WO2017028032A1

WO2017028032A1 - Data transmission method for base station in licensed-assisted access cell and base station

Info

Publication number: WO2017028032A1
Application number: PCT/CN2015/087036
Authority: WO
Inventors: 黄曲芳; 张健; 郭轶
Original assignee: 华为技术有限公司
Priority date: 2015-08-14
Filing date: 2015-08-14
Publication date: 2017-02-23
Also published as: CN107079520A

Abstract

Provided are a data transmission method for a base station in a licensed-assisted access cell and a base station. The base station comprises a media access control layer and a physical layer. The method comprises: the media access control layer sending a first starting instruction to the physical layer, wherein the first starting instruction is used to instruct the physical layer to start pre-sending monitoring; the media access control layer sending a first protocol data unit to the physical layer, wherein the first protocol data unit is constructed by the media access control layer according to data to be sent in a radio link control layer; and the physical layer starting pre-sending monitoring according to the first starting instruction, and after the pre-sending monitoring is successful, sending the first protocol data unit via a licensed-assisted access cell. By means of the base station and the data transmission method provided in the present application, the base station can compete with a WiFi device in a licensed-assisted access cell for radio resources, and performs data transmission after the radio resources are obtained through competition.

Description

Data transmission method and base station of base station in authorized spectrum auxiliary access cell

Technical field

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.

Background technique

In order to alleviate the shortage of spectrum resources, 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, and the licensed spectrum auxiliary access cell refers to a cellular mobile in a Wireless Fidelity (WiFi) frequency band. 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.

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. When 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. When 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.

Therefore, 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.

Summary of the invention

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.

In a first aspect, 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.

With reference to the first aspect, in a first possible implementation manner of the first aspect, 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.

With reference to the first aspect, in a first possible implementation manner of the first aspect, 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.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, 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.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, after the sending the first startup indication to the physical layer, if the pre-transmission listening is successful, 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.

With the second possible implementation of the first aspect, in a fifth possible implementation manner of the first aspect, 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.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, 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.

With reference to the first aspect, or any one of the first to the second possible implementation manners of the first aspect, in the seventh possible implementation manner of the first aspect, 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.

With reference to the first aspect, or any one of the first to the second possible implementation manners of the first aspect, in the eighth possible implementation manner of the first aspect, 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.

With reference to the first aspect, or any one of the first to the second possible implementation manners of the first aspect, in the ninth possible implementation manner of the first aspect, 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.

With reference to the ninth possible implementation manner of the first aspect, in a tenth possible implementation manner of the first aspect, 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.

With reference to the tenth possible implementation manner of the first aspect, in the eleventh possible implementation manner of the first aspect, 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, and the second initial value is a random value selected by the medium access control layer from the second period number window, and 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.

With reference to the first aspect, in a twelfth possible implementation manner of the first aspect, 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.

With reference to the third possible implementation manner of the first aspect, in a thirteenth possible implementation manner of the first aspect, the first protocol data unit is configured by the media access control layer to be successfully detected before being sent.

In a second aspect, 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.

With reference to the second aspect, in a first possible implementation manner of the second aspect, 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.

With reference to the second aspect, in a first possible implementation manner of the second aspect, 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 .

With the second possible implementation of the second aspect, in a third possible implementation manner of the second aspect, 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.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, 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.

With the second possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, 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.

With reference to the fifth possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, 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 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 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.

With reference to the second aspect, or any one of the first to the second possible implementation manners of the second aspect, in the seventh possible implementation manner of the second aspect, 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.

With reference to the second aspect, or any one of the first to the second possible implementation manners of the second aspect, in the eighth possible implementation manner of the second aspect, 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.

With reference to the second aspect, or any one of the first to the second possible implementation manners of the second aspect, in the ninth possible implementation manner of the second aspect, 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. Instructing the physical layer to start pre-transmission listening again; 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 According to the to-be-transmitted data structure in the radio link 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.

With reference to the ninth possible implementation manner of the second aspect, in a tenth possible implementation manner of the second aspect, 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. a random value selected from the second period number window, 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.

With reference to the tenth possible implementation manner of the second aspect, in the eleventh possible implementation manner of the second aspect,

With reference to the second aspect, in a twelfth possible implementation manner of the second aspect, 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.

With reference to the third possible implementation of the second aspect, in a thirteenth possible implementation manner of the second aspect, the media access control layer is further configured to construct the first protocol after the monitoring is successful before sending Data unit.

In the embodiment of the present invention, 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.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it will be apparent to those skilled in the art that In other words, other drawings can be obtained based on these drawings without paying for creative labor.

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;

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;

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;

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;

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;

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;

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;

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;

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;

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;

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;

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;

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;

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.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the drawings in the embodiments of the present invention. Some embodiments, rather than all of the embodiments, are invented. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that, in the embodiment of 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, and the pre-sending listening failure means that the network device fails to compete for the radio resource by sending the pre-sent.

It should be noted that, in the embodiment of the present invention, 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. The Protocol Data Unit (PDU) generated by the MAC layer is also commonly referred to as a MAC PDU.

If there is no special description, 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.

Before the first start indication is sent to the physical layer, 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.

In order to enable the physical layer to determine whether the pre-transmission listening is successful, 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. Alternatively, 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. Alternatively, 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.

When the media access control layer determines whether the pre-transmission listening is successful, 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:

Determining, according to the first interception data, whether the signal strength of the air interface is lower than a predetermined threshold, where the first initial value is the media access control layer from the first initial value. a random value selected in the first period number window; 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 has exceeded the first arbitration listening interval . If the period counter is decremented from the first initial value to 0, the signal strength of the air interface is lower than a predetermined threshold and the duration of time after the duration exceeds the first arbitration listening interval, it is determined that the pre-transmission listening is successful. If 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.

When it is determined by the physical layer whether the pre-transmission listening is successful, 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.

If the pre-transmission listener fails, 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.

If the media access control layer sends the first protocol data unit to the physical layer before the transmission is successful, and the media access control layer determines whether the pre-transmission listening is successful, then the interception is successful before the transmission. 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.

If 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.

In actual use, 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.

When the physical layer determines whether the pre-transmission listening is successful, 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.

It should be noted that 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.

In this embodiment, 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. With the method provided in this embodiment, 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.

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.

Similar to the first start indication, before the second start indication is sent to the physical layer, 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.

Similarly, in order to enable the physical layer to determine whether the pre-transmission listening is successful, 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.

Similar to the manner in which the medium access control layer sends the first start indication and the first protocol data unit to the physical layer, 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. Specifically, 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.

In order to fully utilize the data transmission capability of the licensed spectrum to assist the access cell, 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.

And determining, according to the second interception data, whether the signal strength of the air interface is lower than a predetermined threshold, where the target value is a difference between the second count value and the decremented value, where the period counter is decremented to 0 by the target value. 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.

If 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.

When the physical layer determines whether the pre-transmission listening 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.

Similarly, if the media access control layer sends the second protocol data unit to the physical layer before the transmission is successful, and the media access control layer determines whether the pre-transmission listening is successful, the interception is successful before sending. 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. After receiving the second transmission indication, the physical layer may send the second protocol data unit according to the air interface directly accessing the cell through the authorized spectrum.

If 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.

It should be noted that, before the LBT succeeds, the data included in the second data unit is also sent by the base station through the LTE cell, and the buffer of the line link control layer still exists in the buffer. Sending data, 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.

With the method provided in this embodiment, 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.

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.

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.

Referring to 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.

Corresponding to the transmission method of the base station in the licensed spectrum assisted access cell of the present invention, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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. .

Optionally, 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.

Optionally, 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.

Optionally, 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.

Optionally, 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, and 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 At 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 a predetermined threshold and the duration exceeds the second arbitration 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 does not exceed the second arbitration listening interval, it is determined that the pre-transmission listening fails.

Optionally, 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.

Optionally, the media access control layer 1502 is further configured to construct the first protocol data unit after the monitoring is successful before sending.

Optionally, 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.

Optionally, 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.

Optionally, 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. Whether 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.

Optionally, 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.

As shown in FIG. 16, the base station includes a processor, a memory, and a data transceiver unit.

Wherein the processor is configured to execute an application stored in the memory,

In a specific implementation, 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).

It will be apparent to those skilled in the art that 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.

The various embodiments in the specification are described in a progressive manner, and the same or similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the device, the server, and the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiment.

The above embodiments of the present invention are not intended to limit the scope of the present invention. Anything in the invention Modifications, equivalent substitutions and improvements made within the spirit and principles are intended to be included within the scope of the invention.

Claims

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, where the method includes:

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;

Transmitting, by the medium access control layer, 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 physical layer starts the pre-transmission interception according to the first start indication, and sends the first protocol data unit by granting the spectrum assisted access cell after the interception is successful before the sending.
The method according to claim 1, wherein the sending, by the medium access control layer, the first protocol data unit to the physical layer comprises:

The medium access control layer sends the first protocol data unit to the physical layer before transmitting the first initiation indication to the physical layer.
The method according to claim 1, wherein the sending, by the medium access control layer, the first protocol data unit to the physical layer comprises:

If the pre-transmission listening is successful, the media access control layer sends the first protocol data unit to the physical layer.
The method according to claim 3, wherein the sending, by the medium access control layer, the first start indication to the physical layer comprises:

The medium access control layer sends, to the physical layer, a first initiation indication that carries a first pre-transmission listening parameter, where the first pre-transmission listening parameter is to be sent by the first protocol data unit. The quality of service of the data is determined, including the first arbitration listening interval and the first cycle number window; or

The medium access control layer sends a first start indication that carries the first parameter identifier to the physical layer, where the first parameter identifier is used to indicate the first pre-transmission listening parameter in the candidate parameter.
The method according to claim 4, wherein, after transmitting the first activation indication to the physical layer, if the pre-transmission listening is successful, the media access control layer sends the physical layer to the physical layer. A protocol data unit includes:

After receiving the first success notification sent by the physical layer, the media access control layer sends a first protocol data unit to the physical layer; wherein the first success notification is performed by the physical layer according to the The first pre-transmission listening parameter and the first interception data are sent after the pre-transmission hearing is successful, and the first interception data is obtained by the physical layer by detecting before sending.
The method of claim 3, wherein the media access control layer sends the first protocol data unit to the physical layer, if the pre-transmission is successful, comprising:

After the first initiation indication is sent to the physical layer, the media access control layer receives the first interception data reported by the physical layer, where the first interception data is sent by the physical layer before being sent by the physical layer. Listening for;

Determining, by the medium access control layer, whether the pre-transmission listening is successful according to the first pre-transmission listening parameter and the first interception data;

After determining that the pre-transmission listening is successful, the media access control layer sends the first protocol data unit to the control layer.
The method according to claim 6, wherein the media access control layer determines whether the pre-transmission listening is successful according to the first pre-transmission listening parameter and the first interception data, including:

And determining, by the medium access control layer, whether the signal strength of the air interface of the base station is lower than a predetermined threshold according to the first interception data, where the period counter is decremented from 0 by a first initial value, where 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 medium access control layer detects whether the duration of the signal strength of the air interface is lower 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, determining 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 first arbitration listening interval, it is determined that the pre-transmission hearing fails.
The method according to any one of claims 1 to 3, further comprising: after the medium access control layer sends the first protocol data unit to the physical layer,

If the pre-transmission is successful, the media access control layer sends 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.
The method according to any one of claims 1 to 3, further comprising:

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.
The method according to any one of claims 1 to 3, further comprising:

If the data included in the first 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, the medium access control layer The physical layer sends a second start indication, where the second start indication is used to instruct the physical layer to start pre-transmission listening again;

The medium access control layer sends a second protocol data unit to the physical layer, where the second protocol data unit is configured by the medium access control layer according to the to-be-sent data in the radio link control layer;

The physical layer starts the pre-transmission listening again according to the second initiation indication, and sends the second protocol data unit by granting the spectrum-assisted access cell after the detection is successful before the transmission.
The method according to claim 10, wherein the sending, by the medium access control layer, the second protocol data unit to the physical layer comprises:

Receiving, by the medium access control layer, the second interception data reported by the physical layer, where the second interception data is obtained by the physical layer by detecting before sending;

The medium access control layer determines 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 included in the second protocol data unit. The quality of service of the transmitted data is determined, including a second arbitration listening interval and a second cycle number window;

After the interception is successful, the media access control layer sends the second protocol data unit to the control layer.
The method according to claim 11, wherein the media access control layer determines whether the pre-transmission listening is successful according to the second pre-transmission listening parameter and the second interception data, including:

The medium access control layer determines, according to the second interception data, whether the signal strength of the air interface is lower than a predetermined threshold, where the target value is the second count value, when the period counter is decremented to 0. 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 the physical access control layer to the physical Transmitting, by the layer, a first start indication to a 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 lower than a predetermined threshold, the medium access control layer detects whether the duration of the signal strength of the air interface is lower than a predetermined threshold has exceeded the second arbitration listening interval;

If the signal strength of the air interface is lower than a predetermined threshold and the duration exceeds the second arbitration listening interval, determining 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 method of claim 1 wherein

The first protocol data unit is configured by the medium access control layer before transmitting a first start indication to the physical layer; or

The first protocol data unit is constructed by the medium access control layer after transmitting a first initiation indication to the physical layer.
The method of claim 3 wherein:

The first protocol data unit is constructed by the media access control layer after successful listening before sending.
A base station, comprising: a radio link control layer, a medium access control layer, and a physical layer,

The medium access control layer is configured to send 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 is further configured to send, 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 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 base station according to claim 15, wherein

The medium access control layer is further configured to send the first protocol data unit to the physical layer before sending the first start indication to the physical layer.
The base station according to claim 15, wherein

The medium access control layer is further configured to send the foregoing to the physical layer when the monitoring is successful before sending The first protocol data unit.
The base station according to claim 15, wherein

The medium access control layer is further configured to send, to the physical layer, a first start indication that carries a first pre-transmission listening parameter, where the first pre-transmission listening parameter is used by the first protocol data unit. The quality of service of the data to be transmitted is determined, including the first arbitration listening interval and the 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.
A base station according to claim 18, wherein

The medium access control layer is further configured to: after receiving the first success notification sent by the physical layer, send the first protocol data unit to the physical layer; wherein the first success notification is by the physical The layer is sent after the first pre-transmission listening parameter and the first interception data are determined to be successful before the sending, and the first listening data is obtained by the physical layer by sending the pre-transmission.
The base station according to claim 17, wherein

The medium access control layer is further configured to: after sending the first start indication to the physical layer, receive the first interception data reported by the physical layer, where the first interception data is from the physical The layer is obtained by the pre-transmission interception; determining, according to the first pre-transmission listening parameter and the first interception data, whether the pre-transmission listening is successful; and after determining that the pre-transmission listening is successful, to the control layer Sending the first protocol data unit.
A base station according to claim 20, wherein

The medium access control layer is further configured to: 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, when the period counter is decremented to 0 by using a first initial value, where The first initial value is a random value selected by the media access control layer 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 lower than a predetermined threshold Whether the duration of the duration 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, it is determined that the interception is successful before sending; if the air interface is If the signal strength is below a predetermined threshold but the duration does not exceed the first arbitration listening interval, then the pre-transmission listening failure is determined.
A base station according to any one of claims 15 to 17, wherein

The medium access control layer is further configured to 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.
A base station according to any one of claims 15 to 17, wherein

The media access control layer is further configured to save the to-be-sent data included in the first protocol data unit to the radio link control layer after the pre-transmission listening failure.
A base station according to any one of claims 15 to 17, wherein

The media access control layer is further configured to: when 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, to the physical The layer sends a second start indication, where the second start indication is used to instruct the physical layer to start pre-transmission listening again;

The medium access control layer is further configured to send, to the physical layer, a second protocol data unit, where the second protocol data unit is sent by the media access control layer according to the radio link control layer. Data construction

The physical layer is further configured to start the pre-transmission listening again according to the second activation indication, and send the second protocol data unit by using the licensed spectrum auxiliary access cell after the monitoring is successful before the sending.
A base station according to claim 24, wherein

The medium access control layer is further configured to receive second interception data reported by the physical layer, where the second interception data is obtained by the physical layer by sending a pre-transmission; and listening according to the second sending The parameter and the second interception data determine 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 a second period number window; after the monitoring is successful before sending, sending the second protocol data unit to the control layer.
A base station according to claim 25, wherein

The medium access control layer is further configured to determine, according to the second interception data, whether the signal strength of the air interface is lower than a predetermined threshold, where the target value is lower than a predetermined threshold, where the target value is a difference between the second count value and the decremented value, the second initial value is a random value selected by the medium access control layer from the second period number window, and the decremented value is the media access The control layer sends to the physical layer The first start indication indicates that the data included in the first protocol data unit is transmitted by the base station through the normal cell; when the signal strength of the air interface is lower than a predetermined threshold, detecting that the signal strength of the air interface is lower than Whether the duration of 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 pre-transmission is successful; 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, it is determined that the pre-transmission hearing fails.
The base station according to claim 15, wherein

The medium access control layer is further configured to construct the first protocol data unit before sending a first start indication to the physical layer; or, further, to construct the first after sending the first start indication to the physical layer Protocol data unit.
The base station according to claim 17, wherein

The medium access control layer is further configured to construct the first protocol data unit after the monitoring is successful before sending.