoff time information may include, but is not limited to, at least one of a cutoff time and a system subframe number corresponding to the cutoff time.
  • the specific implementation manner of the step 401 base station acquiring the deadline information for performing downlink data transmission with the first terminal may include the following steps:
  • the base station performs downlink data transmission with the first terminal by using the PDSCH channel, where the downlink data transmission carries a reference signal, so that the first terminal demodulates the reference signal and feeds back channel state information of the PDSCH to the base station;
  • the base station determines the deadline information of the downlink data transmission according to the channel state information.
  • the reference signal may be a CRS, a DMRS, a CSI-RS, or the like, which is not limited in the embodiment of the present invention.
  • Channel state information that is, CSI, may generally include, but is not limited to, PMI, CQI, RI, PTI, and the like.
  • the base station receives a scheduling request sent by the second terminal that is randomly accessed through the physical uplink control channel PUCCH.
  • the first terminal and the second terminal may be the same terminal, or may be two different terminals.
  • the specific implementation manner of the base station receiving the scheduling request sent by the second terminal of the random access by using the physical uplink control channel (PUCCH) may include the following steps:
  • the base station sends the uplink grant information and the indication information to the second terminal, where the indication information includes a start time for indicating that the second terminal responds to the uplink grant information and the base station performs PUSCH transmission, and is used to indicate whether to execute the first.
  • the LBT detects the identification information so that the second terminal does not perform LBT detection on the PUSCH when performing PUSCH transmission with the base station.
  • the base station when the priority of the second terminal can be scheduled under the current base station and the uplink resource can be scheduled, the base station can send the uplink authorization to the second terminal in response to the scheduling request sent by the second terminal.
  • the information may be sent to the second terminal, where the indication information may be used to indicate the start time of the second terminal in response to the uplink grant information and the base station process PUSCH transmission, and may also be used to indicate whether to perform the LBT detection identifier information.
  • the interval between the start time of the PUSCH transmission and the cutoff time included in the cutoff time information is within a preset time range, or the system subframe number corresponding to the PUSCH transmission and the system subframe number corresponding to the cutoff time included in the cutoff time information
  • the interval is within the number of subframe symbols corresponding to the preset time range, whether the above-mentioned identification information for performing LBT detection is configured by the base station not to perform LBT detection, so that the second terminal does not perform LBT on the PUSCH channel when performing PUSCH transmission with the base station. The operation of the test.
  • the identifier information of whether the LBT detection is performed is used to indicate whether the second terminal performs the LBT detection operation, and may be represented by an identifier bit, for example, 0 means no LBT detection is performed, 1 means LBT detection is performed, or 0 is performed. LBT detection, 1 means no LBT detection is performed.
  • the carrier and the base station used by the base station and the first terminal for downlink data transmission are the same as the carrier used for the PUSCH transmission performed by the second terminal.
  • the preset time range is a time triggering threshold of the LBT detection, and the time triggering threshold may be 35 us, or 25 us, or 16 us or less than 16 us, etc., which is not limited in the embodiment of the present invention.
  • the start time of the second terminal in response to the uplink grant information and the base station performing PUSCH transmission indicated by the indication information may be a time point or a time range.
  • FIG. 5 is another schematic diagram of uplink and downlink data transmission according to an embodiment of the present invention.
  • the terminal here refers to the second terminal, and each cell represents one subframe, and it is assumed that the base station transmits uplink grant information on the nth subframe (that is, the terminal receives the uplink grant in the nth subframe).
  • the second terminal may be controlled to perform PUSCH transmission on at least the n+4th subframe.
  • the interval between the cutoff time of the downlink data transmission of the base station and the first terminal and the start time of the PUSCH transmission performed by the second terminal is within a preset time range.
  • the start time of the PUSCH transmission of the terminal and the base station can be controlled, so that the start time of the PUSCH transmission is separated from the deadline of the downlink data transmission of the previous terminal terminal.
  • the LBT detection may not be performed, thereby reducing the number of times the terminal performs LBT detection and reducing the power consumption of the terminal.
  • FIG. 6 is a schematic flowchart diagram of still another method for controlling channel detection according to an embodiment of the present invention.
  • the channel detection control method can be applied to the authorized auxiliary access LAA technology to expand the use of the unlicensed spectrum based on the licensed spectrum.
  • the control method of the channel detection may include the following steps:
  • the terminal After the terminal randomly accesses the base station, the terminal sends a scheduling request to the base station by using a physical uplink control channel (PUCCH).
  • PUCCH physical uplink control channel
  • step 601 after the terminal randomly accesses the base station, the specific implementation manner in which the terminal sends a scheduling request to the base station by using the physical uplink control channel (PUCCH) may include the following steps:
  • the terminal After the terminal randomly accesses the base station, the terminal sends a scheduling request to the base station at a specific time through the physical uplink control channel PUCCH.
  • the terminal receives uplink authorization information and indication information that is sent by the base station in response to the scheduling request, where the indication information includes a start time for indicating that the terminal responds to the uplink authorization information with the base station, and an identifier for indicating whether to perform LBT detection. information.
  • the base station when the priority of the terminal can be scheduled under the current base station and the uplink resource can be scheduled, the base station can respond to the scheduling request sent by the terminal, and send the uplink authorization information to the terminal,
  • the indication information may be sent to the terminal, where the indication information may be used to indicate the start time of the terminal to perform the PUSCH transmission with the base station in response to the uplink authorization information, and may also be used to indicate whether to perform the LBT detection identifier information, when the start time of the PUSCH transmission is
  • the system that the base station acquires the cutoff time information of the downlink data transmission with the first terminal includes the cutoff time within the preset time range, or the system corresponding to the cutoff time included in the cutoff time information corresponding to the system subframe number corresponding to the PUSCH transmission When the interval of the subframe number is within the number of subframe symbols corresponding to the preset time range, whether the above-mentioned identification information for performing LBT detection is configured by the base station to not perform LBT detection.
  • the terminal and the first terminal may be the same terminal, or may be different terminals.
  • the carrier and the base station used by the base station and the first terminal for downlink data transmission are performed with the terminal
  • the carrier used for PUSCH transmission is the same.
  • the base station when the base station transmits the uplink grant information on the subframe n (n is a positive integer not less than 0), the base station may control the terminal to be in the subframe according to the timing advance TA configured by the base station to the terminal.
  • PUSCH transmission is performed on n+k (k is a positive integer not less than 0).
  • k is 4; in the TDD system, k is greater than or equal to 4.
  • the preset time range is a time trigger threshold of the LBT detection.
  • the time-triggered threshold may be 35 us, or 25 us, or 16 us or less than 16 us, etc., which is not limited in the embodiment of the present invention.
  • the terminal determines, according to the indication information, a start time for performing PUSCH transmission with the base station, so that the terminal does not perform an LBT detection operation on the PUSCH when performing the PUSCH transmission with the base station.
  • the terminal when the base station transmits the uplink grant information on the nth subframe (that is, the terminal receives the uplink grant information on the nth subframe), the terminal may control the terminal in at least the n+4th sub-interface.
  • PUSCH transmission is performed on the frame.
  • the cutoff time of the downlink data transmission between the base station and the first terminal and the start time of the PUSCH transmission performed by the base station and the terminal are within a preset time range.
  • the terminal may perform LBT detection when performing PUSCH transmission, thereby reducing the number of times the terminal performs LBT detection and reducing the power consumption of the terminal.
  • FIG. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention, for performing a channel detection control method provided by an embodiment of the present invention.
  • the base station may include:
  • the obtaining unit 701 is configured to acquire deadline information for performing downlink data transmission with the first terminal.
  • the base station in the LAA technology, can work in both the licensed frequency band and the unlicensed frequency band.
  • the deadline information of the downlink data transmission may be obtained.
  • the deadline information may include, but is not limited to, at least one of a deadline (ie, an end time of downlink data transmission) and a system subframe number corresponding to the deadline.
  • the cutoff time can be converted into a corresponding system subframe number according to a preset rule, where the system subframe corresponding to the cutoff time
  • the number is a system subframe number corresponding to the base station and the second terminal, for example, the system subframe number corresponding to the base station and the second terminal transmission in the LTE system.
  • the preset rule may be an existing conversion method, which is not limited in the embodiment of the present invention.
  • the receiving unit 702 is configured to receive a scheduling request that is sent by the second terminal that is randomly accessed by using the physical uplink control channel PUCCH.
  • the first terminal and the second terminal may be the same terminal, or may be two different terminals, which are not limited in the embodiment of the present invention.
  • the second terminal Under the same carrier and the base station, the second terminal may initiate random access to the base station to successfully access the base station.
  • the second terminal may send a scheduling request to the base station through the UCI of the PUCCH on the basis of supporting the scheduling request transmission.
  • the same carrier of the first terminal and the second terminal can be understood as the carrier used by the base station and the first terminal for downlink data transmission, and the base station is the same as the carrier used by the second terminal for PUCCH transmission.
  • the first determining unit 703 is configured to determine, according to the cutoff time information and the preset time range, a time for sending the uplink grant information to the second terminal in response to the scheduling request, so that the base station sends the uplink grant information to the second terminal.
  • the channel for transmitting the uplink grant information does not perform the operation of the LBT detection after listening first.
  • the receiving unit 702 may respond to the scheduling if the priority of the second terminal can be scheduled under the current base station and the uplink resource can be scheduled. Requesting and sending uplink authorization information to the second terminal.
  • the first determining unit 703 may determine, according to the foregoing information about the downlink time of the downlink data transmission of the first terminal and the preset time range stored in the base station, the sending uplink is obtained by the acquiring unit 701.
  • the time of the authorization information so that the determined time for transmitting the uplink authorization information is within a preset time range between the time interval of the base station and the deadline information of the downlink data transmission of the first terminal, or the system corresponding to the uplink authorization information is sent.
  • the interval between the subframe number corresponding to the cutoff time included in the cutoff time information and the system subframe number is within the number of subframe symbols corresponding to the preset time range.
  • the determined time for sending the uplink grant information is a time point, and may also be a time range.
  • the preset time range is a time triggering threshold of the LBT detection, and the time triggering threshold may be 35 us, or 25 us, or 16 us or less than 16 us, and the like, which is not limited in the embodiment of the present invention.
  • the first determining unit 703 determines, according to the cutoff time information and the preset time range, the time for sending the uplink grant information to the second terminal in response to the scheduling request.
  • the specific implementation may be:
  • the first determining unit 703 determines, according to the cutoff time, a time for sending the uplink grant information to the second terminal in response to the scheduling request, so that the interval between the cutoff time and the time for sending the uplink grant information is within a preset time range.
  • the first determining unit 703 determines, according to the deadline information and the preset time range, that the scheduling request is sent to the second terminal.
  • the specific implementation time of the uplink authorization information may be:
  • the first determining unit 703 determines, according to the system subframe number corresponding to the cutoff time, a time for sending the uplink grant information to the second terminal in response to the scheduling request, so that the system subframe number corresponding to the cutoff time is corresponding to the system that sends the uplink grant information.
  • the interval of the subframe number is within the number of subframe symbols corresponding to the preset time range.
  • FIG. 8 is a schematic structural diagram of another base station according to an embodiment of the present invention, for performing a channel detection control method provided by an embodiment of the present invention.
  • the base station shown in FIG. 8 is further optimized based on the base station shown in FIG. 7.
  • the acquiring unit 701 in the base station shown in FIG. 8 may include:
  • the transmitting unit 7011 is configured to perform downlink data transmission with the first terminal by using the physical downlink shared channel PDSCH, where the downlink data transmission carries a reference signal, so that the first terminal demodulates the reference signal and feeds back channel state information of the PDSCH to the base station;
  • the second determining unit 7012 is configured to determine, according to the channel state information, deadline information of the downlink data transmission.
  • the reference signal may be a CRS, a DMRS, a CSI-RS, or the like, which is not limited in the embodiment of the present invention.
  • Channel state information that is, CSI, may generally include, but is not limited to, PMI, CQI, RI, PTI, and the like.
  • the base station shown in FIG. 8 may further include:
  • the statistics unit 704 is configured to count the number of times the scheduling request sent by the second terminal is received in the target time, where the target time is the time when the base station first receives the scheduling request sent by the second terminal to the determined critical time for sending the uplink authorization information. time interval;
  • the determining unit 705 is configured to determine whether the number of times is less than or equal to a preset maximum retransmission threshold
  • the sending unit 706 is configured to: when the determining unit 705 determines that the number of times is less than or equal to the preset maximum retransmission threshold, responding to the scheduling request sent by the second terminal received by the Nth time, without performing the LBT detection operation
  • the second terminal sends the uplink authorization information, where N is a positive integer not greater than the number of times;
  • the sending unit 706 is further configured to: when the determining unit 705 determines that the number of times is greater than a preset maximum retransmission threshold, responding to the scheduling request sent by the second terminal received by the Mth, without performing the LBT detection operation
  • the second terminal sends the uplink authorization information, where M is a positive integer that is not greater than a preset maximum retransmission threshold.
  • the time for the base station to send the uplink grant information to the terminal can be dynamically adjusted, thereby reducing the number of times the base station performs LBT detection and reducing the power consumption of the base station.
  • the concept of the maximum threshold for sending a scheduling request by the terminal is introduced, and the time for transmitting the uplink authorization information can be more flexibly adjusted.
  • FIG. 9 is a schematic structural diagram of another base station according to an embodiment of the present invention, for performing a channel detection control method provided by an embodiment of the present invention.
  • the base station 900 can include at least one processor 901, such as a CPU (Central Processing Unit), at least one input device 902, at least one output device 903, a memory 904, and the like. Among them, these components are communicatively connected by one or more buses 905.
  • processor 901 such as a CPU (Central Processing Unit)
  • input device 902 at least one input device 902
  • the output device 903 a memory 904, and the like.
  • these components are communicatively connected by one or more buses 905.
  • the structure of the base station shown in FIG. 9 does not constitute a limitation on the embodiment of the present invention. It may be a bus-shaped structure or a star-shaped structure, and may include more than the illustration or Fewer parts, or a combination of some parts, or different parts. among them:
  • the input device 902 may include a wired interface, a wireless interface, and the like, and may be used to receive signals transmitted by the terminal for uplink.
  • the output device 903 can include a wired interface, a wireless interface, etc., and can be used to downlink signals to the terminal and the like.
  • the memory 904 may be a high speed RAM memory or a non-unstable memory, such as at least one disk memory.
  • the memory 904 can also optionally be at least one storage device located remotely from the aforementioned processor 901. As shown in FIG. 9, the application program, the data, and the like may be included in the memory 904, which is not limited by the embodiment of the present invention.
  • the processor 901 can be used to call an application stored in the memory 904. Order to do the following:
  • the control input device 902 receives a scheduling request sent by the second terminal of the random access through the physical uplink control channel PUCCH, where the base station uses the same carrier used by the downlink data transmission of the first terminal and the carrier used by the PUCCH transmission of the second terminal;
  • the channel transmitting the uplink grant information does not perform the operation of the LBT detection after listening first.
  • the first terminal and the first terminal may be the same terminal, or may be different terminals.
  • the preset time range is the time trigger threshold for LBT detection.
  • the time-triggered threshold may be 35 us, or 25 us, or 16 us or less than 16 us, etc., which is not limited in the embodiment of the present invention.
  • the specific implementation manner of the processor 901 acquiring the deadline information for performing downlink data transmission with the first terminal may be:
  • the control output device 903 performs downlink data transmission with the first terminal through the physical downlink shared channel PDSCH, and the downlink data transmission carries a reference signal, so that the first terminal demodulates the reference signal and feeds back channel state information of the PDSCH to the base station;
  • the cutoff time information of the downlink data transmission is determined according to the channel state information.
  • the deadline information includes a cutoff time
  • the processor 901 determines, according to the cutoff time information and the preset time range stored in the memory 904, that the uplink authorization information is sent to the second terminal in response to the scheduling request.
  • the specific implementation of time can be:
  • the cutoff time information includes a system subframe number corresponding to the cutoff time
  • the processor 901 determines, according to the cutoff time information and the preset time range stored in the memory 904, to respond to the scheduling request to the second
  • the specific implementation manner of the time when the terminal sends the uplink authorization information may be:
  • the time of the uplink grant information is such that the interval between the system subframe number corresponding to the cutoff time and the system subframe number corresponding to the uplink grant information is within the number of subframe symbols corresponding to the preset time range stored in the memory 904.
  • the processor 901 may also call an application stored in the memory 904 and perform the following operations:
  • the target time is the time interval from the time when the base station first receives the scheduling request sent by the second terminal to the determined critical time for transmitting the uplink authorization information
  • the control output device 903 When the number of times is less than or equal to the preset maximum retransmission threshold stored in the memory 904, in response to the scheduling request sent by the second terminal received by the input device 902 for the Nth time, the control output device 903 does not perform the LBT detection operation. Sending uplink authorization information to the second terminal, where N is a positive integer not greater than the number of times;
  • the control output device 903 sends an uplink grant to the second terminal without performing the LBT detection operation, in response to the scheduling request sent by the second terminal received by the input device 902.
  • M is a positive integer not greater than the preset maximum retransmission threshold.
  • the base station introduced in the embodiment of the present invention may implement some or all of the processes in the embodiment of the method for controlling channel detection introduced in conjunction with FIG. 1 or FIG.
  • the time for the base station to send the uplink grant information to the terminal can be dynamically adjusted, thereby reducing the number of times the base station performs LBT detection and reducing the power consumption of the base station.
  • the concept of the maximum threshold for sending a scheduling request by the terminal is introduced, and the time for transmitting the uplink authorization information can be more flexibly adjusted.
  • FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention, for performing a channel detection control method provided by an embodiment of the present invention.
  • the base station may include:
  • the obtaining unit 1001 is configured to acquire the deadline information for performing downlink data transmission with the first terminal.
  • the cutoff time information may include, but is not limited to, at least one of a cutoff time and a system subframe number corresponding to the cutoff time.
  • the receiving unit 1002 is configured to receive a scheduling request sent by the second terminal that is randomly accessed by using the physical uplink control channel PUCCH.
  • the first terminal and the second terminal may be the same terminal, or may be two different terminals.
  • the receiving unit 1002 may be specifically configured to receive a scheduling request that the second terminal that is randomly accessed sends to the base station at a specific time through the physical uplink control channel PUCCH.
  • the sending unit 1003 is configured to send the uplink grant information and the indication information to the second terminal, where the indication information includes a start for indicating that the second terminal responds to the uplink grant information with the base station to perform physical uplink shared channel PUSCH transmission.
  • Time and indication information for indicating whether to perform LBT detection after listening when the interval between the start time of the PUSCH transmission and the cutoff time included in the cutoff time information is within a preset time range, or when the PUSCH transmits the corresponding system
  • the interval between the frame number and the system subframe number corresponding to the cutoff time includes the number of subframe symbols corresponding to the preset time range, whether the identifier information for performing the LBT detection is configured by the base station not to perform the LBT detection, When the second terminal and the base station perform PUSCH transmission, the LBT detection operation is not performed on the PUSCH.
  • whether the identifier information for performing the LBT detection is used to indicate whether the second terminal performs the LBT detection operation may be represented by a flag bit 0 or 1.
  • the carrier used by the base station and the first terminal for downlink data transmission is the same as the carrier used by the base station for PUSCH transmission by the second terminal.
  • the preset time range is a time triggering threshold of the LBT detection, and the time triggering threshold may be 35 us, or 25 us, or 16 us or less than 16 us, etc., which is not limited in the embodiment of the present invention.
  • the start time of the second terminal in response to the uplink grant information and the base station performing PUSCH transmission indicated by the indication information may be a time point or a time range.
  • FIG. 11 is a schematic structural diagram of another base station according to an embodiment of the present invention, for performing a channel detection control method provided by an embodiment of the present invention.
  • the base station shown in FIG. 11 is further optimized based on the base station shown in FIG. Compared with the base station shown in FIG. 10, the acquiring unit 1001 in the base station shown in FIG. 11 may include:
  • the transmitting unit 1001a is configured to perform downlink data transmission with the first terminal by using the physical downlink shared channel PDSCH, where the downlink data transmission carries a reference signal, so that the first terminal demodulates the reference signal. And feeding back, to the base station, channel state information of the PDSCH;
  • the determining unit 1001b is configured to determine the cutoff time information of the downlink data transmission according to the channel state information.
  • the reference signal may be a CRS, a DMRS, a CSI-RS, or the like, which is not limited in the embodiment of the present invention.
  • Channel state information that is, CSI, may generally include, but is not limited to, PMI, CQI, RI, PTI, and the like.
  • the start time of the PUSCH transmission of the terminal and the base station can be controlled to make the start time of the PUSCH transmission and the downlink data transmission of the previous terminal terminal.
  • the terminal may perform LBT detection when performing PUSCH transmission, thereby reducing the number of times the terminal performs LBT detection and reducing the power consumption of the terminal.
  • FIG. 12 is a schematic structural diagram of another base station according to an embodiment of the present invention, which is used to perform a channel detection control method provided by an embodiment of the present invention.
  • the base station 1200 can include at least one processor 1201, such as a CPU, at least one input device 1202, at least one output device 1203, a memory 1204, and the like. Among them, these components are communicatively connected through one or more buses 1205. It can be understood by those skilled in the art that the structure of the base station shown in FIG. 12 does not constitute a limitation on the embodiment of the present invention. It may be a bus-shaped structure or a star-shaped structure, and may include more than the figure or Fewer parts, or a combination of some parts, or different parts. among them:
  • the input device 1202 may include a wired interface, a wireless interface, and the like, and may be used to receive signals and the like transmitted by the terminal.
  • the output device 1203 may include a wired interface, a wireless interface, etc., and may be used to downlink signals and the like to the terminal.
  • the memory 1204 may be a high speed RAM memory or a non-unstable memory, such as at least one disk memory.
  • the memory 1204 can optionally also be at least one storage device located remotely from the aforementioned processor 1201. As shown in FIG. 12, the application program, the data, and the like may be included in the memory 1204, which is not limited by the embodiment of the present invention.
  • the processor 1201 can be used to call an application stored in the memory 1204 to perform the following operations:
  • the control input device 1202 receives a scheduling request sent by the second terminal of the random access through the physical uplink control channel PUCCH;
  • the control output device 1203 sends the uplink grant information and the indication information to the second terminal, where the indication information includes a start time for instructing the second terminal to perform physical uplink shared channel PUSCH transmission with the base station in response to the uplink grant information, and It is used to indicate whether to perform identification information of LBT detection after listening first;
  • the identifier information for performing the LBT detection is configured by the base station not to perform LBT detection, so that the PUSCH is not transmitted when the second terminal and the base station perform PUSCH transmission.
  • the operation of performing the LBT detection wherein the identifier information for performing the LBT detection is used to indicate whether the second terminal performs the LBT detection operation, the carrier used by the base station and the first terminal for downlink data transmission, and the PUSCH performed by the base station and the second terminal.
  • the carrier used for transmission is the same.
  • the first terminal and the first terminal may be the same terminal, or may be different terminals.
  • the preset time range is the time trigger threshold for LBT detection.
  • the time-triggered threshold may be 35 us, or 25 us, or 16 us or less than 16 us, etc., which is not limited in the embodiment of the present invention.
  • the specific implementation manner of the processor 1201 acquiring the deadline information for performing downlink data transmission with the first terminal may be:
  • the control output device 1203 performs downlink data transmission with the first terminal through the physical downlink shared channel PDSCH, where the downlink data transmission carries a reference signal, so that the first terminal demodulates the reference signal and feeds back channel state information of the PDSCH to the base station;
  • the cutoff time information of the downlink data transmission is determined according to the channel state information.
  • the processor 1201 controls the input device 1202 to receive a scheduling request that is sent by the second terminal of the random access by using the physical uplink control channel PUCCH.
  • the control input device 1202 receives a scheduling request sent by the second terminal of the random access to the base station at a specific time through the physical uplink control channel PUCCH.
  • the base station introduced in the embodiment of the present invention may implement some or all of the processes in the embodiment of the control method for channel detection introduced in conjunction with FIG. 4 of the present invention.
  • the start time of the PUSCH transmission of the terminal and the base station can be controlled, so that the start time of the PUSCH transmission is separated from the deadline of the downlink data transmission of the previous terminal terminal.
  • the LBT detection may not be performed, thereby reducing the number of times the terminal performs LBT detection and reducing the power consumption of the terminal.
  • FIG. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention, for performing a channel detection control method provided by an embodiment of the present invention.
  • the terminal may include:
  • the sending unit 1301 is configured to send a scheduling request to the base station by using a physical uplink control channel (PUCCH) after the terminal randomly accesses the base station.
  • PUCCH physical uplink control channel
  • the sending unit 1301 may be specifically configured to send a scheduling request to the base station at a specific time through the physical uplink control channel PUCCH after the terminal randomly accesses the base station.
  • the receiving unit 1302 is configured to receive uplink authorization information and indication information that are sent by the base station in response to the scheduling request, where the indication information includes a start time for indicating, by the terminal, the physical uplink shared channel (PUSCH) transmission with the base station in response to the uplink grant information, and is used for indicating Whether to perform the identification information of the LBT detection after listening, when the start time of the PUSCH transmission and the cutoff time included in the deadline information of the downlink data transmission by the first terminal are within a preset time range, or When the system subframe number corresponding to the PUSCH transmission and the system subframe number corresponding to the cutoff time include the number of subframe symbols corresponding to the preset time range, whether the identifier information for performing the LBT detection is configured by the base station In order not to perform LBT detection.
  • the indication information includes a start time for indicating, by the terminal, the physical uplink shared channel (PUSCH) transmission with the base station in response to the uplink grant information, and is used for indicating Whether to perform
  • the receiving unit 1302 may trigger the uplink authorization information sent by the base station to respond to the scheduling request.
  • the terminal and the first terminal may be the same terminal, or may be two different terminals.
  • the identifier information for performing the LBT detection is used to indicate whether the terminal performs the LBT detection operation.
  • the carrier and the base station used by the base station and the first terminal for downlink data transmission are the same as those used by the terminal for PUSCH transmission.
  • the preset time range is a time trigger threshold of the LBT detection.
  • the time-triggered threshold may be 35 us, or 25 us, or 16 us or less than 16 us, etc., which is not limited in the embodiment of the present invention.
  • the determining unit 1303 is configured to determine, according to the indication information, a start time for performing PUSCH transmission with the base station, so that the terminal does not perform an LBT detection operation on the PUSCH when performing the PUSCH transmission with the base station.
  • the start time of the PUSCH transmission performed by the terminal indicated by the base station can be received, so that the interval between the start time of the PUSCH transmission and the deadline of the downlink data transmission of the previous terminal is
  • the LBT detection may not be performed, thereby reducing the number of times the terminal performs LBT detection and reducing the power consumption of the terminal.
  • FIG. 14 is a schematic structural diagram of another terminal according to an embodiment of the present invention, for performing a channel detection control method provided by an embodiment of the present invention.
  • the terminal 1400 can include at least one processor 1401, such as a CPU, at least one input device 1402, at least one output device 1403, a memory 1404, and the like. Among them, these components are communicatively connected by one or more buses 1405.
  • the structure of the terminal shown in FIG. 14 does not constitute a limitation on the embodiment of the present invention. It may be a bus-shaped structure or a star-shaped structure, and may include more than the figure or Fewer parts, or a combination of some parts, or different parts. among them:
  • the input device 1402 may include a wired interface, a wireless interface, and the like, and may be used to obtain a signal sent by the base station in downlink.
  • the output device 1403 may include a wired interface, a wireless interface, etc., and may be used to uplink signals to the base station and the like.
  • the memory 1404 may be a high speed RAM memory or a non-volatile memory, such as at least one disk memory.
  • the memory 1404 can also optionally be at least one storage device located remotely from the aforementioned processor 1401.
  • the operating system, the application program, the data, and the like may be included in the memory 1404 as a computer storage medium, which is not limited in the embodiment of the present invention.
  • the processor 1401 can be used to call an application stored in the memory 1404 to perform the following operations:
  • the control output device 1403 After the terminal randomly accesses the base station, the control output device 1403 passes the physical uplink control channel.
  • the PUCCH sends a scheduling request to the base station;
  • the control input device 1402 receives the uplink grant information and the indication information sent by the base station in response to the scheduling request, where the indication information includes a start time for indicating, by the terminal, the physical uplink shared channel PUSCH transmission with the base station in response to the uplink grant information, and is used to indicate whether Performing the identification information of the LBT detection after listening, when the start time of the PUSCH transmission and the cutoff time included in the deadline information of the downlink data transmission by the first terminal are within a preset time range, or when When the interval between the system subframe number corresponding to the cutoff time included in the PUSCH transmission and the system subframe number corresponding to the cutoff time information is within the preset number of subframes, the identifier information for performing the LBT detection is configured by the base station as Do not perform LBT detection;
  • the identifier information for performing the LBT detection is used to indicate whether the terminal performs the LBT detection operation, and the base station and the carrier used by the first terminal for downlink data transmission and the carrier used by the base station and the terminal for PUSCH transmission are the same.
  • the terminal and the first terminal may be the same terminal, or may be different terminals.
  • the preset time range is the time trigger threshold for LBT detection.
  • the time-triggered threshold may be 35 us, or 25 us, or 16 us or less than 16 us, etc., which is not limited in the embodiment of the present invention.
  • the processor 1401 when the terminal randomly accesses the base station, and the control output device 1403 sends a scheduling request to the base station by using the physical uplink control channel (PUCCH), may be:
  • the control output device 1403 After the terminal randomly accesses the base station, the control output device 1403 sends a scheduling request to the base station at a specific time through the physical uplink control channel PUCCH.
  • the terminal introduced in the embodiment of the present invention may implement some or all of the processes in the embodiment of the control method for channel detection introduced in conjunction with FIG. 6 of the present invention.
  • the terminal by implementing the terminal shown in FIG. 14, the start time of the PUSCH transmission performed by the terminal and the base station indicated by the base station can be received, so that the start time of the PUSCH transmission and the deadline of the downlink data transmission of the previous terminal are
  • the terminal may perform LBT detection when performing PUSCH transmission, thereby reducing the number of times the terminal performs LBT detection and reducing the power consumption of the terminal.
  • Modules or sub-modules in all embodiments of the present invention may be implemented by a general-purpose integrated circuit, such as a CPU. Or implemented by an ASIC (Application Specific Integrated Circuit).
  • a general-purpose integrated circuit such as a CPU.
  • ASIC Application Specific Integrated Circuit
  • the base station and the unit in the terminal may be combined, divided, and deleted according to actual needs.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de commande de détection de canal, et un dispositif associé. Dans le procédé selon l'invention, une station de base : acquiert des informations de délai concernant un premier terminal qui exécute une transmission de données de liaison descendante ; reçoit une demande de programmation envoyée par un second terminal accédé aléatoirement via un canal physique de commande de liaison montante (PUCCH) qui est identique à une porteuse utilisée dans une transmission de données de liaison descendante par le premier terminal et une porteuse utilisée dans une transmission de PUCCH par le second terminal ; détermine, d'après les informations de délai et une plage de temps prédéterminée, l'instant d'envoi d'informations d'octroi de liaison montante au second terminal en réponse à la demande de programmation, de sorte que la station de base peut ne pas exécuter une opération de détection LBT (écouter avant de parler) sur un canal utilisé pour transmettre des informations d'octroi de liaison montante lors de l'envoi d'informations d'octroi de liaison montante. Les modes de réalisation de la présente invention permettent de réduire le nombre de détections LBT par une station de base, réduisant ainsi la consommation d'énergie de la station de base.
PCT/CN2016/107551 2015-12-17 2016-11-28 Procédé de commande de détection de canal, et dispositif associé Ceased WO2017101667A1 (fr)

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Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105611540A (zh) * 2015-12-17 2016-05-25 深圳市金立通信设备有限公司 一种信道检测的控制方法及相关设备
EP3387876B8 (fr) * 2016-06-11 2019-07-17 Ofinno, LLC Procédé d'écoute avant transmission dans un dispositif sans fil et dispositif sans fil
CN107733550A (zh) * 2016-08-11 2018-02-23 株式会社Ntt都科摩 指示和确定子帧的起始发送定时的方法、基站和用户设备
CN107888256B (zh) 2016-09-30 2022-12-02 中兴通讯股份有限公司 数据传输、接收方法、装置、基站及终端
CN111953655B (zh) * 2017-02-28 2023-03-10 华为云计算技术有限公司 一种通信系统中服务器响应请求消息的方法及设备
CN110972327B (zh) * 2018-09-28 2022-03-11 维沃移动通信有限公司 基于非授权频段的信号传输方法和通信设备
CN112087807B (zh) * 2019-06-13 2025-04-29 中兴通讯股份有限公司 一种实现上行授权的方法及装置和基站
CN119584139A (zh) * 2020-08-07 2025-03-07 Oppo广东移动通信有限公司 无线通信方法、终端设备和网络设备
WO2022217420A1 (fr) * 2021-04-12 2022-10-20 Zte Corporation Commutation entre des procédures d'accès à un canal qui comprennent et excluent la réception avant la transmission

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102648646A (zh) * 2009-12-02 2012-08-22 高通股份有限公司 用于使用带静默期的先听后讲来进行频谱共享的装置和方法
CN104581908A (zh) * 2015-01-30 2015-04-29 深圳酷派技术有限公司 非连续接收模式的参数配置方法和装置
CN105592468A (zh) * 2015-12-17 2016-05-18 深圳市金立通信设备有限公司 一种信道检测的控制方法及相关设备、系统
CN105611540A (zh) * 2015-12-17 2016-05-25 深圳市金立通信设备有限公司 一种信道检测的控制方法及相关设备
CN105933099A (zh) * 2016-06-06 2016-09-07 深圳市金立通信设备有限公司 一种传输信道探测参考信号srs的方法、终端及基站

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8867521B2 (en) * 2011-08-26 2014-10-21 Broadcom Corporation Apparatus and method for communication
CN104486013B (zh) * 2014-12-19 2017-01-04 宇龙计算机通信科技(深圳)有限公司 信道检测方法、信道检测系统、终端和基站
CN104540158B (zh) * 2015-01-12 2018-12-25 宇龙计算机通信科技(深圳)有限公司 信道检测通知方法、系统和基站
CN104717687B (zh) * 2015-04-09 2018-07-27 宇龙计算机通信科技(深圳)有限公司 信道占用概率的调整方法、调整系统和设备
CN104812032B (zh) * 2015-04-10 2018-09-07 宇龙计算机通信科技(深圳)有限公司 一种在非授权频段应用drx的方法及装置
CN105072690B (zh) * 2015-09-06 2018-08-28 魅族科技（中国）有限公司 基于非授权频谱的数据传输方法及装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102648646A (zh) * 2009-12-02 2012-08-22 高通股份有限公司 用于使用带静默期的先听后讲来进行频谱共享的装置和方法
CN104581908A (zh) * 2015-01-30 2015-04-29 深圳酷派技术有限公司 非连续接收模式的参数配置方法和装置
CN105592468A (zh) * 2015-12-17 2016-05-18 深圳市金立通信设备有限公司 一种信道检测的控制方法及相关设备、系统
CN105611540A (zh) * 2015-12-17 2016-05-25 深圳市金立通信设备有限公司 一种信道检测的控制方法及相关设备
CN105933099A (zh) * 2016-06-06 2016-09-07 深圳市金立通信设备有限公司 一种传输信道探测参考信号srs的方法、终端及基站

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CATT: "Design of UL LBT for LM", 3GPP TSG RAN WG1 MEETING #83, RL-156575, 22 November 2015 (2015-11-22), XP051002993 *

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