WO2020232699A1 - 数据传输方法、装置、设备及存储介质 - Google Patents

数据传输方法、装置、设备及存储介质 Download PDF

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Publication number
WO2020232699A1
WO2020232699A1 PCT/CN2019/088135 CN2019088135W WO2020232699A1 WO 2020232699 A1 WO2020232699 A1 WO 2020232699A1 CN 2019088135 W CN2019088135 W CN 2019088135W WO 2020232699 A1 WO2020232699 A1 WO 2020232699A1
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Prior art keywords
frequency bands
data
frame
channel
message frame
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PCT/CN2019/088135
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English (en)
French (fr)
Inventor
董贤东
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to US17/612,922 priority Critical patent/US20220231824A1/en
Priority to PCT/CN2019/088135 priority patent/WO2020232699A1/zh
Priority to EP19929719.3A priority patent/EP3975657A4/en
Priority to CN201980000906.4A priority patent/CN112292907B/zh
Publication of WO2020232699A1 publication Critical patent/WO2020232699A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • 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 disclosure relates to the field of communications, in particular to a data transmission method, device, equipment and storage medium
  • wireless fidelity Wireless Fidelity, Wi-Fi
  • the scope of research includes: 320MHz bandwidth transmission, aggregation and coordinated transmission of multiple frequency bands, etc.
  • the proposed vision is relative to existing electrical and electronic engineers
  • the Institute of Electrical and Electronics Engineers (IEEE) 802.11ax increases the speed and throughput by at least four times.
  • the main application scenarios include video transmission, augmented reality (Augmented Reality, AR), virtual reality (Virtual Reality, VR), etc.
  • the aggregation and coordinated transmission of multiple frequency bands refers to the simultaneous communication between devices in the 2.4 GHz, 5.8 GHz, and 6-7 GHz frequency bands.
  • multiple frequency bands can also include millimeter wave frequency bands, such as 45 GHz and 60 GHz.
  • the embodiments of the present disclosure provide a data transmission method, device, equipment, and storage medium, which can be used to solve the problem of how to perform data transmission in multiple frequency bands.
  • the technical solution is as follows:
  • a data transmission method including:
  • the multi-band transmission connection establishment message frame includes:
  • the initial multi-band transmission request message frame (initial Multi-band TX MS1);
  • M-RTS Multi-band Request To Send
  • the sending the multi-band transmission connection establishment message frame in the at least two frequency bands includes:
  • the sending the data frame in all or part of the at least two frequency bands includes:
  • the sending the multi-band transmission connection establishment message frame in the at least two frequency bands includes:
  • the sending the data frame in all or part of the at least two frequency bands includes:
  • the sending the data frame on the second channel includes:
  • the data frame with the smallest frame number among the multiple data frames that have not been sent is sent on the second channel.
  • the sending the multi-band transmission connection establishment message frame in the at least two frequency bands includes:
  • the multi-band transmission connection establishment message frame is sent again in the at least two frequency bands.
  • the determining the backoff duration includes:
  • a random back-off mechanism is adopted to determine the back-off duration.
  • the determining the backoff duration includes:
  • n is an integer greater than 1;
  • the sending time of the multi-band transmission connection establishment message frame in the at least two frequency bands is synchronized.
  • a data transmission method including:
  • the receiving the data frame in all or part of the at least two frequency bands includes:
  • the data frame is sent when the at least two frequency bands are in an idle state.
  • the receiving the data frame in all or part of the at least two frequency bands includes:
  • the data frame is received on a second channel in the at least two frequency bands, where the second channel is a channel in an idle state in the at least two frequency bands.
  • a data transmission device including:
  • a processing module configured to generate a multi-frequency band transmission connection establishment message frame, where the multi-frequency band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands;
  • a sending module configured to send the multi-band transmission connection establishment message frame in the at least two frequency bands
  • the sending module is configured to send the data frame in all or part of the at least two frequency bands.
  • the multi-band transmission connection establishment message frame includes:
  • the initial multi-band transmission request message frame (initial Multi-band TX MS1);
  • M-RTS Multi-band Request To Send
  • the sending module is configured to sense the status of each channel in the at least two frequency bands; when the at least two frequency bands are in an idle state, in the at least two frequency bands Sending the multi-band transmission connection establishment message frame; the sending module is configured to send the same data frame; or, sending different data frames in the at least two frequency bands, and the different data frames are Obtained after the data to be sent is divided into blocks.
  • the sending module is configured to perceive the status of each channel in the at least two frequency bands; when there is a first channel in the at least two frequency bands, it is in a busy state and a second channel exists When it is in an idle state, sending the multi-band transmission connection establishment message frame on the second channel;
  • the sending module is configured to send the data frame on the second channel.
  • the sending module is configured to send the data frame on the second channel when the at least two frequency bands are used to send the same data frame; when the at least two frequency bands are used to send the same data frame; When the two frequency bands are used to send different data frames, the data frame with the smallest frame number among the multiple data frames that have not been sent is sent on the second channel.
  • the sending module is configured to perceive the channel status in the at least two frequency bands; the processing module is configured to be busy when a third channel exists in the at least two frequency bands In the state, the back-off duration is determined; the sending module is configured to send the multi-band transmission connection establishment message frame again in the at least two frequency bands after waiting for the back-off duration.
  • the sending module is configured to adopt a random back-off mechanism to determine the back-off duration.
  • the sending module is configured to use a random back-off mechanism for each third channel when there are n third channels to determine the corresponding back-off duration, and n is greater than 1. Integer of; determining the minimum back-off duration among the n back-off durations as the back-off duration.
  • the sending module is configured to synchronize the sending time of the multi-band transmission connection establishment message frame on the at least two frequency bands.
  • a data transmission device including:
  • a receiving module configured to receive a multi-band transmission connection establishment message frame in at least two frequency bands, where the multi-frequency band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands;
  • the receiving module is configured to receive the data frame in all or part of the at least two frequency bands.
  • the receiving module is configured to receive the same data frame in the at least two frequency bands; or, the receiving module is configured to be in the at least two frequency bands Receiving different said data frames, the different said data frames are obtained by dividing the data to be sent into blocks;
  • the data frame is sent when the at least two frequency bands are in an idle state.
  • the receiving module is configured to receive data frames on a second channel in the at least two frequency bands, and the second channel is in an idle state in the at least two frequency bands channel.
  • a wireless communication device including:
  • a transceiver connected to the processor
  • a memory for storing processor executable instructions
  • the processor is configured to load and execute the executable instructions to implement the data transmission method provided in the above aspect.
  • a wireless communication device including:
  • a transceiver connected to the processor
  • a memory for storing processor executable instructions
  • the processor is configured to load and execute the executable instructions to implement the data transmission method provided in the above aspect.
  • a computer-readable storage medium stores at least one instruction, at least one program, code set or instruction set, the at least one instruction, the at least A section of the program, the code set or the instruction set is loaded and executed by the processor to implement the data transmission method described in the above aspect.
  • the multi-band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands, and send a multi-band transmission connection establishment message frame, and then in at least two frequency bands Data frames are sent in all or part of the frequency bands, which realizes simultaneous data transmission on multiple frequency bands and provides greater transmission rate and throughput.
  • Fig. 1 is a block diagram of a communication system provided by an exemplary embodiment of the present disclosure
  • Fig. 2 is a flowchart of a data transmission method provided by an exemplary embodiment of the present disclosure
  • Fig. 3 is a flowchart of a data transmission method provided by an exemplary embodiment of the present disclosure
  • FIG. 4 is a flowchart of a data transmission method provided by another exemplary embodiment of the present disclosure.
  • FIG. 5 is a flowchart of a data transmission method provided by another exemplary embodiment of the present disclosure.
  • Fig. 6 is a flowchart of a data transmission method provided by another exemplary embodiment of the present disclosure.
  • FIG. 7 is a flowchart of a random backoff mechanism in multiple frequency bands provided by another exemplary embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a data transmission method provided by another exemplary embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a data transmission device provided by an exemplary embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a data transmission device according to another exemplary embodiment of the present disclosure.
  • Fig. 11 is a schematic structural diagram of a wireless communication device provided by another exemplary embodiment of the present disclosure.
  • Fig. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present disclosure.
  • the communication system includes: a wireless access point (Access Point, AP) 120 and a station (Station) 140.
  • AP Access Point
  • Station station
  • the wireless access point 120 is used to provide wireless access functions.
  • the wireless access point 120 may be a wireless router, a base station with Wi-Fi function, or the like.
  • One wireless access point 120 can access multiple sites 140.
  • the station 140 accesses the wireless access point 120.
  • the site 140 may be a mobile phone, a tablet, a laptop, an e-book, an industrial machine, or other equipment.
  • the above-mentioned communication system may be Institute of Electrical and Electronics Engineers (IEEE) 802.11a/b/g/n/ac/ax/be.
  • IEEE Institute of Electrical and Electronics Engineers
  • the above-mentioned communication system is IEEE802.11be as an example.
  • the above communication system includes two networking forms:
  • the basic wireless network (Infra) based on the AP 120 also known as the basic network, is a wireless network created by the AP 120 and connected by many STAs 140.
  • the characteristics of this type of network are: AP 120 is the center of the entire network, and all communications in the network are forwarded through AP 120.
  • the first device in the present disclosure may be one of the wireless access point 120 and the station 140, and the second device may be the other of the wireless access point 120 and the station 140.
  • a wireless network based on an ad hoc network also called an ad hoc network, is a network composed of only two or more STAs 140 themselves, and there is no AP 120 in the network. This type of network is a loose structure, and all STAs 140 in the network can communicate directly.
  • the first device in the present disclosure may be the first site 140, and the second device may be the second site 140.
  • the RTS/CTS handshake mechanism has been widely used to solve the problem of hidden terminals in wireless networks.
  • the RTS/CTS handshake mechanism stipulates that the first device must send an RTS request frame to the second device before officially sending a data packet to the adjacent second device; after the second device receives the RTS, If the second device thinks that there is no hidden terminal around it, the second device will return a CTS reply frame to the first device; otherwise, the second device will not make any response; only after receiving the CTS reply frame returned by the second device, the first device can Send a data frame (DATA) to the second device; and the second device needs to send a reply confirmation frame (ACK) to the first device after receiving the data frame from the first device.
  • DATA data frame
  • ACK reply confirmation frame
  • Fig. 2 shows a flowchart of a data transmission method provided by an exemplary embodiment of the present disclosure. This method can be executed by the communication system shown in FIG. 1. The method includes:
  • Step 201 The first device generates a multi-band transmission connection establishment message frame, and the multi-band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands;
  • the multi-band transmission connection establishment message frame is realized by using a management message frame or a control message frame.
  • the management message frame can be an initial Multi-band TX MS1; when a control message frame is adopted, the control message frame can be a multi-band request to send message frame ( M-RTS).
  • M-RTS multi-band request to send message frame
  • Step 202 The first device sends a multi-band transmission connection establishment message frame in at least two frequency bands;
  • the at least two frequency bands include: at least two of the 2.4 GHz frequency band, the 5.8 GHz frequency band, and the 6-7 GHz frequency band.
  • the at least two frequency bands also include other communication frequency bands supported by the Wi-Fi protocol, such as millimeter wave frequency bands, such as the 45 GHz frequency band and the 60 GHz frequency band.
  • millimeter wave frequency bands such as the 45 GHz frequency band and the 60 GHz frequency band.
  • at least two frequency bands including a 2.4 GHz frequency band, a 5.8 GHz frequency band, and a 6-7 GHz frequency band are used as examples for illustration, but this is not limited.
  • the first device simultaneously sends a multi-band transmission connection establishment message frame in at least two frequency bands.
  • Step 203 The second device receives a multi-band transmission connection establishment message frame in at least two frequency bands;
  • the second device also replies to the first device in at least two frequency bands with a Multi-band Clear To send (M-CTS) message frame, and the first device receives the second device in the at least two frequency bands.
  • M-CTS Multi-band Clear To send
  • Step 204 The first device sends the data frame in all or part of the at least two frequency bands;
  • Step 205 The second device receives the data frame in all or part of the at least two frequency bands.
  • the method provided in this embodiment generates a multi-band transmission connection establishment message frame.
  • the multi-band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands.
  • the connection establishment message frame, and then the data frame is sent in all or part of the at least two frequency bands, which realizes simultaneous data transmission on multiple frequency bands, and achieves a greater transmission rate and throughput.
  • the steps executed by the first device can be individually implemented as the data transmission method on the first device side
  • the steps executed by the second device can be individually implemented as the data transmission method on the second device side.
  • the first device and the second device both supporting data transmission on all candidate frequency bands (such as the 2.4GHz frequency band, the 5.8GHz frequency band and the 6-7GHz frequency band) for data transmission, and the three frequency bands are in the channel idle state as an example.
  • candidate frequency bands such as the 2.4GHz frequency band, the 5.8GHz frequency band and the 6-7GHz frequency band
  • the present disclosure provides the following embodiments.
  • Fig. 3 shows a flowchart of a data transmission method provided by another exemplary embodiment of the present disclosure. This method can be executed by the communication system shown in FIG. 1. The method includes:
  • Step 301 The first device generates a multi-band transmission connection establishment message frame, and the multi-band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands;
  • the multi-band transmission connection establishment message frame is realized by using a management message frame or a control message frame.
  • the management message frame may be an initial Multi-band TX MS1; when a control message frame is adopted, the control message frame may be a multi-band request message frame ( M-RTS).
  • M-RTS multi-band request message frame
  • Step 302 The first device senses the state of each channel in at least two frequency bands
  • the first device uses Clear Channel Assessment (CCA) to perceive the status of each channel in at least two frequency bands.
  • CCA Clear Channel Assessment
  • the energy detection (ED) mechanism is adopted at the physical layer to sense the signal strength on channels in multiple frequency bands; if the perceived signal strength exceeds the threshold, the channel status is judged to be busy; if the perceived signal strength Below the threshold, it is judged that the channel status is idle.
  • the CCA mechanism adopted in this embodiment is consistent with the CCA mechanism in IEEE 802.11a/b/g/n/ac/ax.
  • Step 303 When at least two frequency bands are in an idle state, the first device sends a multi-frequency band transmission connection establishment message frame in at least two frequency bands;
  • Step 304 The second device receives a multi-band transmission connection establishment message frame in at least two frequency bands;
  • Step 305 The second device sends a multi-band transmission connection response message frame in at least two frequency bands;
  • the multi-band transmission connection response message frame is realized by using a management message frame or a control message frame.
  • the second device determines that the data receiving condition is met (for example, there is no conflicting transmission of hidden nodes)
  • the second device replies with a multi-band transmission connection response message frame in at least two frequency bands.
  • the management message frame can be the initial Multi-band TX MS2; when the control message frame is adopted, the control message frame can be the multi-band clear to send message frame ( M-CTS).
  • M-CTS multi-band clear to send message frame
  • Step 306 The first device receives a multi-band transmission connection response message frame in at least two frequency bands;
  • Step 307 The first device sends the same data frame in at least two frequency bands; or, sends different data frames in at least two frequency bands;
  • the data in different data frames refers to the upper-layer data.
  • the upper-layer data can be divided into blocks through the MAC (Media Access Control) layer inside the device. For example, 100M bytes of data are divided into three blocks and numbered Block1. After Block2 and Block3 are three different data frames, they are transmitted in the frequency bands of 2.4GHz, 5.8GHz and 6-7GHz respectively; or, the data is divided into blocks and numbered on the MAC layer inside the device, and transmitted to The MAC layer, the MAC layer repackages the data to obtain three different data frames, and transmits them in the frequency bands of 2.4GHz, 5.8GHz and 6-7GHz respectively.
  • MAC Media Access Control
  • the data in the same data frame also refers to the upper-layer data, which can be processed by the MAC layer inside the device to be differently identified for transmission in different frequency bands.
  • identification 1 indicates that the data is transmitted in the 2.4GHz frequency band
  • identification 2 indicates that the data is in Transmission is carried out in the 5.8GHz frequency band
  • Mark 3 indicates that the data is transmitted in the 6-7GHz frequency band; or through upper layer processing, it is transparently transmitted to the MAC layer.
  • the data After being encapsulated into a data frame by the MAC layer, the data is transmitted at 2.4GHz, 5.8GHz and 6- Transmission is carried out in the 7GHz frequency band.
  • the first device after receiving the multi-band transmission connection response message frame, the first device simultaneously transmits the same data frame on at least two frequency bands; or, simultaneously transmits different data frames in at least two frequency bands.
  • Step 308 The second device receives the same data frame in at least two frequency bands; or, receives different data frames in at least two frequency bands.
  • data frame 1 is sent on frequency band A
  • data frame 2 is sent on frequency band B
  • data frame 3 is sent on frequency band C
  • data frame 4 is sent on frequency band A
  • data is sent on frequency band B
  • data is sent on frequency band B
  • data frame 7 is sent on frequency band A
  • data frame 8 is sent on frequency band B
  • data frame 9 is sent on frequency band C.
  • the method provided in this embodiment generates a multi-band transmission connection establishment message frame.
  • the multi-band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands.
  • the connection establishment message frame, and then the data frame is sent in all or part of the at least two frequency bands, which realizes simultaneous data transmission on multiple frequency bands, and achieves a greater transmission rate and throughput.
  • the second device when the first device sends the same data frame on at least two frequency bands, the second device can simultaneously receive the same data frame on at least two frequency bands, thereby receiving the same data frame. Multiple copies to improve decoding accuracy.
  • the second device when the first device sends different data frames on at least two frequency bands, the second device can receive different data frames on at least two frequency bands, thereby achieving a greater transmission rate and Throughput.
  • the embodiments of the present disclosure provide the following two embodiments.
  • Fig. 4 shows a flowchart of a data transmission method provided by another exemplary embodiment of the present disclosure. This method can be executed by the communication system shown in FIG. 1. The method includes:
  • Step 401 The first device generates a multi-band transmission connection establishment message frame, and the multi-band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands;
  • the multi-band transmission connection establishment message frame is realized by using a management message frame or a control message frame.
  • the management message frame may be an initial Multi-band TX MS1; when a control message frame is adopted, the control message frame may be a multi-band request message frame ( M-RTS).
  • M-RTS multi-band request message frame
  • Step 402 The first device perceives the state of each channel in at least two frequency bands
  • the first device uses Clear Channel Assessment (CCA) to perceive the status of each channel in at least two frequency bands.
  • CCA Clear Channel Assessment
  • the energy detection (ED) mechanism is adopted at the physical layer to sense the signal strength on channels in multiple frequency bands; if the sensed signal strength exceeds the threshold, the channel status is judged to be busy; if the sensed signal strength Below the threshold, it is judged that the channel status is idle.
  • the CCA mechanism adopted in this embodiment is consistent with the CCA mechanism in IEEE 802.11a/b/g/n/ac/ax.
  • Step 403 The first device sends a multi-band transmission connection establishment message frame on the second channel when the first channel is in a busy state and the second channel is in an idle state in at least two frequency bands;
  • the multi-band transmission connection establishment message frame can be regarded as a single-band transmission connection establishment message frame; when the second channel is more than two channels, the first device is simultaneously on at least two second channels Multi-band transmission connection establishment message frame is sent on.
  • the multi-band transmission connection establishment message frame is realized by using a management message frame or a control message frame.
  • the management message frame can be an initial Multi-band TX MS1; when a control message frame is adopted, the control message frame can be a multi-band request to send message. Frame (M-RTS).
  • M-RTS Multi-band request to send message. Frame
  • Step 404 The second device receives the multi-band transmission connection establishment message frame on the second channel.
  • Step 405 The second device replies with a multi-band transmission connection response message frame on the second channel.
  • the multi-band transmission connection response message frame is realized by using a management message frame or a control message frame.
  • the second device determines that the data receiving condition is met (for example, there is no conflicting transmission of hidden nodes)
  • the second device replies with a multi-band transmission connection response message frame in at least two frequency bands.
  • the management message frame can be the initial Multi-band TX MS2; when the control message frame is adopted, the control message frame can be the multi-band clear to send message frame ( M-CTS).
  • M-CTS multi-band clear to send message frame
  • the multi-band transmission connection response message frame can be regarded as a single-band transmission connection response message frame.
  • Step 406 The first device sends the data frame on the second channel.
  • the first device sends data frames on the second channel; when the second channel is a single channel and at least two frequency bands are used to send different
  • the data frame with the smallest frame number among the multiple data frames that have not been sent is sent on the second channel.
  • different data frames are obtained after the data to be sent is divided into blocks.
  • the first device When the second channel is at least two channels and at least two frequency bands are used to send the same data frame, the first device sends the same data frame on at least two second channels; when the second channel is at least two channels and When at least two frequency bands are used to send different data frames, the first device sends different data frames on at least two second channels.
  • different data frames are obtained after the data to be sent is divided into blocks.
  • the data in different data frames refers to the upper layer data.
  • the upper layer data can be divided into blocks through the MAC (Media Access Control) layer.
  • 100M bytes of data can be divided into three blocks and numbered Block1, Block2, and Block3 into three different data frames.
  • the MAC layer repackages the data to obtain three After different data frames, they are transmitted in the frequency bands of 2.4 GHz, 5.8 GHz and 6-7 GHz.
  • the data in the same data frame also refers to the upper-layer data, which can be processed by the MAC layer inside the device to be differently identified for transmission in different frequency bands.
  • identification 1 indicates that the data is transmitted in the 2.4GHz frequency band
  • identification 2 indicates that the data is in Transmission is carried out in the 5.8GHz frequency band
  • Mark 3 indicates that the data is transmitted in the 6-7GHz frequency band; or through upper layer processing, it is transparently transmitted to the MAC layer.
  • the data After being encapsulated into a data frame by the MAC layer, the data is transmitted at 2.4GHz, 5.8GHz and 6- Transmission is carried out in the 7GHz frequency band.
  • the first device sends the data frame on the second channel after receiving the multi-band transmission connection response message frame.
  • Step 407 The second device receives the data frame on the second channel.
  • frequency band A when at least two frequency bands include: frequency band A, frequency band B, and frequency band C, if frequency band A is busy and frequency bands B and C are idle, the first device uses frequency band B and frequency band C to send to the second device Send data frame.
  • the method provided in this embodiment ensures that data frames are sent on the second channel first when the first channel in at least two frequency bands is busy and the second channel is idle. Timeliness of delivery.
  • Fig. 5 shows a flowchart of a data transmission method provided by another exemplary embodiment of the present disclosure. This method can be executed by the communication system shown in FIG. 1. The method includes:
  • Step 501 The first device generates a multi-band transmission connection establishment message frame, and the multi-band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands;
  • the multi-band transmission connection establishment message frame is realized by using a management message frame or a control message frame.
  • the management message frame can be an initial Multi-band TX MS1; when a control message frame is adopted, the control message frame can be a multi-band request to send message. Frame (M-RTS).
  • M-RTS Multi-band request to send message. Frame
  • Step 502 The first device senses the state of each channel in at least two frequency bands
  • the first device uses Clear Channel Assessment (CCA) to perceive the status of each channel in at least two frequency bands.
  • CCA Clear Channel Assessment
  • the energy detection (ED) mechanism is adopted at the physical layer to sense the signal strength on channels in multiple frequency bands; if the sensed signal strength exceeds the threshold, the channel status is judged to be busy; if the sensed signal strength Below the threshold, it is judged that the channel status is idle.
  • the CCA mechanism adopted in this embodiment is consistent with the CCA mechanism in IEEE 802.11a/b/g/n/ac/ax.
  • Step 503 The first device determines the backoff time when the third channel is busy in at least two frequency bands;
  • the first device uses a random back-off mechanism to determine the back-off duration.
  • the first device adopts a random backoff mechanism for each third channel to determine the corresponding backoff duration, where n is an integer greater than 1, and the minimum backoff duration among the n backoff durations , Determine the backoff time for this use.
  • Step 504 After waiting for the backoff time, the first device sends a multi-band transmission connection establishment message frame in at least two frequency bands;
  • the first device perceives the state of each channel in at least two frequency bands again; when the state of each channel in at least two frequency bands is in an idle state, the first device The multi-band transmission connection establishment message frame is sent in the frequency band, and step 505 is entered; when the status of each channel in at least two frequency bands exists that the third channel is busy, step 503 is performed again.
  • Step 505 The second device receives a multi-band transmission connection establishment message frame in at least two frequency bands;
  • Step 506 The second device replies with a multi-band transmission connection response message frame in at least two frequency bands;
  • the multi-band transmission connection response message frame is realized by using a management message frame or a control message frame.
  • the second device determines that the data receiving condition is met (for example, there is no conflicting transmission of hidden nodes)
  • the second device replies with a multi-band transmission connection response message frame in at least two frequency bands.
  • the management message frame can be the initial Multi-band TX MS2; when the control message frame is adopted, the control message frame can be the multi-band clear to send message frame ( M-CTS).
  • M-CTS multi-band clear to send message frame
  • Step 507 The first device sends the same data frame in at least two frequency bands; or, sends different data frames in at least two frequency bands;
  • the first device after receiving the multi-band transmission connection response message frame, the first device simultaneously sends the same data frame in at least two frequency bands; or, simultaneously sends different data frames in at least two frequency bands.
  • different data frames are obtained after the data to be sent is divided into blocks.
  • the data in different data frames refers to the upper layer data.
  • the upper layer data can be divided into blocks through the MAC (Media Access Control) layer.
  • 100M bytes of data can be divided into three blocks and numbered Block1, Block2, and Block3 into three different data frames.
  • the MAC layer repackages the data to obtain three After different data frames, they are transmitted in the frequency bands of 2.4 GHz, 5.8 GHz and 6-7 GHz.
  • the data in the same data frame also refers to the upper-layer data, which can be processed by the MAC layer inside the device to be differently identified for transmission in different frequency bands.
  • identification 1 indicates that the data is transmitted in the 2.4GHz frequency band
  • identification 2 indicates that the data is in Transmission is carried out in the 5.8GHz frequency band
  • Mark 3 indicates that the data is transmitted in the 6-7GHz frequency band; or through upper layer processing, it is transparently transmitted to the MAC layer.
  • the data After being encapsulated into a data frame by the MAC layer, the data is transmitted at 2.4GHz, 5.8GHz and 6- Transmission is carried out in the 7GHz frequency band.
  • Step 508 The second device receives the same data frame in at least two frequency bands; or, receives different data frames in at least two frequency bands.
  • the method provided in this embodiment regains data transmission opportunities by adopting a random backoff mechanism in multi-frequency bands when the channel is busy during transmission in multiple frequency bands, thereby providing another option for busy channels.
  • Data transmission mode can achieve greater transmission rate and throughput.
  • both the first device and the second device support simultaneous transmission of data frames in the 2.4GHz, 5.8GHz, and 6-7GHz frequency bands.
  • CCA is performed before the message frame.
  • the random backoff mechanism is used to determine the backoff time.
  • the 2.4GHz frequency band, 5.8 Multi-band transmission establishment message frames are sent on three frequency bands in the GHz band and the 6-7 GHz band.
  • the sending time of the multi-band transmission connection establishment message frame in at least two frequency bands is synchronized, and the sending time of the multi-band transmission connection response message frame in at least two frequency bands is synchronized, as shown in FIG. 7.
  • the interval between the multi-band transmission connection establishment message frame and the multi-band transmission connection response message frame is a short inter-frame space (SIFS).
  • SIFS short inter-frame space
  • Step 801 The first device generates a first message frame, the first message frame carries first capability information, and the first capability information is used to indicate that the first device supports simultaneous data transmission on at least two frequency bands;
  • the at least two frequency bands include: at least two of the 2.4 GHz frequency band, the 5.8 GHz frequency band, and the 6-7 GHz frequency band.
  • the at least two frequency bands also include other communication frequency bands supported by the Wi-Fi protocol.
  • the 2.4 GHz frequency band is referred to as frequency band A
  • the 5.8 GHz frequency band is referred to as frequency band B
  • the 6-7 GHz frequency band is referred to as frequency band C.
  • the first message frame is a multi-band negotiation request frame (Multi-band operation Request).
  • the first device generates the first message frame when there is a large amount of data to be sent.
  • Step 802 The first device sends a first message frame
  • the first device sends the first message frame on a single frequency band.
  • the single frequency band may be a first frequency band, and the single frequency band is a frequency band to which the first device and the second device have been associated.
  • Step 803 The second device receives a first message frame, where the first message frame carries first capability information, and the first capability information is used to indicate that the first device supports simultaneous data transmission on at least two frequency bands;
  • the second device receives the first message frame on a single frequency band. For example, the second device receives the first message frame on the first frequency band.
  • Step 804 The second device generates a second message frame, the second message frame carries second capability information, and the second capability information is used to indicate that the second device supports simultaneous data transmission on at least two frequency bands.
  • the second message frame is a multi-band negotiation response frame (Multi-band Operation Response).
  • Step 805 The second device sends a second message frame.
  • the second device sends the second message frame on a single frequency band, and the single frequency band may be the first frequency band.
  • Step 806 The first device receives a second message frame, where the second message frame carries second capability information, and the second capability information is used to indicate that the second device supports simultaneous data transmission on at least two frequency bands;
  • the first device receives the second message frame on a single frequency band. For example, the first device receives the second message frame on the first frequency band.
  • Step 807 The first device determines at least two frequency bands according to the first capability information and the second capability information.
  • the first device determines the transmission capabilities supported by the first device and the second device at the same time, that is, at least two frequency bands supported at the same time.
  • the at least two frequency bands include a first frequency band and a second frequency band
  • the first frequency band is a frequency band used to send the first message frame and the second message frame
  • the second frequency band is a frequency band different from the first frequency band
  • Step 208 The second device receives data in at least two frequency bands according to the first capability information and the second capability information.
  • the second device determines the transmission capabilities supported by the first device and the second device at the same time according to the first capability information and the second capability information, that is, at least two frequency bands supported at the same time.
  • the first capability information and the second capability information include the following information items: frequency band identifiers of at least two frequency bands.
  • the first capability information further includes: at least one of working bandwidth supported by the first device, MCS, or key multiplexing information.
  • the second capability information further includes: at least one of working bandwidth supported by the second device, MCS, or key multiplexing confirmation information.
  • the working bandwidth is at least one of a combination of 20MHz, 40MHz, 80MHz, 80+80MHz (discontinuous, non-overlapping)/160MHz (continuous), 160+160MHz (discontinuous, non-overlapping)/320MHz.
  • the key multiplexing information is used to indicate that the existing key (key on the first frequency band) is reused for data encryption.
  • 8 bits are used to represent the frequency band and the working bandwidth.
  • the number of frequency band identifiers is the same as the number of frequency bands. Taking frequency bands including 2.4GHz frequency band, 5.8GHz frequency band and 6-7GHz frequency band as examples, the frequency band identifier occupies the first 3 bits of the 8 bits, and the first bit of the first 3 bits corresponds to the 2.4GHz frequency band and the second The bit corresponds to the 5.8GHz frequency band, and the third bit corresponds to the 6-7GHz frequency band.
  • the value of the first bit When the value of the first bit is 1, it means that the communication in the 2.4GHz frequency band is supported; when the value of the first bit is 0, it means that the communication in the 2.4GHz frequency band is not supported.
  • the value of the second bit When the value of the second bit is 1, it means that the communication in the 5.8GHz frequency band is supported; when the value of the second bit is 0, it means that the communication in the 5.8GHz frequency band is not supported.
  • the value of the third bit When the value of the third bit is 1, it means that the communication in the 6-7GHz frequency band is supported; when the value of the third bit is 0, it means that the communication in the 6-7GHz frequency band is not supported.
  • the last 5 bits of the 8 bits are used to indicate the working bandwidth.
  • the 4th bit corresponds to 20MHz
  • the 5th bit corresponds to 40MHz
  • the 6th bit corresponds to 80MHz
  • the 7th bit corresponds to 80+80MHz (non-continuous, non-overlapping)/160MHz (continuous)
  • the 8th bit corresponds to 160+160MHz ( Discontinuous, non-overlapping)/320MHz.
  • each of the foregoing information items is represented by an information element (Information Element, IE).
  • IE is a part of a frame (such as a management message frame), and its length is variable.
  • the IE includes an Element ID (element identification code) bit, a length (Length) bit, and a content bit of variable length. Among them, the length bit is used to indicate the number of content bits.
  • the aforementioned information items may occupy one IE for each information item, or two or more information items may occupy the same IE.
  • the element identification code of IE can be represented by reserved bits in related technologies, such as 11-15, 43-49, 50-255, etc.
  • the first message frame is a beacon frame (Beacon Frame), and the second message frame is an association request frame (Association Request Frame); or, the first message frame Is a probe request frame (Probe Request Frame), the second message frame is a probe response frame (Probe Response Frame); or, the first message frame is an association request frame (Association Request Frame), the second message frame Is an association response frame (Association Response Frame); or, the first message frame is an authentication request frame (Authentication Request Frame), and the second message frame is an authentication response frame (Authentication Response Frame).
  • Beacon Frame Beacon Frame
  • the second message frame is an association request frame (Association Request Frame)
  • the first message frame Is a probe request frame (Probe Request Frame)
  • the second message frame is a probe response frame (Probe Response Frame)
  • the first message frame is an association request frame (Association Request Frame)
  • the second message frame Is an association response frame (Association Response Frame)
  • the first message frame is an authentication request frame (Authentication Request Frame)
  • the second message frame is an authentication response frame
  • Fig. 9 shows a block diagram of a data transmission device provided by another exemplary embodiment of the present disclosure.
  • the device can be implemented as all or a part of the first device through software, hardware or a combination of both.
  • the device includes:
  • the processing module 920 is configured to generate a multi-band transmission connection establishment message frame, where the multi-band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands;
  • the sending module 940 is configured to send the multi-band transmission connection establishment message frame in the at least two frequency bands;
  • the sending module 940 is configured to send the data frame in all or part of the at least two frequency bands.
  • the processing module 920 may be a hardware device such as a central processing unit or a baseband processor, and is used to implement steps related to calculation, generation, and processing.
  • the sending module 940 may be a hardware device such as a radio frequency antenna, and is used to implement related sending steps.
  • the multi-band transmission connection establishment message frame includes:
  • the initial multi-band transmission request message frame (initial Multi-band TX MS1);
  • M-RTS multi-band request to send message frame
  • the sending module is configured to sense the state of each channel in the at least two frequency bands; when the at least two frequency bands are in an idle state, Sending the multi-band transmission connection establishment message frame in a frequency band;
  • the sending module 940 is configured to send the same data frame; or, send different data frames in the at least two frequency bands, and the different data frames are obtained by dividing the data to be sent into blocks .
  • the sending module 940 is configured to perceive the state of each channel in the at least two frequency bands; when there is a first channel in the at least two frequency bands, it is in a busy state and there is a second frequency band. When the second channel is in an idle state, sending the multi-band transmission connection establishment message frame on the second channel;
  • the sending module 940 is configured to send the data frame on the second channel.
  • the sending module 940 is configured to send the data frame on the second channel when the at least two frequency bands are used to send the same data frame; when the When at least two frequency bands are used to send different data frames, the data frame with the smallest frame number among the multiple data frames that have not been sent is sent on the second channel.
  • the sending module 940 is configured to sense the channel state in the at least two frequency bands
  • the processing module 920 is configured to determine the backoff time when a third channel in the at least two frequency bands is in a busy state
  • the sending module 940 is configured to send the multi-band transmission connection establishment message frame again in the at least two frequency bands after waiting for the back-off time period.
  • the processing module 920 is configured to adopt a random back-off mechanism to determine the back-off duration.
  • the processing module 920 is configured to use a random backoff mechanism for each third channel when there are n third channels to determine the corresponding backoff duration, where n is An integer greater than 1; the minimum back-off time length among the n back-off time lengths is determined as the back-off time length.
  • the sending time of the multi-band transmission connection establishment message frame in the at least two frequency bands is synchronized.
  • Fig. 10 shows a block diagram of a data transmission device provided by another exemplary embodiment of the present disclosure.
  • the device can be implemented as all or a part of the second device through software, hardware or a combination of both.
  • the device includes:
  • the receiving module 1020 is configured to receive a multi-band transmission connection establishment message frame in at least two frequency bands, where the multi-frequency band transmission connection establishment message frame is used to request simultaneous transmission of data frames in at least two frequency bands;
  • the receiving module 1020 is configured to receive the data frame in all or part of the at least two frequency bands.
  • the receiving module 1120 may be a hardware device such as a radio frequency antenna, and is used to implement steps related to receiving.
  • the receiving module 1120 is configured to receive the same data frame on the at least two frequency bands; or, the receiving module 1120 is configured to receive the same data frame in the at least two frequency bands. Different said data frames are received in two frequency bands, and the different said data frames are obtained by dividing the data to be sent into blocks;
  • the data frame is sent when the at least two frequency bands are in an idle state.
  • the receiving module 1120 is configured to receive data frames on a second channel in the at least two frequency bands, and the second channel is idle in the at least two frequency bands. Status of the channel.
  • Fig. 11 shows a schematic structural diagram of a wireless communication device provided by an exemplary embodiment of the present disclosure.
  • the wireless communication device may be a first device or a second device.
  • the wireless communication device includes: a processor 101, a receiver 102, a transmitter 103, a memory 104, and a bus 105.
  • the processor 101 includes one or more processing cores, and the processor 101 executes various functional applications and information processing by running software programs and modules.
  • the receiver 102 and the transmitter 103 may be implemented as a communication component, and the communication component may be a communication chip.
  • the memory 104 is connected to the processor 101 through a bus 105.
  • the memory 104 may be used to store at least one instruction, and the processor 101 is used to execute the at least one instruction, so as to implement each step in the foregoing method embodiment.
  • the memory 104 can be implemented by any type of volatile or non-volatile storage device or a combination thereof.
  • the volatile or non-volatile storage device includes, but is not limited to: magnetic disks or optical disks, electrically erasable and programmable Read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static anytime access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM) .
  • An exemplary embodiment of the present disclosure also provides a computer-readable storage medium in which at least one instruction, at least one program, code set or instruction set is stored, the at least one instruction, the At least one program, the code set, or the instruction set is loaded and executed by the processor to implement each step in the foregoing method embodiment.

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Abstract

本公开提供了一种数据传输方法、装置、设备及存储介质，属于无线网络领域，该方法包括：第一设备生成多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；第一设备在所述至少两个频段下发送所述多频段传输连接建立消息帧；第一设备在所述至少两个频段中的全部或部分频段发送所述数据帧。本公开实现了在多频段上同时进行数据传输，提供更大的传输速率和吞吐量。

Description

数据传输方法、装置、设备及存储介质 技术领域
本公开涉及通信领域，特别涉及一种数据传输方法、装置、设备及存储介质
背景技术
下一代无线保真(Wireless Fidelity，Wi-Fi)技术中，所研究的范围包括：320MHz的带宽传输，多个频段的聚合及协同传输等，所提出的愿景相对于已有的电气和电子工程师协会(Institute ofElectrical and Electronics Engineers，IEEE)802.11ax提高至少四倍的速率以及吞吐量。主要的应用场景包括视频传输，增强现实(Augmented Reality，AR)、虚拟现实(Virtual Reality，VR)等。
其中，多个频段的聚合及协同传输是指设备间同时在2.4GHz、5.8GHz及6-7GHz的频段下进行通信，当然多频段也可包含毫米波频段，例如45GHz和60GHz。
发明内容
本公开实施例提供了一种数据传输方法、装置、设备及存储介质，可以用于解决如何在多个频段下进行数据传输的问题。所述技术方案如下：
根据本公开的一个方面，提供了一种数据传输方法，所述方法包括：
生成多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
在所述至少两个频段下发送所述多频段传输连接建立消息帧；
在所述至少两个频段中的全部或部分频段发送所述数据帧。
在一个可能的实现方式中，所述多频段传输连接建立消息帧，包括：
初始多频段发送请求消息帧(initial Multi-band TX MS1)；
或，多频段频段请求发送消息帧(Multi-band Request To Send，M-RTS)。
在一个可能的实现方式中，所述所述在所述至少两个频段下发送所述多频段传输连接建立消息帧，包括：
在所述至少两个频段下感知各个信道的状态；
当所述至少两个频段均为空闲状态时，在所述至少两个频段发送所述多频段传输连接建立消息帧；
所述在所述至少两个频段中的全部或部分频段发送所述数据帧，包括：
发送相同的所述数据帧；或，在所述至少两个频段中发送不同的数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的。
在一个可能的实现方式中，所述在所述至少两个频段下发送所述多频段传输连接建立消息帧，包括：
在所述至少两个频段下感知各个信道的状态；
当所述至少两个频段中存在第一信道为繁忙状态且存在第二信道为空闲状态时，在所述第二信道上发送所述多频段传输连接建立消息帧；
所述在所述至少两个频段中的全部或部分频段发送所述数据帧，包括：
在所述第二信道上发送所述数据帧。
在一个可能的实现方式中，所述在所述第二信道上发送所述数据帧，包括：
当所述至少两个频段用于发送相同的数据帧时，在所述第二信道上发送所述数据帧；
当所述至少两个频段用于发送不同的数据帧时，在所述第二信道上发送尚未发送的多个数据帧中具有最小帧号的数据帧。
在一个可能的实现方式中，所述在所述至少两个频段下发送所述多频段传输连接建立消息帧，包括：
在所述至少两个频段下感知信道状态；
当所述至少两个频段中存在第三信道为繁忙状态时，确定退避时长；
在等待所述退避时长后，在所述至少两个频段下再次发送所述多频段传输连接建立消息帧。
在一个可能的实现方式中，所述确定退避时长，包括：
采用随机退避机制，确定所述退避时长。
在一个可能的实现方式中，所述确定退避时长，包括：
当所述第三信道为n个时，对每个第三信道采用随机退避机制，确定相应的所述退避时长，n为大于1的整数；
将n个所述退避时长中的最小退避时长，确定为所述退避时长。
在一个可能的实现方式中，所述多频段传输连接建立消息帧在所述至少两个频段上的发送时间同步。
根据本公开的另一方面，提供了一种数据传输方法，所述方法包括：
在至少两个频段下接收多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
在所述至少两个频段的全部或部分频段中接收所述数据帧。
在一个可能的实现方式中，所述在所述至少两个频段的全部或部分频段中接收所述数据帧，包括：
在所述至少两个频段上接收相同的所述数据帧；或，在所述至少两个频段中接收不同的所述数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的；
其中，所述数据帧是在所述至少两个频段均处于空闲状态时发送的。
在一个可能的实现方式中，所述在所述至少两个频段的全部或部分频段中接收所述数据帧，包括：
在所述至少两个频段中的第二信道上接收数据帧，所述第二信道是所述至少两个频段中处于空闲状态的信道。
根据本公开的一个方面，提供了一种数据传输装置，所述装置包括：
处理模块，被配置为生成多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
发送模块，被配置为在所述至少两个频段下发送所述多频段传输连接建立消息帧；
所述发送模块，被配置为在所述至少两个频段中的全部或部分频段发送所述数据帧。
在一个可能的实现方式中，所述多频段传输连接建立消息帧，包括：
初始多频段发送请求消息帧(initial Multi-band TX MS1)；
或，多频段请求发送消息帧(Multi-band Request To Send，M-RTS)。
在一个可能的实现方式中，所述发送模块，被配置为在所述至少两个频段下感知各个信道的状态；当所述至少两个频段均为空闲状态时，在所述至少两个频段发送所述多频段传输连接建立消息帧；所述发送模块，被配置为发送相同的所述数据帧；或，在所述至少两个频段中发送不同的数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的。
在一个可能的实现方式中，所述发送模块，被配置为在所述至少两个频段下感知各个信道的状态；当所述至少两个频段中存在第一信道为繁忙状态且存 在第二信道为空闲状态时，在所述第二信道上发送所述多频段传输连接建立消息帧；
所述发送模块，被配置为在所述第二信道上发送所述数据帧。
在一个可能的实现方式中，所述发送模块，被配置为当所述至少两个频段用于发送相同的数据帧时，在所述第二信道上发送所述数据帧；当所述至少两个频段用于发送不同的数据帧时，在所述第二信道上发送尚未发送的多个数据帧中具有最小帧号的数据帧。
在一个可能的实现方式中，所述发送模块，被配置为在所述至少两个频段下感知信道状态；所述处理模块，被配置为当所述至少两个频段中存在第三信道为繁忙状态时，确定退避时长；所述发送模块，被配置为在等待所述退避时长后，在所述至少两个频段下再次发送所述多频段传输连接建立消息帧。
在一个可能的实现方式中，所述发送模块，被配置为采用随机退避机制，确定所述退避时长。
在一个可能的实现方式中，所述发送模块，被配置为当所述第三信道为n个时，对每个第三信道采用随机退避机制，确定相应的所述退避时长，n为大于1的整数；将n个所述退避时长中的最小退避时长，确定为所述退避时长。
在一个可能的实现方式中，所述发送模块，被配置为所述多频段传输连接建立消息帧在所述至少两个频段上的发送时间同步。
根据本公开的另一方面，提供了一种数据传输装置，所述装置包括：
接收模块，被配置为在至少两个频段下接收多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
所述接收模块，被配置为在所述至少两个频段的全部或部分频段中接收所述数据帧。
在一个可能的实现方式中，所述接收模块，被配置为在所述至少两个频段上接收相同的所述数据帧；或，所述接收模块，被配置为在所述至少两个频段中接收不同的所述数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的；
其中，所述数据帧是在所述至少两个频段均处于空闲状态时发送的。
在一个可能的实现方式中，所述接收模块，被配置为在所述至少两个频段中的第二信道上接收数据帧，所述第二信道是所述至少两个频段中处于空闲状 态的信道。
根据本公开的另一方面，提供了一种无线通信设备，所述无线通信设备包括：
处理器；
与所述处理器相连的收发器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为加载并执行所述可执行指令以实现如上述方面提供的数据传输方法。
根据本公开的另一方面，提供了一种无线通信设备，所述无线通信设备包括：
处理器；
与所述处理器相连的收发器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为加载并执行所述可执行指令以实现如上述方面提供的数据传输方法。
根据本公开的另一方面，提供了一种计算机可读存储介质，所述可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现如上方面所述的数据传输方法。
本公开实施例提供的技术方案带来的有益效果至少包括：
通过生成多频段传输连接建立消息帧，该多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送，发送多频段传输连接建立消息帧，进而在至少两个频段中的全部或部分频段发送数据帧，实现了在多频段上同时进行数据传输，提供更大的传输速率和吞吐量。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本公开一个示例性实施例提供的通信系统的框图；
图2是本公开一个示例性实施例提供的数据传输方法的流程图；
图3是本公开一个示例性实施例提供的数据传输方法的流程图；
图4是本公开另一个示例性实施例提供的数据传输方法的流程图；
图5是本公开另一个示例性实施例提供的数据传输方法的流程图；
图6是本公开另一个示例性实施例提供的数据传输方法的流程图；
图7是本公开另一个示例性实施例提供的多频段下的随机退避机制的流程图；
图8是本公开另一个示例性实施例提供的数据传输方法的示意图；
图9是本公开一个示例性实施例提供的数据传输装置的结构示意图；
图10是本公开另一个示例性实施例提供的数据传输装置的结构示意图；
图11是本公开另一个示例性实施例提供的无线通信设备的结构示意图。
具体实施方式
为使本公开的目的、技术方案和优点更加清楚，下面将结合附图对本公开实施方式作进一步地详细描述。
本公开实施例描述的通信系统以及业务场景是为了更加清楚地说明本公开实施例的技术方案，并不构成对本公开实施例提供的技术方案的限定，本领域普通技术人员可知，随着通信系统的演变和新业务场景的出现，本公开实施例提供的技术方案对于类似的技术问题，同样适用。
图1示出了本公开一个示意性实施例提供的通信系统的框图。该通信系统包括：无线接入点(Access Point，AP)120和站点(Station)140。
无线接入点120用于提供无线接入功能。无线接入点120可以是无线路由器、具有Wi-Fi功能的基站等。一个无线接入点120可接入多个站点140。
站点140接入无线接入点120。站点140可以是手机、平板、笔记本电脑、电子书、工业机器等设备。
上述通信系统可以是电气和电子工程师协会(Institute of Electrical and Electronics Engineers，IEEE)802.11a/b/g/n/ac/ax/be。本公开实施例以上述通信系统是IEEE802.11be来举例说明。
上述通信系统包括两种组网形式：
第一，基于AP 120组建的基础无线网络(Infra)：也称为基础网，是由AP 120创建，众多STA 140接入所组成的无线网络。这种类型的网络的特点是：AP 120是整个网络的中心，网络中所有的通信都通过AP 120来转发完成。
在这种组网情况下，本公开中的第一设备可以是无线接入点120和站点140中的一个，第二设备可以是无线接入点120和站点140中的另一个。
第二，基于自组网的无线网络(Ad hoc)：也称为自组网，是仅由两个以上STA 140自己组成的网络，网络中不存在AP 120。这种类型的网络是一种松散的结构，网络中所有的STA 140都可以直接通信。
在这种组网情况下，本公开中的第一设备可以是第一站点140，第二设备可以是第二站点140。
RTS/CTS握手机制已经被广泛用于解决无线网络中的隐藏终端问题。RTS/CTS握手机制(原握手机制)规定：第一设备在向相邻的第二设备正式发送数据包之前，必须先向第二设备发出一个RTS请求帧；第二设备在接到RTS后，如果第二设备认为其周围没有隐藏终端，第二设备就向第一设备返回CTS回复帧；否则第二设备就不作任何反应；只有收到第二设备返回的CTS回复帧后，第一设备才能向第二设备发送数据帧(DATA)；而第二设备在收到第一设备的数据帧后，需向第一设备发出回复确认帧(ACK)。
图2示出了本公开一个示例性实施例提供的数据传输方法的流程图。该方法可以由图1所示的通信系统来执行。该方法包括：
步骤201，第一设备生成多频段传输连接建立消息帧，多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
多频段传输连接建立消息帧采用管理消息帧或控制消息帧来实现。
当采用管理消息帧实现时，该管理消息帧可以是初始多频段发送请求消息帧initial Multi-band TX MS1；当采用控制消息帧来实现时，该控制消息帧可以是多频段请求发送消息帧(M-RTS)。
步骤202，第一设备在至少两个频段下发送多频段传输连接建立消息帧；
至少两个频段包括：2.4GHz频段、5.8GHz频段和6-7GHz频段中的至少两个频段。可选地，至少两个频段还包括Wi-Fi协议所支持的其它通信频段，比如也可以包括毫米波频段，譬如45GHz频段和60GHz频段。本公开实施例以至少两个频段包括：2.4GHz频段、5.8GHz频段和6-7GHz频段共三个频段来举例说 明，但对此不加以限定。
第一设备在至少两个频段下同时发送多频段传输连接建立消息帧。
步骤203，第二设备在至少两个频段下接收多频段传输连接建立消息帧；
可选地，第二设备还在至少两个频段向第一设备回复多频段传输连接响应消息帧(Multi-band Clear To send，M-CTS)，第一设备接收第二设备在至少两个频段下的M-CTS。
步骤204，第一设备在至少两个频段中的全部或部分频段发送数据帧；
步骤205，第二设备在至少两个频段中的全部或部分频段接收数据帧。
综上所述，本实施例提供的方法，通过生成多频段传输连接建立消息帧，该多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送，发送多频段传输连接建立消息帧，进而在至少两个频段中的全部或部分频段发送数据帧，实现了在多频段上同时进行数据传输，实现更大的传输速率和吞吐量。
在本公开实施例中，由第一设备执行的步骤可单独实现成为第一设备侧的数据传输方法，由第二设备执行的步骤可单独实现成为第二设备侧的数据传输方法。
以第一设备和第二设备均支持在全部候选频段(比如2.4GHz频段、5.8GHz频段和6-7GHz频段共三个频段)上进行数据传输，且三个频段均为信道空闲状态为例，本公开提供有如下实施例。
图3示出了本公开另一个示例性实施例提供的数据传输方法的流程图。该方法可以由图1所示的通信系统来执行。该方法包括：
步骤301，第一设备生成多频段传输连接建立消息帧，多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
多频段传输连接建立消息帧采用管理消息帧或控制消息帧来实现。
当采用管理消息帧实现时，该管理消息帧可以是初始多频段发送请求消息帧initial Multi-band TX MS1；当采用控制消息帧来实现时，该控制消息帧可以是多频段请求发送消息帧(M-RTS)。
步骤302，第一设备在至少两个频段下感知各个信道的状态；
第一设备采用空闲信道评估(Clear Channel Assessment，CCA)在至少两个频段下感知各个信道的状态。例如，在物理层采用能量检测(Energy Detection， ED)机制，对多个频段中的信道上的信号强度进行感知；如果感知的信号强度超过阈值，则判断信道状态为繁忙；如果感知的信号强度低于阈值，则判断信道状态为空闲。
作为本实施例的一个示例，出于保证后向兼容性，本实施例中采用的CCA机制与IEEE 802.11a/b/g/n/ac/ax中的CCA机制一致。
步骤303，第一设备在至少两个频段均为空闲状态时，在至少两个频段中发送多频段传输连接建立消息帧；
步骤304，第二设备在至少两个频段中接收多频段传输连接建立消息帧；
步骤305，第二设备在至少两个频段中发送多频段传输连接响应消息帧；
多频段传输连接响应消息帧采用管理消息帧或控制消息帧来实现。当第二设备确定满足数据接收条件(比如不存在隐藏节点的冲突发送)时，在至少两个频段中回复多频段传输连接响应消息帧。
当采用管理消息帧实现时，该管理消息帧可以是初始多频段发送响应消息帧initial Multi-band TX MS2；当采用控制消息帧来实现时，该控制消息帧可以是多频段清除发送消息帧(M-CTS)。
步骤306，第一设备在至少两个频段中接收多频段传输连接响应消息帧；
步骤307，第一设备在至少两个频段发送相同的数据帧；或，在至少两个频段中发送不同的数据帧；
其中，不同的数据帧是对待发送的数据进行分块后得到的。其中不同的数据帧中的数据是指上层数据，在设备内部可以通过MAC(Media Access Control)层将上层数据进行分块，譬如将100M字节的数据拆分为三块，且进行编号Block1、Block2及Block3为三个不同的数据帧后，分别在2.4GHz、5.8GHz及6-7GHz的频段下进行传输；或者，在设备内部的MAC层之上将数据进行分块及编号，透传给MAC层，MAC层将数据进行重新封装得到三个不同的数据帧后，分别在2.4GHz、5.8GHz及6-7GHz的频段下进行传输。
相同的数据帧中的数据也是指上层数据，可在设备内部通过MAC层处理加以不同的标识在不同的频段下进行传输，譬如标识1表示数据在2.4GHz频段下进行传输，标识2表示数据在5.8GHz频段下进行传输，标识3表示数据在6-7GHz频段下进行传输；或通过上层处理，透传到MAC层，由MAC层封装为数据帧后，分别在2.4GHz、5.8GHz及6-7GHz的频段下进行传输。
可选地，第一设备在接收到多频段传输连接响应消息帧后，在至少两个频 段上同时发送相同的数据帧；或，在至少两个频段中同时发送不同的数据帧。
步骤308，第二设备在至少两个频段接收相同的数据帧；或，在至少两个频段中接收不同的数据帧。
例如，第一时刻在频段A上发送数据帧1、在频段B上发送数据帧2、在频段C上发送数据帧3；第二时刻在频段A上发送数据帧4、在频段B上发送数据帧5、在频段C上发送数据帧6；第三时刻在频段A上发送数据帧7、在频段B上发送数据帧8、在频段C上发送数据帧9。
综上所述，本实施例提供的方法，通过生成多频段传输连接建立消息帧，该多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送，发送多频段传输连接建立消息帧，进而在至少两个频段中的全部或部分频段发送数据帧，实现了在多频段上同时进行数据传输，实现更大的传输速率和吞吐量。
在本实施例提供的方法中，第一设备在至少两个频段上发送相同的数据帧时，第二设备能够在至少两个频段上同时接收到相同的数据帧，从而接收到同一数据帧的多个副本，提高解码正确率。
在本实施例提供的方法中，第一设备在至少两个频段上发送不同的数据帧时，第二设备能够在至少两个频段上接收到不同的数据帧，从而实现更大的传输速率和吞吐量。
针对上述步骤204，由于第一设备在多个频段上同时发送数据帧时，可能会出现部分频段被其它设备占用的情形。因此，本公开实施例提供有如下两种实施例。
图4示出了本公开另一个示例性实施例提供的数据传输方法的流程图。该方法可以由图1所示的通信系统来执行。该方法包括：
步骤401，第一设备生成多频段传输连接建立消息帧，多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
多频段传输连接建立消息帧采用管理消息帧或控制消息帧来实现。
当采用管理消息帧实现时，该管理消息帧可以是初始多频段发送请求消息帧initial Multi-band TX MS1；当采用控制消息帧来实现时，该控制消息帧可以是多频段请求发送消息帧(M-RTS)。
步骤402，第一设备在至少两个频段下感知各个信道的状态；
第一设备采用空闲信道评估(Clear Channel Assessment，CCA)在至少两个频段下感知各个信道的状态。例如，在物理层采用能量检测(Energy Detection，ED)机制，对多个频段中的信道上的信号强度进行感知；如果感知的信号强度超过阈值，则判断信道状态为繁忙；如果感知的信号强度低于阈值，则判断信道状态为空闲。
作为本实施例的一个示例，出于保证后向兼容性，本实施例中采用的CCA机制与IEEE 802.11a/b/g/n/ac/ax中的CCA机制一致。
步骤403，第一设备在至少两个频段存在第一信道为繁忙状态且存在第二信道为空闲状态时，在第二信道上发送多频段传输连接建立消息帧；
当第二信道为一个信道时，该多频段传输连接建立消息帧可视为单频段传输连接建立消息帧；当第二信道为两个以上信道时，第一设备同时在至少两个第二信道上发送多频段传输连接建立消息帧。
多频段传输连接建立消息帧采用管理消息帧或控制消息帧来实现。
当采用管理消息帧实现时，该管理消息帧可以是初始多频段发送请求消息帧(initial Multi-band TX MS1)；当采用控制消息帧来实现时，该控制消息帧可以是多频段请求发送消息帧(M-RTS)。
步骤404，第二设备在第二信道上接收多频段传输连接建立消息帧。
步骤405，第二设备在第二信道上回复多频段传输连接响应消息帧。
多频段传输连接响应消息帧采用管理消息帧或控制消息帧来实现。当第二设备确定满足数据接收条件(比如不存在隐藏节点的冲突发送)时，在至少两个频段中回复多频段传输连接响应消息帧。
当采用管理消息帧实现时，该管理消息帧可以是初始多频段发送响应消息帧initial Multi-band TX MS2；当采用控制消息帧来实现时，该控制消息帧可以是多频段清除发送消息帧(M-CTS)。
当第二信道为单个信道时，多频段传输连接响应消息帧可视为单频段传输连接响应消息帧。
步骤406，第一设备在第二信道上发送数据帧。
当第二信道是单个信道且至少两个频段用于发送相同的数据帧时，第一设备在第二信道上发送数据帧；当第二信道是单个信道且至少两个频段用于发送不同的数据帧时，在第二信道上发送尚未发送的多个数据帧中具有最小帧号的数据帧。其中，不同的数据帧是对待发送的数据进行分块后得到的。
当第二信道为至少两个信道且至少两个频段用于发送相同的数据帧时，第一设备在至少两个第二信道上发送相同的数据帧；当第二信道为至少两个信道且至少两个频段用于发送不同的数据帧时，第一设备在至少两个第二信道上发送不同的数据帧。
其中，不同的数据帧是对待发送的数据进行分块后得到的。不同的数据帧中的数据是指上层数据。在设备内部可以通过MAC(Media Access Control)层将上层数据进行分块，譬如将100M字节的数据拆分为三块，且进行编号Block1、Block2及Block3为三个不同的数据帧后，分别在2.4GHz、5.8GHz及6-7GHz的频段下进行传输；或者，在设备内部的MAC层之上将数据进行分块及编号，透传给MAC层，MAC层将数据进行重新封装得到三个不同的数据帧后，分别在2.4GHz、5.8GHz及6-7GHz的频段下进行传输。
相同的数据帧中的数据也是指上层数据，可在设备内部通过MAC层处理加以不同的标识在不同的频段下进行传输，譬如标识1表示数据在2.4GHz频段下进行传输，标识2表示数据在5.8GHz频段下进行传输，标识3表示数据在6-7GHz频段下进行传输；或通过上层处理，透传到MAC层，由MAC层封装为数据帧后，分别在2.4GHz、5.8GHz及6-7GHz的频段下进行传输。
可选地，第一设备在接收到多频段传输连接响应消息帧后，在第二信道上发送数据帧。
步骤407，第二设备在第二信道上接收数据帧。
在一个示例中，至少两个频段包括：频段A、频段B和频段C时，若频段A处于繁忙状态且频段B、C处于空闲状态，则第一设备采用频段B和频段C向第二设备发送数据帧。
综上所述，本实施例提供的方法，通过在至少两个频段中的第一信道处于繁忙状态且第二信道处于空闲状态时，优先在第二信道上进行数据帧的发送，保证了数据发送的及时性。
图5示出了本公开另一个示例性实施例提供的数据传输方法的流程图。该方法可以由图1所示的通信系统来执行。该方法包括：
步骤501，第一设备生成多频段传输连接建立消息帧，多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
多频段传输连接建立消息帧采用管理消息帧或控制消息帧来实现。
当采用管理消息帧实现时，该管理消息帧可以是初始多频段发送请求消息帧(initial Multi-band TX MS1)；当采用控制消息帧来实现时，该控制消息帧可以是多频段请求发送消息帧(M-RTS)。
步骤502，第一设备在至少两个频段下感知各个信道的状态；
第一设备采用空闲信道评估(Clear Channel Assessment，CCA)在至少两个频段下感知各个信道的状态。例如，在物理层采用能量检测(Energy Detection，ED)机制，对多个频段中的信道上的信号强度进行感知；如果感知的信号强度超过阈值，则判断信道状态为繁忙；如果感知的信号强度低于阈值，则判断信道状态为空闲。
作为本实施例的一个示例，出于保证后向兼容性，本实施例中采用的CCA机制与IEEE 802.11a/b/g/n/ac/ax中的CCA机制一致。
步骤503，第一设备在至少两个频段中存在第三信道处于繁忙状态时，确定退避时长；
可选地，第一设备采用随机退避机制，确定退避时长。示意性的，第一设备在感知信道繁忙的信道下进行随机退避机制，随机数字m的选择为m＝2 n-1，其中，n的初始值为3，最大值为1023，退避时长为m*slotTime，slotTime＝5us。
可选地，当第三信道为n个时，第一设备对每个第三信道采用随机退避机制，确定相应的退避时长，n为大于1的整数；将n个退避时长中的最小退避时长，确定为本次使用的退避时长。
步骤504，在等待退避时长后，第一设备在至少两个频段下发送多频段传输连接建立消息帧；
可选地，在等待退避时长后，第一设备再次在至少两个频段下感知各个信道的状态；当至少两个频段下的各个信道的状态均为空闲状态时，第一设备在至少两个频段下发送多频段传输连接建立消息帧，进入步骤505；当至少两个频段下的各个信道的状态存在第三信道处于繁忙状态时，再次执行步骤503。
步骤505，第二设备在至少两个频段中接收多频段传输连接建立消息帧；
步骤506，第二设备在至少两个频段中回复多频段传输连接响应消息帧；
多频段传输连接响应消息帧采用管理消息帧或控制消息帧来实现。当第二设备确定满足数据接收条件(比如不存在隐藏节点的冲突发送)时，在至少两个频段中回复多频段传输连接响应消息帧。
当采用管理消息帧实现时，该管理消息帧可以是初始多频段发送响应消息 帧initial Multi-band TX MS2；当采用控制消息帧来实现时，该控制消息帧可以是多频段清除发送消息帧(M-CTS)。
步骤507，第一设备在至少两个频段发送相同的数据帧；或，在至少两个频段中发送不同的数据帧；
其中，不同的数据帧是对待发送的数据进行分块后得到的。
可选地，第一设备在接收到多频段传输连接响应消息帧后，在至少两个频段上同时发送相同的数据帧；或，在至少两个频段中同时发送不同的数据帧。
其中，不同的数据帧是对待发送的数据进行分块后得到的。不同的数据帧中的数据是指上层数据。在设备内部可以通过MAC(Media Access Control)层将上层数据进行分块，譬如将100M字节的数据拆分为三块，且进行编号Block1、Block2及Block3为三个不同的数据帧后，分别在2.4GHz、5.8GHz及6-7GHz的频段下进行传输；或者，在设备内部的MAC层之上将数据进行分块及编号，透传给MAC层，MAC层将数据进行重新封装得到三个不同的数据帧后，分别在2.4GHz、5.8GHz及6-7GHz的频段下进行传输。
相同的数据帧中的数据也是指上层数据，可在设备内部通过MAC层处理加以不同的标识在不同的频段下进行传输，譬如标识1表示数据在2.4GHz频段下进行传输，标识2表示数据在5.8GHz频段下进行传输，标识3表示数据在6-7GHz频段下进行传输；或通过上层处理，透传到MAC层，由MAC层封装为数据帧后，分别在2.4GHz、5.8GHz及6-7GHz的频段下进行传输。
步骤508，第二设备在至少两个频段接收相同的数据帧；或，在至少两个频段中接收不同的数据帧。
综上所述，本实施例提供的方法，通过在多频段下的传输发生信道繁忙时，在多频段下采用随机退避机制来重新获得数据的传输机会，从而提供了信道繁忙下的另一种数据传输方式，能够实现更大的传输速率和吞吐量。
在一个示例中，如图6所示，第一设备和第二设备均支持在2.4GHz频段、5.8GHz频段和6-7GHz频段下进行数据帧的同时传输，第一设备在发送多频段传输建立消息帧前进行CCA，当发现2.4GHz上的信道处于繁忙状态时，采用随机退避机制确定退避时长，在等待退避时长且三个频段上的信道均为空闲状态后，再在2.4GHz频段、5.8GHz频段和6-7GHz频段共三个频段上发送多频段传输建立消息帧。
需要说明的是，多频段传输连接建立消息帧在至少两个频段上的发送时间 同步，多频段传输连接响应消息帧在至少两个频段上的发送时间同步，如图7所示。多频段传输连接建立消息帧和多频段传输连接响应消息帧之间的间隔为短帧间间隔(short inter-frame space，SIFS)。为了保证每个频段下时钟同步，即使每个频段下进行数据传输时采用的MCS方式不一样，则时间不一致部分可填充补齐。
在基于上述图2、图3、图4或图5的可选实施例中，第一设备和第二设备在进行初始连接时，需要告知双方在至少两个频段下同时进行通信的能力信息值。此时，第一设备在至少两个频段下发送多频段传输连接建立消息帧之前，还包括如下步骤，如图8所述：
步骤801，第一设备生成第一消息帧，第一消息帧中携带有第一能力信息，第一能力信息用于指示第一设备支持同时在至少两个频段上进行数据传输；
至少两个频段包括：2.4GHz频段、5.8GHz频段和6-7GHz频段中的至少两个频段。可选地，至少两个频段还包括Wi-Fi协议所支持的其它通信频段。以下实施例中简称2.4GHz频段为频段A、5.8GHz频段为频段B、6-7GHz频段为频段C。
可选地，第一消息帧是多频段协商请求帧(Multi-band operation Request)。
示例性的，第一设备在存在大量数据需要发送时，生成第一消息帧。
步骤802，第一设备发送第一消息帧；
第一设备在单个频段上发送第一消息帧。该单个频段可以是第一频段，该单个频段是第一设备和第二设备已经建立关联的频段。
步骤803，第二设备接收第一消息帧，第一消息帧携带有第一能力信息，第一能力信息用于指示第一设备支持同时在至少两个频段上进行数据传输；
第二设备在单个频段上接收第一消息帧。比如，第二设备在第一频段上接收第一消息帧。
步骤804，第二设备生成第二消息帧，第二消息帧中携带有第二能力信息，第二能力信息用于指示第二设备支持同时在至少两个频段上进行数据传输；
可选地，第二消息帧是多频段协商响应帧(Multi-band Operation Response)。
步骤805，第二设备发送第二消息帧；
第二设备在单个频段上发送第二消息帧，该单个频段可以是第一频段。
步骤806，第一设备接收第二消息帧，第二消息帧携带有第二能力信息，第 二能力信息用于指示第二设备支持同时在至少两个频段上进行数据传输；
第一设备在单个频段上接收第二消息帧。比如，第一设备在第一频段上接收第二消息帧。
步骤807，第一设备根据第一能力信息和第二能力信息，确定至少两个频段；
第一设备根据第一能力信息和第二能力信息，确定第一设备和第二设备同时支持的传输能力，也即同时支持的至少两个频段。
可选地，至少两个频段包括第一频段和第二频段，第一频段是用来发送第一消息帧和第二消息帧的频段，第二频段是不同于第一频段的频段。
步骤208，第二设备根据第一能力信息和第二能力信息，在至少两个频段上接收数据。
第二设备根据第一能力信息和第二能力信息，确定第一设备和第二设备同时支持的传输能力，也即同时支持的至少两个频段。
在基于图8的可选实施例中，第一能力信息和第二能力信息包括如下信息项：至少两个频段的频段标识。
可选地，第一能力信息还包括：第一设备支持的工作带宽、MCS或密钥复用信息中的至少一项。
可选地，第二能力信息还包括：第二设备支持的工作带宽、MCS或密钥复用确认信息中的至少一项。
其中，工作带宽是20MHz、40MHz、80MHz、80+80MHz(不连续，非重叠)/160MHz(连续)、160+160MHz(不连续、非重叠)/320MHz所形成的组合中的至少一种。
其中，密钥复用信息用来指示复用已有密钥(第一频段上的密钥)来进行数据加密。
在一个示例中，采用8个比特来表示频段和工作带宽。频段标识的个数与频段的数量相同。以频段包括：2.4GHz频段、5.8GHz频段和6-7GHz频段为例，频段标识占用8个比特中的前3个比特，前3个比特中的第1个比特对应2.4GHz频段、第2个比特对应5.8GHz频段、第3个比特对应6-7GHz频段。
当第1个比特的取值为1时，代表支持2.4GHz频段的通信；当第1个比特的取值为0时，代表不支持2.4GHz频段的通信。当第2个比特的取值为1时，代表支持5.8GHz频段的通信；当第2个比特的取值为0时，代表不支持5.8GHz频段的通信。当第3个比特的取值为1时，代表支持6-7GHz频段的通信；当第 3个比特的取值为0时，代表不支持6-7GHz频段的通信。
采用8个比特中的后5个比特来指示工作带宽。第4个比特对应20MHz，第5个比特对应40MHz，第6个比特对应80MHz，第7个比特对应80+80MHz(不连续，非重叠)/160MHz(连续)，第8个比特160+160MHz(不连续、非重叠)/320MHz。当比特取值为1时，代表支持该工作带宽；当比特取值为0时，代表不支持该工作带宽。
在一个示例中，上述各个信息项采用信息元素(Information Element，IE)来表示。IE是一个帧(比如管理消息帧)的组成部分，其长度不定。示例性的，IE包括一个Element ID(元素识别码)位、一个长度(Length)位以及一个长度不定的内容位。其中，长度位用于表示内容位的比特数量。上述信息项可以每个信息项占用一个IE，也可以两个或多个信息项占用同一个IE。IE的元素识别码可以采用相关技术中的保留位来表示，比如11至15、43至49、50-255等。
在基于图8的可选实施例中，所述第一消息帧为信标帧(Beacon Frame)，所述第二消息帧为关联请求帧(Association Request Frame)；或，所述第一消息帧为探测请求帧(Probe Request Frame)，所述第二消息帧为探测响应帧(Probe Response Frame)；或，所述第一消息帧为关联请求帧(Association Request Frame)，所述第二消息帧为关联响应帧(Association Response Frame)；或，所述第一消息帧为认证请求帧(Authentication Request Frame)，所述第二消息帧为认证响应帧(Authentication Response Frame)。
以下为本公开的装置实施例，对于装置实施例中未详细介绍的内容，可以参考上述方法实施例的相关细节。
图9示出了本公开另一个示例性实施例提供的数据传输装置的框图。该装置可以通过软件、硬件或者两者的结合实现成为第一设备的全部或一部分。该装置包括：
处理模块920，被配置为生成多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
发送模块940，被配置为在所述至少两个频段下发送所述多频段传输连接建立消息帧；
所述发送模块940，被配置为在所述至少两个频段中的全部或部分频段发送所述数据帧。
处理模块920可以是中央处理器或是基带处理器等硬件设备，用于实现有关计算、生成和处理的步骤。发送模块940可以为射频天线等硬件设备，用于实现有关发送的步骤。
在一个可选的实施例中，所述多频段传输连接建立消息帧，包括：
初始多频段发送请求消息帧(initial Multi-band TX MS1)；
或，多频段请求发送消息帧(M-RTS)。
在一个可选的实施例中，所述发送模块，被配置为在所述至少两个频段下感知各个信道的状态；当所述至少两个频段均为空闲状态时，在所述至少两个频段发送所述多频段传输连接建立消息帧；
所述发送模块940，被配置为发送相同的所述数据帧；或，在所述至少两个频段中发送不同的数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的。
在一个可选的实施例中，所述发送模块940，被配置为在所述至少两个频段下感知各个信道的状态；当所述至少两个频段中存在第一信道为繁忙状态且存在第二信道为空闲状态时，在所述第二信道上发送所述多频段传输连接建立消息帧；
所述发送模块940，被配置为在所述第二信道上发送所述数据帧。
在一个可选的实施例中，所述发送模块940，被配置为当所述至少两个频段用于发送相同的数据帧时，在所述第二信道上发送所述数据帧；当所述至少两个频段用于发送不同的数据帧时，在所述第二信道上发送尚未发送的多个数据帧中具有最小帧号的数据帧。
在一个可选的实施例中，所述发送模块940，被配置为在所述至少两个频段下感知信道状态；
所述处理模块920，被配置为当所述至少两个频段中存在第三信道为繁忙状态时，确定退避时长；
所述发送模块940，被配置为在等待所述退避时长后，在所述至少两个频段下再次发送所述多频段传输连接建立消息帧。
在一个可选的实施例中，所述处理模块920，被配置为采用随机退避机制，确定所述退避时长。
在一个可选的实施例中，所述处理模块920，被配置为当所述第三信道为n个时，对每个第三信道采用随机退避机制，确定相应的所述退避时长，n为大于 1的整数；将n个所述退避时长中的最小退避时长，确定为所述退避时长。
在一个可选的实施例中，所述多频段传输连接建立消息帧在所述至少两个频段上的发送时间同步。
图10示出了本公开另一个示例性实施例提供的数据传输装置的框图。该装置可以通过软件、硬件或者两者的结合实现成为第二设备的全部或一部分。该装置包括：
接收模块1020，被配置为在至少两个频段下接收多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
所述接收模块1020，被配置为在所述至少两个频段的全部或部分频段中接收所述数据帧。
接收模块1120可以为射频天线等硬件设备，用于实现有关接收的步骤。
在一个可选的实施例中，所述接收模块1120，被配置为在所述至少两个频段上接收相同的所述数据帧；或，所述接收模块1120，被配置为在所述至少两个频段中接收不同的所述数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的；
其中，所述数据帧是在所述至少两个频段均处于空闲状态时发送的。
在一个可选的实施例中，所述接收模块1120，被配置为在所述至少两个频段中的第二信道上接收数据帧，所述第二信道是所述至少两个频段中处于空闲状态的信道。
图11示出了本公开一个示例性实施例提供的无线通信设备的结构示意图，该无线通信设备可以是第一设备或第二设备。该无线通信设备包括：处理器101、接收器102、发射器103、存储器104和总线105。
处理器101包括一个或者一个以上处理核心，处理器101通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器102和发射器103可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器104通过总线105与处理器101相连。
存储器104可用于存储至少一个指令，处理器101用于执行该至少一个指 令，以实现上述方法实施例中的各个步骤。
此外，存储器104可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：磁盘或光盘，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，静态随时存取存储器(SRAM)，只读存储器(ROM)，磁存储器，快闪存储器，可编程只读存储器(PROM)。
本公开一示例性实施例还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至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现上述方法实施例中的各个步骤。
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。
以上所述仅为本公开的较佳实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (27)

  1. 一种数据传输方法，其特征在于，所述方法包括：
    生成多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
    在所述至少两个频段下发送所述多频段传输连接建立消息帧；
    在所述至少两个频段中的全部或部分频段发送所述数据帧。
  2. 根据权利要求1所述的方法，其特征在于，所述多频段传输连接建立消息帧，包括：
    初始多频段发送请求消息帧；
    或，多频段请求发送消息帧。
  3. 根据权利要求1所述的方法，其特征在于，所述在所述至少两个频段下发送所述多频段传输连接建立消息帧，包括：
    在所述至少两个频段下感知各个信道的状态；
    当所述至少两个频段均为空闲状态时，在所述至少两个频段发送所述多频段传输连接建立消息帧；
    所述在所述至少两个频段中的全部或部分频段发送所述数据帧，包括：
    发送相同的所述数据帧；或，在所述至少两个频段中发送不同的数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的。
  4. 根据权利要求1所述的方法，其特征在于，所述在所述至少两个频段下发送所述多频段传输连接建立消息帧，包括：
    在所述至少两个频段下感知各个信道的状态；
    当所述至少两个频段中存在第一信道为繁忙状态且存在第二信道为空闲状态时，在所述第二信道上发送所述多频段传输连接建立消息帧；
    所述在所述至少两个频段中的全部或部分频段发送所述数据帧，包括：
    在所述第二信道上发送所述数据帧。
  5. 根据权利要求4所述的方法，其特征在于，所述在所述第二信道上发送 所述数据帧，包括：
    当所述至少两个频段用于发送相同的数据帧时，在所述第二信道上发送所述数据帧；
    当所述至少两个频段用于发送不同的数据帧时，在所述第二信道上发送尚未发送的多个数据帧中具有最小帧号的数据帧。
  6. 根据权利要求1所述的方法，其特征在于，所述在所述至少两个频段下发送所述多频段传输连接建立消息帧，包括：
    在所述至少两个频段下感知信道状态；
    当所述至少两个频段中存在第三信道为繁忙状态时，确定退避时长；
    在等待所述退避时长后，在所述至少两个频段下发送所述多频段传输连接建立消息帧。
  7. 根据权利要求6所述的方法，其特征在于，所述确定退避时长，包括：
    采用随机退避机制，确定所述退避时长。
  8. 根据权利要求7所述的方法，其特征在于，所述确定退避时长，包括：
    当所述第三信道为n个时，对每个第三信道采用随机退避机制，确定相应的所述退避时长，n为大于1的整数；
    将n个所述退避时长中的最小退避时长，确定为所述退避时长。
  9. 根据权利要求1至3任一所述的方法，其特征在于，
    所述多频段传输连接建立消息帧在所述至少两个频段上的发送时间同步。
  10. 一种数据传输方法，其特征在于，所述方法包括：
    在至少两个频段下接收多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
    在所述至少两个频段的全部或部分频段中接收所述数据帧。
  11. 根据权利要求10所述的方法，其特征在于，所述在所述至少两个频段 的全部或部分频段中接收所述数据帧，包括：
    在所述至少两个频段上接收相同的所述数据帧；
    或，
    在所述至少两个频段中接收不同的所述数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的；
    其中，所述数据帧是在所述至少两个频段均处于空闲状态时发送的。
  12. 根据权利要求10所述的方法，其特征在于，所述在所述至少两个频段的全部或部分频段中接收所述数据帧，包括：
    在所述至少两个频段中的第二信道上接收数据帧，所述第二信道是所述至少两个频段中处于空闲状态的信道。
  13. 一种数据传输装置，其特征在于，所述装置包括：
    处理模块，被配置为生成多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
    发送模块，被配置为在所述至少两个频段下发送所述多频段传输连接建立消息帧；
    所述发送模块，被配置为在所述至少两个频段中的全部或部分频段发送所述数据帧。
  14. 根据权利要求13所述的装置，其特征在于，所述多频段传输连接建立消息帧，包括：
    初始多频段发送请求消息帧；
    或，多频段请求发送消息帧。
  15. 根据权利要求13所述的装置，其特征在于，
    所述发送模块，被配置为在所述至少两个频段下感知各个信道的状态；当所述至少两个频段均为空闲状态时，在所述至少两个频段发送所述多频段传输连接建立消息帧；
    所述发送模块，被配置为发送相同的所述数据帧；或，在所述至少两个频 段中发送不同的数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的。
  16. 根据权利要求13所述的装置，其特征在于，
    所述发送模块，被配置为在所述至少两个频段下感知各个信道的状态；当所述至少两个频段中存在第一信道为繁忙状态且存在第二信道为空闲状态时，在所述第二信道上发送所述多频段传输连接建立消息帧；
    所述发送模块，被配置为在所述第二信道上发送所述数据帧。
  17. 根据权利要求16所述的装置，其特征在于，
    所述发送模块，被配置为当所述至少两个频段用于发送相同的数据帧时，在所述第二信道上发送所述数据帧；当所述至少两个频段用于发送不同的数据帧时，在所述第二信道上发送尚未发送的多个数据帧中具有最小帧号的数据帧。
  18. 根据权利要求13所述的装置，其特征在于，
    所述发送模块，被配置为在所述至少两个频段下感知信道状态；
    所述处理模块，被配置为当所述至少两个频段中存在第三信道为繁忙状态时，确定退避时长；
    所述发送模块，被配置为在等待所述退避时长后，在所述至少两个频段下再次发送所述多频段传输连接建立消息帧。
  19. 根据权利要求18所述的装置，其特征在于，
    所述处理模块，被配置为采用随机退避机制，确定所述退避时长。
  20. 根据权利要求18所述的装置，其特征在于，
    所述处理模块，被配置为当所述第三信道为n个时，对每个第三信道采用随机退避机制，确定相应的所述退避时长，n为大于1的整数；将n个所述退避时长中的最小退避时长，确定为所述退避时长。
  21. 根据权利要求13至15任一所述的装置，其特征在于，
    所述多频段传输连接建立消息帧在所述至少两个频段上的发送时间同步。
  22. 一种数据传输装置，其特征在于，所述装置包括：
    接收模块，被配置为在至少两个频段下接收多频段传输连接建立消息帧，所述多频段传输连接建立消息帧用于请求在至少两个频段下进行数据帧的同时发送；
    所述接收模块，被配置为在所述至少两个频段的全部或部分频段中接收所述数据帧。
  23. 根据权利要求22所述的装置，其特征在于，
    所述接收模块，被配置为在所述至少两个频段上接收相同的所述数据帧；
    或，
    所述接收模块，被配置为在所述至少两个频段中接收不同的所述数据帧，不同的所述数据帧是对待发送的数据进行分块后得到的；
    其中，所述数据帧是在所述至少两个频段均处于空闲状态时发送的。
  24. 根据权利要求22所述的装置，其特征在于，
    所述接收模块，被配置为在所述至少两个频段中的第二信道上接收数据帧，所述第二信道是所述至少两个频段中处于空闲状态的信道。
  25. 一种无线通信设备，其特征在于，所述无线通信设备包括：
    处理器；
    与所述处理器相连的收发器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为加载并执行所述可执行指令以实现如权利要求1至9任一所述的数据传输方法。
  26. 一种无线通信设备，其特征在于，所述无线通信设备包括：
    处理器；
    与所述处理器相连的收发器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为加载并执行所述可执行指令以实现如权利要求10至12任一所述的数据传输方法。
  27. 一种计算机可读存储介质，其特征在于，所述可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现如上权利要求1至9任一所述的数据传输方法，和/或，如上权利要求10至12任一所述的数据传输方法。
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