WO2018036260A1 - 数据传输方法、装置及系统 - Google Patents

数据传输方法、装置及系统 Download PDF

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Publication number
WO2018036260A1
WO2018036260A1 PCT/CN2017/090045 CN2017090045W WO2018036260A1 WO 2018036260 A1 WO2018036260 A1 WO 2018036260A1 CN 2017090045 W CN2017090045 W CN 2017090045W WO 2018036260 A1 WO2018036260 A1 WO 2018036260A1
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Prior art keywords
cca detection
initial
channel
channel set
channels
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PCT/CN2017/090045
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English (en)
French (fr)
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吴霁
罗俊
林英沛
苏宏家
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP17842684.7A priority Critical patent/EP3474623B1/en
Publication of WO2018036260A1 publication Critical patent/WO2018036260A1/zh
Priority to US16/283,184 priority patent/US20190191458A1/en

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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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present application relates to the field of communications, and in particular, to a data transmission method, apparatus, and system.
  • the device In communication standard 802.11 (including communication standard 802.11ad and communication standard 802.11ay), the device is capable of transmitting data on a corresponding channel having a frequency of 60 gigahertz (GHz).
  • GHz gigahertz
  • the 802.11 communication device when an 802.11 communication device needs to transmit data, the 802.11 communication device first needs to determine a plurality of channels that are currently accessible, and then can determine a target channel of currently transmittable data among a plurality of currently accessible channels, and Data is transmitted on the target channel. Specifically, when the transmitting end is currently transmitting the target channel of the data, the transmitting end may first randomly determine the number of slots of each channel of the currently accessible multiple channels, and adopt a type according to the number of slots of each channel.
  • a clear channel assessment (CCA) detection mechanism performs CCA detection on each channel to determine whether the state of each channel is idle or busy, and determines a channel in which the CCA detection result is idle as the target channel.
  • CCA clear channel assessment
  • NRU a high-frequency communication device in NR
  • Data is transmitted on a higher frequency, small bandwidth channel, such as 60 GHz.
  • the 802.11 communication device also transmits data on the corresponding channel with a frequency of 60 GHz, and the bandwidth of the channel used by the 802.11 communication device for transmitting data is much larger than the bandwidth of the channel used by the NRU communication device to transmit data, the 802.11 communication device is transmitting.
  • the CCA detection mechanism used in the data cannot be applied to the NRU communication device, and the 802.11 communication device and the NRU communication device are more likely to collide when transmitting data. Therefore, the NRU communication device and the 802.11 communication device cannot be mutually compatible.
  • the present application provides a data transmission method, device, and system.
  • the technical solution is as follows:
  • a data transmission method for a communication device, the method comprising:
  • each channel in the initial channel set being a subchannel of the preset channel
  • the auxiliary CCA detection result is idle, the transmission of the target data is performed on the target channel.
  • the auxiliary channel is subjected to the auxiliary CCA detection, and when the auxiliary CCA detection result is idle, The target data is transmitted on the target channel. That is, the NRU communication device needs to detect after determining the target channel for transmitting data. Whether the 802.11 communication device transmits data on a large bandwidth channel corresponding to the same frequency, and only when the 802.11 communication device does not transmit data on the large bandwidth channel of the same frequency, data is transmitted on the target channel, thereby effectively avoiding transmission. In the target data, the NRU communication device collides with the 802.11 communication device, and the NRU communication device and the 802.11 communication device are mutually compatible.
  • the frequency corresponding to the preset channel is 60 GHz, and the bandwidth of the preset channel is 2.16 GHz.
  • a data transmission method for a communication device, the method comprising:
  • the frequency corresponding to the preset channel is 60 GHz, and the bandwidth of the preset channel is 2.16 GHz;
  • the initial channel set includes all channels currently accessible by the communication device, and each channel in the initial channel set is the preset channel Subchannel
  • Transmission of target data is performed on the target channel.
  • the NRU communication device receives the preamble transmitted by the FG60 communication device, determines all channels currently accessible, and determines the target channel that the initial CCA detection result is idle, and transmits the target data on the target channel. That is, the NRU communication device transmits data on the target channel after determining that the 802.11 communication device is not transmitting data, and after determining that the FG60 communication device is not transmitting data on the target channel, effectively avoiding NRU communication when transmitting the target data.
  • the device collides with the 802.11 communication device and the FG60 communication device, and the NRU communication device is compatible with both the 802.11 communication device and the FG60 communication device.
  • the FG60 communication device can contend for the channel on the preset channel with the corresponding frequency of 60 GHz and the bandwidth of 2.16 GHz, or after competing for the preset channel. Transmitting data on the preset channel; after the FG60 communication device transmits the preamble, the FG60 communication device needs to contend for a channel on a small bandwidth corresponding to a frequency of 60 GHz, and after contending for the channel, the channel in the small bandwidth
  • the upper transmission data for example, the small bandwidth channel of the FG60 communication device transmitting data may be the same as the bandwidth of the channel through which the NRU communication device transmits data. That is, after the FG60 communication device transmits the preamble, the FG60 communication device needs to compete with the NRU communication device on the same bandwidth channel and transmit data after competing for the channel.
  • the preamble includes a network allocation loss NAV for indicating a remaining time of the data transmission, where the transmitting the target data on the target channel includes:
  • the transmission of the target data is performed on the target channel according to the remaining time of the data transmission indicated by the NAV.
  • the method further includes:
  • the priority of the initial data is: a first priority in the EDCA mechanism, and a second One of the priority, the third priority, and the fourth priority, or the priority of the distributed coordination function DCF mechanism.
  • the performing an initial idle channel assessment CCA detection on all channels in the initial channel set where include:
  • the NRU communication device stops performing the first CCA on the initial channel set. Detecting, and starting to perform the second CCA detection on the initial channel set until the second CCA detection result is idle, and then performing the first CCA detection on the initial channel set, so that the channel can be effectively utilized, thereby The bandwidth of the channel for transmitting data is increased, and the efficiency of data transmission is improved, which is more suitable for an enhanced data offload (eMBB offloading) scenario in the NRU.
  • eMBB offloading enhanced data offload
  • Determining that the initial CCA detection result in the initial channel set is an idle channel is a target channel, including:
  • the method further includes:
  • the performing the second CCA detection on the initial channel set repeatedly until the second CCA detection result is idle, and then continuing the first CCA detection including:
  • the initial channel set includes at least two channels
  • the repeatedly performing second CCA detection on the initial channel set until the second CCA detection result is idle, and then continuing the first CCA detection include:
  • the second subset is composed of one channel of the initial channel set, performing second CCA detection on the second subset repeatedly until the second CCA detection result of the second subset is idle, and then The first CCA detection is continued.
  • the method before the performing the first CCA detection on all the channels in the initial channel set, the method further includes:
  • Performing the first CCA detection on all channels in the initial channel set including:
  • the threshold of the CCA detection determined in the related art is not related to the number of channels participating in the CCA detection, and the threshold of the CCA detection cannot be applied to different scenarios.
  • the thresholds of the initial CCA detection determined in the present application are all related to the number of channels participating in the CCA detection, that is, the threshold of the initial CCA detection determined in the present application can be better adapted to different scenarios.
  • the method further includes:
  • Performing the first CCA detection on all channels in the initial channel set including:
  • Determining the first threshold according to the number of channels in the initial channel set and the first threshold determining formula including:
  • Thresh_max is the second threshold
  • T max ⁇ 75+10*log 10 BW
  • log 10 BW is the logarithm of BW at base 10
  • BW is The bandwidth corresponding to the initial channel set
  • dB decibel
  • I is the interference value of the different system device
  • ⁇ I is the sum of the interference values of all the different system devices in the preset range
  • X r is the maximum allowable emission threshold.
  • the time period of the first CCA detection includes a fixed period of 16 us and n slots of 9 us, where n is an integer greater than or equal to zero.
  • the preset time period is 9 us or 25 us.
  • a data transmission apparatus for a communication device, the data transmission apparatus comprising at least one module, the at least one module for implementing any one of the above first aspect or the first aspect The data transmission method described in the manner.
  • a data transmission apparatus for a communication device, the data transmission apparatus comprising at least one module, the at least one module for implementing any one of the foregoing second aspect or the second aspect The data transmission method described in the manner.
  • a data transmission apparatus for a communication device, the data transmission apparatus comprising: at least one processor, at least one network interface, a memory, and at least one bus, the memory and the network interface respectively passing through the bus and the processor Connected; the processor is configured to execute instructions stored in the memory; the processor The data transmission method provided by any of the possible implementations of the first aspect or the first aspect.
  • a data transmission apparatus for a communication device, the data transmission apparatus comprising: at least one processor, at least one network interface, a memory, and at least one bus, the memory and the network interface respectively passing through the bus and the processor Connected; the processor is configured to execute the instructions stored in the memory; the processor implements the data transfer method provided by any of the possible implementations of the second aspect or the second aspect by executing the instructions.
  • a data transmission system comprising a communication device, the communication device comprising the data transmission device of the third aspect, the fourth aspect, the fifth aspect or the sixth aspect.
  • a computer readable storage medium in an eighth aspect, storing instructions for causing a computer to perform the first aspect or the second aspect when the computer readable storage medium is run on a computer The method described in the aspects.
  • a computer program product comprising instructions for causing a computer to perform the method of the first aspect or the second aspect described above when the computer program product is run on a computer.
  • the present application provides a data transmission method, apparatus, and system, in which a communication device determines all channels currently accessible, and determines a target channel whose initial CCA detection result is idle. After that, the auxiliary channel is subjected to the auxiliary CCA detection, and the target data is transmitted on the target channel when the auxiliary CCA detection result is idle. That is, after determining the target channel for transmitting data, the NRU communication device needs to detect whether the 802.11 communication device transmits data on a large bandwidth channel corresponding to the same frequency, and only if the 802.11 communication device does not transmit data on the large bandwidth channel of the same frequency. When the data is transmitted on the target channel, the NRU communication device collides with the 802.11 communication device when the target data is transmitted, and the NRU communication device and the 802.11 communication device are mutually compatible.
  • FIG. 1 is a schematic diagram of a data transmission scenario according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a method for data transmission according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for another data transmission method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of CCA detection according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of another CCA detection according to an embodiment of the present invention.
  • FIG. 7 is still another schematic diagram of CCA detection according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of still another CCA detection according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of another data transmission scenario according to an embodiment of the present invention.
  • FIG. 10 is a flowchart of still another method for data transmission according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of still another data transmission apparatus according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of still another data transmission apparatus according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic structural diagram of a data transmission apparatus according to another embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of another data transmission apparatus according to another embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of still another data transmission apparatus according to another embodiment of the present invention.
  • FIG. 17 is a schematic structural diagram of still another data transmission apparatus according to another embodiment of the present invention.
  • FIG. 18 is a schematic structural diagram of a data transmission apparatus according to another embodiment of the present invention.
  • the NRU communication device 01 can transmit data on a channel corresponding to a small bandwidth of 60 GHz (such as a bandwidth of 200 MHz); an 802.11ad communication device 11 may transmit data over a large bandwidth corresponding to 60 GHz (e.g., a bandwidth of 2.16 GHz); the 802.11ay communication device 21 may transmit data on a large bandwidth corresponding to 60 GHz (e.g., a bandwidth of 2.16 GHz).
  • the bandwidth of the channel in which the NRU communication device 01 transmits data may also be other bandwidths less than 2.16 GHz, which is not limited in this embodiment of the present invention.
  • an embodiment of the present invention provides a data transmission device 31, which may be used in an NRU communication device, and the data transmission device 31 may include at least one processor 311 (for example, a central processing unit). At least one network interface 312, memory 313, and at least one bus 314 are used to implement connection communication between the devices.
  • the memory 313 and the network interface 312 can be connected to the processor 311 via the bus 314, respectively.
  • the processor 311 is configured to execute an executable module, such as a computer program, stored in the memory 313.
  • the memory 313 may include a high speed random access memory (RAM), and may also include a non-volatile memory such as at least one disk memory.
  • the communication connection between the data transmission device and the at least one other network element is implemented by at least one network interface 312 (which may be wired or wireless), and may use an Internet, a wide area network, a local network, a metropolitan area network, or the like.
  • the memory 313 stores a program 3131 that can be executed by the processor 311.
  • an embodiment of the present invention provides a data transmission method, which may be used in a communication device, which may be the NRU communication device 01 in FIG. 1, and the data transmission method may be as shown in FIG. 2.
  • the processor 311 in it executes the program 3131 to implement.
  • the data transmission method can include:
  • Step 101 The NRU communication device determines target data in the at least one initial data according to a priority corresponding to each initial data in the at least one initial data to be transmitted.
  • the NRU communication device may store a one-to-one correspondence between multiple data types and multiple priorities, that is, in a one-to-one correspondence stored on the NRU communication device, each data type may correspond to one priority.
  • the NRU communication device may determine the priority corresponding to the initial data according to the data type of the initial data and the one-to-one correspondence stored on the NRU communication device, and further determine at least the to-be-transmitted The priority of each initial data in an initial data, and the target data is determined according to the priority of each initial data in the at least one initial data to be transmitted.
  • the NRU communication device may determine the initial data with the highest priority in the at least one initial data as the target data; or the NRU communication device may have the lowest priority in the at least one initial data.
  • the initial data is determined as the target data; or the NRU communication device may determine the initial data of the at least one initial data that meets the preset condition as the target data according to a preset rule.
  • the NRU communication device may determine the initial data as the target data in the at least one initial data by using other methods, which is not limited in this embodiment of the present invention.
  • the priority recorded in the one-to-one correspondence stored in the NRU communication device may include: a first priority, a second priority, and a third in an enhanced distributed channel access (EDCA) mechanism.
  • EDCA enhanced distributed channel access
  • Priority and fourth priority, and priority in the Distributed Coordination Function (DCF) mechanism Priority and fourth priority, and priority in the Distributed Coordination Function (DCF) mechanism.
  • the priority corresponding to some initial data in the at least one initial data may be one of the first priority, the second priority, the third priority, and the fourth priority in the EDCA mechanism, or in the DCF mechanism priority.
  • the first priority in the EDCA mechanism may be an AC-VI (Access category video) priority in the EDCA mechanism, and the minimum contention window (CWmin) value in the first priority may be 7.
  • the value of the maximum contention window (CWmax) may be 15, and the value of the inter-frame space number (AIDSN) may be 2, and the value of the transmission opportunity limit (TXOP limit) may be 1.504ms (milliseconds);
  • the second priority in the EDCA mechanism may be the AC-VO (Access category voice) priority in the EDCA mechanism, the CWmin value in the second priority may be 15, and the CWmax value may be 31, AIDSN
  • the value can be 2, and the TXOP limit value can be 3.008 ms.
  • the third priority in the EDCA mechanism may be the AC-BE (Access categorybest effort) priority in the EDCA mechanism, the CWmin value in the third priority may be 31, the CWmax value may be 1023, and the AIDSN value may be 3, TXOP The limit value can be 0.
  • the fourth priority in the EDCA mechanism may be the AC-BK (Access category background) priority in the EDCA mechanism, the CWmin value in the fourth priority may be 31, the CWmax value may be 1023, and the AIDSN may be 7, TXOP limit The value can be 0.
  • Step 102 The NRU communication device determines an initial channel set.
  • the NRU communication device may determine all channels currently accessible by the NRU communication device, and determine an initial channel set according to all channels currently accessible by the NRU communication device.
  • the initial set of channels may include all channels currently accessible by the NRU communication device.
  • the specific steps of the NRU communication device determining the currently accessible channel may refer to the specific steps of the communication device in the related art to determine the currently accessible channel, which is not described in detail in the embodiment of the present invention.
  • each channel in the initial channel set mentioned in step 102 may be a channel with a corresponding frequency of 60 GHz and a bandwidth of 200 megabits, and the bandwidth of each channel in the initial channel set may also be 200 megabits. Other than the bandwidth of 2.16 GHz, the embodiment of the present invention does not limit this.
  • Step 103 The NRU communication device performs initial CCA detection on all channels in the initial channel set by using an EDCA mechanism.
  • the NRU communication device may perform initial CCA detection on all channels in the initial channel set by using an EDCA mechanism, that is, each corresponding frequency in the initial channel set is 60 GHz, and For a channel with a bandwidth of 200 megabytes, the initial CCA detection is performed, and the specific initial CCA detection step may refer to the CCA detection step in the EDCA mechanism, which is not described in detail in the embodiment of the present invention.
  • the NRU communication device performs initial CCA detection on the initial channel set, and determines whether the signal energy on the initial channel set exceeds the threshold of the initial CCA detection.
  • the NRU Communication equipment The device can be considered to have other devices communicating on the initial channel set. If the signal energy on the initial channel set does not exceed the threshold of the initial CCA detection, the NRU communication device can consider that no other devices are communicating on the initial channel set.
  • Step 104 The NRU communication device determines that the channel in which the initial CCA detection result in the initial channel set is idle is the target channel.
  • the initial CCA detection result of each channel can be obtained.
  • the initial CCA detection result of each initial channel may be busy or idle.
  • the NRU communication device may determine, according to the initial CCA detection result of each channel in the initial channel set, that the channel whose initial CCA detection result is idle is the target channel.
  • the NRU communication device may determine that the target channel in the initial channel set is channel 1 and channel 3.
  • Step 105 The NRU communication device performs auxiliary CCA detection on the preset channel.
  • the preset channel may be a channel used by an 802.11ad communication device or an 802.11ay communication device to transmit data in the related art, that is, the frequency corresponding to the preset channel may be 60 GHz, and the bandwidth of the preset channel may be 2.16.
  • each channel in the initial channel set may be a subchannel of the preset channel.
  • auxiliary CCA detection on the preset channel to determine whether the auxiliary CCA detection result of the preset channel is busy, that is, whether the 802.11ad communication device or 802.11ay is detected on the preset channel.
  • the communication device is transmitting data. If the auxiliary CCA detection result of the preset channel is busy, it may be determined that the 802.11ad communication device or the 802.11ay communication device is transmitting data on the preset channel. If the auxiliary CCA detection result of the preset channel is idle, it may be determined that no 802.11ad communication device and the 802.11ay communication device are transmitting data on the preset channel.
  • Step 106 If the auxiliary CCA detection result is idle, the NRU communication device performs transmission of the target data on the target channel.
  • the NRU communication device may determine that the 802.11ad communication device and the 802.11ay communication device are not transmitting data on the preset channel at this time, if the NRU communication device is in the preset The data is transmitted on the subchannel (such as the target channel) of the channel, and does not collide with the 802.11ad communication device and the 802.11ay communication device, and the target data can be transmitted smoothly. Therefore, when the auxiliary CCA detection result of the preset channel is idle, the NRU communication device can perform transmission of the target data on the target channel.
  • the NRU communication device may determine that an 802.11ad communication device or an 802.11ay communication device exists on the preset channel at this time, if the NRU communication device is at this time Data is transmitted on a subchannel (such as a target channel) of the preset channel, and the NRU communication device and 802.11ad The communication device or the 802.11ay communication device collides and cannot successfully transmit the target data.
  • a subchannel such as a target channel
  • the NRU communication device may not transmit the target data, and the NRU communication device may repeatedly perform step 105 until the auxiliary CCA detection result of the preset channel is idle, and then The target data is transmitted on the target channel.
  • the NRU communication device that needs to transmit data in the embodiment of the present invention is the NRU communication device 01 in FIG. 1 and the NRU communication device 01 needs to transmit the target data
  • the auxiliary CCA detection result of the preset channel is determined to be After idle, the NRU communication device 01 can determine that the 802.11ad communication device 11 in FIG. 1 does not transmit data at this time, and the 802.11ay communication device 21 in FIG. 1 does not transmit data at this time, and the NRU communication device can be in the target channel at this time. Transfer target data on.
  • the NRU communication device can transmit data on a channel corresponding to a higher frequency (such as 60 GHz), greatly improving the efficiency of data transmission, and capable of communicating with existing 802.11ad communication devices and 802.11ay.
  • the device is compatible.
  • the communication channel is performed on the preset channel.
  • the CCA detection is assisted, and the target data is transmitted on the target channel when the auxiliary CCA detection result is idle. That is, after determining the target channel for transmitting data, the NRU communication device needs to detect whether the 802.11 communication device transmits data on a large bandwidth channel corresponding to the same frequency, and only if the 802.11 communication device does not transmit data on the large bandwidth channel of the same frequency.
  • the NRU communication device collides with the 802.11 communication device when the target data is transmitted, and the NRU communication device and the 802.11 communication device are mutually compatible.
  • the embodiment of the present invention provides another data transmission method, which may be used in a communication device, which may be the NRU communication device 01 in FIG. 1, and the data transmission method may be illustrated.
  • the processor 311 in 2 executes the program 3131 to implement.
  • the data transmission method can include:
  • Step 201 The NRU communication device determines target data in the at least one initial data according to a priority corresponding to each initial data in the at least one initial data to be transmitted.
  • the NRU communication device may store a one-to-one correspondence between multiple data types and multiple priorities, that is, in a one-to-one correspondence stored on the NRU communication device, each data type may correspond to one priority.
  • the NRU communication device may determine the priority corresponding to the initial data according to the data type of the initial data and the one-to-one correspondence stored on the NRU communication device, and further determine at least the to-be-transmitted The priority of each initial data in an initial data, and the target data is determined according to the priority of each initial data in the at least one initial data to be transmitted.
  • the priority recorded in the one-to-one correspondence stored in the NRU communication device may include: a first priority, a second priority, a third priority, and a first in a listen to talk (LBT) mechanism.
  • Fourth priority The priority corresponding to some initial data in the at least one initial data may be one of the first priority, the second priority, the third priority, and the fourth priority in the LBT mechanism.
  • the number of fixed backoff slots (m p ) may be 1, the CWmin value may be 3, the CWmax value may be 7, the TXOP limit value may be 2 ms, and the CWp may be selected.
  • the allowed CW p sizes can be ⁇ 3,7 ⁇ ; in the second priority of the LBT mechanism, the m p value can be 1, the CWmin value can be 7, the CWmax value can be 15, and the TXOPlimit value can be 3 ms.
  • the allowed CW p sizes can be ⁇ 7, 15 ⁇ ; in the third priority of the LBT mechanism, the m p value can be 3, the CWmin value can be 15, the CWmax value can be 63, and the TXOP limit value can be 8ms or 15ms.
  • the allowed CW p sizes can be ⁇ 15, 31, 63 ⁇ ; in the fourth priority of the LBT mechanism, the m p value can be 7, the CWmin value can be 15, the CWmax value can be 1023, and the TXOP1 imit value can be 8ms or 15ms, allowed CW p sizes can be ⁇ 15, 31, 63, 127, 255, 511, 1023 ⁇ .
  • Step 202 The NRU communication device determines an initial channel set.
  • the specific step of determining the initial channel set by the NRU communication device in step 202 may refer to the specific step of determining the initial channel set by the NRU communication device in step 102 in the previous embodiment, which is not described herein.
  • Step 203 The NRU communication device determines a threshold of initial CCA detection.
  • the NRU communication device may determine the number of channels in the initial channel set and detect whether a different system device exists within the preset range.
  • the different system device may be an 802.11ad communication device or an 802.11ay communication device in a licensed-assisted access (LAA) system. That is, the NRU communication device can detect whether there is a different system device (such as an 802.11ad communication device or an 802.11ay communication device) having the same frequency corresponding to the channel through which the NRU communication device transmits data within a preset range. It should be noted that the distance between the device in the preset range and the NRU communication device is less than a preset distance.
  • the NRU communication device may determine the first threshold according to the number of channels in the initial channel set and the first threshold determination formula, and use the first threshold as the initial CCA detection. Threshold.
  • the NRU communication device may determine the second threshold according to the number of channels in the initial channel set and the second threshold determination formula, and the second threshold is determined.
  • the second threshold is used as the threshold for initial CCA detection.
  • the second threshold determination formula may be:
  • X Thresh_max is the second threshold
  • T max ⁇ 75+10*log 10 BW
  • BW is the bandwidth corresponding to the initial channel set
  • dB decibel
  • X r is the maximum allowable transmission threshold (that is, the maximum allowable emission threshold specified by relevant laws)
  • M is the participating CCA. The number of channels detected.
  • the threshold of the CCA detection can be determined by the following formula:
  • X T is the threshold of the CCA detection determined in the related art
  • X r is the maximum allowable transmission threshold
  • T max (dBm) ⁇ 75dBm/MHz+10log 10 (BW)
  • dBm is millidB
  • MHz is megahertz.
  • Log 10 (BW) is the logarithm of BW at base 10.
  • the threshold of the CCA detection determined in the related art is not related to the number of channels participating in the CCA detection, and the threshold of the CCA detection cannot be applied to different scenarios.
  • the threshold of the initial CCA detection determined in step 203 is related to the number of channels participating in the CCA detection, that is, the threshold of the initial CCA detection determined in the embodiment of the present invention can be better adapted to different scenarios.
  • Step 204 The NRU communication device performs initial CCA detection on all channels in the initial channel set.
  • the NRU communication device in step 204 may perform initial CCA detection on all channels in the initial channel set by using the first threshold; if the initial determination in step 203 is performed
  • the threshold of the CCA detection is the second threshold.
  • the NRU communication device may perform initial CCA detection on all channels in the initial channel set by using the second threshold.
  • the initial CCA detection may include only the first CCA detection, or the initial CCA detection may include the first CCA detection and the second CCA detection.
  • the NRU communication device may first perform first on all channels in the initial channel set.
  • the CCA detects that if the first CCA detection result of the initial channel set is busy at a certain time in the first CCA detection process, stopping the first CCA detection on the initial channel set, and repeatedly performing the first channel set on the initial channel set.
  • the second CCA detects until the second CCA detection result of the initial channel set is idle, and then continues the first CCA detection until the first CCA detection ends.
  • the thresholds used in the first CCA detection and the second CCA detection may both be the thresholds determined in step 203.
  • the NRU communication device may perform one cycle of first CCA detection on the initial channel set, and the time period of the first CCA detection may include a fixed period (Td) of 16 us (microseconds) and n slots of 9 us (slot) ), n is an integer greater than or equal to zero. That is, the NRU communication device may perform TBT+n*slot (one cycle) LBT backoff on the initial channel set, perform first CCA detection on the initial channel set in Td+n*slot, and start at When the initial channel set performs the first CCA detection, the backoff counter is used to start counting. When the number currently recorded by the backoff counter is 0, the NRU communication device may determine that a time period of the first CCA detection ends at this time.
  • Td 16 us
  • the initial channel set performs a second CCA detection
  • the time period of the second CCA detection may also include a fixed period (Td) of 16 us (microseconds) and n slots of 9 us, where n is greater than or equal to zero.
  • Td 16 us
  • n slots 9 us
  • the NRU communication device may initiate the first CCA detection on the initial channel set, that is, the backoff counter may be controlled to continue counting, and continue to the initial channel.
  • the set performs the first CCA test.
  • the initial channel set may include a channel CC1, a channel CC2, a channel CC3, and a channel CC4, in a process of performing first CCA detection on all channels in the initial channel set, if at a certain time If the first CCA detection result is busy, the NRU communication device needs to stop performing the first CCA detection on the initial channel set, and starts to perform the second CCA detection on the initial channel set.
  • the NRU communication device may repeatedly perform second CCA detection on all channels in the initial channel set, that is, the NRU communication device may set the initial channel set (including the channel CC1).
  • the channel C2, the channel CC3, and the channel CC4) perform the first second CCA detection. If the result of the first second CCA detection is busy, the NRU communication device needs to set the initial channel (including the channel CC1 and the channel). CC2, channel CC3, and channel CC4) performing the second second CCA detection. If the result of the second second CCA detection is busy, the NRU communication device needs to perform the third second CCA detection on the initial channel set. , so looping until the second CCA detection result of all channels in the initial channel set is idle, and then continuing the first CCA detection.
  • the initial channel set may include at least two channels, and when the NRU communication device repeatedly performs the second CCA detection on the initial channel set, the NRU communication device may obtain a first subset of the initial channel set by using a binary method, and A subset performs the second CCA detection, and if the second CCA detection result of the first subset is idle, the continuation of the initial The first channel set performs the first CCA detection; if the second subset of the first subset is busy, the second subset of the first subset is obtained by the dichotomy, and the second subset is subjected to the second CCA detection If the second CCA detection result of the second subset is idle, continue the first CCA detection; if the second subset of the second CCA detection result is busy, it is necessary to determine whether the second subset is set by the initial channel One channel component; if the second subset consists of one channel of the initial channel set, the second CCA detection is repeatedly performed on the second subset until the second CCA detection result of the second subset is idle
  • the dichotomy is adopted in the P channels. Selecting P/2 channels and performing second CCA detection on the P/2 channels, it should be noted that the number of channels participating in the second CCA detection is P/2, and the second CCA detection at this time The threshold changes as the number of channels participating in the CCA detection changes.
  • the second CCA detection result of the P/2 channels is idle, proceeding to perform the first CCA detection on the initial channel set; if the second CCA detection result of the P/2 channels is still busy, then in the P
  • the P/4 channels are selected by using the binary method in /2 channels, and the above steps are repeated until only the selected subset of the dichotomy method includes only one channel (the one channel can be a channel with a bandwidth of 20 MHz), and then repeatedly The one channel performs the second CCA detection until the result of the second CCA detection of the one channel is idle, and the first CCA detection is continued.
  • the initial channel set may include a channel CC1, a channel CC2, a channel CC3, and a channel CC4, and each channel is a channel having a bandwidth of 20 MHz, or a channel having a bandwidth of 200 MHz, or other channels having a bandwidth of less than 2.16 GHz. .
  • the NCC communication device When the NCC communication device performs the first CCA detection on all the channels in the initial channel set, if the first CCA detection result is busy at a certain time, the two channels are selected by using the binary method in the four channels ( For example, channel CC1 and channel CC2), and perform second CCA detection on the selected two channels, that is, perform the first second CCA detection on the initial channel set; if the second CCA detection result of the two channels is still To be busy, a channel is selected in the two channels (such as channel CC1). Since only one channel is selected by using the binary method, the NRU communication device needs to repeatedly perform second CCA detection on the channel CC1. The first CCA detection is continued until the result of the second CCA detection of the channel CC1 is idle.
  • the binary method for example, channel CC1 and channel CC2
  • the first second CCA detection result of the channel CC1 (that is, the second second CCA detection result of the initial channel set) is busy, and the second second CCA detection result of the channel CC1 (that is, the initial channel set) If the third second CCA detection result is idle, the first CCA detection is continued on the initial channel set.
  • Step 205 The NRU communication device determines that the channel in which the initial CCA detection result in the initial channel set is idle is the target channel.
  • the NRU communication device may perform the preset time period before the end of the first CCA detection.
  • the channel in which the first CCA detection result in the initial channel set is idle is determined as the target channel.
  • the preset time period before the end of the first CCA detection may be 9 us or 25 us.
  • the preset time period may also be other time segments, which is not limited in this embodiment of the present invention.
  • Step 206 The NRU communication device performs auxiliary CCA detection on the preset channel.
  • the specific step of the NRU communication device performing the auxiliary CCA detection on the preset channel in the step 206 may refer to the specific step of the NRU communication device performing the auxiliary CCA detection on the preset channel in the step 105 in the previous embodiment. I will not repeat them here.
  • Step 207 If the auxiliary CCA detection result is idle, the NRU communication device performs transmission of the target data on the target channel.
  • the specific step of the NRU communication device performing the transmission of the target data on the target channel in step 207 may refer to the specific step of the NRU communication device performing the target data transmission on the target channel in step 106 in the previous embodiment. The embodiment will not be described here.
  • the NRU communication device needs to repeatedly perform the execution step 206 until the secondary CCA detection result is idle.
  • the transmitting end may first randomly Determining the number of time slots per channel, and performing CCA detection on the channel within a time period (including a fixed time period Td and n time slot slots of each channel, n is the number of time slots of the channel), Determine if the status of the channel is idle or busy. It should be noted that the number of slots of each channel randomly determined by the transmitting end may be different. Therefore, after detecting the CCA of a certain channel, it is necessary to wait for CCA detection of other channels until the CCA detection is completed for all channels. .
  • the CCA detection result at all times is an idle channel (such as channel CC1, channel CC3, and channel CC4 in FIG. 7) as the first channel, and at least in the CCA detection process.
  • the CCA detection result at one time is a busy channel (such as channel CC2 in FIG. 7) as the second channel.
  • the CCA detection result is the idle first channel in the additional one time slot (such as channel CC1 and channel CC4 in FIG. 7).
  • the data is transmitted over, and transmission of data on the second channel (such as channel CC2 in FIG. 7) and the first channel in which the CCA detection result is busy (such as channel CC3 in FIG. 7) is prohibited.
  • the additional one time slot may be one time slot after all CCAs are detected.
  • the transmitting end prohibits transmission of data on the first channel in which the CCA detection result is busy in the second channel and the additional one time slot, and when transmitting data on the first channel, it is possible to prohibit the channel for transmitting data. Being in an idle state makes the bandwidth of the channel for transmitting data small, and therefore, the efficiency of data transmission is low.
  • the NRU communication device stops performing the first initial channel set.
  • the CCA detects and starts to perform the second CCA detection on the initial channel set until the second CCA detection result is idle, and then performs the first CCA detection on the initial channel set, so that the second channel in the related art can be And the CCA detection result in the additional one time slot is effectively utilized for the busy first channel, thereby increasing the bandwidth of the channel for transmitting data, improving the efficiency of data transmission, and being more suitable for the enhanced data in the NRU.
  • Streaming (eMBB offloading) scenario eMBB offloading
  • the transmitting end may first randomly Determining the number of slots of a channel (such as channel CC1) of the plurality of channels, and in a time period (including a fixed time period Td and n time slot slots of the one channel, where n is the channel) The number of slots, n is 9 in FIG. 8 ), CCA detection is performed on one channel (channel CC1) to determine whether the state of the channel is idle or busy.
  • the CCA detection result of the one channel is idle during the CCA detection process, it is necessary to look back all the channels in the last slot of the n slots, and judge that in the last slot, each channel Whether the CCA test result is idle or busy, if the third channel (such as channel CC1, channel CC2, and channel CC3) in all channels is in the last slot of the CCA The detection result is idle, and the fourth channel (such as channel CC4) in all channels in the last slot has a CCA detection result that is busy, and then can be transmitted on the third channel (such as channel CC1, channel CC2, and channel CC3). Data, and transmission of data on the fourth channel (such as channel CC4) is prohibited.
  • the channel for which data transmission is prohibited may be in an idle state, so that the bandwidth of the channel for transmitting data is small, The efficiency of data transmission is low.
  • the NRU communication device stops performing the first initial channel set.
  • the CCA detects and starts to perform the second CCA detection on the initial channel set until the second CCA detection result is idle, and then performs the first CCA detection on the initial channel set, so that the fourth channel in the related art can be Effective use, thereby increasing the bandwidth of the channel for transmitting data, improving the efficiency of data transmission, and more suitable for the eMBB offloading scenario in the NRU.
  • the NRU communication device can transmit data on a channel with a larger bandwidth corresponding to a higher frequency (such as 60 GHz), which greatly improves the efficiency of data transmission, is applicable to the scene of eMBB offloading, and can be combined with Existing 802.11ad communication devices and 802.11ay communication devices are compatible.
  • a higher frequency such as 60 GHz
  • the communication channel is performed on the preset channel.
  • the CCA detection is assisted, and the target data is transmitted on the target channel when the auxiliary CCA detection result is idle. That is, after determining the target channel for transmitting data, the NRU communication device needs to detect whether the 802.11 communication device transmits data on a large bandwidth channel corresponding to the same frequency, and only if the 802.11 communication device does not transmit data on the large bandwidth channel of the same frequency.
  • the NRU communication device collides with the 802.11 communication device when the target data is transmitted, and the NRU communication device and the 802.11 communication device are mutually compatible.
  • FIG. 9 is a schematic diagram of another data transmission scenario according to an embodiment of the present invention.
  • the NRU communication device 01 can transmit data on a channel corresponding to a small bandwidth (eg, 200 MHz bandwidth) of 60 GHz; the 802.11ad communication device 11
  • the data can be transmitted over a large bandwidth corresponding to 60 GHz (e.g., a bandwidth of 2.16 GHz); the 802.11ay communication device 21 can transmit data over a large bandwidth corresponding to 60 GHz (e.g., a bandwidth of 2.16 GHz).
  • the next-generation WiFi communication device 31 can transmit data on a large bandwidth corresponding to 60 GHz, and can also transmit data on a small bandwidth corresponding to 60 GHz.
  • the English of WiFi may be Wireless Fidelity
  • the WiFi may be a wireless local area network based on the IEEE 802.11b standard
  • the next generation WiFi communication device may also be referred to as a next generation 60 GHz (Future Generation 60 GHz, FG60) communication device.
  • the bandwidth of the channel in which the NRU communication device 01 transmits data may also be other bandwidths less than 2.16 GHz, which is not limited in this embodiment of the present invention.
  • the embodiment of the present invention provides another data transmission method, which may be used in a communication device, which may be the NRU communication device 01 in FIG. 9, and the data transmission method may be illustrated.
  • the processor 311 in 2 executes the program 3131 to implement.
  • the data transmission method can include:
  • Step 301 The NRU communication device determines target data in the at least one initial data according to a priority corresponding to each initial data in the at least one initial data to be transmitted.
  • the specific step of determining the target data by the NRU communication device in step 301 may refer to the specific step of determining the target data by the NRU communication device in step 101 or step 201, which is not described herein.
  • Step 302 The NRU communication device detects whether the preamble sent by the FG60 communication device after competing for the preset channel is received.
  • the frequency corresponding to the preset channel is 60 GHz
  • the bandwidth of the preset channel is 2.16 GHz.
  • the FG60 communication device, the 802.11ad communication device, and the 802.11ay communication device can all transmit data on the preset channel.
  • the FG60 communication device needs to transmit data
  • the FG60 communication device needs to first compete with the 802.11ad communication device and the 802.11ay communication device for the preset channel.
  • the FG60 communication device can broadcast a pre-preamble, which can include a network allocation loss (NAV) indicating the remaining time of the data transmission, the NRU communication
  • NAV network allocation loss
  • the NRU communication device may repeatedly detect whether the preamble sent by the FG60 communication device is received, that is, step 302 is repeatedly performed until receiving. Until the preamble.
  • the FG60 communication device can contend for the channel on the preset channel with the corresponding frequency of 60 GHz and the bandwidth of 2.16 GHz, or the FG60 communication device can be corresponding. a frequency compensating channel on a preset channel having a frequency of 2.00 GHz and having a bandwidth of 2.16 GHz, and transmitting data on the preset channel after competing for the preset channel; after the FG60 communication device transmits the preamble, the FG60 communication device needs The NRU communication device competes for a channel on a small bandwidth corresponding to a frequency of 60 GHz, and transmits data on the small bandwidth channel after competing for the channel.
  • the FG60 communication device transmits data with a small bandwidth channel and the NRU.
  • the bandwidth of the channel through which the communication device transmits data is the same. That is, after the FG60 communication device transmits the preamble, the FG60 communication device needs to compete with the NRU communication device on the same bandwidth channel and transmit data after competing for the channel.
  • step 302 is performed; if the preamble sent by the FG60 communication device is received, step 303 is performed.
  • Step 303 If the NRU communication device receives the preamble sent by the FG60 communication device, the NRU communication device determines the initial channel set.
  • the specific step of determining the initial channel set by the NRU communication device in step 303 may refer to the specific step of determining the initial channel set by the NRU communication device in step 102, which is not described herein.
  • Step 304 The NRU communication device performs initial CCA detection on all channels in the initial channel set.
  • Step 305 The NRU communication device determines that the channel in which the initial CCA detection result in the initial channel set is idle is the target channel.
  • the specific step of the NRU communication device performing the initial CCA detection in step 304 may refer to the specific step of the initial CCA detection performed by the NRU communication device in step 103, where the NRU communication device determines the target channel.
  • the specific steps refer to the specific steps of determining the target channel in step 104, which are not described herein again.
  • step 301 refers to step 201
  • the NRU communication device may further determine the threshold of the initial CCA detection before step 304, and the specific step of determining the threshold of the initial CCA detection may refer to determining the threshold of the initial CCA detection in step 203.
  • the specific step of the initial CCA detection by the NRU communication device in step 304 may be referred to the specific step of the initial CCA detection by the NRU communication device in step 204.
  • the specific step of determining the target channel by the NRU communication device in step 305 may refer to determining the target channel in step 205.
  • the specific steps of the present invention are not described herein.
  • Step 306 The NRU communication device performs transmission of the target data on the target channel.
  • the NRU communication device can transmit data on the target channel, and does not communicate with other communication devices (such as the FG60 communication device, The 802.11ad communication device or the 802.11ay communication device collides, and the target data can be transmitted smoothly.
  • the preamble transmitted by the FG60 communication device may include a NAV for indicating the remaining time of the data transmission, and the NRU communication device may perform the transmission of the target data on the target channel according to the remaining time of the data transmission indicated by the NAV.
  • the NRU communication device When the NRU communication device needs to transmit the target data, the NRU communication device needs to detect whether the preamble sent by the FG60 communication device after competing to the preset channel is received. If the preamble is received, the initial channel set may be determined, and The initial channel set performs initial CCA detection, and then the target channel is determined according to the initial CCA detection result, and then the target data is transmitted on the target channel.
  • the NRU communication device when receiving the preamble sent by the FG60 communication device, can determine all channels currently accessible, and determine that the initial CCA detection result is After the idle target channel, the target data is transmitted on the target channel. That is, the NRU communication device transmits data on the target channel after determining that the 802.11 communication device is not transmitting data, and after determining that the FG60 communication device is not transmitting data on the target channel, effectively avoiding NRU communication when transmitting the target data.
  • the device collides with the 802.11 communication device and the FG60 communication device, and the NRU communication device is compatible with the 802.11 communication device and the FG60 communication device.
  • the embodiment of the present invention provides another data transmission device 40, which may be used for a communication device, which may be the NRU communication device 01 in FIG. 1, the data transmission device 40.
  • a communication device which may be the NRU communication device 01 in FIG. 1, the data transmission device 40.
  • Can include:
  • a first determining module 401 configured to determine an initial channel set, where the initial channel set includes all channels currently accessible by the communications device;
  • the first detecting module 402 is configured to perform initial CCA detection on all channels in the initial channel set.
  • a second determining module 403, configured to determine that the channel in which the initial CCA detection result in the initial channel set is idle is the target channel
  • the second detecting module 404 is configured to perform auxiliary CCA detection on the preset channel, where each channel in the initial channel set is a subchannel of the preset channel;
  • the transmission module 405 is configured to perform transmission of the target data on the target channel when the auxiliary CCA detection result is idle.
  • the second detection module performs auxiliary CCA detection on the preset channel, and the transmission module transmits the target data on the target channel when the auxiliary CCA detection result is idle. That is, after determining the target channel for transmitting data, the NRU communication device needs to detect whether the 802.11 communication device transmits data on a large bandwidth channel corresponding to the same frequency, and only if the 802.11 communication device does not transmit data on the large bandwidth channel of the same frequency. When the data is transmitted on the target channel, effective avoidance When the target data is transmitted, the NRU communication device collides with the 802.11 communication device, and the NRU communication device and the 802.11 communication device are mutually compatible.
  • the embodiment of the present invention provides another data transmission device 40.
  • the data transmission device 40 may further include:
  • the third determining module 406 is configured to determine target data in the at least one initial data according to a priority corresponding to each initial data in the at least one initial data to be transmitted, where the priority of the initial data is: a first priority in the EDCA mechanism One of the first, second, third, and fourth priorities, or the priority of the DCF mechanism.
  • the first detecting module 402 is further configured to:
  • the embodiment of the present invention provides a data transmission device 40.
  • the data transmission device 40 may further include:
  • the fourth determining module 407 is configured to determine target data in the at least one initial data according to a priority corresponding to each initial data in the at least one initial data to be transmitted, where the priority of the initial data is: a first priority in the LBT mechanism One of the priority, the second priority, the third priority, and the fourth priority.
  • the first detecting module 402 is further configured to:
  • the second determining module 403 can also be used to:
  • the channel in which the first CCA detection result in the initial channel set is idle is determined as the target channel in the preset time period before the end of the first CCA detection;
  • the first detecting module 402 is further configured to:
  • the second CCA detection is performed repeatedly on all channels in the initial channel set until the second CCA detection result of all the channels in the initial channel set is idle, and then the first CCA detection is continued.
  • the initial channel set includes at least two channels
  • the first detecting module 402 is further configured to:
  • the second subset of the first subset is obtained by using the dichotomy
  • the second CCA detection is repeatedly performed on the second subset until the second CCA detection result of the second subset is idle, and then the first CCA detection is continued.
  • the data transmission device 40 may further include:
  • a fifth determining module 408, configured to determine a number of channels in the initial channel set
  • the third detecting module 410 is configured to detect whether a different system device exists in the preset range, and the distance between the device in the preset range and the communication device is less than a preset distance;
  • the seventh determining module 411 is configured to determine a second threshold according to the number of channels in the initial channel set and the second threshold determining formula when the inter-system device exists in the preset range, where the second threshold determining formula is:
  • the first detection module 402 can also be used to:
  • the sixth determining module 409 can also be used to:
  • the first threshold is determined according to the number of channels in the initial channel set and the first threshold determination formula
  • Thresh_max is the second threshold
  • T max ⁇ 75+10*log 10 BW
  • log 10 BW is the logarithm of BW at base 10
  • BW is The bandwidth corresponding to the initial channel set
  • dB decibel
  • I is the interference value of the different system equipment
  • ⁇ I is the sum of the interference values of all the different system devices in the preset range
  • X r is the maximum allowable transmission threshold.
  • the first detection module 402 can also be used to:
  • the first CCA detection is performed on all channels in the initial channel set by using the first threshold.
  • the time period of the first CCA detection includes a fixed period of 16 us and n slots of 9 us, where n is an integer greater than or equal to zero.
  • the preset time period is 9us or 25us.
  • the frequency corresponding to the preset channel is 60 GHz, and the bandwidth of the preset channel is 2.16 GHz.
  • the second detection module performs auxiliary CCA detection on the preset channel, and the transmission module transmits the target data on the target channel when the auxiliary CCA detection result is idle. That is, after determining the target channel for transmitting data, the NRU communication device needs to detect whether the 802.11 communication device transmits data on a large bandwidth channel corresponding to the same frequency, and only if the 802.11 communication device does not transmit data on the large bandwidth channel of the same frequency. When the data is transmitted on the target channel, the NRU communication device collides with the 802.11 communication device when the target data is transmitted, and the NRU communication device and the 802.11 communication device are mutually compatible.
  • another embodiment of the present invention provides another data transmission device 50, which may be used for a communication device, which may be the communication device 01 of FIG. 9, and the data transmission device 50 may include :
  • the first detecting module 501 is configured to detect whether the preamble sent by the next-generation FG60 communication device after competing to the preset channel is received, the frequency corresponding to the preset channel is 60 GHz, and the bandwidth of the preset channel is 2.16 GHz;
  • the first determining module 502 is configured to determine, when the preamble is received, an initial channel set, where the initial channel set includes all channels currently accessible by the communications device, and each channel in the initial channel set is a subchannel of the preset channel. ;
  • a second detecting module 503, configured to perform initial idle channel assessment CCA detection on all channels in the initial channel set
  • the second determining module 504 is configured to determine that the channel in which the initial CCA detection result in the initial channel set is idle is the target channel;
  • the transmission module 505 is configured to perform transmission of the target data on the target channel.
  • the transmitting module transmits the target data on the target channel. That is, the NRU communication device transmits data on the target channel after determining that the 802.11 communication device is not transmitting data, and after determining that the FG60 communication device is not transmitting data on the target channel, effectively avoiding NRU communication when transmitting the target data.
  • the device collides with the 802.11 communication device and the FG60 communication device, and the NRU communication device is compatible with the 802.11 communication device and the FG60 communication device.
  • the foregoing first detecting module 501 may be configured to perform the method in step 302 in the embodiment shown in FIG. 10; the first determining module 502 may be configured to perform step 303 in the embodiment shown in FIG.
  • the second detection module 503 can be used to perform the method in step 304 in the embodiment shown in FIG. 10; the second determination module 504 can be used to execute the method in step 305 in the embodiment shown in FIG.
  • the transmission module 505 can be used to perform the method in step 306 in the embodiment shown in FIG.
  • the data transmission device 50 may further include: a third determining module 506 having a third determining module. 406 the same or similar function.
  • the third determining module 506 can be configured to perform the method in step 101 in step 301 in the embodiment shown in FIG.
  • the data transmission device 50 may further include: a fourth determining module 507 having a fourth determining module. 407 the same or similar function.
  • the fourth determining module 507 can be used to perform the method in step 201 of step 301 in the embodiment shown in FIG.
  • the data transmission device 50 may further include: a fifth determining module 508, a sixth determining module 509, and a The third detection module 510 and the seventh determination module 511.
  • the fifth determining module 508 has the same or similar function as the fifth determining module 408; the sixth determining module 509 has the same or similar function as the sixth determining module 409; the third determining module 510 has the same as the third detecting module 410 or A similar function; the seventh determination module 511 has the same or similar function as the seventh determination module 411.
  • the fifth determining module 508, the sixth determining module 509, the third detecting module 510, and the seventh determining module 511 are jointly used to perform the method for determining the threshold of the initial CCA detection before the step 304, in the embodiment shown in FIG. And the method of determining the threshold of the initial CCA detection may be performed by referring to the method in step 203 in the embodiment shown in FIG.
  • the preamble may include a NAV for indicating a remaining time of the data transmission
  • the transmission module 506 may be further configured to: perform transmission of the target data on the target channel according to a remaining time of the data transmission indicated by the NAV.
  • the transmission module transmits the target data on the target channel. That is, the NRU communication device transmits data on the target channel after determining that the 802.11 communication device is not transmitting data, and after determining that the FG60 communication device is not transmitting data on the target channel, effectively avoiding NRU communication when transmitting the target data.
  • the device collides with the 802.11 communication device and the FG60 communication device, and the NRU communication device is compatible with the 802.11 communication device and the FG60 communication device.
  • the embodiment of the present invention provides a data transmission system, which may include a communication device, and the communication device may include FIG. 2, FIG. 11, FIG. 12, FIG. 13, FIG. 14, FIG. 15, FIG. 16, FIG.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product comprising one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a readable storage medium of a computer or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data
  • the center transmits to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line) or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium, or a semiconductor medium (eg, a solid state hard disk) or the like.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

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Abstract

本申请公开了一种数据传输方法、装置及系统，属于通信领域，该方法包括：通信设备确定初始信道集合，初始信道集合包括通信设备当前可接入的所有信道；然后，通信设备对初始信道集合中的所有信道进行初始空闲信道评估CCA检测，并确定初始信道集合中的初始CCA检测结果为空闲的信道为目标信道；对预设信道进行辅助CCA检测，示例的，该初始信道集合中的每个信道均为预设信道的子信道；若辅助CCA检测结果为空闲，则通信设备在目标信道上进行目标数据的传输。本申请解决了NRU通信设备与802.11通信设备无法互相兼容的问题，实现了NRU通信设备与802.11通信设备的互相兼容，本申请用于数据传输。

Description

数据传输方法、装置及系统
本申请要求于2016年8月23日提交中国专利局、申请号为201610711810.7、发明名称为“数据传输方法、装置及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，特别涉及一种数据传输方法、装置及系统。
背景技术
在通信标准802.11(包括通信标准802.11ad和通信标准802.11ay)中，设备能够在对应的频率为60千兆赫兹(GHz)的信道上传输数据。
示例的，当802.11通信设备需要传输数据时，802.11通信设备首先需要确定当前可接入的多个信道，然后可以在当前可接入的多个信道中确定当前可传输数据的目标信道，并在目标信道上传输数据。具体的，发送端在当前可传输数据的目标信道时，首先可以随机的确定当前可接入的多个信道中每个信道的时隙数，并根据每个信道的时隙数，采用一种空闲信道评估(clear channel assessment，CCA)检测机制对每个信道进行CCA检测，以确定每个信道的状态为空闲还是忙碌，并将CCA检测结果为空闲的信道确定为目标信道。
在第三代合作伙伴计划(3rd Generation Partnership Project，3GPP)的下一代无线通信标准(new radio-unlicensed，NR)中，记载了NRU(NR中的一种高频通信设备)通信设备会在对应更高频率的小带宽信道上传输数据，如60GHz。由于802.11通信设备也在对应的频率为60GHz的信道上传输数据，且802.11通信设备用于传输数据的信道的带宽远远大于NRU通信设备用于传输数据的信道的带宽，使得802.11通信设备在传输数据时采用的CCA检测机制无法适用于NRU通信设备，802.11通信设备和NRU通信设备在传输数据时较容易发生碰撞，因此，NRU通信设备与802.11通信设备无法互相兼容。
发明内容
为了解决NRU通信设备与802.11通信设备无法互相兼容的问题，本申请提供了一种数据传输方法、装置及系统。所述技术方案如下：
第一方面，提供了一种数据传输方法，用于通信设备，所述方法包括：
确定初始信道集合，所述初始信道集合包括所述通信设备当前可接入的所有信道；
对所述初始信道集合中的所有信道进行初始空闲信道评估CCA检测；
确定所述初始信道集合中的初始CCA检测结果为空闲的信道为目标信道；
对预设信道进行辅助CCA检测，所述初始信道集合中的每个信道均为所述预设信道的子信道；
若所述辅助CCA检测结果为空闲，则在所述目标信道上进行目标数据的传输。
由于通信设备在确定当前可接入的所有信道，并确定了初始CCA检测结果为空闲的目标信道后，又对预设信道进行了辅助CCA检测，且在辅助CCA检测结果为空闲时，才在目标信道上传输目标数据。也即，NRU通信设备在确定传输数据的目标信道后，需要检测 802.11通信设备是否在对应相同频率的大带宽信道上传输数据，只有在802.11通信设备未在该相同频率的大带宽信道上传输数据时，才在该目标信道上传输数据，有效的避免了在传输目标数据时，NRU通信设备与802.11通信设备发生碰撞，实现了NRU通信设备与802.11通信设备的互相兼容。
可选的，所述预设信道对应的频率为60GHz，所述预设信道的带宽为2.16GHz。
第二方面，提供了一种数据传输方法，用于通信设备，所述方法包括：
检测是否接收到下一代FG60通信设备在竞争到预设信道后发送的前导码，所述预设信道对应的频率为60GHz，所述预设信道的带宽为2.16GHz；
若接收到所述前导码，则确定初始信道集合，所述初始信道集合包括所述通信设备当前可接入的所有信道，所述初始信道集合内的每个信道均为所述预设信道的子信道；
对所述初始信道集合中的所有信道进行初始空闲信道评估CCA检测；
确定所述初始信道集合中的初始CCA检测结果为空闲的信道为目标信道；
在所述目标信道上进行目标数据的传输。
由于NRU通信设备在接收到FG60通信设备发送的前导码，则确定当前可接入的所有信道，并确定了初始CCA检测结果为空闲的目标信道后，在目标信道上传输目标数据。也即，NRU通信设备在确定802.11通信设备不在传输数据，且在确定FG60通信设备不在目标信道上传输数据后，才在该目标信道上传输数据，有效的避免了在传输目标数据时，NRU通信设备与802.11通信设备以及FG60通信设备发生碰撞，实现了NRU通信设备同时与802.11通信设备和FG60通信设备的互相兼容。
需要说明的是，在该FG60通信设备发送前导码前，该FG60通信设备可以在对应的频率为60GHz，且带宽为2.16GHz的预设信道上竞争信道，或者，在竞争到该预设信道后，在该预设信道上传输数据；在该FG60通信设备发送前导码后，该FG60通信设备需要在对应的频率为60GHz的小带宽上竞争信道，并在竞争到信道后在该小带宽的信道上传输数据，示例的，该FG60通信设备传输数据的小带宽的信道可以与NRU通信设备传输数据的信道的带宽相同。也即，在FG60通信设备发送前导码后，FG60通信设备需要与NRU通信设备在相同带宽的信道上竞争，并在竞争到信道后传输数据。
可选的，所述前导码包括用于指示数据传输的剩余时间的网络分配失量NAV，所述在所述目标信道上进行目标数据的传输，包括：
根据所述NAV所指示的数据传输的剩余时间，在所述目标信道上进行所述目标数据的传输。
在第一方面和第二方面提供的数据传输方法的一些实施方式中：
所述对所述初始信道集合中的所有信道进行初始空闲信道评估CCA检测，包括：
采用增强分布式信道访问EDCA机制对所述初始信道集合中的所有信道进行初始CCA检测；
在所述确定初始信道集合之前，所述方法还包括：
根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定所述至少一个初始数据中的目标数据，初始数据的优先级为：所述EDCA机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级，或者分布式协调功能DCF机制中优先级。
可选的，所述对所述初始信道集合中的所有信道进行初始空闲信道评估CCA检测，包 括：
对所述初始信道集合中的所有信道进行第一CCA检测，若在所述第一CCA检测过程中的某一时刻所述第一CCA检测结果为忙碌，则停止所述第一CCA检测，并反复对所述初始信道集合进行第二CCA检测，直至所述第二CCA检测结果为空闲，再继续所述第一CCA检测，直至所述第一CCA检测结束；
在本申请中，NRU通信设备在对该初始信道集合进行第一CCA检测的过程中，若某一时刻的第一CCA检测结果为忙碌，则该NRU通信设备停止对初始信道集合进行第一CCA检测，并开始反复对该初始信道集合进行第二CCA检测，直至该第二CCA检测结果为空闲，才继续对该初始信道集合进行第一CCA检测，这样能够对对信道进行有效的利用，从而增大了用于传输数据的信道的带宽，提高了数据传输的效率，更适用于NRU中的增强数据分流(eMBB offloading)场景。
所述确定所述初始信道集合中的初始CCA检测结果为空闲的信道为目标信道，包括：
将所述第一CCA检测结束前的预设时间段内，所述初始信道集合中的第一CCA检测结果为空闲的信道确定为目标信道；
在所述确定初始信道集合之前，所述方法还包括：
根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定所述至少一个初始数据中的目标数据，初始数据的优先级为：先听后讲LBT机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级。
可选的，所述反复对所述初始信道集合进行第二CCA检测，直至所述第二CCA检测结果为空闲，再继续所述第一CCA检测，包括：
反复对所述初始信道集合中的所有信道进行第二CCA检测，直至所述初始信道集合中的所有信道的第二CCA检测结果为空闲，再继续所述第一CCA检测。
可选的，所述初始信道集合包括至少两个信道，所述反复对所述初始信道集合进行第二CCA检测，直至所述第二CCA检测结果为空闲，再继续所述第一CCA检测，包括：
采用二分法得到所述初始信道集合的第一子集；
对所述第一子集进行第二CCA检测；
若所述第一子集的第二CCA检测结果为空闲，则继续所述第一CCA检测；
若所述第一子集的第二CCA检测结果为忙碌，则采用二分法得到所述第一子集的第二子集；
对所述第二子集进行第二CCA检测；
若所述第二子集的第二CCA检测结果为空闲，则继续所述第一CCA检测；
若所述第二子集的第二CCA检测结果为忙碌，则判断所述第二子集是否由所述初始信道集合的一个信道组成；
若所述第二子集由所述初始信道集合的一个信道组成，则反复对所述第二子集进行第二CCA检测，直至所述第二子集的第二CCA检测结果为空闲，再继续所述第一CCA检测。
可选的，在所述对所述初始信道集合中的所有信道进行第一CCA检测之前，所述方法还包括：
确定所述初始信道集合中信道的个数；
根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限，所述第一 门限确定公式为：Y＝X+3*log2M，其中，所述Y为所述第一门限，所述X为带宽为20MHz的信道对应的门限，log2M为以2为底M的对数，所述M为参与CCA检测的信道的个数；
所述对所述初始信道集合中的所有信道进行第一CCA检测，包括：
采用所述第一门限对所述初始信道集合中的所有信道进行所述第一CCA检测。
相关技术中确定出的CCA检测的门限与参与CCA检测的信道的个数不相关，该CCA检测的门限无法适用于不同的场景。本申请实中确定出的初始CCA检测的门限均与参与CCA检测的信道的个数相关，也即本申请中确定出的初始CCA检测的门限能够较好的适应于不同的场景。
可选的，在所述根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限之前，所述方法还包括：
检测预设范围内是否存在异系统设备，所述预设范围内的设备与所述通信设备的距离小于预设距离；
若所述预设范围内存在所述异系统设备，则根据所述初始信道集合中信道的个数以及第二门限确定公式确定第二门限，所述第二门限确定公式为：
Figure PCTCN2017090045-appb-000001
所述对所述初始信道集合中的所有信道进行第一CCA检测，包括：
采用所述第二门限对所述初始信道集合中的所有信道进行第一CCA检测；
所述根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限，包括：
若所述预设范围内不存在所述异系统设备，则根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限；
其中，XThresh_max为所述第二门限，
Figure PCTCN2017090045-appb-000002
为Tmax+10-3*log2(M)-∑I与Xr中的最小值，Tmax＝-75+10*log10BW，log10BW为以10为底BW的对数，BW为所述初始信道集合对应的频带宽度，dB为分贝，I为异系统设备的干扰值，∑I为所述预设范围内的所有异系统设备的干扰值之和，Xr为最大允许发射门限。
可选的，所述第一CCA检测的时间周期包括一个16us的固定时间段和n个9us的时隙，所述n为大于或等于零的整数。
可选的，所述预设时间段为9us或25us。
第三方面，提供了一种数据传输装置，用于通信设备，所述数据传输装置包括至少一个模块，所述至少一个模块用于实现上述第一方面或第一方面中任意一种可能的实现方式所述的数据传输方法。
第四方面，提供了一种数据传输装置，用于通信设备，所述数据传输装置包括至少一个模块，所述至少一个模块用于实现上述第二方面或第二方面中任意一种可能的实现方式所述的数据传输方法。
第五方面，提供了一种数据传输装置，用于通信设备，所述数据传输装置包括：至少一个处理器、至少一个网络接口、存储器以及至少一个总线，存储器与网络接口分别通过总线与处理器相连；处理器被配置为执行存储器中存储的指令；处理器通过执行指令来实 现上述第一方面或第一方面中任意一种可能的实现方式所提供的数据传输方法。
第六方面，提供了一种数据传输装置，用于通信设备，所述数据传输装置包括：至少一个处理器、至少一个网络接口、存储器以及至少一个总线，存储器与网络接口分别通过总线与处理器相连；处理器被配置为执行存储器中存储的指令；处理器通过执行指令来实现上述第二方面或第二方面中任意一种可能的实现方式所提供的数据传输方法。
第七方面，提供了一种数据传输系统，所述数据传输系统包括通信设备，所述通信设备包括第三方面、第四方面、第五方面或第六方面所述的数据传输装置。
第八方面，提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述计算机可读存储介质在计算机上运行时，使得计算机执行上述第一方面或第二方面所述的方法。
第九方面，提供了一种包含指令的计算机程序产品，当所述计算机程序产品在计算机上运行时，使得计算机执行上述第一方面或第二方面所述的方法。
上述第三方面至第九方面所获得的技术效果与上述第一方面和第二方面中对应的技术手段获得的技术效果近似，本申请在此不再赘述。
综上所述，本申请提供了一种数据传输方法、装置及系统，在该数据传输方法中，通信设备在确定当前可接入的所有信道，并确定了初始CCA检测结果为空闲的目标信道后，又对预设信道进行了辅助CCA检测，且在辅助CCA检测结果为空闲时，才在目标信道上传输目标数据。也即，NRU通信设备在确定传输数据的目标信道后，需要检测802.11通信设备是否在对应相同频率的大带宽信道上传输数据，只有在802.11通信设备未在该相同频率的大带宽信道上传输数据时，才在该目标信道上传输数据，有效的避免了在传输目标数据时，NRU通信设备与802.11通信设备发生碰撞，实现了NRU通信设备与802.11通信设备的互相兼容。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本申请。
附图说明
图1为本发明实施例提供的一种数据传输场景示意图；
图2为本发明实施例提供的一种数据传输装置的结构示意图；
图3为本发明实施例提供的一种数据传输方法的方法流程图；
图4为本发明实施例提供的另一种数据传输方法的方法流程图；
图5为本发明实施例提供的一种CCA检测示意图；
图6为本发明实施例提供的另一种CCA检测示意图；
图7为本发明实施例提供的又一种CCA检测示意图；
图8为本发明实施例提供的再一种CCA检测示意图；
图9为本发明实施例提供的另一种数据传输场景示意图；
图10为本发明实施例提供的又一种数据传输方法的方法流程图；
图11为本发明实施例提供的另一种数据传输装置的结构示意图；
图12为本发明实施例提供的又一种数据传输装置的结构示意图；
图13为本发明实施例提供的再一种数据传输装置的结构示意图；
图14为本发明另一实施例提供的一种数据传输装置的结构示意图；
图15为本发明另一实施例提供的另一种数据传输装置的结构示意图；
图16为本发明另一实施例提供的又一种数据传输装置的结构示意图；
图17为本发明另一实施例提供的再一种数据传输装置的结构示意图；
图18为本发明又一实施例提供的一种数据传输装置的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。
图1为本发明实施例提供的一种数据传输场景示意图，如图1所示，NRU通信设备01可以在对应60GHz的小带宽(如200兆赫兹的带宽)信道上传输数据；802.11ad通信设备11可以在对应60GHz的大带宽(如2.16GHz的带宽)上传输数据；802.11ay通信设备21可以在对应60GHz的大带宽(如2.16GHz的带宽)上传输数据。实际应用中该NRU通信设备01传输数据的信道的带宽也可以为小于2.16GHz的其他带宽，本发明实施例对此不作限定。
如图2所示，本发明实施例提供了一种数据传输装置31，该数据传输装置31可以用于NRU通信设备，该数据传输装置31可以包括：至少一个处理器311(例如中央处理器)，至少一个网络接口312，存储器313，和至少一个总线314，用于实现这些装置之间的连接通信，存储器313与网络接口312分别可以通过总线314与处理器311相连。处理器311用于执行存储器313中存储的可执行模块，例如计算机程序。存储器313可能包含高速随机存取存储器(Random Access Memory，RAM)，也可能还包括非不稳定的存储器(non-volatile memory)，例如至少一个磁盘存储器。通过至少一个网络接口312(可以是有线或者无线)实现该数据传输装置与至少一个其他网元之间的通信连接，可以使用互联网，广域网，本地网，城域网等。在一些实施方式中，存储器313存储了程序3131，程序3131可以被处理器311执行。
如图3所示，本发明实施例提供了一种数据传输方法，该数据传输方法可以用于通信设备，该通信设备可以为图1中的NRU通信设备01，该数据传输方法可以被图2中的处理器311执行程序3131来实现。该数据传输方法可以包括：
步骤101、NRU通信设备根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定至少一个初始数据中的目标数据。
示例的，NRU通信设备上可以存储有多种数据类型与多个优先级的一一对应关系，也即在NRU通信设备上存储的一一对应关系中，每种数据类型可以对应一个优先级。NRU通信设备在确定待传输的某一初始数据后，可以根据该初始数据的数据类型，以及NRU通信设备上存储的一一对应关系，确定该初始数据对应的优先级，进而确定待传输的至少一个初始数据中每个初始数据的优先级，并根据该待传输的至少一个初始数据中每个初始数据的优先级，确定目标数据。
具体的，NRU通信设备可以将该至少一个初始数据中，对应的优先级最高的初始数据确定为目标数据；或者，NRU通信设备可以将该至少一个初始数据中，对应的优先级最低 的初始数据确定为目标数据；或者，NRU通信设备可以根据预设的规则，将该至少一个初始数据中，对应的优先级满足预设条件的初始数据确定为目标数据。实际应用中，NRU通信设备还可以通过其他方式在该至少一个初始数据中确定出一个初始数据为目标数据，本发明实施例对此不作限定。
进一步的，该NRU通信设备中存储的一一对应关系中记录的优先级可以包括：增强分布式信道访问(Enhanced distributed channel access，EDCA)机制中的第一优先级、第二优先级、第三优先级和第四优先级，以及分布式协调功能(Distributed coordination function，DCF)机制中优先级。该至少一个初始数据中的某一初始数据对应的优先级可以为EDCA机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级，或者DCF机制中优先级。
具体的，该EDCA机制中的第一优先级可以为EDCA机制中的AC-VI(Access category video)优先级，第一优先级中的最小竞争窗口(Minimum contention window，CWmin)值可以为7，最大竞争窗口(Maximum contention window，CWmax)值可以为15，固有帧间时隙数(Arbitrary inter-frame space number，AIDSN)值可以为2，传输机会限制(Transmission opportunity limit，TXOP limit)值可以为1.504ms(毫秒)；EDCA机制中的第二优先级可以为EDCA机制中的AC-VO(Access category voice)优先级，第二优先级中的CWmin值可以为15，CWmax值可以为31，AIDSN值可以为2，TXOP limit值可以为3.008ms。
EDCA机制中的第三优先级可以为EDCA机制中的AC-BE(Access categorybest effort)优先级，第三优先级中的CWmin值可以为31，CWmax值可以为1023，AIDSN值可以为3，TXOP limit值可以为0。EDCA机制中的第四优先级可以为EDCA机制中的AC-BK(Access category background)优先级，第四优先级中的CWmin值可以为31，CWmax值可以为1023，AIDSN可以为7，TXOP limit值可以为0。
步骤102、NRU通信设备确定初始信道集合。
NRU通信设备在待传输的至少一个初始数据中，确定出目标数据后，可以确定该NRU通信设备当前可接入的所有信道，进而根据该NRU通信设备当前可接入的所有信道确定初始信道集合，该初始信道集合可以包括该NRU通信设备当前可接入的所有信道。需要说明的是，NRU通信设备确定当前可接入的信道的具体步骤可以参考相关技术中通信设备确定当前可接入的信道的具体步骤，本发明实施例对此不做赘述。示例的，步骤102中所提到的初始信道集合中的每个信道可以为对应的频率为60GHz，带宽为200兆的信道，该初始信道集合中的每个信道的带宽还可以为除200兆以外的其他小于2.16GHz的带宽，本发明实施例对此不作限定。
步骤103、NRU通信设备采用EDCA机制对初始信道集合中的所有信道进行初始CCA检测。
示例的，在确定初始信道集合后，该NRU通信设备可以采用EDCA机制对初始信道集合中的所有信道进行初始CCA检测，也即，对该初始信道集合中的每个对应的频率为60GHz，且带宽为200兆的信道进行初始CCA检测，且具体的初始CCA检测步骤可以参考EDCA机制中的CCA检测步骤，本发明实施例对此不作赘述。具体的，NRU通信设备对初始信道集合进行初始CCA检测，判断该初始信道集合上的信号能量是否超过初始CCA检测的门限，若该初始信道集合上的信号能量超过初始CCA检测的门限，则NRU通信设 备可以认为初始信道集合上有其它设备在通信，若该初始信道集合上的信号能量未超过初始CCA检测的门限，则NRU通信设备可以认为初始信道集合上没有其它设备在通信。
步骤104、NRU通信设备确定初始信道集合中的初始CCA检测结果为空闲的信道为目标信道。
在对该初始信道集合中的每个信道进行初始CCA检测后，可以得到每个信道的初始CCA检测结果，示例的，每个初始信道的初始CCA检测结果可以为忙碌或空闲。在步骤104中，NRU通信设备可以根据该初始信道集合中的每个信道的初始CCA检测结果，确定初始CCA检测结果为空闲的信道为目标信道。
示例的，如表1所示，若初始信道集合包括信道1、信道2、信道3和信道4，且信道1的初始CCA检测结果为空闲，信道2的初始CCA检测结果为忙碌，信道3的初始CCA检测结果为空闲，信道4的初始CCA检测结果为忙碌，则在步骤103中，该NRU通信设备可以确定该初始信道集合中的目标信道为信道1和信道3。
表1
初始信道集合中的信道 初始CCA检测结果
信道1 空闲
信道2 忙碌
信道3 空闲
信道4 忙碌
步骤105、NRU通信设备对预设信道进行辅助CCA检测。
示例的，该预设信道可以为相关技术中802.11ad通信设备或802.11ay通信设备用于传输数据的信道，也即该预设信道对应的频率可以为60GHz，该预设频道的带宽可以为2.16GHz，该初始信道集合中的每个信道均可以为该预设信道的子信道。
在确定该目标信道后，还需要对该预设信道进行辅助CCA检测，确定该预设信道的辅助CCA检测结果是否为忙碌，也即检测该预设信道上是否有802.11ad通信设备或802.11ay通信设备在传输数据。若该预设信道的辅助CCA检测结果为忙碌，则可以确定该预设信道上有802.11ad通信设备或802.11ay通信设备在传输数据。若该预设信道的辅助CCA检测结果为空闲，则可以确定该预设信道上没有802.11ad通信设备和802.11ay通信设备在传输数据。
步骤106、若辅助CCA检测结果为空闲，则NRU通信设备在目标信道上进行目标数据的传输。
若该预设信道的辅助CCA检测结果为空闲，则NRU通信设备可以确定此时该预设信道上并没有802.11ad通信设备和802.11ay通信设备在传输数据，若此时NRU通信设备在该预设信道的子信道(如目标信道)上传输数据，并不会与802.11ad通信设备和802.11ay通信设备发生碰撞，能够较顺利的传输目标数据。因此，在该预设信道的辅助CCA检测结果为空闲时，NRU通信设备可以在该目标信道上进行目标数据的传输。
若步骤105中确定该预设信道的辅助CCA检测结果为忙碌，则NRU通信设备可以确定此时该预设信道上存在802.11ad通信设备或802.11ay通信设备在传输数据，若此时NRU通信设备在该预设信道的子信道(如目标信道)上传输数据，NRU通信设备会与802.11ad 通信设备或802.11ay通信设备发生碰撞，无法顺利的传输目标数据。因此，在该预设信道的辅助CCA检测结果为忙碌时，NRU通信设备不可以传输该目标数据，NRU通信设备可以重复执行步骤105，直至预设信道的辅助CCA检测结果为空闲，然后再在目标信道上传输目标数据。
示例的，若本发明实施例中需要传输数据的NRU通信设备为图1中的NRU通信设备01，且该NRU通信设备01需要传输目标数据，则在确定该预设信道的辅助CCA检测结果为空闲后，该NRU通信设备01可以确定图1中的802.11ad通信设备11此时未传输数据，以及图1中的802.11ay通信设备21此时未传输数据，此时NRU通信设备可以在目标信道上传输目标数据。也即，本发明实施例中，NRU通信设备能够在对应较高频率(如60GHz)的信道上传输数据，大大提高了数据传输的效率，且能够与现有的802.11ad通信设备以及802.11ay通信设备兼容。
综上所述，由于本发明实施例提供的数据传输方法中，通信设备在确定当前可接入的所有信道，并确定了初始CCA检测结果为空闲的目标信道后，又对预设信道进行了辅助CCA检测，且在辅助CCA检测结果为空闲时，才在目标信道上传输目标数据。也即，NRU通信设备在确定传输数据的目标信道后，需要检测802.11通信设备是否在对应相同频率的大带宽信道上传输数据，只有在802.11通信设备未在该相同频率的大带宽信道上传输数据时，才在该目标信道上传输数据，有效的避免了在传输目标数据时，NRU通信设备与802.11通信设备发生碰撞，实现了NRU通信设备与802.11通信设备的互相兼容。
如图4所示，本发明实施例提供了另一种数据传输方法，该数据传输方法可以用于通信设备，该通信设备可以为图1中的NRU通信设备01，该数据传输方法可以被图2中的处理器311执行程序3131来实现。该数据传输方法可以包括：
步骤201、NRU通信设备根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定至少一个初始数据中的目标数据。
示例的，NRU通信设备上可以存储有多种数据类型与多个优先级的一一对应关系，也即在NRU通信设备上存储的一一对应关系中，每种数据类型可以对应一个优先级。NRU通信设备在确定待传输的某一初始数据后，可以根据该初始数据的数据类型，以及NRU通信设备上存储的一一对应关系，确定该初始数据对应的优先级，进而确定待传输的至少一个初始数据中每个初始数据的优先级，并根据该待传输的至少一个初始数据中每个初始数据的优先级，确定目标数据。
进一步的，该NRU通信设备中存储的一一对应关系中记录的优先级可以包括：先听后讲(listenbefore talk，LBT)机制中的第一优先级、第二优先级、第三优先级和第四优先级。该至少一个初始数据中的某一初始数据对应的优先级可以为LBT机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级。
具体的，该LBT机制中的第一优先级中，固定退避时隙数(mp)值可以为1，CWmin值可以为3，CWmax值可以为7，TXOP limit值可以为2ms，CWp可选大小(allowed CWp sizes)可以为{3，7}；LBT机制中的第二优先级中，mp值可以为1，CWmin值可以为7，CWmax值可以为15，TXOPlimit值可以为3ms，allowed CWp sizes可以为{7，15}；LBT机制中的第三优先级中，mp值可以为3，CWmin值可以为15，CWmax值可以为63，TXOP  limit值可以为8ms或15ms，allowed CWp sizes可以为{15，31，63}；LBT机制中的第四优先级中，mp值可以为7，CWmin值可以为15，CWmax值可以为1023，TXOPl imit值可以为8ms或15ms，allowed CWp sizes可以为{15，31，63，127，255，511，1023}。
步骤202、NRU通信设备确定初始信道集合。
示例的，步骤202中NRU通信设备确定初始信道集合的具体步骤可以参考上一实施例中的步骤102中NRU通信设备确定初始信道集合的具体步骤，本发明实施例在此不做赘述。
步骤203、NRU通信设备确定初始CCA检测的门限。
NRU通信设备在确定初始信道集合后，可以确定初始信道集合中信道的个数，并检测预设范围内是否存在异系统设备。示例的，该异系统设备可以为授权辅助接入(licensed-assisted access，LAA)系统中的802.11ad通信设备或802.11ay通信设备。也即，该NRU通信设备可以检测预设范围内是否存在与该NRU通信设备传输数据的信道对应的频率相同的异系统设备(如802.11ad通信设备或802.11ay通信设备)。需要说明的是，该预设范围内的设备与该NRU通信设备的距离小于预设距离。
一方面，若预设范围内不存在异系统设备，则NRU通信设备可以根据初始信道集合中信道的个数以及第一门限确定公式确定第一门限，并将该第一门限作为初始CCA检测的门限。具体的，第一门限确定公式可以为：Y＝X+3*log2M，其中，Y为第一门限，X为带宽为20MHz(兆赫兹)的信道对应的门限，log2M为以2为底M的对数，M为参与CCA检测的信道的个数。
另一方面，若NRU通信设备检测到该预设范围内存在异系统设备，则该NRU通信设备可以根据初始信道集合中信道的个数以及第二门限确定公式确定第二门限，并将该第二门限作为初始CCA检测的门限。具体的，该第二门限确定公式可以为：
Figure PCTCN2017090045-appb-000003
其中，XThresh_max为第二门限，
Figure PCTCN2017090045-appb-000004
为Tmax+10-3*log2(M)-∑I与Xr中的最小值，Tmax＝-75+10*log10BW，BW为初始信道集合对应的频带宽度，dB为分贝，I为异系统设备的干扰值，∑I为预设范围内的所有异系统设备的干扰值之和，Xr为最大允许发射门限(也即相关法律规定的最大允许发射门限)，M为参与CCA检测的信道的个数。
相关技术中，CCA检测的门限可以由如下公式决定：
Figure PCTCN2017090045-appb-000005
其中，XT为相关技术中确定的CCA检测的门限，Xr为最大允许发射门限，Tmax(dBm)＝-75dBm/MHz+10log10(BW)，dBm为毫分贝，MHz为兆赫兹，log10(BW)为以10为底BW的对数。
也即，相关技术中确定出的CCA检测的门限与参与CCA检测的信道的个数不相关，该CCA检测的门限无法适用于不同的场景。在步骤203中确定出的初始CCA检测的门限均与参与CCA检测的信道的个数相关，也即本发明实施例中确定出的初始CCA检测的门限能够较好的适应于不同的场景。
步骤204、NRU通信设备对初始信道集合中的所有信道进行初始CCA检测。
若步骤203中确定出的初始CCA检测的门限为第一门限，则步骤204中NRU通信设备可以采用第一门限对初始信道集合中的所有信道进行初始CCA检测；若步骤203中确定出的初始CCA检测的门限为第二门限，则步骤204中NRU通信设备可以采用第二门限对初始信道集合中的所有信道进行初始CCA检测。示例的，该初始CCA检测可以仅仅包括第一CCA检测，或者，该初始CCA检测可以包括第一CCA检测和第二CCA检测。
示例的，NRU通信设备在采用步骤203中确定出的初始CCA检测的门限，对初始信道集合中的所有信道进行初始CCA检测时，NRU通信设备可以首先对初始信道集合中的所有信道进行第一CCA检测，若在第一CCA检测过程中的某一时刻，该初始信道集合的第一CCA检测结果为忙碌，则停止对该初始信道集合进行第一CCA检测，并反复对初始信道集合进行第二CCA检测，直至该初始信道集合的第二CCA检测结果为空闲，再继续第一CCA检测，直至第一CCA检测结束。需要说明的是，该第一CCA检测和第二CCA检测中所采用的门限均可以为步骤203中确定出的门限。
NRU通信设备可以在初始信道集合上进行一个周期的第一CCA检测，该第一CCA检测的时间周期可以包括一个16us(微秒)的固定时间段(Td)和n个9us的时隙(slot)，n为大于或等于零的整数。也即，该NRU通信设备可以在该初始信道集合上进行Td+n*slot(一个周期)的LBT退避，在Td+n*slot内对该初始信道集合进行第一CCA检测，并在开始对该初始信道集合进行第一CCA检测时，采用退避计数器开始计数。当该退避计数器当前记录的数字为0时，NRU通信设备可以确定此时该第一CCA检测的一个时间周期结束。
如果在NRU通信设备对初始信道集合进行第一CCA检测的过程中的某一时刻，该初始信道集合的第一CCA检测结果为忙碌，则此时退避计数器停止计数，NRU通信设备需要反复的对该初始信道集合进行第二CCA检测，该第二CCA检测的时间周期也可以包括一个16us(微秒)的固定时间段(Td)和n个9us的时隙(slot)，n为大于或等于零的整数，且第二CCA检测的周期中slot的个数n和第一CCA检测的周期中slot的个数n可以不同。若某一时刻该初始信道集合的第二CCA检测结果为空闲，则NRU通信设备可以启动对该初始信道集合的第一CCA检测，也即，可以控制退避计数器继续计数，并继续对该初始信道集合进行第一CCA检测。
一方面，如图5所示，初始信道集合可以包括信道CC1、信道CC2、信道CC3和信道CC4，在对该初始信道集合中的所有信道进行第一CCA检测的过程中，若某一时刻该第一CCA检测结果为忙碌，则NRU通信设备需要停止对该初始信道集合进行第一CCA检测，并开始对该初始信道集合反复进行第二CCA检测。NRU通信设备在反复对初始信道集合进行第二CCA检测时，NRU通信设备可以反复对初始信道集合中的所有信道进行第二CCA检测，也即NRU通信设备可以对该初始信道集合(包括信道CC1、信道CC2、信道CC3和信道CC4)进行第一次第二CCA检测，若该第一次第二CCA检测的结果为忙碌，则该NRU通信设备需要对该初始信道集合(包括信道CC1、信道CC2、信道CC3和信道CC4)进行第二次第二CCA检测，若该第二次第二CCA检测的结果为忙碌，则该NRU通信设备需要对该初始信道集合进行第三次第二CCA检测，如此循环往复，直至初始信道集合中的所有信道的第二CCA检测结果为空闲，再继续第一CCA检测。
另一方面，初始信道集合可以包括至少两个信道，NRU通信设备在反复对初始信道集合进行第二CCA检测时，NRU通信设备可以采用二分法得到初始信道集合的第一子集，并对第一子集进行第二CCA检测，若第一子集的第二CCA检测结果为空闲，则继续对该初 始信道集合进行第一CCA检测；若第一子集的第二CCA检测结果为忙碌，则采用二分法得到第一子集的第二子集，并对该第二子集进行第二CCA检测；若第二子集的第二CCA检测结果为空闲，则继续第一CCA检测；若第二子集的第二CCA检测结果为忙碌，则需要判断该第二子集是否由初始信道集合的一个信道组成；若第二子集由初始信道集合的一个信道组成，则反复对第二子集进行第二CCA检测，直至第二子集的第二CCA检测结果为空闲，再继续第一CCA检测。
如果该初始信道集合包括P个信道，在NRU通信设备在对初始信道集合进行第一CCA检测的过程中，某一时刻的第一CCA检测结果为忙碌，则在该P个信道中采用二分法选取P/2个信道，并对该P/2个信道进行第二CCA检测，需要说明的是，此时参与第二CCA检测的信道的个数为P/2，此时的第二CCA检测的门限随着参与CCA检测的信道个数的变化而发生了改变。如果该P/2个信道的第二CCA检测结果为空闲，则继续对该初始信道集合进行第一CCA检测；如果该P/2个信道的第二CCA检测结果仍然为忙碌，则在该P/2个信道中采用二分法选取P/4个信道，并重复上述步骤，直至采用二分法仅仅选取得到的子集仅仅包括一个信道(该一个信道可以为带宽为20MHz的信道)，则反复对该一个信道进行第二CCA检测，直至该一个信道的第二CCA检测的结果为空闲，才继续进行该第一CCA检测。
如图6所示，初始信道集合可以包括信道CC1、信道CC2、信道CC3和信道CC4，且每个信道均为带宽为20MHz的信道，或者带宽为200MHz的信道，或者其他带宽小于2.16GHz的信道。在NRU通信设备在对初始信道集合中的所有信道进行第一CCA检测的过程中，某一时刻的第一CCA检测结果为忙碌，则在该上述四个信道中采用二分法选取两个信道(如信道CC1和信道CC2)，并对选取得到的两个信道进行第二CCA检测，也即对该初始信道集合进行第一次第二CCA检测；如果该两个信道的第二CCA检测结果仍然为忙碌，则在该两个信道中采用二分法选取一个信道(如信道CC1)，由于此时采用二分法仅仅选取得到一个信道，所以此时NRU通信设备需要反复对信道CC1进行第二CCA检测，直至信道CC1的第二CCA检测的结果为空闲，才继续进行该第一CCA检测。假设信道CC1的第一次第二CCA检测结果(也即初始信道集合的第二次第二CCA检测结果)为忙碌，且信道CC1的第二次第二CCA检测结果(也即初始信道集合的第三次第二CCA检测结果)为空闲，则继续对初始信道集合进行第一CCA检测。
步骤205、NRU通信设备确定初始信道集合中的初始CCA检测结果为空闲的信道为目标信道。
具体的，NRU通信设备在对该初始信道集合进行初始CCA检测结束后，也即在对该初始信道集合进行第一CCA检测结束后，可以将该第一CCA检测结束前的预设时间段内，初始信道集合中的第一CCA检测结果为空闲的信道确定为目标信道。示例的，该第一CCA检测结束前的预设时间段可以为9us或25us。可选的，该预设时间段还可以为其他时间段，本发明实施例对此不做限定。
步骤206、NRU通信设备对预设信道进行辅助CCA检测。
示例的，步骤206中NRU通信设备对预设信道进行辅助CCA检测的具体步骤可以参考上一实施例中的步骤105中NRU通信设备对预设信道进行辅助CCA检测的具体步骤，本发明实施例在此不做赘述。
步骤207、若辅助CCA检测结果为空闲，则NRU通信设备在目标信道上进行目标数据的传输。
示例的，步骤207中NRU通信设备在目标信道上进行目标数据的传输的具体步骤可以参考上一实施例中的步骤106中NRU通信设备在目标信道上进行目标数据的传输的具体步骤，本发明实施例在此不做赘述。
若步骤206中辅助CCA检测结果为忙碌，则NRU通信设备需要重复执行执行步骤206，直至辅助CCA检测结果为空闲为止。
如图7所示，相关技术中，发送端在确定当前可接入的多个信道(图7中以多个信道包括信道CC1、信道CC2、信道CC3和信道CC4为例)后，首先可以随机的确定每个信道的时隙数，并在一个时间周期内(包括一个固定时间段Td以及每个信道的n个时隙slot内，n为信道的时隙数)，对信道进行CCA检测，以确定信道的状态为空闲还是忙碌。需要说明的是，发送端随机确定的每个信道的时隙数可能不同，所以在对某一信道CCA检测完毕后，还需要等待对其他信道的CCA检测，直至对所有的信道均CCA检测完毕。然后，可以将在CCA检测过程中，所有时刻的CCA检测结果均为空闲的信道(如图7中的信道CC1、信道CC3和信道CC4)作为第一信道，并将在CCA检测过程中存在至少一个时刻的CCA检测结果为忙碌的信道(如图7中的信道CC2)作为第二信道。最后，需要在额外的一个时隙内对每个第一信道再次进行CCA检测，并在该额外的一个时隙内CCA检测结果为空闲的第一信道(如图7中的信道CC1和信道CC4)上传输数据，禁止在第二信道(如图7中的信道CC2)以及该额外的一个时隙内CCA检测结果为忙碌的第一信道(如图7中的信道CC3)上传输数据。需要说明的是，该额外的一个时隙可以为在所有的CCA检测完毕后的一个时隙。
由于相关技术中，发送端禁止在第二信道以及该额外的一个时隙内CCA检测结果为忙碌的第一信道上传输数据，且在第一信道上传输数据时，禁止传输数据的信道有可能处于空闲状态，使得用于传输数据的信道的带宽较小，因此，数据传输的效率较低。本发明实施例中，NRU通信设备在对该初始信道集合进行第一CCA检测的过程中，若某一时刻的第一CCA检测结果为忙碌，则该NRU通信设备停止对初始信道集合进行第一CCA检测，并开始反复对该初始信道集合进行第二CCA检测，直至该第二CCA检测结果为空闲，才继续对该初始信道集合进行第一CCA检测，这样能够对相关技术中的第二信道以及该额外的一个时隙内CCA检测结果为忙碌的第一信道进行有效的利用，从而增大了用于传输数据的信道的带宽，提高了数据传输的效率，更适用于NRU中的增强数据分流(eMBB offloading)场景。
如图8所示，相关技术中，发送端在确定当前可接入的多个信道(图8中以多个信道包括信道CC1、信道CC2、信道CC3和信道CC4为例)后，首先可以随机的确定该多个信道中某一信道(如信道CC1)的时隙数，并在一个时间周期内(包括一个固定时间段Td以及该一个信道的n个时隙slot内，n为信道的时隙数，图8中以n为9为例)，对该一个信道(信道CC1)进行CCA检测，以确定信道的状态为空闲还是忙碌。若在该CCA检测过程中，该一个信道的CCA检测结果为空闲，则还需要在该n个slot中的最后一个slot对所有信道进行回看，判断在该最后一个slot内，每个信道的CCA检测结果为空闲还是忙碌，若所有信道中第三信道(如信道CC1、信道CC2和信道CC3)在最后一个slot内的CCA 检测结果为空闲，所有信道中的第四信道(如信道CC4)在最后一个slot内的CCA检测结果为忙碌，则此时可以在第三信道(如信道CC1、信道CC2和信道CC3)上传输数据，并禁止在第四信道(如信道CC4)上传输数据。
由于相关技术中，发送端禁止在第四信道上传输数据，且在第三信道上传输数据时，禁止传输数据的信道有可能处于空闲状态，使得用于传输数据的信道的带宽较小，因此，数据传输的效率较低。本发明实施例中，NRU通信设备在对该初始信道集合进行第一CCA检测的过程中，若某一时刻的第一CCA检测结果为忙碌，则该NRU通信设备停止对初始信道集合进行第一CCA检测，并开始反复对该初始信道集合进行第二CCA检测，直至该第二CCA检测结果为空闲，才继续对该初始信道集合进行第一CCA检测，这样能够对相关技术中的第四信道进行有效的利用，从而增大了用于传输数据的信道的带宽，提高了数据传输的效率，更适用于NRU中的eMBB offloading场景。
也即，本发明实施例中，NRU通信设备能够在对应较高频率(如60GHz)的较大带宽的信道上传输数据，大大提高了数据传输的效率，适用于eMBB offloading的场景，且能够与现有的802.11ad通信设备以及802.11ay通信设备兼容。
综上所述，由于本发明实施例提供的数据传输方法中，通信设备在确定当前可接入的所有信道，并确定了初始CCA检测结果为空闲的目标信道后，又对预设信道进行了辅助CCA检测，且在辅助CCA检测结果为空闲时，才在目标信道上传输目标数据。也即，NRU通信设备在确定传输数据的目标信道后，需要检测802.11通信设备是否在对应相同频率的大带宽信道上传输数据，只有在802.11通信设备未在该相同频率的大带宽信道上传输数据时，才在该目标信道上传输数据，有效的避免了在传输目标数据时，NRU通信设备与802.11通信设备发生碰撞，实现了NRU通信设备与802.11通信设备的互相兼容。
图9为本发明实施例提供的另一种数据传输场景示意图，如图9所示，NRU通信设备01可以在对应60GHz的小带宽(如200MHz的带宽)信道上传输数据；802.11ad通信设备11可以在对应60GHz的大带宽(如2.16GHz的带宽)上传输数据；802.11ay通信设备21可以在对应60GHz的大带宽(如2.16GHz的带宽)上传输数据。下一代WiFi通信设备31可以在对应60GHz的大带宽上传输数据，还可以在对应60GHz的小带宽上传输数据。示例的，WiFi的英文可以为Wireless Fidelity，WiFi可以是基于IEEE 802.11b标准的无线局域网，下一代WiFi通信设备也可以称为下一代60GHz(Future Generation 60GHz，FG60)通信设备。实际应用中该NRU通信设备01传输数据的信道的带宽也可以为小于2.16GHz的其他带宽，本发明实施例对此不作限定。
如图10所示，本发明实施例提供了又一种数据传输方法，该数据传输方法可以用于通信设备，该通信设备可以为图9中的NRU通信设备01，该数据传输方法可以被图2中的处理器311执行程序3131来实现。该数据传输方法可以包括：
步骤301、NRU通信设备根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定至少一个初始数据中的目标数据。
示例的，步骤301中NRU通信设备确定目标数据的具体步骤可以参考步骤101或步骤201中NRU通信设备确定目标数据的具体步骤，本发明实施例在此不做赘述。
步骤302、NRU通信设备检测是否接收到FG60通信设备在竞争到预设信道后发送的前导码。
具体的，预设信道对应的频率为60GHz，预设信道的带宽为2.16GHz。FG60通信设备、802.11ad通信设备以及802.11ay通信设备均可以在该预设信道上传输数据。FG60通信设备在需要传输数据时，FG60通信设备需要首先与802.11ad通信设备和802.11ay通信设备竞争该预设信道。在该FG60通信设备竞争到预设信道后，该FG60通信设备可以广播前导码(predefined preamble)，该前导码可以包括用于指示数据传输的剩余时间的网络分配失量(NAV)，该NRU通信设备可以实时的检测是否接收到FG60通信设备发送的前导码。
若在步骤302中未接收到FG60通信设备在竞争到预设信道后发送的前导码，则NRU通信设备可以重复检测是否接收到FG60通信设备发送的前导码，也即重复执行步骤302，直至接收到前导码为止。
需要说明的是，在该FG60通信设备发送前导码前，该FG60通信设备可以在对应的频率为60GHz，且带宽为2.16GHz的预设信道上竞争信道，或者，该FG60通信设备可以在对应的频率为60GHz，且带宽为2.16GHz的预设信道上竞争信道，并在竞争到该预设信道后在该预设信道上传输数据；在该FG60通信设备发送前导码后，该FG60通信设备需要在对应的频率为60GHz的小带宽上与NRU通信设备竞争信道，并在竞争到信道后在该小带宽的信道上传输数据，示例的，该FG60通信设备传输数据的小带宽的信道可以与NRU通信设备传输数据的信道的带宽相同。也即，在FG60通信设备发送前导码后，FG60通信设备需要与NRU通信设备在相同带宽的信道上竞争，并在竞争到信道后传输数据。
若未接收到FG60通信设备发送的前导码，则执行步骤302；若接收到FG60通信设备发送的前导码，则执行步骤303。
步骤303、若NRU通信设备接收到FG60通信设备发送的前导码，则NRU通信设备确定初始信道集合。
示例的，步骤303中NRU通信设备确定初始信道集合的具体步骤可以参考步骤102中NRU通信设备确定初始信道集合的具体步骤，本发明实施例在此不做赘述。
步骤304、NRU通信设备对初始信道集合中的所有信道进行初始CCA检测。
步骤305、NRU通信设备确定初始信道集合中的初始CCA检测结果为空闲的信道为目标信道。
一方面，若步骤301参考步骤101，则步骤304中NRU通信设备进行初始CCA检测的具体步骤可以参考步骤103中NRU通信设备进行初始CCA检测的具体步骤，步骤305中NRU通信设备确定目标信道的具体步骤可以参考步骤104中确定目标信道的具体步骤，本发明实施例在此不做赘述。
另一方面，若步骤301参考步骤201，则在步骤304之前，NRU通信设备还可以确定初始CCA检测的门限，且确定初始CCA检测的门限的具体步骤可以参考步骤203中确定初始CCA检测的门限的具体步骤。步骤304中NRU通信设备进行初始CCA检测的具体步骤可以参考步骤204中NRU通信设备进行初始CCA检测的具体步骤，步骤305中NRU通信设备确定目标信道的具体步骤可以参考步骤205中确定目标信道的具体步骤，本发明实施例在此不做赘述。
步骤306、NRU通信设备在目标信道上进行目标数据的传输。
若NRU通信设备接收到FG60通信设备发送的前导码，且目标信道的初始CCA检测结果为空闲，则NRU通信设备可以在目标信道上传输数据，且不会与其他通信设备(如FG60通信设备、802.11ad通信设备或802.11ay通信设备)发生碰撞，能够较顺利的传输目标数据。进一步的，FG60通信设备发送的前导码可以包括用于指示数据传输的剩余时间的NAV，NRU通信设备可以根据NAV所指示的数据传输的剩余时间，在目标信道上进行目标数据的传输。
NRU通信设备需要传输目标数据时，则该NRU通信设备需要检测是否接收到FG60通信设备在竞争到预设信道后发送的前导码，若接收到该前导码，则可以确定初始信道集合，并对初始信道集合进行初始CCA检测，进而根据初始CCA检测结果确定目标信道，然后再在该目标信道上传输目标数据。
综上所述，由于本发明实施例提供的数据传输方法中，NRU通信设备在接收到FG60通信设备发送的前导码时，可以确定当前可接入的所有信道，并确定了初始CCA检测结果为空闲的目标信道后，在目标信道上传输目标数据。也即，NRU通信设备在确定802.11通信设备不在传输数据，且在确定FG60通信设备不在目标信道上传输数据后，才在该目标信道上传输数据，有效的避免了在传输目标数据时，NRU通信设备与802.11通信设备以及FG60通信设备发生碰撞，实现了NRU通信设备与802.11通信设备和FG60通信设备的互相兼容。
下述为本申请装置实施例，可以用于执行本申请方法实施例。对于本申请装置实施例中未披露的细节，请参照本申请方法实施例。
如图11所示，本发明实施例提供了另一种数据传输装置40，该数据传输装置40可以用于通信设备，该通信设备可以为图1中的NRU通信设备01，该数据传输装置40可以包括：
第一确定模块401，用于确定初始信道集合，初始信道集合包括通信设备当前可接入的所有信道；
第一检测模块402，用于对初始信道集合中的所有信道进行初始CCA检测；
第二确定模块403，用于确定初始信道集合中的初始CCA检测结果为空闲的信道为目标信道；
第二检测模块404，用于对预设信道进行辅助CCA检测，初始信道集合中的每个信道均为预设信道的子信道；
传输模块405，用于在辅助CCA检测结果为空闲时，在目标信道上进行目标数据的传输。
综上所述，由于本发明实施例提供的数据传输装置中，第一确定模块在确定当前可接入的所有信道，以及第二确定模块在确定了初始CCA检测结果为空闲的目标信道后，第二检测模块又对预设信道进行了辅助CCA检测，且在辅助CCA检测结果为空闲时，传输模块才在目标信道上传输目标数据。也即，NRU通信设备在确定传输数据的目标信道后，需要检测802.11通信设备是否在对应相同频率的大带宽信道上传输数据，只有在802.11通信设备未在该相同频率的大带宽信道上传输数据时，才在该目标信道上传输数据，有效的避 免了在传输目标数据时，NRU通信设备与802.11通信设备发生碰撞，实现了NRU通信设备与802.11通信设备的互相兼容。
如图12所示，本发明实施例提供了又一种数据传输装置40，在图11的基础上，该数据传输装置40还可以包括：
第三确定模块406，用于根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定至少一个初始数据中的目标数据，初始数据的优先级为：EDCA机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级，或者DCF机制中优先级。
可选的，第一检测模块402还可以用于：
采用EDCA机制对初始信道集合中的所有信道进行初始CCA检测；
如图13所示，本发明实施例提供了再一种数据传输装置40，在图11的基础上，该数据传输装置40还可以包括：
第四确定模块407，用于根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定至少一个初始数据中的目标数据，初始数据的优先级为：LBT机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级。
可选的，第一检测模块402还可以用于：
对初始信道集合中的所有信道进行第一CCA检测，若在第一CCA检测过程中的某一时刻第一CCA检测结果为忙碌，则停止第一CCA检测，并反复对初始信道集合进行第二CCA检测，直至第二CCA检测结果为空闲，再继续第一CCA检测，直至第一CCA检测结束；
第二确定模块403还可以用于：
将第一CCA检测结束前的预设时间段内，初始信道集合中的第一CCA检测结果为空闲的信道确定为目标信道；
可选的，第一检测模块402还可以用于：
反复对初始信道集合中的所有信道进行第二CCA检测，直至初始信道集合中的所有信道的第二CCA检测结果为空闲，再继续第一CCA检测。
可选的，初始信道集合包括至少两个信道，第一检测模块402还可以用于：
采用二分法得到初始信道集合的第一子集；
对第一子集进行第二CCA检测；
若第一子集的第二CCA检测结果为空闲，则继续第一CCA检测；
若第一子集的第二CCA检测结果为忙碌，则采用二分法得到第一子集的第二子集；
对第二子集进行第二CCA检测；
若第二子集的第二CCA检测结果为空闲，则继续第一CCA检测；
若第二子集的第二CCA检测结果为忙碌，则判断第二子集是否由初始信道集合的一个信道组成；
若第二子集由初始信道集合的一个信道组成，则反复对第二子集进行第二CCA检测，直至第二子集的第二CCA检测结果为空闲，再继续第一CCA检测。
如图14所示，本发明另一实施例提供了一种数据传输装置40，在图13的基础上，该数据传输装置40还可以包括：
第五确定模块408，用于确定初始信道集合中信道的个数；
第六确定模块409，用于根据初始信道集合中信道的个数以及第一门限确定公式确定第一门限，第一门限确定公式为：Y＝X+3*log2M，其中，Y为第一门限，X为带宽为20MHz的信道对应的门限，log2M为以2为底M的对数，M为参与CCA检测的信道的个数；
第三检测模块410，用于检测预设范围内是否存在异系统设备，预设范围内的设备与通信设备的距离小于预设距离；
第七确定模块411，用于在预设范围内存在异系统设备时，根据初始信道集合中信道的个数以及第二门限确定公式确定第二门限，第二门限确定公式为：
Figure PCTCN2017090045-appb-000006
第一检测模块402还可以用于：
采用第二门限对初始信道集合中的所有信道进行第一CCA检测；
第六确定模块409还可以用于：
在预设范围内不存在异系统设备时，根据初始信道集合中信道的个数以及第一门限确定公式确定第一门限；
其中，XThresh_max为第二门限，
Figure PCTCN2017090045-appb-000007
为Tmax+10-3*log2(M)-∑I与Xr中的最小值，Tmax＝-75+10*log10BW，log10BW为以10为底BW的对数，BW为初始信道集合对应的频带宽度，dB为分贝，I为异系统设备的干扰值，∑I为预设范围内的所有异系统设备的干扰值之和，Xr为最大允许发射门限。
第一检测模块402还可以用于：
采用第一门限对初始信道集合中的所有信道进行第一CCA检测。
可选的，第一CCA检测的时间周期包括一个16us的固定时间段和n个9us的时隙，n为大于或等于零的整数。
可选的，预设时间段为9us或25us。
可选的，预设信道对应的频率为60GHz，预设信道的带宽为2.16GHz。
综上所述，由于本发明实施例提供的数据传输装置中，第一确定模块在确定当前可接入的所有信道，以及第二确定模块在确定了初始CCA检测结果为空闲的目标信道后，第二检测模块又对预设信道进行了辅助CCA检测，且在辅助CCA检测结果为空闲时，传输模块才在目标信道上传输目标数据。也即，NRU通信设备在确定传输数据的目标信道后，需要检测802.11通信设备是否在对应相同频率的大带宽信道上传输数据，只有在802.11通信设备未在该相同频率的大带宽信道上传输数据时，才在该目标信道上传输数据，有效的避免了在传输目标数据时，NRU通信设备与802.11通信设备发生碰撞，实现了NRU通信设备与802.11通信设备的互相兼容。
如图15所示，本发明另一实施例提供了另一种数据传输装置50，该数据传输装置可以用于通信设备，该通信设备可以为图9通信设备01，该数据传输装置50可以包括：
第一检测模块501，用于检测是否接收到下一代FG60通信设备在竞争到预设信道后发送的前导码，预设信道对应的频率为60GHz，预设信道的带宽为2.16GHz；
第一确定模块502，用于在接收到前导码时，确定初始信道集合，初始信道集合包括通信设备当前可接入的所有信道，初始信道集合内的每个信道均为预设信道的子信道；
第二检测模块503，用于对初始信道集合中的所有信道进行初始空闲信道评估CCA检测；
第二确定模块504，用于确定初始信道集合中的初始CCA检测结果为空闲的信道为目标信道；
传输模块505，用于在目标信道上进行目标数据的传输。
综上所述，由于本发明实施例提供的数据传输装置中，第一检测模块在检测到接收到FG60通信设备发送的前导码时，第一确定模块确定当前可接入的所有信道，且第二确定模块确定了初始CCA检测结果为空闲的目标信道后，传输模块在目标信道上传输目标数据。也即，NRU通信设备在确定802.11通信设备不在传输数据，且在确定FG60通信设备不在目标信道上传输数据后，才在该目标信道上传输数据，有效的避免了在传输目标数据时，NRU通信设备与802.11通信设备以及FG60通信设备发生碰撞，实现了NRU通信设备与802.11通信设备和FG60通信设备的互相兼容。
可选的，上述第一检测模块501可以用于执行图10所示的实施例中的步骤302中的方法；第一确定模块502可以用于执行图10所示的实施例中的步骤303中的方法；第二检测模块503可以用于执行图10所示的实施例中的步骤304中的方法；第二确定模块504可以用于执行图10所示的实施例中的步骤305中的方法；传输模块505可以用于执行图10所示的实施例中的步骤306中的方法。
如图16所示，本发明另一实施例提供了又一种数据传输装置50，在图15的基础上，该数据传输装置50还可以包括：第三确定模块506，具有与第三确定模块406相同或相似的功能。该第三确定模块506可以用于执行图10所示的实施例中的步骤301参考步骤101中的方法。
如图17所示，本发明另一实施例提供了再一种数据传输装置50，在图15的基础上，该数据传输装置50还可以包括：第四确定模块507，具有与第四确定模块407相同或相似的功能。第四确定模块507可以用于执行图10所示的实施例中的步骤301参考步骤201中的方法。
如图18所示，本发明又一实施例提供了一种数据传输装置50，在图17的基础上，该数据传输装置50还可以包括：第五确定模块508、第六确定模块509、第三检测模块510和第七确定模块511。第五确定模块508具有与第五确定模块408相同或相似的功能；第六确定模块509具有与第六确定模块409相同或相似的功能；第三确定模块510具有与第三检测模块410相同或相似的功能；第七确定模块511具有与第七确定模块411相同或相似的功能。第五确定模块508、第六确定模块509、第三检测模块510和第七确定模块511共同用于执行图10所示的实施例中，在步骤304之前执行确定初始CCA检测的门限的方法，且执行确定初始CCA检测的门限的方法可以参考图4所示的实施例中步骤203中的方法。
可选的，前导码可以包括用于指示数据传输的剩余时间的NAV，传输模块506还可以用于：根据NAV所指示的数据传输的剩余时间，在目标信道上进行目标数据的传输。
综上所述，由于本发明实施例提供的数据传输装置中，第一检测模块在检测到接收到FG60通信设备发送的前导码时，第一确定模块确定当前可接入的所有信道，且第二确定模 块确定了初始CCA检测结果为空闲的目标信道后，传输模块在目标信道上传输目标数据。也即，NRU通信设备在确定802.11通信设备不在传输数据，且在确定FG60通信设备不在目标信道上传输数据后，才在该目标信道上传输数据，有效的避免了在传输目标数据时，NRU通信设备与802.11通信设备以及FG60通信设备发生碰撞，实现了NRU通信设备与802.11通信设备和FG60通信设备的互相兼容。
本发明实施例提供了一种数据传输系统，该数据传输系统可以包括通信设备，该通信设备可以包括图2、图11、图12、图13、图14、图15、图16、图17或图18所示的数据传输装置。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现，所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机的可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质，或者半导体介质(例如固态硬盘)等。
需要说明的是，本发明实施例提供的数据传输方法步骤的先后顺序可以进行适当调整，步骤也可以根据情况进行相应增减，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化的方法，都应涵盖在本申请的保护范围之内，因此不再赘述。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (17)

  1. 一种数据传输方法，其特征在于，用于通信设备，所述方法包括：
    确定初始信道集合，所述初始信道集合包括所述通信设备当前可接入的所有信道；
    对所述初始信道集合中的所有信道进行初始空闲信道评估CCA检测；
    确定所述初始信道集合中的初始CCA检测结果为空闲的信道为目标信道；
    对预设信道进行辅助CCA检测，所述初始信道集合中的每个信道均为所述预设信道的子信道；
    若所述辅助CCA检测结果为空闲，则在所述目标信道上进行目标数据的传输。
  2. 根据权利要求1所述的方法，其特征在于，所述对所述初始信道集合中的所有信道进行初始空闲信道评估CCA检测，包括：
    采用增强分布式信道访问EDCA机制对所述初始信道集合中的所有信道进行初始CCA检测；
    在所述确定初始信道集合之前，所述方法还包括：
    根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定所述至少一个初始数据中的目标数据，初始数据的优先级为：所述EDCA机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级，或者分布式协调功能DCF机制中优先级。
  3. 根据权利要求1所述的方法，其特征在于，
    所述对所述初始信道集合中的所有信道进行初始空闲信道评估CCA检测，包括：
    对所述初始信道集合中的所有信道进行第一CCA检测，若在所述第一CCA检测过程中的某一时刻所述第一CCA检测结果为忙碌，则停止所述第一CCA检测，并反复对所述初始信道集合进行第二CCA检测，直至所述第二CCA检测结果为空闲，再继续所述第一CCA检测，直至所述第一CCA检测结束；
    所述确定所述初始信道集合中的初始CCA检测结果为空闲的信道为目标信道，包括：
    将所述第一CCA检测结束前的预设时间段内，所述初始信道集合中的第一CCA检测结果为空闲的信道确定为目标信道；
    在所述确定初始信道集合之前，所述方法还包括：
    根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定所述至少一个初始数据中的目标数据，初始数据的优先级为：先听后讲LBT机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级。
  4. 根据权利要求3所述的方法，其特征在于，所述反复对所述初始信道集合进行第二CCA检测，直至所述第二CCA检测结果为空闲，再继续所述第一CCA检测，包括：
    反复对所述初始信道集合中的所有信道进行第二CCA检测，直至所述初始信道集合中的所有信道的第二CCA检测结果为空闲，再继续所述第一CCA检测。
  5. 根据权利要求3所述的方法，其特征在于，所述初始信道集合包括至少两个信道， 所述反复对所述初始信道集合进行第二CCA检测，直至所述第二CCA检测结果为空闲，再继续所述第一CCA检测，包括：
    采用二分法得到所述初始信道集合的第一子集；
    对所述第一子集进行第二CCA检测；
    若所述第一子集的第二CCA检测结果为空闲，则继续所述第一CCA检测；
    若所述第一子集的第二CCA检测结果为忙碌，则采用二分法得到所述第一子集的第二子集；
    对所述第二子集进行第二CCA检测；
    若所述第二子集的第二CCA检测结果为空闲，则继续所述第一CCA检测；
    若所述第二子集的第二CCA检测结果为忙碌，则判断所述第二子集是否由所述初始信道集合的一个信道组成；
    若所述第二子集由所述初始信道集合的一个信道组成，则反复对所述第二子集进行第二CCA检测，直至所述第二子集的第二CCA检测结果为空闲，再继续所述第一CCA检测。
  6. 根据权利要求3所述的方法，其特征在于，在所述对所述初始信道集合中的所有信道进行第一CCA检测之前，所述方法还包括：
    确定所述初始信道集合中信道的个数；
    根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限，所述第一门限确定公式为：Y＝X+3*log2M，其中，所述Y为所述第一门限，所述X为带宽为20MHz的信道对应的门限，log2M为以2为底M的对数，所述M为参与CCA检测的信道的个数；
    所述对所述初始信道集合中的所有信道进行第一CCA检测，包括：
    采用所述第一门限对所述初始信道集合中的所有信道进行所述第一CCA检测。
  7. 根据权利要求6所述的方法，其特征在于，在所述根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限之前，所述方法还包括：
    检测预设范围内是否存在异系统设备，所述预设范围内的设备与所述通信设备的距离小于预设距离；
    若所述预设范围内存在所述异系统设备，则根据所述初始信道集合中信道的个数以及第二门限确定公式确定第二门限，所述第二门限确定公式为：
    Figure PCTCN2017090045-appb-100001
    所述对所述初始信道集合中的所有信道进行第一CCA检测，包括：
    采用所述第二门限对所述初始信道集合中的所有信道进行第一CCA检测；
    所述根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限，包括：
    若所述预设范围内不存在所述异系统设备，则根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限；
    其中，XThresh_max为所述第二门限，
    Figure PCTCN2017090045-appb-100002
    为Tmax+10-3*log2(M)-∑I与Xr中的最小值，Tmax＝-75+10*log10BW，log10BW为以 10为底BW的对数，BW为所述初始信道集合对应的频带宽度，dB为分贝，I为异系统设备的干扰值，∑I为所述预设范围内的所有异系统设备的干扰值之和，Xr为最大允许发射门限。
  8. 一种数据传输装置，其特征在于，用于通信设备，所述数据传输装置包括：
    第一确定模块，用于确定初始信道集合，所述初始信道集合包括所述通信设备当前可接入的所有信道；
    第一检测模块，用于对所述初始信道集合中的所有信道进行初始空闲信道评估CCA检测；
    第二确定模块，用于确定所述初始信道集合中的初始CCA检测结果为空闲的信道为目标信道；
    第二检测模块，用于对预设信道进行辅助CCA检测，所述初始信道集合中的每个信道均为所述预设信道的子信道；
    传输模块，用于在所述辅助CCA检测结果为空闲时，在所述目标信道上进行目标数据的传输。
  9. 根据权利要求8所述的数据传输装置，其特征在于，所述第一检测模块还用于：
    采用增强分布式信道访问EDCA机制对所述初始信道集合中的所有信道进行初始CCA检测；
    所述数据传输装置还包括：
    第三确定模块，用于根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定所述至少一个初始数据中的目标数据，初始数据的优先级为：所述EDCA机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级，或者分布式协调功能DCF机制中优先级。
  10. 根据权利要求8所述的数据传输装置，其特征在于，
    所述第一检测模块还用于：
    对所述初始信道集合中的所有信道进行第一CCA检测，若在所述第一CCA检测过程中的某一时刻所述第一CCA检测结果为忙碌，则停止所述第一CCA检测，并反复对所述初始信道集合进行第二CCA检测，直至所述第二CCA检测结果为空闲，再继续所述第一CCA检测，直至所述第一CCA检测结束；
    所述第二确定模块还用于：
    将所述第一CCA检测结束前的预设时间段内，所述初始信道集合中的第一CCA检测结果为空闲的信道确定为目标信道；
    所述数据传输装置还包括：
    第四确定模块，用于根据待传输的至少一个初始数据中每个初始数据对应的优先级，确定所述至少一个初始数据中的目标数据，初始数据的优先级为：先听后讲LBT机制中的第一优先级、第二优先级、第三优先级和第四优先级中的一个优先级。
  11. 根据权利要求10所述的数据传输装置，其特征在于，所述第一检测模块还用于：
    反复对所述初始信道集合中的所有信道进行第二CCA检测，直至所述初始信道集合中的所有信道的第二CCA检测结果为空闲，再继续所述第一CCA检测。
  12. 根据权利要求10所述的数据传输装置，其特征在于，所述初始信道集合包括至少两个信道，所述第一检测模块还用于：
    采用二分法得到所述初始信道集合的第一子集；
    对所述第一子集进行第二CCA检测；
    若所述第一子集的第二CCA检测结果为空闲，则继续所述第一CCA检测；
    若所述第一子集的第二CCA检测结果为忙碌，则采用二分法得到所述第一子集的第二子集；
    对所述第二子集进行第二CCA检测；
    若所述第二子集的第二CCA检测结果为空闲，则继续所述第一CCA检测；
    若所述第二子集的第二CCA检测结果为忙碌，则判断所述第二子集是否由所述初始信道集合的一个信道组成；
    若所述第二子集由所述初始信道集合的一个信道组成，则反复对所述第二子集进行第二CCA检测，直至所述第二子集的第二CCA检测结果为空闲，再继续所述第一CCA检测。
  13. 根据权利要求10所述的数据传输装置，其特征在于，所述数据传输装置还包括：
    第五确定模块，用于确定所述初始信道集合中信道的个数；
    第六确定模块，用于根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限，所述第一门限确定公式为：Y＝X+3*log2M，其中，所述Y为所述第一门限，所述X为带宽为20MHz的信道对应的门限，log2M为以2为底M的对数，所述M为参与CCA检测的信道的个数；
    所述第一检测模块还用于：
    采用所述第一门限对所述初始信道集合中的所有信道进行所述第一CCA检测。
  14. 根据权利要求13所述的数据传输装置，其特征在于，所述数据传输装置还包括：
    第三检测模块，用于检测预设范围内是否存在异系统设备，所述预设范围内的设备与所述通信设备的距离小于预设距离；
    第七确定模块，用于在所述预设范围内存在所述异系统设备时，根据所述初始信道集合中信道的个数以及第二门限确定公式确定第二门限，所述第二门限确定公式为：
    Figure PCTCN2017090045-appb-100003
    所述第一检测模块还用于：
    采用所述第二门限对所述初始信道集合中的所有信道进行第一CCA检测；
    所述第六确定模块还用于：
    在所述预设范围内不存在所述异系统设备时，根据所述初始信道集合中信道的个数以及第一门限确定公式确定第一门限；
    其中，XThresh_max为所述第二门限，
    Figure PCTCN2017090045-appb-100004
    为Tmax+10-3*log2(M)-∑I与Xr中的最小值，Tmax＝-75+10*log10BW，log10BW为以10为底BW的对数，BW为所述初始信道集合对应的频带宽度，dB为分贝，I为异系统设备的干扰值，∑I为所述预设范围内的所有异系统设备的干扰值之和，Xr为最大允许发射门限。
  15. 一种数据传输系统，其特征在于，所述数据传输系统包括通信设备，所述通信设备包括权利要求8至14任一所述的数据传输装置。
  16. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有指令，当所述计算机可读存储介质在计算机上运行时，使得计算机执行权利要求1至7任一所述的方法。
  17. 一种包含指令的计算机程序产品，其特征在于，当所述计算机程序产品在计算机上运行时，使得计算机执行权利要求1至7任一所述的方法。
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