WO2016112508A1 - 一种数据传输方法及装置 - Google Patents

一种数据传输方法及装置 Download PDF

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Publication number
WO2016112508A1
WO2016112508A1 PCT/CN2015/070732 CN2015070732W WO2016112508A1 WO 2016112508 A1 WO2016112508 A1 WO 2016112508A1 CN 2015070732 W CN2015070732 W CN 2015070732W WO 2016112508 A1 WO2016112508 A1 WO 2016112508A1
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WIPO (PCT)
Prior art keywords
channel
unlicensed spectrum
cca detection
detection time
data
Prior art date
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Ceased
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PCT/CN2015/070732
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English (en)
French (fr)
Inventor
王达
王键
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201580066288.5A priority Critical patent/CN107005862B/zh
Priority to PCT/CN2015/070732 priority patent/WO2016112508A1/zh
Priority to EP15877427.3A priority patent/EP3240323B1/en
Priority to US15/544,218 priority patent/US10405346B2/en
Publication of WO2016112508A1 publication Critical patent/WO2016112508A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0825—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance

Definitions

  • the present invention relates to the field of communications, and in particular, to a data transmission method and apparatus.
  • LAA-LTE Long Term Evolution Unlicensed Spectrum
  • LBT is a carrier sense multiple access (English full name: Carrier Sense Multiple Access, English abbreviation: CSMA) technology
  • LBT technology working mode includes load based (English full name: Load Based Equipment, English abbreviation: LBE) working mode and Based on the working mode of the frame (English full name: Frame Based Equipment, English abbreviation: FBE).
  • the device can transmit data using the working mode of the LBE, or the working mode of the FBE, or the mixed working mode of the working mode of the LBE and the operating mode of the FBE.
  • the device in the LAA-LTE system uses the above-mentioned LBT mode to transmit data by using an unlicensed spectrum
  • Wireless Fidelity English name: WiFi
  • Embodiments of the present invention provide a data transmission method and apparatus, which are capable of After the device in the LAA-LTE system collides with the unlicensed spectrum, it effectively reduces the probability of collision.
  • a data transmission method including:
  • the first device adjusts the CCA detection time or the number of detection times of the idle channel of the channel of the unlicensed spectrum after colliding with other devices when determining channel transmission data occupying the unlicensed spectrum;
  • the first device estimates, according to the adjusted idle channel of the unlicensed spectrum channel, the CCA detection time or the number of detections to occupy the channel transmission data of the unlicensed spectrum.
  • the determining, by the first device, the idle channel of the unlicensed spectrum, the CCA detection time or the number of detections includes:
  • the first device randomly adjusts an idle channel of the channel of the unlicensed spectrum to evaluate a CCA detection time or a number of detections.
  • the first device adjusts the idle channel assessment CCA detection time of the channel of the unlicensed spectrum, including:
  • the first device adjusts an idle channel assessment CCA detection time of the channel of the unlicensed spectrum by increasing or decreasing a data frame length.
  • the first device adjusts the idle channel assessment CCA detection time of the channel of the unlicensed spectrum, including:
  • the first device delays an idle channel of the channel of the unlicensed spectrum to evaluate a CCA detection time.
  • the first device adjusting the idle channel assessment CCA detection time of the channel of the unlicensed spectrum includes:
  • the first device adjusts the idle channel assessment CCA detection time of the channel of the unlicensed spectrum by increasing or decreasing the idle channel evaluation CCA detection interval.
  • the determining, by the first device, the number of idle channel assessment CCA detections of the channel of the unlicensed spectrum includes:
  • the first device increases or decreases the number of idle channel assessment CCA detections of the channel of the unlicensed spectrum.
  • the method before the first device increases or decreases the number of idle channel assessment CCA detections of the channel of the unlicensed spectrum, the method further includes:
  • the first device delays an idle channel of the channel of the unlicensed spectrum to evaluate a CCA detection time.
  • the first device determines that the channel transmission data occupying the unlicensed spectrum collides with other devices, including:
  • the first device acquires feedback information of the transmission data, and determines collision with other devices when the channel transmission data occupying the unlicensed spectrum is determined according to the feedback information of the transmission data.
  • the feedback information of the transmission data is a hybrid automatic repeat request (HARQ), and the HARQ includes a negative acknowledgement NACK or an acknowledgement ACK, where the NACK is used to indicate data. Collision, the ACK is used to indicate that the data does not collide; or the feedback information of the transmission data is a request for adjusting the CCA detection time or the number of detections of the idle channel of the channel of the unlicensed spectrum.
  • HARQ hybrid automatic repeat request
  • the HARQ includes a negative acknowledgement NACK or an acknowledgement ACK, where the NACK is used to indicate data. Collision, the ACK is used to indicate that the data does not collide; or the feedback information of the transmission data is a request for adjusting the CCA detection time or the number of detections of the idle channel of the channel of the unlicensed spectrum.
  • the first device sends the adjusted idle channel of the unlicensed spectrum channel to evaluate the CCA detection time or the number of detection times. .
  • the first to the ninth implementation manners in the tenth implementation manner, if the first device occupies the channel transmission data of the unlicensed spectrum for X consecutive times, or the first device Channel transmission that fails to occupy the unlicensed spectrum for consecutive Y times Transmitting data, setting the adjusted channel identification CCA detection time or the number of detections of the channel of the unlicensed spectrum to the idle channel estimation CCA detection time or the number of detections of the channel of the unlicensed spectrum before adjustment, where X and Y are positive integers.
  • the idle channel of the channel of the unlicensed spectrum before the adjustment evaluates the CCA detection time or the number of detections is an idle channel of a preset unlicensed spectrum channel. Evaluate the CCA detection time or number of tests.
  • a first device including:
  • a processing unit configured to adjust a CCA detection time or a number of detection times of an idle channel of the channel of the unlicensed spectrum after colliding with other devices when determining channel transmission data occupying the unlicensed spectrum
  • a transmitting unit configured to estimate, according to the adjusted idle channel of the channel of the unlicensed spectrum, a CCA detection time or a number of detections to occupy channel transmission data of the unlicensed spectrum.
  • the processing unit is specifically configured to:
  • the idle channel of the channel of the unlicensed spectrum is randomly adjusted to evaluate the CCA detection time or the number of detections.
  • the processing unit is specifically configured to:
  • the idle channel estimation CCA detection time of the channel of the unlicensed spectrum is adjusted by increasing or decreasing the data frame length.
  • the processing unit is specifically configured to:
  • the idle channel of the channel of the unlicensed spectrum is delayed to evaluate the CCA detection time.
  • the processing unit is specifically configured to:
  • the idle channel evaluation CCA detection time of the channel of the unlicensed spectrum is adjusted by increasing or decreasing the idle channel evaluation CCA detection interval.
  • the processing unit is specifically configured to:
  • the idle channel of the channel of the unlicensed spectrum is increased or decreased to evaluate the number of CCA detections.
  • the processing unit is further configured to:
  • the idle channel of the channel of the unlicensed spectrum is delayed to evaluate the CCA detection time.
  • the processing unit is specifically configured to:
  • the first device further includes:
  • a transmitting unit configured to send the adjusted idle channel of the channel of the unlicensed spectrum to evaluate a CCA detection time or a number of detections.
  • the processing unit is further configured to:
  • the idle channel estimation CCA detection time or the number of detections of the channel of the unlicensed spectrum is set as the idle channel evaluation CCA detection time or the number of detections of the channel of the unlicensed spectrum before adjustment, wherein X and Y are positive integers.
  • a first device including:
  • a memory for storing program code
  • the processor performs the following method: Adjusting the idle channel of the unlicensed spectrum channel to determine the CCA detection time or the number of detections after determining collision with other devices when occupying channel transmission data of the unlicensed spectrum;
  • the method executed by the processor further includes:
  • the method performed by the processor includes:
  • the idle channel of the channel of the unlicensed spectrum is randomly adjusted to evaluate the CCA detection time or the number of detections.
  • the method performed by the processor includes:
  • the idle channel estimation CCA detection time of the channel of the unlicensed spectrum is adjusted by increasing or decreasing the data frame length.
  • the method performed by the processor includes:
  • the idle channel of the channel of the unlicensed spectrum is delayed to evaluate the CCA detection time.
  • the method performed by the processor includes:
  • the idle channel evaluation CCA detection time of the channel of the unlicensed spectrum is adjusted by increasing or decreasing the idle channel evaluation CCA detection interval.
  • the method performed by the processor includes:
  • the idle channel of the channel of the unlicensed spectrum is increased or decreased to evaluate the number of CCA detections.
  • the method performed by the processor further includes:
  • the idle channel of the channel of the unlicensed spectrum is delayed to evaluate the CCA detection time.
  • the method performed by the processor includes:
  • the first device further includes:
  • a transmitter configured to send the adjusted idle channel of the channel of the unlicensed spectrum to evaluate a CCA detection time or a number of detections.
  • the method performed by the processor further includes:
  • the idle channel estimation CCA detection time or the number of detections of the channel of the unlicensed spectrum is set as the idle channel evaluation CCA detection time or the number of detections of the channel of the unlicensed spectrum before adjustment, wherein X and Y are positive integers.
  • Embodiments of the present invention provide a data transmission method and apparatus.
  • the first device adjusts the CCA detection time or the number of detections of the channel of the unlicensed spectrum after colliding with other devices when determining the channel transmission data occupying the unlicensed spectrum, and then according to the adjusted unlicensed spectrum
  • the idle channel of the channel evaluates whether the CCA detection time or the number of detections occupy the channel transmission data of the unlicensed spectrum, thereby changing the competition relationship of the data transmitted between the devices in which the data collision occurs, so that the competition time between the devices in which the data collision occurs is different.
  • Sexuality which enables the device to be able to effectively reduce the probability of collision again after the device in the LAA-LTE system preempts the unlicensed spectrum collision.
  • FIG. 1 is a schematic diagram of a data frame period structure of an FBE frame structure provided by the prior art
  • FIG. 2 is a schematic diagram of an operation mode of a first device using an FBE according to the prior art
  • FIG. 3 is a schematic diagram of a working mode in which a first device adopts a first FBE and an LBE working mode
  • FIG. 4 is a schematic diagram of a working mode in which a first device adopts a second FBE and a working mode of an LBE;
  • FIG. 5 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 6 is a flowchart of another data transmission method according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of an operation mode of a first device adopting an FBE according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of another working mode of using a FBE by a first device according to an embodiment of the present invention.
  • FIG. 9 is a flowchart of still another data transmission method according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of another working mode of using a FBE by a first device according to an embodiment of the present invention.
  • FIG. 11 is a flowchart of still another data transmission method according to an embodiment of the present invention.
  • FIG. 12 is a flowchart of still another data transmission method according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a working mode of a first device using a first type of FBE and an operating mode of an LBE according to an embodiment of the present invention
  • FIG. 14 is a flowchart of still another data transmission method according to an embodiment of the present invention.
  • FIG. 15 is a schematic diagram of a working mode of a second device using a second FBE and a working mode of an LBE working mode according to an embodiment of the present invention
  • FIG. 16 is a schematic structural diagram of a first device according to an embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of another first device according to an embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of still another first device according to an embodiment of the present invention.
  • FIG. 19 is a schematic structural diagram of still another first device according to an embodiment of the present invention.
  • the first device of the present invention may be a base station or a user equipment (English name: User Equipment, English abbreviation: UE), and the base station or user equipment may be a LAA-LTE device in the LAA-LTE system.
  • the second device is a user equipment, and when the first device is a user equipment, the second device may also be a user equipment.
  • the second device may be a receiving device that receives data transmitted by the first device.
  • the second device can be a LAA-LTE device in the system.
  • the third device may be a device that collides with data sent by the first device, and the third device may be a wireless fidelity WiFi device, or may be a LAA-LTE device in the system.
  • the first device, the second device, and the third device described in the present invention are for distinguishing purposes only and are not intended to be limiting.
  • the spectrum used by the wireless communication system can be divided into an authorized spectrum (English name: licensed spectrum) and an unlicensed spectrum (English full name: unlicensed spectrum).
  • the licensed spectrum is a spectrum that can be used after being authorized. For example, for a commercial mobile communication system, an operator needs to auction an authorized spectrum, and after obtaining the authorization, the corresponding spectrum can be used to carry out mobile communication operations.
  • the unlicensed spectrum does not require an authorized spectrum to be used, that is, no auction is required, and any operator can deploy devices on unlicensed bands, such as 2.4 GHz and 5 GHz. Bring a wireless fidelity WiFi device.
  • the data frame period (English full name: Fixed Frame Period) 10 of the FBE frame structure includes a channel occupation period (English full name: Channel Occupancy Time) 101 and a channel idle period (English name: Idle Period) 102.
  • the first device uses the ith idle channel assessment (English full name: Clear Channel Assessment, English) Abbreviation: CCA) Detects whether the channel of the unlicensed spectrum of the i+1th data frame period 10 is occupied. If the channel of the unlicensed spectrum of the i+1th data frame period is idle, the first device is in the i+1th data frame period.
  • CCA Clear Channel Assessment
  • the channel occupancy period 101 of 10 occupies the channel transmission data of the unlicensed spectrum; if the channel of the unlicensed spectrum of the i+1th data frame period 10 is occupied, the first device retreats the i+1th data frame period 10, in the At the end of the channel idle period 102 of the i+1 data frame period 10, the first device uses the i+1th CCA to detect whether the channel of the unlicensed spectrum of the i+2th data frame period is occupied, so that the first device occupies the i th +2 channel transmission data of the unlicensed spectrum of the data frame period.
  • the CCA detection period 11 is not less than 18 microseconds (us).
  • the CCA interval 111 is the start of the i-th CCA detection to the i+1th CCA detection start, or the CCA interval 111 is the end of the i-th CCA detection to the end of the (i+1)th CCA detection.
  • the channel idle period 102 accounts for at least 5 percent of the data frame period 10.
  • the first device When the first device adopts the working mode of the LBE, the first device needs to perform a CCA backoff mechanism before the channel that occupies the unlicensed spectrum transmits data.
  • the first device randomly selects an integer N from 1 to q as an initial backoff value, q may be referred to as a preset backoff threshold of the first device, and q is a preset positive integer greater than 1; if the first When the device performs CCA detection to determine that the channel of the unlicensed spectrum is idle, the initial backoff value N is decremented by one; if the channel of the unlicensed spectrum is determined to be occupied when the first device performs CCA detection, the backoff value is kept unchanged, each time after the determined backoff value may be referred to as a current detecting CCA backoff value N c, the current channel for transmitting data until N c when the backoff value is reduced to 0, a first device occupancy unlicensed spectrum.
  • the first device When the first device adopts the working mode of the first FBE and the working mode of the LBE, the first device completes the channel transmission data of the unlicensed spectrum after the channel occupation period is completed, according to the CCA interval or the preset time, A device uses CCA to detect channels of unlicensed spectrum.
  • the probability of the FBE occupying the channel of the unlicensed spectrum may be increased by increasing the frequency of the CCA detection, or shortening the CCA detection period, or shortening the CCA interval, wherein the two CCA intervals are not necessarily equal. As shown in FIG.
  • the first device uses the CCA to detect the channel of the unlicensed spectrum at the times t1, t2, and t3, if the detection is performed.
  • the channel transmission data of the unlicensed spectrum is occupied. If the channel of the unlicensed spectrum is detected to be taken back by the M CCA detection period, until the current backoff value N c is reduced to 0 at time t3, the first device Channel transmission data occupying unlicensed spectrum.
  • a special M is equal to 1.
  • the real arrow indicates that the CCA detects the channel occupancy of the unlicensed spectrum
  • the virtual arrow indicates that the CCA detects the channel idle of the unlicensed spectrum.
  • the first device may also end in the channel occupation period 101, and the CCA detects the channel of the unlicensed spectrum in the channel idle period 102, that is, the time t1 is within the period of the channel idle period 102.
  • the first device occupies the channel transmission data of the unlicensed spectrum of the channel occupation period 101 of the data frame period 10, After the channel resource is released, the first device idles off Q time slots according to the idle value Q, and the WiFi device or other devices in the LAA-LTE system can use the channel of the unlicensed spectrum to transmit data, after idle Q time slots.
  • the first device adopts the CCA backoff mechanism of the LBE or randomly selects an a value, wherein the real arrow indicates that the channel occupancy of the unlicensed spectrum is determined by the CCA, and the virtual arrow indicates that the CCA detects that the channel of the unlicensed spectrum is idle.
  • the Q value may be the duration of the channel occupied by the first device by the unlicensed spectrum, for example, 10 milliseconds, or may be a random value, for example, randomly selected within the range of [1, 10] milliseconds, but the Q value is less than or equal to the first
  • the data frame period of the device takes up time.
  • the collision described in the present invention may be a data collision that occurs when the device in the LAA-LTE system uses the same LBT mode to transmit data using the same unlicensed spectrum channel, or the device in the LAA-LTE system adopts the above LBT mode and WiFi.
  • a specific method for effectively reducing the probability of reoccurring collision is as described in the following embodiments.
  • An embodiment of the present invention provides a data transmission method, as shown in FIG. 5, including:
  • Step 101 The first device adjusts the CCA detection time or the number of detection times of the idle channel of the channel of the unlicensed spectrum after colliding with other devices when determining channel transmission data occupying the unlicensed spectrum.
  • Step 102 The first device evaluates, according to the adjusted idle channel of the unlicensed spectrum channel, the CCA detection time or the number of detections to occupy the channel transmission data of the unlicensed spectrum.
  • the first device adjusts the CCA detection time or the number of detections of the channel of the unlicensed spectrum after colliding with other devices when determining the channel transmission data occupying the unlicensed spectrum, and then according to the adjusted
  • the idle channel of the channel of the unlicensed spectrum evaluates the CCA detection time or the number of detections occupying the channel transmission data of the unlicensed spectrum, thereby changing the competition relationship between the data transmission between the devices in which the data collision occurs, so that the data collision occurs between the devices There is a difference in the competition time, which enables the device to be able to effectively reduce the probability of collision again after the device in the LAA-LTE system preempts the unlicensed spectrum collision.
  • the first device acquires feedback information of the transmission data, where the first device acquires a device determines whether the feedback information of the transmission data is greater than or equal to a collision threshold value of the preset transmission data, where the feedback information of the transmission data is feedback information of the plurality of transmission data acquired by the first device;
  • the device determines that the feedback information of the transmission data is greater than or equal to a collision threshold of the preset transmission data, and adjusts a channel of the first device that competes for the unlicensed spectrum; if the first device determines the feedback information of the transmission data
  • the collision threshold is smaller than the preset transmission data, and the channel of the first device that competes for the unlicensed spectrum is not adjusted.
  • the feedback information of the transmission data is a hybrid automatic repeat request (English name: Hybrid Automatic Repeat reQuest, English abbreviation: HARQ), and the HARQ includes a negative response (English full name: Negative Acknowledgement, English abbreviation: NACK) or a response.
  • NACK Negative Acknowledgement, English abbreviation: ACK
  • the NACK is used to indicate data collision
  • the ACK is used to indicate that the data does not collide
  • the feedback information of the transmission data is to adjust the channel of the unlicensed spectrum
  • the idle channel evaluates the request for the CCA detection time or number of detections.
  • the collision threshold value of the transmission data is used to indicate the number of feedback information of the transmission data of the data collision that is received after the data collision.
  • the collision threshold of the transmission data may be used to indicate a ratio of the number of feedback information of the transmission data of the data collision that is received after the data collision to the number of the receiving devices.
  • the collision threshold value of the transmission data is used to indicate a ratio of the number of feedback information of the transmission data of the data collision that is received after the data collision to the number of the feedback information of the total transmission data received.
  • the feedback information of the total transmission data includes feedback information of the transmission data of the data collision that is received after the data collision and feedback information of the transmission data of the received data collision that has not occurred.
  • a data frame period multiple devices in the LAA-LTE system may be scheduled, and data collision may not be determined by HARQ feedback of a certain device, and the data frame may be determined according to HARQ feedback of multiple devices.
  • a data collision occurred during the period. For example, all devices in the data frame period feed back NACK or adjust the station.
  • the idle channel of the channel of the unlicensed spectrum evaluates the request for the CCA detection time or the number of detections.
  • a part of the device in the data frame period feeds back the NACK or adjusts the idle channel of the unlicensed spectrum channel to evaluate the CCA detection time or the number of detection times, it may be determined that a data collision occurs in a part of the data frame period, in which case The retransmission mechanism can be used to retransmit the part of the data to the corresponding device.
  • the idle channel estimation CCA detection time or the number of detections of the channel of the unlicensed spectrum can be understood as: randomly adjusting the idle channel of the unlicensed spectrum to evaluate the CCA detection time or the number of detections, specifically, the first The device adjusts the CCA detection time of the idle channel of the unlicensed spectrum channel by increasing or decreasing the data frame length; delaying the CCA detection time of the idle channel of the channel of the unlicensed spectrum; by increasing or decreasing the idle time Channel estimation CCA detection interval to adjust an idle channel evaluation CCA detection time of the channel of the unlicensed spectrum; delaying the idle channel of the unlicensed spectrum channel to estimate a CCA detection time, increasing or decreasing the idleness of the channel of the unlicensed spectrum The channel evaluates the number of CCA detections.
  • the first device sends the adjusted idle channel of the unlicensed spectrum to evaluate the CCA detection time or the number of detections. And if the first device occupies channel transmission data of the unlicensed spectrum for X times consecutively, or the first device fails to occupy channel transmission data of the unlicensed spectrum for consecutive Y times, the adjusted device
  • the idle channel estimation CCA detection time or the number of detections of the channel of the unlicensed spectrum is set as the idle channel evaluation CCA detection time or the number of detections of the channel of the unlicensed spectrum before adjustment, wherein X and Y are positive integers.
  • the idle channel estimation CCA detection time or the number of detections of the channel of the unlicensed spectrum before the adjustment is an idle channel evaluation CCA detection time or number of detections of the channel of the unlicensed spectrum set in advance.
  • the embodiment of the present invention provides a data transmission method, and assumes that a data collision occurs when the first device adopts the working mode of the FBE, as shown in FIG. 6, including:
  • Step 201 The first device acquires feedback information of the transmission data sent by the multiple second devices.
  • Step 202 The first device determines whether the feedback information of the transmission data is greater than or equal to a collision threshold of the preset transmission data.
  • step 203 is performed.
  • step 206 is performed.
  • Step 203 After determining, by the first device, the channel transmission data occupying the unlicensed spectrum, the first device collides with other devices, and randomly increases or decreases the data frame length to adjust the channel of the unlicensed spectrum.
  • the idle channel evaluates the CCA detection time.
  • the first device occupies the channel transmission data of the unlicensed spectrum of the channel occupation period 101 of the i-th data frame period 10, and the ith data frame period 10 is T milliseconds (ms), as shown in FIG. Between t0 and t3 shown in 7, in particular, may be 10 milliseconds.
  • the channel occupation period 101 of the ith data frame period 10 is T1 milliseconds, as shown by t0 to t2 in FIG.
  • the channel idle period 102 of the ith data frame period 10 is T2 milliseconds, as shown between t2 and t3 in FIG.
  • the channel occupancy period 101 of the (i+1)th data frame period 10 may be reduced by 1/n times, and the channel occupation period 101 is 1/n*T1 milliseconds, as shown in FIG. 7. Between t3 and t4 is shown. The channel idle period 102 of the i+1th data frame period 10 is still T2 milliseconds, as shown between t4 and t5 in FIG. The i+1th data frame period 10 is 1/n*T1+T2.
  • the first device occupies the channel transmission data of the unlicensed spectrum of the channel occupation period 101 of the i-th data frame period 10, and the ith data frame period 10 is T milliseconds (ms), as shown in FIG. Between t0 and t3, it can be 10 milliseconds.
  • the channel occupation period 101 of the ith data frame period 10 is T1 milliseconds, as shown in FIG. 8 between t0 and t2.
  • the channel idle period 102 of the ith data frame period 10 is T2 milliseconds, as shown between t2 and t3 in FIG.
  • the first device obtains feedback of the transmitted data
  • the i+1th data frame period 10 can be reduced by 1/n times, and the i+1th data frame period 10 is 1/n*T milliseconds, that is, the channel occupation period 101 and the channel idle period 102 are simultaneously reduced.
  • the channel idle period 101 of the i+1th data frame period 10 is 1/n*T1 millisecond
  • the channel idle period 102 of the (i+1)th data frame period 10 is 1/n*T2 milliseconds. It should be noted that when the data frame period is reduced, the delay of transmitting data by the first device can be reduced, and each device can transmit data faster.
  • the i+1th data frame period 10 may be increased by m times, and the i+1th data frame period 10 is m*T milliseconds; or, the i+th 1
  • the channel occupation period 101 of the data frame period 10 is increased by m times, and the channel occupation period 101 of the (i+1)th data frame period 10 is m*T1 milliseconds.
  • the method for changing the data frame period or the channel occupation period length is not specifically limited.
  • n and n may be equal or unequal.
  • X and Y are both positive integers, and may be configured by the system (first device configuration, receiving device configuration or third-party device configuration, etc.), or randomly generated.
  • Step 204 The first device evaluates the CCA detection time by using an idle channel of the channel for transmitting the adjusted unlicensed spectrum by the licensed spectrum or the unlicensed spectrum.
  • the first device may pass the licensed spectrum or the auxiliary authorized spectrum to the user terminal or the base station
  • the idle channel of the channel transmitting the adjusted unlicensed spectrum evaluates the CCA detection time.
  • Step 205 The first device uses the idle channel of the channel of the adjusted unlicensed spectrum to evaluate the CCA detection time to preempt the channel of the unlicensed spectrum.
  • Step 206 The first device uses the idle channel of the channel of the original unlicensed spectrum to evaluate the CCA detection time to preempt the channel of the unlicensed spectrum.
  • the first device obtains the feedback information of the transmission data, and determines, according to the feedback information of the transmission data, that the data of the channel transmission of the unlicensed spectrum of the first device collides with the data, and randomly increases or decreases the length of the data frame.
  • the competition between the first devices in which the first device has a data collision causes a difference in the competition time between the first devices in which the data collision occurs, and the device can be preempted after the device in the LAA-LTE system collides with the unlicensed spectrum. , effectively reduce the probability of collisions again.
  • the embodiment of the present invention provides a data transmission method, and assumes that a data collision occurs when the first device adopts the working mode of the FBE, as shown in FIG. 9, including:
  • Step 301 The first device acquires feedback information of the transmission data sent by the multiple second devices.
  • Step 302 The first device determines whether the feedback information of the transmission data is greater than or equal to a collision threshold value of the preset transmission data.
  • step 303 is performed.
  • step 306 is performed.
  • Step 303 After determining, by the first device, that the channel transmission data occupying the unlicensed spectrum collides with other devices according to the feedback information of the transmission data, the first device randomly delays the idle channel of the unlicensed spectrum to evaluate the CCA detection time.
  • the ith data frame period 10 includes a channel occupation period 101 and a channel idle period 102. It is assumed that the first device occupies the channel transmission data of the unlicensed spectrum of the channel occupation period 101 of the i-th data frame period 10, and then, at the end t1 of the channel idle period 102, the CIA is used to detect the (i+1)th data frame period 10 Channel of unlicensed spectrum. However, after determining, by the first device, the data of the channel transmission of the unlicensed spectrum of the i-th data frame period 10 that the first device occupies according to the feedback information of the acquired transmission data, the first device may detect the (i+1)th data frame by the CCA.
  • the time of the channel of the unlicensed spectrum of cycle 10 is delayed until time t4.
  • z subframes, z slots, z OFDM symbols, or multiples of z sampling time intervals Ts may be delayed, so that the channel moment of the unlicensed spectrum of the CCA detection data frame period is not in the channel of the data frame period.
  • the multiple of the z sampling time intervals Ts may be z 624*Ts.
  • the delay multiple z is a random number between [0, w].
  • X and Y are both positive integers, and may be configured by the system (first device configuration, receiving device configuration or third-party device configuration, etc.), or randomly generated.
  • the data frame period or channel occupation period is not adjusted.
  • the first device only needs to set in advance a time at which data may be transmitted after a data collision occurs. For example The start time of the frame, or the start time of the OFDM symbol.
  • the receiving device detects the channel signal at the time of possible data transmission, that is, the reception can be completed.
  • Step 304 The first device evaluates the CCA detection time by using an idle channel of the channel for transmitting the adjusted unlicensed spectrum by the licensed spectrum or the unlicensed spectrum.
  • Step 305 The first device uses the idle channel of the channel of the adjusted unlicensed spectrum to evaluate the CCA detection time to preempt the channel of the unlicensed spectrum.
  • Step 306 The first device uses the idle channel of the channel of the original unlicensed spectrum to evaluate the CCA detection time to preempt the channel of the unlicensed spectrum.
  • the first device obtains the feedback information of the transmission data, and determines, according to the feedback information of the transmission data, that the data of the channel transmission of the unlicensed spectrum of the first device collides with the data, and randomly delays the channel of the unlicensed spectrum.
  • the idle channel evaluates the CCA detection time, so that the first device shifts the data in the time domain as much as possible, and adjusts the channel time of the first device to compete for the unlicensed spectrum, thereby changing the first data collision with the first device.
  • the competition between the devices causes the competition time between the first devices in which the data collision occurs to be different, and the probability that the collision occurs again after the device preempts the unlicensed spectrum collision in the LAA-LTE system.
  • the embodiment of the present invention provides a data transmission method, and assumes that a data collision occurs when the first device adopts the working mode of the LBE, as shown in FIG.
  • Step 401 The first device acquires feedback information of the transmission data sent by the multiple second devices.
  • Step 402 The first device determines whether the feedback information of the transmission data is greater than or equal to a collision threshold of the preset transmission data.
  • step 403 is performed.
  • step 406 is performed.
  • Step 403 The first device determines, according to the feedback information of the transmission data, that the first device occupies the channel transmission data of the unlicensed spectrum and collides with other devices, and randomly increases or decreases the channel of the unlicensed spectrum according to the number of collisions.
  • the idle channel evaluates the number of CCA detections.
  • the first device determines, according to the feedback information of the acquired transmission data, that the first device occupies the data of the channel transmission of the unlicensed spectrum of the i-th data frame period 10, and may randomly increase or decrease according to the number of collisions.
  • the q value of the CCA backoff mechanism of the LBE is randomly increased, if the increased q value exceeds the maximum value, the increased q value takes the maximum value; when the CCA backoff mechanism of the LBE is randomly reduced In the case of the q value, if the reduced q value exceeds the minimum value, the reduced q value takes a minimum value, wherein the maximum value of the q value may be 32, and the minimum value of the q value may be 4.
  • the present invention does not specifically limit the maximum value of the q value and the minimum value of the q value.
  • an initial backoff value N may be randomly selected from among [1, q], the first device in accordance with the initial value N perform CCA backoff backoff, the backoff value N C until the current is zero transmit data.
  • the channel occupancy period may be related to the q value, for example, the channel occupancy period is (13/32) times q milliseconds, so that the data frame period also changes while the q value is adjusted.
  • the present invention does not limit the specific manner of adjusting the q value of the CCA backoff mechanism.
  • the first device After the first device adjusts the q value, the first device randomly selects an initial backoff value N from [1, q]. It is assumed that the initial backoff value N is greater than the initial backoff value N before the q value is adjusted with respect to the first device. Since the backoff duration is the N*CCA detection period, the initial backoff value N randomly selected after adjusting the q value by the first device may be used. Adjust the backoff time. For example, assuming that the q value is 30, the initial backoff value N before the first device adjusts the q value is 2, the backoff duration is 2*CCA detection period, and the first device adjusts the q value to 60. After the first device adjusts the q value, the first device randomly selects an initial backoff value N from [1, 60], the first The initial backoff value N after the device adjusts the q value is 6, and the backoff duration is 6*CCA detection period.
  • X and Y are both positive integers, and may be configured by the system (first device configuration, receiving device configuration or third-party device configuration, etc.), or randomly generated.
  • Step 404 The first device evaluates the CCA detection times by using an idle channel of the channel for transmitting the adjusted unlicensed spectrum by the licensed spectrum or the unlicensed spectrum.
  • the first device may send the adjusted value or the backoff duration of the adjusted CCA backoff mechanism to the user terminal or the base station by using the licensed spectrum or the auxiliary authorized spectrum.
  • Step 405 The first device uses the idle channel of the channel of the adjusted unlicensed spectrum to evaluate the number of CCA detections to preempt the channel of the unlicensed spectrum.
  • Step 406 The first device uses the idle channel of the channel of the original unlicensed spectrum to evaluate the CCA detection times to preempt the channel of the unlicensed spectrum.
  • the first device obtains the feedback information of the transmission data, and determines, according to the feedback information of the transmission data, that the data of the channel transmission of the first device occupying the unlicensed spectrum has a data collision, and randomly increases or decreases according to the number of collisions.
  • the idle channel of the channel of the unlicensed spectrum evaluates the number of CCA detections, so that the first device shifts the data in the time domain as much as possible, and adjusts the channel time of the first device to compete for the unlicensed spectrum, thereby changing the first device. Competition between the first devices in which data collisions occur Therefore, the contention time between the first devices in which the data collision occurs is different, and the probability that the collision occurs again after the device preempts the unlicensed spectrum collision in the LAA-LTE system is realized.
  • the embodiment of the present invention provides a data transmission method. It is assumed that a data collision occurs when the first device adopts the working mode of the first FBE and the working mode of the LBE, as shown in FIG. 12, including:
  • Step 501 The first device acquires feedback information of the transmission data sent by the multiple second devices.
  • Step 502 The first device determines whether the feedback information of the transmission data is greater than or equal to a collision threshold of the preset transmission data.
  • step 503 is performed.
  • step 506 is performed.
  • Step 503 After determining, by the first device, that the channel transmission data occupying the unlicensed spectrum collides with other devices according to the feedback information of the transmission data, the first device randomly adjusts the CCA detection interval by increasing or decreasing the idle channel according to the number of data collision times.
  • the idle channel of the channel of the unlicensed spectrum evaluates the CCA detection time.
  • the first device randomly increases or decreases the CCA detection interval according to the number of data collisions, or the first device may randomly increase or decrease the CCA detection period according to the number of data collisions.
  • the ith data frame period 10 includes a channel occupation period 101 and a channel idle period 102. It is assumed that the first device occupies the channel transmission data of the unlicensed spectrum of the channel occupation period 101 of the i-th data frame period 10, and then, at the end t1 of the channel idle period 102, the CIA is used to detect the (i+1)th data frame period 10
  • the channel of the unlicensed spectrum performs the CCA backoff mechanism. Assuming that the initial backoff value N is 1, if the CCA detects that the channel of the unlicensed spectrum of the i+1th data frame period 10 is occupied, the initial backoff value N does not change, and at time t2, the first device redetects the i+1th data frame.
  • Periodic unlicensed 10 spectrum channel if the CCA detection i + 1 th data frame period unlicensed 10 spectrum channel is idle, the initial backoff value N minus 1, to give the current backoff value N C is 0, the first device is occupied by The channel of i+1 data frame period 10 occupies the channel transmission data of the unlicensed spectrum of period 101.
  • the first device determines, according to the feedback information of the acquired transmission data, that the data of the channel transmission of the unlicensed spectrum occupied by the first device occupying the i-th data frame period 10 is data collision, and may randomly increase or decrease according to the number of data collisions.
  • the CCA detection interval in the small CCA backoff mechanism. Assuming that the initial CCA detection interval is D1, and the initial CCA detection interval is increased by m times, the CCA detection interval is D1*m, or the initial CCA detection interval is decreased by 1/n times, and the initial CCA detection interval is 1/n. *D1. As shown in FIG. 13, the CCA interval is increased from t1 to t2 to t1 to t4.
  • the initial backoff value N is unchanged, and at time t4, if the CCA detects the unlicensed spectrum of the (i+1)th data frame period 10 If the channel is idle, the initial backoff value N is decremented by one, and the current backoff value N c is 0.
  • the first device occupies the channel transmission data of the unlicensed spectrum of the channel occupation period 101 of the i+1th data frame period 10.
  • n and n may be equal or unequal. Decrease the multiples n and the magnification m to be a random number between [1, w].
  • the maximum value w can be incremented after each collision.
  • the specific adjustment manner of the CCA interval is not limited in the present invention.
  • X and Y are both positive integers, and may be configured by the system (first device configuration, receiving device configuration or third-party device configuration, etc.), or randomly generated.
  • Step 504 The first device evaluates a CCA detection time by using an idle channel of the channel for transmitting the adjusted unlicensed spectrum by the licensed spectrum or the unlicensed spectrum.
  • Step 505 The first device uses the idle channel of the channel of the adjusted unlicensed spectrum to evaluate the CCA detection time to preempt the channel of the unlicensed spectrum.
  • Step 506 The first device uses the idle channel of the channel of the original unlicensed spectrum to evaluate the CCA detection time to preempt the channel of the unlicensed spectrum.
  • the first device obtains the feedback information of the transmission data, and determines, according to the feedback information of the transmission data, that the data of the channel transmission of the first device occupying the unlicensed spectrum has a data collision, and randomly increases or increases according to the number of data collisions.
  • the idle channel estimation CCA detection interval is adjusted to adjust the idle channel estimation CCA detection time of the channel of the unlicensed spectrum, so that the first device shifts the transmission data in the time domain as much as possible, thereby realizing the adjustment of the competitive unlicensed spectrum of the first device.
  • Channel time thereby changing the contention relationship between the first devices that collide with the first device, so that the competition time between the first devices in which the data collision occurs is different, and the system can be implemented in the LAA-LTE system. After the device seizes the collision of the unlicensed spectrum, it effectively reduces the probability of collision.
  • the embodiment of the present invention provides a data transmission method. It is assumed that a data collision occurs when the first device adopts the working mode of the second FBE and the working mode of the LBE. As shown in FIG. 14, the method includes:
  • Step 601 The first device acquires feedback information of the transmission data sent by the multiple second devices.
  • Step 602 The first device determines whether the feedback information of the transmission data is greater than or equal to a collision threshold of the preset transmission data.
  • step 603 is performed.
  • step 606 is performed.
  • Step 603 After determining, by the first device, that the channel transmission data occupying the unlicensed spectrum collides with other devices according to the feedback information of the transmission data, delaying the idle channel of the unlicensed spectrum channel to evaluate the CCA detection time, according to the collision The number of times the CCA detection of the channel of the unlicensed spectrum is increased or decreased.
  • the ith data frame period 10 includes a channel occupation period 101 and a channel idle period 102. It is assumed that the first device occupies the channel transmission data of the unlicensed spectrum of the channel occupation period 101 of the i-th data frame period 10, and then, after the data transmission is completed, the first device waits for the Q1 time slots according to the preset idle value Q1.
  • the CCA backoff mechanism is performed at time t1, and the channel of the unlicensed spectrum of the (i+1)th data frame period 10 is detected by the CCA. If the channel of the unlicensed spectrum of the i+1th data frame period 10 is occupied by the CCA, the initial backoff value is N.
  • the initial backoff value N is decremented by 1 and the current backoff value N c is 0,
  • the first device occupies channel transmission data of the unlicensed spectrum of the channel occupation period 101 of the (i+1)th data frame period 10.
  • the first device determines, according to the feedback information of the acquired transmission data, that the data of the channel transmission of the unlicensed spectrum occupied by the first device occupying the i-th data frame period 10 is data collision, and may randomly increase or decrease according to the number of data collisions.
  • Small idle value Q Assuming that the initial idle value Q is Q1, the initial idle value Q1 is increased by m times to Q1*m, or the initial idle value Q1 is decreased by 1/n times to 1/n*Q1. As shown in FIG. 15, the initial idle value Q1 is increased by m times to Q1*m.
  • the first device then perform CCA retraction mechanism, at time tn, when the CCA is determined i + 1 th data frame period unlicensed 10 spectrum channel is idle, the initial backoff value N is decremented by 1, and the current backoff value N C is 0, the first A device occupies the channel transmission data of the unlicensed spectrum of the channel occupation period 101 of the i+1th data frame period 10.
  • n and n may be equal or unequal. Decrease the multiples n and the magnification m to be a random number between [1, w].
  • the maximum value w can be incremented after each collision.
  • the present invention does not limit the specific adjustment manner of increasing or decreasing the idle value Q.
  • X and Y are both positive integers, and may be configured by the system (first device configuration, receiving device configuration or third-party device configuration, etc.), or randomly generated.
  • Step 604 The first device evaluates the CCA detection time by using an idle channel of the channel for transmitting the adjusted unlicensed spectrum by the licensed spectrum or the unlicensed spectrum.
  • Step 605 The first device uses the idle channel of the channel of the adjusted unlicensed spectrum to evaluate the CCA detection time to preempt the channel of the unlicensed spectrum.
  • Step 606 The first device uses the idle channel of the channel of the original unlicensed spectrum to evaluate the CCA detection time to preempt the channel of the unlicensed spectrum.
  • the first device obtains the feedback information of the transmission data, and determines, according to the feedback information of the transmission data, the data of the channel transmission that occupies the unlicensed spectrum, and the data of the unlicensed spectrum is delayed.
  • the number of CCA detections of the channel of the unlicensed spectrum is increased or decreased according to the number of collisions, so that the first device shifts the data in the time domain as much as possible, so as to adjust the contention of the unlicensed spectrum of the first device.
  • the embodiment of the present invention provides a first device 70, as shown in FIG. 16, comprising:
  • the processing unit 701 is configured to adjust a CCA detection time or a number of detection times of an idle channel of the channel of the unlicensed spectrum after colliding with other devices when determining channel transmission data occupying the unlicensed spectrum;
  • the transmitting unit 702 is configured to estimate, according to the adjusted idle channel of the unlicensed spectrum channel, the CCA detection time or the number of detections to occupy the channel transmission data of the unlicensed spectrum.
  • the first device adjusts the CCA detection time or the number of detections of the channel of the unlicensed spectrum after colliding with other devices when determining the channel transmission data occupying the unlicensed spectrum, and then according to the adjusted
  • the idle channel of the channel of the unlicensed spectrum evaluates the CCA detection time or the number of detections occupying the channel transmission data of the unlicensed spectrum, thereby changing the competition relationship between the data transmission between the devices in which the data collision occurs, so that the data collision occurs between the devices There is a difference in the competition time, which enables the device to be able to effectively reduce the probability of collision again after the device in the LAA-LTE system preempts the unlicensed spectrum collision.
  • the processing unit 701 is specifically configured to:
  • the idle channel of the channel of the unlicensed spectrum is randomly adjusted to evaluate the CCA detection time or the number of detections.
  • the processing unit 701 is specifically configured to:
  • the idle channel estimation CCA detection time of the channel of the unlicensed spectrum is adjusted by increasing or decreasing the data frame length.
  • the processing unit 701 is specifically configured to:
  • the idle channel of the channel of the unlicensed spectrum is delayed to evaluate the CCA detection time.
  • the processing unit 701 is specifically configured to:
  • the idle channel evaluation CCA detection time of the channel of the unlicensed spectrum is adjusted by increasing or decreasing the idle channel evaluation CCA detection interval.
  • the processing unit 701 is specifically configured to:
  • the idle channel of the channel of the unlicensed spectrum is increased or decreased to evaluate the number of CCA detections.
  • the processing unit 701 is further configured to:
  • the idle channel of the channel of the unlicensed spectrum is delayed to evaluate the CCA detection time.
  • the processing unit 701 is specifically configured to:
  • the feedback information of the transmission data is a hybrid automatic repeat request (HARQ), the HARQ includes a negative acknowledgement NACK or a response ACK, the NACK is used to indicate a data collision, and the ACK is used to indicate that the data does not collide; or the transmission
  • the feedback information of the data is a request for adjusting the CCA detection time or the number of detections of the idle channel of the channel of the unlicensed spectrum.
  • the first device 70 further includes:
  • the transmitting unit 703 is configured to send the adjusted idle channel of the unlicensed spectrum to estimate the CCA detection time or the number of detections.
  • the processing unit 701 is further configured to:
  • the idle channel estimation CCA detection time or the number of detections of the channel of the unlicensed spectrum is set as the idle channel evaluation CCA detection time or the number of detections of the channel of the unlicensed spectrum before adjustment, wherein X and Y are positive integers.
  • the idle channel of the channel of the unlicensed spectrum before the adjustment is evaluated.
  • the CCA detection time or the number of times of detection is the idle channel evaluation CCA of the channel of the unlicensed spectrum set in advance. The time of detection or the number of tests.
  • the embodiment of the present invention provides a first device 80, as shown in FIG. 18, including:
  • a memory 801 configured to store program code
  • the processor 802 is configured to invoke the program code stored by the memory 901 to perform a method of adjusting an idle channel assessment CCA detection of a channel of the unlicensed spectrum after colliding with other devices when determining channel transmission data occupying an unlicensed spectrum. Time or number of tests;
  • the method performed by the processor 802 further includes:
  • the first device adjusts the CCA detection time or the number of detections of the channel of the unlicensed spectrum after colliding with other devices when determining the channel transmission data occupying the unlicensed spectrum, and then according to the adjusted
  • the idle channel of the channel of the unlicensed spectrum evaluates the CCA detection time or the number of detections occupying the channel transmission data of the unlicensed spectrum, thereby changing the competition relationship between the data transmission between the devices in which the data collision occurs, so that the data collision occurs between the devices There is a difference in the competition time, which enables the device to be able to effectively reduce the probability of collision again after the device in the LAA-LTE system preempts the unlicensed spectrum collision.
  • the method performed by the processor 802 includes:
  • the idle channel of the channel of the unlicensed spectrum is randomly adjusted to evaluate the CCA detection time or the number of detections.
  • the method performed by the processor 802 includes:
  • the idle channel estimation CCA detection time of the channel of the unlicensed spectrum is adjusted by increasing or decreasing the data frame length.
  • the method performed by the processor 802 includes:
  • the idle channel of the channel of the unlicensed spectrum is delayed to evaluate the CCA detection time.
  • the method performed by the processor 802 includes:
  • the idle channel evaluation CCA detection time of the channel of the unlicensed spectrum is adjusted by increasing or decreasing the idle channel evaluation CCA detection interval.
  • the method performed by the processor 802 includes:
  • the idle channel of the channel of the unlicensed spectrum is increased or decreased to evaluate the number of CCA detections.
  • the method performed by the processor 802 further includes:
  • the idle channel of the channel of the unlicensed spectrum is delayed to evaluate the CCA detection time.
  • the method performed by the processor 802 includes:
  • the feedback information of the transmission data is a hybrid automatic repeat request (HARQ), the HARQ includes a negative acknowledgement NACK or a response ACK, the NACK is used to indicate a data collision, and the ACK is used to indicate that the data does not collide; or the transmission
  • the feedback information of the data is a request for adjusting the CCA detection time or the number of detections of the idle channel of the channel of the unlicensed spectrum.
  • the first device 80 further includes:
  • the transmitter 803 is configured to send the adjusted idle channel of the channel of the unlicensed spectrum to evaluate a CCA detection time or a number of detections.
  • the method performed by the processor 802 further includes:
  • the idle channel estimation CCA detection time or the number of detections of the channel of the unlicensed spectrum is set as the idle channel evaluation CCA detection time or the number of detections of the channel of the unlicensed spectrum before adjustment, wherein X and Y are positive integers.
  • the idle channel estimation CCA detection time or the number of detections of the channel of the unlicensed spectrum before the adjustment is an idle channel evaluation CCA detection time or number of detections of the channel of the unlicensed spectrum set in advance.
  • the second device may receive the adjusted idle channel assessment CCA detection time or the number of detections of the channel of the unlicensed spectrum sent by the first device, so that the second device is in the adjusted non-authorized
  • the idle channel evaluation CCA detection time of the channel of the spectrum receives the data transmitted by the first device.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明实施例提供一种数据传输方法及装置，涉及通信领域，能够在所述LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。第一设备在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数；所述第一设备根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据。数据传输方法及装置用于传输数据。

Description

一种数据传输方法及装置 技术领域
本发明涉及通信领域，尤其涉及一种数据传输方法及装置。
背景技术
在长期演进的授权频谱辅助接入(英文全称：Licensed-Assisted Access Using Long Term Evolution，英文缩写：LAA-LTE)系统中，设备通过说前先听原则(英文全称：Listen Before Talk，英文缩写：LBT)，即先监听到非授权频谱的信道资源空闲，再使用所述非授权频谱的信道资源来传输数据。所述LAA-LTE系统也可以称为长期演进的非授权频谱(英文全称：Long Term Evolution Unlicensed spectrum，英文缩写：LTE-U)系统。LBT是一种载波监听多路访问(英文全称：Carrier Sense Multiple Access，英文缩写：CSMA)技术，LBT技术的工作模式包括基于负载(英文全称：Load Based Equipment，英文缩写：LBE)的工作模式和基于帧(英文全称：Frame Based Equipment，英文缩写：FBE)的工作模式。
在现有技术中，设备可以采用LBE的工作模式，或者FBE的工作模式，或者LBE的工作模式和FBE的工作模式的混合工作模式传输数据。所述LAA-LTE系统中的设备采用上述LBT方式使用非授权频谱传输数据时，可能存在与其他设备，例如无线保真(英文全称：Wireless Fidelity，英文缩写：WiFi)设备，同时传输数据，导致抢占非授权频谱时发生碰撞，在这之后，可能更大概率的再次发生碰撞，但是，现有技术中并没有一种防止抢占非授权频谱时再次发生碰撞的方法。
发明内容
本发明的实施例提供一种数据传输方法及装置，能够在所述 LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
为达到上述目的，本发明的实施例采用如下技术方案：
第一方面，提供一种数据传输方法，包括：
第一设备在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数；
所述第一设备根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据。
结合第一方面，在第一种可实现方式中，所述第一设备调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数包括：
所述第一设备随机调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
结合第一方面，在第二种可实现方式中，所述第一设备调整所述非授权频谱的信道的空闲信道评估CCA检测时刻包括：
所述第一设备通过增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第一方面，在第三种可实现方式中，所述第一设备调整所述非授权频谱的信道的空闲信道评估CCA检测时刻包括：
所述第一设备延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第一方面，在第四种可实现方式中，所述第一设备调整所述非授权频谱的信道的空闲信道评估CCA检测时刻包括：
所述第一设备通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第一方面，在第五种可实现方式中，所述第一设备调整所述非授权频谱的信道的空闲信道评估CCA检测次数包括：
所述第一设备增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
结合第五种可实现方式，在第六种可实现方式中，所述第一设备增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数之前，还包括：
所述第一设备延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第一方面、第一至第六种可实现方式，在第七种可实现方式中，所述第一设备确定占用非授权频谱的信道传输数据时与其他设备发生碰撞，包括：
所述第一设备获取传输数据的反馈信息，根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞。
结合第七种可实现方式，在第八种可实现方式中，所述传输数据的反馈信息为混合自动重传请求HARQ，所述HARQ包括否定应答NACK或应答ACK，所述NACK用于指示数据碰撞，所述ACK用于指示数据没有碰撞；或者，所述传输数据的反馈信息为调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数的请求。
结合第一方面、第一至第八种可实现方式，在第九种可实现方式中，所述第一设备发送调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
结合第一方面、第一至第九种可实现方式，在第十种可实现方式中，若所述第一设备连续X次占用所述非授权频谱的信道传输数据，或者所述第一设备连续Y次未能占用所述非授权频谱的信道传 输数据，将所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数设置为调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，其中，所述X和Y为正整数。
结合第十种可实现方式，在第十一种可实现方式中，所述调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数为预先设置的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
第二方面，提供一种第一设备，包括：
处理单元，用于在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数；
传输单元，用于根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据。
结合第二方面，在第一种可实现方式中，所述处理单元具体用于：
随机调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
结合第二方面，在第二种可实现方式中，所述处理单元具体用于：
通过增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第二方面，在第三种可实现方式中，所述处理单元具体用于：
延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第二方面，在第四种可实现方式中，所述处理单元具体用于：
通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第二方面，在第五种可实现方式中，所述处理单元具体用于：
增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
结合第五种可实现方式，在第六种可实现方式中，所述处理单元还用于：
延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第二方面、第一至第六种可实现方式，在第七种可实现方式中，所述处理单元具体用于：
获取传输数据的反馈信息，根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞。
结合第七种可实现方式，在第八种可实现方式中，所述第一设备还包括：
发射单元，用于发送调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
结合第二方面、第一至第八种可实现方式，在第九种可实现方式中，所述处理单元还用于：
若所述第一设备连续X次占用所述非授权频谱的信道传输数据，或者所述第一设备连续Y次未能占用所述非授权频谱的信道传输数据，将所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数设置为调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，其中，所述X和Y为正整数。
第三方面，提供一种第一设备，包括：
存储器，用于存储程序代码；
处理器，用于调用所述存储器存储的程序代码执行如下方法： 在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数；
所述处理器执行的方法还包括：
根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据。
结合第三方面，在第一种可实现方式中，所述处理器执行的方法包括：
随机调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
结合第三方面，在第二种可实现方式中，所述处理器执行的方法包括：
通过增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第三方面，在第三种可实现方式中，所述处理器执行的方法包括：
延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第三方面，在第四种可实现方式中，所述处理器执行的方法包括：
通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第三方面，在第五种可实现方式中，所述处理器执行的方法包括：
增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
结合第五种可实现方式，在第六种可实现方式中，所述处理器执行的方法还包括：
延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
结合第三方面、第一至第六种可实现方式，在第七种可实现方式中，所述处理器执行的方法包括：
获取传输数据的反馈信息，根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞。
结合第七种可实现方式，在第八种可实现方式中，所述第一设备还包括：
发射机，用于发送调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
结合第三方面、第一至第八种可实现方式，在第九种可实现方式中，所述处理器执行的方法还包括：
若所述第一设备连续X次占用所述非授权频谱的信道传输数据，或者所述第一设备连续Y次未能占用所述非授权频谱的信道传输数据，将所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数设置为调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，其中，所述X和Y为正整数。
本发明的实施例提供一种数据传输方法及装置。第一设备在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，再根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据，从而改变发生数据碰撞的设备之间传输数据的竞争关系，使发生数据碰撞的设备之间的竞争时间存在差异性，实现了能够在LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍， 显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术提供一种FBE帧结构的数据帧周期结构示意图；
图2为现有技术提供一种第一设备采用FBE的工作模式示意图；
图3为现有技术提供一种第一设备采用第一种FBE的工作模式和LBE的工作模式混合工作模式示意图；
图4为现有技术提供一种第一设备采用第二种FBE的工作模式和LBE的工作模式混合工作模式示意图；
图5为本发明实施例提供一种数据传输方法流程图；
图6为本发明实施例提供另一种数据传输方法流程图；
图7为本发明实施例提供一种第一设备采用FBE的工作模式示意图；
图8为本发明实施例提供另一种第一设备采用FBE的工作模式示意图；
图9为本发明实施例提供又一种数据传输方法流程图；
图10为本发明实施例提供又一种第一设备采用FBE的工作模式示意图；
图11为本发明实施例提供再一种数据传输方法流程图；
图12为本发明实施例提供另再一种数据传输方法流程图；
图13为本发明实施例提供一种第一设备采用第一种FBE的工作模式和LBE的工作模式混合工作模式示意图；
图14为本发明实施例提供又再一种数据传输方法流程图；
图15为本发明实施例提供一种第一设备采用第二种FBE的工作模式和LBE的工作模式混合工作模式示意图；
图16为本发明实施例提供一种第一设备结构示意图；
图17为本发明实施例提供另一种第一设备结构示意图；
图18为本发明实施例提供又一种第一设备结构示意图；
图19为本发明实施例提供再一种第一设备结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明所述的第一设备可以是基站或者用户设备(英文全称：User Equipment，英文缩写：UE)，该基站或者用户设备可以是LAA-LTE系统中的LAA-LTE设备。当第一设备为基站时，第二设备为用户设备；当第一设备为用户设备时，第二设备为基站；当第一设备为用户设备时，第二设备也可以为用户设备，所述第二设备可以为接收所述第一设备发送的数据的接收设备。当然，第二设备可以是系统中的LAA-LTE设备。第三设备可以是与第一设备发送的数据发生数据碰撞的设备，所述第三设备可以是无线保真WiFi设备，也可以是系统中的LAA-LTE设备。本发明中所述的第一设备、第二设备和第三设备仅用于区分，并不用于限定的目的。
需要说明的是，现有技术中，无线通信系统使用的频谱可以分为授权频谱(英文全称：licensed spectrum)和非授权频谱(英文全称：unlicensed spectrum)。所述授权频谱为经过授权才能使用的频谱，例如，对于商用的移动通信系统，运营商需要拍卖授权频谱，获得授权后，可以使用相应的频谱开展移动通信的运营活动。所述非授权频谱不需要经过授权才能使用的频谱，也就是不需要拍卖，任何运营商可以在非授权频段上部署设备，例如2.4GHz和5GHz频 带上的无线保真WiFi设备。
如图1所示，FBE帧结构的数据帧周期(英文全称：Fixed Frame Period)10包括信道占用周期(英文全称：Channel Occupancy Time)101和信道空闲周期(英文全称：Idle Period)102。
当第一设备采用FBE的工作模式时，如图2所示，在第i数据帧周期10的信道空闲周期102末尾，第一设备采用第i次空闲信道评估(英文全称：Clear Channel Assessment，英文缩写：CCA)检测第i+1数据帧周期10的非授权频谱的信道是否被占用，若第i+1数据帧周期的非授权频谱的信道空闲，第一设备在第i+1数据帧周期10的信道占用周期101占用非授权频谱的信道传输数据；若第i+1数据帧周期10的非授权频谱的信道被占用，第一设备退避第i+1数据帧周期10，在所述第i+1数据帧周期10的信道空闲周期102末尾，第一设备采用第i+1次CCA检测第i+2数据帧周期的非授权频谱的信道是否被占用，以便于第一设备占用第i+2数据帧周期的非授权频谱的信道传输数据。其中，所述CCA检测周期11不小于18微秒(us)。CCA间隔111为第i次CCA检测起始到第i+1次CCA检测起始，或者CCA间隔111为第i次CCA检测结束到第i+1次CCA检测结束。信道空闲周期102至少占数据帧周期10的百分之5。
当第一设备采用LBE的工作模式时，第一设备在占用非授权频谱的信道传输数据之前需要执行CCA退避机制。具体地，第一设备从1到q中随机选择一个整数N作为初始退避值，q可以称为该第一设备的预设退避阈值，q是预先设置的大于1的正整数；如果该第一设备进行CCA检测时确定非授权频谱的信道空闲，则将初始退避值N减1；如果该第一设备进行CCA检测时确定非授权频谱的信道被占用，则保持退避值不变，每次进行CCA检测后确定的退避值可以称为当前退避值Nc，直到当前退避值Nc减为0时，第一设备 占用非授权频谱的信道传输数据。第一设备根据初始退避值以及采用CCA检测将初始退避值递减的过程可以称为CCA退避。
当第一设备采用第一种FBE的工作模式和LBE的工作模式混合工作模式时，第一设备在信道占用周期占用非授权频谱的信道传输数据完成后，按照CCA间隔或者预先设置的时刻，第一设备采用CCA检测非授权频谱的信道。可以通过提高CCA检测的频率，或者缩短CCA检测周期，或者缩短CCA间隔，提高FBE占用非授权频谱的信道的概率，其中，两次CCA间隔不一定等长。如图3所示，第一设备占用数据帧周期10的信道占用周期101的非授权频谱的信道传输数据后，在t1、t2和t3时刻第一设备采用CCA检测非授权频谱的信道，若检测到非授权频谱的信道空闲则占用非授权频谱的信道传输数据，若检测到非授权频谱的信道被占用退避M个CCA检测周期，直到t3时刻当前退避值Nc减为0时，第一设备占用非授权频谱的信道传输数据。特别的M等于1。其中，实箭头为CCA检测到非授权频谱的信道占用，虚箭头为CCA检测到非授权频谱的信道空闲。需要说明的是，第一设备也可以在信道占用周期101结束，信道空闲周期102内采用CCA检测非授权频谱的信道，即t1时刻在信道空闲周期102周期内。
当第一设备采用第二种FBE的工作模式和LBE的工作模式混合工作模式时，如图4所示，第一设备占用数据帧周期10的信道占用周期101的非授权频谱的信道传输数据，释放信道资源后，第一设备根据空闲值Q空闲(off)Q个时隙，同时WiFi设备或LAA-LTE系统中的其他设备可以使用非授权频谱的信道传输数据，在空闲Q个时隙后，第一设备采用LBE的CCA退避机制或者随机选择一个a值，其中，实箭头为CCA检测到确定非授权频谱的信道占用，虚箭头为CCA检测到确定非授权频谱的信道空闲。当非授权频谱的信道被占用时，a值维持不变，但非授权频谱的信道空闲时，a值递减， 直到a减为0，占用非授权频谱的信道传输数据。需要说明的是，Q值可以为第一设备占用非授权频谱的信道的时长，例如10毫秒，也可以为随机值，例如[1，10]毫秒范围内随机选择，但是Q值小于等于第一设备的数据帧周期占用时长。
本发明所述的碰撞可以是LAA-LTE系统中的设备采用上述LBT方式使用同一非授权频谱的信道传输数据时发生的数据碰撞，也可以是LAA-LTE系统中的设备采用上述LBT方式与WiFi设备在同一时刻使用同一非授权频谱的信道传输数据时发生的数据碰撞。在所述LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率的具体方法如下实施例所述。
本发明实施例提供一种数据传输方法，如图5所示，包括：
步骤101、第一设备在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
步骤102、所述第一设备根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据。
这样一来，第一设备在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，再根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据，从而改变发生数据碰撞的设备之间传输数据的竞争关系，使发生数据碰撞的设备之间的竞争时间存在差异性，实现了能够在LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
进一步的，第一设备确定占用非授权频谱的信道传输数据时与其他设备发生碰撞包括：第一设备获取传输数据的反馈信息，该第 一设备确定传输数据的反馈信息是否大于等于预设的传输数据的碰撞门限值，所述传输数据的反馈信息为所述第一设备获取的多个传输数据的反馈信息；若所述第一设备确定所述传输数据的反馈信息大于等于预设的传输数据的碰撞门限值，调整所述第一设备的竞争非授权频谱的信道；若所述第一设备确定所述传输数据的反馈信息小于预设的传输数据的碰撞门限值，不用调整所述第一设备的竞争非授权频谱的信道。
其中，所述传输数据的反馈信息为混合自动重传请求(英文全称：Hybrid Automatic Repeat reQuest，英文缩写：HARQ)，所述HARQ包括否定应答(英文全称：Negative Acknowledgement，英文缩写：NACK)或应答(英文全称：Acknowledgement，英文缩写：ACK)，所述NACK用于指示数据碰撞，所述ACK用于指示数据没有碰撞；或者，所述传输数据的反馈信息为调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数的请求。所述传输数据的碰撞门限值用于指示数据碰撞后接收到的发生数据碰撞的传输数据的反馈信息的个数。可选的，所述传输数据的碰撞门限值可以用于指示数据碰撞后接收到的发生数据碰撞的传输数据的反馈信息的个数与所述接收设备个数的比值。优选的，所述传输数据的碰撞门限值用于指示数据碰撞后接收到的发生数据碰撞的传输数据的反馈信息的个数与接收到的总传输数据的反馈信息的个数的比值，所述总传输数据的反馈信息包括数据碰撞后接收到的发生数据碰撞的传输数据的反馈信息和接收到的未发生数据碰撞的传输数据的反馈信息。
需要说明的是，在一个数据帧周期可能调度LAA-LTE系统中的多个设备，不能凭某个设备的HARQ反馈就确定为发生数据碰撞，可以根据多个设备的HARQ反馈，确定该数据帧周期内发生了数据碰撞。例如数据帧周期内的所有设备都反馈NACK或者调整所 述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数的请求。如果数据帧周期内的一部分设备反馈NACK或者调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数的请求，可以确定该数据帧周期内一部分数据发生了数据碰撞，这种情况下，可以采用重传机制，重传所述的部分数据给相应的设备即可。
具体的，调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数可以理解为：随机调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，具体的，第一设备通过增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻；延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻；通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻；延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻，增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
需要说明的是，所述第一设备发送调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。若所述第一设备连续X次占用所述非授权频谱的信道传输数据，或者所述第一设备连续Y次未能占用所述非授权频谱的信道传输数据，将所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数设置为调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，其中，所述X和Y为正整数。所述调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数为预先设置的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
本发明实施例提供一种数据传输方法，假设第一设备采用FBE的工作模式时发生数据碰撞，如图6所示，包括：
步骤201、第一设备获取多个第二设备发送的传输数据的反馈信息。
步骤202、第一设备确定传输数据的反馈信息是否大于等于预设的传输数据的碰撞门限值。
若所述第一设备确定所述传输数据的反馈信息大于等于预设的传输数据的碰撞门限值，执行步骤203。
若所述第一设备确定所述传输数据的反馈信息小于预设的传输数据的碰撞门限值，执行步骤206。
步骤203、第一设备根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后，随机增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
示例的，如图7所示，假设第一设备占用第i数据帧周期10的信道占用周期101的非授权频谱的信道传输数据，该第i数据帧周期10为T毫秒(ms)，如图7中所示的t0到t3之间，特别的，可以为10毫秒。其中，该第i数据帧周期10的信道占用周期101为T1毫秒，如图7中所示的t0到t2之间。该第i数据帧周期10的信道空闲周期102为T2毫秒，如图7中所示的t2到t3之间。第一设备获取传输数据的反馈信息之后，可以将第i+1数据帧周期10的信道占用周期101减小1/n倍，则信道占用周期101为1/n*T1毫秒，如图7中所示的t3到t4之间。第i+1数据帧周期10的信道空闲周期102仍为T2毫秒，如图7中所示的t4到t5之间。第i+1数据帧周期10为1/n*T1+T2。
如图8所示，假设第一设备占用第i数据帧周期10的信道占用周期101的非授权频谱的信道传输数据，该第i数据帧周期10为T毫秒(ms)，如图8中所示的t0到t3之间，可以为10毫秒。其中，该第i数据帧周期10的信道占用周期101为T1毫秒，如图8中所示的t0到t2之间。该第i数据帧周期10的信道空闲周期102为T2毫秒，如图8中所示的t2到t3之间。第一设备获取传输数据的反馈 信息之后，可以将第i+1数据帧周期10减小1/n倍，则第i+1数据帧周期10为1/n*T毫秒，即将信道占用周期101和信道空闲周期102同时减小为1/n倍，则第i+1数据帧周期10的信道占用周期101为1/n*T1毫秒，则第i+1数据帧周期10的信道空闲周期102为1/n*T2毫秒。需要说明的是，当减小数据帧周期时，可以减小第一设备传输数据的延迟，每个设备都可以更快的传输数据。
同理，第一设备获取传输数据的反馈信息之后，可以将第i+1数据帧周期10增大m倍，则第i+1数据帧周期10为m*T毫秒；或者，将第i+1数据帧周期10的信道占用周期101增大m倍，则第i+1数据帧周期10的信道占用周期101为m*T1毫秒。本发明对改变数据帧周期或信道占用周期长度的方法不做具体限定。
其中，m和n可以相等也可以不等。减小倍数n和放大倍数m为[1，w]之间的随机数。最大值w可以根据碰撞次数递增。例如，第一设备第一次发生数据碰撞后w＝2，第一设备第二次发生数据碰撞后w＝4，第一设备第三次发生数据碰撞后w＝6等等。
进一步的，为了保障第一设备传输数据的公平性，当第一设备连续X次占用非授权频谱的信道传输数据之后，或者当第一设备连续Y次未能占用所述非授权频谱的信道传输数据之后，第一设备还可以将调整后的最大值w恢复为调整前的任一最大值w。例如，此时w＝6，第一设备当第一设备连续X次占用非授权频谱的信道传输数据，或者当连续Y次未能占用所述非授权频谱的信道传输数据之后，w重置为2。特别的，w还可以重置为初始值1。其中，所示X和所述Y均为正整数，可以由系统配置(第一设备配置、接收设备配置或第三方设备配置等)，或者随机生成。
步骤204、第一设备通过授权频谱或非授权频谱发送调整后的非授权频谱的信道的空闲信道评估CCA检测时刻。
第一设备可以通过授权频谱或辅助授权频谱向用户终端或基站 发送调整后的非授权频谱的信道的空闲信道评估CCA检测时刻。
步骤205、第一设备采用调整后的非授权频谱的信道的空闲信道评估CCA检测时刻抢占非授权频谱的信道。
步骤206、第一设备采用原非授权频谱的信道的空闲信道评估CCA检测时刻抢占非授权频谱的信道。
这样一来，第一设备获取传输数据的反馈信息，根据该传输数据的反馈信息确定该第一设备占用非授权频谱的信道传输的数据发生数据碰撞后，随机增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻，使第一设备尽可能的在时间域上错开传输数据，实现调整第一设备的竞争非授权频谱的信道时刻，从而改变与所述第一设备发生数据碰撞的第一设备之间竞争关系，使发生数据碰撞的第一设备之间的竞争时间存在差异性，实现了能够在LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
本发明实施例提供一种数据传输方法，假设第一设备采用FBE的工作模式时发生数据碰撞，如图9所示，包括：
步骤301、第一设备获取多个第二设备发送的传输数据的反馈信息。
步骤302、第一设备确定传输数据的反馈信息是否大于或等于预设的传输数据的碰撞门限值。
若所述第一设备确定所述传输数据的反馈信息大于等于预设的传输数据的碰撞门限值，执行步骤303。
若所述第一设备确定所述传输数据的反馈信息小于预设的传输数据的碰撞门限值，执行步骤306。
步骤303、第一设备根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后，随机延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
示例的，如图10所示，第i数据帧周期10包括信道占用周期101和信道空闲周期102。假设第一设备占用第i数据帧周期10的信道占用周期101的非授权频谱的信道传输数据，然后，可以在信道空闲周期102的末尾t1时刻，采用CCA检测第i+1数据帧周期10的非授权频谱的信道。但是，第一设备根据获取到的传输数据的反馈信息确定该第一设备占用第i数据帧周期10的非授权频谱的信道传输的数据发生数据碰撞后，可以将CCA检测第i+1数据帧周期10的非授权频谱的信道的时刻延迟到t4时刻。实际应用中，可以延迟z个子帧、z个时隙、z个OFDM符号、或者z个采样时间间隔Ts的倍数，使得CCA检测数据帧周期的非授权频谱的信道时刻不在数据帧周期的信道空闲周期的末尾时刻。特别的，所述z个采样时间间隔Ts的倍数可以为z个624*Ts。
其中，延迟倍数z为[0，w]之间的随机数。最大值w可以根据每次碰撞之后递增。例如，w＝2r，r为碰撞次数。w的最大值可以根据具体情况设定，w＝256，本发明对w的取值和递增方法不做具体限定。
进一步的，为了保障第一设备传输数据的公平性，当第一设备连续X次占用非授权频谱的信道传输数据之后，或者当第一设备连续Y次未能占用所述非授权频谱的信道传输数据之后，第一设备还可以将调整后的最大值w恢复为调整前的任一最大值w。例如，此时w＝6，第一设备当第一设备连续X次占用非授权频谱的信道传输数据，或者当连续Y次未能占用所述非授权频谱的信道传输数据之后，w重置为2。特别的，w还可以重置为初始值0。其中，所示X和所述Y均为正整数，可以由系统配置(第一设备配置、接收设备配置或第三方设备配置等)，或者随机生成。
需要说明的是，因为没有调整数据帧周期或信道占用周期。第一设备只要预先设置发生数据碰撞后可能发送数据的时刻。例如子 帧的开始时刻，或者OFDM符号的开始时刻。接收设备在可能的数据发送时刻检测信道信号，即可以完成接收。
步骤304、第一设备通过授权频谱或非授权频谱发送调整后的非授权频谱的信道的空闲信道评估CCA检测时刻。
步骤305、第一设备采用调整后的非授权频谱的信道的空闲信道评估CCA检测时刻抢占非授权频谱的信道。
步骤306、第一设备采用原非授权频谱的信道的空闲信道评估CCA检测时刻抢占非授权频谱的信道。
这样一来，第一设备获取传输数据的反馈信息，根据该传输数据的反馈信息确定该第一设备占用非授权频谱的信道传输的数据发生数据碰撞后，随机延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻，使第一设备尽可能的在时间域上错开传输数据，实现调整第一设备的竞争非授权频谱的信道时刻，从而改变与所述第一设备发生数据碰撞的第一设备之间竞争关系，使发生数据碰撞的第一设备之间的竞争时间存在差异性，实现了能够在LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
本发明实施例提供一种数据传输方法，假设第一设备采用LBE的工作模式时发生数据碰撞，如图11所示，包括：
步骤401、第一设备获取多个第二设备发送的传输数据的反馈信息。
步骤402、第一设备确定传输数据的反馈信息是否大于等于预设的传输数据的碰撞门限值。
若所述第一设备确定所述传输数据的反馈信息大于等于预设的传输数据的碰撞门限值，执行步骤403。
若所述第一设备确定所述传输数据的反馈信息小于预设的传输数据的碰撞门限值，执行步骤406。
步骤403、第一设备根据所述传输数据的反馈信息确定所述第一设备占用非授权频谱的信道传输数据时与其他设备发生碰撞后，根据碰撞次数随机增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
示例的，第一设备根据获取到的传输数据的反馈信息确定该第一设备占用第i数据帧周期10的非授权频谱的信道传输的数据发生数据碰撞后，可以根据碰撞次数随机增大或减小LBE的CCA退避机制的q值。假设CCA退避机制的q值的初始值为q1，当随机增大LBE的CCA退避机制的q值时，可以将q值设置为q＝q1*r，所述r为碰撞次数加1。当随机减小LBE的CCA退避机制的q值时，可以将q值设置为q＝1/r*q1。
需要说明的是，当随机增大LBE的CCA退避机制的q值时，若增大后的q值超过最大值，增大后的q值取最大值；当随机减小LBE的CCA退避机制的q值时，若减小后的q值超过最小值，减小后的q值取最小值，其中，q值的最大值可以是32，q值的最小值可以是4。本发明对q值的最大值和q值的最小值不做具体限定。
CCA退避机制中的初始退避值N可以从[1，q]之间随机选取，第一设备按照初始退避值N执行CCA退避机制，直到当前退避值Nc为0时传输数据。特别的，信道占用周期可以与q值有关，例如信道占用周期为(13/32)乘以q个毫秒，这样，调整q值的同时，数据帧周期也发生变化。本发明对具体的调整CCA退避机制的q值的方式不做限定。
在第一设备调整q值之后，第一设备从[1，q]之间随机选取初始退避值N。假设所述初始退避值N大于相对于第一设备调整q值之前的初始退避值N，由于退避时长为N*CCA检测周期，可以根据在第一设备调整q值之后随机选取的初始退避值N调整退避时长。示例的，假设q值为30，第一设备调整q值之前的初始退避值N为 2，退避时长为2*CCA检测周期，第一设备调整q值为60，在第一设备调整q值之后，第一设备从[1，60]之间随机选取初始退避值N，该第一设备调整q值之后的初始退避值N为6，则退避时长为6*CCA检测周期。
进一步的，为了保障第一设备传输数据的公平性，当第一设备连续X次占用非授权频谱的信道传输数据之后，或者当第一设备连续Y次未能占用所述非授权频谱的信道传输数据之后，第一设备还可以将调整后的q值恢复为调整前的任一q值。例如，此时q＝q1*6，第一设备当第一设备连续X次占用非授权频谱的信道传输数据，或者当连续Y次未能占用所述非授权频谱的信道传输数据之后，将q值重置为q1*3。特别的，还可以将q值重置为q1。其中，所示X和所述Y均为正整数，可以由系统配置(第一设备配置、接收设备配置或第三方设备配置等)，或者随机生成。
步骤404、第一设备通过授权频谱或非授权频谱发送调整后的非授权频谱的信道的空闲信道评估CCA检测次数。
第一设备可以通过授权频谱或辅助授权频谱向用户终端或基站发送调整后的CCA退避机制的q值或退避时长。
步骤405、第一设备采用调整后的非授权频谱的信道的空闲信道评估CCA检测次数抢占非授权频谱的信道。
步骤406、第一设备采用原非授权频谱的信道的空闲信道评估CCA检测次数抢占非授权频谱的信道。
这样一来，第一设备获取传输数据的反馈信息，根据该传输数据的反馈信息确定所述第一设备占用非授权频谱的信道传输的数据发生数据碰撞后，根据碰撞次数随机增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数，使第一设备尽可能的在时间域上错开传输数据，实现调整第一设备的竞争非授权频谱的信道时刻，从而改变与所述第一设备发生数据碰撞的第一设备之间竞争关 系，使发生数据碰撞的第一设备之间的竞争时间存在差异性，实现了能够在LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
本发明实施例提供一种数据传输方法，假设第一设备采用第一种FBE的工作模式和LBE的工作模式混合工作模式时发生数据碰撞，如图12所示，包括：
步骤501、第一设备获取多个第二设备发送的传输数据的反馈信息。
步骤502、第一设备确定传输数据的反馈信息是否大于等于预设的传输数据的碰撞门限值。
若所述第一设备确定所述传输数据的反馈信息大于等于预设的传输数据的碰撞门限值，执行步骤503。
若所述第一设备确定所述传输数据的反馈信息小于预设的传输数据的碰撞门限值，执行步骤506。
步骤503、第一设备根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后，根据数据碰撞次数随机通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
第一设备根据数据碰撞次数随机增大或减小CCA检测间隔，或者第一设备还可以根据数据碰撞次数随机增大或减小CCA检测周期。
示例的，如图13所示，第i数据帧周期10包括信道占用周期101和信道空闲周期102。假设第一设备占用第i数据帧周期10的信道占用周期101的非授权频谱的信道传输数据，然后，可以在信道空闲周期102的末尾t1时刻，采用CCA检测第i+1数据帧周期10的非授权频谱的信道，执行CCA退避机制。假设初始退避值N为1，若CCA检测第i+1数据帧周期10的非授权频谱的信道被占 用，初始退避值N不变，在t2时刻，第一设备再检测第i+1数据帧周期10的非授权频谱的信道，若CCA检测第i+1数据帧周期10的非授权频谱的信道空闲，初始退避值N减1，得到当前退避值Nc为0，则第一设备占用第i+1数据帧周期10的信道占用周期101的非授权频谱的信道传输数据。
但是，第一设备根据获取到的传输数据的反馈信息确定该第一设备占用第i数据帧周期10的非授权频谱的信道传输的数据发生数据碰撞后，可以根据数据碰撞次数随机增大或者减小CCA退避机制中的CCA检测间隔。假设初始CCA检测间隔为D1，将初始CCA检测间隔增大m倍，则CCA检测间隔为D1*m，或者，将初始CCA检测间隔减小1/n倍，则初始CCA检测间隔为1/n*D1。如图13所示，将CCA间隔为t1到t2增大为t1到t4。在t1时刻，检测第i+1数据帧周期10的非授权频谱的信道被占用后，初始退避值N不变，在t4时刻，若CCA检测第i+1数据帧周期10的非授权频谱的信道空闲，初始退避值N减1，得到当前退避值Nc为0，则第一设备占用第i+1数据帧周期10的信道占用周期101的非授权频谱的信道传输数据。
其中，m和n可以相等也可以不等。减小倍数n和放大倍数m为[1，w]之间的随机数。最大值w可以根据每次碰撞之后递增。最大值w可以为w＝r，或者w＝r2，r可以为碰撞次数加1，w的最大值可根据具体情况设定，例如，w＝10，或者w＝256。本发明对CCA间隔的具体的调整方式不做限定。
进一步的，为了保障第一设备传输数据的公平性，当第一设备连续X次占用非授权频谱的信道传输数据之后，或者当第一设备连续Y次未能占用所述非授权频谱的信道传输数据之后，第一设备还可以将调整后的最大值w恢复为调整前的任一最大值w。例如，此时w＝6，第一设备当第一设备连续X次占用非授权频谱的信道传输 数据，或者当连续Y次未能占用所述非授权频谱的信道传输数据之后，w重置为2。特别的，w还可以重置为初始值1。其中，所示X和所述Y均为正整数，可以由系统配置(第一设备配置、接收设备配置或第三方设备配置等)，或者随机生成。
步骤504、第一设备通过授权频谱或非授权频谱发送调整后的非授权频谱的信道的空闲信道评估CCA检测时刻。
步骤505、第一设备采用调整后的非授权频谱的信道的空闲信道评估CCA检测时刻抢占非授权频谱的信道。
步骤506、第一设备采用原非授权频谱的信道的空闲信道评估CCA检测时刻抢占非授权频谱的信道。
这样一来，第一设备获取传输数据的反馈信息，根据该传输数据的反馈信息确定所述第一设备占用非授权频谱的信道传输的数据发生数据碰撞后，根据数据碰撞次数随机通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻，使第一设备尽可能的在时间域上错开传输数据，实现调整第一设备的竞争非授权频谱的信道时刻，从而改变与所述第一设备发生数据碰撞的第一设备之间竞争关系，使发生数据碰撞的第一设备之间的竞争时间存在差异性，实现了能够在LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
本发明实施例提供一种数据传输方法，假设第一设备采用第二种FBE的工作模式和LBE的工作模式混合工作模式时发生数据碰撞，如图14所示，包括：
步骤601、第一设备获取多个第二设备发送的传输数据的反馈信息。
步骤602、第一设备确定传输数据的反馈信息是否大于等于预设的传输数据的碰撞门限值。
若所述第一设备确定所述传输数据的反馈信息大于等于预设的传输数据的碰撞门限值，执行步骤603。
若所述第一设备确定所述传输数据的反馈信息小于预设的传输数据的碰撞门限值，执行步骤606。
步骤603、第一设备根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后，延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻，根据碰撞的次数增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
示例的，如图15所示，第i数据帧周期10包括信道占用周期101和信道空闲周期102。假设第一设备占用第i数据帧周期10的信道占用周期101的非授权频谱的信道传输数据，然后，在数据传输完成后，根据预先设置的空闲值Q1，第一设备等待Q1个时隙，在t1时刻执行CCA退避机制，采用CCA检测第i+1数据帧周期10的非授权频谱的信道，若CCA检测第i+1数据帧周期10的非授权频谱的信道被占用，初始退避值N不变，继续检测非授权频谱的信道，假设在tm时刻CCA检测第i+1数据帧周期10的非授权频谱的信道空闲，初始退避值N减1，且当前退避值Nc为0，则第一设备占用第i+1数据帧周期10的信道占用周期101的非授权频谱的信道传输数据。
但是，第一设备根据获取到的传输数据的反馈信息确定该第一设备占用第i数据帧周期10的非授权频谱的信道传输的数据发生数据碰撞后，可以根据数据碰撞次数随机增大或者减小空闲值Q。假设初始空闲值Q为Q1，将初始空闲值Q1增大m倍为Q1*m，或者，将初始空闲值Q1减小1/n倍为1/n*Q1。如图15所示，将初始空闲值Q1增大m倍为Q1*m。第一设备再执行CCA退避机制，在tn时刻，若CCA确定第i+1数据帧周期10的非授权频谱的信道空闲，初始退避值N减1，且当前退避值Nc为0，则第一设备占用第i+1 数据帧周期10的信道占用周期101的非授权频谱的信道传输数据。
其中，m和n可以相等也可以不等。减小倍数n和放大倍数m为[1，w]之间的随机数。最大值w可以根据每次碰撞之后递增。最大值w可以为w＝r，或者w＝r2，r可以为碰撞次数加1，w的最大值可根据具体情况设定，例如，w＝10，或者w＝256。本发明对增大或减小空闲值Q的具体的调整方式不做限定。
进一步的，为了保障第一设备传输数据的公平性，当第一设备连续X次占用非授权频谱的信道传输数据之后，或者当第一设备连续Y次未能占用所述非授权频谱的信道传输数据之后，第一设备还可以将调整后的最大值w恢复为调整前的任一最大值w。例如，此时w＝6，第一设备当第一设备连续X次占用非授权频谱的信道传输数据，或者当连续Y次未能占用所述非授权频谱的信道传输数据占用之后，w重置为2。特别的，w还可以重置为初始值1。其中，所示X和所述Y均为正整数，可以由系统配置(第一设备配置、接收设备配置或第三方设备配置等)，或者随机生成。
步骤604、第一设备通过授权频谱或非授权频谱发送调整后的非授权频谱的信道的空闲信道评估CCA检测时刻。
步骤605、第一设备采用调整后的非授权频谱的信道的空闲信道评估CCA检测时刻抢占非授权频谱的信道。
步骤606、第一设备采用原非授权频谱的信道的空闲信道评估CCA检测时刻抢占非授权频谱的信道。
这样一来，第一设备获取传输数据的反馈信息，根据该传输数据的反馈信息确定占用非授权频谱的信道传输的数据发生数据碰撞后，延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻，根据碰撞的次数增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数，使第一设备尽可能的在时间域上错开传输数据，实现调整第一设备的竞争非授权频谱的信道时刻，从而改变与所述第 一设备发生数据碰撞的第一设备之间竞争关系，使发生数据碰撞的第一设备之间的竞争时间存在差异性，实现了能够在LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
本发明实施例提供一种第一设备70，如图16所示，包括：
处理单元701，用于在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数；
传输单元702，用于根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据。
这样一来，第一设备在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，再根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据，从而改变发生数据碰撞的设备之间传输数据的竞争关系，使发生数据碰撞的设备之间的竞争时间存在差异性，实现了能够在LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
所述处理单元701具体用于：
随机调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
所述处理单元701具体用于：
通过增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
所述处理单元701具体用于：
延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
所述处理单元701具体用于：
通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
所述处理单元701具体用于：
增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
所述处理单元701还用于：
延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
所述处理单元701具体用于：
获取传输数据的反馈信息，根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞。
所述传输数据的反馈信息为混合自动重传请求HARQ，所述HARQ包括否定应答NACK或应答ACK，所述NACK用于指示数据碰撞，所述ACK用于指示数据没有碰撞；或者，所述传输数据的反馈信息为调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数的请求。
如图17所示，所述第一设备70还包括：
发射单元703，用于发送调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
所述处理单元701还用于：
若所述第一设备连续X次占用所述非授权频谱的信道传输数据，或者所述第一设备连续Y次未能占用所述非授权频谱的信道传输数据，将所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数设置为调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，其中，所述X和Y为正整数。
所述调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数为预先设置的非授权频谱的信道的空闲信道评估CCA 检测时刻或检测次数。
本发明实施例提供一种第一设备80，如图18所示，包括：
存储器801，用于存储程序代码；
处理器802，用于调用所述存储器901存储的程序代码执行如下方法：在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数；
所述处理器802执行的方法还包括：
根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据。
这样一来，第一设备在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，再根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据，从而改变发生数据碰撞的设备之间传输数据的竞争关系，使发生数据碰撞的设备之间的竞争时间存在差异性，实现了能够在LAA-LTE系统中的设备抢占非授权频谱发生碰撞之后，有效降低再次发生碰撞的概率。
所述处理器802执行的方法包括：
随机调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
所述处理器802执行的方法包括：
通过增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
所述处理器802执行的方法包括：
延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
所述处理器802执行的方法包括：
通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
所述处理器802执行的方法包括：
增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
所述处理器802执行的方法还包括：
延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
所述处理器802执行的方法包括：
获取传输数据的反馈信息，根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞。
所述传输数据的反馈信息为混合自动重传请求HARQ，所述HARQ包括否定应答NACK或应答ACK，所述NACK用于指示数据碰撞，所述ACK用于指示数据没有碰撞；或者，所述传输数据的反馈信息为调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数的请求。
如图19所示，所述第一设备80还包括：
发射机803，用于发送调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
所述处理器802执行的方法还包括：
若所述第一设备连续X次占用所述非授权频谱的信道传输数据，或者所述第一设备连续Y次未能占用所述非授权频谱的信道传输数据，将所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数设置为调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，其中，所述X和Y为正整数。
所述调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数为预先设置的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
需要说明的是，第二设备可以接收第一设备发送的调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，使得第二设备在所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻接收所述第一设备传输的数据。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置及方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理包括，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述 方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (32)

  1. 一种数据传输方法，其特征在于，包括：
    第一设备在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数；
    所述第一设备根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据。
  2. 根据权利要求1所述的数据传输方法，其特征在于，所述第一设备调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数包括：
    所述第一设备随机调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
  3. 根据权利要求1所述的数据传输方法，其特征在于，所述第一设备调整所述非授权频谱的信道的空闲信道评估CCA检测时刻包括：
    所述第一设备通过增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  4. 根据权利要求1所述的数据传输方法，其特征在于，所述第一设备调整所述非授权频谱的信道的空闲信道评估CCA检测时刻包括：
    所述第一设备延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  5. 根据权利要求1所述的数据传输方法，其特征在于，所述第一设备调整所述非授权频谱的信道的空闲信道评估CCA检测时刻包括：
    所述第一设备通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  6. 根据权利要求1所述的数据传输方法，其特征在于，所述第 一设备调整所述非授权频谱的信道的空闲信道评估CCA检测次数包括：
    所述第一设备增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
  7. 根据权利要求6所述的数据传输方法，其特征在于，所述第一设备增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数之前，还包括：
    所述第一设备延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  8. 根据权利要求1-7任意一项所述的数据传输方法，其特征在于，所述第一设备确定占用非授权频谱的信道传输数据时与其他设备发生碰撞，包括：
    所述第一设备获取传输数据的反馈信息，根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞。
  9. 根据权利要求8所述的数据传输方法，其特征在于，所述传输数据的反馈信息为混合自动重传请求HARQ，所述HARQ包括否定应答NACK或应答ACK，所述NACK用于指示数据碰撞，所述ACK用于指示数据没有碰撞；或者，所述传输数据的反馈信息为调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数的请求。
  10. 根据权利要求1-9中任意一项所述数据传输方法，其特征在于，还包括：
    所述第一设备发送调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
  11. 根据权利要求1-10中任意一项所述的数据传输方法，其特征在于，在所述第一设备根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据之后，所述方法还包括：
    若所述第一设备连续X次占用所述非授权频谱的信道传输数 据，或者所述第一设备连续Y次未能占用所述非授权频谱的信道传输数据，将所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数设置为调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，其中，所述X和Y为正整数。
  12. 根据权利要求11所述的数据传输方法，其特征在于，所述调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数为预先设置的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
  13. 一种第一设备，其特征在于，包括：
    处理单元，用于在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数；
    传输单元，用于根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数占用所述非授权频谱的信道传输数据。
  14. 根据权利要求13所述的第一设备，其特征在于，所述处理单元具体用于：
    随机调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
  15. 根据权利要求13所述的第一设备，其特征在于，所述处理单元具体用于：
    通过增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  16. 根据权利要求13所述的第一设备，其特征在于，所述处理单元具体用于：
    延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  17. 根据权利要求13所述的第一设备，其特征在于，所述处理单元具体用于：
    通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  18. 根据权利要求13所述的第一设备，其特征在于，所述处理单元具体用于：
    增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
  19. 根据权利要求18所述的第一设备，其特征在于，所述处理单元还用于：
    延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  20. 根据权利要求13-19任意一项权利要求所述的第一设备，其特征在于，所述处理单元具体用于：
    获取传输数据的反馈信息，根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞。
  21. 根据权利要求20所述的第一设备，其特征在于，所述第一设备还包括：
    发射单元，用于发送调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
  22. 根据权利要求13-21任意一项权利要求所述的第一设备，其特征在于，所述处理单元还用于：
    若所述第一设备连续X次占用所述非授权频谱的信道传输数据，或者所述第一设备连续Y次未能占用所述非授权频谱的信道传输数据，将所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数设置为调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，其中，所述X和Y为正整数。
  23. 一种第一设备，其特征在于，包括：
    存储器，用于存储程序代码；
    处理器，用于调用所述存储器存储的程序代码执行如下方法：在确定占用非授权频谱的信道传输数据时与其他设备发生碰撞后调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数；
    所述处理器执行的方法还包括：
    根据调整后的所述非授权频谱的信道的空闲信道评估CCA检测 时刻或检测次数占用所述非授权频谱的信道传输数据。
  24. 根据权利要求23所述的第一设备，其特征在于，所述处理器执行的方法包括：
    随机调整所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
  25. 根据权利要求23所述的第一设备，其特征在于，所述处理器执行的方法包括：
    通过增大或减小数据帧长度来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  26. 根据权利要求23所述的第一设备，其特征在于，所述处理器执行的方法包括：
    延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  27. 根据权利要求23所述的第一设备，其特征在于，所述处理器执行的方法包括：
    通过增大或减小空闲信道评估CCA检测间隔来调整所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  28. 根据权利要求23所述的第一设备，其特征在于，所述处理器执行的方法包括：
    增加或减少所述非授权频谱的信道的空闲信道评估CCA检测次数。
  29. 根据权利要求28所述的第一设备，其特征在于，所述处理器执行的方法还包括：
    延迟所述非授权频谱的信道的空闲信道评估CCA检测时刻。
  30. 根据权利要求23-29任意一项权利要求所述的第一设备，其特征在于，所述处理器执行的方法包括：
    获取传输数据的反馈信息，根据所述传输数据的反馈信息确定占用非授权频谱的信道传输数据时与其他设备发生碰撞。
  31. 根据权利要求30所述的第一设备，其特征在于，所述第一设备还包括：
    发射机，用于发送调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数。
  32. 根据权利要求23-31任意一项权利要求所述的第一设备，其特征在于，所述处理器执行的方法还包括：
    若所述第一设备连续X次占用所述非授权频谱的信道传输数据，或者所述第一设备连续Y次未能占用所述非授权频谱的信道传输数据，将所述调整后的所述非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数设置为调整前的非授权频谱的信道的空闲信道评估CCA检测时刻或检测次数，其中，所述X和Y为正整数。
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