WO2015149294A1 - Procédé d'utilisation de spectre de fréquences non autorisé, et station de base et terminal - Google Patents

Procédé d'utilisation de spectre de fréquences non autorisé, et station de base et terminal Download PDF

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Publication number
WO2015149294A1
WO2015149294A1 PCT/CN2014/074592 CN2014074592W WO2015149294A1 WO 2015149294 A1 WO2015149294 A1 WO 2015149294A1 CN 2014074592 W CN2014074592 W CN 2014074592W WO 2015149294 A1 WO2015149294 A1 WO 2015149294A1
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WIPO (PCT)
Prior art keywords
base station
terminal
unlicensed spectrum
spectrum
scheduling command
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PCT/CN2014/074592
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English (en)
Chinese (zh)
Inventor
权威
张戬
李秉肇
杨晓东
胡振兴
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201480000422.7A priority Critical patent/CN105308998B/zh
Priority to PCT/CN2014/074592 priority patent/WO2015149294A1/fr
Publication of WO2015149294A1 publication Critical patent/WO2015149294A1/fr

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Classifications

    • 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

Definitions

  • the embodiments of the present invention relate to the field of communications, and in particular, to a method for using an unlicensed spectrum, a base station, and a terminal. Background technique
  • Spectrum is the basis of communication in wireless communication, but a serious problem in wireless networks today is the shortage of spectrum resources and the waste of spectrum resources. As a scarce resource, spectrum resources cannot be redistributed once they are occupied. In addition, some spectrum resources are allocated but not effectively utilized, which also causes waste of spectrum resources. Therefore, how to improve the use of spectrum resources has become the current concern. A focus.
  • Spectrum resources can be divided into licensed spectrum resources and unlicensed spectrum resources. According to the latest International Spectrum White Paper published by the Federal Communications Commission (FCC), unlicensed spectrum resources are larger than licensed spectrum resources.
  • FCC Federal Communications Commission
  • unlicensed spectrum resources are larger than licensed spectrum resources.
  • LTE Long-Term Evolution
  • WiFi Wireless Fidelity
  • WiFi has drawbacks in terms of mobility, security, Quality of Service (QoS), and simultaneous handling of multi-user scheduling. Therefore, for the base station and the terminal, if the non-entitled spectrum resource can be applied to the LTE technology, the utilization of the spectrum resource can be greatly improved.
  • QoS Quality of Service
  • Embodiments of the present invention provide a method for using an unlicensed spectrum, a base station, and a terminal, which implement data communication using an unlicensed spectrum between a base station and a terminal.
  • an embodiment of the present invention provides a method for using an unlicensed spectrum, including: acquiring, by a base station, a monitoring result for monitoring a usage state of an unlicensed spectrum;
  • the base station Determining, by the base station, a first unlicensed spectrum according to the intercepting result, where the first unlicensed spectrum determines an unlicensed spectrum to be used from the intercepted unlicensed spectrum;
  • the base station performs data transmission with the terminal by using the first unlicensed spectrum.
  • the performing, by the base station, the data transmission by using the first unlicensed spectrum and the terminal includes:
  • the base station sends a first scheduling command to the terminal according to the transmission configuration parameter, where the first scheduling command includes: the base station instructing to use the first unlicensed spectrum to perform data transmission with the terminal;
  • the base station performs data transmission with the terminal on the first unlicensed spectrum according to the first scheduling command.
  • the method further includes:
  • the base station allocates random access resources to the terminal to keep the terminal synchronized with the base station.
  • the first scheduling command is used by the base station to indicate that the first non- The authorized spectrum performs downlink data transmission with the terminal, and the base station performs data transmission with the terminal on the first unlicensed spectrum according to the first scheduling command, including:
  • the base station receives a first response message that the terminal feeds back on the first unlicensed spectrum or the first authorized spectrum.
  • the base station according to the first scheduling command, to the terminal on the first unlicensed spectrum Send downlink data, including:
  • the base station acquires downlink data to be sent from the multiplex encapsulation entity, and stores the downlink data to be sent in a data cache corresponding to the hybrid automatic repeat request HARQ process; Sending, by the base station, the downlink data to be sent to the terminal on the first unlicensed spectrum according to the first scheduling command.
  • the base station receives the first response message if the first response message is an unacknowledged NACK After the first response message fed back by the terminal on the first unlicensed spectrum or the first authorized spectrum, the method further includes:
  • the base station sends a second scheduling command to the terminal, where the second scheduling command includes: the base station indicating to the terminal that the base station will use the first authorized spectrum or the second authorized spectrum to retransmit the use Downlink data of the first unlicensed spectrum transmission failure;
  • the base station receives a second response message that the terminal feeds back on the first authorized spectrum or the second authorized spectrum.
  • the base station is configured to be in the first authorized spectrum or the second authorized spectrum according to the second scheduling command. And sending, by the terminal, the downlink data that fails to be transmitted by using the first unlicensed frequency, the: the base station acquiring, by using the second scheduling command, the first non-authorization from the data cache corresponding to the HARQ process. Downlink data for spectrum transmission failure;
  • the base station receives the first response message if the first response message is an unacknowledged NACK After the first response message fed back by the terminal on the first unlicensed spectrum or the first authorized spectrum, the method further includes:
  • the base station sends a third scheduling command to the terminal, where the third scheduling command includes: the base station notifying the terminal that the base station will use the first authorized spectrum or the second authorized spectrum to send downlink data;
  • the base station sends, by the base station, downlink data to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command;
  • the base station receives a third response message that is sent back by the terminal on the first authorized spectrum or the second authorized spectrum.
  • the base station is configured on the first authorized spectrum or the second authorized spectrum according to the third scheduling command.
  • the downlink data sent to the terminal includes: downlink data that is obtained from the data cache corresponding to the HARQ process and fails to be transmitted by using the first unlicensed frequency.
  • the downlink data in the data cache is set with the number of transmissions.
  • the base station After the base station sends downlink data that fails to use the first unlicensed spectrum transmission to the terminal on the first authorized spectrum or the second authorized spectrum according to the second scheduling command or the third scheduling command, Also includes:
  • the base station accumulates the number of transmissions of downlink data that failed using the first unlicensed spectrum transmission.
  • the first scheduling command is used by the base station to indicate that the first unlicensed spectrum is used
  • the terminal performs uplink data transmission, and the base station performs data transmission with the terminal on the first unlicensed spectrum according to the first scheduling command, including:
  • the base station decodes the received uplink data, and sends a fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received uplink data.
  • the base station is configured to decode the received uplink data. After the fourth response message is sent to the terminal on the first unlicensed spectrum or the first authorized spectrum, the method further includes:
  • the base station sends a fourth scheduling command to the terminal, where the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum retransmission to use the first unlicensed spectrum transmission Failed upstream data;
  • the base station decodes the received uplink data, and sends a fifth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received uplink data.
  • the base station is configured to decode the received uplink data. After the fourth response message is sent to the terminal on the first unlicensed spectrum or the first authorized spectrum, the method further includes:
  • the base station sends a fifth scheduling command to the terminal, where the fifth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum by using the first authorized spectrum or the second authorized spectrum retransmission Transmit failed uplink data;
  • the base station decodes the received uplink data, and sends a sixth response message to the terminal on the first authorized spectrum or the second authorized spectrum according to the decoding condition of the received uplink data.
  • the base station is configured to decode the received uplink data. After the fourth response message is sent to the terminal on the first unlicensed spectrum or the first authorized spectrum, the method further includes:
  • the base station sends a sixth scheduling command to the terminal, where the sixth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized spectrum to send uplink data; And the terminal retransmits the uplink data that fails to be transmitted by using the first unlicensed frequency on the first authorized spectrum or the second authorized spectrum according to the sixth scheduling command;
  • the base station decodes the received uplink data, and sends a seventh response message to the terminal on the first authorized spectrum or the second authorized spectrum according to the decoding condition of the received uplink data.
  • the monitoring result of the base station acquiring the listening state of the unlicensed spectrum includes: the base station listening to the use state of the unlicensed spectrum and generating a monitoring result;
  • the base station instructs the terminal to monitor the usage status of the unlicensed spectrum, and receives the monitoring result reported by the terminal.
  • the transmitting the configuration parameter further includes: competing for using the cell of the first unlicensed spectrum Competitive parameters,
  • the contention parameter includes at least one of the following parameters: whether to monitor the available state of the first unlicensed spectrum before using the cell, the length of time to listen before using the cell, and using the cell. The length of time before the transmission is randomly backed after the first unlicensed spectrum is available, and the usage mode of the used cell is used.
  • the determining, by the base station, the first unlicensed spectrum according to the monitoring result includes:
  • the method further includes:
  • a claim message to a neighboring node, where the claim message includes: the base station claims a usage state of the first unlicensed spectrum to the neighboring node, where the neighboring node is a neighbor of the base station a base station and/or a terminal served by the neighboring base station; or
  • the base station sends a notification message to the terminal to instruct the terminal to send a notification message to the neighboring node according to the notification message, where the notification message includes the announcement message, and the announcement message includes:
  • the neighboring node declares a state of use of the first unlicensed spectrum, and the neighboring node is a terminal served by a neighboring base station of the base station and/or the neighboring base station.
  • the method further includes:
  • the base station and the neighboring node negotiate a usage state of the intercepted unlicensed spectrum when the monitored unlicensed spectrum is used, and the neighboring node serves the neighboring base station of the base station and/or the neighboring base station Terminal.
  • the usage status of the unlicensed spectrum includes at least one of the following parameters: a usage period of the unlicensed spectrum, Length of time and power intensity.
  • the transmitting configuration parameter further includes:
  • the method further includes: the base station acquiring a service quality assessment result according to the first unlicensed spectrum transmission data, and/or the first non-authorization Channel quality assessment results for the spectrum.
  • an embodiment of the present invention provides a method for using an unlicensed spectrum, including: acquiring, by a terminal, a monitoring result for monitoring a usage state of an unlicensed spectrum;
  • the terminal performs data transmission with the base station by using the first unlicensed spectrum.
  • the terminal uses the first unlicensed spectrum to perform data transmission with the base station, including:
  • a transmission configuration parameter sent by the base station where the transmission configuration parameter includes: information determined by the base station to use a cell of the first unlicensed spectrum;
  • the first scheduling command includes: the base station instructing to use the first unlicensed spectrum to perform data transmission with the terminal;
  • the terminal performs data transmission with the base station on the first unlicensed spectrum according to the first scheduling command.
  • the terminal performs, by using the transmission configuration parameter, the data to be transmitted on the first unlicensed spectrum. After configuration, it also includes:
  • the terminal sends a random access request message to the base station, and adjusts a timing advance on the first unlicensed spectrum according to the random access response message sent by the base station.
  • the first scheduling command is used by the base station to indicate that the first non- The authorized spectrum performs downlink data transmission with the terminal, and the terminal performs data transmission with the base station on the first unlicensed spectrum according to the first scheduling command, including:
  • the terminal decodes the received downlink data, and sends a first response message to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received downlink data.
  • the terminal is configured according to the received downlink data.
  • the decoding situation further includes:
  • the second scheduling command includes: the base station indicating to the terminal that the base station is to use the first authorized spectrum or the second authorized spectrum to retransmit the use Determining the downlink data of the first unlicensed spectrum transmission failure;
  • the terminal decodes the received downlink data, and sends a second response message to the base station on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received downlink data.
  • the terminal is configured according to the received downlink data.
  • the decoding situation further includes:
  • a third scheduling command sent by the base station includes: the base station instructing, by the base station, the base station to send downlink data by using the first authorized spectrum or the second authorized spectrum;
  • the terminal decodes the received downlink data, and sends a third response message to the base station on the first authorized spectrum or the second authorized spectrum according to the decoding condition of the received downlink data.
  • the downlink data received by the terminal is used by the base station according to the third scheduling command.
  • a seventh possible implementation manner of the second aspect if the first scheduling command is used by the base station to indicate that the first unlicensed spectrum is used, The terminal performs uplink data transmission, and the terminal performs data transmission with the base station on the first unlicensed spectrum according to the first scheduling command, including:
  • the terminal according to the first scheduling command, to the base station on the first unlicensed spectrum Send upstream data, including:
  • the terminal acquires uplink data to be sent from the multiplex encapsulation entity, and sends the uplink to be sent
  • the data is stored in the data cache corresponding to the hybrid automatic repeat request HARQ process
  • the terminal receives the base station After the first unlicensed spectrum or the fourth response message sent to the terminal on the first authorized spectrum, the method further includes:
  • the terminal receives the fourth scheduling command sent by the base station, where the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum retransmission to use the first unlicensed spectrum transmission failure.
  • the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum retransmission to use the first unlicensed spectrum transmission failure.
  • the terminal receives the base station After the first unlicensed spectrum or the fourth response message sent to the terminal on the first authorized spectrum, the method further includes:
  • the fifth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized spectrum to retransmit the first unauthorized use Uplink data for spectrum transmission failure;
  • the method further includes: The terminal receives the sixth scheduling command sent by the base station, where the sixth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized frequency to send uplink data; And the sixth scheduling command retransmits the uplink data that fails the first unlicensed spectrum transmission to the base station on the first authorized spectrum or the second authorized spectrum;
  • the using the first unlicensed frequency is obtained as follows:
  • the terminal acquires uplink data that fails to be transmitted by using the first unlicensed spectrum from a data buffer corresponding to the HARQ process.
  • the uplink data stored in the data buffer is set with the number of transmissions.
  • the method further includes:
  • the terminal After the terminal retransmits the uplink data that fails the first unlicensed spectrum transmission to the base station, the terminal accumulates the number of transmissions of uplink data that fails to use the first unlicensed spectrum transmission.
  • the monitoring, by the terminal, the monitoring result of monitoring the usage status of the unlicensed spectrum includes:
  • the terminal monitors the usage status of the unlicensed spectrum according to the indication of the base station, and generates a monitoring result
  • the terminal requests the base station to request the base station to monitor the usage status of the unlicensed spectrum, and receives the monitoring result fed back by the base station.
  • the transmitting configuration parameter further includes: competing for a competitive parameter of a cell that uses the first unlicensed spectrum,
  • the competition parameter includes at least one of the following parameters: whether to monitor the available state of the first unlicensed spectrum before using the cell, the length of time before listening to the cell, before using the cell Monitoring the time of random backoff before transmission after the first unlicensed spectrum is available The length of the use, the way in which the cell is used.
  • the determining, by the terminal, the first unlicensed spectrum according to the monitoring result includes:
  • the method further includes:
  • the terminal sends a claim message to the neighboring node, where the claim message includes: the terminal claims the use status of the first unlicensed spectrum to the neighboring node, and the neighboring node is adjacent to the terminal a base station and/or a terminal served by the neighboring base station; or
  • the terminal sends a notification message to the base station to instruct the base station to send a notification message to the neighboring node according to the notification message, where the notification message includes the announcement message, and the announcement message includes:
  • the neighboring node declares a state of use of the first unlicensed spectrum, and the neighboring node is a terminal served by a neighboring base station of the terminal and/or the neighboring base station.
  • the method further includes:
  • the terminal and the neighboring node negotiate a usage state of the intercepted unlicensed spectrum when the monitored unlicensed spectrum is used, and the neighboring node serves the neighboring base station of the terminal and/or the neighboring base station Terminal.
  • the usage status of the unlicensed spectrum includes at least one of the following parameters: a usage period of the unlicensed spectrum, Length of time and power intensity.
  • the transmitting configuration parameter further includes:
  • the method further includes: the terminal acquiring a service quality assessment result according to the first unlicensed spectrum transmission data, and
  • an embodiment of the present invention further provides a base station, including:
  • An acquisition module configured to obtain a monitoring result of monitoring the usage status of the unlicensed spectrum
  • an unlicensed spectrum determining module configured to determine, according to the monitoring result, a first unlicensed spectrum, where the first unlicensed spectrum is from the monitoring
  • the unlicensed spectrum is determined in the unlicensed spectrum
  • the transmission module is configured to perform data transmission with the terminal by using the first unlicensed spectrum.
  • the transmitting module includes:
  • a parameter obtaining submodule configured to acquire a transmission configuration parameter of the first unlicensed spectrum, where the transmission configuration parameter includes: information used by a cell that uses the first unlicensed spectrum;
  • a parameter sending submodule configured to send the transmission configuration parameter to the terminal, so that the terminal configures data transmission on the first unlicensed spectrum by itself;
  • a first command sending submodule configured to send a first scheduling command to the terminal according to the transmission configuration parameter, where the first scheduling command includes: the base station instructing to use the first unlicensed spectrum to perform with the terminal data transmission;
  • a first transmission submodule configured to perform data transmission with the terminal on the first unlicensed spectrum according to the first scheduling command.
  • the transmitting module further includes:
  • a random access sub-module configured to: after the parameter sending sub-module sends the transmission configuration parameter to the terminal, allocate a random access resource to the terminal, so that the terminal maintains synchronization with the base station.
  • the first scheduling command is used by the base station to indicate that the first non- The authorized spectrum and the terminal perform downlink data transmission, where the first transmission submodule includes:
  • a first data sending unit configured to send downlink data to the terminal on the first unlicensed spectrum according to the first scheduling command
  • the first response receiving unit is configured to receive a first response message that is sent by the terminal on the first unlicensed spectrum or the first authorized spectrum.
  • the first data sending unit is specifically configured to obtain downlink data to be sent from the multiplexing encapsulating entity, And the downlink data to be sent is stored in a data buffer corresponding to the hybrid automatic repeat request HARQ process; and the to-be-sent is sent to the terminal on the first unlicensed spectrum according to the first scheduling command. Downstream data.
  • the transmitting module is further Includes:
  • a second command sending submodule configured to send the second scheduling to the terminal after the first response receiving unit receives the first response message that is sent back by the terminal on the first unlicensed spectrum or the first authorized spectrum
  • the second scheduling command includes: the base station notifying the terminal that the base station will use the first authorized spectrum or the second authorized spectrum to retransmit downlink data that fails to be transmitted by using the first unlicensed spectrum;
  • a second transmission submodule configured to send, according to the second scheduling command, downlink data that fails to be transmitted by using the first unlicensed frequency on the first authorized spectrum or the second authorized spectrum;
  • the response receiving submodule is configured to receive a second response message that is sent back by the terminal on the first authorized spectrum or the second authorized spectrum.
  • the second transmission submodule is specifically configured to use the second scheduling command from the HARQ process And obtaining, in the corresponding data cache, downlink data that fails to be transmitted by using the first unlicensed spectrum; and transmitting, by using the first authorized spectrum or the second authorized spectrum, a downlink that fails to use the first unlicensed spectrum transmission data.
  • the transmitting module is further Includes:
  • a third command sending submodule configured to send the third scheduling to the terminal after the first response receiving unit receives the first response message that is sent back by the terminal on the first unlicensed spectrum or the first authorized spectrum
  • the third scheduling command includes: the base station indicating to the terminal that the base station is to use the first authorized spectrum or the second authorized spectrum to send downlink data; a third transmission submodule, configured to send downlink data to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command;
  • a third response receiving submodule configured to receive a third response message that is sent back by the terminal on the first authorized spectrum or the second authorized spectrum.
  • the base station is configured on the first authorized spectrum or the second authorized spectrum
  • the downlink data sent to the terminal includes: downlink data that is obtained from the data cache corresponding to the HARQ process and fails to be transmitted by using the first unlicensed frequency.
  • the downlink data in the data buffer is set with the number of transmissions, and the base station further includes:
  • a counting module configured to send, by the second transmission sub-module, the usage to the terminal on the first authorized spectrum or the second authorized spectrum according to the second scheduling command according to the second scheduling command or the third transmission sub-module After the downlink data of the first unlicensed spectrum transmission fails, the number of transmissions of the downlink data that fails using the first unlicensed spectrum transmission is accumulated.
  • the first scheduling command is used by the base station to indicate that the first unlicensed spectrum is used
  • the terminal performs uplink data transmission
  • the first transmission submodule includes:
  • a first data receiving unit configured to receive uplink data that is sent by the terminal on the first unlicensed spectrum according to the first scheduling command
  • a fourth response sending unit configured to decode the received uplink data, and send a fourth response to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data Message.
  • the transmitting module further includes:
  • a fourth command sending submodule configured to: after the fourth response sending unit sends the fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data Sending a fourth scheduling command to the terminal, where the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum retransmission to use the first unlicensed spectrum Transmit failed uplink data;
  • a fourth transmission submodule configured to receive, by the terminal, retransmission, on the first unlicensed spectrum, uplink data that fails to be transmitted by using the first unlicensed frequency according to the fourth scheduling command;
  • a fifth response sending submodule configured to decode the received uplink data, and send the fifth to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data.
  • Response message configured to decode the received uplink data, and send the fifth to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data.
  • the transmitting module further includes:
  • a fifth command sending submodule configured to: after the fourth response sending unit sends the fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data Sending a fifth scheduling command to the terminal, where the fifth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized spectrum retransmission to use the first unlicensed spectrum transmission failure Uplink data;
  • a fifth transmission submodule configured to receive, by the terminal, retransmission, on the first authorized spectrum or the second authorized spectrum, uplink data that fails to be transmitted by using the first unlicensed spectrum according to the fifth scheduling command;
  • a sixth response sending submodule configured to decode the received uplink data, and send a sixth response to the terminal on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received uplink data Message.
  • the transmitting module further includes:
  • a sixth command sending submodule configured to: after the fourth response sending unit sends the fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data Sending a sixth scheduling command to the terminal, where the sixth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized frequency to send uplink data; and the sixth transmission submodule, Receiving, by the terminal, the uplink data that fails to be transmitted by using the first unlicensed spectrum on the first authorized spectrum or the second authorized spectrum according to the sixth scheduling command;
  • a seventh response sending submodule configured to decode the received uplink data, and receive the received data according to The decoding of the received uplink data sends a seventh response message to the terminal on the first authorized spectrum or the second authorized spectrum.
  • the acquiring module is specifically configured to monitor a usage state of the unlicensed spectrum and generate a monitoring result; or, instruct the terminal to The usage status of the unlicensed spectrum is monitored, and the monitoring result reported by the terminal is received.
  • the transmitting the configuration parameter further includes: competing to use the cell of the first unlicensed spectrum Competitive parameters,
  • the contention parameter includes at least one of the following parameters: whether to monitor the available state of the first unlicensed spectrum before using the cell, the length of time to listen before using the cell, and using the cell. The length of time before the transmission is randomly backed after the first unlicensed spectrum is available, and the usage mode of the used cell is used.
  • the unlicensed spectrum determining module is configured to select, according to the monitoring result, all the unlicensed spectrums that are monitored.
  • the idle unlicensed spectrum determines that the idle unlicensed spectrum is the first unlicensed spectrum.
  • the base station further includes:
  • a message sending module configured to send, by the unlicensed spectrum determining module, the first non-authorized frequency message according to the intercepting result, to send a claim message to the neighboring node
  • the claim message includes: the base station to the neighboring node Declaring a state of use of the first unlicensed spectrum, the neighboring node is a terminal served by a neighboring base station of the base station and/or the neighboring base station; or sending a notification message to the terminal to indicate The terminal sends a claim message to the neighboring node according to the notification message, where the notification message includes the claim message, and the claim message includes: the base station claims the use of the first unlicensed spectrum to the neighboring node a state, the neighboring node is a terminal served by a neighboring base station of the base station and/or the neighboring base station.
  • a negotiation module configured to acquire, after the module obtains the monitoring result of monitoring the usage state of the unlicensed spectrum, and the neighboring node negotiates the usage state of the unlicensed spectrum that is monitored when the monitored unlicensed spectrum is used, the phase
  • the neighboring node is a terminal served by a neighboring base station of the base station and/or the neighboring base station.
  • the usage status of the unlicensed spectrum includes at least one of the following parameters: a usage period of the unlicensed spectrum, Length of time and power intensity.
  • the transmitting configuration parameter further includes:
  • the base station After the base station performs data transmission with the terminal by using the first unlicensed spectrum, the base station is further configured to obtain a quality of service evaluation result according to the first unlicensed spectrum transmission data, and/or a channel of the first unlicensed spectrum. Quality assessment results.
  • the first command sending submodule specifically for the Transmitting the first scheduling command on an unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the second command sending submodule is specifically configured to transmit the second scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the third command sending submodule is specifically configured to transmit the third scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the fourth command sending submodule is specifically configured to transmit the fourth scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the fifth command sending submodule is specifically configured to transmit the fifth scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the sixth command sending submodule is specifically configured to transmit the sixth scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum.
  • a terminal including:
  • An acquisition module configured to obtain a monitoring result of monitoring the usage status of the unlicensed spectrum
  • an unlicensed spectrum determining module configured to determine, according to the monitoring result, a first unlicensed spectrum, where the first unlicensed spectrum is from the monitoring
  • the unlicensed spectrum is determined in the unlicensed spectrum
  • the transmission module is configured to perform data transmission with the base station by using the first unlicensed spectrum.
  • the transmitting module includes:
  • a parameter receiving submodule configured to receive a transmission configuration parameter sent by the base station, where the transmission configuration parameter includes: information that is used by the base station to use a cell that uses the first unlicensed spectrum; Configuring to transmit data on the first unlicensed spectrum according to the transmission configuration parameter;
  • a first command receiving submodule configured to receive a first scheduling command sent by the base station, where the first scheduling command includes: the base station instructing to use the first unlicensed spectrum to perform data transmission with the terminal;
  • a first transmission submodule configured to perform data transmission with the base station on the first unlicensed spectrum according to the first scheduling command.
  • a random access sub-module configured to send, by the parameter configuration sub-module, the random access request message to the base station after configuring the data transmission on the first unlicensed spectrum according to the transmission configuration parameter, and according to the The random access response message sent by the base station adjusts a timing advance on the first unlicensed spectrum.
  • the first scheduling command is used by the base station to indicate that the first non- The authorized spectrum and the terminal perform downlink data transmission, where the first transmission submodule includes:
  • a first data receiving unit configured to receive, by the base station, the first in accordance with the first scheduling command Downlink data sent on the unlicensed spectrum
  • a first response sending unit configured to decode the received downlink data, and send a first response to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received downlink data Message.
  • the transmitting module further includes: a second command a receiving submodule, configured to: after the first response sending unit sends the first response message to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received downlink data, Determining, by the base station, a second scheduling command, where the second scheduling command includes: the base station indicating to the terminal that the base station is to use the first authorized spectrum or the second authorized spectrum to retransmit the first unauthorized use Downlink data in which the frequency transmission fails;
  • a second transmission submodule configured to receive, by the base station, the downlink that is sent to the terminal by using the first unlicensed spectrum transmission failure on the first authorized spectrum or the second authorized spectrum according to the second scheduling command Data
  • a second response sending submodule configured to decode the received downlink data, and send a second response to the base station on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received downlink data Message.
  • the transmitting module further includes: a third command a receiving submodule, configured to: after the first response sending unit sends the first response message to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received downlink data, Determining, by the base station, a third scheduling command, where the third scheduling command includes: the base station indicating to the terminal that the base station is to use the first authorized spectrum or the second authorized spectrum to send downlink data;
  • a third transmission submodule configured to receive, by the base station, downlink data to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command;
  • the downlink data received by the second transmission submodule is that the base station is configured according to the third scheduling The transmitted downlink data that failed to be transmitted using the first unlicensed spectrum.
  • the terminal performs uplink data transmission, and the first transmission submodule includes:
  • a first data sending unit configured to send uplink data to the base station on the first unlicensed spectrum according to the first scheduling command
  • a fourth response receiving unit configured to receive a fourth response message sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum.
  • the first data sending unit is specifically configured to obtain uplink data to be sent from the multiplexing encapsulating entity, And the uplink data to be sent is stored in a data buffer corresponding to the hybrid automatic repeat request HARQ process; and the to-be-sent is sent to the base station on the first unlicensed spectrum according to the first scheduling command. Upstream data.
  • the transmitting module further includes: a fourth command receiving submodule, configured to receive, by the fourth response receiving unit, a fourth response message that is sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum, and then receive the base station The fourth scheduling command is sent, where the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum to retransmit the uplink data that fails to be transmitted by using the first unlicensed spectrum;
  • a fourth transmission submodule configured to retransmit the uplink data that fails the first unlicensed spectrum transmission to the base station according to the fourth scheduling command on the first unlicensed spectrum
  • a fifth response receiving submodule configured to receive, by the base station, a fifth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum.
  • the transmitting module further includes: a fifth command receiving submodule, configured to receive, by the fourth response receiving unit, the base station in the And receiving, by the unlicensed spectrum or the fourth response message sent by the base station, the fifth scheduling command sent by the base station, where the fifth scheduling command includes: the base station instructing the terminal to use the terminal Determining, by the first authorized spectrum or the second authorized spectrum, the uplink data that fails to be transmitted by using the first unlicensed spectrum;
  • a fifth transmission submodule configured to retransmit the uplink data of the first unlicensed spectrum transmission failure to the base station according to the fifth scheduling command on the first authorized spectrum or the second authorized spectrum;
  • the response sending submodule is configured to receive a sixth response message sent by the base station to the terminal on the first authorized spectrum or the second authorized spectrum.
  • the transmitting module further includes :
  • a sixth command receiving submodule configured to receive, by the fourth response receiving unit, a fourth response message that is sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum, and then receive the base station
  • the sixth scheduling command is sent, where the sixth scheduling command includes: the base station instructing the terminal to send uplink data by using the first authorized spectrum or the second authorized spectrum;
  • a sixth transmission submodule configured to retransmit the uplink data of the first unlicensed spectrum transmission failure to the base station according to the sixth scheduling command on the first authorized spectrum or the second authorized spectrum;
  • the response receiving submodule is configured to receive a seventh response message sent by the base station to the terminal on the first authorized spectrum or the second authorized spectrum.
  • the fourth transmission submodule, the fifth transmission The submodule and the sixth transmission submodule use the uplink data of the first unlicensed spectrum transmission failure to be obtained by:
  • the uplink data stored in the data cache is set with the number of transmissions, and the terminal further includes:
  • a counting module configured to be a fourth transmission submodule, a fifth transmission submodule, and a sixth transmission submodule After the base station retransmits the uplink data that fails to be transmitted by using the first unlicensed frequency, the number of transmissions of the uplink data that fails to be transmitted by using the first unlicensed spectrum is accumulated.
  • the acquiring module is configured to: monitor, according to the indication of the base station, the usage state of the unlicensed spectrum and generate a monitoring result. Or, requesting, by the base station, requesting the base station to monitor the usage status of the unlicensed spectrum, and receiving the monitoring result fed back by the base station.
  • the transmitting configuration parameter further includes: competing for a competitive parameter of a cell that uses the first unlicensed spectrum,
  • the competition parameter includes at least one of the following parameters: whether to monitor the available state of the first unlicensed spectrum before using the cell, the length of time before listening to the cell, before using the cell The length of time before the transmission is randomly backed after the first unlicensed spectrum is available, and the usage manner of the used cell is used.
  • the unlicensed spectrum determining module is configured to select, according to the monitoring result, idle from all unlicensed spectrums that are monitored.
  • the unlicensed spectrum determines that the idle unlicensed spectrum is the first unlicensed spectrum.
  • the terminal further includes: a message sending module, where the unlicensed spectrum determining module determines, according to the monitoring result, Sending a claim message to the neighboring node, the claim message includes: the terminal declaring the use status of the first unlicensed spectrum to the neighboring node, where the neighboring node is a neighboring base station of the terminal and/or a terminal served by the neighboring base station; or, sending a notification message to the base station, to instruct the base station to send a announce message to the neighboring node according to the notification message, the notification
  • the message includes the claim message, the claim message includes: the terminal declaring a usage status of the first unlicensed spectrum to the neighboring node, where the neighboring node is a neighboring base station of the terminal and/or The terminal served by the neighboring base station.
  • the terminal further includes:
  • the negotiation module is configured to acquire, after the module acquires the monitoring result of monitoring the usage state of the unlicensed spectrum, and negotiate with the neighboring node to use the unlicensed spectrum of the intercepted unlicensed spectrum
  • the usage state of the spectrum, the neighboring node is a terminal served by a neighboring base station of the terminal and/or the neighboring base station.
  • the usage status of the unlicensed spectrum includes at least one of the following parameters: a usage period of the unlicensed spectrum, Length of time and power intensity.
  • the transmitting configuration parameter further includes:
  • the terminal After the terminal uses the first unlicensed spectrum to perform data transmission with the base station, the terminal is further configured to obtain a quality of service evaluation result according to the first unlicensed spectrum transmission data, and/or a channel of the first unlicensed spectrum. Quality assessment results.
  • the embodiments of the present invention have the following advantages:
  • the monitoring result of monitoring the usage state of the unlicensed spectrum may be obtained, and then the first unlicensed spectrum is determined according to the monitoring result, and the data between the base station and the terminal may be implemented by using the first unlicensed spectrum. transmission. Since the first unlicensed spectrum is an unlicensed spectrum determined from the intercepted unlicensed spectrum based on the interception result, data communication between the base station and the terminal is implemented using the first unlicensed spectrum that is determined to be usable.
  • FIG. 1 is a schematic block diagram showing a method for using an unlicensed spectrum according to an embodiment of the present invention
  • FIG. 2 is a schematic block diagram showing another method for using an unlicensed spectrum according to an embodiment of the present invention.
  • FIG. 3-a is a schematic diagram of a function implementation in a base station according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of another function implementation in a base station according to an embodiment of the present invention.
  • FIG. 3-c is a schematic diagram of another function implementation in a base station according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a transmission module according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a first transmission sub-module according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of another base station according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 5-a is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 5-b is a schematic structural diagram of another transmission module according to an embodiment of the present invention
  • FIG. 5-c is a schematic structural diagram of another first transmission submodule according to an embodiment of the present invention
  • a schematic structural diagram of another terminal provided by an embodiment of the present invention
  • FIG. 5-e is a schematic structural diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 5-f is a schematic structural diagram of another terminal according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another terminal according to an embodiment of the present invention. detailed description
  • Embodiments of the present invention provide a method for using an unlicensed spectrum, a base station, and a terminal, which implement data communication using an unlicensed spectrum between a base station and a terminal.
  • An embodiment of the method for using the unlicensed spectrum of the present invention is applicable to a base station, where the method may include: acquiring, by the base station, a monitoring result for monitoring a usage state of the unlicensed spectrum; and determining, by the base station, the first unlicensed spectrum according to the monitoring result, The first unlicensed spectrum determines an unlicensed spectrum to be used from the unlicensed spectrum that is monitored; and the base station uses the first unlicensed spectrum to perform data transmission with the terminal.
  • a method for using an unlicensed spectrum may include the following steps:
  • the base station acquires a monitoring result of monitoring the usage state of the unlicensed spectrum.
  • the usage status of the unlicensed spectrum is first monitored, and the base station may obtain the monitoring result of monitoring the usage status of the unlicensed spectrum, where the monitoring result may include the use of an unlicensed spectrum that is monitored.
  • the status may also include the usage status of more than two unlicensed spectrums, and may also include the usage status of all unlicensed spectrums that are monitored.
  • the use status of the unlicensed spectrum refers to the state in which the unlicensed frequency is used by neighboring nodes.
  • the usage status of the unlicensed spectrum may include the use period, time length, power strength, etc. of the unlicensed spectrum.
  • the neighboring node refers to the neighboring base station of the listener and/or the terminal served by the neighboring base station.
  • the neighboring node may further include a WiFi access point (AP).
  • AP WiFi access point
  • the step 101 acquires the monitoring result of the monitoring of the usage status of the unlicensed spectrum
  • the method may be as follows: the base station monitors the usage status of the unlicensed spectrum and generates a monitoring result; or, the base station The terminal is instructed to monitor the usage status of the unlicensed spectrum, and receives the monitoring result reported by the terminal. That is, the listener may be a base station or a terminal served by the base station. If the base station itself monitors the usage status of the unlicensed spectrum, the base station may generate the monitoring result by itself. If the base station instructs the terminal to monitor, the terminal may according to the indication of the base station.
  • the base station can obtain the monitoring result through the reporting of the terminal.
  • the monitoring result includes a situation in which the listener monitors the usage status of one or more unlicensed spectrums. For example, after the unlicensed spectrum A is monitored, the usage period of the unlicensed spectrum A can be known, and each time the used spectrum is used. Length of time and power value, etc.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the specific method for the terminal to report the result of monitoring the usage status of the unlicensed spectrum may be implemented by using an RRC message, such as a measurement report, or by using a MAC layer message or a physical layer message.
  • RRC message such as a measurement report
  • MAC layer message or a physical layer message.
  • the base station determines the first unlicensed spectrum according to the monitoring result.
  • the first unlicensed spectrum determines the unlicensed spectrum to be used from the unlicensed spectrum that is monitored.
  • the base station may determine, according to the monitoring result, which unlicensed spectrum is to be used from all the unlicensed spectrums that are monitored, in the embodiment of the present invention, the determined unlicensed spectrum is recorded as The first unlicensed spectrum, the first unlicensed spectrum is an unlicensed spectrum that is determined to be used from the unlicensed spectrum that is being monitored.
  • the base station determines that the first unlicensed spectrum used may be an unlicensed spectrum, or may be two or more unlicensed spectrums, which is not limited herein.
  • the base station determines the first unlicensed spectrum according to the monitoring result, and specifically includes the following steps: the base station determines, according to the monitoring result, the idle unlicensed spectrum from all the unlicensed spectrums that are monitored, determining that the idle is determined.
  • the unlicensed spectrum is the first unlicensed spectrum.
  • the idle unlicensed spectrum may refer to an unlicensed spectrum that has not been used for a certain period of time, and may also refer to an unlicensed spectrum that has not been used by neighboring nodes, and may also refer to a signal strength at a certain period of time. Unlicensed spectrum within or always below a certain threshold.
  • the base station may further include the following steps:
  • the base station sends an announcement message to the neighboring node, where the message includes: the base station announces the usage status of the first unlicensed spectrum to the neighboring node, and the neighboring node is the terminal served by the neighboring base station of the base station and/or the neighboring base station;
  • the base station sends a notification message to the terminal to instruct the terminal to send a announcement message to the neighboring node according to the notification message, where the notification message includes a announcement message, and the announcement message includes: the base station declares the first non-grant to the neighboring node.
  • the state of use of the weight spectrum, the neighboring nodes are terminals served by neighboring base stations of the base station and/or neighboring base stations.
  • the base station may declare the usage status of the first unlicensed spectrum determined by the base station, for example, the usage period of the first unlicensed spectrum that the base station claims to use, Specifically, the base station may directly send a announcement message to the neighboring node, and the base station may also send a notification message to the terminal, where the terminal declares the usage status of the first unlicensed spectrum by the base station.
  • the neighboring nodes of the base station refer to neighboring base stations of the base station, and/or terminals served by neighboring base stations. By declaring its own state of use of the first unlicensed spectrum, the base station can avoid interference or collisions that are easily caused when the unlicensed spectrum is used.
  • the base station announces to the neighboring node that the first unlicensed spectrum is used by the neighboring node, and the neighboring node (for example, the neighboring base station or the cell) may not participate in the competition when the base station uses the first unlicensed spectrum resource after receiving the announcement message.
  • the competition is coordinated and the neighboring nodes avoid the first unlicensed spectrum, so that interference or collisions that may exist in the unlicensed spectrum can be avoided.
  • the base station may further include the following steps:
  • the base station and the neighboring node negotiate a usage state of the unlicensed spectrum that is monitored when the intercepted unlicensed spectrum is used, wherein the neighboring node is a neighboring base station of the base station and/or a terminal served by the neighboring base station.
  • the base station may also negotiate with the neighboring node (Negotiate) how to use the at least one unlicensed spectrum that is monitored, for example, the base station and the neighboring node negotiate to use the unlicensed spectrum.
  • the base station negotiates the use status of the unlicensed spectrum with the neighboring node. Then, for the base station to determine the first unlicensed spectrum used, the neighboring node can avoid the first unlicensed spectrum, thereby avoiding interference or collision that may exist in the unlicensed spectrum.
  • the base station performs data transmission with the terminal by using the foregoing first unlicensed spectrum.
  • the base station may use the determined first unlicensed spectrum to perform data transmission with the terminal, so that the base station can successfully use the unlicensed spectrum, and the base station passes the pair.
  • the use of unlicensed spectrum increases the use of the entire spectrum of resources.
  • the determined use of the first unlicensed spectrum by the base station may be used for uplink data transmission with the terminal, and may also be used for downlink data transmission with the terminal. Since the base station first monitors through unlicensed spectrum Listening, and then determining the first unlicensed spectrum that can be used, the reliability and delay of the data transmission can be ensured when the first unlicensed spectrum is used for data transmission with the terminal.
  • the base station can monitor the unlicensed spectrum and determine the first unlicensed spectrum that can be used. When the first unlicensed spectrum is used for data transmission with the terminal, the success rate of data transmission can be effectively guaranteed.
  • the base station performs data transmission with the terminal by using the first unlicensed spectrum, and specifically includes the following steps:
  • the base station acquires a transmission configuration parameter of the first unlicensed spectrum, where the transmission configuration parameter includes: information for a cell that uses the first unlicensed spectrum;
  • the base station sends the transmission configuration parameter to the terminal, so that the terminal configures the data transmission on the first unlicensed spectrum.
  • the base station sends a first scheduling command to the terminal according to the transmission configuration parameter, where the first scheduling command includes: the base station instructs to use the first unlicensed spectrum to perform data transmission with the terminal;
  • the base station performs data transmission with the terminal on the first unlicensed spectrum according to the first scheduling command.
  • the base station first configures a cell that uses the first unlicensed spectrum to obtain a transmission configuration parameter of the first unlicensed spectrum, where the transmission configuration parameter includes information for a cell that uses the first unlicensed spectrum, for example,
  • the cell identifier of the first unlicensed spectrum, or the cell index number, or the information of the cell, such as the cell frequency point may further include: a cell bandwidth of the first unlicensed frequency that can be used, such as 5 MHz, 10 MHz, or 25 physical resource blocks (PRBs), 50 PRBs, etc., may further include: a radio bearer for transmitting data of a cell of the first unlicensed spectrum that may be used, and the specific parameter may be an identifier of the radio bearer, or a radio bearer Corresponding logical channel identifier, or the radio bearer bearer identifier corresponding to the radio bearer, or the service type corresponding to the radio bear
  • the transmitting the configuration parameter further includes: competing for a competition parameter of the cell using the first unlicensed spectrum, wherein the contention parameter includes at least one of the following parameters: Whether the available state of the first unlicensed spectrum needs to be monitored before the cell, the length of time before the use of the cell, and the length of the random backoff before transmission after the first unlicensed spectrum is monitored before using the cell, Use the way the cell is used.
  • the base station can monitor the available state of the first unlicensed spectrum before using the cell, and the base station can also set the length of the listening period before using the d, the area, for example, the interframe space (IFS), and the base station can also monitor.
  • the length of the random backoff before the transmission is set, that is, the UE randomly selects a random backoff time window within the length of the random backoff, and the base station can also set the power threshold.
  • the power is lower than the number, the cell resource of the unlicensed spectrum can be used, and the base station can also set a specific manner of using the unlicensed spectrum cell, such as a periodic, one-time specific parameter, and the length of each use.
  • RTS request to send
  • CTS clear to send
  • the conditions for sending RTS/CTS such as the size threshold of the amount of data packets to be sent, are required.
  • transmitting the configuration parameters further includes: using a quality of service evaluation parameter of the first unlicensed spectrum transmission data, and/or a channel quality evaluation parameter of the first unlicensed spectrum. That is, the base station can set the quality of service evaluation parameters and/or channel quality evaluation parameters. After the base station performs data transmission with the terminal using the first unlicensed spectrum, the base station obtains a quality of service evaluation result using the first unlicensed spectrum transmission data, and/or a channel quality evaluation result of the first unlicensed spectrum. The base station can obtain the channel condition when the first unlicensed spectrum is used by using the service quality assessment result and the channel quality assessment result, and implement the evaluation of the quality of service of the first unlicensed spectrum and the channel quality evaluation.
  • the base station may set a QoS parameter for transmitting data on the cell using the first unlicensed spectrum, such as a delay, a packet loss rate, and the base station may also set a channel quality estimation parameter for transmitting data on the cell using the first unlicensed spectrum. , such as power, interference, signal to noise ratio, etc.
  • step A2 the base station sends the transmission configuration parameter to the terminal, and the terminal can configure the data transmission on the first unlicensed spectrum, and the terminal configures according to the configuration content of the transmission configuration parameter, thereby establishing the utilization between the base station and the terminal.
  • the step A2 may further include the following steps: The base station allocates a random access resource to the terminal, so that the terminal maintains synchronization with the base station. After the base station allocates the random access resource to the terminal, the terminal may initiate a random access to the base station, and the base station adjusts the timing advance of the terminal on the first unlicensed spectrum according to the random access request, and passes the The machine access response message is sent to the terminal, thereby maintaining synchronization between the terminal and the base station. For example, the base station may set some parameters related to performing random access on the cell using the first unlicensed spectrum, such as a random access resource, a random access code, a starting position, a size, and the like of the random access response message receiving window.
  • some parameters related to performing random access on the cell using the first unlicensed spectrum such as a random access resource, a random access code, a starting position, a size, and the like of the random access response message receiving window.
  • the transmitting configuration parameter further includes: a cell identifier for scheduling cell transmission data using the first unlicensed spectrum, for example, scheduling a cell using the first unlicensed spectrum as a cell using the licensed spectrum Identification, or cell index number, or cell frequency.
  • the transmitting the configuration parameter further includes: after transmitting the data on the cell using the first unlicensed spectrum, continuing to transmit related parameters of the data on the cell using the licensed spectrum, such as which one can be used The cell on the licensed spectrum is transmitted, and how long it waits to continue transmission on the cell using the licensed spectrum.
  • the base station sends a first scheduling command to the terminal according to the transmission configuration parameter, where the first scheduling command is used by the base station to indicate that the first unlicensed spectrum is used to perform data transmission with the terminal.
  • the first scheduling command may be used by the base station to indicate the usage.
  • the unscheduled spectrum and the terminal perform downlink data transmission, and the first scheduling command may also indicate to the base station that the first unlicensed spectrum is used to perform uplink data transmission with the terminal.
  • the base station may continue to send other scheduling commands to the terminal, which will be described in detail in the following embodiments.
  • One or more of the code mode, the new data transmission indication, and the redundancy version, and the base station and the terminal can perform data transmission according to the scheduling command.
  • the step A4 base station is in the first unlicensed spectrum according to the first scheduling command.
  • Data transmission with the terminal including:
  • the base station sends downlink data to the terminal on the first unlicensed spectrum according to the first scheduling command.
  • the base station receives the first response message that the terminal feeds back on the first unlicensed spectrum or the first authorized spectrum.
  • the terminal may obtain the indication of the base station by using the first scheduling command, and the base station may send the downlink data to the terminal on the first unlicensed spectrum according to the first scheduling command, where the terminal may Receiving downlink data sent by the base station on the first unlicensed spectrum, The data transmission between the base station and the terminal by using the first unlicensed spectrum may be implemented.
  • the terminal When the terminal receives the downlink data sent by the base station on the first unlicensed spectrum, the terminal may decode the received downlink data, and the terminal may The decoding of the received downlink data sends a first response message to the base station on the first unlicensed spectrum or the first authorized spectrum, and the base station may receive the first feedback of the terminal on the first unlicensed spectrum or the first authorized spectrum. Response message.
  • the terminal may provide feedback on the first unlicensed spectrum, and the terminal may not use the first unlicensed spectrum, but feed back to the base station on the first authorized spectrum.
  • the first authorized spectrum is a network channel for communication between the base station and the terminal.
  • the terminal may use the first unlicensed spectrum to feed back when feeding back the first response message to the base station, and may also use the first
  • the spectrum is authorized to be fed back because the data retransmission is usually convenient on the licensed spectrum.
  • the unlicensed spectrum due to the competition of resources, it may not be possible to secure resources when retransmitting.
  • the base station sends the downlink data to the terminal on the first unlicensed spectrum according to the first scheduling command, which may include:
  • the base station obtains downlink data to be sent from the multiplex encapsulation entity, and stores the downlink data to be sent in a data cache corresponding to a Hybrid Automatic Repeat ReQuest (HQQ) process;
  • HQQ Hybrid Automatic Repeat ReQuest
  • the base station sends the downlink data to be sent to the terminal on the first unlicensed spectrum according to the first scheduling command.
  • the base station includes a multiplex encapsulation entity and a data buffer, and the data cache corresponds to the HARQ process, where the data cache is used to read data during HARQ, and the base station can obtain downlink data to be sent from the multiplex encapsulation entity. And storing in the data buffer, and then transmitting the downlink data to the terminal on the first unlicensed spectrum.
  • the step A42 receives the first response message fed back by the terminal on the first unlicensed spectrum or the first authorized spectrum, and further includes the following step: A.
  • the base station sends a second scheduling command to the terminal, where the second scheduling command includes: the base station notifying the terminal that the base station will use the first authorized spectrum or the second authorized spectrum to retransmit the downlink data that fails to be transmitted by using the first unlicensed spectrum;
  • the base station sends downlink data that fails to use the first unlicensed spectrum transmission to the terminal on the first authorized spectrum or the second authorized spectrum according to the second scheduling command.
  • the base station receives a second response message that is sent by the terminal on the first authorized spectrum or the second authorized spectrum.
  • the base station can learn that the downlink data transmission fails, because the downlink data that fails to use the first unlicensed spectrum transmission is still in the data cache. If the data is saved, the base station performs step A43, generates a second scheduling command, and sends the second scheduling command to the terminal, and the base station indicates to the terminal that the base station will retransmit the downlink data that fails to use the first unlicensed spectrum transmission, because the base station fails to use the first unlicensed spectrum transmission. Therefore, the base station can use the licensed spectrum when retransmitting the downlink data. For example, the base station can use the first authorized spectrum used by the terminal to feed back the first response message, and the base station may not use the first authorized spectrum, but the second scheduling command. The middle indication will use the second authorized spectrum.
  • Step A44 The base station sends the downlink data that fails to use the first unlicensed spectrum transmission to the terminal according to the second scheduling command, and may include the following steps: A44a, the base station receives the HARQ according to the second scheduling command. Obtaining downlink data that fails to be transmitted by using the first unlicensed spectrum in the data cache corresponding to the process;
  • A44b The base station sends, to the terminal, the downlink data that fails to be transmitted by using the first unlicensed spectrum on the first licensed spectrum or the second authorized spectrum.
  • the downlink data transmitted on the first unlicensed spectrum is still stored in the data cache corresponding to the HARQ process.
  • the base station may extract from the data cache to use the first unlicensed spectrum transmission failure.
  • the downlink data is retransmitted to the terminal on the first authorized spectrum or the second authorized spectrum according to the second scheduling command.
  • the base station sends a second scheduling command to the terminal, and the base station explicitly indicates to the terminal that the downlink data that the retransmission transmission fails, and then the base station is in the first authorized spectrum or The second authorized spectrum retransmission fails the transmission of the downlink data.
  • the base station may also send the third scheduling command to the terminal, but does not indicate that the retransmission is to be performed.
  • the step A42 includes, after receiving the first response message fed back by the terminal on the first unlicensed spectrum or the first authorized spectrum, the following steps:
  • A46 The base station sends a third scheduling command to the terminal, where the third scheduling command includes: the base station notifying the terminal that the base station will send the downlink data by using the first authorized spectrum or the second authorized frequency;
  • the base station sends downlink data to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command.
  • the base station receives a third response message that is sent by the terminal on the first authorized spectrum or the second authorized spectrum.
  • the base station may generate a third scheduling command and send it to the terminal, but does not indicate the downlink data that will be retransmitted, but indicates that the terminal will use the first authorized spectrum or the second authorized spectrum to transmit downlink data. That is, the base station only indicates to the terminal which licensed spectrum to be used (ie, the first authorized spectrum or the second authorized spectrum carried in the third scheduling command), and does not indicate to the terminal downlink data that the retransmission transmission fails.
  • the base station sends the third scheduling command to the terminal, the base station sends downlink data to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command, and the terminal receives the base station in the first authorized spectrum or the second.
  • the terminal may decode the received downlink data, and the terminal may send a third response message to the base station according to the decoding status of the received downlink data, and the base station may receive the terminal in the first authorization.
  • a third response message fed back on the spectrum or the second licensed spectrum.
  • the downlink data sent by the base station in step A47 may be new downlink data, or may be downlink data that fails to be transmitted by using the first unlicensed spectrum, that is, the base station is in the first authorized spectrum according to the third scheduling command.
  • the downlink data sent to the terminal on the second authorized spectrum includes: downlink data that is obtained from the data cache corresponding to the HARQ process and that fails to be transmitted by using the first unlicensed spectrum.
  • the base station when the base station stores downlink data in the data buffer, the base station may also perform downlink data stored in the data buffer.
  • the number of transmissions is set, that is, the number of transmissions of the downlink data stored in the data buffer is counted.
  • the base station is in the first authorization according to the second scheduling command or the third scheduling command.
  • the method may further include the following steps: The base station accumulates the number of transmissions of the downlink data that fails to be transmitted by using the first unlicensed frequency. For example, each time the base station retransmits the downlink data that failed to be transmitted, the base station adds 1 to the number of transmissions of the downlink data.
  • a scheduling command is used by the base station to indicate that the first unlicensed spectrum is used to perform uplink data transmission with the terminal.
  • the base station performs data transmission with the terminal on the first unlicensed spectrum according to the first scheduling command, including:
  • the base station receives uplink data that is sent by the terminal on the first unlicensed spectrum according to the first scheduling command.
  • A4b The base station decodes the received uplink data, and sends a fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received uplink data.
  • the terminal may obtain the indication of the base station by using the first scheduling command, where the terminal obtains, by using the first scheduling command, that the base station indicates that the first unlicensed spectrum can be used to send the uplink data,
  • the terminal can send the uplink data to the base station on the first unlicensed spectrum according to the first scheduling command, and the base station can receive the uplink data sent by the terminal on the first unlicensed spectrum, so that the first non-base between the base station and the terminal can be implemented.
  • Authorizing the spectrum for data transmission When the base station receives the uplink data sent by the terminal on the first unlicensed spectrum, the base station may decode the received uplink data, and the base station may first decode the received uplink data according to the situation.
  • the terminal may send a fourth response message to the terminal on the unlicensed spectrum or the first authorized spectrum, and the terminal may receive the fourth response message that is sent back by the base station on the first unlicensed spectrum or the first authorized spectrum.
  • the fourth response message is specifically an ACK if the uplink data received by the base station is correctly decoded. If the base station decodes the received uplink data incorrectly, the fourth response message is specifically a NACK.
  • the base station of step A4b sends a fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received uplink data.
  • the base station of step A4b sends a fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received uplink data.
  • the base station sends a fourth scheduling command to the terminal, where the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum to retransmit the uplink data that fails to be transmitted by using the first unlicensed frequency;
  • the base station receiving terminal retransmits the uplink data that fails to be transmitted by using the first unlicensed spectrum on the first unlicensed spectrum according to the fourth scheduling command;
  • A4e The base station decodes the received uplink data, and sends a fifth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received uplink data.
  • the base station feeds back the NACK to the terminal, it indicates that the base station does not correctly decode the uplink data, so the base station fails to receive the uplink data this time, and the uplink data that fails to be transmitted using the first unlicensed frequency is still saved in the data cache. If yes, the base station performs step A4c, generates a fourth scheduling command, and sends the fourth scheduling command to the terminal, the base station indicates to the terminal that the base station will retransmit the downlink data that fails to be transmitted by using the first unlicensed frequency, and the base station indicates to the terminal by using the fourth scheduling command.
  • the first unlicensed spectrum will be used for retransmission.
  • the base station sends a fourth scheduling command to the terminal, and the base station explicitly indicates to the terminal that the terminal uses the first unlicensed spectrum retransmission failed uplink data, and then the base station In the first unlicensed spectrum, the terminal may retransmit the uplink data that fails to be transmitted.
  • the base station may also send a fifth scheduling command to the terminal, indicating that the terminal can use the authorized frequency to receive the terminal.
  • the step A4b may further include the following steps after the fourth response message is sent to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received uplink data:
  • the base station sends a fifth scheduling command to the terminal, where the fifth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized spectrum to retransmit the uplink data that fails to be transmitted by using the first unlicensed spectrum;
  • the base station receiving terminal retransmits the uplink data that fails to be transmitted by using the first unlicensed frequency on the first authorized spectrum or the second authorized spectrum according to the fifth scheduling command;
  • the base station decodes the received uplink data, and sends a sixth response message to the terminal on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received uplink data.
  • the base station feeds back the NACK to the terminal, it indicates that the base station does not correctly decode the uplink data, so the base station fails to receive the uplink data this time, because the uplink data that fails to use the first unlicensed spectrum transmission is still in the data buffer of the terminal. If the data is saved, the base station performs step A4f to generate a fifth schedule. And transmitting, to the terminal, the base station indicates to the terminal that the base station will retransmit downlink data that fails to use the first unlicensed spectrum transmission, and the base station indicates to the terminal by using the fifth scheduling command that the first authorized spectrum or the second authorized spectrum is to be used. pass.
  • the base station can use the licensed spectrum when instructing the terminal to retransmit the uplink data. For example, the base station can use the first authorized spectrum used by the terminal to feed back the fourth response message, and the base station may not use the base station.
  • the first authorized spectrum, but in the fifth scheduling command, indicates that the second authorized spectrum will be used.
  • the base station sends the fourth scheduling command and the fifth scheduling command to the terminal, and the base station explicitly indicates to the terminal that the terminal fails to retransmit the transmission.
  • Uplink data and then the terminal may retransmit the uplink data that failed to be transmitted in the first unlicensed spectrum, the first authorized spectrum, or the second authorized spectrum.
  • the base station may also send the sixth scheduling to the terminal. Command, but does not instruct the terminal to retransmit the uplink data that failed to transmit, please refer to the following detailed description:
  • the step A4b may further include the following steps after the fourth response message is sent to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received uplink data:
  • the base station sends a sixth scheduling command to the terminal, where the sixth scheduling command includes: the base station instructing the terminal to send the uplink data by using the first authorized spectrum or the second authorized spectrum;
  • the A4j the base station receiving terminal retransmits the uplink data that fails to be transmitted by using the first unlicensed frequency on the first authorized spectrum or the second authorized spectrum according to the sixth scheduling command;
  • A4k The base station decodes the received uplink data, and sends a seventh response message to the terminal on the first authorized spectrum or the second authorized spectrum according to the decoding condition of the received uplink data.
  • the base station may generate a sixth scheduling command and send it to the terminal, but does not indicate that the terminal can retransmit the uplink data that failed to be transmitted, but indicates that the terminal can use the first authorized spectrum or the second authorized spectrum to transmit the uplink data, that is,
  • the base station only indicates to the terminal which licensed spectrum (ie, the first authorized spectrum or the second authorized spectrum carried in the sixth scheduling command) can be used by the terminal, and does not indicate to the terminal whether the uplink data that failed to be transmitted can be retransmitted.
  • the terminal may send, according to the sixth scheduling command, the uplink data that fails to be transmitted by using the first unlicensed frequency on the first authorized spectrum or the second authorized spectrum, and the base station is at the receiving terminal.
  • the base station may decode the received downlink data when the uplink data is sent on the first authorized spectrum or the second authorized spectrum, and the base station
  • the seventh response message may be sent to the terminal according to the decoding status of the received uplink data.
  • the base station generates the first scheduling command, the second scheduling command, and the second routing command, respectively, in the embodiment of the present invention.
  • the third scheduling command, the fourth scheduling command, the fifth scheduling command, and the sixth scheduling command are examples of the base station.
  • the base station sends the first scheduling command, the second scheduling command, the third scheduling command, the fourth scheduling command, and the fifth scheduling command to the terminal.
  • the sixth scheduling command may be transmitted on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum. That is, the scheduling command sent by the base station to the terminal may use the licensed spectrum or an unlicensed spectrum.
  • the base station can obtain the monitoring result of monitoring the usage state of the unlicensed spectrum, and then determine the first unlicensed spectrum according to the monitoring result, and the base station can be implemented by using the first unlicensed spectrum.
  • the above embodiment describes the method of using the unlicensed spectrum implemented by the base station side in the present invention. Next, the method of using the unlicensed spectrum implemented by the terminal side in the present invention will be described.
  • An embodiment of the method for using the unlicensed spectrum of the present invention may be applied to a terminal, where the method may include: acquiring, by the terminal, a monitoring result for monitoring a usage state of the unlicensed spectrum; and determining, by the terminal, the first unlicensed spectrum according to the monitoring result, The first unlicensed spectrum determines an unlicensed spectrum to be used from the unlicensed spectrum that is monitored; the terminal uses the first unlicensed spectrum to perform data transmission with the base station.
  • a method for using an unlicensed spectrum may include the following steps:
  • the terminal acquires a monitoring result that monitors a usage state of the unlicensed spectrum.
  • the listening state of the unlicensed spectrum is monitored, and the terminal may obtain the monitoring result of monitoring the usage state of the unlicensed spectrum, where the monitoring result may include the use of an unlicensed spectrum that is monitored.
  • the status may also include the usage status of more than two unlicensed spectrums, and may also include the usage status of all unlicensed spectrums that are monitored.
  • the usage status of the unlicensed spectrum refers to a state in which the unlicensed frequency is used by neighboring nodes.
  • the usage status of the unlicensed spectrum may include a usage period, a length of time, a power strength, and the like of using the unlicensed spectrum.
  • phase Neighbor nodes refer to neighboring base stations of the listener and/or terminals served by neighboring base stations.
  • the neighboring node may further include a WiFi access point in the mobile network.
  • the terminal 201 obtains the monitoring result of monitoring the usage state of the unlicensed spectrum, and the terminal may be in the following manner: The terminal monitors the usage status of the unlicensed spectrum according to the indication of the base station, and generates a monitoring result. Or, the terminal requests the base station to request the base station to monitor the usage status of the unlicensed spectrum, and receives the monitoring result fed back by the base station. That is, the listener may be a base station or a terminal served by the base station. If the terminal itself monitors the usage status of the unlicensed spectrum, the terminal may generate the monitoring result by itself, and if the terminal requests the base station to listen, the base station performs the unlicensed spectrum.
  • the monitoring result includes a situation in which the listener monitors the usage status of one or more unlicensed spectrums. For example, after the unlicensed spectrum A is monitored, the usage period of the unlicensed spectrum A can be known, and each time the used spectrum is used. Length of time and power value, etc.
  • RRC Radio Resource Control
  • MAC Media Access Control
  • the specific method for the terminal to report the result of monitoring the usage status of the unlicensed spectrum may be implemented by using an RRC message, such as a measurement report, or by using a MAC layer message or a physical layer message.
  • RRC message such as a measurement report
  • MAC layer message or a physical layer message.
  • the terminal determines the first unlicensed spectrum according to the monitoring result.
  • the first unlicensed spectrum determines the unlicensed spectrum to be used from the unlicensed spectrum that is monitored.
  • the terminal may determine, according to the monitoring result, which unlicensed spectrum is to be used from all the unlicensed spectrums that are monitored, in the embodiment of the present invention, the determined unlicensed spectrum is recorded as The first unlicensed spectrum, the first unlicensed spectrum is an unlicensed spectrum that is determined to be used from the unlicensed spectrum that is being monitored.
  • the terminal determines that the first unlicensed spectrum used may be an unlicensed spectrum, or may be two or more unlicensed spectrums. No restrictions are imposed.
  • the terminal may also report the monitoring result to the base station, and the base station determines the first unlicensed spectrum.
  • the base station determines the first unlicensed spectrum.
  • the terminal determines the first unlicensed spectrum according to the monitoring result, and specifically includes the following steps: the terminal selects the idle unlicensed spectrum from all the unlicensed spectrums that are monitored according to the monitoring result, and determines the idle.
  • the unlicensed spectrum is the first unlicensed spectrum.
  • the idle unlicensed spectrum may refer to an unlicensed spectrum that has not been used for a certain period of time, and may also refer to an unlicensed spectrum that has not been used by neighboring nodes.
  • the terminal may further include the following steps:
  • the terminal sends a claim message to the neighboring node, and the message includes: the terminal declares the use status of the first unlicensed spectrum to the neighboring node, and the neighboring node is the terminal serving the neighboring base station of the terminal and/or the neighboring base station;
  • the terminal sends a notification message to the base station to instruct the base station to send a advertised message to the neighboring node according to the notification message, where the notification message includes a advertised message, and the advertised message includes: the terminal announces the usage status of the first unlicensed spectrum to the neighboring node, and the neighboring node is Neighboring base stations of the terminal and/or terminals served by neighboring base stations.
  • the terminal may declare the usage status of the first unlicensed spectrum determined by the terminal, for example, the usage period of the first unlicensed spectrum that the terminal claims to use, Specifically, the terminal may directly send a notification message to the neighboring node, and the terminal may also send a notification message to the base station, where the base station declares the usage status of the first unlicensed spectrum by the terminal.
  • the neighboring nodes of the terminal refer to neighboring base stations of the terminal, and/or terminals served by neighboring base stations.
  • the terminal declares to the neighboring node that the first unlicensed spectrum is used by the neighboring node, and the neighboring node (for example, the neighboring base station or the cell) can not participate in the competition when the terminal uses the first unlicensed spectrum resource after receiving the announcement message.
  • the competition is coordinated and the neighboring nodes avoid the first unlicensed spectrum, so that interference or collisions that may exist in the unlicensed spectrum can be avoided.
  • the terminal determines the first unlicensed spectrum according to the monitoring result. After that, the following steps can also be included:
  • the terminal and the neighboring node negotiate a state of use of the unlicensed spectrum that is monitored when the intercepted unlicensed spectrum is used, wherein the neighboring node is a terminal of the terminal and/or a terminal served by the neighboring base station.
  • the terminal may further negotiate with the neighboring node how to use the at least one unlicensed spectrum that is monitored, for example, the terminal and the neighboring node negotiate the use period of the unlicensed spectrum, The length of the time, the power strength, etc., the terminal can avoid the interference or conflict that is easily caused when the unlicensed spectrum is used. For example, after the terminal negotiates the usage status of the unlicensed spectrum with the neighboring node, When the terminal determines the first unlicensed spectrum used, the neighboring node can avoid the first unlicensed spectrum, thereby avoiding interference or collision that may exist in the unlicensed spectrum.
  • the terminal uses the first unlicensed spectrum to perform data transmission with the base station.
  • the terminal may use the determined first unlicensed spectrum to perform data transmission with the base station, so that the terminal can successfully use the unlicensed spectrum, and the terminal passes the pair.
  • the use of unlicensed spectrum increases the use of the entire spectrum of resources.
  • the determined first unlicensed spectrum used by the terminal may be used for downlink data transmission with the base station, and may also be used for uplink data transmission with the base station. Since the terminal first monitors through the unlicensed spectrum to determine the first unlicensed spectrum that can be used, the reliability and delay of the data transmission can be ensured when the first unlicensed spectrum is used for data transmission with the terminal. .
  • the terminal can monitor the unlicensed spectrum and determine the first unlicensed spectrum that can be used. When the first unlicensed spectrum is used for data transmission with the terminal, the success rate of data transmission can be effectively guaranteed.
  • the terminal uses the first unlicensed spectrum to perform data transmission with the base station, and specifically includes the following steps:
  • the terminal receives the transmission configuration parameter sent by the base station, where the transmission configuration parameter includes: information determined by the base station for using the cell of the first unlicensed spectrum;
  • the terminal allocates data on the first unlicensed spectrum according to the transmission configuration parameter.
  • the terminal receives the first scheduling command sent by the base station, where the first scheduling command includes: the base station instructs to use the first unlicensed spectrum to perform data transmission with the terminal;
  • the terminal performs data transmission with the base station on the first unlicensed spectrum according to the first scheduling command.
  • the terminal may acquire the transmission configuration parameter of the first unlicensed spectrum, where the transmission configuration parameter includes information for the cell that uses the first unlicensed spectrum, and may also
  • the radio bearer of the cell transmission data of the first unlicensed spectrum that can be used, the specific parameter may be an identifier of the radio bearer, or a logical channel identifier corresponding to the radio bearer, or a radio access network bearer identifier corresponding to the radio bearer, or wireless
  • the transmitting the configuration parameter further includes: competing for a competition parameter of the cell that uses the first unlicensed spectrum, where the contention parameter includes at least one of the following parameters: Whether it is necessary to monitor the available state of the first unlicensed spectrum, the length of time before the use of the cell, and the length of the random backoff before transmission after the first unlicensed spectrum is monitored before using the cell, and use the cell. How to use it.
  • the base station can monitor the available state of the first unlicensed spectrum before using the cell, and the base station can also set the length of the listening period before using the cell, for example, the interframe distance, and the base station can also monitor the time in the listening cell.
  • the length of the random backoff before the transmission is set, that is, the UE randomly selects a random backoff time window within the length of the random backoff, and the base station can also set the power threshold.
  • the base station can also set a specific manner of using the unlicensed spectrum cell, such as a periodic, one-time specific parameter, the length of each use, whether a request to send an RTS/CTS is required.
  • a specific manner of using the unlicensed spectrum cell such as a periodic, one-time specific parameter, the length of each use, whether a request to send an RTS/CTS is required.
  • the conditions for sending RTS/CTS such as the size threshold of the amount of data packets to be sent.
  • transmitting the configuration parameters further includes: using a quality of service evaluation parameter of the first unlicensed spectrum transmission data, and/or a channel quality evaluation parameter of the first unlicensed spectrum. That is, the base station can set the quality of service evaluation parameters and/or the channel quality evaluation parameters. After the terminal performs data transmission with the base station using the first unlicensed spectrum, the terminal acquires a quality of service evaluation result using the first unlicensed spectrum transmission data, and/or a channel quality evaluation result of the first unlicensed spectrum. The terminal can obtain the result of the service quality assessment and the channel quality assessment result when using the first unlicensed spectrum. Channel conditions, an assessment of the quality of service of the first unlicensed spectrum and an assessment of channel quality.
  • the terminal may set a quality of service evaluation parameter for transmitting data on the cell using the first unlicensed spectrum, such as a delay, a packet loss rate, and the terminal may also set a channel quality evaluation parameter for transmitting data on the cell using the first unlicensed spectrum. , such as power, interference, signal to noise ratio, etc.
  • step B2 the terminal configures the data transmission on the first unlicensed spectrum according to the transmission configuration parameter, and the terminal configures according to the configuration content of the transmission configuration parameter, thereby establishing the data transmission between the base station and the terminal by using the first unlicensed spectrum.
  • Data channel
  • the terminal further includes: the terminal sending a random access request message to the base station, and sending the message according to the base station
  • the random access response message adjusts the timing advance on the first unlicensed spectrum, thereby causing the terminal to maintain synchronization with the base station.
  • the base station may set some parameters related to performing random access on the cell using the first unlicensed spectrum, such as a random access resource, a random access code, a starting position, a size, and the like of the random access response message receiving window.
  • the transmitting configuration parameter further includes: a cell identifier for scheduling cell transmission data using the first unlicensed spectrum, for example, scheduling a cell using the first unlicensed spectrum as a cell using the licensed spectrum Identification, or cell index number, or cell frequency.
  • the transmitting the configuration parameter further includes: after transmitting the data on the cell using the first unlicensed spectrum, continuing to transmit related parameters of the data on the cell using the licensed spectrum, such as which one can be used The cell on the licensed spectrum is transmitted, and how long it waits to continue transmission on the cell using the licensed spectrum.
  • Step B3 The terminal receives the first scheduling command sent by the base station, where the first scheduling command is used by the base station to indicate that the first unlicensed spectrum is used to perform data transmission with the terminal.
  • the first scheduling command may be used by the base station to indicate that the first unlicensed spectrum is used.
  • performing downlink data transmission with the terminal where the first scheduling command may also indicate that the base station uses the first unlicensed spectrum to perform uplink data transmission with the terminal. It should be noted that, when the base station needs to use other spectrum resources to perform data transmission with the terminal, the base station may continue to send other scheduling commands to the terminal, which will be described in detail in the following embodiments.
  • the base station and the terminal can perform data transmission according to the scheduling command.
  • the first scheduling command is that the base station indicates that the first unlicensed spectrum is used to perform downlink data transmission with the terminal
  • the step B4 is configured according to the first scheduling command in the first unlicensed spectrum.
  • Data transmission with the base station including:
  • the terminal receives downlink data that is sent by the base station on the first unlicensed spectrum according to the first scheduling command.
  • the terminal decodes the received downlink data, and sends a first response message to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received downlink data.
  • the terminal may obtain the indication of the base station by using the first scheduling command, and the base station may send the downlink data to the terminal on the first unlicensed spectrum according to the first scheduling command, where the terminal may Receiving the downlink data sent by the base station on the first unlicensed spectrum, so that the data transmission between the base station and the terminal by using the first unlicensed spectrum can be implemented, and when the terminal receives the downlink data sent by the base station on the first unlicensed spectrum, The terminal may decode the received downlink data, and the terminal may send the first response message to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received downlink data, and the base station may receive the terminal.
  • the first unlicensed spectrum or the first response message fed back on the first licensed spectrum When the terminal sends the first response message to the base station, the terminal may feed back on the first unlicensed spectrum, and the terminal may not use the first unlicensed spectrum, but feed back to the base station on the first authorized spectrum.
  • the first authorized spectrum is a network channel for communication between the base station and the terminal. That is, for the terminal, although the terminal receives the downlink data on the first unlicensed spectrum, the terminal may use the first unlicensed spectrum to feed back when feeding back the first response message to the base station, and may also use the first
  • the spectrum is authorized to be fed back because the data retransmission is usually convenient on the licensed spectrum. However, in the unlicensed spectrum, due to the competition of resources, it may not be possible to secure resources when retransmitting.
  • the terminal B42 sends the first response to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding condition of the received downlink data. After the message, it also includes the following steps:
  • the terminal receives a second scheduling command sent by the base station, where the second scheduling command includes: the base station notifying the terminal that the base station will use the first authorized spectrum or the second authorized spectrum to retransmit the downlink data that fails to be transmitted by using the first unlicensed spectrum;
  • the terminal receiving base station is in the first authorized spectrum or the second authorized spectrum according to the second scheduling command. Downlink data sent to the terminal and failed to be transmitted using the first unlicensed frequency;
  • the terminal decodes the received downlink data, and sends a second response message to the base station on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received downlink data.
  • the base station receives the NACK from the terminal, it indicates that the terminal does not correctly decode the downlink data, and the base station can learn that the downlink data transmission fails, because the downlink data that fails to use the first unlicensed spectrum transmission is still in the data cache. If the data is saved, the base station performs step B43, and the terminal receives the second scheduling command sent by the base station, and the base station indicates to the terminal that the base station will retransmit the downlink data that fails to use the first unlicensed spectrum transmission, because the base station uses the first unlicensed spectrum. The transmission fails, so the base station can use the licensed spectrum when retransmitting the downlink data. For example, the base station can use the first authorized spectrum used by the terminal to feed back the first response message, and the base station can also not use the first authorized spectrum, but in the second. The second authorized spectrum will be used in the scheduling command.
  • the terminal receives the second scheduling command, and the base station explicitly indicates to the terminal that the downlink data that the transmission fails to be retransmitted, and then the base station is in the first authorized spectrum or the second authorization.
  • the spectrum retransmits the downlink data that fails to be transmitted, and the terminal receives the downlink data that the base station fails to transmit using the first unlicensed frequency on the first authorized spectrum or the second authorized spectrum.
  • the base station may also send a third scheduling command to the terminal, but does not indicate downlink data that will be retransmitted for transmission failure. Please refer to the following detailed description:
  • the step B42 after the first response message is sent to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding of the received downlink data, the method further includes:
  • the terminal receives a third scheduling command sent by the base station, where the third scheduling command includes: the base station indicates to the terminal that the base station sends the downlink data by using the first authorized spectrum or the second authorized spectrum;
  • the terminal receiving base station sends downlink data to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command.
  • the terminal decodes the received downlink data, and sends a third response message to the base station on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received downlink data.
  • the base station may generate a third scheduling command and send it to the terminal, but does not indicate the downlink data that will be retransmitted, but indicates that the terminal will use the first authorized spectrum or the second authorized spectrum to transmit downlink data. That is, the base station only indicates to the terminal which licensed spectrum to use (ie, the third scheduling) The first authorized spectrum or the second authorized spectrum carried in the command, and does not indicate to the terminal downlink data that the retransmission transmission fails.
  • the base station sends the third scheduling command to the terminal, the base station sends downlink data to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command, where the terminal is on the first authorized spectrum or the second authorized spectrum.
  • the terminal may decode the received downlink data, and the terminal may send a third response message to the base station according to the decoding situation of the received downlink data, and the base station may receive the terminal in the first authorized spectrum or the first 2. A third response message that is fed back on the spectrum.
  • the downlink data sent by the base station may be new downlink data, or may be downlink data that fails to be transmitted by using the first unlicensed spectrum, that is, the downlink data received by the terminal is sent by the base station according to the third scheduling command.
  • the downlink data that failed to be transmitted using the first unlicensed frequency may be new downlink data, or may be downlink data that fails to be transmitted by using the first unlicensed spectrum, that is, the downlink data received by the terminal is sent by the base station according to the third scheduling command.
  • the downlink data that failed to be transmitted using the first unlicensed frequency may be new downlink data, or may be downlink data that fails to be transmitted by using the first unlicensed spectrum, that is, the downlink data received by the terminal is sent by the base station according to the third scheduling command.
  • the downlink data sent by the terminal using the unlicensed spectrum receiving base station is exemplified, and then the terminal is not authorized.
  • the spectrum is sent to the base station for transmitting the uplink data.
  • the step B4 is configured according to the first scheduling command. Data transmission with the base station on an unlicensed spectrum, including:
  • the terminal sends the uplink data to the base station on the first unlicensed spectrum according to the first scheduling command.
  • the terminal receives the fourth response message sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum.
  • the terminal may obtain the indication of the base station by using the first scheduling command, where the terminal obtains, by using the first scheduling command, that the base station indicates that the first unlicensed spectrum can be used to send the uplink data,
  • the terminal can send the uplink data to the base station on the first unlicensed spectrum according to the first scheduling command, and the base station can receive the uplink data sent by the terminal on the first unlicensed spectrum, so that the first non-base between the base station and the terminal can be implemented.
  • Authorizing the spectrum for data transmission When the base station receives the uplink data sent by the terminal on the first unlicensed spectrum, the base station may decode the received uplink data, and the base station may first decode the received uplink data according to the situation.
  • the terminal may send a fourth response message to the terminal on the unlicensed spectrum or the first authorized spectrum, and the terminal may receive the fourth response message that is sent back by the base station on the first unlicensed spectrum or the first authorized spectrum.
  • the fourth response message is specifically ACK
  • the fourth response message is specifically NACK
  • the terminal B4a sends the uplink data to the base station on the first unlicensed spectrum according to the first scheduling command, which may include: B4al, the terminal from the multiplexing encapsulation entity. Obtaining the uplink data to be sent, and storing the uplink data to be sent in the data cache corresponding to the HARQ process;
  • B4a2 The terminal sends the uplink data to be sent to the base station on the first unlicensed spectrum according to the first scheduling command.
  • the terminal includes a multiplexed encapsulation entity and a data cache, and the data cache corresponds to the HARQ process, where the data cache is used to read data during the HARQ, and the terminal can obtain the uplink data to be sent from the multiplex encapsulation entity. And storing in the data buffer, and then transmitting the uplink data to the base station on the first unlicensed spectrum.
  • the step B4b receives the fourth response message sent by the base station to the terminal on the first unlicensed spectrum or the first licensed spectrum, and further includes:
  • the terminal receives a fourth scheduling command sent by the base station, where the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum to retransmit the uplink data that fails to be transmitted by using the first unlicensed spectrum;
  • the terminal retransmits the uplink data that fails the first unlicensed spectrum transmission to the base station on the first unlicensed spectrum according to the fourth scheduling command;
  • the terminal receiving base station sends a fifth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum.
  • the base station feeds back the NACK to the terminal, it indicates that the base station does not correctly decode the uplink data, so the base station fails to receive the uplink data this time, and the uplink data that fails to use the first unlicensed spectrum transmission remains in the data cache.
  • the base station generates a fourth scheduling command and sends the information to the terminal, where the terminal may receive the downlink data that the base station retransmits using the first unlicensed frequency transmission, and the terminal specifically uses the first unlicensed spectrum to receive the base station by using the fourth scheduling command. Retransmission.
  • the terminal receives the fourth scheduling command sent by the base station, and the base station explicitly indicates to the terminal that the terminal can use the first unlicensed spectrum to retransmit the uplink data that failed to be transmitted, and then The base station may receive, in the first unlicensed spectrum, uplink data that the terminal retransmits the transmission failure.
  • the base station may also send the The five scheduling commands indicate that the terminal can use the authorization frequency to receive the uplink data of the transmission failure of the terminal, please refer to the following detailed description:
  • the step B4b receives the fourth response message sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum, and further includes:
  • the terminal receives the fifth scheduling command sent by the base station, where the fifth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized spectrum to retransmit the uplink data that fails to be transmitted by using the first unlicensed spectrum;
  • the terminal retransmits the uplink data that fails the first unlicensed spectrum transmission to the base station according to the fifth scheduling command on the first authorized spectrum or the second authorized spectrum;
  • the terminal receives a sixth response message sent by the base station to the terminal on the first authorized spectrum or the second authorized spectrum.
  • the terminal may receive the fifth scheduling command sent by the base station, and the base station indicates to the terminal that the base station will retransmit the downlink data that fails to be transmitted by using the first unlicensed frequency, and the base station indicates to the terminal by using the fifth scheduling command. Retransmit using the first licensed spectrum or the second authorized spectrum.
  • the base station can use the licensed spectrum when instructing the terminal to retransmit the uplink data. For example, the base station can use the first authorized spectrum used by the terminal to feed back the fourth response message, and the base station may not Instead of using the first authorized spectrum, it is indicated in the fifth scheduling command that the second authorized spectrum will be used.
  • the base station sends a fourth scheduling command and a fifth scheduling command to the terminal, and the base station explicitly indicates to the terminal that the terminal fails to retransmit the transmission.
  • Uplink data and then the terminal may retransmit the uplink data that failed to be transmitted in the first unlicensed spectrum, the first authorized spectrum, or the second authorized spectrum.
  • the base station may also send the sixth scheduling to the terminal. Command, but does not instruct the terminal to retransmit the uplink data that failed to transmit, please refer to the following detailed description:
  • the step B4b receives the fourth response message sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum, and further includes:
  • the terminal receives a sixth scheduling command sent by the base station, where the sixth scheduling command includes: The terminal sends the uplink data by using the first authorized spectrum or the second authorized spectrum;
  • the terminal retransmits the uplink data that fails the first unlicensed spectrum transmission to the base station according to the sixth scheduling command on the first authorized spectrum or the second authorized spectrum;
  • B4k The terminal receives a seventh response message sent by the base station to the terminal on the first authorized spectrum or the second authorized spectrum.
  • the base station may generate a sixth scheduling command and send it to the terminal, but does not indicate that the terminal can retransmit the uplink data that failed to be transmitted, but indicates that the terminal can use the first authorized spectrum or the second authorized spectrum to transmit the uplink data, that is,
  • the base station only indicates to the terminal which licensed spectrum (ie, the first authorized spectrum or the second authorized spectrum carried in the sixth scheduling command) can be used by the terminal, and does not indicate to the terminal whether the uplink data that failed to be transmitted can be retransmitted.
  • the terminal may send, according to the sixth scheduling command, the uplink data that fails to be transmitted by using the first unlicensed frequency on the first authorized spectrum or the second authorized spectrum, and the base station is at the receiving terminal.
  • the base station may decode the received downlink data, and the base station may send a seventh response message to the terminal according to the decoding status of the received uplink data.
  • the uplink data that fails to be transmitted by using the first unlicensed frequency is obtained by:
  • the terminal acquires uplink data that fails to be transmitted by using the first unlicensed spectrum from the data buffer corresponding to the HARQ process.
  • the terminal when the terminal stores the uplink data in the data cache, the terminal may also set the number of transmissions to the uplink data stored in the data cache, that is, the uplink data stored in the data cache. The number of transmissions is counted. Specifically, after the terminal retransmits the uplink data that fails to be transmitted by using the first unlicensed frequency to the base station, the terminal accumulates the number of transmissions of the uplink data that fails to use the first unlicensed spectrum transmission. For example, whenever the terminal retransmits the uplink data that failed to be transmitted, the terminal increments the number of transmissions of the uplink data by one.
  • the transmitting the configuration parameter further includes: using a quality of service evaluation parameter of the first unlicensed spectrum transmission data, and/or a channel quality evaluation parameter of the first unlicensed spectrum, that is, the base station may set the service a quality evaluation parameter and/or a channel quality evaluation parameter, after the terminal performs data transmission with the base station using the first unlicensed spectrum, the terminal acquires a quality of service evaluation result using the first unlicensed spectrum transmission data, and/or the first unlicensed spectrum Channel quality assessment results. Terminal through service The quality assessment result and the channel quality assessment result can obtain the channel condition when the first unlicensed spectrum is used, and realize the evaluation of the quality of service of the first unlicensed spectrum and the evaluation of the channel quality.
  • the base station generates the first scheduling command, the second scheduling command, and the third scheduling, respectively, for the terminal to use the unlicensed spectrum to send the uplink data to the base station.
  • the command, the fourth scheduling command, the fifth scheduling command, and the sixth scheduling command Specifically, the base station sends the first scheduling command, the second scheduling command, the third scheduling command, the fourth scheduling command, and the fifth scheduling command to the terminal.
  • the six scheduling commands may be transmitted on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum. That is, the scheduling command sent by the base station to the terminal may use the licensed spectrum or the unlicensed spectrum.
  • the terminal can obtain the monitoring result of monitoring the usage state of the unlicensed spectrum, and then determine the first unlicensed spectrum according to the monitoring result, and the base station can be implemented by using the first unlicensed spectrum.
  • Data transfer between terminals Since the first unlicensed spectrum is an unlicensed spectrum determined from the intercepted unlicensed spectrum based on the interception result, data communication between the base station and the terminal is implemented using the first unlicensed spectrum that is determined to be usable.
  • the method for using the unlicensed spectrum provided by the embodiment of the present invention is specifically described in the implementation manner of the base station and the terminal in order to better understand and implement the foregoing solution.
  • FIG. 3 is a schematic diagram of a function implementation in a base station according to an embodiment of the present invention, where RLC1, RLC2, RLC3, and RLC4 are deployed in a Radio Link Control (RLC) layer.
  • RLC Radio Link Control
  • MAC Media Access Control
  • HARQ entity for Pcell HARQ entity for Scell, HARQ entity for U-LTE, Unlicensed media access control (Unlicensed) MAC, U-MAC) Entity, Random Access Entity, Announcement / Negotiation entity.
  • the HARQ entity for Pcell, the HARQ entity for Scell, and the HARQ entity for U-LTE can implement an uplink shared channel (Uplink Shared Channel) under the control of a controller.
  • Uplink Shared Channel Uplink Shared Channel
  • UL-SCH uplink shared channel
  • Downlink Shared Channel Downlink Shared Channel
  • the U-MAC entity is mainly used to be responsible for operations related to unlicensed words under the control of the controller.
  • the main functions include one or more of the following:
  • the RandomAccess entity is configured to perform a random access procedure on the unlicensed spectrum.
  • the claim and negotiation entities are used to declare the use status of the unlicensed spectrum to neighboring nodes under the control of the controller, and to negotiate the use of the unlicensed spectrum with neighboring nodes.
  • the base station further includes radio resource control (Radio
  • RRC Resource Control
  • LBT Before Talk, LBT parameters, time interval (Duration) parameters, frequency (frequency) parameters, etc. are reconfigured.
  • FIG. 3-a the implementation function of the base station is schematically illustrated.
  • FIG. 3 can also be described as a schematic diagram of the implementation function of the terminal.
  • all RLCs can use either LTE Cell (such as PCell and Scell in Figure 3-a) for data transmission, or U-LTE Scell for data transmission, corresponding to Figure 3-a.
  • LTE Cell such as PCell and Scell in Figure 3-a
  • U-LTE Scell for data transmission
  • the HARQ entity for U-LTE may have one or more.
  • FIG. 3B is a schematic diagram of another function implementation in a base station according to an embodiment of the present invention.
  • RLC1 and RLC2 in the RLC layer only use LTE Cell (FIG. 3).
  • FIG. 3 is a schematic diagram of another function implementation in a base station according to an embodiment of the present invention. Different from FIG. 3-a and FIG. 3-b, RLC1 and RLC2 in the RLC layer only use LTE.
  • PCell and Scell in Figure 3-c performs data transmission, corresponding to the HARQ entity for Pcell/Scell in the figure.
  • RLC3 and RLC4 can use LTE Cell (PCell and Scell in Figure 3-c) for data transmission.
  • the U-LTE Scell can be used for data transmission, which corresponds to the HARQ entity for Pcell/Scell and the HARQ entity for U-LTE in the figure.
  • Step 1 The base station configures the function of performing data transmission on the unlicensed spectrum.
  • the specific configuration mode may be that the message is broadcast through an RRC message or a system.
  • Specific parameters can include:
  • a cell of one or more unlicensed spectrums may be used, and the specific parameter may be a cell identifier of a cell using an unlicensed spectrum, or a cell index number, or a cell frequency point;
  • a radio bearer that can transmit data using a cell of an unlicensed spectrum may be an identifier of the radio bearer, or a logical channel identifier corresponding to the radio bearer, or a radio access bearer identifier corresponding to the radio bearer, or a radio bearer corresponding to the radio bearer Type of service, or the priority corresponding to the radio bearer, or the QoS requirement corresponding to the radio bearer;
  • related parameters of the unlicensed spectrum resources including:
  • a Whether it is necessary to monitor whether the unlicensed spectrum is available before using the cell of the unlicensed spectrum; b. the length of time before the cell using the unlicensed spectrum, such as IFS;
  • the time length of the random backoff before the transmission is initiated after the unlicensed spectrum is available, that is, the UE randomly selects a random backoff time window within the length of the random backoff;
  • the power threshold when the power is lower than the number, the unlicensed spectrum cell resource can be used;
  • the specific manner of the cell using the unlicensed spectrum may include: The period of use, the length of each use, such as Duration, whether the RTS/CTS mechanism is required, the condition for sending RTS/CTS, such as the size threshold of the amount of data packets to be sent, etc.;
  • an identifier of a cell for using a licensed spectrum for transmitting data of a cell using an unlicensed spectrum such as a cell identifier, or a cell index number, or a cell frequency point;
  • the relevant parameters that continue to be transmitted on the licensed spectrum such as which cell can be transmitted on the cell using the unlicensed spectrum, wait for how long it can continue on the cell using the licensed spectrum. Transmission, etc.
  • Quality of service evaluation parameters for transmitting data on cells using unlicensed spectrum such as delay, packet loss rate, or channel quality estimation parameters of unlicensed spectrum, such as power, interference, signal to noise ratio, etc.
  • Step 2 After the terminal is configured according to the foregoing transmission configuration parameter, the configuration completion message is sent to the base station, and then, for the base station, step 3a may be performed, and the terminal may perform step 3b.
  • Step 3a The base station monitors whether the unlicensed spectrum is available, uses the unlicensed spectrum for data transmission, random access, etc., and performs the use of the unlicensed spectrum on the unlicensed spectrum, and negotiates the unlicensed spectrum with the neighboring node. Mode of use, quality of service assessment of data transmitted over unlicensed spectrum, or channel quality assessment of licensed spectrum;
  • Step 3b The UE monitors whether the unlicensed spectrum is available, uses the unlicensed spectrum to claim the use of the unlicensed spectrum on the unlicensed spectrum, performs data transmission, random access, and performs service quality assessment on the unlicensed spectrum, or Operations such as channel quality assessment of unlicensed spectrum.
  • the data transmission process for steps 3a and 3b will be described in detail below.
  • the embodiment of the present invention as described below is a process of performing data transmission on an unlicensed spectrum based on the foregoing embodiment.
  • This embodiment assumes that the radio bearer can be transmitted on both the unlicensed spectrum and the licensed spectrum. For details, see the descriptions in Divings 3-a to 3-c.
  • the unlicensed spectrum can be used for retransmission. If the subsequent unlicensed spectrum cannot be used for retransmission, the licensed spectrum can be borrowed for retransmission.
  • the transmission process according to the uplink and downlink data is respectively described as follows:
  • Step 1 The UE receives a first scheduling command sent by the base station, where the first scheduling command indicates a base
  • the station will use the first unlicensed spectrum for transmission. If the base station transmits new data, the UE can obtain data from the physical layer (for example, obtains a Protocol Data Unit (PDU)), and stores it in the HARQ process. Data is cached and decoded. If the base station is retransmitting data, the Bay's J UE may attempt to separately decode or combine the data in the data buffer corresponding to the previously existing HARQ process.
  • PDU Protocol Data Unit
  • the base station Before the first scheduling command is sent to the UE, the base station first configures a cell that uses the first unlicensed spectrum to obtain a transmission configuration parameter of the first unlicensed spectrum, where the transmission configuration parameter includes, for using the first unlicensed spectrum.
  • the information of the cell for example, the cell identifier of the first unlicensed spectrum, or the cell index number, or the cell frequency point, may also include: the cell bandwidth of the first unlicensed spectrum that can be used, and the transmission
  • the configuration parameter may further include: a radio bearer of the cell transmission data of the first unlicensed spectrum that may be used, and the specific parameter may be an identifier of the radio bearer, or a logical channel identifier corresponding to the radio bearer, or a radio access network bearer corresponding to the radio bearer.
  • the transmitting the configuration parameter further includes: competing for a competition parameter of the cell that uses the first unlicensed spectrum, where the contention parameter includes at least one of the following parameters: Whether it is necessary to monitor the available state of the first unlicensed spectrum, the length of time before the use of the cell, and the length of the random backoff before transmission after the first unlicensed spectrum is monitored before using the cell, and use the cell. How to use it.
  • the base station can monitor the available state of the first unlicensed spectrum before using the cell, and the base station can also set the length of the listening period before using the cell, for example, the interframe distance, and the base station can also monitor the time in the listening cell.
  • the length of the random backoff before the transmission is set, that is, the UE randomly selects a random backoff time window within the length of the random backoff, and the base station can also set the power threshold.
  • the base station can also set a specific manner of using the unlicensed spectrum cell, such as a periodic, one-time specific parameter, the length of each use, and whether an RTS/CTS mechanism is required.
  • the conditions for sending RTS/CTS are the threshold of the amount of data packets to be sent, and so on.
  • transmitting the configuration parameters further includes: using a quality of service evaluation parameter of the first unlicensed spectrum transmission data, and/or a channel quality evaluation parameter of the first unlicensed spectrum. That is, the base station can set the quality of service evaluation parameters and/or the channel quality evaluation parameters. After the base station performs data transmission with the terminal using the first unlicensed spectrum, the base station acquires a quality of service evaluation result using the first unlicensed spectrum transmission data, and/or a channel quality evaluation result of the first unlicensed spectrum. The base station can obtain the channel condition when the first unlicensed spectrum is used by using the quality of service evaluation result and the channel quality evaluation result, and implement the evaluation of the quality of service of the first unlicensed spectrum and the evaluation of the channel quality.
  • the base station Before transmitting the first scheduling command to the terminal, the base station may further send the transmission configuration parameter to the terminal, and the terminal may configure the data transmission on the first unlicensed spectrum, and the terminal configures according to the configuration content of the transmission configuration parameter, thereby A data channel is constructed between the base station and the terminal to transmit data using the first unlicensed spectrum.
  • the method may further include the following steps: the base station allocates a random access resource to the terminal, so that the terminal maintains synchronization with the base station.
  • the terminal may initiate a random access to the base station, and the base station adjusts the timing advance of the terminal on the first unlicensed spectrum according to the random access request, and sends the timing advance to the terminal through the random access response message.
  • the base station may set some parameters related to performing random access on the cell using the first unlicensed spectrum, such as a random access resource, a random access code, a starting position, a size, and the like of the random access response message receiving window.
  • the base station sends a first scheduling command to the terminal according to the transmission configuration parameter, where the first scheduling command is used by the base station to indicate that the first unlicensed spectrum is used to perform data transmission with the terminal.
  • the first scheduling command may be used by the base station to indicate that the first non-authorization is used.
  • the spectrum and the terminal perform downlink data transmission, and the first scheduling command may also indicate to the base station that the first unlicensed spectrum is used to perform uplink data transmission with the terminal. It should be noted that, when the base station needs to use other spectrum resources to perform data transmission with the terminal, the base station may further send other scheduling commands to the terminal, which will be described in detail in the following embodiments.
  • Step 2 The UE feeds back the first response message to the base station according to the decoding situation of the data. If correctly decoded, the UE feeds back the ACK by using the first response message. If not correctly decoded, the UE feeds back the NACK by using the first response message.
  • Step 3 The UE receives a second scheduling command sent by the base station, where the second scheduling command indicates that the base station will transmit data on the first unlicensed spectrum before retransmitting the first authorized spectrum or the second authorized spectrum, then the UE may The physical layer obtains data (MAC PDU) and attempts to separately decode or data in the data buffer corresponding to the HARQ process received by the corresponding first unlicensed spectrum. Line merge decoding. And sending a feedback second response message to the base station according to the decoding situation.
  • MAC PDU data
  • Line merge decoding Line merge decoding.
  • the base station notifies the UE to transmit data on the first unlicensed spectrum before retransmitting the first authorized spectrum or the second authorized spectrum, where the second scheduling command may be displayed.
  • the indication that the scheduling command is used to retransmit which HARQ process corresponding to the first unlicensed spectrum is transmitted for example, includes a cell identifier and a HARQ process identifier that use the first unlicensed spectrum.
  • the base station may further send a third scheduling command to the UE, where the third scheduling command may not carry any indication about retransmission, and the UE may use the third scheduling command.
  • the third scheduling command may not carry any indication about retransmission, and the UE may use the third scheduling command.
  • data is received and decoded on the first authorized spectrum or the second authorized spectrum notified by the scheduling command.
  • the data may be data that has failed to be transmitted on the first unlicensed spectrum.
  • Step 1 The UE receives a first scheduling command sent by the base station, where the base station requests the UE to perform data transmission on the first unlicensed spectrum, and if the UE transmits new data, obtains data from the multiplexing encapsulation entity ( For example, the MAC PDU is stored in the data buffer corresponding to the HARQ process, and the uplink data is transmitted to the base station on the first unlicensed spectrum, and the number of transmissions of the new data is set to zero.
  • the MAC PDU is stored in the data buffer corresponding to the HARQ process, and the uplink data is transmitted to the base station on the first unlicensed spectrum, and the number of transmissions of the new data is set to zero.
  • Step 2 The UE receives the fourth response message or the fourth scheduling command that is fed back by the base station, where the base station requests the UE to retransmit the data on the first unlicensed spectrum, and the UE is in the data cache corresponding to the HARQ process. Take out the data and perform HARQ retransmission. Correspondingly, the number of transmissions of this data is increased by one on the previous basis.
  • Step 3 The UE receives a fifth scheduling command sent by the base station, where the base station requires the UE to retransmit the data transmitted on the first unlicensed spectrum before retransmitting the first authorized spectrum or the second authorized spectrum, and the UE may
  • the data is taken out from the corresponding data buffer of the HARQ of the first unlicensed spectrum, and is transmitted on the first authorized spectrum or the second authorized spectrum notified by the base station.
  • the number of transmissions of the data can be set to 0, or 1 is added based on the number of transmissions of the data recorded on the first unlicensed spectrum.
  • the UE receives the data that is transmitted on the first unlicensed spectrum before the UE retransmits the first authorized spectrum or the second authorized spectrum in the fifth scheduling command sent by the base station, and the fifth scheduling is performed.
  • the command may be displayed indicating that the scheduling command is for retransmitting data in a data buffer corresponding to which HARQ process transmitted on the unlicensed spectrum.
  • the cell identifier and the HARQ process identifier using the first unlicensed spectrum are included.
  • the UE may also receive the sixth scheduling command sent by the base station, where the sixth scheduling command may implicitly indicate that the scheduling command is used to retransmit the data corresponding to the HARQ process transmitted on the first unlicensed spectrum.
  • it can be implemented as follows:
  • the UE When the UE receives the sixth scheduling command, where the sixth scheduling command indicates that the data is transmitted on the first authorized spectrum or the second authorized spectrum, the UE defaults that it should be preferentially used for transmission on the first unlicensed spectrum before transmission. But there is no successful data. That is, the UE first attempts to acquire data from the data cache corresponding to the HARQ process corresponding to the first unlicensed spectrum according to the scheduling command. If there is no data suitable for transmission in the data cache corresponding to the HARQ process corresponding to the first unlicensed spectrum, Data is obtained from the multiplexed encapsulation entity for transmission.
  • the conditions suitable for transmission are as follows: There is data that needs to be retransmitted, and / or the size of the retransmitted data is the same as the size of the data scheduled in the scheduling command.
  • the sixth scheduling command indicates that after transmitting the data on the first authorized spectrum or the second authorized spectrum, if it notifies that the transmitted data size is transmitted on the first unlicensed spectrum but not yet If the data size is the same, and the data is not successfully transmitted, the UE obtains data from the data cache corresponding to the HARQ process corresponding to the first unlicensed spectrum.
  • the UE may preferentially obtain data from the data cache corresponding to the HARQ process corresponding to the first unlicensed spectrum, and then in the first authorized spectrum or the first The transmission is performed on the licensed spectrum, and the purpose is to continue the transmission of the data on the first unlicensed spectrum without the successful transmission on the first authorized spectrum or the second authorized spectrum.
  • the base station and the terminal can obtain the monitoring result of monitoring the usage state of the unlicensed spectrum, and then determine the first unlicensed spectrum according to the monitoring result, and use the first unlicensed spectrum.
  • Data transmission between the base station and the terminal can be achieved. Since the first unlicensed spectrum is an unlicensed spectrum determined from the intercepted unlicensed spectrum based on the interception result, data communication between the base station and the terminal is realized by determining the first unlicensed spectrum that can be used.
  • a base station 400 may include: an obtaining module 401, an unlicensed spectrum determining module 402, and a transmitting module 403, where
  • the obtaining module 401 is configured to obtain a monitoring result of monitoring the usage status of the unlicensed spectrum.
  • the unlicensed spectrum determining module 402 is configured to determine, according to the monitoring result, a first unlicensed spectrum, where the first unlicensed spectrum is a slave
  • the unlicensed spectrum that is monitored is used to determine the unlicensed spectrum to be used; and the transmission module 403 is configured to perform data transmission with the terminal by using the first unlicensed spectrum.
  • the transmission module 403 includes:
  • a parameter obtaining sub-module 4031 configured to acquire a transmission configuration parameter of the first unlicensed spectrum, where the transmission configuration parameter includes: information used by a cell that uses the first unlicensed spectrum;
  • a parameter sending sub-module 4032 configured to send the transmission configuration parameter to the terminal, so that the terminal configures, by itself, data transmission on the first unlicensed spectrum
  • a first command sending submodule 4033 configured to send a first scheduling command to the terminal according to the transmission configuration parameter, where the first scheduling command includes: the base station instructing to use the first unlicensed spectrum and the terminal Data transmission;
  • the first transmission sub-module 4034 is configured to perform data transmission with the terminal on the first unlicensed spectrum according to the first scheduling command.
  • the transmission module 403 may further include:
  • a random access sub-module 4035 configured to: after the parameter sending sub-module sends the transmission configuration parameter to the terminal, allocate a random access resource to the terminal, so that the terminal maintains synchronization with the base station .
  • the first transmission submodule 4034 includes: a first data sending unit 40341, configured to send downlink data to the terminal on the first unlicensed spectrum according to the first scheduling command;
  • the first response receiving unit 40342 is configured to receive a first response message that is sent back by the terminal on the first unlicensed spectrum or the first licensed spectrum.
  • the first data sending unit 40341 is specifically configured to obtain downlink data to be sent from the multiplexing encapsulation entity, and store the downlink data to be sent to the hybrid automatic weight.
  • the transmitting module 403 further includes:
  • a second command sending submodule configured to send the second scheduling to the terminal after the first response receiving unit receives the first response message that is sent back by the terminal on the first unlicensed spectrum or the first authorized spectrum
  • the second scheduling command includes: the base station notifying the terminal that the base station will use the first authorized spectrum or the second authorized spectrum to retransmit downlink data that fails to be transmitted by using the first unlicensed spectrum;
  • a second transmission submodule configured to send, according to the second scheduling command, downlink data that fails to be transmitted by using the first unlicensed frequency on the first authorized spectrum or the second authorized spectrum;
  • the response receiving submodule is configured to receive a second response message that is sent back by the terminal on the first authorized spectrum or the second authorized spectrum.
  • the second transmission submodule is specifically configured to use the second scheduling command according to the second scheduling command.
  • the transmitting module 403 further includes:
  • a third command sending submodule configured to send the third scheduling to the terminal after the first response receiving unit receives the first response message that is sent back by the terminal on the first unlicensed spectrum or the first authorized spectrum
  • the third scheduling command includes: the base station indicating to the terminal that the base station is to use the first authorized spectrum or the second authorized spectrum to send downlink data; a third transmission submodule, configured to send downlink data to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command;
  • a third response receiving submodule configured to receive a third response message that is sent back by the terminal on the first authorized spectrum or the second authorized spectrum.
  • the downlink data sent by the base station to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command includes: corresponding to the HARQ process.
  • the downlink data obtained by using the first unlicensed frequency transmission obtained in the data cache is failed.
  • the base station 400 further includes:
  • the counting module 404 is configured to send, by using the second scheduling submodule, the second transmission submodule to send, according to the second scheduling submodule, the first authorized spectrum or the second authorized spectrum to the terminal according to the third scheduling command. After the downlink data of the first unlicensed spectrum transmission fails, the number of transmissions of the downlink data that fails to be transmitted by using the first unlicensed frequency is accumulated.
  • the first transmission submodule 4034 includes:
  • a first data receiving unit configured to receive uplink data that is sent by the terminal on the first unlicensed spectrum according to the first scheduling command
  • a fourth response sending unit configured to decode the received uplink data, and send a fourth response to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data Message.
  • the transmission module 403 further includes:
  • a fourth command sending submodule configured to: after the fourth response sending unit sends the fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data Sending a fourth scheduling command to the terminal, where the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum to retransmit the uplink data that fails to be transmitted by using the first unlicensed spectrum; a fourth transmission submodule, configured to receive, by the terminal, retransmission, on the first unlicensed spectrum, uplink data that fails to be transmitted by using the first unlicensed frequency according to the fourth scheduling command;
  • a fifth response sending submodule configured to decode the received uplink data, and send the fifth to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data.
  • Response message configured to decode the received uplink data, and send the fifth to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data.
  • the transmission module 403 further includes:
  • a fifth command sending submodule configured to: after the fourth response sending unit sends the fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data Sending a fifth scheduling command to the terminal, where the fifth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized spectrum retransmission to use the first unlicensed spectrum transmission failure Uplink data;
  • a fifth transmission submodule configured to receive, by the terminal, retransmission, on the first authorized spectrum or the second authorized spectrum, uplink data that fails to be transmitted by using the first unlicensed spectrum according to the fifth scheduling command;
  • a sixth response sending submodule configured to decode the received uplink data, and send a sixth response to the terminal on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received uplink data Message.
  • the transmission module 403 further includes:
  • a sixth command sending submodule configured to: after the fourth response sending unit sends the fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data Sending a sixth scheduling command to the terminal, where the sixth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized frequency to send uplink data; and the sixth transmission submodule, Receiving, by the terminal, the uplink data that fails to be transmitted by using the first unlicensed spectrum on the first authorized spectrum or the second authorized spectrum according to the sixth scheduling command;
  • the acquiring module 401 is specifically configured to monitor the usage status of the unlicensed spectrum and generate a monitoring result; or, instruct the terminal to monitor the usage status of the unlicensed spectrum, and receive the monitoring result reported by the terminal.
  • the transmitting configuration parameter further includes: competing for a competition parameter of a cell using the first unlicensed spectrum,
  • the contention parameter includes at least one of the following parameters: whether to monitor the available state of the first unlicensed spectrum before using the cell, the length of time to listen before using the cell, and using the cell. The length of time before the transmission is randomly backed after the first unlicensed spectrum is available, and the usage mode of the used cell is used.
  • the unlicensed spectrum determining module 402 is specifically configured to select an idle unlicensed spectrum from all the unlicensed spectrums that are monitored according to the monitoring result, and determine the idle The unlicensed spectrum is the first unlicensed spectrum.
  • the base station 400 further includes:
  • the message sending module 405 is configured to send, by the unlicensed spectrum determining module, the first unlicensed frequency according to the intercepting result, and send a claim message to the neighboring node, where the claimed message includes: the base station is adjacent to the neighboring node Declaring a usage status of the first unlicensed spectrum, the neighboring node is a terminal serving the neighboring base station of the base station and/or the neighboring base station; or sending a notification message to the terminal to indicate The terminal sends a claim message to the neighboring node according to the notification message, where the notification message includes the claim message, and the claim message includes: the base station claims the first unlicensed spectrum to the neighboring node In a usage state, the neighboring node is a terminal served by a neighboring base station of the base station and/or the neighboring base station.
  • the base station 400 further includes:
  • the negotiation module 406 is configured to: after the acquiring module obtains the monitoring result of monitoring the usage state of the unlicensed spectrum, and the neighboring node negotiates the usage state of the unlicensed spectrum that is monitored when the monitored unlicensed spectrum is used, Neighboring nodes are terminals served by neighboring base stations of the base station and/or the neighboring base stations.
  • the usage status of the unlicensed spectrum includes at least one of the following parameters: a usage period, a length of time, and a power strength of the unlicensed spectrum.
  • the transmitting configuration parameter further includes:
  • the base station After the base station performs data transmission with the terminal by using the first unlicensed spectrum, the base station is further configured to obtain a quality of service evaluation result according to the first unlicensed spectrum transmission data, and/or a channel of the first unlicensed spectrum. Quality assessment results.
  • the first command sending submodule is specifically configured to transmit the first scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the second command sending submodule is specifically configured to transmit the second scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the third command sending submodule is specifically configured to transmit the third scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the fourth command sending submodule is specifically configured to transmit the fourth scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the fifth command sending submodule is specifically configured to transmit the fifth scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum;
  • the sixth command sending submodule is specifically configured to transmit the sixth scheduling command on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum.
  • the base station can obtain the monitoring result of monitoring the usage state of the unlicensed spectrum, and then determine the first unlicensed spectrum according to the monitoring result, and the base station can be implemented by using the first unlicensed spectrum.
  • a terminal 500 may include: an obtaining module 501, an unlicensed spectrum determining module 502, and a transmitting module 503, where
  • the obtaining module 501 is configured to obtain a monitoring result of monitoring the usage state of the unlicensed spectrum;
  • the unlicensed spectrum determining module 502 is configured to determine, according to the monitoring result, a first unlicensed spectrum, where the first unlicensed spectrum determines an unlicensed spectrum to be used from the monitored unlicensed spectrum; and the transmitting module 503 uses And transmitting data to the base station by using the first unlicensed spectrum.
  • the transmission module 503 includes:
  • the parameter receiving sub-module 5031 is configured to receive a transmission configuration parameter that is sent by the base station, where the transmission configuration parameter includes: information that is used by the base station to use a cell that uses the first unlicensed spectrum;
  • a parameter configuration submodule 5032 configured to configure, according to the transmission configuration parameter, data transmission on the first unlicensed spectrum
  • the first command receiving submodule 5033 is configured to receive a first scheduling command sent by the base station, where the first scheduling command includes: the base station instructing to use the first unlicensed spectrum to perform data transmission with the terminal;
  • the first transmission submodule 5034 is configured to perform data transmission with the base station on the first unlicensed spectrum according to the first scheduling command.
  • the transmission module 503 further includes: a random access sub-module 5035, configured to: the parameter configuration sub-module is in accordance with the transmission configuration parameter After the data is transmitted on the first unlicensed spectrum, the method sends a random access request message to the base station, and adjusts a timing advance on the first unlicensed spectrum according to the random access response message sent by the base station. the amount.
  • the first transmission submodule 5034 includes:
  • the first data receiving unit 50341 is configured to receive downlink data that is sent by the base station on the first unlicensed spectrum according to the first scheduling command.
  • the first response sending unit 50342 is configured to decode the received downlink data, and send the first to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received downlink data. Response message.
  • the transmitting The transmission module 503 further includes:
  • a second command receiving submodule configured to: after the first response sending unit sends the first response message to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received downlink data Receiving, by the base station, a second scheduling command, where the second scheduling command includes: the base station indicating to the terminal that the base station is to use the first authorized spectrum or the second authorized spectrum to retransmit the first a downlink data that fails to transmit an unsolicited frequency message;
  • a second transmission submodule configured to receive, by the base station, the downlink that is sent to the terminal by using the first unlicensed spectrum transmission failure on the first authorized spectrum or the second authorized spectrum according to the second scheduling command Data
  • a second response sending submodule configured to decode the received downlink data, and send a second response to the base station on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received downlink data Message.
  • the transmitting module 503 further includes:
  • a third command receiving submodule configured to: after the first response sending unit sends the first response message to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received downlink data Receiving, by the base station, a third scheduling command, where the third scheduling command includes: the base station indicating to the terminal that the base station is to use the first authorized spectrum or the second authorized spectrum to send downlink data;
  • a third transmission submodule configured to receive, by the base station, downlink data to the terminal on the first authorized spectrum or the second authorized spectrum according to the third scheduling command;
  • a third response sending submodule configured to decode the received downlink data, and send a third response to the base station on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received downlink data Message.
  • the downlink data received by the second transmission submodule is downlink data that is sent by the base station according to the third scheduling command and that fails to use the first unlicensed spectrum transmission.
  • the first transmission submodule 5034 including:
  • a first data sending unit configured to send uplink data to the base station on the first unlicensed spectrum according to the first scheduling command
  • a fourth response receiving unit configured to receive a fourth response message sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum.
  • the first data sending unit is specifically configured to obtain uplink data to be sent from the multiplexing encapsulation entity, and store the uplink data to be sent to the hybrid automatic retransmission. Requesting, in the data cache corresponding to the HARQ process, sending the uplink data to be sent to the base station on the first unlicensed spectrum according to the first scheduling command.
  • the transmission module if the fourth response message is NACK, the transmission module
  • a fourth command receiving submodule configured to receive, by the fourth response receiving unit, a fourth response message that is sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum, and then receive the base station
  • the fourth scheduling command is sent, where the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum to retransmit the uplink data that fails to be transmitted by using the first unlicensed spectrum;
  • a fourth transmission submodule configured to retransmit the uplink data that fails the first unlicensed spectrum transmission to the base station according to the fourth scheduling command on the first unlicensed spectrum
  • a fifth response receiving submodule configured to receive, by the base station, a fifth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum.
  • the transmitting module 503 further includes:
  • a fifth command receiving submodule configured to receive, by the fourth response receiving unit, a fourth response message that is sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum, and then receive the base station
  • the fifth scheduling command is sent, where the fifth scheduling command includes: the base station instructing the terminal to use the first authorized spectrum or the second authorized spectrum to retransmit the uplink data that fails to be transmitted by using the first unlicensed spectrum;
  • a fifth transmission submodule configured to retransmit the uplink data that fails the first unlicensed spectrum transmission to the base station on the first authorized spectrum or the second authorized spectrum according to the fifth scheduling command;
  • a sixth response sending submodule configured to receive a sixth response message sent by the base station to the terminal on the first authorized spectrum or the second authorized spectrum.
  • the transmitting module 503 further includes:
  • a sixth command receiving submodule configured to receive, by the fourth response receiving unit, a fourth response message that is sent by the base station to the terminal on the first unlicensed spectrum or the first authorized spectrum, and then receive the base station
  • the sixth scheduling command is sent, where the sixth scheduling command includes: the base station instructing the terminal to send uplink data by using the first authorized spectrum or the second authorized spectrum;
  • a sixth transmission submodule configured to retransmit the uplink data that fails to be transmitted by using the first unlicensed frequency message to the base station according to the sixth scheduling command on the first authorized spectrum or the second authorized spectrum;
  • a seventh response receiving submodule configured to receive a seventh response message sent by the base station to the terminal on the first authorized spectrum or the second authorized spectrum.
  • the fourth transmission sub-module, the fifth transmission sub-module, and the sixth transmission sub-module use the uplink data of the first unlicensed spectrum transmission failure to be obtained by:
  • the terminal 500 further includes:
  • the counting module 504 is configured to: after the fourth transmission submodule, the fifth transmission submodule, and the sixth transmission submodule retransmit the uplink data that fails to use the first unlicensed spectrum transmission to the base station, use the first The number of transmissions of uplink data that failed to transmit unlicensed speech is accumulated.
  • the acquiring module 501 is specifically configured to: monitor, according to an indication of the base station, a usage state of an unlicensed spectrum, and generate a monitoring result; or, request, request, to the base station, The base station monitors the usage status of the unlicensed spectrum, and receives the monitoring result fed back by the base station.
  • the transmitting configuration parameter further includes: competing for a competition parameter of a cell that uses the first unlicensed spectrum,
  • the contention parameter includes at least one of the following parameters: whether to monitor the available state of the first unlicensed spectrum before using the cell, the length of time to listen before using the cell, and using the cell The length of time before the transmission is randomly backed after the first unlicensed spectrum is available, and the usage mode of the used cell is used.
  • the unlicensed spectrum determining module 502 is specifically configured to: determine, according to the monitoring result, an idle unlicensed spectrum from all unlicensed spectrums that are monitored, determine the idle.
  • the unlicensed spectrum is the first unlicensed spectrum.
  • the terminal 500 further includes: a message sending module 505, configured to determine, by the unlicensed spectrum determining module, the first non-authorization according to the intercepting result.
  • the claim message includes: the terminal declaring a usage state of the first unlicensed spectrum to the neighboring node, where the neighboring node is a phase of the terminal a neighboring base station and/or a terminal served by the neighboring base station; or, sending a notification message to the base station, to instruct the base station to send a announce message to the neighboring node according to the notification message, where the notification message includes the claim
  • the claim message includes: the terminal declaring a usage status of the first non-four-weight spectrum to the neighboring node, where the neighboring node is a neighboring base station and/or the phase of the terminal A terminal served by a neighboring base station.
  • the terminal 500 further includes:
  • the negotiation module 506 is configured to: after the acquiring module acquires the monitoring result of monitoring the usage state of the unlicensed spectrum, and the neighboring node negotiates the usage state of the unlicensed spectrum that is monitored when the monitored unlicensed spectrum is used, Neighboring nodes are terminals that serve neighboring base stations of the terminal and/or the neighboring base stations.
  • the usage status of the unlicensed spectrum includes at least one of the following parameters: a usage period, a length of time, and a power strength of the unlicensed spectrum.
  • the transmitting configuration parameter further includes: a quality of service evaluation parameter according to the first unlicensed spectrum transmission data, and/or a channel quality of the first unlicensed spectrum Evaluation parameter
  • the terminal After the terminal uses the first unlicensed spectrum to perform data transmission with the base station, the terminal is further configured to obtain a quality of service evaluation result according to the first unlicensed spectrum transmission data, and/or a channel of the first unlicensed spectrum. Quality assessment results.
  • the foregoing description of the embodiments of the present invention shows that the terminal can obtain the monitoring result of monitoring the usage state of the unlicensed spectrum, and then determine the first unlicensed spectrum according to the monitoring result, and the base station can be implemented by using the first unlicensed spectrum. Data transfer between terminals. Since the first unlicensed spectrum is an unlicensed spectrum determined from the intercepted unlicensed spectrum according to the interception result, data communication between the base station and the terminal is implemented using the first unlicensed spectrum that is determined to be usable.
  • the embodiment of the present invention further provides a computer storage medium, wherein the computer storage medium stores a program, and the program executes some or all of the steps described in the foregoing method embodiments.
  • the base station 600 includes:
  • the input device 601, the output device 602, the processor 603, and the memory 604 (wherein the number of processors 603 in the base station 600 may be one or more, and one processor in Fig. 6 is taken as an example).
  • the input device 601, the output device 602, the processor 603, and the memory 604 may be connected by a bus or other means, wherein FIG. 6 is exemplified by a bus connection.
  • the processor 603 is configured to perform the following steps:
  • Data transmission is performed with the terminal using the first unlicensed spectrum.
  • the processor 603 is specifically configured to: obtain the transmission configuration parameter of the first unlicensed spectrum, where the transmission configuration parameter includes: used to use the first unlicensed spectrum Information of the community;
  • the processor 603 is further configured to: after sending the transmission configuration parameter to the terminal, allocate a random access resource to the terminal, so that the terminal remains Synchronization with the base station.
  • the processor 603 is specifically configured to perform the following steps:
  • the processor 603 is specifically configured to: obtain downlink data to be sent from the multiplexing encapsulation entity, and store the downlink data to be sent to the hybrid automatic repeat request HARQ process. Corresponding data cache;
  • the processor 603 is further configured to perform the following steps:
  • the terminal After receiving the first response message that is sent back by the terminal on the first unlicensed spectrum or the first authorized spectrum, sending a second scheduling command to the terminal, where the second scheduling command includes: The terminal instructs the base station to retransmit the downlink data that fails to be transmitted by using the first unlicensed spectrum by using the first licensed spectrum or the second authorized spectrum;
  • the processor 603 is specifically configured to: perform, according to the second scheduling command, obtaining, from the data cache corresponding to the HARQ process, a downlink that fails to use the first unlicensed spectrum transmission.
  • the processor 603 is further configured to perform the following steps:
  • the terminal After receiving the first response message that is sent back by the terminal on the first unlicensed spectrum or the first authorized spectrum, sending a third scheduling command to the terminal, where the third scheduling command includes: The terminal instructs the base station to send downlink data by using the first authorized spectrum or the second authorized spectrum;
  • the processor 603 is specifically configured to: perform downlink data that is obtained by using the first unlicensed spectrum transmission from the data cache corresponding to the HARQ process.
  • the processor 603 is further configured to perform the following steps:
  • the number of transmissions of the downlink data in which the first unlicensed frequency transmission fails is accumulated.
  • the processor 603 is specifically configured to perform the following steps:
  • Decoding the received uplink data and sending a fourth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data.
  • the processor 603 is further configured to perform the following steps:
  • the fourth scheduling command is sent to the terminal, where the fourth scheduling command includes: the base station instructing the terminal to use the first unlicensed spectrum retransmission.
  • Decoding the received uplink data and sending a fifth response message to the terminal on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received uplink data.
  • the processor 603 is further configured to perform the following steps:
  • sending a fifth scheduling command to the terminal includes: the base station instructing the terminal to retransmit the uplink data that fails to be transmitted by using the first unlicensed spectrum by using the first authorized spectrum or the second authorized spectrum;
  • Decoding the received uplink data and sending a sixth response message to the terminal on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received uplink data.
  • the processor 603 is further configured to perform the following steps:
  • sending a sixth scheduling command to the terminal includes: the base station instructing the terminal to send uplink data by using the first authorized spectrum or the second authorized spectrum;
  • Decoding the received uplink data and sending a seventh response message to the terminal on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received uplink data.
  • the processor 603 is specifically configured to: perform monitoring on a usage state of the unlicensed spectrum and generate a monitoring result; Or, instructing the terminal to monitor the usage status of the unlicensed spectrum, and receiving the monitoring result reported by the terminal.
  • the transmission configuration parameter stored by the memory 604 further includes: competing for a competition parameter of a cell using the first unlicensed spectrum,
  • the contention parameter includes at least one of the following parameters: whether to monitor the available state of the first unlicensed spectrum before using the cell, the length of time to listen before using the cell, and using the cell. The length of time before the transmission is randomly backed after the first unlicensed spectrum is available, and the usage mode of the used cell is used.
  • the processor 603 is specifically configured to: perform: determining, according to the monitoring result, an idle unlicensed spectrum from all unlicensed spectrums that are monitored, determining the idle unauthorized The spectrum is the first unlicensed spectrum.
  • the processor 603 is further configured to perform the following steps:
  • the neighboring node After determining the first unlicensed spectrum according to the interception result, sending a claim message to the neighboring node, where the claim message includes: the base station declaring the use status of the first unlicensed spectrum to the neighboring node, a neighboring node is a terminal serving the neighboring base station of the base station and/or the neighboring base station; or
  • the node declares a usage status of the first unlicensed spectrum, and the neighboring node is a terminal served by a neighboring base station of the base station and/or the neighboring base station.
  • the processor 603 is further configured to perform the following steps:
  • the usage status of the unlicensed spectrum stored by the memory 604 includes at least one of the following parameters: a usage period, a length of time, and a power strength of the unlicensed spectrum.
  • the transmission configuration parameter stored by the memory 604 further includes: a quality of service evaluation parameter according to the first unlicensed spectrum transmission data, and/or the first Channel quality assessment parameters for unlicensed spectrum;
  • the processor 603 is further configured to perform the following steps:
  • the first scheduling command, the second scheduling command, the third scheduling command, the fourth scheduling command, the fifth scheduling command, and the storing The sixth scheduling command is transmitted on the first unlicensed spectrum, or the first authorized spectrum, or the second authorized spectrum.
  • the base station can obtain the monitoring result of monitoring the usage state of the unlicensed spectrum, and then determine the first unlicensed spectrum according to the monitoring result, and the base station can be implemented by using the first unlicensed spectrum.
  • the above embodiment describes the base station side of the method of using the unlicensed spectrum implemented in the present invention, and next, the terminal side of the method of using the unlicensed spectrum implemented in the present invention will be described.
  • the terminal 700 includes: an input device 701, an output device 702, a processor 703, and a memory 704 (wherein the number of processors 703 in the terminal 700)
  • an input device 701, the output device 702, the processor 703, and the memory 704 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.
  • the processor 703 is configured to perform the following steps:
  • Data transmission is performed with the base station using the first unlicensed spectrum.
  • the processor 703 is specifically configured to: receive a transmission configuration parameter sent by the base station, where the transmission configuration parameter includes: Determining information for a cell using the first unlicensed spectrum;
  • the base station And receiving, by the base station, a first scheduling command, where the first scheduling command includes: the base station instructing to use the first unlicensed spectrum to perform data transmission with the terminal;
  • the processor 703 is further configured to: perform, after configuring, transmitting data on the first unlicensed spectrum according to the transmission configuration parameter, sending a random connection to the base station And entering a request message, and adjusting a timing advance on the first unlicensed spectrum according to the random access response message sent by the base station.
  • the processor 703 is specifically configured to perform the following steps:
  • Decoding the received downlink data and sending a first response message to the base station on the first unlicensed spectrum or the first authorized spectrum according to the decoding situation of the received downlink data.
  • the processor 703 is further configured to perform the following steps:
  • the scheduling command includes: the base station indicating to the terminal that the base station will use the first authorized spectrum or the second authorized spectrum to retransmit downlink data that fails to be transmitted by using the first unlicensed spectrum;
  • the processor 703 is specifically configured to perform the following steps:
  • receiving a third scheduling command sent by the base station includes: the base station indicating to the terminal that the base station is to use the first authorized spectrum or the second authorized spectrum to send downlink data;
  • Decoding the received downlink data and sending a third response message to the base station on the first authorized spectrum or the second authorized spectrum according to the decoding situation of the received downlink data.
  • the downlink data stored by the memory 704 is downlink data that is sent by the base station according to the third scheduling command and that fails to be transmitted by using the first unlicensed frequency.
  • the processor 703 is specifically configured to perform the following steps:
  • the processor 703 is specifically configured to: obtain uplink data to be sent from the multiplexing encapsulation entity, and store the uplink data to be sent to the hybrid automatic repeat request HARQ process. Corresponding data cache;
  • the processor 703 is further configured to perform the following steps:
  • receiving a fourth scheduling command sent by the base station includes: Determining, by the base station, that the terminal uses the first unlicensed spectrum retransmission to use the first non- Uplink data that fails to authorize spectrum transmission;
  • the processor 703 is further configured to perform the following steps:
  • receiving a fifth scheduling command sent by the base station includes: Determining, by the base station, that the terminal uses the first authorized spectrum or the second authorized spectrum to retransmit the uplink data that fails to be transmitted by using the first unlicensed spectrum;
  • the processor 703 is further configured to perform the following steps:
  • receiving a sixth scheduling command sent by the base station includes: Determining, by the base station, that the terminal sends uplink data by using the first authorized spectrum or the second authorized frequency;
  • the processor 703 is specifically configured to obtain uplink data that fails to be transmitted by using the first unlicensed spectrum by:
  • the processor 703 is further configured to perform the following steps:
  • the terminal After retransmitting the uplink data that fails the first unlicensed spectrum transmission to the base station, the terminal accumulates the number of transmissions of uplink data that fails to be transmitted using the first unlicensed frequency.
  • the processor 703 is specifically configured to: perform monitoring on the usage status of the unlicensed spectrum according to the indication of the base station, and generate a monitoring result; or, requesting, requesting, The base station monitors the usage status of the unlicensed spectrum, and receives the monitoring result fed back by the base station.
  • the transmission configuration parameter stored by the memory 704 further includes: competing for a competition parameter of a cell using the first unlicensed spectrum,
  • the contention parameter includes at least one of the following parameters: whether to monitor the available state of the first unlicensed spectrum before using the cell, the length of time to listen before using the cell, and using the cell. The length of time before the transmission is randomly backed after the first unlicensed spectrum is available, and the usage mode of the used cell is used.
  • the processor 703 is specifically configured to: perform: determining, according to the monitoring result, an idle unlicensed spectrum from all unlicensed spectrums that are monitored, determining the idle unlicensed spectrum Is the first unlicensed spectrum.
  • the processor 703 is further configured to perform the following steps:
  • the neighboring node After determining the first unlicensed spectrum according to the intercepting result, sending a claim message to the neighboring node, where the claim message includes: the terminal declaring a usage status of the first unlicensed spectrum to the neighboring node,
  • the neighboring node is a terminal that serves the neighboring base station of the terminal and/or the neighboring base station; or
  • the node declares a state of use of the first unlicensed spectrum, and the neighboring node is a terminal served by a neighboring base station of the terminal and/or the neighboring base station.
  • the processor 703 is further configured to perform the following steps:
  • the neighboring A node is a terminal served by a neighboring base station of the terminal and/or the neighboring base station.
  • the usage status of the unlicensed spectrum stored by the memory 704 includes at least one of the following parameters: a usage period, a length of time, and a power strength of the unlicensed spectrum.
  • the transmission configuration parameter stored by the memory 704 further includes: a quality of service evaluation parameter according to the first unlicensed spectrum transmission data, and/or a channel of the first unlicensed spectrum Quality assessment parameters;
  • the processor 703 is further configured to: after obtaining data transmission with the base station by using the first unlicensed spectrum, obtain a quality of service evaluation result according to the first unlicensed spectrum transmission data, and/or the first non- The channel quality assessment result of the licensed spectrum.
  • the terminal can obtain the monitoring result of monitoring the usage state of the unlicensed spectrum, and then determine the first unlicensed spectrum according to the monitoring result, and the base station can be implemented by using the first unlicensed spectrum.
  • Data transfer between terminals Since the first unlicensed spectrum is an unlicensed spectrum determined from the intercepted unlicensed spectrum based on the interception result, data communication between the base station and the terminal is implemented using the first unlicensed spectrum that is determined to be usable.
  • the device embodiments described above are merely illustrative, and the components may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment. Further, in the drawings of the apparatus embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection therebetween, and specifically, one or more communication buses or signal lines can be realized. Those of ordinary skill in the art can understand and implement without any creative effort.
  • the present invention can be implemented by means of software plus necessary general hardware, and of course, through dedicated hardware, including an application specific integrated circuit, a dedicated CPU, a dedicated memory, Special components and so on.
  • functions performed by computer programs can be easily implemented with the corresponding hardware.
  • the specific hardware structure used to implement the same function can be various, such as analog circuits, digital circuits, or dedicated circuits. Circuits, etc.
  • software program implementation is a better implementation in more cases. Based on such understanding, the technical solution of the present invention contributes essentially or to the prior art.
  • Portions may be embodied in the form of a software product stored in a readable storage medium, such as a computer floppy disk, a USB flash drive, a removable hard disk, a read-only memory (ROM), a random access device. a memory (RAM, Random Access Memory), a magnetic disk or an optical disk, etc., including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the embodiments of the present invention. method.
  • a computer device which may be a personal computer, a server, or a network device, etc.

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Abstract

L'invention concerne un procédé d'utilisation de spectre de fréquences non autorisé, ainsi qu'une station de base et un terminal. Le procédé d'utilisation de spectre de fréquences non autorisé comprend les opérations suivantes : une station de base obtient des résultats de surveillance des conditions d'utilisation d'un spectre de fréquences non autorisé ; selon les résultats de surveillance, la station de base détermine un premier spectre de fréquences non autorisé, le premier spectre de fréquences non autorisé étant un spectre de fréquences non autorisé à utiliser déterminé à partir du spectre de fréquences non autorisé surveillé ; et la station de base utilise le premier spectre de fréquences non autorisé pour une transmission de données avec un terminal.
PCT/CN2014/074592 2014-04-02 2014-04-02 Procédé d'utilisation de spectre de fréquences non autorisé, et station de base et terminal WO2015149294A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
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CN105611637A (zh) * 2016-02-06 2016-05-25 北京佰才邦技术有限公司 信道发送状态的指示方法和终端
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