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WO2017028032A1 - 基站在授权频谱辅助接入小区中的数据传输方法及基站 - Google Patents

基站在授权频谱辅助接入小区中的数据传输方法及基站 Download PDF

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Publication number
WO2017028032A1
WO2017028032A1 PCT/CN2015/087036 CN2015087036W WO2017028032A1 WO 2017028032 A1 WO2017028032 A1 WO 2017028032A1 CN 2015087036 W CN2015087036 W CN 2015087036W WO 2017028032 A1 WO2017028032 A1 WO 2017028032A1
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WIPO (PCT)
Prior art keywords
control layer
access control
physical layer
transmission
listening
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PCT/CN2015/087036
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English (en)
French (fr)
Inventor
黄曲芳
张健
郭轶
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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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580063218.4A priority Critical patent/CN107079520A/zh
Priority to PCT/CN2015/087036 priority patent/WO2017028032A1/zh
Publication of WO2017028032A1 publication Critical patent/WO2017028032A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to the field, and in particular, to a data transmission method and a base station of a base station in a licensed spectrum assisted access cell.
  • the 3rd Generation Partnership Project (3GPP) has determined to use the licensed spectrum-assisted access (LAA) cell to provide wireless communication, so that the base station can be used in ordinary
  • the cell performs data transmission, and can also perform data transmission in the licensed spectrum auxiliary access cell.
  • the common cell refers to a cell that uses the cellular mobile communication standard for data transmission in a predetermined cellular mobile communication frequency band
  • the licensed spectrum auxiliary access cell refers to a cellular mobile in a Wireless Fidelity (WiFi) frequency band.
  • WiFi Wireless Fidelity
  • a cell in which the communication standard performs data transmission, and the cellular mobile communication band may be a Long Term Evolution (LTE) band. Since the base station can use the WiFi frequency band for transmission in the LAA cell and the LTE frequency band for data transmission in the normal cell, the data transmission capability of the base station can be greatly improved.
  • LTE Long Term Evolution
  • WiFi device When an existing WiFi device uses the WiFi band for data transmission, it first needs to compete for wireless resources.
  • the WiFi device can only transmit data after competing for wireless resources. In this way, data transmission of multiple WiFi devices can be avoided.
  • the base station transmits data through the licensed spectrum to access the cell, the WiFi band is also required. Therefore, in order to avoid the data transmission conflict between the base station and the WiFi device, the base station and the WiFi device can perform normal data transmission, and the base station is authorized to assist the spectrum.
  • the access cell uses the WiFi band for data transmission, other WiFi devices or base stations are also required to compete for radio resources, and data transmission is performed after competing for the radio resources.
  • a new data transmission method is needed to enable a base station to compete with a WiFi device for wireless resources in a licensed spectrum assisted access cell, and perform data transmission after competing for a wireless resource.
  • the embodiment of the present invention provides a data transmission method and a base station of a base station in a licensed spectrum assisted access cell, which can compete with a WiFi device for wireless resources in a licensed spectrum assisted access cell, and compete for radio resources. Data transfer after the source.
  • the present application provides a method for transmitting a base station in a licensed spectrum assisted access cell, where the base station includes a medium access control layer and a physical layer, and the method includes: the medium access control layer The physical layer sends a first start indication, where the first start indication is used to instruct the physical layer to initiate pre-transmission listening; the media access control layer sends a first protocol data unit to the physical layer, where the a protocol data unit is configured by the media access control layer according to the to-be-sent data in the radio link control layer; the physical layer starts pre-transmission listening according to the first start indication, and after the interception is successful before sending Transmitting the first protocol data unit by granting a spectrum assisted access cell.
  • the that the media access control layer sends the first protocol data unit to the physical layer includes: sending the first start to the physical layer Before indicating, the medium access control layer sends the first protocol data unit to the physical layer.
  • the that the media access control layer sends the first protocol data unit to the physical layer includes: if the pre-transmission is successful, the media access The control layer sends the first protocol data unit to the physical layer.
  • the that the media access control layer sends the first start indication to the physical layer includes: the media access control The layer sends a first start indication that carries the first pre-transmission listening parameter to the physical layer, where the first pre-transmission listening parameter is determined by the quality of service of the data to be sent included in the first protocol data unit, The first arbitrage listening interval and the first period number window are included; or the medium access control layer sends a first start indication carrying the first parameter identifier to the physical layer, where the first parameter identifier is used to indicate the physics
  • the layer uses the first pre-transmission listening parameter in the candidate pre-transmission listening parameter to perform pre-transmission listening.
  • the sending, by the medium access control layer, the first protocol data unit to the physical layer includes: after receiving the first success notification sent by the physical layer, the media access control layer sends the first protocol data to the physical layer a unit, wherein the first success notification is sent by the physical layer after the first pre-transmission listening parameter and the first interception data are determined to be successful before the sending, the first listening data is The physical layer is obtained by listening before sending.
  • the media access control layer sends the first to the physical layer if the pre-transmission is successful
  • the protocol data unit includes: after transmitting the first initiation indication to the physical layer, the media access control layer receives the The first interception data reported by the physical layer, the first interception data is obtained by the physical layer by sending a pre-transmission; the media access control layer is configured according to the first pre-transmission listening parameter and the first The interception data determines whether the pre-transmission listening is successful; after determining that the pre-transmission is successful, the media access control layer sends the first protocol data unit to the control layer.
  • the media access control layer determines, according to the first pre-transmission listening parameter and the first interception data, Whether the pre-listion is successful, the media access control layer determines, according to the first interception data, whether the signal strength of the air interface of the base station is lower than a predetermined threshold, when the period counter is decremented from the first initial value to 0.
  • the first initial value is a random value selected by the medium access control layer from the first cycle number window; when the signal strength of the air interface is lower than a predetermined threshold, the media access control layer Determining whether the duration of the signal strength of the air interface is less than a predetermined threshold has exceeded the first arbitration listening interval; if the signal strength of the air interface is lower than a predetermined threshold and the duration exceeds the first arbitration listening interval, then determining The interception is successful before the transmission; if the signal strength of the air interface is lower than the predetermined threshold but the duration does not exceed the first arbitration listening interval, it is determined that the pre-transmission hearing fails.
  • the medium access control layer sends the physical layer to the physical layer After the protocol data unit, the media access control layer sends a first transmission indication to the physical layer, where the first transmission indication is used to indicate the physical layer sending station.
  • the first protocol data unit is described.
  • the method further includes: if the pre-transmission listening fails, The medium access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • the method further includes: before the detection succeeds before sending, The data included in the first protocol data unit is sent by the base station by using a common cell, and data to be sent still exists in the radio link control layer, and the media access control layer sends a second start indication to the physical layer.
  • the second activation indication is used to instruct the physical layer to start pre-transmission listening again; the media access control layer sends a second protocol data unit to the physical layer, where the second protocol data unit is The media access control layer is configured according to the to-be-transmitted data in the radio link control layer; the physical layer starts the pre-transmission listening again according to the second activation indication, and passes the licensed spectrum after the detection is successful before the transmission.
  • the secondary access cell transmits the second protocol data unit.
  • the that the media access control layer sends the second protocol data unit to the physical layer includes: the media access Control layer Receiving the second interception data reported by the physical layer, where the second interception data is obtained by the physical layer by sending the pre-transmission; the media access control layer is configured according to the second pre-transmission parameter and the second The interception data determines whether the pre-transmission listening is successful, and the second pre-transmission listening parameter is determined by the quality of service of the data to be transmitted included in the second protocol data unit, including the second arbitration listening interval and the second period.
  • the number window after the monitoring is successful before sending, the medium access control layer sends the second protocol data unit to the control layer.
  • the media access control layer determines, according to the second pre-transmission listening parameter and the second interception data Whether the sounding of the air interface is lower than a predetermined threshold according to the second interception data, the media access control layer determines whether the signal strength of the air interface is lower than a predetermined threshold according to the second interception data, where the media access control layer determines that the signal strength of the air interface is lower than a predetermined threshold.
  • the target value is a difference between the second count value and the decrement value
  • the second initial value is a random value selected by the medium access control layer from the second period number window
  • the decrement value is And the number of cycles that the media access control layer sends the first start indication to the physical layer to the data included in the first protocol data unit to be transmitted by the base station through the ordinary cell; when the signal strength of the air interface is lower than a predetermined threshold
  • the media access control layer detects whether the duration of the signal strength of the air interface is lower than a predetermined threshold exceeds a second arbitration listening interval; if the signal strength of the air interface is lower than a predetermined threshold If the duration exceeds the second arbitration listening interval, it is determined that the interception is successful before the transmission; if the signal strength of the air interface is lower than the predetermined threshold but the duration does not exceed the second arbitration listening interval, then the pre-transmission interception is determined. failure.
  • the first protocol data unit is configured by the media access control layer before sending a first start indication to a physical layer; or The first protocol data unit is constructed by the medium access control layer after transmitting the first initiation indication to the physical layer.
  • the first protocol data unit is configured by the media access control layer to be successfully detected before being sent.
  • the present application further provides a base station, including a radio link control layer, a medium access control layer, and a physical layer, where the medium access control layer is configured to send a first start indication to the physical layer.
  • the first initiation indication is used to instruct the physical layer to initiate pre-transmission listening;
  • the media access control layer is further configured to send a first protocol data unit to the physical layer, where the first protocol data unit is
  • the medium access control layer is configured according to the to-be-sent data in the radio link control layer, and the physical layer is configured to start pre-transmission listening according to the first start indication, and pass the pre-sentence detection after the transmission succeeds.
  • Authorizing the spectrum assisted access cell to send the first protocol data unit.
  • the media access control layer And for transmitting the first protocol data unit to the physical layer before transmitting the first initiation indication to the physical layer.
  • the media access control layer is further configured to send the first protocol data unit to the physical layer when the monitoring is successful before the sending .
  • the media access control layer is further configured to send, to the physical layer, a first pre-transmission listening parameter.
  • a first start indication the first pre-transmission listening parameter is determined by a quality of service of the data to be transmitted included in the first protocol data unit, including a first arbitration listening interval and a first cycle number window; or And sending, to the physical layer, a first start indication that carries the first parameter identifier, where the first parameter identifier is used to instruct the physical layer to use the first pre-transmission listening parameter in the candidate pre-transmission listening parameter. Listen before sending.
  • the media access control layer is further configured to: after receiving the first success notification sent by the physical layer Transmitting, to the physical layer, a first protocol data unit, where the first success notification is determined by the physical layer after the first pre-transmission listening parameter and the first interception data are determined to be sent before being sent. Sending, the first interception data is obtained by the physical layer by listening before sending.
  • the medium access control layer is further configured to: after sending the first start indication to the physical layer And receiving, by the physical layer, the first interception data, where the first interception data is obtained by the physical layer by sending the pre-transmission; and determining, according to the first pre-transmission listening parameter and the first interception data. Whether the pre-transmission listening is successful; after determining that the pre-transmission listening is successful, sending the first protocol data unit to the control layer.
  • the media access control layer is further configured to: when the period counter is decremented from the first initial value to 0, Determining, by the first interception data, whether a signal strength of the air interface of the base station is lower than a predetermined threshold, where the first initial value is a random value selected by the media access control layer from the first cycle number window
  • the signal strength of the air interface is lower than a predetermined threshold, detecting whether the duration of the signal strength of the air interface is lower than a predetermined threshold exceeds a first arbitration listening interval; if the signal strength of the air interface is lower than a predetermined threshold If the duration exceeds the first arbitration listening interval, it is determined that the interception is successful before the transmission; if the signal strength of the air interface is lower than the predetermined threshold but the duration does not exceed the first arbitration listening interval, then the pre-transmission interception is determined. failure.
  • the media access control layer is further used to Layer sends the first pass And transmitting, the first transmission indication is used to instruct the physical layer to send the first protocol data unit.
  • the media access control layer is further configured to detect before sending After the failure is heard, the data to be transmitted included in the first protocol data unit is saved to the radio link control layer.
  • the media access control layer is further used in the foregoing When the data included in a protocol data unit is sent by the base station through the normal cell, and the data to be sent still exists in the radio link control layer, a second start indication is sent to the physical layer, where the second start indication is used.
  • the media access control layer is further configured to send a second protocol data unit to the physical layer, where the second protocol data unit is used by the media access control layer
  • the physical layer is further configured to restart the pre-transmission interception according to the second activation indication, and after the detection is successful before the transmission, the spectrum assistance is authorized.
  • the access cell sends the second protocol data unit.
  • the media access control layer is further configured to: when the period counter is decremented from the target value to 0, according to the The second interception data determines whether the signal strength of the air interface is lower than a predetermined threshold, wherein the target value is a difference between the second count value and the decrement value, and the second initial value is the media access control layer.
  • the decremented value is that the medium access control layer sends a first start indication to the physical layer to the data included in the first protocol data unit is passed by the base station The number of cycles elapsed by the normal cell transmission; when the signal strength of the air interface is lower than a predetermined threshold, detecting whether the duration of the signal strength of the air interface is lower than a predetermined threshold exceeds a second arbitration listening interval; If the signal strength of the air interface is lower than the predetermined threshold and the duration exceeds the second arbitration listening interval, it is determined that the interception is successful before the transmission; if the signal strength of the air interface is lower than the predetermined threshold but continues If the second arbitration listening interval is not exceeded, it is determined that the interception before the transmission fails.
  • the media access control layer is further configured to construct the first protocol data unit before sending the first start indication to the physical layer; or And for constructing the first protocol data unit after transmitting the first boot indication to the physical layer.
  • the media access control layer is further configured to construct the first protocol after the monitoring is successful before sending Data unit.
  • the medium access control layer sends a first start indication to the physical layer, where The first startup indication is used to instruct the physical layer to initiate pre-transmission listening; the media access control layer sends a first protocol data unit to the physical layer, where the first protocol data unit is accessed by the media
  • the control layer is configured according to the to-be-transmitted data in the radio link control layer; the physical layer starts pre-transmission listening according to the first activation indication, and after the transmission is successful, the authorized spectrum accesses the cell to send the station.
  • the first protocol data unit is described. With the base station and the data transmission method provided by the application, the base station may compete with the WiFi device for the wireless resource in the licensed spectrum assisted access cell, and perform data transmission after competing for the wireless resource.
  • FIG. 1 is a schematic flowchart of a method for transmitting a base station in a licensed spectrum assisted access cell according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention
  • FIG. 3 is a schematic flowchart of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention
  • FIG. 4 is a schematic flowchart diagram of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention
  • FIG. 5 is a schematic flowchart of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 6 is a schematic flowchart of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 7 is a schematic flowchart diagram of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 8 is a schematic flowchart of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 9 is a schematic flowchart of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 10 is a schematic flowchart of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 11 is a schematic flowchart diagram of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 12 is a schematic flowchart of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 13 is a schematic flowchart diagram of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 14 is a schematic flowchart diagram of another embodiment of a method for transmitting a base station in a licensed spectrum assisted access cell according to the present invention.
  • FIG. 15 is a schematic structural diagram of an embodiment of a base station according to the present invention.
  • whether the pre-transmission listening is successful refers to whether the network device listens to the radio resource before receiving the transmission.
  • the successful listening before sending means that the network competes to the wireless resource by sending the pre-sent
  • the pre-sending listening failure means that the network device fails to compete for the radio resource by sending the pre-sent.
  • the base station may include a Radio Link Control (RLC) layer, a Medium Access Control (MAC) layer, and a physical layer ( The physical layer (referred to as PHY for short), the base station can access the common cell in an ordinary manner, or access the authorized spectrum to access the cell through the licensed spectrum assisted access mode.
  • RLC Radio Link Control
  • MAC Medium Access Control
  • PHY Physical layer
  • the Protocol Data Unit (PDU) generated by the MAC layer is also commonly referred to as a MAC PDU.
  • the physical layer sends the protocol data unit to the physical layer to use the licensed spectrum to access the radio resources of the cell, and sends the protocol data unit through the air interface.
  • FIG. 1 is a schematic flowchart diagram of an embodiment of a data transmission method of a base station in an access granted spectrum assisted access cell according to the present invention. The method described in this embodiment can be performed by a medium access control layer in a base station.
  • Step 101 The media access control layer sends a first start indication to the physical layer, where the first start indication is used to instruct the physical layer to start pre-transmission listening.
  • the medium access control layer may pre-select the first pre-transmission listening parameter, so as to determine whether the pre-transmission listening is successful according to the first pre-transmission listening parameter.
  • the first pre-transmission listening parameter is determined by the quality of service of the data to be transmitted included in the first protocol data unit, and may include a first arbitration inter-frame spacing (AIFS) and a first period. Parameters such as the number of windows can also include the maximum time that can be used for data transmission after successful listening before sending. The higher the priority of the service quality of the data to be sent, the shorter the first arbitration listening interval, the smaller the first cycle number window, and the longer the maximum time that can be used for data transmission.
  • AIFS inter-frame spacing
  • the first starting indication may carry the first pre-sending listening parameter or the first parameter identifier.
  • the first parameter identifier is used to instruct the physical layer to use the first pre-transmission listening parameter in the pre-transmission listening parameter to perform pre-transmission listening.
  • Step 102 The media access control layer sends a first protocol data unit to the physical layer, where the first protocol data unit is configured by the media access control layer according to data to be sent in a radio link control layer.
  • the medium access control layer may send the first protocol data unit to the physical layer before sending the first initiation indication to the physical layer.
  • the medium access control layer may also send the first protocol data unit to the physical layer after sending the first start indication to the physical layer.
  • the medium access control layer may send the first protocol data unit to the physical layer after the first start indication is sent to the physical layer, and the pre-transmission listens successfully.
  • the timing at which the medium access control layer sends the first protocol data unit to the physical layer may be preset as needed. The application does not limit the timing at which the medium access control layer sends the first protocol data unit and the medium access control layer to the physical layer to send the first start indication to the physical layer.
  • Whether the interception before the sending is successful may be determined by the media access control layer according to the first interception data and the first pre-transmission listening parameter; or the physical layer may also listen according to the first interception data and the first pre-transmission data.
  • Parameter determination wherein the first interception data is obtained by the physical layer by pre-transmission interception, and the general production is information for reacting the intensity of the air interface signal.
  • the media access control layer may determine whether the pre-transmission listening is successful according to the first intercepting data and the first pre-transmitting listening parameter as follows:
  • the cycle counter is decremented from the first initial value to 0, the signal strength of the air interface is lower than a predetermined threshold, or when the cycle counter is decremented from the first initial value to 0, although the signal strength of the air interface is lower than a predetermined threshold, If the duration of the signal strength of the air interface below the predetermined threshold does not exceed the first arbitration listening interval, it may be determined that the transmission before the transmission fails.
  • the manner in which the physical layer determines whether the pre-transmission listening is successful according to the first listening data and the first pre-transmission listening parameter is similar to the media access control layer parameter determining whether the pre-transmission listening is successful, and is not described herein again.
  • Step 103 The physical layer starts pre-transmission listening according to the first initiation indication, and sends the first protocol data unit by granting a spectrum assisted access cell after the detection is successful before sending.
  • the physical layer may send a first success notification to the media access control layer after the interception is successful. After receiving the first success notification, the media access control layer may determine that the pre-transmission listening is successful. After receiving the first success notification, the medium access control layer may send the first protocol data unit to the physical layer. After receiving the first protocol data unit, the physical layer sends the first protocol data unit by granting access to the cell by the authorized spectrum.
  • the physical layer may also send a first failure notification to the media intervention control layer. After receiving the first failure notification, the media access control layer may determine that the pre-transmission listening failure.
  • the medium access control layer may further send a first transmission indication to the physical layer, where the first transmission indication is used to instruct the physical layer to send the first protocol data unit. After receiving the first transmission indication, the physical layer sends the first protocol data unit by granting access to the cell by the authorized spectrum.
  • the media access control layer sends the first protocol data unit to the physical layer before the transmission is successful, and the physical layer determines whether the pre-transmission listening is successful, the physical layer may directly directly listen after the transmission.
  • the first protocol data unit is sent through the air interface without waiting for the transmission indication of the medium access control layer.
  • the pre-transmission listening failure may occur. If the pre-transmission listening fails, the media access control layer further needs to save the to-be-sent data included in the first protocol data unit to the location.
  • the radio link control layer is described to facilitate subsequent transmission.
  • the physical layer may send a first failure notification to the medium access control layer after the transmission fails to be detected, and the media access control layer receives the first one sent by the physical layer.
  • the failure notification may determine that the pre-transmission listening fails, and then the first protocol data unit may be unpacked, and the to-be-sent data included in the first protocol data unit is saved to the radio link control layer.
  • the first protocol data unit may be configured by the medium access control layer before sending a first start indication to the physical layer; or may be performed by the medium access control layer to the physical After the layer sends the first start indication, the first protocol data unit may also be configured by the medium access control layer when the medium access control layer sends the first start indication after the transmission is successful. Constructed after successful listening before sending.
  • the medium access control layer sends a first start indication to the physical layer, where the first start indication is used to instruct the physical layer to start pre-transmission listening; the media access control layer Transmitting, to the physical layer, a first protocol data unit, where the first protocol data unit is configured by the media access control layer according to data to be sent in a radio link control layer; the physical layer is activated according to the first Instructing to start pre-transmission listening, and transmitting the first protocol data unit by granting a spectrum assisted access cell after the monitoring is successful before sending.
  • the base station can perform radio resource competition by transmitting the pre-transmission, and perform data transmission after the detection is successful before the transmission. Since the WiFi device also performs radio resource competition by transmitting the pre-transmission, the base station is used. The wireless resources may be competed with the WiFi device in the licensed spectrum assisted access cell.
  • the base station Since the base station transmits data through the authorized spectrum assisted access cell, the base station can also send data through the ordinary cell. Therefore, before the transmission is successful, the data contained in the first protocol data unit may be sent by the base station through the normal cell. Since there may be other data to be transmitted in addition to the data included in the first protocol data unit in the radio link control layer, as shown in FIG. 2, if the data included in the first protocol data unit is used by the base station And sending, by the normal cell, the data to be sent still exists in the radio link control layer, and then after step 102, the method may further include:
  • Step 104 Before the monitoring is successful before the sending, the data included in the first protocol data unit is sent by the base station through the common cell, and the data to be sent still exists in the radio link control layer, the media access The control layer sends a second start indication to the physical layer, where the second start indication is used to instruct the physical layer to start pre-transmission listening again.
  • the medium access control layer may pre-select the second pre-transmission listening parameter, so as to determine to send according to the second pre-transmission listening parameter. Whether the pre-listening is successful.
  • the second pre-transmission listening parameter is determined by the quality of service of the data to be transmitted included in the second protocol data unit, and may include a second arbitration listening interval arbitration listening interval and a second period number window, etc.
  • the parameters required for the success of the interception may also include the maximum time that can be used for data transmission after successful listening before sending.
  • the second initiating indication may carry the second pre-sending listening parameter or the second parameter identifier.
  • the second parameter identifier is used to instruct the physical layer to use the second pre-transmission listening parameter in the pre-transmission listening parameter to perform pre-transmission listening.
  • Step 105 The medium access control layer sends a second protocol data unit to the physical layer, where the second protocol data unit is used by the media access control layer according to the to-be-sent data in the radio link control layer. structure.
  • the medium access control layer may also send the second start indication to the physical layer.
  • the physical layer sends a second protocol data unit.
  • the medium access control layer may send the second protocol data unit to the physical layer before the detection is successful before sending, or may send the second protocol to the physical layer after the detection is successful before sending. Data unit.
  • Whether the interception before the sending is successful may be determined by the media access control layer according to the second interception data and the second pre-transmission listening parameter; or the physical layer may also listen according to the second interception data and the second pre-transmission Parameter determination, wherein the second interception data is obtained by the physical layer by pre-transmission listening.
  • the medium access control layer determines, according to the second interception data and the second pre-transmission listening parameter, whether the pre-transmission listening mode is successful, and the media access control layer may determine, according to the first interception data and the first pre-transmission listening parameter, The way to listen before sending is the same. I won't go into details here.
  • the medium access control layer may also determine whether the pre-transmission listening is successful according to the second interception data and the second pre-transmission listening parameter.
  • the second initial value is a random value selected by the medium access control layer from the second period window, and the decremented value is that the media access control layer sends a first start indication to the physical layer to The number of cycles elapsed after the data included in the first protocol data unit is transmitted by the base station through the ordinary cell; when the signal strength of the air interface is lower than a predetermined At the threshold, it is detected whether the duration of the signal strength of the air interface below a predetermined threshold has exceeded the second arbitration listening interval.
  • the signal strength of the air interface is below a predetermined threshold and the duration of time exceeds the second arbitration listening interval, then it may be determined that the pre-transmission listening is successful. If the period counter is decremented from the second initial value to 0, the signal strength of the air interface is lower than a predetermined threshold, or when the period counter is decremented from the second initial value to 0, although the signal strength of the air interface is lower than a predetermined threshold, If the signal strength of the air interface is lower than a predetermined threshold but the duration does not exceed the second arbitration listening interval, it may be determined that the pre-transmission hearing fails.
  • Step 106 The physical layer starts the pre-transmission interception again according to the second initiation indication, and sends the second protocol data unit by granting the spectrum assisted access cell after the interception is successful.
  • the physical layer may send a second success notification to the media access control layer after the monitoring is successful, and after receiving the second success notification, the media access control The layer can determine that the listener was successful before sending.
  • the medium access control layer may then send the second protocol data unit to the physical layer. After receiving the second protocol data unit, the physical layer may send the second protocol data unit according to the air interface directly accessing the cell through the authorized spectrum.
  • the media access control layer may further send a second transmission indication to the physical layer, where the second transmission indication is used to instruct the physical layer to send the second protocol data unit.
  • the physical layer may send the second protocol data unit according to the air interface directly accessing the cell through the authorized spectrum.
  • the media access control layer sends the second protocol data unit to the physical layer before the transmission is successful, and the physical layer determines whether the pre-transmission listening is successful, the physical layer may directly directly listen after the transmission.
  • the second protocol data unit is sent through the air interface without waiting for the transmission indication of the medium access control layer.
  • the media access control layer may send a third initiation indication to the physical layer again, and send a third negotiation data unit to the physical layer until all data to be sent in the line link control layer is Send it.
  • the content and the transmission method included in the third activation instruction are similar to the content and the transmission method included in the second activation instruction, and the structure, the transmission mode, and the construction manner of the second data unit of the third data unit are Similar, it will not be repeated here.
  • the base station may send other data to be sent through the LAA cell after the data included in the first protocol data unit is sent by the base station through the ordinary cell. Therefore, it is possible to prevent the base station from repeatedly transmitting the same group of data when transmitting data through the ordinary cell and transmitting data through the LAA cell, and fully utilizing the data transmission capability of the LAA cell.
  • FIG. 3 is a schematic flowchart of another embodiment of a data transmission method of a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below in conjunction with FIG. 3.
  • Step 301 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 302 The medium access control layer constructs a first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 303 The medium access control layer sends the first protocol data unit to the physical layer.
  • Step 304 The medium access control layer sends a first start indication to the physical layer.
  • Step 305 The physical layer acquires the first interception data by listening before sending.
  • Step 306 The physical layer sends the first interception data to the media access control layer.
  • Step 307 The media access control layer determines, according to the first interception data and the pre-selected first pre-transmission listening parameter, whether the pre-transmission listening is successful.
  • Step 308 If the pre-transmission listening is successful, the media access control layer sends a first transmission indication to the physical layer.
  • Step 309 After receiving the first transmission indication, the physical layer sends the first protocol data unit by using an air interface.
  • the method may further include:
  • Step 310 If the pre-transmission listening fails, the media access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • FIG. 4 is a schematic flowchart of another embodiment of a data transmission method for a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below in conjunction with FIG. 4.
  • Step 401 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 402 The medium access control layer constructs a first protocol number according to data to be sent in the radio link control layer. According to the unit.
  • Step 403 The medium access control layer sends the first protocol data unit to the physical layer.
  • Step 404 The media access control layer sends a first start indication to the physical layer, where the first start indication carries the first pre-transmission listening parameter.
  • Step 405 The physical layer acquires the first interception data by listening before sending.
  • Step 406 The physical layer determines, according to the first interception data and the first pre-transmission listening parameter, whether the pre-transmission listening is successful.
  • Step 407 If the interception is successful before the sending, the physical layer sends the first protocol data unit by using an air interface.
  • the method may further include:
  • Step 408 If the pre-transmission listening fails, the physical layer sends a first failure notification to the media access control layer.
  • Step 409 The medium access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • FIG. 5 is a schematic flowchart of another embodiment of a data transmission method for a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below in conjunction with FIG. 5.
  • Step 501 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 502 The medium access control layer constructs a first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 503 The medium access control layer sends a first start indication to the physical layer.
  • Step 504 The medium access control layer sends the first protocol data unit to the physical layer.
  • Step 505 The physical layer acquires the first interception data by listening before sending.
  • Step 506 The physical layer sends the first interception data to the media access control layer.
  • Step 507 The media access control layer determines, according to the first interception data and the pre-selected first pre-transmission listening parameter, whether the pre-transmission listening is successful.
  • Step 508 If the pre-transmission listening is successful, the media access control layer sends a first transmission indication to the physical layer.
  • Step 509 After receiving the first transmission indication, the physical layer sends the first protocol data sheet by using an air interface. yuan.
  • the method may further include:
  • Step 510 If the pre-transmission interception fails, the media access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • FIG. 6 is a schematic flowchart diagram of another embodiment of a data transmission method for a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below in conjunction with FIG. 6.
  • Step 601 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 602 The medium access control layer constructs a first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 603 The media access control layer sends a first start indication to the physical layer, where the first start indication carries the first pre-transmission listening parameter.
  • Step 604 The medium access control layer sends the first protocol data unit to the physical layer.
  • Step 605 The physical layer acquires the first interception data by listening before sending.
  • Step 606 The physical layer determines, according to the first interception data and the first pre-transmission listening parameter, whether the pre-transmission listening is successful.
  • Step 607 If the interception is successful before sending, the physical layer sends the first protocol data unit by using an air interface.
  • the method may further include:
  • Step 608 If the pre-transmission listening fails, the physical layer sends a first failure notification to the media access control layer.
  • Step 609 The medium access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • FIG. 7 is a schematic flowchart diagram of another embodiment of a data transmission method for a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below in conjunction with FIG. 7.
  • Step 701 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 702 The medium access control layer constructs a first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 703 The medium access control layer sends a first start indication to the physical layer.
  • Step 704 The physical layer acquires the first interception data by sending the pre-transmission.
  • Step 705 The physical layer sends the first interception data to the media access control layer.
  • Step 706 The media access control layer determines whether the pre-transmission listening is successful according to the first interception data and the pre-selected first pre-transmission listening parameter.
  • Step 707 If the pre-transmission listening is successful, the media access control layer sends the first protocol data unit to the physical layer.
  • Step 708 After receiving the first protocol data unit, the physical layer sends the first protocol data unit by using an air interface.
  • the method may further include:
  • Step 709 If the pre-transmission listening fails, the media access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • FIG. 8 is a schematic flowchart of another embodiment of a data transmission method for a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below in conjunction with FIG. 8.
  • Step 801 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 802 The medium access control layer constructs a first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 803 The media access control layer sends a first start indication to the physical layer, where the first start indication carries the first pre-transmission listening parameter.
  • Step 804 The physical layer acquires the first interception data by listening before sending.
  • Step 805 The physical layer determines, according to the first interception data and the first pre-transmission listening parameter, whether the pre-transmission listening is successful.
  • Step 806 If the pre-transmission listening is successful, the physical layer sends a first success notification to the media access control layer.
  • Step 807 After receiving the first success notification, the media access control layer sends the first protocol data unit to the physical layer.
  • Step 808 After receiving the first protocol data unit, the physical layer sends the first protocol by using an air interface. Data unit.
  • the method may further include:
  • Step 809 If the pre-transmission listening fails, the physical layer sends a first failure notification to the media access control layer.
  • Step 810 The media access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • FIG. 9 is a schematic flowchart diagram of another embodiment of a data transmission method for a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below with reference to FIG. 9.
  • Step 901 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 902 The medium access control layer sends a first start indication to the physical layer.
  • Step 903 The medium access control layer constructs a first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 904 The medium access control layer sends the first protocol data unit to the physical layer.
  • Step 905 The physical layer acquires the first interception data by sending the pre-transmission.
  • Step 906 The physical layer sends the first interception data to the media access control layer.
  • Step 907 The media access control layer determines whether the pre-transmission listening is successful according to the first interception data and the pre-selected first pre-transmission listening parameter.
  • Step 908 If the pre-transmission listening is successful, the media access control layer sends a first transmission indication to the physical layer.
  • Step 909 After receiving the first transmission indication, the physical layer sends the first protocol data unit by using an air interface.
  • the method may further include:
  • Step 910 If the pre-transmission listening fails, the media access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • FIG. 10 is a schematic flowchart diagram of another embodiment of a data transmission method of a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below with reference to FIG. 10.
  • Step 1001 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 1002 The media access control layer sends a first start indication to the physical layer, where the first start indication carries the first pre-transmission listening parameter.
  • Step 1003 The medium access control layer constructs a first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 1004 The medium access control layer sends the first protocol data unit to the physical layer.
  • Step 1005 The physical layer acquires the first interception data by listening before sending.
  • Step 1006 The physical layer determines, according to the first interception data and the first pre-transmission listening parameter, whether the pre-transmission listening is successful.
  • Step 1007 If the interception is successful before the sending, the physical layer sends the first protocol data unit by using an air interface.
  • the method may further include:
  • Step 1008 If the pre-transmission listening fails, the physical layer sends a first failure notification to the media access control layer.
  • Step 1009 The media access control layer saves to-be-sent data included in the first protocol data unit to a radio link control layer.
  • FIG. 11 is a schematic flowchart diagram of another embodiment of a data transmission method of a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below with reference to FIG. 11.
  • Step 1101 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 1102 The medium access control layer sends a first start indication to the physical layer.
  • Step 1103 The medium access control layer constructs a first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 1104 The physical layer acquires the first interception data by listening before sending.
  • Step 1105 The physical layer sends the first interception data to the media access control layer.
  • Step 1106 The media access control layer determines whether the pre-transmission listening is successful according to the first interception data and the pre-selected first pre-transmission listening parameter.
  • Step 1107 If the pre-transmission listening is successful, the media access control layer sends the first protocol data unit to the physical layer.
  • Step 1108 After receiving the first protocol data unit, the physical layer sends the first association by using an air interface. Discuss data units.
  • the method may further include:
  • Step 1109 If the pre-transmission interception fails, the media access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • FIG. 12 it is a schematic flowchart of another embodiment of a data transmission method of a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below with reference to FIG.
  • Step 1201 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 1202 The media access control layer sends a first start indication to the physical layer, where the first start indication carries the first pre-transmission listening parameter.
  • Step 1203 The medium access control layer constructs a first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 1204 The physical layer acquires the first interception data by listening before sending.
  • Step 1205 The physical layer determines, according to the first interception data and the first pre-transmission listening parameter, whether the pre-transmission listening is successful.
  • Step 1206 If the interception is successful before sending, the physical layer sends a first success notification to the media access control layer.
  • Step 1207 After receiving the first success notification, the media access control layer sends the first protocol data unit to the physical layer.
  • Step 1208 After receiving the first PUD, the physical layer sends the first protocol data unit by using an air interface.
  • the method may further include:
  • Step 1209 If the pre-transmission listening fails, the physical layer sends a first failure notification to the media access control layer.
  • Step 1210 The media access control layer saves the to-be-sent data included in the first protocol data unit to the radio link control layer.
  • FIG. 13 is a schematic flowchart diagram of another embodiment of a data transmission method for a base station in a licensed spectrum assisted access cell according to the present invention. The present invention is further described below with reference to FIG.
  • Step 1301 The line link control layer accesses the medium when the data to be sent arrives at the radio link control layer.
  • the control layer sends a data arrival notification.
  • Step 1302 The medium access control layer sends a first start indication to the physical layer.
  • Step 1303 The physical layer acquires the first interception data by listening before sending.
  • Step 1304 The physical layer sends the first interception data to the media access control layer.
  • Step 1305 The media access control layer determines whether the pre-transmission listening is successful according to the first interception data and the pre-selected first pre-transmission listening parameter.
  • Step 1306 If the pre-transmission listening is successful, the media access control layer constructs the first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 1307 The medium access control layer sends the first protocol data unit to the physical layer.
  • Step 1308 After receiving the first protocol data unit, the physical layer sends the first protocol data unit by using an air interface.
  • FIG. 14 is a schematic flowchart diagram of another embodiment of a method for transmitting data in a licensed spectrum assisted access cell by a base station according to the present invention. The present invention is further described below in conjunction with FIG. 14.
  • Step 1401 The line link control layer sends a data arrival notification to the medium access control layer when the data to be transmitted arrives at the radio link control layer.
  • Step 1402 The media access control layer sends a first start indication to the physical layer, where the first start indication carries the first pre-transmission listening parameter.
  • Step 1403 The physical layer acquires the first interception data by listening before sending.
  • Step 1404 The physical layer determines, according to the first interception data and the first pre-transmission listening parameter, whether the pre-transmission listening is successful.
  • Step 1405 If the interception is successful before sending, the physical layer sends a first success notification to the media access control layer.
  • Step 1406 After receiving the first success notification, the media access control layer constructs the first protocol data unit according to the to-be-sent data in the radio link control layer.
  • Step 1407 sending the first protocol data unit to the physical layer.
  • Step 1408 After receiving the first PUD, the physical layer sends the first protocol data unit by using an air interface.
  • the method may further include:
  • Step 1409 If the pre-transmission listening fails, the physical layer sends a first failure notification to the media access control layer.
  • the embodiment of the present invention further provides a base station, which can use the data transmission method shown in FIG. 1 to FIG. Data transmission into the cell.
  • FIG. 15 is a schematic structural diagram of an embodiment of a base station according to the present invention.
  • the base station includes a radio link control layer 1501, a medium access control layer 1502, and a physical layer 1503.
  • the radio link control layer 1501, the medium access control layer 1502, and the physical layer 1503 may be implemented by independent physical devices, or may be implemented by the processor of the base station by executing instructions stored in the memory of the base station.
  • the physical device for implementing the radio link control layer 1501 may be a device responsible for establishing a logical link between the mobile terminal and the base station, and the entity device for implementing the media access control layer 1502 may be used for implementing media access control.
  • the device, the device for implementing the physical layer 1503, may be a device that implements transmission of the original data on the communication channel.
  • the media access control layer 1502 is configured to send a first start indication to the physical layer 1503, where the first start indication is used to instruct the physical layer 1503 to start pre-transmission listening; the media access The control layer 1502 is further configured to send, to the physical layer 1503, a first protocol data unit, where the first protocol data unit is configured by the media access control layer 1502 according to data to be sent in the radio link control layer 1501.
  • the physical layer 1503 is configured to start pre-transmission listening according to the first initiation indication, and send the first protocol data unit by granting a spectrum assisted access cell after the detection is successful before sending.
  • the media access control layer 1502 is further configured to send the first protocol data unit to the physical layer 1503 before sending the first start indication to the physical layer 1503.
  • the media access control layer 1502 is further configured to send the first protocol data unit to the physical layer 1503 when the monitoring is successful before sending.
  • the media access control layer 1502 is further configured to send, to the physical layer 1503, a first start indication that carries a first pre-transmission listening parameter, where the first pre-transmission listening parameter is Determining the quality of service of the data to be transmitted included in a protocol data unit, including a first arbitration listening interval and a first cycle number window; or sending a first start carrying the first parameter identifier to the physical layer 1503
  • the first parameter identifier is used to instruct the physical layer 1503 to use the first pre-transmission listening parameter in the pre-transmission listening parameter to perform pre-transmission listening.
  • the media access control layer 1502 is further configured to: after receiving the first success notification sent by the physical layer 1503, send the first protocol data unit to the physical layer 1503; a successful pass It is known that the physical layer 1503 sends a pre-transmission listening success according to the first pre-transmission listening parameter and the first interception data, and the first interception data is sent by the physical layer 1503 before sending. Listen to it.
  • the media access control layer 1502 is further configured to receive the first interception data reported by the physical layer 1503 after the first startup indication is sent to the physical layer 1503, where the first The interception data is obtained by the physical layer 1503 by sending a pre-transmission; determining whether the pre-transmission listening is successful according to the first pre-transmission listening parameter and the first interception data; and detecting before the transmitting After successful, the first protocol data unit is sent to the control layer.
  • the media access control layer 1502 is further configured to: when the period counter is decremented from the first initial value to 0, determine, according to the first intercept data, whether the signal strength of the air interface of the base station is lower than a predetermined one. a threshold, wherein the first initial value is a random value selected by the medium access control layer 1502 from the first cycle number window; and when the signal strength of the air interface is lower than a predetermined threshold, detecting the air interface Whether the duration of the signal strength lower than the predetermined threshold has exceeded the first arbitration listening interval; if the signal strength of the air interface is lower than the predetermined threshold and the duration exceeds the first arbitration listening interval, it is determined that the interception is successful before the transmission If the signal strength of the air interface is lower than a predetermined threshold but the duration does not exceed the first arbitration listening interval, it is determined that the pre-transmission hearing fails.
  • the media access control layer 1502 is further configured to send a first transmission indication to the physical layer 1503, where the first transmission indication is used to instruct the physical layer 1503 to send the first protocol data unit. .
  • the media access control layer 1502 is further configured to save the to-be-sent data included in the first protocol data unit to the radio link control layer 1501 after the pre-transmission listening failure.
  • the media access control layer 1502 is further configured to: the data included in the first protocol data unit is sent by the base station by using a common cell, and the data to be sent still exists in the radio link control layer 1501. Sending, to the physical layer 1503, a second initiation indication, where the second activation indication is used to instruct the physical layer 1503 to start pre-transmission listening again; the media access control layer 1502 is further configured to The physical layer 1503 sends a second protocol data unit, where the second protocol data unit is configured by the medium access control layer 1502 according to the to-be-sent data in the radio link control layer 1501; the physical layer 1503 is also used. After the pre-transmission interception is started according to the second initiation indication, and after the detection is successful before the transmission, the second protocol data unit is sent by the authorized spectrum auxiliary access cell.
  • the media access control layer 1502 is further configured to receive the second interception data reported by the physical layer 1503, where the second interception data is obtained by the physical layer 1503 by sending a pre-transmission; Determining whether the pre-transmission listening is successful according to the second pre-transmission listening parameter and the second interception data, where the second pre-transmission listening parameter is determined by the quality of service of the data to be transmitted included in the second protocol data unit, Including the second arbitration listening interval and a second period number window; the second protocol data unit is sent to the control layer after the listening is successful.
  • the medium access control layer 1502 is further configured to determine, according to the second interception data, whether a signal strength of the air interface is lower than a predetermined threshold, when the period counter is decremented to 0.
  • the target value is a difference between a second count value and a decrement value
  • the second initial value is a random value selected by the medium access control layer 1502 from the second period number window, the decremented value Transmitting, by the medium access control layer 1502, the first start indication to the physical layer 1503 to the number of cycles that the data included in the first protocol data unit is transmitted by the base station through the ordinary cell; when the signal strength of the air interface is low
  • the listening interval is determined to be successful before the sending; if the signal strength of the air interface is lower than the predetermined threshold but the duration
  • the medium access control layer 1502 is further configured to construct the first protocol data unit before sending the first start indication to the physical layer 1503; or, further, to send the first start to the physical layer 1503.
  • the first protocol data unit is constructed after the indication.
  • the media access control layer 1502 is further configured to construct the first protocol data unit after the monitoring is successful before sending.
  • the physical layer 1503 is further configured to: when the period counter is decremented from the first initial value to 0, determine, according to the first interception data, whether a signal strength of the air interface of the base station is lower than a predetermined threshold, where The first initial value is a random value selected by the media access control layer 1502 from the first cycle number window; when the signal strength of the air interface is lower than a predetermined threshold, detecting that the signal strength of the air interface is low Whether the duration of the predetermined threshold has exceeded the first arbitration listening interval; if the signal strength of the air interface is lower than the predetermined threshold and the duration exceeds the first arbitration listening interval, it is determined that the interception is successful before sending; If the signal strength of the air interface is lower than the predetermined threshold but the duration of the duration does not exceed the first arbitration listening interval, it is determined that the interception before the transmission fails.
  • the physical layer 1503 is further configured to send a first success indication to the media access control layer 1502 after determining that the interception is successful before sending, or to the media access control layer after determining that the interception fails before sending. 1502 sends a first failure indication.
  • the physical layer 1503 is further configured to: determine, according to the second interception data, whether a signal strength of the air interface is lower than a predetermined threshold, where the target is decreased when the period counter is decremented to 0.
  • the value is a difference between the second count value and the decrement value, and the second initial value is a random value selected by the medium access control layer 1502 from the second period number window, and the decrement value is the Media access control layer 1502 to the physical layer
  • the number of cycles elapsed after the first start indication is sent to the data included in the first protocol data unit is sent by the base station through the ordinary cell; when the signal strength of the air interface is lower than a predetermined threshold, the signal strength of the air interface is detected.
  • the duration of the duration below the predetermined threshold has exceeded the second arbitration listening interval; if the signal strength of the air interface is lower than the predetermined threshold and the duration exceeds the second arbitration listening interval, it is determined that the interception is successful before sending; If the signal strength of the air interface is lower than a predetermined threshold but the duration does not exceed the second arbitration listening interval, it is determined that the pre-transmission hearing fails.
  • the physical layer 1503 is further configured to send a second success indication to the media access control layer 1502 after determining that the monitoring is successful before sending, or to the media access control layer after determining that the interception fails before sending. 1502 sends a second failure indication.
  • the base station provided by the embodiment may compete with the WiFi device for the wireless resource in the licensed spectrum assisted access cell, and perform data transmission after competing for the wireless resource.
  • FIG. 16 is a schematic structural diagram of another embodiment of a base station according to the present invention.
  • the base station includes a processor, a memory, and a data transceiver unit.
  • the processor is configured to execute an application stored in the memory
  • the present invention further provides a computer storage medium, wherein the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments of the data transmission method provided by the present invention.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • the techniques in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform. Based on such understanding, the technical solution in the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, which may be stored in a storage medium such as a ROM/RAM. , a disk, an optical disk, etc., including a number of instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of various embodiments or embodiments of the present invention.
  • a computer device which may be a personal computer, server, or network device, etc.

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Abstract

本申请提供了基站在授权频谱辅助接入小区中的数据传输方法及基站。所述基站包括媒体接入控制层及物理层，所述方法包括：所述媒体接入控制层向所述物理层发送第一启动指示，所述第一启动指示用于指示所述物理层启动发送前侦听；所述媒体接入控制层向所述物理层发送第一协议数据单元，所述第一协议数据单元由所述媒体接入控制层根据无线链路控制层中的待发送数据构造；所述物理层根据所述第一启动指示启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第一协议数据单元。采用本申请所提供的基站及数据传输方法，基站可以在授权频谱辅助接入小区中与WiFi设备进行无线资源竞争，并在竞争到无线资源后进行数据传输。

Description

基站在授权频谱辅助接入小区中的数据传输方法及基站 技术领域
本发明涉及领域，尤其涉及基站在授权频谱辅助接入小区中的数据传输方法及基站。
背景技术
为缓解频谱资源不足，第三代合作伙伴计划(3rd Generation Partnership Project，简称3GPP)已经确定采用授权频谱辅助接入(Licensed-Assisted Access，简称LAA)小区提供无线通信，从而使基站既可以在普通小区进行数据传输，又可以在授权频谱辅助接入小区进行数据传输。其中，普通小区则是指在预定的蜂窝移动通信频段采用蜂窝移动通信标准进行数据传输的小区，而授权频谱辅助接入小区则是指在无线保真(Wireless Fidelity，简称WiFi)频段采用蜂窝移动通信标准进行数据传输的小区，蜂窝移动通信频段可以是长期演进(Long Term Evolution，简称LTE)频段等。由于基站既可以在LAA小区使用WiFi频段进行传输，又可以在普通小区使用LTE频段进行数据传输，因此可以大大基站的数据传输能力。
现有的WiFi设备在使用WiFi频段进行数据传输时，首先需要进行无线资源竞争。只有在竞争到无线资源后，WiFi设备才能进行数据传输。采用此方式，可以避免多个WiFi设备的数据传输发生冲突。而基站通过授权频谱辅助接入小区进行数据传输时，也需要使用WiFi频段，因此为避免基站与WiFi设备之间发送数据传输冲突，保证基站及WiFi设备能够正常进行数据传输，基站在授权频谱辅助接入小区使用WiFi频段进行数据传输时，也需要其他WiFi设备或基站进行无线资源竞争，并在竞争到无线资源后进行数据传输。
因此需要一种新的数据传输方法，以实现基站在授权频谱辅助接入小区中与WiFi设备进行无线资源竞争，并在竞争到无线资源后进行数据传输。
发明内容
本发明实施例提供了，基站在授权频谱辅助接入小区中的数据传输方法及基站，可以在授权频谱辅助接入小区中与WiFi设备进行无线资源竞争，并在竞争到无线资 源后进行数据传输。
第一方面，本申请提供了一种基站在授权频谱辅助接入小区中的传输方法，所述基站包括媒体接入控制层及物理层，所述方法包括：所述媒体接入控制层向所述物理层发送第一启动指示，所述第一启动指示用于指示所述物理层启动发送前侦听；所述媒体接入控制层向所述物理层发送第一协议数据单元，所述第一协议数据单元由所述媒体接入控制层根据无线链路控制层中的待发送数据构造；所述物理层根据所述第一启动指示启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第一协议数据单元。
结合第一方面，在第一方面第一种可能的实现方式中，所述媒体接入控制层向所述物理层发送第一协议数据单元包括：在向所述物理层发送所述第一启动指示之前，所述媒体接入控制层向所述物理层发送所述第一协议数据单元。
结合第一方面，在第一方面第一种可能的实现方式中，所述媒体接入控制层向所述物理层发送第一协议数据单元包括：若发送前侦听成功，所述媒体接入控制层向所述物理层发送所述第一协议数据单元。
结合第一方面第二种可能的实现方式，在第一方面第三种可能的实现方式中，所述媒体接入控制层向所述物理层发送第一启动指示包括：所述媒体接入控制层向所述物理层发送携带第一发送前侦听参数的第一启动指示，所述第一发送前侦听参数由所述第一协议数据单元中所包含的待发送数据的服务质量决定，包括第一仲裁侦听间隔及第一周期数窗口；或者，所述媒体接入控制层向所述物理层发送携带第一参数标识的第一启动指示，所述第一参数标识用于指示物理层使用备选发送前侦听参数中的所述第一发送前侦听参数进行发送前侦听。
结合第一方面第三种可能的实现方式，在第一方面第四种可能的实现方式中，在向所述物理层发送所述第一启动指示之后，若发送前侦听成功，则所述媒体接入控制层向所述物理层发送第一协议数据单元包括：在接收到所述物理层发送的第一成功通知后，所述媒体接入控制层向所述物理层发送第一协议数据单元；其中，所述第一成功通知由所述物理层在根据所述第一发送前侦听参数及第一侦听数据判定发送前侦听成功后发送，所述第一侦听数据由所述物理层通过发送前侦听获得。
结合第一方面第二种可能的实现方式，在第一方面第五种可能的实现方式中，若发送前侦听成功，则所述媒体接入控制层向所述物理层发送所述第一协议数据单元，包括：在向所述物理层发送所述第一启动指示之后，所述媒体接入控制层接收所 述物理层上报的第一侦听数据，所述第一侦听数据由所述物理层通过发送前侦听获得；所述媒体接入控制层根据第一发送前侦听参数及所述第一侦听数据确定所述发送前侦听是否成功；在确定所述发送前侦听成功后，所述媒体接入控制层向所述控制层发送所述第一协议数据单元。
结合第一方面第五种可能的实现方式，在第一方面第六种可能的实现方式中，所述媒体接入控制层根据第一发送前侦听参数及所述第一侦听数据判定发送前侦听是否成功，包括：所述媒体接入控制层在周期计数器由第一初始值递减为0时，根据所述第一侦听数据判断所述基站的空口的信号强度是否低于预定阈值，其中所述第一初始值为所述媒体接入控制层从所述第一周期数窗口中选择的随机值；当所述空口的信号强度低于预定阈值时，所述媒体接入控制层检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第一仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第一仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第一仲裁侦听间隔，则判定发送前侦听失败。
结合第一方面或第一方面第一至二种可能的实现方式其中任意一种，在第一方面第七种可能的实现方式中，在所述媒体接入控制层向所述物理层发送第一协议数据单元之后，还包括：若发送前侦听成功，则所述媒体接入控制层向所述物理层发送第一传输指示，所述第一传输指示用于指示所述物理层发送所述第一协议数据单元。
结合第一方面或第一方面第一至二种可能的实现方式其中任意一种，在第一方面第八种可能的实现方式中，所述方法还包括：若发送前侦听失败，所述媒体接入控制层将所述第一协议数据单元中所包含的待发送数据保存至所述无线链路控制层。
结合第一方面或第一方面第一至二种可能的实现方式其中任意一种，在第一方面第九种可能的实现方式中，所述方法还包括：若在发送前侦听成功前，所述第一协议数据单元所包含的数据被基站通过普通小区发送，且所述无线链路控制层中仍存在待发送数据，所述媒体接入控制层向所述物理层发送第二启动指示，所述第二启动指示用于指示所述物理层再次启动发送前侦听；所述媒体接入控制层向所述物理层发送第二协议数据单元，所述第二协议数据单元由所述媒体接入控制层根据所述无线链路控制层中的待发送数据构造；所述物理层根据所述第二启动指示再次启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第二协议数据单元。
结合第一方面第九种可能的实现方式，在第一方面第十种可能的实现方式中，所述媒体接入控制层向所述物理层发送第二协议数据单元包括：所述媒体接入控制层 接收所述物理层上报的第二侦听数据，所述第二侦听数据由所述物理层通过发送前侦听获得；所述媒体接入控制层根据第二发送前侦听参数及第二侦听数据判定发送前侦听是否成功，所述第二发送前侦听参数由所述第二协议数据单元中所包含待发送数据的服务质量决定，包括第二仲裁侦听间隔及第二周期数窗口；在发送前侦听成功后，所述媒体接入控制层向所述控制层发送所述第二协议数据单元。
结合第一方面第十种可能的实现方式，在第一方面第十一种可能的实现方式中，所述媒体接入控制层根据第二发送前侦听参数及所述第二侦听数据判定发送前侦听是否成功包括：所述媒体接入控制层在周期计数器由目标值递减为0时，根据所述第二侦听数据判断所述空口的信号强度是否低于预定阈值，其中，所述目标值为第二计数值与已递减值之差，所述第二初始值为所述媒体接入控制层从所述第二周期数窗口中选择的随机值，所述已递减值为所述媒体接入控制层向物理层发送第一启动指示至所述第一协议数据单元所包含的数据被基站通过普通小区发送所经过的周期数；当所述空口的信号强度低于预定阈值时，所述媒体接入控制层检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第二仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第二仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第二仲裁侦听间隔，则判定发送前侦听失败。
结合第一方面，在第一方面第十二种可能的实现方式中，所述第一协议数据单元由所述媒体接入控制层在向物理层发送第一启动指示之前构造；或者，所述第一协议数据单元由所述媒体接入控制层在向物理层发送第一启动指示之后构造。
结合第一方面第三种可能的实现方式，在第一方面第十三种可能的实现方式中，所述第一协议数据单元由所述媒体接入控制层在发送前侦听成功后构造。
第二方面，本申请还提供了一种基站，包括无线链路控制层、媒体接入控制层及物理层，所述媒体接入控制层，用于向所述物理层发送第一启动指示，所述第一启动指示用于指示所述物理层启动发送前侦听；所述媒体接入控制层，还用于向所述物理层发送第一协议数据单元，所述第一协议数据单元由所述媒体接入控制层根据无线链路控制层中的待发送数据构造；所述物理层，用于根据所述第一启动指示启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第一协议数据单元。
结合第二方面，在第二方面第一种可能的实现方式中，所述媒体接入控制层， 还用于在向所述物理层发送所述第一启动指示之前，向所述物理层发送所述第一协议数据单元。
结合第二方面，在第二方面第一种可能的实现方式中，所述媒体接入控制层，还用于在发送前侦听成功时，向所述物理层发送所述第一协议数据单元。
结合第二方面第二种可能的实现方式，在第二方面第三种可能的实现方式中，所述媒体接入控制层，还用于向所述物理层发送携带第一发送前侦听参数的第一启动指示，所述第一发送前侦听参数由所述第一协议数据单元中所包含的待发送数据的服务质量决定，包括第一仲裁侦听间隔及第一周期数窗口；或者，用于向所述物理层发送携带第一参数标识的第一启动指示，所述第一参数标识用于指示物理层使用备选发送前侦听参数中的所述第一发送前侦听参数进行发送前侦听。
结合第二方面第三种可能的实现方式，在第二方面第四种可能的实现方式中，所述媒体接入控制层，还用于在接收到所述物理层发送的第一成功通知后，向所述物理层发送第一协议数据单元；其中，所述第一成功通知由所述物理层在根据所述第一发送前侦听参数及第一侦听数据判定发送前侦听成功后发送，所述第一侦听数据由所述物理层通过发送前侦听获得。
结合第二方面第二种可能的实现方式，在第二方面第五种可能的实现方式中，所述媒体接入控制层，还用于在向所述物理层发送所述第一启动指示之后，接收所述物理层上报的第一侦听数据，所述第一侦听数据由所述物理层通过发送前侦听获得；根据第一发送前侦听参数及所述第一侦听数据确定所述发送前侦听是否成功；在确定所述发送前侦听成功后，向所述控制层发送所述第一协议数据单元。
结合第二方面第五种可能的实现方式，在第二方面第六种可能的实现方式中，所述媒体接入控制层，还用于在周期计数器由第一初始值递减为0时，根据所述第一侦听数据判断所述基站的空口的信号强度是否低于预定阈值，其中所述第一初始值为所述媒体接入控制层从所述第一周期数窗口中选择的随机值；当所述空口的信号强度低于预定阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第一仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第一仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第一仲裁侦听间隔，则判定发送前侦听失败。
结合第二方面或第二方面第一至二种可能的实现方式其中任意一种，在第二方面第七种可能的实现方式中，所述媒体接入控制层，还用于向所述物理层发送第一传 输指示，所述第一传输指示用于指示所述物理层发送所述第一协议数据单元。
结合第二方面或第二方面第一至二种可能的实现方式其中任意一种，在第二方面第八种可能的实现方式中，所述媒体接入控制层，还用于在发送前侦听失败后，将所述第一协议数据单元中所包含的待发送数据保存至所述无线链路控制层。
结合第二方面或第二方面第一至二种可能的实现方式其中任意一种，在第二方面第九种可能的实现方式中，所述媒体接入控制层，还用于在所述第一协议数据单元所包含的数据被基站通过普通小区发送，且所述无线链路控制层中仍存在待发送数据时，向所述物理层发送第二启动指示，所述第二启动指示用于指示所述物理层再次启动发送前侦听；所述媒体接入控制层，还用于向所述物理层发送第二协议数据单元，所述第二协议数据单元由所述媒体接入控制层根据所述无线链路控制层中的待发送数据构造；所述物理层，还用于根据所述第二启动指示再次启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第二协议数据单元。
结合第二方面第九种可能的实现方式，在第二方面第十种可能的实现方式中，所述媒体接入控制层，还用于在周期计数器由目标值递减为0时，根据所述第二侦听数据判断所述空口的信号强度是否低于预定阈值，其中，所述目标值为第二计数值与已递减值之差，所述第二初始值为所述媒体接入控制层从所述第二周期数窗口中选择的随机值，所述已递减值为所述媒体接入控制层向物理层发送第一启动指示至所述第一协议数据单元所包含的数据被基站通过普通小区发送所经过的周期数；当所述空口的信号强度低于预定阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第二仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第二仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第二仲裁侦听间隔，则判定发送前侦听失败。
结合第二方面第十种可能的实现方式，在第二方面第十一种可能的实现方式中，
结合第二方面，在第二方面第十二种可能的实现方式中，所述媒体接入控制层，还用于在向物理层发送第一启动指示之前构造所述第一协议数据单元；或者，还用于在向物理层发送第一启动指示之后构造所述第一协议数据单元。
结合第二方面第三种可能的实现方式，在第二方面第十三种可能的实现方式中，所述媒体接入控制层，还用于在发送前侦听成功后构造所述第一协议数据单元。
在本发明实施例中，所述媒体接入控制层向所述物理层发送第一启动指示，所 述第一启动指示用于指示所述物理层启动发送前侦听；所述媒体接入控制层向所述物理层发送第一协议数据单元，所述第一协议数据单元由所述媒体接入控制层根据无线链路控制层中的待发送数据构造；所述物理层根据所述第一启动指示启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第一协议数据单元。采用本申请所提供的基站及数据传输方法，基站可以在授权频谱辅助接入小区中与WiFi设备进行无线资源竞争，并在竞争到无线资源后进行数据传输。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明基站在授权频谱辅助接入小区中的传输方法一个实施例的流程示意图；
图2为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
图3为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
图4为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
图5为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
图6为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
图7为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
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图9为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
图10为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
图11为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
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图13为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
图14为本发明基站在授权频谱辅助接入小区中的传输方法另一个实施例的流程示意图；
图15为本发明基站一个实施例的结构示意图。
具体实施方式
为了使本领域技术人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在此需要说明的是，在本发明实施例中，发送前侦听是否成功是指是网络设备通过发送前侦听是否竞争到无线资源。发送前侦听成功是指网络通过发送前侦听竞争到了无线资源，而发送前侦听失败是指网络设备未能够通过发送前侦听竞争到无线资源。
在此需要说明的是，在本发明实施例中，所述基站可以包括无线链路控制(Radio Link Control，简称RLC)层、媒体接入控制(Medium Access Control，简称MAC)层及物理层(Physical layer，简称PHY)，所述基站既可以通过普通方式接入普通小区，也可以通过授权频谱辅助接入方式接入授权频谱辅助接入小区。其中，MAC层生成的协议数据单元(Protocol Data Unit，简称PDU)，通常又被称作MAC PDU。
如果无特殊说明，物理层发送协议数据单元是指物理层采用授权频谱辅助接入小区的无线资源，通过空口发送协议数据单元。
参见图1，为本发明基站在接入授权频谱辅助接入小区中的数据传输方法一个实施例的流程示意图。该实施例中所述的方法可以由基站中的媒体接入控制层执行。
步骤101，所述媒体接入控制层向所述物理层发送第一启动指示，所述第一启动指示用于指示所述物理层启动发送前侦听。
在向物理层发送第一启动指示之前，媒体接入控制层可以预先选定第一发送前侦听参数，以便于在后续根据第一发送前侦听参数确定发送前侦听是否成功。
所述第一发送前侦听参数由所述第一协议数据单元中所包含待发送数据的服务质量决定，可以包括第一仲裁侦听间隔(Arbitration inter-frame spacing，简称AIFS)及第一周期数窗口等参数，也可以包括在发送前侦听成功后可以用于数据传输的最长时间等。其中，待发送数据的服务质量优先级越高，第一仲裁侦听间隔越短、第一周期数窗口越小、可以用于数据传输的最长时间越长。
为使物理层能够判断发送前侦听是否成功，所述第一启动指示中可以携带第一发送前侦听参数或者第一参数标识。其中，第一参数标识用于指示物理层使用备选发送前侦听参数中的所述第一发送前侦听参数进行发送前侦听。
步骤102，所述媒体接入控制层向所述物理层发送第一协议数据单元，所述第一协议数据单元由所述媒体接入控制层根据无线链路控制层中的待发送数据构造。
所述媒体接入控制层可以在向所述物理层发送所述第一启动指示之前，向所述物理层发送第一协议数据单元。或者，所述媒体接入控制层也可以在向所述物理层发送所述第一启动指示之后，向所述物理层发送第一协议数据单元。或者，所述媒体接入控制层也可以在向所述物理层发送所述第一启动指示，且发送前侦听成功后，再向所述物理层发送第一协议数据单元。媒体接入控制层向物理层发送第一协议数据单元的时机可以根据需要预先设定。本申请不对媒体接入控制层向所述物理层发送第一协议数据单元及媒体接入控制层向物理层发送第一启动指示的时序进行限定。
发送前侦听是否成功，可以由媒体接入控制层根据第一侦听数据及第一发送前侦听参数判定；或者，也可以由物理层根据第一侦听数据及第一发送前侦听参数判定，其中，所述第一侦听数据由所述物理层通过发送前侦听获得，通产为用于反应空口信号强度的信息。
当由媒体接入控制层判定发送前侦听是否成功时，所述媒体接入控制层可以采用如下方式根据第一侦听数据及第一发送前侦听参数判定发送前侦听是否成功：
在周期计数器由第一初始值递减为0时，根据所述第一侦听数据判断所述空口的信号强度是否低于预定阈值，其中所述第一初始值为所述媒体接入控制层从所述第一周期数窗口中选择的随机值；当所述空口的信号强度低于预定阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第一仲裁侦听间隔。若周期计数器由第一初始值递减为0时，所述空口的信号强度低于预定阈值且在此之后持续的时长超过第一仲裁侦听间隔，则判定发送前侦听成功。如果在周期计数器由第一初始值递减为0时，空口的信号强度高低于预定阈值，或者，在周期计数器由第一初始值递减为0时，虽然空口的信号强度低于预定阈值，但是所述空口的信号强度低于预定阈值所持续的时长未超过第一仲裁侦听间隔，则可以判定发送前侦听失败。
物理层根据第一侦听数据及第一发送前侦听参数判定发送前侦听是否成功的方式与媒体接入控制层参数判定发送前侦听是否成功相类似，在此就不再赘述。
步骤103，所述物理层根据所述第一启动指示启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第一协议数据单元。
当由物理层判定发送前侦听是否成功时，物理层可以在发送前侦听成功后向媒体接入控制层发送第一成功通知。当接收到第一成功通知后，所述媒体接入控制层可以确定发送前侦听成功。在接收到第一成功通知后，媒体接入控制层可以向所述物理层发送第一协议数据单元。物理层在接收到第一协议数据单元后，通过授权频谱辅助接入小区，发送所述第一协议数据单元。
如果发送前侦听失败，物理层也可以向媒体介入控制层发送第一失败通知。当接收到第一失败通知后，所述媒体接入控制层可以确定发送前侦听失败。
如果媒体接入控制层在发送前侦听成功前向所述物理层发送第一协议数据单元，并且由媒体接入控制层判定发送前侦听是否成功，那么在发送前侦听成功后，所述媒体接入控制层还可以向所述物理层发送第一传输指示，所述第一传输指示用于指示所述物理层发送所述第一协议数据单元。物理层在接收到第一传输指示后，通过授权频谱辅助接入小区，发送所述第一协议数据单元。
如果媒体接入控制层在发送前侦听成功前向所述物理层发送第一协议数据单元，并且由物理层判定发送前侦听是否成功，那么物理层在发送前侦听成功后，可以直接通过空口发送所述第一协议数据单元，而不必再等待媒体接入控制层的传输指示。
在实际使用中，可能会出现发送前侦听失败的情况，如果发送前侦听失败，所述媒体接入控制层还需要将所述第一协议数据单元中所包含的待发送数据保存至所述无线链路控制层，以便于后续再进行发送。
当由物理层判定发送前侦听是否成功时，物理层可以在发送前侦听失败后，向媒体接入控制层发送第一失败通知，媒体接入控制层如果收到物理层发送的第一失败通知，则可以确定发送前侦听失败，然后可以对所述第一协议数据单元进行解包，并将第一协议数据单元中所包含的待发送数据保存至所述无线链路控制层。
在此需要说明的是，所述第一协议数据单元可以由所述媒体接入控制层在向物理层发送第一启动指示之前构造；或者，也可以由所述媒体接入控制层在向物理层发送第一启动指示之后构造；当媒体接入控制层在发送前侦听成功后发送所述第一启动指示时，所述述第一协议数据单元也可以由所述媒体接入控制层在发送前侦听成功之后构造。
在本实施例中，所述媒体接入控制层向所述物理层发送第一启动指示，所述第一启动指示用于指示所述物理层启动发送前侦听；所述媒体接入控制层向所述物理层发送第一协议数据单元，所述第一协议数据单元由所述媒体接入控制层根据无线链路控制层中的待发送数据构造；所述物理层根据所述第一启动指示启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第一协议数据单元。采用本实施例所提供的方法，基站可以通过发送前侦听进行无线资源竞争，并在发送前侦听成功后进行数据传输，由于在WiFi设备也通过发送前侦听进行无线资源竞争，因此基站可以在授权频谱辅助接入小区中与WiFi设备进行无线资源竞争。
由于基站在通过授权频谱辅助接入小区传输数据的同时，还可以通过普通小区发送数据。因此在发送前侦听成功前，所述第一协议数据单元的所包含的数据可能会被基站通过普通小区发送。由于在无线链路控制层中除第一协议数据单元所包含的数据外，可能还存在其他的待发送数据，因此如图2所示，如果所述第一协议数据单元所包含的数据被基站通过普通小区发送，且所述无线链路控制层中仍存在待发送数据，那么在步骤102之后还可以包括：
步骤104，若在发送前侦听成功前，所述第一协议数据单元所包含的数据被基站通过普通小区发送，且所述无线链路控制层中仍存在待发送数据，所述媒体接入控制层向所述物理层发送第二启动指示，所述第二启动指示用于指示所述物理层再次启动发送前侦听。
与第一启动指示相类似，在向物理层发送第二启动指示之前，媒体接入控制层可以预先选定第二发送前侦听参数，以便于在后续根据第二发送前侦听参数确定发送前侦听是否成功。所述第二发送前侦听参数由所述第二协议数据单元中所包含待发送数据的服务质量决定，可以包括第二仲裁侦听间隔仲裁侦听间隔及第二周期数窗口等判断发送前侦听是否成功所需要的参数，还可以包括在发送前侦听成功后可以用于数据传输的最长时间等。
同样的，为使物理层能够判断发送前侦听是否成功，所述第二启动指示中可以携带第二发送前侦听参数或者第二参数标识。其中，所述第二参数标识用于指示物理层使用备选发送前侦听参数中的所述第二发送前侦听参数进行发送前侦听。
步骤105，所述媒体接入控制层向所述物理层发送第二协议数据单元，所述第二协议数据单元由所述媒体接入控制层根据所述无线链路控制层中的待发送数据构造。
与媒体接入控制层向物理层发送第一启动指示及第一协议数据单元的方式相类似，媒体接入控制层也可以在向所述物理层发送所述第二启动指示之后，向所述物理层发送第二协议数据单元。具体来说，所述媒体接入控制层可以在发送前侦听成功前向所述物理层发送第二协议数据单元，或者也可以在发送前侦听成功后向所述物理层发送第二协议数据单元。
发送前侦听是否成功，可以由媒体接入控制层根据第二侦听数据及第二发送前侦听参数判定；或者，也可以由物理层根据第二侦听数据及第二发送前侦听参数判定，其中，所述第二侦听数据由所述物理层通过发送前侦听获得。
媒体接入控制层根据第二侦听数据及第二发送前侦听参数判定发送前侦听是否成功方式，可以与媒体接入控制层根据第一侦听数据及第一发送前侦听参数判定发送前侦听是否成功方式相同。在此就不再赘述。
为充分利用授权频谱辅助接入小区的数据传输能力，所述媒体接入控制层也可以采用如下方式根据第二侦听数据及第二发送前侦听参数判定发送前侦听是否成功：
在周期计数器由目标值递减为0时，根据所述第二侦听数据判断所述空口的信号强度是否低于预定阈值，其中，所述目标值为第二计数值与已递减值之差，所述第二初始值为所述媒体接入控制层从所述第二周期数窗口中选择的随机值，所述已递减值为所述媒体接入控制层向物理层发送第一启动指示至所述第一协议数据单元所包含的数据被基站通过普通小区发送所经过的周期数；当所述空口的信号强度低于预定 阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第二仲裁侦听间隔。
如果所述空口的信号强度低于预定阈值且持续的时长超过第二仲裁侦听间隔，那么可以判定发送前侦听成功。如果在周期计数器由第二初始值递减为0时，空口的信号强度高低于预定阈值，或者，在周期计数器由第二初始值递减为0时，虽然空口的信号强度低于预定阈值，但是所述空口的信号强度低于预定阈值但持续的时长未超过第二仲裁侦听间隔，则可以判定发送前侦听失败。
步骤106，所述物理层根据所述第二启动指示再次启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第二协议数据单元。
当由物理层判定发送前侦听是否成功时，物理层可以在发送前侦听成功后向媒体接入控制层发送第二成功通知，当接收到第二成功通知后，所述媒体接入控制层可以确定发送前侦听成功。然后所述媒体接入控制层可以向所述物理层发送所述第二协议数据单元。物理层在接收到第二协议数据单元之后，可以根据直接通过授权频谱辅助接入小区的空口发送所述第二协议数据单元。
同样的，如果媒体接入控制层在发送前侦听成功前向所述物理层发送第二协议数据单元，并且由媒体接入控制层判定发送前侦听是否成功，那么在发送前侦听成功后，所述媒体接入控制层还可以向所述物理层发送第二传输指示，所述第二传输指示用于指示所述物理层发送所述第二协议数据单元。物理层在接收到第二传输指示之后，可以根据直接通过授权频谱辅助接入小区的空口发送所述第二协议数据单元。
如果媒体接入控制层在发送前侦听成功前向所述物理层发送第二协议数据单元，并且由物理层判定发送前侦听是否成功，那么物理层在发送前侦听成功后，可以直接通过空口发送所述第二协议数据单元，而不必再等待媒体接入控制层的传输指示。
在此需要说明的是，如果在LBT成功前，所述第二议数据单元所包含的数据也被基站通过LTE小区发送，且所述线链路控制层的缓冲器(Buffer)中仍存在待发送数据，那么所述媒体接入控制层可以再次向所述物理层发送第三启动指示，并向所述物理层发送第三议数据单元，直至线链路控制层中的待发送数据全部被发送完。其中，第三启动指示所包含的内容及发送方式与第二启动指示的所包含的内容及发送方式相类似，第三议数据单元有的构造方式及发送方式与第二议数据单元的构造方式相类似，在此就不再赘述。
采用本实施例所提供的方法，基站可以在第一协议数据单元所包含的数据被基站通过普通小区发送后，通过LAA小区发送其他的待发送数据。从而既可以避免基站既通过普通小区发送数据又通过LAA小区发送数据时发生重复发送同一组数据的情况，又可以充分利用LAA小区的数据发送能力。
参见图3，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图3对本发明做进一步说明。
步骤301，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤302，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤303，媒体接入控制层向物理层发送所述第一协议数据单元。
步骤304，媒体接入控制层向物理层发送第一启动指示。
步骤305，物理层通过发送前侦听获取第一侦听数据。
步骤306，物理层向媒体接入控制层发送第一侦听数据。
步骤307，媒体接入控制层根据第一侦听数据及预先选定的第一发送前侦听参数判断发送前侦听是否成功。
步骤308，如果发送前侦听成功，媒体接入控制层向物理层发送第一传输指示。
步骤309，物理层在接收到第一传输指示后，通过空口发送所述第一协议数据单元。
所述方法还可以包括：
步骤310，如果发送前侦听失败，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图4，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图4对本发明做进一步说明。
步骤401，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤402，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数 据单元。
步骤403，媒体接入控制层向物理层发送所述第一协议数据单元。
步骤404，媒体接入控制层向物理层发送第一启动指示，所述第一启动指示携带第一发送前侦听参数。
步骤405，物理层通过发送前侦听获取第一侦听数据。
步骤406，物理层根据第一侦听数据及第一发送前侦听参数判断发送前侦听是否成功。
步骤407，如果发送前侦听成功，物理层通过空口发送所述第一协议数据单元。
所述方法还可以包括：
步骤408，如果发送前侦听失败，物理层向媒体接入控制层发送第一失败通知。
步骤409，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图5，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图5对本发明做进一步说明。
步骤501，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤502，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤503，媒体接入控制层向物理层发送第一启动指示。
步骤504，媒体接入控制层向物理层发送所述第一协议数据单元。
步骤505，物理层通过发送前侦听获取第一侦听数据。
步骤506，物理层向媒体接入控制层发送第一侦听数据。
步骤507，媒体接入控制层根据第一侦听数据及预先选定的第一发送前侦听参数判断发送前侦听是否成功。
步骤508，如果发送前侦听成功，媒体接入控制层向物理层发送第一传输指示。
步骤509，物理层在接收到第一传输指示后，通过空口发送所述第一协议数据单 元。
所述方法还可以包括：
步骤510，如果发送前侦听失败，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图6，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图6对本发明做进一步说明。
步骤601，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤602，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤603，媒体接入控制层向物理层发送第一启动指示，所述第一启动指示携带第一发送前侦听参数。
步骤604，媒体接入控制层向物理层发送所述第一协议数据单元。
步骤605，物理层通过发送前侦听获取第一侦听数据。
步骤606，物理层根据第一侦听数据及第一发送前侦听参数判断发送前侦听是否成功。
步骤607，如果发送前侦听成功，物理层通过空口发送所述第一协议数据单元。
所述方法还可以包括：
步骤608，如果发送前侦听失败，物理层向媒体接入控制层发送第一失败通知。
步骤609，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图7，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图7对本发明做进一步说明。
步骤701，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤702，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤703，媒体接入控制层向物理层发送第一启动指示。
步骤704，物理层通过发送前侦听获取第一侦听数据。
步骤705，物理层向媒体接入控制层发送第一侦听数据。
步骤706，媒体接入控制层根据第一侦听数据及预先选定的第一发送前侦听参数判断发送前侦听是否成功。
步骤707，如果发送前侦听成功，媒体接入控制层向物理层发送所述第一协议数据单元。
步骤708，物理层在接收到第一协议数据单元后，通过空口发送所述第一协议数据单元。
所述方法还可以包括：
步骤709，如果发送前侦听失败，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图8，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图8对本发明做进一步说明。
步骤801，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤802，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤803，媒体接入控制层向物理层发送第一启动指示，所述第一启动指示携带第一发送前侦听参数。
步骤804，物理层通过发送前侦听获取第一侦听数据。
步骤805，物理层根据第一侦听数据及第一发送前侦听参数判断发送前侦听是否成功。
步骤806，如果发送前侦听成功，物理层向媒体接入控制层发送第一成功通知。
步骤807，媒体接入控制层在接收到第一成功通知后，向物理层发送所述第一协议数据单元。
步骤808，物理层在接到所述第一协议数据单元后，通过空口发送所述第一协议 数据单元。
所述方法还可以包括：
步骤809，如果发送前侦听失败，物理层向媒体接入控制层发送第一失败通知。
步骤810，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图9，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图9对本发明做进一步说明。
步骤901，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤902，媒体接入控制层向物理层发送第一启动指示。
步骤903，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤904，媒体接入控制层向物理层发送所述第一协议数据单元。
步骤905，物理层通过发送前侦听获取第一侦听数据。
步骤906，物理层向媒体接入控制层发送第一侦听数据。
步骤907，媒体接入控制层根据第一侦听数据及预先选定的第一发送前侦听参数判断发送前侦听是否成功。
步骤908，如果发送前侦听成功，媒体接入控制层向物理层发送第一传输指示。
步骤909，物理层在接收到第一传输指示后，通过空口发送所述第一协议数据单元。
所述方法还可以包括：
步骤910，如果发送前侦听失败，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图10，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图10对本发明做进一步说明。
步骤1001，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤1002，媒体接入控制层向物理层发送第一启动指示，所述第一启动指示携带第一发送前侦听参数。
步骤1003，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤1004，媒体接入控制层向物理层发送所述第一协议数据单元。
步骤1005，物理层通过发送前侦听获取第一侦听数据。
步骤1006，物理层根据第一侦听数据及第一发送前侦听参数判断发送前侦听是否成功。
步骤1007，如果发送前侦听成功，物理层通过空口发送所述第一协议数据单元。
所述方法还可以包括：
步骤1008，如果发送前侦听失败，物理层向媒体接入控制层发送第一失败通知。
步骤1009，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图11，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图11对本发明做进一步说明。
步骤1101，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤1102，媒体接入控制层向物理层发送第一启动指示。
步骤1103，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤1104，物理层通过发送前侦听获取第一侦听数据。
步骤1105，物理层向媒体接入控制层发送第一侦听数据。
步骤1106，媒体接入控制层根据第一侦听数据及预先选定的第一发送前侦听参数判断发送前侦听是否成功。
步骤1107，如果发送前侦听成功，媒体接入控制层向物理层发送所述第一协议数据单元。
步骤1108，物理层在接收到第一协议数据单元之后，通过空口发送所述第一协 议数据单元。
所述方法还可以包括：
步骤1109，如果发送前侦听失败，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图12，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图12对本发明做进一步说明。
步骤1201，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤1202，媒体接入控制层向物理层发送第一启动指示，所述第一启动指示携带第一发送前侦听参数。
步骤1203，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤1204，物理层通过发送前侦听获取第一侦听数据。
步骤1205，物理层根据第一侦听数据及第一发送前侦听参数判断发送前侦听是否成功。
步骤1206，如果发送前侦听成功，物理层向媒体接入控制层发送第一成功通知。
步骤1207，媒体接入控制层在接收到第一成功通知后，向物理层发送所述第一协议数据单元。
步骤1208，物理层在在接收到第一PUD后，通过空口发送所述第一协议数据单元。
所述方法还可以包括：
步骤1209，如果发送前侦听失败，物理层向媒体接入控制层发送第一失败通知。
步骤1210，媒体接入控制层将所述第一协议数据单元中包含的待发送数据保存至无线链路控制层。
参见图13，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图13对本发明做进一步说明。
步骤1301，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入 控制层发送数据到达通知。
步骤1302，媒体接入控制层向物理层发送第一启动指示。
步骤1303，物理层通过发送前侦听获取第一侦听数据。
步骤1304，物理层向媒体接入控制层发送第一侦听数据。
步骤1305，媒体接入控制层根据第一侦听数据及预先选定的第一发送前侦听参数判断发送前侦听是否成功。
步骤1306，如果发送前侦听成功，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤1307，媒体接入控制层向物理层发送所述第一协议数据单元。
步骤1308，物理层在接收到第一协议数据单元之后，通过空口发送所述第一协议数据单元。
参见图14，为本发明基站在授权频谱辅助接入小区中的数据传输方法另一个实施例的流程示意图，下面结合图14对本发明做进一步说明。
步骤1401，线链路控制层在有待发送数据到达无线链路控制层时，向媒体接入控制层发送数据到达通知。
步骤1402，媒体接入控制层向物理层发送第一启动指示，所述第一启动指示携带第一发送前侦听参数。
步骤1403，物理层通过发送前侦听获取第一侦听数据。
步骤1404，物理层根据第一侦听数据及第一发送前侦听参数判断发送前侦听是否成功。
步骤1405，如果发送前侦听成功，物理层向媒体接入控制层发送第一成功通知。
步骤1406，媒体接入控制层在接收到第一成功通知后，媒体接入控制层根据无线链路控制层中的待发送数据构造第一协议数据单元。
步骤1407，向物理层发送所述第一协议数据单元。
步骤1408，物理层在在接收到第一PUD后，通过空口发送所述第一协议数据单元。
所述方法还可以包括：
步骤1409，如果发送前侦听失败，物理层向媒体接入控制层发送第一失败通知。
与本发明基站在授权频谱辅助接入小区中的传输方法相对应，本发明实施例还提供了一种基站，该基站可以采用如图1至图14所示的数据传输方法在授权频谱辅助接入小区中的进行数据传输。
参见图15，为本发明基站一个实施例的结构示意图。所述基站包括无线链路控制层1501、媒体接入控制层1502及物理层1503。其中，无线链路控制层1501、媒体接入控制层1502及物理层1503均可以独立的实体设备实现，或者也可以由所述基站的处理器通过执行所述基站的存储器中所存储的指令实现。其中，用于实现无线链路控制层1501的实体设备可以是负责建立移动终端和基站之间逻辑链路的设备，用于实现媒体接入控制层1502的实体设备可以是用于实现介质访问控制的设备，用于实现物理层1503的设备则可以是实现原始数据在通信通道上传输的设备。
其中，所述媒体接入控制层1502，用于向所述物理层1503发送第一启动指示，所述第一启动指示用于指示所述物理层1503启动发送前侦听；所述媒体接入控制层1502，还用于向所述物理层1503发送第一协议数据单元，所述第一协议数据单元由所述媒体接入控制层1502根据无线链路控制层1501中的待发送数据构造；所述物理层1503，用于根据所述第一启动指示启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第一协议数据单元。
可选的，所述媒体接入控制层1502，还用于在向所述物理层1503发送所述第一启动指示之前，向所述物理层1503发送所述第一协议数据单元。
可选的，所述媒体接入控制层1502，还用于在发送前侦听成功时，向所述物理层1503发送所述第一协议数据单元。
可选的，所述媒体接入控制层1502，还用于向所述物理层1503发送携带第一发送前侦听参数的第一启动指示，所述第一发送前侦听参数由所述第一协议数据单元中所包含的待发送数据的服务质量决定，包括第一仲裁侦听间隔及第一周期数窗口；或者，用于向所述物理层1503发送携带第一参数标识的第一启动指示，所述第一参数标识用于指示物理层1503使用备选发送前侦听参数中的所述第一发送前侦听参数进行发送前侦听。
可选的，所述媒体接入控制层1502，还用于在接收到所述物理层1503发送的第一成功通知后，向所述物理层1503发送第一协议数据单元；其中，所述第一成功通 知由所述物理层1503在根据所述第一发送前侦听参数及第一侦听数据判定发送前侦听成功后发送，所述第一侦听数据由所述物理层1503通过发送前侦听获得。
可选的，所述媒体接入控制层1502，还用于在向所述物理层1503发送所述第一启动指示之后，接收所述物理层1503上报的第一侦听数据，所述第一侦听数据由所述物理层1503通过发送前侦听获得；根据第一发送前侦听参数及所述第一侦听数据确定所述发送前侦听是否成功；在确定所述发送前侦听成功后，向所述控制层发送所述第一协议数据单元。
可选的，所述媒体接入控制层1502，还用于在周期计数器由第一初始值递减为0时，根据所述第一侦听数据判断所述基站的空口的信号强度是否低于预定阈值，其中所述第一初始值为所述媒体接入控制层1502从所述第一周期数窗口中选择的随机值；当所述空口的信号强度低于预定阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第一仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第一仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第一仲裁侦听间隔，则判定发送前侦听失败。
可选的，所述媒体接入控制层1502，还用于向所述物理层1503发送第一传输指示，所述第一传输指示用于指示所述物理层1503发送所述第一协议数据单元。
可选的，所述媒体接入控制层1502，还用于在发送前侦听失败后，将所述第一协议数据单元中所包含的待发送数据保存至所述无线链路控制层1501。
可选的，所述媒体接入控制层1502，还用于在所述第一协议数据单元所包含的数据被基站通过普通小区发送，且所述无线链路控制层1501中仍存在待发送数据时，向所述物理层1503发送第二启动指示，所述第二启动指示用于指示所述物理层1503再次启动发送前侦听；所述媒体接入控制层1502，还用于向所述物理层1503发送第二协议数据单元，所述第二协议数据单元由所述媒体接入控制层1502根据所述无线链路控制层1501中的待发送数据构造；所述物理层1503，还用于根据所述第二启动指示再次启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第二协议数据单元。
可选的，所述媒体接入控制层1502，还用于接收所述物理层1503上报的第二侦听数据，所述第二侦听数据由所述物理层1503通过发送前侦听获得；根据第二发送前侦听参数及第二侦听数据判定发送前侦听是否成功，所述第二发送前侦听参数由所述第二协议数据单元中所包含待发送数据的服务质量决定，包括第二仲裁侦听间隔及 第二周期数窗口；在发送前侦听成功后，向所述控制层发送所述第二协议数据单元。
可选的，所述媒体接入控制层1502，还用于在周期计数器由目标值递减为0时，根据所述第二侦听数据判断所述空口的信号强度是否低于预定阈值，其中，所述目标值为第二计数值与已递减值之差，所述第二初始值为所述媒体接入控制层1502从所述第二周期数窗口中选择的随机值，所述已递减值为所述媒体接入控制层1502向物理层1503发送第一启动指示至所述第一协议数据单元所包含的数据被基站通过普通小区发送所经过的周期数；当所述空口的信号强度低于预定阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第二仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第二仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第二仲裁侦听间隔，则判定发送前侦听失败。
可选的，所述媒体接入控制层1502，还用于在向物理层1503发送第一启动指示之前构造所述第一协议数据单元；或者，还用于在向物理层1503发送第一启动指示之后构造所述第一协议数据单元。
可选的，所述媒体接入控制层1502，还用于在发送前侦听成功后构造所述第一协议数据单元。
可选的，所述物理层1503，还用于在周期计数器由第一初始值递减为0时，根据所述第一侦听数据判断所述基站的空口的信号强度是否低于预定阈值，其中所述第一初始值为所述媒体接入控制层1502从所述第一周期数窗口中选择的随机值；当所述空口的信号强度低于预定阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第一仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第一仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第一仲裁侦听间隔，则判定发送前侦听失败。
可选的，所述物理层1503，还用于在判定发送前侦听成功后向媒体接入控制层1502发送第一成功指示，或者，在判定发送前侦听失败后向媒体接入控制层1502发送第一失败指示。
可选的，所述物理层1503，还用于在周期计数器由目标值递减为0时，根据所述第二侦听数据判断所述空口的信号强度是否低于预定阈值，其中，所述目标值为第二计数值与已递减值之差，所述第二初始值为所述媒体接入控制层1502从所述第二周期数窗口中选择的随机值，所述已递减值为所述媒体接入控制层1502向物理层 1503发送第一启动指示至所述第一协议数据单元所包含的数据被基站通过普通小区发送所经过的周期数；当所述空口的信号强度低于预定阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第二仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第二仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第二仲裁侦听间隔，则判定发送前侦听失败。
可选的，所述物理层1503，还用于在判定发送前侦听成功后向媒体接入控制层1502发送第二成功指示，或者，在判定发送前侦听失败后向媒体接入控制层1502发送第二失败指示。
采用实施例所提供的基站可以在授权频谱辅助接入小区中与WiFi设备进行无线资源竞争，并在竞争到无线资源后进行数据传输。
参见图16，为本发明基站另一个实施例的结构示意图。
如图16所示，所述基站包括处理器、存储器及数据收发单元，
其中，所述处理器用于执行所述存储器中存储的应用程序，
具体实现中，本发明还提供一种计算机存储介质，其中，该计算机存储介质可存储有程序，该程序执行时可包括本发明提供的数据传输方法各实施例中的部分或全部步骤。的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
本领域的技术人员可以清楚地了解到本发明实施例中的技术可借助软件加必需的通用硬件平台的方式来实现。基于这样的理解，本发明实施例中的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例或者实施例的某些部分的方法。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于装置、服务器、系统实施例而言，由于其基本相似于方法实施例，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。
以上的本发明实施方式，并不构成对本发明保护范围的限定。任何在本发明的 精神和原则之内所作的修改、等同替换和改进等，均应包含在本发明的保护范围之内。

Claims (28)

  1. 一种基站在授权频谱辅助接入小区中的传输方法，所述基站包括媒体接入控制层及物理层，其特征在于，所述方法包括：
    所述媒体接入控制层向所述物理层发送第一启动指示，所述第一启动指示用于指示所述物理层启动发送前侦听；
    所述媒体接入控制层向所述物理层发送第一协议数据单元，所述第一协议数据单元由所述媒体接入控制层根据无线链路控制层中的待发送数据构造；
    所述物理层根据所述第一启动指示启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第一协议数据单元。
  2. 如权利要求1所述的方法，其特征在于，所述媒体接入控制层向所述物理层发送第一协议数据单元包括：
    在向所述物理层发送所述第一启动指示之前，所述媒体接入控制层向所述物理层发送所述第一协议数据单元。
  3. 如权利要求1所述的方法，其特征在于，所述媒体接入控制层向所述物理层发送第一协议数据单元包括：
    若发送前侦听成功，所述媒体接入控制层向所述物理层发送所述第一协议数据单元。
  4. 如权利要求3所述的方法，其特征在于，所述媒体接入控制层向所述物理层发送第一启动指示包括：
    所述媒体接入控制层向所述物理层发送携带第一发送前侦听参数的第一启动指示，所述第一发送前侦听参数由所述第一协议数据单元中所包含的待发送数据的服务质量决定，包括第一仲裁侦听间隔及第一周期数窗口；或者，
    所述媒体接入控制层向所述物理层发送携带第一参数标识的第一启动指示，所述第一参数标识用于指示备选参数中的所述第一发送前侦听参数。
  5. 如权利要求4所述的方法，其特征在于，在向所述物理层发送所述第一启动指示之后，若发送前侦听成功，则所述媒体接入控制层向所述物理层发送第一协议数据单元包括：
    在接收到所述物理层发送的第一成功通知后，所述媒体接入控制层向所述物理层发送第一协议数据单元；其中，所述第一成功通知由所述物理层在根据所述第一发送前侦听参数及第一侦听数据判定发送前侦听成功后发送，所述第一侦听数据由所述物理层通过发送前侦听获得。
  6. 如权利要求3所述的方法，其特征在于，若发送前侦听成功，则所述媒体接入控制层向所述物理层发送所述第一协议数据单元，包括：
    在向所述物理层发送所述第一启动指示之后，所述媒体接入控制层接收所述物理层上报的第一侦听数据，所述第一侦听数据由所述物理层通过发送前侦听获得；
    所述媒体接入控制层根据第一发送前侦听参数及所述第一侦听数据确定所述发送前侦听是否成功；
    在确定所述发送前侦听成功后，所述媒体接入控制层向所述控制层发送所述第一协议数据单元。
  7. 如权利要求6所述的方法，其特征在于，所述媒体接入控制层根据第一发送前侦听参数及所述第一侦听数据判定发送前侦听是否成功，包括：
    所述媒体接入控制层在周期计数器由第一初始值递减为0时，根据所述第一侦听数据判断所述基站的空口的信号强度是否低于预定阈值，其中所述第一初始值为所述媒体接入控制层从所述第一周期数窗口中选择的随机值；
    当所述空口的信号强度低于预定阈值时，所述媒体接入控制层检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第一仲裁侦听间隔；
    若所述空口的信号强度低于预定阈值且持续的时长超过第一仲裁侦听间隔，则判定发送前侦听成功；
    若所述空口的信号强度低于预定阈值但持续的时长未超过第一仲裁侦听间隔，则判定发送前侦听失败。
  8. 如权利要求1至3任一项所述的方法，其特征在于，在所述媒体接入控制层向所述物理层发送第一协议数据单元之后，还包括：
    若发送前侦听成功，则所述媒体接入控制层向所述物理层发送第一传输指示，所述第一传输指示用于指示所述物理层发送所述第一协议数据单元。
  9. 如权利要求1至3任一项所述的方法，其特征在于，所述方法还包括：
    若发送前侦听失败，所述媒体接入控制层将所述第一协议数据单元中所包含的待发送数据保存至所述无线链路控制层。
  10. 如权利要求1至3任一项所述的方法，其特征在于，所述方法还包括：
    若在发送前侦听成功前，所述第一协议数据单元所包含的数据被基站通过普通小区发送，且所述无线链路控制层中仍存在待发送数据，所述媒体接入控制层向所述物理层发送第二启动指示，所述第二启动指示用于指示所述物理层再次启动发送前侦听；
    所述媒体接入控制层向所述物理层发送第二协议数据单元，所述第二协议数据单元由所述媒体接入控制层根据所述无线链路控制层中的待发送数据构造；
    所述物理层根据所述第二启动指示再次启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第二协议数据单元。
  11. 如权利要求10所述的方法，其特征在于，所述媒体接入控制层向所述物理层发送第二协议数据单元包括：
    所述媒体接入控制层接收所述物理层上报的第二侦听数据，所述第二侦听数据由所述物理层通过发送前侦听获得；
    所述媒体接入控制层根据第二发送前侦听参数及第二侦听数据判定发送前侦听是否成功，所述第二发送前侦听参数由所述第二协议数据单元中所包含待发送数据的服务质量决定，包括第二仲裁侦听间隔及第二周期数窗口；
    在发送前侦听成功后，所述媒体接入控制层向所述控制层发送所述第二协议数据单元。
  12. 如权利要求11所述的方法，其特征在于，所述媒体接入控制层根据第二发送前侦听参数及所述第二侦听数据判定发送前侦听是否成功包括：
    所述媒体接入控制层在周期计数器由目标值递减为0时，根据所述第二侦听数据判断所述空口的信号强度是否低于预定阈值，其中，所述目标值为第二计数值与已递减值之差，所述第二初始值为所述媒体接入控制层从所述第二周期数窗口中选择的随机值，所述已递减值为所述媒体接入控制层向物理层发送第一启动指示至所述第一协议数据单元所包含的数据被基站通过普通小区发送所经过的周期数；
    当所述空口的信号强度低于预定阈值时，所述媒体接入控制层检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第二仲裁侦听间隔；
    若所述空口的信号强度低于预定阈值且持续的时长超过第二仲裁侦听间隔，则判定发送前侦听成功；
    若所述空口的信号强度低于预定阈值但持续的时长未超过第二仲裁侦听间隔，则判定发送前侦听失败。
  13. 如权利要求1所述的方法，其特征在于，
    所述第一协议数据单元由所述媒体接入控制层在向物理层发送第一启动指示之前构造；或者，
    所述第一协议数据单元由所述媒体接入控制层在向物理层发送第一启动指示之后构造。
  14. 如权利要求3所述的方法，其特征在于，
    所述第一协议数据单元由所述媒体接入控制层在发送前侦听成功后构造。
  15. 一种基站，其特征在于，包括无线链路控制层、媒体接入控制层及物理层，
    所述媒体接入控制层，用于向所述物理层发送第一启动指示，所述第一启动指示用于指示所述物理层启动发送前侦听；
    所述媒体接入控制层，还用于向所述物理层发送第一协议数据单元，所述第一协议数据单元由所述媒体接入控制层根据无线链路控制层中的待发送数据构造；
    所述物理层，用于根据所述第一启动指示启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第一协议数据单元。
  16. 如权利要求15所述的基站，其特征在于，
    所述媒体接入控制层，还用于在向所述物理层发送所述第一启动指示之前，向所述物理层发送所述第一协议数据单元。
  17. 如权利要求15所述的基站，其特征在于，
    所述媒体接入控制层，还用于在发送前侦听成功时，向所述物理层发送所述 第一协议数据单元。
  18. 如权利要求15所述的基站，其特征在于，
    所述媒体接入控制层，还用于向所述物理层发送携带第一发送前侦听参数的第一启动指示，所述第一发送前侦听参数由所述第一协议数据单元中所包含的待发送数据的服务质量决定，包括第一仲裁侦听间隔及第一周期数窗口；或者，
    用于向所述物理层发送携带第一参数标识的第一启动指示，所述第一参数标识用于指示物理层使用备选发送前侦听参数中的所述第一发送前侦听参数进行发送前侦听。
  19. 如权利要求18所述的基站，其特征在于，
    所述媒体接入控制层，还用于在接收到所述物理层发送的第一成功通知后，向所述物理层发送第一协议数据单元；其中，所述第一成功通知由所述物理层在根据所述第一发送前侦听参数及第一侦听数据判定发送前侦听成功后发送，所述第一侦听数据由所述物理层通过发送前侦听获得。
  20. 如权利要求17所述的基站，其特征在于，
    所述媒体接入控制层，还用于在向所述物理层发送所述第一启动指示之后，接收所述物理层上报的第一侦听数据，所述第一侦听数据由所述物理层通过发送前侦听获得；根据第一发送前侦听参数及所述第一侦听数据确定所述发送前侦听是否成功；在确定所述发送前侦听成功后，向所述控制层发送所述第一协议数据单元。
  21. 如权利要求20所述的基站，其特征在于，
    所述媒体接入控制层，还用于在周期计数器由第一初始值递减为0时，根据所述第一侦听数据判断所述基站的空口的信号强度是否低于预定阈值，其中所述第一初始值为所述媒体接入控制层从所述第一周期数窗口中选择的随机值；当所述空口的信号强度低于预定阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第一仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第一仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第一仲裁侦听间隔，则判定发送前侦听失败。
  22. 如权利要求15至17任一项所述的基站，其特征在于，
    所述媒体接入控制层，还用于向所述物理层发送第一传输指示，所述第一传输指示用于指示所述物理层发送所述第一协议数据单元。
  23. 如权利要求15至17任一项所述的基站，其特征在于，
    所述媒体接入控制层，还用于在发送前侦听失败后，将所述第一协议数据单元中所包含的待发送数据保存至所述无线链路控制层。
  24. 如权利要求15至17任一项所述的基站，其特征在于，
    所述媒体接入控制层，还用于在所述第一协议数据单元所包含的数据被基站通过普通小区发送，且所述无线链路控制层中仍存在待发送数据时，向所述物理层发送第二启动指示，所述第二启动指示用于指示所述物理层再次启动发送前侦听；
    所述媒体接入控制层，还用于向所述物理层发送第二协议数据单元，所述第二协议数据单元由所述媒体接入控制层根据所述无线链路控制层中的待发送数据构造；
    所述物理层，还用于根据所述第二启动指示再次启动发送前侦听，并在发送前侦听成功后，通过授权频谱辅助接入小区发送所述第二协议数据单元。
  25. 如权利要求24所述的基站，其特征在于，
    所述媒体接入控制层，还用于接收所述物理层上报的第二侦听数据，所述第二侦听数据由所述物理层通过发送前侦听获得；根据第二发送前侦听参数及第二侦听数据判定发送前侦听是否成功，所述第二发送前侦听参数由所述第二协议数据单元中所包含待发送数据的服务质量决定，包括第二仲裁侦听间隔及第二周期数窗口；在发送前侦听成功后，向所述控制层发送所述第二协议数据单元。
  26. 如权利要求25所述的基站，其特征在于，
    所述媒体接入控制层，还用于在周期计数器由目标值递减为0时，根据所述第二侦听数据判断所述空口的信号强度是否低于预定阈值，其中，所述目标值为第二计数值与已递减值之差，所述第二初始值为所述媒体接入控制层从所述第二周期数窗口中选择的随机值，所述已递减值为所述媒体接入控制层向物理层发送 第一启动指示至所述第一协议数据单元所包含的数据被基站通过普通小区发送所经过的周期数；当所述空口的信号强度低于预定阈值时，检测所述空口的信号强度低于预定阈值所持续的时长是否已超过第二仲裁侦听间隔；若所述空口的信号强度低于预定阈值且持续的时长超过第二仲裁侦听间隔，则判定发送前侦听成功；若所述空口的信号强度低于预定阈值但持续的时长未超过第二仲裁侦听间隔，则判定发送前侦听失败。
  27. 如权利要求15所述的基站，其特征在于，
    所述媒体接入控制层，还用于在向物理层发送第一启动指示之前构造所述第一协议数据单元；或者，还用于在向物理层发送第一启动指示之后构造所述第一协议数据单元。
  28. 如权利要求17所述的基站，其特征在于，
    所述媒体接入控制层，还用于在发送前侦听成功后构造所述第一协议数据单元。
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